id	name	catchment-area	grid-reference	easting	northing	lat-long	latitude	longitude	river	location	station-level	measuring-authority-id	measuring-authority-station-id	hydrometric-area	opened	closed	station-type	bankfull-flow	structurefull-flow	sensitivity	nrfa-mean-flow	nrfa-peak-flow	feh-pooling	feh-qmed	feh-neither	nhmp	benchmark	live-data	eflag	historic-droughts	marius	outlook-analogues	outlook-esp	factors-affecting-runoff	gdf-start-date	gdf-end-date	gdf-mean-flow	gdf-min-flow	gdf-first-date-of-min	gdf-last-date-of-min	gdf-max-flow	gdf-first-date-of-max	gdf-last-date-of-max	gdf-q95-flow	gdf-q70-flow	gdf-q50-flow	gdf-q10-flow	gdf-q05-flow	gdf-base-flow-index	gdf-day-count	gdf-flow-count	gdf-percent-complete	peak-flow-start-date	peak-flow-end-date	qmed	minimum-altitude	10-percentile-altitude	50-percentile-altitude	90-percentile-altitude	maximum-altitude	saar-1941-1970	saar-1961-1990	lcm2000-woodland	lcm2000-arable-horticultural	lcm2000-grassland	lcm2000-mountain-heath-bog	lcm2000-urban	lcm2007-woodland	lcm2007-arable-horticultural	lcm2007-grassland	lcm2007-mountain-heath-bog	lcm2007-urban	high-perm-bedrock	moderate-perm-bedrock	low-perm-bedrock	mixed-perm-bedrock	high-perm-superficial	low-perm-superficial	mixed-perm-superficial	propwet	bfihost	farl	dpsbar	sprhost	rmed-1d	rmed-2d	rmed-1h	ldp	dplbar	altbar	aspbar	aspvar	ihdtm-height	ihdtm-catchment-area	mean-flood-plain-depth	mean-flood-plain-location	mean-flood-plain-extent	urbext-1990	urbconc-1990	urbloc-1990	urbext-2000	urbconc-2000	urbloc-2000	peak-flow-rejected-amax-years	peak-flow-rejected-periods	data-summary	licence-url	description-summary	description-general	description-station-hydrometry	description-flow-record	description-catchment	description-flow-regime
1001	Wick at Tarroul	161.9	ND2620254915	326202.0	954915.0	58°28'34.3048"N 3°16'01.4180"W	58.4762	-3.26706	Wick	Tarroul	13.0	SEPA-NW	234324	1	1995-11-01		VA	31.2		20.0	true	false	false	false	false	false	false	true	false	false	false	false	false		1995-11-09	2023-09-30	2.964	0.028	2003-08-27	2003-08-27	48.11	2006-10-26	2006-10-26	0.14	0.648	1.609	7.302	10.06	0.39	10188	10188	100.0				12.9	30.6	78.8	135.2	241.4	922	934	0.0981	0.0575	0.4148	0.3931	0.004	0.1088	0.0213	0.4477	0.3878	0.0014		1.0				0.4736	0.4851	0.56	0.3	0.86	29.9	49.62	31.6	44.2	8.0	23.45	12.03	80	52	0.22	13.0	158.18	0.763	0.928	0.0922	0.0004			0.0012					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a catchment in the far north west of Scotland.	Velocity area station in relatively straight (formalised) section.	Cableway present. Rarely by-passed; MAF probably contained.		Relatively dry and flat catchment given over largely to agriculture (arable and pasture). Almost entirely covered with superficial deposits.	Natural flow regime.
2001	Helmsdale at Kilphedir	551.4	NC9983918163	299839.0	918163.0	58°08'27.6037"N 3°42'10.6144"W	58.141	-3.70295	Helmsdale	Kilphedir	17.0	SEPA-NW	234253	2	1974-01-01		VA	103.6		9.1	true	true	true	true	false	true	false	true	true	false	true	false	false	R	1975-01-01	2022-09-30	13.152	0.814	1976-09-06	1976-09-06	187.6	2006-10-26	2006-10-26	3.018	4.675	7.907	29.34	41.96	0.47	17440	17440	100.0	1975-01-01		170.217	20.9	127.5	200.9	324.7	691.6	1102	1117	0.0537	0.0003	0.0712	0.8428	0.0001	0.0577	0.0001	0.3137	0.5959	0.0002		0.0119	0.9881			0.6163	0.3067	0.65	0.324	0.858	97.0	52.88	33.0	43.7	8.3	56.78	30.33	213	201	0.04	20.9	553.24	0.671	1.069	0.0555	0.0			0.0			1974		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in upland Scotland. Flows affected by lochs within the catchment.	Velocity area station; approx. 35m wide river section with flows outflanking cableway on rb at extreme stages.	Stable gravel control. Two peak flow rating across period of record, derived from current meter gaugings up to 2.529m, with a measured flow of 168 cumecs. A new flood rating was applied after the flood of 11/08/2014, following bank erosion. Floods are largely contained, although some out of bank flow may happen on the right bank at extreme flows.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Typical Scottish upland impermeable bedrock headwater catchment almost entirely covered with superficial deposits. Predominantly Moinian metamorphic with granitic and gneiss intrusions. Significant peat cover. Mix of hill pasture and moorland with some 20 sq.km of surface storage distributed over several medium size lochs.	Loch Badanloch and an-Ruathair used for river regulation (through freshets, to benefit fisheries) utilising 30% of catchment, reduced to 24% in Nov 1986 following removal of control structure on Loch an-Ruathair. Data available on storage changes in both lochs.
2002	Brora at Bruachrobie	434.4	NC8915603916	289156.0	903916.0	58°00'38.0048"N 3°52'39.2357"W	58.01056	-3.87757	Brora	Bruachrobie	9.0	SEPA-NW	234174	2	1993-05-01		VA	39.3		11.0	true	true	true	true	false	false	true	true	false	false	true	false	false		1993-05-01	2023-09-30	11.818	0.36	1995-08-18	1995-08-18	229.7	2006-10-26	2006-10-26	0.973	3.055	6.1	29.29	41.19	0.31	11110	11110	100.0	1993-05-01		153.435	9.4	140.4	240.5	417.0	710.8	1190	1217	0.0391	0.0001	0.0746	0.8675	0.0009	0.0564	0.0019	0.2471	0.6809	0.0001		0.0988	0.8889	0.0124		0.5849	0.3381	0.59	0.351	0.845	97.3	54.16	36.4	48.9	8.8	52.37	28.71	259	178	0.15	9.6	423.48	0.705	1.024	0.0553	0.0			0.0002			1992		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in upland Scotland. Mainly natural regime with a small headwater diversion into the Shin catchment.	Velocity area station about 40m wide with relatively stable cobble control at the end of the measuring reach.	Ratings derived from current meter gaugings up to 161 cumecs (about QMED), simple extrapolation beyond. Peak flow rating revised in 2016 and used for whole period of record.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Mountainous headwaters, often snowy in winter. Predominantly Moinian metamorphic rocks with granitic intrusions. Bedrock predominantly impermeable with extensive superficial deposits. Rough pasture and moorland, some forest, with arable land d/s. No significant catchment changes known.	Mainly natural regime. Small headwater diversion into the Shin catchment (HEP). Major storage in Loch Brora (no control).
3001	Shin at Lairg	494.6	NC581062	258100.0	906200.0	58°01'19.9838"N 4°24'14.5766"W	58.02222	-4.40405	Shin	Lairg	81.7	NSHE		3	1950-01-01	1957	VA			5.7	true	false	false	false	false	false	false	false	false	false	false	false	false		1953-10-01	1957-11-30	15.2	0.481	1955-09-01	1955-09-01	116.9	1954-12-27	1954-12-27	2.18	5.975	10.7	33.7	39.93	0.55	1522	1522	100.0				86.5	106.6	219.9	394.8	869.5	1594	1600	0.1656		0.1261	0.6288		0.1917	0.0002	0.2511	0.4739	0.0003			1.0			0.3842	0.4419	0.78	0.367	0.671	99.0	53.58	44.3	65.1	9.2	45.86	22.34	241	171	0.15	86.5	485.96	0.742	0.893	0.0621	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station measuring flows between Loch Shin and diversion dam at Lairg.	River section between main Loch Shin (HEP) dam and diversion dam at Lairg.		1953-56 data pre-dates the start of impoundment (and includes important 1955 recession). 1957 data are compensation flows only.
3002	Carron at Sgodachail	241.1	NH4913692152	249136.0	892152.0	57°53'35.5581"N 4°32'48.0657"W	57.89321	-4.54668	Carron	Sgodachail	70.7	SEPA-NW	234305	3	1973-01-01		VA	161.6		14.0	true	true	true	true	false	false	false	true	false	false	true	false	false	H	1974-01-01	2023-09-30	9.088	0.276	2021-07-26	2021-07-26	203.3	1982-01-29	1982-01-29	0.959	2.674	4.519	21.36	32.79	0.29	18170	18170	100.0	1974-01-01		177.884	75.4	215.4	428.7	681.3	952.4	2024	1784	0.0473		0.0924	0.8293	0.0001	0.0829	0.0005	0.1422	0.7678	0.0002			1.0			0.2963	0.4439	0.81	0.436	0.974	218.2	49.93	43.7	65.4	9.2	31.93	15.94	439	44	0.06	75.4	237.14	0.633	0.863	0.0377	0.0			0.0			1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Low and medium flows affected by diversion to Conon catchment.	Velocity area station; river section about 35m wide, natural control.	Gravel bed with problems of stability in low flow control necessitating revised rating from time to time. Well gauged to bank-full. At extreme levels (above about 3m) water spills out onto road on lb. Rating derived from current meter gaugings, simple extrapolation beyond. Peak flow rating revised in 2003 and a new single rating for high flows only was judged to be suitable for whole period of record. Peak flow rating revised in 2016.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Chart data between 1973 & 1982 was digitised in 2016.	Approx. 80% of this remote Highland catchment is below 600m with a few hilltop tarns but no significant storage. Minimal floodplains. Impermeable mountainous catchment, often snowy in winter. Predominantly Moinian metamorphics. Landuse rough pasture with some forest cover. No significant catchment changes known.	Computed low flows are natural in relation to about 80% of catchment; remainder of headwaters are diverted at low and medium flows to Conon Valley hydro scheme (into Loch Vaich).
3003	Oykel at Easter Turnaig	330.7	NC4030500145	240305.0	900145.0	57°57'42.6614"N 4°42'03.0949"W	57.96185	-4.70086	Oykel	Easter Turnaig	15.6	SEPA-NW	234209	3	1977-01-01		VA	582.8		14.0	true	true	true	true	false	true	true	true	true	true	true	true	true	N	1977-11-01	2022-09-30	16.216	0.321	2008-06-09	2008-06-09	404.9	1982-01-29	1982-01-29	1.034	3.831	7.922	40.64	58.11	0.22	16405	16405	100.0	1978-01-01		347.466	20.3	154.9	273.8	479.4	1005.8	1962	1896	0.0852		0.2628	0.6306		0.1587	0.0001	0.2712	0.5548	0.0			0.9999	0.0001		0.2869	0.5465	0.81	0.359	0.915	148.2	53.57	45.4	65.2	9.4	31.2	16.79	297	61	0.07	20.5	331.67	0.75	0.92	0.0488	0.0			0.0			1977		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in very responsive natural catchment.	Velocity-area station; 40m wide river section.	Natural channel control pre-1986. Construction of stone croys immediately d/s (Feb 1986) affected low flow rating significantly; relatively unstable gravel control remains subject to change after moderate flood events. Rating developed from current meter gaugings, simple extrapolation beyond. Peak flow rating revised in 2016 and one rating for high flows judged to be suitable for whole record.	Nov-Dec 2010 flows considered suspect due to extended period of freezing conditions. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Catchment is typical Highland mix of rough grazing and moorland with some afforestation in middle reaches. Mountainous headwaters, often snowy in winter. Impermeable bedrock overlain by superficial deposits. Minimal floodplains.	Natural flow regime with only small lochs in headwaters. Very responsive.
3004	Cassley at Rosehall	187.5	NC4717602133	247176.0	902133.0	57°58'55.5622"N 4°35'10.1373"W	57.9821	-4.58615	Cassley	Rosehall	3.3	SEPA-NW	234300	3	1979-01-01		VA	51.0		6.0	true	false	false	false	false	false	false	true	false	false	false	false	false	H	1979-11-01	2023-09-30	7.122	0.168	1992-06-13	1992-06-13	193.5	1982-01-29	1982-01-29	0.735	1.764	3.018	17.34	26.71	0.23	16040	16040	100.0				5.2	124.3	289.0	484.1	1059.7	2078	2250	0.0341		0.1654	0.7831		0.0511	0.0002	0.2695	0.6655				1.0			0.3095	0.4736	0.82	0.386	0.902	140.1	52.83	51.1	78.6	9.8	39.41	19.62	300	139	0.11	8.1	187.79	0.954	0.962	0.0557	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with some of the regime influenced by HEP.	Velocity area station. Stable gabion groyne control adequately gauged to bankfull.	Cableway at 35m wide river section located 400m d/s of stage measuring site. Adequately gauged to bankfull.	Nov-Dec 2010 flows considered suspect due to extended period of freezing conditions.	Typical Highland mix of rough grazing and moorland with some afforestation.	Runoff (apart from compensation flows and spillage) from 14% of upper catchment diverted to Shin hydro scheme. No significant surface storage.
3005	Shin at Inveran	575.0	NH5741297418	257412.0	897418.0	57°56'35.4805"N 4°24'37.3802"W	57.94319	-4.41038	Shin	Inveran	4.3	SEPA-NW	234240	3	1981-08-01	2011-07-01	VA	80.7		7.0	true	false	false	false	false	false	false	false	false	false	true	false	false	H	1981-08-01	2011-06-30	4.971	1.097	1994-10-19	1994-10-19	132.0	1989-02-06	1989-02-06	1.686	3.054	3.43	6.407	12.1	0.59	10926	10926	100.0				5.2	105.6	216.4	377.6	869.5	1533	1526	0.1672		0.1455	0.6177		0.1958	0.0004	0.2542	0.4773	0.0005			1.0			0.3798	0.4562	0.76	0.377	0.69	97.6	52.06	42.2	62.1	9.0	56.23	29.31	234	175	0.13	5.2	580.2	0.75	0.941	0.0605	0.0002			0.0002					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station measure compensation flows and spillage from Shin Dam. Station closed during 2011.	30m wide river section with stable gravel control.	Contained at all but historic stages by left bank floodbank. Fully calibrated to bankfull.		Catchment is mainly rough grazing and moorland.	Station measures only compensation flows and spillage from Shin Dam along with natural runoff from 44 sq.km. Turbine discharges bypass station but are recorded. Natural catchment is increased by 20% through inter-basin transfers from R. Cassley, Hope, Naver and Brora - but large net export.
3006	Loch Ailsh at Loch Ailsh	44.34	NC3157710138	231577.0	910138.0	58°02'53.7977"N 4°51'19.1237"W	58.04828	-4.85531	Loch Ailsh	Loch Ailsh	154.3	SEPA-NW	354613	3	2003-04-08	2021-09-30	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		2003-04-08	2021-09-30	2.924	0.079	2012-06-05	2012-06-05	41.5	2010-12-10	2010-12-10	0.28	0.889	1.713	6.857	9.743	0.28	6751	6386	94.593				153.5	193.7	318.9	605.3	1005.8	2182	2558	0.0043		0.1189	0.8407		0.1163	0.0004	0.2564	0.5922	0.0001			1.0			0.1869	0.4923	0.81	0.397	0.796	216.6	49.82	59.3	88.5	10.0	13.53	6.62	362	192	0.22	153.5	44.34	0.731	0.781	0.0505	0.0003			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in the outflow channel of Loch Ailsh. Station downgraded to level only station in Oct 2021.	Velocity area station, flows measured in the Loch outflow channel, 16m wide. Loch levels are also recorded.	Gravel control. Gauging is limited to wading limit, plans to extend using ADCP boat. Maximum gauging just above QMED.		A natural mountainous catchment with little storage. Mainly rough grazing, peat bog and moorland with some forestry.
4001	Conon at Moy Bridge	961.8	NH4812954675	248129.0	854675.0	57°33'23.6803"N 4°32'23.8763"W	57.55658	-4.53997	Conon	Moy Bridge	10.0	SEPA-NW	234284	4	1947-01-01		VA	185.0		6.0	true	false	false	false	false	false	false	true	false	false	true	false	false	H	1947-10-01	2023-09-30	50.155	0.566	1956-09-24	1956-09-24	920.0	1966-12-17	1966-12-17	11.33	25.72	41.34	98.68	117.2	0.57	27759	25718	92.647				11.5	150.4	354.4	635.1	1103.4	1765	1769	0.0987	0.0058	0.113	0.7419	0.0005	0.1187	0.0027	0.1913	0.6475	0.0004		0.0161	0.9839		0.0044	0.1504	0.5097	0.75	0.363	0.742	198.8	52.74	44.4	66.3	9.2	61.26	33.52	377	124	0.04	12.9	962.45	0.885	0.868	0.047	0.0002			0.0001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; regime influenced by transfers from neighbouring catchments and power station.	Velocity area station 80m wide river section.	Cableway present in straight reach (which stands appreciably above the valley bottom). Rare bypassing, via right floodbank, during extreme flows (notch installed in floodbank, following 1989 flood, to avoid catastrophic failure). Gauged to bankfull.	Patchy records prior to 1970. Particularly low flows during commissioning of HEP scheme (e.g. Sept 1956).	Impermeable bedrock with more than half overlain by superficial deposits. Mountainous catchment with some afforestation.	Catchment enhanced by 20% due to transfers from the Orrin, Ewe, Broom and Carron catchments for power generation. Extensive volumes of surface storage controlled for power generation (but no further development after 1960). Hydrograph dominated by influence of Torr Achilty power station.
4003	Alness at Alness	201.0	NH6546769598	265467.0	869598.0	57°41'45.6384"N 4°15'31.5389"W	57.69601	-4.25876	Alness	Alness	11.9	SEPA-NW	234152	4	1973-01-01		VA			9.0	true	true	false	true	false	false	false	true	false	false	true	false	false	SR	1974-01-01	2023-09-30	6.249	0.324	1976-09-05	1976-09-05	123.1	2006-10-26	2006-10-26	0.994	2.233	3.745	14.06	20.0	0.43	18170	18170	100.0	1974-01-01		80.293	13.9	192.5	410.5	579.7	835.0	1471	1366	0.1331	0.0104	0.137	0.6759	0.0018	0.2061	0.019	0.1037	0.6534	0.001		0.1743	0.8257		0.0024	0.424	0.3109	0.63	0.385	0.908	147.7	48.11	40.0	56.4	9.3	43.06	22.55	396	123	0.11	13.9	202.38	0.542	0.997	0.0374	0.0005			0.0005			1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in upland catchment. Flow affected by barrage constructed on Loch Morie.	Velocity area station; 20m wide fully contained river section with stable boulder control.	Difficulties in current meter gauging at low flows. To date all flows contained. Adequately gauged to QMED. Rating derived from current meter gaugings to above QMED, simple extrapolation beyond AMAX1. Peak flow rating was revised in 2003 and a new single rating for high flows only, was judged to be suitable for whole period of record. Rating revised in 2016.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Chart data between 1973 & 1982 was digitised in 2016.	Mountainous headwaters, often snowy in winter. Bedrock predominantly Devonian sandstone with areas of Moinian metamorphics in the upper reaches of the catchment. Landuse mainly rough grazing and moorland with forestry. Minimal floodplains. Construction of barrage on Loch Morie in 1979.	Sluices on Loch Morie, through which 45% of catchment drains, were constructed in 1979 for river regulation (to benefit fisheries). This influences mainly low flows through freshets.
4004	Blackwater at Contin	336.7	NH4551756292	245517.0	856292.0	57°34'12.7293"N 4°35'04.5592"W	57.5702	-4.5846	Blackwater	Contin	19.9	SEPA-NW	234186	4	1981-01-01	2011-07-01	VA	59.2		11.3	true	false	false	false	false	false	false	false	false	false	false	false	false	H	1981-01-02	2011-07-01	6.025	0.747	1989-12-13	1989-12-13	174.5	1989-02-06	1989-02-06	1.443	2.109	3.228	13.15	19.99	0.4	11138	11137	99.991				28.9	188.7	384.4	692.8	1082.9	1665	1600	0.1325	0.0026	0.0994	0.7276	0.0002	0.1747	0.0004	0.1544	0.637	0.0002			1.0			0.1463	0.5589	0.74	0.356	0.783	196.4	54.29	44.0	65.1	9.2	47.91	28.49	413	171	0.09	28.9	322.83	0.685	0.838	0.0413	0.0001			0.0001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; regime influenced by transfers from neighbouring catchments. Station closed in 2011.	Velocity area station, 50m wide.	Cableway present. MAF readily contained. Requires regular recalibration at low flows.		Typical Highland mix of rough grazing and moorland with some afforestation in middle reaches. Impermeable bedrock with two thirds covered by superficial deposits.	Runoff from 50% of natural catchment, along with interbasin transfers from rivers Broom and Carron amounting to 20% of natural catchment, bypass station for power generation and discharge to Loch Luichart. Storages in Loch Vaich and Loch Glascarnoch controlled for power generation.
4005	Meig at Glenmeanie	120.5	NH2864952780	228649.0	852780.0	57°31'57.4117"N 4°51'49.5826"W	57.53261	-4.86377	Meig	Glenmeanie	120.7	SEPA-NW	234227	4	1985-01-01		VA	103.3		13.0	true	true	true	true	false	false	true	true	false	false	false	false	false	N	1986-01-01	2023-09-30	6.893	0.157	1995-08-11	1995-08-11	131.8	1992-01-02	1992-01-02	0.57	1.714	3.381	17.34	25.13	0.25	13787	13787	100.0	1986-01-01		101.504	118.7	225.5	462.7	710.2	1052.7	2074	2145	0.0569		0.0991	0.8299		0.0623	0.0001	0.1729	0.7553	0.0001			1.0			0.1247	0.3379	0.76	0.389	0.918	289.0	52.86	47.4	73.3	9.7	28.09	12.97	463	123	0.03	118.9	123.67	0.643	0.901	0.0366	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a typical Scottish upland catchment. Significant storage in Loch Beannacharain.	Velocity area station; 25m wide river section.	Unstable gravel and boulder control. Levels may drop below tapping pipe in extreme droughts. Extreme floods above about 2m cause right hand bank to erode and to deposit on control - eventually being washed away. Bypassing can occur on left bank behind the station hut at floods above about 2.2m (known only once during record in Feb 1989). Adequately gauged to bankfull. Two peak flow ratings accross period of record derived from current meter gaugings up to 94 cumecs with simple extrapolation beyond. Transition used in early 1989 when two huge floods caused major channel change warranting a new flood rating, QHigh1989, but the exact start date and time is impossible to pinpoint.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Typical Scottish upland catchment. Mountainous headwaters, often snowy in winter, with rough pasture and moorland, and some woodlands. Impermeable bedrock, predominantly metamorphic with intrusions of gneiss and mica schist, overlain by superficial deposits. No significant catchment changes known.	Natural regime. No artificial influences thereby providing a useful indication of natural runoff. Significant surface storage in Loch Beannacharain through which 70% of catchment drains.
4006	Bran at Dosmucheran	116.1	NH2046360186	220463.0	860186.0	57°35'45.1434"N 5°00'20.7726"W	57.59587	-5.00577	Bran	Dosmucheran	118.6	SEPA-NW	234202	4	1990-01-01		VA	80.5		13.0	true	true	true	true	false	false	false	true	false	false	false	false	false	N	1989-11-01	2023-09-30	6.923	0.118	2023-06-09	2023-06-10	96.1	2015-03-07	2015-03-07	0.533	1.798	3.631	17.35	23.79	0.28	12387	12385	99.984	1989-11-01		84.153	119.4	171.6	330.0	563.0	913.5	2016	2203	0.0228		0.1431	0.8027		0.0277	0.0013	0.1789	0.7617				1.0			0.1305	0.684	0.83	0.333	0.814	164.6	52.93	51.0	75.5	9.6	23.51	13.08	351	56	0.05	119.5	117.53	0.717	0.861	0.0479	0.0			0.0			2009		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in wet Highland catchment. Substantial storage in Loch a'Croisg.	Bare upland peat catchment. Recent tree planting in some area. A few recent small run of river hydro schemes.	Gravel control. Cableway capacity considerably exceeds bankfull. All flows to date contained. Peak flow ratings derived from current meter gaugings up to 92 cumecs (about 1.1 QMED), simple extrapolation beyond. Single rating for peak flows across whole period of record (since review in 2003). Stable bed and riverbanks with very little evidance of errosion, scour, deposition or material change. Highflows are relatively low energy and ensure a stable physical dimensions for the hydraulic section.	Accurate record with no gaps. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Very wet, rugged, Highland catchment. Mountainous headwaters, often snowy in winter. Predominantly Moinian metamorphic with mica schist and gneiss intrusions. Approximately a third covered with superficial deposits. Largely moorland and rough grazing. Minimal tree cover. Achnasheen is the only significant settlement. No significant catchment changes known.	No impoundment and low antecendent conditions mean rapid changes from high flow spate conditions to minimal baseflow conditions over short periods of time.
4007	Blackwater at Garve	289.0	NH3953861706	239538.0	861706.0	57°37'00.1051"N 4°41'16.9039"W	57.6167	-4.68803	Blackwater	Garve	71.0	SEPA-NW	234225	4	1989-10-01	2021-09-30	VA	66.0		9.0	true	false	false	false	false	false	false	false	false	false	false	false	false		1989-10-18	2021-09-30	4.784	0.209	1989-12-14	1989-12-14	104.5	2014-12-21	2014-12-21	1.124	1.616	2.256	10.69	16.83	0.35	11671	11558	99.032				70.3	250.1	405.2	713.3	1082.9	1753	1672	0.0894	0.0025	0.0778	0.7929		0.1398	0.0	0.1574	0.6715	0.0001			1.0			0.1476	0.5548	0.75	0.349	0.843	201.2	55.21	45.4	67.7	9.3	36.73	20.49	440	166	0.07	70.3	278.55	0.607	0.819	0.0381	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; regime influenced by HEP storage and transfers from neighbouring catchments. Station downgraded to level only and closed on the NRFA from Sept 2021.	Velocity area station; 30m wide with gravel control. Flood Warning Site.	All flows contained. Stage-discharge relations are limited range: no cableway, gauged by wading only.	Affects of compensation flow seen in record at low flows, e.g. May 2017; August 2016. Station downgraded to level only in October 2021.	Rugged, Highland catchment underlain by impermeable Pre-Cambrian rock. Predominantly moorland and rough grazing with substantial forestry below 400m.	Substantial storage upstream for HEP. Gauged flows include compensation flow, runoff from unimpounded catchment and reservoir spills. Considerable u/s inter-catchment transfers via tunnels.
4008	Newhall Burn at Newhall Bridge	41.0	NH7022565187	270225.0	865187.0	57°39'28.1425"N 4°10'35.8553"W	57.65782	-4.17663	Newhall Burn	Newhall Bridge	8.0	SEPA-NW	234290	4	1996-08-01		VA	9.1		78.0	true	false	false	false	false	false	false	true	false	false	false	false	false		1996-08-27	2023-09-30	0.466	0.009	2022-08-11	2022-09-02	15.77	2015-01-15	2015-01-15	0.033	0.12	0.251	1.032	1.576	0.45	9896	9896	100.0				7.0	48.1	130.0	193.1	255.2	799	777	0.4062	0.2306	0.2286	0.124	0.0025	0.5154	0.1754	0.3003	0.0073	0.0016		1.0			0.0083		0.9368	0.42	0.684	0.996	52.4	27.77	31.3	41.7	8.4	15.35	7.29	127	352	0.52	7.3	36.43	0.408	1.008	0.0538	0.0002			0.0002					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in lowland catchment in north west Scotland.	Velocity area station. Concrete covered water pipe crossing river acts as control.	All flows contained. Not a primary gauging station - stage continuously monitored but stage discharge relations are limited range: no cableway, gauged by wading.		Lowland catchment underlain by Lower and Middle Old Red Sandstone. Predominantly arable and pasture with some forestry and rough pasture in upper catchment.
4009	Peffery at Strathpeffer STW	17.3	NH4929258688	249292.0	858688.0	57°35'34.7227"N 4°31'22.9493"W	57.59298	-4.52304	Peffery	Strathpeffer STW	36.0	SEPA-NW	234316	4	1992-10-01		VA		12.0	60.0	true	false	false	false	false	false	false	true	false	false	false	false	false		1995-11-20	2023-09-30	0.264	0.003	2002-07-16	2002-07-16	5.736	2013-12-28	2013-12-28	0.019	0.073	0.145	0.631	0.919	0.4	10177	9705	95.362				30.3	83.3	209.6	414.1	753.2	1069	1059	0.5911	0.0581	0.2434	0.0852	0.0137	0.5347	0.0497	0.2718	0.1145	0.0222		0.3241	0.6759		0.0838	0.1686	0.6326	0.74	0.488	0.973	152.4	41.44	36.9	51.4	8.4	9.35	3.71	231	167	0.31	30.5	15.94	0.377	0.548	0.0381	0.0108	0.522	0.422	0.0085	0.634	0.468			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir with secondary weir downstream in a largely natural catchment.	Flat V Crump weir. A secondary weir was constructed approx 15 m downstream of the main weir in June 2013, in order to maintain levels on main weir apron and allow easier fish passage. Previously a limited range secondary velocity area station (for pollution investigation); 2m wide controlled by Armco culvert, gauged by wading.	Cableway present for high flow calibration. Floodbanks contain >MAF. Significant shrub/tree colonisation of channel banks.		Upper catchment forested, underlain by impermeable Prec-Cambrain rocks. Lower catchment mainly arable and pasture underlain by Lower and Middle Old Red Sandstone with Quaternary coastal and river alluvium in valley floor. Strathpeffer (Spa) is a short distance u/s.	Natural catchment apart from diversion of sewage effluent (outside the catchment) when flows fall below a trigger threshold; runoff is appreciably reduced.
4010	Meig at Loch Beannacharain	70.92	NH2288151822	222881.0	851822.0	57°31'18.4796"N 4°57'33.3938"W	57.5218	-4.95928	Meig	Loch Beannacharain	145.0	SEPA-NW	473090	4	2011-04-01	2020-09-30	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		2011-03-28	2020-09-30	5.01	0.054	2018-07-08	2018-07-08	95.25	2015-03-07	2015-03-07	0.378	1.318	2.424	12.64	19.0	0.24	3475	3475	100.0				144.5	260.8	495.9	755.9	1052.7	2295	2382	0.0223		0.1157	0.852		0.0284		0.1812	0.7898				1.0			0.1196	0.4766	0.8	0.38	0.994	285.3	53.78	52.5	81.4	10.1	20.21	9.91	497	109	0.04	144.5	70.92	0.67	0.857	0.0383	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Loch Beacneacharain outflow measurement; a natural mountainous catchment. Downgraded to a level only station in 2020.	Flows measured in 20-40m section in Loch outflow. Levels recorded at the head of the Loch. Silt and gravel control.	Levels recorded at the head of the loch, but flow is gauged at the outlet. Loch level is susceptible to strong west-east winds. No cableway. Maximum gauging below QMED.		Natural mountainous catchment with a small amount of plantation , rough grazing, moorland and peat bog. Significant storage in Loch Beanacharain.
4011	Meig at Corrievuic	58.36	NH20295101	220290.0	851010.0	57°30'48.5822"N 5°00'06.7522"W	57.5135	-5.00188	Meig	Corrievuic	158.0	SEPA-NW	472872	4	2011-03-15	2020-02-28	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		2011-03-15	2020-02-28	4.348	0.115	2012-06-15	2012-06-15	42.95	2015-03-07	2015-03-07	0.335	1.072	1.985	12.07	16.94	0.21	3273	3273	100.0				153.9	280.8	539.0	773.0	1052.7	2388	2469	0.0008		0.0948	0.8928		0.0054		0.1365	0.8581				1.0			0.1053	0.4942	0.82	0.385	0.993	301.4	54.84	54.7	84.7	10.4	16.88	7.9	525	21	0.09	154.2	58.37	0.626	0.87	0.0364	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural mountainous catchment. Station closed in February 2020.	Velocity area station in a 20m wide section with gravel control.	No cableway. All flows contained. Can be gauged by ADCP from bridge. Gauged to well above QMED, approaching AMAX3.	Remote site with no telemetry, stage is unknown before onsite so difficult to target gaugings.	Natural mountainous catchment with a small amount of plantation , rough grazing, moorland and peat bog.
5001	Beauly at Erchless	849.5	NH426405	242600.0	840500.0	57°25'38.9763"N 4°37'23.2418"W	57.42749	-4.62312	Beauly	Erchless	43.9	NSHE		5	1950-01-01	1963-01-01	VA	240.0		3.3	true	false	false	false	false	false	false	false	false	false	false	false	false	H	1953-10-01	1962-09-30	45.633	7.362	1955-08-31	1955-08-31	376.6	1962-02-12	1962-02-12	14.16	26.62	34.83	85.8	116.7	0.5	3287	3287	100.0				29.6	220.6	449.9	777.3	1182.5	2166	2153	0.0843		0.1136	0.7567	0.0004	0.1068	0.0012	0.2114	0.6433	0.0001			1.0			0.0546	0.421	0.74	0.4	0.782	263.5	51.92	49.6	73.8	10.3	61.43	33.36	470	99	0.1	29.7	857.5	0.796	0.813	0.0375	0.0001			0.0002					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; regime influenced by storage in Loch Monar and Beannacharain.	Velocity area station in 40m wide section.	Fully contained river section currently gauged to 65 cumecs (control drowns).			100% of natural catchment runoff passes station but extensive storage in Loch Monar and the smaller Loch Beannacharain used for power generation. Flow regime reflects generating pattern of Culligran Power Station immediately u/s.
5002	Farrar at Struy	311.3	NH3903440439	239034.0	840439.0	57°25'32.5078"N 4°40'56.6415"W	57.4257	-4.6824	Farrar	Struy	51.2	SEPA-NW	234321	5	1986-10-01	2011-07-01	VA	152.1		6.0	true	false	false	false	false	false	false	false	false	false	true	false	false	H	1986-10-01	2011-06-30	19.374	4.013	2002-08-21	2002-08-21	148.3	1990-03-05	1990-03-05	6.266	8.211	13.46	41.13	48.72	0.59	9039	9039	100.0				54.2	225.5	459.6	751.8	1151.9	2125	2191	0.0135		0.0862	0.8411	0.0	0.0382		0.1719	0.7476	0.0			1.0			0.0552	0.4578	0.74	0.388	0.769	265.8	53.05	46.9	69.6	9.9	46.34	25.35	470	113	0.1	54.3	307.68	0.548	0.881	0.0293	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station closed in 2011; regime heavily influenced by HEP and Loch storage.	Velocity area station.	Flows well contained at all stages.		Typical Scottish upland impermeable catchment with some afforestation in lower reaches.	Low flows reflect compensation releases from Loch Beannacharain and flow regime is heavily influenced by operation of HEP station <1.5km u/s. Substantial HEP storage in Loch Monar but no import/export of water to/from the catchment.
5003	Glass at Kerrow Wood	481.8	NH3544932076	235449.0	832076.0	57°20'57.7546"N 4°44'11.1406"W	57.34938	-4.73643	Glass	Kerrow Wood	52.9	SEPA-NW	234251	5	1989-01-01	2021-10-01	VA	124.8		4.0	true	false	false	false	false	false	false	false	false	false	true	false	false	H	1988-10-01	2021-09-30	31.525	3.936	2009-06-09	2009-06-09	290.5	1989-02-06	1989-02-06	8.614	15.86	25.07	59.88	74.04	0.59	12053	12053	100.0				52.8	242.4	478.7	811.2	1182.5	2312	2249	0.103		0.1299	0.7256	0.0006	0.1277	0.0005	0.2467	0.5875	0.0001			1.0			0.0473	0.4222	0.75	0.4	0.772	273.6	52.45	53.1	79.4	10.7	46.53	23.76	498	82	0.1	52.9	487.7	0.699	0.796	0.0351	0.0001			0.0003					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; complex flow regime of HEP, Loch storage and transfers. Station downgraded to level only in Oct 2021.	Velocity area station 50m wide with gravel control.	Flows >200 cumecs inundate extensive floodplain on lb.	Station downgraded to level only in Oct 2021.	Rugged, Highland catchment developed mostly on Moinian Series metamorphics (impermeable). Around half of the catchment is covered with superficial deposits. Landuse predominantly moorland and rough grazing but substantial afforestation below 400m.	Very complex flow regime; substantial loch storage exploited for HEP generation (station d/s of Fasnaklye Power Station), compensation flows from Loch Mullardoch and transfers via two tunnels, but no net import or export of water.
5004	Glass at Fasnakyle	277.5	NH3152628751	231526.0	828751.0	57°19'05.1991"N 4°47'57.3628"W	57.31811	-4.79927	Glass	Fasnakyle	80.0	SEPA-NW	234215	5	1991-01-01	2021-10-01	VA	102.2		51.0	true	false	false	false	false	false	false	false	false	false	false	false	false	H	1990-12-01	2021-09-30	4.894	0.266	1997-11-04	1997-11-04	195.6	2015-03-07	2015-03-07	1.19	1.738	2.505	10.3	15.75	0.42	11262	11262	100.0				77.3	245.8	451.7	795.6	1182.5	2388	2209	0.1286		0.1101	0.7272		0.172	0.0004	0.2833	0.5158	0.0002			1.0			0.0748	0.4343	0.74	0.39	0.808	258.2	52.33	54.5	81.4	10.8	40.24	18.83	485	70	0.1	77.7	280.44	0.645	0.911	0.0364	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; regime dominated by HEP and Loch storage. Station downgraded to level only station in Oct 2021.	Velocity area station 30m wide with gravel control.	All flows contained.	Large compensation flows present in record at low flows; January-April 2013; May-July 2017. Station downgraded to level only station in Oct 2021.	Typical Highland catchment with afforestation on valley flanks in lower reaches.	HEP generation affects flow pattern: net import of water (from Loch Mullardoch) but substantial bypassing direct to power station, station monitors only a proportion of the runoff. Low flows dominated by compensation releases from Loch Benevean.
6001	Ness at Ness Castle Farm	1792.3	NH639410	263900.0	841000.0	57°26'19.9074"N 4°16'08.3800"W	57.43886	-4.26899	Ness	Ness Castle Farm	9.1	NSHE		6	1935-01-01	1963-12-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	H	1935-10-01	1963-09-30	73.767	7.334	1955-09-02	1955-09-02	560.7	1936-12-20	1936-12-20	12.46	33.41	54.2	154.9	213.5	0.54	10227	9131	89.283				10.0	127.9	353.0	684.2	1109.6	1823	1779	0.1673	0.0102	0.1324	0.6211	0.0006	0.179	0.0055	0.3342	0.4136	0.001		0.0847	0.9153		0.0137	0.0986	0.349	0.72	0.414	0.676	180.4	49.6	48.0	68.5	10.7	104.81	54.38	378	14	0.07	10.4	1803.86	0.691	0.959	0.0401	0.0003			0.0002					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station replaced by 6007 in 1963.	Velocity area station 3 km south-west of Inverness. Station superseded in 1963 by d/s 6007 (area difference ~ 27 km2).		Monthly flows 1929-1944 from runoff calculated by McClean. Records ending in 1963 because of lack of reliability (but captured 1955 drought).	Predominately impermeable bedrock. Land use: heath, woodlands, grasslands.	Reservoirs Quoich, Garry, Cluanie and Loyne in the catchment (1960s); abstractions for the Caledonian Canal also significant (c3.5 cumecs).
6003	Moriston at Invermoriston	391.0	NH416169	241600.0	816900.0	57°12'55.3557"N 4°37'28.5908"W	57.21538	-4.62461	Moriston	Invermoriston	35.1	NSHE		6	1929-01-01	1945	VA			9.6	true	true	false	true	false	false	false	false	false	false	false	false	false		1929-08-05	1945-09-30	20.727	0.396	1945-09-11	1945-09-11	283.2	1935-02-18	1940-12-16	1.84	5.749	10.71	51.0	74.28	0.29	5901	5901	100.0	1930-03-19	1944-10-30	312.916	40.7	207.5	397.8	655.0	1109.6	2146	2115	0.1087	0.0007	0.0895	0.7522		0.1424	0.0002	0.4423	0.3633	0.0			1.0		0.0047	0.0935	0.3812	0.74	0.362	0.813	209.7	52.51	55.4	81.5	11.2	49.27	27.8	408	127	0.12	41.1	398.45	0.786	0.892	0.0398	0.0001			0.0			1929		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station closed in 1945.	Velocity area station. Station closed in 1945.	The control is a broad, flat, gravel and boulder bar with a tree covered island and a steep gradient d/s. All flows contained on the left bank - the right bank is lower with a floodplain at about 3m. Peak flow rating derived from current meter gaugings (but no gaugings available).	Because of increasing breakdowns of the recorder, records became unreliable from 1944 onwards.	Mountainous headwaters, often snowy in winter. Pre-Cambrian grits and schists. Mainly rough pasture and moorland, some forest cover. No significant catchment changes known. Pre-reservoir FARL is 0.985 and should be used with these records because the station closed before the reservoirs in the catchment began impounding. Post-reservoir FARL is 0.813.	Natural regime (reservoirs in the hydroelectric scheme began impounding in 1957, after the station was closed). Loch Loyne and Loch Cluaine were natural pre-1957.
6006	Allt Bhlaraidh at Invermoriston	27.5	NH377168	237700.0	816800.0	57°12'47.2100"N 4°41'20.5582"W	57.21311	-4.68904	Allt Bhlaraidh	Invermoriston	107.0	NSHE		6	1951-01-01	1962	CB		5.6	33.0	true	false	false	false	false	false	false	false	false	false	false	false	false		1953-10-01	1962-09-30	0.88	0.003	1955-07-17	1955-08-13	16.68	1961-12-12	1961-12-12	0.057	0.244	0.453	2.172	3.256	0.29	3287	3287	100.0				109.1	345.0	493.2	561.2	675.9	1577	1550	0.046		0.0075	0.8822		0.073		0.2712	0.5859				1.0			0.1541		0.7	0.277	0.75	108.9	56.07	38.0	53.9	9.9	11.74	6.27	472	152	0.32	114.2	26.16	0.37	1.113	0.0327	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station with compound weir, closed in 1962.	Compound weir. Station ceased 1962.
6007	Ness at Ness-side	1839.1	NH6450742726	264507.0	842726.0	57°27'16.3317"N 4°15'35.4487"W	57.45454	-4.25985	Ness	Ness-side	6.9	SEPA-NW	234287	6	1973-01-01		VA	795.0		4.0	true	false	false	false	false	true	false	true	true	true	true	false	true	H	1972-09-06	2022-09-30	90.743	7.863	1977-07-03	1977-07-03	768.8	1989-02-07	1989-02-07	21.08	46.12	68.34	182.4	240.0	0.61	18287	18287	100.0				7.0	124.8	348.8	682.5	1109.6	1809	1765	0.1697	0.0122	0.1333	0.6158	0.0006	0.1809	0.0073	0.3329	0.4111	0.0012		0.0982	0.9018		0.0156	0.0976	0.3551	0.71	0.418	0.679	178.6	49.23	47.8	68.2	10.7	106.94	55.82	375	12	0.07	9.6	1830.73	0.7	0.945	0.0409	0.0003			0.0003					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; flow regime affected by Loch Ness and other storage within the catchment.	Velocity area station 80m wide.	Fully calibrated to maximum recorded flow. Frequent recalibration of low flow rating due to alteration of stop-log configuration on weir which forms control.	1975, 1976, 1977 notably dry summers.	Large SW/NE trending Highland catchment. Predominantly impermeable bedrock, less than half with superficial deposits. Mountainous with significant afforestation and grasslands.	Hydrograph damped by influence of Loch Ness. Caledonian Canal lockages bypass station but, overall, small net impact. HEP schemes on Garry, Moriston and Foyers tributaries utilise runoff from 56% of catchment, can cause abrupt changes in flow e.g. July 2000.
6008	Enrick at Mill of Tore	105.9	NH4504429976	245044.0	829976.0	57°20'02.0250"N 4°34'32.9924"W	57.3339	-4.57583	Enrick	Mill of Tore	109.4	SEPA-NW	234277	6	1979-01-01		VA	22.9		25.0	true	true	false	true	false	false	false	true	false	true	false	false	true	N	1979-12-01	2023-09-30	3.198	0.001	1995-08-23	1995-08-24	76.7	1997-03-01	1997-03-01	0.103	0.699	1.481	8.202	12.38	0.31	16010	16010	100.0	1980-01-01		41.433	111.1	187.4	335.6	519.5	674.8	1339	1290	0.2072	0.0046	0.1304	0.6385		0.2496	0.001	0.1273	0.5995	0.0004			1.0			0.0134	0.1883	0.7	0.433	0.839	118.3	43.43	35.5	51.1	9.2	25.24	11.37	346	353	0.13	111.1	107.02	0.609	0.92	0.0467	0.0002			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in upland catchment. Catchment drains through Loch Meiklie.	Velocity area station; 15m wide river section.	Natural boulder control. Flows recede to unexpectedly low levels, possibly due to sub-surface flows below station. Prior to 1991 when flood embankments were built, bypassing occurred on right bank at extreme flows above about 2.3m. Rating derived from current meter gaugings, simple extrapolation beyond. Peak flow rating was revised in 2003 a new single rating for peak flows only was judged to be suitable for whole period of record. Rating revised in 2016.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Mountainous headwaters, often snowy in winter. Typical upland catchment. Impermeable Moinian metamorphics overlain with superficial deposits. Rough grazing and moorland with approx a quarter forested, especially around Loch Meiklie. No significant catchment changes known.	Flows 100% natural but whole catchment drains through Loch Meiklie (1 sq.km).
6009	Moriston at Levishie	403.1	NH4021817473	240218.0	817473.0	57°13'12.1377"N 4°38'52.2028"W	57.22004	-4.64783	Moriston	Levishie	41.7	SEPA-NW	234262	6	1994-03-01	2011-06-01	VA			18.0	true	false	false	false	false	false	false	false	false	false	false	false	false	H	1994-03-01	2011-05-31	5.657	0.274	2004-01-29	2004-01-29	216.2	1997-03-01	1997-03-01	0.708	1.895	2.367	9.919	24.01	0.42	6301	6301	100.0				46.1	211.3	399.8	657.7	1109.6	2162	2131	0.1052	0.0004	0.0887	0.7561		0.1399	0.0002	0.4441	0.3631	0.0			1.0		0.0048	0.0951	0.3861	0.74	0.361	0.811	209.4	52.62	55.7	82.0	11.3	47.48	26.44	410	126	0.12	46.1	391.61	0.766	0.898	0.0392	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a rural Highland catchment. Closed in 2011.	Velocity area station; 40m wide with gravel and boulder control. Flood warning station. Station closed during 2011.	All flows contained.		Rugged, Highland catchment, underlain by impermeable Pre-Cambrian rock, with small intrusive area around Loch Cluanie. Predominantly moorland and rough grazing with substantial forestry below 400m.	Gauged flows include: comp. flows, runoff from unimpounded catchment and res. spill. Substantial u/s storage for HEP. Downstream of Dundreggan Reservoir, by-passed by tunnel to power station.
6011	Tarff at Ardachy Bridge	75.9	NH3798907473	237989.0	807473.0	57°07'46.2857"N 4°40'41.5237"W	57.12952	-4.6782	Tarff	Ardachy Bridge	33.1	SEPA-NW	234155	6	1993-01-01		VA				true	false	false	false	false	false	false	true	false	false	false	false	false		1993-01-01	2023-09-30	3.476	0.007	2003-01-06	2003-01-06	75.65	2005-01-06	2005-01-06	0.236	0.762	1.526	8.667	13.27	0.22	11230	11230	100.0				33.6	322.5	611.2	763.3	894.9	1728	1616	0.0343	0.0036	0.199	0.7354		0.0153		0.3246	0.6578			0.0551	0.9449			0.2967	0.302	0.72	0.397	0.965	184.6	54.33	50.2	70.5	11.5	21.98	11.19	562	340	0.23	33.6	75.64	0.352	1.25	0.0291	0.0			0.0					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a rural Highland catchment. Some abstractions in the upper catchment.	Velocity area station 25m wide; bedrock and boulder control.	All flows contained. No cableway but high flows gauged from bridge an ADCP boat.	Naturalised data available from SEPA.	Rugged highland catchment underlain by impermeable rock. Predominately moorland and rough grazing with some forestry.	Abstractions in upper reaches for the Glen Doe hydro scheme from October 2008. Prior to this all flows are natural.
6012	Enrick at White Bridge	56.2	NH3919030158	239190.0	830158.0	57°20'00.6065"N 4°40'23.0891"W	57.3335	-4.67308	Enrick	White Bridge	144.1	SEPA-NW	355980	6	2007-08-21		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		2007-08-22	2023-09-30	1.715	0.002	2013-07-21	2013-07-22	34.79	2015-03-07	2015-03-07	0.078	0.349	0.738	4.472	6.849	0.25	5884	5884	100.0	2007-08-01		32.997	142.2	213.2	338.3	519.5	674.8	1412	1331	0.1953		0.0884	0.7038		0.2141	0.0008	0.1377	0.6314	0.0002			1.0			0.0015	0.0892	0.7	0.392	0.915	106.9	46.36	35.3	51.1	9.2	18.24	8.19	352	344	0.22	142.3	56.2	0.643	0.84	0.0508	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural mountainous catchment.	Open channel section with gravel control. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	No cableway. High flow gaugings carried out by ADCP boat. Good confidence in high flows. Gauged to around QMED. Two peak flow ratings across period of record.	Low flows in July 2013 verified by multiple low flow gaugings during the month, therefore thought to be reliable.	A natural mountainous catchment with a number of small lochs. Mainly pasture, rough grazing, moorland and peat bog with some forestry.	Micro-hydropower scheme in operation from mid-2017 onwards.
6013	Mill Burn at Dirriebught House	9.22	NH6775345238	267753.0	845238.0	57°28'40.9502"N 4°12'25.7511"W	57.47804	-4.20715	Mill Burn	Dirriebught House	11.2	SEPA-NW	234200	6	1998-09-11		VA	8.62			true	false	false	false	false	false	false	true	false	false	false	false	false		1998-09-12	2023-09-30	0.179	0.014	2003-09-04	2003-10-01	3.425	1998-11-14	1998-11-14	0.045	0.101	0.144	0.326	0.426	0.73	9150	9134	99.825				11.2	32.2	149.9	237.7	291.7	790	781	0.2336	0.0797	0.3457	0.1319	0.1845	0.1974	0.0774	0.3092	0.1466	0.2694		1.0			0.3679		0.6321	0.43	0.714	0.992	47.1	27.76	31.8	41.4	8.8	8.81	4.36	138	333	0.7	11.2	9.22	0.605	0.849	0.0842	0.0653	0.801	0.369	0.092	0.865	0.403			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a small urban catchment in Inverness.	Open channel section 2-3m wide with weir control.	No cableway. Gauged to around QMED, but deviations are common due a degrading weir and channel movements.	Mid to high confidence in low and medium flows. Highest flows recorded using ADCPs from bridge downstream and should be treated with caution.	Small urban catchment in Inverness.
7001	Findhorn at Shenachie	415.6	NH8255833548	282558.0	833548.0	57°22'37.8274"N 3°57'17.3462"W	57.37717	-3.95482	Findhorn	Shenachie	252.4	SEPA-NW	234306	7	1960-01-01		VA	265.6		15.3	true	true	true	true	false	false	true	true	true	true	true	false	true	N	1960-10-01	2023-09-30	13.942	0.938	2003-08-17	2003-08-17	270.8	1966-12-17	1966-12-17	2.024	4.81	7.909	31.67	47.32	0.35	23010	23010	100.0	1960-01-01		272.93	251.3	340.0	559.7	761.0	935.3	1429	1217	0.0755		0.1658	0.7432		0.0766	0.0014	0.1413	0.7758	0.0012			1.0		0.0157	0.4454	0.3896	0.68	0.451	0.982	138.9	55.84	39.4	56.9	10.3	50.96	25.6	560	24	0.11	251.4	415.59	0.625	0.763	0.0392	0.0002			0.0002					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a responsive catchment with minimal storage. Catchment nested within 7002.	Velocity area station; ; 50m wide river section. Prior to January 1978, station located 700m u/s and cableway 500m d/s of present site; spot gauging info for this site not available - hence less confidence in this period. Catchment nested within that of 7002.	Boulder control. Ice formation is a common problem causing uncertainty in measuring flows. Liable to extremely rapid rises in level but adequately gauged to bankfull. Peak flow record revised in 2016, one rating adopted for the whole record derived from current meter gaugings, simple extrapolation beyond. No gaugings available pre-1978. Pre-1978 rating previously held has been corrected causing an increase of 12% in QMED.	Erroneously elevated flows e.g. Dec 1978 - Jan 1979, Dec 1981 - Jan 1982, Jan 2001, Dec 2009 - Jan 2010 and Dec 2010 due to ice formation. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Chart data between 1961 & 1982 was digitised in 2016.	Mountainous headwaters, often snowy in winter. Predominantly metamorphic with granitic intrusions. Extensive blanket peat over long, narrow, steep-sided catchment. Rough pasture and moorland, minimal tree cover. No significant catchment changes known.	Very responsive catchment with a natural regime. Minimal surface storage (but significant winter snow cover).
7002	Findhorn at Forres	781.9	NJ0185358387	301853.0	858387.0	57°36'17.1772"N 3°38'38.7059"W	57.60477	-3.64408	Findhorn	Forres	9.6	SEPA-NW	234221	7	1958-01-01		VA	151.4		16.0	true	true	true	true	false	false	false	true	false	true	true	false	true	N	1958-10-01	2023-09-30	19.641	1.752	1976-08-23	1976-08-23	612.0	1970-08-17	1970-08-17	3.35	7.193	11.59	43.58	62.44	0.39	23741	23741	100.0	1958-06-19		348.369	10.7	230.5	408.5	725.5	935.3	1206	1065	0.1258	0.0044	0.1495	0.707	0.0001	0.1285	0.0064	0.1504	0.7058	0.0014	0.0147		0.9853		0.0799	0.348	0.4593	0.56	0.434	0.973	117.2	51.62	39.1	54.2	10.0	100.09	54.64	442	11	0.16	10.7	781.77	0.704	0.842	0.0483	0.0001			0.0001					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station draining Monadhliath mountains to the North Sea coast. Construction of a flood alleviation scheme and major events (August 2014) has changed the bed and bank profiles significantly, station will require complete re-calibration.	Velocity area station; 50m wide river section.	Station located in mobile gravel reach which necessitates frequent recalibration of low flow rating. Occasional ice build-up in winter months. Flows contained under cableway up to 3.8m. Adequately gauged to bankfull. Bypassing of station only known in 1970s by floods above about 4m; since then flood banks have been raised. High flow gauging on the Findhorn is difficult and substantial extrapolation of the rating was needed to compute the exceptional August 1970 peak, but this was substantially exceeded during the "Muckle spate" of 1829. Four peak flow ratings across period of record, derived from current meter gaugings.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Chart data between 1959 & 1982 was digitised in 2016.	Mountainous headwaters, often snowy in winter. Catchment drains the Monadhliath Mountains; predominantly metamorphic bedrock with granitic intrusions with extensive blanket peat cover. Little tree cover. Pasture and arable on coastal floodplains. No significant catchment changes.	Very responsive natural regime. Minimal surface storage.
7003	Lossie at Sheriffmills	216.0	NJ1940262632	319402.0	862632.0	57°38'46.9296"N 3°21'06.9595"W	57.64637	-3.35193	Lossie	Sheriffmills	17.7	SEPA-NW	234307	7	1963-01-01		VA	35.7		10.6	true	true	true	true	false	true	false	true	true	true	true	true	true	P	1963-10-01	2022-09-30	2.706	0.357	1976-08-26	1976-08-26	115.2	2002-11-16	2002-11-16	0.746	1.249	1.73	5.165	7.562	0.54	21550	21550	100.0	1958-06-20		42.536	18.1	42.3	196.2	326.0	521.7	890	833	0.4049	0.1002	0.2627	0.2224	0.0028	0.3868	0.0509	0.3504	0.2065	0.0032	0.1784		0.8216		0.2105	0.0154	0.724	0.42	0.577	0.979	79.1	34.65	37.5	48.1	9.1	39.56	18.73	192	3	0.34	18.1	216.66	0.679	0.685	0.0741	0.0003			0.0007					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station affected by bypassing. Low flows affected by abstraction for PWS.	Velocity area station; about 23m wide section. Flood warning station. Levels recorded from 20/06/58, Gaugings from 01/10/63. Station was moved upstream by 150m from 08/09/78. Old site had no bypassing problems (peak flow record is good) and had a stable rating.	The main control is a long and insensitive stone weir 350m d/s. Station experiences significant bypassing (4 times in 10 years) at flows above 2.3m via a depression on the right bank (e.g. July 1997 flow based on rating is 92 cumecs, but additional bypassing estimated to be about 30 cumecs). Cableway rated. Ratings derived from current meter and ADCP gaugings up to 64 cumecs (about 1.3QMED). Flows above this based on modelled floodplain flow. The two peak flow ratings are for pre- and post-1978 when the station was moved upstream.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Upland headwaters. Bedrock Schists, gneisses with some ORS. Extensive superficial deposits. Some moorland and tree cover in headwaters, arable in valley bottoms. Notable floodplain u/s. No significant catchment changes known.	Flows affected by abstraction for PWS - Glenlatterach Reservoir provides supply for Elgin. Abstraction has moderate impact on low flows (approx. 20% of the Q95 flow).
7004	Nairn at Firhall	313.0	NH8823855059	288238.0	855059.0	57°34'18.2130"N 3°52'12.9295"W	57.57173	-3.87026	Nairn	Firhall	7.2	SEPA-NW	234218	7	1979-01-01		VA	61.5		12.0	true	true	true	true	false	false	false	true	false	true	false	false	true	PN	1978-11-13	2023-09-30	5.509	0.466	1995-08-21	1995-08-21	227.4	1997-07-01	1997-07-01	0.897	2.042	3.294	12.03	17.27	0.45	16393	16393	100.0	1979-01-01		95.831	8.8	87.3	259.3	521.0	803.1	1067	942	0.2768	0.0542	0.207	0.4309	0.0033	0.268	0.0744	0.2168	0.4123	0.0062		0.3121	0.6879		0.1494	0.2201	0.4626	0.5	0.587	0.923	102.7	41.25	35.7	48.3	9.5	58.04	30.39	290	347	0.31	8.8	304.96	0.787	0.821	0.0682	0.0007			0.0009					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station draining catchment with mountainous headwaters. Flows affected by abstraction for Inverness PWS.	Velocity area station, 20m wide.	Rock protection to a d/s pipeline provides a stable low flow control. High flow control is bridge abutments. Overbank flows could occur at extreme levels but to date all flows contained. Adequately gauged to bankfull. Ratings derived from current meter gaugings up to 2.1m (about 1.3QMED), simple extrapolation beyond. Peak flow rating was revised in 2003 and a new single rating for peak flows only was judged to be suitable for whole period of record. Rating revised in 2016.	Daily level observations from April 1974 to January 1976. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Mountainous headwaters, often snowy in winter. Predominantly Old Red Sandstone largely by superficial deposits. The catchment is hill pastures and peat moorland except for the lower 20% of catchment which is cultivated. Significant forest cover. No significant catchment changes known.	7% of the upper catchment drains through Loch Duntelchaig, water is abstracted for Inverness PWS. No other significant surface storage. Flows can be affected by freezing temperatures upstream causing feeder streams to freeze overnight.
7005	Divie at Dunphail	165.0	NJ0054148032	300541.0	848032.0	57°30'41.4371"N 3°39'42.4389"W	57.51151	-3.66179	Divie	Dunphail	117.3	SEPA-NW	234206	7	1982-01-01		VA	50.4		12.0	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1977-02-14	2023-09-30	2.878	0.318	1995-08-21	1995-08-21	92.06	2002-11-15	2002-11-15	0.531	1.042	1.626	6.082	9.133	0.42	17030	15902	93.376	1982-11-01		63.692	117.4	227.9	313.3	406.5	544.4	923	871	0.1142	0.0028	0.1087	0.7564	0.0001	0.0998	0.0053	0.142	0.7343	0.0012			1.0		0.1386	0.2064	0.5313	0.48	0.352	0.925	77.4	50.31	38.1	50.4	9.5	28.11	13.99	316	336	0.22	117.4	164.62	0.542	0.968	0.0566	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with unstable gravel control. Natural regime with some surface storage in Lochindorb.	Velocity area station 15m wide.	Unstable gravel control requires re-calibration of low flows following flood events. Calibrated to 60 cumecs. Peak flow rating derived from current meter gaugings, simple extrapolation beyond. Peak flow rating was revised in 2003 and a new single rating for peak flows only was judged to be suitable for whole period of record. Rating revised in 2016.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Upland catchment. Bedrock predominantly Moinian metamorphic with granitic intrusions. Extensive superficial deposits. Peat moorland and rough pasture with some forestry and a small amount of arable land. No significant catchment changes known.	Natural regime. 20% of catchment drains through Lochindorb (surface area: 2.3 sq.km), the only significant storage.
7006	Lossie at Torwinny	20.0	NJ1344248903	313442.0	848903.0	57°31'19.1392"N 3°26'48.6370"W	57.52198	-3.44684	Lossie	Torwinny	198.5	SEPA-NW	234326	7	1986-01-01	2015-05-25	VA			15.2	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1987-03-17	2015-09-30	0.372	0.073	1995-08-21	1995-08-21	9.754	2002-11-15	2002-11-15	0.109	0.164	0.225	0.722	1.104	0.47	10425	10402	99.779				195.8	268.8	344.2	429.3	521.7	963	956	0.565		0.1749	0.2576		0.5612		0.0318	0.4007				1.0		0.0271		0.865	0.42	0.296	0.956	86.6	55.24	42.4	54.6	9.7	12.26	6.96	346	24	0.45	196.8	20.62	0.358	0.783	0.0372	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in small upland catchment.	Velocity area station, about 4m wide. Flood warning station. Removed from peak flows dataset in October 2018 (WINFAP Files v7).	Poor low flow calibration and high flows are not contained. Occasional ice build-up in very cold weather. Ratings derived from current meter gaugings up to 6.6 cumecs (about 0.8 QMED), simple extrapolation beyond.	Station closed as badly damaged in August 2014 spate and replaced by new full gauging station with cableway downstream - Ballachraggan (7012).	Small upland catchment. Impermeable catchment developed on Moinian metamorphics with significant superficial deposits. Heavily forested; some rough moorland remains in headwaters. No significant catchment changes known.	Natural regime, no abstractions.
7007	Black Burn at Monaughty	44.0	NJ1547458170	315474.0	858170.0	57°36'20.0953"N 3°24'58.1640"W	57.60558	-3.41616	Black Burn	Monaughty	49.0	SEPA-NW	234281	7	1990-04-01	2012-09-26	VA			11.0	true	false	false	false	false	false	false	false	false	false	false	false	false	P	1990-04-01	2012-09-26	0.477	0.06	1992-07-31	1992-08-01	12.92	2002-11-15	2002-11-15	0.101	0.22	0.321	0.873	1.32	0.58	8215	7112	86.573				48.8	82.3	165.2	267.3	370.4	875	807	0.4813	0.1221	0.2763	0.1131	0.0042	0.4847	0.0644	0.3792	0.0702	0.0008	0.0288		0.9712		0.4034		0.4881	0.42	0.654	0.983	106.7	27.3	35.9	46.6	9.0	16.31	8.42	169	4	0.4	48.8	43.18	0.418	0.838	0.0431	0.0001			0.0005					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a rural catchment. Station closed in 2012.	Velocity area station constructed approx 250m u/s of road bridge in 1999. Control is an old weir. Flood warning station. Station closed during 2012.	High flows can be gauged by A-frame from bridge.	Records exist for daily-read post gauge at the road bridge (Aug 1975 to Mar 1990), but these are not held on the NRFA.	Area of gentle topography underlain by mixed metamorphics and alluvial deposits in valleys. Pasture and arable farming in valley bottoms, remainder rough grazing and forestry.
7008	Nairn at Balnafoich	128.1	NH6856335166	268563.0	835166.0	57°23'16.3347"N 4°11'17.7023"W	57.38787	-4.18825	Nairn	Balnafoich	175.0	SEPA-NW	206846	7	1993-06-01		VA	33.7		19.0	true	true	false	true	false	false	false	true	false	false	false	false	false		1993-06-01	2023-09-30	2.614	0.097	2000-10-02	2000-10-02	59.18	1997-07-01	1997-07-01	0.292	0.746	1.361	6.13	9.446	0.37	11079	11048	99.72	1993-10-01		39.246	175.5	216.5	339.3	602.2	803.1	1205	1035	0.2174	0.0098	0.1691	0.5521	0.0001	0.2193	0.013	0.1962	0.5183	0.0025		0.2079	0.7921		0.0199	0.3147	0.3718	0.68	0.529	0.845	130.1	46.31	36.9	51.6	9.8	24.52	11.29	376	339	0.24	175.5	128.06	0.645	0.817	0.0585	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a typical Highland catchment.	Velocity area station; 10m wide with new concrete bridge invert control. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	Fields flood on rhb. Not a primary gauging station - stage continuously monitored but stage discharge relations are limited range: no cableway, gauged by wading. Flood warning station. Two peak flow ratings across period of record.	Daily flows suspect before April 2001 and in some cases are above peak flows (AMAX/POT).	Rugged Highland catchment underlain by impermeable Pre-Cambrian rock with Quaternary river alluvium in valley floor. Moorland and rough grazing, with some forestry on upper slopes. Limited arable and pasture on valley floor.
7009	Mosset Burn at Wardend Bridge	28.3	NJ0393055845	303930.0	855845.0	57°34'56.6203"N 3°36'30.0076"W	57.58239	-3.60834	Mosset Burn	Wardend Bridge	45.0	SEPA-NW	234331	7	1998-01-01		VA	24.3		85.0	true	true	true	true	false	false	false	true	false	false	false	false	false	N	1998-10-26	2023-09-30	0.32	0.006	2003-08-23	2003-08-24	12.81	2002-11-15	2002-11-15	0.052	0.123	0.196	0.639	0.953	0.49	9106	9069	99.594	1998-10-26		7.053	42.8	90.4	190.2	294.5	369.1	850	803	0.5013	0.0545	0.2158	0.2236		0.514	0.0209	0.2985	0.166	0.0005	0.1914		0.8086		0.4937	0.0441	0.4476	0.42	0.606	0.998	61.3	33.74	37.7	48.8	9.2	13.4	8.03	192	332	0.54	43.3	28.3	0.494	0.731	0.0601	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station providing flood warning for Forres.	Velocity area station used as flood warning station for the town of Forres (3 km d/s); Mosset Burn lies between Findhorn and Lossie and enters the sea at Findhorn Bay. Station added to peak flows dataset in August 2024 (WINFAP Files v13).	The section has a flat weir in good condition and vertical concrete banks and is gauged and rated as a velocity area station, and no weir equation exists. The weir is insensitive and so not conducive to accurate low flow estimation. High flows are gauged from the bridge where station is located. High flow estimation has been improved following the installation of a fixed acoustic instrument (Sontek IQ+) between 2019 and 2021, which measured flood events in this period and informed the revision of the rating. The revised rating (13.1) has been applied through the period of record.		Small, compact, low-lying catchment. Mostly impermeable bedrock, with complete cover of superficial deposits (half permeable). Sparsely populated. Land use is primarily forest a little open moorland.	Abstractions for spray irrigation can influence flows.
7010	Muckle Burn at Brodie	80.68	NH9794757111	297947.0	857111.0	57°35'32.8131"N 3°42'31.9646"W	57.59245	-3.70888	Muckle Burn	Brodie	22.3	SEPA-NW	234173	7	2005-01-01		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		2005-01-01	2023-09-30	1.014	0.146	2006-07-17	2006-07-17	20.85	2009-09-04	2009-09-04	0.268	0.456	0.651	1.993	2.788	0.55	6847	6847	100.0	2005-11-01		17.453	22.5	96.7	168.4	308.8	413.5	869	810	0.4361	0.0805	0.222	0.2573		0.4226	0.0782	0.2595	0.2336	0.0021	0.0606	0.1901	0.7493		0.5291	0.0973	0.3255	0.42	0.64	0.984	62.6	34.12	37.5	49.6	9.4	29.63	18.0	185	11	0.42	22.6	80.67	0.641	0.9	0.0651	0.0002			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a coastal catchment in North Scotland.	Open channel section 8m wide with gravel control. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	No cableway. Two peak flow ratings across period of record.		Coastal catchment, agricultural arable and pasture.
7011	Black Burn at Pluscarden Abbey	36.37	NJ1444357510	314443.0	857510.0	57°35'58.0598"N 3°25'59.4137"W	57.59946	-3.43317	Black Burn	Pluscarden Abbey	53.9	SEPA-NW	486057	7	2012-06-07		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		2012-06-07	2023-09-30	0.384	0.055	2014-07-25	2014-07-25	12.03	2014-08-11	2014-08-11	0.108	0.187	0.274	0.73	0.955	0.67	4133	4133	100.0	2012-06-01		4.298	54.8	86.2	164.6	262.9	370.4	873	808	0.4811	0.1105	0.2748	0.1261	0.005	0.4752	0.0643	0.3787	0.0806	0.0003	0.0111		0.9889		0.4366		0.4384	0.42	0.661	0.98	111.5	27.08	35.9	46.8	9.0	14.81	7.94	168	8	0.33	54.9	36.38	0.4	0.867	0.0413	0.0001			0.0006			2011		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a coastal catchment in North Scotland.	Open channel section with gravel control. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	No cableway. Gauged to AMAX1, all flows contained (bankfull is greater than AMAX1). Multiple peak flow ratings across period of record.		Upper coastal catchment. Arable, pasture, rough grazing, some forestry.
7012	Lossie at Ballachraggan	31.6	NJ1317449606	313174.0	849606.0	57°31'41.6798"N 3°27'05.6427"W	57.52824	-3.45157	Lossie	Ballachraggan		SEPA-NW	516803	7	2015-05-27		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		2015-05-27	2023-09-30	0.509	0.116	2018-07-26	2018-09-01	19.2	2017-06-06	2017-06-06	0.146	0.221	0.294	1.023	1.524	0.46	3049	3049	100.0	2015-05-27		7.262	183.0	245.0	318.6	407.2	521.7	965	941	0.6336	0.0007	0.1509	0.2131		0.6154	0.001	0.0579	0.3209	0.0007			1.0		0.0393		0.8902	0.42	0.363	0.964	77.6	50.67	41.5	53.5	9.6	13.37	6.56	322	2	0.41	183.0	31.6	0.322	0.859	0.0328	0.0			0.0					gdf;gmf;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, opened to replace 7006 (Torwinny).	Velocity area station, opened to replace Torwinny gauging station (7006). Station added to peak flows dataset in August 2024 (WINFAP Files v13).	The ratings are informed by fluvial modelling which improves the confidence in flow estimation for larger flood events beyond the range of gaugings. Multiple peak flow ratings across the period of record.		Small upland catchment. Impermeable catchment developed on Moinian metamorphics with significant superficial deposits. Heavily forested; some rough moorland remains in headwaters. No significant catchment changes known.	Natural regime, no abstractions.
8001	Spey at Aberlour	2654.7	NJ2778543972	327785.0	843972.0	57°28'48.7849"N 3°12'21.5105"W	57.48022	-3.20598	Spey	Aberlour	78.6	SEPA-NW	234150	8	1938-01-01	1974	VA	390.0		3.5	true	false	false	false	false	false	false	false	false	false	false	false	false	H	1938-10-01	1974-12-31	56.354	7.981	1955-08-25	1955-08-25	882.7	1970-08-17	1970-08-17	16.81	31.41	42.45	106.4	142.4	0.58	13241	12876	97.243				78.9	238.7	436.7	760.0	1306.1	1195	1133	0.1645	0.0091	0.1486	0.6608	0.002	0.1524	0.0123	0.181	0.6426	0.0046		0.018	0.971	0.011	0.0388	0.1345	0.5152	0.65	0.484	0.956	157.5	44.47	36.6	51.7	9.3	147.04	77.19	474	15	0.06	79.0	2645.62	0.874	0.976	0.0526	0.0006			0.0011					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in largely mountainous catchment. HEP production and loch storage in catchment.	Velocity area station about 45 m wide. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Natural control. Bank collapse in 1995 blocked off both inlet pipes. Peak flow rating derived from current meter gaugings up to 2.4m (about 1.1QMED), simple extrapolation beyond. Rating not developed since 1974. Assumed suitable for application to present.	Daily flows not archived since 1974.	Catchment is largely mountainous (includes all north-facing slopes of Cairngorms). Geology of granites and Moinian metamorphics. Dalradian with a little Old Red Sandstone. Diverse land use of moorland, hill grazing, some arable land in lower valley, forest cover. No significant catchment changes known.	15% of catchment controlled for HEP production - but limited net export of water (relative to annual runoff). Reservoirs for hydropower: Spey Dam (1944), Loch an T-Seilich (1941) and Cuaich (1961). Storage at Loch Insh and Insh marshes - at high flows floodplain becomes part of loch.
8002	Spey at Kinrara	1011.7	NH8809908201	288099.0	808201.0	57°09'03.6087"N 3°51'04.5609"W	57.151	-3.85127	Spey	Kinrara	210.4	SEPA-NW	234257	8	1951-01-01		VA	161.2		5.0	true	true	false	true	false	false	false	true	false	false	false	false	false	H	1951-10-01	2023-09-30	23.002	2.425	1984-08-22	1984-08-30	285.8	1966-12-18	1966-12-18	6.043	11.29	15.85	45.95	65.33	0.55	26298	26298	100.0	1951-08-07		156.014	210.0	284.8	516.0	812.1	1263.2	1340	1316	0.1031	0.0029	0.1054	0.7643	0.0013	0.086	0.0048	0.1713	0.7265	0.0037			1.0		0.014	0.1659	0.4569	0.71	0.452	0.927	175.2	49.67	36.5	52.6	9.6	70.83	37.07	534	10	0.02	210.0	1008.91	0.966	0.824	0.0565	0.0003			0.0006					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with headwaters in the Cairngorms. Part of the catchment controlled for HEP.	Velocity area station about 50m wide. Station is 5km d/s of confluence with the River Feshie.	Natural control. Cableway rated to bankfull. Well inlet pipes fractured in early 1980s (giving some data problems), re-laid March 1987. Mobile control which moved significantly upstream after the 1990 spate, resulting in a different peak flow rating. Peak flow ratings from current meter gaugings with simple extrapolation beyond. Bypassing of station over flood plain when stage exceeds 2.1m. Rating revised in 2016.	Flow of 232 cumecs gauged in both 1962 and 2006. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Mountainous headwaters, often snowy in winter. Bedrock predominantly Moinian metamorphic and granites; impermeable with approx. two thirds covered by superficial deposits. High mountain and moorland, some forestry and valley grazing. Notable floodplains. Cuaich hydropower reservoir was constructed in 1961 which controls <5% of catchment.	380 sq km developed for hydro-power with diversions and storage; substantial net export. Reservoirs for hydropower: Spey Dam (1944), Loch an T-Seilich (1941) and Cuaich (1961).
8003	Spey at Ruthven Bridge	533.8	NN759996	275900.0	799600.0	57°04'14.3486"N 4°02'54.5970"W	57.07065	-4.0485	Spey	Ruthven Bridge	221.0	SEPA-NW		8	1951-01-01	1973	VA	100.0		6.5	true	false	false	false	false	false	false	false	false	false	false	false	false	H	1951-10-01	1973-12-31	9.359	1.294	1955-08-30	1955-08-31	167.3	1966-12-17	1966-12-17	2.723	4.698	6.255	18.23	26.15	0.5	8128	8128	100.0				223.7	293.8	477.5	791.9	1047.2	1392	1375	0.0813	0.0015	0.1201	0.7678	0.0012	0.0632	0.0025	0.2311	0.6952	0.0026			1.0			0.11	0.5151	0.73	0.424	0.954	177.5	50.37	38.0	53.8	9.8	51.98	27.57	511	134	0.01	223.7	532.25	0.879	0.809	0.0562	0.0003			0.0006					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with some of the catchment controlled for HEP. Station closed 1973.	Velocity area station with some of the catchment controlled for HEP. Station closed 1973.				287 sq km controlled for HEP production; major net export.
8004	Avon at Delnashaugh	542.8	NJ1854835197	318548.0	835197.0	57°23'59.4644"N 3°21'25.3858"W	57.39985	-3.35705	Avon	Delnashaugh	156.0	SEPA-NW	234198	8	1952-01-01		VA			4.0	true	true	true	true	false	false	true	true	true	true	true	false	true	N	1952-10-01	2023-09-30	14.635	1.925	1955-02-17	1955-02-17	259.4	1970-08-17	1970-08-17	4.114	7.789	10.49	27.79	38.53	0.55	25932	25932	100.0	1952-08-03		211.427	151.4	310.5	493.0	767.1	1306.1	1234	1108	0.1174	0.0023	0.1692	0.7001	0.0009	0.1099	0.0064	0.1609	0.7203	0.0007		0.086	0.8599	0.054	0.0009	0.1574	0.4307	0.63	0.451	0.989	178.2	43.44	39.9	55.5	9.3	64.94	28.8	525	10	0.1	151.7	540.69	0.399	0.905	0.0257	0.0005			0.0002			1951		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with headwaters draining the northern Cairngorm peaks.	Velocity area station with cableway. Station control washed away during August 2014 spate, as a result station relocated 20m upstream on 21/05/2016.	Natural control. Some bypassing above around 3m. High water velocities (steep catchment) during highest flows accompanied by large bed load movements. Rating liable to change after major floods. Station reconstruction in 1985 resulted in improved hydrometric performance. There are four distinct ratings in place for flood estimation through the period of record. Rating QHigh1952 is applied up to 17/08/1970 when a large flood caused sufficient channel change. Rating QHigh1970 is used up until the large flood of 11/08/2014, which again radically altered the channel and control. These flood segments are tagged onto a large number of low flow segments in the SEPA record that capture the dynamic nature of the river and the frequent changing of the section control that governs low flow estimation. The 2014 flood is calculated using a transition feature, where the derived figure sits between the new and old rating. Rating 40.1 was introduced after 11/08/14 to capture the new channel state. This rating is fairly limited, being based on only a few gaugings, with the highest being at 1.013m (measured at 108.8 cumecs). Hence there is lower confidence in the flood estimates between 11/08/14 and 21/05/16. The station was rebuilt 20m upstream in 21/05/16 and the rating for the period after 21/05/16 is well calibrated, benefiting from a flood gauging on 18/11/22 at 3.00m, with a measured flow of 330 cumecs. Hence the confidence in the flood estimation is restored after 21/05/2016.	Lowest levels during the period 1981-84 estimated from available gauge readings, as levels fell below inlet pipe. Low February 1955 flow thought to be due to a frozen catchment. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5) and August 2024 (WINFAP Files v13). Chart data between 1952 & 1986 was digitised in 2016.	Mountainous headwaters draining northern side of highest Cairngorm peaks, often snowy in winter. Geology of gneisses and metamorphosed limestones with some igneous, and some sandstone. Land use of forest cover with moorland, rough grazing and a little pastoral. Minimal floodplain. Plantation forestry has developed in the lower portions of the catchment.
8005	Spey at Boat of Garten	1267.8	NH9469119208	294691.0	819208.0	57°15'05.0103"N 3°44'49.3034"W	57.25139	-3.74703	Spey	Boat of Garten	197.3	SEPA-NW	234168	8	1951-01-01		VA	402.0		9.0	true	true	true	true	false	false	false	true	false	true	false	false	true	H	1951-10-01	2023-09-30	29.626	3.842	2006-07-26	2006-07-26	348.1	1966-12-18	1966-12-18	8.668	16.16	21.82	56.9	77.99	0.58	26298	26298	100.0	1951-10-01		170.15	199.1	264.4	497.5	814.3	1291.9	1307	1277	0.1397	0.0042	0.1016	0.7297	0.002	0.1218	0.0059	0.1562	0.7003	0.0052			1.0		0.0437	0.1417	0.4485	0.7	0.47	0.917	174.2	47.64	36.4	52.5	9.5	88.23	47.44	522	348	0.04	199.1	1261.3	0.974	0.841	0.0589	0.0005			0.0011					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with some of the catchment controlled for HEP.	Velocity area station. Station re-located d/s of road bridge.	Cableway rated. Natural control and relatively frequent rating changes. Nearly all flows contained; some bypassing can occur, but it is considered insignificant. Two peak flow ratings revised in 2016, derived from current meter gaugings, simple extrapolation beyond, have been applied to the whole record.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Chart data between 01/10/1951 to 17/01/1988 was digitised in 2016.	Upland catchment with mountainous headwaters often snowy in winter. Bedrock granites and Moinian metamorphics overlain by superficial deposits over more than half of the catchment. Land use of forest cover moorland and pastoral and some arable farming. Cuaich Dam impounded during period of record (1961).	Loch Insh and Insh marshes may influence flood behaviour. 380 sq km developed for hydro-power with diversions and storage; substantial net export. Reservoirs for hydropower: Spey Dam (1944), Loch an T-Seilich (1941) and Cuaich Dam (1961). Forests are partly native woodland, partly plantations.
8006	Spey at Boat o Brig	2861.2	NJ3185051788	331850.0	851788.0	57°33'03.7481"N 3°08'25.3970"W	57.55104	-3.14039	Spey	Boat o Brig	43.1	SEPA-NW	234167	8	1952-01-01		VA	730.8		3.0	true	true	true	true	false	true	false	true	true	true	true	true	true	H	1952-10-01	2022-09-30	65.645	9.093	1955-08-08	1955-08-08	1031.0	1970-08-17	1970-08-17	19.42	36.29	50.29	125.3	165.9	0.59	25567	25567	100.0	1952-08-01		500.733	43.3	229.1	420.6	749.7	1306.1	1183	1119	0.1806	0.0129	0.1563	0.6326	0.0025	0.1653	0.0172	0.1882	0.6174	0.005		0.0214	0.9642	0.0143	0.038	0.1254	0.5324	0.63	0.485	0.959	156.9	43.98	36.8	51.6	9.2	162.27	87.36	460	17	0.06	43.4	2852.39	0.906	0.975	0.0525	0.0009			0.0013			1951		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the most downstream station on the Spey.	Velocity area station 65m wide. Cableway rated. Lowest station currently operating on the Spey.	Natural control. Floods above 2.5m bypass station on lb through arches of railway bridge, but this only represents a small percentage of the overall flow. Peak flow ratings derived from current meter gaugings, simple extrapolation beyond. Rating has been derived using only post-2009 gaugings and was revised in 2016.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Chart data between 1953 & 1986 was digitised in 2016.	Mountainous catchment (includes all north slopes of Cairngorms), often snowy in winter. Bedrock is predominantly Moinian metamorphics with granite intrusions. Dalradian with a little Old Red Sandstone. Landuse is moorland, hill grazing, forest cover, with limited arable land downstream. Cuaich Dam impounded during period of record (1961).	Storage at Loch Insh and Insh marshes - at high flows floodplain becomes part of loch. 380 sq km developed for hydro-power with diversions and storage; limited net impact on annual runoff (small loss). Reservoirs used for hydropower: Spey Dam (1944), Loch an T-Seilich (1941) and Cuaich (1961). Water use also for aluminium industry.
8007	Spey at Invertruim	400.4	NN6876196425	268761.0	796425.0	57°02'24.6183"N 4°09'52.1814"W	57.04017	-4.16449	Spey	Invertruim	242.5	SEPA-NW	234248	8	1952-01-01		VA	189.0		8.0	true	true	false	true	false	false	false	true	false	false	false	false	false	H	1952-10-01	2023-09-30	6.057	0.012	1999-06-26	1999-08-12	200.4	1992-01-02	1992-01-02	1.583	2.967	3.81	10.56	16.75	0.52	25932	25856	99.707	1952-09-16		92.42	234.9	308.4	483.2	789.6	1047.2	1445	1430	0.0941	0.0011	0.1105	0.7628	0.0001	0.0761	0.0008	0.2463	0.6701	0.0009			1.0			0.0829	0.489	0.75	0.411	0.945	181.3	51.15	39.5	55.6	10.0	41.37	21.76	518	312	0.03	234.9	401.74	0.808	0.805	0.0539	0.0001			0.0			1994..1997	1995-01-01..1998-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. The highest station on the Spey.	Velocity area station, 45m wide Cableway rated. Highest station on the Spey. Station re-built in May 2000.	Natural control; frequent rating changes. Bypassing at flows above 1.8m on both banks. Rating derived from current meter gaugings up to 2.589m/195.2 cumecs measured. The record between 1995 and 2000 is either of poor quality due to broken inlet pipes or is missing. A station rebuild was completed on 09/05/2000 resulting in improved data quality thereafter. One peak flow rating across period of record.	Unrepresentative period from 01/01/1995 to 28/10/1998 as inlet pipes broken resulted in a deteriorating data quality, then missing period caused by further deterioration of data quality (28/10/1998 and 24/02/2000) and station rebuild (24/02/2000 to 09/05/2000). Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5) and then revised again in August 2024 (WINFAP Files v13).	Mountainous headwaters, often snowy in winter. Granite and Moinian metamorphic. Mainly moorland, limited pastoral in valley bottoms. Cuaich Dam impounded during period of record (1961).	200.4 sq.km controlled for HEP by British Aluminium, 86.4 sq.km controlled by Scottish Electric (total 72%); diversions and storage influence regime, major reduction in runoff. Reservoirs for hydropower: Spey Dam (1944), Cuaich Dam (1961).
8008	Tromie at Tromie Bridge	130.3	NN7892699629	278926.0	799629.0	57°04'18.1866"N 3°59'55.0975"W	57.07172	-3.99864	Tromie	Tromie Bridge	240.0	SEPA-NW	234327	8	1952-10-01	2010-10-01	VA	151.7		5.0	true	true	false	true	false	false	false	false	false	false	false	false	false	H	1952-10-01	2009-12-31	2.517	0.354	1955-08-04	1955-08-05	96.18	1990-02-04	1990-02-04	1.203	1.469	1.686	3.764	6.673	0.61	20911	20911	100.0	1952-09-08		50.652	243.7	410.0	625.3	821.1	950.4	1450	1436	0.0345		0.0472	0.8861		0.0196	0.0007	0.0699	0.8956	0.0005			1.0			0.408	0.2245	0.72	0.448	0.898	211.8	53.49	38.0	56.7	10.1	29.5	18.71	622	7	0.1	244.3	131.61	0.497	0.792	0.0312	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on a tributary of the Spey. Large proportion of catchment controlled for HEP.	Velocity area station, about 15m wide. Cableway rated. Station closed in 2010. No significant catchment changes.	Problems with rock/boulder control due to spates. Control has been re-built twice in 1990s. Normal shifting of gravels may slight influence ratings. The river bed was subject to major erosion and scour during floods of September and November 2009. New peak flow rating in 1996, applied from 1953 to the spate of April 1990 (from current meter gaugings up to 1.2m (QMED), simple extrapolation beyond). Post-1990 rating based on few gaugings (up to 0.5QMED) and will need revision.	Data post-2009 floods is not held on the NRFA.	Mountainous (part of Cairngorms), often snowy in winter. Mountains, moorland, almost no tree cover.	Very turbulent flow. Large proportion (>70%) of the catchment developed for hydro-power with major diversions out of catchment. Reservoir for hydropower: Loch an T-Seilich (1941).
8009	Dulnain at Balnaan Bridge	272.2	NH9772224763	297722.0	824763.0	57°18'07.0473"N 3°41'56.8154"W	57.30196	-3.69912	Dulnain	Balnaan Bridge	223.7	SEPA-NW	234163	8	1952-01-01		VA	100.0		11.0	true	true	true	true	false	false	true	true	false	true	false	false	true	N	1952-10-01	2023-09-30	6.068	0.595	1995-08-21	1995-08-21	162.4	1966-12-17	1966-12-17	1.101	2.387	3.708	13.17	19.14	0.44	25932	25202	97.185	1952-10-01		88.368	222.4	274.1	448.7	673.5	875.4	1056	1012	0.1445	0.0056	0.1302	0.7153	0.0001	0.14	0.0111	0.1548	0.6892	0.0036			1.0		0.0144	0.2306	0.5758	0.68	0.498	0.994	117.9	46.63	33.1	46.8	9.1	44.15	21.22	461	94	0.19	222.6	272.2	0.576	0.677	0.0505	0.0002			0.0006					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in upland catchment draining into the Spey.	Velocity area station about 22m wide. Flood warning station.	Cableway rated with natural control, subject to relatively frequent change but generally good low flow calibration. Bypassing occurs at extreme flows on rb at levels above 2.5m. Well-fitted peak flow rating derived from current meter gaugings up to 151 cumecs (about 1.5QMED), simple extrapolation beyond. One peak flow rating across period of record.	Patchy daily flow records for mid-1950s. Frozen catchment can produce notable low flows (e.g. 22/1/85). Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Upland catchment; mountainous headwaters, often snowy in winter. Granites and Moinian metamorphic rocks dominate bedrock geology; significant superficial deposits. Landuse is moorland and forestry with some pastoral in valley bottoms. Minimal floodplain. No significant catchment changes known.	Natural regime, not affected by diversions or storage.
8010	Spey at Grantown	1748.8	NJ0328226785	303282.0	826785.0	57°19'16.7743"N 3°36'27.6230"W	57.32133	-3.60767	Spey	Grantown	192.5	SEPA-NW	234229	8	1953-01-01		VA	520.0		5.0	true	true	true	true	false	false	false	true	false	false	true	false	false	H	1953-10-01	2023-09-30	38.412	5.887	2018-07-08	2018-07-08	480.4	1990-02-06	1990-02-06	10.77	20.44	28.64	74.71	100.8	0.58	25567	25567	100.0	1951-11-29		240.878	190.7	253.5	464.2	783.3	1291.9	1235	1194	0.1574	0.006	0.1178	0.6989	0.0021	0.1422	0.0086	0.1639	0.6711	0.0057		0.0006	0.9994		0.0522	0.1471	0.4862	0.69	0.484	0.938	158.7	46.42	35.6	51.1	9.3	102.29	51.13	495	13	0.05	190.7	1745.84	0.958	0.835	0.0612	0.0005			0.0012			1951		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Part of the catchment is controlled for HEP.	Velocity area station about 60m wide.	Cableway rated with natural control. Improved data quality following move of recorder and cableway to a united site in 1987. All flows contained to date. Three ratings used which were revised by SEPA in 2016. Current meter gaugings between 1952-1955 were ignored.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Upland catchment, often snowy in winter. Granites and Moinian metamorphic bedrock with significant superficial deposits. Landuse is moorland, forestry, pastoral with arable in valley bottoms. Notable floodplains.	Loch Insh and Insh Marshes: at high flows floodplain becomes part of loch, significant storage controlling about 50% of catchment. 22% of catchment developed for hydro-power with diversions and storage, significant net export, water use also for aluminium industry. Reservoirs for hydropower: Spey Dam (1944), Loch an T-Seilich (1941) and Cuaich (1961). Low flow network set up in the 1990s. At Q95 compensation flows increased from Spey Dam. Interactions between Scottish Water, Spey Salmon Fisheries and Aluminium Industry.
8011	Livet at Minmore	104.0	NJ2016029003	320160.0	829003.0	57°20'40.2488"N 3°19'41.6027"W	57.34451	-3.32822	Livet	Minmore	215.1	SEPA-NW	234279	8	1981-01-01		VA	45.0		9.0	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1978-04-12	2023-09-30	2.25	0.515	2003-08-08	2003-08-08	40.25	2022-11-18	2022-11-18	0.768	1.242	1.65	4.073	5.701	0.62	16608	16287	98.067	1981-03-25		33.962	215.5	306.5	408.2	655.5	803.4	1141	1001	0.1475	0.0006	0.2869	0.5472	0.0003	0.1228	0.0071	0.2883	0.5808	0.0009		0.0386	0.9612	0.0003		0.0854	0.6201	0.63	0.449	1.0	168.4	41.99	37.0	50.4	9.0	22.22	11.38	445	333	0.17	215.8	102.78	0.322	0.734	0.0241	0.001			0.0001					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in an upland catchment with a natural regime and no significant abstractions.	Velocity area station about 13m wide.	Legacy notes in NRFA describe a boulder/rubble control (remnant of an old weir), good low flow calibration, Build up of debris can occur on weir control. The remnants of this weir have long since eroded out so the control is effectively a natural cobble and boulder riffle. Some bypassing on left bank occurs at extreme flows, originating from further upstream. Tapping pipe shortened in 1986 to avoid velocity drawdown. Before 25/09/87 levels recorded in well were often less than readings on gauge. Two peak flow ratings across period of record, with the most recent rating derived from gaugings up to 1.945m, 63.8 cumecs, simple extrapolation beyond. Before 25/09/1987 an adjustment had to be made on gauged stages - rating derived from the adjusted gaugings.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Upland catchment. Mountainous headwaters, often snowy in winter. Moorland with some afforestation developed on complex basement geology - metamorphics and igneous rocks, overlain by significant superficial cover. No significant catchment changes known.	Natural regime, no significant abstractions (minor distillery abstractions in the past).
8013	Feshie at Feshie Bridge	231.0	NH8498604711	284986.0	804711.0	57°07'08.0377"N 3°54'03.8985"W	57.1189	-3.90108	Feshie	Feshie Bridge	231.9	SEPA-NW	234217	8	1992-11		VA	75.0		8.0	true	true	true	true	false	false	true	true	false	false	false	false	false	N	1992-11-11	2023-09-30	7.747	0.876	1995-08-21	1995-08-21	121.5	1997-03-01	1997-03-01	1.838	3.576	5.25	15.65	22.32	0.48	11281	10915	96.756	1992-10-01		116.085	236.0	327.2	619.5	913.6	1263.2	1351	1286	0.1259		0.0347	0.8309		0.1181	0.0012	0.0427	0.8347	0.0014			1.0		0.0125	0.1839	0.3865	0.7	0.482	0.993	180.8	49.14	35.4	52.1	9.4	39.7	18.61	618	324	0.11	236.4	229.63	0.567	0.757	0.0408	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging an upland catchment with natural flow regime.	Velocity area station with a boulder control. Old station, 0.5km upstream operated between 1951-1975 (no flow data published). Station added to peak flows dataset in September 2019 (WINFAP Files v8).	Boulder control is liable to considerable movement in moderate to extreme spates. All flows contained. Cableway rated. One peak flow rating applied across period of record.		Upland catchment. Moinian metamorphics of Grampian Mountains overlaid with glacial material, and granite of Cairngorms. Mountainous moorlands, pasture with some forestry in lower reaches.	Natural flow regime.
8015	Fiddich at Auchindoun	44.5	NJ35503995	335500.0	839950.0	57°26'42.9401"N 3°04'34.6007"W	57.44526	-3.07628	Fiddich	Auchindoun	177.5	SEPA-NW	234158	8	1991-06-01	2010-11-01	VA			10.6	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1991-06-01	2010-09-20	1.008	0.207	2006-07-31	2006-07-31	35.37	2002-10-23	2002-10-23	0.294	0.492	0.661	1.789	2.762	0.55	7052	6656	94.385				173.8	261.0	389.5	566.8	776.0	1229	1034	0.3652	0.011	0.1443	0.4722	0.0007	0.1849	0.0213	0.1633	0.6299	0.0006			1.0				0.6115	0.61	0.387	0.998	190.6	46.32	38.4	52.0	9.0	19.31	9.27	401	342	0.19	173.8	43.84	0.199	0.646	0.0138	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural upland catchment. Station closed in 2010 due to hydrometric issues.	Velocity area station on deep, wide pool. Rock bar provides control. Station closed in November 2010 due to long-term hydrometric issues and should be treated with caution.	A new downstream bridge enables high flows to be gauged, otherwise by wading. Well is erected in channel behind a tree and rests on bedrock.	Former post gauge 700m d/s records exist from Feb 1974 - Jun 1990, but these are not held on the NRFA.	Upland catchment. The Fiddich rises in hills to NE of Cairngorm plateau and drains an area of mixed metamorphic geology; more than half covered by superficial deposits. Significant forestry and grasslands.
8016	Conglass Water at Auchriachan	40.8	NJ17551912	317550.0	819120.0	57°15'19.0690"N 3°22'05.7908"W	57.2553	-3.36828	Conglass Water	Auchriachan	335.0	SEPA-NW		8	1992-07-01	1995-08-31	VA			12.4	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1992-08-01	1995-08-31	0.807	0.192	1994-08-22	1994-08-22	9.367	1993-01-16	1993-01-16	0.239	0.41	0.545	1.524	2.323	0.56	1126	1099	97.602				322.9	386.6	503.4	659.8	794.2	1170	1045	0.1338		0.2086	0.6526	0.0007	0.116		0.1334	0.7505	0.0001		0.3372	0.6628			0.3127	0.428	0.63	0.321	1.0	157.6	51.34	37.4	51.4	9.2	12.26	6.9	512	313	0.27	323.0	40.7	0.18	0.527	0.0138	0.0006			0.0003					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a mountainous catchment in the north east Cairngorms. Closed in 1995.	Straight, steep reach with gauge located on a pool. Low flow control provided by kerb stones built into bed (summer 1991). Post-gauge installed 1974 for resource monitoring; continuous recording 1/8/92 - 31/8/95. Station abandoned due to floods of Sep 1995.	High velocities limit gauging range. All flows contained, but rating uncertainty for higher flows.		Mountainous catchment in NE Cairngorms with steep slopes. Major snow storage in winter, some not thawing until May/Jun. Geology: mixture of schist, quartzite and ORS. Heather moorland supports grazing; some forestry on lower ground.
8017	Burn of Carron at Dailuaine	15.2	NJ2368041545	323680.0	841545.0	57°27'27.8989"N 3°16'25.1630"W	57.45775	-3.27366	Burn of Carron	Dailuaine	100.0	SEPA-NW		8	1991-01-01	1994-04-11	VA			17.5	true	false	false	false	false	false	false	false	false	false	false	false	false	EI	1991-01-14	1994-04-11	0.26	0.028	1991-09-13	1991-09-13	4.798	1993-01-16	1993-01-16	0.063	0.108	0.155	0.53	0.784	0.43	1184	1165	98.395				96.3	188.2	269.1	475.5	735.1	892	902	0.2472	0.0486	0.2086	0.4819	0.0096	0.2698	0.0383	0.2292	0.4556	0.0071			1.0				0.8274	0.56	0.518	0.979	125.3	34.19	37.0	48.0	8.9	7.85	3.98	302	345	0.47	96.3	15.85	0.256	0.938	0.023	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a steep mountainous catchment. Station closed in 1994.	Velocity area station established to support pollution monitoring. Station closed Apr 1994.	Some problems with shifting control and occasional backing up from Spey 60m d/s. All gaugings by wading, but none above 0.5m due to high velocities and lack of suitable bridge.	Daily read post gauge records available Apr 1984 - Apr 1990.	Steep, mountain catchment on N side of Cairngorm massif. Granite geology, with land use of rough grazing and forestry.	Distilleries abstract from catchment, although cooling water is returned.
8018	Avon at Tomintoul	185.0	NJ1615117523	316151.0	817523.0	57°14'26.5235"N 3°23'27.2972"W	57.2407	-3.39092	Avon	Tomintoul	307.1	SEPA-NW	234325	8	1993-01-01	2003-10-31	VA			7.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1993-01-04	2003-09-30	7.268	1.169	1995-08-21	1995-08-21	129.2	1995-09-09	1995-09-09	2.097	3.978	5.645	13.21	18.1	0.53	3922	3763	95.946				308.0	477.9	660.5	964.8	1306.1	1434	1336	0.0198		0.0411	0.9277		0.0108		0.0283	0.958	0.0003		0.0338	0.8842	0.082	0.0021	0.2308	0.1766	0.63	0.445	0.973	207.2	46.17	44.6	64.1	9.8	40.39	18.91	686	35	0.17	308.2	208.22	0.394	0.912	0.0243	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging an upland catchment covered in heath. Closed in 2003.	Velocity area station. Station closed during 2003.		Daily post gauge records from March 1974 to December 1992, but these are not held on the NRFA.	Upland catchment. Predominantly impermeable bedrock. Land use is mainly heathland.
8021	Nethy at Forest Lodge	38.8	NJ0223216015	302232.0	816015.0	57°13'27.8256"N 3°37'15.0410"W	57.2244	-3.62084	Nethy	Forest Lodge	291.0	SEPA-NW	234220	8	1996-03-14	2008-07-31	VA			12.0	true	false	false	false	false	false	false	false	false	false	false	false	false		1996-03-14	2008-03-31	1.285	0.244	2003-08-24	2003-08-24	37.95	1999-06-06	1999-06-06	0.394	0.702	0.976	2.166	2.918	0.62	4401	3609	82.004				282.5	365.0	536.0	918.4	1232.7	1371	1258	0.1036		0.0245	0.8687		0.1078		0.0523	0.8379	0.0003			1.0		0.0631	0.0018	0.5045	0.63	0.432	0.986	227.8	49.49	40.6	59.3	9.7	16.24	8.26	588	355	0.25	283.4	38.22	0.424	0.671	0.0274	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a very steep upland catchment. Closed in 2009.	Secondary, velocity area station. Natural control. Station closed during 2009.	No cableway. All flows measured by wading. High flows extrapolated.	Gaps in record due to instrument failure.	Very steep upland catchment (Nethy flowing from Cairngorn Massif). Moinian metamorphics with granite intrusions > 600 m; superficial deposits (glacial) over lower half. Land use primarily mountains; some forestry.
9001	Deveron at Avochie	441.6	NJ5321746431	353217.0	846431.0	57°30'20.3268"N 2°46'56.5606"W	57.50565	-2.78238	Deveron	Avochie	81.8	SEPA-NW	234161	9	1959-01-01		VA	250.0		11.0	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1959-10-01	2023-09-30	8.753	1.295	1976-08-26	1976-08-26	176.1	2002-11-15	2002-11-15	2.307	4.191	6.055	16.5	23.76	0.59	23376	23376	100.0	1959-10-01		128.516	81.6	166.1	327.5	500.7	754.2	1078	988	0.2289	0.1182	0.3084	0.3364	0.0056	0.2255	0.0912	0.3334	0.3453	0.0043		0.0664	0.9336		0.0389	0.0916	0.5983	0.53	0.505	0.998	124.5	37.32	36.2	51.8	8.6	54.31	29.26	329	55	0.12	81.7	444.91	0.404	0.802	0.0343	0.0017			0.0021					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the upper Deveron. Mountainous headwaters.	Velocity area station, about 35 m wide.	Cableway rated. Stable rubble weir control, rather insensitive. Inlet pipes periodically silted in early 1980s, extended in March 1985. Peak flow rating was revised in 1999 and a new single rating was judged to be suitable for whole period of record. Well-fitted rating derived from current meter gaugings, simple extrapolation beyond. Some gaugings up to 2.1m. Rating revised in 2016.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Chart data between 1959 & 1989 was digitised in 2016.	Upland catchment with mountainous headwaters, often snowy in winter. Complex granites and basic intrusives with Dalradian metamorphics, >2/3 overlain by superficial deposits. Moorland, pastoral and arable in valley and some forestry. Huntly is the only substantial settlement. No significant catchment changes known.	Natural regime.
9002	Deveron at Muiresk	954.9	NJ7055149833	370551.0	849833.0	57°32'15.5973"N 2°29'36.7201"W	57.53767	-2.49353	Deveron	Muiresk	25.3	SEPA-NW	234286	9	1960-01-01		VA	340.0		9.0	true	true	false	true	false	true	false	true	true	true	true	true	true	N	1960-10-01	2022-09-30	16.851	2.063	1976-08-27	1976-08-27	387.7	1968-05-05	1968-05-05	3.765	7.5	11.34	33.26	46.99	0.57	22645	22645	100.0	1960-06-21		268.355	25.7	114.1	209.5	428.9	754.2	994	928	0.2102	0.238	0.3469	0.1931	0.0069	0.2112	0.1998	0.3889	0.1933	0.0056		0.0307	0.9465	0.0227	0.0289	0.0661	0.7327	0.46	0.511	0.997	100.9	35.27	34.8	48.6	8.3	84.64	45.87	244	73	0.09	25.7	961.45	0.469	0.878	0.0412	0.0022			0.0024					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the most downstream on the Deveron, draining mountainous headwaters.	Velocity area station, about 38m wide.	Cableway rated, natural control. Lots of out of bank flow. Bypassing occurs on lb above about 3.2m; floodplain flows have been measured. Reasonably fitted rating derived from current meter gaugings, simple extrapolation beyond. Peak flow rating was revised in 1999 and a new single rating was judged to be suitable for the whole period of record. Rating revised in 2016.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Chart data between 1960 & 1987 was digitised in 2016.	Mountainous headwaters, often snowy in winter. Complex granite and older basic intrusives with Dalradian metamorphics. Some ORS. Mostly impermeable bedrock, >80% overlain by superficial deposits. Some high moorland, mainly pastoral and arable; forestry. Minimal floodplains, mostly downstream. No significant catchment changes known.	Natural regime. Water abstraction point immediately d/s; no visible effect on level records.
9003	Isla at Grange	176.1	NJ4935050614	349350.0	850614.0	57°32'34.0771"N 2°50'51.9901"W	57.5428	-2.84778	Isla	Grange	91.7	SEPA-NW	234228	9	1960-01-01		VA	50.0		8.4	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1969-10-01	2023-09-30	2.839	0.28	1976-08-26	1976-08-26	80.45	2002-11-15	2002-11-15	0.61	1.179	1.743	5.531	8.298	0.52	19723	19357	98.144	1960-07-08		55.388	93.1	135.6	201.7	292.2	416.1	957	900	0.3077	0.1787	0.378	0.1078	0.0109	0.2879	0.2011	0.3948	0.1027	0.0133			0.8921	0.1079		0.0907	0.8223	0.42	0.474	0.994	84.6	36.31	36.3	48.9	8.5	27.65	14.7	208	98	0.1	93.2	179.98	0.416	0.664	0.0401	0.0051	0.686	0.746	0.0055	0.794	0.723			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in upland catchment. Natural regime.	Velocity area station, about 17m wide.	Cableway rated, natural control. Problems with weed growth prior to 1969. Bypassing occurs on the floodplain on lb at levels above 2m however the out of bank flows can only extend 15-20m before meeting a confining rise in the land. Rating derived from current meter gaugings, simple extrapolation beyond. Peak flow rating was revised in 1999 and a single rating was judged to be suitable for whole period of record. Rating revised again 2016.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Chart data between 1960 & 1989 was digitised in 2016.	Upland catchment. Bedrock mainly Moinian metamorphic with, small amounts of intrusive basic. Extensive superficial deposits. Mostly forestry, pasture and arable. Minimal floodplains.	Natural regime.
9004	Bogie at Redcraig	179.0	NJ5193437440	351934.0	837440.0	57°25'29.1272"N 2°48'07.2553"W	57.42476	-2.80202	Bogie	Redcraig	120.0	SEPA-NW	234298	9	1980-01-01		VA	50.0		12.0	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1980-12-01	2023-09-30	3.177	0.646	1989-09-19	1989-09-19	44.84	2022-11-18	2022-11-18	0.932	1.701	2.413	5.928	7.672	0.71	15644	15644	100.0	1980-12-01		28.472	120.5	179.8	290.5	427.2	707.0	1045	955	0.2716	0.173	0.3453	0.2057	0.0042	0.3169	0.1214	0.3805	0.1793	0.0019		0.1291	0.8709		0.0425	0.0283	0.6081	0.53	0.567	0.998	132.0	32.61	35.4	51.6	8.4	30.03	14.51	297	71	0.12	120.6	182.43	0.307	0.89	0.0313	0.0012			0.0014					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in an upland catchment.	Velocity area station about 17m wide.	Cableway rated. Stable broken rubble weir control. Good low flow calibration. Bypassing occurs at flows above 1.8m, water shortcuts the bend of the river on right bank. Gaugeboard record for downstream site, 1973-1981. Gaugeboard lowered May 1996 and again November 2003. Peak flow rating derived from current meter gaugings up to bankfull; simple extrapolation beyond. Multiple ratings across period of record.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Upland catchment. Geology is Dalradian metamorphics and large areas of ORS. Significant superficial deposits. Some high moorland, forestry, pastoral and arable in valleys. No significant catchment changes known.	Natural regime, no abstractions.
9005	Allt Deveron at Cabrach	67.0	NJ3783929102	337839.0	829102.0	57°20'53.3760"N 3°02'04.4370"W	57.34816	-3.03457	Allt Deveron	Cabrach	288.0	SEPA-NW	234176	9	1948-01-01		CB	18.0		7.0	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1948-12-01	2023-09-30	1.581	0.248	1959-10-08	1959-10-08	41.6	2022-11-18	2022-11-18	0.438	0.718	0.967	3.076	4.879	0.49	27332	26963	98.65	1948-12-01		39.746	289.2	340.1	436.5	549.9	720.8	1172	1071	0.1006	0.0001	0.2158	0.6794		0.0439	0.0013	0.2143	0.7405			0.0857	0.9143			0.1806	0.4498	0.59	0.396	1.0	118.3	46.17	37.7	53.9	9.0	16.74	7.87	439	1	0.15	289.6	68.08	0.315	0.687	0.0252	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir gauging an upland catchment with a natural regime.	The station has been in operation since 1948 and SEPA digital records begin at 29/01/1990. The pre-1990 record exists as paper charts from a clockwork recorder. Station added to peak flows dataset in August 2024 (WINFAP Files v13).	The station control is a compound broad-crested weir with a low flow notch. Water flows from the low flow notch and over the main crest at around 0.330m. Flows are derived from gaugings and a rating. The stability of the weir allows one rating to be applied through the digital record from 1990 and this rating potentially can be applied back to the construction of the weir. Digitising of SEPA records is required to determine if current weir has been in place since the start of operations in 1948. The confidence of flood estimation from this station was greatly improved by a gauging at 1.9m on 18/11/2022, with a measured flow of 59 cumecs,. An improved rating was applied through the digital archive and hence allowed the station to be included in the peak flow dataset from 2023. Although bankfull is around 1.5m, where the river spills onto the floodplain on the far bank and bypasses the weir, the location and technique of the flood gauging on 18/11/2022 meant that no flow was missed. The gauging location was upstream from the station, just downstream from the road bridge before the river spilled over the bank.	Pre 1958 record is of inconsistent quality with frequent gaps - faulty recorder operation. Occasional very low flows e.g. Jan 1978, March 1979 and Feb 2021, occur as a result of ice.	Upland catchment with rugged topography. Mostly moorland developed on complex basement geology - principally metamorphics. Some grassland and forestry.	Natural regime.
9006	Deskford Burn at Cullen	46.5	NJ5041866670	350418.0	866670.0	57°41'13.6426"N 2°49'59.6310"W	57.68712	-2.83323	Deskford Burn	Cullen	15.0	SEPA-NW	234192	9	1989-12-01		VA			20.5	true	true	true	true	false	false	false	true	false	false	false	false	false	I	1989-12-01	2023-09-30	0.608	0.011	2014-08-07	2014-08-07	20.53	1997-07-01	1997-07-01	0.094	0.224	0.353	1.171	1.867	0.48	12357	12355	99.984	2010-02-05		17.671	7.3	49.1	144.2	229.6	318.5	827	823	0.4067	0.3302	0.2327	0.0263	0.0003	0.4406	0.3431	0.2053	0.0078	0.0031		0.2376	0.7558	0.0066	0.1504	0.0108	0.7916	0.43	0.549	0.996	77.6	33.0	32.5	44.3	8.0	15.12	7.98	141	27	0.27	7.9	47.13	0.282	0.756	0.0309	0.0015			0.0003			1996..1999		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a coastal catchment in North Scotland. Some influence of abstraction.	Representative site for Banff coastal streams. 8m wide section above old mill weir. Station added to peak flows dataset in September 2020 (WINFAP Files v9).	The main control was an old mill weir, which has been significantly eroded after floods in 2009 and 2014. Two peak flow ratings are in place for before and after the 2014 flood. A cableway was installed during the station rebuild in 2014 and this allowed flood gauging at the station. The highest gauging was captured on 17/06/2016 at 1.568m, with a measured flow of 39.1 cumecs. There is some out of bank flow after around 1.4m. The weir was eroded during a flood in 2009 as the associated rating shift is currently applied from the flood of 04/09/2009. Although there was a larger flood on 02/11/2009. a single gauging in the intervening period on 08/10/2009 provides evidence that the erosion can indeed be attributed to the September flood. The station was moved to the right bank in 2014, with a logger installed in the new station on 16/04/2014. This was operated in tandem with the old station for three months. Not long after the new station was operational, it was established that the new ramp was set to a different datum in error. The stage and gauging record before 06/08/2014 08:30 were shifted up by 0.068m to tie in with the new gauge zero and avoid a datum shift. Note this is not standard practice for datum shifts. A DGPS survey of the new ramp gauge in 2017 found the gauge zero to be 7.368m AOD, which is 0.495m higher than the zero datum of the old staff gauge at 6.873m AOD. The difference between the old and new datums is greater than the 0.068m adjustment that was applied to the data pre 06/08/2014. This creates some uncertainty on the whether the correct adjustment was used to cancel out the datum shift in 2014. It is possible the 0.068m shift was deduced by comparing plots from the period when the two stations were run in tandem and not by survey. The accuracy of the survey for the original gauge zero is also unknown at present. The uncertainty is compounded as a very large flood on 11/08/14 destroyed the old staff gauge and caused significant damage to the weir control, significantly lowering the base level of the control. The timing of this flood coinciding with the station rebuild confuses the cause of the 2014 shift (datum and/or control) and removes the ability to survey and clarify the zero figure of the old staff gauge. Work is ongoing to better understand these uncertainties.	Data complete from 05/02/2010. Some gaps in the stage record pre-2010 were infilled by regression from Scotsmill gauging station. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Area of gentle topography with complex geology of metamorphics, altered l'st and granite. Land use mostly arable and pasture with some forestry.	Some spray irrigation abstraction for frost protection in Apr-May.
9007	Forgue Burn at Inverkeithny	88.3	NJ6271546967	362715.0	846967.0	57°30'40.8386"N 2°37'26.2839"W	57.51134	-2.62397	Forgue Burn	Inverkeithny	51.0	SEPA-NW		9	1990-04-01	1995-08-31	VA			15.5	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1990-04-01	1995-08-31	0.941	0.116	1994-09-02	1994-09-02	11.19	1993-10-07	1993-10-07	0.182	0.431	0.649	1.896	2.6	0.67	1979	1886	95.301				48.7	102.8	155.5	231.2	343.3	883	873	0.1009	0.5362	0.3329	0.0251	0.0049	0.1126	0.4172	0.4479	0.0207	0.0013			1.0		0.0315		0.822	0.45	0.587	0.999	77.5	30.08	31.3	44.0	7.9	18.16	10.11	160	4	0.13	49.2	87.73	0.368	0.995	0.0458	0.0021			0.0009					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, closed in 1995.	10m wide pool with gravel control, gaining stability after ceasing to be used as an agricultural ford. Originally a daily-read post-gauge (records from 1974) converted to continuous recording Apr 1990. Station abandoned due to damage caused by floods of Sep 1995.	High velocities achieved over lb flood plain. No cableway, but u/s bridge (on bend) is of some use for gauging.		Undulating natural catchment with mainly metamorphic (slates, phyllites) geology and some igneous intrusions. Mixed farming with a little forestry.
9008	Burn of Boyne at Scotsmill	53.0	NJ60756507	360750.0	865070.0	57°40'25.5888"N 2°39'34.9229"W	57.67377	-2.6597	Burn of Boyne	Scotsmill	31.0	SEPA-NW	234303	9	1999-12-21	2011-07-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1999-12-21	2011-04-30	0.792	0.04	2006-07-25	2006-07-25	37.4	2000-04-26	2000-04-26	0.094	0.214	0.369	1.464	2.602	0.34	4149	3941	94.987				28.5	58.9	118.6	204.5	425.9	849	826	0.1746	0.4663	0.2828	0.0663	0.0099	0.1614	0.4546	0.3022	0.0776	0.0041			1.0		0.0467	0.0119	0.932	0.43	0.454	0.996	52.5	35.59	31.4	42.6	7.8	18.11	10.79	126	43	0.32	28.5	52.7	0.554	0.876	0.0677	0.001			0.0015					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural coastal catchment. Closed in 2011 due to hydrometric issues.	Velocity area station with natural control. Opened 21/12/1999 to obtain data on a fairly small coastal catchment. Good for comparison with 9003 and 9006. Station closed in July 2011 due to long-term hydrometric issues and should be treated with caution, especially at high flows.	Channel is silty, with some larger stones. Gauged by wading only, so high flows are extrapolated.	Gaps in the record are due to periods of logger failure at the station.	Complicated geology, mostly quartzite, psammite and pelite. Overlain with till and a little glacial material. Mixture of arable and pasture.
9009	Idoch Water at Turriff	95.0	NJ7247149379	372471.0	849379.0	57°32'01.3536"N 2°27'41.0899"W	57.53371	-2.46141	Idoch Water	Turriff	34.1	SEPA-NW	234329	9	1993-01-01	2011-07-31	VA			13.0	true	false	false	false	false	false	false	false	false	false	false	false	false		1993-11-01	2011-07-21	1.72	0.314	1995-08-21	1995-08-21	66.12	2002-11-21	2002-11-21	0.44	0.785	1.181	3.082	4.304	0.64	6472	5955	92.012				32.1	69.0	115.9	163.2	225.8	908	833	0.0966	0.5171	0.3249	0.0521	0.0088	0.0873	0.4666	0.3792	0.0618	0.0045		0.7586	0.2414		0.0926	0.0504	0.8154	0.41	0.641	0.989	61.8	30.05	34.2	44.9	8.2	22.67	10.57	116	229	0.08	32.1	97.72	0.392	0.801	0.042	0.0022			0.002					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a lowland catchment. Closed in 2011.	Velocity area station. Station closed during 2011.	Control formed by gravel bank - can move in major floods but stable between.	Post gauge records exist from March 1974 to June 1993, but these are not held on the NRFA. Continuous recording from June 1993. Only one logger at this site so some gaps present e.g. spring 2009, due to equipment failure.	Lowland catchment. Mixed permeability, mostly conglomerates and sandstone overlain by glacial / fluvial deposits. Predominantly arable with some grassland, and forest. Potable abstraction from groundwater.
9010	Deveron at Huntly	225.49	NJ5164140809	351641.0	840809.0	57°27'17.9487"N 2°48'27.2170"W	57.45499	-2.80756	Deveron	Huntly	117.5	SEPA-NW	369548	9	2009-03-28		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		2009-03-28	2023-09-30	4.965	0.833	2018-09-01	2018-09-01	119.1	2022-11-18	2022-11-18	1.166	2.001	2.843	9.908	15.54	0.45	5300	5300	100.0	2009-10-01		110.428	118.0	225.3	379.2	548.7	754.2	1132	1036	0.202	0.0374	0.263	0.4918	0.0015	0.1483	0.033	0.2856	0.5325	0.0004		0.0266	0.9734			0.1578	0.5764	0.55	0.435	0.997	127.1	42.57	37.6	52.9	8.8	45.42	26.63	384	45	0.15	118.0	225.49	0.402	0.773	0.0298	0.0002			0.0001					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural, rural catchment.	20m open channel with full cableway. Gravel boulder and rock control. Station added to peak flows dataset in September 2019 (WINFAP Files v8).	One peak flow rating across period of record, gauged to just over 3m, with a measured flow of 135 cumecs. Flows are based on simple extrapolation beyond the highest gauging.		Significant arable and pasture agriculture in lower reaches with rough grazing, moorland and peat bog in the upper catchment.	Natural catchment with no significant storage.
10001	Ythan at Ardlethen	448.1	NJ9243630912	392436.0	830912.0	57°22'06.9871"N 2°07'38.6539"W	57.36861	-2.1274	Ythan	Ardlethen	7.5	SEPA-NE		10	1965-01-01	1983-12-31	VA			11.3	true	true	true	true	false	false	false	false	false	false	false	false	false		1965-10-01	1982-12-31	6.751	0.87	1976-08-26	1976-08-28	57.13	1978-02-23	1978-02-23	1.588	3.361	4.953	13.59	17.77	0.72	6301	6301	100.0	1939-06-05	1985-01-17	50.18	6.9	58.2	109.5	164.3	380.4	861	830	0.0734	0.5579	0.3357	0.0205	0.012	0.06	0.505	0.4192	0.0117	0.0035		0.0755	0.9245		0.0373	0.0018	0.9224	0.42	0.614	0.992	57.2	28.31	33.7	44.3	8.3	52.19	24.38	111	115	0.14	6.9	457.12	0.388	0.907	0.0432	0.0007			0.0013					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station closed in 1982 and replaced by 10003 (Ellon).	Velocity area station, about 17m wide. Station closed in Dec 1982 and replaced by 10003 (Ellon), 2.5km d/s. Station demolished in 1985.	Gravel bar is low flow control, road bridge is partial high flow control. Affected by weed growth which produced a variable rating in summer. Channel was cleaned periodically and flood banks have been built. Rating derived from current meter gaugings up to 2.3m (1.3 QMED), simple extrapolation beyond. A single peak flow rating is used for the entire period of record (from Dundee POT).	Chart records from 1939 although no flows processed until 1965.	Gently undulating, relatively low-lying, developed on impermeable metamorphic Lower Dalradian formations overlain with Boulder Clay and morainic drift. Intrusion of Old Red Sandstone in north west. Largely agricultural with some forest cover. No significant catchment changes known.	Agricultural drainage/abstraction influence low flows.
10002	Ugie at Inverugie	325.0	NK1011348516	410113.0	848516.0	57°31'36.0881"N 1°49'58.0524"W	57.52669	-1.83279	Ugie	Inverugie	8.5	SEPA-NE	234249	10	1971-01-01		VA	100.0		6.0	true	true	true	true	false	false	false	true	false	true	true	false	true	N	1971-02-01	2023-09-30	4.927	0.742	1976-08-26	1976-08-27	131.0	2016-01-08	2016-01-08	1.223	2.352	3.466	9.598	13.23	0.64	19235	19235	100.0	1971-02-01		47.547	9.5	38.6	84.1	140.1	233.7	876	812	0.1135	0.4389	0.3459	0.0849	0.0156	0.0791	0.3681	0.4704	0.0705	0.0106		0.0244	0.9756		0.053	0.0969	0.8442	0.4	0.522	0.984	42.3	33.0	34.0	44.6	8.2	41.29	23.62	87	87	0.17	9.5	325.72	0.613	0.797	0.0751	0.0029			0.0036			1970		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with natural regime in north east Scotland.	Velocity area station; section about 30m wide.	A downstream weir is the main control feature. This was rebuilt in September 1996. Previously the weir was broken, unstable and insensitive. The control was badly affected be severe weed growth that is reflected in the high number of rating changes required for low to medium flows. The impact of weed growth on the flow calibration has been reduced since the weir was rebuilt. There are two distinct flood segments for before and after the weir rebuild, QHigh1971 and QHigh1996, which have been applied to all the ratings through the record (multiple lower limbs are not shown for plot clarity). Hence, two peak flow ratings across period of record. A cableway allows flood gaugings and rating QHigh1971 is calibrated using gaugings up to 1.988m, with a measured flow of 103.1 cumecs. QHigh1996 is calibrated using gauging up to 2.125m , with a measured flow of 103.9 cumecs. Flows beyond the highest gauging are based on simple extrapolation. Some bypassing occurs at highest flows, but the flood plain flow aspect is deemed insignificant. Charts were digitised from 29/01/1971 to extend the 15minute digital record back from 17/11/1988 to 29/01/1971. Quality control has been applied to the peaks to allow a revision of peak flows in this period. A further exercise is required to QC the full stage range and to review the rating in the low to mid flow range before revising the daily flow figure pre 17/11/1988. For WY1991, the AMAX figure was imported in the agent to override WISKI that otherwise selects the rising limb on 30/09/1992 09:00 and which peaks in WY1992. The first four months of WY1970 predate the start of the station operation. A comparison was carried out with data from other stations to assess if the available data contains the AMAX for WY1970. However, there was nothing conclusive from this assessment so the AMAX record starts from WY1971. The previous POT threshold of 18.334 cumecs was generating a much larger number of events than the required 5 on average per water year. Hence the threshold was increased to 22 cumecs in 2023 (v13).	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Granites and older basic intrusives surrounded by Dalradian metamorphics. Almost full superficial deposits cover. A little moorland, but mostly lowland in character with arable agriculture and relatively high population density; some forestry. Notable floodplains. No significant catchment changes known.	Natural regime. Though very minor export from headwater reservoir.
10003	Ythan at Ellon	523.0	NJ9468430370	394684.0	830370.0	57°21'49.5766"N 2°05'24.0624"W	57.36377	-2.09002	Ythan	Ellon	3.8	SEPA-NE	234210	10	1983-01-01		VA	80.0		7.1	true	true	true	true	false	true	false	true	false	false	true	true	false	N	1983-05-18	2023-09-30	8.134	0.904	1984-08-30	1984-08-30	137.1	2016-01-07	2016-01-07	1.979	4.087	6.017	15.96	20.73	0.73	14746	14746	100.0	1983-05-19		59.971	3.5	54.1	106.1	160.8	380.4	857	826	0.0688	0.5768	0.3216	0.0193	0.013	0.057	0.5141	0.4127	0.0102	0.0054		0.0648	0.9352		0.0322	0.0025	0.9294	0.42	0.62	0.993	55.1	27.83	33.6	44.3	8.3	55.13	24.96	108	104	0.14	3.6	532.29	0.406	0.878	0.047	0.0016			0.0024			1982		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in largely agricultural catchment. Replacement for station 10001 - Ythan at Ardlethen.	Velocity area station with natural control; about 18m wide. Replacement for 10001 (2.5km u/s, 1965-1983, chart records back to 1939).	Multiple peak flow rating across period of record however higher flood estimates are based on two ratings, QHigh1983 and QHigh1994, applied as upper segments to regular low to medium flow ratings. QHigh1983 is based on gaugings up to 2.980m (measured flow of 90.7 cumecs) and then simple extrapolation. QHigh1994 is based on gaugings up to 2.954m (measured flow of 85.4 cumecs) and then further informed by hydraulic modelling, providing some confidence in the flow estimate of higher events. The cause of the shift of the flood control between QHigh1983 an QHigh1994 is currently not understood and based on gauging evidence alone. Small amounts of bypassing occur on left bank during extreme flows.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Gently undulating, relatively low lying catchment. Impermeable metamorphic Lower Dalradian formations overlain with Boulder Clay and morainic drift. Intrusion of ORS in the NW. Largely agricultural with some forest cover. No significant catchment changes known.	Likely influence of agricultural drainage/abstraction on low flows. Superficial deposits dampen the responsiveness of the catchment.
11001	Don at Parkhill	1273.0	NJ88771419	388770.0	814190.0	57°13'05.9572"N 2°11'15.3113"W	57.21832	-2.18759	Don	Parkhill	32.4	SEPA-NE	234292	11	1969-01-01		VA	300.0		6.8	true	true	true	true	false	false	false	true	true	true	true	false	true	N	1969-12-01	2023-09-30	21.124	3.553	1989-12-15	1989-12-15	334.2	2022-11-18	2022-11-18	5.665	10.79	15.66	40.72	52.9	0.68	19662	19662	100.0	1969-12-01		136.246	34.7	89.6	220.4	509.0	873.9	964	884	0.1589	0.2958	0.2888	0.2403	0.0119	0.1873	0.2401	0.3361	0.2244	0.0106	0.0027	0.017	0.9803		0.043	0.0326	0.7825	0.52	0.584	0.996	111.4	31.28	34.4	47.2	8.3	127.17	59.74	262	96	0.1	34.8	1269.14	0.673	0.775	0.0587	0.0028			0.0041					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; the lowest station on the Don.	Velocity area station, about 37m wide section. Lowest gauging station on the Don.	Cableway rated with natural control. Weed growth a problem during summer half-year. Complex low flow rating history. Peak flow rating derived from current meter gaugings up to 3.7m (2.2QMED) and simple extrapolation beyond. One peak flow rating applied to the whole record.	Flow records for 1969-86 reprocessed in 1987; significant revisions in high and low flow range.	Mountainous headwaters, mainly snowy in winter. Mainly Dalradian metamorphics with large amounts of basic intrusives and small pockets of Old Red Sandstone. Responsiveness dampened by superficial deposits. High moorland, forestry, pastoral and arable in lower valleys. Notable floodplains, mainly in the lower reaches. No major catchment changes, but increased urbanisation in Inverurie.	Natural regime.
11002	Don at Haughton	787.0	NJ7567720150	375677.0	820150.0	57°16'16.8483"N 2°24'17.8702"W	57.27135	-2.40496	Don	Haughton	55.0	SEPA-NE	234235	11	1969-01-01		VA	250.0		4.7	true	true	true	true	false	true	false	true	false	true	false	true	true	N	1969-07-01	2023-09-30	14.415	2.43	1989-12-15	1989-12-15	298.6	2022-11-18	2022-11-18	4.124	7.448	10.57	27.4	36.47	0.67	19815	19815	100.0	1971-02-19		110.331	58.3	126.1	313.2	564.9	873.9	1025	916	0.1894	0.1856	0.2576	0.3569	0.0045	0.2258	0.1441	0.2832	0.3416	0.0042		0.0272	0.9728		0.0381	0.0471	0.714	0.55	0.573	0.997	137.8	32.44	34.9	47.6	8.4	102.59	51.29	332	82	0.11	58.3	792.67	0.62	0.753	0.0507	0.001			0.0016					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, catchment drains the eastern Cairngorms.	Velocity area station; about 40m wide.	Cableway rated, natural control. Levels can be affected by ice and weed. Minor bypassing only at the highest flood flows >5.0m (2002 and 2016). Peak flow rating revised in 2020 and derived from gaugings up to 4.8m and flood plain modelling up to 6.0m. However, there is lower confidence in flow estimates pre 01/01/1984 as there is a ten year period with no gaugings. Two peak flow ratings across period of record.	All pre-1984 flows are flagged as estimated in the SEPA database and post-1984 flows for events above 5m stage should be treated with caution. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10) and in August 2024 (WINFAP Files v13).	Mountainous headwaters, often snowy in winter. Mainly Dalradian metamorphics with large amounts of basic intrusives and a small pocket of ORS. High moorland, forestry, pastoral and arable in lower valleys. No significant catchment changes known.	Natural regime. Slow rising river, responsiveness dampened by superficial deposits.
11003	Don at Bridge of Alford	499.0	NJ5681817072	356818.0	817072.0	57°14'32.2906"N 2°43'01.6430"W	57.2423	-2.71712	Don	Bridge of Alford	133.2	SEPA-NE	234170	11	1973-01-01		VA	240.0		6.0	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1973-05-01	2023-09-30	10.111	2.179	1976-08-26	1976-08-26	232.5	2022-11-18	2022-11-18	3.158	5.545	7.671	18.3	24.92	0.68	18415	18415	100.0	1973-04-23		95.81	135.5	230.9	394.8	605.6	873.9	1080	967	0.1569	0.1069	0.2474	0.4798	0.0011	0.1853	0.0692	0.2661	0.4777	0.0011		0.0422	0.9578		0.0153	0.0711	0.6408	0.56	0.565	0.996	161.0	33.59	35.7	49.2	8.6	69.02	33.5	408	75	0.11	135.5	509.94	0.481	0.81	0.0363	0.0004			0.0003			1972		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, one of four stations on the River Don. Culfork is the most upstream, then Alford, with Haughton and Parkhill further downstream.	Velocity area station, one of four stations on the River Don. Culfork is the most upstream, then Alford, with Haughton and Parkhill further downstream.	Cableway rated. Stable natural control with slight changes to lower sections of ratings every couple of years since flows began in 1973. Rating derived from current meter and ADCP gaugings from cableway up to 2.7m. Peak flow rating extrapolated up to 5.0m using multiple cross sections and 1D and 2D modelling. A single peak flow rating is applied to the entire record.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Upland catchment. Mountainous headwaters, often snowy in winter. Mainly Dalradian metamorphics, some older basic intrusives and a small pocket of ORS. High moorland, forestry, hill grazing and some arable in the valley bottom. No significant catchment changes known.	Natural regime. Responsiveness dampened by superficial deposits.
11004	Urie at Pitcaple	198.0	NJ7210425981	372104.0	825981.0	57°19'24.6676"N 2°27'53.5304"W	57.32352	-2.46487	Urie	Pitcaple	67.4	SEPA-NE	234293	11	1984-01-01		VA	30.0		12.2	true	false	false	false	false	false	true	true	false	false	true	false	false	N	1984-03-10	2023-09-30	3.263	0.608	1984-08-30	1984-08-30	54.93	2016-01-07	2016-01-07	0.884	1.768	2.479	6.056	7.819	0.75	14449	14037	97.149				68.3	120.7	196.2	315.2	523.7	882	870	0.133	0.4272	0.3514	0.0788	0.0094	0.1568	0.3566	0.4258	0.0557	0.0048			1.0			0.0037	0.9135	0.53	0.562	0.996	88.4	31.7	33.5	45.5	8.1	26.49	15.36	206	92	0.16	68.4	195.44	0.411	0.896	0.0458	0.0028			0.0026					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station replace 11801.	Velocity area station about 16m wide. Station replaced 11801. Removed from Peak Flow Dataset in August 2021 (WINFAP Files v10).	Natural control and cableway rated. All flows contained. Good low flow performance. Some bypassing occurs at high flows (water shortcuts the meander immediately upstream and joins the river d/s of gauging station). Rating derived from current meter gaugings up to 1.8m, extended up to 3.25m on survey/model points and extrapolated from 3.4m. Gaugings pre-1988 are referenced to different datum - not used for current rating. Data removed from peak flows dataset due to uncertainty of whole record.	1984 minimum flow c0.6 cumecs. Pre-1988 flows calculated from staff gauge readings (high flows truncated at a gauge reading of 1m) - intermittent.	Bedrock predominantly metamorphic. Moorland headwaters, substantial areas of mixed and arable farming below; forestry. Minimal floodplains. No significant catchment changes known.	Natural regime, no abstractions. Responsiveness dampened by superficial deposits.
11005	Don at Mill of Newe	187.0	NJ3702712058	337027.0	812058.0	57°11'41.8939"N 3°02'37.3752"W	57.19497	-3.04372	Don	Mill of Newe	267.0	SEPA-NE		11	1989-01-11	1994-06-09	MIS			13.9	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1989-01-11	1994-06-08	4.004	0.57	1989-12-15	1989-12-15	38.61	1994-03-07	1994-03-07	1.356	2.265	3.019	7.353	9.879	0.67	1975	1975	100.0				266.4	365.5	514.4	674.8	827.4	1167	1062	0.1482	0.0018	0.1488	0.6936		0.1319	0.0026	0.119	0.746	0.0002			1.0		0.005	0.1528	0.3697	0.63	0.46	0.996	190.6	41.83	36.8	51.3	8.8	35.13	17.36	517	80	0.1	266.7	188.28	0.388	0.743	0.0286	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a rural catchment. Closed in 1994.	Velocity-area station with complex weir of unorthodox design. Principally a low flow station. Closed on 9/6/94.	No cableway and no suitable locations for high flow gaugings. Structure retains control in all conditions. Small flow towards disused HEP plant bypasses weir. Weir traps in central fish pass frequently adjusted, often resulting in need to recalibrate.		Complex metamorphic geology; dissected plateau with peaks to 600-700m and steep slopes. Granite in S. Some forestry on lower ground; remainder rough grazing.
11006	Don at Culfork	103.4	NJ3298510480	332985.0	810480.0	57°10'48.8073"N 3°06'36.5875"W	57.18022	-3.11016	Don	Culfork	301.0	SEPA-NE	234191	11	1997-01-01		VA			10.0	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1997-07-18	2023-09-30	2.691	0.666	2018-09-01	2018-09-01	61.51	2002-10-22	2002-10-22	0.887	1.422	1.89	4.676	6.769	0.6	9571	8369	87.441				307.3	400.9	531.9	680.7	827.4	1155	1065	0.1015		0.1291	0.7655		0.087		0.1068	0.8057	0.0001			1.0			0.1388	0.4153	0.63	0.435	0.997	183.3	43.87	36.7	51.0	8.9	27.29	14.99	536	42	0.1	307.3	103.32	0.375	0.786	0.0278	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural upland catchment.	Velocity area station.	No cableway. High flows gauged from bridge on river bend immediately u/s.	Low flows in winter months can be caused by persistent low temperatures, e.g. Feb 2009.	Upland catchment (mostly 600-800 m) dissected by fast-flowing tributaries. Little or no floodplain in main river valley. Complex metamorphic geology (impermeable bedrock with some superficial deposits). Land use is mostly heath with some forestry.	Natural flows.
12001	Dee at Woodend	1370.0	NO6348295613	363482.0	795613.0	57°03'00.4647"N 2°36'12.8418"W	57.05013	-2.60357	Dee	Woodend	70.5	SEPA-NE	234333	12	1929-01-01		VA	1000.0		5.1	true	true	true	true	false	true	true	true	true	true	true	true	true	N	1929-10-01	2023-09-30	37.249	3.536	1976-08-27	1976-08-27	860.8	2015-12-30	2015-12-30	8.287	18.4	26.4	74.26	102.2	0.53	34333	34333	100.0	1929-10-01		436.809	71.3	193.0	509.2	817.9	1308.9	1193	1108	0.1307	0.0354	0.1207	0.701	0.0035	0.132	0.0241	0.1148	0.7197	0.0029			0.9413	0.0587	0.0414	0.1002	0.5018	0.62	0.506	0.976	185.7	40.27	38.0	53.3	8.5	107.57	60.44	512	93	0.07	71.3	1380.06	0.7	0.823	0.0468	0.0005			0.001					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station providing the longest record of flow on the Dee. Series encompasses early data from Cairnton.	Velocity area station; about 60m wide section. Flow records for Woodend are an amalgamation from two different stations. Present station (built in 1972) replaced earlier station (Cairnton, located approx. 1 mile d/s from Woodend at an abstraction point - some daily staff readings from 1911, continuous flow records from 1929, chart records from 1934) on same reach. C/m measurements at Woodend initiated by Capt. McClean. Cairnton continued operating until the end of 1984.	Cableway rated, fairly stable natural control. Winter low flows can also be elevated by ice. From 1929, rating for Cairnton derived by correlation with current meter measurements at Woodend. From 1934 Woodend used for calculating flows at Cairnton, both stations fitted with chart recorders. From 1972, rating at Woodend derived from current meter gaugings up to 3.0m (about QMED), simple extrapolation beyond.	Major floods in 1937 and 1951. Occasional isolated low flow in winter months e.g. Jan 1960, thought to be due to frozen catchment. Winter low flows can also be elevated by ice, in some cases flows have been reprocessed to correct for this, e.g. Dec 2009.	Mountainous headwaters, often snowy in winter. Dalradian and Moinian metamorphics along most of valley, flanked by igneous intrusives. Responsiveness slightly dampened by superficial deposits. Mountain, moorland; forestry, with pastoral and some arable in valley bottom. No significant catchment changes known.	Natural regime. No regulation, little natural storage (but significant snow in headwaters), minor abstractions.
12002	Dee at Park	1844.0	NO7973998317	379739.0	798317.0	57°04'31.5264"N 2°20'08.9705"W	57.07542	-2.33583	Dee	Park	22.6	SEPA-NE	234291	12	1973-01-01		VA	1100.0		5.5	true	true	true	true	false	false	false	true	false	true	true	false	true	PN	1972-11-01	2023-09-30	47.214	3.664	1976-08-27	1976-08-27	866.2	2022-11-18	2022-11-18	8.913	22.21	33.57	95.09	130.4	0.52	18596	18596	100.0	1972-10-10		556.402	23.8	138.9	435.1	768.1	1308.9	1162	1080	0.162	0.0575	0.1381	0.63	0.0052	0.1696	0.0417	0.1419	0.6359	0.0051			0.9503	0.0497	0.0491	0.1164	0.5592	0.58	0.507	0.98	169.4	39.69	38.5	53.6	8.5	127.69	66.91	447	82	0.07	24.0	1833.21	0.688	0.838	0.0483	0.0008			0.0016					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the most downstream on the Dee.	Velocity area station; section about 50m wide.	Cableway rated, unstable natural control causing frequent changes in low and medium flow ratings. Rating derived from current meter gaugings up to 4m (1.15QMED), simple extrapolation beyond. New peak flow rating produced in 1999 and applied to the entire record.		Mountainous headwaters, often snowy in winter. Dalradian and Moinian metamorphics along most of valley, flanked by igneous intrusives. Mountain, moorland, forestry landuse with, pastoral and some arable in valley bottom. No significant catchment changes known.	Responsiveness slightly dampened by superficial deposits. Abstraction for PWS of approximately 0.7 cumec between Woodend (12001) and Park (accounts for almost 10% of Q95 flow).
12003	Dee at Polhollick	690.0	NO3439596531	334395.0	796531.0	57°03'18.5266"N 3°04'59.4506"W	57.05515	-3.08318	Dee	Polhollick	216.7	SEPA-NE	234294	12	1975-01-01		VA	600.0		7.3	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1975-07-01	2023-09-30	23.352	1.947	2023-06-17	2023-06-17	369.6	2015-12-30	2015-12-30	4.778	10.75	16.0	47.88	67.96	0.48	17624	17624	100.0	1975-06-18		303.294	219.6	376.8	604.7	892.6	1308.9	1341	1231	0.0789	0.0009	0.0689	0.8429	0.0004	0.0752	0.0006	0.0536	0.8667	0.0007			0.9484	0.0516	0.0302	0.1153	0.4034	0.68	0.459	0.986	219.5	44.94	39.0	55.0	8.7	62.98	37.16	621	95	0.04	219.6	697.5	0.619	0.862	0.0379	0.0001			0.0001			1975		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the middle reaches of the Dee.	Velocity area station, about 52m wide section.	Cableway rated with natural control. Winter river levels may increase due to ice formation, and this can result in erroneous flows. Where possible, estimated daily mean flows have been substituted. Ratings derived from current meter gaugings up to 2.3m with simple extrapolation beyond. Three peak flow ratings across period of record.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12) and in August 2024 (WINFAP Files v13).	Upland catchment with mountainous headwaters, snowy in winter. Bedrock Dalradian and Moinian metamorphics with basic intrusions. Mountain, moorland, pasture, and forestry landuse. No significant catchment changes known.	Natural flow regime.
12004	Girnock Burn at Littlemill	30.3	NO3224895485	332248.0	795485.0	57°02'43.5864"N 3°07'05.8285"W	57.04544	-3.11829	Girnock Burn	Littlemill	245.4	SEPA-NE	234265	12	1969-07-01	2012-01	VA	40.0		42.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1969-07-01	2011-12-31	0.529	0.005	1992-06-22	1992-06-24	28.17	1995-09-09	1995-09-09	0.044	0.155	0.28	1.126	1.795	0.38	15524	15457	99.568				246.1	314.3	405.6	513.6	855.3	1099	935	0.076	0.0011	0.074	0.8464		0.0546	0.0002	0.0299	0.9141	0.0012			1.0			0.0923	0.6158	0.68	0.464	1.0	161.6	40.6	33.5	46.0	8.1	11.46	6.26	411	27	0.19	246.6	29.56	0.371	0.843	0.031	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural upland catchment. Station closed in 2011.	Velocity area station. Transferred to NERPB in July 1994. No records of earlier ratings or gaugings. Important catchment for fishery research. Station closed during 2011.	Rated by wading.	Magnitude of Sept 1995 flood under review. Winter low flows can be elevated by ice, in some cases flows have been reprocessed to correct for this, e.g. Dec 2009.	Upland catchment. Bedrock Dalradian and older basic intrusive rocks mostly overlain by superficial deposits. Landuse moorland and pastoral with some forestry.	Natural flow regime.
12005	Muick at Invermuick	110.0	NO3642394759	336423.0	794759.0	57°02'22.2555"N 3°02'57.4981"W	57.03952	-3.04931	Muick	Invermuick	200.7	SEPA-NE	234247	12	1976-01-01		VA	60.0		11.0	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1976-10-01	2023-09-30	3.809	0.293	1977-12-03	1977-12-03	88.33	2022-11-18	2022-11-18	0.656	1.69	2.506	7.796	11.15	0.48	17166	17166	100.0	1976-07-22		72.113	200.2	364.5	616.8	857.6	1149.0	1354	1244	0.086	0.0041	0.0775	0.8086	0.0003	0.0682	0.0004	0.0479	0.8611	0.0018			1.0			0.2189	0.3804	0.68	0.512	0.896	188.6	43.0	43.8	59.6	9.0	28.24	14.57	592	12	0.15	200.8	109.39	0.403	0.762	0.0293	0.0001			0.0001			1976		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station draining the south west Cairngorms and flowing into the Dee just downstream of 12003.	Velocity area station, about 20m wide.	Cableway rated, natural control. Problems with silting in well (until 1980) and ice in cold winters (flows may be estimated). Rating derived from current meter gaugings up to 1.7m (measured at 72 cumecs) with simple extrapolation beyond. One peak flow rating applied to entire record. There is a side channel just downstream of gauging station that can periodically be blocked by members of the public to deepen the pool and then it inevitably gets knocked down by the fisheries board. This can necessitate rating adjustments at the lower end. The station is on the River Muick just before it joins the River Dee at Ballater. There is potential backing up from either a downstream bridge or from the River Dee itself during extreme events. The current high flow rating does not account for this. With future investigation, there may be potential to further refine flood estimates.	Flows in 1976 invalid due to blocked pipe. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Upland catchment with mountainous headwaters, often snowy in winter. Bedrock Dalradian intrusive basics with more than half overlain by superficial deposits. Landuse pastoral and mountain moorland; some forestry and lochs. Forestry operations developed in the catchment.	Flow regime influenced by upstream Lochs. Natural with no abstrations up until around March 2020 when a hydro scheme was installed upstream of the station. However, all water is returned upstream of the station and no water is diverted from the catchment.
12006	Gairn at Invergairn	150.0	NO3523197050	335231.0	797050.0	57°03'35.7341"N 3°04'10.3275"W	57.05993	-3.06954	Gairn	Invergairn	217.7	SEPA-NE	234243	12	1978-01-01		VA	60.0		8.9	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1978-11-01	2023-09-30	3.795	0.236	2023-07-02	2023-07-02	78.16	2022-11-18	2022-11-18	0.828	1.858	2.704	7.332	10.28	0.54	16405	16405	100.0	1978-10-12		59.871	221.5	387.7	531.5	755.7	1160.4	1036	1048	0.0207	0.0014	0.1175	0.8549	0.0001	0.018	0.0001	0.1055	0.8759	0.0003			1.0			0.1207	0.404	0.64	0.452	0.997	180.0	42.66	35.9	50.1	8.4	33.94	16.56	557	132	0.16	221.5	145.91	0.395	0.878	0.0294	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging catchment with natural regime, although flows can be affected by frozen catchment.	Velocity area station with cableway; about 15m wide section.	Natural control includes rubble from early gabion construction (broken up by spate of Nov 1978). Frozen catchment can produce notable low flows (e.g. 22/01/1985). Two peak flow ratings applied to entire record, derived from current meter gaugings. Peak flow rating 1 gaugings up to 1.3m (0.6QMED); peak flow rating 2 gaugings up to 1.4m (about 0.8 QMED); simple extrapolation beyond.		Upland catchment with mountainous headwaters often snowy in winter. Some Dalradian metamorphics, mainly granite intrusive. Half of catchment overlain by superficial deposits. Landuse pastoral and mountain moorland; some forestry. No significant catchment changes known. Catchment rainfall may be underestimated.	Natural regime.
12007	Dee at Mar Lodge	289.0	NO0978889522	309788.0	789522.0	56°59'16.9457"N 3°29'10.3124"W	56.98804	-3.4862	Dee	Mar Lodge	331.9	SEPA-NE	234274	12	1982-01-01		VA	250.0		9.0	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1982-09-10	2023-09-30	12.165	0.643	1994-08-22	1994-08-22	225.6	1990-02-04	1990-02-04	2.241	5.259	8.061	25.49	36.51	0.43	14996	14996	100.0	1982-09-09		183.215	334.1	478.4	649.3	942.7	1308.9	1492	1334	0.0207		0.0517	0.9215		0.0205		0.0384	0.9397	0.0007			0.9804	0.0196		0.1683	0.3138	0.69	0.4	0.989	235.2	50.1	42.0	60.5	9.1	28.82	15.26	682	116	0.09	334.3	292.0	0.502	0.832	0.0331	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the highest on the Dee.	Velocity area station, about 45m wide. Highest gauging station on the Dee.	Cableway rated, unstable natural control. Prolonged cold spells cause a considerable drop in flow and on rare occasions ice formation on the control requires estimation of flow. River well contained, no bypassing. Rating derived from current meter gaugings up to 2.3m (about QMED), simple extrapolation beyond. No out of bank surveys have been undertaken at this site by either SEPA or any external contractors. However, recent work by consultants following flooding from Storm Frank (Dec 2015) has suggested modelling should be undertaken to account of out of bank flow at this site as some water bypassed the station flowing through trees on the left-hand bank on the Mar Lodge estate. This may have an impact on subsequent high flow rating reviews but as of 30/10/17 this information is not available. One peak flow rating applied up to 14/08/14, where the channel profile changed significantly during the remnants of hurricane Bertha. The rating is being re-calibrated and no peak flow estimates are currently available post 14/08/14.	December 1989 flows estimated due to ice formation. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Upland catchment with mountainous headwaters, often snowy in winter. Dalradian and Moinian metamorphic and granite mountains. Nearly half overlain by superficial deposits. Mountainous with moorland and some forestry. No significant catchment changes known. Catchment rainfall may be significantly underestimated.	Natural regime.
12008	Feugh at Heugh Head	229.0	NO6870392800	368703.0	792800.0	57°01'30.8845"N 2°31'01.7794"W	57.02525	-2.51716	Feugh	Heugh Head	69.0	SEPA-NE	234237	12	1985-01-01		VA	400.0		6.6	true	true	true	true	false	false	false	true	false	false	false	false	false	PN	1985-01-14	2023-09-30	6.014	0.426	1994-08-20	1994-08-20	220.1	2022-11-18	2022-11-18	0.922	2.181	3.397	12.23	19.18	0.45	14139	14139	100.0	1985-01-14		136.337	70.1	125.7	335.6	524.9	776.8	1185	1130	0.1426	0.0448	0.1122	0.6955	0.0045	0.1807	0.0279	0.1267	0.6622	0.0022			0.9925	0.0075	0.0535	0.2985	0.6113	0.54	0.427	0.998	146.5	44.79	44.0	59.7	8.8	30.41	16.9	330	39	0.15	70.1	232.84	0.456	0.609	0.0381	0.0			0.0002			1984		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in rugged mountainous catchment. Low flows affected by abstraction for PWS.	Velocity area station, about 20m wide.	Station has cableway and natural control. Flows may be influenced by a fishing jetty a short distance d/s from gauging station. Rating derived from current meter gaugings up to 3.4m (about QMED), simple extrapolation beyond. One peak flow rating has been applied to the entire record. A cableway allows high flow gaugings. There are large man-made stepping stones upstream of cableway that are thought to be a factor in the station control. Downstream its a natural open channel with the exception of a fishing groyne downstream of station that is influential on low flows. Rating derived from current meter gaugings up to 3.4m (about QMED), simple extrapolation beyond. One peak flow rating has been applied to the entire record.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Rugged topography. Mountainous headwaters, often snowy in winter. Developed largely on granites and metamorphics with almost complete superficial deposit cover. Mostly moorland and upland pasture. Some forest cover due to afforestation in Glen Dye.	Flashy response. Abstraction (at Charr, PWS for Stonehaven) accounts for <5% of Q95 flow. Off-line storage reservoir installed in early 1990s with connection back to the river, which might have an influence on flows.
12009	Water of Dye at Charr	41.7	NO6241183457	362411.0	783457.0	56°56'27.0566"N 2°37'09.8484"W	56.94085	-2.6194	Water of Dye	Charr	239.0	SEPA-NE	234183	12	1990-01-01		FL	30.0		8.2	true	false	false	false	false	false	false	true	false	false	false	false	false	P	1957-05-04	2021-04-01	1.286	0.094	1994-08-20	1994-08-20	32.87	2020-10-03	2020-10-03	0.2	0.421	0.63	2.821	4.582	0.37	23344	18146	77.733				235.0	321.2	417.9	529.2	774.6	1264	1278	0.0002		0.0428	0.9562	0.0003	0.0046	0.0008	0.0643	0.9298	0.0005			1.0			0.6253	0.3404	0.54	0.284	1.0	144.6	55.63	46.6	61.6	8.8	11.17	5.77	420	110	0.14	235.7	42.03	0.158	0.725	0.0118	0.0			0.0					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound critical depth flume gauging a responsive, upland catchment with a largely natural regime.	Compound critical-depth flume (constructed by Grampian Regional Council, repaired in 1983).	Large capacity flume, flows >30 cumecs estimated or truncated. July 2008, modifications for fisheries carried out - centre of flume narrowed, hence low flow relationship altered significantly.	Mixed flow series comprising lengthy runs of naturalised and gauged flows. Incomplete chart records from 1963. Peak flows from Aug 1990 only.	Rugged upland catchment with moorland (exclusively), developed principally on granite; overlain by superficial deposits.	Very responsive regime - natural apart from PWS abstraction (for Stonehaven), an export of approx. 0.05 cumecs (around 5% of mean runoff), significant at low flows.
13001	Bervie at Inverbervie	123.0	NO8264873370	382648.0	773370.0	56°51'05.1860"N 2°17'10.0301"W	56.85144	-2.28612	Bervie	Inverbervie	70.0	SEPA-NE	234241	13	1979-01-01		VA	50.0		15.1	true	true	false	true	false	true	false	true	false	true	false	true	true	N	1979-09-01	2023-09-30	2.218	0.242	1983-08-31	1983-08-31	115.5	2022-11-18	2022-11-18	0.384	0.867	1.345	4.577	6.711	0.55	16101	16101	100.0	1979-08-16		35.577	7.0	67.4	123.0	286.8	463.4	929	890	0.1521	0.546	0.2157	0.0662	0.0194	0.1437	0.4393	0.3312	0.0702	0.0152		0.6997	0.3003		0.1274	0.0482	0.8202	0.45	0.554	0.998	85.3	40.16	40.7	51.7	8.7	33.35	17.93	149	146	0.14	7.2	124.47	0.541	0.822	0.0594	0.0022			0.0017					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the low-lying north east coast of Scotland.	Velocity area station, about 10m wide.	Cableway rated. De-stabilised artificial control replaced by gabions in 1989. Extreme floods above about 2m bypass the station (via the rb floodplain; water spills onto the road and collects in a depression, probably just evaporates and infiltrates). Rating derived from current meter gaugings up to 1.8m (1.1 QMED), simple extrapolation beyond. Two peak flow ratings have been applied to the record.		Low-lying catchment. Bedrock of mixed permeability with ORS; almost entirely covered with superficial deposits. Arable landuse in valley, pastoral on hills and some forestry. No significant catchment changes known.	Natural flow regime.
13002	Luther Water at Luther Bridge	138.0	NO6589367045	365893.0	767045.0	56°47'37.2868"N 2°33'35.8927"W	56.79369	-2.55997	Luther Water	Luther Bridge	24.5	SEPA-NE	14928	13	1982-01-01		VA			13.0	true	false	false	false	false	false	false	true	false	true	false	false	true	N	1982-01-01	2023-09-30	2.382	0.267	1982-08-04	1982-08-08	55.37	2022-11-18	2022-11-18	0.429	1.01	1.529	4.855	6.993	0.57	15248	14883	97.606				24.5	51.7	107.5	330.0	519.9	917	906	0.1558	0.4977	0.1724	0.158	0.0142	0.1701	0.4552	0.2246	0.1247	0.0233		0.7879	0.2121		0.058	0.0528	0.818	0.54	0.551	0.992	95.9	40.15	38.5	48.9	8.2	23.87	13.26	153	169	0.23	24.5	137.58	0.663	0.734	0.0895	0.0049			0.0039					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a steep rural catchment.	Velocity area station 10m wide. Stable bedrock control at low flows.	Cableway present. Situation not ideal due to bend u/s and island d/s, but stage-discharge relation is regularly reviewed using routine gaugings.		Upper third of catchment is fairly steep (Grampian Mountains), the rest has moderate slopes. Majority of the catchment is on ORS, the remainder is metamorphic. Almost the entire catchment is covered by superficial deposits. Land use is forest (approx. half) and rough grazing at higher levels with arable and cattle elsewhere.
13003	South Esk at Stannochy Bridge	487.0	NO5836459176	358364.0	759176.0	56°43'20.6036"N 2°40'54.9579"W	56.72239	-2.68193	South Esk	Stannochy Bridge	29.0	SEPA-NE		13	1977-01-01	1982-12-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1979-01-01	1982-12-31	13.308	1.341	1981-09-09	1981-09-09	214.8	1982-10-13	1982-10-13	2.253	5.928	9.872	26.71	36.37	0.53	1461	1461	100.0				24.3	76.9	310.0	713.2	1006.2	1133	1093	0.1013	0.2101	0.2431	0.4408	0.003	0.1049	0.203	0.2748	0.4125	0.004		0.3189	0.6811		0.0937	0.0486	0.5333	0.46	0.539	0.992	164.7	39.79	46.0	60.5	8.7	69.96	35.76	345	152	0.19	24.3	483.42	0.71	0.706	0.0588	0.0004			0.0007					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain
13004	Prosen Water at Prosen Bridge	104.0	NO3957458549	339574.0	758549.0	56°42'52.9191"N 2°59'19.5490"W	56.7147	-2.98876	Prosen Water	Prosen Bridge	109.3	SEPA-NE	14915	13	1984-01-01		VA			13.1	true	false	false	false	false	false	true	true	false	false	false	false	false	N	1985-01-01	2023-09-30	3.326	0.426	1995-08-18	1995-08-18	65.63	2016-01-03	2016-01-03	0.694	1.461	2.188	6.794	9.746	0.54	14152	14152	100.0				108.4	247.1	413.3	648.0	946.1	1238	1183	0.1498	0.0232	0.1884	0.638		0.1486	0.0173	0.2451	0.5883	0.0007		0.0052	0.9948		0.0189	0.0074	0.4685	0.66	0.471	0.998	209.7	39.36	49.5	64.6	9.0	29.46	16.65	431	151	0.22	108.6	107.53	0.367	0.715	0.024	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural, mountainous catchment.	Velocity area station 16m wide. Fairly stable rock and boulder control.	Cableway present. Gauged up to approx. 80 cumecs.	Notably low winter flows, e.g. Dec 1995, due to extreme low temperatures.	Metamorphic bedrock; approx. half overlain by superficial deposits. Mountainous with rough grazing and forest cover.	Usually has significant spring snowmelt. Natural regime.
13005	Lunan Water at Kirkton Mill	124.0	NO6546649433	365466.0	749433.0	56°38'07.6098"N 2°33'52.5026"W	56.63545	-2.56458	Lunan Water	Kirkton Mill	8.6	SEPA-NE	14923	13	1981-01-01		VA			12.9	true	false	false	false	false	false	false	true	false	false	false	false	false	I	1981-02-01	2023-09-30	1.712	0.071	1995-08-18	1995-08-18	34.43	2022-11-18	2022-11-18	0.204	0.549	0.931	3.845	5.863	0.52	15582	15582	100.0				9.9	46.2	96.7	150.5	251.0	809	772	0.0949	0.6823	0.1771	0.0174	0.0194	0.077	0.695	0.2016	0.0035	0.016		0.7047	0.2953		0.1637		0.8098	0.36	0.601	0.943	44.4	40.52	36.8	47.5	8.2	25.62	15.24	97	86	0.09	9.9	128.93	0.712	0.902	0.0985	0.0016			0.0051	0.665	1.014			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a rural catchment, some influences on flow regime due to abstraction.	Velocity area station 6m wide. Control at low and medium flows is unstable gravel bed.	Cableway present.		A moderately sloping catchment typically rising to 250m. Bedrock is divided in almost equal proportions between ORS and igneous rocks almost all of which is overlain by superficial deposits. Land use is pasture and arable with some forest cover.	Agricultural abstraction of approx. 0.16 cumecs can influence summer low flows.
13007	North Esk at Logie Mill	732.0	NO6994064029	369940.0	764029.0	56°46'00.7583"N 2°29'36.1156"W	56.76688	-2.49337	North Esk	Logie Mill	10.6	SEPA-NE	14927	13	1976-01-01		CC			10.0	true	false	false	false	false	false	false	true	true	false	true	false	false	SPI	1976-01-01	2023-09-30	19.518	2.027	1976-09-06	1976-09-07	538.3	2022-11-18	2022-11-18	3.351	7.732	12.11	39.94	59.45	0.5	17440	17440	100.0				12.5	58.5	270.0	650.0	935.7	1099	1075	0.0623	0.246	0.1798	0.5033	0.0057	0.0783	0.224	0.2277	0.4587	0.0092		0.3844	0.6156		0.0966	0.1687	0.6214	0.55	0.517	0.986	141.5	42.52	43.1	55.7	8.6	64.96	30.11	311	137	0.18	12.5	747.04	0.56	0.618	0.0565	0.0015			0.0016					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound crump weir gauging the south east Grampian Mountains.	Compound Crump profile fibreglass weir, width 41m.	Cableway - current meter calibration.	Daily flows of limited precision (based on single stage readings) from 1/76 to 4/83 derived from two nearby sites; high flows overestimated. Naturalised monthly flows available 1976-87.	Drains south-east flank of Grampians. Steeply sloping apart from lower third. Bedrock is mostly ORS, the remainder being igneous and metamorphic; most of which is overlain by superficial deposits. Rough grazing on open moorland; cattle and arable at lower levels.	Usually has significant spring snowmelt. Minor abstractions for PWS and irrigation.
13008	South Esk at Brechin	488.0	NO5996259665	359962.0	759665.0	56°43'36.9219"N 2°39'21.2416"W	56.72692	-2.6559	South Esk	Brechin	18.0	SEPA-NE	14917	13	1983-01-01		VA			9.4	true	false	false	false	false	false	false	true	false	false	true	false	false	I	1983-01-01	2023-09-30	12.901	1.212	1984-08-26	1984-08-26	259.0	2022-11-18	2022-11-18	2.38	5.654	8.722	26.67	38.06	0.53	14883	14883	100.0				19.0	74.5	305.9	710.6	1006.2	1129	1088	0.1026	0.214	0.2419	0.4355	0.0042	0.106	0.2052	0.2748	0.4073	0.0058		0.3276	0.6724		0.0971	0.048	0.5347	0.46	0.54	0.992	163.2	39.77	45.8	60.3	8.7	72.82	38.12	342	152	0.2	19.2	489.69	0.716	0.724	0.0592	0.0009			0.0014					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a long, narrow catchment. Replaces 13003.	Velocity area station 20m wide. Supersedes 13003, Stannochy Bridge (1979-82), 3km u/s.	Cableway present. High flows can cut off access to the cableway. Control washed away during December 2012 event. Flood protection scheme constructed 2015 - May 2016.		A long narrow catchment draining the SE flank of the Grampians. The upper two thirds are steeply sloping. Land use is a mix of rough grazing on open moorland, forestry and, at lower levels, arable. The lower half lies on ORS, the remainder is metamorphic; two thirds of which is overlain by superficial deposits.	Summer flows can be affected by agricultural abstractions, approx 0.16 cumecs. Usually has significant spring snowmelt.
13009	West Water at Dalhouse Bridge	127.2	NO5915268050	359152.0	768050.0	56°48'07.8278"N 2°40'13.7201"W	56.80217	-2.67048	West Water	Dalhouse Bridge	49.2	SEPA-NE	14925	13	1985-01-01		VA			12.3	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1985-01-01	2023-09-30	4.046	0.516	1995-08-21	1995-08-21	119.3	2022-11-18	2022-11-18	0.818	1.702	2.522	8.268	12.24	0.51	14152	14121	99.781				50.3	162.2	376.6	659.0	893.3	1136	1180	0.0338	0.0521	0.234	0.6796	0.0004	0.0438	0.0385	0.2713	0.6439	0.0026		0.1237	0.8763		0.0233	0.1865	0.6518	0.55	0.501	1.0	196.7	43.3	45.5	58.7	8.6	36.18	18.73	399	125	0.22	50.3	128.33	0.245	0.615	0.0174	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a predominantly mountainous catchment.	Velocity area station 20m wide.	Unstable gravel control which until 1990 was affected by abstraction of gravel by farmers. Cableway present.		Predominantly mountainous catchment. Largely impermeable bedrock with significant superficial deposits. Limited forestry. Rough grazing. Uplands are peaty and flat. Valley sides are steep.	Flows are natural. Significant spring snowmelt is common.
13010	Brothock Water at Arbroath	50.0	NO6395441852	363954.0	741852.0	56°34'02.0291"N 2°35'17.4180"W	56.56723	-2.58817	Brothock Water	Arbroath	8.0	SEPA-NE	14922	13	1989-01-01		VA				true	false	false	false	false	false	false	true	false	false	false	false	false	I	1989-01-01	2023-09-30	0.585	0.048	1995-08-23	1995-08-23	12.49	2020-10-04	2020-10-04	0.093	0.192	0.299	1.235	2.005	0.48	12691	12691	100.0				6.5	31.1	54.9	108.8	182.4	731	708	0.1075	0.6415	0.18	0.029	0.0419	0.0613	0.7105	0.1745	0.0002	0.0536		0.9509	0.0491		0.1912		0.8088	0.36	0.57	0.994	33.6	43.47	35.7	45.3	8.2	12.45	6.59	63	89	0.33	6.5	44.2	0.662	0.916	0.099	0.0073	0.415	0.112	0.016	0.736	0.369			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened for Arbroath flood warning scheme.	Station opened as part of Arbroath flood warning scheme, launched winter 1993/94. Station is located on straight reach, immediately u/s of road bridge.	Bed is a vegetated mix of sand and gravel, with high flows controlled by bridge. Debris thrown from bridge causes rating problems.		A gently-sloping, low-lying catchment, with fertile soils supporting a variety of crops and some forestry. Minor agricultural abstractions. Bedrock mostly ORS with some lavas and tuffs, almost entirely overlain by superficial deposits.
13012	South Esk at Gella Bridge	130.0	NO3727865336	337278.0	765336.0	56°46'31.2899"N 3°01'40.5454"W	56.77536	-3.02793	South Esk	Gella Bridge	232.0	SEPA-NE	14916	13	1991-01-01		VA			13.9	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1991-01-01	2023-09-30	5.437	0.521	1995-08-18	1995-08-22	128.5	2015-12-30	2015-12-30	0.988	2.261	3.382	11.73	17.06	0.44	11961	11961	100.0				204.5	251.2	565.4	838.1	1006.2	1448	1350	0.082	0.0063	0.1908	0.7158	0.0002	0.0942	0.0082	0.1879	0.7081	0.0009			1.0		0.0103	0.1563	0.4377	0.68	0.512	0.987	247.3	43.03	55.0	73.6	9.6	34.7	18.65	557	178	0.13	204.5	130.64	0.612	0.761	0.0414	0.0			0.0001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural upland catchment.	Velocity area station located on straight reach between bridges. Bed and control are mixture of large boulders, sand and bedrock. Opened in 12/90 as part of South Esk Flood Warning Scheme.			Upland catchment. Bedrock predominantly Dalradian metamorphics over 50% of which is overlain by superficial deposits. Predominantly mountainous with grassland (long and narrow valley supporting rough grazing), and some forest.	Natural flows. Usually experiences significant spring snowmelt. Mean loss appears anomalous.
13017	Colliston Burn at Colliston	8.4	NO6094646641	360946.0	746641.0	56°36'36.0357"N 2°38'16.2279"W	56.61001	-2.63784	Colliston Burn	Colliston	39.0	SEPA-NE	14921	13	1993-10-01		VA				true	false	false	false	false	false	false	true	false	false	false	false	false		1994-01-01	2023-09-30	0.13	0.001	1994-09-02	2022-07-22	4.361	2020-10-03	2020-10-03	0.007	0.023	0.046	0.327	0.534	0.32	10865	10500	96.641				33.1	54.3	89.6	137.9	182.4	783	750	0.032	0.8289	0.1099	0.0265	0.0026	0.003	0.9244	0.0668		0.0058		1.0			0.1161		0.8839	0.36	0.546	0.996	35.9	45.25	36.7	46.5	8.2	5.67	2.77	93	70	0.74	34.1	8.41	0.49	0.888	0.0678	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened for flood warning in Arbroath.	Velocity area station installed in Oct 1993 as part of flood warning scheme for Arbroath. Tipping bucket raingauge installed at site in Oct 1994.		High flows in Sept and Nov 2009 currently under review. Flows from Aug 2004 reprocessed in 2012.	Bedrock ORS, a locally important aquifer, with Boulder Clay cover. Low lying catchment of subdued relief supporting agriculture. Entirely rural.	Irrigation borehole upstream can influence low flows, e.g. summer 1994, 1996, 2005.
14001	Eden at Kemback	307.4	NO4145215796	341452.0	715796.0	56°19'51.2522"N 2°56'54.3948"W	56.3309	-2.94844	Eden	Kemback	6.2	SEPA-NE	14929	14	1967-01-01		VA	47.0		8.4	true	true	true	true	false	false	false	true	true	true	true	false	true	SGEI	1967-10-01	2023-09-30	4.086	0.502	2022-08-13	2022-08-13	68.85	1977-02-10	1977-02-10	0.993	1.803	2.71	8.455	11.77	0.62	20454	20454	100.0	1967-10-01		40.417	7.1	41.4	100.6	190.1	520.4	830	800	0.1212	0.5209	0.2902	0.0185	0.0416	0.1114	0.429	0.411	0.0266	0.0184	0.5532		0.4468		0.203	0.0	0.5538	0.4	0.609	0.992	72.7	29.71	34.5	45.4	8.4	40.71	20.1	109	76	0.11	7.2	308.74	0.778	1.002	0.1039	0.0039			0.0109	0.716	0.714			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a low-lying coastal catchment. Flows affected by abstractions and effluent returns.	Velocity area station, about 15m wide.	Cableway present. High flow control is downstream bridge. Low flow control is natural bar 30m d/s from hut. Bypassing occurs on the lb in the very highest floods above 2.1m, but not considered to be significant at the levels recorded. At higher levels then there is the potential for significant bypassing. Summer weed growth necessitates frequent revisions to the rating. Ratings derived from current meter gaugings up to 2.1m (about 1.1 to 1.3QMED) for each rating, simple extrapolation beyond. Recent rating review in 2003. Four peak flow ratings cover period of record.		A gently sloping and low-lying catchment between the Tay and Forth estuaries. Mixed bedrock geology; ORS along the central valley, igneous to the north, some igneous plus Carboniferous Limestone and sandstone to the south. Land use is mainly arable, grassland, and woodland. No significant catchment changes known.	Abstractions for irrigation; gw abstractions and effluent returns and small reservoirs in the headwaters.
14002	Dighty Water at Balmossie Mill	126.9	NO4764432508	347644.0	732508.0	56°28'54.3179"N 2°51'05.9954"W	56.48175	-2.85167	Dighty Water	Balmossie Mill	16.1	SEPA-NE	14919	14	1969-01-01		VA	55.0		13.3	true	true	false	true	false	false	false	true	false	false	false	false	false	SI	1969-10-01	2023-09-30	1.64	0.102	1995-08-17	1995-08-17	36.43	2022-11-18	2022-11-18	0.251	0.611	1.015	3.611	5.18	0.59	19723	19357	98.144	1969-10-01		22.921	18.5	65.2	138.7	235.3	454.0	833	797	0.0746	0.4596	0.2785	0.0348	0.1444	0.0517	0.4512	0.3335	0.0461	0.1131		0.8102	0.1898		0.076		0.7871	0.4	0.573	0.98	62.3	41.08	36.0	46.2	8.2	26.25	13.95	147	155	0.33	19.0	127.62	0.65	0.9	0.0804	0.0261	0.864	0.663	0.0662	0.934	0.539			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a predominantly low-lying catchment.	Velocity Area station 9m wide. Station added to peak flows dataset in August 2024 (WINFAP Files v13).	Cableway removed 1999. Summer weed growth necessitates frequent revisions to the stage-discharge relationship. High flow gaugings up to 29.4 cumecs. Potential backing up from bridge at extreme high flows. All flows contained. Multiple peak flow ratings across period of record.	Peak flows held from 2008 pending consolidation of earlier ratings.	Gently sloping and low-lying catchment except for the far N and W edges which drain S flank of Sidlaw Hills (up to 450m). Bedrock predominantly Devonian S'st, mostly overlain by superficial deposits. Lower part of catchment urban (Dundee), the rest mainly arable, with grassland and some forest.	Very flashy.
14005	Motray Water at St Michaels	60.0	NO4403322381	344033.0	722381.0	56°23'25.3287"N 2°54'29.2113"W	56.39037	-2.90811	Motray Water	St Michaels	19.0	SEPA-NE	14930	14	1983-01-01		VA			18.7	true	false	false	false	false	false	false	true	false	false	false	false	false	I	1984-01-01	2023-09-30	0.576	0.039	2006-07-30	2006-07-30	17.53	2022-11-18	2022-11-18	0.1	0.211	0.341	1.234	1.785	0.57	14518	14518	100.0				7.6	24.6	78.4	140.0	278.8	749	723	0.0915	0.5836	0.2989	0.0046	0.0148	0.0796	0.5119	0.3733	0.0232	0.0109		0.2624	0.7376		0.2623		0.4054	0.41	0.634	0.997	91.4	32.54	32.9	42.1	8.2	19.8	10.92	80	97	0.09	7.6	58.3	0.529	0.888	0.0646	0.0002			0.0011					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a low lying catchment in North East Scotland.	Velocity area station, 4m wide.	Control is kerbstones at low flow, channel at medium flow and bridge at high flow. Kerb weir rebuilt in Nov 1995, station recalibrated. No cableway, gauged from bridge.	Abstractions and discharges from sand and gravel workings cause cyclical pattern, particularly apparent at low flows, e.g. autumn 1986 and summer-autumn 2003.	Low-lying catchment. Bedrock ORS and igneous; two thirds of which is overlain by superficial deposits. Arable and rough grazing; some woodland.	Abstractions for irrigation.
14006	Monikie Burn at Panbride	16.0	NO5740036101	357400.0	736101.0	56°30'54.0627"N 2°41'37.9278"W	56.51502	-2.69387	Monikie Burn	Panbride	16.0	SEPA-NE		14	1987-01-01	1992-02-09	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	SI	1987-01-01	1991-12-31	0.186	0.003	1989-08-02	1990-07-25	9.66	1990-07-30	1990-07-30	0.012	0.047	0.1	0.411	0.603	0.44	1826	1826	100.0				15.2	55.4	145.0	205.4	252.8	839	788	0.1992	0.4851	0.241	0.0338	0.0166	0.1166	0.5018	0.2786	0.0573	0.0161		0.8869	0.1131		0.0085		0.9532	0.36	0.561	0.88	40.0	42.93	37.5	48.1	8.2	15.21	8.87	142	139	0.5	15.5	17.12	0.462	1.082	0.0542	0.002			0.0068	0.708	1.031			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a low lying catchment. Station closed in 1992.	Velocity area station, 2.5m wide. Railway sleepers form the low flow control. Station opened for spray irrigation monitoring. Closed 12/1992 due to scour below railway sleeper control.	Gauged by wading to bankfull (about 1m). There are problems with weed growth.	Data may be of limited value.	Low undulating catchment on ORS. Mainly used for arable farming.	Small recreational reservoirs (formerly for PWS) affect flow when being cleaned out. Agricultural abstractions can reduce flow to zero.
14007	Craigmill Burn at Craigmill	29.0	NO5760635810	357606.0	735810.0	56°30'44.7190"N 2°41'25.7064"W	56.51242	-2.69047	Craigmill Burn	Craigmill	10.5	SEPA-NE	14920	14	1987-01-01	2010-05-13	VA			55.0	true	false	false	false	false	false	false	false	false	false	false	false	false	SI	1987-01-01	2009-12-31	0.326	0.001	1995-08-18	1995-08-18	6.994	2009-09-04	2009-09-04	0.017	0.083	0.154	0.781	1.209	0.4	8401	8401	100.0				11.3	53.4	146.7	198.1	252.8	835	786	0.245	0.4591	0.2283	0.0339	0.0121	0.1957	0.4312	0.2969	0.0411	0.0125		0.883	0.117		0.0544		0.9229	0.36	0.566	0.882	38.3	42.62	37.7	48.3	8.3	15.71	8.92	139	137	0.5	11.8	28.9	0.512	1.139	0.07	0.0012			0.0043					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a lowland catchment in North East Scotland. Station closed in 2010.	Velocity area station, 5m wide. Station closed during 2010.	Kerb weir control constructed Oct 1996 in attempt to make more sensitive at low flows; previously unstable silt and gravel control. No cableway. Calibrated to 0.7m (medium flow). Fairly slow flows. Weed growth is a problem.		Lowland catchment. Bedrock predominantly ORS; almost entirely overlain by superficial deposits. Land use mainly arable, grassland and forest.	Abstractions for irrigation. Recreational reservoirs (formerly PWS; 2 u/s + 2 irrigation lagoons) affect flows when being cleaned out. Transfer between reservoirs is common practice.
14009	Eden at Strathmiglo	26.0	NO2250810163	322508.0	710163.0	56°16'39.3007"N 3°15'11.0810"W	56.27758	-3.25308	Eden	Strathmiglo	47.8	SEPA-NE	14931	14	1989-01-01		VA				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1991-01-01	2023-09-30	0.503	0.018	2022-07-19	2022-07-20	13.67	2002-10-22	2002-10-22	0.101	0.206	0.316	1.006	1.49	0.56	11961	11961	100.0				48.4	83.9	147.3	217.6	435.1	968	931	0.0687	0.5898	0.272	0.0367	0.0283	0.0521	0.5322	0.3462	0.0558	0.0137	0.6		0.4				0.8437	0.45	0.628	1.0	78.6	31.42	37.8	48.7	8.7	14.26	8.31	154	71	0.18	48.4	29.9	0.331	0.811	0.0388	0.0014			0.0038					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a lowland catchment; some minor artificial influences.	Velocity area station.	All but highest flows contained; by-passing is very minor. Sand/cobble bed with grassy island providing control; growth of vegetation necessitates seasonal recalibration.		Lowland catchment with gentle hills rising to the N and the steeper Lomonds to the S. Mixed bedrock of ORS and various igneous types, most of which is overlain by superficial deposits. Landuse is predominantly arable agriculture at lower levels, and grazing (some improved land) with some forest.	Strathmiglo STW effluent (minor) bypasses station.
14010	Motray Water at Kilmany	33.0	NO3871021631	338710.0	721631.0	56°22'58.6944"N 2°59'38.9151"W	56.38297	-2.99414	Motray Water	Kilmany	22.0	SEPA-NE	14932	14	1989-01-01	2010-06-07	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	I	1991-01-01	2009-12-31	0.309	0.002	2006-08-15	2006-08-16	8.191	1992-04-01	1992-04-01	0.024	0.087	0.168	0.735	1.06	0.55	6940	6940	100.0				21.1	51.4	101.7	151.2	278.8	769	738	0.0818	0.5955	0.304	0.0036	0.0125	0.0599	0.4997	0.4012	0.0325	0.0068		0.0019	0.9981		0.0012		0.5314	0.45	0.589	0.996	96.8	34.87	32.9	42.5	8.3	11.8	6.97	100	110	0.1	21.1	31.32	0.471	0.938	0.0567	0.0003			0.001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened for irrigation monitoring. Station closed in 2010.	Station established to monitor spray irrigation abstractions in fertile area of NE Fife. Station closed during 2010.	Banks to 1.5m will contain all flows; cobble bed is rather uneven but stable. A wooden footbridge u/s allows measurement of high flows >2.1 cumecs.		Lowland catchment. Bedrock intermediate/basic extrusives of Devonian/ORS age; approx. 50% overlain by superficial deposits. Fertile soils support a variety of crops at lower levels with grassland elsewhere.	Abstractions for irrigation are mainly at a single point and produce marked steps in the hydrograph.
15001	Isla at Forter	70.7	NO187647	318700.0	764700.0	56°46'00.3752"N 3°19'53.8825"W	56.76677	-3.33163	Isla	Forter	285.0	TRWS		15	1956-01-01	1968-09-30	FL		100.0		true	false	false	false	false	false	false	false	false	false	false	false	false		1953-10-01	1968-09-30	2.705	0.311	1963-02-21	1963-02-22	25.4	1962-09-30	1962-09-30	0.742	1.3	1.872	5.188	7.314	0.57	5479	3287	59.993				288.4	404.3	638.9	888.7	1067.3	1466	1436	0.0549		0.2351	0.7039		0.0187		0.2366	0.7446	0.0001			1.0			0.1142	0.4235	0.68	0.433	1.0	245.5	46.86	46.6	65.9	9.4	19.57	10.47	644	188	0.21	288.4	71.68	0.33	0.689	0.0234	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound flume, suffers from gravel accumulation.	Compound standing-wave flume, 4km NNW of Kirkton of Glenisla.	Substantial and variable gravel accumulation - could impact on station calibration; may explain notably high mean runoff.
15002	Newton Burn at Newton	15.4	NO230605	323000.0	760500.0	56°43'47.2087"N 3°15'36.1611"W	56.72978	-3.26004	Newton Burn	Newton	256.0	TRWS		15	1960-10-01	1968-09-30	TP		21.0		true	false	false	false	false	false	false	false	false	false	false	false	false		1959-10-01	1968-09-30	0.486	0.099	1962-07-13	1962-07-18	5.678	1960-02-03	1960-02-03	0.139	0.229	0.32	1.022	1.356	0.58	3288	3257	99.057				235.9	311.8	442.8	640.9	797.2	1234	1199	0.5049	0.0006	0.13	0.3636		0.5223	0.0023	0.1457	0.327	0.0022			1.0			0.1674	0.4421	0.68	0.462	1.0	198.4	39.29	44.2	59.6	8.8	14.4	7.71	460	178	0.22	235.9	16.78	0.218	0.877	0.0152	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound sharp-edged weir gauging a responsive catchment. Closed in 1968.	A compound sharp-edged weir with three crests; about 16m wide overall. 2km above the confluence with the River Isla.	Hydrometric performance uncertain.			Responsive regime. Import of water from a neighbouring catchment influences the water balance.
15003	Tay at Caputh	3210.0	NO0828939575	308289.0	739575.0	56°32'21.1105"N 3°29'34.5931"W	56.5392	-3.49294	Tay	Caputh	35.6	SEPA-NE	14936	15	1947-01-01		VA			3.3	true	true	true	true	false	false	false	true	false	false	false	false	false	SH	1947-10-01	2023-09-30	141.936	8.066	1955-08-12	1955-08-12	1503.0	1950-02-17	1950-02-17	36.37	72.43	108.9	280.7	356.6	0.64	27759	27759	100.0	1951-10-01		865.004	35.8	208.3	438.1	740.2	1210.0	1611	1609	0.1627	0.0067	0.2242	0.5576	0.0014	0.1557	0.0061	0.2581	0.5423	0.002		0.0042	0.9462	0.0496	0.0079	0.0633	0.4938	0.69	0.437	0.807	185.9	45.36	43.4	61.1	9.9	117.55	67.4	460	124	0.06	35.8	3211.22	0.848	0.938	0.0406	0.0007			0.0007					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a catchment with steep, mountainous headwaters. 62% of the catchment controlled for HEP.	Velocity area station, about 95m wide. Original station (with bridge control) was moved u/s in 1975. Flows at the old station were all contained.	Cableway present, span 120m. Natural control. Bypassing occurs mostly on the left bank at levels above 3.15m - new temporary channel created in 1993 flood. Peak flow ratings derived from current meter gaugings up to 5.3m (about 2.3QMED), simple extrapolation beyond. Data transfer from old site and hydraulic re-construction also used for the highest floods. Peak flow ratings reviewed in 2003.	Twice daily stage readings from July 1937, continuous recording from October 1951. Monthly naturalised data available 1973-1987. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Steep, mountainous headwaters, often snowy in winter. Bedrock mostly metamorphics and granites with more than half overlain by superficial deposits. Landuse mountains and moorland, rough grazing and forestry. Upstream of Dunkeld there are agricultural floodbanks within a reach spanning some 15km including the confluence of the Upper Tay with River Tummel.	62% of catchment controlled for HEP; developed from 1930s to 1957 - reservoirs and water transfers throughout the Tay and Tummel catchments. Net water import. Substantial surface storage; numerous lochs, largest are Ericht, Rannoch, Tummel and Tay.
15004	Inzion at Loch of Lintrathen	24.7	NO280559	328000.0	755900.0	56°41'21.3484"N 3°10'37.4073"W	56.68926	-3.17706	Inzion	Loch of Lintrathen	199.0	TRWS		15	1927-01-01	1968-09-30	TP		10.5		true	false	false	false	false	false	false	false	false	false	false	false	false		1927-01-01	1968-09-30	0.555	0.063	1968-07-20	1968-07-23	6.286	1963-03-14	1963-03-14	0.13	0.266	0.399	1.11	1.487	0.64	15249	7822	51.295				211.4	246.7	369.7	490.9	673.8	1103	1081	0.0457	0.0219	0.3032	0.6276		0.0697	0.0089	0.3155	0.6056			0.0574	0.9426		0.0653		0.364	0.53	0.529	0.997	187.7	35.63	44.2	56.6	8.8	11.13	6.39	371	171	0.27	211.4	24.47	0.29	0.44	0.0291	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound sharp-edged weir situated above the Loch of Linthrathen.	Compound sharp-edged weir about 9m wide situated 265m above the Loch of Linthrathen.		Incomplete series but daily flows for 1927-38.
15005	Melgan at Loch of Lintrathen	40.9	NO275558	327500.0	755800.0	56°41'17.8363"N 3°11'06.6847"W	56.68829	-3.18519	Melgan	Loch of Lintrathen	212.0	TRWS		15	1927-01-01	1968-09-30	TP		15.8		true	false	false	false	false	false	false	false	false	false	false	false	false	S	1927-01-01	1968-09-30	1.0	0.021	1968-08-12	1968-08-12	13.4	1966-10-06	1966-10-06	0.216	0.459	0.677	2.036	2.872	0.58	15249	8429	55.276				209.6	266.9	399.6	531.6	676.4	1137	1117	0.1993	0.0118	0.1955	0.5511		0.2308	0.0024	0.2726	0.4537	0.0007		0.0613	0.9387		0.0454	0.0541	0.4203	0.57	0.478	0.812	165.8	38.16	43.8	57.7	8.7	17.93	10.52	399	193	0.21	209.6	41.92	0.217	0.558	0.018	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound sharp-crested weir, above Loch Lintrathan.	Compound sharp-crested weir, 11.8m wide about 700m above Loch Lintrathan.	Hydrometric performance uncertain.	Incomplete record; early flows from 1927. All flows bar the summer of 1968 pre-date the construction of u/s impounding reservoir.
15006	Tay at Ballathie	4587.1	NO14753668	314750.0	736680.0	56°30'51.8907"N 3°23'13.0704"W	56.51441	-3.38696	Tay	Ballathie	26.2	SEPA-NE	14937	15	1952-01-01		VA	620.0		1.8	true	true	true	true	false	true	false	true	true	true	true	true	true	SPIH	1952-10-01	2023-09-30	172.06	11.46	1955-08-06	1955-08-06	1965.0	1993-01-17	1993-01-17	44.72	86.59	133.5	339.6	434.0	0.64	25932	25932	100.0	1952-10-01		1042.115	22.2	119.0	395.1	715.6	1210.0	1442	1424	0.1594	0.0721	0.2466	0.481	0.0041	0.1454	0.0658	0.2806	0.4761	0.0044		0.1276	0.8292	0.0431	0.0507	0.0502	0.512	0.58	0.473	0.847	166.7	42.87	41.6	57.6	9.4	130.36	70.01	411	136	0.07	22.2	4586.79	0.915	0.811	0.0534	0.0014			0.0015					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the most downstream on the Tay. Station has the highest gauged daily flow in the UK.	Velocity area station with cableway; 90m wide. The most d/s station on the Tay which records the highest gauged daily flow in the UK.	Control is bed slope and channel cross-section. To date all flows have been contained. Two ratings derived from current meter gaugings up to 5.413m (06/12/15, measured at 1447 cumecs), simple extrapolation beyond. Some hydraulic re-constructions analysis undertaken to estimate highest floods.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Mountainous headwater catchment, often snowy in winter. Catchment is mostly steep (mountains and moorland), exceptions are lower valleys. Bedrock mainly metamorphics and granite, but the lower catchment (Isla Valley) is ORS. Over half of the catchment is overlain by superficial deposits (mostly Boulder Clay). Landuse is mainly rough grazing and forestry. Several large lochs in catchment (Ericht, Tummel, Tay and Rannoch).	Since end of 1957, 1980 sq.km (43%) controlled for HEP. From mid-nineties there may be an influence on flood frequency lower down the Tay due to change in HEP management of levels to accommodate greater storage for flood water. Some control prior to this. 73 sq.km controlled for water supply. Significant winter snow cover.
15007	Tay at Pitnacree	1149.4	NN9240353411	292403.0	753411.0	56°39'36.2456"N 3°45'24.8449"W	56.66007	-3.7569	Tay	Pitnacree	60.7	SEPA-NE	14935	15	1957-01-01		VA	610.0		4.4	true	true	true	true	false	false	false	true	false	false	false	false	false	H	1957-10-01	2023-09-30	59.158	3.569	1984-08-24	1984-08-24	601.6	2006-12-14	2006-12-14	12.97	30.28	45.21	119.6	152.5	0.63	24106	24106	100.0	1951-11-02		360.023	65.8	178.2	464.6	749.7	1210.0	1900	1950	0.1385	0.0072	0.3096	0.4953	0.0014	0.1433	0.0069	0.3822	0.4317	0.0016			0.9584	0.0416	0.0045	0.0019	0.5319	0.7	0.442	0.836	230.0	44.6	49.4	69.9	10.4	89.04	47.49	467	83	0.06	65.8	1149.08	0.917	0.912	0.0373	0.0005			0.0007					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the upper Tay. Part of the catchment controlled for HEP.	Velocity area station, about 90m wide.	Cableway present. Control is unstable gravel bed. To date all flows contained. Three peak flow ratings across period of record derived from current meter gaugings; Rating QHigh1959 from gaugings up to 2.6m (about 1.3QMED). The station was moved from the left bank to the right bank on 01/07/1975 and a new datum was established. The switch to rating QHigh1975 accommodates this datum change. QHigh1975 is based on gaugings up to 3.5m (about 1.5QMED), with simple extrapolation beyond.	Naturalised monthly flows available from 1973 to 1987. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Mountainous headwaters, often snowy in winter. Most of the catchment is steep. Bedrock almost entirely metamorphic; half overlain by superficial deposits. Land use mainly moorland, rough grazing and forestry. Contains Loch Tay - the largest natural standing water body in greater Tay catchment.	293 sq.km (25% of catchment) controlled for HEP but no further development post-1960.
15008	Dean Water at Cookston	177.1	NO3404847954	334048.0	747954.0	56°37'07.6269"N 3°04'34.6976"W	56.61879	-3.0763	Dean Water	Cookston	45.1	SEPA-NE	14943	15	1958-01-01	2008-12-31	VA	52.0		11.8	true	true	true	true	false	false	false	false	false	false	false	false	false	EI	1958-10-01	2008-12-31	2.648	0.27	1973-11-28	1973-11-28	34.5	1982-10-13	1982-10-13	0.594	1.067	1.672	5.695	8.16	0.59	18355	18355	100.0	1953-10-01		26.832	45.7	59.3	128.8	245.5	454.0	875	840	0.103	0.5229	0.2427	0.0968	0.0316	0.0977	0.4772	0.2975	0.0877	0.0366		0.9498	0.0502		0.2767		0.6218	0.38	0.622	0.973	59.2	37.21	37.1	48.3	8.2	26.19	14.31	140	15	0.12	45.7	176.61	1.006	0.831	0.1266	0.0108	0.746	1.077	0.0146	0.819	1.068			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Flows affected by abstraction at low flows and imports from the Isla catchment.	Velocity area station, about 10m wide.	Cableway present. Control is a road bridge. All flows contained to date. Summer weed growth is a problem during low flows. No high flow gauging since 1988. Peak flow ratings from current meter gauging; Rating 1 from gaugings up to 2m (about 1.2 QMED), Rating 2 from gaugings up to 2m (about QMED), simple extrapolation beyond.	Naturalised monthly flows available 1973-87. August - December 1973 flows missing due to faulty equipment.	Low-lying and gently sloping catchment except for the South which drains the northern flank of the Sidlaw Hills. Bedrock almost entirely ORS; largely overlain by superficial deposits. Land use mainly arable and predominantly rural, but urbanised (Forfar) around head of main channel. No significant catchment changes known.	Slow reacting - flattish peaks. Attenuation at the top end of catchment in Forfar Loch area. Reversal of flow back up into Forfar Loch under extreme flows. Industrial and agricultural abstractions in low flows and in the lower parts agricultural embankments. The town of Forfar discharges treated effluent into Forfar Loch in the upper catchment; this is an import from the Isla River.
15010	Isla at Wester Cardean	366.5	NO2942646595	329426.0	746595.0	56°36'21.2563"N 3°09'04.4377"W	56.6059	-3.15123	Isla	Wester Cardean	41.5	SEPA-NE	14944	15	1972-01-01		VA	57.0		8.2	true	false	false	false	false	false	false	true	false	false	false	false	false	PI	1972-01-01	2023-09-30	8.06	0.835	1995-08-17	1995-08-17	163.9	2022-11-18	2022-11-18	1.626	3.36	5.166	16.98	24.82	0.53	18901	18536	98.069				37.3	130.0	336.7	650.9	1067.3	1116	1086	0.1522	0.1291	0.3408	0.3613	0.0033	0.1537	0.0968	0.3777	0.3574	0.0037		0.2848	0.71	0.0052	0.1128	0.0466	0.4665	0.51	0.532	0.94	150.8	37.32	40.5	53.8	8.5	52.95	25.66	362	162	0.25	37.3	363.76	0.583	0.71	0.0473	0.0008			0.001					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a mountainous catchment, significantly influenced by upstream impounding reservoirs.	Velocity area station, about 25m wide. Removed from Peak Flow Dataset in August 2021 (WINFAP Files v10).	Cableway present. Until 1994 an island downstream of the station was high flow control. Island was removed in 1994 by landowner, hence control is now unstable for high flows and backing up occurs which can affect the rating. Bypassing occurs at levels above 3.3m from about 2km u/s - flows bypass on the right bank bend via meadow by overtopping of levees. Ratings derived from current meter gaugings up to 2.7m, simple extrapolation beyond. Data removed from peak flows dataset due to low confidence in flood estimates due to unstable control, hysteresis and bypassing.	Naturalised monthly flows available from 1973-1985. High flow data post-1994 is of poor quality due to unstable control and bypassing at the station.	Mountainous headwaters, often snowy in winter. Catchment lies on southern edge of Grampians rising above 1000m and has mainly steep slopes. Southern part of the catchment is sandstone, the remainder is metamorphic and igneous. More than half of the catchment is overlain by superficial deposits. Landuse predominantly rough grazing and forestry in uplands, cattle and arable in lowlands. No significant catchment changes known.	Significantly influenced by impounding reservoir system of Loch of Lintrathen and Blackwater Reservoirs (supply for Dundee). Appreciable net export. This provides public water supply, industrial and agricultural abstractions.
15011	Lyon at Comrie Bridge	391.1	NN7852948684	278529.0	748684.0	56°36'51.2251"N 3°58'51.1131"W	56.61423	-3.98086	Lyon	Comrie Bridge	92.1	SEPA-NE	14951	15	1958-01-01		VA	370.0		5.4	true	true	true	true	false	false	false	true	false	false	false	false	false	H	1958-01-01	2023-09-30	12.687	1.702	1976-09-02	1976-09-06	365.7	2006-12-13	2006-12-13	3.161	5.326	7.577	27.83	39.76	0.44	24014	24014	100.0	1972-10-01		219.003	94.9	283.9	563.7	805.6	1210.0	1947	2005	0.0731	0.0042	0.273	0.6018	0.0006	0.0685	0.0015	0.3373	0.5712	0.0002			0.9747	0.0253		0.0057	0.4852	0.7	0.439	0.907	272.1	47.57	49.9	71.6	10.7	59.97	31.03	552	97	0.08	94.9	388.33	0.64	0.869	0.0283	0.0003			0.0001					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a steeply sloping catchment with HEP storage.	Velocity area station 40m wide. Upgraded from pressure recorder (installed 1972, start of peak flows) to full network status in 1983. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	170 sqkm controlled for HEP (major development 1951-59) storage in Lochs Lyon, An Daimh and Stronuich. Hydro-power diversions greatly reduce catchment runoff. Flows affected by ice during cold winters. Multiple peak flow ratings across period of record.	Peak stage and flows pre-1981 are taken from SEPA black summary books and charts, no rating is available for this period. Twice-daily ramp readings: 6/37 to 9/72. 'Weekly' nature of time-series prior to 1973. Naturalised monthly flows available from 1973-87.	Steeply sloping catchment (Grampian mountains). Bedrock metamorphic (schist, quartzite and marble) with approx. Half overlain by superficial deposits. Land use rough grazing and forestry.	170 sq.km controlled for HEP (major development 1951-59) storage in Lochs Lyon, An Daimh and Stronuich. Hydro-power diversions greatly reduce catchment runoff.
15012	Tummel at Pitlochry	1670.0	NN9471857417	294718.0	757417.0	56°41'47.6437"N 3°43'14.8618"W	56.69657	-3.72079	Tummel	Pitlochry	74.0	SEPA-NE	14963	15	1973-01-01		VA			3.2	true	false	false	false	false	false	false	true	false	false	false	false	false	H	1973-01-01	2023-09-30	74.382	11.19	1996-09-27	1996-09-27	706.5	2008-01-25	2008-01-25	19.97	33.67	55.89	147.1	185.5	0.63	18535	18535	100.0				80.1	271.4	453.0	756.8	1133.4	1495	1484	0.132	0.0024	0.1579	0.6524	0.0011	0.1335	0.0015	0.1688	0.6533	0.002			0.933	0.067	0.0014	0.1207	0.4438	0.72	0.418	0.758	166.1	47.93	40.8	57.9	9.8	88.59	43.13	485	143	0.08	83.4	1666.33	0.539	1.088	0.0367	0.0007			0.0006					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a catchment entirely controlled for HEP.	Velocity area station below Faskally Dam. Used for flood warning. Original site 15804 Balinluig (1720 sq.km) moved 8km u/s to 15012 Port-na-craig (1649 sq.km) in 1978. Port-na-craig formally superseded by Pitlochry (1670 sq.km) 700m d/s on 11/4/95 but station number 15012 retained.	Cableway present. Control scoured by Jan 1993 flood, low flow levels thence below inlet pipe.	Naturalised monthly flows from 1973-87. Data 9/9/93-11/4/95 estimated from Pitlochry 15045.	Most of catchment is steeply sloping (Grampians >1000m). Bedrock predominantly impermeable, metamorphic, with more than half by superficial deposits. Landuse mainly rough grazing and forestry.	Entire catchment controlled for HEP; major storage in Lochs Ericht, Rannoch, Tummel and Faskally. Flows maintained above approx. 19 cumecs.
15013	Almond at Almondbank	174.8	NO0671525811	306715.0	725811.0	56°24'54.9905"N 3°30'48.9544"W	56.41528	-3.5136	Almond	Almondbank	20.4	SEPA-NE	14954	15	1955-01-01		VA	195.0		10.9	true	true	true	true	false	false	false	true	false	false	false	false	false	PH	1955-01-01	2023-09-30	5.362	0.142	1955-08-01	1955-08-02	169.3	1993-01-16	1993-01-16	0.762	1.929	3.123	11.56	17.61	0.44	25110	25089	99.916	1973-02-01		120.636	21.4	154.4	399.7	708.6	926.2	1460	1394	0.2195	0.0379	0.3188	0.4142	0.002	0.0792	0.025	0.383	0.5104	0.0016		0.3319	0.6681		0.1058		0.4505	0.61	0.466	0.996	196.9	42.65	44.8	61.0	9.8	51.25	28.84	408	126	0.17	22.7	173.28	0.473	0.732	0.0308	0.0004			0.0014					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station draining the south east Grampians. Station is the lowest tributary on the Tay above the tidal limit.	Control and bank instability and various engineering works have impacted the performance since 2008. From around 2008 there was bank erosion on the right bank opposite the stilling well hut and there was further washing out of the old stone mill weir that is located downstream of station and downstream confluence of East Pow. Flood protection works (phase 1) were on going from circa 2010 to repair bank erosion and weir. Weir was rebuilt to include fish pass. Flood Protection work ongoing since 2016 (phase 2).	Cableway present. Natural control. Channel affected by ice during prolonged periods of low temperature. Weir downstream could be control for high flows. Ratings derived from current meter gaugings up to 2.3m (about 1.1QMED), simple extrapolation beyond. Several ratings across period of record.	Daily read gauge boards from January 1955 to January 1973. Naturalised monthly flows available from 1973-1985. December 1971/Jan 1972 flows removed from the NRFA; December 2009/January 2010 and December 2010 flows considered suspect due to ice formation. 1993 highest flow checked by slope area method. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Mountainous, often snowy in winter. Long, narrow, steeply sloping catchment draining Glen Almond in SE of Grampians. Two thirds of bedrock is metamorphic the remainder is sandstone. Over half of the catchment is overlain by superficial deposits. Land use is heather moor, rough grazing in upper parts with some cattle in the lower, some forest cover. HEP schemes have developed within the catchment.	Very flashy. 30 sq.km controlled for HEP. Minor abstraction from Fendoch Burn for water supply - affecting only low and medium flows.
15014	Ardle at Kindrogan	103.0	NO0561963026	305619.0	763026.0	56°44'57.3710"N 3°32'41.7529"W	56.74927	-3.54493	Ardle	Kindrogan	248.0	SEPA-NE	14955	15	1985-04-01		VA			8.4	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1985-01-01	2023-09-30	3.301	0.154	2021-07-25	2021-07-25	46.25	2016-01-03	2016-01-03	0.465	1.169	1.884	7.65	11.52	0.39	14152	14152	100.0				251.8	341.9	502.7	685.7	1105.6	1298	1143	0.1112		0.2412	0.6444		0.0824	0.0004	0.3027	0.6132				0.9413	0.0587	0.0055	0.0012	0.5552	0.69	0.434	0.99	182.4	43.41	37.6	50.7	8.6	18.14	9.61	508	170	0.12	251.8	105.54	0.35	0.663	0.0262	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a mountainous catchment.	Velocity area station 14m wide.	All flows contained. High flows gauged from bridge d/s. Boulder and gravel control.	Extreme low temperatures can cause ice build up and hence erroneous flow values, e.g. Dec 2001 - Jan 2002.	Mountainous steep catchment on metamorphic rock with some l'st outcrops, half is overlain by superficial deposits. Landuse mainly rough grazing with some forestry.	Natural flows.
15015	Almond at Newton Bridge	84.0	NN8922831341	289228.0	731341.0	56°27'40.1450"N 3°47'57.2439"W	56.46115	-3.79923	Almond	Newton Bridge	210.7	SEPA-NE	14953	15	1981-01-01		VA			12.3	true	false	false	false	false	false	false	true	false	false	false	false	false	I	1986-01-01	2023-09-30	3.076	0.2	2023-06-16	2023-06-16	84.17	1993-01-16	1993-01-16	0.482	1.086	1.719	6.78	10.28	0.42	13787	13787	100.0				210.6	328.7	577.9	763.7	926.2	1684	1646	0.1083	0.0007	0.2185	0.6707		0.0056	0.0001	0.3306	0.6637				1.0				0.3783	0.65	0.404	1.0	268.3	45.62	51.5	70.5	10.8	23.27	11.66	559	102	0.07	210.7	84.28	0.28	0.686	0.0168	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a mainly natural catchment, some area controlled for HEP.	Velocity area station 15m wide.	Cableway present. Stable control of gravel and small stones.	Control and channel may be affected by ice during prolonged periods of low temperature (Dec 2009-Mar 2010 and Dec 2010 flows considered suspect).	Steep mountainous catchment on metamorphic rock, a third overlain by superficial deposits. Land use mostly rough grazing; some forestry.	30 sq.km controlled for HEP otherwise natural regime - very flashy.
15016	Tay at Kenmore	600.9	NN7821446706	278214.0	746706.0	56°35'46.9973"N 3°59'06.2224"W	56.59639	-3.98506	Tay	Kenmore	100.4	SEPA-NE	8295	15	1974-01-01		VA	34.0		6.4	true	true	true	true	false	false	false	true	false	false	false	false	false	H	1974-01-01	2023-09-30	46.789	1.75	1984-08-20	1984-08-20	361.6	1990-02-05	1990-02-05	7.54	23.04	36.67	97.23	122.1	0.66	18170	18170	100.0	1974-07-01		196.18	99.7	161.2	451.5	730.3	1210.0	2068	2130	0.1197	0.001	0.3532	0.4662	0.0013	0.131	0.004	0.4521	0.3621	0.0015			0.9366	0.0634			0.5359	0.71	0.423	0.76	226.5	44.79	52.9	75.1	10.7	68.92	35.36	446	78	0.07	99.7	598.28	0.795	1.1	0.0344	0.0002			0.0006					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in the upper Tay, 2km d/s from Loch Tay.	Velocity area station, about 60m wide.	Cableway present. Natural control. All flows contained to date. Strong winds over Loch Tay (2km upstream) can affect flows. Current ratings derived from current meter gaugings. Flow estimates above the highest gauging are based on simple extrapolation. Multiple peak flow ratings across period of record.	Daily gaugeboard readings 1959-1974. Naturalised monthly flows available 1974-1985. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10) and in August 2024 (WINFAP Files v13).	The catchment is in the Grampians (rising up to >1200m) and is steeply sloping except for the valley bottom. Mountainous, often snowy in winter. Bedrock almost all metamorphic; half overlain by superficial deposits. Land use rough grazing with forest. Catchment contains Loch Tay (16 miles long, 1.5miles wide) and some smaller lochs u/s. HEP schemes have developed in the catchment.	Slow reacting regime. 120 sq km of the catchment is controlled for hydroelectric power. Water imported from Lyon catchment since 1958 - evident in water balance. Water exported to Loch Earn catchment since 1958.
15017	Braan at Ballinloan	197.0	NN9791340557	297913.0	740557.0	56°32'45.1498"N 3°39'43.1269"W	56.54587	-3.66198	Braan	Ballinloan	152.3	SEPA-NE		15	1975-01-01	1980-12-31	VA	158.0			true	false	false	false	false	false	false	false	false	false	false	false	false		1975-10-01	1980-12-31	6.127	0.193	1977-07-13	1977-07-13	85.16	1978-12-08	1978-12-08	0.394	1.884	3.496	14.93	20.92	0.39	1919	1919	100.0				146.6	270.7	406.5	588.6	866.6	1512	1345	0.3065	0.0021	0.2557	0.4209		0.2147	0.0022	0.2647	0.5046	0.0001			1.0				0.5972	0.65	0.431	0.924	148.4	40.35	39.9	53.6	9.3	30.62	14.3	419	79	0.07	146.8	197.15	0.444	0.871	0.033	0.0001			0.0001					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a most upland catchment. Replaced by 15023.	Velocity area station. Superseded by d/s 15023 (area difference 13 km2).			Mostly upland catchment with impermeable bedrock, and some superficial deposits of mixed permeability. Land use: heath, forest, grasslands.	Responsive regime.
15018	Lyon at Moar	161.4	NN534448	253400.0	744800.0	56°34'19.8395"N 4°23'15.8962"W	56.57218	-4.38775	Lyon	Moar	244.0	NSHE		15	1953-01-01	1958	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1953-10-01	1958-09-30	10.148	0.198	1955-08-08	1955-08-15	157.7	1955-12-28	1955-12-28	0.85	2.407	4.616	25.51	40.78	0.23	1826	1826	100.0				243.8	360.2	601.6	806.5	1079.2	2421	2445	0.0087		0.3175	0.5869		0.0099	0.0001	0.4151	0.5267	0.0001			0.9675	0.0325		0.0008	0.4921	0.79	0.392	0.794	273.9	51.59	57.9	84.4	11.8	26.38	13.28	592	92	0.1	243.8	160.57	0.451	0.787	0.0221	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a Highland catchment with responsive regime. Station closed in 1958.	River section 2km u/s of Meggernie Castle.		All but the 1958 flows predate Breadalbane HEP project.	Very wet Highland catchment.	Very responsive regime.
15021	Lunan Burn at Mill Bank	94.0	NO1809540023	318095.0	740023.0	56°32'42.1225"N 3°20'01.2400"W	56.54503	-3.33368	Lunan Burn	Mill Bank	35.0	SEPA-NE	14945	15	1983-01-01	2021-03-31	VA			14.0	true	false	false	false	false	false	false	false	false	false	false	false	false	IN	1984-01-01	2021-03-31	1.604	0.045	1995-08-16	1995-08-16	45.4	2016-01-04	2016-01-04	0.166	0.662	1.136	3.473	4.608	0.64	13605	13570	99.743				32.9	52.9	142.0	366.0	560.4	909	877	0.2389	0.1802	0.3399	0.1883	0.0069	0.1488	0.1642	0.3878	0.2509	0.0113		0.4297	0.5703		0.205		0.3944	0.46	0.592	0.753	100.5	33.66	34.6	45.4	8.5	29.13	14.82	180	162	0.21	33.1	94.45	0.432	0.714	0.0549	0.002			0.0018					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a rural hilly catchment in North East Scotland. Downgraded to level only in April 2021.	Velocity area station, 7.5m wide.	No cableway. Stable cobbled bed control (old ford) under a bridge; bridge is high flow control. Not gauged at very high flows.	Equipment failure results in gaps in the record e.g. Oct-Nov 2009. Downgraded to level only in April 2021.	Undulating hilly catchment to about 400m. Mixed permeability bedrock with two thirds overlain by superficial deposits. Mixed arable farming and rough grazing with natural woodlands. Five small natural lochs in the catchment.	Minor abstractions for irrigation.
15023	Braan at Hermitage	210.0	NO0132042158	301320.0	742158.0	56°33'39.5312"N 3°36'25.9262"W	56.56098	-3.6072	Braan	Hermitage	52.6	SEPA-NE	8402	15	1982-01-01		VA			12.9	true	true	true	true	false	false	true	true	false	false	false	false	false	N	1983-01-01	2023-09-30	7.013	0.178	1984-08-28	1984-08-28	125.0	2016-01-04	2016-01-04	0.623	2.233	3.97	16.27	23.79	0.43	14883	14883	100.0	1991-01-01		126.65	56.9	261.6	397.0	583.5	866.6	1489	1326	0.3223	0.0032	0.2565	0.4041		0.224	0.0025	0.2654	0.4949	0.0003			1.0		0.0069		0.5985	0.65	0.437	0.929	147.0	39.88	39.7	53.3	9.3	35.28	18.02	408	71	0.07	56.9	210.72	0.463	0.89	0.0335	0.0001			0.0001					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural catchment in the Grampians. Replacement for 15017.	Velocity area station, 30m wide. Supersedes Ballinloan (15017) 5km u/s (197 sq.km). Station added to peak flows dataset in August 2021 (WINFAP Files v10).	Cableway present. Flows fully contained, gauged to the median annual flood, approx 120 cumecs. The low flow control, a derelict stone weir, is sometimes altered by children. Site prone to ice issues during periods of low temperatures.	Dec 2010 flows severely affected by ice and should be treated with caution.	Catchment is in the Grampians (rising up to > 800m) and has steep or moderate slopes. Metamorphic bedrock geology with just over half overlain by superficial deposits. Mainly open moorland with rough grazing; some forestry.	Flows are natural.
15024	Dochart at Killin	239.0	NN5640131995	256401.0	731995.0	56°27'29.3836"N 4°19'54.7558"W	56.45816	-4.33188	Dochart	Killin	129.8	SEPA-NE	14933	15	1983-01-01		VA			9.8	true	false	false	false	false	false	false	true	false	false	false	false	false	I	1982-01-01	2023-09-30	15.85	0.282	1983-08-15	1983-08-15	244.8	1990-02-04	1990-02-04	1.349	4.093	7.937	40.18	55.98	0.26	15248	15248	100.0				124.1	189.9	441.1	706.2	1170.3	2413	2522	0.1468	0.0002	0.4033	0.4339	0.0008	0.1704	0.0016	0.5032	0.3175	0.0007			0.917	0.083			0.5415	0.79	0.403	0.932	232.8	47.94	59.8	85.7	11.8	40.32	20.42	443	104	0.05	124.2	232.57	1.268	0.819	0.0509	0.0			0.0002					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a mountainous catchment. Some exports of flow for HEP.	Velocity area station, 35m wide.	Cableway present. Stable bedrock control; sharp fall in bed level d/s of station, culminating in the Dochart Falls. Flows contained to median annual flood, greater flows extend onto l.b. floodplain, over 1 in 50 flows extend over both banks.	Extreme low temperatures can cause ice build up and hence erroneous flows, e.g. Jan 1982.	A mountainous, steeply sloping catchment. Bedrock predominantly metamorphic over half of is overlain by superficial deposits. Land use mainly rough grazing on open moorland with some forestry at the head of the catchment and along the valley bottom. Adjacent to the IH experimental Balquhidder catchments.	Some exports to the Loch Lyon system for HEP.
15025	Ericht at Craighall	432.0	NO1740547165	317405.0	747165.0	56°36'32.6086"N 3°20'49.8329"W	56.60906	-3.34718	Ericht	Craighall	76.2	SEPA-NE	14956	15	1984-01-01		VA			9.1	true	true	true	true	false	false	true	true	false	false	false	false	false	N	1985-01-01	2023-09-30	13.017	0.962	1995-08-17	1995-08-17	231.9	2016-01-03	2016-01-03	2.071	5.214	8.264	28.47	40.05	0.47	14152	14152	100.0	1984-10-01		194.0	73.3	250.5	423.6	707.4	1105.6	1242	1130	0.1607	0.0101	0.3145	0.5091	0.0001	0.1183	0.0071	0.3176	0.5537	0.0009		0.0258	0.8904	0.0838	0.0503	0.0198	0.5847	0.55	0.489	0.989	173.0	39.09	38.2	51.7	8.6	46.6	29.24	452	168	0.12	73.3	437.4	0.55	0.83	0.0385	0.0003			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural catchment. Ice build up can occur at the station.	Velocity area station, 46m wide. Stable bedrock control. Station added to peak flows dataset in August 2024 (WINFAP Files v13).	Cableway present. All flows contained, rating curve well defined. Multiple peak flow ratings across period of record.	Extreme low temperatures can cause ice build up and hence erroneous flow values, e.g. Dec 2001 - Jan 2002.	Mountainous steeply sloping catchment. Mostly impermeable bedrock, metamorphic, two thirds overlain by superficial deposits. Land use mainly rough grazing with some forestry.	Flows are natural.
15027	Garry Burn at Loakmill	20.0	NO0748033943	307480.0	733943.0	56°29'18.4512"N 3°30'14.7154"W	56.48846	-3.50409	Garry Burn	Loakmill	55.0	SEPA-NE	14939	15	1986-03-04	2011-05-09	VA			35.3	true	false	false	false	false	false	false	false	false	false	false	false	false	I	1987-01-01	2011-05-09	0.419	0.011	1995-08-16	1995-08-17	12.27	1993-01-16	1993-01-16	0.034	0.123	0.232	0.981	1.361	0.45	8895	8895	100.0				55.1	80.9	122.4	315.9	400.3	1046	947	0.1925	0.277	0.3758	0.1137	0.0229	0.0658	0.2666	0.3974	0.2539	0.0164		0.7844	0.2156		0.213		0.4877	0.46	0.574	0.999	110.9	37.07	37.2	48.0	8.7	12.12	5.92	162	132	0.3	55.1	22.57	0.483	0.608	0.0591	0.0069	0.432	0.739	0.0116	0.749	0.421			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; flows are subject to significant abstraction for irrigation.	Velocity area station; 4m wide.	No cableway; high flows gauged from bridge. Low flow control formed from sleepers in a Flat V configuration; bridge is high flow control. Fully gauged.		Moderately sloping catchment rising to 400m. Bedrock metamorphic and ORS; largely overlain by superficial deposits. Land use mixed farming, forest.	Significant abstractions for irrigation.
15028	Ordie Burn at Luncarty	54.0	NO0905031179	309050.0	731179.0	56°27'50.1888"N 3°28'39.4900"W	56.46394	-3.47764	Ordie Burn	Luncarty	25.0	SEPA-NE	14940	15	1985-05-13	2021-09-30	VA			10.7	true	false	false	false	false	false	false	false	false	false	false	false	false	I	1986-01-01	2021-09-30	1.194	0.006	2006-08-13	2006-08-14	37.36	1993-01-16	1993-01-16	0.094	0.358	0.63	2.745	4.04	0.43	13057	13057	100.0				21.5	58.8	112.2	301.9	451.5	1024	933	0.1989	0.3364	0.331	0.1023	0.0091	0.1064	0.3361	0.3423	0.2076	0.0067		0.8508	0.1492		0.1766		0.5787	0.46	0.591	0.991	90.1	36.6	37.2	47.8	8.7	17.09	8.87	146	115	0.33	21.9	57.35	0.49	0.713	0.0551	0.0027			0.0046					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a rural catchment in North East Scotland. Downgraded to level only in October 2021.	Velocity area station 7m wide.	Cableway present until 1996. Old mill weir 1.5m high provides a stable control at all flows; the weir offtake has been closed off. Notch cut into the weir to allow fish passage during February 2006. Fully rated. Major bank erosion noted after high flows in January 2011.	Downgraded to level only in October 2021.	Moderately sloping catchment rising to 450m. Bedrock metamorphic and ORS; mostly overlain by superficial deposits. Land use mixed farming, some forest cover.
15029	Alyth Burn at Pitcrocknie	32.0	NO2571948450	325719.0	748450.0	56°37'19.1723"N 3°12'43.6942"W	56.62199	-3.21214	Alyth Burn	Pitcrocknie	84.4	SEPA-NE		15	1991-04-01	1995-10-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	I	1991-01-01	1994-12-31	0.425	0.014	1994-08-08	1994-08-08	5.785	1993-01-16	1993-01-16	0.042	0.149	0.267	0.981	1.424	0.46	1461	1461	100.0				84.2	131.1	242.1	378.6	463.0	964	920	0.1536	0.1548	0.4689	0.191	0.0202	0.1756	0.0702	0.525	0.2059	0.0227		0.5032	0.4968			0.0528	0.4928	0.46	0.587	1.0	90.5	33.08	34.8	45.4	8.1	17.11	8.79	248	145	0.31	84.5	30.08	0.486	0.763	0.0469	0.0063	0.714	0.157	0.0096	0.771	0.16			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a small catchment in the East Grampians.	Continuous recorder replaced a post gauge in 1991. Ceased recording 31/12/94. Data used for spray irrigation monitoring and pollution control purposes.	Low flow control (ford) removed 1993, making stability and accuracy of data less reliable. High flow control 50m d/s thought to be quite stable.		Catchment drains a narrow valley between the Ericht and Isla in the E Grampians. Bedrock ORS, some extrusives, and Dalradian metamorphics. Land use arable, grazing and forestry.	PWS for Alyth derives from outside the catchment and enters burn via STW immediately d/s of station. Agricultural abstractions are relatively minor.
15030	Dean Water at Dean Bridge	230.0	NO2930045815	329300.0	745815.0	56°35'55.9665"N 3°09'11.0564"W	56.59888	-3.15307	Dean Water	Dean Bridge	39.0	SEPA-NE	14946	15	1989-01-01		VA				true	false	false	false	false	false	false	true	false	false	false	false	false		1989-07-14	2023-09-30	3.698	0.37	2018-07-19	2018-07-19	78.41	2016-01-07	2016-01-07	0.702	1.483	2.217	8.118	11.57	0.57	12497	12497	100.0				38.9	54.3	107.8	236.2	454.0	850	823	0.0936	0.5501	0.2442	0.0818	0.0277	0.0873	0.5232	0.2846	0.0721	0.0303		0.9294	0.0706		0.3199		0.5871	0.41	0.631	0.97	61.4	36.2	35.9	46.5	8.1	33.72	18.21	131	344	0.23	38.9	282.42	1.01	0.858	0.1332	0.0077	0.743	1.202	0.0105	0.805	1.168			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a mainly rural catchment; some artificial influences.	Velocity area station 12m wide.	Cableway present.		Gently sloping catchment except for the S which drains N flank of Sidlaw Hills (350m). Bedrock ORS. Land use is mainly arable. Predominantly rural, but urbanised (Forfar) around the head of the main channel.	The town of Forfar discharges treated effluent into Forfar Loch in the upper catchment; this is an import from the Isla catchment.
15032	Ordie Burn at Jackstone	20.0	NO0697333689	306973.0	733689.0	56°29'09.8792"N 3°30'44.0175"W	56.48608	-3.51223	Ordie Burn	Jackstone	50.0	SEPA-NE		15	1990-04-01	1996-12-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	I	1990-01-01	1996-12-31	0.459	0.003	1995-08-17	1995-08-17	19.63	1993-01-16	1993-01-16	0.018	0.087	0.223	1.094	1.609	0.38	2557	2557	100.0				49.5	82.5	156.1	337.8	451.5	1115	994	0.2035	0.3108	0.3329	0.1401		0.0818	0.3354	0.2878	0.2924	0.0003		0.8202	0.1798		0.0708		0.5748	0.47	0.583	0.977	98.1	35.55	38.0	49.2	8.8	11.29	5.91	181	106	0.4	49.9	20.54	0.321	0.631	0.0339	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened to monitor irrigation abstractions; closed in 1997.	Lowland Perthshire station built after 15028 and 15027 to address spray irrigation abstractions specifically within this sub-catchment. From 1997 station abandoned due to unstable control.	Control provided by unstable gravel island under road bridge immediately d/s. Low flows frequently gauged, providing good accuracy; this deteriorates at higher flows. High flows exceed channel capacity but are contained within the bridge.		Gentle topography underlain by ORS and some dykes. Land use mostly arable - cereals, potatoes, berries, with rough grazing at higher levels.
15034	Garry at Killiecrankie	745.0	NN9008063515	290080.0	763515.0	56°45'00.9143"N 3°47'56.7697"W	56.75025	-3.7991	Garry	Killiecrankie	135.0	SEPA-NE	14958	15	1991-01-01		VA			8.2	true	false	false	false	false	false	false	true	false	false	false	false	false		1991-01-01	2023-09-30	17.319	1.982	1996-08-07	1996-08-07	397.0	2008-01-25	2008-01-25	3.368	6.311	9.561	36.45	58.76	0.41	11961	11961	100.0				111.5	327.5	538.7	801.6	1120.3	1459	1362	0.0652	0.0016	0.1249	0.7869	0.0007	0.0603	0.0013	0.1322	0.7966	0.0017			0.9158	0.0842		0.1938	0.2631	0.72	0.429	0.953	180.2	49.31	38.4	53.3	9.5	50.63	25.95	554	157	0.13	111.6	744.22	0.388	0.873	0.0255	0.0004			0.0003					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station used for flood warning on the Tay.	Velocity-area station; 48m wide. Built as part of the Tay Flood Warning Scheme.	Cableway present.	Flash flooding in the catchment can cause isolated peaks in the record, e.g. 2nd of July 2009. Flows in December 2010 and January 2011 should be treated with caution due to severe icing at the station.	Bedrock Moinian and Dalradian Metamorphics. Most of the catchment is steeply sloping, supporting rough grazing and forestry.	66% of the area is severely affected by HEP, with water exported from the catchment.
15035	Tummel at Kinloch Rannoch	647.0	NN6640558723	266405.0	758723.0	56°42'03.7830"N 4°11'00.4765"W	56.70105	-4.18347	Tummel	Kinloch Rannoch	208.0	SEPA-NE	14961	15	1990-04-01	2007-01-01	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	SRH	1991-01-01	2006-12-31	43.767	2.654	1993-05-07	1993-05-07	285.3	2006-12-14	2006-12-14	9.467	21.68	32.99	84.57	92.28	0.56	5844	5843	99.983				204.7	281.5	396.9	682.2	1133.4	1698	1773	0.1461	0.0019	0.1889	0.5645	0.0	0.1695	0.0004	0.2065	0.5405	0.0006			1.0			0.0881	0.6398	0.77	0.364	0.652	140.4	50.69	46.0	67.9	10.6	54.84	27.17	441	123	0.07	204.7	645.81	0.644	1.064	0.0505	0.0001			0.0001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with highly artificial flow regime. Station closed in 2006.	Flood warning station installed after Feb 1990 flood. Deep channel with smooth flow and natural control. Station closed during 2006.	Cableway present.		A mountainous catchment with rough grazing and some forestry. Bedrock mostly metamorphic, granite in SW.	Flow from Loch Rannoch u/s is regulated for supply to Tummel Power Station, hydrograph therefore highly artificial. Most of catchment drains through regulated Lochs Ericht and Eigheach. Also receives diverted flow from Garry and right-bank Spey tributaries. Small diversion out of catchment to Loch Errochty.
15038	Gaur at Bridge of Gaur	247.0	NN4968656965	249686.0	756965.0	56°40'48.6843"N 4°27'18.7976"W	56.68019	-4.45522	Gaur	Bridge of Gaur	204.7	SEPA-NE	14962	15	1991-04-01	2007-01	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1992-01-01	2007-12-31	14.498	0.312	1995-08-30	1995-08-30	256.7	1993-01-16	1993-01-16	1.246	3.072	8.068	31.7	42.88	0.33	5844	5844	100.0				207.3	289.2	348.8	623.8	1106.4	1975	2021	0.1235	0.0006	0.3016	0.5048	0.0001	0.1487	0.0002	0.2207	0.5841	0.0005			1.0			0.0523	0.7083	0.8	0.328	0.721	116.1	51.69	50.0	74.2	11.0	37.11	17.54	401	115	0.06	207.5	250.29	1.016	0.969	0.0827	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in the Tummel headwaters; flow regime dominated by power station discharge.	Flood warning station in Tummel headwaters. Stable section on gentle right-hand bend, with large boulders protruding from gravel bed. Station closed during 2006.	Cableway present. Large floods contained.		Catchment covers Rannoch Moor and surrounding mountains (>1000m). Impermeable bedrock geology (mostly granitic); mostly overlain by superficial deposits. Small part of the catchment is afforested.	Flow is dominated by discharge from Gaur Power Station immediately u/s, however, no imports or exports so runoff volumes unaffected by HEP.
15039	Tilt at Marble Lodge	165.0	NN8922771575	289227.0	771575.0	56°49'20.7224"N 3°48'59.5419"W	56.82242	-3.81654	Tilt	Marble Lodge	237.6	SEPA-NE	14959	15	1992-01-01		VA			10.8	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1992-01-01	2023-09-30	7.179	0.868	2003-09-05	2003-09-05	127.6	2015-12-04	2015-12-04	1.416	2.794	4.173	15.88	23.88	0.4	11596	11596	100.0				238.2	497.8	680.4	849.8	1120.3	1586	1316	0.0135		0.0871	0.8898		0.0072	0.0004	0.0499	0.9398	0.0			0.8667	0.1333		0.1984	0.1597	0.71	0.432	0.988	246.6	50.24	38.8	53.1	9.1	34.38	17.92	675	190	0.05	238.2	166.44	0.22	0.967	0.0132	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural, upland catchment draining the Grampians.	Velocity area station in a straight reach 17m wide.	Cableway present. Separate low and high flow controls are shoals and rock steps, respectively. Steep rb extends up a hillside; lb contains gauge hut and access road. All flows contained.		Upland catchment. Bedrock Moinian and Dalradian Metamorphics partially overlain by peat and boulder clay. Land use: predominantly rough grazing.	Natural catchment. Rainfall may be underestimated.
15041	Lyon at Camusvrachan	237.0	NN6195247654	261952.0	747654.0	56°36'01.4100"N 4°15'00.7183"W	56.60039	-4.2502	Lyon	Camusvrachan	184.6	SEPA-NE	14950	15	1991-04-01	2009-06-09	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	R	1992-01-01	2009-12-31	6.83	1.484	1994-07-23	1994-07-23	290.4	2006-12-13	2006-12-13	2.227	3.228	4.267	13.2	19.79	0.46	6575	6575	100.0				183.3	343.5	578.4	792.1	1079.2	2257	2256	0.0277	0.0017	0.2913	0.6172	0.0006	0.0422	0.0003	0.3871	0.537	0.0001			0.9781	0.0219		0.0078	0.5138	0.78	0.414	0.855	267.3	49.22	54.7	79.2	11.4	38.0	19.69	569	78	0.07	183.3	237.55	0.633	0.744	0.0285	0.0			0.0001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a steep wet mountainous catchment. Artificial flow regime.	Velocity area station on straight, deep reach with very smooth flow. Station closed during 2009.	Minor bypassing in very high floods. Stable natural control, though d/s bridge may take effect in extreme floods. Gauged by wading u/s and with cableway.		Steep, wet mountain catchment with only sparse settlement, mostly rough grazing with a little forestry. Mixed metamorphic geology.	Imports from Orchy, Lochay and Dochart catchments, and exports to Cashlie and Lochay Power Stations. Station therefore measures compensation flows and runoff from part of natural catchment below Loch an Daimh and Stronuich Reservoir.
15046	Garry Burn at Loakmill	22.25	NO072343	307200.0	734300.0	56°29'29.7948"N 3°30'31.5368"W	56.49161	-3.50876	Garry Burn	Loakmill		SEPA-NE	474477	15	2010-04		VA				true	false	false	false	false	false	false	true	false	false	false	false	false	I	2010-04-23	2023-09-30	0.381	0.009	2013-09-05	2013-09-05	6.289	2010-09-29	2010-09-29	0.045	0.125	0.22	0.858	1.266	0.47	4909	4636	94.439				59.1	81.9	123.9	316.9	400.3	1049	949	0.1939	0.2751	0.377	0.1154	0.0232	0.0659	0.261	0.3987	0.2578	0.0166		0.7812	0.2188		0.213		0.4833	0.46	0.574	0.999	111.4	37.0	37.3	48.0	8.8	11.69	5.55	163	131	0.31	59.1	22.25	0.475	0.583	0.0588	0.007	0.432	0.713	0.0117	0.75	0.376			gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened as a replacement for 15027.	Station opened in 2010 as a replacement for 15027, 500m d/s.	An artificially straight channel, high concrete walls mean it is generally well contained. Possibly some bypassing during July 2015 high flows.		Moderately sloping catchment rising to 400m. Bedrock metamorphic and ORS; approx. 70% overlain by superficial deposits. Land use mixed farming, forest.	Small influence of effluent on flow regime.
16001	Earn at Kinkell Bridge	590.5	NN9331316652	293313.0	716652.0	56°19'48.6735"N 3°43'37.1747"W	56.33019	-3.72699	Earn	Kinkell Bridge	15.3	SEPA-NE	14968	16	1951-01-01		VA	147.7		7.6	true	true	true	true	false	true	false	true	true	true	false	false	true	PH	1948-01-01	2023-09-30	22.771	0.722	1955-08-06	1955-08-06	305.3	1948-02-02	1948-02-02	3.107	9.204	15.5	49.53	65.45	0.51	27667	27667	100.0	1948-11-09		203.985	18.7	58.4	304.2	600.8	978.6	1531	1505	0.146	0.1049	0.3786	0.3296	0.0121	0.1277	0.0867	0.3999	0.3533	0.0074		0.3658	0.6244	0.0098	0.0386	0.0233	0.5567	0.63	0.487	0.894	177.2	41.12	45.9	63.4	9.8	55.58	31.18	315	140	0.11	18.7	584.66	0.729	0.722	0.056	0.0017			0.0025					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station draining the southern Grampians. A third of the catchment is controlled for HEP.	Velocity area station, about 35m wide.	Cableway present, natural control. An allowance is made for any high flows which bypass gauged section on lb above about 2.2m. Weed growth can be a problem at low flows. Ratings derived from current meter gaugings up to 3.2m (about 1.2QMED), simple extrapolation beyond. Hydraulic reconstruction of largest event (1993) to check maximum extent of rating curves.	Monthly naturalised flows available 1963-1987.	Drains the southern Grampians; mountainous, often snowy in winter. Steep slopes plus extensive flatter areas in lower parts. Metamorphic bedrock in west, sandstone elsewhere with superficial deposits in valley. Mixed agricultural use in east; forestry and rough grazing in west. Notable floodplains with some agricultural flood embankments. HEP has developed within the catchment.	189 sq km (32%) of the catchment has been controlled for hydroelectric power since 1958. Loch Earn direct (1958) catchment 122.51 sq km, reservoir diversion capacity 16.1 cumecs. Loch Lednock direct (1957) catchment 19.2 sq km, reservoir diversion capacity 10.5 cumecs. Loch Turret is used for public water supply. Import of water from Tay catchment into Lednock Reservoir.
16002	Earn at Aberuchill	176.9	NN7538321661	275383.0	721661.0	56°22'14.8122"N 4°01'08.9539"W	56.37078	-4.01915	Earn	Aberuchill	62.2	SEPA-NE		16	1955-01-01	1977-01-01	VA			12.1	true	false	false	false	false	false	false	false	false	false	false	false	false	H	1955-10-01	1977-12-31	10.152	0.756	1957-06-29	1957-06-29	69.34	1960-02-03	1960-02-03	1.265	3.861	8.196	24.16	27.64	0.47	8128	8128	100.0				63.1	106.1	402.7	604.0	974.7	1743	1744	0.1696	0.0003	0.3617	0.4024	0.0013	0.1723	0.0015	0.3956	0.3743	0.0009			0.9676	0.0324		0.0157	0.4969	0.66	0.447	0.781	236.3	42.79	48.5	68.1	10.3	28.93	16.78	384	102	0.08	63.1	177.07	0.388	0.661	0.0275	0.0002			0.0003					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station closed in December 1977.	Velocity area station located one mile upstream of Ross Bridge, Comrie. Station closed in December 1977. Station re-opened in 1991 but as level only for flood warning so no flow data are held on the NRFA for this period.				Around 40% of the catchment is controlled for HEP.
16003	Ruchill Water at Cultybraggan	99.5	NN7644120399	276441.0	720399.0	56°21'35.0201"N 4°00'05.1930"W	56.35973	-4.00144	Ruchill Water	Cultybraggan	62.3	SEPA-NE	14965	16	1970-01-01		VA	159.4		15.2	true	true	false	true	false	false	true	true	true	true	true	false	true	N	1970-10-01	2023-09-30	5.301	0.094	1984-08-28	1984-08-28	123.9	1993-01-16	1993-01-16	0.415	1.327	2.473	13.18	20.01	0.28	19358	19357	99.995	1959-06-01		158.758	66.5	193.3	384.4	598.0	978.6	1924	1888	0.0668	0.0054	0.432	0.4877	0.0017	0.0274	0.0064	0.4192	0.5468	0.0001		0.4306	0.5694		0.0045	0.1074	0.5381	0.59	0.433	1.0	215.2	44.13	52.3	73.1	10.8	22.6	12.57	395	56	0.14	66.6	101.07	0.493	0.742	0.0346	0.0001			0.0			1959..1969	1959-10-01..1970-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a mountainous catchment.	Velocity area station, about 20m wide. Left bank = 2.5m high, Right bank = 3.5m high.	Cableway present. Natural control. All flows contained to date. Flashiness and remoteness hinder flood gauging. Multiple peak flow ratings across period of record up to ~2.5m, simple extrapolation beyond.	Early peak flow data rejected due to uncertainty in rating. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A mountainous catchment with steep slopes, often snowy in winter. Main channel follows a major geological fault, the geology consists of sandstone to its south, metamorphic to its north. More than half is overlain by Boulder Clay. Thick peat on the flatter hill tops. Land is used mainly for rough grazing and army ranges; some woodland. No significant catchment changes known.	Natural regime.
16004	Earn at Forteviot Bridge	782.2	NO0440118327	304401.0	718327.0	56°20'51.3579"N 3°32'54.0943"W	56.3476	-3.54836	Earn	Forteviot Bridge	8.0	SEPA-NE	14970	16	1972-01-01		VA	130.0		6.1	true	true	true	true	false	false	false	true	false	false	true	false	false	PH	1972-10-01	2023-09-30	29.513	1.58	2022-08-13	2022-08-13	356.4	2015-12-05	2015-12-05	3.904	11.01	19.29	66.17	88.24	0.52	18627	18627	100.0	1972-10-01		249.2	5.7	48.9	230.7	572.3	978.6	1417	1404	0.1436	0.1634	0.3867	0.266	0.0174	0.1338	0.1299	0.4133	0.2934	0.0107		0.4632	0.5295	0.0073	0.0645	0.0201	0.556	0.59	0.51	0.917	155.5	39.91	43.8	60.3	9.5	71.5	39.58	274	87	0.07	5.7	783.9	0.825	0.777	0.0611	0.0019			0.0034					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the most downstream on the Earn. Part of the catchment is controlled for HEP.	Velocity area station, 50m wide. Station rebuilt with cableway in 1991.	Bridge forms control. Cableway too close to the bridge resulting in operational difficulties. Floods above 2.8m) bypass station on rb. Ratings derived from current meter gaugings up to 2.8m (about 1.1QMED), simple extrapolation beyond. Bridge piers were strengthened and widened around February 2008, resulting in change in rating. Peak flows beyond 2007 to be provided in due course.	Naturalised monthly flows available from 1975-1985. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Catchment draining southern Grampians, rising to >950m; mountainous headwaters, often snowy in winter. Steep slopes plus extensive flatter areas in lower catchment and some agricultural flood embankments. Metamorphic bedrock dominant in the west, sandstones in the east. Substantial superficial deposits, mainly boulder clay, along the valley. Mixed agricultural use in lowland east, rough grazing in west and some forest cover. Notable floodplains. No significant catchment changes known.	189 sq km (24%) of the catchment is controlled for hydroelectric power. Loch Turret is used for public water supply. Import of water from Tay catchment into Lednock Reservoir. Loch Earn (1958) direct catchment 122.51 sq km, reservoir diversion capacity 16.1 cumecs. Loch Lednock (1957) direct catchment 19.2 sq km, reservoir diversion capacity 10.5 cumecs.
16007	Ruthven Water at Aberuthven	50.0	NN9750815379	297508.0	715379.0	56°19'10.8547"N 3°39'31.2697"W	56.31968	-3.65869	Ruthven Water	Aberuthven	25.2	SEPA-NE	14969	16	1989-01-01		VA			15.9	true	false	false	false	false	false	false	true	false	false	false	false	false	E	1990-01-01	2023-09-30	1.368	0.107	1991-08-26	1991-08-26	30.14	2009-11-19	2009-11-19	0.259	0.519	0.808	2.976	4.33	0.51	12326	12326	100.0				26.6	74.6	220.3	421.2	492.7	1237	1243	0.115	0.1591	0.6086	0.0594	0.0447	0.1369	0.0958	0.6235	0.1127	0.0309		0.4073	0.5927		0.1483		0.3844	0.58	0.581	0.988	152.1	34.92	38.3	52.5	9.1	15.06	8.48	239	349	0.32	26.6	48.09	0.335	0.665	0.0304	0.0054	0.506	0.627	0.0133	0.713	0.707			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a mainly low-lying catchment.	Velocity-area station 9m wide.	Cableway present. Large floods bypass the station.		Mostly low-lying catchment draining N side of the Ochil Hills. Bedrock Lower ORS, over 55% of which is overlain by superficial deposits. Land use mixed grazing and arable, some forest.	Water imported through STW at Gleneagles and Auchterarder.
17001	Carron at Headswood	122.3	NS8318081818	283180.0	681818.0	56°00'54.0031"N 3°52'31.6446"W	56.015	-3.87546	Carron	Headswood	17.8	SEPA-SE	14886	17	1969-01-01		FV	150.0		22.5	true	true	true	true	false	false	false	true	false	false	false	false	false	SE	1969-08-01	2023-09-30	3.561	0.183	1986-09-01	1986-09-01	121.1	1994-12-11	1994-12-11	0.61	0.981	1.578	8.748	13.25	0.34	19784	19570	98.918	1968-10-01		77.786	19.3	80.2	246.6	395.1	561.9	1472	1519	0.2677	0.0546	0.3711	0.2126	0.0382	0.2717	0.0389	0.3841	0.2367	0.0233	0.1809		0.8191		0.0242	0.1074	0.5932	0.59	0.378	0.843	98.8	44.19	43.9	62.1	10.2	27.98	14.47	244	78	0.24	19.3	121.14	0.497	0.759	0.0404	0.0097	0.727	0.255	0.0133	0.806	0.275	1968..1987	1968-10-01..1988-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir with flows affected by the Carron Valley Reservoir.	Flat V weir installed in Oct 1988 in an artificial meander cutoff. Straight, uniform channel (concrete walls) lined with gabions; banks are steep to 2.0m. Previously velocity-area station: instability in rating caused by d/s deposition.	Prior to weir installation in October 1988, the high flow control was probably d/s bridge, but deposition caused problems. After the weir installation: up to 1.4m stage the flow is modular. Non-modular flow sets in somewhere above this level though not precisely known, partly due to occasional dredging of d/s deposition. Peak flow rating derived from gaugings up to 2.3m.	Flows pre October 1988 are not fit for flood estimation and are therefore rejected. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and August 2021 (WINFAP Files v10).	The upper part of the catchment drains part of the Campsie Fells. Bedrock composed of igneous rocks in headwaters and Carboniferous rocks in the valley; predominantly overlain by superficial deposits. Land use predominantly moorland and plantation forestry in headwaters, pasture in lower reaches. Minimal floodplains. No significant catchment changes known.	Flashy response. Catchment contains Carron Valley Reservoir, which pre-dates gauge. Export of water and operation of reservoir can significantly influence flow patterns. Influence of effluent return to Endrick Water on floods is negligible.
17002	Leven at Leven	424.0	NO3689000546	336890.0	700546.0	56°11'35.9805"N 3°01'06.8200"W	56.19333	-3.01856	Leven	Leven	8.7	SEPA-SE	14893	17	1969-08-01	2000-12-31	VA	660.0		8.3	true	false	false	false	false	false	false	false	false	false	false	false	false	SREI	1969-08-01	2000-12-31	6.447	0.403	1974-07-27	1974-07-27	103.5	1977-02-10	1977-02-10	1.12	2.651	4.663	13.63	17.74	0.68	11476	11476	100.0				5.8	70.5	128.9	274.0	520.4	951	947	0.1345	0.3243	0.3569	0.0292	0.0987	0.1261	0.2793	0.4404	0.0394	0.0691	0.5975	0.0473	0.3552		0.1882	0.0308	0.5616	0.45	0.511	0.824	62.9	34.63	35.5	47.1	8.8	48.68	26.89	151	123	0.22	5.9	416.53	0.841	0.957	0.1008	0.0173	0.754	0.74	0.036	0.83	0.703			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in Scotland. Flows affected by lochs within the catchment.	Velocity area station on a straight reach with artificially heightened and steeped banks. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	The control was formerly a gravel bar, in Sep 1977 stabilised with gabions to form an irregular broad-crested weir. Possible movement in control, evident at low flows. Weir is thought to be modular throughout range. All flows contained to date. Peak flow rating derived from current meter gaugings up to 1.6m (about QMED), simple extrapolation beyond.		Mostly low-lying catchment. Bedrock predominantly Carboniferous rocks; predominately overlain by superficial deposits. Land use lowland arable farming, and forest with significant urbanisation. Minimal floodplains. No significant catchment changes known.	Relatively un-flashy. There are a number of small storage reservoirs in the catchment plus Loch Leven whose outflow is controlled by sluice gates (these can produce seemingly anomalous flow hydrographs). Effluent return and industrial/agricultural abstractions probably don't significantly influence flood peaks.
17003	Bonny Water at Bonnybridge	50.5	NS8242180371	282421.0	680371.0	56°00'06.5571"N 3°53'13.1662"W	56.00182	-3.88699	Bonny Water	Bonnybridge	23.0	SEPA-SE	14885	17	1972-01-01		VA				true	true	true	true	false	false	false	true	false	false	false	false	false	EI	1965-01-01	2023-09-30	1.307	0.089	1992-07-01	1992-07-01	34.66	1994-12-11	1994-12-11	0.298	0.564	0.798	2.757	4.021	0.48	21457	21455	99.991	1965-01-01		21.153	21.4	51.5	110.2	167.8	352.0	1148	1160	0.1448	0.0825	0.4608	0.1132	0.189	0.1791	0.0682	0.4912	0.0803	0.1794	0.9258	0.0623	0.0119		0.1301	0.0956	0.7677	0.58	0.435	0.995	58.5	40.58	37.8	51.1	8.8	16.22	7.77	111	354	0.15	21.6	51.49	5.247	1.122	0.0867	0.0614	0.636	0.976	0.0941	0.804	1.057			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a lowland catchment.	Open river section. Station added to peak flows dataset in September 2023 (WINFAP Files v12).	Fairly stable gravel bar low flow control. Archive notes state: congestion by aquatic weeds in summer necessitates correction to recorded stage. However, stage correction is no longer practiced at SEPA. High flows largely contained. Gauged to 1.989m, with a measured flow of 26.2 cumecs. Four peak flow ratings across period of record. Floodplain at 2.1m on left bank.		Lowland catchment. Bedrock Carboniferous rocks with igneous intrusions; almost entirely covered by superficial deposits, mainly boulder clay. Land use: predominantly grassland, forest, and arable with urban development at Cumbernauld in the headwaters.	Low flows influenced by diurnal fluctuations caused by Dunswood WWTW discharge at Cumbernauld.
17004	Ore at Balfour Mains	162.0	NT3296599649	332965.0	699649.0	56°11'05.0395"N 3°04'53.6542"W	56.18473	-3.08157	Ore	Balfour Mains	23.0	SEPA-SE	14894	17	1973-01-01		VA	26.34			true	true	true	true	false	false	false	true	false	false	false	false	false	EI	1972-12-01	2019-09-30	2.198	0.093	1973-08-21	1973-08-21	44.56	1977-02-10	1977-02-10	0.396	0.904	1.408	4.757	6.747	0.54	17105	17105	100.0	1993-10-01		21.499	27.2	60.9	116.2	207.6	356.7	883	874	0.171	0.2869	0.345	0.0223	0.1383	0.148	0.2738	0.4221	0.046	0.0914	0.8272	0.0651	0.1077		0.0105	0.0643	0.8498	0.45	0.359	0.905	54.2	41.73	33.9	44.7	8.7	39.89	19.9	125	96	0.17	27.4	159.19	0.714	0.857	0.0859	0.0211	0.761	1.037	0.0484	0.837	0.835			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a lowland catchment with some urban land use.	Open river section. A railway embankment forms the rb, whilst the lb is steep to the floodplain at 1.6m. Station added to peak flows dataset in August 2021 (WINFAP Files v10).	Stable rock bar low flow control, has shown instability at right bank. Although an open channel, the gradual growth and capsizing of a tree just downstream of the station is a key factor in understanding the stage-discharge relationship. Its evolution is pretty well documented by pictures. Its size and extent to which it slumps in the channel increases through the station period of record until it collapses completely and falls into the channel in February 2020. The impact of the tree is evident in the ratings from 2012, where the second segment parameters are not typical of open channel hydraulics. Two peak flow ratings across period of record.	May 1994 flows affected by work at the Loch Fitty outlet. Record frozen after 30/09/2019 due to tree fall onto station control. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Lowland catchment in the coal mining area of W Fife. Bedrock Carboniferous rocks, >90% overlain by superficial deposits, mainly boulder clay. Land use predominantly grassland, forest, and arable with urban development.	Low flows moderately affected by pumping from collieries.
17005	Avon at Polmonthill	195.3	NS9519479657	295194.0	679657.0	55°59'54.1415"N 3°40'55.1957"W	55.99837	-3.682	Avon	Polmonthill	4.3	SEPA-SE	14884	17	1972-01-01		VA	138.68			true	true	false	true	false	false	true	true	true	true	false	false	true	EI	1965-01-02	2023-09-30	4.184	0.015	2003-09-28	2003-09-28	130.8	1994-12-11	1994-12-11	0.691	1.339	2.151	9.818	15.0	0.41	21456	21456	100.0	1971-07-01		78.987	4.4	81.0	168.1	218.7	310.7	990	990	0.1218	0.1811	0.4723	0.0978	0.1047	0.115	0.1193	0.5783	0.1111	0.0659	0.2404	0.5292	0.2304		0.0972	0.1214	0.6725	0.56	0.411	0.964	56.5	40.3	35.5	46.8	8.8	41.79	22.22	161	28	0.11	4.4	194.81	0.809	1.014	0.0793	0.0189	0.653	0.812	0.0362	0.786	0.857	1970..1998	1970-10-01..1999-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Flows affected by some storage in reservoirs and industrial and agricultural abstractions.	Velocity area station; the river takes a sharp left turn u/s at a site of river capture.	Archive notes state the low flow control was an unstable gravel control 40m d/s; replaced by gabion weir in Aug 1989. It was subsequently capped with concrete and the upstream face lined with sheet piling; this was completed on the Sept 1995. High flow control was a small island in mid-channel immediately below station; now it is probably the channel bend d/s. Following a full review of ratings in 2021, it is suspected that the stage discharge relation is complex. The random scatter of available flood gaugings suggests the site is affected by variable tidal states, being so near to the Firth of Forth, assuming the weirs between the station and river mouth are drowned out. There is very poor confidence in the flood estimates from this site and especially during the early period before the gabion weir was built on 01/08/89 as tidal influence will likely have been more pronounced in this early period. Flows in the period between the gabion weir build up to the upgrade to the concrete design (01/08/89 to a date between 1995 and 1999) will likely be a period of relatively lower confidence considering the typical poor performance of gabion weirs. The exact date of the weir rebuild has yet to be confirmed as different dates exist in the records ranging from 01/10/1995 to 01/01/1999. The pre 1999 records have been rejected until the all the pre digital information is available to allow a thorough assessment of this early period. The banks have contained all recorded flows. It has tentatively been kept in Peak Flows as a QMED only site.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8), and in September 2022 (WINFAP Files v11).	Lowland catchment. Bedrock Carboniferous sedimentaries; predominantly overlain by superficial deposits, mainly boulder clay. The catchment is predominantly rural; grassland, arable and forest landuse dominate, with a few small former coal-mining towns. No significant catchment changes known.	Extensive moorland drainage schemes in headwaters. Industrial and agricultural abstractions. Low flows are moderately affected by effluent discharges. Some storage in Linlithgow, Lochcota and Forrestburn Reservoirs and Loch Ellrig.
17008	South Queich at Kinross	33.6	NO1180901570	311809.0	701570.0	56°11'54.7292"N 3°25'22.5968"W	56.19854	-3.42294	South Queich	Kinross	108.2	SEPA-SE	14903	17	1967-01-01		VA	104.92			true	false	false	false	false	false	false	true	false	false	false	false	false	N	1988-01-01	2023-09-30	0.957	0.0	2020-05-29	2020-06-26	47.8	1993-01-16	1993-01-16	0.128	0.315	0.534	2.073	3.099	0.45	13057	11569	88.604				108.5	124.7	162.2	357.7	490.3	1128	1167	0.1127	0.3399	0.4843	0.0374	0.0174	0.1421	0.2413	0.5885	0.0109	0.015	0.1236		0.8764		0.3156		0.2974	0.45	0.578	0.997	90.7	33.15	39.3	53.2	9.0	17.43	8.0	205	106	0.3	108.8	34.72	1.025	0.568	0.1292	0.0021	0.038	0.017	0.0026	0.045	0.016			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station upstream of Loch Leven.	Velocity area station u/s of a road bridge.	Stable control. All recorded flows contained. Not rated at high flow (typical high flows probably accurate to within 20%). Natural flows (apart from effect of agricultural drainage).		Mostly low-lying catchment. Bedrock 85% impermeable bedrock with approx. 60% overlain by superficial deposits. Rural catchment; grassland, arable (>30%) and forest landuse.	Previously contained sand and gravel workings though these had a minor influence.
17012	Red Burn at Castlecary	22.0	NS7879478013	278794.0	678013.0	55°58'47.0795"N 3°56'38.5802"W	55.97974	-3.94405	Red Burn	Castlecary	45.0	SEPA-SE		17	1977-01-01	2009-12-31	VA	37.1			true	false	false	false	false	false	false	false	false	false	false	false	false	E	1986-03-01	2009-12-31	0.671	0.065	2004-06-06	2004-06-06	29.62	1994-12-10	1994-12-10	0.117	0.213	0.34	1.515	2.358	0.34	8707	8230	94.522				48.0	90.9	131.0	169.6	183.9	1134	1172	0.1846	0.0156	0.3784	0.1585	0.2517	0.2342	0.014	0.3398	0.141	0.271	0.974	0.026				0.2033	0.7967	0.58	0.329	0.995	55.4	42.45	37.4	49.5	8.8	9.89	5.07	130	325	0.19	48.0	21.7	11.6	1.208	0.1097	0.0761	0.655	0.974	0.1391	0.846	0.963			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station upstream of the confluence with the Bonny Water.	Velocity area station.	Low flow control is a gravel bar 20m d/s. Large boulders probably form high flow control. The section will probably contain all flows.		A gently sloping catchment rising to ~185m. Bedrock entirely Carboniferous with extensive Boulder Clay cover. Land use mixed agriculture, grassland and forest except for ~15% covered by Cumbernauld New Town. There are two small lochs in the southern headwaters.	At Q95 flow STW discharges account for half of the flow.
17015	North Queich at Lathro	23.1	NO1150304113	311503.0	704113.0	56°13'16.7491"N 3°25'43.4027"W	56.22132	-3.42872	North Queich	Lathro	114.1	SEPA-SE	14902	17	1983-01-01		VA				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1987-01-01	2023-09-30	0.724	0.026	2022-07-16	2022-07-21	21.66	1993-01-16	1993-01-16	0.082	0.229	0.405	1.681	2.48	0.43	13422	13421	99.993				114.0	129.8	253.6	377.2	492.3	1175	1202	0.1968	0.2568	0.5032	0.0192	0.0173	0.1999	0.1755	0.5946	0.0251	0.0041	0.0323		0.9677		0.0687		0.3872	0.45	0.557	1.0	100.5	33.33	39.7	54.3	9.3	13.07	8.05	249	133	0.44	114.0	24.6	0.647	0.54	0.0754	0.0005			0.0014					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station upstream of Loch leven installed to assess loch inflows.	Velocity area station.	Fairly stable control dominated by sharp bend d/s of station. Not gauged accurately at high flows.		Relatively low-lying catchment. Mostly impermeable bedrock with ~45% overlain by superficial deposits. Mainly arable catchment with some sheep farming on the higher ground; ~20% forest.	Flows are natural.
17016	Lochty Burn at Whinnyhall	14.0	NT2202698514	322026.0	698514.0	56°10'22.3361"N 3°15'26.7405"W	56.17287	-3.25743	Lochty Burn	Whinnyhall	75.6	SEPA-SE		17	1980-01-01	2009-12-31	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1986-01-01	2009-12-31	0.209	0.0	2004-04-30	2004-04-30	4.313	2002-10-22	2002-10-22	0.027	0.108	0.151	0.398	0.548	0.53	8766	7946	90.646				72.9	83.8	110.3	165.9	336.5	885	868	0.0275	0.298	0.3788	0.022	0.114	0.0381	0.1526	0.5181	0.2022	0.0486	0.8702		0.1298		0.0052		0.861	0.45	0.369	1.0	60.6	38.71	34.9	46.0	8.7	7.76	3.84	121	109	0.25	72.9	13.6	0.651	0.799	0.1007	0.0028			0.0288	0.846	1.51			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station in the middle of the Leven Catchment. Flows influenced by an opencast mine u/s.	Concrete Flat V weir situated under a bridge which will contain all flows.	Until 1991 the control was a gabion weir 5m d/s of the bridge. The site is immediately d/s of the large Westfield opencast coal mine; this has a significant influence on flows, particularly as a result of gw issuing from breached faults.		Lowland catchment dominated by opencast coal mine u/s of the station. Mostly permeable bedrock with ~85% covered by superficial deposits. Land use grassland, arable, some forest.
17018	Greens Burn at Damleys Cottage	10.5	NO1566304025	315663.0	704025.0	56°13'16.6272"N 3°21'41.8724"W	56.22129	-3.36163	Greens Burn	Damleys Cottage	111.0	SEPA-SE	14912	17	1994-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false		1994-08-02	2023-09-30	0.178	0.005	1997-08-01	1997-08-01	4.516	2012-12-20	2012-12-20	0.032	0.079	0.121	0.357	0.502	0.6	10652	10629	99.784				109.9	118.3	156.7	236.6	432.8	1000	974	0.024	0.5535	0.2051	0.0326	0.1255	0.0202	0.6448	0.3229	0.0054	0.0056	0.8672		0.1328		0.006		0.8464	0.45	0.693	0.995	69.1	25.9	37.3	48.4	8.9	7.71	3.85	169	225	0.36	109.8	10.36	0.602	0.646	0.0775	0.0			0.0018					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station upstream of Loch Leven.	Flat V weir. Upstream of large capacity culvert. Research site, promotion of buffer strips within catchment to reduce the impacts of phosphorous and other nutrient runoff.	Culvert allows weir to operate as control to high level.		Relatively flat lowland catchment intensively farmed below headwaters in the Lomond Hills. Mostly permeable bedrock with ~85% overlain by superficial deposits. Land use arable, grassland, some forest.
18001	Allan Water at Kinbuck	161.0	NN7922505376	279225.0	705376.0	56°13'31.9983"N 3°56'58.3106"W	56.22556	-3.94953	Allan Water	Kinbuck	93.0	SEPA-SE	14890	18	1958-01-01		VA			7.1	true	true	false	true	false	false	true	true	true	true	false	false	true	N	1957-10-01	2023-09-30	5.392	0.245	2022-08-14	2022-08-14	88.23	1993-01-16	1993-01-16	0.857	1.986	3.172	12.29	17.69	0.44	24106	24106	100.0	1957-10-01		68.892	93.7	118.8	226.1	408.4	630.1	1331	1384	0.096	0.1011	0.5192	0.2533	0.0174	0.1272	0.0629	0.4458	0.3558	0.005		0.895	0.105		0.1944	0.1947	0.4428	0.59	0.507	0.974	92.8	41.33	42.9	57.2	9.5	25.81	15.71	245	108	0.05	93.7	160.29	0.891	0.756	0.0758	0.001			0.0015					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station with broadly natural flows.	Velocity area station, stage recorder sited 40m u/s of twin-arch bridge. Station added to peak flows dataset in August 2021 (WINFAP Files v10).	Steep section contains all floods. Bridge acts as control at all stages. Gabions installed in 1980 beneath one arch to stabilise control. Reasonably stable rating, although low flow gaugings and rating segments now influenced by deposition from drain entering between measuring section and main bridge control on right bank.		River flows through broad flat valley. Lateral tributaries drain steep hillsides. Bedrock predominantly ORS; 85% overlain by superficial deposits. Land use predominantly grassland with some arable and forest.	Flows are broadly natural.
18002	Devon at Glenochil	181.0	NS8581596073	285815.0	696073.0	56°08'37.1229"N 3°50'21.4976"W	56.14365	-3.8393	Devon	Glenochil	5.5	SEPA-SE	14891	18	1959-01-01	2021-11-04	VA	59.0		4.3	true	false	false	false	false	false	false	false	false	false	false	false	false	SI	1959-01-01	2021-11-04	4.855	0.468	2003-09-06	2003-09-06	93.61	2009-11-20	2009-11-20	1.056	1.977	2.951	10.14	14.66	0.51	22954	22954	100.0				4.4	42.9	293.0	528.3	720.5	1398	1332	0.112	0.0949	0.6764	0.0726	0.0289	0.1265	0.0518	0.6901	0.0969	0.0268	0.139	0.112	0.749		0.1444	0.0623	0.2954	0.52	0.488	0.935	186.2	40.71	40.8	54.8	9.3	49.24	25.32	288	167	0.11	4.4	178.68	0.717	0.694	0.0589	0.0091	0.692	0.384	0.0112	0.754	0.464			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station located to the NE of Stirling with some influence on low flows from headwater reservoirs. Station closed in Nov 2021.	Natural section with steep banks.	Good stable flood rating. Low flow control is gravel bar under road bridge 100m d/s. Severe weed growth in summer and very low velocities make low flow measurement difficult. RAFT rising air-bubble technique used unsuccessfully.	Station closed in November 2021.	Headwaters are steep; lower valley is broad and very flat. Bedrock extrusive igneous rocks, 50% overlain by superficial deposits. Land use arable in the valley; grassland in headwaters, some forest.	Low flows moderated by Castlehill Res. in headwaters, commissioned in 1977 (prescribed minimum river level).
18003	Teith at Bridge of Teith	517.7	NN7251901136	272519.0	701136.0	56°11'08.6451"N 4°03'20.0685"W	56.18573	-4.05557	Teith	Bridge of Teith	14.8	SEPA-SE	14887	18	1957-01-01		VA	163.0		6.5	true	true	true	true	false	false	false	true	false	false	true	false	false	SPI	1957-01-01	2023-09-30	24.367	2.01	2005-08-08	2005-08-08	315.6	2015-12-05	2015-12-05	4.223	8.663	14.33	57.72	80.62	0.44	24379	24379	100.0	1939-10-10		224.8	16.1	112.5	321.9	608.8	1160.3	2011	2001	0.1777	0.0033	0.4004	0.3554	0.0048	0.2297	0.0057	0.4337	0.2774	0.003		0.1954	0.7981	0.0065	0.0284	0.0433	0.5025	0.67	0.458	0.755	234.3	41.58	50.6	72.2	10.7	59.75	33.18	338	151	0.12	16.2	515.61	0.695	0.792	0.0387	0.0002			0.0011					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station located upstream of Stirling with headwaters in the Loch Lomond and The Trossachs National Park.	Well sited station on straight, natural river section 70m wide. On 06/06/1956 recorder was moved d/s to its current position. An earlier station by the same name existed somewhere upstream from 1939. SEPA holds copies of the chart record from this earlier station but has no details of the exact location, any gauging history, or rating details from the earlier station. Station added to peak flows dataset in August 2021 (WINFAP Files v10).	Steep banks of ~3m have contained all recorded floods. Low flow control is long gravel riffle: high flow control is channel geometry, including downstream bend and mid-stream island. Station suffers from occasional ice build up. Multiple ratings accross period of record. No gaugings or ratings available for period prior to 01/04/1970.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Catchment rising from near sea level up to ~1150m. Complex bedrock, predominantly impermeable (metamorphic) with approx. 60% superficial deposit cover. Land use mainly grassland and forest. The Teith drains from the Trossachs.	Six large lochs in catchment - some supplying water to Glasgow: flows <75%ile elevated above natural and flows >75%ile are less than expected naturally.
18005	Allan Water at Bridge of Allan	210.0	NS7859197984	278591.0	697984.0	56°09'32.4710"N 3°57'22.9231"W	56.15902	-3.95637	Allan Water	Bridge of Allan	11.2	SEPA-SE	14889	18	1971-07-01		VA	230.0		8.7	true	true	false	true	false	false	false	true	true	false	true	false	false	I	1971-07-01	2023-09-30	6.913	0.529	2022-07-21	2022-07-21	139.3	1993-01-16	1993-01-16	0.984	2.395	4.121	15.95	22.41	0.45	19085	19085	100.0	1996-10-01		76.971	13.5	109.3	207.4	403.9	630.1	1290	1337	0.1205	0.1008	0.5386	0.202	0.0262	0.1486	0.0583	0.4785	0.2949	0.0168		0.8736	0.1264		0.1761	0.1543	0.5057	0.59	0.504	0.976	92.2	42.06	41.5	55.6	9.4	36.91	22.56	232	191	0.05	13.5	209.82	0.866	0.902	0.071	0.0046			0.0061	0.728	0.371			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station useful for flood data north of Stirling.	Flood rating stable but large boulders make gauging a problem at low flows.	Flood rating stable but large boulders make current meter gaugings a problem at low flows. As site is within a caravan park the low flow control is susceptible to rearrangement by children. No longer a caravan park, now a private housing estate, so no access to control. Control is stable.	Although GDF data is available from 1971 the station was impacted by land raising for development on the left bank in 1995 which changed the channel geometry: hence peak flow data only available after 1995. A few (relatively low) peak flow values are actually lower than values at upstream station (Kinbuck, 18001) but effect is attributed to in-channel attenuation as flood volumes at Bridge of Allan are greater. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	The Allan Water occupies a broad flat valley with steep lateral tributaries. Bedrock predominantly Old Red Sandstone; ~85% overlain by superficial deposits. Land use grassland with some arable and forest cover.	Some minor upstream abstractions but natural to within 10% at 95%ile. Upstream quarry and hydroschemes have an effect on flow regime.
18007	Devon at Fossoway Bridge	69.5	NO0117801801	301178.0	701801.0	56°11'54.6743"N 3°35'39.4669"W	56.19852	-3.5943	Devon	Fossoway Bridge	160.1	SEPA-SE		18	1972-01-01	1991-04-30	VA			3.9	true	false	false	false	false	false	false	false	false	false	false	false	false	SR	1986-01-01	1991-04-30	2.144	0.257	1989-09-19	1989-09-19	30.91	1991-01-01	1991-01-01	0.428	0.665	1.119	4.928	6.993	0.5	1946	1946	100.0				160.3	263.6	403.4	549.1	717.0	1666	1575	0.1084	0.0076	0.7106	0.1409	0.004	0.1225	0.0049	0.6728	0.1791	0.0016			1.0		0.0351	0.1289	0.1034	0.56	0.466	0.845	210.3	41.1	44.1	59.8	10.2	20.33	10.26	403	62	0.13	160.9	70.12	0.216	0.675	0.0145	0.0001			0.0003					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station d/s of Castlehill reservoir.	Velocity area station d/s of Castlehill reservoir. Station closed in 1990 and replaced by a new station immediately below the reservoir.	A poor site with an insensitive and unstable broad gravel control and banks which did not contain all flows.		A rural catchment with rolling hills used for sheep grazing.	There are several reservoirs in the catchment.
18008	Leny at Anie	190.0	NN5852309613	258523.0	709613.0	56°15'28.3735"N 4°17'07.4931"W	56.25788	-4.28541	Leny	Anie	120.2	SEPA-SE	14888	18	1974-01-01		VA	127.0		10.2	true	false	false	false	false	false	false	true	false	true	false	false	true	N	1973-11-01	2023-09-30	12.909	0.009	2017-05-11	2017-05-11	150.0	1994-12-11	1994-12-11	0.998	3.989	7.661	31.86	42.75	0.37	18231	17851	97.916				117.7	159.2	415.9	679.4	1160.3	2256	2191	0.1757	0.0047	0.3672	0.4101	0.003	0.2811	0.002	0.3994	0.2905	0.0004			0.9827	0.0173		0.0187	0.4505	0.75	0.462	0.784	305.9	41.7	55.9	82.1	11.3	38.85	21.96	420	115	0.1	117.7	192.41	0.696	0.875	0.038	0.0001			0.0001					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station located in the Loch Lomond and The Trossachs National Park draining steep slopes, with catchment response damped by natural storage lochs.	Well sited station on a natural section of an upland gravel bed river draining steep slopes.	As the site is adjacent to a picnic area the gravel bar low flow control is susceptible to rearrangement by children.No acc ess to picnic area, no rearrangement of gravel bar. Control now stable.		Catchment rising up to ~1150m; rugged topography. Catchment is underlain by metamorphic rocks with igneous intrusions; approx. 50% is overlain by superficial deposits. Land use mostly open heather moorland; some forest.	Catchment response is damped by two large natural storage lochs.
18010	Forth at Gargunnock	397.0	NS7141195258	271411.0	695258.0	56°07'57.5787"N 4°04'14.0572"W	56.13266	-4.07057	Forth	Gargunnock	3.8	SEPA-SE	14892	18	1977-01-01		VA	137.76		4.4	true	false	false	false	false	false	false	true	false	false	true	false	false	N	1965-01-02	2023-09-30	14.658	0.286	1995-07-05	1995-07-05	160.5	2020-02-22	2020-02-22	1.38	4.287	7.837	37.41	51.92	0.37	21456	20455	95.335				4.6	14.9	99.8	375.6	954.8	1589	1634	0.2864	0.0331	0.491	0.1472	0.0051	0.3292	0.1038	0.3632	0.1814	0.0054	0.0612	0.5882	0.3506		0.1296	0.0747	0.4136	0.65	0.436	0.925	115.3	42.55	43.0	58.1	9.6	67.54	34.18	143	76	0.12	4.6	391.3	1.639	0.728	0.1333	0.001			0.0013					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station on the meandering River Forth.	Velocity area station.	Ill defined control at road bridge. Difficult to measure slow velocities by c/m at low stages. Station has now been successfully rated by c/m 5km u/s. Only measured by ADCP at station since 2008.		Relatively flat catchment with its upper reaches rising steeply. Bedrock mixed permeability with ~60% superficial deposits. Upper catchment heavily forested; lower reaches, where river meanders extensively, supports agriculture.	Three lochs influence the flow regime. Very slow response, in comparison with the neighbouring River Teith, due to the meandering nature of the river through the Stirling carse land.
18011	Forth at Craigforth	1036.0	NS7765895458	277658.0	695458.0	56°08'09.9592"N 3°58'12.7859"W	56.1361	-3.97022	Forth	Craigforth	3.7	SEPA-SE	4638	18	1972-01-01		VA	190.08			true	false	false	false	false	true	true	true	false	false	false	false	true	N	1981-06-01	2023-09-30	46.13	2.958	1984-08-16	1984-08-16	615.0	1992-01-03	1992-01-03	5.683	14.33	26.68	113.2	150.9	0.4	15462	15462	100.0				2.5	19.0	181.4	529.2	1160.3			0.2197	0.0281	0.448	0.252	0.0075	0.2618	0.0748	0.401	0.2256	0.0064	0.0319	0.4037	0.5612	0.0032	0.1059	0.0664	0.457													0.14		1027.64												gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station d/s of the confluence of the Rivers Teith and Forth.	Originally opened in 1972 - known as Drip Bridge. Rebuilt on same site in 1982. 70m wide section - part of a large meander just above the tidal limit. Left bank floods at high stages.	Steep section contains all floods. Bridge acts as control at all stages. Gabions installed in 1980 beneath one arch to stabilise control. Reasonably stable rating, although low flow gaugings and rating segments now influenced by deposition from drain entering between measuring section and main bridge control on right bank. Since 2017 all gaugings taken upstream of drain, so it is no longer an influence.		Bedrock Devonian and Carboniferous sedimentaries in lower catchment; metamorphic rocks with igneous intrusions above. Mostly heather moorland; rugged.
18013	Black Devon at Fauld Mill	56.2	NS9135592339	291355.0	692339.0	56°06'41.0672"N 3°44'55.2054"W	56.11141	-3.74867	Black Devon	Fauld Mill	9.2	SEPA-SE	14895	18	1977-01-01	2021-11-10	CB	32.57		19.8	true	false	false	false	false	false	false	false	false	false	false	false	false	P	1977-01-02	2021-11-10	0.835	0.019	1977-05-27	1977-05-30	24.94	1992-03-31	1992-03-31	0.082	0.246	0.4	1.982	3.063	0.37	16384	16384	100.0				8.5	48.1	103.1	260.8	363.2	970	958	0.1475	0.2107	0.5674	0.036	0.0284	0.1776	0.1423	0.6407	0.0213	0.0163	0.6985	0.2824	0.0191		0.0669	0.0435	0.7995	0.49	0.363	1.0	71.2	38.09	34.1	43.9	8.4	24.86	12.6	126	240	0.23	8.5	57.47	0.604	0.827	0.0651	0.0063	0.594	0.376	0.0059	0.746	0.49			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station on the Black Devon River which joins the Forth Estuary below Clachmannan. Station closed in November 2021.	Compound broad-crested weir. Station commissioned to replace unsatisfactory flume station further u/s at Little Saline.	Concrete weir control which is stable, good full-range rating (but control subject to interference by children damming with bricks in summer).	Station closed in November 2021.	Low-lying catchment. Bedrock ~70% permeable with ~90% superficial deposit cover. Land use grassland, arable and forest.	Lade takeoff to Gartmore Dam for potable water supplies for Alloa ceased in approximately 2003/4. Upstream minewater pumping now also no longer in operation. Flows W from Cleish Hills to join Forth Estuary below Clachmannan.
18014	Bannock Burn at Bannockburn	23.7	NS8116190814	281161.0	690814.0	56°05'43.0252"N 3°54'42.5409"W	56.09528	-3.91182	Bannock Burn	Bannockburn	12.4	SEPA-SE	14897	18	1979-01-01		VA			14.1	true	true	true	true	false	false	false	true	false	false	false	false	false	P	1979-01-01	2023-09-30	0.913	0.056	1980-06-01	1980-06-01	35.05	1980-01-30	1980-01-30	0.211	0.354	0.512	2.012	2.865	0.52	16344	16344	100.0	1978-06-19		15.727	14.6	51.8	172.5	324.3	439.8	1315	1333	0.2065	0.1254	0.4103	0.2014	0.0367	0.2774	0.0888	0.3945	0.1845	0.0363	0.4554		0.5446		0.0196	0.2244	0.5805	0.59	0.467	0.893	88.8	39.35	42.4	58.2	10.1	15.89	8.26	179	78	0.44	14.9	25.37	0.541	0.688	0.0539	0.0126	0.627	0.276	0.0109	0.611	0.169			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity area station on the Bannock Burn which joins the River Forth downstream.	Velocity area station. Station added to peak flows dataset in August 2021 (WINFAP Files v10).	Gabion river control initially showed signs of instability, but is now stable. The river flows through a large culvert style bridge downstream of the station and this may be an influential control feature during the largest floods. Both banks along the station consist of intermittent stretches of artificial vertical stone wall. The banks in 2019 are densely vegetated with tree branches growing over the channel. Pictures from the 1970s show that vegetation on the banks was much less during the earlier period of record. Two peak flow ratings across period of record.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Mostly low-lying catchment. Bedrock mixed permeability; ~85% overlain by superficial deposits. Catchment is mostly moorland; some forest and arable landuse.	Small reservoirs in catchment have a slight effect on otherwise natural flows.
18015	Eas Gobhain at Loch Venachar	202.0	NN6020506926	260205.0	706926.0	56°14'03.3274"N 4°15'24.7191"W	56.23426	-4.25687	Eas Gobhain	Loch Venachar	78.9	SEPA-SE	14898	18	1979-01-01		TP				true	false	false	false	false	false	false	false	false	false	false	false	false	RP	1979-01-02	2015-09-30	7.714	0.905	1992-12-27	1992-12-27	101.1	1993-06-01	1993-06-01	2.693	2.97	3.382	22.54	31.14	0.5	13421	13392	99.784				79.3	112.5	306.8	565.2	873.4	2013	2062	0.1592	0.0006	0.351	0.3795	0.0028	0.1753	0.0004	0.3759	0.3462	0.0004		0.0754	0.9246			0.0675	0.4887	0.73	0.432	0.617	228.2	41.46	49.8	70.1	10.7	34.73	17.34	320	142	0.1	80.4	197.33	0.359	0.76	0.0207	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station d/s of Loch Venachar which is unreliable at high flows.	Station approx. 700m d/s of Loch Venachar, built to monitor compensation water.	Sharp crested measuring weir control of good stability, but control hydrologically insensitive. No high flow gauging facility; theoretical rating used - unreliable at high flows.		Geology: impermeable PreCambian strata faulted against ORS in lower catchment; widespread Boulder Clay cover. High moorland; forest at lower levels (Achray Forest and The Trossachs). Lochs Katrine, Venachar, Achray, Drunkie and Glen Finglas Res. dominate catchment.
18016	Kelty Water at Clashmore	2.7	NS4657496757	246574.0	696757.0	56°08'19.5931"N 4°28'14.4309"W	56.13878	-4.47068	Kelty Water	Clashmore	165.0	SEPA-SE	14901	18	1982-01-01	2010-05	FL	3.37			true	false	false	false	false	false	false	false	false	false	false	false	false	N	1982-01-01	2011-05-03	0.112	0.0	2005-06-03	2005-07-01	2.394	2006-12-13	2006-12-13	0.002	0.015	0.041	0.326	0.459	0.16	10715	10316	96.276				158.7	188.9	278.4	412.4	500.7	1946	2157	0.6715		0.0545	0.2739		0.7164		0.0146	0.1633	0.1057			1.0					0.74	0.491	1.0	144.4	40.31	48.0	65.9	10.5	3.38	1.64	291	60	0.62	159.5	2.28	0.138	0.954	0.012	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station in the headwaters of the River Forth catchment.	Two trapezoidal flumes in parallel. Station closed in May 2011 due to the construction of a new inadequate forestry road crossing immediately downstream of the station which frequently backs up flows, adversely effecting the hydraulic performance of the trapezoidal flumes.	Occasionally overtopped by up to 500mm (flume rating is extrapolated), but it does not drown. Inordinate mean annual loss (>900 mm).		A small and steep catchment with thin soils. Impermeable catchment; no superficial deposits. One of the most afforested UK catchment with about 70% mature forest.	Flows are flashy.
18017	Monachyle Burn at Balquhidder	7.7	NN475230	247500.0	723000.0	56°22'28.6671"N 4°28'15.3439"W	56.37463	-4.47093	Monachyle Burn	Balquhidder	292.0	CEHW		18	1982-01-01		C				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1982-01-21	1996-12-31	0.515	0.0	1982-05-28	1982-08-21	11.75	1990-02-04	1990-02-04	0.018	0.082	0.176	1.429	2.293	0.18	5459	5449	99.817				301.6	372.3	486.3	669.6	878.2	2331	2415	0.0115		0.271	0.7175		0.0606		0.249	0.6904				1.0				0.0069	0.79	0.366	1.0	241.6	48.58	56.3	82.1	11.7	5.2	2.53	505	83	0.11	300.3	6.92	0.266	0.85	0.0195	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	One of the Balquhidder experimental catchments.	Crump profile weir (capacity 50-year flood, 26 cumecs) plus in-series trapezoidal flume for greater sensitivity at low flows. IH experimental catchment. Ppt based on ground level gauges sig. exceeds areal assessments using sparse standard raingauge network.	Calibration is theoretical confirmed by gaugings.		Very wet, steep-sided glaciated valley with shallow peats, peaty gleys and upland brown earths overlying mica schist; deeper peat found on the more gently sloping upper catchment. Predominantly grass/bracken/heather - some exposed rock. Afforestation began 1987.	Responsive, natural regime.
18018	Kirkton Burn at Balquhidder	6.85	NN532219	253200.0	721900.0	56°21'59.6161"N 4°22'41.1913"W	56.36656	-4.37811	Kirkton Burn	Balquhidder	246.0	CEHW		18	1983-01-01		C				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1983-01-01	1996-12-31	0.428	0.022	1983-08-13	1983-08-31	9.518	1990-02-04	1990-02-04	0.049	0.136	0.238	0.975	1.423	0.39	5114	5114	100.0				244.7	339.6	567.4	744.5	851.2	2178	2149	0.0477		0.273	0.6529		0.3318		0.245	0.4201				0.7766	0.2234			0.2691	0.79	0.485	0.983	317.5	41.48	48.2	69.0	11.2	4.41	2.25	544	178	0.29	244.7	7.01	0.128	0.686	0.0093	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	One of the Balquhidder experimental catchments.	Crump profile weir (50-year flood, 30 cumecs), steep channel, approach conditions not ideal, calibration based on multi-meter gaugings. An IH experimental catchment. Ppt based on ground level gauges sig. exceeds areal assessments using sparse standard raingauge network.			Wet, steep-sided glaciated valley. Shallow peat, gleys and brown earths overlay mica schist. 35% coniferous forest (1982), heather and grass. Clear felling of forest began 1986; 20% cover by 1990.	Responsive, natural flow regime; a few lochans provide local storage.
18019	Comer Burn at Comer	0.9	NN3872904173	238729.0	704173.0	56°12'09.8934"N 4°36'04.6138"W	56.20275	-4.60128	Comer Burn	Comer	158.0	SEPA-SE		18	1981-01-01	1988	CB				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1987-01-01	1988-12-31	0.083	0.001	1988-06-25	1988-06-30	1.309	1988-10-25	1988-10-25	0.004	0.019	0.038	0.222	0.3	0.15	731	731	100.0				170.9	262.1	517.4	849.9	954.7	2629	2667	0.0026		0.2722	0.6656				0.2832	0.7168				1.0				0.1395	0.74	0.319	1.0	431.1	55.55	52.0	69.5	12.5	2.41	1.3	550	43	0.81	179.5	0.9	0.142	0.448	0.0112	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station with a very small catchment in the Loch Lomond and The Trossachs National Park.	The station was run in conjunction with the DAFFS Pitlochry fisheries laboratory for the duration of a project which terminated in 1988.			The catchment consists entirely of the side of a mountain. It is mostly steep, with some areas of peat bog and some bare rock.
18020	Loch Ard Burn at Duchray	0.85	NS4680498723	246804.0	698723.0	56°09'23.3886"N 4°28'05.1932"W	56.1565	-4.46811	Loch Ard Burn	Duchray	80.0	SEPA-SE	14904	18	1985-01-01		FLB				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1990-01-01	2023-09-30	0.047	0.0	2010-08-04	2023-06-17	0.953	2006-12-13	2006-12-13	0.002	0.009	0.019	0.124	0.184	0.21	12326	12083	98.029				103.1	124.4	173.4	199.3	219.0	1888	2000	0.6282		0.2139	0.1579		0.8698		0.0789	0.0513				1.0					0.74	0.609	1.0	155.8	29.2	50.5	70.3	10.2	1.9	1.12	167	7	0.41	103.1	0.86	0.078	0.352	0.0058	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A very remote upland site located within the Loch Ard Forest.	Trapezoidal flume with small crump weir in parallel. Very remote, upland site located within Loch Ard forest, no PSTN, GPS or GPRS signal and very difficult to access during winter months. All flows contained within flume and weir wing walls. Satellite logger now installed with reasonable success.	Site affected by gravel sediment build up and ice build up during extreme winter conditions.		Small catchment with max. altitude of approx. 210m, within Loch Ard Forest. Bedrock impermeable, Pre-Cambrian strata; no superficial deposits. One of the most afforested UK catchments (~ 65%).
18021	Loch Ard Burn at Elrig	1.45	NS4695998751	246959.0	698751.0	56°09'24.4727"N 4°27'56.2765"W	56.1568	-4.46563	Loch Ard Burn	Elrig	80.0	SEPA-SE	14905	18	1985-01-01		FLB	4.33			true	false	false	false	false	false	false	true	false	false	false	false	false	N	1988-01-02	2023-09-30	0.075	0.0	2001-09-20	2001-09-26	2.035	2006-12-13	2006-12-13	0.003	0.013	0.03	0.206	0.307	0.2	13056	12817	98.169				97.1	155.5	183.2	204.4	244.0	1847	2011	0.7697		0.2048	0.0199	0.0055	0.6679		0.2358	0.0445	0.0517			1.0					0.74	0.606	1.0	129.6	29.47	48.3	66.8	10.1	3.01	1.53	181	14	0.33	100.5	1.38	0.322	0.78	0.0307	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A very remote upland site located within the Loch Ard Forest.	Trapezoidal flume with small crump weir in parallel. Very remote, upland site located within Loch Ard forest, no PSTN, GPS or GPRS signal and very difficult to access during winter months. All flows contained within flume and weir wing walls.	Affected by gravel sediment build up and ice build up during extreme winter conditions.		Small catchment with max. altitude of approx. 230m, within Loch Ard Forest. Bedrock impermeable Pre-Cambrian strata; no superficial deposits. One of the most afforested UK catchemtns (~ 75%).
18022	Avon Dhu at Milton	44.5	NN5034801341	250348.0	701341.0	56°10'52.0430"N 4°24'45.2911"W	56.18112	-4.41258	Avon Dhu	Milton	20.5	SEPA-SE	14907	18	1989-01-01	2020-10-28	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1989-08-02	2020-10-27	2.414	0.002	2010-06-30	2010-07-01	25.77	1993-01-16	1993-01-16	0.223	0.814	1.517	5.772	7.427	0.54	11410	10824	94.864				19.4	44.9	208.5	480.9	703.9	2115	2076	0.4028		0.2309	0.2674	0.0036	0.482	0.0001	0.0928	0.342	0.0013			1.0			0.0217	0.2918	0.74	0.446	0.653	225.8	41.83	50.5	69.9	10.5	16.6	8.73	236	169	0.24	20.2	42.17	0.4	0.893	0.0298	0.0			0.0002					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station in the headwaters of the River Forth catchment, immediately d/s of Loch Ard. Station closed in October 2020 due to H&S concerns.	Velocity area station, situated immediately d/s of Loch Ard.		Station closed in October 2020 due to H&S concerns.	Bedrock PreCambrian impermeable strata, relatively drift free; some Boulder Clay. Heavily forested upland catchment with steep mountain tributaries, dominated by Lochs Ard and Chon.
18023	Monachyle Burn at Upper Monachyle	2.24	NN480250	248000.0	725000.0	56°23'33.8726"N 4°27'50.4020"W	56.39274	-4.464	Monachyle Burn	Upper Monachyle	434.0	SEPA-SE	116007	18	1987-01		FV				true	true	false	true	false	false	false	true	false	false	false	false	false	N	1987-01-01	2023-09-30	0.162	0.001	2023-06-16	2023-06-16	3.808	2022-12-14	2022-12-14	0.006	0.02	0.045	0.477	0.751	0.14	13422	5066	37.744	2012-05-17		5.703	430.4	443.8	480.1	550.2	654.6	2159	2406			0.3531	0.6469				0.2304	0.7696				1.0					0.79	0.368	1.0	136.7	47.75	56.1	81.6	11.5	2.62	1.54	489	111	0.32	430.7	2.19	0.365	0.541	0.0292	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	One of the Balquhidder experimental catchments.	Aluminium alloy Flat V (1:10) weir, 3.2m wide with vertical sidewalls, keyed into a natural rockbar. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	Containable head 1.2m has max. flow of 9.0 cumecs.	Instrumentation problems throughout 1996, data infilled from Lower Monachyle and Kirkton.	Very wet interfluve area to the break in slope to a steep- sided glacial valley. Shallow and deep peat, peaty gleys and upland brown earths over mica schist. Some bare rock on W boundary. Heather moorland. Experimental catchment run by IH, nested within 18017 and neighbouring 18018.	Natural catchment.
19001	Almond at Craigiehall	369.0	NT1653875267	316538.0	675267.0	55°57'47.2803"N 3°20'18.7180"W	55.96313	-3.33853	Almond	Craigiehall	22.8	SEPA-SE	14867	19	1957-01-01		VA	215.0			true	true	true	true	false	false	false	true	false	false	true	false	false	PEI	1957-01-01	2023-09-30	6.298	0.241	1959-10-09	1959-10-09	147.2	1990-10-06	1990-10-06	1.0	1.965	3.199	14.35	22.23	0.39	24379	24379	100.0	1956-08-31		128.6	21.0	60.8	177.0	280.0	514.2	905	892	0.1697	0.2302	0.3336	0.1063	0.1462	0.1917	0.2672	0.2697	0.1269	0.1389	0.7741	0.1286	0.0973		0.0146	0.1512	0.7888	0.5	0.399	0.966	45.6	44.41	34.9	46.1	8.6	46.96	24.66	177	21	0.25	21.0	379.51	0.822	0.821	0.085	0.0339	0.735	0.749	0.0609	0.834	0.739	1955		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the most downstream on the Almond.	Velocity area station with cableway.	Recorder is well sited. The station is located on a straight even reach with steep banks containing all recorded floods. Low flow control is a stable bar. The high flow control is likely a bedrock cascade combined with the deep gorge and bridge pillars at Grotto Bridge approximately 600m downstream, providing consistency through the period of record. Peak flow rating derived from current meter gaugings up to 3.3m (about 1.1 QMED), extrapolated above. Gaugings from 1957 not included in derivation of rating. A new ramp was installed on 24/01/2020 and set to the same gauge zero datum as the old ramp. A GPS survey on 09/11/2021 refined and replaced the old gauge zero figure for the entire record. Low end gauging bias after the ramp installation created some doubt on whether the new ramp had been installed to the same datum. However, the detected shift below 0.5m is thought to reflect the fault in the alignment of the old ramp below around 0.5m. A new rating had to be created to accommodate this, event though there was no actual shift in control or datum. The stage data pre 24/01/2020 has not been adjusted as the same error in stage recoding has been applied to both the stage record and to the gaugings and hence the flow record is unaffected. One peak flow rating across period of record.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9) and in August 2024 (WINFAP Files v13).	Mostly lowland catchment. Bedrock predominantly Carboniferous rocks; predominantly overlain by superficial deposits. Land use rural (grassland, arable, forest), with extensive urban development around Livingston, esp. industrial estates, and several small mining towns. No significant catchment changes known. Possible future change: expansion of Edinburgh Airport.	There are three water supply reservoirs in the headwaters (Cobbinshaw, Crosswood and Morton). Low flows substantially affected by sewage effluent esp. from Mid Calder and Newbridge STW and six smaller STWs. Abstraction at Almondell to feed Union canal.
19002	Almond at Almond Weir	43.8	NT0037765115	300377.0	665115.0	55°52'07.9399"N 3°35'36.8226"W	55.86887	-3.59356	Almond	Almond Weir	128.4	SEPA-SE	14875	19	1962-01-01	2008-12-31	CB		24.0		true	true	false	true	false	false	false	false	false	false	false	false	false	E	1962-01-01	2008-12-31	0.953	0.068	1980-06-22	1992-07-30	20.43	1994-12-11	1994-12-11	0.143	0.282	0.44	2.325	3.59	0.33	17167	15707	91.495	1961-06-09		18.569	129.4	160.3	194.2	254.8	294.7	1022	1016	0.1262	0.1208	0.4285	0.143	0.1699	0.1677	0.0676	0.4619	0.1792	0.1226	0.2625	0.6997	0.0378			0.234	0.7101	0.57	0.365	0.995	37.2	47.0	34.0	46.1	8.6	19.61	10.84	203	39	0.26	129.5	44.37	0.802	0.909	0.0872	0.0327	0.696	0.702	0.0513	0.812	0.716	1960		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested masonry weir on the River Almond. Land use changes may have affected the flow regime.	Broad-crested masonry weir of a former pumping station intake works; section about 6m wide. Prior to 1969 the weir was compounded (lower crest 6.1m wide, upper crest 1.45m wide). A sluice gate, which extended the earlier structure capacity by 2.8cumecs, was permanently closed in 1969.	U/s from weir, weed growth has constricted approach channel. Containment good on rb, structure full 1.4m corresponds to bankfull on lb and has been exceeded several times during the period of record. No cableway. A footbridge d/s & a metal vehicle crossing 30m d/s maybe high flow control. Peak flow rating derived from current meter gaugings up to 1m (about 0.8 QMED), simple extrapolation beyond.		Mainly low-lying plateau moorland (much artificially drained). Mixed permeability bedrock with predominantly superficial deposit cover. Carboniferous limestone, Millstone Grit, Coal Measures. Land use predominantly rough pasture with small mining communities in the valley; substantial afforestation in the headwaters.	Land use changes may have affected the flow regime. Effluent return. Mining may lead to accretion and quality concerns. Artificial moorland drainage.
19003	Breich Water at Breich Weir	51.8	NT0134663841	301346.0	663841.0	55°51'27.4654"N 3°34'39.4311"W	55.85763	-3.57762	Breich Water	Breich Weir	136.0	SEPA-SE		19	1961-01-01	1980-12-31	B		25.0	26.0	true	false	false	false	false	false	false	false	false	false	false	false	false	E	1961-10-01	1980-11-30	0.889	0.01	1975-08-02	1975-08-02	15.86	1969-11-22	1969-11-22	0.092	0.253	0.403	2.17	3.411	0.31	7001	6940	99.129				135.8	196.7	245.6	300.4	355.0	1030	1012	0.3042	0.0854	0.3629	0.1561	0.0798	0.3279	0.0703	0.3317	0.2185	0.0512	0.6566	0.3141	0.0293			0.3767	0.5678	0.57	0.309	0.995	46.6	47.93	34.0	47.0	8.6	19.44	11.52	247	10	0.25	135.8	52.89	0.556	1.03	0.0593	0.0083	0.577	0.756	0.0212	0.726	0.702			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station in a fairly linear catchment in the headwaters of the River Almond.	Broad crested weir.
19004	North Esk at Dalmore Weir	81.6	NT2520861612	325208.0	661612.0	55°50'30.8493"N 3°11'45.2592"W	55.8419	-3.19591	North Esk	Dalmore Weir	132.1	SEPA-SE	14873	19	1960-01-01		MIS	110.0	54.0	36.9	true	true	false	true	false	false	false	true	false	false	false	false	false	SEI	1960-01-01	2023-09-30	1.617	0.1	1992-07-30	1992-07-30	27.98	1990-10-06	1990-10-06	0.372	0.705	1.06	3.415	4.895	0.53	23284	21093	90.59	1961-03-28		24.23	131.8	218.1	279.5	428.6	577.6	971	949	0.108	0.084	0.4995	0.2669	0.0381	0.1377	0.1133	0.4584	0.2458	0.0428	0.7038	0.0863	0.2099		0.1192	0.111	0.5207	0.49	0.561	0.975	112.0	37.22	38.3	52.3	8.7	21.3	11.31	299	91	0.26	131.8	79.84	0.285	0.949	0.0316	0.0182	0.64	0.35	0.0185	0.805	0.323	1960..2005		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A dog-legged ogee section masonry weir on the North Esk.	A dog-legged ogee section masonry weir, 25m wide. Very badly polluted river in the past due to paper waste.	Weir is insensitive. All flows contained. There is no cableway and so the station is rated by wade gaugings up to below QMED, with flows beyond this based on simple extrapolation. Single peak flow rating across the period of record. Extrapolated flows above 15 cumecs should be used with caution and rated flow estimates above QMED are not credible.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and August 2021 (WINFAP Files v10).	Upland catchment draining the SE slopes of the Pentland hills. Bedrock Carboniferous and Devonian sedimentaries with igneous intrusions; predominantly overlain by superficial deposits. Rural catchment - mostly rough grazing with some forest, arable landuse and some urban. Penicuik town has approximately doubled in size during the period of record. Minimal floodplains.	Flashy response. Low flows affected by effluent return and industrial and agricultural abstractions. Several small storage reservoirs in the headwaters.
19005	Almond at Almondell	229.0	NT0862368601	308623.0	668601.0	55°54'06.5464"N 3°27'46.8640"W	55.90182	-3.46302	Almond	Almondell	73.6	SEPA-SE	14869	19	1963-01-01		FV	700.0	17.0		true	true	true	true	false	false	false	true	false	false	false	false	false	PEI	1962-10-01	2023-09-30	4.388	0.186	1972-10-14	1972-10-14	116.1	1994-12-11	1994-12-11	0.613	1.26	2.189	10.33	16.11	0.36	22280	21912	98.348	1962-02-01		93.91	74.9	142.4	221.8	293.6	514.2	979	964	0.2072	0.1118	0.3736	0.1698	0.123	0.2518	0.1232	0.3127	0.1827	0.1219	0.7188	0.2099	0.0714		0.0077	0.2468	0.7084	0.51	0.361	0.953	46.5	46.03	35.3	47.8	8.7	32.0	17.11	221	7	0.28	81.7	232.54	0.607	0.995	0.0647	0.0276	0.715	0.591	0.0465	0.833	0.654			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Informal Flat V weir. Water abstracted to supply Union Canal.	An informal Flat V triangular weir was installed at the site in June 1970. Structure widened and a sluice (bypass) incorporated - June 1971.	Original control was a natural bar with large boulders before the installation of the informal Flat V triangular weir. The sluice is thought to be for weir maintenance only and has no impact on the flow record. An old stone double arch bridge approx. 300m downstream will likely be a control feature at the highest events when the weir is drowned out. Two ratings are applied; before and after weir installation.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Catchment with mix of lowlands-uplands. Bedrock mainly Carboniferous rocks; predominantly overlain by superficial deposits. Predominantly grassland, some forest (in headwaters), and arable landuse. Predominantly rural. Floodplain active even at QMED between Harthill and Blackburn in headwaters. Livingston was developed during the period of record and development is still on-going. There are several small coal mining towns in catchment.	Low flows affected by effluent discharge from East Calder sewage works and by abstraction (<1cumecs) to supply Union Canal via a thin plate weir 200m u/s of the station. Flashy response.
19006	Water of Leith at Murrayfield	107.0	NT2279273202	322792.0	673202.0	55°56'44.2734"N 3°14'16.0325"W	55.94563	-3.23779	Water of Leith	Murrayfield	37.5	SEPA-SE	14868	19	1963-01-01		VA	86.0		12.3	true	true	true	true	false	false	false	true	true	false	false	false	false	SR	1963-01-02	2023-09-30	1.569	0.127	1978-07-20	1978-07-20	52.25	2000-04-26	2000-04-26	0.368	0.602	0.9	3.427	4.971	0.51	22187	22184	99.986	1962-05-01		31.564	36.8	72.1	244.0	371.0	564.4	901	867	0.1001	0.1383	0.2612	0.3006	0.176	0.1039	0.1755	0.2266	0.2815	0.1967	0.9647		0.0353		0.0159	0.0545	0.794	0.49	0.428	0.909	72.0	42.88	38.0	49.6	8.9	32.29	16.94	229	349	0.46	36.9	102.28	0.495	0.705	0.0579	0.0992	0.866	0.286	0.1094	0.902	0.284	1961..1972		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the most downstream on the Water of Leith.	Velocity area station in a straight even reach 50m upstream of a road bridge; section about 14m wide. The banks are steep to 2.5m.	There are two single arch road bridges 50m downstream and it is hypothesised that one or both are the main control during floods. These bridges have been constant through the period of record. The low flow control is the rock bar under the bridge, transitioning to the bank profile at medium flows and then the bridge(s) at higher flows. The piers of the railway bridge around 0.5km downstream are potentially influential during higher events. The gradient of the 1984 flood level was surveyed down through the reach of the railway bridge and it shows significant backing up from the piers. However, considering the railway piers are much further downstream, the local influence of the two road bridges likely preside as the dominant control at flood levels. There is also a large mill weir downstream from the railway bridge, although it likely not a factor being so far downstream. The photo archive in 2003 compared to the 1970s shows greater vegetation growth on the banks and hints at possible bank slumping. Three flood ratings are applied through the station history from 1962. The change in flood rating around 1966 from QHigh1962 to QHigh1966 is thought to represent a datum change and not a control change. Confirmation of this datum change and the exact date has yet to be resurrected from the paper archives. QHigh1966 is deemed suitable up to the start of the flood defence work that started around October 2016 and ended around October 2017. The works involved a lot of variable channel adjustment in the station reach including the temporary dumping of building material in the channel during two separate phases of the construction. There was no gaugings or calibration carried out during the period of works, which spanned water year 2016. The flows in this period had to be modelled by regression from Colinton gauging station and hence are of lower confidence. The flood defence works were finished by October 2017 and gauging commenced to capture the new stage-discharge relationship. Flood gauging in November 2022 allowed the creation the flood segment, QHigh2017, which is deemed applicable from the completion of the flood defences in October 2017. This creation of QHigh2017 was based on limited gauging evidence and newer versions of this rating will be required as SEPA work to improve the new stage-discharge relationship and increase the confidence in the flood estimates. Bankfull of 2.6m valid until 01/10/2016 - new bankfull post-flood defence scheme is yet to be established.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9) and in August 2024 (WINFAP Files v13).	Catchment with mix of lowlands-uplands; headwaters in the Pentland Hills. Bedrock permeable with predominantly superficial deposits. Lower part of the catchment has undergone urban development; the upper part contains mainly moorland, arable and forest landuse. On-going urban development particularly in 1970s. Dense urban development in lower catchment. Narrow long catchment. Extent of floodplain storage is unlikely to exert a major influence on flood regime.	Catchment contains 3 storage reservoirs in headwaters (Harperrig, Threipmuir, Harlaw). They are no longer used for water supply and Threipmuir has a target seasonal level regime for wildlife management. Proposed drawdown levels are being discussed (2002/03) for flood alleviation purposes. Union Canal runs through lower catchment though it is not likely to influence flood regime significantly. 150 combined sewer overflows in urban reaches. Relatively impervious and flashy.
19007	Esk at Musselburgh	330.0	NT3382872327	333828.0	672327.0	55°56'21.9104"N 3°03'39.2640"W	55.93942	-3.06091	Esk	Musselburgh	3.3	SEPA-SE	635	19	1962-01-01		VA	200.0		7.2	true	true	true	true	false	false	false	true	false	false	true	false	false	SPEI	1962-01-01	2023-09-30	4.48	0.671	1989-08-08	1989-08-08	107.3	1966-08-14	1966-08-14	1.049	1.861	2.771	9.218	13.4	0.54	22553	22553	100.0	1961-12-01		66.77	4.2	81.8	248.7	399.0	651.8	853	837	0.1176	0.2342	0.4279	0.143	0.0638	0.1378	0.247	0.387	0.1554	0.0637	0.5955	0.1712	0.2332		0.2091	0.0538	0.5667	0.49	0.567	0.944	94.8	34.09	35.9	49.9	8.6	44.49	24.75	239	27	0.23	4.3	322.53	0.382	0.843	0.0433	0.0236	0.741	0.626	0.0325	0.818	0.58	1961		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the most downstream on the Esk.	Velocity area station in a section with steep banks.	Low flow control is a shingle bar, high flow control formed by bridge buttresses. The downstream bridge was converted from a rail bridge to a road bridge around 1982. In extreme flows, control of bridge diminishes and control becomes d/s channel and footbridge. Flows abstracted u/s of the main station along a mill lade were monitored (until late 1980s) - summation needed to give total basin runoff. Low flows can be affected by sewage effluent and mining water. Abstraction immediately u/s bypasses gauged station. Stream controlled by a sluice - it was monitored by Station 22 (Mill Lake at Inveresk), which was closed in the late 1980s (QBAR 0.7cumecs). Multiple peak flow ratings accross period of record. High rating appears to oscillate with periodic dredging (a problem in the past) and accretion of a bar on the rb. The deposition of sediment and associated dredging was exacerbated by a upstream landslip on 08/01/1992. There is a report of dredging occurring on 01/07/1995.	Historic flooding occurred and is manifested in markings on Inveresk Mill (e.g. 13/08/1948 7.37m, 21/09/1891 6.99m), about 1m above bankfull. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Catchment with mix of lowlands-uplands. Bedrock Carboniferous sediments predominantly overlain by superficial deposits. Land use predominantly exposed moorland of the Moor foothills with arable lands, forest, and several small former mining towns in the valley. Notable floodplains. No significant catchment changes known.	Gladhouse and Roseberry Reservoirs used for water supply.
19008	South Esk at Prestonholm	112.0	NT3248862323	332488.0	662323.0	55°50'57.7131"N 3°04'47.4762"W	55.84936	-3.07985	South Esk	Prestonholm	76.8	SEPA-SE		19	1964-01-01	1990-12-31	C	500.0	42.0	15.5	true	true	true	true	false	false	false	false	false	false	false	false	false	SG	1964-01-01	1989-12-31	1.339	0.217	1973-04-16	1973-04-16	41.75	1982-01-03	1982-01-03	0.331	0.567	0.825	2.712	3.909	0.55	9497	9497	100.0	1963-10-01	1990-01-01	19.114	74.3	175.7	271.5	444.2	651.8	883	859	0.0993	0.1891	0.5555	0.1258	0.0097	0.1393	0.1946	0.465	0.1701	0.01	0.6609	0.0073	0.3318		0.3249	0.0716	0.4307	0.49	0.592	0.888	94.0	31.01	37.2	50.8	8.9	23.74	12.43	286	353	0.35	74.3	113.49	0.363	1.011	0.0418	0.0032			0.0043					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump single-crest weir on the South Esk.	Crump single-crest weir approximately 6m wide. Closed 01/01/1990; replaced by Cow Bridge. Was on a straight artificial cut which diverted the flow from a coal mining waste site.	Accretion u/s deflects the flow which is skewed at the weir crest. To even the flow a step was built across channel u/s. Theoretical calibration superseded in 1970 by current meter gaugings up to 1.5m (about QMED).		The catchment is predominantly exposed moorland (developed on Carboniferous sediments) with some forest cover. Some mining (until late 1980s). No significant catchment changes known. Minimal floodplain storage.	Some mining until late 1980's. Low flows were moderately augmented by pumping from collieries - now ceased. Three reservoirs (largest is Gladhouse Reservoir) and one loch in headwaters.
19009	Bog Burn at Cobbinshaw	8.5	NT0255259141	302552.0	659141.0	55°48'56.3804"N 3°33'24.0241"W	55.81566	-3.55667	Bog Burn	Cobbinshaw	256.0	SEPA-SE	14877	19	1963-01-01	2005-10-01	FL			14.5	true	false	false	false	false	false	false	false	false	false	false	false	false	S	1963-01-01	2005-10-01	0.159	0.0	1992-10-03	1993-03-01	1.501	1970-10-31	1970-10-31	0.014	0.066	0.121	0.34	0.459	0.61	15615	14071	90.112				257.4	261.5	275.3	289.9	302.6	1013	992	0.2273	0.0089	0.2181	0.382	0.0121	0.3268	0.0301	0.138	0.3556	0.0023	1.0					0.5478	0.3112	0.49	0.352	0.615	30.5	48.71	36.1	49.6	8.9	5.96	3.03	275	325	0.26	257.4	8.68	0.424	1.037	0.0577	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station that measures the outflow of Cobbinshaw Reservoir.	A trapezoidal flume which has never been overtopped. Measures outflow from Cobbinshaw Reservoir (British Waterways).			A gently sloping moorland catchment with increasing forestry.	Water is abstracted d/s from the Almond at Almondell for the Union Canal. Flow regime is dominated by reservoir operation.
19010	Braid Burn at Liberton	16.2	NT2724970781	327249.0	670781.0	55°55'28.4883"N 3°09'56.8352"W	55.92458	-3.16579	Braid Burn	Liberton	49.9	SEPA-SE	14876	19	1969-01-01		C+C		20.0		true	false	false	false	false	false	false	true	false	false	false	false	false	N	1969-01-01	2023-09-30	0.191	0.008	2020-05-30	2020-05-30	8.01	2000-04-26	2000-04-26	0.034	0.085	0.13	0.383	0.504	0.63	19996	19710	98.57				48.3	100.7	161.5	335.7	485.7	767	770	0.1693	0.0732	0.3193	0.1202	0.3078	0.152	0.0394	0.3762	0.1037	0.3224	0.4156		0.5844				0.5262	0.49	0.514	0.948	113.6	39.6	35.4	47.9	8.8	12.37	6.25	190	2	0.45	48.6	15.4	0.281	0.811	0.0327	0.1532	0.815	0.76	0.1595	0.874	0.777			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir on Braid Burn. Some small reservoirs in headwaters that are drawn down for flood prevention.	Compound Crump weir without a cableway. Removed from Peak Flow Dataset in August 2021 (WINFAP Files v10).	Flows were originally measured by a Crump profile weir and trapezoidal flume in parallel. The flume suffered from choking by domestic refuse and children's dams and so was replaced in Oct 1985 by a second Crump profile weir d/s of the first. Culverts present about 300m d/s and may back up in flood situations. Theoretical rating with current meter gaugings up to 0.4m (0.4 QMED). Changed after new structure built in 1985. Possible new hydraulic model rating once flood prevention scheme complete. Crump weir can be affected by deposition when only the lower crest is in use (but this clears once the higher crest is also in use). Data removed from peak flows dataset due to very poor confidence in peak flows as essentially designed and operated for low flows - no flood gaugings, backing up from downstream culvert and poor containment.	Flows during the flood prevention works are still under review and therefore not held on the NRFA.	Mostly low-lying catchment with the headwater tributaries steeply rising in the Pentland Hills. Complex bedrock geology - Silurian/Devonian sedimentaries and igneous intrusions; with half overlain by superficial deposits. The lower part of the catchment is extensively urbanised. There are several small reservoirs in the headwaters with forest and some arable landuse. Progressive urbanisation.	Flood prevention works affected the site (completed in 2011). Torduff, Clubbiedean and Bonaly are small reservoirs in headwaters that are drawn down for flood prevention. Combined sewer overflows discharge into the stream.
19011	North Esk at Dalkeith Palace	137.0	NT3322167577	333221.0	667577.0	55°53'47.9946"N 3°04'10.0068"W	55.89667	-3.06945	North Esk	Dalkeith Palace	28.6	SEPA-SE	14878	19	1975-01-01	2012-12-31	VA	150.0		9.0	true	true	false	true	false	false	false	false	false	false	false	false	false	GN	1963-01-01	2012-12-31	2.32	0.321	2004-03-01	2004-03-01	64.83	2002-10-22	2002-10-22	0.577	1.012	1.451	4.67	6.932	0.53	18263	16045	87.855	1962-06-27		36.856	31.9	152.6	269.1	415.8	577.6	920	907	0.1257	0.111	0.4649	0.237	0.055	0.1444	0.1487	0.4344	0.214	0.0551	0.6329	0.0856	0.2816		0.1349	0.0692	0.5614	0.49	0.551	0.965	121.0	37.15	38.0	52.1	8.7	36.77	22.51	272	83	0.25	31.9	133.41	0.326	0.879	0.0328	0.0209	0.672	0.634	0.0258	0.789	0.575			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on North Esk, new site 300m upstream of old from Aug 1993.	Velocity area station. The rb is a vertical stone wall, whilst the lb slopes gently to the hut at 2.5m. The water is stained red from effluent pumped from mine workings.	The recorder is sited on a bend in a natural river reach immediately u/s of a footbridge. Flow velocities are faster near the rb, especially in floods. The new site (from Aug 1993) is situated 300m u/s on a straight section with a rock bar control. Both station locations have contained all flows to date. Peak flow ratings derived from current meter gaugings up to 1.6m (about 1.1 QMED), simple extrapolation beyond.		Mostly upland catchment with the headwaters draining the steep slopes of the Pentland Hills. Bedrock Carboniferous and Devonian sedimentaries with igneous intrusions. Predominantly overlain by superficial deposits. Land use mostly rough grazing with some forest and arable. Significant urban development. No significant changes although mining in the area declined in 1980's.	North Esk Reservoir is a small reservoir that probably has no effect on flood response.
19012	Water of Leith at Colinton	72.0	NT2119068792	321190.0	668792.0	55°54'20.7285"N 3°15'43.7100"W	55.90576	-3.26214	Water of Leith	Colinton	92.2	SEPA-SE	14880	19	1976-01-01		FV			19.9	true	false	false	false	false	false	false	true	false	false	false	false	false	SR	1976-01-01	2023-09-30	1.323	0.068	1978-06-29	1978-06-30	65.4	2000-04-26	2000-04-26	0.304	0.47	0.729	2.843	4.169	0.51	17440	17177	98.492				91.0	187.2	271.5	391.2	564.4	965	925	0.1005	0.1227	0.306	0.413	0.035	0.1194	0.1819	0.2623	0.3842	0.0306	0.9512		0.0488		0.0125	0.0753	0.7468	0.49	0.377	0.877	80.6	42.63	38.4	50.7	9.0	24.85	13.66	282	348	0.47	92.0	74.05	0.372	0.913	0.0392	0.0161	0.689	0.263	0.0152	0.821	0.283			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station to the SE of Edinburgh built to measure compensation flows from reservoirs in the Lothian Region.	Flat V weir. Built to measure compensation flows from reservoirs in the Lothian region; these dominate the summer hydrographs. Both SEPA and Scottish Water measure here.	Flows fully contained in vertical channel walls. Uses theoretical rating (confirmed by gauging). The station is gauged by wading up to 0.5m, ADP gauging is carried out at higher levels from a bridge ~500m downstream. There is a small inflow channel upstream of the weir (right bank) which can input at high flows and cause a bit of turbulence. There are no problems with weed growth at the station.		Catchment is almost entirely rural. The SW edge of the catchment is steep (Pentland Hills) rising to over 500m; the rest has moderate slopes. Bedrock predominantly permeable with ~85% superficial deposit cover. Land use grassland and arable with some forestry and two major reservoirs.	Regime affected by Water of Leith flood prevention scheme.
19014	Brox Burn at Newliston	34.1	NT1139373124	311393.0	673124.0	55°56'34.6650"N 3°25'12.7791"W	55.94296	-3.42022	Brox Burn	Newliston	35.6	SEPA-SE	14882	19	1977-01-01		B				true	true	true	true	false	false	false	true	false	false	false	false	false		1986-01-01	2023-09-30	0.537	0.019	2010-07-08	2010-09-05	11.71	2000-11-06	2000-11-06	0.07	0.205	0.318	1.154	1.713	0.44	13787	9706	70.4	1976-01-01		10.681	35.8	61.7	129.4	215.6	310.7	831	826	0.1193	0.279	0.3338	0.0021	0.2491	0.1227	0.373	0.2203	0.0353	0.2465	0.7649		0.2351		0.0218		0.9244	0.49	0.431	0.989	44.2	43.13	35.5	44.3	8.7	15.98	7.94	133	84	0.39	36.1	37.33	0.596	0.832	0.0738	0.0763	0.724	0.871	0.1154	0.829	0.827			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station on the Brox Burn upstream of the confluence with the River Almond.	Station added to peak flows dataset in August 2024 (WINFAP Files v13).	A flat broad crested weir has been in place though the entire period of record. Although the station started operation in 1976, the digital record starts from June 1997. The insensitive weir design is not conducive to accurate low flow estimations. The weir does however provide some control stability and continuity through record. Some work was carried out in 2022 to improve the ratings applied through the record and to improve the upper segment for optimal and consistent estimation of floods. These improvements allowed the station to be considered for inclusion in the Peak Flows. One peak flow rating across period of record. Rated flood flows are based on gaugings up to 1.012m, with a measured flow of 8.4 cumecs. Flow estimates above the highest gauging are based on a simple extrapolation of the rating. The banks appear sufficiently high to contain the higher floods and so this improves the likelihood that the extrapolated rating is producing reasonable flow estimates. Considering the above information, pooling status has been tentatively assigned to this station. However, with the highest flood in the digital record reaching 1.797m and other larger events exceeding 1.5m, the extent of the rating extrapolation brings uncertainty that the end user should consider before using this dataset in a particular study.	The POT record is likely missing two peaks in WY2008/09 due to gaps in the stage record.
19017	Gogar Burn at Turnhouse	38.8	NT1608873289	316088.0	673289.0	55°56'43.0368"N 3°20'42.4413"W	55.94529	-3.34512	Gogar Burn	Turnhouse	32.1	SEPA-SE	14883	19	1977-01-01		MIS				true	true	true	true	false	false	false	true	false	false	false	false	false	P	1986-01-01	2023-09-30	0.482	0.01	1990-09-14	1990-09-15	17.88	2000-04-26	2000-04-26	0.05	0.146	0.239	1.036	1.719	0.39	13787	13780	99.949	1977-01-02		12.8	33.5	47.1	99.2	199.7	346.9	759	756	0.1124	0.3868	0.2615	0.0147	0.2147	0.0874	0.4537	0.2159	0.0302	0.2113	0.9366		0.0634		0.0298		0.9344	0.49	0.51	0.99	43.0	43.35	35.3	45.0	8.6	20.77	10.13	112	5	0.38	33.5	40.31	1.468	0.692	0.1281	0.05	0.909	0.689	0.1125	0.911	0.683			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station located next to Edinburgh airport on a straight reach in a mainly agricultural catchment.	Station (rated section with cableway) located on a straight reach in a mainly agricultural catchment (the only development is at Edinburgh Park, development here is still on-going [2015]). Further d/s of the station the river turns a 90 degree bend at the Edinburgh Airport runway just above the confluence with the River Almond. This can back-up at high flows and flood parts of the airport. The river tends to flood u/s of the station with consequent damping of its hydrographs. Station added to peak flows dataset in September 2023 (WINFAP Files v12).	Small low flow control and large masonry broad crested weir controlling higher flows. A good site, although an issue of gauging at low flows due to low velocities in the channel; this has been improved by gauging with a Flow Tracker instead of propeller current meter. Station gets silted up so needs regular flushing. There is regular weir cleaning to keep it clear. Sediment was dug our from the left side of the weir on 10/08/2017.	Exceptional peak flow in April 2000 followed storm totals exceeding 80mm.	Lowland catchment. Bedrock permeable with >95% superficial deposit cover. Catchment includes part of Edinburgh, and the urban fraction is increasing. 1.5km of the river has been culverted because of new development. The remainder of the catchment is mainly arable, grassland, and forest.	Small net impact on runoff due to airport discharges.
19020	Almond at Whitburn	30.3	NS9479265548	294792.0	665548.0	55°52'17.6640"N 3°40'58.5732"W	55.87157	-3.68294	Almond	Whitburn	156.3	SEPA-SE	14881	19	1978-01-01		MIS	27.67			true	false	false	false	false	false	false	true	false	false	false	false	false	EN	1986-01-01	2023-09-30	0.759	0.018	1996-07-17	1996-07-17	26.03	1990-10-06	1990-10-06	0.081	0.182	0.313	1.79	3.037	0.29	13787	13786	99.993				156.2	168.3	208.4	256.3	294.7	1047	1033	0.1306	0.1213	0.4345	0.1683	0.1347	0.1893	0.0443	0.4955	0.1932	0.0772	0.0892	0.8699	0.0408			0.2687	0.654	0.58	0.343	0.994	38.3	47.44	33.4	45.2	8.6	12.82	5.87	210	39	0.26	156.3	32.03	0.741	0.834	0.0855	0.025	0.761	0.531	0.0361	0.826	0.58			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A small concrete weir in a fairly steeply banked channel in a low-lying catchment.	Small concrete weir in fairly steeply banked channel which was realigned for an agricultural drainage scheme.	All flows are contained.		Low-lying catchment. Bedrock mixed permeability, ~90% overlain by superficial deposits. Land use mainly agricultural with increasing amounts of forestry and land drainage. Several opencast coal sites, but these have all been filled in.	U/s of Whitburn STW and is the only natural station on the Almond.
19021	South Esk at Cowbridge	156.0	NT3384367779	333843.0	667779.0	55°53'54.8368"N 3°03'34.3845"W	55.89857	-3.05955	South Esk	Cowbridge	28.0	SEPA-SE	5981	19	1990-01-01		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		1998-01-01	2023-09-30	2.226	0.408	2023-09-05	2023-09-05	42.25	2002-10-22	2015-12-05	0.597	0.883	1.365	4.561	6.665	0.55	9404	7943	84.464	1992-06-01		37.742	28.7	106.1	250.2	388.5	651.8	837	818	0.1108	0.2718	0.4486	0.0919	0.0586	0.1348	0.2673	0.3874	0.1329	0.062	0.5919	0.1665	0.2415		0.2625	0.0521	0.5437	0.49	0.56	0.916	83.8	32.4	35.7	49.6	8.7	31.02	16.28	246	358	0.34	28.7	155.93	0.353	0.982	0.0418	0.0265	0.781	0.307	0.0321	0.83	0.314			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The last station on the River South Esk before the confluence with the River North Esk.	Station added to peak flows dataset in August 2021 (WINFAP Files v10).	Rocky riffle downstream is section control for low flows. Medium to high flows controlled by downstream open channel hydraulics and downstream bridges may be a factor at highest flows. The rating parameters could be adjusted to better align with the channel physics, but the ratings themselves are a good fit to the available gauging's and flows are contained.
20001	Tyne at East Linton	307.0	NT5909176808	359091.0	676808.0	55°58'56.9877"N 2°39'25.9165"W	55.9825	-2.6572	Tyne	East Linton	16.5	SEPA-SE	14870	20	1961-01-01		VA	300.0		8.4	true	true	true	true	false	false	false	true	true	false	true	false	false	EI	1961-01-01	2023-09-30	2.931	0.327	1969-09-06	1969-09-06	104.7	1983-05-28	1983-05-28	0.589	1.113	1.721	5.862	9.249	0.54	22918	22918	100.0	1958-12-23	1981-10-01	58.498	16.6	70.7	155.7	318.8	525.9	734	713	0.1268	0.5091	0.275	0.0715	0.0151	0.128	0.5596	0.225	0.0708	0.0158	0.7273	0.0127	0.26		0.1127	0.0048	0.7387	0.43	0.489	0.987	70.2	35.37	34.7	48.9	8.5	43.29	25.74	174	3	0.25	16.9	307.26	0.404	0.871	0.0503	0.0035			0.0072	0.767	0.653			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the most downstream on the Tyne.	Velocity area station.	This is an open channel station. The low flow section control being the riffle downstream from the station. For higher flows, the channel control becomes the dominant feature with the road bridge 200m downstream playing a key role. An old mill weir and bedrock cascade further downstream may be influential control features during large floods. The rebuild of the road bridge 200m downstream at an unknown date in 1982 is the most significant event affecting the station calibration, with distinctly different relationships before and after the build. The old bridge had a single span. The current bridge design is double box culvert shaped. Before 1982 the ratings are calibrated using gaugings up to 3.026m, which provide good confidence in the flood estimates before 1982. After 1982 there was a long period with no flood gaugings, until the cableway was recommissioned in 2019. Subsequently some flood gaugings at 2.38m were carried out in June 2019 and these provide some confidence in the post 1982 calibration up to 2.38m. These gaugings at 2.38m coincidently mark the start of a major change in cross sectional bank profile, where there is a footpath inserted along the left bank. Post 1982 flood estimates above 2.38 are based on a crude modelled segment based on knowledge of channel dimensions and with some gravitation to pre 1982 flood gaugings. Lower segments through the period of record have been developed to capture evident changes to the low flow control. These include a pipe construction, first noticeable in gaugings from 01/05/69, periods of weed growth in 1973 and 1974, and a large flood on 07/11/2000. Archive notes for the early part of the record, mention corrections for periods of weed growth and any future revision and recalculation of low to medium flows in this early period would need to investigate and understand this more.	During 1982 recorded stage was adjusted during rebuilding of the road bridge 200m d/s. Peaks over threshold prior to September 1992 have a default time of 00:00. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	The catchment is characterised by steep headwaters in the Lammermuir Hills and broad flat valleys. Bedrock Silurian and Ordovician sedimentary rocks; predominantly superficial deposit cover. Land use mainly arable in the valleys with grassland in the headwaters. No significant catchment changes known.	Low flows affected by sewage effluent and abstraction for irrigation d/s of Haddington. Significant floodplain storage throughout lower reaches believed to influence flood frequency curve.
20002	West Peffer Burn at Luffness	26.2	NT4886581117	348865.0	681117.0	56°01'12.8094"N 2°49'18.7990"W	56.02022	-2.82189	West Peffer Burn	Luffness	4.2	SEPA-SE	14865	20	1968-01-01		MIS	78.0	1.1	19.4	true	false	false	false	false	false	false	true	false	false	false	false	false	I	1966-10-01	2023-09-30	0.148	0.0	1994-08-18	1996-09-20	5.397	1982-01-04	1982-01-04	0.01	0.039	0.071	0.321	0.524	0.47	20819	20819	100.0				3.8	11.7	27.4	59.1	135.2	643	616	0.0363	0.7363	0.2164	0.0021	0.0081	0.0275	0.8417	0.1046	0.0175	0.0081			1.0		0.2717		0.6882	0.33	0.47	0.995	30.9	31.99	33.1	42.8	8.2	10.01	5.7	32	322	0.17	3.9	25.51	0.853	0.836	0.1269	0.0			0.0024					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal flume and Crump profile weir on West Peffer Burn.	The station originally consisted of a large-size GRP trapezoidal flume only. Since 15/09/1967 flows have been measured by a trapezoidal flume and Crump profile weir (crump crest at 0.445m above flume invert) in parallel. The section is within steep banks on a straight reach of a small ditch with low gradient (no cableway). Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Low flows are severely reduced by both groundwater and surface water abstraction for spray irrigation during dry summers. Pre-1968: theoretical rating or stages up to 0.914m; high flow calibration is not reliable. From 1968: theoretical rating, confirmed by gaugings. Modular probably to 0.757m - then kink point in rating curve. Bankfull around 2.2m. Primarily a low flows structure with limited high flow gaugings and variable backwater effects.		Lowland catchment draining flat arable land. An impervious catchment with an extensive Boulder Clay cover. Agricultural drainage has possibly changed and improved over period of record.	Channel is known to be dammed upstream which can affect the flows.
20003	Tyne at Spilmersford	161.0	NT4561868891	345618.0	668891.0	55°54'36.1159"N 2°52'17.3915"W	55.91003	-2.8715	Tyne	Spilmersford	69.1	SEPA-SE	14871	20	1965-01-01		VA	130.0		26.3	true	true	true	true	false	true	false	true	false	true	false	true	true	I	1965-01-01	2023-09-30	1.49	0.141	1976-08-20	1976-09-20	59.98	2000-11-07	2000-11-07	0.283	0.533	0.842	3.072	4.934	0.5	21457	21394	99.706	1962-02-01		28.34	69.9	98.6	184.2	321.6	495.3	758	724	0.1326	0.4916	0.3099	0.053	0.0102	0.1439	0.5327	0.2562	0.0572	0.0099	0.8383	0.024	0.1377		0.1548	0.0089	0.7242	0.43	0.52	0.987	65.6	33.89	32.7	48.7	8.4	22.51	10.84	195	5	0.26	70.1	162.77	0.338	0.826	0.0453	0.0026			0.0045			1961..1974	1962-09-01..1975-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, flood warning station.	Velocity area station. The channel reach is within steep, high flood banks which contain all floods in record. Flows from this station are used as part of the Haddington flood warning system.	SEPA has record of gaugings from 29/09/1959 and so the station must have existed in some form from at least this date. The formal start date is 01/02/1962, but the existence of earlier data is worth recognition and hopefully can be resurrected and understood on future investigation. The original station was open channel with a gravel bar acting as the low flow control. The original NRFA station description mentioned that the gauge board was lowered by 0.125m on 01/09/1969. However, the datum history on NRFA suggests the adjustment was from 70mAOD to 69.09mAOD (-0.91m). Hence there is an outstanding action on SEPA to check the station history records and clarify the adjustment. The datum adjustment is not currently reflected in the Peak Flow rating records and in need of review. A gabion basket control was installed on 29/09/1972. On 01/08/1975, the current concrete broad crested weir was constructed, likely using the gabion as a foundation. Until the control and datum history are clarified, the pre 01/08/1975 records are recommended by SEPA to be rejected. The post 01/08/75 data has greater confidence, with the concrete weir providing some stability. The weir drowns out at medium flows. Flows are largely contained in the channel. Three peak flow ratings across period of record.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5) and in August 2024 (WINFAP Files v13). Peak flows are rejected pre-1975 pending clarification of control and datum history.	The headwaters drain exposed moorland of the Lammermuir Hills. Bedrock mostly impermeable predominantly overlain by superficial deposits (thin soils). Silurian/Devonian sedimentaries. Land use predominantly arable with some forest. No significant catchment changes known.	Flashy response. Low flows are affected by industrial and agricultural abstractions.
20004	East Peffer Burn at Lochhouses	31.1	NT6100082403	361000.0	682403.0	56°01'58.5195"N 2°37'38.7167"W	56.03292	-2.62742	East Peffer Burn	Lochhouses	3.5	SEPA-SE	15026	20	1967-01-01	1993-03-31	MIS	11.0	2.2	19.4	true	false	false	false	false	false	false	false	false	false	false	false	false	I	1967-01-01	1993-03-31	0.207	0.001	1992-06-23	1992-06-23	15.29	1982-01-04	1982-01-04	0.011	0.041	0.074	0.391	0.707	0.36	9587	9556	99.677				3.6	15.2	30.7	80.9	181.5	609	618	0.111	0.7383	0.1323	0.0038	0.0119	0.1172	0.746	0.1059	0.023	0.0064	0.2272		0.7728		0.3777		0.4983	0.36	0.379	0.978	40.0	36.92	34.8	44.5	8.3	14.2	7.29	41	63	0.21	3.6	30.52	0.802	0.902	0.136	0.0001			0.0007					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station on the East Peffer Burn with hydrometric issues at high flows.	Crump weir and trapezoidal flume in parallel.	Low flows are measured accurately but the low gradient and dense vegetation result in drowning during high flows. Second recorder d/s for non-modular computation is no longer used. Since 1990 a farmer's weir d/s has led to problems of drowning.		The catchment is composed of flat arable land developed upon Boulder Clay; impervious strata below.	Abstraction for spray irrigation seriously affects low flows during dry summers.
20005	Birns Water at Saltoun Hall	93.0	NT4568568715	345685.0	668715.0	55°54'30.4510"N 2°52'13.4061"W	55.90846	-2.87039	Birns Water	Saltoun Hall	71.3	SEPA-SE	14872	20	1976-01-01	2001-12-31	VA	58.0		8.2	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1965-01-01	2001-12-31	0.955	0.072	1969-09-08	1969-09-08	49.47	2000-11-07	2000-11-07	0.178	0.334	0.538	1.901	2.959	0.48	13514	13446	99.497	1962-02-01		18.215	71.6	135.7	217.9	348.6	495.3	800	762	0.1388	0.3929	0.3773	0.089	0.0013	0.1592	0.4325	0.3202	0.0864	0.0015	0.7165	0.0422	0.2413		0.1595	0.0157	0.6712	0.43	0.536	0.989	76.0	32.42	34.2	49.9	8.6	22.15	11.12	231	348	0.36	71.6	92.6	0.247	0.894	0.0297	0.001			0.0002			1961		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, catchment drains the upland moorland of the Lammermuir Hills.	Velocity area station. The section is a well defined straight channel whose banks have contained all recorded floods. Station closed May 2000 (daily record ends 1998).	The low flow control is a compound irregular broad-crested weir, pre-1973 it was a gravel bar. Rating is entirely by c/m. Before installation of the cableway the high flow rating was calculated by correlation with Spilmersford (20003) and c/m measurements from a bridge 100m u/s. Rating from current meter gaugings up to 1.5m (about 0.8 QMED), simple extrapolation beyond. All flows contained to date.		The catchment drains the upland moorland of the Lammermuir Hills. Bedrock Silurian/Devonian sedimentaries; predominantly overlain by superficial deposits. Land use arable, grassland and forest. No significant catchment changes known.	There are a few small storage reservoirs in the catchment, otherwise flows are natural.
20006	Biel Water at Belton House	51.8	NT6447376819	364473.0	676819.0	55°58'58.8905"N 2°34'15.4272"W	55.98303	-2.57095	Biel Water	Belton House	13.9	SEPA-SE	116001	20	1973-01-01	1998-12-01	VA	70.0		30.8	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1973-01-01	1998-12-01	0.557	0.098	1973-10-05	1973-10-05	22.07	1981-10-02	1981-10-02	0.145	0.269	0.368	0.959	1.488	0.62	9466	9460	99.937	1972-01-01	2000-06-01	11.748	15.1	76.6	160.1	317.8	441.4	745	742	0.1425	0.3952	0.3479	0.1093	0.0029	0.1182	0.5117	0.2503	0.1148	0.0036	0.4355		0.5645		0.1435		0.6998	0.43	0.525	0.981	104.6	34.06	43.5	54.7	9.3	20.66	11.06	178	342	0.38	15.1	57.55	0.16	0.83	0.0187	0.0001			0.0008			1971		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal broad-crested weir. Station closed May 2000 (daily record ends 1998).	Velocity area station. The section is a well defined straight channel whose banks have contained all recorded floods. Station closed May 2000 (daily record ends 1998).	An irregular broad-crested weir of gabions was installed in Sept 1979. The rating has changed slightly as the control has settled. Rating for Sept 1979 to Jan 1993 is good; derived from current meter gaugings up to 1.4m (about 2.1 QMED), simple extrapolation beyond. Other periods have weaker ratings based on spot gaugings <0.4 QMED.		The catchment drains part of the NE Lammermuir Hills. Predominantly moorland with arable downstream. Geology: Silurian and Ordovician sedimentary rocks. No significant catchment changes known.	Flow regime is flashy and broadly natural.
20007	Gifford Water at Lennoxlove	64.0	NT5110871699	351108.0	671699.0	55°56'09.0576"N 2°47'03.1051"W	55.93585	-2.7842	Gifford Water	Lennoxlove	51.4	SEPA-SE	14874	20	1973-01-01		VA			19.7	true	true	true	true	false	false	true	true	false	true	false	false	true	N	1973-01-01	2023-09-30	0.791	0.092	2020-08-10	2020-08-10	46.09	1983-05-28	1983-05-28	0.166	0.3	0.466	1.626	2.328	0.58	18535	18528	99.962	1973-01-01		16.6	50.6	98.1	196.2	390.0	525.9	790	770	0.1534	0.3377	0.3116	0.1907	0.0025	0.1617	0.3983	0.2703	0.1612	0.0057	0.5457		0.4543		0.128	0.0002	0.5709	0.43	0.527	0.977	112.5	32.77	40.3	53.1	9.0	20.82	11.75	221	345	0.39	50.6	67.78	0.246	0.681	0.0294	0.0			0.0004					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, on Gifford Water that drains the steep moorland slopes of the Lammermuir Hills.	Velocity area station. The recorder is sited immediately d/s of a footbridge on a slight bend in a natural channel.	The low flow control is a stable rock bar. The likely high flow control is a bend in the channel. One flood rating derived from current meter gaugings up to 1.585m with 25.2 cumecs measured. Flow estimations above the highest gauging are based on simple extrapolation of the rating. The flood rating segment was revised in 2016 and then again in 2021. Archive notes mention of issues with the inlet pipe including a tendance to becoming blocked during low flows and suffering from velocity drawdown at higher flows. `It was also noted that a stilling chamber was constructed but has been washed into the channel and needs to be replaced`. There was no date assigned to this note.	A large tree fell into the channel and was present between late 2013 and early 2014, causing possible gravel accumulation (resulting in lower flows from higher levels). Tree removed in early 2014, but low flows from then to present are suspect due to uncertainty in rating. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5) and then again in August 2024 (WINFAP Files v13).	Mostly low-lying catchment with headwaters rising quite steeply. Bedrock predominantly Silurian and Ordovician; predominantly overlain by superficial deposits. The catchment drains the steep moorland slopes of the Lammermuir Hills. Arable land use dominates the lowlands with some forest. No significant catchment changes known.	The flow regime is natural and flashy.
21001	Fruid Water at Fruid	23.7	NT088205	308800.0	620500.0	55°28'11.2685"N 3°26'39.0172"W	55.4698	-3.44417	Fruid Water	Fruid	277.0	LRWD		21	1959-01-01	1968	TP		15.8		true	true	false	true	false	false	false	false	false	false	false	false	false	SP	1959-10-01	1968-09-30	0.659	0.062	1959-10-01	1959-10-11	10.56	1960-02-03	1960-02-03	0.122	0.159	0.227	1.758	2.735	0.32	3288	3137	95.408	1947-10-01	1968-06-01	19.1	297.5	335.4	455.2	644.9	804.7	1753	1702	0.0204		0.6835	0.2466		0.033		0.6727	0.2441				1.0			0.0577	0.4	0.72	0.392	0.779	221.2	45.21	46.2	64.1	11.0	10.35	5.27	474	333	0.29	297.5	22.01	0.14	0.947	0.011	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound sharp-edged weir. Flows affected by Fruid Reservoir and diverted to Talla Reservoir.	Compound sharp-edged weir (9m wide) about 3km above the confluence with the Tweed. Fruid Reservoir opened 1968 for public water supply after station closed.	Flows in excess of 15.8cumecs are truncated and have to be estimated (this is said to occur once or twice per year). Theoretical rating for weir.	Captures 1959 minimum that predates reservoir.	Mainly Silurian rock and boulder clay. Peat on high ground. High moorland; rough pasture; tree cover.	21.4 sq.km (90%) of catchment area controlled. Aqueduct diverts water to Talla Reservoir from 1954 onwards.
21002	Whiteadder Water at Hungry Snout	45.6	NT663633	366300.0	663300.0	55°51'42.1104"N 2°32'23.9316"W	55.8617	-2.53998	Whiteadder Water	Hungry Snout	215.0	LRWD		21	1955-01-01	1968-12-31	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	SP	1959-10-01	1968-09-30	1.004	0.079	1959-11-10	1959-11-11	31.46	1966-08-04	1966-08-04	0.137	0.363	0.584	2.051	3.172	0.5	3288	3288	100.0				213.1	284.0	364.2	438.8	534.5	991	909	0.0277		0.2292	0.7254	0.0004	0.0244	0.0065	0.2307	0.7205	0.0005			1.0			0.0123	0.0189	0.43	0.418	0.871	126.9	44.71	49.9	62.5	10.2	14.79	7.1	363	70	0.19	216.2	46.02	0.105	0.751	0.0087	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested weir in the Lammermuir Hills. Flows affected by abstraction.	Broad-crested weir (~12m wide) with cableway and central concrete flume about 16km NW of Duns. Water abstraction point just u/s of the station.	Theoretical rating.	Flows in excess of 11.6cumecs are truncated and have to be estimated.	Principally impervious Silurian formations. Upland catchment. Rough pasture.	Responsive regime but impounding reservoir constructed u/s during the 1960s, completed in 1968. The weir is associated with a water supply diversion for an amount up to 0.1cumecs.
21003	Tweed at Peebles	694.0	NT2582140017	325821.0	640017.0	55°38'52.8236"N 3°10'48.8884"W	55.64801	-3.18025	Tweed	Peebles	155.0	SEPA-SE	14979	21	1959-01-01		VA	220.0		6.6	true	true	false	true	false	false	false	true	false	false	false	false	false	SP	1959-10-01	2023-09-30	16.139	1.851	2003-09-01	2003-09-01	306.7	2015-12-05	2015-12-05	3.375	6.646	10.27	35.02	47.87	0.55	23376	23376	100.0	1939-06-01		188.623	156.8	220.2	323.4	539.2	838.0	1199	1140	0.1477	0.0652	0.5252	0.2476	0.0084	0.1822	0.0694	0.5269	0.2113	0.0055	0.0398	0.0913	0.8689		0.0877	0.0708	0.3687	0.56	0.517	0.974	181.0	37.16	37.7	49.7	9.4	49.87	25.22	355	25	0.05	156.8	698.12	0.615	0.854	0.0506	0.0019			0.0025			1938..1940	1939-05-28..1940-12-28	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The old gauging station at Peebles was in operation from 1939 by the then Department of Agriculture. It was located 360m upstream from the current station and was attached onto Priorsford suspension bridge. In 1959 the station was moved 360m downstream to it current location. It is a velocity area station in a natural section around 45m wide and with a stable gravel bed control. There are two water supply reservoirs in the upper Tweed Catchment.	Velocity area station with cableway. From 1939 to 1959 levels measured at Priorsford Bridge about 360m u/s.	The Priorsford gauging station, located 360 meters upstream of the current Peebles station, began operation on 28/05/1939. The well and hut were positioned on the downstream side of the Priorsford suspension bridge, with the gauge board on the opposite buttress. A Glenfield and Kennedy chart recorder documented water levels. The station was relocated downstream on 14/07/1959 to a more stable section with a 45-meter-wide gravel bed control. This site provided more reliable measurements, though the stilling well sometimes bottomed out at low water levels. The records at Priorsford stopped during WWII from 28/12/1940 to 13/08/1948, hastilty resuming in time thanks to recorder Mr. Scott to document the significant August 1948 flood. SEPA digitized the Priorsford and Peebles records up to 01/01/1986. The records from 1939 to 1969 were digitized by Mallon Technology Ltd directly from the original charts, while microfilm records from 1969 to 1986 were digitized in-house by an intern in 2016 using Un-Scanit software. This process created a continuous 15-minute digital record from 13/08/1948 to the present. The period from 18/12/1968 to 01/01/1986 underwent detailed quality control, focusing on records captured from microfilm and transitioning from Imperial to Metric measurements. Editing comments were logged in WISKI, with limited quality control applied to earlier periods (1948-1968) for AMAX peaks, using visual inspections and comparisons with other data sources. Significant floods in 1948 and 1949 required corrections, with the most reliable stage figures derived from observer records and other sources. Due to the absence of direct gauging data at Priorsford, flow records for the station were generated using hydraulic modelling conducted by JBA in 2022. This model also accounted for a rail bridge that existed downstream of the Priorsford suspension bridge, dismantled around 1950. The model included two rating curves, one for the period before the bridge was removed and another for after. This adjustment helps ensure that the flow records accurately reflect historical conditions, though the exact date of the bridge removal is still being established. The August 1948 flood was a significant event that saw the station being hastily reactivated. The digitized peak for 11/08/1948 was later adjusted to align with a contemporary observer record, which indicated the peak occurred on 13/08/1948 at a stage of 3.658 meters. The digitized trace initially recorded a higher peak but was corrected based on more reliable observer notes. The January 1949 flood had a truncated chart trace, flat-lining at a stage of 3.353 meters due to mechanical limitations. Handwritten annotations on the chart suggested higher peak levels, with 4.115 meters being adopted after editing, though another figure of 4.318 meters could also be justified. The peak recorded for the 1954 flood closely matched the observers notes, requiring no further adjustments. For Water Year 1966, the peak event recorded on 27/02/1967 was manually inserted into the record, as the chart for that period was missing. Multiple peak flow ratings across period of record.	Digitising and flow modelling work in 2022 allowed the revision of flows from 1948 to 1959 and the combined record from the old and new station provides a continuous flow record from 1948. The addition of these 11 years from the old station is significant as it includes the three largest flood events on record. For the current station post 1959, the optimal flood rating with a modelled floodplain segment was applied through the station record for the 2017 data submission and these flow records have not been amended in the 2023 data submission. However, prior to 18/12/1968 there is low confidence in POT data. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Upland catchment. Bedrock mostly impervious Palaeozoic and igneous formations with substantial superficial deposits in the valleys. Hill grazing predominates; some improved grassland to N; elsewhere some forest and arable. Notable floodplains. Fruid Reservoir (1968).	Storage in Talla, Fruid, Baddinsgill and West Water Reservoirs for public water supply - overall runoff is diminished. Monthly naturalised flows available. Fruid Reservoir was built in the upper catchment in 1967 to supplement the water supply from the adjacent. Talla reservoir (1905). Its worth noting the addition of Fruid reservoir part way through the station record.
21005	Tweed at Lyne Ford	373.0	NT2059739747	320597.0	639747.0	55°38'41.1169"N 3°15'47.3571"W	55.64475	-3.26315	Tweed	Lyne Ford	167.0	SEPA-SE	14973	21	1961-01-01		VA	227.0		9.0	true	true	false	true	false	false	false	true	false	false	false	false	false	SP	1961-10-01	2023-09-30	9.674	1.154	1984-08-27	1984-08-27	185.5	1974-01-30	1974-01-30	2.106	3.976	6.009	20.62	28.77	0.54	22645	22645	100.0	1961-03-13		140.3	170.0	222.6	359.8	579.5	838.0	1311	1255	0.1669	0.0536	0.5029	0.2645	0.0052	0.1839	0.0534	0.5235	0.229	0.0035		0.0301	0.9699		0.0644	0.0555	0.3194	0.66	0.507	0.965	202.6	37.73	39.9	52.7	9.9	42.68	23.58	379	341	0.08	170.1	377.18	0.623	0.789	0.0481	0.0008			0.0016			1960		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Flows affected by abstractions and compensation releases from Fruid and Talla Reservoirs.	Velocity area station with cableway; about 20m wide natural section on straight gravel bedded reach.	Left bank overtopped during large floods (>2m). Slight seasonal weed growth effect on rating. Multiple peak flow ratings across period of record.	Monthly naturalised flows available. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Upland catchment. Bedrock mainly Silurian shale with alluvial gravel in valley bottoms. Land use principally hill grazing; some forest. Fruid Reservoir (1968). Notable floodplain.	Runoff diminished by abstractions from Fruid and Talla Reservoirs for public water supply - compensation releases also influence flow regime.
21006	Tweed at Boleside	1500.0	NT4982333376	349823.0	633376.0	55°35'29.1022"N 2°47'51.7203"W	55.59142	-2.7977	Tweed	Boleside	94.5	SEPA-SE	533744	21	1961-01-01		VA	808.0		6.7	true	true	true	true	false	false	true	true	false	false	true	false	true	SP	1961-10-01	2023-09-30	37.529	3.457	1972-10-07	1976-08-27	632.3	2015-12-05	2015-12-05	7.02	14.9	23.82	82.01	113.0	0.5	22645	22645	100.0	1961-07-11		398.45	94.2	212.5	341.5	529.3	838.0	1232	1164	0.1983	0.0529	0.4671	0.2679	0.0071	0.2394	0.053	0.4901	0.2057	0.0052	0.0184	0.0423	0.9392		0.0463	0.0843	0.3462	0.58	0.496	0.963	191.9	38.34	38.3	50.7	9.6	83.97	43.88	358	77	0.07	94.2	1505.54	0.647	0.937	0.0443	0.0021			0.0023			1960		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, central in the Tweed basin and marks the divide between hilly uplands and lowland areas.	Good rated straight section (~55m wide) with stable gravel bed and a uniform cross section and velocity profile. Cableway (25m d/s). Reach is used for salmon fishing.	Station is only gauged by cableway as it is too deep to wade, even at low flows. Downstream gravel bar acts as low flow control. Calibration affected by seasonal weed growth. Bypassing could occur on rb, but has not been witnessed. Multiple peak flow ratings across period of record.	Monthly naturalised flows available. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5) and September 2022 (WINFAP Files v11). Exceptionally high flow on 31/10/1977 supported by analogue station 21011 upstream.	Gauging site is central in Tweed basin and marks divide between hilly uplands and lowland areas. Bedrock mainly impervious Silurian formations with roughly half superficial deposit cover. Land use is hill grazing with forestry and a little arable land. Fruid Reservoir (1968) and Megget Reservoir (1982). Notable floodplains.	Resevoir storage for public water supply modifies natural flow regime but overall impact is minor. Freshets are released from Fruid and Talla Resevoirs into the River Tweed, ~ 7 miles downstream of its source. Rise in stage from these releases can be ~50mm at Boleside and are visible on the hydrograph.
21007	Ettrick Water at Lindean	499.0	NT4855131529	348551.0	631529.0	55°34'28.8846"N 2°49'03.1264"W	55.57469	-2.81754	Ettrick Water	Lindean	99.1	SEPA-SE	14990	21	1961-01-01		VA	300.0		11.5	true	true	true	true	false	false	false	true	false	false	false	false	false	S	1961-10-01	2023-09-30	15.203	0.57	1976-09-07	1976-09-07	292.0	2015-12-05	2015-12-05	1.951	5.059	8.693	35.15	49.96	0.4	22645	22645	100.0	1961-09-29		226.469	101.2	221.5	369.4	526.4	838.0	1409	1306	0.2219	0.0367	0.4418	0.2833	0.005	0.2618	0.0304	0.5066	0.186	0.0037			1.0		0.0089	0.1153	0.3992	0.67	0.443	0.928	190.4	41.68	41.3	55.5	10.2	54.52	31.16	372	94	0.13	101.5	502.74	0.651	0.767	0.0386	0.002			0.0018					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in Southern Uplands.	Velocity area station; approx. 40m wide section. Natural section with cableway about 1km before confluence with Tweed.	Low flow control by d/s gravel riffle. Gradual bed accretion is evident in the long-term stage hydrograph and possibly triggered by the large 1977 flood. Multiple peak flow ratings across period of record. With such close proximity to the downstream confluence, variable back water effects are a possibility, but there is currently too few flood gaugings to confirm this. Upper limit of rating during pre-digital period is 2m to indicate lower confidence.	Bypassing on left bank occurs at levels above 2m (e.g. Oct 2002), but the bypassing flows were not measured. Monthly naturalised flows available. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Southern Uplands. Relatively narrow impervious (mostly Silurian formations) catchment (half overlain by superficial deposits). Land use is mostly hill grazing, with some forested areas. Megget Reservoir (1982).	St Mary's Loch and Megget Reservoir (public water supply) have a minor impact on the flow regime.
21008	Teviot at Ormiston Mill	1110.0	NT7022928038	370229.0	628038.0	55°32'42.4849"N 2°28'24.1128"W	55.54513	-2.47336	Teviot	Ormiston Mill	43.2	SEPA-SE	15007	21	1960-01-01		VA	411.0		8.4	true	true	true	true	false	false	false	true	false	true	true	false	true	N	1960-11-01	2023-09-30	20.858	1.406	1984-08-31	1984-08-31	554.8	2015-12-05	2015-12-05	2.856	7.106	12.14	46.92	68.34	0.45	22979	22979	100.0	1960-10-01		336.0	42.9	122.7	236.5	354.8	610.8	1008	936	0.1996	0.2655	0.4525	0.0631	0.0144	0.2673	0.219	0.4313	0.0732	0.007	0.3587	0.0006	0.6423	0.0001	0.0163	0.0193	0.6885	0.57	0.458	0.987	117.7	42.86	34.2	44.5	9.6	62.63	33.79	239	33	0.13	42.9	1121.55	0.611	0.801	0.0464	0.0025			0.0036					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station d/s of Hawick on the River Teviot.	Velocity area station; about 45m wide section.	Natural channel control. Rock and gravel section at gauge with d/s gravel riffle giving low flow control. Rating subject to appreciable weed growth. Multiple peak flow ratings derived from current meter gaugings up to 3.4m (about 1.1 QMED), simple extrapolation beyond. Bypassing occurs on the rb (golf course side) at levels above 2.2m, and bypasses behind the cableway.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10) and September 2022 (WINFAP Files v11).	Mostly lowland catchment with upland headwaters. Mainly Silurian shale and ORS; 70% overlain by superficial deposits. Land use chiefly moorland and hill grazing with some arable farming towards the confluence with the Tweed; some forested areas in the uplands. No significant catchment changes known. Notable floodplains.	Catchment contains two small storages (Alemoor Loch, Akermoor Loch) but runoff is sensibly natural.
21009	Tweed at Norham	4390.0	NT8983647709	389836.0	647709.0	55°43'21.6807"N 2°09'48.1433"W	55.72269	-2.16337	Tweed	Norham	4.3	SEPA-SE	9514	21	1962-10-01		VA	1300.0		3.9	true	true	false	true	false	true	false	true	true	true	true	true	true	SP	1962-10-01	2023-09-30	81.715	6.974	2003-09-18	2003-09-18	1327.0	2002-10-22	2002-10-22	14.34	32.0	53.11	177.6	245.3	0.52	22280	22280	100.0	1960-01-01		834.462	4.6	82.3	255.0	450.7	838.0	1008	955	0.1516	0.2334	0.4491	0.1505	0.0105	0.1852	0.2221	0.4401	0.1413	0.0071	0.1894	0.0641	0.6972	0.0512	0.0501	0.0435	0.5254	0.49	0.495	0.981	136.0	38.88	35.7	46.8	9.3	153.09	81.11	264	67	0.1	4.6	4398.76	0.703	0.846	0.0544	0.0024			0.0032			1959		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, lowest on the River Tweed.	Lowest station on R. Tweed. Velocity-area station at very wide natural section (~120m).	Natural control - an island might be high flow control. Moderate seasonal weed growth effects on rating. Right bank floodplain floods and properties in Norham have been flooded. Cableway washed away in Oct 2002 flood; new cableway (2003) can gauge up to 4.2m. Ratings derived from current meter gaugings (before and after the datum change in Sept 1989); simple extrapolation beyond. Rating revised in 2016.	Monthly naturalised flows available. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5) and September 2022 (WINFAP Files v11). Chart data between 1959 & 1990 was digitised in 2016.	Catchment is predominantly upland. Bedrock mixed but principally impervious Palaeozoic formations; 60% overlain by superficial deposits. Moorland and hill pasture predominates; improved grasslands and arable farming below Melrose; some forest. Reservoirs in headwaters: Megget 1982, Fruid 1968.	Reservoirs in headwaters have only a small impact on the flow regime.
21010	Tweed at Dryburgh	2080.0	NT5882332088	358823.0	632088.0	55°34'50.4877"N 2°39'16.9892"W	55.58069	-2.65472	Tweed	Dryburgh	66.8	SEPA-SE		21	1960-01-01	1982	VA	1300.0		6.0	true	false	false	false	false	false	false	false	false	false	false	false	false	SP	1960-10-01	1980-12-31	42.626	2.832	1961-03-28	1961-03-28	611.7	1977-10-31	1977-10-31	8.041	18.43	28.88	92.66	124.0	0.52	7397	6667	90.131				67.0	195.7	322.9	504.1	838.0	1139	1078	0.1683	0.0786	0.4911	0.2489	0.0078	0.2047	0.0863	0.4974	0.1994	0.0069	0.0339	0.0627	0.9033		0.0367	0.066	0.3853	0.51	0.513	0.972	171.7	36.81	37.3	49.2	9.5	99.56	51.24	338	96	0.09	67.1	2091.54	0.617	0.944	0.0431	0.0028			0.003					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station which closed in 1982.	Natural section located at footbridge on wide meandering reach of river. Station closed at end of 1982; stage data only available from 1986.	Flow asymmetrical at gauge and shifting bed.	Monthly naturalised flows available.	Geology: mainly impervious (Silurian) formations with significant Drift cover. Hill grazing is the predominant land use - some forestry and a little arable farming also.	Several reservoirs modify the natural regime but overall impact is limited.
21011	Yarrow Water at Philiphaugh	231.0	NT4391127691	343911.0	627691.0	55°32'22.9046"N 2°53'25.2069"W	55.5397	-2.89034	Yarrow Water	Philiphaugh	128.0	SEPA-SE	14985	21	1962-01-01		VA	296.0		11.2	true	true	false	true	false	false	false	true	false	false	false	false	false	S	1963-10-01	2023-09-30	6.608	0.391	1976-09-05	1976-09-05	177.6	2009-11-19	2009-11-19	1.195	2.477	3.991	14.75	20.63	0.47	21915	21915	100.0	1962-08-28		89.76	128.2	250.2	412.7	561.8	838.0	1388	1347	0.1165	0.0099	0.4386	0.4109	0.001	0.1556	0.0135	0.5403	0.2677	0.0002			1.0		0.0192	0.1906	0.2768	0.7	0.443	0.875	214.6	42.11	41.2	55.7	10.1	41.71	24.15	411	105	0.16	128.8	232.46	0.454	0.727	0.0267	0.0002			0.0002			1961		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the Yarrow Water, in the Borders in the south east of Scotland.	Velocity area station; about 25m wide natural coarse gravel bedded straight section.	Control unstable. Sensibly natural regime before Megget Res. began impounding in 1982 (small overall impact on water balance), and flood peaks are also attenuated by St Mary's Loch. To date all flows contained. Peak flow ratings derived from current meter gaugings, simple extrapolation beyond.	Monthly naturalised flows available. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5) and September 2022 (WINFAP Files v11).	Upland catchment developed mainly on Silurian shale; approx half superficial deposit cover. Hill grazing is the principal land use; some forest. Megget Reservoir (1982).	Storage reservoirs: St. Mary's Loch and Megget, both used for public water supplies. Close to confluence and so backing up from the River Tweed must be influential at extreme highs.
21012	Teviot at Hawick	323.0	NT5223215869	352232.0	615869.0	55°26'03.7195"N 2°45'23.2466"W	55.43437	-2.75646	Teviot	Hawick	90.1	SEPA-SE	15001	21	1963-01-01		VA	134.0		11.1	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1963-10-01	2023-09-30	9.124	0.43	2023-06-16	2023-06-16	263.5	2015-12-05	2015-12-05	1.021	2.954	5.14	20.96	30.33	0.42	21915	21915	100.0	1963-09-18		197.421	88.8	188.2	276.2	391.4	610.8	1207	1149	0.2746	0.1252	0.5226	0.0547	0.0176	0.3569	0.0637	0.5093	0.056	0.0129	0.0391		0.9609			0.0459	0.678	0.59	0.429	0.993	151.0	43.58	38.7	50.1	10.4	33.68	18.98	283	58	0.13	88.8	324.42	0.448	0.801	0.0323	0.0061	0.76	0.18	0.0071	0.807	0.241			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the River Teviot in the east Southern Uplands of Scotland.	Velocity area station; about 30m wide natural section.	The primary control is a gravel shoal (~100m) below the station that is prone to adjustment during floods. A ford 200m downstream and a mill weir 650m downstream may be an influence on the stage discharge control at higher flows. Bypassing can occur on left bank at levels above about 2m, although this is thought to account for less the 10% of flows during extreme events. Frequent re-rating due to weed growth, but only two ratings are required across the period of record for peak flows. Gauged up to QMED with simple extrapolation beyond.	October 2005 event was exceptional. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and September 2022 (WINFAP Files v11).	Natural upland catchment. Bedrock mostly Silurian shale; predominantly overlain by superficial deposits. Hill grazing is the dominant land use but forestry is important in the headwaters (Craik Forest). Hawick is the only significant settlement. No significant catchment changes known.	Natural regime.
21013	Gala Water at Galashiels	207.0	NT4793237377	347932.0	637377.0	55°37'37.7926"N 2°49'42.4492"W	55.62716	-2.82846	Gala Water	Galashiels	120.0	SEPA-SE	9683	21	1963-01-01		VA	180.0		19.0	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1964-10-01	2023-09-30	3.734	0.192	2022-08-12	2022-08-13	78.8	1984-11-03	1984-11-03	0.502	1.268	2.271	8.351	11.92	0.5	21549	21549	100.0	1963-09-30		52.865	121.6	229.1	331.6	466.6	651.5	992	930	0.0887	0.038	0.6282	0.2435	0.0015	0.1116	0.0651	0.6225	0.198	0.0027		0.0013	0.9987			0.0513	0.3374	0.44	0.531	0.999	148.6	34.69	36.2	48.2	9.3	42.61	23.73	340	83	0.16	121.6	205.44	0.44	0.871	0.0348	0.001			0.0008					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the Gala Water draining from the Moorfoot Hills.	Velocity area station, about 15m wide.	Concrete-lined reach in industrial part of Galashiels. Gravel bed with control formed by concrete haunching over sewage pipe. Control was repaired and heightened by 120mm on 01/08/68, hence the rating change on this date. The station reach is straight with well defined banks. The channel cross section at the footbridge is slightly narrowed and this will likely be the primary control during large events. There is some confidence in extrapolating flows up to bank full at 2.5m considering the channel is well defined and the highest gauging is at 1.862m (measured flow of 83.7 cumecs). The dervied flow at 2.5m using rating QHigh1968 is 144.54 cumecs. Only the AMAX1 in 1984 was higher than bankfull, but only marginally and floodplain flow would have been negligible. The 1982 flood would have hit the footbridge and this may have impeded the flow. There is also the possibility that woody debris was trapped on the bridge during the event. The station hut, well and ramp gauge was completely rebuilt in 2016 following works to reinstate the Waverly Railway line. The control (concrete haunching over pipe) was compromised by bank erosion on the left hand side and this was repaired in 2016. As of October 2017, the control is in a bad state with concrete apron breaking up and water starting to undermine it. The upper limits of post 2015 ratings reflect this lower confidence and Peak Flow data currently is excluded from this time until the rating calibration is improved.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and September 2022 (WINFAP Files v11). Peak flows removed after 01/10/2015 due to erosion around side of weir.	Natural upland catchment draining from the Moorfoot Hills. Bedrock mainly impervious (Silurian); some overlain by superficial deposits. Land use is hill grazing with some forest and arable areas. No significant catchment changes known. Notable floodplains.	Natural regime.
21014	Tweed at Kingledores	139.0	NT1087528541	310875.0	628541.0	55°32'32.6733"N 3°24'50.2100"W	55.54241	-3.41395	Tweed	Kingledores	214.0	SEPA-SE	14972	21	1961-01-01		VA	210.0		8.3	true	true	false	true	false	false	false	true	false	false	false	false	false	SP	1961-09-01	2023-09-30	4.305	0.463	1972-10-06	1972-10-06	122.2	2009-11-19	2009-11-19	0.922	1.557	2.286	9.675	14.61	0.44	22675	22675	100.0	1961-01-01		94.576	213.7	311.5	428.3	645.7	838.0	1619	1567	0.2672	0.003	0.4504	0.2617	0.0011	0.2978	0.0045	0.4171	0.2615	0.0015			1.0		0.0399	0.1082	0.2517	0.72	0.412	0.917	224.0	45.12	45.6	62.4	10.8	23.03	12.56	453	330	0.15	214.1	138.7	0.303	0.788	0.0193	0.0004			0.0009					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station in the upper Tweed catchment.	Located on the upper River Tweed, roughly 2.5 miles downstream of Tweedsmuir village. One of the key functions is flood warning for downstream communities. Natural section with a coarse gravel bed. Work in 2022 to rationalise the rating history allowed this station to be considered for inclusion in the Peak Flow dataset. Station added to peak flows dataset in August 2024 (WINFAP Files v13).	The channel is composed of coarse gravel which is highly mobile, even under modest flows, while the inflow from the Kingledores Burn 10m downstream of the station can cause backwater effects and also scour/deposit large amounts of material from the control. The rating is calibrated with gaugings up to 2.225m, measured at 101.8 cumecs. Higher events spill into the floodplain. Although most of the flow range is contained in the channel, the station has been assigned an indicative suitability of QMED only, at least until the transition stage between channel and floodplain flow is known. One peak flow rating across period of record.	Monthly naturalised flows available.	Impervious (mostly Silurian formations) upland catchment given over mainly to hill grazing and forestry.	Exports from Fruid and Talla Reservoirs cause a significant reduction in runoff. Freshnet releases from Fruid and Talla Reservoirs cause significant spikes in runoff.
21015	Leader Water at Earlston	239.0	NT5648238801	356482.0	638801.0	55°38'26.8822"N 2°41'34.4862"W	55.6408	-2.69291	Leader Water	Earlston	103.0	SEPA-SE	14997	21	1966-01-01		VA	120.0		27.5	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1966-10-01	2023-09-30	3.374	0.252	1995-08-18	1995-08-18	125.7	1984-11-03	1984-11-03	0.469	1.061	1.955	7.413	11.05	0.5	20819	20819	100.0	1966-10-01		61.3	102.9	187.1	288.2	411.3	525.9	894	853	0.0777	0.1441	0.5135	0.2615	0.0031	0.0955	0.1712	0.4785	0.2528	0.0018	0.0585	0.276	0.6655			0.0026	0.456	0.43	0.563	0.999	106.3	33.4	35.7	47.7	9.1	31.38	18.92	292	139	0.2	102.9	239.11	0.417	0.793	0.0338	0.0013			0.0013					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the River Leader in the Scottish Borders.	Velocity area station about 30m wide.	This is an open channel station from 1984 at least. There are remnants of an old mill weir (for Rhymers Mill) on the river bank about half a mile downstream and it is likely the weir was intact up to 1984, where the stage plot indicates a major change in bed levels starting from the large flood on 03/11/1984. A period of channel adjustment is apparent for a few years after 1984 and its hypothesised that the 1984 flood knocked the weir out. The right bank is much lower in than the left bank and flood water stretches beyond the cableway on the wooded right bank. A cableway allows gauging at higher flows, although the highest gaugings up to 1.8m were carried out before 1984 and so these are not valid for rating calibration after 1984. Since then, the highest gauging is at 1.470m, measured at 57.001 cumecs. Hence the post 1984 flood estimations, of peaks reaching 2.53m, are based on simple extrapolation and of low confidence. The low flow section control is a gravel bar that is fairly insensitive and not conducive to accurate low flow estimation.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Upland catchment draining from the Lammermuir Hills. Bedrock Silurian shale and ORS; some superficial deposit cover. Land use hill grazing with arable farming at lower levels; some forest. No significant catchment changes.	Natural flow regime.
21016	Eye Water at Eyemouth Mill	119.0	NT9418563565	394185.0	663565.0	55°51'54.8187"N 2°05'40.1423"W	55.86523	-2.09448	Eye Water	Eyemouth Mill	2.9	SEPA-SE	15017	21	1967-01-01		VA	92.0		23.8	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1967-10-01	2023-09-30	1.304	0.041	1995-08-17	1995-08-17	49.73	2021-02-05	2021-02-05	0.142	0.349	0.622	2.848	4.547	0.45	20454	20454	100.0	1967-10-01		40.178	5.0	67.2	151.2	226.0	411.3	747	730	0.1316	0.4621	0.3787	0.022	0.0053	0.127	0.5576	0.2642	0.0436	0.0074	0.0331	0.2046	0.7623		0.0282		0.6836	0.29	0.597	0.997	68.7	30.2	33.3	44.6	8.7	37.24	15.7	150	114	0.12	5.3	118.86	0.313	0.854	0.0356	0.0007			0.0021					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, lowest on the Eye Water.	Velocity area station, about 22m wide.	Round-top, flat-V concrete weir acts as an informal low flow control that drowns out quickly. Floods have deposited gravel in the station section, from around 2012, raising the bed and reducing the influence of the weir. The construction date of the weir has to be confirmed and may relate to one of the shifts in the flood rating archive. Steep high banks on both sides. 600m u/s from Eyemouth harbour; high spring tides can reach site.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Lowland catchment. Bedrock Silurian shale and ORS with predominantly superficial deposit cover. Agriculture is the primary land use; hill grazing in the headwaters, arable below; some forest. No significant catchment changes known.	Largely natural regime (though irrigation impacts on low flows).
21017	Ettrick Water at Brockhoperig	37.5	NT2341313150	323413.0	613150.0	55°24'22.5967"N 3°12'39.8159"W	55.40628	-3.21106	Ettrick Water	Brockhoperig	259.0	SEPA-SE	14987	21	1965-01-01		VA	200.0		18.1	true	true	true	true	false	false	true	true	false	true	false	false	true	N	1965-10-01	2023-09-30	1.948	0.068	1984-08-26	1984-08-26	54.42	2009-11-19	2009-11-19	0.204	0.586	1.003	4.523	7.046	0.33	21184	21184	100.0	1965-08-27		60.892	257.6	343.1	477.6	585.4	691.4	1936	1740	0.2688		0.4288	0.3024		0.3226	0.0023	0.4828	0.192	0.0003			1.0			0.0735	0.4052	0.72	0.421	1.0	241.5	43.7	49.9	67.2	11.6	11.98	5.88	470	85	0.12	258.3	38.59	0.213	0.721	0.012	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the Ettrick Water.	Velocity area station (~12m wide river section) on straight reach with rocky bed.	Control is a series of rocky bars and falls. Turbulent flow at higher stages. Heavy gravel load in floods. All flows contained to date. Icing in winter. Peak flow ratings derived from current meter gauging up 1.8m (about QMED), simple extrapolation beyond. No access at high flows because the road floods. The water is iron rich and deposits in the inlet pipes which have to be cleared.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Natural steep upland catchment containing moorland and significant forestry. Very responsive, bedrock principally impervious Silurian formations. Afforestation.	Natural regime.
21018	Lyne Water at Lyne Station	175.0	NT2094940033	320949.0	640033.0	55°38'50.5727"N 3°15'27.5252"W	55.64738	-3.25765	Lyne Water	Lyne Station	168.0	SEPA-SE	14974	21	1968-01-01		VA	36.0		7.7	true	false	false	false	false	false	false	true	false	false	false	false	false	SP	1968-10-01	2023-09-30	3.139	0.483	2003-10-18	2003-10-18	59.66	1994-12-11	1994-12-11	0.702	1.27	2.013	6.748	9.318	0.57	20088	20080	99.96				170.0	221.4	287.1	417.9	564.4	1005	943	0.1239	0.1158	0.5602	0.1812	0.0113	0.1803	0.101	0.5475	0.1633	0.004	0.1549	0.3012	0.5439		0.1518	0.0717	0.4417	0.49	0.538	0.976	131.2	36.46	33.6	43.9	8.5	30.83	16.43	304	128	0.07	170.0	174.0	0.554	0.93	0.057	0.0014			0.0018					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station upstream of the confluence with the River Tweed.	Velocity area station.	Flow fully concentrated by arches of bridge below station.	Monthly naturalised flows available.	Upland catchment. Mainly Silurian shale with Old Red Sandstone and considerable superficial deposits of sand and gravel in centre of catchment. Mostly hill grazing and grassland; forest.	Storage in - and abstraction from - Baddingsgill and West Water Reservoirs influence the flow regime; overall impact on annual runoff is limited.
21019	Manor Water at Cademuir	61.6	NT2170136892	321701.0	636892.0	55°37'09.4342"N 3°14'41.2980"W	55.61929	-3.24481	Manor Water	Cademuir	197.0	SEPA-SE	14977	21	1968-01-01		VA	58.0		14.5	true	true	false	true	false	false	false	false	false	false	false	false	false	P	1968-10-01	2019-09-30	1.644	0.117	1994-07-21	1994-07-21	27.12	2015-12-05	2015-12-05	0.328	0.693	1.106	3.474	4.698	0.58	18627	18627	100.0	1968-09-01		25.609	197.2	262.1	463.5	648.2	815.9	1466	1344	0.1032	0.0095	0.3058	0.5801	0.0013	0.1797	0.0312	0.3611	0.4265	0.0014			1.0			0.208	0.2256	0.72	0.482	0.997	273.0	40.54	40.6	52.6	9.9	14.18	7.69	458	10	0.17	197.2	59.95	0.434	0.564	0.0312	0.0			0.0			1967..1968	1967-10-01..1969-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on Manor Water. Water surface can freeze in winter.	Velocity area station (section ~10m wide).	Artificial control consisting of a flat concrete bar with stone pitched banks. The historic rating record suggests the weir was constructed on 30/06/69. If the station operated before this date, its assumed it was as a natural open channel control. The site is situated at end of straight reach with a bend just below a bar. Water surface can freeze in winter necessitating ice corrections. Bypassing occurs at higher flows on the lb. Peak flow rating derived from current meter gaugings up to 1.1m (about 0.8 QMED), with a simple extrapolation beyond. Since the 90s the site has only been gauged up to 0.6m/10cumecs. The channel suffers from bank erosion and upstream erosion is thought to have increased the amount of bypassing during large events. The increased channel instability was likely triggered by the large flood of 30/12/15, known as Storm Frank. The weir has also become badly eroded. Considering the bank/weir erosion and the lack of high gaugings, there is little confidence in flows above QMED.	Monthly naturalised flows available. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). No Peak Flow data after December 2015 following damage to station. No Daily Flow Data after September 2019 due to ongoing degradation of the weir.	Steep upland catchment developed on Silurian shale, some of which is overlain by superficial deposits. Land use mostly hill grazing; some forest. No significant catchment changes known.	Runoff is slightly diminished by an u/s abstraction (Langhaugh Intake). Very responsive catchment.
21020	Yarrow Water at Gordon Arms	155.0	NT3090824757	330908.0	624757.0	55°30'42.0011"N 3°05'44.1872"W	55.51167	-3.09561	Yarrow Water	Gordon Arms	226.0	SEPA-SE	14984	21	1967-01-01		VA	90.0		9.0	true	true	true	true	false	false	false	true	false	false	false	false	false	SP	1967-06-01	2023-09-30	4.924	0.147	1976-08-28	1976-08-28	109.7	2009-11-19	2009-11-19	0.991	1.952	2.987	10.77	15.39	0.48	20576	20576	100.0	1967-05-30		55.021	226.4	295.5	455.2	595.2	838.0	1545	1496	0.1025	0.0013	0.3603	0.5008	0.0002	0.1448	0.0066	0.4775	0.3369	0.0002			1.0			0.2878	0.2128	0.72	0.395	0.82	219.9	46.25	44.6	60.2	10.6	23.28	11.89	451	101	0.17	226.4	153.94	0.307	0.651	0.0187	0.0			0.0			1966..2022	2015-12-30..2023-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, from 1982 flows are highly artificial with Megget Reservoir used for public water supplies and operated in conjunction with St Mary's Loch.	Velocity area station d/s of road bridge on approx. 20m wide section with rough gravel bed.	Natural open channel gravel control. Asymmetrical flow due to upstream bend. Stage correction due to ice has been a feature at the station. Gravel extraction is mentioned in the station notes. Damming of St. Mary loch outlet in August 1976 resulted in very low flows in this period. Flows largely contained in channel. Peak flow ratings derived from current meter gaugings up to 1.598m, with a measured flow of 72.9 cumecs. Beyond this, flows are based on simple extrapolation. Extensive channel change and site deterioration occurred following the large flood on 30/12/2015 and subsequent upstream channel and bank stabilisation works. From this point the station has been operated as level only with no check gaugings. Calculated flows after 30/12/2015 are based on the pre 2015 ratings and hence are all flagged as suspect/unchecked. The upper rating segment/relationship will be relatively less impacted by the 2015 channel changes and data users may find these unchecked flood estimates of some value, although to be used with caution. Post 2015 flows are marked as rejected in NRFA Peak Flows to reflect this uncertainty.	Low flow in August 1976 due to damming of gravel bar prior to gravel extraction. Monthly naturalised flows available. Gauging suspended in 2015 due to altered flow causing cableway failure and gravel build-up at station. Peak flows after 30/12/2015 are rejected (see hydrometric description). Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Upland catchment. Impervious bedrock (Silurian formations) with half superficial deposits. Land use hill grazing with some forestry. Megget Reservoir (1982).	St Marys Loch (few km upstream) attenuates floods significantly. Natural regime until 1982. From 1982 flows are highly artificial with Megget Reservoir used for public water supplies and operated in conjunction with St Marys Loch.
21021	Tweed at Sprouston	3330.0	NT7522735405	375227.0	635405.0	55°36'41.7899"N 2°23'41.3643"W	55.61161	-2.39482	Tweed	Sprouston	24.5	SEPA-SE	15012	21	1969-01-01		VA	1600.0		6.6	true	true	true	true	false	false	false	true	false	false	true	false	false	SP	1969-06-01	2023-09-30	67.184	6.341	1995-09-02	1995-09-02	1082.0	2015-12-05	2015-12-05	10.96	24.87	42.88	149.3	208.2	0.5	19845	19845	100.0	1970-01-01		758.675	23.4	141.3	282.2	465.0	838.0	1077	1014	0.1749	0.1645	0.4677	0.1768	0.0109	0.2209	0.1555	0.462	0.1495	0.0075	0.169	0.0394	0.7921	0.0	0.0306	0.0477	0.5079	0.53	0.496	0.978	148.8	38.7	35.9	47.1	9.5	125.01	64.05	296	67	0.09	23.4	3345.76	0.651	0.9	0.046	0.0028			0.0035					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, on the River Tweed in the Scottish Borders.	Velocity area station. Wide section (about 100m) on gentle bend in river. New cableway (2003) can gauge flows up to 4.35m stage.	The station is affected by seasonal weed growth effects and seasonal ratings have been adopted for low flows. There are remnants of an old mill weir 200m downstream as well as a more prominent mill weir 2km downstream. Both of these weirs will influence the station control at medium to high flows at least, but likely drown out during larger floods. Flows are largely contained or are at least within the range of the cableway reach. The peak flow rating is derived from gaugings up to 4.015m. The 4.015m gauging was on 20/11/2009 and had a measured flow of 1059 cumecs.	Monthly naturalised flows available. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A mix of upland and lowland. The bedrock geology is dominated by impervious Silurian formations (with some deposits). Hill grazing predominates with improved grassland and arable farming in the lower catchment; some forest in headwaters. Some reservoirs in the headwaters were established during the period of record (Fruid Reservoir 1968, Megget Reservoir 1982).	Public water supply reservoirs in headwaters have a minor impact on the flow regime.
21022	Whiteadder Water at Hutton Castle	503.0	NT8807755014	388077.0	655014.0	55°47'17.8221"N 2°11'30.1117"W	55.78828	-2.1917	Whiteadder Water	Hutton Castle	29.0	SEPA-SE	15020	21	1969-01-01		CC		175.0	7.2	true	false	false	false	false	true	false	false	true	true	true	true	true	SP	1969-09-01	2023-09-30	6.702	0.423	1973-11-26	1973-11-26	223.2	2008-09-06	2008-09-06	1.161	2.228	3.789	13.91	21.29	0.51	19753	19753	100.0				28.1	86.5	229.8	381.9	534.5	861	814	0.1152	0.2143	0.4175	0.2449	0.0052	0.1092	0.2985	0.2978	0.2878	0.0043	0.3595	0.1856	0.4549		0.0329	0.0127	0.4696	0.35	0.518	0.981	90.1	37.54	37.9	50.7	9.0	57.16	31.79	236	120	0.21	28.2	502.23	0.459	0.75	0.047	0.0009			0.0018					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir with theoretical rating.	Compound Crump profile weir, about 30m wide. Removed from peak flows dataset in September 2020 (WINFAP Files v9).	Catchment contains Whiteadder and Watchwater Reservoirs which can have substantial effects - particularly during low flows. Overtopping of wing walls and bypassing of station has occurred during floods above 2.3m. Theoretical rating. Charts originally recorded flows. Data removed from peak flows dataset due to suspect stage data pre-1986; no non-modular correction in rating; very few high flow gaugings carried out.	Extremely low winter flows in 1973 (e.g. 26/11) due to river icing over during freezing conditions.	Upland catchment with mixed geology, mostly impervious Palaeozoic formations with significant drift cover. Hill grazing at high levels with arable farming below about 150m; forest. No significant catchment changes known.	Catchment contains Whiteadder and Watchwater Reservoirs for public water supply. Monthly naturalised flows available.
21023	Leet Water at Coldstream	113.0	NT8398039652	383980.0	639652.0	55°39'00.4932"N 2°15'22.0450"W	55.65014	-2.25612	Leet Water	Coldstream	12.1	SEPA-SE	15013	21	1970-01-01		VA		3.0	11.9	true	false	false	false	false	false	true	true	true	true	true	false	true	N	1970-11-01	2023-09-30	1.046	0.001	1995-08-21	1995-08-23	71.77	2002-10-23	2002-10-23	0.024	0.123	0.335	2.345	4.194	0.31	19327	19327	100.0				12.0	56.2	74.7	148.9	220.6	714	671	0.0527	0.7595	0.1789	0.0005	0.0075	0.046	0.8418	0.0981	0.0077	0.0062	0.9066		0.0934		0.0002		0.9719	0.3	0.388	0.999	34.5	37.88	31.5	41.4	8.3	28.78	16.96	88	117	0.31	12.0	112.95	0.831	0.968	0.1123	0.0009			0.0022					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station on the Leet Water upstream of the confluence with the River Tweed. This station is affected by backwater effects at high flows.	Velocity area station.	Artificial control containing trapezoidal flume for low flow measurement. Station performs well at low and medium flows, but poor performance at high flows. Inconsistent backwater effects from bridge below station and R. Tweed, can be up to 3.5m.		A relatively flat (for this region) lowland catchment developed on Boulder Clay overlying calciferous s'st. Mainly arable farming.	The station can record very low flows (given the size of the catchment (113km2) due to spray irrigation.
21024	Jed Water at Jedburgh	139.0	NT6558921368	365589.0	621368.0	55°29'05.6351"N 2°32'45.8323"W	55.4849	-2.54606	Jed Water	Jedburgh	65.6	SEPA-SE	15006	21	1971-01-01		VA	112.0		10.2	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1971-08-01	2023-09-30	2.399	0.257	1976-09-06	1995-08-20	84.84	1984-11-03	1984-11-03	0.417	0.763	1.22	5.353	8.444	0.41	19054	19054	100.0	1972-01-01		68.934	69.5	158.7	240.8	361.0	578.0	975	914	0.3217	0.2217	0.3471	0.088	0.0188	0.4563	0.1463	0.3192	0.0691	0.0088	0.7893	0.0051	0.2064	0.0006		0.0192	0.6458	0.57	0.437	0.997	111.6	43.99	32.7	43.2	9.5	33.79	18.67	253	6	0.25	69.5	139.95	0.382	0.884	0.0284	0.0045			0.0062	0.677	0.219	1971		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Flows are largely natural and uncontrolled.	Velocity area station on straight reach, about 16m wide. This station replaces one 0.5km downstream, installed in 1959, with rather poor and variable daily level readings.	Natural channel control. The low flow control is a rock ledge and then at higher flows the control transitions to a downstream channel bar. The peak flow ratings are derived by current meter gaugings up to 2.577mm, measured at 69.6 cumecs (about 1.1 QMED). Higher flood estimates are based on simple extrapolation above the highest gauging, which provides some confidence in flows estimates up to bank full around 3m. Above 3m, the flow breaks out on the left bank into the industrial park. The peak flow rating QHigh1972 is applied throughout the record, with the exception of a two-year period between 27/01/2016 and 24/01/2018, when a bank collapsed downstream at a location where the river cuts into a steep bluff. Subsequent high flows eventually washed out the debris and the channel control returned to the pre slip state by 24/01/2018. The channel control is thought to have recovered in steps when flows were high enough to erode material from the landslip. The initial state after the slip from 27/01/2016 is represented by rating 17, which is based on gauging up to 1.671m/23.3 cumecs measured. Gauging evidence shows that the higher flow on 22/11/2016 caused sufficient erosion to produce a clear control shift and hence rating 18 was developed using available gaugings up to 1.478m/18.998 cumecs measured. A transition calculation has been used around ratings 17 and 18 to represent the ongoing erosion of material during several smaller peaks until the flood of 23/01/2018, where a flood gauging indicates the river control had returned to the pre-slip state. Higher ranking events are around 1m above the highest gauging and 0.5m above bankfull. Considering the high flow estimates are based in simple extrapolation, this station is tentatively assigned pooling status with the knowledge that the banks are well defined and uniform up to bankfull. Additionally, the out-of-bank spill out is largely ponding rather than flow. Some user discretion on suitability is recommended.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12) and in August 2024 (WINFAP Files v13).	An upland, mainly Old Red Sandstone catchment (approx. 2/3 overlain by superficial deposits). Land use mainly hill grazing with some forestry. No significant catchment changes known.	Flows are largely natural and uncontrolled.
21025	Ale Water at Ancrum	174.0	NT6341724433	363417.0	624433.0	55°30'44.2057"N 2°34'51.0134"W	55.51228	-2.58084	Ale Water	Ancrum	61.2	SEPA-SE	15002	21	1972-01-01		VA	52.0		16.6	true	true	true	true	false	false	false	true	false	false	false	false	false	SP	1972-10-01	2023-09-30	2.862	0.096	1995-08-17	1995-08-18	67.52	2015-12-05	2015-12-05	0.229	0.675	1.422	6.969	10.43	0.41	18627	18627	100.0	1973-01-01		51.665	64.0	132.9	252.6	341.4	447.4	993	926	0.1783	0.2443	0.4544	0.1115	0.0016	0.2276	0.2442	0.4352	0.0823	0.0025	0.2076		0.7924		0.0001	0.0047	0.8546	0.58	0.391	0.948	87.2	46.62	32.7	42.5	9.3	48.28	26.49	242	82	0.17	64.0	173.79	0.681	0.852	0.0605	0.0002			0.0003					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in the Scottish Borders.	Velocity area station at natural river section, approx. 15m wide.	Low flow control by solid rock bar very close to gauge. Bypassing could possibly occur on rb, but was never witnessed. Peak flow ratings derived from current meter gaugings up to 2.4m (about 1.4 QMED), simple extrapolation beyond.	Monthly naturalised flows available. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	An upland catchment - mostly Silurian shale; mix of high and predominantly low permeability with most of catchment covered by superficial deposits. Hill pasture predominates; some forest cover. No significant catchment changes known.	Runoff is marginally diminished by Alemoor Loch in the headwaters, which is used for public water supplies. Also some small lochs in headwaters.
21026	Tima Water at Deephope	31.0	NT27821371	327820.0	613710.0	55°24'43.1176"N 3°08'29.8426"W	55.41198	-3.14162	Tima Water	Deephope	232.2	SEPA-SE	14986	21	1973-01-01		VA	80.0		29.5	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1973-06-01	2023-09-30	1.44	0.0	2023-06-12	2023-06-18	51.16	2011-01-15	2011-01-15	0.084	0.323	0.623	3.543	5.612	0.25	18384	17654	96.029				233.9	301.5	389.8	489.5	542.9	1815	1498	0.8099	0.0039	0.0961	0.0854	0.0013	0.8775	0.0014	0.0579	0.061	0.0011			1.0			0.1204	0.471	0.72	0.37	1.0	172.8	45.12	48.5	63.4	11.4	12.52	6.56	389	67	0.11	234.3	31.0	0.298	0.79	0.022	0.0			0.0002					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. One of the poorer stations in the network but important for flood warning.	Velocity area station. One of the poorer stations in the network but important for flood warning.	Control is gravel bed; unstable - sensitive to rearrangement of bed material (even in modest flows). Frequent low flow gaugings are necessary to define rating and low flows should be treated with caution as a result. Can ice up in winter.		High rainfall, steep, upland catchment developed on Silurian shale; approx. 2/3s overlain by superficial deposits. One of the most forested UK catchments (>80%).	Natural flow regime.
21027	Blackadder Water at Mouth Bridge	159.0	NT8256553028	382565.0	653028.0	55°46'12.9766"N 2°16'46.0751"W	55.77027	-2.27947	Blackadder Water	Mouth Bridge	56.6	SEPA-SE	15022	21	1973-01-01		VA	21.0		15.5	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1973-11-01	2023-09-30	1.825	0.109	2022-08-09	2022-08-09	78.57	2002-10-22	2002-10-22	0.274	0.584	1.006	3.728	5.826	0.49	18231	18231	100.0	1974-01-01		39.249	58.0	99.3	206.5	274.9	446.0	805	774	0.1054	0.2818	0.4942	0.1075	0.0096	0.0973	0.3377	0.3607	0.1949	0.0088	0.6552	0.1569	0.1879		0.0271	0.0311	0.8246	0.41	0.518	0.997	56.7	36.77	33.1	45.7	8.6	37.22	20.16	195	139	0.29	58.0	155.34	0.572	0.962	0.0699	0.0027			0.0039					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the Blackadder Water.	Velocity area station. Natural river section, about 13m wide, with rock control.	Moderate seasonal weed growth effects rating. Peak flow ratings derived from current meter gaugings up to 2.4m (about 2 QMED), simple extrapolation beyond.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Natural catchment. Mostly Old Red Sandstone and calciferous sandstone overlain by Boulder Clay. Grazing on hills, arable on lower land; some forest. No significant catchment changes known.	Natural flow regime.
21028	Menzion Burn at Menzion Farm	5.7	NT092234	309200.0	623400.0	55°29'45.3150"N 3°26'19.6642"W	55.49592	-3.4388	Menzion Burn	Menzion Farm	267.0	LRWD		21	1948-01-07	1952-12-31	TP				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1948-01-07	1952-12-31	0.207	0.018	1949-07-11	1949-07-11	2.455	1949-01-07	1949-01-07	0.031	0.076	0.13	0.439	0.651	0.43	1821	1819	99.89				259.0	313.3	411.5	558.1	685.0	1437	1459	0.7544		0.1271	0.1185		0.866	0.0015	0.0511	0.0814				1.0		0.0281		0.2383	0.72	0.392	1.0	257.5	45.81	47.1	63.4	10.5	6.93	3.99	423	310	0.29	259.0	6.7	0.235	0.553	0.0173	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station in a small catchment near the source of the River Tweed.	Thin-plate weir.		Natural record encompassing very under-represented period (1948-1952).	Upland catchment with impermeable bedrock. One of the UK most forested catchment (~75%).
21029	Tweed at Glenbreck	34.0	NT063215	306300.0	621500.0	55°28'41.9029"N 3°29'02.5432"W	55.47831	-3.48404	Tweed	Glenbreck	290.0	SEPA-SE		21	1964-01-01	1975-10-01	VA	110.0			false	true	false	true	false	false	false	false	false	false	false	false	false	N																			1964-02-04	1975-09-01	37.765	283.1	346.9	417.9	502.3	633.5	1703	1532	0.4742		0.3431	0.1828		0.5142	0.002	0.2931	0.1868	0.0039			1.0		0.0507	0.087	0.2671	0.72	0.353	1.0	165.1	49.11	43.7	61.2	10.8	12.46	6.4	420	10	0.08	283.1	34.4	0.316	0.797	0.0212	0.0			0.0			1963..1974		cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the River Tweed in the Scottish Borders.	The station was originally operated by Lothian Regional Council (Department of Water and Drainage) who produced the early record from January 1964 to October 1977. SEPA took ownership and reopened the station on 10/10/2008. The station contributes to SEPAs flood warning service and has good potential for feeding into flow modelling and Peak Flow estimation methods. SEPAs calibration at the station is ongoing and it is hoped that flow records from 2008 can be supplied to the NRFA in the near future.	The control is a simple flat concrete broad crest bar with stone pitching on the flanks. Gravel had built up on the u/s side. Floods are believed to be contained. According to the original notes held in the NRFA, the early record up to 1977 is derived from current meter gaugings at low flows, simple extrapolation beyond. SEPA do not hold any of the gaugings or calibration records from this early period and so from 2008 SEPA has calibrated the station from scratch.		Impermeable bedrock. Mainly hill grazing. No significant catchment changes known.	Natural regime.
21030	Megget Water at Henderland	56.2	NT2312323103	323123.0	623103.0	55°29'44.3176"N 3°13'06.2112"W	55.49564	-3.21839	Megget Water	Henderland	254.0	SEPA-SE	14982	21	1968-01-01	2010-05-06	VA	76.0		14.3	true	true	true	true	false	false	false	false	false	false	false	false	false	S	1968-11-15	2010-05-06	1.723	0.11	1977-07-09	1977-07-09	48.31	1977-10-30	1977-10-30	0.348	0.649	0.979	3.883	5.578	0.46	15148	15145	99.98	1968-11-13		77.673	255.5	354.4	506.1	678.0	838.0	1637	1669	0.0174		0.3757	0.5641		0.0205	0.0013	0.4675	0.471				1.0			0.3918	0.3351	0.72	0.393	1.0	226.7	47.73	48.6	65.5	11.1	13.58	6.52	511	109	0.2	255.5	56.08	0.213	0.698	0.0086	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Flows are highly artificial due to Megget Reservoir.	Velocity area station, about 23m wide, with rock and gravel bar acting as control.	Downstream of Megget Reservoir; station was installed to provide data for reservoir design - flows are highly artificial since impoundment began in 1982. Rating derived from current meter gaugings up to 1.9m (about 1.9 QMED) for the period pre-reservoir and up to 0.8m post-reservoir.	Monthly naturalised flows available. POT and AMAX data presented are for pre-reservoir only.	A steep upland catchment developed on impervious Silurian formations approx. 3/4 overlain by superficial deposits. Land use mostly hill grazing. Megget Reservoir (1982). FARL changed from 0.815 (post-reservoir) to 1 (pre-reservoir) to represent the peak-flow series used.	Natural regime until 1982. From 1982 flows are highly artificial with Megget Reservoir used for public water supplies and operated in conjunction with St Mary's Loch.
21031	Till at Etal	648.0	NT9250939562	392509.0	639562.0	55°38'58.3318"N 2°07'14.1388"W	55.64954	-2.12059	Till	Etal	25.3	EA-NE	021031	21	1956-01-01	1980-12-31	VA	76.0		11.4	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1956-10-01	1980-05-31	8.479	0.0	1974-11-06	1974-11-06	134.2	1965-11-20	1965-11-20	1.492	3.482	5.748	17.27	24.54	0.57	8644	8554	98.959	1955-12-07	1980-12-31	82.07	25.2	54.9	162.9	426.0	814.4	851	827	0.0887	0.283	0.508	0.1082	0.0103	0.0777	0.223	0.5077	0.1847	0.006		0.2018	0.5665	0.2344	0.1444	0.0445	0.3915	0.46	0.504	0.992	127.4	41.45	37.9	49.7	9.2	77.05	39.24	209	45	0.12	25.3	634.67	0.658	0.756	0.0672	0.0011			0.0021					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station downstream of Etal Mill. Closed in 1980. Replaced with downstream station 21035.	Open-channel velocity-area station 300yds d/s from Etal Mill, on a large, incised meander. Closed 1980, but level-only site opened u/s on the weir at NT9250939562 in July 1999. Heaton Mill (21806) opened just d/s in 2001 as full-range flow station.	Had cableway while open. Low flow control was a pipe d/s. Bypassing prevented by a low artificial bank running from hut to high ground at the side of the valley; some ponding near the gauge hut, beginning at 1.5m. One rating applied across peak flow period of record. Rated to 200 cumecs by current meter. Calibration reflects changes in channel cross-section at high stages.		Three main tributaries, Breamish, Wooler Water and Glen, rise on the Cheviot Massif but with differing channel length and flood travel time. A catchment with mixed geology (Cheviot andesites and granite, sandstone etc). No large groundwater sources. Upland vegetation of moorland and rough pasture and lowland arable and improved pasture. No known catchment changes over time.	Bell-shaped hydrograph. Small borehole abstractions from sandstone.
21032	Glen at Kirknewton	198.9	NT9184831028	391848.0	631028.0	55°34'22.2453"N 2°07'51.0286"W	55.57285	-2.13084	Glen	Kirknewton	54.3	EA-NE	021032	21	1966-01-01	2010-09-13	FVVA	145.0	18.0	32.0	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1963-08-16	2010-09-13	2.949	0.107	2006-07-28	2006-07-28	113.0	2008-09-06	2008-09-06	0.288	0.859	1.69	6.49	9.35	0.49	17196	13819	80.362	1961-01-01	2010-09-14	43.319	54.9	106.9	243.1	467.6	814.4	929	877	0.0668	0.2474	0.549	0.1189	0.013	0.067	0.0944	0.6422	0.1904	0.0049			0.9924	0.0163	0.0189	0.0434	0.2895	0.46	0.456	0.986	193.9	50.64	38.4	51.7	9.5	36.77	17.75	272	356	0.13	54.9	196.05	0.435	0.793	0.0394	0.0008			0.0013			1983..2009	2008-09-05..2010-09-13	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Informal flat-V weir and velocity-area station draining The Cheviot. Station closed September 2010.	Informal flat-V weir and velocity-area station beyond (1:2 and 1:5 slopes and about 1:100 cross-slope, insensitive). V is lop-sided as left wing wall was moved inwards after flood damage. The weir crest was eroded in the past. Station closed in September 2010 following repeated breaches of bank. Equipment removed in September 2010 and the weir was completely removed in September 2015.	Banks are double terraced, with first step at 1.6m, second at 2.6m. A flood bank on the right bank protects the floodplain, but at high flows there was significant bypassing of the cableway (starting at 1.6m), leading to considerable uncertainty, true peaks not recorded. Flood bank breached upstream in September 2008. The bank was repaired in November 2008 but breached again in July 2009. Partially repaired by plugging the gap with gravel, but again breached in September 2009. Station rated by current meter gauging up to bankfull (1.6m). Multiple peak flow ratings applied across period of record, the most recent was developed by consultants as part of the Kirknewton flood mapping study and is valid from September 2008 to the end of the record. Flood Studies Report grade A for structure, but C due to chart record.	Flat-top hydrographs before September 1966 due to silting of inlet pipe. Logger installed in 1991 (very limited data 1983-1990 but charts available). Caution needed in interpreting suspect 1994 minima. Flows from 1989 reprocessed in 2002: low flows increased, some peak flows decreased. Peak flows in WY1983/1984 and WY1996/1997 rejected due to missing data. WY2007/2008 peak flows rejected because September 2008 flood caused breach in flood banks, resulting in missing flows until late October 2008. Subsequent peak flow data rejected as three breaches in upstream floodbank between September 2008 and station closure in September 2010. Breach was repaired twice but some of the flow was bypassing the weir from July 2009 to the end of the record. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Upland catchment, draining from The Cheviot with a natural flow regime. Developed mostly on impermeable igneous formations, around a third of the catchment is overlain by superficial deposits. Around half the catchment is grassland, with mountain/heath in upper reaches and arable in lower lying areas.	Natural flow regime, very limited abstraction.
21034	Yarrow Water at Craig Douglas	116.0	NT2895024444	328950.0	624444.0	55°30'30.8658"N 3°07'35.4898"W	55.50857	-3.12652	Yarrow Water	Craig Douglas	239.0	SEPA-SE	14983	21	1975-01-01		FL	145.0	35.0		true	false	false	false	false	false	false	false	false	false	false	false	false	S	1968-11-13	2023-09-30	3.708	0.131	1976-08-28	1976-08-28	91.55	2009-11-19	2009-11-19	0.817	1.534	2.251	8.099	11.17	0.49	20045	20045	100.0				239.4	297.0	466.5	606.4	838.0	1593	1555	0.0682	0.0014	0.3462	0.5381		0.0923	0.0042	0.4804	0.3781				1.0			0.3534	0.2235	0.72	0.39	0.767	222.8	46.92	46.4	62.6	10.8	20.86	11.07	460	100	0.17	239.5	116.18	0.272	0.692	0.0162	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Large trapezoidal flume. Flows affected by Megget Reservoir and St Mary's Loch.	Large trapezoidal flume. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Regular cleaning of structure needed due to algal growth. All flows contained. Originally theoretical rating. Re-rated using a physical model by Edinburgh University (1972). Confirmed with low gaugings up to 0.5m (about 0.1Q MED).	Low flows in Aug 1976 due to temporary damming of St Mary's Loch outlet. Monthly naturalised flows available.	Silurian formations give impervious catchment supporting hill grazing and some forestry. Over half covered with superficial deposits. Megget Reservoir 1982.	Sensibly natural runoff until impounding for Megget Res. began in 1982. St Mary's Loch 2km u/s attenuates floods significantly.
21035	Till at Heaton Mill	655.74	NT900424	390000.0	642400.0	55°40'29.9666"N 2°09'38.0388"W	55.67499	-2.16057	Till	Heaton Mill		EA-NE	021038	21	2002		USVA				true	true	true	true	false	false	false	false	false	false	false	false	false		2002-04-25	2023-09-30	10.264	0.0	2006-08-15	2006-08-15	208.4	2016-01-06	2016-01-06	2.209	3.708	5.956	22.35	32.9	0.54	7829	7751	99.004	2001-12-01		124.02	14.6	53.9	156.8	422.4	814.4	845	822	0.0884	0.2981	0.4997	0.1052	0.0101	0.0778	0.2391	0.4999	0.1794	0.0059		0.211	0.5485	0.2431	0.1408	0.0431	0.3991	0.44	0.5	0.992	125.2	41.4	37.7	49.4	9.2	83.52	44.51	205	44	0.12	14.6	655.53	0.654	0.792	0.0671	0.0011			0.002			2001		gdf;gmf;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station opened as a replacement for 21031.	Five (crossed) path ultrasonic gauge in a trapezoidal channel, designed to measure full range of flows. River is deep and slow-flowing at Heaton Mill. Previously station number 21806.	Well performing crossed-path multi-path ultrasonic gauge. Pre 2009 peaks were not recorded accurately above 150 cumecs due to range cap in the gauge configuration. A peak flow rating derived from ultrasonic measurements and confirmed by check gaugings is available.	Ultrasonic gauge missed peak flows in Sep 2008, July 2009 and March 2010 due to limitation set in gauge configuration, these peaks are estimated from the rating. All missing data periods in daily flows are due to ultrasonic configuration issues. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Rising on the Cheviot granite. Mixed geology (Cheviot igneous rock, sandstone etc). No known catchment changes.	Considerable spray irrigation abstractions during the summer, but unlikely to affect high flows.
22001	Coquet at Morwick	569.8	NU2344304453	423443.0	604453.0	55°20'00.8648"N 1°37'55.2318"W	55.33357	-1.63201	Coquet	Morwick	5.2	EA-NE	022001	22	1963-11-01		FVVA	175.0	6.0	10.0	true	true	true	true	false	true	true	true	true	true	true	true	true	N	1963-10-31	2023-09-30	8.753	0.721	1970-06-20	1970-06-20	394.0	2008-09-06	2008-09-06	1.32	2.57	4.67	19.3	29.7	0.44	21885	21761	99.433	1963-01-01		159.041	5.2	79.3	192.8	420.0	774.5	884	850	0.1593	0.1781	0.5275	0.1251	0.0084	0.1349	0.1315	0.4832	0.2419	0.0072		0.5209	0.264	0.2165	0.0372	0.0701	0.4802	0.44	0.393	0.993	110.0	42.53	34.4	44.7	9.1	82.4	45.2	225	110	0.19	5.3	578.25	0.497	0.787	0.0403	0.0012			0.002					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal flat V weir.	Velocity area station, originally open channel with some control exerted from a ford 900m downstream, then a 34m wide concrete informal flat-V weir (approx. 1:20 cross-slope) was built in 1975/76. A temporary station was established 200yards d/s during weir construction, to maintain continuity of records. Inlet pipe and instrument building both replaced in 2006. The station replaced an earlier station at Guyzance, 3 miles u/s.	Fairly straight section with high banks, although may be some limited bypass at high flows. Non-modular at even moderate levels. Station has suffered from inlet pipe lag and previously had a gravel trap in inlet pipe. New inlet pipe installed in 2006, no gravel trap. Two peak flow ratings applied across period of record, the most recent is valid from 1976 and based upon an earlier version of rating C but with an additional upper limb informed by hydraulic modelling. Good fit to gaugings. Flood Studies Report grade A1.	Data missing 18/02/2006 - 14/06/2006 due to station rebuild. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). Possibly suspect flows 19/11/2019 - 2/03/2020. Data reprocessing from 04/01/1982 in 2022.	Predominantly upland catchment draining from Cheviots. Largely Carboniferous Limestone and low permeability Devonian Igneous series, two thirds of the catchment is overlain by superficial deposits. Half the catchment is grassland, some upland afforestation and arable in low-lying areas. Progressive afforestation and associated drainage on upland Cheviot tributary valleys.	Responsive natural regime. In the past annual flush and drain of dam u/s of gauge on Duke of Northumberland estate has affected the flow regime. Some abstractions.
22002	Coquet at Bygate	59.5	NT8694108343	386941.0	608343.0	55°22'08.0554"N 2°12'27.3082"W	55.3689	-2.20759	Coquet	Bygate	213.0	EA-NE	022002	22	1957-01-01	1980-12-31	MIS	47.0	47.0	6.0	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1957-10-01	1980-06-30	1.212	0.105	1959-09-09	1959-10-16	24.18	1979-03-02	1979-03-02	0.206	0.464	0.736	2.517	3.823	0.47	8309	8186	98.52	1948-01-01	1980-12-31	25.84	221.3	321.6	411.5	490.7	617.9	1071	1020	0.0431	0.0001	0.719	0.2378		0.0434	0.0008	0.5265	0.4292	0.0001			1.0121	0.0017		0.1946	0.0532	0.46	0.413	1.0	205.3	51.12	36.0	48.7	9.8	15.93	8.67	406	120	0.18	221.3	60.01	0.11	0.755	0.0077	0.0			0.0			1965		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A standing wave flume with broad-crested side weirs. Site closed in 1980 but was re-opened temporarily as a flood warning site between April 2000 and March 2005.	A standing wave flume with broad-crested side weirs separated from the flume by substantial divide walls, flared at the u/s ends; overall width 8.8m. Beneath a road bridge with soffit at 2.2m. River valley is narrow and steep-sided at this point, with rocky bed. Site closed in 1980, reopened in April 2000 as level-only flood warning site and closed again in March 2005. Closed from peak flows dataset in September 2022 (WINFAP Files v11).	A gravel accumulation problem (notably severe in 1977) was partly alleviated by installation of a gabion gravel trap u/s in 1952, cleaned biannually. However, accumulation continued, and the trap collapsed in 2000. Side weirs drown at high flows. No bypassing. Multiple peak flow ratings applied across period of record, the most recent is valid from April-1979 after gravel shoal developed until site closure. Flood Studies Report grade C due to uncertainty in rating.	Excessive gravel accumulation caused breaks in the early record but installation of a gravel trap in 1952 contributed to increased reliability; almost a continuous record 1957-1980 (when station decommissioned). Data from 1947-1966 from flow recorder with limit of 26.3 cumecs, therefore no floods recorded.	A very responsive catchment with small floodplains all the way up the catchment accommodating some over-bank storage. River flows in a steep Cheviot valley mantled by glacial material. Coquet river is a designated Site of Special Scientific Interest. No known catchment changes.	Hydrographs are sharp with multiple peaks. No known artificial influences.
22003	Usway Burn at Shillmoor	21.4	NT8866507716	388665.0	607716.0	55°21'47.9287"N 2°10'49.2960"W	55.36331	-2.18036	Usway Burn	Shillmoor	207.0	EA-NE	022003	22	1952-01-01		TP			22.0	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1957-10-01	2023-09-30	0.558	0.037	1959-09-04	1959-09-06	26.88	2008-09-06	2008-09-06	0.079	0.165	0.278	1.237	1.941	0.38	24106	16963	70.368	1951-05-01		19.533	199.8	323.4	450.3	551.5	774.5	1052	1056	0.3175	0.0013	0.2811	0.4		0.3727		0.2831	0.3433	0.0009			1.0009			0.521		0.45	0.302	1.0	205.2	56.92	40.5	54.5	9.8	16.27	9.32	444	191	0.23	199.8	21.88	0.084	0.933	0.0062	0.0002			0.0			1965..1998	1995-06-06..1999-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Thin-plate weir discontinued in 1980 but recommissioned as level-only station in 1995 for flood warning and reinstated as flow gauge in 1999.	Thin-plate weir with 6.2m wide centre crest and two flanking broad crests of differing widths (0.85m right bank, 2.2m left bank). Discontinued in 1980 and weir plates removed. Recommissioned as a level-only station in 1995 for flood warning using concrete broadcrested weir with notch. Weir plates reinstated in September 1999. Good d/s drop over the weir prevents drowning.	No bypassing. No cableway, gaugings only possible at low flows. Two peak flow ratings applied across period of record for pre-1995 and then post-1999 following reinstatement. Based on theoretical rating of thin plate weir with check current meter measurements at wading level. Rating updated in 2008 and applied back to 1999 when weir plates reinstated. Flood Studies Report grade D pre-1966, A1 post-1966.	Gaps in the record occur due to inaccessibility in winter and incomplete flow measurement at very high flows. Peak flows are rejected since the site re-opened and weir plates installed in 1999 as the top end of the rating is not yet reliable. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Small upland moorland catchment draining from The Cheviot. Rough grass and heather, peaty sub-soil and mainly igneous bed-rock. Substantial recent afforestation.	No known artificial influences.
22004	Aln at Hawkhill	205.0	NU211129	421100.0	612900.0	55°24'34.4852"N 1°40'05.9079"W	55.40958	-1.66831	Aln	Hawkhill	13.9	EA-NE	022004	22	1966-01-01	1980-12-31	VA	85.0		19.0	true	true	false	true	false	false	false	false	false	false	true	false	false	N	1966-09-01	1980-05-31	2.423	0.296	1976-07-09	1976-07-09	90.65	1967-11-05	1967-11-05	0.462	0.799	1.22	4.715	8.14	0.45	5022	4931	98.188	1960-01-01	1980-05-31	63.23	16.6	65.0	125.0	224.3	342.5	753	758	0.1677	0.1961	0.5445	0.0791	0.0125	0.1543	0.1597	0.5165	0.1524	0.0169		0.5627	0.0277	0.4096	0.0695	0.0249	0.6071	0.45	0.427	0.997	80.0	35.72	35.8	44.3	9.0	34.61	19.6	134	103	0.15	16.8	202.91	0.366	0.864	0.0406	0.0046			0.0056	0.811	0.325	1959		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway with a gabion basket weir added as a low flow control. Site closed 1980.	Velocity area station with cableway, then informal gabion basket weir (low flow control) after 1972; high flow control was possibly at d/s bridge. Unstable gravel section, and weeds problematic in summer. Station closed in 1980.	No bypassing at high flows. Chart limit sometimes caused peak truncation. Multiple peak flow ratings applied across period of record, the most recent is valid from April 1972. Changes to informal gabion control affected low flows only, top rating limb remains constant throughout record. Flood Studies Report grade B.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A predominantly lowland catchment, mixed permeability geology. Underlain with Devonian igneous rocks on the western margin of the catchment, Cementstone and Fell sandstone in the middle of the catchment and Middle Limestone series in lower reaches. Extensive cover of Boulder Clay. Rural pasture with some arable and woodland. No known catchment changes.	In spite of the predominantly lowland catchment produces sharp hydrographs. Some abstractions.
22006	Blyth at Hartford Bridge	269.4	NZ2429380003	424293.0	580003.0	55°06'49.8024"N 1°37'14.5364"W	55.11383	-1.6207	Blyth	Hartford Bridge	24.6	EA-NE	022006	22	1966-01-01		FVVA	190.0	36.0	36.0	true	true	true	true	false	false	false	true	false	false	true	false	false	PE	1966-10-01	2023-09-30	2.136	0.051	1976-08-23	1976-08-23	138.0	2008-09-06	2008-09-06	0.135	0.351	0.798	5.07	8.28	0.36	20819	20696	99.409	1960-01-01		52.773	24.0	57.8	110.5	185.4	265.2	725	696	0.0699	0.4741	0.4185	0.0064	0.0278	0.0645	0.4427	0.4428	0.0145	0.0343		0.7238		0.2762	0.058	0.0142	0.8222	0.42	0.333	0.99	31.9	38.61	33.2	42.8	9.4	44.77	23.1	115	94	0.25	24.0	273.67	0.838	0.936	0.1148	0.01	0.738	0.889	0.0095	0.802	0.842			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with flat V weir. Weir modified to prevent sedimentation in 1978.	Velocity area station, with flat V weir (24.3m wide) for low flow control installed in 1968. Distance between wing walls was reduced to 20.0m in November 1978 to prevent sedimentation, and walls raised from 1.0m to 1.5m. Located on a straight section with stony bed, just u/s of a rock rapid. Two downstream pre-barrages constructed in 2014 to improve fish passage over the structure, eel tiles added at the same time.	Three ratings applied across period of record, the most recent is valid from November 1978 when weir modifications necessitated a rating change. Flood Studies Report grade A1. No change required following fish passage improvements.	No bypassing except in flood events of December 1978 and March 1979, although over-topped at high flows. Flows 19/09/2014-06/10/2014 affected by fish pass installation. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Mostly low-lying, moderate-permeability catchment (Millstone Grit and Coal Measures), with around four fifths of the catchment covered by boulder clay. Mixed arable and grassland. No known catchment changes.	Small net export of water as the majority of runoff from headwaters of River Pont (approx 25.8 sqkm) is diverted to Whittle Dene reservoirs.
22007	Wansbeck at Mitford	287.3	NZ1745885790	417458.0	585790.0	55°09'58.0365"N 1°43'38.9976"W	55.16612	-1.7275	Wansbeck	Mitford	31.4	EA-NE	022007	22	1968-01-01		MIS		35.0	7.0	true	true	true	true	false	false	false	true	false	false	true	false	false	S	1968-11-01	2023-09-30	3.283	0.1	1976-08-20	1976-08-20	225.0	2008-09-06	2008-09-06	0.238	0.614	1.3	7.39	11.8	0.37	20057	20052	99.975	1966-11-01		101.234	30.8	93.9	176.1	283.1	442.2	847	794	0.1907	0.2159	0.5255	0.0592	0.0052	0.1991	0.1855	0.5232	0.0854	0.0029		0.9847		0.0153	0.0451	0.028	0.7833	0.45	0.347	0.973	50.8	41.66	34.0	44.6	9.5	39.01	20.15	182	112	0.26	30.8	282.01	0.547	0.919	0.0591	0.0005			0.0003					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with flat V weir and flume. Record combines data for 22005 and 22007.	Velocity area station. Flat V weir and central flume for low flow measurement (3m wide, overall width 18m) installed 1974, replacing older broad-crested weir also with central flume (located above Tynemouth Corporation intake). Cableway. Just below the station, the channel is confined in deep, steep-sided valley at bend in river. The data series for this station (22007) combines records from Highford (22005) from February 1963, replaced by Mitford from November 1966. In the early period, medium and high flows were measured 0.5 miles d/s at Highford Dam. This had an autographic recorder from February 1963-September 1968, replaced by a punched tape recorder until October 1975. The station was never properly calibrated by gauging, but flows were derived by correlation with Mitford.	Cableway allows for high flow gauging, but wading behind the hut is also necessary at highest levels. Multiple peak flow ratings applied across period of record, the most recent is valid from December 1975 post weir modifications. Ratings in good agreement with respective gaugings. Recalibration of peak flow rating produced substantial reduction in flood flows. Flood Studies Rating grade A1.	Data 17/09/2014-07/10/2014 affected by fish pass installation and eel pass repairs. No AMAX rejected as a result of flood storage dam, but some impact on Jan 2016 event, see event comment. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A mainly lowland catchment located on moderately permeable Millstone Grit and Upper, Middle and Lower Limestones with extensive boulder clay cover. Around half the catchment is grassland, mixed arable and woodland. No known catchment changes.	Font Reservoir impounds 30.3 sq.km of upper catchment on River Font tributary and affects flood flows through drawdown and attenuation. Modest net effect of export from headwater reservoir. Completion of Mitford flood storage dam in April 2015, impounding ~60% of the upstream catchment. This reduces downstream flow in large events, beginning to impact at around 1:25 year return period, with increasingly significant impact on more extreme events. Outflow from the dam is constrained at 150m3/s. The catchment produces sharp hydrographs, but shows a bigger lag than is typical for the area. Northumbrian Water's PWS abstraction at Mitford (just d/s of gauging station) closed by the mid-1990s.
22008	Alwin at Clennell	27.7	NT925063	392500.0	606300.0	55°21'02.3916"N 2°07'11.3671"W	55.35066	-2.11982	Alwin	Clennell	156.4	EA-NE		22	1969-01-01	1983-04-06	FV			22.5	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1969-10-01	1983-04-06	0.573	0.0	1978-05-19	1978-05-28	30.63	1979-03-02	1979-03-02	0.078	0.188	0.323	1.262	1.89	0.49	4936	4936	100.0				158.3	267.1	395.0	519.4	614.9	999	1003	0.5679	0.0024	0.2978	0.1274	0.0006	0.5615	0.0033	0.281	0.1504	0.0037			0.9863	0.0137		0.2242	0.065	0.45	0.382	1.0	244.6	55.04	35.6	46.1	9.3	11.28	6.82	392	176	0.27	158.3	27.3	0.125	0.404	0.0101	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir in a small upland catchment. Flow measurement discontinued in 1983.	Flat-V weir. Station discontinued in April 1983.	Dubious high flow calibration.		Small upland catchment in S Cheviots. Significant afforestation - mixture of mature and young plantations.	Natural regime.
22009	Coquet at Rothbury	346.0	NU0670601600	406706.0	601600.0	55°18'30.4076"N 1°53'45.2587"W	55.30845	-1.89591	Coquet	Rothbury	70.7	EA-NE	022009	22	1972-01-01		VA	223.0		10.6	true	true	true	true	false	false	false	true	true	true	false	false	true	N	1972-06-01	2023-09-30	5.849	0.439	1990-08-04	1990-08-04	284.0	2008-09-06	2008-09-06	0.875	1.868	3.382	12.2	17.7	0.47	18749	18747	99.989	1972-04-01		135.648	70.3	132.5	277.0	452.4	774.5	951	905	0.1651	0.1033	0.5593	0.1641	0.0065	0.1317	0.0688	0.4582	0.3356	0.0047		0.2513	0.4413	0.3099	0.0085	0.1158	0.3046	0.45	0.395	0.994	140.7	45.5	34.3	44.7	9.1	49.15	26.29	284	120	0.16	70.4	345.98	0.464	0.619	0.0359	0.0014			0.0018			1972..1978		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal mill weir d/s providing good control at most flows.	Velocity area station with cableway; informal mill weir below station provides good control which should hold for most flows. The timber weir crest was replaced with concrete during modification for calibration in 1972. Well-confined section between steep banks, with a straight approach.	One peak flow rating applied across period of record. Good fit to gaugings, gauged close to AMAX2.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Natural, upland catchment draining the Cheviot hills and the Northumbrian fells. Low permeability (Igneous, Cementstone and Fell Sandstone) geology. Almost half of the catchment overlain by superficial deposits, including peat in uplands and Boulder Clay and alluvium in the lower valley. Land use is mainly upland pasture with grazing for cattle and sheep, with isolated areas of upland heath and woodland and arable in lowlands. Significant areas of overbank storage on floodplain that attenuate hydrographs. No known catchment changes.	Some small groundwater abstractions (Tosson and Cartington springs) but sensibly natural.
23001	Tyne at Bywell	2175.6	NZ0385861700	403858.0	561700.0	54°56'59.7723"N 1°56'28.6676"W	54.94994	-1.9413	Tyne	Bywell	14.0	EA-NE	023001	23	1956-01-01		VA	1471.0		6.0	true	true	true	true	false	true	false	true	false	true	true	true	true	S	1956-10-01	2023-09-30	45.117	2.48	1976-09-07	1976-09-07	1450.0	2015-12-05	2015-12-05	6.102	15.0	25.7	103.0	152.0	0.39	24471	24275	99.199	1956-08-01		837.962	15.0	140.6	264.5	469.5	891.9	1082	1016	0.2078	0.0569	0.5376	0.1761	0.0102	0.2137	0.0374	0.425	0.3064	0.0082	0.0047	0.9469	0.0056	0.0427	0.018	0.1934	0.4935	0.51	0.318	0.961	93.7	48.19	35.6	47.7	9.9	94.29	55.02	286	83	0.09	15.0	2172.36	0.719	0.839	0.0504	0.002			0.0026			1955		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Principal gauging station on the Tyne - a velocity area station. Flow regime influenced by releases from Kielder.	Principal gauging station on the Tyne. Velocity area station with cableway on a wide reach. Blockage/damage to stilling pipe caused problems in early 1990s. Removal of gravel from d/s river bed between 1961 and 1963 affected water levels, leading to replacement of stilling well at lower level; high flows relatively unaffected.	Before 1961 and after 1964 station considered good for high flow measurement. Ratings have changed over the record owing to alterations in control and bed levels resulting from gravel extraction. Three peak flow ratings for the period of record. Ratings fit well to corresponding gaugings. Flood Studies Report grade A1 before and after 1962-65, B during.	As a result of re-rating after gravel extraction the October 1967 flood is now thought to have been lower than the January 2005 peak of 1370 cumecs. Rating C applied in September 2013 resulted in reduced flows (from 1992 onwards), especially at low levels. Rating D applied following December 2015 event, same as previous rating but modifies and extends the top limb above 1130 cumecs. Gauged to very high level, including floodplain flow estimate, in December 2015 event and confirmed by hydraulic model. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	A large, impervious catchment (largely Carboniferous Limestone) with extensive superficial deposits (peat, boulder clay, alluvium) draining from north Pennines. Includes Kielder Reservoir which controls 241 sq.km of the catchment (impounded 1982). Around half of the catchment is grassland, with extensive moorland arable farming confined to the lower valley. There has been significant afforestation in the catchment since 1926.	Some export of water, and regime influenced by pulsed hydropower releases from Kielder, but limited impact on annual runoff. In drought years, Kielder releases maintenance low flows (4.2 cumecs min.) and support transfers to the Derwent, Wear and Tees which are abstracted at Riding Mill 500m u/s.
23002	Derwent at Eddys Bridge	118.0	NZ0410750791	404107.0	550791.0	54°51'06.8519"N 1°56'15.2167"W	54.8519	-1.93756	Derwent	Eddys Bridge	181.0	EA-NE	023002	23	1954-01-01		FLB		126.0	7.3	true	true	true	true	false	false	false	true	false	false	false	false	false	S	1954-10-01	2023-09-30	0.957	0.083	1989-10-15	1989-10-15	107.0	2008-09-06	2008-09-06	0.323	0.421	0.466	1.837	3.313	0.56	25202	25155	99.814	1954-10-01	1965-10-01	48.41	182.1	241.5	359.4	492.5	563.2	960	943	0.1063	0.0118	0.427	0.4175	0.0016	0.0616	0.0242	0.3331	0.5487	0.0039		0.9003		0.0997		0.1958	0.1062	0.59	0.316	0.996	96.9	48.18	41.2	52.1	10.4	23.06	11.34	363	49	0.28	182.2	118.11	0.234	0.863	0.0203	0.0003			0.0007			1965..2022	1965-10-01..2023-10-01	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested weir with central low flow flume. Heavily influenced by Derwent reservoir.	Broad-crested weir with central low flow flume; total width 15m, central flume 1.8m, no dividing walls. Low flow crest at 180.935 mAOD, broad crests are 0.75m higher. Model calibration. From 1965 flows controlled by Derwent Reservoir 2km upstream, stark contrast with previous natural regime. A good control, situated in a well-defined, straight channel; flat agricultural land on one side, steep wooded slope on the other.	All flows contained within structure. Only gauged at lower flows below 10 cumecs. Original peak flow rating by flume formula, refined with physical model test and applied throughout record. Flood Studies Report grade A1.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	An upland moorland catchment used for rough grazing. Construction of Derwent reservoir early 1960s. Geology is a mixture of Carboniferous Limestone and Millstone Grit partially overlain by Boulder Clay in lower valley and peat in headwaters.	Data is heavily influenced by Derwent reservoir (impounded 1965) and therefore peak flows are marked as rejected. Substantial net export of water. Burnhope Burn enters the Derwent downstream of the reservoir; flows from this are partly diverted to reservoir.
23003	North Tyne at Reaverhill	1007.5	NY9055573231	390555.0	573231.0	55°03'12.5214"N 2°08'57.7623"W	55.05348	-2.14938	North Tyne	Reaverhill	64.9	EA-NE	023003	23	1959-01-01		VA	560.0		7.2	true	true	true	true	false	false	false	true	false	false	false	false	false	S	1959-10-01	2023-09-30	22.3	0.956	1976-08-25	1976-08-25	591.0	2015-12-05	2015-12-05	2.973	7.474	13.85	49.56	71.27	0.4	23376	23263	99.517	1959-01-01		437.4	66.0	165.0	269.3	413.4	602.7	1091	1023	0.3311	0.0326	0.4315	0.1839	0.0074	0.3484	0.0125	0.3276	0.2952	0.0027	0.0102	0.8926	0.012	0.085	0.0045	0.1861	0.5591	0.5	0.31	0.991	92.3	50.69	34.7	46.3	9.8	66.25	37.97	278	125	0.14	66.0	1012.98	0.666	0.764	0.0471	0.0005			0.0005			1980..2022	1980-10-01..2023-10-01	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, replaced 23015. Flow regime influenced by Kielder reservoir.	Velocity area station (63m wide at bank full) with natural channel control on a straight, stable reach with a stony bed. Replaced earlier station at Barrasford (23015) which was unreliable.	Velocity area station with natural channel control, some out of bank flow in very big events but no by-passing. Subject to regulation from Kielder reservoir since 1980. Ratings fitted to current meter gaugings at on site cableway, gauged to within 30% of AMAX1, some spread in gaugings but generally good fit and extrapolation is reasonable. Flood Studies Report grade A1. Three ratings applied over period of record.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	A very responsive upland catchment. Developed mainly on formations of the Carboniferous series (Fell Sandstone, Scremerston Group and Lower Limestone), around half of the catchment is overlain by Boulder Clay and peat in the headwaters. A predominantly natural regime until construction of Kielder reservoir (impounded 1982) which controls 24% of top of North Tyne catchment. Land use is rugged moorland and upland pasture, with significant afforestation in the west of the catchment since 1926. Pre-reservoir FARL is 0.991 and should be used with the pre-reservoir part of the records. Post-reservoir FARL is 0.936.	Kielder Reservoir impounds approximately 24 per cent of the catchment to Reaverhill, flow regime is impacted by regulation releases to support downstream abstractions in dry weather and by regular releases of between 3 and 16 cumecs for hydropower generation. Hydropower releases have little influence on high flows, however reservoir does have a significant impact on flood flows due to drawdown and attenuation. Catcleugh Reservoir also in the catchment, impounds 40 km2 in the headwaters of the Rede catchment with some net export of water from here to support Colt Crag and Hallington reservoirs.
23004	South Tyne at Haydon Bridge	751.1	NY8565664671	385656.0	564671.0	54°58'35.1807"N 2°13'32.2658"W	54.97644	-2.22563	South Tyne	Haydon Bridge	59.0	EA-NE	023004	23	1962-01-01		VA		3.0	11.0	true	true	true	true	false	true	true	true	true	true	true	true	true	N	1962-10-01	2023-09-30	19.688	0.92	1969-09-09	1969-09-09	693.0	2015-12-05	2015-12-05	2.14	5.51	9.93	47.0	70.0	0.33	22280	22280	100.0	1959-07-01		450.206	53.3	184.6	331.7	550.0	891.9	1235	1147	0.0763	0.0207	0.6724	0.2152	0.0084	0.0778	0.0062	0.4852	0.4217	0.0064		1.0			0.0209	0.3001	0.3339	0.6	0.298	0.989	107.1	49.22	38.3	52.4	10.3	60.11	32.2	350	23	0.14	53.5	749.89	0.608	0.817	0.044	0.0013			0.0023					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal flat V weir draining the Northern Pennines.	Velocity area station, with informal flat V weir as low flow control installed in 1972 - earlier low flows of limited accuracy. Section has coarse gravel, shingle and small boulder bed. Has cableway. Instrument hut washed away 2001 due to blockage of adjacent beck; rebuilt on same site in 2002.	Some overtopping onto both banks at very high flows, but no bypassing. Current meter gaugings to QMED. Two peak flow ratings applied to period of record, the most recent is valid from January 2002 when the weir was rebuilt - affected low flows only. Flood Studies Report graded A1.	Low flows prior to low flow control installation in 1972 of limited accuracy. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Upland catchment draining Northern Pennines. Geology: predominantly Carboniferous (limestones and Millstone Grit) with around two thirds of the catchment overlain by superficial deposits (upland peat and Boulder Clay). Predominantly grassland and some upland heath. No known catchment changes.	Responsive natural regime. No known artificial influences.
23005	North Tyne at Tarset	284.9	NY7764786133	377647.0	586133.0	55°10'08.3901"N 2°21'08.8012"W	55.169	-2.35244	North Tyne	Tarset	117.0	EA-NE	023005	23	1963-01-01	1987-07-07	FVVA			14.9	true	true	true	true	false	false	false	false	false	false	false	false	false	S	1963-10-01	1987-07-08	8.034	0.512	1976-08-26	1976-08-27	247.0	1968-03-23	1968-03-23	0.92	2.26	3.937	19.0	28.3	0.33	8682	8667	99.827	1960-09-01	1987-07-09	221.0	116.3	195.4	320.3	461.5	602.7	1319	1230	0.5212	0.0209	0.1438	0.2703	0.0073	0.5869	0.0037	0.0792	0.2887	0.0025	0.0317	0.834		0.1332	0.0033	0.3683	0.418	0.62	0.274	1.0	108.9	54.54	39.0	51.2	10.5	36.36	21.38	325	115	0.13	116.4	283.38	0.349	0.836	0.025	0.0			0.0004			1979..1986	1981-01-01..1987-07-09	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Closed in 1987 and replaced by 23022.	Velocity area station with informal flat V low flow control and cableway in straight, stable reach 35m wide. Superceded by Ugly Dub (23022) in 1983 (daily flows only) and station closed 1987, although chart maintained until December 1993.	Velocity area station with informal flat V low flow control (1:2 upstream and downstream slopes, 1:50 cross-slopes) installed in 1973. Left bank occasionally overtopped, right bank is higher. Kielder Reservoir built upstream, major influence on flows from 1981 with regulation for hydropower and downstream river support and attenuation of flood flows. Three ratings applied over period of record, established by current meter gauging and applied to periods before, during and after construction of weir. Gauged beyond QMED and within 20% of AMAX3. Flood Studies Report grade A1.	Data since impoundment of Kielder Reservoir has been excluded from the Peak Flow dataset. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10) and in September 2023 (WINFAP Files v12).	Upland catchment developed mainly on Carboniferous Limestone, Scremerston and Fell Sandstone (thick Boulder Clay in the valleys). Moorland headwaters, significant afforestation below since 1926. Land use is two thirds forest, the rest scrub, moorland and rough grazing. Pre-reservoir FARL is 1.0 and should be used with the pre-reservoir part of the records. Post-reservoir FARL is 0.815.	Natural flow regime until the construction of Kielder Reservoir (impounded 1982) which controls 80% of the catchment; very artificial regime from 1981. Hydrographs are well peaked.
23006	South Tyne at Featherstone	321.9	NY6721661064	367216.0	561064.0	54°56'35.3435"N 2°30'47.8663"W	54.94315	-2.5133	South Tyne	Featherstone	131.7	EA-NE	023006	23	1966-01-01		CC		500.0	12.1	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1966-10-01	2023-09-30	10.708	0.623	2003-09-17	2003-09-17	280.0	2015-12-05	2015-12-05	1.268	3.127	5.29	26.25	38.8	0.32	20819	20699	99.424	1966-10-01		243.67	129.3	232.9	438.8	597.0	891.9	1465	1331	0.0535	0.0078	0.6297	0.3021	0.0034	0.0444	0.0026	0.3782	0.571	0.0024		1.0			0.0106	0.4492	0.2072	0.64	0.27	0.995	123.5	52.86	41.4	56.8	10.7	35.88	20.0	429	12	0.19	129.4	323.05	0.46	0.77	0.0303	0.0008			0.0015					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir with high wingwalls, remains modular and all flows contained.	Compound Crump weir in 45m wide channel, built 1966.	Compound Crump profile weir (1:2 and 1:5 slopes) with low crest 15.2m wide and high crest 0.3m higher and 29.5m wide. High wingwalls and divide pier contain all flows, weir is u/s of natural rock outcrop and thought to remain modular throughout range. D/s pool level raised to improve fish passage in May 1971, weir is prone to gravel accumulation, removed intermittently. Theoretical rating applied to daily and peak flow period of record, temporary cableway in early 1970s allowed high flow check gaugings close to QMED. Cast iron crest units have deteriorated over time.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Linear, north trending catchment in northern Pennines. Geology: mainly Carboniferous Limestone, around two thirds of the catchment is overlain by superficial deposits of peat and Boulder Clay. Land use is predominantly grassland and upland heath. No known catchment changes.	Generally natural flow regime but operation of hydropower scheme at Nenthead can affect hydrograph at low levels.
23007	Derwent at Rowlands Gill	242.1	NZ1681558094	416815.0	558094.0	54°55'02.1618"N 1°44'21.1654"W	54.91727	-1.73921	Derwent	Rowlands Gill	26.2	EA-NE	023007	23	1962-11-01		CC			11.0	true	true	true	true	false	false	false	true	false	false	true	false	false	P	1962-11-01	2023-09-30	2.575	0.284	1972-04-18	1972-04-18	122.0	2008-09-06	2008-09-06	0.841	1.147	1.545	4.927	7.49	0.59	22249	22131	99.47	1963-01-01		43.491	29.4	129.5	264.9	450.4	563.2	869	849	0.1508	0.1042	0.4195	0.2586	0.0437	0.1286	0.1097	0.3837	0.3239	0.0385		0.5568		0.4432		0.1106	0.338	0.59	0.335	0.908	92.0	43.82	39.1	49.9	10.1	49.66	26.32	281	50	0.23	29.4	243.99	0.331	0.841	0.0265	0.0177	0.613	0.479	0.0224	0.803	0.497	1962..1963	1963-01-01..1964-10-01	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Two Crump weirs beneath a bridge. Regime heavily influenced by Derwent reservoir which impounds 110km2 of the upper catchment.	Two Crump profile weirs with slightly different crest levels beneath the two arches of a bridge and separated by the central pier of the bridge. Bypassing is prevented by the bridge and its embankments. Bridge inverts repaired in summer 2003. Persistent gravel accretion problem.	Persistent blockage of the long inlet pipe in the 1980s, also lag problem. One peak flow rating applied to period of record. Calibrated by physical model but lack of cableway meant rating not checked above moderate flows. Recent higher gaugings (>0.66m, 2019-2020) taken from bridge upstream suggest that current rating may be overestimating flows. Flood Studies Report grade C.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Predominantly upland catchment on moderately permeable carboniferous formations (Carboniferous Limestone in the upper catchment and Millstone Grit and Coal Measures elsewhere), with around half of the catchment overlain by superficial deposits of peat and Boulder Clay. Derwent Reservoir began impounding in 1965, two years into record. Mixed land use - under a half is grassland, with heath uplands; arable and urban development in lower reaches.	Flow regime is substantially influenced by Derwent Reservoir, which began impounding in 1965. Flashy response to rainfall prior to reservoir construction. Significant net export of water.
23008	Rede at Rede Bridge	343.8	NY8683783213	386837.0	583213.0	55°08'35.1257"N 2°12'28.9512"W	55.14309	-2.20804	Rede	Rede Bridge	107.1	EA-NE	023008	23	1968-01-01		FVVA		27.0	12.0	true	true	true	true	false	false	false	true	false	false	false	false	false	S	1968-10-01	2023-09-30	6.02	0.38	1976-08-26	1976-08-26	218.0	2015-12-05	2015-12-05	0.625	1.32	2.53	14.7	22.8	0.32	20088	19921	99.169	1968-10-01		130.4	105.6	179.3	275.1	417.5	578.0	1024	941	0.1954	0.0144	0.5898	0.1891	0.0055	0.1908	0.0047	0.435	0.3643	0.0022	0.0038	0.821	0.0353	0.14	0.0057	0.1345	0.5038	0.47	0.322	0.978	94.3	49.36	32.7	44.0	9.4	48.82	25.88	284	129	0.11	105.6	345.2	0.529	0.818	0.0409	0.0006			0.0006			2012		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir in an upland catchment. Catcleugh Reservoir has an appreciable influence on the flow regime.	Flat-V weir constructed with pre-fabricated crest units (24.3m wide). Flood plain storage u/s of the station may affect magnitude of high flows. A bridge d/s may act as a control at high levels.	Lag on inlet pipe possibly affected high flow measurements, inlet pipe replaced August-September 2003. One rating based on current meter gaugings applied to period of record and was developed in April 2010.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Upland catchment on moderately permeable Carboniferous formations, mostly covered by Boulder Clay, alluvium and upland peat. The area is faulted and has a few dykes. Two thirds of the catchment is grassland with upland heath. Land use mainly forestry and grazing. Progressive afforestation during period of record.	Catcleugh reservoir (controls 40 km2 (11.6%) of the catchment) has an appreciable influence on flows, with a modest net export of water.
23009	South Tyne at Alston	118.5	NY7154346530	371543.0	546530.0	54°48'46.1306"N 2°26'39.5278"W	54.81281	-2.44431	South Tyne	Alston	264.0	EA-NE	023009	23	1969-01-01		VA		0.6	15.0	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1969-10-01	2023-09-30	4.596	0.063	1971-12-11	1971-12-11	123.0	2012-06-22	2012-06-22	0.385	1.02	1.94	11.9	17.9	0.24	19723	15136	76.743	1969-09-01		144.28	262.8	369.1	519.3	647.8	891.9	1708	1522	0.0258	0.0003	0.6362	0.3328	0.0025	0.0192	0.0004	0.3076	0.67	0.0024		1.0				0.5561	0.054	0.64	0.266	0.999	119.0	53.7	45.0	61.2	11.0	16.54	10.14	514	5	0.25	263.2	118.67	0.38	0.743	0.0252	0.0006			0.0013			1991		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal flat V weir in a Pennine catchment with a responsive, natural regime.	Velocity area station with informal flat V control, subject to periodic boulder damage and undergone several reconstructions. All flow contained. Maintained as chart only for period 1983-1992. Cableway removed in 1980.	Velocity area station, originally open channel section, an informal flat V control built April 1971 and rebuilt Autumn 1978 following boulder damage. Weir repaired again in 2001. Multi-path ultrasonic gauge installed 1999 to support rating development, ultrasonic can be unreliable at high flows and was deactivated in November 2021. Several ratings applied to daily flow data throughout 1970s, based on current meter gaugings. Two ratings applied to peak flows, latest is from November 1984. Significant extrapolation above highest check gauging but rating supported by ultrasonic data and appears stable.	Weir is prone to damage from boulders during high flows, leading to frequent repairs and changes of rating during 1970s and 80s. Period of unreliable data 1983-1992, chart maintained through this period but levels not digitised or processed for flow. Rating reviewed in 2019 and records reprocessed from 1992. Rating reviewed in 2022 and records reprocessed from 2018. Water year 1991/1992 peak flows rejected as partial water year missed AMAX due to missing data. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Steep Pennine moorland catchment developed on Middle and Upper Carboniferous Limestone and Millstone Grit. Land use is predominantly rough grazing. No known catchment changes.	Very responsive, natural regime. No known artificial influences.
23010	Tarset Burn at Greenhaugh	96.0	NY7892287885	378922.0	587885.0	55°11'05.2674"N 2°19'57.2195"W	55.1848	-2.33256	Tarset Burn	Greenhaugh	136.0	EA-NE	023010	23	1970-01-01	1980-12-31	VA	74.0		15.9	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1970-07-01	1980-06-30	1.75	0.097	1975-08-12	1975-08-12	32.71	1979-02-27	1979-02-27	0.141	0.368	0.713	4.22	6.724	0.27	3653	3653	100.0	1970-06-18	1980-06-30	63.975	136.9	209.4	298.5	400.5	506.0	1063	993	0.3118	0.0216	0.3989	0.2633	0.0038	0.3072	0.0025	0.2971	0.3922	0.0009		1.0				0.1591	0.5921	0.56	0.305	1.0	85.2	52.58	34.2	45.0	9.7	18.45	9.61	301	149	0.25	136.9	95.51	0.349	0.849	0.0291	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Station closed 1980.	Velocity area station in natural channel with control consisting mainly of boulders about 0.3m diameter, mobile in severe floods. Substantial change to control after flood in August 1975 affected calibration up to 1.5m; stability returned subsequently. Discontinued 1980.	Two ratings applied to peak flow period of record, the most recent is valid from September 1975 after change in control as a result of flooding. This affected low flows only, upper limbs of both ratings remain the same.	Substantial change to control after flood in August 1975. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	The geology is mainly sandstones and shale with thin limestone bands to the east, and a thin cover of Boulder Clay or peat. No known catchment changes.	No known artificial influences.
23011	Kielder Burn at Kielder	58.8	NY6444294681	364442.0	594681.0	55°14'42.1038"N 2°33'38.9195"W	55.24503	-2.56081	Kielder Burn	Kielder	214.0	EA-NE	023011	23	1970-01-01		FVVA	46.0	9.1	18.0	true	true	true	true	false	false	false	true	false	false	false	false	false	N	1970-07-01	2023-09-30	1.894	0.121	1970-07-05	1970-07-05	53.5	1984-11-03	1984-11-03	0.267	0.555	0.908	4.5	7.05	0.32	19450	19061	98.0	1970-06-18		65.405	214.6	280.2	421.0	519.0	602.5	1401	1199	0.3123	0.0048	0.0856	0.5973		0.3369	0.0004	0.0506	0.6103	0.0017	0.0478	0.6421		0.3131		0.5258	0.1487	0.59	0.273	1.0	136.6	55.03	38.3	50.9	10.6	13.22	7.77	408	189	0.16	214.6	58.59	0.284	0.673	0.02	0.0			0.0			1988		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir with a cableway. Catchment heavily afforested since 1926.	Flat-V weir 12m wide with low wing walls (0.61m high). Repair to weir in 1992 - weir walls thought to have been narrower prior to this. Cableway u/s (straight reach).	Two ratings applied to the period of record, before and after weir repair in 1993. Accounts for overtopping at high stages. Daily flow rating based on gaugings.	First rating applied over-estimated flows (to 1993). Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Upland catchment on mainly Carboniferous formations, cut by numerous faults and dykes; half of the upland catchment is overlain by peat, and Boulder Clay and alluvium in the valley. Land use: two thirds upland heath, one third woodland, incorporating Kielderhead Moor and Kielder forest. Land use is predominantly forestry, with rough grazing at higher levels. Afforestation since 1926.	No known artificial influences.
23012	East Allen at Wide Eals	88.0	NY8021058329	380210.0	558329.0	54°55'09.3413"N 2°18'36.9788"W	54.91926	-2.31027	East Allen	Wide Eals	148.6	EA-NE	023012	23	1971-01-01	1980-12-31	VA			13.1	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1971-06-01	1980-12-31	2.127	0.118	1976-07-18	1976-07-18	63.38	1979-03-02	1979-03-02	0.234	0.575	1.007	4.877	7.876	0.34	3502	3502	100.0				149.9	256.7	378.5	525.4	673.0	1152	1050	0.0528	0.0114	0.7379	0.1854	0.0047	0.0456	0.0014	0.507	0.4403	0.0049		1.0				0.1733	0.3018	0.59	0.298	0.997	106.0	47.58	40.2	53.6	10.3	23.04	12.1	386	17	0.23	150.6	88.25	0.372	0.847	0.0268	0.0017			0.0017					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with no known artificial influences. Station closed 1981.	Velocity area station with boulder and gravel control which is mobile at high flows. Prone to gravel accretion. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Rating revised in 1975, following changes to the natural control; reverted to original rating after further changes in 1976.		Uplands covered with peat, thick Boulder Clay in valleys. Mostly forested. Improved pasture at lower elevations. No known catchment changes.	No known artificial influences.
23013	West Allen at Hindley Wrae	75.1	NY7907858271	379078.0	558271.0	54°55'07.2979"N 2°19'40.5393"W	54.91869	-2.32793	West Allen	Hindley Wrae	155.1	EA-NE	023013	23	1971-01-01	1980-12-31	VA			22.4	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1971-06-01	1980-12-31	1.635	0.022	1980-05-30	1980-06-04	37.77	1979-03-02	1979-03-02	0.06	0.323	0.709	4.089	6.382	0.27	3502	3502	100.0	1971-05-11	1983-07-17	53.825	156.1	257.9	410.3	522.2	673.0	1259	1156	0.0581	0.0021	0.666	0.263	0.0025	0.0503	0.0013	0.4285	0.5183	0.0013		1.0				0.3729	0.3113	0.63	0.28	0.998	119.4	51.63	39.2	54.2	10.3	18.05	9.63	402	36	0.27	156.4	78.56	0.292	0.754	0.0224	0.0003			0.0004			1970		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway. Station closed 1983 though charts available to June 1988.	Velocity area station with cableway. Initially there was a boulder bed control with reasonable stability, but gradual removal of boulders exposed a friable shale bed which then suffered rapid degradation so the inlet pipe became exposed above the water surface - last five gaugings taken when water below inlet pipe. Closed in 1983.	Multiple peak flow ratings applied to period of record, the most recent is valid from February 1981. Periodic changes in the natural control have necessitated changes in ratings.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Upland catchment, comprising a series of shales, sandstones and limestones of Carboniferous age with some Millstone Grit. Boulder Clay cover in valley and extensive peat cover in headwaters. Land use is predominantly rough grazing. No known catchment changes.	No known artificial influences.
23014	North Tyne at Kielder temporary	27.0	NY631935	363100.0	593500.0	55°14'03.5459"N 2°34'54.3437"W	55.23432	-2.58176	North Tyne	Kielder temporary	187.0	EA-NE		23	1960-01-01	1974-10-31	VA			25.0	true	false	false	false	false	false	false	false	false	false	false	false	false		1960-10-01	1974-10-31	0.815	0.032	1973-10-07	1973-10-07	19.47	1968-03-23	1968-03-23	0.104	0.251	0.404	1.855	2.913	0.35	5144	5143	99.981				190.0	225.5	340.5	474.7	602.7	1395	1288	0.484	0.0303	0.199	0.281	0.0056	0.7077	0.0111	0.0725	0.2067	0.002	0.1785	0.5179		0.276		0.3056	0.3155	0.62	0.282	1.0	130.7	51.76	39.1	50.6	10.7	10.08	5.76	343	86	0.06	190.0	26.82	0.333	0.73	0.0295	0.0			0.0012					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Temporary velocity-area station upstream of Kielder Reservoir.	Temporary velocity area station upstream of Kielder Reservoir.
23015	North Tyne at Barrasford	1043.8	NY924721	392400.0	572100.0	55°02'36.0492"N 2°07'13.6850"W	55.04335	-2.12047	North Tyne	Barrasford	60.0	EA-NE	023015	23	1939-01-01	1959-12-31	FLVA	830.0	9.0		true	true	false	true	false	false	false	false	false	false	false	false	false	SP	1942-01-01	1959-09-30	17.234	1.303	1949-07-13	1949-07-13	430.2	1949-12-25	1949-12-25	2.095	4.474	7.731	40.49	64.0	0.3	6482	5721	88.26	1939-10-12	1959-12-31	404.72	58.5	159.7	265.8	410.3	602.7	1080	1013	0.3237	0.0358	0.4408	0.1778	0.0075	0.3404	0.0163	0.3397	0.2864	0.0031	0.0098	0.8963	0.0116	0.082	0.0044	0.1796	0.5691	0.5	0.311	0.989	90.9	50.44	34.6	46.1	9.8	69.16	39.76	275	129	0.14	58.5	1049.63	0.676	0.762	0.0489	0.0005			0.0006			1964..1970		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with flume at lower flows. Catcleugh, Colt Crag and Little Swinburne reservoirs influence flow regime. Station closed 1959.	Flume to measure flows between 3.2cumecs and 6.8cumecs, and velocity area station for flows above 6.8 cumecs, in channel approximately 55m wide. The station was originally intended for assessment of flows at the Barrasford abstraction and not for flood flows. Station closed in 1959, replaced by Reaverhill (23003) approximately 2 km upstream, however POT data extracted for Barrasford until 1971 (before Kielder reservoir impounded in 1982).	Standing wave flume at Barrasford pumping station, flows between 3.2 and 6.8 cumecs from continuous recorder, flows below 3.2 cumecs calculated from a daily 9 am gaugeboard reading. Flows above 6.8 cumecs measured at open channel section 820m downstream. Rating at Barrasford was only considered reliable (within 5%) up to 4000 cusecs (113 cumecs) and only gauged to 1800 cusecs (51 cumecs) with significant extrapolation beyond. Rating later improved by correlation of stage data between Barrasford and Reaverhill together with flow data from that station (FSR grade B), however considerable inconsistencies remain between peak flows listed for these two sites during the overlapping period. No rating shown on NRFA.	Very low flows below 3.2 cumecs only available from daily 9 am gaugeboard readings. Peak flow rating from current meter gaugings, originally extrapolated at high flows but later re-worked by correlation with Reaverhill (23003), however inconsistent peaks including missing peak 08/12/1964 (rank 2 event at Reaverhill), therefore peak flows rejected for this year. Abstraction at Barrasford pumping station taken between the flume and the rated section, station file notes abstracted volume added to flow measured at rated section when pumping (maximum 22.3 cusecs (0.63 cumecs)). Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	A very responsive upland catchment developed mainly on formations of Carboniferous series (Fell Sandstone, Scremerston Group and Lower Limestone) and is of moderate permeability. Land use is rugged moorland and upland pasture, with a very high proportion of forestry (over a third) for a catchment of this size. Pre-reservoir FARL is 0.989, post-reservoir FARL is 0.934. No known catchment changes.	In many winters flow was affected by freezing in the catchment, resulting in very low flows and considerable lag between precipitation and run-off. Catchment includes, Catcleugh (in headwaters), Colt Crag and Little Swinburne (both in south-east of catchment) reservoirs. Abstractions for Newcastle-upon-Tyne water supply do not pass the gauging station.
23016	Ouse Burn at Crag Hall	55.0	NZ2540967548	425409.0	567548.0	55°00'06.6943"N 1°36'15.5320"W	55.00186	-1.60431	Ouse Burn	Crag Hall	36.0	EA-NE	023016	23	1976-01-01		TP B		4.0	35.0	true	false	false	false	false	false	false	true	false	false	false	false	false	E	1990-01-01	2023-09-30	0.323	0.003	1990-08-10	1990-08-11	18.5	2008-09-06	2008-09-06	0.03	0.071	0.131	0.713	1.176	0.29	12326	12279	99.619				34.9	50.9	68.1	101.9	143.5	678	668	0.0572	0.3382	0.1634	0.012	0.4114	0.0566	0.2745	0.1887	0.0007	0.4776				1.0	0.1317		0.8564	0.33	0.312	0.961	22.2	39.7	32.8	43.0	9.4	15.12	6.85	72	72	0.13	34.9	53.62	1.647	0.783	0.2032	0.2077	0.826	0.814	0.2874	0.934	0.813			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular thin-plate weir on the Ouse Burn in a small low-lying catchment.	Rectangular thin-plate weir with broad-crested flanks, weir plate damaged in August 1990 and replaced in April 1991.	Theoretical rating. New rating applied to weir plate after damage in August 1990 (applied from 19/08/1990), a new rating was then applied from April 1991 (to present) after the weir plate was replaced.	Flow data are held by the EA for the period 1975-1989, these data are not held on the NRFA due to a large proportion of missing data. Missing data 12th August-17th September 1990 due to damage of the weir plate before new rating was developed.	Small low-lying catchment on carboniferous formations, almost entirely overlain with boulder clay. Mixed (predominantly arable) agriculture, just under half the catchment is urban area.
23017	Team at Team Valley	61.9	NZ2496458471	424964.0	558471.0	54°55'13.1374"N 1°36'43.4055"W	54.92032	-1.61206	Team	Team Valley	9.2	EA-NE	023017	23	1991-01-01		VA	31.0		10.0	true	true	true	true	false	false	false	false	false	false	false	false	false	E	1982-01-01	2023-09-30	0.972	0.165	1987-08-10	1987-08-10	16.3	2000-11-06	2000-11-06	0.434	0.601	0.717	1.74	2.55	0.7	15248	13856	90.871			12.2	12.1	32.4	124.5	219.2	310.6	702	685	0.0898	0.2656	0.3307	0.0277	0.2722	0.1033	0.3364	0.3686	0.0031	0.1874				1.0			0.7225	0.33	0.371	0.995	63.9	36.02	34.6	43.7	9.8	22.0	10.17	124	94	0.15	12.2	62.35	0.519	0.637	0.0664	0.0948	0.738	0.769	0.135	0.859	0.856	1985..1990	1986-06-01..1986-09-30	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with ultrasonics installed June 1999 to April 2005. Early POT and AMAX data recorded at Walter Wilson site in Team Valley Trading Estate.	Velocity area station in culverted section below road bridge, low flow control is the concrete invert of the culvert. Ultrasonics installed June 1999 and deactivated in April 2005. Peak flows only are provided for 1975 to 1988, recorded at Walter Wilson in Team Valley Trading Estate in straight, engineered section with clay banks and silty bed. Control was channel structures d/s of A692 bridge and pipe crossing. Construction of the 1990 Gateshead Garden Festival site lowered the bed level, exposing the inlet pipe, and the station was temporarily closed.	Low flow control exercised by pre-existing weir. Uncertainties in the peak level recorded in the June 2012 event led to a survey of the site to establish when overtopping into adjacent field occurs, as the highest peak levels are all very similar at around 1.3m. Ultrasonic installation providing full calibration in 1998 (deactivated April 2005). Two peak flow ratings applied across period of record at current site in April 2004, based upon ultrasonic data. Analysis of uncertainties in the ultrasonic rating calculation suggests the lower and upper bounds for QMAX are -10% and +8% at this site. Previous peak flow rating was theoretical supplemented by current meter gaugings.	Missing AMAX data for 1990 due to construction of Gateshead Garden Festival Site. Daily flows for period of record reprocessed in 2002. Dropouts throughout the period of record (for example, in April, July, Sept-Nov 2014, July 2015, Sept 2019, March & Sept 2020) thought to be caused by reductions in minewater pumping at Kibblesworth (1 mile upstream). Low confidence in flows between June and Sept 1986. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	A primarily rural catchment on the SW edge of Gateshead, on moderate permeability bedrock overlain with extensive boulder clay and some alluvium. Land use is mixed agriculture with extensive urbanised areas, industry and former coal mines in lower catchment. No known catchment changes.	Sewage effluent and pumped minewaters enter the watercourse approximately 2km upstream of the station and affect the very responsive regime.
23018	Ouse Burn at Woolsington	9.0	NZ1939869862	419398.0	569862.0	55°01'22.5201"N 1°41'53.2559"W	55.02292	-1.69813	Ouse Burn	Woolsington	63.4	EA-NE	023018	23	1991-01-01		FVUS		2.0	10.0	true	true	true	true	false	false	false	true	false	false	false	false	false	N	1983-10-19	2023-09-30	0.071	0.0	1986-08-03	2022-09-02	5.08	2008-09-06	2008-09-06	0.003	0.013	0.027	0.144	0.268	0.3	14592	13053	89.453	1973-01-01		3.288	64.9	73.2	88.1	116.6	143.5	695	670	0.0121	0.6746	0.1826	0.0065	0.108	0.0332	0.5686	0.2617		0.1344				1.0			0.9375	0.45	0.312	0.977	30.9	39.7	34.2	43.4	9.4	5.99	2.89	91	67	0.25	64.9	10.14	0.799	0.773	0.1307	0.0609	0.833	1.205	0.1	0.944	1.197	1974..1990	1974-10-01..1991-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Informal flat-V weir with ultrasonics between 2001 and 2007.	Informal flat-V weir (3m wide). Station moved after the building of the Metro underground line and supplemented in October 2001 by ultrasonic measuring equipment (removed 2007).	Structure drowns at moderate flows and wing walls overtopped 2-5 times per year. Ultrasonic installed in 2001 to calibrate peak flows (removed 2007). Ultrasonic equipment produces good record with no drop-outs. Analysis of uncertainties in the ultrasonic rating calculation suggests the lower and upper bounds for QMAX are -17% and +44% at this site. Three peak flow ratings applied across period of record. Rating pre-1991 (before Metro line built) established from current metering. Post 1991 rating derived from ultrasonic data and refined in June 2003 to align with more recent high flow gaugings. Current rating (from June 2003) is a composite: theoretical weir equation used below 0.34m and ultrasonic data from 2003-07 plus check gaugings used to derive the rating at higher levels. There is uncertainty regarding the modular limit of the structure, possibly due to weed/vegetation growth downstream and there are few high flow gaugings.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Small (9 sq.km), relatively low-lying catchment on moderate permeability bedrock, but with significant Boulder Clay cover. Predominantly arable with some grassland and around a tenth of built-up area. No known catchment changes.	Responsive natural regime with no known artificial influences.
23022	North Tyne at Uglydub	241.5	NY7126287574	371262.0	587574.0	55°10'53.8119"N 2°27'10.1599"W	55.18161	-2.45282	North Tyne	Uglydub	135.0	EA-NE	023022	23	1983-01-01		FV		80.0	8.0	true	false	false	false	false	false	false	true	false	false	false	false	false	SR	1982-05-01	2023-09-30	8.183	0.334	1984-02-29	1984-02-29	155.0	2015-12-05	2015-12-05	1.49	2.94	6.523	16.3	17.85	0.5	15128	15021	99.293				134.9	213.7	337.6	470.6	602.7	1359	1262	0.5297	0.0146	0.1013	0.3054	0.0067	0.6046	0.0025	0.0408	0.3049	0.0023	0.037	0.8066		0.1552	0.0038	0.4222	0.3563	0.62	0.268	0.788	111.4	55.09	39.6	52.0	10.6	27.29	14.55	339	106	0.13	134.9	243.2	0.267	0.947	0.0206	0.0			0.0005					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir measuring compensation flow and hydropower releases from Kielder Reservoir.	Flat-V weir. Owned by Northumbrian Water, operated by EA.	Theoretical rating.	Theoretical rating applied to period of record and data reprocessed in 2015, high flows decreased and low flows increased. Drop out at the end of May 2015 due to reduced compensation flow from Kielder.	Upland catchment. Geology: predominantly shales and sandstones of the Lower Carboniferous series, with nearly 80% superficial deposits of peat and boulder clay. Extensively afforested with moorland headwaters.	Measures compensation flow, prescribed flows, abstractions and overspill from Kielder Reservoir; also releases to support hydropower - maximum release of 15.4 cumecs gives pulsed hydrograph but sub-daily pulses to 1992 concealed in dmfs.
23033	Rede at Otterburn	180.63	NY864944	386400.0	594400.0	55°14'36.9699"N 2°12'55.5845"W	55.2436	-2.21544	Rede	Otterburn		EA-NE	023033	23	2000-08		VA				true	true	false	true	false	false	false	true	false	false	false	false	false		2000-06-27	2023-09-30	3.938	0.219	2006-07-25	2006-07-27	133.4	2015-12-05	2015-12-05	0.408	0.809	1.454	9.474	15.96	0.28	8496	8414	99.035	2000-06-27		143.113	151.0	218.5	319.5	462.3	578.0	1124	1024	0.2709	0.0107	0.4834	0.2221	0.0043	0.2669	0.003	0.2805	0.4424	0.0017	0.0072	0.6579	0.0675	0.2676		0.231	0.407	0.49	0.31	0.963	110.6	51.15	33.8	45.4	9.6	28.11	14.68	329	122	0.16	151.0	180.63	0.404	0.712	0.0305	0.0005			0.0003			1999		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel peak flow station draining the Cheviot Hills.	Originally a four path ultrasonic gauge in open channel, installed to develop a rating. Channel is contained to 3.2m, where after it flows over a 60m wide flood plain on the right bank. All transducers mounted in the channel. Ultrasonic gauge removed in 2010.	One peak flow rating applied across period of record derived from ultrasonic velocity data and check gaugings. Rating includes estimation of out of bank flow, which was not measured by the ultrasonic meter. The current rating is known to over-estimate flows above bankful (approx. 2.8m) and is currently (July 2022) being reviewed.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	An elongated catchment draining southwards from the Cheviot Hills. Partly within Kielder Forest Park, land use largely upland forestry and rough grazing. No known catchment changes.	Catchment includes Catcleugh Reservoir, which controls 40 sq.km of the catchment.
24001	Wear at Sunderland Bridge	657.8	NZ2652037734	426520.0	537734.0	54°44'02.0029"N 1°35'22.8289"W	54.73389	-1.58967	Wear	Sunderland Bridge	40.2	EA-NE	024001	24	1957-10-01		CB	613.0		10.0	true	true	true	true	false	false	false	true	false	true	false	false	true	SRGE	1957-10-01	2023-09-30	11.355	0.903	1959-10-04	1959-10-04	317.0	2009-07-17	2009-07-17	2.01	3.46	5.88	25.9	40.1	0.43	24106	23910	99.187	1957-10-01		191.813	39.5	116.1	286.3	515.1	745.3	970	932	0.0843	0.1422	0.5333	0.1836	0.0413	0.0825	0.119	0.4576	0.3041	0.0338	0.0083	0.5794		0.4123	0.0015	0.1149	0.4076	0.47	0.342	0.978	97.7	43.94	35.8	46.9	10.1	71.51	40.1	301	95	0.2	39.5	661.17	0.488	0.726	0.0347	0.0148	0.615	0.505	0.0193	0.76	0.497			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weirs provide longest flow record on the Wear, reservoirs affect 7% of the upstream catchment.	Compound broad-crested weirs within the arches of road bridge; total crest length 38.7m.	Control is a compound broad-crested weir within the arches of the downstream road bridge. Flows up to 1.06m stage are contained by vertical arch walls, high flows are well above this, the tapping point is within the drawdown effect. Weed growth in summer may cause overestimation of flows. Rating originally based on theoretical weir rating, subsequently fitted to check gaugings up to 3.4m (375 cumecs), wade gaugings at low flows and cableway above. One peak flow rating applied throughout. Flood Studies Report grade B.	Flows for the period 1957-73 reprocessed using rating fitted to current meter gaugings. Full record reprocessed in 2001 to give improved fit to gaugings, reviewed again in 2019 and reprocessed with rating D to slightly increase flows below 7 cumecs, high flows unchanged. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Predominantly upland catchment on mainly Carboniferous formations (Limestone, Millstone Grit and Coal Measures). Half the catchment is overlain by superficial deposits (peat in headwaters, Boulder Clay in lower reaches). Land use is half grass pasture, with moorland headwaters, arable and some urban development in lower reaches. No known catchment changes.	Gives steep sided hydrographs, often with multiple peaks. Significant artificial influences: reservoirs in catchment (Burnhope, Waskerley and Tunstall with total direct catchment area of 45 sq.km); STW effluent forms significant portion of low flows; minewater discharges (regime altered by pit closure) and, in drought years, minimum flows supported by Kielder transfer.
24002	Gaunless at Bishop Auckland	93.0	NZ214307	421400.0	530700.0	54°40'15.3185"N 1°40'10.9144"W	54.67092	-1.6697	Gaunless	Bishop Auckland	64.8	EA-NE	024002	24	1958-10-01	2004-06-01	C	63.0	65.0	39.0	true	false	false	false	false	false	false	false	false	false	false	false	false	I	1958-10-01	2004-06-01	0.93	0.032	1974-03-10	1974-03-10	24.3	2000-11-06	2000-11-06	0.158	0.348	0.532	1.93	3.03	0.5	16681	11764	70.523				64.0	107.0	172.8	301.9	454.5	789	729	0.0535	0.2885	0.5108	0.0373	0.096	0.0486	0.2748	0.5774	0.0285	0.0707	0.0383	0.0227		0.9391		0.0081	0.8216	0.42	0.37	0.999	61.0	38.06	30.8	39.6	10.0	33.3	16.08	189	102	0.19	64.0	92.05	0.42	0.792	0.0482	0.0352	0.673	0.5	0.048	0.79	0.511			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir. Station closed in June 2004 due to recurring problems with high flow data.	Crump weir, 9m broad. Station closed in 1983 due to the uncertainty in the high flows. Station re-opened in April 1997 to provide flow data for the Lower Gaunless but closed in June 2004 due to recurring problems with high flow data.	Backs up from the River Wear and drowns making high flows highly suspect.	Weekly variations apparent during low flow periods in early flow series.		Artificial influences evident, particularly early in the record and most notably at low flows.
24003	Wear at Stanhope	171.9	NY9836639040	398366.0	539040.0	54°44'46.7389"N 2°01'36.8575"W	54.74632	-2.0269	Wear	Stanhope	202.0	EA-NE	024003	24	1958-01-01		CC		180.0	14.0	true	true	true	true	false	false	false	false	false	true	false	false	true	SE	1958-10-01	2023-09-30	3.946	0.235	1959-09-06	1959-09-06	139.0	2015-12-05	2015-12-05	0.507	1.02	1.745	9.531	15.7	0.33	23741	23435	98.711	1958-09-24		125.313	202.4	325.8	473.0	615.5	745.3	1313	1279	0.0377	0.0008	0.7204	0.2098	0.003	0.028	0.003	0.4023	0.5609	0.0031		1.0			0.0045	0.2903	0.1873	0.59	0.3	0.978	132.2	50.81	42.4	55.3	10.4	23.47	13.24	472	75	0.17	202.7	173.49	0.347	0.739	0.0195	0.0016			0.0015			2016..2017	2017-02-07..2018-08-23	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir gauging the upper Wear catchment. Flow regime influenced by Burnhope reservoir.	Compound Crump profile weir located in a steep rocky section, overall width 19.1m, central low crest width 7.6m, Larinier fish pass completed August 2018. Wing walls raised in 1967. A temporary cableway was used d/s of the weir in late 1960s-early 1970s.	Weir suffers periodic upstream gravel accumulation, formerly limited by a gravel trap, now ineffective. Flows contained on left bank up to 3.1m until July 2007 when the left wing wall was repaired and raised. Instruments originally on right bank but poor for measuring low flows due to sand and gravel deposition. Instruments moved to left bank from mid-1990s but stilling well thought to suffer from drawdown at high stages >1.5m. A second instrument was reinstated on the right bank in 1998 to improve measurement at high flow but left bank gauge remained the primary data until Feb 2002, when reverted fully to the right bank. In July 2007 the inlet pipe was extended by 2m to improve measurement at low levels due to the accumulation of gravel around the pipe. Two peak flows ratings applied across period of record, pre- and post- fish pass construction (2018), refined using hydraulic modelling. Model gives confidence in rating performing well at high flows. Flood Studies Report grade A1.	Bypassing on the left bank affected flow events in 1995, 1999 and 2005. Flow of January 2005 event may be underestimated due to problems with gravel build up blocking the inlet pipe to the stilling well affecting level measurement. Weir repair and fish pass works commenced September 2017 resulting in inaccurate flow data until August 2018. Various periods of suspect flows throughout the record as a result of measurement problems due to gravel deposition and drawdown at high flows. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Steep Pennine catchment. Mainly Lower Carboniferous Limestone, overlain by peat in headwaters and boulder clay and alluvium in valley. Some forestry but around three quarters grass pasture and moorland and some arable farming. No known catchment changes.	Very flashy response and extremely peaked flows. Burnhope reservoir (catchment area 19 sq.km) has noticeable effect; net export of water.
24004	Bedburn Beck at Bedburn	74.9	NZ1179932192	411799.0	532192.0	54°41'04.7178"N 1°49'06.6248"W	54.68464	-1.81851	Bedburn Beck	Bedburn	109.0	EA-NE	024004	24	1959-01-01		CC		70.0	13.6	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1959-10-01	2023-09-30	1.221	0.063	1995-08-22	1995-08-23	34.3	2009-07-17	2009-07-17	0.147	0.36	0.674	2.76	4.11	0.46	23376	23312	99.726	1959-01-01		27.263	109.9	194.8	322.2	432.1	532.6	948	895	0.2527	0.0271	0.3096	0.3985	0.0016	0.2794	0.0165	0.2729	0.4299	0.0009		0.8205		0.1795		0.0753	0.1641	0.59	0.362	0.999	109.0	43.76	34.8	45.1	10.0	17.31	9.84	316	95	0.33	110.3	74.12	0.138	0.728	0.0105	0.0007			0.0006					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir set in a deep valley with progressive afforestation and felling practices.	Compound Crump profile weir. No cableway. A steep drop d/s makes drowning unlikely. Set in a deep valley.	Compound Crump profile weir, 2.4m wide low flow crest, 10.3m overall crest length (2:1 u/s and 5:1 d/s slopes). Flanking weir crests are 0.3m above central low flow crest. May be out of bank on right bank behind gauging hut in largest events (>2.1m stage) but well contained on left bank by steep slope and bypassing likely to be minimal. Difficult to gauge at high flows although this is now possible with ADCP and ARC boat. Single peak flow rating applied across period of record. Good fit to available gaugings. Flood Studies Report grade A1 to 2m.	Missing between Sep-Oct 1978 (reason unknown) and 10-12/08-2002 due to a tree affecting levels. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly upland catchment, on Millstone Grit in north and Coal Measures to south, a quarter of the catchment overlain by drift cover of Boulder Clay and peat. Land use is upland moorland, grass pasture and coniferous forest. Progressive afforestation and felling (Hamsterley Forest) since gauge established may have created changes in hydrological regime.	Natural regime, no known artificial influences.
24005	Browney at Burnhall	178.5	NZ2590438688	425904.0	538688.0	54°44'32.9806"N 1°35'56.9621"W	54.74249	-1.59916	Browney	Burnhall	43.9	EA-NE	024005	24	1954-01-01		CB		60.0	15.0	true	true	true	true	false	false	false	true	true	false	false	false	false	GI	1954-12-01	2023-09-30	1.602	0.089	2016-09-12	2016-09-12	67.1	2009-07-17	2009-07-17	0.229	0.524	0.852	3.38	5.36	0.49	25141	24773	98.536	1954-10-21		38.4	47.1	104.1	198.4	287.8	377.9	752	743	0.1204	0.2581	0.5304	0.0172	0.0646	0.1097	0.2691	0.5522	0.0157	0.0528				1.0	0.007		0.3984	0.41	0.331	0.999	77.5	39.28	33.3	43.0	9.9	35.43	20.28	197	90	0.25	47.1	179.0	0.287	0.785	0.0265	0.0273	0.648	0.794	0.0314	0.806	0.778			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir in a deep valley. Diurnal flow regime influenced by minewater discharge up to 1997.	Compound broad-crested weir (17.6m broad, low crest 5.5m) within a deep valley and has a steep fall downstream (makes drowning and bypassing unlikely). All crests are 0.3 m long in direction of flow. Divide piers inserted and wing walls raised in 1968. Two flight Larinier pass (600mm wide with 100mm baffles) installed in a by-pass channel on the left bank Aug-Sep 2016.	No cableway but some boat gaugings carried out. Theoretical daily flow rating with check gaugings. Three ratings applied across period of record. Original rating theoretical and refined when piers and wing walls altered (1968). The fish pass has a separate stage measurement gauge and rating, flows calculated by addition of the weir flow and the Larinier flow from their respective rating curves. Flood Studies Report grade A1.	Minewater discharges stopped in 1997 which has affected homogeneity of low flow record; record 2003 low flow sequence, whilst in a notably dry period, eclipses previous minima. Engineering works 28/10/1988 - 21/11/1988: daily flows removed from NRFA. After a high flow event on 05/10/2021 tree and debris stuck on the weir, building up over a year before removal on 22/11/2022. River levels likely impacted although extent is unknown. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Coal Measures with just under half the catchment overlain by superficial deposits (mainly Boulder Clay). Half land use is improved grass pasture, with some woodland, and arable in lower-lying areas. No known catchment changes.	Minewater discharges influence low flows and create distinct diurnal pattern although impact on annual runoff is limited.
24006	Rookhope Burn at Eastgate	36.5	NY9528339084	395283.0	539084.0	54°44'48.0897"N 2°04'29.2728"W	54.74669	-2.0748	Rookhope Burn	Eastgate	241.0	EA-NE	024006	24	1957-01-01	1980-12-31	CC		45.0	18.1	true	true	true	true	false	false	false	false	false	false	false	false	false	E	1957-10-01	1980-06-30	0.777	0.006	1959-06-03	1959-06-03	22.74	1979-03-02	1979-03-02	0.074	0.217	0.396	1.751	2.742	0.35	8309	8309	100.0	1960-10-01	2002-02-04	24.62	241.2	346.3	456.5	552.6	612.4	1217	1126	0.0207		0.7205	0.2579	0.0002	0.0116	0.0006	0.4127	0.5737	0.0013		1.0				0.2499	0.1006	0.59	0.293	0.994	119.4	52.02	39.8	50.8	10.2	14.56	7.19	451	116	0.19	241.2	36.6	0.496	0.938	0.0177	0.0026			0.0001					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir. Station closed in 1980, but reopened as a level-only site in February 2000 for flood warning purposes.	Two-stage compound Crump weir, 8.8m broad, low crest 1.5m wide, on a natural waterfall 0.6km u/s of confluence with the River Wear. Discontinued 1980; re-opened February 2000 as a level-only flood warning site. Wing walls were removed on closure, and central low-flow crest raised to level of flanking weirs on reopening. Subject to considerable gravel accretion.	Modular throughout the range. Bypassed on both banks above wing walls. One peak flow rating applied across period of record. Gaugings confirm theoretical rating. Flood Studies Report grade A1.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A steep moorland catchment. No known catchment changes.	Flashy response with peaked hydrographs. No known artificial influences.
24007	Browney at Lanchester	44.6	NZ1650546207	416505.0	546207.0	54°48'37.6476"N 1°44'41.0049"W	54.81046	-1.74472	Browney	Lanchester	110.0	EA-NE	024007	24	1968-01-01	1983-12-31	CC		54.0	20.0	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1968-02-01	1983-10-31	0.55	0.017	1981-09-08	1981-09-08	13.83	1978-12-28	1978-12-28	0.072	0.141	0.27	1.286	1.905	0.45	5752	5752	100.0	1967-12-07	1983-06-01	10.981	109.5	168.3	255.0	324.3	377.9	797	797	0.1277	0.113	0.7169	0.0306	0.0051	0.1122	0.2189	0.6445	0.0217	0.0027				1.0			0.2704	0.59	0.333	1.0	75.4	40.49	34.8	44.8	10.1	15.29	8.72	252	74	0.37	109.5	44.67	0.157	0.732	0.0148	0.0014			0.0009			1967		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir in a rural catchment. Station closed in 1983.	Compound Crump weir (10m wide, low crest 2m wide) with crest tapping. Discontinued 1983; re-opened May 2002 as a level-only site but not maintained as a flow site and badly affected by silt (therefore no confidence in rating).	No bypassing. One peak flow rating applied across period of record checked to moderate level by current meter gauging. Flood Studies Report grade A2.		A rural catchment. No known catchment changes.	Hydrographs are prominently peaked and often have multiple peaks. No known artificial influences.
24008	Wear at Witton Park	455.0	NZ17283090	417280.0	530900.0	54°40'22.3546"N 1°44'00.8481"W	54.67288	-1.73357	Wear	Witton Park	76.8	EA-NE	024008	24	1972-01-01		FV		7.0	9.3	true	true	true	true	false	false	false	true	false	true	false	false	true	SRP	1972-12-01	2023-09-30	7.914	0.701	1976-09-07	1976-09-07	241.0	1991-02-23	1991-02-23	1.2	2.3	4.06	18.4	27.5	0.42	18566	18428	99.257	1972-12-01		223.3	75.9	183.4	360.6	550.7	745.3	1071	1035	0.0931	0.0478	0.5761	0.2567	0.0092	0.0873	0.0335	0.4322	0.4344	0.0091		0.8381		0.1619	0.0022	0.1654	0.2293	0.59	0.338	0.97	114.6	46.36	38.2	50.2	10.2	50.14	27.21	365	91	0.2	76.0	454.63	0.385	0.772	0.0239	0.0032			0.0035					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal flat V weir. Flow regime influenced by Burnhope and Tunstall reservoirs.	Velocity area station with informal flat V weir (25.3m overall, approx 1:20 side slopes) low flow control of rectangular section. Cableway.	Flat V station prone to non-modularity and drowns at 0.815m. Flood banks both sides prevent bypassing. Gauge boards adjusted in July 2003 as a survey confirmed the average error as 70mm too low. One peak flow rating (Rating C) applied to the full period of record. Subsidence of weir between 1981 and 1991 is not thought to have impacted high flows. Gauging by cableway to flood levels, rating curve fitted to check gaugings.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9). Rating reviewed in 2022 and data reprocessed from 1975.	Predominantly upland Pennine catchment on mainly Carboniferous Limestone and Millstone Grit, with just under half the catchment overlain by superficial deposits (Boulder Clay and peat). Nearly two thirds grass pasture, with extensive moorland in headwaters, mixed land use in the lower valley. No known catchment changes.	Catchment contains Burnhope, Waskerley and Tunstall reservoirs (total direct catchment area 45 sq.km), and has a net export of water. Transfers by Kielder Tunnel from the Tyne catchment are made in drought years, entering the River Wear at Frosterley.
24009	Wear at Chester le Street	1008.3	NZ2830451226	428304.0	551226.0	54°51'18.1246"N 1°33'38.3713"W	54.85503	-1.56066	Wear	Chester le Street	5.5	EA-NE	024009	24	1977-01-01		FVVA	314.0		8.3	true	true	true	true	false	false	false	true	false	true	true	false	true	RG	1977-09-01	2023-09-30	14.94	2.25	2006-07-19	2006-07-19	338.7	2000-11-07	2000-11-07	3.152	5.148	7.98	33.35	49.16	0.47	16831	16801	99.822	1977-01-01		252.711	4.7	88.6	213.0	473.5	745.3	885	855	0.0906	0.2173	0.4831	0.1255	0.0693	0.0887	0.2041	0.4465	0.205	0.0527	0.0587	0.3812		0.5601	0.0269	0.0756	0.4646	0.4	0.351	0.984	87.7	41.84	34.6	45.0	9.9	103.28	61.23	249	90	0.17	4.7	1005.0	0.559	0.779	0.0414	0.0246	0.659	0.659	0.0313	0.798	0.648			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir close to the tidal limit of the Wear. Flow regime influenced by reservoirs, abstractions and minewater discharges.	Flat V weir in 33m wide channel, close to tidal limit of Wear but this is not thought to affect the tailwater level.	Non-standard flat V weir (1:2, 1:2 profile, 1:40 cross-slope), becomes non-modular at moderate flow and fully drowned at high flow. Spills onto wide left bank floodplain above 1m stage, floodplain gently rises for some distance before flattening off but largest peaks cover much of the recreation grounds between the river and the A167 dual carriageway. One peak flow rating applied across period of record, checked by gaugings from upstream bridge to 3.8m stage (330 cumecs)(within 15% of AMAX1) with fairly stable extrapolation. Flow is not affected by tidal limit downstream. Vertical tile eel pass installed in 2015.	Gaugeboard survey in 2013 identified historic error between 06/2000 and 09/2013, levels in this period lowered by 36mm and flows re-processed. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Carboniferous Limestone and Millstone Grit, with over two thirds of the catchment overlain by superficial deposits (mainly Boulder Clay). Land use half grass pasture, moorland in Pennine headwaters, arable and built-up areas in lower valley. No known catchment changes.	Peaks of very large events are flattened. Reservoirs in catchment include Burnhope and Tunstall. In drought years low flows supported by Kielder transfer (flows maintained >2 cumecs). Abstraction for Wearside water supply is upstream of gauging station at Lumley. Also affected by minewater discharges (regime has changed since pit closures). Artificial influences created a distinctive diurnal variation, especially at low flows, until 2004.
24011	Wear at Burnhope Reservoir	20.5	NY8558439487	385584.0	539487.0	54°45'00.4547"N 2°13'31.7514"W	54.75013	-2.22549	Wear	Burnhope Reservoir	337.8	EA-NE	024011	24	1991-01-01		TP B			17.0	true	false	false	false	false	false	false	true	false	false	false	false	false	S	1992-01-01	2023-09-30	0.572	0.055	2005-07-11	2005-07-11	27.71	1995-01-31	1995-01-31	0.099	0.121	0.141	1.6	2.99	0.24	11596	11596	100.0				340.7	419.9	547.8	679.6	745.3	1579	1573	0.0383		0.5126	0.4235		0.0365		0.17	0.7735	0.0012		1.0				0.4799	0.2481	0.59	0.243	0.847	134.1	56.47	49.5	66.8	11.1	8.5	4.7	551	70	0.37	340.7	20.61	0.1	0.767	0.0067	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Thin-plate weir with broad-crested flanks monitoring compensation flows and spillage from Burnhope Reservoir.	Thin-plate weir with broad-crested flanks monitoring compensation flows and spillage from Burnhope Reservoir and a small natural catchment.			Catchment geology: Carboniferous Limestone and Millstone Grit.	Flow regime influenced by Burnhope Reservoir.
25001	Tees at Darlington Broken Scar	818.4	NZ2592313748	425923.0	513748.0	54°31'06.1344"N 1°36'03.8126"W	54.51837	-1.60106	Tees	Darlington Broken Scar	37.2	EA-NE	F3501	25	1956-01-01		CC		420.0	5.2	true	true	false	true	false	true	false	true	true	true	false	true	true	SRP	1956-10-01	2023-09-30	18.442	0.023	1959-10-16	1959-10-16	439.0	2015-12-05	2015-12-05	2.18	5.01	9.52	44.1	66.19	0.35	24471	24462	99.963	1956-01-01		382.7	36.1	109.7	370.7	605.2	884.8	1226	1122	0.0446	0.1298	0.4548	0.3384	0.0123	0.036	0.1292	0.3356	0.4817	0.0082	0.0767	0.9036		0.0198	0.0251	0.3093	0.5153	0.54	0.354	0.945	81.7	46.76	39.6	52.1	10.5	85.6	45.78	361	105	0.21	36.1	847.7	0.719	0.742	0.0526	0.0029			0.0045					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir with two low flow crests. Heavily influenced by reservoir storage, abstractions and discharges throughout the period of record.	Compound Crump profile weir with total crest length of 63.9m. Two low-flow crests total 9.1m. Gauged ultrasonically from 2002 but this was abandoned in 2011 due to poor performance. D/s level measurement installed 2003. No changes to control since construction apart from fish pass (1992-1993) inserted in low flow weir. There have been bank breaches in the past, and updated modelling work in Jan 2024 indicates that the right bank overtops into the Cleasby washlands at around 3.2m stage. This means that only the very highest AMAX events are affected.	Modular up to approx. 2.5m. Hydraulic modelling suggests up to 20% bypassing flow at > 100 year return period. Single peak flow rating applies across the period of record, extrapolated using hydraulic model. Flood Studies Report grade A1 for all except one occasion.	Three AMAX events (Aug 1986, Jan 1995 and June 2000) have stage values within 1mm of one another as a result of overtopping; evidence suggests 2000 was the highest and may have been 25-30% higher. 1959 minimum may have been influenced by abstraction immediately u/s. New rating developed in September 2014 and applied from 1982 onwards, reduced flows for the highest AMAX events. Historic daily mean flow data from 1956 - 1981 has not been reprocessed. Drop in flows 03-16/05/2017 caused by draw down for essential maintenance at Cow Green Reservoir. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly upland catchment, headwaters draining the Pennines. Mainly Millstone Grit and Carboniferous Limestone (sandstone, shale and limestone facies), with the majority of the catchment overlain by superficial deposits of peat and Boulder Clay. Moorland and rough pasture give way to more intensive agriculture in the lower reaches. No known catchment changes.	Significant export of water from direct supply reservoirs (six reservoirs with a total area of 180.7 sq.km totalling 22.1% of catchment) progressively influencing during record period (Selset 1960, Balderhead 1965, Cow Green 1970). Cow Green operation includes winter flood storage drawdown, and river regulation to support abstraction and statutory minimum flows. U/s abstraction for industry during 1960s subject to a minimum 5MGD passing weir; continued until Balderhead Reservoir completed. Significant export of water from direct supply and abstraction u/s. Some regulation from Cow Green Reservoir. Import from Tyne via Kielder Tunnel in exceptional drought years.
25002	Tees at Dent Bank	217.3	NY9312925968	393129.0	525968.0	54°37'43.6727"N 2°06'28.6030"W	54.6288	-2.10795	Tees	Dent Bank	227.0	EA-NE		25	1956-01-01	1974-12-31	CC		440.0		true	false	false	false	false	false	false	false	false	false	false	false	false	R	1956-10-01	1974-07-31	7.688	0.099	1957-06-20	1957-06-26	129.2	1968-12-22	1968-12-22	0.626	2.09	3.489	19.04	30.55	0.24	6513	5783	88.792				225.9	385.9	556.5	679.7	884.8	1756	1576	0.0076	0.0008	0.4549	0.5082	0.0006	0.0053	0.0004	0.2102	0.7693	0.0011		1.0			0.0106	0.5579	0.2199	0.6	0.277	0.933	105.1	54.48	48.6	66.5	11.1	35.3	18.28	544	110	0.15	226.3	219.02	0.556	0.946	0.0351	0.0			0.0001					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir replaced by 25018 in 1971.	Compound Crump weir 39.3m broad. Station replaced by 25018 (Middleton-in-Teesdale) in 1971.		Notable low flows in the 1950s predate construction of Cow Green Reservoir.	Upland catchment draining from the Pennines. Geology: mostly Carboniferous Limestone, some Millstone Grit.
25003	Trout Beck at Moor House	11.4	NY7578233513	375782.0	533513.0	54°41'45.8258"N 2°22'38.1598"W	54.69606	-2.37727	Trout Beck	Moor House	533.0	EA-NE	F3509	25	1957-01-01		CC		41.3	40.0	true	true	true	true	false	false	true	true	false	false	false	false	false	N	1957-10-01	2023-09-30	0.563	0.004	2018-07-15	2018-07-26	28.0	1979-03-25	1979-03-25	0.02	0.087	0.191	1.57	2.32	0.13	24106	19873	82.44	1957-01-01		15.182	535.1	573.9	649.0	752.6	841.7	2027	1905	0.0031		0.0789	0.9078				0.0004	0.9987	0.0009		1.0				0.9872		0.64	0.227	1.0	92.0	59.86	53.0	75.7	11.7	5.91	3.29	657	47	0.55	535.1	11.39	0.656	0.704	0.0409	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound crump weir. Closed in 1980 but re-opened in 1991 as part of a global environmental research initiative.	Three Crump-profile crests (1:2, 1:5 slopes), totalling 12.8 m wide, with central low flow crest of 1.5 m; no cableway. River ice above weir may affect rating in winter, and in severe winters may freeze in well giving a flat float trace (e.g. 1963, 1979). Inaccessible in severe winters (e.g. 1979). Dividing piers added, creating flanking weirs, and abutment walls altered to alleviate shoaling problem by narrowing channel, in 1962. Closed in 1980 but recommissioned 1991 for global environmental research initiative. Data presented for the present structure, from water year 1962/63.	U/s shoaling and low winter temperatures affected precision of flows. Two peak flow ratings applied across period of record, valid until station closure in 1980, and after recommissioning in 1991, respectively.	Severe winters in 1963 and 1979 caused the river to freeze resulting in a flat float trace. Missing data 19/08/2001-09/11/2001 due to lack of access due to foot and mouth disease, logger data overwritten and lost as a result of the rolling memory. Missing data 07-21/01/2003 due to telemetry issues. Missing data 24/07/2003-31/31/08/2003 due to site refurbishment works. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Small, relatively remote, upland catchment located in a nature reserve in upper Teesdale. Former lead mining area with hushing (channnels created by deliberate dam burst) in upper catchment. Part of National Nature Reserve managed by English Nature. Catchment is almost entirely covered by peaty moorland, developed mainly on Carboniferous Limestone. No known catchment changes.	Responsive natural regime. No known artificial influences.
25004	Skerne at Darlington South Park	250.1	NZ2839912942	428399.0	512942.0	54°30'39.5832"N 1°33'46.3998"W	54.511	-1.56289	Skerne	Darlington South Park	34.1	EA-NE	F3702	25	1956-01-01		CC+CB		51.0	10.3	true	true	true	true	false	false	false	false	false	false	false	false	false	GEI	1956-10-01	2023-09-30	1.621	0.197	1990-08-02	1990-08-02	42.76	1979-03-29	1979-03-29	0.392	0.685	0.93	3.28	5.29	0.51	24471	23570	96.318	1956-01-01		21.214	36.5	58.4	96.2	143.5	218.3	683	644	0.0506	0.475	0.2922	0.0001	0.1722	0.0375	0.499	0.313	0.0075	0.1408	0.8508	0.0045		0.1446	0.0673	0.0437	0.8285	0.32	0.398	0.977	34.2	37.1	28.9	37.3	9.9	48.85	26.62	100	148	0.22	36.5	224.19	0.897	0.885	0.1205	0.0694	0.733	0.667	0.091	0.858	0.668	1985		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir with a fish pass. Flow regime influenced by reservoir, minewaters and sewage effluent.	Compound broad-crested non-standard weir, not purpose built but unlikely to drown. On low-lying ground, formerly the floor of a boating lake, under concrete foot bridge. Fish pass with a small Crump weir constructed winter 1995/1996 - acts as an orifice at high flows. Channel rehabilitation u/s to improve aquatic habitat and maintain low flows.	Often out of bank, but the overbank flow passes over the two side weirs. At the highest levels bridge soffit influences upstream level. The weir and fish pass flows are combined (from 2015), and stage and rating only applies to the weir. One peak flow rating applied across period of record. Reasonable fit to available gaugings. Flood Studies Report grade B due to catchment changes (A2 for structure).	Site temporarily closed from June 2007 after being vandalised. Not reinstated until 29/09/2009. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Catchment underlain by highly permeable Magnesian Limestone, but nearly all the catchment overlain by superficial deposits, mainly Boulder Clay. Dominated by mixed agriculture, considerable urban development d/s in Darlington and Aycliffe. Mixed agricultural land use and significant floodplain drained fen peat (carrs) where overbank flood storage may attenuate extreme flood peaks.	Hurworth Burn reservoir (13.4 km2, 6% of catchment) in headwaters, no longer used for water supply. Pumped minewaters can augment flow, but this contribution declines over time. Excess flow from the Cocker Beck is diverted (u/s of Darlington) directly to the Tees. Significant sewage effluent component in low flows.
25005	Leven at Leven Bridge	196.3	NZ4443112072	444431.0	512072.0	54°30'07.3058"N 1°18'55.5166"W	54.50203	-1.31542	Leven	Leven Bridge	5.2	EA-NE	F3802	25	1959-01-01	2008-05-28	CB		70.0	23.0	true	true	true	true	false	false	false	false	false	false	true	false	false	EN	1959-10-01	2008-05-28	1.892	0.088	1976-09-04	1976-09-05	71.55	1968-11-02	1968-11-02	0.249	0.517	0.873	4.248	6.78	0.42	17773	17710	99.646	1959-01-01	2008-05-28	43.32	2.6	62.6	92.0	257.1	452.6	727	726	0.1308	0.4265	0.3288	0.0588	0.0444	0.1078	0.3708	0.4184	0.0839	0.0187	0.0412	0.0844	0.5168	0.3576	0.1556	0.008	0.6292	0.34	0.381	0.994	75.9	40.45	33.3	43.6	10.1	44.61	27.05	126	300	0.23	2.6	194.15	0.835	0.933	0.1067	0.0098	0.56	0.956	0.0137	0.736	0.967	2005		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir with bypass Crump weir. Station closed 2008 and replaced by 25029.	A pre-existing two-stage compound broad-crested weir 17.4m wide, with a bypass Crump profile weir 4.6m wide, adapted for gauging in 1959. The site is badly silted u/s and difficult to maintain. Station closed in May 2008 and replaced by a new station 6km u/s (25029).	Sharp bend and road bridge just u/s of weirs. Large drop downstream, therefore believed to be modular throughout range. Tidal effects are rare, water level at weir footings ponded to high tide level since 1995 by Tees Barrage. Some limited bypassing occurs via overspill on u/s bend. Suffered from siltation upstream of the weir which may have affected rating curve. Theoretical rating but lower limb amended to fit check gaugings. Gauged to almost QMED. One peak flow rating applies across period of record.	Bypassed once in 2000, but thought to be due to a bridge blockage; 2000 flood peak may consequently be unreliable, though capacity of weir and bridge calculated as 107 cumecs. Suspect daily flow data removed 04/08/2005 - 06/01/2006 during construction of fish pass. Original rating amended based on check gaugings, slight reduction in low flows, high flows unaffected. Rating only applied from 1982, earlier daily flows left unchanged. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Headwaters drain from the Cleveland Hills. Mixed geology of mostly Permian/Jurassic age, generally low permeability. Almost all the catchment is overlain by superficial deposits, mainly Boulder Clay. Mixed agriculture, with some moorland and forestry in headwaters, minor urban development in the lower valley. No known catchment changes.	Sensibly natural regime. No known artificial influences.
25006	Greta at Rutherford Bridge	86.1	NZ0336112209	403361.0	512209.0	54°30'18.6716"N 1°56'58.5890"W	54.50519	-1.94961	Greta	Rutherford Bridge	223.0	EA-NE	F3523	25	1960-01-01		CC	98.0	95.0	19.9	true	true	true	true	false	false	true	true	true	true	true	false	true	N	1960-10-01	2023-09-30	2.332	0.035	1995-08-22	1995-08-22	59.2	2015-12-05	2015-12-05	0.113	0.376	0.832	6.133	9.79	0.22	23010	23005	99.978	1960-09-01		73.776	221.9	292.5	409.1	492.3	590.1	1268	1127	0.0123	0.008	0.3405	0.6176	0.0044	0.0049	0.0026	0.2283	0.7624	0.0018		1.0				0.5769	0.3476	0.62	0.241	0.999	68.3	55.22	40.3	54.5	10.7	24.01	12.76	402	54	0.3	222.1	86.81	0.515	0.96	0.0421	0.0006			0.0013			1959		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound crump weir at the end of a rock fall.	Compound Crump profile weir, total width 19.2m, central low flow crest 3m wide. Constructed at the head of a natural rock fall. No change in control since construction, no permanent cableway although gauged with a temporary winch. Flow is turbulent even when low.	Remains modular throughout range. Some bypassing over wing walls, before they were extended, but in extreme cases wrack marks were surveyed in. Ice has been reported in the stilling well in severe winter conditions. Theoretical daily flow rating improved with check gaugings. Previous rating based on structure dimensions and valid up to top of dividing piers. New rating developed in 2010 and modified in March 2013 to improve derivation of low flows, applied from the start of the record. Check gaugings show good fit to rating up to maximum gauging of 1.13m. Flood Studies Report grade B.	Extreme flood level in August 1986 exceeded stilling well floor level; peak may be slightly under-estimated as a result. Missing data in February 2008 due to inaccurate drift correction. Flows reprocessed from 1982 onwards in 2002. New rating applied to whole record in March 2013. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A steep, eastward draining catchment in the Pennines developed largely on Millstone Grit, with nearly the whole catchment overlain by superficial deposits of peat and boulder clay. Mainly moorland and grass pasture. No known catchment changes.	Responsive, natural regime. No known artificial influences.
25007	Clow Beck at Croft	78.2	NZ2818610113	428186.0	510113.0	54°29'08.1022"N 1°33'59.2110"W	54.48558	-1.56645	Clow Beck	Croft	29.4	EA-NE		25	1961-01-01	1980-06-30	TP		26.4	18.3	true	false	false	false	false	false	false	false	false	false	false	false	false	I	1961-10-01	1980-06-30	0.751	0.031	1964-10-20	1964-10-23	29.45	1963-03-06	1963-03-06	0.093	0.211	0.391	1.68	2.393	0.54	6848	6848	100.0				28.4	71.7	128.9	191.7	464.4	765	720	0.0359	0.5818	0.2967	0.0306	0.0305	0.027	0.6014	0.3112	0.0463	0.0108	0.1797	0.8059		0.0144	0.0114		0.986	0.42	0.499	0.983	37.2	35.56	31.8	40.2	10.3	33.86	16.43	136	54	0.36	28.5	80.93	0.798	0.927	0.0987	0.0055	0.351	0.998	0.007	0.638	0.895			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound rectangular thin-plate weir, discontinued in 1980.	Compound rectangular thin-plate weir, 6.6m broad (low crest: 2m). Discontinued 1980.	Site drowns due to backing up from the Tees so high flows unreliable.
25008	Tees at Barnard Castle	509.2	NZ0463216641	404632.0	516641.0	54°32'42.0236"N 1°55'47.6846"W	54.54501	-1.92991	Tees	Barnard Castle	133.0	EA-NE	F3504	25	1966-01-01		CC		625.0	3.9	true	true	true	true	false	false	false	true	false	false	false	false	false	SRI	1966-06-02	2023-09-30	14.386	1.808	1970-06-03	1970-06-03	318.9	1968-03-23	1968-03-23	3.871	5.555	8.21	31.55	46.4	0.44	20940	18220	87.011	1964-10-01		261.3	131.3	252.4	449.8	642.7	884.8	1442	1310	0.0266	0.0083	0.4881	0.4448	0.0062	0.0206	0.0063	0.305	0.6504	0.0045		0.9957		0.0043	0.0165	0.4134	0.3585	0.6	0.321	0.912	99.0	50.43	43.4	57.8	10.7	54.95	26.88	452	109	0.2	131.3	510.15	0.53	0.944	0.0345	0.0012			0.0026			2012..2013	2012-10-01..2014-03-07	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir. Major rebuild of the weir during 2012/13 included the addition of a Larinier fish pass and the removal of the old pool fish pass on the left bank. Regime heavily influenced by reservoir storage and abstractions.	Compound Crump weir 52.2m broad with central low flow crest (6.7m). Instrument hut moved to left bank in 2006 and cableway installed. Major refurbishment 2012-14 included addition of Larinier fish pass (3m wide).	Weir remains modular and no by-passing, but overtops left bank (contained on right) and can surge up Deepdale Beck. Theoretical calibration (check gaugings up to Qmed). Original peak flow rating confirmed by hydraulic modelling in 1998. Weir reconstruction and fish pass addition (2012-2013) necessitated a re-rating using standard weir equations. Check gaugings approaching QMED since rebuild confirm new rating, which applies from 07/03/2014 when the majority of the temporary works were removed.	Step-changes in flow June-September 2014 due to increased outflows from Cow Green Reservoir (to flush and clean Cow Green weir, also seen at 25018 and 25023). No daily or peak flow data are available from 01/10/2012 to 07/03/2014 due to temporary in river works and diversion of flow during weir reconstruction. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Upland Pennine catchment developed mostly on Carboniferous Limestone and Millstone Grit, with nearly four fifths of the catchment overlain by superficial deposits of peat in headwaters and Boulder Clay in valley. Land use almost entirely moorland and grass pasture. No known catchment changes.	Responsive regime. Six reservoirs in catchment with a total area of 180.7 sq.km (35.5% of catchment), progressively influencing during record period (Balderhead 1965, Cow Green 1970). River regulation from Cow Green to support PWS abstractions and minimum flows; Cow Green operation includes winter flood storage drawdown. Export from direct supply (Lartington); import from Tyne via Kielder Tunnel only in exceptional drought. Net export of water.
25009	Tees at Low Moor	1264.0	NZ3644210549	436442.0	510549.0	54°29'20.3215"N 1°26'20.2742"W	54.48898	-1.43897	Tees	Low Moor	12.2	EA-NE	F3606	25	1969-01-01		FVVA		20.0	9.5	true	true	true	true	false	false	false	true	false	false	true	false	false	SRPGEI	1969-09-01	2023-09-30	20.828	1.57	1978-05-30	1978-05-30	486.0	2012-09-25	2012-09-25	3.12	6.18	11.0	47.4	68.7	0.39	19753	19473	98.582	1969-08-05		406.762	4.6	56.2	211.8	568.8	884.8	1047	966	0.0478	0.2621	0.397	0.2283	0.0473	0.0369	0.2708	0.3213	0.3269	0.0362	0.2849	0.6568		0.0583	0.0359	0.2148	0.6378	0.4	0.374	0.958	65.8	43.6	36.2	47.3	10.3	122.71	71.03	271	106	0.19	4.6	1267.12	0.91	0.785	0.0784	0.0169	0.677	0.68	0.0224	0.828	0.689			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Lowest station on the River Tees. Substantial reservoir influence on flow regime.	Velocity area station with 47.2m wide flat V low flow control (1:2 u/s and d//s slopes, 1:40 cross slopes) constructed in 1974. No wing walls. Originally had a natural control. Lowest station on R. Tees.	River overtops banks approx. 200m u/s and flows around back of station building, but is too deep to be wade gauged. Flow spills onto the right bank at 4.6m, but bypass flow is limited as the bank steepens quickly and the flow is contained. The left bank is overtopped at around 6.17m stage, with the potential for large volumes of bypass flow for a small increase in level. Significant hysteresis; modular to 0.5m. Theoretical calibration of daily flows at low flows; calibration at medium to high flows based on current meter gauging to high stages from permanent cableway, with supplementary info from hydraulic modelling. Two peak flow ratings applied across period of record, the most recent is valid from May 1974.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Geology: mostly Carboniferous (Millstone Grit and Carb. Limestone), some Magnesian Limestone; superficial deposits of boulder clay, with peat in headwaters. Moorland and rough pasture in upper catchment, mixed agriculture in lower reaches, with some urban development. No known catchment changes.	Significant overbank storage in lower reaches can attenuate flood peaks. Substantial artificial influences on the flow regime, including seven reservoirs with total area 194.6 sq.km (15.4% of catchment), influencing floods through attenuation and storage, and low flows through regulation releases (Cow Green, and in extreme droughts by Kielder transfers), and abstractions. Significant net export of water.
25011	Langdon Beck at Langdon	13.0	NY8521530915	385215.0	530915.0	54°40'23.0993"N 2°13'50.8110"W	54.67308	-2.23078	Langdon Beck	Langdon	373.0	EA-NE	F3589	25	1969-01-01		FV		6.0	40.0	true	true	true	true	false	false	false	true	false	false	false	false	false	N	1969-10-01	2023-09-30	0.417	0.004	2015-10-03	2015-10-04	10.75	2005-01-07	2005-01-07	0.02	0.065	0.143	1.167	1.789	0.19	19723	13397	67.926	1969-01-01		15.647	371.6	438.8	549.0	641.9	702.1	1457	1463	0.006		0.5129	0.4722		0.0083	0.0005	0.2207	0.7705			1.0				0.7005	0.2995	0.59	0.237	1.0	123.4	58.21	44.2	59.4	10.7	7.21	4.19	544	208	0.39	371.6	12.79	0.173	0.742	0.0124	0.0006			0.001					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir, daily flows discontinued in 1983, reopened for peak flows in 2001.	Flat-V weir (6m wide; 1:2, 1:2 crest slopes; cross-slope: 1:10) on a rocky bed with steep gradient. Discontinued in 1983 but analogue recorder maintained in operation. Site reopened for peak flows in 2001.	Good d/s fall therefore no backwater effects from Harwood Beck and a high modular limit. No by-passing although some flow over left bank floodplain in the August 2004 event, otherwise well-confined. River ice above weir may affect rating in winter. Theoretical peak flow rating to top of wing walls applied across period of record. Rating changed in 2014 to fill a gap at a stage of 0.26-0.3m. Any flows calculated above a stage of 1.5m will be out of bank and flagged as estimated. Good fit to available gaugings up to 0.4m stage but recent higher gaugings suggest rating may under-estimate peak flows and another rating review is required.	Peat slip blocked stilling well in summer 1983 thunderstorm, and gravel has blocked previously. New rating applied to period of record in 2014 resulting in a slight increase in flows around a stage of 0.26-0.3m. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A catchment of high moorland in the Tees headwaters. No known catchment changes.	Natural flow regime. No known artificial influences.
25012	Harwood Beck at Harwood	25.1	NY8497830916	384978.0	530916.0	54°40'23.1062"N 2°14'04.0411"W	54.67309	-2.23446	Harwood Beck	Harwood	374.0	EA-NE	F3581	25	1970-01-01		FVVA		17.5	25.0	true	true	true	true	false	false	false	true	false	false	false	false	false	N	1969-09-01	2023-09-30	0.993	0.03	1995-08-22	1995-08-23	28.8	1995-01-31	1995-01-31	0.066	0.204	0.41	2.65	3.97	0.23	19753	19752	99.995	1969-10-01		33.426	374.0	425.1	541.6	644.8	713.1	1739	1577	0.0019		0.7631	0.2303		0.0029		0.3777	0.6194			1.0				0.3388	0.4645	0.59	0.261	1.0	121.0	53.45	49.3	68.7	11.2	9.44	5.57	539	147	0.27	374.0	24.58	0.302	0.743	0.0212	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir for low flow control at a velocity-area station located in a small Pennine catchment. Natural regime.	Flat-V weir (1:2 crest slopes, 1:10 cross-slope) for low flow control at velocity-area station. Shallow gravel bedded reach, leading to problems with gravel accumulation on weir apron and at the stilling well inlet; most gravel accumulates at the left side, in the past it was removed every 2-3 years but returned with flood flows and continued gravel removal no longer sustainable. Investigations have indicated the gravel is unlikely to affect the discharge characteristics of the weir. Tapping pipe extended in 2007 to avoid blockage. Site difficult to access in bad weather.	No bypassing. Doesn't become non-modular. Only gauged at low flows until 2013. Since then ADCP gaugings have been carried out up to 0.935m. Daily flow rating extended using weir equation. Goes out of bank at 1m stage. One peak flow rating applied across period of record. An ADVP was installed in 2008 16m upstream from the primary stage recorder to improve level and flow measurement, but removed in 2012 after it was damaged during high flows. At high flows the rating under estimates flow compared to the check gaugings - probably due to the 'p' value being different to that used in the theoretical rating due to the accumulation of gravel at the site. More gaugings at higher levels are required to confirm this before the rating can be changed.	Blocking of the tapping pipe caused elevated low flows from 2002 - 2007: these should be treated with caution. Data for the period of 05/02/2007 to 28/09/2007 is suspect whilst tapping pipe was repaired. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Small catchment high in the Pennines, underlain mostly by Carboniferous Limestone with extensive peat and Boulder Clay cover. Moorland and grass pasture land use. No known catchment changes.	Natural, responsive regime. No known artificial influences.
25018	Tees at Middleton in Teesdale	242.1	NY9488125019	394881.0	525019.0	54°37'13.0469"N 2°04'50.8464"W	54.62029	-2.08079	Tees	Middleton in Teesdale	211.2	EA-NE	F3505	25	1971-01-01		FVVA	360.0	14.0	6.1	true	true	true	true	false	false	false	true	false	false	false	false	false	SR	1971-05-01	2023-09-30	9.045	0.882	1976-07-01	1976-07-01	208.0	1995-01-31	1995-01-31	2.27	3.68	5.11	19.5	29.2	0.42	19146	19007	99.274	1971-08-01		213.141	213.1	369.2	547.0	674.8	884.8	1704	1533	0.0109	0.0008	0.4835	0.477	0.0014	0.0069	0.0007	0.2352	0.743	0.0017		1.0			0.0138	0.5286	0.2348	0.6	0.283	0.939	109.3	53.89	47.9	65.1	11.1	37.72	19.15	531	115	0.15	213.1	242.01	0.538	0.976	0.0336	0.0002			0.0005			1971..1981		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal flat V Crump weir. Flow regime influenced by Cow Green reservoir.	Velocity area station, with informal flat V Crump weir (31.8m wide) for low-flow control constructed in July 1972. Cableway. Replaced earlier station at Dent Bank (25002). Straight reach, gravel and rock bed on steep gradient.	Limited modular range. Some bypassing at the back of the building at high flows; but a reasonable station for high flows. Measured level may be affected by draw-down and turbulence (due to rocky bed) at high flows. One peak flow rating applied across period of record. Well gauged to QMED and uniform cross section allows extrapolation to 3m.	Maintenance on weir winter 1995-1996 resulted in some artificially low flows. Step-change in flows June-September 2014 due to increased outflows from Cow Green Reservoir to flush and clean Cow Green weir (also seen at 25008 and 25023). The 71/72 AMAX event on 11/01/1972 before the post-weir rating is valid is rejected. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Upland catchment draining from the Pennines. Geology: largely Carboniferous Limestone (sandstone, shale and limestone), some Millstone Grit, with extensive peat cover in headwaters, and boulder clay in valley. Land use: moorland and rough grazing. No known catchment changes.	Flows affected by Cow Green reservoir (24.4% of catchment) - influencing entire record through regulation for abstractions and minimum flow, storage attenuation and winter drawdown.
25019	Leven at Easby	14.8	NZ5846608686	458466.0	508686.0	54°28'12.6583"N 1°05'57.8112"W	54.47018	-1.09939	Leven	Easby	101.3	EA-NE	F3808	25	1971-01-01		FV			25.0	true	true	true	true	false	false	false	true	false	false	false	false	false	N	1971-05-01	2023-09-30	0.205	0.032	2022-08-12	2022-09-05	10.1	2000-11-07	2000-11-07	0.048	0.089	0.131	0.378	0.559	0.59	19146	19112	99.822	1971-04-19		5.09	111.6	155.4	209.7	285.3	332.6	855	830	0.2097	0.1224	0.4349	0.1829	0.0464	0.1348	0.0501	0.5294	0.2853	0.0004		0.2869	0.7131		0.1821		0.0503	0.38	0.524	1.0	128.0	38.58	37.8	52.0	10.5	9.53	5.58	215	261	0.04	112.5	15.09	0.184	0.769	0.0195	0.0009			0.0043			1970..1996		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V Crump profile weir with mild steel crest. Station closed in 1996 but reopened for flood warning purposes in 2003.	Flat-V Crump profile weir (5m wide) with mild steel crest in rectangular concrete river section. Station closed 31/12/1996 but re-opened in February 2003 for flood warning. Stokesley (d/s) has been subject to significant flooding from the Leven in the past (the last being in 1976), and historic flood marks, recorded at the police station there, give some support for the high growth rate observed in the AMAX series.	Fast approach could occasionally give super-critical flow. Flows well contained up to 1.13m and have never been recorded above bankfull. The maximum gauged flow is 2.55 cumecs, well below Qmed. Theoretical daily flow rating by Wallingford Hydraulics Research, checked at low flows by current meter. One peak flow rating applied across period of record.	Gap in record Jan 1997 to Feb 2003 due to station closure. Temporary gauge at Low Easby (Nov 1996 to Feb 2005) has some overlap with Easby record but not currently used to infill missing peaks. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Steep natural catchment draining the northern margin of the Cleveland Hills, with predominantly rough pasture and woodland. Geology is Upper Lias rock (blue-grey clays and ironstones) overlain by Lower Oolite sandstone series, with sand, gravel and Boulder Clay in valleys. Grazing and arable land. No known catchment changes.	No known artificial influences.
25020	Skerne at Preston le Skerne	147.0	NZ29212378	429210.0	523780.0	54°36'30.0437"N 1°32'57.4483"W	54.60835	-1.54929	Skerne	Preston le Skerne	67.5	EA-NE	F3705	25	1972-01-01		VA	40.0		28.9	true	true	true	true	false	false	false	true	true	false	false	false	false	E	1972-11-08	2023-09-30	0.886	0.027	1992-08-01	1992-08-01	23.3	1978-12-28	1979-03-29	0.102	0.26	0.399	2.0	3.12	0.42	18589	18559	99.839	1972-11-01		14.222	69.4	79.7	107.4	149.7	218.3	696	654	0.0525	0.5202	0.2897	0.0002	0.1278	0.0451	0.5429	0.3105	0.0089	0.0896	0.9142	0.0029		0.0829	0.076	0.0466	0.7956	0.32	0.437	0.977	35.9	34.77	29.0	37.7	9.8	29.5	13.88	112	145	0.21	69.4	152.76	0.859	0.766	0.1191	0.0386	0.657	1.099	0.0489	0.818	1.092	1972		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal low-flow control. Pre 2012 flow regime was influenced by net export of water from Hurworth Burn Reservoir.	Velocity area station. Cableway. No wing walls. Straight approach. All flows contained in channel. An informal low-flow control (steel trench sheeting with reinforced concrete capping) with 1:20 cross-slope and 6m wide, was built in July-August 1978 to overcome weed growth problems. Prior to this, summer low flows could be over estimated by 100%.	Two peak flow ratings applied across period of record, the most recent is valid from September 1978. Rating by fit to current meter gaugings before and after low-flow control. Very well gauged at high flows - up to maximum recorded.	Pre-1978 flows influenced by weed growth; weed growth continues to be problematic. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Relatively dry catchment mainly on high permeability Magnesian Limestone; almost all the catchment is overlain by superficial deposits, mainly boulder clay. Moorland headwaters; mixed agricultural land use and significant floodplain drained fen peak (carrs) where overbank flood storage may attenuate extreme flood peaks. Just over a tenth of the catchment is built-up. No known catchment changes, other than decommissioning of reservoirs.	Hurworth Burn reservoir covers 13.4km2 of the catchment. In the past, there was a small export of water from two headwater reservoirs (servicing Hartlepool) which used to affect low flows. These reservoirs are no longer in use, having been sold in 2012. Minewater additions affect parts of the early record. Up to half of dry-weather flow consists of effluents, mainly sewage.
25021	Skerne at Bradbury	70.1	NZ3181828494	431818.0	528494.0	54°39'01.9812"N 1°30'30.2610"W	54.65055	-1.50841	Skerne	Bradbury	72.4	EA-NE	F3707	25	1973-01-01		VA	8.0		20.5	true	true	true	true	false	false	false	false	false	false	false	false	false	SPGE	1973-06-01	2023-09-30	0.433	0.018	1992-08-03	1992-08-03	16.3	1979-03-29	1979-03-29	0.063	0.139	0.202	0.932	1.67	0.43	18384	18291	99.494	1973-01-01		5.911	76.0	88.0	111.5	145.6	185.3	692	662	0.0512	0.5441	0.2689		0.1222	0.0486	0.5395	0.3134	0.0153	0.0778	0.9374			0.0626	0.1095		0.768	0.32	0.472	0.961	40.2	34.36	29.8	38.6	9.8	21.84	10.14	115	166	0.22	76.0	75.7	0.784	0.759	0.0992	0.0363	0.638	1.001	0.0459	0.816	0.992	1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal low-flow control.	Velocity area station with informal flat V low-flow weir. Cableway. Trapezoidal channel with stone-pitched banks. Prior to March 1973, the invert of a new road bridge 40m d/s of cableway was intended as control; however, silting made the control very unstable. The informal low-flow control (steel sheeting and reinforced concrete cap) was built 1973, with cross-slope of 1:10. Embankments prevent any by-passing although there could be ponding on the flood plain. Approach is affected by heavy growth of weed in summer.	Informal structure becomes non-modular at stages greater than 0.4m. High flow control by bridge invert 10m below weir. Weed growth on crest causes up to 10% low flow over-estimation. Multiple peak flow ratings applied across period of record, the most recent is valid from January 1990. Due to a 9 year gap, the gaugings began to show a wide deviation from the previous rating. The current rating (1990-present) does not adequately fit the gaugings due to the variable effect of reed/weed growth, a low non modular limit and a possible change in control. Increased weed management is required at this site and a ADVP may be deployed to try to improve the record.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Relatively dry catchment, mostly on highly permeable Magnesian Limestone, but with extensive superficial deposits (mostly Boulder Clay). Mixed agriculture, just over 10% of the catchment is built-up. No known catchment changes.	Small net export of water from Hurworth Burn reservoir in headwaters (13.4 sq.km, 19% of catchment) which ceased operation in 2012.
25022	Balder at Balderhead Reservoir	20.4	NY931182	393100.0	518200.0	54°33'32.3588"N 2°06'29.5517"W	54.55899	-2.10821	Balder	Balderhead Reservoir	284.4	EA-NE		25	1971-01-01	1980-12-31	CC				true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1974-09-01	1980-12-31	0.625	0.0	1974-09-01	1980-11-15	7.757	1979-03-03	1979-03-03	0.0	0.0	0.168	1.729	2.235	0.23	2314	2069	89.412				287.2	347.5	425.1	480.2	562.2	1355	1172	0.0033		0.2883	0.6369	0.001	0.0007		0.0817	0.862	0.0028		1.0				0.6743	0.1924	0.62	0.24	0.768	72.5	57.79	40.0	52.5	10.4	11.66	5.59	420	72	0.28	287.2	21.11	0.221	1.195	0.0191	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir below Balderhead Reservoir. Closed December 1980.	Compound Crump weir (low crest: 6.2m) below Balderhead Reservoir. Station closed by Northumbrian Water in December 1980.				Highly regulated flow regime.
25023	Tees at Cow Green Reservoir	58.2	NY8139428806	381394.0	528806.0	54°39'14.4111"N 2°17'23.6219"W	54.654	-2.28989	Tees	Cow Green Reservoir	465.4	EA-NE	F3507	25	1971-01-01		FV		21.5	14.0	true	false	false	false	false	false	false	true	false	false	false	false	false	SR	1971-09-01	2023-09-30	2.998	0.169	2022-05-01	2022-05-01	31.7	2005-01-10	2005-01-10	0.486	1.832	2.716	5.68	7.051	0.65	19023	16427	86.353				467.9	512.0	599.9	718.6	884.8	1997	1804	0.0006		0.3333	0.5963		0.0005		0.0192	0.9281	0.0016		1.0				0.6287	0.016	0.63	0.232	0.777	89.1	59.4	52.4	74.6	11.6	17.87	9.48	609	85	0.25	467.9	58.52	0.505	1.048	0.0337	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir below Cow Green Reservoir.	Flat-V weir (18.32m broad) below Cow Green Reservoir.		Drop out 10th-24th January 2017 due to use of turbines. Missing data 9th June-10th July 2017 due to issues with the telemetry.		Highly regulated flow regime.
25029	Leven at Foxton Bridge	183.6	NZ4555009381	445550.0	509381.0	54°28'39.8943"N 1°17'54.8065"W	54.47775	-1.29856	Leven	Foxton Bridge	4.9	EA-NE	F3803	25	2005-12-01		US				true	true	true	true	false	false	false	true	false	false	false	false	false		2007-01-01	2023-09-30	1.991	0.149	2015-08-11	2022-08-12	49.1	2012-11-26	2012-11-26	0.258	0.523	0.881	4.53	7.379	0.44	6117	6091	99.575	2007-01-01		36.72	19.5	66.4	95.3	262.7	452.6	733	732	0.1321	0.4136	0.3356	0.0621	0.0455	0.1089	0.3565	0.4271	0.0883	0.0189	0.0117	0.0891	0.5457	0.3535	0.1643	0.0084	0.6084	0.35	0.382	0.994	76.7	40.46	33.6	44.0	10.2	38.19	21.9	131	299	0.23	19.5	183.86	0.831	0.899	0.1084	0.0101	0.56	0.912	0.014	0.738	0.929	2005		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crossed-path, multi-path ultrasonic gauge, replaced 25005 7km downstream.	Crossed-path, multi-path ultrasonic flow gauge built under existing road bridge in 14m wide channel. Measures full range of flows. Replaced 25005 which closed in 2008. Station added to peak flows dataset in September 2020 (WINFAP Files v9).	Station has a purpose-built broad crested weir control, with a free gap to allow fish passage, to retain minimum levels required for ultrasonic gauge. Full range of flows are measured with no bypassing. Small right bank tributary joins just upstream with high sediment load, causes occasional path failures and sediment deposition. Gauged to around 70% of QMED.	Some data quality issues result from sediment deposition under the road bridge, thought to arise from the right bank tributary entering just upstream. Gauge error between July 2009 and July 2010 led to some over-estimation of flows during this period by around 15-30%. A power cut at the site resulted in missing data in late June/ early July 2020.	Headwaters drain from the Cleveland Hills. Mixed geology of mostly Permian/Jurassic age, generally low permeability. Almost all the catchment is overlain by superficial deposits, mainly Boulder Clay. Mixed agriculture, with some moorland and forestry in headwaters, minor urbanisation in Great Ayton, Stokesley and Hutton Rudby. No known catchment changes.	Sensibly natural regime. No known artificial influences.
25808	Burnt Hill at Moor House	0.05	NY752332	375200.0	533200.0	54°41'35.5974"N 2°23'10.5701"W	54.69322	-2.38627	Burnt Hill	Moor House		EA-NE		25	1954-06	1961-10	VN				false	true	false	true	false	false	false	false	false	false	false	false	false																				1953-12-01	1962-12-31	0.08	549.8	560.9	570.0	572.5	572.8	1790	1499				1.0					1.0			1.0				1.0		0.64	0.294	1.0	116.9	53.3	44.1	59.6	11.0	1.81	0.88	614	215	0.85	459.5	0.75	0.02			0.0	0.0		0.0			1961		pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A V-notch weir level only station. Affected by siltation problems at low flows. Peak flows only. Station closed December 1962.	A V-notch weir with stilling pool and water level recorder. Heavy silting was reported at times of low flow, with 400 cubic feet of silt removed over five years. Peak flow only station. Station closed 31/12/1962.	Zero of V notch is 0.532m on staff gauge. Imprecise at low flows, and inaccurate at high flows once water level rises above the top of the V notch at 0.324m above gauge zero. Single peak flow theoretical rating applied throughout. Confirmed by check gaugings. Flood Studies Report grade C due to uncertainty in extrapolation.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A very small upland catchment draining into the Tees via the Trout Beck. During the experimental period of recording the catchment was both burnt (being heather moorland) and artificially drained.	Runoff likely to be low during wintry conditions. No known artificial influences.
25809	Bog Hill at Moor House	0.05	NY773327	377300.0	532700.0	54°41'19.7801"N 2°21'13.1453"W	54.68883	-2.35365	Bog Hill	Moor House	518.0	EA-NE		25	1954-06-01	1961-04-01	VN				false	true	false	true	false	false	false	false	false	false	false	false	false																				1954-01-01	1962-12-31	0.066	514.9	516.6	529.9	550.7	552.8	1997	1757				1.0					1.0			1.0				0.4684		0.64	0.228	1.0	100.4	59.9	55.5	79.9	11.8	0.36	0.17	530	110	0.72	515.4	0.05				0.0	0.0		0.0					pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A V-notch weir level only station. Peak flow only station. Closed December 1962.	A V-notch weir with stilling pool and water level recorder. Peak flow only station. Station closed 31/12/1962.	Zero of V notch is 0.627m on staff gauge. Imprecise at low flows, and inaccurate at high flows once water level rises above the top of the V notch at 0.324m above gauge zero. Single peak flow theoretical rating applied throughout. Confirmed by check gaugings.	Runoff likely to be low during wintry conditions. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A very small upland catchment draining into the Tees via the Trout Beck. During the experimental period of recording the catchment was neither burnt nor artificially drained.	No known artificial influences.
25810	Sike Hill at Moor House	0.04	NY772332	377200.0	533200.0	54°41'35.9393"N 2°21'18.8710"W	54.69332	-2.35524	Sike Hill	Moor House	525.0	EA-NE		25	1956-09	1962-01	VN				false	true	false	true	false	false	false	false	false	false	false	false	false																				1956-09-01	1962-12-31	0.095	518.7	524.2	532.6	541.6	544.7	1995	1757			0.1829	0.8171					1.0			1.0						0.64	0.275	1.0	79.9	55.0	55.4	79.8	11.8	0.33	0.18	534	88	0.78	520.7	0.04				0.0	0.0		0.0			1955		pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A V-notch weir level only station, affected by heavy silting. Peak flow only station. Closed December 1962.	A V-notch weir with stilling pool and water level recorder. Prone to heavy silting, with 80 cubic feet removed in five years. Peak flow only station. Station closed 31/12/1962.	Zero of V notch is 0.551m on staff gauge. Imprecise at low flows, and inaccurate at high flows once water level rises above the top of the V notch at 0.332m above gauge zero. At 0.361m above the zero of the V bypassing begins over the horizontal top of the weir board, and on the left bank, bypassing the recorder. Single peak flow theoretical rating applied throughout. Confirmed by check gaugings.	Runoff likely to be low during wintry conditions. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A small upland catchment draining into the Tees via the Trout Beck. During the experimental period of recording the catchment was artificially surface drained.	No known artificial influences.
26001	West Beck at Wansford Bridge	192.0	TA064560	506400.0	456000.0	53°59'20.7573"N 0°22'43.3018"W	53.9891	-0.37869	West Beck	Wansford Bridge	5.1	YW		26	1953-01-01	1974-07-31	MIS	18.0	9.9		true	false	false	false	false	false	false	false	false	false	false	false	false	G	1953-10-01	1974-07-31	2.514	0.283	1965-03-10	1965-03-10	11.58	1965-12-10	1965-12-10	0.51	1.161	1.897	5.236	6.566	0.96	7609	7517	98.791				8.0	27.4	97.9	199.5	245.1	767	721	0.0396	0.6933	0.2308	0.0001	0.0139	0.031	0.8423	0.1113	0.0006	0.0146	0.9998		0.0002		0.1011		0.1239	0.32	0.897	0.991	55.1	10.45	33.7	42.9	11.1	37.39	20.73	105	107	0.31	8.0	195.56	0.515	0.629	0.0733	0.0079	0.512	0.632	0.0055	0.7	0.536			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound rectangular critical depth flume on West Beck at Wansford Bridge. Discontinued July 1974.	Compound rectangular critical depth flume. Discontinued July 1974.				Affected by heavy d/s weed growth during summer months.
26002	Hull at Hempholme Lock	378.1	TA0795749913	507957.0	449913.0	53°56'02.7278"N 0°21'25.5974"W	53.93409	-0.35711	Hull	Hempholme Lock	2.8	EA-Y	F3102	26	1962-01-01		MIS				true	false	false	false	false	false	false	false	false	false	true	false	false	PGI	1961-10-01	2022-09-30	5.281	0.046	1994-11-24	1994-11-24	134.0	2013-01-27	2013-01-27	0.521	1.53	2.604	8.077	10.9	0.73	22280	17089	76.701				2.6	9.7	68.6	164.9	245.1	732	698	0.0282	0.714	0.2115	0.0011	0.0227	0.0211	0.8497	0.1093	0.0011	0.0184	0.9999		0.0001		0.075		0.3176	0.31	0.808	0.991	43.4	15.61	32.7	41.6	10.7	46.8	22.8	79	122	0.28	3.8	397.23	1.504	0.504	0.1912	0.0103	0.581	0.708	0.008	0.736	0.666			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Two tilting-gate weirs with low flow notches. Regime influenced by PWS abstractions.	Two tilting-gate weirs, each 7.2m wide, each with a low flow notch on the upper edge.	Very flat gradient, occasionally drowns - for example, when there is a high tide. Very low flows possibly underestimated.	Peak flows 22/11/2014-25/11/2014 and 05/02/2015-06/02/2016 are regarded as suspect due to high tides causing the weir to become non-modular. Missing data in winter 2019/2020 due to instrument fault, unable to be infilled.	A predominantly rural catchment draining the Chalk outcrop of the Yorkshire Wolds. Contributing area partly defined by drainage network.	Appreciable PWS abstractions; residual flow of approx. 0.5 cumecs normally maintained by limiting u/s abstraction.
26003	Foston Beck at Foston Mill	57.2	TA0935854867	509358.0	454867.0	53°58'41.8934"N 0°20'02.4255"W	53.9783	-0.33401	Foston Beck	Foston Mill	6.4	EA-Y	F3120	26	1959-01-01		TP		6.4	19.0	true	true	true	true	false	false	true	true	false	true	false	false	true	GN	1959-10-01	2023-09-30	0.68	0.061	1992-03-24	1992-03-24	3.1	2012-12-31	2012-12-31	0.153	0.362	0.542	1.34	1.73	0.96	23376	23162	99.085	1959-04-01		1.778	7.0	13.1	77.1	136.0	162.9	723	698	0.0171	0.781	0.169		0.0155	0.0146	0.8673	0.1078	0.0024	0.0079	1.0				0.0071		0.27	0.3	0.878	0.987	48.4	10.43	31.6	40.6	10.2	24.01	15.04	77	147	0.27	9.0	59.59	0.844	0.412	0.1062	0.0052	0.439	0.914	0.0043			1958..1970		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Adjustable height, rectangular, sharp-edged weir sluice gate.	Flows measured by an adjustable height, rectangular, sharp-edged weir sluice gate (2.8m wide). Pre-1976, the sluice position was not accurately recorded and the computed flows are less accurate. Eel pass installed September 2012, to be operated only in eel migration season (April-October). Gate lift or drop alters datum, but it is rarely lifted. Weed growth may cause high peaks to be recorded, but station never bypassed. In contrast to much of catchment, station geology is alluvium overlying boulder clay.	No known end-contractions or bypassing. Drowning very unlikely due to the weir drop but weed growth can affect u/s levels. Eel pass designed to have minimal impact on the stage-discharge relationship. Single theoretical daily and peak flow rating confirmed by check gauging from bridge used throughout. Flood Studies Report grade A2 assumed due to complicated pen movement.	Anomalously high flows in July 2003 thought to be due to temporary damming by landowner. Similar high flow in May 2008 due to dam placed in channel for duck race. March 1999 peak slightly elevated due to lowering of the weir crest, releasing stored water from the ponded reach upstream. Naturalised flows available from the EA from 1995 to 2002. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A predominantly rural catchment draining the southern Chalk outcrop of the Yorkshire Wolds (but lower catchment is overlain with Boulder Clay with patches of alluvium, sand and gravel). No known catchment changes.	Groundwater influences the hydrograph with strong seasonal component, which seldom responds to rainfall. Small groundwater abstractions and sewage treatment discharge, probably affect flows but are insignificant at high flows. The local fishing club used to maintain the upstream level by adjusting the weir plate height.
26004	Gypsey Race at Bridlington	253.8	TA16546753	516540.0	467530.0	54°05'25.7693"N 0°13'10.9158"W	54.09049	-0.2197	Gypsey Race	Bridlington	11.0	EA-Y		26	1971-01-01	1985-12-31	C				true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1971-01-01	1985-12-31	0.277	0.0	1971-07-13	1985-11-21	3.447	1977-03-02	1977-03-02	0.0	0.012	0.104	0.732	1.247	0.9	5479	4412	80.526				10.9	50.6	103.6	161.0	212.6	748	720	0.0207	0.7878	0.1611	0.0001	0.0107	0.0229	0.8663	0.1072	0.0012	0.0023	0.9912		0.0087		0.0564		0.0741	0.3	0.952	0.986	51.1	6.28	31.8	40.4	10.4	42.74	23.57	105	135	0.1	11.0	257.15	0.375	0.831	0.0522	0.0039			0.0022					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir draining a predominantly Chalk catchment. Closed and replaces by 26005 in December 1985.	Crump weir 2.7m wide. Stream often dries up in summer. Station closed December 1985. Replaced by a gauge upstream 26005 (Boynton).	Theoretical rating.		Predominantly rural pervious (Chalk) catchment draining northern parts of Yorkshire Wolds. Topographical and groundwater divides not coincident.	Some groundwater abstractions in the catchment.
26005	Gypsey Race at Boynton	240.0	TA1368167755	513681.0	467755.0	54°05'35.3446"N 0°15'47.8929"W	54.09315	-0.2633	Gypsey Race	Boynton	16.8	EA-Y	F3004	26	1981-01-01		FV	3.8	3.8	54.0	true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1981-01-29	2023-09-30	0.241	0.0	1989-05-30	2023-09-17	5.05	2012-12-31	2012-12-31	0.0	0.009	0.052	0.651	1.01	0.93	15585	15447	99.115				15.9	53.4	105.4	161.6	212.6	750	722	0.0183	0.7881	0.1631	0.0001	0.0103	0.0207	0.8715	0.1042	0.0012	0.0022	0.9909		0.009		0.0584		0.0678	0.3	0.955	0.986	51.1	6.04	31.8	40.4	10.4	39.31	20.84	107	133	0.1	15.9	248.13	0.366	0.813	0.0517	0.0037			0.0019					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir in a groundwater influenced catchment. Replaced 26004.	Flat-V weir. Replaced the downstream gauge 26004 (Bridlington).			Permeable (Chalk) catchment draining northern side of Yorkshire Wolds. Predominantly (more than three quarters) arable and some pasture land use. Topographical and groundwater divides not coincident.	Baseflow dominated regime; the Gypsey Race ceases to flow during prolonged droughts. Some groundwater abstractions.
26006	Elmswell Beck at Little Driffield	136.0	TA0090557553	500905.0	457553.0	54°00'14.9508"N 0°27'43.0392"W	54.00415	-0.46196	Elmswell Beck	Little Driffield	20.0	EA-Y	F3185	26	1980-01-01		TP		6.5	128.0	true	false	false	false	false	false	false	true	false	false	false	false	false	GN	1980-03-22	2023-09-30	0.602	0.0	1989-10-24	2022-11-16	5.46	2012-12-29	2012-12-29	0.003	0.114	0.342	1.54	1.97	0.97	15898	15878	99.874				15.4	24.2	49.7	84.8	106.7	705	679	0.0147	0.7248	0.201		0.0149	0.0236	0.8808	0.0798		0.0147	1.0				0.0002		0.4643	0.31	0.819	0.982	25.8	17.26	31.6	41.0	10.8	6.49	3.25	52	168	0.68	15.4	8.82	0.397	0.762	0.0726	0.0116	0.371	0.968	0.0088	0.549	1.048			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Thin plate weir, subject to drowning caused by weed growth.	Thin-plate weir.	Subject to occasional drowning due to weed growth. Downstream level measurement will enable non-modular flows to be revised if necessary. New rating applied in 2015 to period of record extends flow estimates up to 0.4m.	Flows reprocessed in 2015 after new rating applied to period of record.	A rural catchment in the Yorkshire Wolds (Chalk).	Dry during prolonged drought conditions. Largely natural, baseflow dominated regime but, possibly, a minor net export may occur (resulting from groundwater abstraction).
26007	Catchwater at Withernwick	15.5	TA171403	517100.0	440300.0	53°50'44.6933"N 0°13'17.7162"W	53.84575	-0.22159	Catchwater	Withernwick	11.0	EA-Y		26	1965-01-01	1990-03-31	FL				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1965-02-25	1979-12-31	0.103	0.0	1965-08-16	1977-09-21	2.478	1971-01-26	1971-01-26	0.001	0.007	0.027	0.278	0.476	0.35	5423	5345	98.562				7.7	10.6	14.4	17.3	20.0	626	633	0.002	0.7519	0.1392	0.0074	0.0828	0.0064	0.9196	0.0707		0.002	1.0				0.0577		0.9423	0.3	0.433	1.0	9.0	40.94	31.0	37.7	10.4	7.09	3.66	14	179	0.34	10.9	10.85	5.665	0.929	0.5856	0.0046			0.007	0.619	1.37			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Wooden trapezoidal flume operated by University of Hull.	Wooden trapezoidal flume. Operated as part of an experimental catchment by University of Hull. Decommissioned in March 1990 (flume removed).		Data processed to 1979.	Low-lying agricultural catchment.	Natural flow regime.
26008	Mires Beck at North Cave	41.9	SE8899631631	488996.0	431631.0	53°46'24.3210"N 0°39'04.0117"W	53.77342	-0.65111	Mires Beck	North Cave	10.0	EA-Y	F3480	26	1986-01-01		C		6.3	28.0	true	false	false	false	false	false	false	true	false	false	false	false	false	G	1986-01-01	2023-09-30	0.249	0.013	1992-06-29	1992-06-29	3.62	2007-06-25	2007-06-25	0.049	0.131	0.202	0.482	0.626	0.87	13787	13787	100.0				9.3	30.0	79.3	138.7	164.0	697	690	0.0582	0.5907	0.2804	0.0007	0.0296	0.0828	0.7656	0.1274	0.0046	0.0195	0.5528	0.1184	0.3264	0.0024		0.0041		0.26	0.883	0.944	63.8	11.83	31.6	40.2	11.5	13.25	7.65	81	247	0.2	9.3	40.97	0.247	0.619	0.0421	0.0058	0.654	0.487	0.0096	0.614	0.568			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir with downstream level measurement in a baseflow dominated catchment.	Crump weir.	Downstream level measurement maintained to monitor non-modular conditions.		On south-west edge of Yorkshire Wolds. Spring source on scarp slope. Half of the western catchment is Jurassic strata, Upper Cretaceous Chalk in east, with no superficial deposits. Rural catchment, mixed agriculture and isolated patches of woodland.	Baseflow dominated. Groundwater PWS abstractions close to spring sources, and abstractions for summer spray irrigation and winter storage, can all influence patterns of low flows - net diminution of runoff.
26009	West Beck at Snakeholme Lock	242.2	TA0666855589	506668.0	455589.0	53°59'07.2658"N 0°22'29.1110"W	53.98535	-0.37475	West Beck	Snakeholme Lock	8.0	EA-Y	F3105	26	1988-01-01		EM		8.5	4.0	true	true	true	true	false	false	false	true	false	false	false	false	false		1988-10-07	2023-02-26	2.203	0.196	1990-11-11	1990-11-11	8.6	2003-01-10	2003-01-10	0.409	0.955	1.57	4.96	5.83	0.98	12561	12435	98.997	1988-10-07		5.621	7.9	27.3	97.9	199.4	245.1	767	721	0.0396	0.6932	0.2309	0.0001	0.0139	0.031	0.8421	0.1115	0.0006	0.0146	0.9998		0.0002		0.1012		0.124	0.32	0.897	0.991	55.1	10.45	33.7	42.9	11.1	37.97	21.31	105	107	0.31	7.9	195.6	0.521	0.636	0.0736	0.0079	0.512	0.642	0.0055	0.699	0.548			gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Electromagnetic station in a permeable Chalk catchment draining the Yorkshire Wolds.	Electromagnetic gauge (1988-2022) with buried magnetic coil in 8m wide channel. Measures the West Beck, Driffield Canal runs alongside (original course of West Beck) and is gauged separately (station 26010 until 2016, replaced by new gauge at Wansford Bridge not currently on NRFA).	Electromagnetic gauge in trapezoidal section. Weedgrowth in channel and shallow gradient leads to variable control and backwater, this does not affect the Electromagnetic gauge but prevents use of alternative stage:discharge relationship. Check gaugings to check accuracy of gauge and gap editing only. Electromagnetic gauge replaced by time-of-flight ultrasonic gauge in same section in October 2022.	Gauge has always been prone to drop outs and spikes in data. Early records edited using derived ratings and constant shifts but since 2001 validation has been limited to gross error checks and spike removal only. Check gaugings typically compare well with EM gauge though and record is considered good. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Permeable Chalk (Lower Cretaceous / Jurassic) catchment draining from the Yorkshire Wolds; some superficial deposits in lower catchment - note that chalk is harder than that found in Southern England. Surface and groundwater catchments are expected to differ considerably. Rural, mixed agriculture. Catchment includes a SSSI. No known catchment changes. NRFA catchment definition changed in 2015 review, previously included Driffield Canal.	Hydrology dominated by groundwater component (seasonal winter maxima) with superimposed, small rainfall runoff hydrographs. Small net export of water and some spray irrigation (trivial overall impact). On rare occasions levels are affected by the tide, although normal tidal limit is Hempholme.
26010	Driffield Canal at Snakeholme Lock	24.66	TA0666855589	506668.0	455589.0	53°59'07.2658"N 0°22'29.1110"W	53.98535	-0.37475	Driffield Canal	Snakeholme Lock	8.0	EA-Y	F3123	26	1988-01-01	2010-10-01	EM				true	true	false	true	false	false	false	false	false	false	false	false	false		1988-10-07	2010-09-30	0.734	0.256	1989-10-27	1989-10-27	3.54	2007-06-25	2007-06-25	0.41	0.534	0.64	1.15	1.35	0.95	8029	7990	99.514	1988-10-07	2014-07-11	2.02	7.9	13.2	77.5	146.1	176.7	729	699	0.0174	0.6836	0.2042		0.0533	0.0117	0.8512	0.0831	0.0005	0.0535	1.0				0.0322		0.3141	0.31	0.858	0.986	49.0	12.59	32.5	42.0	10.6	19.71	11.07	78	153	0.4	8.3	49.48	0.521	0.368	0.1001	0.0263	0.776	0.499	0.0248	0.833	0.487			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Electromagnetic station in a permeable Chalk catchment draining the Yorkshire Wolds.	Electromagnetic gauge in narrowed section of canal, 5.5m wide. Catchment nested within the West Beck, which flows alongside and is gauged separately (26009). Station replaced with velocity index station at Wansford Bridge 530m upstream, from 2010.	Electromagnetic gauge with buried coil, rectangular section, no known bypassing. Level control is from disused lock 170m downstream. Very low velocities lead to problems with sedimentation and excessive weed / reed growth. No stage-discharge relationship for this gauge and difficult gauging section due to weed. Since 2011 gaugings carried out upstream at Wansford Bridge. Gauged close to AMAX1.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	A small, rural catchment draining the Yorkshire Wolds, nested within the catchment of the West Beck. Land use is predominantly agricultural. Catchment is underlain by Chalk (Lower Cretaceous / Jurassic) but is notably harder than Chalk of Southern England. Drift to the east. No known catchment changes. NRFA catchment definition changed in 2015, previously included within West Beck (26009) now separated to show streams artificially captured to feed the Driffield Canal (includes Nafferton Beck and Water Forlornes).	Dominated by groundwater with seasonal winter maxima. Some artificial influences, including fish farm abstractions (non-consumptive) and spray irrigation (trivial overall impact).
26011	Market Weighton Canal at Wholsea Grange	43.3	SE8446234397	484462.0	434397.0	53°47'56.5116"N 0°43'08.8827"W	53.79903	-0.71913	Market Weighton Canal	Wholsea Grange	5.5	EA-Y	F3402	26	1989-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false		1989-01-01	2023-09-30	0.318	0.0	1990-08-05	2003-09-18	8.1	2007-06-26	2007-06-26	0.03	0.119	0.222	0.683	0.881	0.71	12691	12670	99.835				4.7	7.5	31.2	114.9	146.7	682	651	0.0478	0.5844	0.3042	0.0008	0.0451	0.0368	0.8124	0.1146	0.0068	0.0278	0.3443	0.0238	0.1432	0.4886		0.4707	0.0056	0.28	0.74	0.968	31.3	23.57	29.9	36.6	10.8	17.97	8.83	47	229	0.29	4.7	65.04	1.695	0.58	0.2967	0.0104	0.701	1.006	0.013	0.761	1.063			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir draining mainly rural catchment, headwaters in Yorkshire Wolds but much of catchment on very low lying, flat land.	Flat V weir 4m wide with 1:10 cross-slopes and vertical concrete wingwalls on Back Delfin / Market Weighton Canal system. Instrrument kiosk with stilling well on right bank. Mainly rural catchment, rising on southern escarpment of Yorkshire Wolds but quickly dropping onto flat plains close to the Humber.			Largely rural catchment with arable and some livestock farming. Geology is a mixture of permeable chalk in the upper catchment with lower permeability mudstone in the lower catchment. Much of the lower catchment is overlain by mixed permeability superficial deposits.	Relatively responsive regime but with strong underlying baseflow signal. Artificial influences from agricultural abstraction and some sewage treatment works discharges. Lower catchment is affected by artificial drainage modifying the natural flow paths. Former Market Weighton canal, now disused and partially filled in, splits part of the lower catchment and forces some of the natural drainage network to discharge downstream of the gauge, reducing the catchment area compared to the natural topography.
26012	Foulness at Holme House Farm	70.2	SE7797637277	477976.0	437277.0	53°49'33.3180"N 0°49'00.6795"W	53.82592	-0.81686	Foulness	Holme House Farm	6.0	EA-Y	F3412	26	1990-12-07		FV			26.0	true	false	false	false	false	false	false	true	false	false	false	false	false		1990-12-07	2023-09-30	0.528	0.011	1995-08-08	1995-08-08	1.7	1990-12-29	2023-09-19	0.04	0.139	0.294	1.7	1.7	0.61	11986	11977	99.925				6.0	8.3	11.8	99.1	163.9	680	634	0.0774	0.5394	0.3345	0.0018	0.0435	0.0664	0.7522	0.1562	0.0032	0.0213	0.1601		0.0571	0.7829		0.6461	0.1319	0.29	0.632	0.976	22.2	30.91	29.6	35.7	10.8	21.78	10.43	30	218	0.35	6.0	74.15	1.921	0.678	0.4074	0.0077	0.637	0.513	0.01	0.674	0.754			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir under the jurisdiction of the Market Weighton Internal Drainage Board.	Flat-V weir, badly affected by weed growth in the summer. Under the jurisdiction of the Market Weighton Internal Drainage Board.	Unsuitable for high flows but generally reasonable for low flows.	Data missing December 2013, March 2014 and April 2014 due to construction work on an eel pass.	The headwaters of the Foulness are fed by springs on the scarp slope of the Yorkshire Wolds. Land use: arable.
26013	Driffield Trout Stream at Driffield	53.33	TA0185256079	501852.0	456079.0	53°59'26.6078"N 0°26'52.8186"W	53.99072	-0.44801	Driffield Trout Stream	Driffield	12.7	EA-Y	F3193	26	2010-07		US				true	true	true	true	false	false	false	true	false	false	false	false	false		2010-07-28	2023-09-30	1.139	0.085	2022-11-13	2022-11-13	6.6	2021-02-10	2021-02-10	0.134	0.396	0.713	2.583	3.47	0.95	4813	4810	99.938	2010-07-27		2.7	12.7	21.5	56.8	114.3	156.1	732	690	0.0356	0.7777	0.1599	0.0003	0.0116	0.0324	0.8706	0.0856		0.0109	1.0				0.1341		0.2736	0.32	0.807	0.997	28.0	17.61	31.9	41.2	10.9	17.49	9.45	63	104	0.41	12.8	53.33	0.508	0.635	0.0934	0.0095	0.513	0.594	0.006	0.437	0.387	2009		gdf;gmf;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauge in chalk stream draining eastern flanks of the wolds.	Ultrasonic gauge in straight channel. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	Crossed-path, multi-path ultrasonic gauge in straight section of chalk stream. No stage discharge relationship due to shifting gravels and weed growth, despite weirs downstream and shallow gradient. Weed can be problematic for the gauge and requires regular maintenance to keep the gauge section clear. Gauge generally performs well in comparison with check gaugings. All flows contained, no by-passing.		Rural catchment on primarily chalk geology, highly permeable. Upper reaches of the topographical catchment mainly consist of dry valleys, the tributaries of the trout stream generally emerge from springs at the foot of the Yorkshire Wolds. This is the UK's most northerly chalk stream and is designated as a SSSI.	Highly baseflow dominated regime, displaying typical seasonal hydrograph with smaller rainfall response super-imposed onto the large baseflow hydrograph.
26014	Water Forlornes at Driffield	32.4	TA023583	502300.0	458300.0	54°00'38.1246"N 0°26'25.5449"W	54.01059	-0.44043	Water Forlornes	Driffield		EA-Y	F3175	26	1997-01		TP B				true	true	true	true	false	false	false	false	false	false	false	false	false		1998-01-23	2023-09-30	0.101	0.0	1998-09-16	2023-09-30	1.07	2021-02-15	2021-02-15	0.0	0.004	0.032	0.294	0.41	0.9	9382	9210	98.167	1970-01-01		0.424	18.6	52.5	107.6	151.2	176.7	758	721	0.0178	0.7036	0.2088		0.0165	0.014	0.9042	0.0701	0.0007	0.011	1.0						0.0699	0.31	0.949	1.0	65.5	6.51	33.2	42.9	10.7	13.28	7.8	104	153	0.32	18.6	32.41	0.115	0.59	0.0158	0.0062	0.725	0.065	0.0072	0.774	0.067	1997		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Thin-plate sharp edged weir, inside a broad-crested, vertical sided masonry weir in a rural catchment draining the Yorkshire Wolds.	Thin-plate sharp edged weir, inside a broad-crested, vertical sided masonry weir around 5m wide. Situated around 1.25km downstream of the source. Built in the early 1970s but fell into disrepair in the 1980s. Station re-commissioned in 1998. Previously station number 26803.	There is no need for a cableway as the watercourse is small enough to be safely gauged by hand at all flows. Peak flow rating derived from gaugings, and accounts for transition from thin-plate to broad-crested weir.	Dam-building by children regularly affects water levels. Regularly dries up completely. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A predominantly rural catchment draining the Yorkshire Wolds. Geology is Chalk overlain by drift and gravels. No known catchment changes.	No known artificial influences.
26015	Driffield Canal at Wansford Bridge	49.39	TA0642756089	506427.0	456089.0	53°59'23.6158"N 0°22'41.7081"W	53.98989	-0.37825	Driffield Canal	Wansford Bridge		EA-Y	F3125	26	2010-04-14		IV				true	true	true	true	false	false	false	true	false	false	false	false	false		2010-04-14	2022-09-30	0.889	0.364	2015-10-19	2015-10-19	2.83	2013-01-27	2013-01-27	0.49	0.629	0.756	1.47	1.79	0.94	4553	4546	99.846	2010-04-15		2.49						729	699																		0.31	0.859	0.998	49.2	12.56	32.5	42.1	10.6	190.8	10.49	78	153	0.4		49.39	0.499	0.344	0.0968	0.0264	0.776	0.469	0.0249	0.833	0.456			gdf;gmf;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Index velocity station on Driffield Canal, replaced earlier gauge at Wansford Snakeholme Lock (26010).	Index Velocity gauge with side-mounted H-ADVP in 8m wide canal. Replaced previous Electro-magnetic gauge at Snakeholme Lock (26010) 500m downstream of Wansford Bridge. Station added to peak flows dataset in August 2024 (WINFAP Files v13).	No formal control but index velocity rating performs well throughout the flow range. Some weed / reed growth in summer months can affect the velocity sensor. Check gauged to 74% of AMAX3. One index rating applied to period of record.	Occasional small gaps or periods of suspect data caused by weed and/or silt affecting the velocity sensor. Record overlaps for several years with 26010.	A small, rural catchment draining the Yorkshire Wolds, nested within the catchment of the West Beck. Land use is predominantly agricultural but includes the town of Driffield. Catchment is underlain by Chalk (Lower Cretaceous / Jurassic) but is notably harder than Chalk of Southern England. Drift to the east. No known catchment changes. Includes streams artificially captured to feed the Driffield Canal (includes Nafferton Beck and Water Forlorns).	Baseflow-dominated regime which peaks in winter/early spring and is lowest in late summer/autumn. Flood peaks typically a rainfall response super-imposed onto the strong baseflow signal. Some artificial influences from abstraction (fish farm, spray irrigation) and discharges (sewage treatment works, fish farm).
26016	Gypsey Race at Kirby Grindalythe	15.85	SE904675	490400.0	467500.0	54°05'43.6908"N 0°37'09.1879"W	54.09547	-0.61922	Gypsey Race	Kirby Grindalythe		EA-Y	F3009	26	1998-03		TP				true	true	true	true	false	false	false	false	false	false	false	false	false		1998-03-02	2023-09-30	0.022	0.0	1998-09-24	2022-11-14	0.189	2000-11-06	2000-11-07	0.0	0.007	0.014	0.052	0.07	0.91	9344	9289	99.411	1998-03-03		0.1	98.9	120.0	152.3	194.1	212.6	793	757	0.0079	0.7437	0.2162		0.0089	0.0092	0.9265	0.0629		0.0009	0.8857		0.1143					0.32	0.959	1.0	57.2	5.67	33.9	42.4	11.0	7.33	3.85	154	10	0.19	99.4	15.85	0.228	0.853	0.0305	0.0028	0.003		0.0					gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular thin-plate weir. Regime dominated by groundwater. Previously station number 26802.	Small, rectangular thin-plate, sharp-edged weir around 5.1 km downstream of the spring source. Approach to station can be subject to siltation. Built in the 1970's, station fell into disrepair but was re-commissioned in 1998.	Rectangular thin plate weir in low concrete wingwalls, just downstream of an arched bridge. Channel can be affected by weed and reed growth in summer. Channel can run dry and level drops below weir crest in drought years. Theoretically based peak flow rating, checked by current meter gauging (waded), applied throughout period of record.	Water levels occasionally subject to sudden fluctuations or spikes, thought to be due to children interfering with the weir and/or the annual duck race in July. These are generally removed during data QA. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A predominantly rural catchment draining the Yorkshire Wolds. Geology is Chalk with overlying alluvium and gravel in the valley bottoms. The topographical catchment may not match with the groundwater catchment. No known catchment changes.	Hydrological response dominated by groundwater. No known artificial influences.
26017	Ings Beck at South Newbald	14.2	SE9096836116	490968.0	436116.0	53°48'48.1737"N 0°37'11.5671"W	53.81338	-0.61988	Ings Beck	South Newbald		EA-Y	F3485	26	2000-05-24		C				false	true	false	true	false	false	false	false	false	false	false	false	false																				2000-05-24		0.5						725	704																		0.26	0.985	1.0	73.7	3.27	31.9	40.9	11.7	6.67	3.99	107	287	0.16	34.0	14.2	0.058	0.585	0.0083	0.0063	0.637	0.188	0.0094	0.693	0.238			gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir in mainly rural catchment draining south western edge of Yorkshire Wolds.	Low head Crump weir (0.2m high, 1.45m wide) built as monitoring for Newbald Becksies wetland nature reserve. Several boreholes and an automatic raingauge provide additional monitoring data for the wetland. Station added to peak flows dataset in September 2022 (WINFAP Files v11).	Concrete Crump weir with steel crest plate and 0.4m high concrete wing walls. Sometimes affected by downstream weed growth causing levels to back up at the weir. Site also prone to interference from third parties building stone dams affecting flows in summer. Theoretical weir rating supported by gaugings up to 65% of QMED.	Some gaps in record due to logger faults; some data marked suspect or deleted due to stone dams being built in channel or result of weedgrowth affecting levels; July 2007 peak possibly reduced due to bypass channel cut around weir in attempt to reduce upstream flood levels; several spurious peaks at start of record are not reflected at downstream gauge (26008) and have been excluded.	Catchment drains the southwest edge of the Yorkshire Wolds, elevation varies from 160mAOD down to around 36mAOD at the gauging station. Rainfall is relatively low at 700mm per year. Bedrock geology is primarily chalk with thin bands of sandstone and limestone close to the catchment outlet. Soils are well drained calcareous coarse and fine loamy soils over chalk rubble. The chalk in the catchment is a principal aquifer. Land use is primarily arable with a small amount of pasture and a small urban area at North Newbald village.	Natural regime; strong baseflow signal but peaks are usually result of flashy response to rainfall.
27001	Nidd at Hunsingore Weir	484.3	SE4280252991	442802.0	452991.0	53°58'16.4117"N 1°20'56.3340"W	53.97123	-1.34898	Nidd	Hunsingore Weir	18.1	EA-Y	F2104	27	1934-01-01		B	376.0		20.0	true	true	true	true	false	false	false	true	false	false	false	false	false	SRPE	1935-02-01	2023-09-30	7.805	0.22	1943-08-28	1943-08-28	235.0	2015-12-26	2015-12-26	1.54	2.68	4.17	17.8	25.5	0.48	32384	30988	95.689	1934-05-07		115.993	18.5	34.9	155.4	419.2	702.6	967	962	0.0856	0.1874	0.5009	0.1421	0.0662	0.0708	0.176	0.4631	0.2277	0.0554	0.1476	0.7999		0.0525	0.0304	0.0815	0.353	0.37	0.407	0.947	75.2	39.59	38.6	48.8	11.4	75.66	37.3	195	93	0.22	18.5	493.91	0.917	0.511	0.0854	0.0253	0.784	0.608	0.0319	0.852	0.634	1933..1984	1933-10-01..1966-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested masonry mill weir influenced by headwater reservoirs at low flows.	Broad-crested masonry mill weir (49.8m wide) placed diagonally across the river, with a cableway d/s at Cowthorpe. Station intended to be replaced by full-range ultrasonic gauge at Skip Bridge (27062) but remains open due to the value of the long record.	Insensitive weir due to width. Broad crest prone to collecting debris. Weir drowns in the mid-range, and is by-passed at the highest levels (beginning at 2.41m). Cableway 1km downstream at Cowthorpe, also by-passed and drowned in extreme flows. Multiple peak flow ratings apply across period of record, different lower limbs have been used for periods when opening of by-pass sluice gate affected flows. Hydraulic modelling gives more confidence to post October 1966 ratings, but caution is advised. Level measurement by shaft encoder and bubbler. Flood Studies Report grade A2.	Flows in pre-digital period cannot be reprocessed and therefore peak flows are marked as rejected. Operation of by-pass sluice in the 1980s caused difficulties; flows subsequently revised. No data for June 1984 - March 1985 due to site works. Flows from 1966 onwards have all been re-processed with revised ratings, earlier peaks (notably 1946, 1965) still rely on old ratings and likely to be overestimated. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Mostly moderately permeable. Upper Carboniferous Millstone Grit series down to Knaresborough, where Carboniferous Goredale rocks form an inlier. Magnesian Limestone lies on top of the Grits, dipping east, followed by general drift cover below Knaresborough. Just under half of the catchment is overlain by superficial deposits. Predominantly rural; half grassland with moorland headwaters and arable in lower valley which is flat and the river meandering. No known catchment changes.	Opening and closing of mill race sluices has occurred but was unlikely to have affected high flows. Regulatory effect of headwater reservoirs (Angram, Scar House and Gouthwaite) is evident at low flows. Gouthwaite controls 24% of the catchment and has a significant impact in low flow periods. Mill operation evident in the early record. Overall net export of water.
27002	Wharfe at Wetherby Flint Mill	758.9	SE4221547311	442215.0	447311.0	53°55'12.8154"N 1°21'31.3665"W	53.92023	-1.35871	Wharfe	Wetherby Flint Mill	13.7	EA-Y	F2004	27	1936-01-01		B VA	600.0	460.0	14.2	true	true	true	true	false	false	false	false	true	true	true	false	true	SRPI	1955-10-01	2023-09-30	17.205	0.425	1957-06-23	1957-06-23	297.0	2022-02-20	2022-02-20	2.48	5.51	9.07	41.06	58.9	0.39	24837	21109	84.99	1936-06-09		237.214	12.1	74.2	258.0	487.5	703.7	1171	1163	0.0853	0.0603	0.6178	0.1778	0.041	0.0699	0.0542	0.5215	0.3134	0.0317	0.0164	0.9836			0.0255	0.085	0.3462	0.43	0.386	0.927	111.4	42.75	40.7	53.4	11.1	107.5	59.47	273	136	0.13	12.1	759.05	0.808	0.772	0.0532	0.0103	0.646	0.544	0.0162	0.778	0.572			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested masonry mill weir in a rural catchment with some net export of water to the Aire Valley.	Broad-crested masonry mill weir (47m wide), rated by check gaugings. Tadcaster ultrasonic gauge (27089) installed 1990, intended to replace Flint Mill but station retained primarily for high flow measurement. Check gauged at cableway 1.5km u/s but this was moved to 27089 in 1990. Flow was originally recorded on a flow chart up to the level of weir by-passing (1.6m), and level thereafter. Mill sluice operation in 1990s and modification of weir in 2010 affect low flow measurements.	Cableway built 1954 0.75 miles upstream of weir. More accurate flow recorder installed in 1959. Station recalibrated 1965 due to insensitivity at low flows; control was deteriorating, but without known change in gauge zero. Weir control insensitive at low flows. Unlikely to drown at high flows, though small amount of bypassing on the right bank possible. Two peak flow ratings applied across period of record, Rating B originally derived by weir formula then checked by current meter with good fit to gaugings. Current rating from 2010, reflects reconstruction of weir crest to a higher level (raised by 0.08m) in summer 2010 but gauge zero not changed, difference is incorporated into rating offset. FSR rated excellent for high flows. Fish pass construction from late 2019 affects rating at low flows and another change will be required once sufficient data available for recalibration.	For early records, chart zero was often set 0.3m below the weir crest to allow for the weir crest drying up due to leakage. This practice stopped in the 1960s. Flow charts from 1936-1955 considered unreliable and have not been digitised. Flow charts from 1955 to 1965 are digitised but have not been reprocessed with revised rating. Records since 1965 have been reprocessed with revised rating and are considered reliable for high flows, pre-1965 data is less reliable. Rating reviewed in 2022 and data reprocessed from 2009. Gap in data in 2010 due to weir repairs carried out by the landowner. Closed to daily flows in 2010 due to ongoing issues. Peaks flows are unaffected and held post-2010. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Mixed geology of moderate permeability - mainly Carboniferous Limestone, grits and Coal Measures with just under half the catchment overlain by superficial deposits. Predominantly mixed rural catchment, two thirds of the catchment is grassland, with moorland headwaters. No known catchment changes.	Regulation effect of headwater reservoirs evident at low flows. Small net export of water to the Aire Valley (including Bradford supply).
27003	Aire at Beal	1932.1	SE5304025471	453040.0	425471.0	53°43'22.6447"N 1°11'51.5864"W	53.72296	-1.19766	Aire	Beal	5.5	EA-Y	F1806	27	1962-01-01		B VA	280.0	160.0	6.0	true	true	false	false	true	true	false	true	false	false	true	true	false	SPEI	1958-10-01	2023-09-30	37.596	3.455	1959-10-18	1959-10-18	324.0	2015-12-27	2015-12-27	9.66	16.8	24.1	80.8	111.0	0.54	23741	23566	99.263	1958-01-01		290.161	6.1	47.9	169.6	366.4	586.0	976	981	0.1229	0.0937	0.4487	0.092	0.2196	0.0739	0.1129	0.4337	0.1469	0.2218	0.0208	0.5433	0.0015	0.4344	0.0168	0.0798	0.2629	0.38	0.476	0.939	92.1	33.23	37.9	50.6	10.7	120.39	71.44	190	99	0.14	6.1	1935.97	1.111	0.746	0.0717	0.1032	0.771	0.745	0.1313	0.853	0.768			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combined record of Beal Weir (pre-1995) and velocity area station (post-1995). The heavily reservoired catchment drains a large part of the East Pennines.	Broad-crested masonry weir (33.5m wide) with an additional 9.1m of sluices on the right bank, acts as the control at this site. A long established station, 7 km upstream of the tidal limit of the Aire (Haddlesey Weir). The original gauge was on the weir, with a cableway 4.5km u/s (led to limited low flow accuracy); improved performance using new site for cableway and instruments (500m u/s of weir) from June 1993. Flow records combined.	Non-standard weir control rated by gaugings. Bypassing over the left bank begins at around 3.8m stage (at new station) and occurs on a roughly annual basis. At around QMED, flows inundate extensive N bank washlands. By-passing via the Aire and Calder navigation at Ferrybridge (measured at Whitley Lock); thus sum of upstream tributary flow volume at Lemonroyd (27080) and Methley (27079) is 5-12% greater than flow at Beal. Four peak flow ratings applied across period of record, two at old Beal and two at new Beal, latest revision was in 2016. Numerous problems resulting in Flood Studies Report grade Z in 1975, now graded A1, although the site still suffers regular overtopping into washlands on its left bank.	Neither the recorder nor cableway was able to measure the full range of flows until after the 1940s. Early peaks flattened by limited pen-range and original theoretical formula was not held to be accurate due to use of timber 'deals' and drowning of the weir at around 1m head. Flood peaks are still truncated due to spill into washlands limiting the peak level reached at the gauge. Q95 has decreased significantly in the recent past, which is thought to be due to increasing abstractions for canal. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Catchment drains a large tract of the East side of the Pennines, including the catchments of the rivers Colne, Calder and Aire. The geology is mixed with Carboniferous Limestone in the upper Aire, Millstone Grit and Coal Measures in the Calder and mid-Aire, Magnesian Limestone, Marl and Triassic Sandstone in the lower catchment. Some superficial deposits. Mixed land use, with extensive around a fifth of the catchment is urbanised areas. The headwaters are predominantly rural moorland and are used for rough grazing. Areas of heavy urbanisation and significant industry in the mid catchment which includes the Leeds-Bradford conurbation. Agriculture, including significant arable, continues in the lower reaches. 11.6% of the total catchment drains through around 50 reservoirs, the larger of which include Butterley (Colne), Ryburn, Boothwood (Calder), Winterburn, Ponden and Hewenden (Aire). Considerable increases in urban development and industry during the period of record. Ongoing decline of the coal mining industry around Knottingley and Pontefract.	Heavily reservoired including the following groups - Aire (controlling 4.6% of total area), Calder (4.6%), Colne (2.1%). A complex water utilisation network exists, with net imports from the rivers Nidd, Wharfe, Ure and Derwent returned to the Aire upstream of the gauge vie sewage treatment works discharges. Large abstraction made to the Goole and Knottingley Canal upstream of the station. Heavily industrialised with abstractions made to Ferrybridge power station.
27004	Calder at Newlands	899.0	SE36502233	436500.0	422330.0	53°41'46.1117"N 1°26'55.2411"W	53.69614	-1.44868	Calder	Newlands	13.9	EA-Y	F1304	27	1960-01-01	1976-12-31	VA				true	true	false	false	true	false	false	false	false	false	false	false	false	SPEI	1960-10-01	1976-04-30	17.817	2.711	1975-07-06	1975-07-06	273.8	1960-11-26	1960-11-26	4.791	8.382	11.55	36.53	50.69	0.53	5691	4473	78.598	1956-01-01	1977-11-01	210.214	16.5	61.6	197.9	389.3	580.3	1046	1043	0.148	0.0915	0.4108	0.1379	0.1827	0.083	0.1215	0.3949	0.197	0.1915		0.5062		0.4938	0.0064	0.1393	0.0492	0.4	0.527	0.924	108.5	29.97	39.9	53.9	10.9	75.81	44.3	214	88	0.16	18.3	905.89	0.851	0.672	0.0489	0.0855	0.733	0.718	0.1046	0.815	0.749			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Replaced Kirkthorpe Weir in 1968. Station closed in 1977 and replaced by 27079 (Methley) in 1988.	Velocity area station, an adjacent thin-plate weir measured diversions to canal, built in 1956 and levels recorded from 1957. Newlands is situated in an open channel 26m wide, without formal control, at Newland Hall railway-bridge, 4.8km d/s of Wakefield and 1.5km d/s of Kirkthorpe Weir. In October 1968, Newlands replaced the original station at Kirkthorpe Weir (built 1827) to maintain levels in the Aire and Calder Navigation (records from 1960 with some earlier data back to 1927). Newlands closed in 1977 and replaced by 27079 (Methley, flows from 1988), although current meter gauging using the cableway was continued at Newlands.	Multiple peak flow ratings applied across period of record, the most recent is valid from October 1969 when pressure transducer installed. Rated by multipoint current metering using cableway prior to 1969.		Mixed permeability geology of Carboniferous Sediments; Millstone Grit in the upper catchment, dipping east under Lower and Middle Coal Measures and overlain by alluvium and sand. It is not tidally influenced. Upland headwaters. Rural land use predominates with moorland in headwaters. Newlands is located near the downstream limit of a highly industrialised catchment. There are numerous large population centres within the catchment including Huddersfield, Halifax and Wakefield. From 1957, abstraction and discharge for cooling at Wakefield generating station. Continued intensive coal mining including underneath river has resulted in subsidence. Continued erosion of upstream riverbanks has prompted remediation by stoning by Navigation authorities. There have also been significant changes to channel morphology, with banks being raised or lowered.	The catchment is heavily reservoired, with 5.9% draining through an impoundment. Water abstractions returned to river as sewage effluent u/s of gauge. Import of water from Dewsbury and Heckmondwike and from Wharfe and Nidd. Continued abstraction to Navigation canal which was temporarily gauged at Birchwood Lock, 3km downstream of the intake.
27005	Nidd at Gouthwaite Reservoir	113.7	SE1411768296	414117.0	468296.0	54°06'37.2672"N 1°47'08.0348"W	54.11035	-1.78557	Nidd	Gouthwaite Reservoir	122.5	EA-Y	F2108	27	1937-01-01		TP			17.0	true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1936-10-01	2023-09-30	2.702	0.068	2010-09-24	2010-09-24	145.0	1946-09-20	1946-09-20	0.485	0.927	1.22	7.11	9.0	0.47	31776	28827	90.719				130.2	229.5	393.9	524.9	702.6	1355	1350	0.0362	0.0032	0.5226	0.4002	0.0035	0.0285	0.0017	0.2866	0.6631	0.0009		1.0				0.2416	0.1384	0.62	0.325	0.846	128.2	50.45	45.1	59.1	11.5	23.18	11.5	386	97	0.26	130.2	115.42	0.308	0.834	0.0188	0.0002			0.0002					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested weir with rectangular notch measuring overflow and compensation flow from Gouthwaite Reservoir.	Rectangular notch 12.2m wide set in broad-crested weir (total width 29m).				Measures overflow and compensation/regulation releases from Gouthwaite Reservoir.
27006	Don at Sheffield Hadfields	373.0	SK3893190954	438931.0	390954.0	53°24'50.2715"N 1°24'56.7296"W	53.41396	-1.41576	Don	Sheffield Hadfields	30.2	EA-Y	F0605	27	1965-01-01		B VA	350.0	350.0	24.0	true	true	true	true	false	false	false	true	false	true	false	false	false	SPGEI	1965-10-01	2023-09-30	5.096	0.365	1976-09-03	1976-09-03	185.0	2007-06-25	2007-06-25	1.19	1.97	2.77	10.8	16.42	0.49	21184	21184	100.0	1956-11-21		87.105	32.3	113.3	260.0	412.0	543.4	1010	1014	0.1566	0.0617	0.3564	0.1883	0.2023	0.128	0.0574	0.3666	0.2435	0.1886		0.4338		0.5662		0.1202	0.0192	0.37	0.416	0.884	106.5	38.36	40.7	54.2	10.6	51.2	23.52	262	73	0.28	32.3	364.88	0.364	0.745	0.0298	0.1072	0.793	0.452	0.1331	0.903	0.469			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested, skewed, semi-circular masonry weir with long record. Heavily reservoired catchment draining the East Pennines.	Broad-crested, skewed, semi-circular masonry weir (44.5m wide) with sloping upstream face. Upstream level recorder since 1921 originally poor due to limited range and position at foundry intake, now located on inside bend in river, upstream of the weir. Cableway installed 1961 located 100m d/s destroyed in 1989, new cableway installed u/s in November 1997. Hut and contents stolen, 1985, replaced 1986. Fish pass installed November 2012.	Rarely bypassed or drowned. Current meter gauging previously from footbridge, downstream of weir. Rated by a current meter from a cableway. Revised rating applied in December 2014 back to November 2012 following fish pass construction. This rating alters the lower limb (below 0.52m stage) to compensate for the fish pass. Four peak flow ratings applied across period of record. Good fit to gaugings. In 1975 Flood Studies Report grade A2 to 2m and B above (overall grade A2). Current grade A1 to 2m and A2 above.	Data is available from 21/11/1956. Flows from 1982 reprocessed in 2002 and 2014. Bypassed in June 2007 event. June 2007 peak flow is estimated 259 cumecs and stage 4.68m (wrack survey). Flows reprocessed from 2/11/2012 in 2015 after new rating developed for fish pass resulting in a slightly lower flow estimate. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Catchment draining the eastern flank of the Pennines, to Sheffield. Mixed geology including Upper Carboniferous Millstone Grit, Middle and Lower Coal Measures sandstones and shales with a generally easterly dip. Moorland headwaters used for rough grazing contrast with the heavily urbanised (up to a fifth of the catchment) lower catchment (now less industrial); mixed rural in mid-catchment. Ongoing increase in area of development during period of record.	Fast responding catchment with a large urban component near to the outlet. Heavily reservoired with estimated 40% of catchment draining through around 23 reservoirs. Variation in Don Valley reservoir content has very significant effect on overall percentage runoff from the catchment in flood. Addition of water from borehole to Scout Dyke reservoir group, intermittent discharge from South Yorkshire Navigation and sewage treatment effluent discharge. Compensation forms a large part of baseflow. Significant net loss of water from the catchment with abstraction to Yorkshire Grid.
27007	Ure at Westwick	914.6	SE3559967047	435599.0	467047.0	54°05'53.1383"N 1°27'25.7090"W	54.09809	-1.45714	Ure	Westwick	14.2	EA-Y	F2202	27	1958-01-01		B VA	250.0		10.6	true	true	true	true	false	false	false	true	true	true	true	false	true	SP	1958-10-01	2023-09-30	22.214	0.947	1976-09-07	1976-09-07	490.0	2015-12-06	2015-12-06	2.97	6.65	11.3	53.3	77.2	0.38	23741	23092	97.266	1955-10-04		278.172	15.0	52.8	263.8	511.0	714.3	1121	1120	0.0778	0.1401	0.5595	0.1861	0.0233	0.0693	0.131	0.4566	0.3261	0.0138	0.1528	0.8359		0.0113	0.0547	0.1029	0.4757	0.41	0.42	0.981	98.7	43.66	41.8	53.8	11.2	102.47	52.98	273	84	0.2	15.0	912.58	1.075	0.694	0.0674	0.0039			0.0078	0.692	0.541	1955..1969	1955-10-01..1970-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with broad-crested masonry weir.	Velocity area station with broad-crested masonry weir (59m wide) rated by gauging at cableway 0.26km d/s. This replaced an earlier rated section d/s of the weir near the canal lock, Boroughbridge weir was thought to act as partial control fore the old station. Location was moved u/s of the (existing) weir in November 1975, initially on the right bank, then moved to current location on left bank in 2010. The weir is now in poor repair. Hydropower scheme installed November 2011 and includes a bypass channel, gauged separately.	Some out-of-bank flooding at very high flows - peaks may be underestimated. Pre- 2009, the cableway was inaccessible at very high flows, accessibility improved when moved to the left bank; however, there is still some minor bypassing behind the right bank stantion in very high flood events. Three peak flow ratings have been applied for different periods, daily mean flow ratings are not always the same as for peak flows. Peak rating periods are: d/s gauge 1955-Aug1970 and Aug1970-Nov1975, the gauge u/s of weir (Nov1975-present). The latter was supplemented in 1998 by Hydraulics Research analysis, with a more accurate relationship for stages above 2m. Hydropower bypass channel affects low flow measurement and is gauged separately to the main channel (Acoustic Doppler gauge with velocity-index rating), flows from the main and bypass channel are added together to give a total flow. Gaugings at cableway measure total flow and therefore may not fit well to rating when Hydropower scheme is operating, they should be compared with total flow series.	Flows prior to November 1975 have lower confidence due to various changes in rating and changes to condition of Boroughbridge weir (control for early records. Flows are rejected pre-1970 because the earliest rating and data cannot be confirmed. Increased confidence to post November 1975 data after recorder moved to upstream of weir, however still some uncertainty in highest flows due to by-passing of the cableway. This improved after the cableway was moved to the left bank in 2009/10. From November 2011 onwards flows are derived from the rating curve plus addition of measured flow in the hydropower intake channel. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Mixed geology of limestone and grits, with significant Boulder Clay cover. The Millstone is hilly, but further downstream the Limestone and Marl form a flat plain. Upstream of Kilgram Bridge the rocks are mainly Carboniferous Limestone and the catchment is steep. Predominantly mixed agriculture catchment draining from moorland headwaters in the Pennines. No known catchment changes.	Reservoirs have a significant effect on the Burn and Laver, but have a moderate overall impact; some net export of water. 'Grip' drainage also influential.
27009	Ouse at Skelton	3315.0	SE5684555373	456845.0	455373.0	53°59'28.6143"N 1°08'04.1257"W	53.99128	-1.13448	Ouse	Skelton	4.6	EA-Y	F2405	27	1969-01-01		US	240.0		3.2	true	true	true	true	false	true	false	true	true	true	true	true	true	SRPGI	1969-09-18	2023-09-30	52.482	3.69	1995-08-23	1995-08-23	608.0	1982-01-05	1982-01-05	7.81	17.1	29.7	129.0	181.0	0.45	19736	19537	98.992	1886-09-26		322.0	5.6	22.6	118.0	457.5	714.3	918	899	0.0702	0.3134	0.4392	0.1237	0.0386	0.0593	0.3078	0.4001	0.2037	0.0254	0.3361	0.5626	0.0584	0.0429	0.0963	0.1655	0.4854	0.37	0.439	0.983	69.1	39.94	36.5	46.5	11.0	152.06	76.4	185	100	0.13	5.6	3300.8	1.402	0.663	0.1357	0.0103	0.621	0.752	0.0148	0.765	0.776	1885		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Multi-path ultrasonic station since 1992. Previously velocity-area station. Catchment drains northern parts of the Vale of York and the Yorkshire Dales.	Multi-path (cross-configuration) ultrasonic station from 1992. It was previously a velocity-area station since 1956 (37m wide at low flows), with control exercised mainly by Naburn weir, 13km d/s. A key station for regulation of public water supply abstractions and flood risk management. It is a difficult site for flood estimation due to lack of similar catchments yet is not entirely suitable for single-site analysis.	Velocity area station until 1992 with control influenced by the downstream channel and by Naburn weir, replaced by ultrasonic gauge from 1992. Banks raised when US gauge built, some minor bypassing in high flows prior to that, now all flow contained through the gauge section. Daily flow rating affected by sluice gate settings at Naburn, previous attempts to apply different ratings to account for this were unreliable, recent review (2023) reverted to single best fit rating curve for low flows, significant scatter in check gaugings show inherent variability in pre-ultrasonic flow data. Three high flow ratings applied to pre-ultrasonic period, based on hydraulic model analysis and check gaugings, and influenced by construction of flood defences downstream in York. Ultrasonic data since 1992, with back up rating to infill where required, considered good throughout the range, although AMAX1 event (Nov 2000) had some unmeasured flow with estimated peak around 5% higher than measured.	Pre-1992 records less reliable due to variability in stage-discharge relationship. Records reprocessed from 1969 following rating review, peak flows increased pre-1982 and reduced 1982-1992 as a result, daily flows also amended for this period. Nov 2000 peak under-estimated by gauge, peak flow has been corrected. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Mixed geology, mostly of moderate permeability but highly permeable in lower reaches; extensive superficial deposits mask solid geology in much of catchment, particularly Vale of York. Large areas of Carboniferous Limestone and Millstone Grit in the west, Permian Magnesian Limestone in the central area and Keuper Marl and Triassic Sandstone to the east. Along the eastern border are rocks of the Lias and Great and Inferior Oolite Series. Predominantly rural catchment draining north parts of Vale of York and Yorkshire Dales, with some moorland headwaters. No known catchment changes.	Large catchment with significant floodplains leads to long, slow flood response lasting several days. Reservoirs influence flows in the Ure and Nidd tributaries, public water supply abstraction u/s at Niddmouth also a significant impact on low flows. Hydropower scheme at Linton Weir leads to short-term fluctuations in low flows but not significant at daily timestep.
27010	Hodge Beck at Bransdale Weir	18.9	SE627944	462700.0	494400.0	54°20'28.7086"N 1°02'13.5008"W	54.34131	-1.03708	Hodge Beck	Bransdale Weir	155.7	EA-Y		27	1936-01-01	1979-12-31	TP B		9.7		true	true	true	true	false	false	false	false	false	false	false	false	false	N	1936-04-11	1979-01-31	0.345	0.005	1944-09-12	1944-09-12	9.798	1960-10-09	1960-10-09	0.059	0.125	0.197	0.723	1.093	0.49	15636	15025	96.092	1936-06-01	1978-01-01	9.42	158.1	218.4	328.7	416.7	451.5	1038	987	0.1651	0.0209	0.2894	0.482	0.017	0.1454	0.0198	0.3278	0.507			0.5537	0.4463			0.2825		0.4	0.341	1.0	149.8	50.58	36.0	47.4	10.4	10.13	5.2	323	161	0.22	158.1	18.82	0.131	1.044	0.0094	0.0026			0.0007			1935..1977		gdf;gmf;cmr;cdr;cdr-d;pot-flow;gauging-stage;gauging-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound thin plate and broad crested weir, theoretical rating, in responsive upland catchment in the North York Moors. Station closed December 1979.	Three-stage thin-plate rectangular weir (6.1m wide overall) with short broad-crested flanks (4.55m wide) and concrete overall. Built for water resources purposes for proposed reservoir (never built). Station closed 31/12/1979, replaced by 27054 Cherrytree Farm from 30/12/1976.	Three-stage rectangular thin plate weir with broad crested flanks in incised valley, no bypassing and believed to remain modular (but no downstream recorder to confirm this). Site affected by sand and gravel accumulation upstream of low flow crest, this was periodically removed and mainly impacted on low flow measurement. Intake pipe to stilling well also suffered from blockage at times. Theoretical rating, calibrated flow chart by Lea Recorder Co up to 195 MGD (10.26m3/s) and water level recorded above this to 1.98m, maximum chart level only exceeded once (23/06/1946) and estimate of peak flow (590MGD) was noted on chart. Latterly a PTR was installed (thought to be from May 1972) with a rating table (rating B) based on the original Lea calibration developed by the Water Resources Board. Peak flows extracted by Flood Studies team, all appear to be taken directly from original chart flows and converted to m3/s. Few current meter gaugings mainly at low flows, suggest gauge over-estimates at very low flow but closer agreement above around 1.5m3/s. FSR grade A2.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Small, upland catchment in Yorkshire moors, with steep slopes rising to flat moor tops above. Geology consists of bed of the Lias and lower Oolite dipping south, and the whole succession exposed down the sides of the valley. Mostly shales and sandstone. Moorland and upland grass, some woodland. No known catchment changes.	Responsive catchment, no known artificial influences.
27011	Washburn at Lindley Wood Reservoir	87.3	SE2195748831	421957.0	448831.0	53°56'06.4964"N 1°40'01.3726"W	53.93514	-1.66705	Washburn	Lindley Wood Reservoir	93.0	EA-Y		27	1953-01-01	1976-01-31	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1953-10-01	1976-01-31	0.581	0.011	1955-10-08	1955-10-08	24.64	1958-02-11	1958-02-11	0.153	0.21	0.21	0.966	2.566	0.39	8158	8158	100.0				79.7	159.4	243.4	366.3	460.2	1022	1031	0.1275	0.016	0.5214	0.2802	0.0203	0.1026	0.0084	0.4672	0.3881	0.0093		1.0				0.0301	0.2169	0.44	0.34	0.762	86.5	44.4	38.8	49.8	11.2	23.14	12.26	253	101	0.24	92.5	87.49	0.246	0.898	0.0227	0.0008			0.0012					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combined orifice and broad-crested weir station measuring releases and overflows from Lindley Wood Reservoir.	Orifice for measuring compensation flows plus a broad-crested weir for the measurement of overflows from Lindley Wood Reservoir. Records ceased 1975. Level recorder installed on the spillway weir in 2004 to measure overflows, but in 2007 was still awaiting calibration.				Influenced by overflows and releases from Lindley Wood Reservoir.
27012	Hebden Water at High Greenwood	36.0	SD973309	397300.0	430900.0	53°46'27.9463"N 2°02'32.8131"W	53.77443	-2.04245	Hebden Water	High Greenwood	190.5	EA-Y		27	1954-01-01	1973-11-30	TP				true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1954-10-01	1973-11-30	0.698	0.068	1970-01-02	1970-01-02	12.63	1960-11-26	1960-11-26	0.229	0.255	0.311	1.699	2.602	0.44	7001	7001	100.0				191.7	300.0	379.2	446.2	503.4	1396	1377	0.0192	0.0028	0.296	0.6186	0.0003	0.0193	0.0005	0.1593	0.7885	0.0003		1.0				0.6395	0.0019	0.57	0.265	0.837	111.3	56.41	43.2	60.0	11.4	9.77	5.39	375	149	0.2	191.7	35.92	0.167	1.005	0.0135	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound rectangular thin-plate weir operated by Yorkshire Water, NRFA records ceased November 1973.	Compound rectangular thin-plate weir 13.7m broad - a statutory compensation gauge. Still operated by Yorkshire Water but NRFA records ceased November 1973.
27013	Ewden Beck at More Hall Reservoir	26.4	SK289957	428900.0	395700.0	53°27'26.1542"N 1°33'58.4376"W	53.45727	-1.56623	Ewden Beck	More Hall Reservoir	123.0	EA-Y		27	1954-01-01	1980-12-31	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1954-10-01	1980-12-31	0.294	0.0	1975-12-26	1975-12-26	13.17	1965-12-05	1965-12-05	0.054	0.147	0.164	0.644	1.169	0.38	9589	9500	99.072				124.8	198.2	343.4	490.9	543.4	1163	1138	0.1977	0.0232	0.2803	0.4537	0.0042	0.1642	0.0194	0.2612	0.5237	0.0034		0.9858		0.0142		0.3625		0.38	0.384	0.793	129.0	44.32	43.4	57.0	10.6	12.84	6.53	347	66	0.41	124.8	26.27	0.131	1.13	0.0117	0.0009			0.0003					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound structure measuring compensation flows from More Hall Reservoir.	Compound structure consisting of sharp-edge weir between broad-crested flanks. Primarily designed to measure compensation flows from More Hall Reservoir.				Regime influenced by More Hall Reservoir.
27014	Rye at Little Habton	679.0	SE743771	474300.0	477100.0	54°11'03.4952"N 0°51'46.7244"W	54.1843	-0.86298	Rye	Little Habton	18.8	EA-Y		27	1958-01-01	1971-12-31	VA				true	true	false	true	false	false	false	false	false	false	false	false	false	N	1958-10-01	1971-08-31	9.257	0.967	1970-09-30	1970-09-30	140.5	1960-10-10	1960-10-10	1.696	4.389	6.456	18.8	26.28	0.62	4718	4687	99.343	1958-02-21	1971-12-31	84.718	20.7	37.3	174.3	334.7	453.2	849	824	0.1613	0.2768	0.295	0.2278	0.0234	0.1556	0.2715	0.3325	0.2353	0.0048		0.6178	0.3822		0.0032	0.1886	0.0312	0.35	0.547	0.996	98.1	31.5	32.4	43.0	10.4	57.87	27.49	181	152	0.23	20.7	680.89	0.867	0.463	0.0924	0.0034			0.0045			1957..1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a rural catchment with no know artificial influences. Station closed 1970, POT data available to 1974.	Velocity area station in Vale of Pickering, 12m wide channel with raised embankments. Discontinued 1970 (POT available until 1974), eventually replaced by new station at Ness 6km upstream.	Open channel section, affected by weedgrowth in summer and some siltation also noted; very low velocities at low flows resulting in scatter in current meter gaugings; no by-passing; rating derived by current meter gauging, several ratings applied over period of record, most recent valid from 1969; channel regraded in 1965, no other known changes.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Mixed geology, mostly moderate permeability with low permeability outcrops, some superficial deposits. Alluvium at the lower end in the Vale of Pickering, and Lacustrine Clay overlaying Jurassic rocks in the north and west of the catchment. In the centre the geology is Corallian beds, with smaller areas of Oxford and Kimmeridge clay. Rural, with moorland headwaters in north, arable in lower areas to south. Catchment includes the Seven and Hodge Beck which drain the Yorkshire moors. No known catchment changes.	Minor influence from groundwater/spring abstractions and STW discharges.
27015	Derwent at Stamford Bridge	1634.3	SE7116255628	471162.0	455628.0	53°59'30.4910"N 0°54'57.9356"W	53.9918	-0.91609	Derwent	Stamford Bridge	5.1	EA-Y	F2806	27	1961-01-01	1975-12-31	VA	86.0			true	true	false	false	true	false	false	false	false	false	false	false	false	P	1961-10-01	1975-08-31	16.457	3.341	1964-12-04	1964-12-26	122.0	1966-02-22	1966-02-22	5.399	8.863	11.85	31.83	44.18	0.69	5083	4902	96.439	1932-04-09	1975-01-01	85.708	8.5	25.1	99.8	269.5	453.2	782	763	0.1528	0.4184	0.2677	0.1178	0.032	0.1535	0.4442	0.2707	0.1188	0.0119	0.0289	0.5019	0.4349	0.0343	0.0091	0.252	0.084	0.34	0.604	0.994	76.1	28.44	32.2	42.2	10.6	104.56	58.8	126	163	0.14	8.5	1639.27	1.106	0.835	0.1408	0.0071	0.541	0.874	0.008	0.721	0.861			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the lowest station on the Yorkshire Derwent. Superseded by 27041 and closed in 1975.	Broad-crested non-standard weir 31m wide with mill channel and separate navigation channel. Original recorder upstream of the weir, supplemented and eventually replaced by velocity area station downstream of the weir. Flood flows from the upper catchment are diverted to Scarborough via the Sea Cut (27033). The lowest gauging station on the Yorkshire Derwent, operating since 1932. Superseded in 1973 by 27041 (Buttercrambe) d/s. Station closed 31-12-1975. Levels only are now recorded at Stamford Bridge.	Discharges which bypass the weir via a flood sluice were taken into account in early records but rating relationship was very variable; chart recorder installed at cableway site downstream of the weir in 1962 and improved stage-discharge rating. The weir crest was lowered in 1958 and again in 1970. The flood plain occasionally overflows behind the station and the weir has drowned on rare occasions. Multiple peak flow ratings applied across period of record, the most recent is valid from July 1969. Flood Studies Report grade before 1958, Z; 1958-1962, B; after 1962, A2; overall A2.		Large catchment with mixed geology. Predominantly rural, mixed agriculture with moorland in headwaters. Downstream of Malton the Lias and Oolite series dipping northeast are cut through and underneath there, and down to Stamford Bridge, are Rhaetic and Trias Marls and sand. All Cretaceous, Jurassic and Triassic strata are represented in the catchment. The Vale of Pickering is alluvial. No known catchment changes.	Flood flows from 88.8 sq.km of the headwaters (eastern North Yorkshire Moors) are diverted from the Derwent via the Sea Cut; these flows are measured by station 27033 at Scarborough. Instantaneous peak flows are not corrected for flow diverted down the Sea Cut because of the difficulty of establishing a time correlation; diverted catchment area is 5% of Stamford Bridge catchment. No significant reservoirs.
27016	Little Don at Underbank Reservoir	38.6	SK253992	425300.0	399200.0	53°29'20.0700"N 1°37'12.6003"W	53.48891	-1.62017	Little Don	Underbank Reservoir	166.0	EA-Y		27	1956-01-01	1980-12-31	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1956-10-01	1980-12-31	0.642	0.003	1970-03-15	1970-03-15	23.28	1965-12-09	1965-12-09	0.142	0.226	0.233	1.653	2.655	0.4	8858	8555	96.579				168.1	232.5	327.3	478.9	540.0	1226	1211	0.1428	0.0351	0.28	0.4717	0.0123	0.1076	0.053	0.2505	0.5519	0.0053		0.7442		0.2558		0.2812		0.37	0.37	0.774	119.2	45.18	45.6	58.3	10.8	14.68	7.31	342	42	0.36	168.9	36.18	0.131	0.752	0.0105	0.0044			0.0029					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Orifice and weir station downstream from Underbank Reservoir. Records ceased in December 1980.	Orifice and weir (11.7m wide) downstream from Underbank Reservoir. Records ceased December 1980.
27017	Loxley at Damflask Reservoir	43.5	SK2868790594	428687.0	390594.0	53°24'40.9775"N 1°34'11.6532"W	53.41138	-1.5699	Loxley	Damflask Reservoir	124.0	EA-Y		27	1956-01-01	1980-12-31	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1956-10-01	1980-12-31	0.563	0.0	1959-03-29	1971-12-25	18.15	1965-12-09	1965-12-09	0.116	0.362	0.417	0.926	1.512	0.39	8858	8740	98.668				125.8	210.5	331.4	448.8	531.1	1132	1131	0.1428	0.0216	0.4756	0.311	0.0089	0.1622	0.026	0.3852	0.3959	0.0025		0.7669		0.2331		0.2202		0.38	0.382	0.787	128.8	45.05	42.1	58.2	10.3	11.62	6.45	328	108	0.31	126.5	43.6	0.083	1.064	0.0078	0.0008			0.0014					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Orifices and a weir measure compensation and overflows from Damflask Reservoir. Records ceased December 1980.	Orifices (measuring compensation flows) plus a weir, approx. 23m broad, (measuring overflows) below Damflask Reservoir. Records ceased December 1980.				Regime influenced by Damflask Reservoir.
27018	Ryburn at Ryburn Reservoir	10.7	SE0242418737	402424.0	418737.0	53°39'54.3964"N 1°57'53.2475"W	53.66511	-1.96479	Ryburn	Ryburn Reservoir	163.0	EA-Y		27	1956-01-01	1974-02-28	TP				true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1956-10-01	1974-02-28	0.159	0.0	1965-10-22	1973-12-07	5.578	1966-02-06	1966-02-06	0.0	0.051	0.068	0.351	0.62	0.33	6360	6360	100.0				186.2	251.0	341.7	415.2	472.9	1312	1365	0.042	0.0058	0.4057	0.4964	0.0137	0.0216	0.0209	0.3188	0.6091	0.0011		1.0				0.52		0.57	0.303	0.888	115.3	52.15	48.8	65.2	11.9	7.79	3.37	336	80	0.37	194.5	12.67	0.118	1.325	0.0112	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound rectangular thin-plate weir below Ryburn Reservoir in Ripponden. Discontinued February 1974.	Compound rectangular thin-plate weir below Ryburn Reservoir. Discontinued February 1974.				Regime influenced by Ryburn Reservoir.
27019	Booth Dean Clough at Booth Wood Mill	15.9	SE033166	403300.0	416600.0	53°38'45.2320"N 1°57'05.5998"W	53.6459	-1.95156	Booth Dean Clough	Booth Wood Mill	207.0	EA-Y		27	1956-01-01	1974-02-28	CC				true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1956-10-01	1974-02-28	0.225	0.0	1967-09-19	1967-11-09	5.975	1960-11-26	1960-11-26	0.048	0.123	0.14	0.436	0.733	0.32	6360	6118	96.195				208.3	300.3	368.4	431.2	482.4	1406	1403	0.0156	0.0008	0.3536	0.5553	0.0063	0.0052	0.0062	0.2272	0.7145	0.019		1.0				0.697		0.57	0.267	0.837	121.2	56.14	48.9	66.4	12.0	7.73	4.21	366	36	0.25	209.7	15.69	0.227	1.09	0.0201	0.0006			0.0006					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir downstream from Booth Wood Reservoir. Station closed February 1974.	Compound Crump weir replaced a compound rectangular timber weir with thin-plate crest (3.05m wide). Discontinued February 1974.				Regime influenced by Booth Wood Reservoir.
27020	Scout Dike Stream at Scout Dike Resevoir	15.2	SE236047	423600.0	404700.0	53°32'18.3196"N 1°38'43.3502"W	53.53842	-1.64538	Scout Dike Stream	Scout Dike Resevoir	207.0	EA-Y		27	1956-01-01	1980-09-30	VN				true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1956-10-01	1980-12-31	0.11	0.0	1956-10-07	1979-06-17	4.644	1965-12-09	1965-12-09	0.0	0.051	0.054	0.21	0.489	0.12	8858	8708	98.307				209.3	240.0	297.3	343.0	384.6	1022	1046	0.095	0.1611	0.6097		0.0366	0.0244	0.0872	0.7976	0.0113	0.0262				1.0				0.34	0.65	0.712	62.6	18.94	41.4	56.1	10.7	7.53	3.8	294	75	0.5	209.3	10.91	0.121	0.944	0.0169	0.0101	0.402	0.609	0.01	0.632	0.626			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Thin-plate weir downstream from Scout Dike Reservoir. Records ceased December 1980.	Thin-plate weir (12m broad) measuring part of reservoir overflow and a V-notch measuring compensation flows and the balance of overflow from Scout Dike Reservoir. Records ceased December 1980.				Regime influenced by Scout Dike Reservoir.
27021	Don at Doncaster	1256.2	SE5697703973	456977.0	403973.0	53°31'45.6090"N 1°08'30.9566"W	53.52934	-1.14193	Don	Doncaster	4.4	EA-Y	F0908	27	1959-01-01		USVA	347.0		4.4	true	true	true	true	false	true	false	true	true	false	true	true	false	SPEI	1959-07-01	2023-09-30	16.51	2.619	1959-09-27	1959-09-27	357.0	2019-11-08	2019-11-08	4.951	7.52	10.2	33.8	50.2	0.56	23468	22698	96.719	1959-04-13		162.1	5.3	47.6	124.2	314.1	543.4	800	800	0.146	0.2343	0.2902	0.0565	0.2552	0.1051	0.2845	0.3031	0.0852	0.2136	0.0226	0.1298		0.8475	0.001	0.0367	0.0607	0.34	0.492	0.922	76.7	29.91	35.9	47.2	10.5	83.17	46.73	154	77	0.2	8.8	1252.87	0.618	0.799	0.0571	0.1179	0.754	0.847	0.1345	0.878	0.875			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic/Velocity Area station in the centre of Doncaster. Heavily urbanised catchment and numerous artificial influences on the flow regime.	Full range ultrasonic since 2000 in the centre of Doncaster. Previously a velocity-area station, 24m wide, formerly with cableway in a straight, embanked open channel reach from 1958. The ultrasonics are in an open channel control with significant hysteresis. New road bridge completed January 2001. Stage Discharge rating still preferred for peak flows.	By-passing via the Sheffield and South Yorkshire Navigation, 1km u/s and is measured at Long Sandall Lock. Significant scatter in gaugings above 1m stage. Recalibrated in late 1970s following removal of rubble weir (low flow control) due to measurement problems. Gauge zero was raised 1m in April 1978. Daily mean flow rating reviewed in 2014: Rating D implemented 11/01/1978-31/12/2000, Rating E implemented 01/01/2001 to present. Rated by check gauging (by cableway 1977 to 2000). Extrapolated above 5.49m. Full range Ultrasonic available since December 2000. Flood Studies Report (1975) grade A1 to 2.3m, B above this.	Intermittent records exist for as early as 1868 (see FSR), but they are not considered reliable, or representative of the modern catchment. Channel improvements, carried out in 1957, lowered water levels in the lower Don. Missing data 1976-1977 due to rubble weir removal. Post-1977 flows reprocessed in 2014. November 2000 flood peak is believed to be underestimated. June 2007 flood peak gauged at c.350 cumecs by ADVP. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	The catchment drains the east flank of the Pennines above Chesterfield, Sheffield and Barnsley. Mixed geology: Millstone Grit (headwaters), Coal Measures, Magnesian Limestone and Triassic Sandstones. Moorland headwaters, mixed agriculture in valleys along with significant industrialisation and urbanisation, including Sheffield, Rotherham and Doncaster. The eastern part of the catchment is low-lying, and was historically marshland, being drained in the 17th and 18th centuries by Dutch engineers. Historic tree-clearing, particularly in the Rother and Dearne valleys. Old mining areas are commonly subject to subsequent land-subsidence which poses a problem for the extensive raised flood banks. Once agricultural, Doncaster and Askern are now largely urbanised. Recent landscaping of Rother Country Park included significant tree planting. River regulators have been introduced over a period of time from 1958 to 1988.	River regulators and sluices on the Rother and Dearne tributaries control the operation of washlands in large floods. The heavily reservoired Don headwaters and Chesterfield and Clowne areas provide for a net import for supply via supply from the Derwent Valley and groundwater abstractions.
27022	Don at Rotherham Forge Island	826.0	SK4268292768	442682.0	392768.0	53°25'47.9251"N 1°21'32.7024"W	53.42998	-1.35908	Don	Rotherham Forge Island	23.2	EA-Y	F0600	27	1960-01-01		B VA				true	true	true	true	false	false	false	false	false	false	false	false	false	SPEI	1960-10-01	2023-09-30	12.866	1.982	1964-10-19	1964-10-19	394.0	2007-06-25	2007-06-25	3.87	5.833	7.693	26.2	37.95	0.53	23010	10492	45.598	1958-01-01		150.591	24.0	68.1	153.7	350.5	543.4	860	864	0.1399	0.1839	0.3118	0.0856	0.2582	0.1102	0.2259	0.314	0.1233	0.217	0.01	0.1973		0.7927	0.0008	0.0553	0.0381	0.38	0.464	0.915	85.2	32.36	37.2	48.3	10.6	57.2	28.48	186	75	0.21	24.0	824.43	0.491	0.806	0.0454	0.1197	0.773	0.692	0.1405	0.885	0.732			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A large masonry weir at an angle to the u/s channel. Heavily influenced by headwater reservoirs. Station closed in December 1971. Reopened in 2005, initially as a level only station but subsequently re-rated and flows calculated again from 8/11/2005.	A large masonry weir 61m wide calibrated at a velocity area station 360m d/s. The weir is at an angle to the upstream channel. Recorders u/s and d/s of the weir (the d/s gauge was removed in 1966). Chart records from u/s recorder since 1924. New recorder installed in 1958 and flow calculated from October 1960. Station closed in 1971. The station was reinstated in 2005 as a level only station when a level recorder and an H-ADVP in a 24m wide channel ~80m upstream of the weir were installed. The H-ADVP gauge has since been removed but a new rating was established and used to calculate flows again from November 2005.	Good measuring reach enclosed by steep riverbanks and weir not thought to drown. One peak flow rating applied across original period of record (1960-1970). Rating derived from multipoint current meter gaugings from cableway. Flood Studies Report grade A2 at all flows. New rating developed following re-opening of gauge and applied to period from 11/2005 to date. Gauged up to bankfull stage and rating gives a good fit to gaugings.	Record thought to be of little use before 1961. Records pre-1947 now thought lost. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Mixed geology: Millstone Grit (headwaters), Coal Measures, Magnesian Limestone and Triassic Sandstones. Moorland headwaters, mixed agriculture in valleys with significant urban areas, including Sheffield. Headwaters are heavily reservoired. Decline of coal mining and manufacturing industries throughout the period of record. Extensive urban development around Sheffield (with several large green field developments during the 1970s) and Chesterfield during period of record.	Headwaters are heavily reservoired with around two thirds of the catchment draining through some 27 impoundments and valleys are highly developed. The Rother has significant washlands (although few were controlled by 1971). Traditional industries including steel and mining are now in decline. Sewage effluent augmentation with approximately 2/3 of abstraction to public water supply returned to Rother above gauge. Import from Derwent Valley, but overall net loss of water from Don to Dearne. Abstraction into the Sheffield and South Yorkshire Navigation canal just upstream of the gauge.
27023	Dearne at Barnsley Weir	118.9	SE3497007279	434970.0	407279.0	53°33'39.4944"N 1°28'24.7249"W	53.56097	-1.47353	Dearne	Barnsley Weir	43.4	EA-Y	F0806	27	1960-01-01		CB		27.0	13.5	true	true	true	true	false	false	false	true	false	false	false	false	false	GI	1960-03-01	2023-09-30	1.362	0.12	1961-09-17	1961-09-23	108.0	2007-06-25	2007-06-25	0.28	0.486	0.706	2.9	4.48	0.48	23224	23204	99.914	1960-09-21		27.003	41.3	79.6	140.6	224.8	376.4	764	766	0.1769	0.2793	0.3724	0.0006	0.1612	0.1196	0.3152	0.4203	0.0079	0.1334				1.0			0.0449	0.32	0.539	0.938	74.4	25.15	35.1	49.1	10.2	25.43	12.76	148	78	0.26	41.3	119.56	0.381	0.699	0.0398	0.0649	0.727	0.592	0.0736	0.844	0.604	1953..1958	1953-10-01..1959-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir in a rural catchment with some abstractions.	Compound broad-crested weir (12m wide) with central notch 3.9m wide and 3.658m long formed in weir crest, flanking weirs (0.23m above weir) and float well constructed August 1959. Slightly curved in plan, weir drop of 2.4m. Weir crest broken May 1967, repaired December 1967. Cableway added in 1999.	Considered likely to drown only in extreme events - only known occurrence June 2007. Some bypassing on left bank at around 45.56 mAOD (2.2m stage) to storage. Rarely bypasses over the right bank. Two peak flow ratings applied across period of record. Theoretical rating for daily and peak flows originally developed using physical model with current meter gaugings. Rating revised in 2016. Gauged to a very high level in June 2007 but measured peak 0.75m above this gauging. Flood Studies Report grade A2 in absence of any other information, 1975 now A1 to 1.3m and grade B above.	Daily gauge readings commenced in June 1953, continuous flow records from March 1960. Extreme flood event in June 2007 well above any previous known floods. Period between 1953 and 1959 rejected due to unknown provenance of data. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Mixed geology of Upper Carboniferous, coal measures, very little superficial deposits. Predominantly rural catchment, mixed agriculture and woodland with urban development near gauging station. No trace of original course of River Dearne.	Some abstractions, including industrial uses. Discharge of minewater drainage - decreasing influence.
27024	Swale at Richmond	381.0	NZ1464100620	414641.0	500620.0	54°24'03.0228"N 1°46'33.5397"W	54.40084	-1.77598	Swale	Richmond	107.6	EA-Y	F2307	27	1961-01-01	1980-12-31	VA				true	true	false	true	false	false	false	false	false	false	false	false	false	N	1961-10-01	1980-12-31	10.444	0.261	1980-05-31	1980-05-31	277.5	1968-03-23	1968-03-23	1.169	3.426	5.522	24.24	36.0	0.35	7032	6941	98.706	1960-05-24	1981-01-01	240.541	108.3	246.8	416.4	563.3	714.3	1307	1226	0.0348	0.0047	0.546	0.3912	0.0049	0.0266	0.0032	0.355	0.6117	0.0027		1.0				0.3052	0.3048	0.62	0.342	0.999	134.4	49.28	42.9	55.6	11.0	48.74	26.16	411	86	0.16	108.3	377.97	0.589	0.854	0.028	0.0003			0.0009			1980		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a typical Pennine catchment. Station closed in December 1980. Replaced by 27090.	Velocity area station, 20m wide at low flows. Station closed 31-12-1980 when land lease for cableway (300m d/s of recorder) expired, cableway removed but chart recorder was retained and levels are still recorded here. 27090 (Catterick Bridge) commissioned in 1994, a new station 10km d/s to replace Richmond.	Unstable control for low flows. Two peak flow ratings applied across period of record, the most recent is valid from January 1966. Rated by current meter gauging. Flood Studies Report grade A1.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Typical Pennine catchment Almost wholly on Lower Carboniferous Limestone (95%), with outliers of Upper Carboniferous Millstone Grit series on some of the watersheds. Predominantly upland moorland and grass. No known catchment changes.	Very responsive regime. Abstraction for Catterick Camp is just u/s, but otherwise catchment shows a natural runoff pattern.
27025	Rother at Woodhouse Mill	352.2	SK4321385749	443213.0	385749.0	53°22'00.6579"N 1°21'07.3852"W	53.36685	-1.35205	Rother	Woodhouse Mill	28.7	EA-Y	F0304	27	1961-01-01		VA	250.0		8.2	true	true	false	true	false	false	false	true	false	false	false	false	false	SRPGEI	1961-10-01	2023-09-30	4.283	0.425	1970-10-12	1970-10-12	103.0	2019-11-08	2019-11-08	1.07	1.92	2.59	8.713	13.2	0.55	22645	21701	95.831	1959-05-01		49.713	32.0	67.5	122.3	212.1	392.2	760	756	0.1136	0.2946	0.3024	0.0047	0.2774	0.0926	0.3822	0.2841	0.0304	0.2061	0.0232	0.0123		0.9645	0.0019	0.0028	0.0495	0.38	0.494	0.937	69.2	27.97	34.4	43.0	10.5	39.49	23.27	134	77	0.16	32.1	351.1	0.512	0.84	0.0537	0.1033	0.103	0.883	0.125	0.871	0.94	1960		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway. Catchment includes former opencast mine Rother Valley Country Park.	Velocity area station (15m wide) in trapezoidal channel with current meter cableway. Gauge is downstream of a washland storage scheme and catchment has been significantly impacted by opencast mining.	Large trapezoidal channel with partial control from Orgreave weir 1.2 km downstream. No by-passing but flow is affected by upstream regulator and washland storage scheme, operation of the regulator holds water back during large flood events. Some variability in the rating at low flows, possibly due to seasonal weedgrowth. Channel also affected by modifications from opencast mine remediation and subsidence. Some evidence for lag/drawdown in stilling well in large flood events. Rated by gaugings, two ratings applied across period of record, latest applies from January 1974, although Orgreave weir was breached in June 1973 and repairs not completed until October 1974. Rating based on multipoint current meter gaugings and more recently with ADCP measurements. Flood Studies Report grade B assumed in 1975, now A1 to 2m, A2 to 3m and B above.	Chart records from May 1959 and flow records from October 1961. Sequences of identical low flows in the 1960s (but realistic). Control breached June 1973, repaired October 1974 but PTR found to be faulty and daily flow records not considered reliable until January 1976. Records from 01/1974 reprocessed (1977), earlier records are less reliable. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Catchment draining the moors and fertile farming valleys southwest of Sheffield. Mixed geology, principally Middle and Lower Coal Measures, with overlying Permian sands, marls and Magnesian Limestone are found down the eastern watershed. Land use: moorland headwaters, mixed farming and heavily urbanised valleys. Extensive urban development of Chesterfield over period of record.	Rother Valley Country Park mined by opencast methods, 1976-1981 but restored to become large controlled washlands in 1988. The washlands upstream of Woodhouse Mill are controlled by two in-line river regulators, which results in occasional distortion of the natural hydrograph. These structures have been operated several times during floods (including 2000, 2007, 2012 and 2019) and have a very significant effect on peak flows in the Rother. Abstractions and storage in reservoirs of northeast Derbyshire, Chesterfield, Bolsover and Clowne. Imports from the Derwent Valley reservoirs to Linacre reservoir. Abstractions to water supply from Ogston reservoir. Borehole abstractions made to Crowhole reservoir.
27026	Rother at Whittington	165.0	SK3933974468	439339.0	374468.0	53°15'56.7184"N 1°24'41.9847"W	53.26576	-1.41166	Rother	Whittington	58.4	EA-Y	F0203	27	1963-01-01		FVVA	180.0		13.0	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGI	1963-10-01	2023-09-30	1.934	0.09	1965-08-18	1965-08-18	87.2	2007-06-25	2007-06-25	0.273	0.588	0.983	4.41	6.64	0.44	21915	21723	99.124	1960-08-01		36.886	61.9	96.1	143.0	276.4	392.2	796	811	0.1069	0.223	0.37	0.0095	0.287	0.1092	0.2391	0.3907	0.0436	0.2141		0.0262		0.9738		0.0059	0.0202	0.38	0.491	0.973	73.3	27.91	35.2	43.6	10.4	18.8	10.57	163	79	0.22	61.9	167.03	0.386	0.79	0.0424	0.1064	0.744	0.738	0.1459	0.876	0.779	1959		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir in an open channel. Flow regime influenced by numerous abstractions and diversions.	Flat-V weir in an open-channel, on a straight, stable reach, just downstream of Chesterfield. Cableway located 50m u/s rebuilt 2003; new cableway covers larger cross-section of river. Replaced a shallow masonry V weir located a short distance upstream in October 1979. Improvements in water quality may be responsible for heavy, summer weed-growth.	Flows greater than the capacity of the weir rated using cableway 50m u/s. Railway embankment and high river wall at sewage treatment works thought to fully contain high flows, but hydraulic modelling suggests peak flows (>60 cumecs) may be underestimated. Flows bypassing station via Chesterfield Canal were measured at Wheeldon Mill Lock from October 1963 to 1989. Two peak flow ratings applied across period of record. Rating reviewed in 2012 and modified to increase flows slightly above bankfull stage, based on gauging during 2007 flood event - applied back to November 1979 when previous masonry weir replaced with current structure. Flood Studies Report grade A1 in 1975, now graded A1 to 2.9m and B above.	Flows from November 1979 reprocessed in 1996 and 2012. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	A catchment draining moors and fertile farming valleys to the southwest of Sheffield, including Dronfield and Chesterfield. Comprising mostly Pennine uplandsGeology: mainly Coal Measures with underlying Millstone Grit outcropping in the southwest of the catchment, except for a narrow alluvial strip, down the axis of a geosyncline in the valley. Mixed agriculture predominates, some moorland in headwaters (Peak District). Substantial urban development - population has grown fourfold since 1945. Industry has developed alongside residential growth. Once commonplace, now few traces of coal mining in the area remain. Chesterfield is immediately u/s of station.	Flows from November 1979 reprocessed in 1996 and 2012. The pre-1979 rating is a poor fit to gaugings and flows are likely to be underestimated.
27027	Wharfe at Ilkley	443.0	SE1121948140	411219.0	448140.0	53°55'45.3685"N 1°49'50.2615"W	53.92927	-1.83063	Wharfe	Ilkley	71.3	EA-Y	F1902	27	1961-01-01	1975-12-31	VA	410.0		0.0	true	true	true	true	false	false	false	false	false	false	false	false	false	SP	1961-10-01	1975-09-30	13.794	1.152	1969-09-10	1969-09-10	246.9	1965-12-09	1965-12-09	2.056	4.786	7.461	32.85	47.86	0.38	5113	5082	99.394	1960-04-06	1975-09-30	267.21	70.8	187.0	357.8	532.4	703.7	1385	1369	0.0577	0.0122	0.6744	0.2232	0.0141	0.0532	0.0036	0.5111	0.4175	0.0091		1.0			0.0299	0.1389	0.2476	0.62	0.366	0.976	137.1	46.48	43.4	57.9	11.1	61.97	32.95	354	161	0.13	71.0	445.29	0.524	0.889	0.0363	0.0019			0.0044					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Net inflow to the catchment from springs and sink holes. Station closed December 1975.	Velocity area station 20m u/s of Ilkley Old Bridge, the paved invert of which is low flow control for station. Open channel 37m wide. Replaced by Addingham (27043) 3.3km upstream in 1973. Discontinued as flow station in 1975 but level record continues. Cableway still used for calibration of Addingham.	Bypassing begins at 3.6m over the left flood bank and flows on the flood plain. Minor draw-down problem in float well. Multiple peak flow ratings applied across period of record, the most recent is valid from January 1970. Rated by current meter gauging from bridge and correlation with Addingham record, adjusted for abstractions and greater catchment area. Flood Studies Report grade A1.		Predominantly Lower Carboniferous Limestone and shales in the upper two-thirds of the catchment, and Upper Carboniferous grits and sandstones in the lower parts near Addingham. Extensive Boulder Clay and alluvium. No known catchment changes.	There are many springs and sink holes, and an examination of the catchment losses suggests there may be net inflow to the catchment. Water supply reservoirs at Barden and Chelker result in net export of water from the catchment, returns are through the Aire and Calder system. Grimwith reservoir upstream (catchment area about 25 sq.km) provided compensation releases to augment low flows.
27028	Aire at Armley	691.5	SE2805734020	428057.0	434020.0	53°48'06.2253"N 1°34'31.7538"W	53.80173	-1.57549	Aire	Armley	26.1	EA-Y	F1707	27	1961-01-01		B VA	232.0		9.4	true	true	true	true	false	false	false	true	false	false	false	false	false	SPEI	1961-01-01	2023-09-30	15.229	1.501	1965-07-04	1965-07-04	303.0	2015-12-26	2015-12-26	3.362	5.857	8.93	34.75	49.1	0.48	22918	22858	99.738	1961-12-01		139.703	28.4	103.4	202.1	361.4	586.0	1034	1048	0.0944	0.0327	0.6138	0.0777	0.167	0.0655	0.0182	0.585	0.1496	0.1774		0.8221	0.0043	0.1735	0.0069	0.0392	0.581	0.49	0.408	0.968	95.2	38.51	37.8	50.5	10.5	81.0	45.05	220	120	0.11	28.4	687.01	0.743	0.986	0.0586	0.0724	0.774	0.556	0.1051	0.861	0.578			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Lower catchment is heavily urbanised. The headwaters are rural and influenced by numerous reservoirs.	Velocity area station on a straight, industrial reach. Station is located 100m downstream of twin arch viaduct, and confined by canal embankment (right bank, 11.19m) and a high wall (left bank, 5.96m). Channel control provided by two broad-crested weirs set in arches (20m wide) 1.8km d/s under Leeds train station. Station prone to heavy weedgrowth in summer. Changes in weir condition, 1971 and crest deterioration, 1975 not thought important for high flows. Weir crest reconstructed 1978. Instrument building destroyed by fire in 2008, station rebuilt at same section but on opposite (left) bank in 2010.	Rated for all flows by cableway at the section. No bypassing is known but wall was close to overtopping in 2000. Weir crest reconstructed and re-rated in April 1978, but flood calibration was unaltered. Two peak flow ratings applied across period of record. Upper limb of all ratings since April 1978. Low flow weed correction not shown.	Pre-1971 data are less reliable. Data 19/05/2008 to 08/09/2010 estimated using correlation with Leeds City Station gauge a short distance downstream due to temporary station closure. Estimates are within +/-15% of expected Armley flows. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Catchment draining the east side of the Pennines above Leeds. Geology comprises predominantly Carboniferous Limestone in the headwaters down to Skipton, and Millstone Grit and Lower Coal Measures. Extensive superficial deposits. Rural headwaters, with considerable urban and industrial development in the lower catchment. Influenced by reservoirs. Estimated 12.7% of catchment drains through 18 impoundments. Large reservoirs include Winterburn, Ponden, the Denholme Group.	Reservoir groups include Skipton, controlling 4.1% of total area, Keighley 4.7%, Denholme 1.8% and Bingley 1.8%. Zero flow when river level drawn down below weir crest by Kirkstall Power Station (license revoked 1978), now closed. Abstractions returned to river on site. Discharge received from sewage treatment at Bradford (Esholt) and some industrial abstractions. Washlands created at Skipton and Silsden to manage flooding at Keighley and Leeds.
27029	Calder at Elland	341.9	SE1243421966	412434.0	421966.0	53°41'38.3734"N 1°48'47.4197"W	53.69399	-1.81317	Calder	Elland	58.4	EA-Y	F1203	27	1961-01-01		C VA			5.0	true	true	true	true	false	false	false	true	false	true	false	false	true	SPI	1961-10-01	2023-09-30	8.439	1.08	1976-08-22	1976-08-22	190.0	2015-12-26	2015-12-26	2.04	3.37	4.91	18.7	27.0	0.5	22645	21688	95.774	1953-08-01		132.707	59.5	151.2	303.0	411.2	503.4	1264	1257	0.1265	0.0153	0.4612	0.2728	0.0838	0.0749	0.0167	0.4176	0.3781	0.0985		0.9094		0.0906	0.0033	0.2807	0.0131	0.57	0.455	0.931	138.6	38.53	43.3	58.7	11.2	35.53	20.46	292	103	0.14	59.5	340.75	0.401	0.882	0.0256	0.0338	0.663	0.555	0.0477	0.749	0.628	1952..1981	1952-10-01..1970-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested masonry weir in catchment with heavily urbanised valley floors and rural headwaters.	Broad-crested masonry weir 53m wide with a 5m Crump-profile notch adjacent to the right wing wall for low flow measurement. In July 1969, deteriorating timber-crest replaced by concrete-cap. Low flow notch enlarged 1971 followed by recalibration. The weir is a short distance downstream of a bend. When the old canal, 'Tag Cut' was infilled, historic problem of flows bypassing the station removed.	Current metering of low-flows was originally from the footbridge 200m downstream in June 1954, then from 1962 using an adjacent cableway. A pressure-bulb recorder was installed to monitor high flows in 1969. Cableway burned 1989 replaced by rail on vehicle bridge 200m d/s, 1996. Water level recorder re-sited nearer the river in 1980. Flow out of bank at recorder is contained at cableway. Two peak flow ratings applied across the period of record. Crump weir formula for weir notch with main weir calibrated by current metering from bridge. Flood Studies Report grade of A2 downgraded to C when computed flows were compared with original rating in 1975.	Previous period-of-record maximum flow occurred in October 1967 but considerable uncertainty surrounds the event magnitude. The EA record a figure of 520 cumecs, but this is known to have been extrapolated and may have been affected by hydrometric changes. Partial weir collpased was repaired to same specifications in June 1982 necessitating a new rating curve. Flows reprocessed, resulting in a substantial increase in high flows and a decrease in low flows. Gaugings from 1987 were subject to systematic error and not used. Rating review in 2020, based on hydraulic modelling, reduced flows above 1.65m stage (1971-present). Pre-1971 peak flows are rejected as there is no known suitable rating for this period.	Catchment draining the eastern flank of the Pennines, above Halifax. Geology comprises Upper Carboniferous Millstone Grit Series but includes a small area of Lower Coal Measures at Elland. The headwaters rise from peat-covered moorland. Very steep and often-wooded, headwater valleys cut down through Millstone Grit. Valley bottoms of lower catchment are heavily urbanised and industrialised. Valleys rise steeply to moorland predominantly covered by peat. Higher land is roughly grazed. The valley floors are urbanised and industrialised; the catchment contains Halifax and Elland. Increasing urbanisation in valley bottom towns during period of record.	Heavily impounded with around 18 reservoirs controlling about 15.4% of total watershed, mainly by small impoundments, but including Walshaw Dean. Some abstraction to supply the Yorkshire Grid.
27030	Dearne at Adwick	310.8	SE4767702022	447677.0	402022.0	53°30'45.8099"N 1°16'57.0444"W	53.51272	-1.28251	Dearne	Adwick	12.7	EA-Y	F0803	27	1963-01-01		CCVA	45.0		8.0	true	true	false	true	false	false	false	true	false	false	false	false	false	PGEI	1963-11-01	2023-09-30	3.439	0.513	1976-08-18	1976-08-18	72.7	2019-11-08	2019-11-08	0.984	1.53	2.097	6.93	10.2	0.57	21884	21703	99.173	1956-10-29		42.017	14.1	38.1	94.8	187.4	376.4	707	696	0.1577	0.3266	0.2803	0.0003	0.2229	0.0983	0.3799	0.3235	0.0128	0.1798	0.0012			0.9988	0.0013		0.0894	0.32	0.533	0.952	61.5	25.42	33.8	45.7	10.3	45.53	21.51	105	86	0.2	14.1	310.98	0.637	0.67	0.0715	0.0971	0.717	0.822	0.1056	0.852	0.83			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir in a heavily urbanised and industrialised catchment. Flow regime controlled by washlands since the gradual closure of mines.	Compound Crump weir with broad-crested flanks built 1963, total width 17.4m, 400m d/s of Adwick Bridge. Cableway located 25m upstream of weir. Fish pass installed June 2013.	Compound weir with central Crump profile section 5.5m wide, broad-crested flanking weirs with crests 0.4m higher than central weir, sloping side walls and no divide piers. No known bypassing, flow contained by raised embankments, however site is subject to variable back-water from the river Don confluence downstream in large flood events. Problems with draw down effect in stilling well were remedied in 1968. Weir possibly subject to mining subsidence. Rating developed from Crump formula modified to fit to check gaugings at cableway 25m upstream. Rating revised in 2016 to account for drowning / variable backwater but considerable scatter in gaugings above 1.2m stage. Separate level record and rating for fish pass (installed 2013) with flow added to weir flow to calculate total flow. Flood Studies Report grade A2 to 1.4m then B for straight-line extrapolation.	Continuous level data from 1961. Flow data from November 1963 but data pre-1975 is thought to be less reliable. Post-1975 flows reprocessed in 1996 (low flows reduced, high flows increased) and again in 2016 (high flows reduced). Major flood events affected by backwater, allowed for in rating but with considerable uncertainty above 1.2m stage (40 cumecs). Increased flows 02/12/2013-05/12/2013 a result on contractors working on site affecting the water level. Data marked as estimated. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Geology: primarily Carboniferous Coal Measures. Lower Coal Measures dip gently east northeast under more extensive Middle Coal Measures. Shales, overlain by alluvium. Land use: arable farming and moorland pasture in the headwaters. Significant urban development in middle reaches and valleys, including Barnsely. Coal mining and subsequent subsidence of land. Decline of coal mining and manufacturing industries throughout the period of record. Barnsley's growing population (and thereby development) peaked with the mining economy in 1971 (a quarter of Barnsley's population of Barnsley worked in mining by 1981). All mines were closed by 1994 with population decline since. The death of the industry left a legacy of abandoned deep mining pits and opencast coalmines, their associated spoil tips and mine works.	Abstraction to supply from Scout Dike reservoir group and Midhope reservoirs in the Don, discharged to Dearne. Reservoir influence from Worsborough and Bretton Lakes draining around 20% of the catchment. Moderately heavy industrialisation, mine drainage, sewage effluent augmentation and net import of water from Don. Hydrological characteristics altered by surface works and groundwater rebound in response to mine water pumping. The construction of washlands in the Dearne catchment has been an ongoing activity since the gradual closure of mines. Some of the washlands are controlled by two structures: A river regulator at Bolton (upstream of Adwick) and a side sluice gate at Dearne Mouth (downstream). Uncontrolled washlands operate at flows from QMED upwards, the sluice and regulator are operated only in major flood events.
27031	Colne at Colne Bridge	245.0	SE1739119921	417391.0	419921.0	53°40'31.6979"N 1°44'17.5786"W	53.67547	-1.73822	Colne	Colne Bridge	47.9	EA-Y	F1102	27	1964-01-01		C VA		42.0	7.9	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGI	1964-01-01	2023-09-30	4.441	0.058	1992-02-13	1992-02-13	113.0	2022-02-20	2022-02-20	0.645	1.33	2.21	10.2	15.4	0.41	21823	21775	99.78	1963-12-13		90.357	47.4	115.3	227.3	407.2	580.3	1131	1144	0.1796	0.0506	0.4642	0.1283	0.1567	0.1067	0.0845	0.4499	0.1826	0.1677		0.6056		0.3944		0.1242	0.0177	0.52	0.606	0.947	121.8	24.21	44.3	60.1	11.1	27.43	15.67	246	54	0.24	47.4	245.58	0.65	0.724	0.0306	0.0786	0.703	0.568	0.0896	0.775	0.616	1963		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A non-standard broad-crested weir within high banks containing all flows.	A non-standard, curved, concrete broad-crested weir 52m wide with an off-centre steel-crested Crump weir notch 3.8m wide for more accurate low flow measurement. Broad-crested flanking weirs 0.4m higher. The existing sidewalls extend well upstream and no end contractions are known. Located within high, regular-profile riverbanks which contains flow at all levels. Colne Bridge is located about 650m upstream of the confluence with the Calder. There are some problems of silting.	Weir control, no bypassing. Low flow rating from Crump formula, empirical rating for higher flows fitted to gaugings at cableway 200m d/s. Gauged to AMAX3 and 85% of AMAX1. Rating reviewed in 2020, revised rating D gives good fit to high flow gaugings from 2012 flood event. Flood Studies Report grade B.	Although such events are rare, the 1946 flood level reached 2.4m over the Crump. Low flows in February 1992 due to a landslip event causing ponding u/s of station; flows bypassed through nearby canal. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	The catchment draining the East side of the Pennines above Huddersfield. Mixed geology with Carboniferous Millstone Grit in the upper catchment and Coal Measures, which dip under Lower Coal Measures in the lower part. Catchment comprises peat-covered moorland headwaters used for rough grazing. Steep valleys descend rapidly to heavily industrialised and densely settled valley bottoms and which includes Huddersfield. Continuing increase in urbanisation around Huddersfield during period of record.	There are numerous small storage reservoirs in the Colne valley. An estimated 16.75% of catchment drains through around 8 reservoirs. Abstractions are made for supply at Huddersfield. Some imports of water received from Deanhead reservoir and groundwater abstractions. Export of water is made from Blackmoorfoot reservoir. Industrial abstraction from downstream of the confluence with the Calder is discharged back to the Colne upstream of the station. Industrial abstraction along the Huddersfield Broad Canal.
27032	Hebden Beck at Hebden	22.17	SE0248164255	402481.0	464255.0	54°04'27.1869"N 1°57'48.8779"W	54.07422	-1.96358	Hebden Beck	Hebden	228.2	EA-Y	F1960	27	1965-01-01		MIS		6.0	4.2	true	true	true	true	false	false	false	true	false	true	false	false	true	P	1966-03-01	2023-09-30	0.179	0.009	1983-08-19	1983-08-30	3.63	1993-09-13	1993-09-13	0.029	0.06	0.1	0.405	0.599	0.43	21033	20889	99.315	1965-08-20		4.052	228.1	337.8	457.8	565.5	692.7	1451	1433	0.0019	0.0014	0.4362	0.5106	0.0017	0.0159		0.2304	0.7528	0.0009		1.0				0.2549	0.094	0.62	0.252	0.997	99.4	57.36	42.0	54.9	11.5	12.43	6.26	453	180	0.4	228.1	22.25	0.237	0.89	0.0206	0.0			0.0			1969..1975		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Thin-plate V notch weir with a parallel Crump weir. Partially Karstic catchment, true drainage area unknown.	Compound structure with a thin plate V notch weir (1.2m wide) in parallel with a Crump weir (3.35m wide), originally to monitor a Craven Water Board abstraction (no longer active), abstraction was not permitted when flow fell below 0.01 cumecs.	Compound structure in a steep, rocky channel comprising thin plate V notch weir (half 90 degree) in parallel with a Crump weir. The V notch is for greater sensitivity at low flow, while the Crump allows measurement to extend to high flows. The V notch capacity is limited by a horizontal cut off wall at 0.4m stage, above this it behaves as a submerged orifice. Crump weir crest at approximately 0.38m stage. Significant bedload and approach channel affected by accretion of gravel and cobbles. Some limited out of bank flow in the highest events but no bypassing. One rating applied across period of record, derived from weir formulae for V-notch/orifice and Crump. Rating supported by check gaugings but only to around 50% of QMED. Flood Studies Report grade A1.	Considered to provide reasonable data. Extreme event on 13/08/1975 damaged the gauge and chart failed, peak subsequently estimated at 27 cumecs based on Manning formula. This very high peak partly a result of blockage and subsequent dam break upstream, the AMAX has been rejected in the Peak Flow Dataset. Data for WY1975/1976 also rejected due to missing data. Largest event recorded at the gauge (October 1998) may also have been affected by u/s blockage and subsequent dam break. Suspect flat trace in May-June 2004 due to instrumentation problems. Peak flow on 20/07/2014 thought to be correct, 15.6mm of rain recorded at Grimwith tipping bucket raingauge. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Steep, upland catchment; mostly moorland developed on Carboniferous Limestone, Millstone Grit and Shales. The watercourse flows in a boulder channel. The catchment is partly Karstic Limestone and has numerous swallow holes and resurgences; true drainage area uncertain. No known catchment changes.	Unusual flow regime, exhibits unresponsive behaviour in periods of low flow, thought to be result of a band of carboniferous limestone crossing the catchment with numerous sinkholes and dry valleys. The upper catchment only contributes flow accross this Karstic band in large flood events, leads to uncertainty in the representative catchment area for the gauge. Flow also influenced by old mine workings and one small upstream abstraction (now ceased), but otherwise predominantly natural flow regime. A quarry access road crosses the dry valley upstream of the gauge and can act as a dam in flood events, causing water to pond up behind (this breached in August 1975 event, resulting in very high peak flow).
27033	Sea Cut at Scarborough	33.2	TA0271290737	502712.0	490737.0	54°18'06.9249"N 0°25'23.1803"W	54.30192	-0.42311	Sea Cut	Scarborough	20.6	EA-Y	F2603	27	1966-01-01		CB	115.0	115.0	20.0	true	true	false	false	true	false	false	false	false	false	false	false	false	R	1969-10-01	2023-09-30	1.244	0.048	1991-10-03	1991-10-04	39.19	1999-03-05	1999-03-05	0.077	0.148	0.44	3.277	4.812	0.39	19723	19608	99.417	1965-01-01		49.117	20.3	45.5	89.0	159.3	202.8	767	753	0.1478	0.3866	0.3504	0.0013	0.1105	0.1817	0.2312	0.4915	0.0186	0.077		0.9107	0.0893		0.003		0.6291	0.33	0.466	0.999	79.4	33.13	34.4	44.3	10.7	13.44	6.64	96	129	0.24	21.1	32.91	0.375	0.816	0.0458	0.0379	0.661	0.505	0.053	0.825	0.476	1964..1978		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir in a diversion channel passing flood waters from the upper Derwent. This means the contributing area varies at high flows.	Compound broad-crested weir 21m wide with central notch 2.9m wide and crest level of 20.6 mAOD; the flanking weirs are 0.152m higher. A cascade of weirs, making drowning highly unlikely. The channel was artificially extended in the last century. The Sea Cut is primarily a diversion channel which passes flood waters from the upper 88.8 sq.km of the Derwent, although it has a small catchment of its own as well.	Many springs d/s of the gauge hinder estimation of flow without the Derwent contribution. A sluice allows a maximum of 5 cumecs to flow into the Derwent when fully open, but can be overtopped. Daily flows rated by model tests. One peak flow rating applied across period of record. Good fit to available gaugings at lower flows but recent high flow gaugings suggest rating under-estimates high flows and a rating review is required. Flood Studies Report assumed grade to be A2.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP files v8). The catchment is classified as suitable for Neither QMED nor Pooling, but could be used in local studies after careful analysis of catchment area and other catchment descriptors.	The natural catchment drains part of the North York Moors. Contributing area varies by +/- 88.8 sq.km because of the artificial connection to the headwaters of the Derwent. Geology of natural catchment is Oolite Cornbrash, Oxford Clays and Corallian of the Jurassic Period, which dip south and are overlain in the east by thick Boulder Clay deposits. No known catchment changes.	Sea Cut flows are controlled by a sluice; the channel was artificially extended in the 19th century to join the Derwent, and now acts as an overflow channel in high flows.
27034	Ure at Kilgram Bridge	510.2	SE1906285989	419062.0	485989.0	54°16'09.1382"N 1°42'31.7329"W	54.26921	-1.70881	Ure	Kilgram Bridge	87.5	EA-Y	F2206	27	1968-01-01		VA	375.0		13.0	true	true	true	true	false	false	false	true	true	true	true	false	true	P	1967-10-01	2023-09-30	16.533	0.386	1995-08-24	1995-08-24	333.0	1991-02-23	1991-02-23	1.28	4.15	8.1	40.9	60.35	0.32	20454	20451	99.985	1967-07-05		252.951	85.6	171.1	368.5	545.6	714.3	1344	1337	0.0548	0.0228	0.7059	0.1928	0.0112	0.044	0.0168	0.5053	0.4259	0.0071		1.0			0.0166	0.1457	0.4186	0.63	0.386	0.99	129.6	46.93	45.3	59.8	11.2	60.67	33.45	366	83	0.14	85.6	510.94	0.955	0.856	0.0452	0.0016			0.0043			1966..1979		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Kilgram Bridge acts as a control at low and high flows.	Velocity area station. Low flow control is exercised by the sill of Kilgram Bridge 70m d/s. The bridge piers present a sufficient obstruction to cause critical depth, even at low flows. Road bridge acts as a weir at the very highest flows.	Good measurement of high flows; some floodplain storage over the left bank, but all flow is gauged through the section. Daily and peak flows rated by current meter at a cableway. Two peak flow ratings applied across period of record. Reasonable fit to available gaugings. Flood Studies Report grade A1.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Geology: mainly Carboniferous Limestone with Millstone Grit outliers, with significant Boulder Clay cover. The stretch from Middleham to Westwick is Millstone Grit Series, though extensively covered by Alluvium. Rural, predominantly grassland catchment draining from moorland Pennine headwaters. No known catchment changes.	Fairly natural regime, small PWS abstraction to Thornton Steward immediately upstream of the gauge.
27035	Aire at Kildwick Bridge	282.3	SE0110645684	401106.0	445684.0	53°54'26.3274"N 1°59'04.7433"W	53.90731	-1.98465	Aire	Kildwick Bridge	87.3	EA-Y	F1503	27	1968-12-01		VA	77.0		13.0	true	true	true	true	false	false	true	true	true	true	true	false	true	S	1968-12-01	2023-09-30	6.669	0.261	1970-06-26	1970-06-26	137.0	2015-12-26	2015-12-26	0.656	1.65	3.14	17.0	25.5	0.37	20027	20026	99.995	1966-11-28		57.618	87.9	123.6	200.7	389.5	586.0	1131	1151	0.0618	0.0329	0.8085	0.0468	0.0385	0.0506	0.0125	0.7558	0.1431	0.0338		0.9895	0.0105		0.005	0.0002	0.6302	0.62	0.385	0.977	99.6	42.48	39.3	52.8	10.5	38.45	21.29	230	168	0.12	88.0	283.39	0.842	0.791	0.0732	0.0089	0.61	0.577	0.0193	0.729	0.62			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a predominantly rural catchment with light urbanisation in Skipton.	Velocity area station situated in 21m wide channel d/s of a bend in the river and u/s of the old, arched Kildwick Bridge. Station provides full range flows.	Bridge arches form the primary hydraulic control at all levels. Flow is through between one (9.5m wide) and four (29.5m combined width) of the arches depending on level. Flow begins to surcharge the arches at different levels. The bridge sills provide the low flow control; arch soffits partial control at high flows but also influenced by downstream channel control. The road bridge and steep grassy banks prevent bypassing, all but the highest discharges are contained. Flood Studies Report was graded Z in 1975. One peak flow rating applied across period of record. Increasing scatter in gaugings beyond 1m stage. Gauged to more than 1.5 x QMED and to 87% of AMAX3. Check gaugings are done at a cableway around 100m downstream of the bridge.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Geology: mainly Carboniferous Limestone with some Millstone Grit series, with extensive Boulder Clay cover. Rural catchment, over three-quarters grassland, draining the eastern Pennines. The catchment headwaters are undeveloped with moorland. Land use consists of upland rough grazing, and pasture and light urbanisation in the valley bottoms (Skipton is the largest town). No known significant catchment changes.	Between Skipton and Kildwick, there are considerable areas of washlands, which fill during floods and attenuate downstream flows. Abstraction for supply is made from reservoirs at Embsay and Elslack and for canal support at Winterburn. The Leeds-Liverpool Canal can influence the flow pattern but has a small overall impact. There is a small net export from the catchment.
27038	Costa Beck at Gatehouses	7.8	SE7740583621	477405.0	483621.0	54°14'32.7831"N 0°48'49.4409"W	54.24244	-0.81373	Costa Beck	Gatehouses	21.9	EA-Y	F2518	27	1970-01-01		C			12.8	true	false	false	false	false	false	false	true	false	false	false	false	false	G	1970-08-07	2023-09-30	0.618	0.283	1990-09-11	1990-09-11	7.29	2008-09-06	2008-09-06	0.384	0.495	0.566	0.825	0.933	0.95	19413	19263	99.227				26.5	28.4	77.0	143.1	164.3	721	717	0.0335	0.5296	0.3313		0.099	0.0102	0.6814	0.2458	0.0011	0.0608		0.6673	0.3327		0.0122	0.2389		0.4	0.755	0.987	34.1	12.21	31.2	40.9	10.6	6.53	3.22	78	189	0.69	27.0	8.85	0.661	0.404	0.1611	0.0277	0.607	0.655	0.04	0.76	0.638			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Single-crest Crump weir in a small rural catchment with a strong groundwater influence. Weed growth can be problematic at the station.	Single-crest Crump profile weir 5.2m wide, between the abutments of a demolished railway bridge, in a largely artificial section which has been canalised for drainage. The bed is silty and accretion occurs on the weir apron. Removed from peak flows dataset in April 2017 (WINFAP Files v5).	Some bypassing of gauge via West Drain, but all flows at the station are contained within the high wing walls. Weed growth can cause drowning at low flows, as can water backing up from the Vale of Pickering. Modular limit estimated at 0.45m, gauged up to 0.21m. Theoretically rated for daily flows using Crump formula, but this is inaccurate at high flows. Rating applies from record start.	Long periods of extensive weed growth can make measured stage and applied rating inapplicable. Station affected by weed growth causing missing data and suspect flows (e.g. 2000, 2001 & 2006).	Small rural catchment on southern edge of North York Moors. Geology: permeable Oolitic Limestone, covered by post-glacial lacustrine clays in south. The upper part is Middle Oolite Grits and Limestone, which dip south under Upper Oolite; this in turn is covered by post-glacial lacustrine clays. The groundwater catchment greatly exceeds the topographical catchment. No known catchment changes.	Variation in flows is limited due to the dominant groundwater influence; the Beck is largely spring-fed from Keld Head about 2km u/s. A predominantly natural regime apart from some pumping at Keldhead spring (for public water supply), and some abstractions/returns from cress beds and a trout farm.
27040	Doe Lea at Staveley	67.9	SK44297460	444290.0	374600.0	53°15'59.5886"N 1°20'14.7136"W	53.26655	-1.33742	Doe Lea	Staveley	48.3	EA-Y	F0103	27	1970-01-01		FL		9.8	16.0	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1970-07-22	2023-09-30	0.582	0.019	1976-08-27	1976-08-27	20.4	2007-06-25	2007-06-25	0.117	0.195	0.294	1.23	2.0	0.47	19429	19429	100.0	1970-07-22		10.864	51.5	70.7	110.5	164.4	203.1	717	708	0.0525	0.4387	0.2788		0.218	0.0659	0.6209	0.1719	0.0297	0.1076	0.1192			0.8808			0.0532	0.38	0.433	0.968	62.1	32.6	34.1	41.6	10.7	17.74	7.88	114	18	0.13	51.5	68.12	0.473	0.721	0.0574	0.0564	0.684	0.755	0.0604	0.846	0.825	1969		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular flume affected by subsidence in the past.	Rectangular critical-depth flume (throat width 3m, bed-hump 0.3m) in concrete trapezoidal channel (2:3 side slopes, 5.5m wide). Hump and downstream slopes form the control. No cableway. Constructed by diversion of river. Mining subsidence caused the flume to tilt. The flume appears to have been stable since 2002.	No known bypassing. Two ratings applied across period of record. Theoretical rating used initially but then structure affected by mining subsidence and current meter rating developed. First rating applied from July 1970, later revision only applied from September 1996 due to uncertainty in timing and impact of subsidence. Rating reviewed in 2019, change due to subsidence deemed likely to only impact at low flows, a revised rating was developed to combine low flow limb from 1970-1996 rating (B) with the high flow limb from current rating (C). This gives improved fit to high flow gaugings, pre-1996 AMAX now significantly increased.	1969/70 is only a partial year and likely to have missed AMAX so peak is rejected. Truncation of early charts due to lack of range (1970-72) affected three PoT events, peaks estimated for these and considered reasonable. Pre-1996 high flows reprocessed and increased in 2019 and now considered reliable. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	A catchment draining a lowland, predominantly rural catchment southwest of Chesterfield. Draining both sides of the motorway, the river runs north, close to the M1 for most of its length. Mixed geology comprising Coal Measures, Permian Marls and Magnesium Limestone. Predominantly rural catchment. Substantial areas of mining tips with areas of urbanisation in lower reaches including Bolsover. Decline of coal mining industry over the period of record.	Large abstractions made upstream for coal washing affect earlier records, ended with mine closures. Small net import, including sewage effluent and mine drainage.
27041	Derwent at Buttercrambe	1586.0	SE7311258712	473112.0	458712.0	54°01'09.2781"N 0°53'08.2214"W	54.01924	-0.88562	Derwent	Buttercrambe	9.5	EA-Y	F2807	27	1973-01-01		C US		74.8	6.1	true	true	true	true	false	true	false	true	true	true	true	true	true	RPI	1973-09-03	2023-09-30	16.889	2.66	1976-08-17	1976-08-17	140.0	2000-11-09	2000-11-09	4.37	8.04	12.1	35.6	46.4	0.7	18290	18290	100.0	1973-09-03		70.662	9.5	25.4	102.4	271.9	453.2	784	765	0.1543	0.4146	0.2676	0.1211	0.031	0.1556	0.438	0.2716	0.1221	0.0118	0.0268	0.5145	0.4416	0.017	0.0089	0.2508	0.0786	0.34	0.608	0.994	76.8	28.21	32.2	42.2	10.6	99.17	54.85	128	160	0.14	9.5	1594.24	1.098	0.819	0.141	0.0072	0.542	0.857	0.008	0.721	0.852	1972		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir installed 1973 with ultrasonics since 2001. Replaces 27015. Poor flow correlation between the two sites.	Crump weir (20m wide) installed September 1973. Station replaces 27015 which had poor quality data. Crump weir supplemented by in-line path ultrasonic gauge for high flow measurement from 9-11-2001. Peak flows from the headwaters are diverted down the Sea Cut (27033). All data for this site is held against this station number. Larinier fish pass built adjacent to weir in 2013 and hydro-electric turbine installed in 2017. Crossed-path multi-path ultrasonic gauge installed 70m upstream of the weir in 2011, this replaces measurement at the weir from 2013.	Crump weir formula accounts for non-modular flow at approx 55 cumecs (1.2m). This was verified using gaugings and ultrasonic flow data. The weir drowns at approximately 1.2m, and is overtopped on the left bank above 1.9m - this may lead to an under-estimation of flows. However, this is small and extrapolation is appropriate. A bund upstream ensures floodplain storage returns through section but flows over 1.9m bypass along a vehicle track and return downstream of the station. The bypassing was estimated to be around 50-60 cumecs in 2000. Peak flow rating derived from gaugings, including two from November 2012 which also included measure of bypass flow and confirm rating extrapolation is good. Single path ultrasonic gauge replaced by crossed-path multi-path gauge in 2011, which measures flows up to 1.9m, but some bypassing occurs above this.	Pre-October 1973 data (monthly only) of poorer quality; derives from 27015. Overlap between data at 27041 and 27015 is limited and the flow correlation disappointing. Structure drowned and bypassed in March 1999 & Nov 2000 floods but rating extrapolation does allow for this. Gap in ultrasonics record 4/11/2002 to 30/09/2003. Ultrasonic gauge replaces rated flows from May 2013. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Mixed geology. Limestones and sandstones bordering the Vale of Pickering; Oxford Clay, shale and sandstone to the north, and sands, clay and gravels in the Vale of Pickering. Rural catchment - moorland and forestry dominate in northern headwaters which drain North York Moors. Arable significant in south. No known catchment changes.	Catchment shows a slow hydrological response and includes a groundwater component with considerable flood plain storage. Peak flows from the headwaters u/s of Forge Valley (approximately 6.5% of the catchment) are diverted down the Sea Cut (27033). Minor net impact of artificial influences (spray irrigation is appreciable).
27042	Dove at Kirkby Mills	59.2	SE7046885533	470468.0	485533.0	54°15'38.2340"N 0°55'10.9556"W	54.26062	-0.91971	Dove	Kirkby Mills	35.6	EA-Y	F2560	27	1972-01-01		FV			13.6	true	false	false	false	false	true	true	true	true	true	false	true	true	N	1972-01-17	2023-09-30	1.083	0.128	2022-08-13	2022-08-13	24.7	2000-10-30	2000-10-30	0.221	0.449	0.737	2.22	3.07	0.59	18885	18885	100.0				35.7	105.9	202.2	373.2	432.5	950	903	0.1024	0.1327	0.3893	0.3243	0.0299	0.089	0.1285	0.4434	0.329	0.0099		0.5697	0.4303			0.1293		0.4	0.495	1.0	136.0	36.84	33.6	45.3	10.1	26.74	14.65	221	171	0.27	35.7	60.34	0.309	0.62	0.0258	0.0053	0.496	0.215	0.0082	0.777	0.181			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir in a rural catchment on the River Dove.	Flat-V weir, 8m wide.	Some concerns over backwater effects and some bypassing at very high flows on the right bank. Theoretical rating; becomes non-modular at high flows (~7-8 cumecs) introducing significant uncertainty.	Data reprocessed in 2015 due to a rating change - applied from 14/01/1972.	Jurassic limestone, clays and sandstone. Rural catchment with moorland headwaters.	Predominantly natural flows. Subsurface inflow from R. Seven catchment (27057) may represent a significant proportion of summer baseflow.
27043	Wharfe at Addingham	427.0	SE0914649298	409146.0	449298.0	53°56'22.9816"N 1°51'43.7918"W	53.93972	-1.86216	Wharfe	Addingham	79.7	EA-Y	F1903	27	1974-01-01		C VA	500.0		10.0	true	true	true	true	false	true	false	true	false	true	true	true	true	SP	1973-12-18	2023-09-30	14.318	0.816	1976-08-25	1976-08-25	287.0	1991-02-23	1991-02-23	1.81	3.99	6.74	36.2	52.2	0.34	18184	18087	99.467	1973-11-01		266.012	79.6	191.2	363.8	535.5	703.7	1402	1385	0.0546	0.0109	0.6764	0.2271	0.0122	0.0512	0.0035	0.5077	0.4248	0.0072		1.0			0.031	0.1439	0.2415	0.62	0.366	0.975	138.1	46.68	43.7	58.4	11.2	58.7	30.68	360	165	0.14	79.6	430.0	0.502	0.908	0.0351	0.0012			0.0036					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir with flanking weirs. Cableway located d/s at 27027. Regulation releases from Grimwith Reservoir since 1984.	Crump profile crest(12m wide) in a broad-crested, round-nosed flanking weirs (0.7m higher), 48m overall width. Station measures full range flow for water resource management and flood forecasting / warning. Replaced station 3.3km d/s at 27027 (Ilkley), cableway for high flow gauging remains at Ilkley.	No bypassing, although structure overtopped and may drown in large flood events. Theoretical daily flow rating. Gaugings undertaken at 27027 (Ilkley) cableway 4km d/s, usually 30 minute allowance is made for travel time between the two stations. One peak flow rating applied across period of record. Validated by current meter gaugings.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly natural upland catchment on Lower Carboniferous Limestone and Shales in the upper catchment and Lower Carboniferous Grits and Sandstones in the lower catchment near Addingham. Some Boulder Clay cover and peat in headwaters. Rural catchment, predominantly moorland and pasture. Grimwith reservoir impounded 1864.	Flashy flow regime substantially influenced by reservoir operation. Grimwith Reservoir originally impounded 1864. Enlargement works commenced 1976 and regulation releases from June 1984. Howvever, there is little impact on high flows. Significant u/s abstraction at Lobwood (from 1970); at low flows the abstraction is compensated by releases from Grimwith Reservoir (measured at 27063) so net impact at Addingham is reduced.
27044	Blackfoss Beck at Sandhills Bridge	47.0	SE7249147392	472491.0	447392.0	53°55'03.3942"N 0°53'52.0084"W	53.91761	-0.89778	Blackfoss Beck	Sandhills Bridge	5.7	EA-Y	F2835	27	1974-01-01		FV			29.3	true	false	false	false	false	false	false	true	false	false	false	false	false	EI	1974-07-19	2023-09-30	0.448	0.004	1976-08-20	1976-08-20	19.6	2007-06-26	2007-06-26	0.04	0.092	0.179	0.857	1.49	0.41	17971	17945	99.855				7.5	12.9	28.1	118.8	242.8	678	651	0.0657	0.5558	0.3085		0.0598	0.0562	0.7188	0.2025	0.0019	0.0207	0.0635		0.1265	0.81	0.0538	0.4027	0.2196	0.32	0.444	0.997	31.1	39.76	31.2	39.5	11.1	19.03	11.03	46	234	0.43	7.5	47.84	1.176	0.805	0.2176	0.0069	0.478	0.729	0.0119	0.674	0.671			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Low flow gauge with flat-V weir in a rural catchment.	Flat-V weir, 4m wide. In summer 1984 the weir crest was lowered for land drainage requirements.	Low flow gauge, subject to drowning. High flows should be treated with caution. Theoretical rating. The modular limit was reduced when the weir crest was lowered in 1984.		Low-lying, rural catchment draining from west of the Yorkshire Wolds.	Significant agricultural abstractions in summer.
27047	Snaizeholme Beck at Low Houses	10.2	SD8330988292	383309.0	488292.0	54°17'23.9182"N 2°15'28.4824"W	54.28998	-2.25791	Snaizeholme Beck	Low Houses	260.0	EA-Y	F2290	27	1966-06-01		FV		7.0	36.1	true	false	false	false	false	false	true	true	false	true	false	false	true	N	1966-06-01	2023-09-30	0.565	0.007	1995-08-22	2010-06-28	14.1	2015-12-05	2015-12-05	0.022	0.09	0.194	1.58	2.39	0.18	20941	20481	97.803				267.7	307.3	431.3	580.4	666.9	1775	1729	0.1394		0.845	0.013		0.1633		0.3524	0.4843			1.0				0.0306	0.2771	0.62	0.308	0.978	202.7	51.16	55.4	74.1	11.9	7.29	3.79	440	324	0.34	268.1	11.35	0.286	0.711	0.0205	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Concrete flat-V weir in a steep, remote Pennine catchment.	Concrete flat-V weir replaced (in 1985) a limited capacity, wooden trapezoidal flume (installed late-1960s); structurefull now 0.95m.	Bypassing now less common but still overtops structure several times per year. Also goes non-modular.	Notable January 1995 peak caused by 80-100mm storm. Flows level off 20/12/10 to 27/12/10 when the river froze, data marked as suspect.	Wet, steep, remote catchment in the Pennines developed mainly on Carboniferous Limestone; some Millstone Grit on south-east boundary. Land use is mostly rough grazing. A habitat restoration project affecting a large proportion of the catchment began in 2023.	Flashy, natural regime. Systematic underestimation of rainfall (catch of ground-flush gauge exceeded standard raingauge by >10%) may contribute to unrealistic 'loss'. Also possibility of minor increase in runoff due to spring water deriving from outside the topographical catchment (see geology).
27048	Derwent at West Ayton	127.0	SE9887184988	498871.0	484988.0	54°15'03.7115"N 0°29'02.4176"W	54.25103	-0.484	Derwent	West Ayton	34.2	EA-Y	F2708	27	1972-01-01		TP		7.2	75.0	true	false	false	false	false	false	false	true	false	false	false	false	false	PG	1967-01-01	2023-09-30	0.5	0.0	1976-06-25	2022-10-19	5.1	2004-01-05	2004-01-05	0.032	0.219	0.36	1.12	1.39	0.7	20727	19773	95.397				31.6	89.8	173.3	238.9	295.7	845	841	0.3873	0.1877	0.2376	0.1812	0.0049	0.464	0.0892	0.2748	0.1693	0.0023		0.7423	0.2577		0.013	0.0054	0.0329	0.4	0.471	0.999	121.3	37.34	36.0	47.4	10.9	29.31	16.8	168	150	0.22	31.6	127.48	0.267	0.772	0.0246	0.0014			0.0009					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound thin-plate weir. Flows diverted to the Sea Cut (measured at 27033) at high flows.	Compound thin-plate weir, 11m wide in total, central notch is 3m wide.	Large drop over weir should exclude drowning. Theoretical daily and peak flow rating with check gaugings. Flood Studies Report grade A1.	Various periods of missing data throughout 2010 and 2011 a result of issues with the stilling well and a bank collapse. Missing data caused by silting also occurred during 2013 and 2014. Periods of missing data during 2019/2020 due to issues with the stilling well and sensor.	Jurassic Sandstone, Limestone and Shales. Predominantly rural catchment with substantial (just under half) forest cover. No known catchment changes.	Catchment contains swallow holes; significant losses between 27048 and a nearby u/s monitoring site (Forge Valley). Flow from 70% of the catchment area can be diverted to the Sea Cut at a diversion structure approx 5km upstream (measured at 27033). Flow can drop suddenly when the diversion structure is operated and peak flows are not representative of the full catchment response as a result. Normal operation is for the sluice to be open and all flow to pass down the Derwent.
27049	Rye at Ness	238.7	SE6943979196	469439.0	479196.0	54°12'13.7459"N 0°56'13.0834"W	54.20382	-0.93697	Rye	Ness	25.6	EA-Y	F2505	27	1974-01-01		FV			8.0	true	true	true	true	false	false	false	true	false	true	true	false	true	GN	1974-08-07	2023-09-30	3.554	0.497	1990-09-15	1990-09-15	58.0	1999-03-07	1999-03-07	0.808	1.64	2.58	7.06	9.29	0.68	17952	17940	99.933	1974-08-07		35.907	27.2	89.3	227.2	346.4	453.2	877	839	0.1823	0.2098	0.3135	0.2555	0.0202	0.1748	0.2022	0.3476	0.2728	0.0025		0.7015	0.2985			0.1111	0.0105	0.34	0.586	0.999	118.0	29.88	34.5	45.3	10.6	50.3	30.97	223	133	0.18	27.2	237.6	0.47	0.552	0.0386	0.0016			0.0029					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir on the River Ness in a rural catchment.	Flat-V weir, 12m wide. Station added to peak flows dataset in August 2021 (WINFAP Files v10).	Flat V weir subject to drowning below QMED, some out of bank flow but no by-passing. Theoretical rating amended by hydraulic modelling to cover non-modular flow range.	June 2005 peak estimated at 75 cumecs using hydraulic model.	Geology: Jurassic Limestone, clays and sandstones. Predominantly rural catchment with moorland headwaters and arable in lower valleys.	Significant groundwater abstractions.
27051	Crimple at Burn Bridge	8.1	SE2838651880	428386.0	451880.0	53°57'44.0265"N 1°34'07.8409"W	53.96223	-1.56884	Crimple	Burn Bridge	112.0	EA-Y	F2120	27	1972-01-01		FV		5.0	54.0	true	true	true	true	false	false	true	true	true	true	true	false	true	N	1972-01-21	2023-09-30	0.11	0.001	1995-07-27	1995-09-05	3.63	2012-09-24	2012-09-24	0.005	0.016	0.042	0.273	0.44	0.31	18881	18839	99.778	1972-01-21		4.564	110.2	133.6	171.1	218.8	243.1	862	855	0.0877	0.0728	0.8159		0.022	0.0339	0.0324	0.923	0.0039	0.0068		1.0					0.5127	0.34	0.309	1.0	62.9	40.77	37.7	45.7	12.8	5.27	2.58	174	84	0.4	110.2	8.17	0.145	0.714	0.0133	0.0015			0.0058	0.333	0.899			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir in a rural catchment with near-natural, flashy flow regime.	Flat-V weir (3.5m wide) opened in 1972 near site of masonry weir. No cableway. Original purpose was for water balance studies by Leeds University. Subcatchment flows have also been measured by Leeds University.	Flat V weir, 3.5m wide and design depth 0.175m (height difference from edge to centre). Wingwall top at 0.97m stage, overtops in very high flows and structure thought to drown in large floods. No bypassing and theoretical rating thought to give a good representation of flow throughout the range. Original structure had wooden wingwalls and may have suffered some structural leakage, these were replaced with concrete blocks in 1999. Level measurement by primary and secondary shaft encoders with backup data logger. Limited check gaugings because of access time and flashy response.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Carboniferous Millstone Grit sequence Shales and Grits cover three-quarters of the catchment, with the remaining quarter covered by shales, grits and 'Harrogate roadstones' of the Carboniferous Yoredale sequence. Small rural catchment, mainly used for pasture. No known catchment changes.	Flashy flow regime in catchment headwaters. No known artificial influences.
27052	Whitting at Sheepbridge	50.2	SK3763874771	437638.0	374771.0	53°16'06.9658"N 1°26'13.6602"W	53.2686	-1.43713	Whitting	Sheepbridge	70.3	EA-Y	F0220	27	1976-01-01		C			27.0	true	true	false	true	false	false	false	false	false	true	false	false	true	SE	1976-07-01	2023-09-30	0.799	0.109	1976-09-04	1976-09-05	31.2	2007-06-25	2007-06-25	0.17	0.275	0.426	1.777	2.686	0.5	17258	17219	99.774	1976-06-03		15.978	70.8	112.2	177.2	273.8	392.2	824	834	0.1246	0.2224	0.4019	0.028	0.219	0.1301	0.1901	0.4732	0.0566	0.1488		0.0017		0.9983		0.0182	0.003	0.38	0.536	0.995	91.6	25.12	34.9	44.3	10.5	12.45	6.57	182	113	0.27	71.0	54.27	0.217	0.734	0.0232	0.0892	0.754	0.895	0.1058	0.847	0.906	1975		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir in a confined channel with no known bypassing.	Crump weir, 5.98m wide. No cableway. Confined in a straight concrete channel between road and railway embankments (3m high walls for 200m) in an industrialised valley. Station is 500m downstream of confluence of River Drone with Barlow Brook.	No known bypassing. Single daily and peak flow rating applied across period of record, developed from theoretical Crump rating with current meter gauging.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Geology: Lower Coal Measure Standstones and Shales. Broad, gentle syncline is centred almost East West, along Barlow Beck. Mixed agriculture with moorland headwaters, significant urban development and industrialised valleys. Declining influence of coal mining industry since mine closures around 1920. There are numerous abandoned coal workings.	Estimated 4.3% of catchment drains through Crowhole Reservoir. Dronfield Dam flood storage reservoir approximately 6km upstream may have some impact on flood flows. Sewage effluent returns.
27053	Nidd at Birstwith	217.6	SE2300760316	423007.0	460316.0	54°02'17.9304"N 1°39'00.6909"W	54.03831	-1.65019	Nidd	Birstwith	67.4	EA-Y	F2106	27	1975-01-01		VA			9.9	true	true	true	true	false	false	false	true	false	false	false	false	false	SRP	1977-01-25	2023-09-30	5.076	0.461	1984-08-21	1984-08-21	121.0	2022-02-20	2022-02-20	0.857	1.44	2.52	12.2	16.7	0.45	17050	17050	100.0	1975-03-13		98.787	65.1	153.1	320.5	488.6	702.6	1206	1218	0.0669	0.0164	0.5624	0.3147	0.0137	0.058	0.01	0.4178	0.4963	0.0076		1.0				0.153	0.1066	0.53	0.357	0.913	114.0	45.34	42.3	54.8	11.3	39.48	20.44	320	99	0.23	65.4	219.31	0.472	0.728	0.0291	0.0015			0.0039			1975		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with a riffle control downstream. Catchment heavily reservoired.	Velocity area station approximately 17m wide. Riffle control 50m d/s, may be subject to erosion as the bed is rocky and unstable.	Level measurement began with a pressure recorder, then updated to a float well when the hut was constructed in Nov 1976. There is some suspicion that a downstream gravel shoal has moved, possibly on more than one occasion, altering the stage-discharge relationship. Rated by current meter from the bridge at the gauging section (September 2012). Daily flow rating revised in 1999 to account for a change in channel dimensions caused by the 1991 flood. Rating reviewed again in 2014 producing two new ratings pre and post 2009 flood event. Four peak flow ratings across the period of record. Station will need regular re-rating due to shifting control. Good fit to available gaugings though only two above QMED.	Daily flows reworked after a flood in 1991 changed channel dimensions. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Geology: mostly Millstone Grit, Sandstones and Shales, with some small inliers of Carboniferous Limestone in Upper Nidderdale. An east-west fault runs along the line of the river. Rural catchment, predominantly grassland, moorland headwaters. No known catchment changes.	Heavily reservoired catchment. Some losses to public water supply from Angram / Scar House reservoirs. Gouthwaite compensation reservoir has a substantial effect on flows and is used to maintain dry weather flows.
27054	Hodge Beck at Cherry Farm	37.1	SE6515190255	465151.0	490255.0	54°18'13.5189"N 1°00'01.0550"W	54.30376	-1.00029	Hodge Beck	Cherry Farm	37.6	EA-Y	F2570	27	1973-01-01		FV		3.6	16.7	true	false	false	false	false	false	false	true	false	false	true	false	false	N	1974-01-01	2023-09-30	0.663	0.086	1976-08-23	1976-08-26	12.0	2000-10-30	2000-10-30	0.135	0.253	0.408	1.39	2.06	0.53	18170	18049	99.334				97.6	178.6	273.3	403.5	451.5	982	946	0.1187	0.0264	0.3207	0.5052	0.0133	0.1188	0.0144	0.3455	0.5206	0.0006		0.755	0.245			0.1577		0.4	0.355	1.0	131.3	48.41	34.5	45.6	10.3	15.73	7.55	281	173	0.26	97.6	37.43	0.147	0.809	0.0116	0.0013			0.0003					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Limited range flat-V weir in a rural catchment.	Limited range flat-V weir, 6m wide. Replaced the gauge upstream 27010 (Bransdale).	Known to drown below QMED, introducing significant uncertainty into the high flow range. Theoretical rating.	Extreme flood of June 2005 (peak estimated using a hydraulic model: 80 cumecs) substantially exceeded previous maxima.	Rural catchment. Geology mainly shales and sandstones.	Flows unaffected by artificial influences.
27055	Rye at Broadway Foot	131.7	SE5599788365	455997.0	488365.0	54°17'16.2770"N 1°08'28.6865"W	54.28785	-1.1413	Rye	Broadway Foot	37.7	EA-Y	F2508	27	1974-01-01		C US			22.3	true	true	true	true	false	false	false	true	false	false	false	false	false	N	1974-09-01	2023-09-30	2.126	0.363	1989-09-30	1989-09-30	69.0	1999-03-07	1999-03-07	0.527	0.958	1.44	4.2	5.82	0.61	17927	17243	96.185	1974-09-01		37.983	95.6	162.8	274.1	369.3	453.2	938	882	0.1358	0.0396	0.3585	0.435	0.0103	0.1224	0.0272	0.3846	0.465	0.0006		0.6338	0.3662			0.0933	0.0001	0.34	0.422	0.998	144.0	43.18	35.7	47.2	10.4	22.13	11.78	268	190	0.16	95.6	131.29	0.198	0.727	0.0145	0.0007			0.0005			1976..2006	2006-07-12..2007-07-06	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Limited range Crump weir with ultrasonic gauge for high flows.	Limited range Crump profile weir, 15m wide with 0.4m high walls. Ultrasonic gauge installed in 2003 to improve measurement of non-modular flows. Station severely damaged by extreme flood in June 2005 - ultrasonics washed away. Wingwall extended and ultrasonic replaced in July 2007. D/s levels are measured.	Wing walls were rebuilt and raised to 1.4m in 2002. No cableway for check gauging but ADCP is now used at high flows. One peak flow rating across period of record based on ultrasonic data and gaugings up to to 50 cumecs with hydraulic modelled limbs above this. Very good agreement with ultrasonic gauge well beyond QMED.	Earlier flows may have small under-estimation, although still well contained within banks up to 2.3m stage, so minimal bypass apart from the June 2005 extreme flood. Hydraulic model estimated extreme flood peak in June 2005 to be 384 cumecs (representing a monumental event). Data missing June-October 2005 and during reconstruction (19-06-2006 to 06-07-2007). Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly upland catchment draining the Cleveland Hills. Geology of Jurassic beds of Oolite and Lias, dipping southwards. The Liassic beds (mostly shales) form an intier in the upper part of the catchment with the sandstones and shales of the overlying Estuarine series forming the high ground around the catchment. No known catchment changes.	Responsive catchment. Sensibly natural regime, no known artificial influences.
27056	Pickering Beck at Ings Bridge	68.6	SE7910681952	479106.0	481952.0	54°13'37.8613"N 0°47'17.0803"W	54.22718	-0.78808	Pickering Beck	Ings Bridge	28.1	EA-Y	F2515	27	1974-01-01		C		4.0	21.2	true	false	false	false	false	false	false	true	false	true	false	false	true	N	1974-10-01	2023-09-30	0.834	0.136	1976-08-24	1976-08-24	35.0	1999-03-06	1999-03-06	0.226	0.394	0.565	1.48	2.02	0.67	17897	17808	99.503				26.6	80.1	168.0	245.3	295.7	846	834	0.2486	0.2594	0.303	0.1558	0.0248	0.2493	0.3072	0.2771	0.1528	0.0137		0.6972	0.3028		0.0123	0.0583		0.4	0.691	1.0	114.3	19.95	33.8	45.5	10.7	26.01	14.15	166	179	0.34	26.6	67.56	0.356	0.668	0.0374	0.0064	0.673	0.32	0.0083	0.873	0.265			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Limited range Crump weir in a catchment draining parts of the North York Moors.	Limited range Crump profile weir, 7m wide. Removed from peak flows dataset in February 2018 (WINFAP Files v6).	Channel control at medium and high flows as weir is fully drowned. Low modular limit, higher flows are only approximate; check gaugings to QMED. Out of bank flow at high stages, with significant floodplain storage downstream causing variable backwater influence at the weir. Surcharging bridge u/s at high flows. Theoretical daily and peak flow rating up to modular limit. Rating does not allow for non-modular flow reduction or variable backwater and high flow data considered unreliable. Level gauge upstream in Pickering has been calibrated for flow measurement and high flow data from this gauge can be used with more confidence. No allowance for drowning and the few higher gaugings lie off the rating.		Catchment drains parts of the North York Moors. Geology: mostly grits and Limestones of the Corallian. Mixed rural land use; moorland in headwaters, arable in lower catchment; extensive forestry. No known catchment changes.	No known artificial influences.
27057	Seven at Normanby	121.6	SE7358182152	473581.0	482152.0	54°13'47.2906"N 0°52'21.9326"W	54.2298	-0.87276	Seven	Normanby	28.5	EA-Y	F2540	27	1974-01-01		C		6.1	22.3	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1974-07-01	2023-09-30	1.6	0.02	2022-08-14	2022-08-14	47.9	2007-06-25	2007-06-25	0.179	0.439	0.823	3.5	5.33	0.43	17989	17837	99.155				27.5	65.3	193.4	342.5	433.0	901	876	0.1845	0.1467	0.2862	0.3465	0.0217	0.1899	0.1678	0.2972	0.3417	0.0032		0.6905	0.3095			0.1046	0.0199	0.4	0.429	0.997	99.6	41.26	32.1	43.7	10.2	30.89	17.37	201	178	0.34	29.3	122.58	0.684	0.415	0.051	0.0028			0.0033					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Limited range Crump profile weir with a low modular limit in a rural catchment with a significant area of forestry.	Limited range Crump profile weir, 8m wide.	Low modular limit. Drowns well before QMED so high flows are of limited precision. Theoretical rating.	Magnitude of August 2002 flood under review, but undoubtedly exceptional - triggered by > 100mm storm.	Geology: Jurassic Limestone, shales and sandstones. Rural catchment with moorland headwaters. Contains significant areas of forestry.	Loss of water underground to the adjacent River Dove (27042) has significant impact on summer baseflow.
27058	Riccal at Crook House Farm	57.6	SE6613681011	466136.0	481011.0	54°13'14.0293"N 0°59'13.9065"W	54.22056	-0.9872	Riccal	Crook House Farm	29.5	EA-Y	F2580	27	1974-01-01	2007-11-28	FV		3.5	15.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1974-12-01	2007-11-27	0.437	0.147	1996-10-02	1996-10-02	15.9	2000-10-30	2000-10-30	0.185	0.228	0.265	0.844	1.21	0.65	12050	12006	99.635				35.1	57.4	206.4	317.4	418.5	856	859	0.1756	0.2241	0.2325	0.3427	0.016	0.1779	0.2354	0.2491	0.3371	0.0005		0.7887	0.2113			0.1688	0.0409	0.38	0.511	1.0	94.3	34.4	32.5	42.8	10.3	22.36	12.9	198	169	0.41	35.3	39.8	0.404	0.395	0.0443	0.0033			0.002					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Limited range flat-V weir, replaced by downstream site at Nunnington. Station closed November 2007.	Limited range flat-V weir, 4m wide. Site replaced by new ultrasonic station 1.3km downstream 27093 (Nunnington) which opened in 2005. 27058 closed November 2007.	Low modular limit, drowns well below QMED so higher flows are only approximate. Theoretical rating.	Magnitude of Aug 2002 flood is under review, but was undoubtedly exceptional - triggered by > 100mm storm.	Small, linear catchment draining the North York Moors. Geology: shales, sandstones and limestones. Moorland headwaters, arable in lower catchment, significant forestry.
27059	Laver at Ripon Laver Weir	87.5	SE3029470949	430294.0	470949.0	54°08'00.6013"N 1°32'16.3266"W	54.1335	-1.53787	Laver	Ripon Laver Weir	29.6	EA-Y	F2220	27	1977-01-01		C		39.1	49.0	true	true	true	true	false	false	false	true	false	false	false	false	false	SP	1977-10-11	2023-09-30	1.115	0.045	1990-09-14	1995-08-18	30.2	2007-06-15	2007-06-15	0.118	0.285	0.515	2.61	4.13	0.43	16791	16769	99.869	1977-10-11		22.023	29.5	89.6	177.1	333.3	412.8	887	912	0.1155	0.1226	0.4898	0.2402	0.0261	0.1102	0.0992	0.5071	0.2668	0.0148	0.1082	0.889		0.0028	0.0082	0.0093	0.4959	0.36	0.42	0.982	64.4	39.83	40.0	48.3	11.7	26.31	14.88	195	93	0.4	29.5	78.44	0.461	0.767	0.0452	0.0036			0.0097	0.72	0.408			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir with a high modular limit in a predominately rural catchment.	Crump profile weir, 10m wide. Insensitive at low flows, but a notch in the stilling basin toe wall could be used for very low flow measurement. Fish pass with baffles on downstream face of weir installed September 2015.	High modular limit, subject to bypassing, but all but highest recorded peaks contained within wingwalls. There is no cableway for gauging high flows, ADCP can now be used but right bank access is difficult; d/s levels are not measured. Theoretical daily and peak flow rating applied across period of record and confirmed by hydraulic modelling.	Anomalous data 17/09/2015-30/09/2015 removed, caused by fish pass installation which affected levels and derived flows. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	A predominantly rural catchment below Pennine moorland headwaters. Geology: Mostly Carboniferous Millstone Grit and Magnesian Limestone, overlain by Boulder Clay cover in lower (eastern) half of catchment. There are some swallow holes in the lower part of the catchment. Arable in valley bottoms. No known catchment changes.	Surface and groundwater abstractions significantly reduce runoff. Flood alleviation scheme constructed in 2012 includes upstream storage reservoir in the Laver catchment. This is designed to reduce peak flows above approximately 20 cumecs.
27060	Kyle at Newton On Ouse	167.6	SE5098860295	450988.0	460295.0	54°02'10.0488"N 1°13'22.7219"W	54.03612	-1.22298	Kyle	Newton On Ouse	5.7	EA-Y	F2480	27	1979-05-03		FV			27.0	true	false	false	false	false	false	false	true	false	false	false	false	false	G	1979-05-03	2023-09-30	13.078	0.067	1995-08-05	1995-08-05	260.0	2015-12-29	2015-12-29	0.125	0.315	0.729	46.5	78.1	0.12	16222	16135	99.464				8.0	13.8	20.5	47.6	157.5	637	620	0.0474	0.6592	0.2337	0.0	0.0396	0.0398	0.6141	0.3224	0.0052	0.018	0.8428	0.034	0.1232		0.0367	0.8354	0.1239	0.34	0.516	0.995	14.0	32.66	29.3	38.8	11.1	24.37	13.9	27	211	0.33	8.0	166.94	1.722	0.884	0.2878	0.0083	0.532	0.994	0.0104	0.746	1.06			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir gauging a flat rural catchment near York.	Flat V gauging weir, built 1978, gauging rural catchment close to confluence with the River Ouse. Concrete flat V weir 6m wide with 1:10 side slopes and vertical sheet-piled wing walls. Instrument kiosk on left bank with upstream and downstream level recorders in stilling wells. Eel tiles added to weir face in 2014.	Weir drowns in high flows due to backwater from the Ouse confluence a short distance downstream, flows above 1.6 m3/s should be discounted. Theoretical modular weir rating supported by check gaugings.	Missing data 02/07/2014 - 13/07/2014 due to installation of eel tiles, unable to infill gap.	Flat, rural catchment draining part of Vale of York. Bedrock geology is primarily Sandstones and mudstones with superficial deposits of sands and gravels, moderate to high permeability.	Relatively slow response from a flat, moderately permeable, agricultural catchment. Some artificial influences from agricultural abstraction and sewage treatment works discharges, slight net increase to natural flows.
27061	Colne at Longroyd Bridge	72.3	SE1364416110	413644.0	416110.0	53°38'28.7822"N 1°47'42.3700"W	53.64133	-1.7951	Colne	Longroyd Bridge	72.6	EA-Y	F1104	27	1978-01-01		FV		22.1	13.0	true	false	false	false	false	false	false	false	false	false	false	false	false	SPGI	1978-11-01	2023-09-30	1.469	0.107	1984-08-25	1984-08-26	29.9	2022-02-20	2022-02-20	0.341	0.525	0.749	3.22	4.95	0.44	16405	16396	99.945				72.9	160.0	298.6	437.6	516.1	1293	1300	0.0982	0.0167	0.4794	0.2543	0.1176	0.051	0.0426	0.399	0.3598	0.1298		0.9538		0.0462		0.3222		0.57	0.522	0.907	134.9	31.75	47.3	63.5	11.6	19.88	11.17	298	84	0.23	73.2	69.72	0.697	0.733	0.0257	0.069	0.69	0.379	0.0755	0.743	0.389			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Limited range flat-V weir on the River Colne. Lower catchment is urbanised (Huddersfield).	Limited range flat-V weir, 12m wide.	Out-of-bank flows occur before QMED, higher flows of limited accuracy. Theoretical rating, checked by low flow gaugings.		Geology: Millstone Grit. Moorland headwaters with urban and industrial development in the lower catchment.	Reservoirs in catchment.
27062	Nidd at Skip Bridge	516.0	SE4824756080	448247.0	456080.0	53°59'54.6287"N 1°15'55.7743"W	53.99851	-1.26549	Nidd	Skip Bridge	8.2	EA-Y	F2102	27	1979-01-01		US			6.0	true	true	true	true	false	false	false	true	false	false	true	false	false	SRPE	1979-05-01	2023-09-30	8.548	1.002	1995-08-24	1995-08-24	183.2	1979-12-27	1979-12-27	1.62	2.792	4.544	19.79	29.3	0.49	16224	14995	92.425	1979-05-01		92.391	10.3	29.5	144.5	413.6	702.6	951	945	0.0832	0.2151	0.4847	0.1341	0.0649	0.0676	0.2033	0.4526	0.2149	0.0547	0.1958	0.7547		0.0495	0.0287	0.0904	0.3761	0.36	0.416	0.95	71.8	39.36	38.3	48.3	11.4	91.82	51.02	185	91	0.22	10.3	523.47	1.131	0.579	0.1024	0.0244	0.777	0.749	0.0308	0.847	0.767	2001..2017		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Full range ultrasonic station since 1999. Previously a flat-V weir, intended to measure low flows to complement high flow measurement at 27001.	Full-range multi-path ultrasonic operating since 1999, replaced previous flat-V weir. The weir was for low flow measurement in conjunction with high flow data from Hunsingore (27001), which is insensitive at low flows. The weir was removed in 1999 and station converted to ultrasonic to improve fish passage. Ultrasonic gauge originally only set to measure up to 100 cumecs, but range extended after June 2000 event (and before October 2000 event) to cover full range. Station suffered problems from siltation affecting low flows, until the trapezoidal channel was built in 2017/18.	Crossed-path multi-path ultrasonic in trapezoidal channel (installed 2018), replaced previous two-stage channel configuration (from 2001), rectangular channel configuration (from 1999) and earlier Flat V weir (12m wide, from 1979). Weir suffered from variable backwater from the Ouse downstream. Original ultrasonic gauge suffered from siltation, mainly affected low flows which are thought to be too high as a result. Section modified and downstream weir removed to reduce sediment deposition (by increasing velocity) but only partially successful. Full rebuild, converting channel to a trapezoid in 2017/18 appears to have resolved this problem. Significant attenuation of peak flows between Hunsingore and Skip Bridge because of flood plain inundation. Flow measured directly by ultrasonic gauge, no rating available since weir removal. Several gaugings >75 cumecs give close agreement with ultrasonic gauge flow. Level measurement by pressure transducer.	Original Flat V weir rating modified to try to take account of drowning, flows from 1979 reprocessed and high flows substantially reduced. High flows from this period (1979-1999) are still considered unsuitable for flood estimation and are not presented with the peak flows, only ultrasonic peak flow data is presented (from 1999). Low flow data 1999-2018 considered less reliable due to impact of sediment deposition in measuring section, several data gaps in this period also a result of sediment problems. Significant gaps 11/2001 to 05/2002 and 05/2017 to 09/2018 due to site refurbishment. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Geology: Carboniferous Millstone Grits, Permian Marls and Triassic Sandstones. Predominantly rural, rugged in headwaters. No known catchment changes.	Heavily reservoired headwaters of the Nidd valley significantly affect flows; Gouthwaite Reservoir outflows especially significant in low flow conditions.
27063	Dibb at Grimwith Reservoir	25.5	SE0577763931	405777.0	463931.0	54°04'16.6114"N 1°54'47.5652"W	54.07128	-1.91321	Dibb	Grimwith Reservoir	239.3	EA-Y	F1955	27	1981-01-01		FV		77.3	54.0	true	false	false	false	false	false	false	false	false	false	false	false	false	SR	1980-12-01	2023-09-30	0.82	0.0	1983-08-20	1991-06-29	16.92	1991-02-23	1991-02-23	0.016	0.203	0.707	1.495	1.95	0.37	15644	15297	97.782				241.7	305.7	404.0	508.2	553.0	1330	1357	0.0133	0.003	0.1508	0.7732	0.0016	0.0042	0.0008	0.0791	0.8594	0.0022		1.0				0.7283	0.0674	0.62	0.258	0.759	79.8	56.49	41.3	52.6	11.4	8.23	4.1	405	187	0.5	241.7	25.7	0.241	1.05	0.0217	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir on the River Dibb measuring outflows from Grimwith Reservoir.	Flat-V weir measuring outflows from Grimwith Reservoir.				Outflows from Grimwith Reservoir; very artificial regime with large export of water for public supply.
27064	Went at Walden Stubbs	83.7	SE5506416309	455064.0	416309.0	53°38'25.4655"N 1°10'07.0164"W	53.64041	-1.16862	Went	Walden Stubbs	5.7	EA-Y	F0920	27	1979-01-01		FV		11.3	16.0	true	false	false	false	false	false	false	true	false	false	false	false	false	EI	1979-10-19	2023-09-30	0.576	0.098	1992-06-27	1992-06-27	22.1	2007-06-26	2007-06-26	0.165	0.25	0.333	1.02	1.67	0.57	16053	16042	99.931				8.1	26.4	49.2	69.8	94.8	621	611	0.0689	0.6718	0.1283	0.0001	0.1197	0.0462	0.7231	0.1309	0.0062	0.0905	0.1845			0.8155		0.0121	0.0065	0.32	0.616	0.975	34.2	21.48	31.0	40.9	10.8	22.57	13.44	49	66	0.16	8.1	86.34	0.733	0.983	0.108	0.0428	0.803	1.205	0.0509	0.822	1.169			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir on the River Went in a low lying, mainly arable, catchment.	Flat-V weir, 7m wide, 1:10 cross-slope.	All but highest flows contained. Weir becomes non-modular before QMED, introducing significant uncertainty at high flows. New rating applied to period of record in 2015 revises the flow to modular limit and provides a higher flow estimate between 0.34 and 0.808m stage, followed by a lower estimate up to bankfull.	November 2000 was undoubtedly an exceptional event, but the magnitude may be suspect. Period of record data reprocessed in 2015 after a rating change.	Geology comprises shales, sandstones and limestones. Low-lying, predominantly arable catchment with isolated built-up areas.	Pumped minewater discharge significant prior to 1994 (now ceased).
27065	Holme at Huddersfield Queens Mill	97.4	SE1422915754	414229.0	415754.0	53°38'17.2074"N 1°47'10.5742"W	53.63811	-1.78627	Holme	Huddersfield Queens Mill	68.1	EA-Y	F1003	27	1979-01-01		US		6.5	9.7	true	true	false	true	false	false	false	true	false	false	false	false	false	SRI	1979-11-16	2023-09-30	2.188	0.271	1984-08-26	1984-08-26	73.5	2022-02-20	2022-02-20	0.488	0.81	1.22	4.77	7.04	0.5	16025	16016	99.944	1979-11-16		43.838	68.7	149.8	262.3	423.2	580.3	1232	1237	0.1981	0.0416	0.5041	0.1298	0.104	0.1276	0.069	0.5027	0.1882	0.1044		0.8165		0.1835		0.08	0.0013	0.57	0.605	0.941	134.2	25.07	47.3	64.5	11.4	20.73	12.34	276	40	0.32	68.7	100.7	0.767	0.734	0.0269	0.038	0.605	0.575	0.0498	0.729	0.671			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir. Holme Bridge reservoir group in the headwaters affect flow regime.	Flat-V weir, 11m wide, 1:10 cross-slope.	Weir drowns at high flows. Gauged to within 40% of QMED and flow is well contained above this, however there is uncertainty in the magnitude of the highest flows beyond the modular limit. No known by-passing.		Predominantly Millstone Grit. Moorland headwaters; urban development and significant forest cover in the lower catchment.	Reservoirs in headwaters - compensation releases from Holme Bridge group affects flow regime. Net export of water from the catchment.
27066	Blackburn Brook at Ashlowes	42.8	SK3927891355	439278.0	391355.0	53°25'03.1543"N 1°24'37.7574"W	53.41754	-1.41049	Blackburn Brook	Ashlowes	33.3	EA-Y	F0660	27	1984-01-01	2007-06-25	FV			40.0	true	false	false	false	false	false	false	false	false	false	false	false	false	SGI	1981-01-08	2007-06-25	0.317	0.008	1981-08-02	1981-08-02	33.9	2007-06-25	2007-06-25	0.033	0.084	0.146	0.735	1.14	0.38	9665	9625	99.586				31.5	71.0	121.6	210.4	312.6	740	748	0.2529	0.1437	0.2442	0.0007	0.3488	0.1751	0.1618	0.3183	0.0116	0.3319				1.0				0.38	0.487	0.972	82.7	29.35	35.6	47.7	10.6	14.28	7.49	132	89	0.3	31.5	41.76	0.219	0.702	0.0226	0.1629	0.693	0.77	0.1706	0.874	0.817			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir on Blackburn Brook, catchment has large urban fraction. Station closed June 2007.	Flat-V weir. Station closed June 2007.	All flows contained but weir subject to drowning as a result of backing-up from the Don.	Flows assume modularity; overestimation can be considerable and as such the flow record is suspect.	Catchment developed largely on Carboniferous formations (Coal Measures). Mixed farming, significant woodland, large urban fraction (north Sheffield).	Urban stormwater drainage in lower part of the catchment.
27067	Sheaf at Highfield Road	49.1	SK3575586369	435755.0	386369.0	53°22'22.7193"N 1°27'50.6004"W	53.37298	-1.46406	Sheaf	Highfield Road	54.1	EA-Y	F0402	27	1984-01-01		FVUS			23.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1981-01-09	2023-09-30	0.58	0.044	2003-09-05	2003-09-05	29.59	1991-12-21	1991-12-21	0.082	0.178	0.316	1.29	1.917	0.45	15605	15574	99.801				58.1	108.0	190.0	345.9	434.6	860	886	0.1734	0.062	0.247	0.0964	0.4149	0.1574	0.0383	0.3184	0.1193	0.366		0.1858		0.8142		0.0116	0.0098	0.38	0.401	0.982	97.2	35.37	37.2	49.6	10.5	14.72	7.97	205	79	0.31	58.1	49.09	0.239	0.626	0.0236	0.1716	0.754	0.594	0.2598	0.921	0.624			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir in a steep catchment with substantial urban development.	Flat-V weir, 1:10 cross-slope, for low flow measurement. Ultrasonic installed in 2000 for high flow measurement, but performance up to 2007 was poor. Ongoing investigations (2016-) into gauge level sensor.	Structure drowns before QMED as a result of backing-up from the Sheaf Screen at the culvert entrance 100m downstream. There are concerns about the gauge level sensor performance 2016-present.	Small drop in flows in May 2017 caused by clearing of screens downstream from the station.	Steep catchment developed on Carboniferous formations: Millstone Grit and Coal Measures. Very substantial urban development (Sheffield) below Pennine headwaters.	No reservoirs in catchment.
27068	Ryburn at Ripponden	33.0	SE0354718938	403547.0	418938.0	53°40'00.8780"N 1°56'52.0558"W	53.66691	-1.94779	Ryburn	Ripponden	96.8	EA-Y	F1240	27	1984-01-01		FV			21.0	true	false	false	false	false	false	false	false	false	false	false	false	false	SP	1981-03-31	2023-09-30	0.636	0.101	1984-09-02	1996-03-10	16.68	2019-03-16	2019-03-16	0.203	0.258	0.314	1.331	2.19	0.49	15524	15431	99.401				132.2	240.9	344.2	416.9	482.4	1349	1367	0.0593	0.0074	0.4077	0.452	0.0207	0.035	0.0216	0.3295	0.5644	0.0194		1.0				0.5111		0.57	0.327	0.844	129.0	50.54	48.6	65.1	11.9	10.75	5.47	334	55	0.25	132.2	34.29	0.17	1.18	0.0154	0.0035	0.084	0.053	0.0058	0.592	0.264			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-v weir downstream of the confluence of two reservoired catchments.	Flat-V weir, 1:20 cross-slope. Located close to the confluence of two reservoired catchments - of limited hydrological value.	High flows are theoretical and cannot be checked.	Missing data over spring 2020.		Flow is mostly comprised of compensation releases from Booth Wood and Ryburn reservoirs.
27069	Wiske at Kirby Wiske	215.5	SE3757984363	437579.0	484363.0	54°15'12.8571"N 1°25'28.9625"W	54.25357	-1.42471	Wiske	Kirby Wiske	20.3	EA-Y	F2320	27	1984-01-01		FV		2.0	15.0	true	false	false	false	false	false	false	true	false	false	false	false	false	E	1980-03-25	2023-09-30	4.814	0.1	2022-08-30	2022-08-30	137.0	2012-09-26	2012-09-26	0.191	0.375	0.653	14.0	29.0	0.16	15895	15885	99.937				21.2	31.6	52.4	79.0	314.1	652	632	0.0419	0.5718	0.3366	0.0011	0.0424	0.0309	0.5662	0.3598	0.003	0.0389	0.474	0.0013	0.1159	0.4088	0.1622	0.0132	0.8222	0.34	0.401	0.996	27.2	37.66	29.3	36.7	10.4	49.25	21.78	56	253	0.15	21.2	213.14	1.054	0.9	0.1633	0.0172	0.694	0.679	0.0196	0.808	0.66			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir for low flow measurement on the River Wiske.	Flat-V weir. New station built 9km upstream (Viewly Bridge), an ultrasonic gauge for full range measurement, opened 2007. 27069 is continuing for low flow measurement.	Subject to severe drowning; backing-up from Swale (downstream weed growth can also affect flows). Reverse flows observed under high flow conditions. . This inadequacy results in unrealistic runoff volumes and a spurious water balance. Theoretical rating - modularity assumed. Flows above 2 cumecs should be treated with considerable caution - many will be greatly overestimated.		A low-lying, largely rural catchment mostly on Permian/Triassic formations (sandstones and mudstones), with extensive Drift cover.	Effluent returns and spray irrigation affect the flow regime.
27071	Swale at Crakehill	1363.0	SE4250373339	442503.0	473339.0	54°09'14.8218"N 1°21'02.5003"W	54.15412	-1.35069	Swale	Crakehill	12.0	EA-Y	F2302	27	1955-01-01		C VA			7.6	true	true	true	true	false	false	true	true	false	true	true	false	true	N	1955-11-01	2023-09-30	20.197	0.858	1959-09-27	1959-09-27	246.6	1963-03-07	1963-03-07	3.478	7.372	11.94	46.76	68.1	0.48	24806	24744	99.75	1980-05-29		161.926	14.6	31.4	104.1	464.1	714.3	872	835	0.0636	0.3516	0.4132	0.1245	0.0339	0.0527	0.3571	0.3727	0.1927	0.0225	0.3232	0.4855	0.1163	0.075	0.1543	0.1104	0.5751	0.38	0.436	0.994	66.9	39.86	34.4	43.7	10.8	116.15	56.05	182	116	0.1	14.7	1354.43	1.124	0.713	0.1193	0.009	0.548	0.713	0.013	0.742	0.749			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Data held against this station are a combined record for Leckby Topcliffe (27008) and Crakehill (27071). Catchment drains the North Yorkshire Dales and the Vale of York.	Crump profile weir at Crakehill (20m width) for low-moderate flows, with high flow calibration based on u/s cableway. Gaugings done using ARC-Boat. Weir was built in a new channel to the left of the natural one, and the river diverted into it. This station superseded the velocity area station at Leckby Topcliffe (27008) 3km u/s, which suffered from heavy weed growth and closed in 1980.	Weir at Crakehill often drowns before levels reach the top of the wing walls. Flood banks can be breached u/s (left and possibly the right bank); bypassing may be cause of poor agreement with check gaugings at high stages. Gauged almost to AMAX1. Three peak flow ratings across period of record, 1980-1990, 1990-2010, post 2010 to account for the change. Fish and eel pass installed late 2014, but have negligible impact on weir discharge. At Leckby Topcliffe, bypassing began at 6.15m over left bank, and rating changed in 1968 to account for downstream bank erosion.	Following statistical assessment of continuity, daily and peak flows held against this station are a combination of Leckby Topcliffe (27008) pre-1980 and Crakehill (27071) post-1980; POT thresholds prior to merge were 130.858 and 104 cumecs, respectively. Suspected overestimation of high flows at Leckby. Full period of record peak flow data reviewed at both sites, prior to merger, and released in October 2018 (WINFAP Files v7).	Catchment drains North Yorkshire Dales, lower catchment in the flat Vale of York. Mixed geology - mainly Limestones, Sandstones (especially below Richmond) and Shales; substantial superficial deposits, predominantly Boulder Clay. Moorland and grassland in headwaters, Vale of York has substantial arable cover. No known catchment changes.	Sensibly natural regime, flashy response. No known artificial influences recorded against either of the merged sites.
27072	Worth at Keighley	71.7	SE0636940866	406369.0	440866.0	53°51'50.3031"N 1°54'16.7008"W	53.86397	-1.90464	Worth	Keighley	96.5	EA-Y	F1403	27	1980-01-01		FV		7.2	13.1	true	false	false	false	false	false	false	false	false	false	false	false	false	SR	1980-12-17	2023-09-30	1.378	0.135	1984-08-19	1984-08-19	20.8	2015-12-26	2015-12-26	0.313	0.514	0.785	3.136	4.59	0.51	15628	15593	99.776				96.5	189.7	295.3	408.6	456.6	1217	1207	0.07	0.0244	0.474	0.3166	0.0948	0.0462	0.0114	0.4181	0.4181	0.0983		0.9965		0.0035	0.0016	0.3243	0.3686	0.57	0.364	0.946	117.4	43.72	39.7	54.9	10.7	15.4	8.38	295	68	0.24	96.5	71.16	0.337	0.912	0.0241	0.0378	0.678	0.362	0.0573	0.783	0.394			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Limited range flat-V weir in a steep catchment, regime sometimes influenced by compensation flows and mill operation.	Limited range flat-V weir, 1:10 cross-slope.	At higher flows the structure is substantially bypassed.		Steep Millstone Grit catchment draining peat moorland, boulder clay cover in lower catchment. Insignificant urban development just upstream of station.	A largely natural regime but reservoir storage (and compensation flows of 14 Mld) and mill operation can be influential.
27073	Brompton Beck at Snainton Ings	12.9	SE9362779462	493627.0	479462.0	54°12'08.5234"N 0°33'58.2618"W	54.20237	-0.56618	Brompton Beck	Snainton Ings	9.0	EA-Y	F2760	27	1984-01-01		C		3.0	90.0	true	true	true	true	false	false	true	true	false	true	false	false	true	GN	1981-02-13	2023-09-30	0.269	0.0	1990-10-08	1990-10-10	1.47	2012-11-30	2012-11-30	0.052	0.134	0.209	0.54	0.669	0.91	15570	15546	99.846	1981-02-13		0.812	21.1	22.7	63.9	189.1	222.2	717	721	0.05	0.7059	0.1848	0.0065	0.0528	0.023	0.8035	0.157		0.0153		0.6298	0.3702			0.3355		0.39	0.887	1.0	47.7	17.77	32.2	41.2	10.4	9.71	4.53	82	163	0.59	21.1	8.06	1.299	0.446	0.2373	0.0121	0.486	0.884	0.0079	0.463	0.879			gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir in a permeable catchment. Flow regime strongly dependent on groundwater contribution.	Formal Crump Weir, 5.5m wide, built over a drainage culvert. There is a concrete apron 3-4m u/s of the weir. A drain runs beneath the gauge, receiving drainage from low lying land adjacent to Brompton Beck.	Full range and modular. No drowning due to a large (>3m) d/s drop to the Derwent. Single theoretical peak flow rating applied across period of record. Gauged to within 25% of AMAX1, all flow contained within wing walls.	Artificial drop in flow in July 2003; cause unknown but upstream damming or abstraction likely, investigation failed to identify the cause. Gap in data Aug-Oct 1988, cause unknown. Gap Jul-Aug 2002, suspect data was deleted. Short gap Jun 2003 due to instrument fault. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A mainly permeable (Corallian) catchment, with Jurassic Calcareous grits in the upper part of the catchment, Alluvium in the Vale of Pickering overlying Kimmeridge clay. Rural, predominantly arable. Surface and groundwater catchments may differ considerably due to a large groundwater component to the catchment. No known catchment changes.	Stable and sensibly natural regime, although groundwater abstraction may influence the regime. The flow is largely dependent on flow from two Corallian Limestone springs in Brompton, augmented in wet weather by land drainage inflow.
27074	Spen Beck at Northorpe	46.3	SE2247621023	422476.0	421023.0	53°41'06.6609"N 1°39'40.1865"W	53.68518	-1.66116	Spen Beck	Northorpe	40.8	EA-Y	F1385	27	1982-06-01		C			39.0	true	false	false	false	false	false	false	true	false	false	false	false	false	E	1982-06-22	2023-09-30	0.568	0.068	2000-09-08	2000-09-08	18.4	2007-06-25	2007-06-25	0.103	0.22	0.378	1.165	1.73	0.53	15076	15071	99.967				44.1	75.7	133.1	203.9	295.9	817	792	0.1034	0.0592	0.4026	0.0019	0.4198	0.0222	0.1182	0.3921	0.0038	0.4616				1.0	0.0007		0.2336	0.39	0.426	0.973	65.8	31.65	34.0	46.1	10.4	16.3	8.56	137	145	0.29	44.1	45.82	0.413	0.761	0.0457	0.2037	0.749	0.993	0.2565	0.853	1.029			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir in a largely urban catchment.	Crump Weir.	Downstream recorder, but processed flows assume modularity; backing-up from the Calder causes occasional drowning.		A largely urban catchment developed mostly on Coal Measures.	Sewage effluent component evident on hydrograph but since beginning of 1999 artificial influences have been greatly reduced - closure of STWs and reduction of mine water discharges upstream; major impact on low flows and significant reduction in runoff.
27075	Bedale Beck at Leeming	160.3	SE3062190249	430621.0	490249.0	54°18'24.9499"N 1°31'51.2524"W	54.30693	-1.5309	Bedale Beck	Leeming	23.8	EA-Y	F2330	27	1983-04-21		FV		3.0	12.6	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1983-04-24	2023-09-30	3.219	0.201	1989-09-30	1989-09-30	135.0	2012-09-25	2012-09-25	0.306	0.544	0.918	4.89	13.6	0.31	14770	14738	99.783				25.5	38.5	99.2	233.2	456.7	741	729	0.0566	0.4326	0.4458	0.024	0.0359	0.0489	0.4387	0.4587	0.0315	0.0206	0.4692	0.5308			0.313	0.0105	0.6535	0.38	0.496	0.989	38.2	38.62	33.0	40.6	10.8	35.35	16.42	116	108	0.37	25.6	140.12	0.751	0.786	0.1058	0.0091	0.497	0.494	0.0133	0.724	0.526			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir on Bedale Beck, a rural catchment draining Bellerby Moor.	Flat-V weir, 1:10 cross-slope.	High flow record is suspect - the structure drowns as a result of backing-up from the Swale (a chart recorder monitors d/s levels but processed flows assume modularity).	25/02-08/03/1999 & 12-15/03/1999 no records as instruments removed while work on site in progress. Period of record reprocessed in October 2023 following new rating to improve low flows.	Rural, west-east catchment draining Bellerby Moor.	Considerable spray irrigation in the lower reaches otherwise minimal artificial impact on flow regime.
27076	Bielby Beck at Thornton Lock	103.1	SE7606144429	476061.0	444429.0	53°53'25.7031"N 0°50'39.0206"W	53.89047	-0.84417	Bielby Beck	Thornton Lock	6.2	EA-Y	F2830	27	1983-04-14		FV		8.0	33.0	true	false	false	false	false	false	false	true	false	false	false	false	false	I	1983-04-14	2023-09-30	0.497	0.008	1990-07-25	2022-08-12	11.3	2000-11-07	2012-11-25	0.027	0.104	0.237	1.039	1.602	0.52	14780	14734	99.689				7.8	13.5	90.0	190.7	245.0	723	697	0.0905	0.4899	0.3607	0.0001	0.0394	0.0806	0.6792	0.2103	0.0045	0.0245	0.5125		0.1016	0.3859	0.0026	0.2771	0.0335	0.32	0.764	0.98	67.3	22.55	31.7	38.8	11.6	23.5	13.57	94	201	0.34	7.8	107.48	0.762	0.492	0.1476	0.0081	0.694	0.67	0.0099	0.765	0.666			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir draining a low-lying rural catchment. Complementary to 27861 - Pocklington Canal feeder.	Flat-V weir, 1:10 cross-slope. Complementary to Pocklington Canal feeder (27861).	Drowns at high flows (backing-up from the Derwent).	Anomalous flows can be caused by British Waterway interventions at the sluice near the weir. Missing data 6th-17th January 2017 due to logger fault.	Headwaters below the scarp of the Yorkshire Wolds but catchment is low-lying. Predominantly rural.	Summation of flows (from 27861) plus upstream canal abstraction required for total catchment response. Significant spray irrigation in spring/summer.
27077	Bradford Beck at Shipley	58.0	SE1512337472	415123.0	437472.0	53°49'59.8411"N 1°46'18.1037"W	53.83329	-1.7717	Bradford Beck	Shipley	68.0	EA-Y	F1650	27	1983-09-20		FV			16.0	true	false	false	false	false	false	false	false	false	false	false	false	false	I	1983-09-19	2023-09-30	0.593	0.102	2019-07-06	2019-07-06	13.9	2022-02-20	2022-02-20	0.158	0.248	0.35	1.237	1.778	0.52	14622	14622	100.0				68.4	120.4	186.0	279.0	402.1	925	931	0.0932	0.0313	0.2696	0.0068	0.5685	0.0345	0.0075	0.2961	0.0115	0.6486		0.0185		0.9815			0.5605	0.57	0.525	0.984	79.9	24.72	36.4	48.7	10.5	16.56	8.52	193	46	0.25	68.8	57.59	0.322	0.681	0.0342	0.3248	0.838	0.833	0.4213	0.913	0.845			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir in a heavily urbanised catchment on Bradford Beck.	Flat-V weir, 1:10 cross-slope in a relatively steep channel.	Weir drowns below QMED, so high flows are unreliable. There is a downstream level recorder, but processed flows assume modularity. New rating applied in 2015 - upper limb reduced from 2m to 1.2m to reflect the modular limit. Flow is calculated above 1.2m but flagged as estimated.	Flows reprocessed in 2015 after new rating implemented.	A heavily urbanised catchment.	Some import of water (storm overflows which make for an even flashier regime) otherwise net effect of abstractions and discharges is small.
27079	Calder at Methley	930.0	SE4082825695	440828.0	425695.0	53°43'33.8371"N 1°22'57.6888"W	53.72607	-1.38269	Calder	Methley	17.0	EA-Y	F1301	27	1986-06		USIV	288.0		8.0	true	true	true	true	false	false	false	false	false	false	false	false	false	SR	1988-06-07	2023-09-30	20.146	4.26	2022-08-30	2022-08-30	306.1	2008-01-21	2008-01-21	5.831	8.91	12.59	41.78	59.1	0.55	12899	12489	96.821	1988-08-01		233.867	11.5	50.4	188.4	386.8	580.3	1026	1024	0.1457	0.1056	0.4009	0.1314	0.188	0.0811	0.1378	0.3856	0.1884	0.1948	0.0001	0.4826		0.5173	0.0101	0.1328	0.0533	0.39	0.525	0.922	104.6	30.07	39.5	53.3	10.8	88.74	54.88	205	87	0.16	16.7	950.18	1.004	0.629	0.0598	0.0883	0.736	0.762	0.1063	0.817	0.796	1987		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Sidelooker that replaced a multi-path ultrasonic station opened in 1986, replacing 27004. Catchment is heavily reservoired and affected by complex water transfers.	Sidelooker since Nov 2021. Previously, multi-path ultrasonic gauging station positioned on a long straight reach around 45m wide, between flood banks. Primary gauging station on the River Calder, measures full range of flow. Constructed in 1986 but ultrasonic gauge records only available from June 1988, replaced earlier station at Newlands (27004) which closed in 1975.	Multi-path ultrasonic gauge in 45m wide section with raised embankments to 4m stage, no known by-passing. No formal control and variable backwater from confluence with Aire 1.8km downstream. Very low velocities at low flow affecting check gauging accuracy, also thermal stratification affecting ultrasonic gauge in summer. Regular pulsing in velocity observed at low flows, possibly due to boat movements. High suspended solids and long path lengths can cause signal attenuation at high flow, a number of periods infilled from back up rating. Various gauging locations over period of record, originally at cableway at Newlands, subsequently from road bridge d/s of gauge and recently by ArcBoat in gauge section. Some variability in gaugings due to lack of formal control but rating is considered reasonable to use as back up for data infilling when required. Gauged to 70% of AMAX1. Gauge may have been affected by mining subsidence during the period of operation.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Catchment draining the eastern flank of the Pennines. The impermeable geology is predominantly Upper Carboniferous Millstone Grit. Headwaters rise from rough-grazed, peat-covered moorland. Very steep, often-wooded headwater valleys cut down through Millstone Grit. The valley floors are strongly urbanised and industrialised. Significant urbanisation throughout period of record. Coal mining activity in the lower reaches but this has subsequently declined in recent years. Flood relief channel built at Dewsbury.	Heavy influence of reservoirs, estimated 9.3% of catchment area drains through 21 impoundments. Complicated water transfer plan and significant effluent returns. Sluice/weir systems on the River Aire may influence levels at Methley.
27080	Aire at Oulton Lemonroyd	865.0	SE3817028169	438170.0	428169.0	53°44'54.6065"N 1°25'21.6084"W	53.7485	-1.42267	Aire	Oulton Lemonroyd	18.0	EA-Y	F1702	27	1985-09-06		C			7.0	true	true	true	true	false	false	false	true	false	false	false	false	false	PEI	1985-09-06	2023-09-30	18.682	3.787	1989-10-09	1989-10-09	228.0	2015-12-27	2015-12-27	5.33	8.12	11.6	40.4	56.58	0.54	13904	13904	100.0	1985-09-06		156.076	13.1	75.2	175.4	344.9	586.0	971	984	0.0992	0.0424	0.5427	0.0621	0.2383	0.0669	0.039	0.5236	0.1208	0.2448		0.6885	0.0035	0.3081	0.0122	0.0313	0.5083	0.4	0.402	0.96	86.7	37.9	37.2	49.1	10.6	96.06	51.29	194	119	0.12	16.8	861.58	0.81	0.909	0.0636	0.111	0.791	0.557	0.1529	0.882	0.582	1984		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Triangular Crump weir with fish pass. Replaced Fleet Weir. All data held against this station number.	Triangular Crump weir (approx. 27m wide) with fish pass. No cableway. In 1993 it replaced Fleet Weir 320m u/s. Fleet Weir, built 1985, is a 35m wide Crump weir with a fish pass (not used). Fleet Weir drowns as a result of backing up from Lemonroyd. Both gauges are located downstream of Leeds but upstream of the major confluence with the Calder. A serious bank breach in March 1988 inundated the adjacent open cast coal mine and was attributed to geological fault. After the breach Lemonroyd was built in a 3km long, S-shaped cut through meandering river channel, further from opencast mine. Fleet Weir had shown evidence of movement prior to the inundation event. All data (for 27080 and Fleet Weir) held against this station number. Flows above Qmed are diverted >600m u/s of gauge through St Aidens Washland, flows return to the Aire downstream of the gauge. The offtake to the washland was completed in 2012 (although the washland used prior to this).	Crump weir with high modular range, no known drowning and all flows retained within the structure. Construction of St Aidans washland upstream does now cause some bypassing of Oulton Lemonroyd Weir during flood flows above QMED. This bypass is stored in large washland area and returns downstream of the weir. Low and medium flows not affected by the offtake. Aire and Calder Navigation canal bypasses the station. Gauging originally carried out by boat at low to moderate levels, higher flows were gauged from the upstream footbridge and now by ADCP upstream of the weir. Two peak flow ratings applied across period of record, the first applies to the data from Fleet Weir and the more recent is valid from August 1995. Recent rating shows a good fit to gaugings.	Data for 06/09/1985 to 11/08/1995 from Fleet Weir; 11/08/1995 to present from 27080. All data held against this station number. December 2015 flood peak thought to have been significantly delayed and reduced as a result of flow into the St Aidan's washland upstream. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Largely impervious catchment developed mainly on Carboniferous Limestone (headwaters), Millstone Grit and Lower Coal Measures. Extensive superficial deposits, predominantly Boulder Clay. Rough grazing in Pennine headwaters contrasts with very considerable urban and industrial development (Leeds and Bradford conurbation) below Skipton. General increase in areas of development in mid to lower catchment through period of record.	Significant urban development in the catchment and complex pattern of water utilisation, including canals and wastewater discharges gives significant disturbance to runoff regime. Leeds and Bradford sewage treatment works discharge upstream, there is a net import of water from Wharfe and Nidd catchments for public water supply.
27081	Oulton Beck at Oulton Farrer Lane	25.1	SE3644728102	436447.0	428102.0	53°44'52.8813"N 1°26'55.6912"W	53.74802	-1.4488	Oulton Beck	Oulton Farrer Lane	20.0	EA-Y	F1715	27	1985-02		FV			33.0	true	true	true	true	false	false	false	true	false	false	false	false	false		1986-11-01	2023-09-30	0.158	0.013	1991-09-07	1991-09-07	5.16	2007-06-25	2007-06-25	0.031	0.062	0.094	0.334	0.482	0.53	13483	13483	100.0	1985-02-19		2.47	20.1	47.1	76.0	122.8	143.7	656	677	0.0985	0.2917	0.1806	0.0005	0.3983	0.0491	0.416	0.1728	0.0021	0.356				1.0	0.0032		0.0688	0.32	0.535	0.997	40.4	24.4	31.1	40.5	10.5	13.9	6.86	80	87	0.39	20.2	25.1	0.387	0.923	0.0486	0.2122	0.755	0.994	0.2235	0.849	1.011			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir. Catchment highly urbanised and industrialised.	Flat-V weir, 5m wide (1:10 cross-slope) in steep-sided, straight channel. No cableway. May be subject to accretion and bank encroachment but well maintained and should not affect high flow ratings.	High concrete wing-walls prevent bypassing. Substantial modular range, drops away quickly over a cascade of weirs downstream of the gauge. Downstream level recorder suggests station remains modular in all events. One peak flow rating applied across period of record. Theoretical rating with current meter check gaugings from bridge.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A small, relatively low-lying impervious (Coal Measures) catchment with significant urban/suburban development on the periphery of Leeds. Catchment is traversed by both the M1 and M62. Increasing urbanisation during period of record.	Stormwater drainage in part of the catchment but very few abstractions or discharges. An outfall draining a large urban area joins the beck just downstream of the station.
27082	Cundall Beck at Bat Bridge	23.5	SE4192472437	441924.0	472437.0	54°08'45.8105"N 1°21'34.8644"W	54.14606	-1.35968	Cundall Beck	Bat Bridge	14.1	EA-Y	F2311	27	1986-11		FV			32.0	true	false	false	false	false	false	false	true	false	false	false	false	false	IN	1987-01-01	2023-09-30	0.285	0.016	1992-06-15	1997-10-05	34.6	2015-12-28	2015-12-28	0.034	0.067	0.093	0.286	0.533	0.31	13422	13365	99.575				16.1	19.1	30.9	49.0	60.9	632	635	0.02	0.6861	0.1803		0.0862	0.0257	0.6812	0.2703	0.0001	0.0228	1.0				0.8773		0.1227	0.34	0.654	0.999	14.8	31.6	29.9	36.8	10.8	9.86	5.27	32	91	0.4	16.1	22.83	0.977	0.745	0.2044	0.0114	0.516	1.018	0.0176	0.685	1.035			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir on Cundall Beck that drains to the Swale.	Flat-V weir, 1:10 cross-slope (replaced the original sharp-edged weir).	Weir drowns at ~0.7cumecs (below QMED), introducing significant uncertainty into higher flows.	Similar low flows to the 1997 7-day minimum recorded in 1990 and 1995.	A low-lying, relatively flat catchment - developed on Permo-Triassic sandstones - draining to the Swale. Land use: dominantly agricultural.	Flow regime is largely natural. Flow augmentation scheme from boreholes tested late 1980s and early 1990s but never fully implemented. Impact on flows thought to be very limited.
27083	Foss at Huntington	118.0	SE6123954337	461239.0	454337.0	53°58'53.2944"N 1°04'03.6431"W	53.98147	-1.06768	Foss	Huntington	7.5	EA-Y	F2470_SL	27	1987-04		EM+IV				true	true	true	true	false	false	false	true	false	false	false	false	false	EN	1987-04-15	2023-09-30	0.89	0.0	2018-06-12	2023-06-01	32.5	2015-12-26	2015-12-26	0.068	0.196	0.391	2.22	3.402	0.43	13318	13291	99.797	1987-04-01		12.323	7.4	13.7	26.5	74.6	174.7	644	637	0.0597	0.5433	0.2821	0.0143	0.0818	0.0405	0.5233	0.3519	0.0261	0.0567	0.5135	0.0602	0.3394	0.0868	0.0101	0.5625	0.3527	0.32	0.478	0.99	20.0	34.29	29.7	38.9	11.1	33.85	17.47	39	195	0.28	7.4	126.35	1.574	0.802	0.2951	0.0239	0.714	0.37	0.0343	0.83	0.397	1987		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Side-looking H-ADVP gauging station 4km u/s of the Foss barrier.	Side-looking H-ADVP gauging station 4km u/s of the Foss barrier. Until 2009, the station was an electromagnetic gauge - a buried coil in an insulated trapezoidal channel. The side-looker and electromagnetic gauge ran in parallel; and from 2009 the H-ADVP data are used for daily flows. Stage-discharge rating for peak flows. No cableway.	Open channel section. Most flood events contained with just some minor out of bank flow on right bank, exception is December 2015 which had extensive spill on both banks. Original records were from electromagnetic gauge, supplemented with stage-discharge rating for some high flow events. Side looking H-ADVP gauge with velocity-index rating from 2009. A peak flow rating, checked independently with current meter gauging, is used for peak flows.	Daily mean flow records are from the EM gauge (with occasional infill from stage-discharge rating) until Sep 2009, after which the velocity-index gauge is used. Peak flows taken from rating curve for period of record. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). Drops in summer flows (for example, June 2018, July 2019, May 2020 and Sept 2020) are likely due to weed growth so these flows should be treated as suspect.	Relatively low lying catchment. Headwaters on Yearsley Moor but catchment is mostly located in Vale of York. Mixed geology overlain with Boulder Clay and lacustrine clays. Predominantly arable, with some urban development above station. No known catchment changes.	Low lying rural headwaters give relatively slow response to rainfall, urban development in lower reaches causes some addition from surface water drainage diverted into catchment at high flows and effluent discharges via Walbutts STW.
27084	Eastburn Beck at Crosshills	43.35	SE0203545263	402035.0	445263.0	53°54'12.6961"N 1°58'13.8463"W	53.90353	-1.97051	Eastburn Beck	Crosshills	89.0	EA-Y	F1525	27	1988-01-01		FV		55.5	24.0	true	true	false	true	false	false	true	false	false	false	false	false	false	N	1988-02-25	2023-09-30	0.879	0.033	1995-08-22	1995-08-22	37.4	2015-12-26	2015-12-26	0.075	0.197	0.395	2.17	3.31	0.35	13002	13002	100.0	1988-02-25		28.85	87.9	152.9	269.5	343.1	442.1	1123	1129	0.0639	0.0273	0.7625	0.0931	0.0438	0.049	0.007	0.7255	0.184	0.0337		1.0			0.0233	0.0692	0.633	0.62	0.315	0.998	114.2	46.64	38.1	53.1	10.5	12.1	7.46	260	35	0.2	87.9	41.01	0.287	0.55	0.025	0.0101	0.601	0.47	0.0177	0.661	0.549	1987		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir in a steep Pennine catchment with a natural regime.	Concrete flat-V weir (14m wide) in widened channel upstream of confluence with R Aire.	All flows contained, no known bypassing. Backing-up from the River Aire (confluence <100m downstream) causes drowning at high flows; d/s levels monitored but processed flows assume modularity - downstream water levels indicate that there was a hydraulic gradient over the weir for all AMAX values (where data were available), but not some POTs. Theoretical peak flow rating applied across period of record. Good fit to available gaugings.	Tree on weir affected data in Mar/Apr 2004, period in Oct 2006 affected by silt partially blocking stilling well, suspect rise in May 2008 for same reason, along with period Jul-Oct 2015. Level may be under-recorded on 31/10/2000, the downstream gauge recorded a level 0.3m higher than the upstream gauge. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Steep Pennine catchment draining to the Aire, developed on Millstone Grit, with extensive Boulder Clay cover. Largely moorland with rough grazing the principal land use. Continuing increase in urbanisation through period of record in the lower catchment (Crosshills).	Natural regime. No known artificial influences.
27085	Cod Beck at Dalton Bridge	209.34	SE4219976603	442199.0	476603.0	54°11'00.5107"N 1°21'17.6148"W	54.18348	-1.35489	Cod Beck	Dalton Bridge	19.0	EA-Y	F2313_SL	27	1989-01-01		IV	25.0		0.0	true	false	false	false	false	false	false	true	false	false	false	false	false	PG	1988-12-15	2023-09-30	1.683	0.0	2020-08-10	2020-08-10	27.8	1999-03-07	1999-03-07	0.2	0.466	0.827	4.02	6.03	0.48	12708	12403	97.6				17.6	34.0	94.1	264.3	398.4	708	696	0.1265	0.4255	0.3346	0.0705	0.0332	0.1118	0.4133	0.3738	0.0762	0.0234	0.1231	0.2013	0.6442	0.0315	0.1438	0.0595	0.5846	0.34	0.413	0.988	68.6	37.12	30.4	39.8	10.8	37.92	18.05	119	232	0.31	17.6	206.16	0.777	0.683	0.1027	0.0089	0.524	0.705	0.012	0.699	0.594			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Horizontal ADCP (sidelooker) gauging station in a catchment draining the Vale of York.	Electromagnetic gauging station, replaced with sidelooker at end of 2018. No cableway.	The electromagnetic gauge failed at the end of 2018 and was disconnected. Now gauged using a side looking ADCP within the same reach. Affected by backing-up from the Swale.	Data 23/11/2014-03/12/2014 & 04/01/2015-21/01/2015 missing due to problems with the electromagnetic coil. Flow data suspect from 25/07/20 - 11/08/2020 (and possibly 20-25/08/2020) as H-ADCP performance affected by weed growth in channel, causing spurious velocity data.	A linear, N-S trending, catchment draining largely Lower Lias formations in the Vale of York (but baseflow from the Corallian of the Hambleton Hills also important). Apart from Thirsk, a very rural catchment.	A sensibly natural regime but spray irrigation can affect summer flows, particularly in drought years.
27086	Skell at Ripon Alma Weir	119.5	SE3157070949	431570.0	470949.0	54°08'00.3259"N 1°31'06.0278"W	54.13342	-1.51834	Skell	Ripon Alma Weir	22.5	EA-Y	F2216	27	1984-01-01		FVUS			20.6	true	true	true	true	false	false	false	true	false	false	false	false	false	G	1984-07-17	2023-09-30	1.557	0.038	2017-09-02	2017-09-02	39.09	2007-06-15	2007-06-15	0.141	0.407	0.765	3.683	5.662	0.46	14320	13378	93.422	1984-07-17		28.522	20.9	81.5	168.6	321.3	412.8	882	899	0.1187	0.1325	0.4763	0.23	0.035	0.1201	0.1044	0.4907	0.256	0.0263	0.1755	0.8186		0.0059	0.0207	0.0062	0.4741	0.36	0.422	0.97	66.1	40.1	39.4	47.5	11.7	27.9	15.05	187	86	0.39	21.0	117.33	0.456	0.759	0.0457	0.0074	0.45	0.147	0.015	0.772	0.325	1983		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir built to replace original mill weir in 1984. Station closed July 2010 - December 2012 due to construction of Ripon flood alleviation scheme, re-opened December 2012 at new location 60m upstream.	Flat-V weir opened 1984 (1:20 cross-slopes, 25m wide). Replaced original Alma Weir. Offtake to Ripon Canal feeder is u/s. Station closed July 2010 - due to construction of Ripon flood alleviation scheme, reopened December 2012 with new structure 60m u/s of old site. New weir is lower and expected to drown in high flows. Ultrasonics installed July 2014 to measure high flows.	Original (1984) weir had substantial modular range and did not drown. Thought to be reasonably accurate until (occasionally) overtopped during large events, however no cableway for check gauging. Considerable accretion on u/s apron. Theoretical rating developed for new structure and applied from 22/11/2012. It has a lower modular range and is expected to drown in large events. Subject to skewed cross-section due to deposition. Ultrasonic gauge installed here 2014 to measure non-modular flows but performance has been poor so not currently used for peak flow records. Two peak flow ratings cover period of record, for the original weir from 1984 and the new weir from 2012. Good fit to available gaugings. Tail recording by pressure transducer.	No daily flow data for July 2010-December 2012 due to construction of Ripon flood alleviation scheme. Pre-2010 data reprocessed in 2014 after rating review, including hydraulic modelling to estimate out of bank flow. Records from December 2012 are at new location 60m upstream of original station. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Geology: Millstone Grit and Magnesian Limestone with Boulder Clay in lower catchment. A predominantly rural catchment below moorland (Pennine) headwaters, although Ripon is just u/s of station. No major arable farming in catchment. Significant change in land use with the urban development of Ripon.	Swallow holes u/s of Laver/Skell confluence greatly reduce summer flows. Flood storage reservoir constructed on Laver upstream in 2012 will cause some attenuation of peak flows. Flow regime impacted by Ripon canal feeder.
27087	Derwent at Low Marishes	457.5	SE8329077405	483290.0	477405.0	54°11'08.3983"N 0°43'30.6271"W	54.18567	-0.72517	Derwent	Low Marishes	15.0	EA-Y	F2702	27	1989-01-01		US		26.0		true	true	false	true	false	false	false	true	false	false	false	false	false	PGI	1989-07-07	2023-09-30	4.02	0.396	1989-07-27	1989-07-27	27.5	2000-11-09	2000-11-09	1.0	2.16	3.27	7.9	9.48	0.82	12504	12357	98.824	1989-07-07		14.389	16.7	24.0	84.5	208.7	295.7	751	741	0.1868	0.4841	0.2333	0.0573	0.0342	0.2116	0.4982	0.2223	0.0485	0.018	0.0587	0.4928	0.4485		0.0191	0.3092	0.108	0.34	0.684	0.996	67.3	25.95	33.2	42.9	10.6	55.68	24.16	101	182	0.14	17.0	475.94	1.313	0.65	0.1876	0.0106	0.575	0.905	0.01	0.744	0.983	1988		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Electromagnetic gauge replaced with ultrasonic in low gradient channel, affected by backwater from Rye confluence downstream (can even flow backwards at high flows) and diversion of high flows out of upper catchment via Sea Cut.	Electromagnetic gauge in trapezoidal section with vertical abutments above, 13.5m wide at top water level, provides full range flow measurement. Station was replaced with an ultrasonic gauging station in June 2022.	Electromagnetic gauge with overhead coil set across old railway bridge abutments. Section has a trapezoidal channel, 8m wide at bed and 13.5m wide at top, with vertical brick abutments above. Weedgrowth in section does not affect the gauge. Confluence with Rye 2.7km d/s leads to significant backwater and can cause flow reversal in flood as Rye peaks earlier than Derwent. Diversion of flood flows from upper catchment via Sea Cut. Early problems with siltation of tapping pipe largely resolved by installation of new pipe at higher level but have occasionally reoccurred. Cableway allows check gauging to high level, 2 highest gaugings around 20% above flow recorded by the gauge but other gaugings are more consistent. No stable stage-discharge relation is possible due to variable backwater, direct flow measured by the gauge is used throughout the range.	Flow regularly drops to zero ahead of the peak during flood events, thought to be due to higher flow inputs from the Rye pushing back up into the Derwent; the gauge cannot record negative flow and flat lines at zero; peak flows on the Derwent likely to be a combination of catchment runoff and water from the Rye draining back out of storage, the majority of AMAX events affected in this way. Station added to peak flows dataset in September 2022 (WINFAP Files v11).	The catchment drains the eastern part of the North York Moors. Geology: mostly permeable Oolite and Corallian formations, superficial deposits (lacustrine clays) in low-lying areas in south. Largely rural with moorland and wooded headwaters, predominantly arable in lower reaches. No known catchment changes.	Strong baseflow influence on the flow regime; largely natural regime but some losses from spray irrigation in summer and Sea Cut diversion reduces the contributing catchment area by 20% at high flows (measured at 27033).
27088	Calder at Mytholmroyd	141.87	SE01162605	401160.0	426050.0	53°43'51.0390"N 1°59'02.0243"W	53.73084	-1.9839	Calder	Mytholmroyd	89.0	EA-Y	F1204A	27	1989-01-01		IV			10.0	true	true	true	true	false	false	false	false	false	false	false	false	false	SR	1989-07-19	2018-06-25	3.903	0.094	1989-10-02	1989-10-04	103.0	2015-12-26	2015-12-26	0.429	1.28	2.07	9.28	13.3	0.45	10569	10550	99.82	1989-07-19		81.918	88.5	198.0	336.0	424.9	503.4	1365	1360	0.1004	0.0074	0.4868	0.322	0.0472	0.0718	0.0055	0.3985	0.479	0.0336		0.9334		0.0666	0.0015	0.3495	0.0057	0.57	0.361	0.945	147.9	46.77	44.0	60.5	11.4	19.67	11.46	323	150	0.11	88.5	146.87	0.399	0.953	0.0238	0.0113	0.523	0.776	0.0229	0.646	0.806			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-index gauge in a steep Pennine catchment. Previously velocity-area and ultrasonic gauge.	Originally called Caldene Bridge, name changed to Mytholmroyd in 2008. Gauge changed significantly following construction of flood alleviation scheme in the town, which has previously suffered significant flood damages e.g. Dec 2015 flood. Originally multi-path ultrasonic in 10m wide channel for daily flows and velocity area rated section for peak flows, but rating used for all flows from October 2017 until gauge removed in June 2018 to allow construction of defences. Replacement gauge measures stage data in same location as original gauge near Caldene Bridge but flows are measured by velocity-index gauge at new site 600m upstream.	No formal control and no cableway present. Full range station but ultrasonic suffered signal attenuation due to suspended solids / entrained air in flood conditions. Flow is contained by high walls to around 3.9m stage, the largest flood events have small amount of bypass on the left bank and the December 2015 event was much higher than previous maximum and led to significant by-pass flow along Burnley Road on the left bank. Ultrasonic prone to failure at high flows so peak flow records derived from rated flow. One peak flow rating applied to record up to June 2018, this was revised in 2017 following review and hydraulic modelling and is thought to give a reasonably good estimate of peak flows including out of bank events. Since construction of flood defence scheme new bed-mounted velocity-index gauge installed in straight section under old packhorse bridge (Hawksclough Bridge), calibrated with check gaugings up to 40 cumecs as of April 2024.	Daily flows August-September 2007 should be considered suspect. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7). Data not available from July 2018 until September 2022 due to Flood Alleviation Scheme works at the site.	Steep, Pennine catchment with extensive moorland draining the eastern flank of the Pennines, above Halifax. Mostly Carboniferous Millstone Grit, with peat cover in headwaters. Predominantly moorland and pasture, but heavily urbanised and forested along the lower-lying river valleys. The valley floors are strongly urbanised and industrialised, including Todmorden and Hebden Bridge. Continued increases in urbanisation.	Heavily reservoired. Estimated 21.4% of catchment area drains through around 8 impoundments. Net export of water; Hebden Water Reservoirs provide supply to Halifax. Effluent and (minor) minewater discharge can affect flow pattern. Offtake into Rochdale Canal can also reduce flows.
27089	Wharfe at Tadcaster	818.0	SE4770644103	447706.0	444103.0	53°53'27.3143"N 1°16'32.2020"W	53.89092	-1.27561	Wharfe	Tadcaster	6.6	EA-Y	F2002	27	1991-01-01		US				true	true	true	true	false	false	false	true	true	false	false	false	false	SRPI	1991-06-27	2023-09-30	17.633	0.912	1996-08-19	1996-08-19	374.0	2015-12-26	2015-12-26	2.84	5.79	9.23	42.1	60.5	0.41	11784	11749	99.703	1991-06-27		216.832	5.3	58.1	239.9	480.8	703.7	1138	1130	0.0904	0.0915	0.5909	0.1656	0.0444	0.0739	0.0866	0.504	0.2921	0.0344	0.0718	0.9213		0.0069	0.0279	0.0791	0.3361	0.41	0.416	0.93	106.3	40.79	40.2	52.8	11.1	118.47	66.41	258	128	0.13	5.3	815.35	0.857	0.753	0.0576	0.0115	0.628	0.571	0.018	0.776	0.592	1990		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Multi-path ultrasonic station. Early problems with siltation. Originally intended to replace 27002 but poor early performance meant both stations still open.	Multi-path ultrasonic gauging station (cross configuration) installed in 1990 just u/s of tidal limit of the Wharfe. Bed scouring during 1991 flood necessitated recalibration. Initial problems with sand deposition due to over-wide channel. 27089 planned to replace 27002 (Flint Mill) but both stations have been retained. Cableway moved to here from Wetherby.	Only known bypass in Dec 2015 event, although does regularly overtop the banks d/s. Attenuation of ultrasonic signal can be a problem in summer due to low velocity and thermal stratification of river. Rating for infilling gaps in ultrasonic data revised in 2014 and is used as a backup only. At peak flows (>150 cumecs) data are verified by current metering and a rating curve is sometimes applied in preference to the ultrasonic data; station rated excellent for high flow measurement.	Low flows in May-June 2008, due to issues with Ultrasonic equipment, were infilled from the rating but should be treated with caution. Rating used to infill ultrasonic data gaps revised in 2014 and slightly increases low flows and decreases high flows by 10-15%. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Mainly Carboniferous Limestone, grits and Coal Measures, some Magnesian Limestone above Tadcaster. Signifcant outcrops of Boulder Clay and some alluvial deposits in valleys. Largely rural catchment - moorland, Pennine headwaters, arable farming and some urban development in the lower catchment. No known catchment changes.	Regulation effect of headwater reservoirs evident at low flows, small net export of water.
27090	Swale at Catterick Bridge	499.4	SE2261899315	422618.0	499315.0	54°23'19.7579"N 1°39'11.5560"W	54.38882	-1.65321	Swale	Catterick Bridge	60.0	EA-Y	F2306	27	1992-12		USVA	450.0		10.0	true	true	true	true	false	false	false	true	false	false	false	false	false	N	1992-12-17	2023-09-30	12.859	0.33	2010-07-04	2010-07-04	301.0	1995-01-31	1995-01-31	1.33	3.72	6.75	30.7	46.6	0.37	11245	11245	100.0	1992-12-17		306.276	57.2	150.5	363.9	549.2	714.3	1194	1123	0.0548	0.0668	0.5405	0.3017	0.0195	0.0457	0.0745	0.3872	0.4793	0.0121	0.0004	0.9996			0.0141	0.2318	0.4269	0.61	0.381	0.998	119.0	46.29	41.0	52.7	11.0	60.72	32.15	358	84	0.19	57.4	497.56	0.668	0.746	0.0382	0.0041			0.008	0.744	0.318			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with four-path ultrasonics to monitor low flows. Replaced 27024 (closed 1980) from 1992.	Velocity area station with cableway and four-path ultrasonic gauge to monitor low flows. Old road bridge d/s acts as control at high flows. Superseded 27024 (Richmond) from 1992. 27024 was closed in 1980.	Ultrasonic equipment available to measure low flows but ratings provides a reasonable fit to available gaugings and is used as the primary data source. Two peak flow ratings across period of record.	Flows from 1991 reprocessed in 2002 - all flows reduced. New rating in 2014 (applied back to 2009) had no effect on high flows. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Typical responsive Pennine catchment. Mixed geology, mostly of moderate permeability - overlain by peat in headwaters and Boulder Clay in lower catchment. Mostly upland pasture with some afforestation (and considerable gripping). No known catchment changes.	Abstraction for MOD camp u/s; otherwise natural regime.
27091	Crimple at Blackstones	76.8	SE4013252956	440132.0	452956.0	53°58'16.0480"N 1°23'22.8738"W	53.97112	-1.38969	Crimple	Blackstones	22.0	EA-Y	F2125	27	1991-01-03		FV			17.0	true	false	false	false	false	false	false	false	false	false	false	false	false		2000-01-01	2023-09-30	1.072	0.104	2022-07-16	2022-07-16	89.5	2015-12-26	2015-12-26	0.147	0.264	0.422	1.945	3.07	0.34	8674	8674	100.0				21.6	40.0	88.7	169.1	243.1	773	752	0.0922	0.2895	0.476		0.132	0.0573	0.2869	0.5477	0.0048	0.1024	0.0962	0.8593		0.0446	0.0299		0.4519	0.34	0.486	0.994	47.7	30.09	35.2	43.9	11.6	24.64	13.4	98	85	0.33	21.7	76.8	0.611	0.667	0.0691	0.0563	0.814	1.089	0.0685	0.884	1.088			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir in a largely rural catchment.	Flat-V weir, close to confluence with Nidd.	Drowns and bypasses in high flows.		Largely rural, apart from the south-eastern half of Harrogate.	Flow regime affected by urban drainage from Harrogate and sewage treatment discharges.
27092	Esk at Briggswath	325.4	NZ8731608248	487316.0	508248.0	54°27'43.6064"N 0°39'16.1474"W	54.46211	-0.65449	Esk	Briggswath	7.0	EA-Y	F2902	27	1992-10-02		US				true	true	true	true	false	false	false	false	false	false	false	false	false		1970-10-01	2023-09-30	4.811	0.12	1976-08-26	1976-08-26	142.4	1999-03-05	1999-03-05	0.623	1.311	2.318	10.6	17.14	0.41	19358	18853	97.391	1992-10-02		134.462	6.3	123.9	221.7	323.6	432.5	896	877	0.1127	0.089	0.3099	0.4527	0.0249	0.1018	0.1014	0.336	0.456	0.0047		0.7299	0.2701		0.0737	0.1295	0.2106	0.4	0.349	0.999	110.0	48.58	35.8	46.9	10.5	46.65	24.65	222	62	0.1	6.4	325.27	0.316	0.787	0.023	0.0023			0.0038			1951..1975	1951-10-01..1976-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Multi-path ultrasonic station in a permeable catchment in the North York Moors. Replaced Esk at Sleights (27050); combined record held at Briggswath.	Multi-path ultrasonic station installed at Briggswath in a stable, 30m wide channel in 1992. Gauge has a tendency to drop out on the rising limb of the hydrograph, due to long path lengths and high suspended solids. Station replaced 27050 (Sleights, closed January 1998) in 1992, which was a velocity area station with a broad-crested masonry weir and a fish pass on left bank.	Five ratings across the period of record (three for Sleights data, two for Briggswath data). At Briggswath, there is the same limb for peak flows but different lower flow limbs due to an HEP abstraction downstream at Ruswarp weir from 2012 altering the low flow control. The ultrasonic gauge is not affected by the HEP, at low flow the rating is just used for infilling gaps. The high flow rating is not affected by the HEP and is still used in preference to the ultrasonic for peak flows. Cableway gaugings extend to a reasonable level. At Sleights, the weir (25m wide) had a 1m long crest (5.59mAOD) and a fish pass (11.73m wide and 0.71m lower). Low flows were contained in the fish pass that was restored in 1993 but with no change to the rating. Largest events at Sleights were out of bank.	Following statistical assessment of continuity, mean and peak flow data are combined records for Sleights (27050) and Briggswath (27092); POT thresholds prior to merge were 59.986 and 57.784, respectively. Full period of record data reviewed and released in September 2019 (WINFAP Files v8).	Permeable headwaters (Jurassic limestone of the North York Moors) thence mainly Middle Oolite and Middle Lias; extensive Drift cover. A rural catchment with moorland headwaters. No known catchment changes.	Responsive and sensibly natural flow regime with no known artificial influences noted at either of the merged sites.
27093	Riccal at Nunnington	40.23	SE6728080509	467280.0	480509.0	54°12'57.2548"N 0°58'11.1595"W	54.2159	-0.96977	Riccal	Nunnington		EA-Y	F2581	27	2005-12-02		US				true	false	false	false	false	false	false	false	false	false	false	false	false		2006-02-09	2023-09-30	0.423	0.149	2022-08-31	2022-09-02	7.86	2021-01-20	2021-01-20	0.167	0.205	0.244	0.886	1.346	0.64	6443	6356	98.65									854	857	0.1748	0.2285	0.2344	0.3378	0.0155	0.1768	0.2383	0.2521	0.3323	0.0006								0.38	0.512	1.0	93.4	34.35	32.5	42.7	10.3	23.83	14.24	197	169	0.41	32.6	40.24	0.453	0.416	0.0494	0.0032			0.002					gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station opened in December 2005 and replaced 27058. Rating used to infill at stage less than 1m.	Ultrasonic gauging station opened 02-12-2005 to replace 27058 (Riccal at Crook House Farm) which was 1.3km upstream. Problems of power loss to the ultrasonics throughout the period of record.	Rating developed in 2011 which is used to infill missing data at a stage of less than 1m; where rating has been used to infill data over a stage of 1m, data should be used with caution.	Missing data 22/02/2010-02/03/2010, due to power issues at the site.	Small, linear catchment draining the North York Moors. Geology: shales, sandstones and limestones. Moorland headwaters, arable in lower catchment, significant forestry.
27094	Wiske at Romanby Viewly Bridge	158.21	SE3509492105	435094.0	492105.0	54°19'23.9638"N 1°27'43.0048"W	54.32332	-1.46195	Wiske	Romanby Viewly Bridge	28.4	EA-Y	F2322	27	2007-03-08		USVA				true	true	false	true	false	false	false	false	false	false	false	false	false		2007-03-08	2023-09-30	1.332	0.043	2018-11-18	2018-11-18	31.7	2012-11-26	2012-11-26	0.117	0.259	0.465	3.61	6.18	0.34	6051	5669	93.687	2007-03-08		13.05	28.4	39.7	57.8	81.6	314.1	658	637	0.0389	0.557	0.3598	0.0015	0.0376	0.0299	0.5508	0.3809	0.0036	0.0339	0.4348	0.0018	0.1282	0.4352	0.0363		0.9606	0.34	0.367	0.998	29.9	39.07	29.6	36.9	10.3	39.43	17.03	62	268	0.09	28.4	158.21	1.005	0.925	0.1521	0.016	0.704	0.44	0.0182	0.82	0.407			gdf;gmf;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauge with velocity-area rating for low flows, in low lying catchment draining western flanks of the North York Moors.	Crossed-path multi-path ultrasonic gauge in rectangular section under bridge, with informal flat V weir downstream for low flow control.	Ultrasonic gauge performs well at medium and higher flows but performance is poor at lower flows. The flat V weir has a rating curve which performs well at low flows, so flows are derived from this below 0.6m stage (3.4 cumecs) and from the ultrasonic gauge above this. Gauged to within 40% of QMED. Some minor by-passing through adjacent flood arches in very large events.	Data should be treated with caution from 10/2018 onwards due to sediment deposition impacting the operation of the gauge.	A low-lying, largely rural catchment mostly on Permian/Triassic formations (sandstones and mudstones), with extensive Drift cover.	Effluent returns and spray irrigation abstractions have some impact on the flow regime.
27095	Pickering Beck at Pickering	66.2	SE7966484039	479664.0	484039.0	54°14'45.0585"N 0°46'44.2823"W	54.24585	-0.77897	Pickering Beck	Pickering	30.9	EA-Y	F2517	27	2000-09		VA				false	true	true	true	false	false	false	false	false	false	false	false	false																				2000-06-22		7.413	30.9	87.1	169.7	245.8	295.7	850	837	0.2523	0.2584	0.3056	0.1591	0.0172	0.2546	0.3052	0.2789	0.156	0.0053		0.7103	0.2897			0.0533		0.4	0.689	1.0	116.4	20.0	33.8	45.6	10.7	23.41	11.8	169	179	0.34	30.6	66.26	0.267	0.882	0.0263	0.0032			0.0037			1999		pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station draining from the North Yorkshire Moors.	Velocity area station in Pickering. Replaces 27056 for peak flow used only. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	Velocity area station with open channel control. Rated by gaugings, supported by hydraulic model for high flow extrapolation. Gauged well above QMED and to within 12% of AMAX3. Flows are contained within channel to around 16 cumecs at the gauge section, spills out on the right bank above this but no bypassing and all flow is accounted for by the rating curve. Two peak flow ratings applied across period of record.	June 2007 peak is significantly higher than other AMAX events. It is possible this peak was truncated at top of instrument measurement range, although any measurement error is considered to be very small.	Catchment drains parts of the North York Moors. Geology: mostly grits and Limestones of the Corallian. Mixed rural land use; moorland in headwaters, arable in lower catchment; extensive forestry. Only known catchment changes are flood alleviation measures upstream.	Flood alleviation measures upstream since 2015, including a flood storage reservoir with restricted outflow culvert and natural flood management measures (woody debris dams, floodplain tree planting, blocking moorland drains).
27096	Wharfe at Netherside Hall	215.18	SD9856164970	398561.0	464970.0	54°04'50.3319"N 2°01'24.5560"W	54.08065	-2.02349	Wharfe	Netherside Hall	172.1	EA-Y	F1906	27	2003-11		USVA				true	true	true	true	false	false	false	false	false	false	false	false	false		2003-11-28	2023-06-04	10.713	0.086	2005-08-08	2005-08-08	200.7	2005-01-07	2005-01-07	0.746	2.51	4.917	27.47	39.6	0.27	7129	7126	99.958	2003-10-01		215.537	172.1	258.3	425.4	572.6	703.7	1640	1583	0.0567	0.0012	0.7982	0.1221	0.005	0.0607	0.0008	0.5373	0.3989	0.002		1.0				0.1495	0.182	0.62	0.386	0.998	165.4	46.46	48.1	65.2	11.5	32.57	16.96	421	157	0.09	172.1	215.22	0.476	0.785	0.0345	0.0005			0.0018					gdf;gmf;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel section with ultrasonic gauge, draining upland catchment in central Pennines.	Open channel section in deep valley with natural gravel control. Ultrasonic supported by rating curve. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	Ultrasonic gauge for daily flows but lowest flows (below 1 cumec) are below the range of the gauge and are infilled from the rating. Gauge frequently drops out due to aeration / turbulence at high flows so high flow record is taken from the rating curve. Gauged to within 40% of AMAX1 but flows are well contained with no bypassing. Gravel control has shifted previously, two ratings apply since start of record to account for this change. Regular gauging required to monitor future control changes.	Several periods of record infilled with data from rating curve, including very low and very high flows.	Predominantly natural upland catchment on Lower Carboniferous Limestone and Shales. Some Boulder Clay cover and peat in headwaters. Rural catchment, predominantly moorland and pasture.	Flashy flow regime.
27097	Aire at Bingley	464.78	SE1043639458	410436.0	439458.0	53°51'04.5119"N 1°50'34.2429"W	53.85125	-1.84285	Aire	Bingley		EA-Y	F1608	27	2000-06		VA				true	true	false	true	false	false	false	false	false	false	false	false	false		2000-05-17	2023-09-30	10.749	0.0	2006-07-06	2006-07-25	228.5	2015-12-26	2015-12-26	1.488	3.141	5.283	27.14	39.44	0.41	8537	8516	99.754	2000-05-17		100.573						1113	1124																		0.62	0.379	0.975	102.7	42.36	38.5	51.9	10.5	53.08	27.7	240	143	0.1	74.6	464.82	0.78	0.915	0.0641	0.0208	0.679	0.5	0.0357	0.777	0.563			gdf;gmf;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station upstream of long, broad-crested mill weir.	Velocity area station, with an approximately 150m wide broad crested mill weir set at a shallow angle to river flow just downstream. A H-ADVP velocity meter was also operated at the site from 2009 to 2017 with a velocity index rating. Station added to peak flows dataset in September 2019 (WINFAP Files v8).	Relatively straight approach channel to the level gauge located on the right bank. However the width and shallow angle of the weir are likely to lead to a variation in head between the right (upstream) and left (downstream) sides of the structure and it is relatively insensitive to changes in flow. Modular range is uncertain but rated by check gaugings up to QMED and extrapolated above. A single rating curve applies to period of record and gives a good fit to the gaugings.		Catchment draining the east side of the Pennines. Geology comprises predominantly Carboniferous Limestone in the headwaters down to Skipton with Millstone Grit in the lower catchment. Largely rural headwaters, more urban and industrial development in the lower catchment. Some influence from reservoirs and flood attenuation washlands.	Fairly natural regime, rural headwaters but with increasing urbanisation in the lower valley (including Skipton, Crosshills, Keighley) and several small reservoirs in the catchment. Washlands with raised embankments around Skipton and Cononley provide attenuation to some flood peaks.
27098	Calder at Dewsbury	697.0	SE2424121436	424241.0	421436.0	53°41'19.7415"N 1°38'03.8657"W	53.68882	-1.63441	Calder	Dewsbury		EA-Y	F1306	27	1996-11-01		USVA				true	true	true	true	false	false	false	false	false	false	false	false	false		1996-03-30	2023-09-30	16.433	0.0	1996-04-13	1996-04-13	316.0	2022-02-20	2022-02-20	3.53	6.51	9.75	35.7	50.3	0.51	10046	9912	98.666	1996-03-31		265.531	35.4	104.5	242.9	401.2	580.3	1144	1141	0.1537	0.0391	0.455	0.175	0.1493	0.0863	0.0556	0.4333	0.2467	0.1701		0.6407		0.3593	0.0034	0.1763	0.0393	0.51	0.52	0.946	122.6	31.45	42.1	57.1	11.0	53.93	30.11	249	88	0.17	35.5	715.72	0.589	0.757	0.0346	0.0699	0.708	0.635	0.0874	0.79	0.675	1995		gdf;gmf;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic velocity-area station replaced level-only station in 2000. Catchment is heavily reservoired.	Ultrasonic gauge with additional velocity area rating, built October 2000. Situated on a meander 30m wide, around 0.6km d/s of where the Dewsbury Flood Defence Channel rejoins the River Calder. Man-made channel with vertical sided masonry walls, open out to wider channel at around 2.3m stage, wider channel also has vertical sides. Natural channel was canalised in early 1970s (finished end of 1974). Replaced existing river level-only station. Level-only station built in April 1964, and had a pressure transducer from 1975. Station number previously 27835.	Ultrasonic gauge with rating curve based on check gaugings. Ultrasonic used for daily flow records, rating is used to infill periods where ultrasonic data is missing for daily flows. Rating curve has proved more reliable in flood events and is now used as the main source for peak flow data. High vertical walls contain all flows in the section, no known bypassing.	Records pre October 2000 are derived from the rating curve, after that date daily flows are primarily from the ultrasonic gauge but peak flows all derived from rating. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Catchment draining the eastern flank of the Pennines. The geology is predominantly Upper Carboniferous Millstone Grit but includes Lower Coal Measures. Headwaters rise from peat-covered moorland. From rough grazing, very steep, often wooded headwater valleys cut down through Millstone Grit. The valley floors are strongly urbanised and industrialised. Increasing urbanisation in valley bottom towns.	Catchment is heavily reservoired, mainly by small impoundments, but including Walshaw Dean. Estimated 12.2% of catchment drains through around 20 reservoirs. Some abstraction to supply Yorkshire Grid. Also affected by sewage treatment works discharges, leads to diurnal variations in flow.
27099	Derwent at Malton A64 Road Bridge	1360.1	SE812731	481200.0	473100.0	54°08'50.3487"N 0°45'30.0646"W	54.14732	-0.75835	Derwent	Malton A64 Road Bridge		EA-Y	F2809	27	2001-10		US				true	true	true	true	false	false	false	false	false	false	false	false	false		2001-10-07	2023-09-30	16.045	2.49	2022-09-01	2022-09-01	131.0	2021-01-21	2021-01-21	4.5	7.4	11.1	34.9	44.0	0.71	8029	8008	99.738	2001-08-31		67.055	15.2	25.7	125.1	283.2	453.2	798	779	0.1617	0.3898	0.2695	0.1396	0.0285	0.1658	0.4049	0.2775	0.1402	0.011	0.0289	0.5281	0.443		0.0102	0.2679	0.0609	0.35	0.611	0.995	80.5	28.45	32.6	42.7	10.5	73.72	35.12	138	162	0.17	15.2	1382.89	1.122	0.634	0.147	0.0068	0.528	0.769	0.0073	0.714	0.808			gdf;gmf;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Full range multi-path ultrasonic gauge. Flood flows from upper part of catchment diverted to the Sea Cut (measured at 27033).	Full range multipath ultrasonic gauge, installed in 2001 under the A64 road bridge. Flood flows from the upper catchment diverted to the Sea Cut (measured at 27033).	Ultrasonic gauge in relatively straight approach channel. Transducers mounted on sloping racks up to bankfull with higher paths in vertical racks on bridge piers. Some flow behind piers in flood conditions is allowed for in the gauge calculations. Bankfull stage given is channel bank, but all flows contained by higher embankments set back on floodplain.	Issues with the ultrasonic gauge 19/02/10 to 26/04/10, data during this period inaccurate and marked as suspect. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Permeable catchment draining the southern slopes of the North Yorkshire moors, geology consists of Sandstones, grits and limestone of the Middle Oolites overlain by clay in the lower catchment. Contributing catchment area varies due to Sea Cut diversion. Extensive floodplain upstream of gauge. No known catchment changes.	Relatively slow response catchment with significant baseflow component. Artificial influences on flow include straightened sections and drainage for agriculture upstream of the Rye confluence. Flood flows from 88.8 sq.km of the Derwent headwaters are diverted (~6% of the catchment) via the Sea Cut (27033) - relatively small impact downstream of Rye confluence.
28001	Derwent at Yorkshire Bridge	126.0	SK19818509	419810.0	385090.0	53°21'44.3381"N 1°42'13.6384"W	53.36232	-1.70379	Derwent	Yorkshire Bridge	159.4	EA-EM	4001	28	1936-01-01		FL			8.8	true	false	false	false	false	false	false	true	false	false	false	false	false	SRP	1933-01-01	2023-09-30	2.098	0.098	1974-05-05	1974-05-05	99.71	1965-12-09	1965-12-09	0.54	0.836	0.931	4.93	8.364	0.47	33145	33144	99.997				160.0	279.3	424.7	528.7	631.2	1406	1396	0.1433	0.0039	0.3329	0.4713	0.0032	0.1272	0.0007	0.1707	0.6735	0.0016		1.0				0.4678	0.0573	0.48	0.365	0.786	190.7	48.42	43.2	61.9	10.5	19.57	11.21	416	138	0.14	160.0	126.71	0.137	0.92	0.0099	0.0			0.0					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Two shallow flumes with a whaleback divide. Long naturalised series for the Derwent.	Two shallow profile trapezoidal flumes with a whaleback divide since 1936; compound sharp-edged weir previously. Below a cascade of 3 reservoirs (built in 1912, 1916, 1946).	Within basin diversions (Ashop) and imports (Noe); PWS exports. Flume resurfacing works completed in August 2022 returned measurement to original modelled flume rating. For record prior to 2022 a different rating applies as due to impact of poor flume surface.	Long naturalised series available. Monthly naturalised flows 1905-1950 derived from a different source.	Steep moorland catchment, with extensive hilltop peat. Shale and sandstone form the lower parts of the valleys, gritstone tops the hills (Middle Carboniferous).	Flow regime is dominated by Ladybower reservoir outflow. Regular compensation flow for large proportion of each year while reservoirs are not spilling.
28002	Blithe at Hamstall Ridware	163.0	SK10891917	410890.0	319170.0	52°46'12.0593"N 1°50'24.1114"W	52.77002	-1.84003	Blithe	Hamstall Ridware	63.8	EA-WM	4002	28	1937-01-01		B	13.0		15.6	true	true	false	true	false	false	false	true	false	false	false	false	false	SRPGI	1937-10-01	2023-09-30	1.106	0.2	1948-07-30	1948-07-30	38.74	1947-03-17	1947-03-17	0.318	0.433	0.547	2.35	4.049	0.52	31411	28124	89.536	1937-10-01	1952-01-13	17.52	63.6	94.5	144.9	213.0	281.4	779	782	0.0601	0.2354	0.6231	0.0015	0.0612	0.069	0.2275	0.6312	0.0085	0.0456	0.1533	0.0109		0.8358	0.0902		0.5128	0.43	0.464	0.998	41.2	38.16	32.2	40.0	10.9	43.04	20.55	150	143	0.2	63.6	162.11	0.735	0.9	0.0844	0.0212	0.705	1.516	0.0272	0.826	1.639	1952..2022	1952-10-01..2023-10-01	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard broad crested weir by-passed at high flows but providing accurate flows at lower levels - replaced a side contracted flume in 1994. Heavily influenced by Blithfield reservoir.	Originally a side contracted flume with pilot tube tapping. Since 1994 a permanent non-standard, broad crested weir. Pre-barrage fish pass downstream of the weir.	Station bypassed above 13.3 cumecs. Various methods used to rate the flume: temporary sharp-edged weir, formula, current meter and floats. Heavily influenced by Blithfield Reservoir, built in 1952. Naturalised flow series available. Gauged within structure using waded or roped ADCP. Flows have been known to be affected by in-channel and marginal vegetation both up and downstream, though is managed.	Early data is from before the reservoir impounded and therefore does not form a continuous series with present-day records. Post-reservoir data added to the holdings in v12 but rejected for flood estimation. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Catchment mainly drains Keuper Marl and subordinate sandstone, but widely blanketed with Boulder Clay and glacial sand and gravel. Land use mixed farming. Pre-reservoir FARL is 0.998, post-reservoir FARL is 0.873.	Blithfield reservoir built in 1952 - heavily influences the catchment (controls 75% of catchment area).
28003	Tame at Water Orton	408.0	SP16949146	416940.0	291460.0	52°31'14.7342"N 1°45'06.3827"W	52.52076	-1.75177	Tame	Water Orton	74.4	EA-WM	4003	28	1955-01-01		C	100.0		3.3	true	true	true	true	false	false	false	true	false	false	false	false	false	EI	1955-10-01	2023-09-30	5.25	1.37	2011-11-18	2011-11-18	84.88	2007-07-20	2007-07-20	2.068	3.056	3.794	9.319	13.23	0.6	24837	20940	84.31	1955-01-01		79.659	76.0	108.5	141.3	181.7	290.8	731	726	0.0481	0.032	0.135	0.001	0.7382	0.0385	0.0736	0.1293	0.0069	0.7454	0.2716		0.034	0.6944	0.1565		0.4077	0.31	0.497	0.938	33.4	34.21	33.7	41.4	11.0	44.3	24.85	144	95	0.14	76.0	405.6	0.932	0.985	0.1206	0.4029	0.87	0.995	0.5917	0.951	1.027	1954..1991	1982-09-01..1992-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Simple Crump profile weir constructed in 1993 to replace VA gauge subject to backwater influence and weed growth.	Simple Crump profile weir, 8.5m wide, located just upstream of Minworth WRW and trunk sewerage system. Site constructed in 1993 to replace VA gauge subject to backwater influence and weed growth. Channel re-graded in 1974 - channel control became unstable.	The low weir drowns and flow can overtop wing walls. Affected by turbulence. Multiple peak flow ratings applied across period of record, the most recent is valid from February-1993 when crump weir constructed. Gaugings show more scatter at low flows.	Peak flow data 1982-1992 rejected due to abandonment of flow processing during unstable channel period. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Almost fully urbanised catchment of moderate relief in Birmingham. Solid geology: Mercia Mudstone, but subordinate to extensive cover of Boulder Clay and glacial sands and gravel.	Fast responding catchment with effluent baseflow and substantial regime disturbance from imports.
28004	Tame at Lea Marston	795.0	SP206935	420600.0	293500.0	52°32'20.3039"N 1°41'51.7482"W	52.53897	-1.69771	Tame	Lea Marston	65.8	EA-WM	4004	28	1956-01-01	1982-08-30	VA	56.0		2.6	false	true	false	false	true	false	false	false	false	false	false	false	false	EI																			1956-01-01	1982-03-31	61.454	66.7	93.7	131.6	168.9	290.8	722	716	0.0861	0.1503	0.2073	0.0005	0.5237	0.0485	0.1953	0.2164	0.0072	0.526	0.1386		0.0197	0.8417	0.1825	0.0047	0.3284	0.3	0.471	0.946	30.6	36.22	32.9	40.8	10.8	53.21	29.02	132	79	0.11	66.7	794.74	0.912	0.974	0.1176	0.2707	0.862	1.082	0.3827	0.944	1.116			cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station replaced by Lea Marston Lakes (28080) in 1982.	Station replaced by Lea Marston Lakes (28080) in 1982.	Gauging carried out from bridge and includes all flows. However, difficulties in measuring floodplain flows due to configuration of floodplain and location of gauging station. One rating applied across period of record to 1982. Doubt over the continuation of the curve above bankfull. Large scatter in the gaugings at all levels. QMED is calculated to be 50% less than that at the new site Lea Marston Lakes (28080).	Station flows merged into records for station 28080.	Alluvial and clay drift underlain by Keuper Marl. Heavily built up - Birmingham and Black Country.	Runoff increased by effluent returns. Runoff reduced by industrial/agricultural abstraction.
28005	Tame at Elford	1475.0	SK173105	417300.0	310500.0	52°41'30.8822"N 1°44'43.7213"W	52.69191	-1.74548	Tame	Elford	49.7	EA-WM	4005	28	1955-01-01	1984-08	VA	66.0		2.74	true	true	false	false	true	false	false	false	false	false	false	false	false	EI	1955-12-08	1984-08-31	19.179	2.79	1984-07-24	1984-07-24	208.5	1981-12-31	1981-12-31	8.184	11.48	14.35	35.4	47.61	0.65	10495	10495	100.0	1955-01-01	1992-02-12	107.702	51.8	77.5	117.1	160.1	290.8	702	689	0.0819	0.2903	0.2373	0.0005	0.3651	0.0479	0.358	0.2275	0.0108	0.3471	0.1733		0.0202	0.8066	0.1542	0.0025	0.3389	0.3	0.496	0.939	29.4	35.5	32.5	40.3	10.7	79.31	45.81	119	75	0.05	53.9	1485.67	1.093	0.92	0.1329	0.1752	0.843	1.177	0.2425	0.932	1.2	1955		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station closed in 1984. Measurement recommenced at Hopwas Bridge (28095) a short distance upstream in 2001. Substantial flow modification from large imports and industrial/agricultural abstraction.	Velocity area station Replaced by Hopwas (28095) a short distance upstream.	Cableway spans river channel only; no measurement of bypassing on rb where there is a broad floodplain. One rating applied across period of record. Never satisfactorily gauged beyond limit of cableway (bankfull). Severe summer weed growth requires rating shifts as flows below bankfull are subject to large error.	High flows from the site should be treated with caution.	Substantially urbanised catchment; containing much of Birmingham City and mixed farming land use. Geology dominated by Keuper Marl and Permian and Triassic Sandstones overlain by Boulder Clay and glacial sand and gravel in equal proportions.	Substantial flow modification through large imports and significant storage in river gravel terraces. Runoff cab be increased by effluent returns or reduced by industrial/agricultural abstraction.
28006	Trent at Great Haywood	325.0	SJ99362309	399360.0	323090.0	52°48'19.3040"N 2°00'39.3654"W	52.80536	-2.01093	Trent	Great Haywood	69.5	EA-WM	4006	28	1955-01-01	1964-09-30	VA	33.0		6.8	true	false	false	false	false	false	false	false	false	false	false	false	false	SGE	1957-10-01	1964-09-30	4.447	1.657	1964-09-13	1964-09-13	42.48	1960-12-05	1960-12-05	2.144	2.888	3.398	7.306	10.42	0.71	2557	2557	100.0				71.4	94.6	143.7	201.4	331.3	809	798	0.0635	0.1462	0.5341	0.0033	0.2498	0.0673	0.1291	0.5529	0.0163	0.2301	0.1173	0.0249		0.8578	0.0562		0.4946	0.44	0.473	0.962	57.6	34.72	31.6	39.8	10.2	52.21	28.59	146	209	0.18	71.4	321.07	1.044	0.769	0.0936	0.1254	0.799	1.312	0.1419	0.872	1.285			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with broad floodplain with runoff affected by reservoirs, effluent returns and groundwater abstraction/recharge.	Velocity area station with broad floodplain. Removed from peak flows dataset in May 2016 (WINFAP Files v4).	High flows measured by current meter from bridge - all flows contained through bridge. Station suffers from a shifting downstream control and bed movements have rendered the site unsuitable for the processing of flows in recent years, with lots of variation evident in the gaugings taken. The station has a broad floodplain on the left bank and out of bank flows occur readily. A canal aqueduct downstream of the site may control flood levels and flows. Wide scatter is evident in spot gaugings at all levels.		Moderate catchment relief, significant urban fraction in upper catchment (Stoke-on-Trent and Newcastle-under-Lyme). Keuper Marl. Rural except for Potteries.	Reservoir(s) in catchment affect runoff. Runoff influenced by groundwater abstraction/recharge. Runoff increased by effluent returns.
28007	Trent at Shardlow	4400.0	SK44802996	444800.0	329960.0	52°51'54.9542"N 1°20'09.4993"W	52.86527	-1.33597	Trent	Shardlow	29.0	EA-EM	4007	28	1955-01-01		IV			5.9	true	true	true	true	false	false	false	false	false	false	false	false	false	SRPG	1957-10-01	2023-09-30	51.692	9.118	1959-10-05	1959-10-05	705.7	2000-11-07	2000-11-07	17.49	27.47	36.35	105.9	143.1	0.65	24106	15097	62.628	1937-10-01		249.102	28.6	71.8	120.1	221.0	546.1	761	751	0.0741	0.2665	0.4354	0.0054	0.2023	0.0647	0.3011	0.4309	0.0174	0.1773	0.2007	0.1298	0.0068	0.6627	0.107	0.0017	0.3207	0.32	0.518	0.954	46.1	33.82	32.2	40.0	10.5	132.23	86.14	136	140	0.07	28.6	4395.43	1.217	0.899	0.1237	0.0872	0.81	1.163	0.1176	0.905	1.174	1990		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Sidelooker horizontal ADCP, using index velocity method to derive flows from 15/02/2008 onwards. Velocity Index gauge replaced multipath cross-configuration Ultrasonic Time of Flight gauge in 1991. Prior to 1991, gauge had a non-operational velocity-area rating which was not suitable to process flow due to being subject to variable backwater influence of the River Derwent and weed growth.	Index-Velocity station in the navigable Trent. Main channel approximately 45m wide. Gauged using ADCP boat. Station re-opened in the peak flows dataset in September 2022 (WINFAP Files v11).	Originally a VA station but prone to error due to variable backwaters. Multipath cross-configuration Ultrasonic Time of Flight station installed 1991. Four major flood relief culverts on right bank and one major culvert on left bank. Velocity Index station since 2008 has been fully calibrated to highest flood flows which includes all bypass flow in a two wage index velocity equation and can be used with confidence across the full flow range from this date onwards. Original TOF gauge (1991 to 2008) did not record out of bank flows accurately as large areas of unmeasured bypass flow. Given the low frequency of such flow during the TOF gauged record an attempt was made to estimate flow at flows above bankfull. Flows are considered accurate based on extrapolation of recent high flow bypass gaugings. Early high flow current meter gaugings appear inaccurate compared to ADCP flood gaugings.	Chart record commences 01/01/1955 with a complete record. Digital record commences 31/12/1982. Station could reliably be used for level only POT from 1955 to 1991, hence POT flow record commences 1991. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Large catchment which contains much of Birmingham City. The Trent headwaters have small outcrops of Coal Measures whilst the Dove catchment is dominated by Millstone Grit and Carboniferous Limestone. Approx 25% of the catchment is overlain by Boulder Clay, 10% valley gravels, terraces and alluvium. Drift free areas are largely Keuper Marl and sandstone. Diverse land use from moorland to industrial.	Very substantial flow modifications owing to imports, WRW, cooling water and industrial usage. Reservoir(s) in catchment affect runoff. Regulation from surface water and/or ground water. Runoff reduced by public water supply abstraction and increased by effluent returns. Runoff influenced by groundwater abstraction/recharge.
28008	Dove at Rocester Weir	399.0	SK11243967	411240.0	339670.0	52°57'15.4468"N 1°50'02.9159"W	52.95429	-1.83414	Dove	Rocester Weir	86.3	EA-WM	4008	28	1953-01-01		VA		50.0	14.7	true	true	false	true	false	false	false	true	false	true	false	false	true	N	1953-10-01	2023-09-30	7.565	0.615	1959-09-09	1959-09-28	101.0	1991-12-21	1991-12-21	1.79	3.449	5.31	15.7	21.0	0.62	25567	25567	100.0	1954-01-01		86.245	84.1	159.4	274.7	370.5	546.1	1020	1022	0.0604	0.0765	0.8074	0.0146	0.0241	0.0566	0.0323	0.8595	0.0356	0.0083	0.0847	0.9121		0.0032	0.0014	0.0059	0.1305	0.41	0.555	0.991	112.6	24.77	35.8	45.3	10.4	53.62	30.16	270	147	0.14	84.1	397.97	0.488	0.787	0.0405	0.0034			0.0073	0.659	0.676			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with old mill weir acting as a rather insensitive control.	Velocity area station approximately 19.8m wide. Hydro-electric power scheme and larinier fish pass added to control structure in 2011.	Station bypassed when out of bank (3-4 times per year). Weir crest prone to algal growth. Gauging from a footbridge and more recently by remote controlled ADCP adjacent to gauge board, downstream of bridge. No gaugings above bankfull hence little confidence in rating above this point. Two ratings cover period or record, revised in 2016.	Early flow data of lower quality than later records, due to readings taken from gauge boards. Period-of-record maximum flow is listed as 132.3 cumecs in Dec 1991. The Dec 1960 peak had a higher stage but the derivation of the flow cannot be verified. The two events were of a broadly similar magnitude. Rating from 25/11/2011 accounts for fish pass and hydroelectric power scheme. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	A predominantly upland catchment in which the headwaters drain Millstone Grit and Carboniferous Limestone. Lower reaches are Permain and Triassic Sandstones and Triassic Mudstone. Some superficial deposits within river valleys. Land use is predominantly moorland and pasture.	Flows natural to within 10% at the 95 percentile flow.
28009	Trent at Colwick	7486.0	SK62013996	462010.0	339960.0	52°57'12.3934"N 1°04'42.4409"W	52.95344	-1.07846	Trent	Colwick	16.0	EA-EM	4009	28	1958-01-01		VA	550.0		2.56	true	true	true	true	false	true	false	false	true	true	true	true	true	SRPGEI	1958-10-01	2023-09-30	85.879	14.7	1976-08-23	1976-08-23	982.0	2000-11-08	2000-11-08	28.0	42.3	59.24	178.0	243.0	0.63	23741	23741	100.0	1958-09-01		440.397	17.5	64.2	118.6	273.7	635.5	771	760	0.0723	0.2726	0.4333	0.0154	0.19	0.0659	0.3121	0.4203	0.0343	0.1596	0.1442	0.1946	0.0977	0.5634	0.0834	0.0126	0.3405	0.31	0.505	0.944	53.7	34.23	32.5	41.1	10.6	159.55	96.63	142	134	0.06	20.4	7466.4	1.238	0.884	0.1158	0.0773	0.802	1.041	0.105	0.898	1.047			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in the navigable Trent.	Velocity area station in the navigable Trent. Main channel approximately 62m wide. Large navigation weir 2.5 miles downstream provides the hydraulic control for the flow equation.	Holme sluices 750m upstream affect water levels up to medium flows. Bypassed at high flows on right bank more frequently historically prior to construction of Holme Pierrepoint National Watersports Centre in the 1980s. Flow is now contained to a higher stage but bypassing can still occur at extreme peaks. Hydro-power scheme installed in 2015 in old navigation lock. Fish pass installed in 2023 around upstream sluices. One rating applied across period of record.	Station is insensitive below Q95. High flow rating above 200 cumecs appears to be overestimating discharge and will be reviewed soon. Levels in 2011 possibly affected by left bank flood alleviation scheme. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly Mercia Mudstone geology with some Permian and Triassic Sandstone and Carboniferous Limestone. Extensive terrace gravels and alluvium within river valleys maintain baseflow.	Very substantial flow modifications owing to public water supply abstraction, effluent returns, cooling water and industrial usage. Reservoir(s) in catchment affect runoff. Runoff influenced by groundwater abstraction/recharge.
28011	Derwent at Matlock Bath	690.0	SK296586	429600.0	358600.0	53°07'25.5168"N 1°33'32.8874"W	53.12375	-1.55914	Derwent	Matlock Bath	83.2	EA-EM	4011	28	1958-01-01	2004-05	VA	170.0		6.6	true	true	false	true	false	false	false	false	false	false	false	false	false	SRPGEI	1958-10-01	2004-05-06	12.986	0.861	1959-10-14	1959-10-14	267.6	2000-11-06	2000-11-06	3.282	5.725	8.71	27.39	37.0	0.64	16655	16512	99.141	1958-01-11	2004-05-01	113.921	88.5	170.7	311.9	452.3	635.5	1128	1114	0.1077	0.0482	0.6457	0.1293	0.0357	0.1165	0.0187	0.5983	0.2393	0.0208		0.9615		0.0385	0.0104	0.1256	0.0454	0.41	0.565	0.947	133.9	26.13	37.5	51.1	10.0	58.22	34.05	311	127	0.12	88.5	687.18	0.373	0.783	0.0303	0.0074	0.507	0.774	0.0154	0.721	0.736	1957..2013		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a deep channel with long record of flows. Processing of flows ceased in 2004 as low flow rating poor due to shifting section control. Station replaced with downstream gauge at Whatstandwell.	Velocity area station about 20 m wide in a deep channel.	Open channel site with cableway. Rated with two ratings applied across period of record, the most recent is valid from January-2001. No gaugings above bankfull but rating fits gaugings well up to the level of the highest gauged flow (3.1mASD). Highest floods will bypass along the adjacent A6 road.		Responsive upland catchment. Geology predominantly Millstone Grit with some Coal Measures to the east and Carboniferous Limestone in the west draining The Wye. Peat covered moorlands occur in the headwaters with forestry and pasture elsewhere.	Substantially affected by Derwent reservoirs and mill operation, particularly in the early record.
28012	Trent at Yoxall	1229.0	SK13211772	413210.0	317720.0	52°45'24.9497"N 1°48'20.5294"W	52.75693	-1.8057	Trent	Yoxall	56.4	EA-WM	4012	28	1959-01-01		US	165.0		4.12	true	true	false	true	false	false	false	true	false	false	true	false	false	SRPGEI	1959-10-01	2023-09-30	12.665	1.898	1976-08-27	1976-08-27	173.6	2019-10-27	2019-10-27	4.57	7.385	9.51	23.59	32.9	0.68	23376	23359	99.927	1959-08-01		65.041	58.2	86.5	121.0	184.9	331.3	761	746	0.0778	0.2527	0.4848	0.0099	0.1648	0.0827	0.2784	0.4798	0.0187	0.1326	0.2714	0.0081		0.7205	0.0902		0.3639	0.35	0.52	0.951	41.7	33.98	31.2	38.9	10.5	72.87	41.35	129	177	0.07	58.3	1206.6	1.04	0.911	0.1145	0.065	0.773	1.226	0.0812	0.863	1.224	1975..1986	1980-10-01..1987-10-01	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauge on the upper Trent, previously an electromagnetic and velocity area station.	Two velocity-area sites were used prior to December 1994. The first (just d/s of bridge) opened 1959 and closed after river re-grading in 1976, the second and current site (50 m d/s of original site) began in 1974. Replaced with an electromagnetic gauge in December 1994. Following failure of the electromagnetic gauge, an ultrasonic gauge was installed in 2011. Located just downstream of a major road bridge and a smaller single track arched bridge.	Severe weed growth requires summer rating adjustments. Cableway measured in-channel flows (some eddying below bridge, can cause reversal of flows at cableway). Cableway bypassed by highest flows. Multiple ratings applied across period of record, revised in 2016 and 2024. Many gaugings, but wide scatter as a result of weed growth in summer. Current rating is a better fit to out of bank flows, but is not applied to earlier record.	Training bank built on the right banks in 1986 prevents out-of-bank flows re-joining river just upstream of gauging station. Large floods can still spill out-of-bank upstream of the training banks on the right bank, and bypass the station, flowing through two flood relief culverts under the road. Peak flows rejected as unrepresentative of the catchment from 1980-1987 because interpolation of flow data did not providing accurate representation of on-site conditions. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Large diverse catchment with Coal Measures in the headwaters and Triassic Mudstone and Permain and Triassic Sandstones elsewhere. Approx 30% Boulder Clay and Till deposits with large gravel terraces providing storage alongside the main river. Mixed farming, sand and gravel extraction, industrial development.	Significant modification to flows including reservoir(s) in catchment and regulation from surface water and/or ground water. Runoff is influenced by groundwater abstraction/recharge and effluent returns, and is reduced by industrial/agricultural/public water supply abstraction.
28014	Sow at Milford	591.0	SJ97542153	397540.0	321530.0	52°47'28.7989"N 2°02'16.5120"W	52.79133	-2.03792	Sow	Milford	69.4	EA-WM	4014	28	1960-01-01	2011-03-31	VA	35.0		5.6	true	false	false	false	false	false	false	false	false	false	false	false	false	GE	1960-01-01	2011-03-31	6.333	0.391	1965-11-16	1965-11-16	69.74	2000-11-07	2000-11-07	1.667	3.375	4.817	11.99	15.88	0.69	18718	12505	66.807				72.0	88.4	111.2	152.6	234.6	736	713	0.0654	0.321	0.4376	0.0048	0.1591	0.0661	0.381	0.4209	0.0099	0.1152	0.3348	0.0		0.6652	0.1049		0.2868	0.33	0.521	0.96	30.9	34.39	30.4	38.0	10.4	44.5	25.09	117	210	0.01	72.0	584.85	0.966	0.9	0.1277	0.0497	0.756	1.051	0.0715	0.861	1.079			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Vertical-area station immediately downstream of Holdiford Road bridge.	Vertical-area station; channel about 25m wide.	Cableway spans 38m. Subject to severe weed growth (retrospective correction of rating made) and siltation; variable and imprecise low flows. Channel regraded 1964-7.	Flows not processed between 1977-92.	Low relief catchment, rural west, urbanised south and east. Geology: predominantly Keuper Marl in west, with Permian and Triassic sandstones in east. Appreciable Boulder Clay in south. Approx 15% of the catchment is urban with other landuse consisting of some mixed farming, light industry and some forestry.	Flows significantly augmented from WRW (Cannock, Stafford).
28015	Idle at Mattersey	529.0	SK69018952	469010.0	389520.0	53°23'52.8255"N 0°57'48.9737"W	53.39801	-0.9636	Idle	Mattersey	3.8	EA-EM	4015	28	1961-01-01		IV	15.0			true	true	true	true	false	false	false	true	false	false	true	false	false	SRGE	1982-11-01	2023-09-30	2.398	0.187	1996-07-21	1996-07-21	19.2	2007-06-26	2007-06-26	0.849	1.51	1.95	4.18	5.48	0.78	14944	14864	99.465	1958-09-01		9.846	5.7	20.7	69.9	149.3	205.0	652	650	0.1683	0.4694	0.1682	0.0214	0.16	0.1815	0.5485	0.1327	0.0159	0.1131	0.7678			0.2322	0.0734	0.0073	0.0817	0.27	0.787	0.904	32.7	18.92	32.3	41.4	11.4	62.61	39.39	77	68	0.2	5.7	528.18	0.769	0.692	0.1188	0.0674	0.748	1.169	0.0705	0.868	1.211	1972..1985		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station flow derived from ADCP to replace previous electromagnetic and earlier velocity area stations in a slow responding rural catchment.	Originally velocity area station; electromagnetic gauge since 1982 in reach between two bridges and trapezoidal flood banks. Primary recording switched to Side-looking ADVM 4th July 2015 then to a bed mounted ADVM from 23rd Jan 2018. Flood flows fully contained.	Original velocity area station was prone to severe seasonal weed growth and unstable ratings due to variable backwater effect. Over-bank flow occurring above 1.9m inundating a wide floodplain. In Jan 1982 the channel was re-graded and rating relationship altered considerably; levels fell and velocities increased. The flow series from pre and post the electromagnetic gauge (installed 1982) are not consistent. 1982-1994 shows good agreement to spot flow gaugings. 1994-2015 shows under-recording of flows with a bias of -6.7%. ADCP installed September 2014 to run in parallel to electromagnetics during calibration. Primary flow derived from ADCP after lightning strike rendered electromagnetic gauge inoperable in November 2015.	Pre-electromagnetic data (1965-82) removed as unreliable. Gauge failed in 2000 floods but peak flow was gauged. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Low relief catchment, moderate in headwaters. Tributaries rise on Magnesian Limestone, then traverse outcrop of Sherwood Sandstone. Lower reaches underlain by alluvium and Mercia Mudstone. A portion of the catchment is urban, with Mansfield in the headwaters. Otherwise land use is predominantly rural, arable farming.	Generally slow response. Reservoir(s) in the catchment together with significant abstraction and effluent returns affect runoff.
28016	Ryton at Serlby Park	231.0	SK641897	464100.0	389700.0	53°24'00.8736"N 1°02'14.6340"W	53.40024	-1.0374	Ryton	Serlby Park	5.6	EA-EM		28	1965-01-01	1978	VA	37.0		9.8	true	false	false	false	false	false	false	false	false	false	true	false	false	E	1965-07-01	1978-07-31	1.752	0.15	1975-09-05	1975-09-05	19.86	1977-02-25	1977-02-25	0.445	0.98	1.267	3.231	4.42	0.7	4779	4779	100.0				7.1	22.4	61.2	120.9	156.0	625	645	0.1183	0.5537	0.1596	0.0006	0.157	0.0982	0.634	0.1357	0.0062	0.1223	0.6598			0.3402	0.0001	0.0006	0.0622	0.3	0.759	0.958	31.4	17.77	31.7	41.7	11.4	44.81	22.77	70	79	0.26	7.1	232.75	0.574	0.913	0.0933	0.067	0.768	1.095	0.0703	0.863	1.108			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station closed in 1978 and superseded by Blyth (Ryton) 28091.	Velocity area station closed in 1984 and superseded by Blyth (Ryton) 28091.	Not satisfactorily rated until 1971. Massive amount of scatter in the spot gaugings at all levels, therefore stage-discharge relationship not adequate to derive flows. Natural section controlled by river regime. Current meter readings show considerable scatter. Weed affects low/med flows - seasonal rating curves.		Bunter sandstone, Middle Permina Marl and Magnesian limestone. Rural catchment.	Summer flows unreliable due to erratic behaviour (possibly weed growth). Runoff increased by effluent returns.
28017	Devon at Cotham	284.0	SK78754771	478750.0	347710.0	53°01'15.2475"N 0°49'38.8371"W	53.0209	-0.82745	Devon	Cotham	11.0	EA-EM	4017	28	1966-01-01	1978	VA	32.0		25.3	true	false	false	false	false	false	false	false	false	false	false	false	false	E	1966-10-01	1978-04-30	1.572	0.01	1976-04-28	1976-04-28	28.14	1977-02-25	1977-02-25	0.132	0.356	0.671	3.724	5.693	0.53	4230	4192	99.102				16.8	23.9	46.3	123.1	176.4	593	592	0.0411	0.5553	0.3346		0.0636	0.0441	0.6493	0.2868	0.0024	0.0161	0.012		0.757	0.2311	0.0136		0.2173	0.27	0.382	0.98	28.1	44.21	30.1	38.6	10.3	36.86	20.05	54	19	0.2	16.8	280.64	1.628	0.739	0.2465	0.015	0.015	0.799	0.013	0.712	0.862			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, closed in April 1978.	Velocity area station just upstream of a double arch masonry bridge. Became level-only in April 1978 due to unreliable rating, and converted to chart/logger site in 1984. Station closed December 2003, replaced by Wensor Bridge electromagnetic station. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Site suffers from weed growth at low flows. One rating applied across period of record. Rating is of poor quality underestimating flows throughout the range. No gaugings above bankfull. Suspicion that flows underestimated. Flood Studies Report grade A2 for flood flows.	Data gaps exist in 1976 with summer 1976 flows under review.	Area consists of Keuper Marl, Liassic clays and Oolite. Quaternary deposits include glacial till and alluvium. Some inferior Oolite limestone at the watershed. Largely agricultural catchment land use. Catchment boundary manually digitised due to issue with IHDTM incorrectly connecting streams in the lower catchment.	Runoff increased by effluent returns. Some small reservoirs. An extensive network of field drains in the lower part of the catchment could retain much runoff.
28018	Dove at Marston on Dove	883.2	SK23742884	423740.0	328840.0	52°51'23.5209"N 1°38'55.9501"W	52.85653	-1.64888	Dove	Marston on Dove	47.2	EA-WM	4018	28	1961-10-01		FVVA	130.0		5.8	true	true	true	true	false	true	false	true	false	true	true	true	true	SRPG	1961-10-01	2023-09-30	13.78	1.62	1976-08-23	1976-08-23	168.0	2000-11-06	2000-11-06	3.54	6.49	9.599	28.26	39.6	0.61	22645	22645	100.0	1959-08-01		113.0	45.5	97.9	210.2	342.1	546.1	935	935	0.0775	0.1154	0.7413	0.0124	0.0411	0.0786	0.0779	0.7812	0.0314	0.0242	0.1158	0.6016		0.2826	0.0329	0.0044	0.264	0.42	0.528	0.976	91.9	30.17	34.3	43.1	10.4	87.71	52.73	217	157	0.14	48.7	884.07	0.895	0.678	0.0748	0.0091	0.606	0.899	0.0143	0.765	0.901	1972	1973-05-31..1973-09-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station replaced in 1974 with flat V Crump profile weir.	Velocity area station up to 1974 (bankfull 3.0m), when a Flat V Crump profile weir was installed. Very wide floodplain. Cableway removed in 2014 - flow gaugings carried out just downstream of the road bridge, upstream of the main station building. Fish pass introduced in 2016.	Site is prone to weed growth and not reliable at high flows as drowns out and has a very wide floodplain. Cableway 100 yards upstream, but river breaks out of bank upstream of cableway. Four peak flow ratings applied across period of record, the most recent is valid from November 2016 following fish pass installation. Ratings reviewed in 2023 where flows from 2016 were reprocessed. Double bank produces 2 break points on curve. Upper limb of current rating derived from hydraulic model. High flow gaugings have been taken at full range of flows up to 151m3/s and give a good confidence of using rating 9 at all in bank flows. Cableway measures in bank flows only and gaugings have never been taken on the floodplain or Tutbury Mill Fleam and so out of bank flows are not represented.	Small bypass (Tutbury Mill Fleam) included in naturalised flow series (<10% of flow at low flows, not as important at high flows). Levels thought to be overestimated between 31/05/1973 and 01/09/1973. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Middle and upper reaches drain over Carboniferous Limestone and Millstone Grit. Lower reaches broad and meandering. Below Rocester, Sherwood Sandstone and Mercia Mudstone dominate. Land use is predominantly pasture, forestry and mixed farming.	Storage in alluvium, terrace and fluvio-glacial gravel. Reservoirs in the catchment together with significant public water supply abstractions from surface water and/or ground water affect runoff. Moderately affected by imports.
28019	Trent at Drakelow Park	3072.0	SK23912039	423910.0	320390.0	52°46'50.0404"N 1°38'49.0775"W	52.78057	-1.64697	Trent	Drakelow Park	43.0	EA-WM	4019	28	1966-01-01		VA	200.0		3.5	true	true	true	true	false	false	false	true	false	false	false	false	false	PGE	1966-06-01	2023-09-30	36.103	6.002	1976-08-23	1976-08-23	350.6	2000-11-07	2000-11-07	13.96	20.9	26.89	67.26	91.4	0.65	20941	20883	99.723	1959-06-01		176.161	44.3	76.4	115.2	168.0	331.3	722	707	0.0769	0.2973	0.349	0.0042	0.2548	0.0623	0.3483	0.3364	0.0145	0.2299	0.2221	0.0032	0.0098	0.765	0.1299	0.0012	0.3387	0.31	0.512	0.948	34.2	34.72	31.8	39.4	10.6	96.55	58.18	120	126	0.04	44.6	3066.7	1.207	0.897	0.1319	0.1149	0.821	1.196	0.1544	0.912	1.214	1958..1992		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with complex rating history owing to river regrading in 1965 and 1973 draining a very large catchment that contains urban and industrial land use.	Velocity area station. The left bank is a low lying golf course that is inundated from 2.68mASD. Cableway removed in 2014 - flow gaugings still performed in old cableway section.	Complex rating history owing to river re-grading (1965 and 1973). Multiple peak flow ratings, particularly since 2001. High flow precision limited by ungauged flow over the left bank. Much storage in valley gravels. A number of gaugings have been taken to assess out of bank flows; on 1/11/00 gaugings taken at 3.216mASD showed floodplain flow to be 26% of the total flow of 252m3/s.	Summer flows reprocessed in 2010 for the period 2006-2010 to account for weed growth. 2011 flows reprocessed to account for severe weed growth. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7). The majority of low flows (~<15 m3/s) between 16 July - 30 September 2018 are flagged as suspect.	Very large catchment. Small areas of Coal Measures in the Stoke area. Approx 25% of the catchment is overlain by Boulder Clay and 10% by valley gravel, terraces and alluvium. Drift free areas mostly Triassic Mudstones and Triassic and Permian Sandstones. A large area of the catchment is urban with large urban industrial areas, otherwise, the main land use is mixed farming.	Flows substantially modified, particularly by imports into the Tame system.
28020	Churnet at Rocester	236.0	SK10313890	410310.0	338900.0	52°56'50.5953"N 1°50'52.8368"W	52.94739	-1.84801	Churnet	Rocester	81.4	EA-WM		28	1954-01-01	1982-12-31	VA	32.0		6.7	true	false	false	false	false	false	false	false	false	false	false	false	false	SRPGE	1954-10-01	1982-07-31	3.675	0.368	1959-08-16	1959-09-21	33.41	1977-02-11	1977-02-11	0.957	1.6	2.358	7.685	10.65	0.55	10166	9833	96.724				82.7	148.1	215.8	318.9	501.2	949	956	0.1246	0.067	0.7225	0.0216	0.0529	0.1367	0.0475	0.7304	0.0424	0.0345	0.159	0.7115		0.1295	0.0049	0.0064	0.363	0.44	0.498	0.936	101.8	32.73	34.5	42.4	10.3	47.95	28.62	224	217	0.14	82.7	234.34	0.603	0.925	0.0506	0.0143	0.649	1.086	0.021	0.78	1.026			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with flows significantly affected by abstractions and effluent returns.	Velocity area station. 500m d/s of Podmore's Mill, Rocester. Situated in a straight, deep reach of the river with tress on both banks.	All three ratings used are virtually identical and fit the spot gaugings very well. No gauging above bankfull. Prone to weed growth and silt movement. Gaugings taken from a footbridge present at the site. Replaced by Rochester JCB (4220) in March 1987, which has subsequently been replaced by Quixhill (4142). Gauge measures to bankfull, but is bypassed during large floods and water spreads across large floodplain and down to the confluence with the River Dove.		Mainly Dinantian Limestone, Namurian Sandstone and shales and coal measures. Keuper Marl and Triassic sandstone also occur.	Reservoir(s) in catchment affect runoff. Regulation from surface water and/or ground water. Runoff reduced by public water supply abstraction. Runoff influenced by groundwater abstraction/recharge. Runoff increased by effluent returns.
28021	Derwent at Draycott	1175.0	SK44253279	444250.0	332790.0	52°53'26.6951"N 1°20'37.5272"W	52.89075	-1.34376	Derwent	Draycott	30.0	EA-EM		28	1965-01-01	1977-12-31	VA	115.0		9.7	true	false	false	false	false	false	false	false	false	false	false	false	false	SRPGEI	1965-07-01	1977-12-31	18.707	2.11	1972-05-30	1972-05-30	154.7	1965-12-10	1965-12-10	5.881	10.84	13.66	34.93	47.96	0.66	4567	4423	96.847				32.4	92.4	238.7	404.7	635.5	984	980	0.0913	0.118	0.5919	0.0758	0.1004	0.1	0.12	0.559	0.1447	0.0712	0.0141	0.7528		0.2331	0.017	0.0736	0.0954	0.38	0.55	0.951	109.1	27.35	35.8	47.3	10.3	104.92	61.82	241	134	0.14	32.4	1172.35	0.643	0.649	0.0523	0.0307	0.721	0.487	0.0483	0.849	0.551			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, closed in 1977 and superseded by station 28067.	Velocity area station, closed in 1977 and superseded by 28067.	A deteriorating weir downstream meant a new rating was needed from Dec 1968. Current metering does not extend to mean annual flood. Bypassed over right bank (yearly) at 34.11mAOD.	January 1975 flows erroneous.	Large catchment with moorland headwaters on Carboniferous Grit and Limestone. Lower reaches on Sherwood Sandstone and Mercia Mudstone. Valley broadens considerably below Derby with extensive sand and gravel terraces. Range of agricultural and industrial activity. Millstone grit with Carboniferous Limestone on west side of catchment and Keuper Marl near gauge. Three reservoirs in upstream of catchment control 10% of catchment.	Reservoir(s) in catchment affect runoff. Regulation from surface water and/or ground water. Runoff reduced by public water supply abstraction. Runoff influenced by groundwater abstraction/recharge. Runoff increased by effluent returns. Runoff reduced by industrial/agricultural abstraction.
28022	Trent at North Muskham	8231.0	SK80436056	480430.0	360560.0	53°08'10.0916"N 0°47'57.1445"W	53.13614	-0.79921	Trent	North Muskham	4.9	EA-EM	4022	28	1967-01-01		USVA			7.9	true	true	true	true	false	false	false	true	true	false	true	false	false	SRPGEI	1968-10-01	2023-09-30	89.937	11.54	1976-08-27	1976-08-27	924.0	2000-11-09	2000-11-09	28.05	44.92	63.05	183.7	253.1	0.64	20088	20088	100.0	1966-09-01		426.126	4.8	50.7	112.7	260.2	635.5	756	747	0.0699	0.2986	0.4178	0.0142	0.1836	0.0647	0.3416	0.4032	0.0314	0.1511	0.1386	0.177	0.117	0.5674	0.0828	0.0114	0.3311	0.3	0.502	0.946	51.6	34.76	32.3	40.9	10.6	202.13	129.73	134	122	0.06	8.9	8209.42	1.563	0.833	0.131	0.0735	0.796	1.065	0.0994	0.896	1.074	1967		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station built in 1968 and replaced by ultrasonic gauge in 1996: the station provides the lowest Trent gauge above the tidal limit and drains a highly industrial catchment with substantial flow modifications.	Velocity area station from 1968 to 1996. An ultrasonic gauge was installed in 1996. Highest transducer 7m. The station provides the most downstream gauge on the Fluvial Trent and lies immediately upstream of Cromwell Weir (Trent tidal limit).	Single rating applied to period of record. Station flows form a hybrid record after August 1996 when the time of flight ultrasonic flow meter is used to measure flows below a stage of 3.0 metres. Out of bank flows are calculated from the rating above this stage when the transducers are bypassed on the right bank. Floodplain becomes active from a stage above 3.0 mASD.	Station record at low flows prior to 1996 processed using rating equation and are less accurate than the Ultrasonic Record. At high flows the rating has been fit to gaugings up to a stage of 3.693 metres taken at Holme where the full river can be measured before the channel bypasses on the right bank. Events in 1977 and 2000 were gauged via a cableway but did not included bypass flow. The rating has carefully estimated the extent of bypass and is considered as accurate to the highest level observed in November 2000. Significant hysteresis is evident in the flow record between flows of 300 and 500 m3/s due to variable drowning of Cromwell Weir caused by tidal effects. The high flow rating has been fit to the rising limb gaugings so represents an over estimation of flows on the falling limb of the hydrograph at the flows. Hysteresis becomes less dominate at flows in excess of 500 m3/s. Corrections to the falling limb hydrograph have been made from 1996 onwards as the ultrasonic flow gauge shows the extent of hysteresis. Prior to 1996 no correction for hysteresis is possible on the falling limb of the flood hydrograph. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Largest gauged catchment on Trent, with range of land use. Predominantly impervious owing to glacial clay and Mercia Mudstone, but some sandstone and limestone (Dove, Derwent and downstream of Nottingham).	Very substantial flow modifications owing to imports, WRW, cooling water and industrial usage. Reservoir(s) in catchment affect runoff. Regulation from surface water and/or ground water. Runoff reduced by public water supply abstraction and increased by effluent returns. Runoff influenced by groundwater abstraction/recharge.
28023	Wye at Ashford	154.0	SK18256968	418250.0	369680.0	53°13'25.8865"N 1°43'41.1944"W	53.22386	-1.72811	Wye	Ashford	139.0	EA-EM	4023	28	1965-01-01		FV	32.0		9.3	true	true	true	true	false	false	false	true	false	false	false	false	false	PGE	1965-08-01	2023-09-30	3.362	0.568	1971-10-14	1971-10-14	30.67	1998-10-27	1998-10-27	1.048	1.794	2.69	6.424	8.03	0.75	21245	15008	70.643	1965-07-01		16.81	141.5	281.6	334.8	414.0	550.5	1202	1165	0.0358	0.0202	0.8228	0.0208	0.0201	0.0781	0.0043	0.8015	0.0809	0.0335		1.0				0.0392		0.52	0.678	0.976	117.7	14.32	37.4	51.1	10.0	26.54	16.46	340	122	0.12	141.5	152.28	0.208	1.021	0.0231	0.0121	0.558	1.208	0.0229	0.756	1.195			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel section until flat V weir commissioned in 1994.	Open channel station opened 1965. Problems with severe seasonal weed growth led to closure of original VA station in 1977 (telemetry of levels maintained). Flat-V weir (1:20 cross-slopes) commissioned 1994. Located just downstream of bridge in meandering reach; channel 11m wide.	Open channel station well-rated to bankfull by gauging, and the December 1965 event gauged by current meter at 2.36m and 27.9 m3/s. There appears to have been a datum shift in March 1970 of around +0.30m. Applying a datum shift of +0.31m to data before 11/03/1970 and then applying the pre-weir rating gives similar flows to those shown in most cases (maximum difference of under 2 m3/s). Stage hydrographs of AMAX events in early record look reasonable. Although few gaugings above QMED pre- and post-weir, the highest events in both periods were gauged near the peaks. Most recent rating valid from April-1994 when weir installed. Pre-weir rated up to bankfull (2.35m). Post-weir rating valid to 2m; max gauging 1.55m; upper limb based on 2 gaugings. Post-weir high flows are derived from rating curve fitted to spot flow gaugings - gaugings suggest channel control at high flows is stable. Embankment limits spills onto left bank (see photos near peak of October 1998 event). Weir drowns at high flows. Weed/algae problems.	Low flows: Pre-weir record of limited value due to shifting bed control caused by annual weed growth. (But 1976 7-day minimum may be lower than that for 1995). No daily flows recorded 1977 to 1994. Data prior to 1965 is not held on record as deemed unreliable.	Moderate to high relief catchment in S Pennines. Carboniferous Limestone with basic sills and intrusions in upper catchment. Isolated hill top peat. Buxton in the headwaters, otherwise moorland, grazing, forested main valley.	Modest net augmentation to flows from WRW and PWS.
28024	Wreake at Syston Mill	413.8	SK61511246	461510.0	312460.0	52°42'22.7600"N 1°05'27.8503"W	52.70632	-1.09107	Wreake	Syston Mill	47.7	EA-EM	4024	28	1967-01-01		US	4.8	35.0	15.7	true	true	true	true	false	false	false	false	false	false	false	false	false	GE	1967-08-01	2023-09-30	2.823	0.088	1976-08-27	1976-08-27	77.96	1981-04-27	1981-04-27	0.296	0.609	1.076	6.964	11.96	0.4	20515	20066	97.811	1966-06-01		33.633	47.3	76.1	116.7	156.2	229.3	648	634	0.0303	0.5145	0.3766	0.0	0.0738	0.0267	0.5939	0.3424	0.0014	0.0331	0.056		0.841	0.1031	0.0368		0.6754	0.28	0.403	0.953	40.6	41.93	30.7	40.5	11.1	55.23	28.1	117	240	0.03	47.3	417.01	0.786	0.905	0.0885	0.0151	0.687	0.667	0.0225	0.805	0.742	1985		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauge on the Wreake.	Ultrasonic time of flight gauge since October 2018, providing good quality data at low and high flows. Side-looking ADCP gauge 2012-2018. Electromagnetic gauge in use 1982-2012, replacing the original crump weir 4.6m wide which was originally installed in 1967.	All flows contained. Site difficult to gauge; very low velocities at low flows and station bypassed at high flows. Three peak flow ratings applied across period of record.	Issues with low flow data during ADCP period due to low channel velocities in a deep river section. Levels indicate the March 1975 event may have been higher than the April 1998 event, but the magnitude cannot be verified due to complications with the rating history.	Moderate relief catchment, draining west from the Oolitic Limestone scarp. Predominantly Boulder Clay overlying Liassic clays. Rural catchment, mixed farming, containing Melton Mowbray.	Fast response to rainfall and significant augmentation from WRW.
28025	Sence at Ratcliffe Culey	169.4	SP32089961	432080.0	299610.0	52°35'36.0473"N 1°31'40.3125"W	52.59335	-1.52786	Sence	Ratcliffe Culey	67.3	EA-WM		28	1964-01-01	1984-12-31	C		24.6	20.4	true	false	false	false	false	false	false	false	false	false	false	false	false	GE	1966-09-01	1984-02-29	1.529	0.071	1976-08-26	1976-08-27	34.71	1973-06-28	1973-06-28	0.257	0.429	0.727	3.087	5.302	0.42	6391	6388	99.953				68.5	83.6	109.5	154.8	275.4	677	652	0.0553	0.5013	0.3296		0.1068	0.034	0.5551	0.3196	0.0132	0.0749	0.0627			0.9373	0.1588		0.5665	0.3	0.432	0.983	25.9	40.4	31.5	39.1	10.7	29.21	15.06	116	229	0.18	68.5	177.65	0.886	0.842	0.1298	0.0415	0.678	1.223	0.043	0.831	1.275			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A double gauge crump weir on the River Sence.	Crump weir.	Double gauged with upstream and downstream tapping points. Modular limit dependent upon backwater effects of river Anker.
28026	Anker at Polesworth	368.0	SK26280334	426280.0	303340.0	52°37'37.8756"N 1°36'47.4743"W	52.62719	-1.61319	Anker	Polesworth	60.4	EA-WM	4026	28	1966-01-01		C VA	47.0	38.0	15.1	true	true	true	true	false	false	false	true	false	false	false	false	false	GE	1966-09-07	2023-09-30	3.104	0.188	1971-09-10	1971-09-10	82.0	2012-11-25	2012-11-25	0.755	1.243	1.799	6.358	9.881	0.52	20843	20782	99.707	1966-09-01		46.049	62.1	78.9	102.8	144.3	275.4	680	653	0.0756	0.4673	0.2894		0.1584	0.0422	0.5201	0.2848	0.012	0.1358	0.0636		0.0385	0.8978	0.1705		0.4379	0.3	0.446	0.982	26.8	39.46	31.7	39.5	10.7	40.21	23.99	108	256	0.09	62.1	371.58	0.974	0.918	0.1401	0.0682	0.759	1.076	0.0779	0.87	1.084			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir with flanking floodbanks to contain out-of-channel flows draining a highly responsive catchment.	Crump profile weir with flanking floodbanks to contain out of bank flows - includes a cableway and downstream recorder. The flow bypasses on the left bank and rejoins downstream after the railway bridge.	Multiple ratings accross period of record. Variable drowning makes calculating upper limb difficult. Low modular limit (drowns at approximately 0.6 m [~8.0 m3/s]) and prone to weed growth, causing variable drowning and uncertainty with high flows. ADCP gaugings performed between weir wing walls during summer weed growth. Otherwise the cableway is used.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Lower reaches drain Permian and Triassic Sandstones and the Coal Measures. Sherwood sandstone and Mercia Mudstone over the remainder of the catchment are widely blanketed with Boulder Clay. Predominantly agricultural catchment, although contains Nuneaton and Hinkley; with urban land use accounting a signifcant proportion of the catchment area.	Substantial modification owing to PWS imports to the catchment.
28027	Erewash at Sandiacre	182.2	SK48253643	448250.0	336430.0	52°55'23.2463"N 1°17'01.5764"W	52.92312	-1.28377	Erewash	Sandiacre	33.4	EA-EM	4427	28	1965-01-01		IV	730.0		18.3	true	true	true	true	false	false	false	false	false	false	false	false	false	GEI	1965-10-01	2023-09-30	1.92	0.202	1990-09-02	1990-09-02	44.08	2000-11-06	2000-11-06	0.513	0.82	1.175	3.98	5.829	0.52	21184	16863	79.603	1965-12-01		18.258	34.4	57.6	98.8	148.9	194.0	719	708	0.0725	0.2436	0.3632	0.0013	0.3109	0.0715	0.3645	0.3265	0.0047	0.2281	0.1899	0.0004		0.8097	0.0049		0.1126	0.35	0.409	0.925	52.4	35.39	31.4	39.6	10.6	33.98	16.76	100	161	0.14	34.4	183.7	0.578	0.737	0.0654	0.1087	0.761	0.893	0.1549	0.885	0.947			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Laserflow velocity index gauge installed in 2022 to run in parallel with Ultrasonic gauge during calibration. Previously multi path Ultrasonic time-of-flight gauge, and originally rated section. River splits flows through two rectangular flood drainage channels.	Two rectangular concrete channels, each 3.9m wide, 3.09m deep, separated by divide wall 1m high. All flows contained. Opened in 1965 as rated section. Closed in 1984, reopened in 1991 as multi-path ultrasonic gauge. Laserflow velocity index gauge installed in 2022. Pre 1972 the data is from CEH data holdings. Between 1972 and 1992 the data is the sum of the flows from the left (4027) and right (4227) channels.	Use pre-ultrasonic record with care especially at low flows due to unstable rating. Informal low flow controls installed in 1981 produced some improvement. Stop boards were able to close one channel at low flows.		Low to moderate relief catchment draining Carboniferous Coal Measures with Permian and Triassic rocks on east and south boundaries. Significant urban fraction, otherwise arable and grazing land use.	Substantial augmentation from mine drainage and mining towns' STW. Runoff influenced by groundwater abstraction/recharge. Runoff increased by effluent returns. Runoff reduced by industrial/agricultural abstraction. Substantial mining in catchment.
28028	Soar at Wanlip	480.0	SK603109	460300.0	310900.0	52°41'32.7695"N 1°06'33.3395"W	52.69244	-1.10926	Soar	Wanlip	47.0	EA-EM		28	1970-01-01	1981	CC				true	false	false	false	false	false	false	false	false	false	false	false	false	E	1972-09-01	1981-02-28	2.705	0.163	1975-08-10	1975-08-10	43.62	1975-03-10	1975-03-10	0.296	0.693	1.318	6.158	9.793	0.35	3103	1733	55.849				44.5	68.6	100.1	137.9	221.8	663	636	0.0549	0.3728	0.3278	0.0	0.2325	0.0217	0.4075	0.3439	0.0062	0.2169			0.4366	0.5634	0.1358		0.7478	0.29	0.406	0.988	29.9	40.98	31.8	39.5	11.3	48.71	27.07	103	343	0.08	46.0	478.31	0.958	0.819	0.1172	0.1022	0.833	0.588	0.1307	0.91	0.588			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir on the Soar. Station closed in 1981.	Compound Crump weir, closed in 1981.			Lower catchment dominated by Leicester; headwaters rural.	Responsive regime.
28029	Kingston Brook at Kingston Hall	57.0	SK503277	450300.0	327700.0	52°50'40.0778"N 1°15'16.6630"W	52.84447	-1.25463	Kingston Brook	Kingston Hall	31.0	EA-EM		28	1966-01-01	1984-12-31	CC		7.6	50.0	true	false	false	false	false	false	false	false	false	false	false	false	false	EI	1966-05-03	1984-02-29	0.381	0.003	1976-08-25	1976-08-25	13.66	1977-02-25	1977-02-25	0.032	0.094	0.158	0.792	1.369	0.38	6512	6286	96.529				32.5	46.2	79.7	124.1	154.0	611	596	0.0408	0.469	0.4211		0.0614	0.0392	0.5377	0.3794	0.004	0.0378	0.0306		0.5829	0.3865	0.0511		0.5992	0.28	0.377	0.972	31.2	44.14	31.3	38.2	10.8	25.41	12.35	81	303	0.23	32.5	60.74	0.711	0.769	0.0996	0.0148	0.675	0.656	0.0159	0.78	0.675			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir on the Kingston Brook, gauging the upstream flat agricultural land.	Compound Crump profile weir with crest tapping. Experimental catchment.	Channel flanked by floodbanks. Weed growth problems, severe backing up from the Soar in high flows. Not bypassed but inundates u/s. Theoretical rating appears to underestimate flows.		Flat, agricultural catchment whose solid geology is Triassic Mudstones and Lower Lias. Diamicton overlays the upper reaches of the catchment, whilst the lower valley is overlain by alluvial deposits.	Moderate influence from WRW and spray irrigation.
28030	Black Brook at Onebarrow	8.4	SK466171	446600.0	317100.0	52°44'58.2596"N 1°18'39.8354"W	52.74952	-1.31107	Black Brook	Onebarrow	111.1	EA-EM		28	1967-01-01	1984-12-31	FL		14.0	20.0	true	false	false	false	false	false	false	false	false	false	false	false	false	GE	1967-04-02	1984-02-29	0.078	0.005	1976-06-29	1976-09-08	2.898	1977-02-24	1977-02-24	0.011	0.023	0.041	0.165	0.257	0.42	6178	5943	96.196				115.5	136.5	172.1	224.2	251.7	744	733	0.1502	0.1592	0.6286		0.0597	0.1244	0.2546	0.6018	0.0005	0.0169			0.1727	0.8273			0.2212	0.3	0.354	0.988	73.4	43.07	33.7	42.0	11.5	5.76	3.3	176	9	0.29	115.5	8.14	0.323	0.724	0.0358	0.0006			0.0023					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal Flume on the Black Brook, covering the full range of flows.	Trapezoidal Flume. International Hydrological Decade Experimental Basin.	Well rated, full range station, not bypassed.		Small rural catchment of moderate relief; hills of impermeable Pre-Cambrian rocks, valleys infilled with Keuper Marl and Boulder clay. Responsive. Mostly pasture.	Some contribution from M1 runoff, but otherwise natural.
28031	Manifold at Ilam	148.5	SK13985072	413980.0	350720.0	53°03'12.8035"N 1°47'34.3871"W	53.05356	-1.79289	Manifold	Ilam	131.0	EA-WM	4031	28	1968-01-01		C		100.0	18.1	true	true	false	true	false	false	false	true	false	true	false	false	true	N	1968-04-09	2023-09-30	3.611	0.283	1976-08-26	1976-08-26	91.0	1991-12-21	1991-12-21	0.634	1.398	2.35	7.71	11.4	0.52	20263	20262	99.995	1964-10-01		66.857	133.4	235.8	304.0	394.7	508.1	1087	1098	0.0574	0.0593	0.822	0.0341	0.0169	0.0634	0.0153	0.8503	0.0681	0.0025		1.0				0.0158	0.0665	0.44	0.455	1.0	117.1	33.31	36.3	46.4	10.1	34.07	19.5	308	98	0.18	133.5	148.15	0.423	0.913	0.0326	0.0022			0.0034			1971		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir somewhat insensitive but good quality data throughout the range of flows but difficult to gauge at higher flows.	Crump profile weir, 12.5m wide in a straight reach - modular to bankfull. Rocky bed, somewhat insensitive but good quality data throughout the range. Gaugings possible with ADCP just upstream of weir at levels up to around 0.8m after which it becomes increasingly more difficult due to turbulent flow. Gaugings can also be performed in Ilam village however are not always reliable. Located downstream of Ilam town and 700m upstream of Manifold/Dove confluence. Fish baffles and eel pass installed on weir in July 2015.	One rating applied across period of record. Top section derived from gaugings. High flow gaugings since 2007 informed new rating applied to flows above 0.465m - leading to slight increases in high flows across period of record. Digitised record prior to 01/11/1970 is considered unsuitable for derivation of reliable peak flows.	Water Year 1971/1972 is rejected as the true AMAX occurs during missing period and likely to be substantially higher. Drop in flow August 2022 due to debris being cleared from the weir. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Headwaters of moderate relief and drain sandstone and mudstone of the Millstone Grit; middle reach has cut deep gorges through Carboniferous Limestone. Responsive catchment. Sheep grazing and moorland.	Minimal interference from PWS.
28032	Meden at Church Warsop	63.0	SK55846800	455840.0	368000.0	53°12'22.1223"N 1°09'55.5258"W	53.20615	-1.16542	Meden	Church Warsop	55.8	EA-EM	4032	28	1965-08-01		FV		45.0	7.8	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1965-08-01	2023-09-30	0.589	0.142	1978-11-03	1978-11-03	11.8	2007-06-25	2007-06-25	0.241	0.358	0.461	1.023	1.354	0.77	21245	18841	88.684	1965-03-01		4.899	55.1	73.6	133.1	167.6	205.0	710	699	0.0624	0.4667	0.2363	0.0001	0.2322	0.0752	0.5756	0.1844	0.0048	0.158	0.9452			0.0548			0.0298	0.38	0.821	0.976	41.6	13.6	33.0	40.8	10.9	16.7	8.27	126	83	0.32	55.1	59.91	0.379	0.804	0.0625	0.0909	0.741	1.002	0.0972	0.869	1.038	1983..1989		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard pre 2015. Flat-V from 2015 onwards.	Flat-V weir installed in Jan 2015 to replace the trapezoidal flume built in 1964. 1972-2015 flume was unsatisfactory so site used as velocity area except 1984-1990 when station was inactive. Built to measure flows entering Sherwood Sandstone outcrop.	Theoretical Flat-V equation applies from 2015 onwards with tail water corrections above modular limit of structure. Two ratings applied to pre-2015 period of record. Mining subsidence in 1976 caused permanent drowning of flume until downstream channel was re-graded in 1981.	Station closed between 1984 and 1990. June 2007 and October 2023 high flows beyond limit of rating curve.	Ribbon-like, SW-NE catchment of moderate relief, rising on Magnesian Limestone, subordinate Permian Marl and Sherwood Sandstone. Mining was dominant industry; many spoil tips. Sutton in Ashfield in headwaters, also part of Mansfield Woodhouse.	Significant proportion of low flows are comprised of effluent.
28033	Dove at Hollinsclough	8.0	SK06326683	406320.0	366830.0	53°11'54.6449"N 1°54'24.6666"W	53.19851	-1.90685	Dove	Hollinsclough	280.5	EA-WM	4033	28	1965-01-01		CC		17.0	22.5	true	true	true	true	false	false	false	true	false	false	false	false	false	N	1965-09-01	2023-09-30	0.272	0.004	1986-01-05	1986-01-05	5.05	1965-12-09	1965-12-09	0.045	0.105	0.173	0.603	0.833	0.47	21214	17318	81.635	1965-07-01		4.138	281.1	347.6	406.2	475.0	546.1	1361	1346	0.0035		0.9275	0.052		0.0718		0.8171	0.1102	0.0009		1.0						0.52	0.403	1.0	166.7	42.5	41.6	55.6	10.5	6.11	3.14	408	108	0.22	281.7	7.92	0.086	0.801	0.0075	0.0			0.0			1965..1986		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir built to investigate the water balance of a Millstone Grit catchment typical of the area south of the High Peak.	Small compound Crump profile weir, crest lengths 1.2 and 3.02m in rocky channel. Originally an experimental catchment with associated comprehensive climate station. Station out of action Oct 1986-Oct 1996.	Fully modular, has never been overtopped. Some trouble with left bank accretion, incised gauging section, and heavy undergrowth. One rating applied across period of record, based on rating tables not gaugings. Difficult to gauge higher flows the largest of which suggests rating underestimates flow. Rating revised in 2016.	Zero flow in Jan 1986 thought to be due to frozen catchment. Winter 21-22 has no flow to large debris jam in the flume. Unable to apply correction due to uncertainty in point of accumulation, flows were too high to keep in. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Headwater gauge for the River Dove. Steep slopes and flashy regime. Namurian Grits and Shales with some Dinantian limestone (about 10%). Highland catchment, steep gradients. Mainly rural grazing land. Catchment heavily instrumented for rainfall and evaporation measurements.	Natural to within 10% at the 95 percentile flow with flashy regime.
28035	Leen at Triumph Road Nottingham	111.0	SK54973929	454970.0	339290.0	52°56'53.4711"N 1°11'00.0388"W	52.94819	-1.18334	Leen	Triumph Road Nottingham	24.3	EA-EM	4435	28	1968-01-01		IV			18.1	true	true	true	true	false	false	false	false	false	false	false	false	false	GEI	1967-04-01	2023-09-30	0.694	0.047	1990-08-03	1990-08-03	10.1	2007-06-25	2007-06-25	0.237	0.388	0.521	1.28	1.692	0.68	20637	12237	59.296	1992-09-25		13.365	27.1	49.5	88.2	127.4	185.9	693	687	0.0995	0.2396	0.1582	0.0176	0.4784	0.1182	0.3152	0.1522	0.0072	0.4035	0.7389			0.2611	0.0287		0.0647	0.35	0.762	0.957	43.4	19.6	31.9	40.7	10.8	20.23	10.95	88	134	0.28	27.1	118.32	0.421	0.813	0.0684	0.2106	0.843	0.667	0.277	0.933	0.662			gdf;gmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station in central Nottingham gauging the baseflow dominated regime of the Leen. Twin concrete channels in urban area.	Two rectangular concrete channels, each 3.05m wide, 2.75m deep, separated by divide wall 1m high. All flows contained. Closed 1984, reopened in 1991 as multiple Ultrasonic operation. Laser flow gauge operational from 2023. Station added to peak flows dataset in August 2024 (WINFAP Files v13).	Use pre-ultrasonic record with care especially at low flows due to unstable rating. Informal low flow controls installed in 1981 produced some improvement.	Peak Flows available from the Ultrasonic gauge only after WY1991/1992.	Moderate to low relief catchment draining south into Nottingham. Geology predominantly Magnesian Limestone in the west with Permian Mudstones and Sherwood Sandstones to the east. Significant urban fraction, approx 50%, in lower catchment otherwise arable and grazing land use.	An extremely urban, flashy catchment producing a very spiky data record. Minor net disturbance to baseflow dominated flow regime. There is also a high level of flood attenuation in the catchment, with a number of dams and storage reservoirs that can hold back flow and level.
28036	Poulter at Twyford Bridge	128.2	SK69997525	469990.0	375250.0	53°16'10.6741"N 0°57'07.2563"W	53.26963	-0.95202	Poulter	Twyford Bridge	16.9	EA-EM	4036	28	1969-01-01		IV		17.0	13.25	true	false	false	false	false	false	false	true	false	false	false	false	false	SRGE	1969-08-01	2023-09-30	0.59	0.04	1971-07-23	1971-07-23	4.271	2019-11-08	2019-11-08	0.231	0.402	0.503	0.967	1.26	0.84	19784	13239	66.918				18.4	40.9	73.0	149.7	186.8	660	647	0.262	0.4657	0.1435	0.0292	0.0864	0.2638	0.5469	0.1183	0.0178	0.0441	0.8748			0.1252	0.0121		0.0102	0.29	0.876	0.859	32.8	13.17	32.9	41.9	11.4	35.61	19.26	85	90	0.31	18.4	124.78	0.382	0.95	0.0695	0.0432	0.687	1.257	0.0327	0.789	1.309			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	LaserFlow gauge gauge on the Poulter. Large amounts of missing data.	Station sites where Poulter leaves Sherwood Sandstone outcrop. Original 4.88m wide Crump profile weir submerged from late 1972 by mining subsidence; channel regraded in 1981, but no solution. Ultrasonic gauge installed in 1992 revived the station and was replaced by a LaserFlow gauge in October 2017.	Laserflow capable of measuring full range of flows.	Periods of missing data from 2007 until 2009 due to difficulties with ultrasonic gauge. Early flow record for the ultrasonic gauge did not measure bypass flow. Further periods of suspect data and edited data from 2015-2019 due to measurement problems. The laser flow gauge post 2019 measures the full range of flows to a better standard.	Catchment rises on Magnesian Limestone with subordinant Permian Marl; mainly underlain by Sherwood Sandstone. Predominantly rural; part of Bolsover and Shirebrook in headwaters.	Minor augmentation from sewage; inline lakes in Clumber and Welbeck Parks ensure sluggish response.
28037	Derwent at Mytham Bridge	203.0	SK21158212	421150.0	382120.0	53°20'08.0473"N 1°41'01.8624"W	53.33557	-1.68385	Derwent	Mytham Bridge	139.0	EA-EM		28	1968-01-01	1996-02	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	SRPE	1978-02-01	1996-02-29	4.989	0.728	1992-07-29	1992-07-29	220.0	1978-12-28	1978-12-28	0.994	1.459	2.049	11.36	18.64	0.44	6603	3591	54.384				138.6	215.8	386.4	524.5	635.5	1327	1318	0.104	0.0133	0.5183	0.3167	0.0119	0.105	0.0091	0.3592	0.5019	0.008		1.0			0.0227	0.3157	0.0351	0.48	0.408	0.861	185.0	43.01	40.9	58.7	10.1	24.21	13.51	380	127	0.17	138.6	206.87	0.246	0.69	0.0182	0.0014			0.0025					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station on the Derwent, downstream of the Ladybower Reservoir.	Downstream of Ladybower Reservoir.		Data covers 1978-1984 and 1992-1996.	Steep moorland headwaters, with extensive hilltop peat. Shale and sandstone form the lower parts of the valleys, gritstone tops the hills (Middle Carboniferous).	Artificial flow regime, substantial reduction in runoff due to PWS exports.
28038	Manifold at Hulme End	46.0	SK106595	410600.0	359500.0	53°07'57.2046"N 1°50'34.8877"W	53.13256	-1.84302	Manifold	Hulme End	213.3	EA-WM	4038	28	1969-01-01	1982-12-31	VA		34.0	36.7	true	false	false	false	false	false	false	false	false	false	false	false	false	PE	1969-01-01	1982-09-30	1.141	0.007	1976-07-29	1976-07-29	23.44	1977-02-10	1977-02-10	0.09	0.268	0.523	2.568	4.464	0.31	5021	4918	97.949				214.1	249.3	321.5	426.1	508.1	1196	1172	0.0372	0.0638	0.8072	0.0781	0.0109	0.0526	0.007	0.7973	0.1405	0.0026		1.0				0.0523	0.085	0.51	0.426	1.0	99.3	37.71	38.7	50.7	10.2	16.56	8.55	329	93	0.25	214.1	44.67	0.518	0.684	0.0437	0.0016			0.0016					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station closed in 1982.	Concrete weir with iron girder across crest (metal crest added 1968). Crest level 213.281mAOD, 8.5m wide. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Rating applied across period of record, not believed to be based on theoretical weir equations. No gaugings above 0.7m. Rating not validated above level of highest spot gauging (0.7m / ~11 cumecs).		Underlain entirely by Namurian shales and grits. Land use upland pasture with sheep grazing and moorland.	Responsive catchment. Runoff reduced by public water supply abstraction. Runoff increased by effluent returns.
28039	Rea at Calthorpe Park	74.0	SP07078471	407070.0	284710.0	52°27'37.0542"N 1°53'50.5498"W	52.46029	-1.89737	Rea	Calthorpe Park	104.2	EA-WM	4039	28	1967-01-01		C B	128.0	4.0	11.5	true	true	true	true	false	false	false	true	false	true	false	false	true	E	1967-04-14	2023-09-30	0.74	0.101	2022-08-14	2022-08-14	35.25	2007-07-20	2007-07-20	0.178	0.309	0.426	1.498	2.28	0.44	20624	20565	99.714	1965-07-01		31.924	106.8	133.7	165.7	205.8	290.8	792	781	0.0596	0.0395	0.1795		0.6972	0.0464	0.0538	0.1645		0.7251	0.3133			0.6867	0.0629		0.4376	0.3	0.511	0.948	44.4	34.91	34.5	44.0	11.1	16.83	8.09	168	77	0.23	106.8	73.68	0.553	0.825	0.066	0.3308	0.831	0.958	0.4537	0.927	0.955	1966		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir draining an almost totally urbanised catchment with data used for flood forecasting.	Crump profile weir, 3.66m wide, with flanking broad-crested weirs set in a formalised, roughly rectangular channel. Station data is used for flood forecasting.	High flows gauged from nearby footbridge, but hazardous owing to high velocities. Prone to upstream siltation. Drowns at high flows. At 0.7m the flows go over the broad-crested weir shoulders, but all flows are in bank. Possibly some backing up effects but of uncertain cause. Multiple peak flow ratings across period of record, derived from current meter gaugings.	Summer 2007 peak flows under review. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Almost totally urbanised catchment overlying clay except in the headwaters in the Lickey Hills.	Very responsive. Significant imports modify flow regime. Runoff increased by effluent returns.
28040	Trent at Stoke-On-Trent	53.2	SJ89174667	389170.0	346670.0	53°01'01.9867"N 2°09'46.3861"W	53.01722	-2.16289	Trent	Stoke-On-Trent	113.2	EA-WM	4040	28	1968-01-01		C		45.0	18.3	true	true	true	true	false	false	false	true	false	false	false	false	false	SGE	1968-05-01	2023-09-30	0.628	0.067	2010-07-11	2010-07-11	29.7	1987-08-23	1987-08-23	0.116	0.23	0.354	1.35	2.07	0.44	20241	20241	100.0	1968-03-01		11.527	112.9	138.7	182.3	240.5	331.3	878	861	0.0507	0.0554	0.584	0.006	0.2997	0.0372	0.0602	0.5968	0.0199	0.2807	0.0057	0.1366		0.8576	0.0131		0.7506	0.44	0.403	0.969	68.3	33.94	32.3	41.6	9.9	15.68	8.0	185	228	0.19	112.9	58.52	0.5	0.844	0.0561	0.1467	0.785	0.818	0.1578	0.847	0.801			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir draining and urbanised and industrialised catchment with significant flow modification.	Crump profile weir, 4.12m wide, modular throughout range. Liable to collect rubbish and fish baffles added in 2012.	Four peak flow ratings applied across period of record. Current meter gaugings show a high degree of accuracy compared to rating. Low flow ADCP gaugings typically carried out between weir wing walls. High flow gaugings performed off or near upstream footbridge.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Moderate relief catchment, significantly urbanised at Biddulph and Stoke on Trent, draining the Coal Measures; approximately quarter of catchment is covered with Boulder Clay.	A responsive catchment affected by impounding reservoirs, discharges from three WRW's, plus mine drainage. Substantial flow modification in the early record, but reduced to significant through the 1980s. Flow affected by STW closure: effluent from Stoke diverted to other STW downstream of the gauge.
28041	Hamps at Waterhouses	35.13	SK08295016	408290.0	350160.0	53°02'55.1038"N 1°52'40.0352"W	53.04864	-1.87779	Hamps	Waterhouses	210.2	EA-WM	4041	28	1968-01-01		FV		37.0	23.3	true	true	true	true	false	false	false	true	false	false	false	false	false	EN	1968-04-01	2023-09-30	0.728	0.007	1976-08-26	1976-08-26	18.71	2000-11-05	2000-11-05	0.068	0.183	0.374	1.735	2.603	0.36	20271	13693	67.55	1968-03-01		26.313	212.1	256.6	325.4	407.9	474.0	1065	1085	0.0221	0.0722	0.8594	0.0158	0.0209	0.0297	0.0176	0.9129	0.0358	0.0031		1.0					0.073	0.44	0.302	1.0	86.2	47.08	35.4	44.5	10.1	16.63	8.54	327	110	0.22	212.1	37.04	0.393	0.664	0.0328	0.0033			0.0045	0.377	0.204	1967		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir with poor, rocky, approach.	Flat vee weir. Poor approach to weir - rocks and shoal. Station closed 1982-2000.	Mostly contained within bank except for Aug-71 maximum. Two peaks flow ratings applied across period of record.	Station closed 1982-2000. High flows in August 1971 missing from GDF record. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).		Runoff increased by effluent returns. Natural to within 10% at the 95 percentile flow.
28043	Derwent at Chatsworth	335.0	SK26066836	426060.0	368360.0	53°12'42.0063"N 1°36'40.4689"W	53.21167	-1.61124	Derwent	Chatsworth	99.0	EA-EM	4043	28	1968-01-01		VA	208.0		12.9	true	true	true	true	false	true	false	false	true	false	false	true	false	SRP	1968-11-01	2023-09-30	6.44	0.601	1984-08-19	1984-08-19	157.1	2022-02-20	2022-02-20	1.48	2.52	3.69	14.1	20.45	0.55	20057	20057	100.0	1968-01-01		88.166	101.0	177.6	327.3	500.2	635.5	1180	1170	0.1129	0.0315	0.5523	0.2478	0.0265	0.1201	0.015	0.4254	0.4178	0.01		0.9234		0.0766	0.0208	0.2144	0.0355	0.41	0.461	0.909	158.7	37.49	38.5	54.0	9.9	42.68	24.07	335	139	0.12	100.9	344.37	0.341	0.73	0.0258	0.0023			0.0061	0.655	0.554			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station approx. 36m wide at bankfull.	Velocity area station approx. 36m wide at bankfull. Important flood forecasting station.	Downstream shoal acts as a control, but shoal and rating are not too stable. All but extreme flows contained. Four peak flow ratings applied over period of record. Spot gauged during highest recorded flood (6/11/2000).	Analomous flows in Aug/Sept 1975. The pre-1976 data is thought to be less reliable due to inconsistencies over the way the datum change has been handled.	Upland catchment with peat covered moorlands in the headwaters. Geology: predominantly Millstone Grit, with some western tributaries draining Carboniferous Limestone. Predominantly pasture.	Quite responsive. Flows substantially affected by Derwent reservoirs.
28044	Poulter at Cuckney	32.2	SK57137140	457130.0	371400.0	53°14'11.6410"N 1°08'43.8162"W	53.23657	-1.1455	Poulter	Cuckney	47.0	EA-EM	4044	28	1969-01-01		IV		228.0	19.4	true	false	false	false	false	false	false	true	false	false	false	false	false	GE	1969-08-01	2023-09-30	0.317	0.083	1976-07-29	1976-07-29	1.84	2012-11-25	2012-11-25	0.166	0.234	0.274	0.507	0.608	0.92	19784	17706	89.497				45.5	62.6	102.1	165.7	186.8	684	668	0.1435	0.6186	0.1556		0.08	0.1574	0.705	0.0964	0.0052	0.0343	0.9088			0.0912				0.38	0.914	0.91	36.2	10.07	33.6	42.0	11.2	12.46	6.83	111	84	0.42	47.6	33.96	0.292	0.87	0.059	0.056	0.658	1.024	0.0372	0.75	1.01			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir on the Poulter, with a high baseflow component. Bed mounted Doppler with IV rating from 21/11/2016 due to weir drowning at all flows.	Crump profile weir 3.71m broad, modular to bankfull. Designed to measure the flow as the Poulter entered the Bunter Sandstone outcrop.		Flows ungauged for period 1984 to 1990 due to mothballing of station.	Catchment of moderate relief draining from the scarp of the Magnesian Limestone eastwards. Subordinate outcrops of Permian Marl. Some urban development and coal mining spoil heaps.	High baseflow component, subdued hydrographs. U/s water gardens further damp response. U/s farm abstraction. Minimal modifications to flow regime from WRW.
28045	Meden/Maun at Bothamsall / Haughton	262.6	SK681732	468100.0	373200.0	53°15'05.2316"N 0°58'50.8358"W	53.25145	-0.98079	Meden/Maun	Bothamsall / Haughton	24.3	EA-EM	4045	28	1965-01-01	1984-12-31	FLVA		10.0		true	true	false	true	false	false	false	false	false	false	false	false	false	GE	1965-10-01	1984-03-31	1.688	0.262	1976-08-19	1976-08-19	17.55	1977-02-25	1977-02-25	0.783	1.176	1.405	2.688	3.431	0.77	6757	6726	99.541	1958-01-01	1984-04-03	8.94	26.8	54.3	92.3	157.2	205.0	682	678	0.1742	0.4048	0.1592	0.028	0.2253	0.1929	0.4903	0.1218	0.0211	0.1696	0.9197			0.0803	0.0045		0.0527	0.28	0.831	0.934	37.7	16.48	32.4	41.4	11.2	32.59	19.45	100	71	0.24	27.0	258.81	0.409	0.878	0.0663	0.0917	0.783	1.171	0.1056	0.895	1.207			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Site data is a combination of DMFs from Bothamsall (4045) on the Meden and Haughton (4034) on the Maun - both trapezoidal flumes, rated by C/m - the river divides upstream of the two gauging points and then joins again downstream. Station closed in 1984.	The Meden and Maun join then split u/s of the gauging points. This is a combination record of DMFs from the Meden at Bothamshall and the Maun at Haughton. No combined peak flows available (those provided are for the Meden). Both stations originally velocity-area stations with trapezoidal flumes built in 1963/4 - closed in 1984.	Flows derived from addition of two subsidiary sites - no ratings. Poor ratings record.	The levels given are at Bothamsall (the site with greater flows).	The lower two thirds of the catchment is Permian and Triassic Sandstones with Permain Magensian Limestone upstream. The catchment includes Mansfield and adjacent former coal mining area. It is almost entirely free of Drift deposits.	Runoff influenced by groundwater abstraction/recharge. Runoff increased by effluent returns.
28046	Dove at Izaak Walton	83.0	SK14715100	414710.0	351000.0	53°03'21.7945"N 1°46'55.1350"W	53.05605	-1.78198	Dove	Izaak Walton	131.4	EA-WM	4046	28	1969-01-01		FV		47.0	9.4	true	true	false	true	false	false	true	true	true	true	true	false	true	N	1969-07-01	2023-09-30	1.962	0.274	1996-10-16	1996-10-16	26.32	1991-12-21	1991-12-21	0.519	1.042	1.589	3.698	4.638	0.77	19815	19815	100.0	1969-06-01		13.187	138.7	240.0	315.7	396.1	546.1	1151	1098	0.0432	0.0418	0.8753	0.0089	0.0128	0.0437	0.0146	0.9122	0.025	0.0045		1.0				0.0001	0.0185	0.46	0.651	1.0	141.2	15.67	36.3	47.4	10.2	31.88	16.41	317	185	0.09	138.7	85.69	0.286	0.944	0.0265	0.0012			0.0037			1968..1969		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir modular to bankfull draining catchment with natural flow regime.	Crump profile flat vee weir, 7.59m wide, deep vertical sidewalls, modular to bankfull. Excellent station, narrower than the main channel.	Fish baffles installed on weir in August 2016. Bypassing may occur at high flows on the left bank. Two peak flow ratings applied across period of record. Gaugings generally performed with ADCP within or just upstream of the weir wing walls across the stage range.	Water Year 1969/1970 rejected due to low confidence. Debris in summer 2022 leading to unusual peak in August. Unable to correct. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Long narrow catchment. Upper reaches on Millstone Grit mudstone and sandstone. Western watershed is formed by a steep Carboniferous Limestone ridge. The Dove's passage across the Carb. l'st is characterised by deep gorges (Wolfscote Dale, Dove Dale). Largely moorland.	Flashy response but natural catchment.
28047	Oldcotes Dyke at Blyth	85.2	SK61478755	461470.0	387550.0	53°22'52.4350"N 1°04'38.5166"W	53.38123	-1.07737	Oldcotes Dyke	Blyth	10.7	EA-EM	4047	28	1970-01-01		FV			13.0	true	false	false	false	false	false	false	false	false	false	false	false	false	E	1970-09-01	2023-09-30	0.718	0.078	1976-08-25	1976-08-25	54.6	2007-06-25	2007-06-25	0.257	0.395	0.508	1.196	1.637	0.69	19388	19388	100.0				12.5	23.2	69.4	121.9	152.2	614	654	0.104	0.6097	0.1245		0.1542	0.0774	0.6914	0.0991	0.0053	0.1248	0.541			0.459			0.0375	0.35	0.714	0.956	34.8	19.26	31.8	42.5	11.4	18.78	9.32	74	87	0.36	12.6	86.49	0.497	0.746	0.0814	0.0712	0.721	1.214	0.0755	0.86	1.284			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir station draining baseflow dominated catchment with substantial augmentation of low flows from WRW.	Crump profile Flat V weir with reasonable approach d/s of a road bridge. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Low modular limit (~0.75m, 7-8 cumecs), rating does not take account of non-modular flow conditions. Three ratings applied across period of record. Ratings have generic upper limb and slightly different limbs for low flows. Wading gaugings taken u/s of bridge should site back-up (owing to weed growth).	June 2007 high flows unreliable as level beyond limit of measuring structure. Flows from October 1999 reprocessed in 2012 to account for negative shift in gaugings of unknown cause - resulting in lowering of low flow estimates. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Moderate relief catchment, sited where the river crosses the Triassic Sandstone outcrop, mostly draining Magnesian Limestone but includes Coal Measures, Permian Marl & sandstones. Rural catchment arable farming as dominant land use.	Base flow dominated with substantial augmentation of low flows from WRW.
28048	Amber at Wingfield Park	139.0	SK37545200	437540.0	352000.0	53°03'50.1545"N 1°26'28.5384"W	53.06393	-1.44126	Amber	Wingfield Park	71.2	EA-EM	4048	28	1970-01-01		FVVA	21.0	1.2	22.0	true	true	false	true	false	false	false	false	false	false	false	false	false	SRPG	1971-01-13	2023-09-30	1.433	0.185	1976-08-09	1976-08-26	46.7	2007-06-25	2007-06-25	0.357	0.548	0.776	2.903	4.55	0.49	19254	19254	100.0	1970-08-01		31.7	72.9	101.6	139.1	263.1	341.5	783	800	0.0513	0.2437	0.5214		0.1757	0.0552	0.3286	0.4905	0.0083	0.11	0.0104	0.1971		0.7925			0.1019	0.36	0.464	0.945	68.1	29.55	34.0	42.7	10.7	24.12	12.16	158	135	0.16	72.9	128.63	0.489	0.764	0.056	0.0415	0.712	0.915	0.0732	0.857	0.898			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir draining catchment containing coal measures and moorland and PWS reservoir.	Crump profile Flat V weir in trapezoidal channel. Higher flows gauged from bridge upstream. Extreme flows bypass on right bank. Fairly low modular limit. Stream joins downstream, which causes drowning of gauging station weir. Pumped Eel pass installed 2015.	Two ratings applied across period of record which are identical above 0.5m. The top section of the curve (out of bank) is derived using channel cross sections. Higher flows gauged from bridge upstream. Extreme flows bypass on right bank.	June 2007 peak flows estimated using flood curve. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Upland catchment with moorland headwaters. Upper half of catchment drains Millstone Grit, partially blanketed with Boulder Clay. Bisects limestone and tuff inlier of Ashover. Lower half predominantly Coal Measures. Landuse predominantly moorland in the headwaters.	Contains Ogston PWS reservoir; substantial augmentation from mine pumping and sewage.
28049	Ryton at Worksop	77.0	SK57527949	457520.0	379490.0	53°18'33.2485"N 1°08'17.5248"W	53.30924	-1.1382	Ryton	Worksop	32.1	EA-EM	4049	28	1970-01-01		FV	30.0	0.8		true	true	true	true	false	false	false	true	false	false	false	false	false	GE	1970-06-18	2023-09-30	0.466	0.037	1976-08-22	1996-08-18	14.66	2019-11-07	2019-11-07	0.093	0.196	0.287	0.953	1.39	0.63	19463	19373	99.538	1968-11-01		5.668	33.3	52.6	102.4	130.2	156.0	648	664	0.1267	0.5606	0.1465	0.0004	0.1544	0.0864	0.6623	0.1263	0.0029	0.1166	0.5297			0.4703			0.0271	0.38	0.748	0.942	34.2	15.71	32.4	42.0	11.3	19.66	10.57	97	89	0.24	33.4	75.38	0.542	0.979	0.0904	0.0647	0.771	0.966	0.066	0.835	1.001	1969		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir draining mixed farming, industry and forestry catchment.	Crump profile Flat V weir, 4.57m at V-full, in trapezoidal channel. Downstream bridge provokes early non-modularity. Modified stage discharge curve produced for non-modularity at high flows.	Two ratings applied across period of record, the reason for change unknown. Ratings fit well to gaugings which are quite scattered, however all flows are contained. Downstream bridge provokes early non-modularity. Modified stage discharge curve produced for non-modularity at high flows.	June 2007 flows should be treated with caution as levels exceeded bankfull. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Catchment of moderate relief on dip slope of Magnesian L'st outcrop with a narrow band of Permian Marl near the gauge. Extractive industries in the west otherwise mixed farming and forestry.	Significant flow augmentation via groundwater pumping and WRW, and abstractions for canal use. High baseflow component and subdued hydrographs.
28050	Torne at Auckley	135.53	SE64580122	464580.0	401220.0	53°30'13.3800"N 1°01'40.1494"W	53.50372	-1.02782	Torne	Auckley	1.6	EA-EM	4050	28	1970-01-01		XC	76.0	2.8	12.5	true	false	false	false	false	false	false	false	false	false	true	false	false	GE	1971-06-01	2023-09-30	0.898	0.115	2019-09-09	2019-09-09	13.88	2019-11-09	2019-11-09	0.33	0.522	0.665	1.58	2.25	0.7	19115	19023	99.519				2.2	7.4	23.0	88.9	144.9	600	617	0.1191	0.4689	0.1744	0.0042	0.2188	0.0932	0.563	0.1306	0.0309	0.1766	0.9067			0.0933	0.1269	0.0921	0.1948	0.29	0.775	0.966	21.4	17.55	31.7	40.6	11.3	28.12	13.27	37	72	0.29	2.2	130.2	0.884	0.777	0.1899	0.0887	0.746	0.91	0.1029	0.882	0.905			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Cross Correlation Doppler flow gauge on the River Torne.	Crump profile Flat V weir in trapezoidal channel, 8.9m wide at V-full. Side-looking doppler installed 50m downstream to allow for reliable low and high flow data from 2016 onwards. New Cross Correlation Doppler installed 6th May 2021.	Cross correlation gauge has provided good quality data since 2021. A number of measurement issues prior to this. Subsidence affected performance in 1990s, second well installed d/s. Bypassing unlikely but high range unreliable prior to 2021 due to backing up from artificial drainage and/or summer weed growth. Low local hydraulic gradients: tail water level measurements allowed correction for drowned flow. Submerged weir rating derived based on gaugings taken when the submergence ratio was zero.	1973 peak under review - triggered by 70mm storm but flow may be over-estimated. Significant weed growth has an impact on flow record.	R. Torne rises on dip slope of Magnesian L'st and Sherwood S'st but soon enters Trent/Humber ancient floodplain. Tidally drained. Contains mine workings and agriculture.	Generally, sluggish response. Substantial flow augmentation from WRW and mine drainage.
28052	Sow at Great Bridgeford	163.0	SJ88352698	388350.0	326980.0	52°50'24.7315"N 2°10'27.8194"W	52.8402	-2.17439	Sow	Great Bridgeford	77.1	EA-WM	4052	28	1971-01-01		FVVA	10.0	2.2	11.6	true	false	false	false	false	false	false	true	false	false	false	false	false	GE	1971-01-18	2023-09-30	1.199	0.169	2011-09-16	2011-10-05	18.4	2019-10-26	2019-10-26	0.337	0.58	0.82	2.34	3.39	0.65	19249	19074	99.091				78.7	94.3	119.8	162.7	234.6	790	751	0.0822	0.361	0.5036	0.0005	0.0503	0.0819	0.3039	0.5754	0.0083	0.0236	0.3286	0.0001		0.6713	0.0548		0.1657	0.38	0.593	0.953	45.2	31.14	30.3	38.1	10.1	25.87	13.56	125	178	0.14	78.7	141.77	0.629	0.84	0.0817	0.0085	0.537	0.75	0.0111	0.676	0.802			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir in trapezoidal channel, with floodbanks to contain out of channel flows.	Crump profile Flat V weir, 9.1m wide, in trapezoidal channel, with floodbanks to contain out of channel flows and cableway to gauge highest flows. Fish and eel pass constructed in 2014. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Downstream channel widened in 2015 to allow for modular conditions throughout the year. Large amount of scatter in gaugings making flow calculations unreliable, compounded by bypass flow during flood conditions which is difficult to measure accuractly. Rating problems include summer weed growth that causes variable drowning, affecting flow quality at all levels. Sedimentation in the measurement section can also cause inaccuracies. ADCP gaugings carried out by wading and remote craft at low flows within measurement section. At high flows, cableway and remote ADCP gaugings can be carried out in the section, though can be difficult due to low velocities.	Flows rejected during Jun to Sep 2016 due to weed growth. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Low relief agricultural catchment, primarily on Mercia Mudstone, with some Sherwood Sandstone in headwaters. Glacial gravel in valleys maintain baseflows.	Minimal interference from sewage effluent and groundwater pumping for PWS.
28053	Penk at Penkridge	272.0	SJ9219114433	392191.0	314433.0	52°43'38.9368"N 2°07'01.4469"W	52.72748	-2.11707	Penk	Penkridge	76.3	EA-WM	4053	28	1971-01-01		FVVA	110.0		10.6	true	true	true	true	false	false	false	true	false	false	false	false	false	EI	1976-05-01	2023-09-30	2.312	0.193	1976-08-25	1976-08-25	60.1	2007-06-25	2007-06-25	0.567	0.992	1.44	4.441	6.96	0.56	17319	14755	85.195	1971-08-01		28.138	78.7	94.0	114.5	150.7	233.8	708	698	0.0537	0.3059	0.3971	0.0002	0.223	0.0515	0.4481	0.3292	0.0061	0.1569	0.3118			0.6882	0.1275		0.3557	0.32	0.464	0.952	24.5	36.89	30.4	37.8	10.6	29.32	15.49	119	15	0.04	78.7	268.6	0.889	0.948	0.1281	0.0688	0.775	1.269	0.1054	0.877	1.241	1970		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Originally a velocity area station the station was closed in 1983 and operated at level only until 1990 when a crump profile Flat V weir in trapezoidal channel was installed.	ADCP gaugings perfomed between weir wing walls or approximately 15m upstream of weir. High level/flood gaugings carried out off upstream road bridge. Periodic weed cutting carried out by contractors during growing season to prevent weir from drowning out prematurely.	Multiple peak flow ratings applied across period of record. Current rating fits corresponding gaugings very well to maximum gaugings (2.3m). Local bankfull conditions - channel width is 15m. Early drowning caused by weed growth.	Station closed in 1983 with level only data until 1990 when data recommences after installation of crump profile weir. Missing data from 2017-05-14 to 2017-09-24 because the site was affected by downstream weed, so the weir was drowned (non-modular) during the summer months. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7). Rating reviewed in 2022 and data reprocessed from 2015.	Low to moderate relief catchment, glacial gravels over Mercia Mudstone to the west with Boulder Clay over Sherwood S'st to the east. Western part of the catchment rural; part of Wolverhampton in the south and Cannock in the East. Elsewhere, mixed farming with some forestry.	Substantial augmentation of flows from WRW.
28055	Ecclesbourne at Duffield	50.4	SK31944464	431940.0	344640.0	52°59'53.2933"N 1°31'31.9781"W	52.99814	-1.52555	Ecclesbourne	Duffield	69.4	EA-EM	4055	28	1971-01-01		FV	32.0	0.7	15.8	true	true	false	true	false	false	false	true	false	false	false	false	false	PE	1971-11-01	2023-09-30	0.638	0.034	1976-08-26	1976-08-26	15.9	2007-06-25	2007-06-25	0.098	0.196	0.337	1.478	2.164	0.49	18962	16091	84.859	1970-08-01		14.389	69.4	102.0	159.2	247.6	355.5	842	852	0.0692	0.208	0.6631		0.0573	0.0856	0.1717	0.7053	0.0112	0.0255	0.0126	0.9874					0.143	0.35	0.455	0.997	106.9	30.41	34.2	42.6	11.0	16.22	7.87	167	137	0.18	69.4	51.06	0.274	0.631	0.0264	0.0129	0.528	1.22	0.0225	0.716	1.292	1970..1989		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V (1:10) weir set in sloping sidewalls - station closed 1983-1989.	Crump profile Flat V (1:10) weir set in sloping (1:1) 1.25m high sidewalls, 7.2m wide at V-full. Likely to be modular to structure full. Closed 1983-89. High flows gauged from d/s bridge - bridge downstream may restrict flood flows. Adjustable pre-barrage to improve fish passage installed on weir apron in Jan 2013. Remains modular to structure full. Pre-barrage to improve fish passage installed on weir apron in 2013. Remains modular to structure full.	Two ratings applied across period of record. Rating should not be applied beyond bankfull. Gauged at low flows only. High flows gauged from d/s bridge. Adjustable pre-barrage to improve fish passage installed on weir apron in Jan 2013. Bridge downstream may restrict flood flows.	Good high flows site - station closed 1983-89. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Moderate relief catchment, solid geology Coal Measures. Minor Boulder Clay cover in mid-catchment. Essentially rural; Wirksworth in headwaters.	PWS abstraction and WRW discharge balance to yield substantially natural regime.
28056	Rothley Brook at Rothley	94.0	SK58061213	458060.0	312130.0	52°42'13.4506"N 1°08'31.8566"W	52.70374	-1.14218	Rothley Brook	Rothley	47.4	EA-EM	4056	28	1973-01-01		FVVA	23.0	2.5	17.7	true	true	true	true	false	false	false	false	false	false	false	false	false	SE	1973-05-10	2023-09-30	0.74	0.047	1995-08-21	1995-08-22	15.5	2007-07-21	2007-07-21	0.119	0.242	0.392	1.6	2.48	0.45	18406	18406	100.0	1970-06-01		12.025	48.4	73.1	109.5	163.3	232.1	688	672	0.0673	0.3461	0.3736		0.1981	0.0749	0.4341	0.3121	0.0147	0.1576			0.0	1.0	0.0229		0.5168	0.3	0.353	0.962	38.4	43.22	31.0	39.4	11.0	27.94	15.25	114	119	0.16	48.4	91.89	0.621	0.86	0.0774	0.0618	0.754	0.791	0.0767	0.86	0.748			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir in a trapezoidal channel.		Some flow uncertainty possibly caused by substantial sediment deposition in upstream section, upstream bend, and more recently deteriorating condition of weir surface. Three ratings applied across period of record, with most recent fit to a shift in lower flow gaugings from 2016. Modular section of the rating is theoretical prior to 2016. 1997 rating change updated the non-modular section. Weir drowns at high flows above 1.1m, starting at 0.5m. Rating limit is level of highest gauging and bankfull level 1.7m. Bypassing on right bank starts above this for which the rating is extrapolated and does not account for. Very high flow backs up from twin arch stone bridge immediately downstream with wrack marks indicating substantial drawdown at the bridge.	Unusual flow pattern in Oct 1978 due to drawdown of Thornton Reservoir. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Geology predominantly Mercia Mudstone overlain by Boulder Clay with ancient Charnwood Forest rocks outcrop to the N. Predominantly rural, but drains a portion of NW Leicester and contains number of small towns.	Substantial imports enter the river from WRW.
28058	Henmore Brook at Ashbourne	42.0	SK17534622	417530.0	346220.0	53°00'46.8074"N 1°44'24.6008"W	53.013	-1.74017	Henmore Brook	Ashbourne	116.4	EA-WM	4058	28	1974-01-01		FV			13.3	true	true	true	true	false	false	false	true	false	false	false	false	false	SP	1974-01-22	2023-09-30	0.427	0.018	1976-08-23	1976-08-26	8.8	1981-12-30	1981-12-30	0.08	0.145	0.24	0.919	1.35	0.5	18149	15618	86.054	1974-01-01		10.6	115.4	150.4	203.9	275.4	367.4	872	895	0.0432	0.1181	0.7108		0.0517	0.0594	0.0527	0.7727	0.0054	0.0332		1.0					0.2589	0.36	0.448	0.977	92.9	31.03	34.9	42.6	11.2	16.74	9.19	208	185	0.21	115.4	38.52	0.316	0.593	0.0304	0.0096	0.505	0.189	0.021	0.71	0.43	1986..2022	1992-10-01..2023-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir within vertical wing walls - station closed between 1984 and 1993.	Crump profile Flat V weir, 6.0m wide, within vertical wing walls. Right bank approach built up into low floodbank. Modular limit high, but no arrangements to deal with non-modular discharge. Contains Carsington pump storage reservoir - impounded from September 1991. Station closed between 1984 and 1993. Peak flows data is for record before Carsington Reservoir.	Single rating applied across the period of record. This accounts for non-modular flow due to the high modular limit of the station. Station closed between 1984 and 1993.	Impounded from September 1991. Rating reviewed in 2022 and data reprocessed from full period of record. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Catchment of moderate relief in South Pennines, draining Drift free Millstone Grit and Carboniferous Limestone. Predominantly forest and pasture, some moorland.	Responsive catchment affected by Carsington pump storage reservoir.
28059	Maun at Mansfield STW	28.8	SK548623	454800.0	362300.0	53°09'18.0779"N 1°10'55.0846"W	53.15502	-1.18197	Maun	Mansfield STW	78.6	EA-EM	4059	28	1965-01-01	1984-12-31	FLVA	30.5		8.26	true	true	false	false	true	false	false	false	false	false	false	false	false	GE	1966-10-01	1984-03-31	0.457	0.121	1976-06-30	1976-06-30	4.834	1978-06-16	1978-06-16	0.237	0.319	0.37	0.722	0.961	0.71	6392	6371	99.671	1964-08-01	1984-07-30	11.015	78.4	114.4	142.4	168.3	191.4	722	717	0.0394	0.174	0.1472		0.6314	0.0433	0.2384	0.1267	0.0061	0.5769	1.0				0.0102		0.0754	0.36	0.835	0.906	41.9	15.02	32.9	40.9	11.2	10.2	5.8	142	51	0.32	78.6	27.52	0.315	1.004	0.0577	0.3019	0.833	0.911	0.3899	0.926	0.906			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station installed in 1964 and Closed in 1984 and replaced by 28115 (Mansfield The Dykes) in 1996.	Velocity area station opened in 1958. Trapezoidal critical depth flume installed in 1964. Flume has drowned in past due to summer weed growth and rubbish accumulation. Station situated immediately downstream of STW. Closed in 1984, replaced by 28115 (Mansfield The Dykes) in May 1992. All flows contained.	One rating applied across period of record. Structure designed to measure flows only up to modular limit (3m3/s) with poor fit to gaugings. Flume has drowned in past due to summer weed growth and rubbish accumulation. Station situated immediately downstream of STW. Flows augmented by runoff from urban area of Mansfield which effectively increases catchment area.		Underlying geology Magensian Limestone and Permian sandstone. Catchment almost entirely urbanised: Mansfield and Sutton in Ashfield.	Flows augmented by runoff from urban area of Mansfield which effectively increases catchment area. Runoff influenced by groundwater abstraction/recharge. Runoff increased by effluent returns.
28060	Dover Beck at Lowdham	69.0	SK65294795	465290.0	347950.0	53°01'29.5229"N 1°01'40.9133"W	53.02487	-1.02803	Dover Beck	Lowdham	28.3	EA-EM	4060	28	1971-01-01		FVVA			8.0	true	true	false	false	true	true	false	false	false	true	false	true	true	G	1972-03-01	2023-09-30	0.175	0.019	1976-08-26	1976-08-26	4.255	2007-06-25	2007-06-25	0.049	0.089	0.126	0.317	0.435	0.73	18841	17818	94.57	1971-07-01		2.758	28.7	50.6	87.6	125.0	161.3	686	683	0.1367	0.468	0.2412	0.0211	0.1265	0.1513	0.5478	0.2222	0.0076	0.0706	0.6023			0.3977	0.0112		0.0626	0.27	0.751	0.953	54.0	24.62	33.0	42.6	11.0	16.55	8.15	88	119	0.25	28.7	62.67	0.404	0.768	0.063	0.0293	0.637	0.951	0.0379	0.812	0.954	1971..1986		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir in a trapezoidal channel draining a baseflow dominated catchment affected by significant abstractions.	Crump profile flat V weir (1:10) in a trapezoidal (1:1) channel. Subject to weed growth; low modular limit. Shallow flow upstream and downstream of the weir.	Two ratings applied across period of record, the most recent adjusting the non-modular limb based on new high flow gaugings up to 2007, re-processed back to January-1990. Older high flow gaugings have better fit to the previous curve. The same theoretical flat-V weir equation for modular flows applies over whole period of record. High deviation at low flows may be accounted for by increased gauging error at low flows and silt accumulation. Subject to weed growth; low modular limit but rating has high flow component.	Daily flow peak on 4th August 2018 caused by burst water main in the area which caused water to enter the river from the nearby areas. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). and in August 2024 (WINFAP Files v13).	The river drains SE from a moderate to low relief catchment. The bulk of the catchment comprises outcrop Triassic sandstone. Flanking hills nearer the gauge are of Mercia Mudstone. Predominantly rural catchment with mixed farming.	Baseflow dominated. Affected by spray irrigation abstraction and minor WRW effluent.
28061	Churnet at Basford Bridge	139.0	SJ9823451970	398234.0	351970.0	53°03'53.8897"N 2°01'40.0984"W	53.06497	-2.02781	Churnet	Basford Bridge	132.9	EA-WM	4061	28	1975-01-01		FVVA	67.0		35.2	true	true	true	true	false	false	false	true	false	false	false	false	false	SP	1975-01-01	2023-09-30	1.891	0.266	1996-09-15	1996-09-15	42.73	2019-10-26	2019-10-26	0.446	0.734	1.084	4.17	5.93	0.47	17805	17805	100.0	1975-01-01		27.093	134.6	160.5	217.5	325.2	501.2	982	976	0.0785	0.0517	0.7592	0.0342	0.0641	0.0748	0.0421	0.7703	0.0551	0.0455	0.1196	0.8163		0.0641	0.0051	0.0111	0.4292	0.44	0.442	0.927	92.3	35.2	35.0	43.2	10.2	23.09	11.95	230	232	0.11	134.6	136.34	0.581	0.788	0.0527	0.0214	0.683	0.759	0.0288	0.807	0.747	1974..2015	2011-07-12..2015-10-14	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir in trapezoidal channel draining catchment with significant modifications to flow regime - replaced 28042 in 1975.	Crump profile Flat V weir in trapezoidal channel. Drowns out above +0.55mASD, especially owing to weed growth. Prescribed flow point. Replaced 28042 in 1975. At levels above 2.2mASD bypassing occurs along adjacent canal. Cableway can gauge high flows, but hard to get all due to bypassing.	Four peak flow ratings applied across period of record. Gaugings up to bankfull, but some scatter in gaugings and bypassing beyond 2.2m which makes gauging difficult. Rating less reliable beyond this point but still fits gaugings well. Gaugings carried out using cableway or remote ADCP craft. At lower levels, gaugings waded using ADCP upstream of section or using remote craft.	Rejected data in 2011 and 2012 due to downstream weed grwoth and sedimentation issues, and in 2015 due to equipment issues. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Catchment of moderate relief with mixed geology; primarily Sherwood Sandstone and shales and s'st of the Millstone Grit series. Some blanketing of Boulder Clay and glacial sand and gravel. Contains Leek and Tittesworth Reservoir but otherwise low grade agriculture or pasture.	Substantial modification to flow regime by exports from reservoirs and imports via WRW and industrial usage.
28066	Cole at Coleshill	130.0	SP18178736	418170.0	287360.0	52°29'01.9027"N 1°44'01.9256"W	52.48386	-1.73387	Cole	Coleshill	79.4	EA-WM	4066	28	1973-01-01		FVVA			26.7	true	false	false	false	false	false	false	true	false	false	false	false	false	EI	1973-11-01	2023-09-30	0.963	0.079	2022-08-14	2022-08-14	24.9	2007-07-20	2007-07-20	0.203	0.364	0.537	2.05	3.11	0.43	18231	18231	100.0				79.4	95.8	124.3	161.9	202.4	732	723	0.0755	0.0721	0.2176		0.6139	0.0346	0.0936	0.2417	0.0016	0.6253				1.0	0.1966		0.2776	0.29	0.374	0.989	25.4	39.66	32.0	40.6	10.7	31.66	12.89	127	60	0.24	79.5	119.37	0.825	0.857	0.1147	0.311	0.879	0.857	0.3955	0.944	0.869			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir in trapezoidal channel draining a highly urbanised catchment.	Crump profile Flat V weir in trapezoidal channel, 10.9m at V-full, with floodbanks to contain out-of-channel flow. Eel tiles were put on weir in 2016. Site also referred to as Bacons End. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Gauged from bridge during high flows using a rope - formerly a cableway of span 48m, which extended across floodbanks. Highest flows inundate narrow floodplain. Low flow gaugings measured by waded ADCP or remote craft. There is wide scatter in gaugings below QMED that could lead to underestimation of QMED by up to 30%, although a single gauging above 1.5m which agrees well with the rating. Needs further high flow gaugings and a review of the rating above bankfull.	Blockage of stilling well during 2012 resulted in under-recording - with re-processed flows for 2012 based on downstream site at Swan's Barn used although these are marked as unreprentative in the Peak Flow Dataset. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Substantially urbanised catchment (S Birmingham suburbs). Underlying geology: Mercia Mudstone with extensive coverings of Boulder Clay and glacial sand and gravel.	Responsive catchment. Moderate modification to flows from effluent returns.
28067	Derwent at Church Wilne	1177.5	SK44133165	444130.0	331650.0	52°52'49.8406"N 1°20'44.5028"W	52.88051	-1.3457	Derwent	Church Wilne	31.0	EA-EM	4067	28	1973-01-01		FV IV			5.4	true	true	false	true	false	false	false	true	false	false	true	false	false	SPEI	1973-05-01	2023-09-30	18.835	2.757	1976-09-22	1976-09-22	257.4	2000-11-07	2000-11-07	4.892	8.423	12.45	38.94	53.25	0.63	18415	18415	100.0	1973-07-01		172.5	30.7	91.1	237.8	404.4	635.5	983	979	0.091	0.1194	0.5907	0.0755	0.1007	0.0997	0.1221	0.5578	0.1441	0.0712	0.0141	0.75		0.2359	0.0176	0.0734	0.0965	0.38	0.55	0.951	108.9	27.39	35.8	47.3	10.3	107.5	64.29	241	134	0.14	30.7	1176.63	0.662	0.649	0.0535	0.0307	0.721	0.509	0.0483	0.849	0.569	1972		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir in trapezoidal channel with variable quality high flows data as weir drowns and can back up from Trent. Laserflow velocity index gauge installed in 2021 to run in parallel with weir during calibration.	Crump profile flat vee weir is 27m wide, in trapezoidal channel. Very broad floodplain - flows readily and extensively occur out of bank at approx 2.0mASD. 20km downstream of St Mary's Bridge; substantial abstractions and returns in between weir and site.	High flows of variable quality as weir drowns; calculated by extrapolation from St Mary's Bridge and gaugings at Draycott. At high flows the gauging site becomes cut off due to floodplain flows and is impossible to gauge except through the use of a boat. Three peak flow ratings applied across period of record. Little evidence to support the top end of the rating.	Flows for the period 01/01/2004 onwards re-processed using new ratings following rating review in 2014. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Large catchment with moorland headwaters on Carboniferous Grit and Limestone. Lower reaches on Sherwood Sandstone and Mercia Mudstone. Valley broadens considerably below Derby with extensive sand and gravel terraces. Range of agricultural and industrial activity.	Can back up from Trent. Abstraction point nearby at Draycott can affect flows (e.g. summer 2018).
28068	Lathkill at Pickering Wood	89.7	SK2388665446	423886.0	365446.0	53°11'08.0773"N 1°38'38.4378"W	53.18558	-1.64401	Lathkill	Pickering Wood	107.0	EA-EM	4068	28	1964-01-01		TP				true	false	false	false	false	false	false	false	false	false	false	false	false		1998-09-06	2023-09-30	1.302	0.011	2022-10-18	2022-10-18	9.178	1998-10-27	1998-10-27	0.159	0.573	0.956	2.881	4.06	0.71	9156	9156	100.0				109.6	188.9	300.0	356.7	436.2	1062	1051	0.079	0.0925	0.8005	0.0005	0.0227	0.0608	0.0152	0.9086	0.0103	0.0046		1.0				0.056	0.0239	0.42	0.74	0.997	86.1	6.81	35.2	46.3	10.0	18.47	10.36	287	86	0.23	109.8	84.92	0.108	0.922	0.0144	0.0031			0.0053	0.618	0.562			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound rectangular thin plate weir on the Lathkill, shortly upstream of the confluence of the Wye.	Compound rectangular thin plate weir. Head measurement in a stilling well by means of a float and counter weight driven shaft encoder. Site located 600 metres upstream with confluence of the River Wye giving potential for backing up in flood conditions. Originally built in 1964 with charts commencing in 1969. Station closed in 1982. Site reinstated 1997 as part of Environmental change network following significant works.	Following rating review in 2000 that identified shift from theoretical weir equation curve a new rating curve was applied from 10/10/2000.	Flow data between 01/08/76 to 01/05/81 found erroneous following reopening and review of data and removed from records. Digital records commence in 1998. Data quality deemed poor due to lack of maintenance of the thin plate weir resulting in siltation issues behind the crest. A rating curve was fit to gaugings to try and account for the inaccuracy of the thin plate weir equation. Weed growth upstream of the structure causes issues with the approach conditions. Data also poor at high flows as the structure drowns and no high flow rating available.	SSSI & Habitat's Directive site, located in nature reserve in Derbyshire Peak district. Catchment composed of Dinantion limestone.
28070	Burbage Brook at Burbage	9.1	SK259804	425900.0	380400.0	53°19'11.6343"N 1°36'45.5797"W	53.3199	-1.61266	Burbage Brook	Burbage	290.0	EA-EM	4070	28	1965-01-01	1982-12-31	TP	21.3		40.0	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1965-01-01	1982-09-30	0.17	0.01	1976-08-27	1976-08-27	4.305	1979-03-02	1979-03-02	0.025	0.059	0.105	0.36	0.526	0.44	6482	6061	93.505	1925-11-13	1982-06-30	4.302	282.4	329.3	403.4	426.2	452.7	988	1006	0.127		0.2542	0.5724		0.0679		0.0847	0.8465	0.0009		1.0				0.424		0.38	0.426	1.0	85.3	40.33	38.8	52.3	10.1	5.83	2.63	386	213	0.33	282.4	8.46	0.217	1.242	0.031	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound rectangular thin-plate weir draining a natural peat based catchment.	Compound rectangular thin plate weir (1.5 m wide section at right bank, 4.5 m section 0.15 m higher at left bank, separated by sheet steel divide plate between crests; overall width 6 m). Wing wall stage 1.09 m for small section, over 2m for large weir. No cableway, but footbridge; site unlikely to ever be gauged during events.	One theoretical (modular flow) rating applied across period of record. Lower weir crest around 0.8m above downstream bed, but the very highest events likely to have been drowned due to the narrow channel of gentle slope downstream No spot gaugings.		Natural peat based catchment on Millstone Grit. Lower parts of catchment steep while upper parts flatter.	Very responsive, natural regime. Natural to within 10% at the 95 percentile flow.
28072	Greet at Southwell	46.2	SK71495394	471490.0	353940.0	53°04'40.4825"N 0°56'03.4236"W	53.07791	-0.93428	Greet	Southwell	19.7	EA-EM	4072	28	1974-01-01		FV				true	false	false	false	false	false	true	false	false	true	false	false	true	GI	1974-12-11	2023-09-30	0.31	0.048	1976-08-26	1976-08-26	10.7	2007-06-25	2007-06-25	0.104	0.165	0.218	0.546	0.8	0.7	17826	17826	100.0				20.1	36.6	63.6	106.3	154.2	669	656	0.0387	0.6573	0.2016		0.0971	0.0671	0.6855	0.1773	0.0013	0.0688	0.3265			0.6735	0.0		0.0961	0.27	0.623	0.98	44.0	32.4	33.0	41.7	11.0	18.29	8.78	68	91	0.32	20.2	59.91	0.702	0.796	0.1123	0.0343	0.68	0.977	0.04	0.817	0.909			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir on the Greet to monitor flows where the river crosses a geological boundary.	Crump profile Flat V (1:10) weir, 6m wide, in concrete 1:1 trapezoidal channel, straightened reach. Rough, inclined sides to about 2.5m. Installed to monitor flows where river crosses Sherwood/Mercia Sandstone to Mercia Mudstone boundary.	Drowned flow rating established by high flow gauging in June 2007, full period of record reprocessed.	Short term rises and falls in flow due to upstream sluice gate operation.	Geology: predominantly Sherwood/Mercia Sandstone, with some Mercia Mudstone along southern border. Low relief, river channels lined with clay, sand and gravel alluvium, more extensive u/s. Rural, agricultural land use.	Natural regime with substantial groundwater component - but responsive to significant rainfall events.
28074	Soar at Kegworth	1292.0	SK49162625	449160.0	326250.0	52°49'53.5349"N 1°16'18.3752"W	52.83154	-1.27177	Soar	Kegworth	32.0	EA-EM	4074	28	1978-12-01		US				true	false	false	false	false	false	false	true	false	false	true	false	false	SPEI	1978-12-01	2023-09-30	11.806	1.853	2022-07-21	2022-07-21	128.0	1998-04-11	1998-04-11	3.41	5.08	7.02	25.5	38.6	0.55	16375	13819	84.391				31.5	61.0	102.5	152.0	272.3	662	641	0.0529	0.4199	0.3518	0.0	0.1649	0.0395	0.4834	0.3328	0.0055	0.1334	0.0304		0.4937	0.4759	0.0787		0.6448	0.29	0.409	0.965	36.4	41.74	31.3	39.7	11.1	83.94	46.45	105	356	0.03	31.5	1300.47	1.138	0.863	0.1133	0.0606	0.79	0.825	0.0798	0.886	0.82			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	US gauge of a canalised reach of the Soar, with substantially modified flow.	Multi-path US gauge rebuilt in 1991 (no data Jan and Feb 1991) to improve on accuracy of existing single-path gauge (1978-84). Replaced VA site at Zouch.	Reach at station is canalised part of Soar navigation, has low velocities and wide floodplain. Bypassing possible above bankfull (>3.15m).		Moderate to low relief. Geology: predominantly Mercia Mudstone with some sandstones in the west and Lias clays and l'sts in the east. Ancient hard rocks outcrop in Charnwood Forest. Majority of catchment overlain with Boulder Clay with sands and gravels within river valleys. Catchment contains Leicester and Loughborough. Agricultural land use.	Flows substantially modified by inputs from WRW along Soar valley.
28079	Meece Brook at Shallowford	86.3	SJ8750029073	387500.0	329073.0	52°51'32.3951"N 2°11'13.5384"W	52.859	-2.18709	Meece Brook	Shallowford	81.1	EA-WM	4079	28	1981-01-01		FVVA				true	false	false	false	false	false	false	true	false	false	false	false	false	EI	1981-11-19	2023-09-30	0.624	0.058	1995-08-21	1995-08-21	10.9	2019-10-26	2019-10-26	0.135	0.279	0.421	1.24	1.87	0.63	15291	15291	100.0				81.3	98.0	126.6	169.4	234.6	787	762	0.091	0.3721	0.4796	0.0008	0.054	0.1034	0.293	0.5592	0.0098	0.0272	0.3968	0.0002		0.6031	0.0382		0.2257	0.4	0.584	0.955	44.6	30.85	30.6	38.3	10.2	22.71	11.87	130	195	0.18	81.3	83.41	0.598	0.832	0.0823	0.0056	0.459	0.821	0.009	0.632	0.836			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A crump profile Flat V weir, which does suffer from some interference from groundwater pumping and sewage effluent.	Crump profile Flat V weir, 5m wide, 1:10 cross-slopes, with crest tapping. In 2016 the site has undergone silt clearance and eal pass and pre-barrage fish pass were installed.	Cableway for out-of-bank flows.	In 2016 during the conducted works, a gauge was installed at a nearby location, thus there are continuous measurements in the database.	Low relief, agricultural catchment, draining Sherwood S'st in the North-east headwaters, Mercia Mudstone elsewhere. Overlain by river terrace gravels and alluvium in valleys.	Backs up from d/s bridge. Interference from gw pumping and sewage effluent, net effect of reduction in runoff. Baseflow maintained by glacial valley gravel.
28080	Tame at Lea Marston Lakes	799.0	SP208937	420800.0	293700.0	52°32'26.7493"N 1°41'41.0880"W	52.54076	-1.69475	Tame	Lea Marston Lakes	66.2	EA-WM	4080	28	1957-10-01		MIS	80.0			true	true	true	true	false	false	false	true	false	false	false	false	false	EI	1957-10-01	2023-09-30	13.803	4.927	1959-08-09	1959-08-09	174.0	2007-06-15	2007-06-15	7.25	9.04	10.7	23.5	31.1	0.68	24106	24106	100.0	1981-11-01		117.175	66.5	93.6	131.6	168.9	290.8	722	716	0.0861	0.1505	0.2074	0.0005	0.5235	0.0484	0.1956	0.2164	0.0072	0.5257	0.1385		0.0197	0.8418	0.1824	0.0047	0.3284	0.3	0.472	0.945	30.5	36.22	32.9	40.8	10.8	53.49	29.29	132	79	0.11	66.5	795.1	0.912	0.973	0.1176	0.2705	0.862	1.082	0.3826	0.944	1.116			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Unusual twin bay, chevron shaped Crump profile weirs discharging into an inline settlement lagoon - replaces Lea Marston (28004) in 1982.	Unusual twin bay, chevron shaped Crump profile weirs, 21.5m total width, discharging into an inline settlement lagoon. Replaced 28004 Lea Marston in 1982 (large scatter in gaugings at all levels), record combined. Weed booms were installed in 2001, 30m upstream of twin weirs but produced large head difference. Weed booms damaged/bent when hit by debris during medium/high flow and were replaced with automatic screens. These can produce pulses in flow when cleared and still have a slight head difference but not as bad as previous screens. Automatic screens removed in 2019.	The weirs are affected by drowning due to high levels in downstream lake, but this is only minor. Site is known to bypass at high levels, but this floodplain flow is taken into account in most recent rating. Two peak flow ratings applied across period of record, the most recent is valid from June-2001. Ratings fit gaugings well and account for bypassing.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Substantially urbanised catchment containing Birmingham. Solid geology: Coal Measures group with sandstones in the west and Mercia Mudstone elsewhere. Catchment mostly overlain by extensive cover of Boulder Clay and glacial sand and gravel in equal proportion.	Substantial flow modification from large imports and urbanised areas.
28081	Tame at Bescot	169.0	SP01409569	401400.0	295690.0	52°33'32.5615"N 1°58'50.8112"W	52.55904	-1.98078	Tame	Bescot	107.3	EA-WM	4081	28	1982-09-09		US				true	true	false	true	false	false	false	true	false	false	false	false	false	EI	1991-02-01	2023-09-30	2.135	0.258	2000-08-30	2000-08-30	39.5	2007-06-15	2007-06-15	0.767	1.26	1.624	3.76	5.132	0.64	11930	11930	100.0	1978-11-28		39.12	107.3	127.4	143.5	178.0	270.7	713	712	0.0289	0.0297	0.1259	0.0012	0.7666	0.0264	0.086	0.1241	0.0039	0.7561	0.0139		0.0624	0.9237	0.0151		0.5135	0.31	0.4	0.94	27.3	38.2	33.6	41.1	11.0	18.87	9.72	149	94	0.07	107.4	174.46	0.977	0.918	0.1463	0.4206	0.877	0.98	0.6663	0.957	0.989	1983..1986		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	An ultrasonic gauging station with trapezoidal flume.	Station opened 1989 to provide flow data for water resources, water quality monitoring and flood forecasting. Original flume never reached critical velocity since Tame dredging not carried out to anticipated depth. Ultrasonic installed in 2003 but appeared to be underestimating flows. Replaced with NivuFlow gauge in June 2020. Sensor racks located in same position as previous install, though with a slightly reduced transducer depth so as to minimise impacts of weed and debris accumulation.	Fully modular, has never been overtopped. Some trouble with left bank accretion, incised gauging section, and heavy undergrowth. Difficult to gauge higher flows the largest of which suggests rating underestimates flow. ADCP gaugings performed within ultrasonic section. In-channel weed growth immediately upstream of measurement section can cause the ultrasoinc to over-record.	Low flow data possibly inaccurate, as at best only two paths are in the river. Routine maintenance helps combat silt and weed accumulation within the measurement section. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Almost entirely urbanised catchment just below confluence of upper Tame branches. Solid geology predominantly Coal Measures overlain by extensive Boulder Clay and sand and gravel.	Very responsive. Substantial imports from water reclamation work. Above 70 cumecs washland overspill upstream operates.
28082	Soar at Littlethorpe	183.9	SP54209732	454200.0	297320.0	52°34'15.6393"N 1°12'06.2213"W	52.57101	-1.20173	Soar	Littlethorpe	61.4	EA-EM	4082	28	1971-08-01		XC	5.5			true	true	true	true	false	true	false	true	true	true	false	true	true	E	1971-08-01	2023-09-30	1.343	0.112	1976-08-26	1976-08-26	21.6	2012-11-25	2012-11-25	0.243	0.447	0.683	3.03	4.694	0.49	19054	19054	100.0	1981-11-01		16.205	63.9	78.7	101.6	128.0	151.3	668	637	0.065	0.4916	0.3278		0.1077	0.0219	0.5115	0.3626	0.0119	0.0888			0.0651	0.9349	0.2642		0.6543	0.3	0.445	0.982	26.0	39.95	31.3	38.5	10.8	23.04	12.36	103	64	0.1	63.9	180.56	0.808	0.845	0.1137	0.0361	0.731	0.847	0.0444	0.843	0.859	1982..1985		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Electromagnetic gauge replaced with cross-correlation from April 2018. Downstream of a flood relief channel.	Cross-correlation gauge in a straight reach, replaced an electromagnetic gauge in April 2018. Flood relief channel joins on the right bank just upstream. Bypassed at high flows above 2.4mASD. Banks raised just upstream of station in 1998 to keep flows in bank to a higher stage. Replaced Narborough (28051) in 1982.	Prone to weed growth. During electromagnetic data, a rating was used to derive flows above 2.3m when instrumentation underestimates. EM data during lowest flows unreliable due to very low velocities. Bypassed at high flows above 2.4mASD.		Predominantly agricultural catchment just south of Leicester. Geology predominantly Mercia Mudstones overlain by extensive Boulder Clay and glacial gravel cover. Significant river terraces and alluvium in lower reaches.	Substantial imports via WRW.
28083	Trent at Darlaston	195.2	SJ88573550	388570.0	335500.0	52°55'00.4687"N 2°10'17.1497"W	52.9168	-2.17143	Trent	Darlaston	85.5	EA-WM	4083	28	1982-01-01		VA				true	true	false	true	false	false	false	true	false	false	false	false	false	PEI	1982-12-01	2023-09-30	3.682	1.15	2017-06-26	2017-07-08	55.6	2019-10-26	2019-10-26	1.504	2.113	2.72	6.66	9.19	0.64	14914	14357	96.265	1982-04-05		35.377	86.1	114.8	151.8	206.9	331.3	829	819	0.0661	0.0855	0.4645	0.0049	0.3743	0.072	0.0869	0.464	0.0201	0.3508	0.0523	0.0413		0.9065	0.0132		0.6372	0.44	0.443	0.942	60.3	33.54	31.3	40.0	9.9	31.05	16.58	157	225	0.17	86.1	193.71	0.643	0.889	0.0742	0.1973	0.81	1.048	0.2175	0.879	1.04			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Multipath ultrasonic gauge gauging a relatively urban catchment near Stoke-on-Trent.	Multipath ultrasonic gauge installed beneath A34 road bridge on a gentle curve.	Out-of-bank flows inferred by the rated flow from spot gaugings. Three peak flow rating applied across period of record, used for flood forecasting only.	Recorded data from 01/04/1985 - 24/08/1987 appears suspect - levels too low. Station undermined in 1987 flood, reconstructed 1990/1. In 2001-2002, gauge not performing v well. Transducers failing constantly, especially lower ones (due to silt). Problems in 2002-2003 with rubble in channel now creating skew flows & siltation.	Moderate relief catchment, substantially urbanised with Stoke-on-Trent and Newcastle-under-Lyme. Geology mainly Coal Measures and Marls, Millstone Grit and subordinate Sherwood S'st, widely covered by Boulder Clay. Mining, industrial and mixed agricultural land use.	Quite responsive but flow regime dominated by Strongford WRW discharge (Stoke-on-Trent).
28085	Derwent at St Mary's Bridge	1054.0	SK35393688	435390.0	336880.0	52°55'41.4031"N 1°28'29.9738"W	52.92817	-1.47499	Derwent	St Mary's Bridge	44.0	EA-EM	4085	28	1936-01-01		US	92.0			true	true	true	true	false	false	false	true	false	true	false	false	true	SRPGEI	1935-10-02	2023-09-30	17.552	1.82	1952-08-30	1952-08-30	334.0	1965-12-10	1965-12-10	4.66	8.3	11.8	36.8	50.3	0.63	32141	32107	99.894	1983-05-25		135.29	43.9	111.6	262.6	414.0	635.5	1017	1012	0.0974	0.1019	0.6192	0.0846	0.0731	0.1061	0.0971	0.5854	0.1607	0.0453	0.0019	0.8268		0.1713	0.0068	0.0821	0.0776	0.39	0.55	0.949	117.3	26.16	36.3	48.2	10.2	90.38	52.56	259	131	0.12	43.9	1051.02	0.486	0.755	0.0396	0.0166	0.613	0.639	0.0308	0.79	0.666			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ten-channel, interleaved cross path US gauge in the centre of Derby. Replaced Longbridge Weir (28010, 1935-1986) - combined record held at St Marys Bridge.	Ten-channel, interleaved cross path US gauge in the centre of Derby, 0.5km upstream of Longbridge Weir (28010) which it replaced. Opened in 1984, ultrasonic gauge reconfigured in March 1993. Record combined with 28010 (a long, curved broad-crested masonry weir with complex rating history, very insensitive).	Negligible bypassing. Two ratings shown are applied to Longbridge Weir record, the most recent valid from August 1970 when the weir was narrowed. Station is ultrasonic thereafter.	Following statistical assessment of continuity, mean and peak flow record shown are a combination of 28010 (Longbridge Weir) to 1986, and St Marys Bridge thereafter; POT thresholds prior to merge were 105.667 and 69.256 cumecs respectively. Chart and CEH POT date ranges are for 28010. Some Longbridge AMAX pre-1985 are of a smaller magnitude than daily mean flows as instantaneous data have been re-processed following rating review. Continuous 15-minute data are awaiting digitisation and re-processing. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Large, predominantly upland catchment draining Millstone Grit and Carboniferous Limestone. Lower reaches drain Coal Measures on the Lb and Triassic sandstones and marls on the Rb. Peat moorland headwaters; forestry, pasture and some arable. Contains the towns of Matlock and Buxton.	Substantial flow modification owing to Derwent reservoirs, mill operations (particularly before 1970s), and PWS abstractions.
28086	Sence at South Wigston	113.0	SP58819768	458810.0	297680.0	52°34'25.5684"N 1°08'01.1522"W	52.57377	-1.13365	Sence	South Wigston	66.5	EA-EM	4086	28	1983-01-01		IV				true	true	true	true	false	false	false	false	false	false	false	false	false	EI	1971-08-01	2023-09-30	0.95	0.003	1984-07-19	1984-09-09	23.77	2000-11-06	2000-11-06	0.134	0.24	0.399	2.182	3.617	0.41	19054	18891	99.145	1983-09-01		21.295	68.2	86.7	120.3	162.8	221.8	666	642	0.0575	0.421	0.4109	0.0002	0.1023	0.0176	0.4773	0.4294	0.0018	0.0727			0.9963	0.0037	0.0093		0.8537	0.29	0.36	0.997	36.3	43.28	32.8	40.9	11.9	26.35	12.62	123	285	0.15	68.2	126.21	0.584	0.724	0.0737	0.0274	0.769	0.468	0.0348	0.862	0.5	1983..1985		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Laserflow index velocity gauge post 2017. Previously electromagnetic gauge set in 1:1 formalised banks and flood embankment 20m downstream of the control - replaces Blaby (28054), records combined.	Laserflow index velocity gauge from 2017. Previously an electromagnetic gauge set in 1:1 formalised banks and flood embankment 20m downstream of the control (dismantled railway bridge). Sharp bend immediately downstream and mill stream confluence upstream. Replaces Blaby (28054).	No bypassing - all flow goes through site. In 2002 the electromagnetic flows were out by 10% - a new coil/cable was installed in March 2002.	In 2002 the electromagnetic flows were out by 10% - a new coil/cable was installed in March 2002. Missing data July-December 2016 due to EM gauge failure. Gauge replaced with LaserFlow index velocity gauge in January 2017.	Moderate to low relief catchment to E and S of Leicester. Mainly Lower Lias (mudstones and l'sts) but wholly blanketed by Boulder Clay and alluvium except for headwaters. Urbanised downstream end, otherwise arable and grazing land use.	Moderately responsive. Substantially augmented by WRW discharges, particularly Wigston.
28087	Tame at Perry Park	196.1	SP0604291887	406042.0	291887.0	52°31'29.3725"N 1°54'44.5565"W	52.52483	-1.91238	Tame	Perry Park	98.0	EA-WM		28	1983-01-01	1993-07-30	FL				true	false	false	false	false	false	false	false	false	false	false	false	false		1989-07-01	1993-05-31	2.572	1.339	1992-05-27	1992-05-27	22.89	1989-12-14	1989-12-14	1.43	1.777	2.077	3.897	5.501	0.72	1431	1431	100.0				96.1	122.7	142.2	174.8	270.7	713	712	0.0341	0.0317	0.1422	0.0011	0.7444	0.0306	0.101	0.1315	0.0035	0.7291	0.0264		0.0702	0.9034	0.0148		0.5052	0.31	0.4	0.944	29.3	38.14	33.6	41.2	11.1	28.15	17.56	146	90	0.07	96.1	195.78	0.969	0.985	0.1399	0.4015	0.873	1.022	0.6337	0.953	1.029			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flume gauging station with a responsive flow regime.	Flume gauging station.			Low-lying catchment with large urban component.	Responsive regime with significant artificial influences.
28091	Ryton at Blyth	231.0	SK6314587128	463145.0	387128.0	53°22'38.0715"N 1°03'08.1822"W	53.37724	-1.05227	Ryton	Blyth	8.0	EA-EM	4091	28	1985-01-01		IV				true	true	true	true	false	false	false	true	false	false	false	false	false	EI	1984-05-15	2023-09-30	1.598	0.149	1990-08-05	1990-08-05	33.76	2019-11-08	2019-11-08	0.607	0.971	1.22	2.79	3.85	0.73	14383	14293	99.374	1984-03-01		11.605	9.5	24.0	62.6	121.1	156.0	626	646	0.1193	0.5525	0.1591	0.0006	0.1579	0.0988	0.6326	0.1346	0.0062	0.1242	0.653			0.347		0.0006	0.0567	0.3	0.758	0.957	31.5	17.71	31.7	41.8	11.4	40.05	18.39	71	79	0.26	9.5	228.23	0.544	0.918	0.0908	0.0682	0.769	1.098	0.0715	0.864	1.117			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Laserflow index velocity gauge post 2021. Previously electromagnetic station installed in March 1984. Replaced Serlby Park (28016).	Laserflow index velocity gauge operational from 2021, in a straight reach downstream of a gentle bend. Previously electromagnetic station installed in March 1984. Data transmitted to West Stockwith pumping station to control regime to the tidal Trent.	Extreme events overtop flood banks. New laser gauge provides reasonable quality data.	Performance of the Laser flow gauge and the previous electromagnetic gauge is reasonable during full range. Heavy weed growth through the entire river causes backing up of levels during the summer. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Moderate and low relief catchment. Headwaters drain Magnesian Limestone; bulk underlain by Permian Marl and Sherwood Sandstone. Mainly Drift free. Apart from Worksop, wholly rural, mainly arable farming.	Deep, slow, baseflow dominated flow regime. Moderate net effect on flows by WRWs and abstraction.
28093	Soar at Pillings Lock	1108.36	SK56551806	456550.0	318060.0	52°45'25.9138"N 1°09'48.6275"W	52.7572	-1.16351	Soar	Pillings Lock	38.0	EA-EM	4093	28	1985-01-01		US				true	false	false	false	false	false	false	false	false	false	false	false	false	SPEI	1986-08-01	2023-09-30	9.591	1.468	1991-08-25	1991-08-25	124.8	1998-04-11	1998-04-11	2.52	3.85	5.372	21.31	32.74	0.52	13575	13472	99.241				36.9	67.5	106.0	151.4	245.8	660	640	0.0513	0.422	0.3555	0.0	0.161	0.0353	0.4834	0.3392	0.0057	0.1312	0.021		0.5529	0.4261	0.0862		0.681	0.29	0.402	0.963	36.1	41.74	31.2	39.8	11.2	68.97	36.98	108	334	0.02	39.0	1110.11	1.031	0.872	0.1065	0.06	0.8	0.748	0.0774	0.886	0.758			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Multipath US gauge on the Soar Navigation Canal, subject to significant flow modification.	Multipath US set in Soar Navigation (merges with Grand Union Canal) 100m u/s of Pillings Lock. Low banks. US transducers on the broad floodplain to calibrate out of bank flows.			Moderate to low relief catchment with Triassic Marls and S'st to the west and Lias clays and l'sts to the east, widely blanketed in Boulder Clay. Ancient hard rocks outcrop in Charnwood Forest. Lower catchment dominated by Leicester; headwaters rural.	Very substantial flow modification from WRW and reservoirs in Charnwood Forest.
28095	Tame at Hopwas Bridge	1421.66	SK18100517	418100.0	305170.0	52°38'38.2967"N 1°44'02.1586"W	52.64397	-1.73393	Tame	Hopwas Bridge	54.5	EA-WM	4095	28	1986-01-01		VA	95.0			true	true	true	true	false	false	false	true	false	false	true	false	false	N	2000-01-01	2023-09-30	23.132	8.105	2020-08-05	2020-08-05	295.0	2007-06-16	2007-06-16	10.9	15.5	18.85	38.54	48.5	0.7	8674	8674	100.0	1986-03-01		129.715	56.0	80.0	118.9	160.9	290.8	704	691	0.0831	0.2806	0.2375	0.0005	0.3732	0.0475	0.3469	0.2291	0.0108	0.3569	0.1599		0.0209	0.8191	0.1584	0.0026	0.3461	0.3	0.488	0.938	29.6	35.86	32.5	40.3	10.7	70.49	38.52	120	83	0.05	56.0	1429.23	0.987	0.934	0.1287	0.1803	0.844	1.183	0.2497	0.932	1.21	1986		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station used primarily for water quality purposes - replaces 28005, Elford which was several km upstream. Very broad flood plain on both banks.	Velocity area station immediately downstream of Hopwas road bridge with a cableway between training banks that contain the majority of high flows. Station used primarily for water quality purposes. Some bypassing, but accounted for in rating. Site replaces 28005, Elford which was several km upstream. Very broad flood plain on both banks.	Suffers from heavy weed growth which contributes to over-estimation of runoff requiring retrospective rating adjustments (not shown) - but all are based on the winter curve applied here as the majority of floods are in winter and flatten weeds. As a result of these weeds there is significant scatter in gaugings. Ratings revised in 2016. Three peak flow ratings across period of record.	Magnitude of June and July 2007 flood events subject to considerable overestimation due to hydraulic conditions and increased channel and floodplain rugosity. Gaugings taken during events suggest peak flows of around 210 cumecs in June and 200 cumecs in July 2007. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Catchment predominantly Mercia Mudstones with some shales and limestones. Overlain by Boulder Clay in the headwater with sands and gravels within the valleys. Mixed farming and urbanised catchment.
28101	Tame at Sheepwash	27.93	SO9739791756	397397.0	291756.0	52°31'25.2245"N 2°02'23.2625"W	52.52367	-2.0398	Tame	Sheepwash	127.0	EA-WM	4101	28	1983-01-01	2020-11-22	FL				true	false	false	false	false	false	false	false	false	false	false	false	false		1985-10-28	2020-09-30	0.303	0.036	1989-03-16	1989-03-31	10.28	2007-07-20	2007-07-20	0.061	0.102	0.164	0.622	1.007	0.58	12757	11970	93.831				126.5	138.2	163.8	208.4	270.7	743	743	0.0221	0.0095	0.05	0.0023	0.8579	0.0223	0.0018	0.1049		0.8667				1.0			0.2473	0.31	0.474	0.945	41.3	35.08	35.6	43.3	11.2	10.78	5.1	169	7	0.31	127.3	33.1	0.721	0.74	0.1075	0.511	0.883	0.953	0.8065	0.968	1.004			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station used for flood warning purposes and a time of travel pollution assessment point. Key reservoir site.	Velocity area station commissioned in October 1985 to measure levels on the uppermost reaches of the River Tame in the Tipton and Oldbury area. River heads northwest from its source at Oldbury towards West Bromwich and the next flow station at Bescot. Gauge house replaced in July 2012 following vandalism in June 2010 (station closed between this period). Either side of the channel are two large balancing lakes which act as a flood storage area.	Channel is a uniform concrete flume with a trapezoidal cross-section. High level gaugings problematic due to rapid response times following heavy rainfall. The channel is generally silt free with no or very minimal weed growth.	Station closed November 2020.	Heavy urbanised.	Flashy regime owing to the highly urbanised catchment and high levels of surface run-off.
28102	Blythe at Whitacre	194.3	SP21219115	421210.0	291150.0	52°31'04.1668"N 1°41'19.9084"W	52.51782	-1.68886	Blythe	Whitacre	71.5	EA-WM		28	1986-01-01	1998-05-27	EM				true	false	false	false	false	false	false	false	false	false	false	false	false	E	1987-04-30	1996-02-17	1.203	0.058	1995-08-20	1995-08-24	21.61	1989-12-15	1989-12-15	0.225	0.354	0.47	2.883	5.083	0.4	3216	3066	95.336				69.7	89.2	118.2	144.3	183.1	711	703	0.1545	0.34	0.33		0.1614	0.0732	0.388	0.3662	0.0105	0.1534			0.0095	0.9905	0.2275	0.0195	0.2475	0.29	0.446	0.937	26.0	38.84	31.6	40.1	10.5	48.69	24.4	117	26	0.06	69.8	192.18	0.877	0.978	0.1141	0.0533	0.753	1.262	0.0615	0.891	1.309			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Electromagnetic gauging station immediately upstream of confluence with the River Cole. Some data quality issues.	EM gauge immediately upstream of confluence with R. Cole. Owned by Severn-Trent plc, operated by NRA/EA until late 1996. Residual flow gauge for PWS abstraction for Shustoke Res. Channel approx 16m wide.	Widespread u/s inundation in flood, backs up from Tame and Cole.	Data quality poor; numerous gaps in record.	Low relief catchment SE of Birmingham. Mercia Mudstone faulted against Coal Measures in extreme E. Predominantly cover of glacial sands and gravels and terrace gravels. Mainly rural with mixed farming but contains part of Solihull and Dorridge. All river u/s of gauge designated as SSSI.	Net effects of WRW and PWS modest but all the flow may be abstracted. Quite responsive.
28103	Henmore Brook at Carsington Outflow	15.8	SK24295016	424290.0	350160.0	53°02'53.3613"N 1°38'20.8193"W	53.04816	-1.63912	Henmore Brook	Carsington Outflow	163.9	EA-WM	4103	28	1988-04-01		TP				true	false	false	false	false	false	false	true	false	false	false	false	false		1998-01-01	2023-09-30	0.047	0.003	2010-03-18	2010-03-18	1.15	2006-05-22	2006-05-22	0.031	0.037	0.041	0.062	0.071	0.88	9404	9375	99.692				164.7	186.6	225.5	306.2	367.4	882	927	0.0577	0.0955	0.6185		0.0363	0.0902	0.0289	0.6587	0.0085	0.0122		1.0					0.222	0.35	0.499	0.99	93.9	25.33	35.9	43.6	11.2	6.9	3.49	233	168	0.29	164.3	14.59	0.155	0.795	0.0164	0.0003			0.0054	0.5	1.108			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular thin-plate weir measuring outflows from Carsington Water (used as storage in Derwent compensation scheme).	Rectangular thin-plate weir with a central notch and sides for large releases from Carsington Water.
28109	Sow at Walkmill	10.9	SJ7928629760	379286.0	329760.0	52°51'53.7088"N 2°18'32.8721"W	52.86492	-2.30913	Sow	Walkmill	89.2	EA-WM	4840	28	1979-07-01	2016-07-13	VN				true	false	false	false	false	false	false	false	false	false	false	false	false		1989-07-01	2016-07-13	0.077	0.015	1997-08-09	1997-10-04	0.269	2000-11-06	2000-11-06	0.039	0.061	0.074	0.112	0.123	0.88	9875	9875	100.0				92.4	109.0	137.9	173.9	220.6	815	748	0.1374	0.2714	0.5811		0.0101	0.1059	0.2597	0.607	0.0216	0.0036	0.9105			0.0895	0.0539			0.34	0.798	0.913	76.4	19.99	30.5	39.1	10.2	9.38	4.45	140	178	0.22	93.2	10.97	0.204	0.74	0.0242	0.0042			0.0044					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	V-notch weir opened in 2002. Some drops in flow due to upstream sluice gate. Station closed in July 2013.	V-notch weir. Site located 200m d/s of mill pool. Station closed in July 2013.		Drop in flow on 28/8/07 thought to be due to closure of sluice u/s of station. Analomous drop in flows during Sep and Oct 2011 due to sluice action.	Low relief, agricultural catchment. Predominately sandstone.
28110	Oldacre Brook at Brocton	2.8	SJ96132023	396130.0	320230.0	52°46'46.6973"N 2°03'31.7269"W	52.77964	-2.05881	Oldacre Brook	Brocton	88.8	EA-WM	4852	28	1985-12-01	2013-01-16	VN				true	false	false	false	false	false	false	false	false	false	false	false	false		1985-12-12	2013-01-16	0.011	0.003	2011-08-09	2011-10-04	0.158	1992-05-29	1992-05-29	0.005	0.008	0.01	0.018	0.022	0.78	9898	9835	99.364				88.6	101.9	141.7	192.2	206.3	736	725	0.0692	0.1232	0.4211	0.3371	0.0428	0.0781	0.184	0.4804	0.2075	0.0443	1.0							0.32	0.881	0.97	55.6	15.03	32.5	40.1	10.8	4.45	1.97	144	320	0.42	88.9	2.8	0.202	0.346	0.0277	0.0107	0.619	0.601	0.0223	0.717	0.628			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Two thin-plate V-notch weirs that measure Oldacre Brook, and one of it's small tributaries. Station closed in January 2013.	Two thin-plate V-notch weirs in one structure; the right measures Oldacre Brook, left a small tributary. Station closed in January 2013.	Structures suffer from heavy silting and debris, with both known to drown-out.		Small, rural, sandstone catchment. Drains western edge of Cannock Chase AONB and passes through Brocton Hall golf course.
28112	Churnet at Quixhill	213.0	SK09464218	409460.0	342180.0	52°58'36.7954"N 1°51'38.0358"W	52.97689	-1.86057	Churnet	Quixhill	89.7	EA-WM	4142	28	1998-06-01		FV+VA				true	false	false	false	false	false	false	true	false	false	false	false	false		2005-01-01	2023-09-30	3.286	0.78	2018-09-02	2018-09-02	54.28	2019-10-26	2019-10-26	1.014	1.435	2.0	6.868	10.3	0.53	6847	6847	100.0				89.4	156.0	217.8	320.1	501.2	956	964	0.1252	0.0582	0.7307	0.0237	0.0532	0.1324	0.042	0.7387	0.0437	0.0348	0.1356	0.7404		0.124	0.0033	0.0071	0.3843	0.44	0.483	0.938	101.8	33.54	34.5	42.5	10.3	43.03	25.83	228	227	0.15	89.4	213.09	0.589	0.943	0.0495	0.0153	0.653	1.046	0.0221	0.783	0.988			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Triangular profile Flat Vee weir set within vertical wing walls, with brick gauge house and cableway opened in 1998.	Station was built in 1998 and is located on the late Joseph Cyril Bamford Estate (JCB) near the village of Rocester.	A Flat Vee triangular profile weir with vertical side walls provides a hydraulic control to measure discharge. The site has a cableway for carrying out ADCP gaugings, though can also be done using a remote controlled ADCP.	Complete period of record flow. Notable peak events in November 2000 and October 2019.	The River Churnet originates approximately 30km North of Quixhill gauging station on the Middle Hills (7km North East of Leek, Staffordshire). The river flows in a south-westerly direction where it flows into Tittesworth Reservoir. The River Churnet then continues in a southerly direction through Staffordshire.	The Churnet is generally baseflow dominated and can rise quite rapidly following heavy rainfall, owing to the upland nature of the catchment. It is a very silty river often with high sediment load except at the lowest of flows.
28113	Erewash at Pinxton	26.9	SK45135421	445130.0	354210.0	53°04'59.5589"N 1°19'39.7108"W	53.08321	-1.3277	Erewash	Pinxton	80.8	EA-EM	4146	28	2000-02-25		VA				true	false	false	false	false	false	false	false	false	false	false	false	false		2000-02-25	2023-09-30	0.289	0.065	2022-09-24	2022-09-27	23.02	2007-06-25	2007-06-25	0.095	0.141	0.184	0.519	0.824	0.56	8619	8544	99.13				81.4	104.6	147.3	173.0	194.0	750	727	0.0465	0.2856	0.2673	0.0005	0.3966	0.0694	0.4378	0.1932	0.0127	0.2839	0.5709			0.4291			0.0653	0.35	0.551	0.97	55.4	26.97	32.1	40.7	11.1	9.78	5.07	142	220	0.14	81.4	26.93	0.274	0.981	0.0396	0.1215	0.733	1.103	0.1825	0.891	1.101			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Informal weir rated section in the upper reaches of the Erewash.	Gauge in the upper reaches of the Erewash.		Some missing data between 2001 and 2002. Localised flooding prevents access for gaugings during recent extreme events, with extreme high flows beyond the limit of the rating curve. Treat with caution. Low flow section of rating improved in 2023 and historic flow data reprocessed.	Semi-urbanised catchment, draining agricultural land and coal mines.
28115	Maun at Mansfield the Dykes	31.5	SK55976362	455970.0	363620.0	53°10'00.3516"N 1°09'51.2757"W	53.16676	-1.16424	Maun	Mansfield the Dykes	69.2	EA-EM	4115	28	1992-05-01		FV				true	true	false	true	false	false	false	false	false	false	false	false	false	E	1992-05-01	2023-09-30	0.698	0.321	1996-07-27	1996-07-27	6.85	2007-06-25	2007-06-25	0.439	0.528	0.597	1.03	1.3	0.79	11475	11452	99.8	1992-05-01		12.9	71.1	104.1	139.2	167.3	191.4	719	714	0.0382	0.17	0.1535		0.6311	0.0435	0.2361	0.1301	0.0072	0.5753	1.0				0.0092		0.0679	0.36	0.841	0.915	43.4	14.92	32.8	40.7	11.1	12.12	7.11	137	51	0.32	71.2	30.56	0.296	1.058	0.0539	0.2965	0.829	0.955	0.3886	0.926	0.939	1991		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir that replaces (1996) 28059 Mansfield STW - closed in 1984.	Crump profile Flat V (1:10) weir, 4.8m wide, low vertical wingwalls set in wider channel. Lb at about 2m, Rb higher. Weir prone to u/s siltation - sand is mobile, especially under high flow conditions and is washed away in high events - results in variable levels and scatter in gaugings. Replaced 28059 Mansfield - old site was replaced due to drowning of the flume and accumulation of rubbish. Structure situated downstream of sewage works in Mansfield.	Flows are derived from the Flat-V Theoretical equation throughout the full flow range. Mobilisation of sand results in variable levels, scatter in gaugings. Difficult to gauge above 0.4mASD due to very flashy response; difficult to catch events. Structure becomes non-modular at high flows.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Moderate relief catchment near headwaters of Maun. Rises on Magnesian Limestone and crosses onto Sherwood S'st. Heavily urbanised with Mansfield and Sutton in Ashfield immediately u/s.	Urbanised catchment. Very responsive to rainfall, very rapid rise and fall in the hydrograph. Low flows dominated by sewage effluent and augmented by runoff from urban area that effectively increases catchment area. Very atypical water balance. Second rise in flood hydrograph often follows initial peak from urban runoff, as flows from the rural upper catchment move downstream.
28116	Maun at Whitewater Bridge	157.0	SK66327040	466320.0	370400.0	53°13'35.4481"N 1°00'28.9566"W	53.22651	-1.00804	Maun	Whitewater Bridge	31.9	EA-EM	4116	28	1992-11-01		US				true	false	false	false	false	false	false	false	false	false	false	false	false	GE	1997-01-01	2023-09-30	0.913	0.282	2006-07-16	2006-07-16	11.2	2007-06-25	2007-06-25	0.488	0.653	0.769	1.42	1.815	0.75	9769	9755	99.857				34.2	59.6	95.1	152.8	191.7	682	681	0.1831	0.3883	0.1416	0.0202	0.2572	0.1996	0.462	0.1066	0.0235	0.2047	0.8892			0.1108	0.0075		0.0339	0.27	0.824	0.938	38.0	17.82	32.4	41.4	11.3	27.35	15.12	101	72	0.24	34.2	156.0	0.406	0.833	0.0667	0.1031	0.806	1.22	0.127	0.909	1.256			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Previously Flat V Weir on the Maun to measure flows downstream of the Sherwood sandstone. Weir was removed in Jan/ Feb 2019 and replaced with a time of flight ultrasonic flow gauge. Weir also drowned intermittently between October 2015 and April 2019 for which a tailwater correction was applied to account for non-modularity.	Time of flight ultrasonic flow gauge post Jan 2019. Pre-2019 Flat V weir, 5.2m wide with 0.64m high wingwalls. Built to measure flows d/s of the Sherwood Sandstone aquifer and to complement gauge at Mansfield (28115) which measures flows u/s of aquifer. Weir drowned during June 2007 high flows, flows over wingwalls.		Record from 1997-present.	Geology predominantly Sherwood Sandstone with Limestone in the west and Mercia Mudstone to the east. Little Drift cover. Contains urban areas of Mansfield and Sutton in Ashfield. Mixed land use of arable and woodland.	The Maun is influent in the Sherwood Sandstone reaches; low flows can decline below those at 28115.
28117	Derwent at Whatstandwell	755.0	SK33145456	433140.0	354560.0	53°05'14.0386"N 1°30'23.9545"W	53.08723	-1.50665	Derwent	Whatstandwell	68.7	EA-EM	4117	28	1992-11-01		FV				true	false	false	false	false	false	false	false	false	false	false	false	false	SRPGEI	1997-01-01	2023-09-30	14.704	2.97	2011-10-05	2011-10-05	201.4	2000-11-06	2000-11-06	4.355	7.158	10.57	29.2	39.04	0.68	9769	9769	100.0				69.0	167.8	307.2	443.8	635.5	1110	1099	0.1111	0.0527	0.6469	0.1189	0.0388	0.1202	0.0214	0.6086	0.223	0.0208		0.9646		0.0354	0.0096	0.1155	0.0455	0.4	0.574	0.951	133.1	25.05	37.4	50.6	10.1	66.18	39.42	306	125	0.12	69.0	747.55	0.37	0.835	0.0297	0.0073	0.496	0.822	0.0162	0.714	0.759			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Large Flat V weir on the Derwent, built to provide flow information for the Ambergate/Carsington intake. Flows substantially affected by Derwent reservoirs.	Large Flat V weir, 25m wide, u/s of A6 road bridge. Built to provide accurate flow info. u/s of Ambergate/Carsington intake point.		Period of record 1997-present.	Responsive upland catchment, peat covered moorlands in headwaters. Main Derwent drains the Millstone Grit; the largest tributary, the Wye, drains Carboniferous L'st. Land use mainly pasture and forestry.	Flows substantially affected by Derwent reservoirs.
28118	Meden at Perlethorpe	97.0	SK64707121	464700.0	371210.0	53°14'02.3736"N 1°01'55.7101"W	53.23399	-1.03214	Meden	Perlethorpe	31.7	EA-EM	4118	28	1994-01-01		XC				true	false	false	false	false	false	false	false	false	false	false	false	false		2002-01-01	2023-09-30	0.799	0.139	2022-08-14	2022-08-14	11.3	2007-06-25	2007-06-25	0.38	0.557	0.681	1.272	1.623	0.81	7943	5660	71.258				34.3	53.1	90.1	162.6	205.0	687	676	0.1561	0.4312	0.1784	0.0421	0.1853	0.1776	0.5293	0.1463	0.0181	0.1238	0.9661			0.0339			0.0618	0.3	0.844	0.924	38.0	14.25	32.6	41.3	11.0	28.14	14.9	103	72	0.25	34.5	97.0	0.364	0.935	0.0604	0.0784	0.736	1.147	0.077	0.861	1.199			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Cross-correlation gauge on the Meden to measure flows downstream of the Sherwood Sandstone.	Replacing d/s station (28045). Data from cross-correlation gauge commences in 2019. Prior measurement from Flat V weir with 1:10 cross slopes, Crump profile, 5.2m wide, wing walls at 0.64m.		No daily flow data available July 2013 - September 2016 due to subsidence of the weir. Flows from October 2016 onwards are calculated through a new rating and from February 2019 onwards from the cross-correlation gauge. June 2007 high flows were over the wingwalls of the structure.	Moderate to low relief catchment underlain by the Notts coalfield. The Maun rises on generally sandy facies of the Magnesian Lst, crosses onto Sherwood Sst, the gauge sited close to the junction with the Mercia Mudst. Upper catchment dominated by urban centres (Mansfield) and mining spoil; middle and lower reaches rural and forest.	Subdued response with WRW effluent augmenting low flows.
29001	Waithe Beck at Brigsley	108.3	TA25280160	525280.0	401600.0	53°29'46.2869"N 0°06'46.5406"W	53.49619	-0.11293	Waithe Beck	Brigsley	15.7	EA-LN	029001	29	1960-01-01		FL		17.0	2.9	true	true	false	true	false	false	false	true	false	false	false	false	false	PGEI	1960-10-01	2023-09-30	0.302	0.009	1991-09-01	1996-07-31	6.42	2007-06-25	2007-06-25	0.062	0.128	0.195	0.672	0.908	0.85	23010	22974	99.844	1960-08-19		2.038	16.4	56.0	94.5	127.3	161.8	730	691	0.0347	0.7294	0.1974		0.0196	0.0374	0.8487	0.0876	0.0034	0.0217	1.0				0.0084		0.2169	0.29	0.88	0.961	52.2	11.46	32.1	40.1	10.3	24.3	13.94	94	37	0.19	16.4	108.75	0.282	0.815	0.0416	0.0045			0.0064	0.587	0.928			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Structure is able to contain all flows, gauging a rural, predominantly Chalk, catchment with significant artificial influences.	Broad trapezoidal flume (1.83m wide at base) with theoretical rating confirmed to 0.9 cumecs. All recorded flows have been contained within the structure.	Theoretical rating applied across period of record.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly Chalk catchment with rural (mainly arable) land use.	Groundwater abstraction near Grimsby and irrigation abstractions have significant effect on low flows. Also abstractions for PWS and industry. Runoff increased by effluent returns.
29002	Great Eau at Claythorpe Mill	77.4	TF41607931	541600.0	379310.0	53°17'30.6199"N 0°07'22.5252"E	53.29184	0.12292	Great Eau	Claythorpe Mill	6.6	EA-LN	029002	29	1962-01-01		C B	12.8	1.0	11.6	true	true	false	true	false	false	false	true	false	true	false	false	true	GI	1962-10-01	2023-09-30	0.638	0.154	1991-09-07	1991-09-26	7.35	1968-11-01	1968-11-01	0.251	0.397	0.526	1.14	1.37	0.88	22280	22226	99.758	1962-01-09		3.263	8.5	22.3	63.7	115.4	148.3	718	692	0.066	0.8234	0.0988		0.0094	0.059	0.8465	0.0905	0.0012	0.0016	1.0				0.1229		0.2288	0.28	0.713	0.952	52.5	21.83	34.8	41.6	11.2	17.84	9.08	68	69	0.19	8.5	80.43	0.402	0.641	0.0627	0.0057	0.295	0.7	0.0019			1962		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound structure gauging a rural, predominantly Chalk catchment with some artificial influences.	Simple low flow Crump profile weir 3.073m wide with flanking broad-crest sections. Total width 9.687m.	A cableway at Abby Bridge was used to gauge flows in the early 1970's. Both components are theoretically rated with rating valid to 6.976 cumecs, flows above this limit are missing. One rating applied across period of record.	Flows to May 1973 suspect due to error in gauged head and rounding of crest during cleaning. Flows above the rating limit are missing e.g. 25/06/2007. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly Chalk catchment with around one third of catchment covered with superficial deposits (Boulder Clay, sands and gravels and alluvium - gravel beds of glacial origin are found at Aby, South Thoresby, Thetford, South Ormsby and Brinkhill. Deposits of beach gravels on the edge of Chalk cut through the Chalk and a line of springs are formed which contribute a high baseflow to the Eau. Land use is predominantly rural. Rural, predominantly arable land.	Runoff influenced by gw abstraction/recharge. Small amounts of abstraction for irrigation in summer.
29003	Lud at Louth	55.2	TF337879	533700.0	387900.0	53°22'15.7940"N 0°00'29.1805"E	53.37105	0.00811	Lud	Louth	15.4	EA-LN	029003	29	1968-01-01		C		20.0	25.9	true	true	false	true	false	true	true	true	true	true	true	true	true	G	1968-07-05	2023-09-30	0.454	0.07	1991-12-11	1991-12-11	5.64	2007-07-20	2007-07-20	0.127	0.244	0.355	0.883	1.1	0.9	20176	20176	100.0	1966-05-10		3.274	16.2	51.0	88.9	130.4	153.0	729	698	0.0579	0.7897	0.0986		0.0531	0.0401	0.8161	0.0943	0.0007	0.0488	1.0				0.0096		0.2971	0.29	0.82	0.958	59.9	14.11	35.4	42.6	10.6	13.54	7.7	91	69	0.24	16.4	55.72	0.184	0.852	0.0247	0.0256	0.026	0.304	0.0223	0.837	0.24	1965..1966		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located in an urban area but gauging a predominantly rural, Chalk catchment with some artificial influences.	Crump profile weir, 4.569m wide, at u/s end of long culvert (capacity limited to 20 cumecs - yet to be exceeded). Flows recorded 1966-1968 at sharp-crested weir at Bridge Street. Charted data started at Tathwell Nov 1968, and South Elkington Mar-Nov 1968.	Two ratings applied across period of record, the most recent is valid from January-1968 when theoretical rating applied. Theoretical rating supported by current metering, but gaugings needed to confirm at high flows.	Flood of 1920 estimated at approx. 140 cumecs. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Catchment is predominantly Chalk, with around one third covered with superficial deposits, mainly Boulder Clay. Largely rural catchment with mainly arable farming, although there is urban development (Louth) just upstream of station.	Groundwater abstraction has a modest impact on flows; mill regulation can also produce short-term artificial spikes. Work is underway to construct two retention ponds on the Lud.
29004	Ancholme at Bishopbridge	54.7	TF03219118	503210.0	391180.0	53°24'26.4710"N 0°26'56.0047"W	53.40735	-0.44889	Ancholme	Bishopbridge	3.8	EA-LN	029004	29	1968-01-01		CC		20.9	63.3	true	true	false	true	false	false	false	true	false	false	false	false	false	SRGI	1968-03-14	2023-09-30	0.539	0.0	1969-10-16	1972-09-30	14.5	1981-04-26	1981-04-26	0.033	0.208	0.389	1.08	1.48	0.51	20289	20287	99.99	1968-03-13		6.098	7.9	10.8	21.9	54.3	67.7	635	615	0.0124	0.8022	0.1579		0.0216	0.0109	0.8987	0.083	0.0001	0.0036	0.2116	0.3241	0.4643		0.0787	0.0095	0.2875	0.26	0.558	0.996	11.5	29.37	29.0	36.7	11.3	16.09	8.54	28	62	0.34	7.9	59.03	1.285	0.772	0.2478	0.0035			0.0043			1967..1968		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound structure, with major artificial influences.	Compound Crump profile weir, with central crest 2.448m wide and total width of 9.131m.	Structure drowns in high flows and is affected by weed growth in summer. Gauging at 0.73m (4.96 cumecs) is thought to be unreliable. Theoretical rating confirmed to 5.5 cumecs (0.6m). One rating applied across period of record.	POTs at this site had to be adjusted to account for datum correction. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Flat low-lying catchment. Geology: clay and Lincolnshire L'st, significant cover of superficial deposits - mainly Boulder Clay and confined to E half of catchment. Rural, predominantly arable land.	Regime influenced by gw abstraction/recharge. Flows are very heavily augmented in summer from Trent-Witham-Ancholme transfer scheme. Reservoir(s) in catchment affect runoff.
29005	Rase at Bishopbridge	66.6	TF03219118	503210.0	391180.0	53°24'26.4710"N 0°26'56.0047"W	53.40735	-0.44889	Rase	Bishopbridge	4.1	EA-LN	029005	29	1967-01-01		C		18.0	39.1	true	false	false	false	false	false	false	true	false	false	false	false	false	PGEI	1967-06-05	2023-09-30	0.56	0.0	1967-06-05	1967-06-05	17.6	2019-11-11	2019-11-11	0.067	0.155	0.266	1.09	1.78	0.51	20572	20563	99.956				7.9	15.1	34.8	120.4	160.8	655	641	0.1199	0.4984	0.3291		0.0463	0.1252	0.6213	0.217	0.0067	0.0288	0.206	0.2104	0.5836		0.3837	0.0528	0.2214	0.29	0.52	0.996	28.8	38.09	31.7	38.5	10.7	21.99	12.43	49	257	0.35	8.3	63.27	1.264	0.729	0.1926	0.0156	0.567	1.01	0.0166	0.751	0.929			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Structure gauging upper, more natural, parts of catchment.	Crump profile weir (crest length 3.658m). Removed from peak flows dataset in September 2020 (WINFAP Files v9).	Station drowns above about 9 cumecs, and relationship between u/s and d/s levels depends on weed growth and the disposition of sluices and gates at Harlam Weir 3.5km d/s. Data removed from peak flow dataset due to significant scatter in gaugings and two flood-storage reservoirs impacting flows above QMED. Theoretical calibration. One rating applied across period of record.	Missing daily flow for June 2019 event as stage exceeded rating.	Upper parts of the catchment elevated, highest point around 150mASL (Lincolnshire Wolds), but most of the catchment is flat and low lying. Predominantly clay, over half of the catchment is covered with superficial deposits of blown sand and Boulder Clay. Predominantly rural catchment, mixed arable and pasture.	Abstractions for PWS in the upper reaches has some effect on summer low flows. Some effluent returns. Missing data in recent years due to stage exceeding upper limit of the rating.
29009	Ancholme at Toft Newton	27.2	TF03218747	503210.0	387470.0	53°22'26.4637"N 0°27'00.3659"W	53.37402	-0.4501	Ancholme	Toft Newton	7.7	EA-LN	029009	29	1974-01-01		FV			74.8	true	true	false	true	false	false	true	true	false	true	false	false	true	GI	1974-03-07	2023-09-30	0.137	0.0	1974-04-30	2018-08-08	6.85	2007-06-25	2007-06-25	0.004	0.021	0.053	0.373	0.536	0.52	18105	17725	97.901	1974-03-07		1.735	9.2	13.8	26.0	58.6	67.7	640	616	0.0175	0.778	0.1828		0.0183	0.017	0.8915	0.085	0.0003	0.004	0.2759	0.3122	0.4119		0.0303		0.1992	0.26	0.626	0.998	12.3	25.61	28.4	36.4	11.5	11.03	5.38	32	72	0.5	9.2	29.31	0.944	0.726	0.204	0.005			0.0045					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir immediately u/s of entry point of flows from a reservoir.	Flat V weir (3.03m wide). The station is immediately u/s of entry point of flows from Toft Newton reservoir.	There is no drowning or bypassing. Theoretical calibration, confirmed by check gaugings. Rating expected to be modular up to bank full but gauging at 0.4m introduces some uncertainty. Theoretical rating applied across period of record.	POT has been corrected to zero stage - was previously offset by 1m. Site inoperative due to vandalism 10/04/2002-05/01/2003. Low flows in May 2003 are suspect. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Flat, low-lying catchment, with elevated upper part, developed on Lincolnshire L'st and clays, with some Boulder Clay cover in E half. Predominantly rural, mainly arable land.	No major abstractions or returns.
30001	Witham at Claypole Mill	297.9	SK84204796	484200.0	347960.0	53°01'20.3535"N 0°44'46.1842"W	53.02232	-0.74616	Witham	Claypole Mill	16.9	EA-LN	030001	30	1959-01-01		B		43.0	10.8	true	true	false	true	false	true	false	true	true	true	false	true	true	RPE	1959-05-01	2023-09-30	1.895	0.021	1976-07-24	1976-07-24	31.6	1977-02-11	1977-02-11	0.385	0.763	1.22	4.01	5.66	0.69	23529	23529	100.0	1959-01-27		16.313	17.3	31.8	91.3	134.9	157.0	632	615	0.0708	0.6046	0.2279	0.0008	0.0896	0.05	0.7144	0.1803	0.0026	0.0519	0.3848	0.0071	0.6081		0.0947		0.1402	0.27	0.592	0.975	30.4	28.49	31.7	41.1	10.9	53.33	27.75	86	28	0.14	17.3	295.67	0.789	0.805	0.1403	0.0187	0.626	0.876	0.0351	0.81	0.942	1958		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a predominantly rural catchment with mixed geology and substantial artificial influences.	An old three level weir, total width of 24.99m converted to a standard broad-crested Lea design.	No bypassing or drowning. Fairly insensitive but range and gauge quality good. Rated by current meter. Scatter in gaugings evident. One rating applied across period of record.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	The catchment is about half clay and half limestone, mainly clay d/s of Grantham. Some superficial deposits of Boulder Clay in headwaters and gravel terrace deposits in valleys. Some drainage from the Lincolnshire Limestone in the form of springs. Other springs have been found to emanate from gravel beds perched on the Lias Clays. Largely rural, although Grantham is within the catchment.	Substantial modification of low flows by transfer to Rutland Water and PWS at Saltersford; >50% of low flows may be abstracted representing between 10 and 30% of average flow. Some effluent returns.
30002	Barlings Eau at Langworth Bridge	210.1	TF066766	506600.0	376600.0	53°16'32.4362"N 0°24'10.1493"W	53.27568	-0.40282	Barlings Eau	Langworth Bridge	3.5	EA-LN	030902	30	1960-01-01		FVUS	22.5	5.0	29.6	true	false	false	false	false	false	false	true	false	false	false	false	false	GI	1960-10-01	2023-09-30	1.373	0.003	1964-09-21	1976-08-29	41.3	2007-06-26	2007-06-26	0.048	0.205	0.481	3.534	5.728	0.43	23010	22271	96.788				7.7	11.4	26.5	62.0	141.8	620	609	0.0343	0.7016	0.2032		0.0568	0.034	0.8138	0.117	0.0004	0.0343	0.2199	0.3148	0.4653		0.068		0.6067	0.28	0.534	0.982	15.0	30.1	30.1	37.4	11.2	21.78	11.15	33	147	0.1	8.3	207.87	1.373	0.797	0.2421	0.0147	0.603	0.867	0.018	0.815	0.847			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Several gauging structures have been used at this site, gauging a rural catchment with mixed geology and some artificial influences.	Ultrasonic gauge, commissioned 09/03/1999. Originally a natural section until Nov 1965, replaced by a low flow compound Crump profile weir, which ceased operating in Sept 1978 and was replaced by a flat V weir in June 1980.	Cableway in early 1970s used for gauging the station rating. The structure operating since June 1980 has the theoretical rating confirmed by check gaugings. Structure drowns at about 19 cumecs.		Flat catchment. Mixed geology, with significant superficial deposits, predominantly Boulder Clay. Predominantly rural but with some new urban development.	Runoff influenced by gw abstraction/recharge. Runoff reduced by industrial/agricultural abstraction. Irrigation abstractions reduce summer low flows.
30003	Bain at Fulsby Lock	197.1	TF24086097	524080.0	360970.0	53°07'53.2463"N 0°08'48.7915"W	53.13146	-0.14689	Bain	Fulsby Lock	10.1	EA-LN	030003	30	1962-01-01		B	42.0	46.1	24.2	true	true	true	true	false	false	false	true	false	false	false	false	false	SPI	1962-10-01	2023-09-30	1.287	0.002	1976-06-29	1976-07-14	47.2	1981-04-26	1981-04-26	0.123	0.362	0.705	2.99	4.24	0.59	22280	22273	99.969	1960-09-21		16.298	9.5	33.1	79.7	125.0	153.4	704	667	0.0414	0.7738	0.1537	0.0001	0.0289	0.0353	0.7992	0.1486	0.0011	0.0134	0.4948		0.5052		0.0702		0.6222	0.29	0.756	0.963	39.3	21.91	32.6	39.8	11.1	42.03	21.55	80	209	0.2	10.0	199.49	0.622	0.784	0.0809	0.012	0.534	0.742	0.0088	0.71	0.644			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a rural catchment with mixed geology located in the Lincolnshire Wolds, with modest artificial influences.	Broad-crested weir 4.6m wide situated in old lock; rated by model tests. Small bypass channel u/s feeds original river course and a disused model flume (wall ht=1.136m), gauged by sharp-crested weir.	Rating derived from model tests. One rating applied across period of record.	Flows over bypass not processed since 1981 and subsequent low flows therefore underestimated however peak flows will not be significantly affected. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Catchment is mainly Chalk and clay, with sandstone in the headwaters, largely overlain by superficial deposits (predominantly Boulder Clay, with alluvium and sands and gravels along valley bottom). Rural catchment, predominantly arable land.	Revesby Reservoir has a very minor influence, and abstractions for irrigation may be significant in summer months.
30004	Lymn at Partney Mill	61.6	TF40176759	540170.0	367590.0	53°11'12.9862"N 0°05'46.8015"E	53.18694	0.09633	Lymn	Partney Mill	14.9	EA-LN	030004	30	1962-01-01		C			23.7	true	true	true	true	false	false	true	true	false	true	false	false	true	PI	1962-05-04	2023-09-30	0.504	0.046	1994-08-30	1994-08-30	11.75	1981-04-26	1981-04-26	0.153	0.254	0.347	0.948	1.347	0.65	22430	22395	99.844	1962-05-04		7.128	13.7	33.3	60.8	104.8	145.6	696	686	0.0938	0.7277	0.1483		0.0285	0.0597	0.7224	0.2103	0.0021	0.0048	0.6852		0.3148		0.0325		0.1122	0.29	0.568	0.979	53.3	32.47	34.0	41.3	11.3	17.34	9.35	65	92	0.27	13.7	60.09	0.465	0.954	0.0605	0.0109	0.387	0.869	0.0059	0.644	0.973			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a rural catchment with mixed geology located in Lincolnshire Wolds, with minor artificial influences.	Crump weir with 5m crest.	The weir is probably non-modular at very high flows due to backing up behind struts and a bridge, but is bypassed just before this point. Rated by model tests and confirmed by check gaugings to highest gauging of 0.6m. One rating applied across period of record.	Station was bypassed in Oct 1993. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Catchment with mixed permeability bedrock geology and some superficial deposits. Wholly rural, predominantly arable land use.	Abstraction for irrigation in upper reaches and some abstraction for PWS may have effect on low flows in summer.
30005	Witham at Saltersford Total	126.1	SK927335	492700.0	333500.0	52°53'27.4954"N 0°37'25.0004"W	52.89097	-0.62361	Witham	Saltersford Total	57.7	EA-LN	030029	30	1973-01-01		CB			17.0	true	true	false	true	false	false	false	true	false	false	false	false	false	RPGI	1968-04-01	2023-09-30	0.797	0.038	1976-08-16	1976-08-16	10.23	1980-08-15	1980-08-15	0.158	0.328	0.543	1.69	2.3	0.78	20271	20229	99.793			6.829	56.6	97.4	121.9	141.7	157.0	652	646	0.1064	0.605	0.2216	0.0019	0.0593	0.0588	0.7393	0.1835	0.0032	0.0145	0.8409	0.0171	0.1421		0.0086		0.2649	0.27	0.76	0.973	31.0	16.58	32.7	42.2	11.6	26.17	13.42	120	81	0.23	56.6	123.46	0.485	1.204	0.0925	0.0035			0.0137	0.66	1.224	1967..1972	1967-10-01..1973-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound structure gauging a rural catchment u/s of Grantham, mixed geology and significant artificial influences.	Compound weir with round-crested low flow weir, 1.83m wide, and broad-crested high flow portion, 8.25m wide. The Measuring Authority recorded these structures separately until 1985.	Discharge computed from a single stage recorder to 1973, when it was discovered that a trout screen diverted flow over high flow weir. Second recorder installed, which was removed in Feb 1985 when trout screen was removed. One rating applied across period of record.	Data prior to 1973 should not be used; data from 1973 to 1985 calculated from addition of high & low flow weir. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Flat catchment, underlain by l'st and clay with about quarter of the area covered with Boulder Clay on E margin and in S. Predominantly rural.	Runoff influenced by groundwater abstraction/recharge. Major abstractions for PWS immediately u/s, with significant effect on low flows.
30006	Slea at Leasingham Mill	48.4	TF08804843	508800.0	348430.0	53°01'19.6104"N 0°22'45.8378"W	53.02211	-0.3794	Slea	Leasingham Mill	12.3	EA-LN	030006	30	1974-01-01		TP		2.1		true	true	true	true	false	false	false	true	false	false	false	false	false	PGI	1974-02-13	2023-09-30	0.558	0.0	1974-08-03	2022-10-14	5.15	1977-03-01	1977-03-01	0.0	0.079	0.301	1.47	1.98	0.91	18127	17839	98.411	1974-03-13		1.758	9.0	19.4	52.6	102.1	127.6	629	601	0.0335	0.5201	0.3494		0.088	0.0383	0.6933	0.2108	0.0031	0.0526	0.6301	0.2908	0.0791		0.2208		0.0351	0.23	0.809	0.964	27.9	18.51	31.7	41.7	11.3	24.88	14.35	58	83	0.32	9.0	51.53	0.566	0.839	0.1063	0.0275	0.676	0.567	0.0393	0.752	0.628	1973..1983	1974-03-13..1984-09-02	gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular thin plate weir gauging a predominantly rural catchment with gw-dominated regime and very low or zero summer/autumn flows. Significant artificial influences.	Rectangular thin-plate weir 1.372m wide set in old gate site, modified in 1984.	Weir does not drown - modular limit pre weir 3 cumecs and post weir 12 cumecs. Theoretical rating, with section above thin-plate treated as broad-crested weir. Gaugings taken at footbridge in Sleaford (below Carre Lane). Two peak flow ratings applied across period of record, pre- and post- modification of the weir, with post-1984 rating accounting for bypass flow.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Predominantly l'st with some superficial deposits including river terrace deposits (sand and gravel) in valley. Rural catchment, mixed agriculture, some urban development in lower catchment u/s of station.	Unresponsive, gw-dominated catchment with intermittent flow regime. Runoff influenced by groundwater abstraction/recharge, including abstraction for industry, and agriculture. Groundwater abstraction has potential for reducing summer low flows. Limestone spring flow rises and falls rapidly depending on groundwater level.
30011	Bain at Goulceby Bridge	62.5	TF24597943	524590.0	379430.0	53°17'49.8643"N 0°07'55.4404"W	53.29718	-0.13207	Bain	Goulceby Bridge	52.2	EA-LN	030011	30	1971-01-01		C VA		30.0	31.6	true	true	false	true	false	false	false	true	false	true	false	false	true	SGI	1971-08-01	2023-09-30	0.348	0.024	1991-08-22	1991-09-04	9.59	2019-06-11	2019-06-11	0.075	0.152	0.233	0.725	0.955	0.74	19054	19021	99.827	1966-06-17		2.518	52.9	76.1	113.6	133.5	153.3	744	695	0.0507	0.7665	0.1613	0.0001	0.0183	0.0586	0.7969	0.1396	0.0012	0.0019	0.9393		0.0607		0.0917		0.4406	0.29	0.841	0.95	44.7	16.18	33.3	41.1	10.7	18.45	10.51	108	149	0.11	52.9	64.55	0.308	1.02	0.0522	0.0048			0.0018			1965		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a rural catchment with mixed geology, located in the Lincolnshire Wolds.	Free-fall drop under bridge calibrated by c/m until Dec 1969 and standard full-range Crump profile weir (crest length 4.877m) since Aug 1971 (no records between).	Three ratings applied across period of record, the first pre-weir, the second valid from 1971 when Crump installed, the third from 1979 following rating review.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Catchment on the scarp slope of the Lincolnshire Wolds. Underlain by Chalk and s'st with more than half of the catchment covered with superficial deposits, mainly Boulder Clay and some sands and gravels. Rural catchment, predominantly arable farming.	Regime influenced by gw abstraction/recharge. Abstraction for irrigation could have significant effect on low flows in dry summers. Reservoir(s) in catchment affect runoff.
30012	Stainfield Beck at Cream Poke Farm	37.4	TF12667393	512660.0	373930.0	53°15'01.5690"N 0°18'46.5343"W	53.25044	-0.31293	Stainfield Beck	Cream Poke Farm	7.7	EA-LN	030012	30	1970-01-01		CC		9.2	63.6	true	false	false	false	false	false	true	true	false	true	false	false	true	N	1970-12-01	2023-09-30	0.27	0.0	1991-08-26	1991-09-06	13.0	2007-06-25	2007-06-25	0.012	0.052	0.119	0.627	0.956	0.45	19297	18599	96.383				9.2	21.5	53.3	103.4	135.3	660	631	0.0385	0.7018	0.2266		0.0309	0.0516	0.8066	0.1316	0.0009	0.008	0.1715	0.226	0.6025		0.158		0.6377	0.29	0.522	0.999	29.0	34.3	31.6	38.3	10.9	17.34	10.63	59	225	0.35	9.2	38.22	0.773	0.786	0.11	0.014	0.493	0.89	0.0073	0.685	0.618			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a predominantly rural catchment with upper part located in the Lincolnshire Wolds, minimal artificial influences.	Before 1998, compound Crump profile weir with (non-processed) crest tapping which became non-modular above about 2 cumec (stage 0.42m) leading to uncertainty in high flows. Central weir 1.225m wide, total width 5.791m. Divide piers lowered in 1986 to stop debris entrapment. Replaced by 8m wide Flat V with crest tapping.	Use mainframe rating up to maximum rating limit, no out of bank rating available.	Missing data from 12/1997-10/1998 due to construction of new weir during this period. Peak flow on 25/04/1981-26/04/1981 not available as station non-modular, stage peaked at 1.61m.	Upper part of the catchment located in Lincolnshire Wolds but lower part near the station is flat and low lying. Underlain by Kimmeridge Clay. Extensive superficial deposits, mainly Boulder Clay, blown sand and alluvium. Rural, mixed farming with minor urban development along river valley u/s of station.	No major abstractions or returns.
30013	Heighington Beck at Heighington	21.2	TF04046951	504040.0	369510.0	53°12'44.9192"N 0°26'36.6300"W	53.21248	-0.44351	Heighington Beck	Heighington	11.0	EA-LN	030013	30	1976-01-01		C		8.8	61.1	true	true	true	true	false	false	false	true	false	true	false	false	true	GI	1976-03-16	2023-09-30	0.13	0.003	1976-07-07	1976-08-26	3.98	2007-06-27	2007-06-27	0.028	0.058	0.086	0.269	0.369	0.75	17365	16992	97.852	1976-03-15		0.643	8.0	25.4	54.0	71.5	77.2	609	605	0.0117	0.6331	0.1907		0.1624	0.0205	0.7118	0.1074	0.0005	0.1584	0.9573	0.0427			0.0122		0.0076	0.26	0.947	0.962	19.0	5.68	32.4	40.5	11.9	11.51	6.2	52	69	0.54	8.2	23.88	0.494	1.107	0.1187	0.0682	0.714	1.106	0.0794	0.845	1.084			gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a slow responding limestone catchment with significant artificial influences during summer.	Crump profile weir 3.51m wide.	Theoretical calibration but drowning expected at high flows. One rating applied across period of record.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Permeable geology - almost entirely limestone, with minimal superficial deposits. Predominantly rural, mixed farming but with some urban development.	Very slow responding. Summer low flows may be heavily influenced by gw abstraction for irrigation.
30014	Pointon Lode at Pointon	11.9	TF1279231246	512792.0	331246.0	52°52'00.7805"N 0°19'33.1809"W	52.86688	-0.32588	Pointon Lode	Pointon	2.7	EA-LN	030014	30	1972-01-01		C		5.7		true	true	false	true	false	false	false	true	false	false	false	false	false	I	1972-05-01	2023-09-30	0.07	0.0	1972-06-01	2022-10-18	9.0	1990-07-29	1990-07-29	0.001	0.012	0.032	0.153	0.248	0.49	18780	18780	100.0	1972-05-02		2.663	7.6	18.1	44.7	67.2	80.6	624	591	0.2274	0.5721	0.1316		0.0689	0.1237	0.7554	0.1169		0.004		0.1902	0.8098		0.0506		0.7151	0.22	0.338	1.0	29.0	42.1	31.5	40.5	11.8	10.67	5.99	43	84	0.36	7.7	10.93	0.729	0.641	0.1033	0.0078	0.431	0.606	0.0141	0.682	0.676			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a rural, limestone catchment with minor artificial influences.	British Standard Crump profile weir 2.445m wide, 2.667mAOD, at centre section. Raised walls at Crump weir sides, level 3.426mAOD, with flat concrete surface between each wall and channel bank 1.53m wide.	When upstream level higher than Crump walls, whole structure acts as non-standard compound weir. Known to drown at high flows. No high flow gaugings are available and so higher flows should be treated with caution. Theoretical calibration. One rating applied across period of record.	GDF POR maximum listed as 5.69 cumecs in Jan 1998. Maximum peak flow of 12.9 cumecs registered in Jul 2001. This was undoubtedly a large event caused by >80mm rainfall, but considerable uncertainty surrounds the magnitude owing to extrapolation. Unusual pattern of flows in Apr 2007 thought to be due to accretion and weir cleaning. Some anomalous recessions in e.g. 1994, 1998, 1999, the reason for which is unknown. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Drainage channel in low lying area draining highland limestone, largely covered with Boulder Clay. Rural catchment with mixed farming and, mainly in upper catchment, significant woodland. Catchment area is 11.05 sq km in 1972 ref, 11.9 sq km in NRFA.	Abstractions for irrigation have minor effect on summer low flows (e.g. August 2017).
30015	Cringle Brook at Stoke Rochford	50.5	SK92462968	492460.0	329680.0	52°51'24.0578"N 0°37'41.7388"W	52.85668	-0.62826	Cringle Brook	Stoke Rochford	76.0	EA-LN	030015	30	1976-01-01		TP		6.3	20.8	true	false	false	false	false	false	true	true	false	true	false	false	true	N	1976-05-01	2023-09-30	0.28	0.004	1990-10-30	1990-10-30	2.48	2001-07-18	2001-07-18	0.061	0.128	0.211	0.577	0.724	0.89	17319	17317	99.988				70.6	107.4	131.5	148.1	157.0	656	656	0.0864	0.6302	0.2547		0.0256	0.0841	0.7239	0.1893	0.0001	0.0017	0.8908		0.1092				0.1088	0.27	0.847	0.931	32.9	11.78	33.0	42.3	11.4	14.54	7.71	129	84	0.33	70.6	41.27	0.367	1.142	0.0855	0.0008			0.0035					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Structure in a tunnel under A1 gauging a rural, near-natural catchment with mixed geology. Removed from Peak Flows Dataset in September 2022 (WINFAP Files v11).	Sharp-crested weir 2.74m wide in tunnel under A1.	Weir drowns above about 0.25 cumecs, but flows depend on position of weirs and sluices immediately d/s. Rating includes an allowance for drowning using assumed positions of d/s weirs and sluices. Two ratings accross period of record.	Exceptionally low flows in Oct 1990 suspect.	Catchment underlain by Oolitic L'st and Lias Clay. Rural, land use is mixed farming.	No artificial influences. Natural to within 10% at the Q95. Major supply abstraction point d/s of station. Major supply abstraction point d/s of station.
30017	Witham at Colsterworth	51.3	SK92882460	492880.0	324600.0	52°48'39.4470"N 0°37'24.4885"W	52.81096	-0.62347	Witham	Colsterworth	87.0	EA-LN	030017	30	1978-01-01		FV		9.4	29.0	true	false	false	false	false	false	false	true	false	false	false	false	false	R	1978-10-03	2023-09-30	0.219	0.002	1994-08-02	1994-08-29	6.5	1980-08-15	1980-08-15	0.019	0.05	0.099	0.512	0.808	0.5	16434	16434	100.0				85.2	107.9	122.5	139.2	157.0	649	641	0.0869	0.6243	0.2053	0.0014	0.0726	0.0292	0.7426	0.1906	0.0073	0.0298	0.815		0.185				0.4517	0.27	0.656	0.993	22.3	22.63	32.4	42.5	12.1	14.34	7.41	123	79	0.28	85.3	50.09	0.675	1.167	0.1239	0.0063	0.415	0.764	0.0261	0.704	1.001			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a rural catchment underlain by limestone, heavy artificial augmentation of flows until 1985.	Flat V weir 4.996m wide. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Theoretical calibration.	Low flows in summer 1994 are suspect.	Rural catchment underlain by l'st and with some Boulder Clay cover.	Summer flows very heavily augmented by transfers from Rutland Water until Jun 1985, when direct Rutland/Saltersford pipeline opened.
30018	Honington Beck at Honington	22.3	SK93554337	493550.0	343370.0	52°58'46.2786"N 0°36'29.2990"W	52.97952	-0.60814	Honington Beck	Honington	38.8	EA-LN	030018	30	1983-01-01		FV				true	false	false	false	false	false	false	false	false	false	false	false	false	EI	1983-10-13	2023-09-30	0.139	0.001	1989-06-24	1989-07-24	3.13	2007-06-25	2007-06-25	0.025	0.053	0.08	0.285	0.425	0.68	14598	13559	92.883				37.4	43.9	57.4	96.4	116.9	625	597	0.0131	0.6783	0.2661		0.0392	0.0148	0.7578	0.2018	0.0036	0.0215	0.112		0.888		0.1012		0.1427	0.27	0.58	0.973	34.4	29.84	30.7	41.9	10.6	9.46	4.73	63	190	0.04	37.4	20.4	0.599	0.776	0.1154	0.0119	0.399	0.962	0.0131	0.807	1.484			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauge on the Honington Beck, a tributary of the Witham. Suitable for low flows only.		Station suffers from siltation.	Data from 1984-present. Missing data June 1992-Dec 1995.	Small rural catchment draining into the River Witham.
30033	Brant at Brant Broughton	65.8	SK92905457	492900.0	354570.0	53°04'49.0205"N 0°36'52.5418"W	53.08028	-0.61459	Brant	Brant Broughton	10.0	EA-LN	030033	30	1990-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	GI	1990-09-07	2023-09-30	0.256	0.0	1995-08-09	2004-12-08	19.4	2020-02-16	2020-02-16	0.007	0.033	0.07	0.55	0.958	0.35	12077	12025	99.569				9.5	14.7	24.2	64.5	104.8	606	574	0.026	0.7501	0.164		0.0511	0.0262	0.8392	0.1277	0.0003	0.0064	0.0229		0.9771		0.2227		0.0125	0.27	0.369	0.995	18.4	45.2	30.9	40.7	10.4	16.33	8.54	32	340	0.32	9.5	65.69	1.418	0.824	0.2804	0.0045			0.0071	0.636	0.747			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir gauge on the Brant.	Crump profile Flat V (1:10) weir, 6m wide, set in vertical wingwalls 1.5m high. U/s and sidewall tappings for non-modular flow estimation (not used). Channel u/s formed by training banks circa 1m higher than walls.		1991-present. Patchy record 1994-1995.	Low relief catchment to W of Lincoln Edge. Geology: Lower Lias clays and subordinant l'sts with some Middle Lias on eastern watershed. Over 20% cover by broad band of river terrace sands and gravels, which forms much of western catchment. Rural catchment, with predominantly arable land use.
31001	Eye Brook at Eye Brook Reservoir	60.1	SP853941	485300.0	294100.0	52°32'17.1232"N 0°44'37.6159"W	52.53809	-0.74378	Eye Brook	Eye Brook Reservoir	54.6	CDWC		31	1939-01-01	1999-10-01	C				true	false	false	false	false	false	false	false	false	false	false	false	false	SR	1937-10-01	1999-10-25	0.231	0.0	1940-01-20	1956-10-30	18.4	1975-03-09	1975-03-09	0.035	0.037	0.042	0.605	1.052	0.41	22670	17706	78.103				59.0	87.9	139.2	186.4	221.9	658	657	0.1698	0.4411	0.3356		0.0281	0.088	0.5654	0.309	0.0029	0.007	0.0631		0.9369		0.0265		0.2463	0.3	0.324	0.837	71.3	48.14	30.7	40.7	12.5	22.37	11.77	138	139	0.17	59.0	58.9	0.224	1.006	0.0238	0.0011			0.0035					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauge on the Eye Brook, d/s of reservoir supplying Corby Steelworks.	Crump weir with 10.89m crest replaced broad-crested weir with central rectangular notch in 1957. Small Crump weir for compensation flows. Originally operated by Corby and District Water Co. Immediately d/s of reservoir built to supply water to Corby Steelworks.		1938-1999. Very patchy. Records also kept of reservoir levels.	Mostly clay with some sand and gravel. Catchment is largely rural. Surface area of reservoir constitutes about 3% of catchment.	Water from reservoir lost to catchment but licensed abstractions have been halved since 1980.
31002	Glen at Kates Br & King St Br	341.9	TF10621487	510620.0	314870.0	52°43'12.6564"N 0°21'49.1992"W	52.72018	-0.36367	Glen	Kates Br & King St Br	6.1	EA-LN	031802	31	1960-01-01		FVUS+FL			68.0	true	true	false	false	true	false	false	false	false	true	false	false	true	GI	1960-10-01	2023-09-30	1.135	0.0	1976-07-02	1976-08-29	23.65	1981-04-27	1981-04-27	0.039	0.19	0.481	2.812	4.399	0.59	23010	22544	97.975	1959-01-01		16.534	8.2	24.2	73.2	110.9	134.5	618	608	0.1345	0.6519	0.1652	0.0008	0.0445	0.0844	0.7692	0.1348	0.0025	0.0085	0.3485	0.4797	0.1718		0.0565		0.3791	0.22	0.595	0.99	30.5	26.96	31.7	40.7	11.6	52.96	23.88	63	107	0.26	8.7	337.9	0.87	0.792	0.132	0.0063	0.006	0.881	0.0081	0.611	0.867	1958		gdf;gmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound structures gauging the total flow of the river Glen from a rural catchment with mixed geology and significant artificial influences.	Compound structure site. Kates Bridge was originally a broad-crested weir, replaced in Nov 1971 by Flat V weir, 9.7m wide, Ultrasonic gauge for high flows installed in 1999. Combined with standing-wave flume at King Street. Ultrasonic measurement closed in February 2013.	All recorded flows within modular limits. During flood periods, some flow is diverted from the Glen down the Greatford Cut, which is measured at King Street. The diversion is about 4 km upstream from Kates Bridge on the Glen.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Mixed geology of clay and limestone in headwaters. Significant superficial deposits, mainly Boulder Clay. Rural catchment, mixed agricultural land use with some woodland. Glen becomes a Fenland river below the gauging stations, and is a losing stream in its upper reaches. Digital catchment created from separate DTM-derived catchments for compound structure sites.	The Glen is influent in upper reaches. Low flows reduced by irrigation abstractions, influenced by pumping from gravel works and groundwater abstraction outside the catchment. Flows also affected by Gwash-Glen transfer scheme since 1989.
31004	Welland at Tallington Total	717.4	TF09590772	509590.0	307720.0	52°39'22.1094"N 0°22'52.6339"W	52.65614	-0.38129	Welland	Tallington Total	13.3	EA-LN	031804	31	1967-01-01		CB+2C				true	true	true	true	false	false	false	true	false	false	true	false	false	SPEI	1967-10-17	2023-09-30	4.026	0.441	1972-10-28	1972-10-28	77.6	1998-04-11	1998-04-11	0.894	1.54	2.17	9.09	13.9	0.55	20438	19470	95.264	1968-01-01		34.799	12.5	56.9	102.6	154.4	229.3	638	632	0.1154	0.4721	0.3445	0.0001	0.0476	0.0559	0.5524	0.3265	0.006	0.0379	0.2111	0.0713	0.7176		0.0289		0.2976	0.29	0.476	0.925	47.7	37.93	31.1	40.0	12.0	80.15	44.77	104	99	0.17	12.5	708.0	0.752	0.967	0.0867	0.0119	0.634	0.756	0.0182	0.79	0.855			gdf;gmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound site of three parts, gauging a predominantly rural catchment with mixed geology, with significant artificial influences including the Rutland water reservoir, record post 1994 are for indicative purposes only.	Compound site. Flows measured over broad-crested weir (total width 28.35m) on main River Welland/Maxey Cutand, two Crump profile weirs (both with 6.1m crest length) on West Deeping, plus flow into Tallington stream and Lolham Mill stream. Total flow is sum of three records - Lolham, West Deeping, and Tallington.	Weir at Lolham drowns in summer due to weeds, and true flows estimated. New improved theoretical rating developed to account for new Larinier fish pass channel (0.6m wide) installed in December 2014.	Post-1994 flow record contains many gaps and anomalous sequences and should be used for indicative purposes only, particularly at low flows. 10 days missing in March-April 2018 due to new huts at Lolham and West Deeping. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Site is at a place where river becomes Fenland river. Largely clay, with some Boulder Clay cover. Rural catchment, mixed farming, some urban development u/s of station.	About 11% of the catchment area drains into Rutland Water construction on Gwash (drinking water reservoir) opened in 1976. Significant quantities of water also abstracted u/s for transmission to Rutland Water with significant effect on low flows. Abstraction in catchment also for PWS, industry and agriculture. Runoff increased by effluent returns.
31005	Welland at Tixover	417.0	SP97019962	497010.0	299620.0	52°35'08.6671"N 0°34'10.4666"W	52.58574	-0.56957	Welland	Tixover	30.0	EA-LN	031005	31	1963-01-01		VA				false	true	true	true	false	false	false	false	false	false	false	false	false	SEI																			1960-01-01		37.24	31.8	64.8	109.7	157.3	221.9	644	636	0.1081	0.4593	0.3927		0.0333	0.0388	0.5505	0.3721	0.0015	0.0312	0.049	0.0357	0.9153		0.0455		0.3381	0.3	0.377	0.971	50.9	45.06	31.7	40.4	12.1	58.21	34.81	111	98	0.11	31.8	419.62	0.831	0.901	0.098	0.0081	0.594	1.058	0.0131	0.767	1.12			cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station measuring peak flows from a rural catchment with mixed geology and some artificial influences.	Rated VA station with cableway. A Crump weir at Barrowden upstream measures the low flow range up to 4.3 cumecs, with Tixover used above this.	Sluices at Doddington downstream affect flow below 11.33 cumecs, but are always open during high floods. Channel works as part of the Stamford to Market Harborough improvement scheme in 1971 affected the rating at Tixover - hence new rating from 01/10/1971. Two ratings applied across period of record, the most recent is valid from 01/10/1971 after channel works were conducted. Both ratings assume gates fully open at Doddington.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Geology mixed, predominantly very low permeability, mostly covered with Boulder Clay. Land use mainly rural.	Abstraction upstream at Eye Brook Reservoir.
31006	Gwash at Belmesthorpe	150.0	TF03770972	503770.0	309720.0	52°40'30.9287"N 0°27'59.9942"W	52.67526	-0.46667	Gwash	Belmesthorpe	24.0	EA-LN	031006	31	1967-01-01		C		24.0	23.0	true	false	false	false	false	false	false	true	false	false	false	false	false	SRP	1967-04-01	2023-09-30	0.695	0.15	1967-10-04	1976-09-06	11.4	1969-05-06	1969-05-06	0.274	0.389	0.525	1.32	1.65	0.85	20637	20568	99.666				24.0	61.5	100.9	147.4	212.0	639	630	0.1034	0.4821	0.2676	0.0001	0.0707	0.0703	0.5422	0.2547	0.0118	0.0398	0.5191	0.0468	0.4342				0.28	0.28	0.666	0.979	36.6	23.98	30.2	39.5	11.8	38.81	22.57	103	100	0.33	24.1	149.17	0.462	0.917	0.0683	0.0108	0.531	0.868	0.0232	0.792	1.073			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a predominantly rural catchment with flow largely affected by the Rutland Water reservoir that began filling in 1975. Removed from Peak Flow Dataset in September 2022 (WINFAP Files v11).	Crump profile weir (crest length 8.5m).	No drowning problems, designed to be modular throughout range. Has been suggested that flow estimates are less reliable above 0.4m stage, but no gaugings to confirm either way. Theoretical Crump formula rating used for the whole POR.	The presented POT data include only the pre-reservoir period.	Clay and l'st, Boulder Clay covers about a third of the catchment. Predominantly rural catchment with mixed farming, but dominated by reservoir. Pre-reservoir FARL is 0.979 and should be used with the pre-reservoir part of the records. Post-reservoir FARL is 0.757.	Station is 13 km downstream of Rutland Water, which began filling in February 1975. Flows since 1975 are dominated by this reservoir. Flows also affected by Gwash-Glen transfer scheme, and PWS abstraction. Station is also downstream of Ryhall pumping station.
31007	Welland at Barrowden	411.6	SP94829991	494820.0	299910.0	52°35'19.4388"N 0°36'06.4970"W	52.58873	-0.6018	Welland	Barrowden	34.9	EA-LN	031007	31	1968-02-01		C			13.5	true	false	false	false	false	false	false	false	false	false	false	false	false	SEI	1968-02-01	2023-09-30	1.864	0.028	1972-08-19	1972-08-19	70.55	1975-03-10	1975-03-10	0.232	0.466	0.846	4.21	5.563	0.5	20331	17578	86.459				35.0	66.0	110.3	157.6	221.9	644	637	0.1064	0.4571	0.3964		0.0335	0.0381	0.548	0.3755	0.0015	0.0312	0.0472	0.0261	0.9267		0.0462		0.3384	0.3	0.372	0.97	50.9	45.39	31.7	40.4	12.1	53.99	31.03	111	98	0.11	35.1	413.6	0.822	0.887	0.0981	0.0081	0.598	1.06	0.0131	0.769	1.128			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauge on the Welland. High flows bypass weir.	Crump weir 3.04m wide measures flows to 4.2 cumecs. Flow record from 1996 subject to truncation when flows exceed this limit. High flows measured at Tixover (31005).	Higher flows bypass weir via syphon and are measured d/s at Tixover (31005). Tixover is a rated section about 18m wide with rating depending on position of d/s sluices: assumed open in floods. Very high Tixover flows possibly influenced by overbank spillage u/s.	Period-of-record maximum flow of 107.8 cumecs recorded in March 1975, but the flood record is not homogeneous owing to changes post-1997. Missing data in 2017 due to fish pass construction.	Geology is mostly l'st overlain by 30% Boulder Clay and alluvium. Rural catchment with mixed farming.	Eye brook reservoir has little influence, but low flows reduced by abstractions.
31008	East Glen at Manthorpe	136.2	TF06791598	506790.0	315980.0	52°43'51.3322"N 0°25'11.9520"W	52.73093	-0.41999	East Glen	Manthorpe	15.6	EA-LN	031008	31	1970-01-01		FV	20.0			true	false	false	false	false	false	false	true	false	false	false	false	false	G	1968-10-17	2023-09-30	0.282	0.0	1970-06-21	2023-09-30	22.72	1977-02-25	1977-02-25	0.0	0.003	0.037	0.739	1.39	0.28	20072	19001	94.664				16.9	42.2	71.1	105.4	131.6	625	607	0.1348	0.6556	0.1701	0.0005	0.0342	0.0792	0.7648	0.1503	0.0008	0.0037	0.2614	0.5472	0.1915		0.0214		0.3732	0.22	0.592	0.983	27.2	26.9	31.8	40.8	11.7	44.32	21.35	72	106	0.25	16.9	131.74	0.585	1.081	0.0955	0.0064	0.405	0.977	0.0069	0.583	0.962			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauge on the East Glen. High and low flows are unreliable.	Flat V weir replaced simple Crump profile weir in Mar 1973. Low flows only.	Low flows often below lower limit of rating curve. Many high flows are truncated or missing, which means the mean runoff is unrepresentative.	Large amounts of missing data. Missing daily flow for June 2019 event as stage exceeded rating.	Predominantly agricultural catchment east of Grantham.	Missing data in recent years due to stage exceeding upper limit of the rating.
31009	West Glen at Shillingthorpe	173.0	TF07351122	507350.0	311220.0	52°41'16.9468"N 0°24'47.6988"W	52.68804	-0.41325	West Glen	Shillingthorpe	13.8	EA-LN	031009	31	1968-01-01		C		3.0		true	false	false	false	false	false	false	true	false	false	false	false	false	G	1970-10-01	2023-09-30	0.375	0.0	1976-06-07	1991-01-01	7.78	1998-04-10	1998-04-10	0.037	0.098	0.177	0.988	1.45	0.64	19358	18854	97.396				14.5	42.6	84.9	114.1	134.5	621	616	0.1587	0.6178	0.1687	0.0013	0.049	0.1001	0.7613	0.1264	0.0036	0.0082	0.5119	0.4484	0.0397		0.0048		0.4467	0.23	0.582	0.991	35.8	27.27	32.1	41.3	11.7	40.01	20.46	82	99	0.28	14.5	162.77	0.434	0.939	0.0671	0.0052	0.432	0.877	0.0083	0.613	0.859			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Simple Crump profile weir and multipath US gauge on the West Glen. Issues with truncation of high flows.	Simple Crump profile weir, crest 1.83m broad. Rated up to 0.49m (3.0 cumecs - flows truncated, hence not a full range station). Multi-path, cross configuration ultrasonic gauge installed to measure high flows from 2000, although truncation problem persists in recent flow record.	Truncated and missing flows make for an unrepresentative annual runoff.	Data from 1971-present. Missing data for 1992-1994.	Predominantly agricultural catchment draining area east of the A1 between Grantham and Stamford.	Flow regime affected by the Gwash-Glen transfer scheme. Missing data in recent years due to stage exceeding upper limit of the rating.
31010	Chater at Fosters Bridge	68.9	SK96070302	496070.0	303020.0	52°36'59.2684"N 0°34'56.8477"W	52.61646	-0.58246	Chater	Fosters Bridge	38.4	EA-LN	031010	31	1968-01-01		CC		19.2		true	true	false	true	false	false	false	true	true	true	false	false	true	N	1968-01-03	2023-09-30	0.518	0.019	1976-07-07	1976-08-22	12.7	1998-04-10	1998-04-10	0.075	0.167	0.266	1.15	1.74	0.53	20360	20360	100.0	1968-01-01		10.04	38.8	70.1	107.5	164.1	229.3	640	640	0.1395	0.5109	0.3168		0.0307	0.0505	0.5902	0.3297	0.0036	0.0254	0.2821	0.0064	0.7115				0.2034	0.3	0.529	0.998	61.5	33.1	30.6	39.6	12.2	25.06	11.49	113	107	0.17	38.8	68.81	0.293	0.807	0.0317	0.0041			0.005					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump gauging a rural, near-natural catchment with minimal artificial influences and with mixed geology.	Compound Crump profile weir. Central weir 1.054m wide, total width 6.077m.	Not drowned but possibly bypassed in very extreme floods. Theoretical rating applied across period of record.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Geology mixed, predominantly clay but contains also limestone and sandstone. Some Boulder Clay cover. Rural catchment with mixed farming, some woodland in lower catchment.	No major abstractions or returns - natural to within 10% at Q95.
31011	West Glen at Burton Coggles	31.6	SK98672611	498670.0	326110.0	52°49'24.6006"N 0°32'13.7125"W	52.8235	-0.53714	West Glen	Burton Coggles	60.8	EA-LN	031011	31	1969-01-01		FV	5.6	1.5		true	false	false	false	false	false	false	true	false	false	false	false	false	G	1969-02-13	2023-09-30	0.116	0.0	1969-09-18	2023-09-17	2.6	1969-05-06	1969-05-06	0.0	0.008	0.026	0.329	0.569	0.28	19953	19352	96.988				61.0	78.0	103.1	120.5	133.4	651	634	0.1758	0.5964	0.1938	0.0017	0.0314	0.0519	0.8265	0.12	0.0002	0.0013	0.2081	0.7164	0.0755				0.5152	0.27	0.48	1.0	29.8	32.75	32.1	41.3	11.6	14.43	7.2	100	115	0.27	61.0	32.07	0.481	1.05	0.0683	0.0019			0.0032					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir on the upper reaches of the West Glen.	Flat V weir replaced simple Crump profile weir in 1973.		Missing daily flow for June 2019 event as stage exceeded rating.	Upper reaches of the West Glen south of Grantham. Predominantly agricultural land.
31013	East Glen at Irnham	71.5	TF038273	503800.0	327300.0	52°49'59.6333"N 0°27'38.3850"W	52.83323	-0.46066	East Glen	Irnham	42.3	EA-LN	031013	31	1969-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	G	1969-02-14	2023-09-30	0.13	0.0	1974-08-03	2022-09-04	8.549	1980-08-15	1980-08-15	0.002	0.013	0.035	0.339	0.603	0.32	19952	19339	96.928				44.1	61.3	81.9	114.6	131.6	648	621	0.1014	0.7119	0.1456	0.0008	0.0331	0.0391	0.851	0.1043	0.0003	0.0053	0.4726	0.3502	0.1772		0.0199		0.3424	0.23	0.644	0.997	22.4	23.06	31.9	40.9	11.7	24.67	10.67	86	98	0.3	44.1	67.86	0.581	1.118	0.1072	0.0064	0.418	1.011	0.0063	0.622	1.064			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauge on the East Glen. Low flows only.	Flat V weir replaced simple Crump profile weir in Nov 1977.	Low flows only. Many high flows truncated or missing, which means that mean runoff is unrepresentative.	Missing data in 1976 and 1977. Missing daily flow for June 2019 event as stage exceeded rating.	N-S trending catchment of subdued relief. Mixed geology: Upper Jurassic Oxford Clay in lower catchment overlying Cornbrash and Oolite Series of Mid Jurassic. Around 30% Boulder Clay cover. Rural, predominantly arable land use.	Missing data in recent years due to stage exceeding upper limit of the rating.
31016	North Brook at Empingham	36.5	SK95710888	495710.0	308880.0	52°40'09.0861"N 0°35'09.8735"W	52.66919	-0.58608	North Brook	Empingham	50.4	EA-LN	031016	31	1969-01-01		C				true	false	false	false	false	false	false	true	false	false	false	false	false	SI	1969-02-05	2023-09-30	0.247	0.008	1998-09-19	1998-09-19	1.77	1977-02-25	1977-02-25	0.078	0.135	0.19	0.485	0.618	0.92	19961	19917	99.78				51.5	84.4	114.0	138.1	155.4	641	630	0.1335	0.6001	0.1877		0.0704	0.0951	0.7138	0.1472	0.0095	0.0306	1.0						0.3841	0.3	0.779	0.91	32.2	16.0	30.7	39.7	12.1	12.88	6.75	112	110	0.37	51.5	35.23	0.431	1.193	0.0789	0.0041			0.0244	0.744	1.39			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Simple crump weir on the North Brook. Unsuitable for high flows.	Simple Crump profile weir, crest 2.36m broad. Rated up to 0.584m (2.503 cumecs) but unsuitable for high flows.			Geology: Lincolnshire Limestone, Boulder Clay on highest ground. Rural catchment of mixed farming, with small wooded areas.	Catchment contains two artificial lakes.
31021	Welland at Ashley	250.7	SP81889157	481880.0	291570.0	52°30'57.1485"N 0°47'41.3384"W	52.51587	-0.79482	Welland	Ashley	55.7	EA-LN	031021	31	1970-01-01		C VA	22.1	4.9	32.4	true	false	false	false	false	false	false	true	false	true	false	false	true	REI	1970-10-01	2023-09-30	1.514	0.03	1976-08-25	1976-08-25	35.32	1981-04-27	1981-04-27	0.134	0.272	0.52	3.81	6.52	0.36	19358	19253	99.458				56.2	76.7	113.4	155.7	215.8	654	640	0.0739	0.4589	0.4219		0.0412	0.0243	0.5212	0.4138	0.0017	0.0374		0.0003	0.9997		0.0661		0.3793	0.3	0.325	0.992	47.2	47.92	32.0	40.7	12.1	33.2	17.89	115	105	0.1	56.2	247.08	0.767	0.832	0.1001	0.0096	0.651	1.053	0.0178	0.8	1.003			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a predominantly rural catchment with low permeability and with some artificial influences.	Crump profile weir in realigned channel beneath bridge. Weir has crest length of 6.97m. Original prebarrage and drop off weirs removed in 2013. Replaced by broad-crested weir 8.7m downstream of gauging weir, with rock prebarrage 3m further downstream. Removed from peak flows dataset in September 2020 (WINFAP Files v9).	Flows above 22 cumecs - including all floods - influenced by bridge soffit and are therefore unreliable - removed from peak flow dataset due to this truncation. Weir is theoretically calibrated to wing wall height with rated section above. Theoretical rating applied to wing wall height across period of record.		Catchment developed on low permeability bedrock geology with significant superficial deposits, mainly Boulder Clay. Rural catchment with mixed farming; Market Harborough is in upper catchment.	Abstractions for irrigation, and reservoir for maintenance of canal flow. Some effluent returns. Missing data in recent years due to stage exceeding upper limit of the rating.
31022	Jordan at Market Harborough	20.8	SP74058667	474050.0	286670.0	52°28'22.6207"N 0°54'40.5585"W	52.47295	-0.91127	Jordan	Market Harborough	75.3	EA-LN	031022	31	1970-01-01		C				true	false	false	false	false	false	false	true	false	false	false	false	false	E	1970-04-11	2023-09-30	0.091	0.0	1970-07-22	2021-09-25	0.75	1972-01-08	1972-01-27	0.003	0.012	0.03	0.271	0.419	0.35	19531	19158	98.09				76.0	91.1	121.1	144.0	157.5	652	647	0.0564	0.5278	0.3764		0.0369	0.0056	0.6098	0.3583	0.0036	0.0228		0.0042	0.9958		0.0741		0.447	0.3	0.287	1.0	45.5	49.83	32.8	39.7	12.5	8.82	4.72	119	321	0.21	76.1	18.61	0.449	0.755	0.056	0.0041	0.197	0.351	0.0135	0.791	1.002			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Simple Crump profile weir gauge on the Jordan. Low flows only.	Simple Crump profile weir, crest 1.47m broad. Rated up to 0.354m (0.673 cumecs).	Low flows only. Most high flows are truncated or missing, leading to unrepresentative mean runoff.	Data available 1970-present. Missing data 05/1992-01/1995.	Low permeability bedrock geology, with 50% superficial deposits, mainly Boulder Clay. Rural catchment with mixed farming.	Missing data in recent years due to stage exceeding upper limit of the rating.
31023	West Glen at Easton Wood	4.4	SK96582584	496580.0	325840.0	52°49'17.2266"N 0°34'05.6201"W	52.82145	-0.56823	West Glen	Easton Wood	81.0	EA-LN	031023	31	1972-01-01		FV		10.7		true	true	false	true	false	false	true	false	false	true	false	false	true	N	1972-02-01	2022-09-30	0.02	0.0	1972-05-30	2022-09-30	1.34	1981-04-26	1981-04-26	0.0	0.0	0.002	0.048	0.099	0.12	18505	18063	97.611	1972-02-01		1.717	78.4	92.1	110.5	120.8	122.7	647	641	0.3257	0.6122	0.0416		0.0205	0.2311	0.726	0.0429			0.8336	0.1664					1.0	0.27	0.32	1.0	33.0	41.25	33.1	42.7	11.7	3.81	1.92	108	86	0.36	77.8	4.38	0.295	0.979	0.0508	0.0			0.0			1971		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ephemeral site installed to gauge a small rural catchment as part of study into recharge of Lincolnshire Limestone.	Flat V weir with crest length of 8.05m. Installed as part of study into recharge of Lincolnshire L'st.	There is a 90 degree bend in the channel immediately d/s of the crest. Theoretically rated to 10.7 cumecs. No out of bank flow rating. One peak flow rating across period of record.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Small catchment entirely on Boulder Clay: flows disappear into l'st d/s of gauging station. Rural catchment, mixed farming with significant woodland component.	Ephemeral regime. Natural to within 10% at Q95. No abstractions or returns.
31024	Holywell Brook at Holywell	22.3	TF02681473	502680.0	314730.0	52°43'13.7552"N 0°28'52.3855"W	52.72049	-0.48122	Holywell Brook	Holywell	27.0	EA-LN	031024	31	1972-01-01		C				true	false	false	false	false	false	false	true	false	false	false	false	false	G	1971-12-01	2023-09-26	0.113	0.0	1976-06-23	2022-12-22	1.74	2019-11-15	2019-11-15	0.007	0.051	0.084	0.239	0.314	0.89	18928	18418	97.306				27.5	54.3	86.6	114.4	134.5	614	614	0.2169	0.5239	0.1939	0.0047	0.0542	0.1825	0.5865	0.2053	0.0116	0.0126	0.5399	0.4601					0.4141	0.26	0.633	0.94	37.4	23.99	32.5	41.6	11.9	14.13	6.35	85	87	0.34	27.6	23.64	0.328	1.276	0.0657	0.0036			0.009	0.602	1.494			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir on the Holywell Brook.	Crump weir, 2.498m wide. Calibrated up to around 1.8 cumecs only.		Missing data 12/1990-01/1995. Missing daily flow for June 2019 event as stage exceeded rating. Data has been removed from 01/01/2012 onwards due to sudden spikes in data.	A rural catchment (some woodland) developed mainly on Jurassic l'st - with some superficial deposits.	Baseflow dominated flow regime. Missing data in recent years due to stage exceeding upper limit of the rating.
31025	Gwash South Arm at Manton	24.5	SK87410507	487410.0	305070.0	52°38'10.8555"N 0°42'35.2412"W	52.63635	-0.70979	Gwash South Arm	Manton	83.9	EA-LN	031025	31	1978-01-01		FV		16.1	50.0	true	true	false	true	false	false	false	true	false	true	false	false	true	I	1978-09-01	2023-09-30	0.182	0.002	2022-08-14	2022-08-15	6.68	1993-01-13	1993-01-13	0.007	0.019	0.045	0.451	0.786	0.27	16466	16466	100.0	1978-08-01		9.919	85.4	110.9	149.5	182.6	212.0	675	663	0.0874	0.3587	0.4985		0.0548	0.0777	0.3827	0.5272		0.0103			1.0				0.8979	0.3	0.306	0.995	61.2	45.0	30.3	40.8	12.4	12.09	6.99	147	127	0.18	85.8	23.68	0.249	0.625	0.0257	0.003			0.0064	0.66	1.033			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Measuring inflows into Rutland Water reservoir from a rural catchment, station affected by bypassing, weed-growth and siltation.	Flat V weir (crest length 5m) measuring inflows to Rutland Water.	Weir bypassed at high flows. Some effect of weed and silt. HR Wallingford report suggests modular to around 15.3 cumecs in summer and 17 cumecs in winter. Theoretically calibrated, one rating applied across period of record.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Rural catchment on Boulder Clay.	No abstractions, small returns.
31026	Egleton Brook at Egleton	2.5	SK87810725	487810.0	307250.0	52°39'21.1565"N 0°42'11.8828"W	52.65588	-0.7033	Egleton Brook	Egleton	83.9	EA-LN	031026	31	1979-01-01	2014-04	FV		3.6		true	true	false	true	false	false	false	false	false	false	false	false	false	N	1978-11-01	2014-04-21	0.023	0.0	1979-07-20	2013-10-11	1.24	2008-01-15	2008-01-15	0.0	0.003	0.006	0.047	0.091	0.26	12956	12798	98.78	1978-10-01	2014-10-01	1.135	85.1	90.4	107.3	143.2	154.5	653	645	0.0636	0.7046	0.1901		0.0418	0.0197	0.677	0.2918		0.0116			1.0					0.3	0.533	1.0	41.0	33.41	30.0	40.0	12.0	3.33	1.75	111	55	0.68	85.1	2.3	0.75	0.717	0.0936	0.0046	0.005		0.0111	0.727	0.269			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir measuring inflows to Rutland Water reservoir from a small, rural, natural catchment.	Flat V weir 2m wide measuring inflows to Rutland Water.	Theoretically rated, but could drown at high flows due to sharp bend d/s and weed growth. One rating applied across period of record.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Small catchment on Boulder Clay and low permeability geology. Rural, mixed farming.	Natural to within 10% at Q95. No abstractions or returns.
31028	Gwash at Church Bridge	76.5	SK95080825	495080.0	308250.0	52°39'49.1023"N 0°35'44.0552"W	52.66364	-0.59557	Gwash	Church Bridge	56.2	EA-LN	031028	31	1982-01-01		CC				true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1982-10-07	2023-09-30	0.148	0.046	2016-12-27	2016-12-28	2.386	1986-09-10	1986-09-10	0.074	0.097	0.112	0.262	0.306	0.82	14969	13409	89.578				50.5	84.5	110.4	163.9	212.0	652	645	0.1182	0.3502	0.3154	0.0001	0.073	0.0717	0.3752	0.3464	0.0011	0.048	0.1497		0.8503				0.3428	0.3	0.479	0.603	41.1	36.23	29.9	39.7	11.9	21.37	10.01	117	96	0.35	51.0	75.97	0.316	0.937	0.0503	0.0119	0.522	0.929	0.0276	0.811	1.011			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound crump profile weir immediately d/s of Rutland Water.	Compound Crump profile weir. Immediately d/s of Rutland Water. Site monitors compensation flows.		Data available from 1983-present. Missing data in 01/2005-12/2007.	Upper reaches of the Gwash starting in Knossington, draining Oakham. Catchment dominated by Rutland Water, but is otherwise predominantly grassland and agricultural land.	Heavily influenced by the outflow of Rutland Water.
32001	Nene at Orton	1634.3	TL16659719	516650.0	297190.0	52°33'36.1838"N 0°16'50.4260"W	52.56005	-0.28067	Nene	Orton	3.4	EA-LN		32	1939-01-01	1996-12-01	MIS		17.0		true	false	false	false	false	false	false	false	false	false	true	false	false	SPEI	1939-01-01	1996-12-31	9.298	0.085	1948-07-29	1948-07-29	319.8	1947-03-18	1947-03-18	1.104	2.832	4.66	23.86	35.88	0.51	21185	18859	89.021				6.5	41.5	90.1	136.4	223.9	624	616	0.1027	0.5389	0.2597	0.0008	0.0879	0.0664	0.5813	0.2446	0.0043	0.0922	0.0221	0.5333	0.4446		0.0492	0.0006	0.4077	0.26	0.533	0.918	35.4	35.64	30.6	39.2	12.1	135.22	83.4	90	92	0.11	6.7	1619.82	1.124	0.876	0.1038	0.0299	0.701	1.024	0.0471	0.82	1.036			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Series of sluices, weirs and lock on the Nene.	Series of sluices, weirs and lock. High flows measured at Wansford (32010) and corrected.	Ratings revised and historical data altered in 1975 and 1983. Ultrasonic gauge tested in 1976 but abandoned. Flows >17 cumecs measured at Wansford (32010) 12km u/s and corrected for smaller area. Wansford was a rated section (ratings and data revised in 1981) but now has a cross, multiple path ultrasonic gauge measuring the full-range. Provenance of 1947 peak data is uncertain and under review, but this was undoubtedly an exceptional event.		Lowest gauging point on Nene. Mostly clay (72%) and rural, but includes some towns and several small reservoirs.	Water abstracted at Wansford and sent to Rutland Water, with significant effect on low flows.
32002	Willow Brook at Fotheringhay	89.6	TL067933	506700.0	293300.0	52°31'37.6801"N 0°25'43.0930"W	52.52713	-0.42864	Willow Brook	Fotheringhay	15.2	EA-LN	032002	32	1938-01-01		FV			8.2	true	true	false	true	false	false	false	true	false	false	false	false	false	SEI	1938-10-01	2023-09-30	0.804	0.062	1944-08-08	1944-08-09	13.8	1947-03-17	1947-03-17	0.275	0.514	0.644	1.36	1.88	0.73	31046	30379	97.852	1938-10-01		6.174	15.8	45.2	91.4	123.9	140.9	607	603	0.1529	0.4177	0.2039	0.0014	0.2069	0.1314	0.4994	0.1833	0.0148	0.166	0.0248	0.9471	0.0281		0.0003		0.5196	0.25	0.374	0.899	29.2	43.18	30.8	38.8	12.2	37.59	20.0	88	111	0.23	15.9	94.47	0.584	1.07	0.0883	0.0642	0.746	1.39	0.1093	0.867	1.368	1999		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging a predominantly urban catchment with significant urban cover in the upper part. Artificial influences evident at low flows.	From 2000, Flat V weir (with wall height 16.42mAOD). Pre-2000, structure was a flume (1.676m wide throat, wall height 16.6mAOD).	Flat V weir is subject to bypassing and considered unreliable above 1.2m. Pre-2000 flume rating based on model tests, bypassing occurred at 6.5 cumecs and was not allowed for. The most recent rating is valid from 2000 when weir reconstructed. Two ratings applied across period of record. Pre-2000 rating considered unreliable above 1.38m; post-2000 rating considered unreliable above 1.2m. Flood plain flow is considerable above QMED.	1938-2000 record considered unreliable above 1.38m because of poor rating for that period. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Underlain by clay in headwaters and some l'st, around half Boulder Clay cover. Largely rural with mixed farming in lower catchment, but includes Corby in upper catchment. Diversion caused loss of 4.66 sq.km of catchment to Harpers Brook in 1963.	Three small reservoirs continue to have minor influence on low flows. Low flows significantly influenced by abstractions for Corby steelworks (including imports from Eye Brook) until 1980.
32003	Harpers Brook at Old Mill Bridge	74.3	SP98367984	498360.0	279840.0	52°24'27.8443"N 0°33'19.7726"W	52.40773	-0.55549	Harpers Brook	Old Mill Bridge	30.3	EA-LN	032003	32	1938-01-01		FV		15.2	16.3	true	true	false	true	false	false	true	true	true	true	false	false	true	N	1938-12-01	2023-09-30	0.435	0.015	1976-08-26	1976-08-26	31.3	1998-04-09	1998-04-09	0.074	0.128	0.193	0.937	1.546	0.47	30985	30702	99.087	1938-12-01		13.104	30.5	57.4	90.4	122.2	145.9	618	622	0.2098	0.5166	0.2251		0.0463	0.1927	0.5842	0.1773	0.0085	0.0369		0.8024	0.1976				0.734	0.3	0.415	1.0	37.7	40.93	31.5	39.9	12.6	26.99	12.5	89	112	0.19	30.6	70.46	0.466	1.013	0.0618	0.0081	0.53	1.108	0.017	0.764	1.153	1974..1979		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Site with several gauging structures throughout POR, gauging a predominantly rural, natural catchment.	Rated section prior to 1965, then compound Crump profile weir (central crest 1.22m, total crest length 3.66m). Replaced in 1998 by flat V (4.04m wide between existing wing walls).	The compound Crump profile had calibration confirmed to 4.8 cumecs, but the weir drowned around 7 cumecs and was bypassed in extreme floods. Current flat V is modular to approx. 20 cumecs. Considerable floodplain inundation above about 1.5 QMED, therefore significant uncertainty attends highest flows. Two ratings applied across period of record, the most recent is valid from Oct 1998 when flat-V installed. No ratings have out of bank limbs; 1938-1964 considered unreliable above 1.99m, 1964-1998 unreliable above 1.67m, 1998-date unreliable above 1.7m.	Highest peak flow of 22 cumecs in 1981 is extrapolated and should be treated with caution. The HIF of 15.6 cumecs on 10/04/1998 is likely to be an under-estimate; the flow was not captured but it may have been the highest on record. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Natural catchment. Low-lying impervious catchment, clay largely covered with Boulder Clay. Predominantly agricultural with some forest. Some ironstone mines working until early 1980s. Catchment area increased by 8% (4.66sq.km) after diversion from Willow Brook in 1963. In April 1979, 3.64sq.km was diverted from Harpers Brook to Ise Brook - this is not accounted for in the catchment area.	Natural to within 10% at Q95.
32004	Ise Brook at Harrowden	194.0	SP89927125	489920.0	271250.0	52°19'55.1284"N 0°40'54.5760"W	52.33198	-0.68183	Ise Brook	Harrowden	45.3	EA-LN	032004	32	1943-01-01		FV		26.0	58.3	true	true	false	true	false	false	false	true	false	false	false	false	false	SI	1943-12-01	2023-09-30	1.362	0.001	2008-11-11	2008-11-11	35.9	1998-04-10	1998-04-10	0.178	0.422	0.692	3.02	4.79	0.52	29159	28391	97.366	1943-12-01		14.997	47.2	73.0	107.1	145.6	195.5	631	635	0.0923	0.5129	0.2786	0.0004	0.1098	0.0486	0.592	0.2466	0.0038	0.1056		0.5563	0.4437		0.029	0.0027	0.3879	0.29	0.542	0.974	40.0	35.15	30.8	39.2	12.6	44.65	18.99	108	97	0.16	47.2	194.36	0.474	1.036	0.0605	0.0355	0.75	0.601	0.063	0.865	0.644			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Site with several different structures installed throughout POR, gauging a rural catchment with mixed geology and some artificial influences.	A weir existed already in 1936, so a rectangular notch was cut in in Oct 1936. In Jun-Dec 1943, the rectangular notch was replaced by a flume with low flow notch and the bypass channel was straightened. In 1964, this flume was replaced by a compound Crump weir (its construction. Finally, in 1976, a flat V weir with 5.15m crest was constructed.	Considerable flood plain flow above bankfull. Crump weir was modular to 15.6 cumecs (but bypassed at 14.2 cumecs). Flat V is also bypassed. Multiple ratings for various structures applied across period of record, the most recent is valid from April-1976 (flat V) and accounts for the bypassing. 1943-1965 rating considered unreliable above 1.6m, 1965-1976 rating unreliable above 1.39m.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Underlain by clay and sandstone, nearly half covered with superficial deposits, mainly in higher areas on catchment margins. Predominantly rural catchment of mixed farming, but includes Kettering in lower catchment.	Two small storage reservoirs with minor influence on low flows; receives Kettering effluent.
32006	Nene/Kislingbury at Upton Total	223.0	SP72085919	472080.0	259190.0	52°13'34.3415"N 0°56'46.1498"W	52.22621	-0.94615	Nene/Kislingbury	Upton Total	61.6	EA-LN	032806	32	1939-01-01		FL+C			20.5	true	false	false	false	false	false	false	true	false	true	false	false	true	E	1939-11-01	2023-09-30	1.455	0.065	1944-09-28	1944-09-28	38.2	1947-03-17	1947-03-17	0.28	0.525	0.811	3.17	4.86	0.58	30650	30546	99.661				61.1	87.8	125.5	160.6	223.9	675	651	0.0855	0.4933	0.3461		0.0696	0.0289	0.5186	0.39	0.0019	0.0568		0.1267	0.8733		0.1593		0.1633	0.3	0.452	0.974	47.4	42.63	33.0	41.6	12.0	32.16	19.45	124	96	0.12	61.2	220.69	0.685	0.855	0.0821	0.0149	0.6	1.258	0.0291	0.793	1.156			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound site of main channel and bypass channel with long POR gauging a rural catchment on clay, with some artificial influences.	Compound site. Main channel flow measured in 3.2m wide standing wave flume under mill. Flow in bypass channel measured at Crump profile weir (crest 6.12m) since 1969 and flows summed to produce total.	Very high flows bypass both channels. Before 1969 flows through bypass controlled by broad-crested weir with no recorder, and total flows based on average relationship between levels in main channel and bypass; rating for this period considered unreliable above 1.2m. Since 1969, flows measured separately at mill and bypass; respective limits of reliability are 1.2m (mill) and 1.05m (bypass).		Mostly clay with some superficial deposits, mainly Boulder Clay. predominantly rural catchment with land use of mixed farming.	No major abstractions but several sewage work effluent returns.
32007	Nene/Brampton at St Andrews Total	232.8	SP74906136	474900.0	261360.0	52°14'43.2087"N 0°54'15.8229"W	52.24534	-0.9044	Nene/Brampton	St Andrews Total	59.4	EA-LN	032807	32	1939-01-01		FLB			25.8	true	true	false	true	false	false	false	true	false	false	false	false	false	SPEI	1939-04-01	2023-09-30	1.147	0.014	1944-08-12	1944-08-17	24.94	1980-08-15	1980-08-15	0.224	0.401	0.615	2.373	3.69	0.57	30864	28971	93.867	1940-11-01		18.818	59.4	87.0	115.6	153.5	206.4	642	648	0.089	0.5372	0.2834	0.0	0.0751	0.0359	0.5888	0.2922	0.0011	0.0652		0.5237	0.4763		0.0089		0.325	0.3	0.543	0.918	43.1	35.17	31.5	40.8	12.4	24.9	15.3	118	156	0.14	59.4	233.02	0.49	0.889	0.0608	0.0194	0.684	0.365	0.0417	0.824	0.505			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound site located in Northampton, gauging a catchment with mixed geology and three reservoirs significantly affecting runoff.	Compound site. Main channel flow measured in 2.743m wide standing-wave flume in mill race. Flow in bypass channel measured at 9.11m wide broad-crested weir and flows summed to produce total.	Bypassing of both structures commences at about 17 cumecs. No recorder on bypass before 1969, total flows were estimated using average relationship between levels in flume and bypass. 1940-1969 AMAX gives total flow at mill and bypass sites; considered unreliable above 1.39m. Post-1969 mill rating unreliable above 1.11m.		Mixed geology, mostly clay, about one third covered with Boulder Clay. Predominantly rural catchment of mixed farming. Urban development (Northampton) in lower catchment, u/s of station. Significant water reservoirs in the catchment.	Abstraction from reservoirs reduce low flows. Some effluent returns. Pitsford reservoir (filled between 1952 and 1956) is the largest of the three PWS reservoirs controlling flow from about one third of the catchment.
32008	Nene/Kislingbury at Dodford	107.0	SP62756070	462750.0	260700.0	52°14'27.3111"N 1°04'56.8046"W	52.24092	-1.08245	Nene/Kislingbury	Dodford	79.2	EA-LN	032008	32	1945-01-01		C		10.0	20.8	true	true	false	false	true	false	false	true	false	false	false	false	false	E	1945-03-01	2023-09-30	0.642	0.037	1949-09-07	1949-09-11	10.0	1968-07-11	1975-03-09	0.123	0.224	0.348	1.42	2.14	0.57	28703	28536	99.418	1945-03-01		9.755	80.5	102.3	130.2	161.0	212.7	687	660	0.0773	0.5053	0.3202		0.0901	0.0238	0.5201	0.3674	0.0032	0.079		0.0622	0.9378		0.2326		0.2411	0.3	0.455	0.958	41.7	42.75	33.2	41.6	12.3	18.25	10.42	131	121	0.13	80.5	104.26	0.665	0.863	0.0863	0.0231	0.674	1.396	0.0411	0.822	1.305			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a catchment with mixed geology, predominantly rural land use, and with some significant artificial influences.	Crump profile weir with 2.667m crest replaced broad-crested weir with low flow notch in 1967.	Weir theoretically calibrated, but bypassing begins at 7 cumecs (1.038m). Weir can drown at high flows, floodplain flow is considerable once the river is out of bank, so flows are significantly underestimated from about 1.1m stage. Two ratings applied across period of record, the most recent is valid from Dec 1966 when weir was replaced. No allowances for out of bank flow, thus ratings unreliable above 1.45m pre-1966 and 1.4m post-1966. Scatter in gaugings above 0.3m. High flows measured 2km upstream at Flore Hill.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Mostly clay with nearly half of the catchment covered with superficial deposits (Boulder Clay, glacial sand and gravel in lower valley). Predominantly rural with mixed farming but some urban areas present, especially in W. Daventry and Drayton reservoirs in catchment (8.65 sq.km), built in 1804. Motorways (M1, M45) cross the catchment.	Reservoirs and abstractions affect regime, and low flows influenced by returns from STW. Abstraction for supply to Grand Union Canal.
32010	Nene at Wansford	1530.0	TL08069955	508060.0	299550.0	52°34'58.9096"N 0°24'23.6339"W	52.58303	-0.40656	Nene	Wansford	7.9	EA-LN	U32610	32	1939-01-01		US	165.0			true	true	true	true	false	false	false	true	false	false	false	false	false	SPEI	2004-01-01	2023-09-30	10.199	1.52	2022-08-04	2022-08-04	113.0	2012-11-26	2012-11-26	2.77	4.21	5.78	22.8	34.7	0.6	7213	7111	98.586	1939-05-01		62.043	9.1	47.7	92.4	138.0	223.9	626	620	0.1041	0.5343	0.2603	0.0008	0.0903	0.0647	0.5761	0.2485	0.004	0.0956	0.0015	0.5428	0.4556		0.049	0.0007	0.4206	0.28	0.52	0.915	36.2	36.56	30.7	39.3	12.2	121.32	74.13	93	91	0.1	9.1	1516.08	1.04	0.902	0.0984	0.0312	0.705	0.987	0.0492	0.824	1.001	1939..1963	1939-10-01..1964-06-16	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station measuring peak flows only superseded by an ultrasonic station in 1996. Gauging a predominantly rural catchment with significant urban areas, with mixed geology, and with significant artificial influences.	Cross, multiple path (6 velocity and 1 depth) ultrasonic gauge installed 01/06/1996. Previously was a 97m wide VA station with cable way for current metering and sounding, for flows over 28.3 cumecs, used for high flow measurement on River Nene, with low and medium flows measured at Nene at Orton (32001).	Structure spills into a lake on the right bank. Bankfull was originally 9.4 mAOD, increasing to 10.3 mAOD after bank raising work in 1964. Datum used for majority of record is 7.9mAOD but discrepancies found over years (maximum 120mm), accepted level record accuracy +-50mm. Multiple peak flow ratings applied across period of record. Current rating unreliable above 1.9m with no out of bank limb post-1964 (2.34m).	Dataset up to October 1970 has been reset to same datum (7.9 mAOD). Peak flows held (no daily means) during velocity area operation and rejected until 1964 because of rating uncertainty. Although ultrasonics were installed in 1996, data quality was poor until 2004 when the NRFA daily flow record begins. Missing data in May 2020 due to upgrade of ultrasonic gauge.	Mixed geology, moderate to very low permeability. Predominantly agricultural land use but several small towns in the catchment. Northampton is completely within this catchment on R. Nene.	Flows influenced by abstractions for public water supply. Water level below 8.36mAOD affected by mill operation at Water Newton. Navigation retention level is 8.0mAOD.
32012	Wootton Brook at Lady Bridge	53.3	SP736571	473600.0	257100.0	52°12'25.9874"N 0°55'27.6875"W	52.20722	-0.92436	Wootton Brook	Lady Bridge	65.4	EA-LN		32	1968-01-01	2000-12	C		0.5		true	false	false	false	false	false	false	false	false	false	false	false	false	E	1968-07-22	2000-12-31	0.216	0.004	1976-08-12	1976-08-27	11.2	1998-04-10	1998-04-10	0.027	0.056	0.1	0.392	0.574	0.47	11851	5344	45.093				65.5	80.9	102.1	117.2	130.3	634	621	0.1882	0.5601	0.2148	0.0004	0.0362	0.1241	0.5808	0.1955	0.0028	0.0962		0.6459	0.3541		0.0374		0.7928	0.3	0.439	0.996	25.7	40.25	29.3	38.2	11.9	18.46	9.38	100	335	0.14	65.5	53.94	0.631	0.955	0.0897	0.0186	0.595	0.386	0.0185	0.744	0.337			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Simple Crump profile weir on the Wooton Brook. Short low flows record, and short full flow record.	Simple Crump profile weir, crest 1.83m broad. Rated up to 0.25m (0.488 cumecs).	Low flows only until mid 1990s.	Patchy data (high flows missing) 07/1969-09/1982. Data begins again 01/1997 and extends to 06/2000.	Underlain by 80% Boulder Clay. Small rural catchment, with 20% woodland.	Largely natural regime; one small discharge in headwaters. Sporadic flow record.
32016	Willow Brook South at Corby South	7.6	SP90078863	490070.0	288630.0	52°29'17.3803"N 0°40'29.8327"W	52.48816	-0.67495	Willow Brook South	Corby South	101.0	EA-LN	032016	32	1969-01-01		C				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1971-02-01	2023-09-30	0.048	0.0	1972-09-06	2021-09-13	1.0	1991-07-01	1991-07-01	0.002	0.015	0.025	0.115	0.178	0.35	19235	18961	98.576				95.3	110.9	123.9	133.7	136.5	620	629	0.1149	0.2314	0.1908	0.004	0.459	0.1158	0.3474	0.1094		0.4245		1.0					0.9745	0.3	0.325	0.972	18.9	41.64	31.1	39.2	12.7	7.2	4.0	123	113	0.43	95.3	6.42	0.936	0.988	0.1339	0.1861	0.834	0.785	0.2649	0.887	0.769			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Simple Crump profile weir on the upper reaches of the Willow Brook. Low flows only.	Simple Crump profile weir, crest 1.83m broad. Rated up to 0.304m (0.651 cumecs).	Low flows only.	Data available 02/1971-present.	Upper reaches of a largely urban catchment draining Corby.
32019	Slade Brook at Kettering	58.3	SP872763	487200.0	276300.0	52°22'40.1070"N 0°43'13.5200"W	52.37781	-0.72042	Slade Brook	Kettering	56.2	EA-LN	032033	32	1970-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	SEI	1970-09-01	2023-09-30	0.357	0.017	2022-08-13	2022-08-13	16.4	2020-12-23	2020-12-23	0.058	0.131	0.214	0.75	1.11	0.58	19388	18023	92.96				56.9	77.6	109.8	139.8	162.4	632	636	0.088	0.5198	0.2232	0.0002	0.1589	0.044	0.5601	0.2242	0.0048	0.1593		0.6336	0.3664			0.0056	0.2323	0.29	0.622	0.956	44.4	31.52	31.0	39.1	12.8	17.05	7.34	109	91	0.25	57.0	56.38	0.303	0.971	0.0409	0.0507	0.764	0.58	0.0894	0.893	0.632			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauge on the Slade Brook, recording full range post-1995. Most high flows truncated or missing pre-1995.	Full-range Flat V weir. Replaced low flow simple Crump profile weir (crest 2.42m broad, rated up to 0.3m: 0.848 cumecs) in early 1988, following river improvements.		Most high flows are truncated or missing in pre-1995 record; water balance more realistic over subsequent years. Due to subsisdence at the station, low flow data from 17th November 2023 onwards may be of reduced quality. Temporary equipment has been used since this date until the station can be rebuilt.	Catchment is 50% clay and 50% s'st, with over 20% cover of Boulder Clay. Rural headwaters, with urban development (Kettering) in lower catchment.
32020	Wittering Brook at Wansford	46.9	TL089995	508900.0	299500.0	52°34'56.6894"N 0°23'39.0805"W	52.58241	-0.39419	Wittering Brook	Wansford	9.1	EA-LN		32	1970-01-01	1985-04	C				true	false	false	false	false	false	false	false	false	false	false	false	false	EI	1970-03-01	1985-04-11	0.227	0.011	1976-08-27	1976-08-27	1.4	1981-04-26	1981-04-26	0.091	0.136	0.18	0.423	0.52	0.86	5521	5520	99.982				8.9	29.9	62.9	85.2	96.3	590	568	0.1199	0.596	0.2092		0.0659	0.1422	0.6167	0.1668	0.0198	0.05	0.7424	0.1392	0.1184		0.0215		0.0153	0.21	0.89	0.974	25.7	9.7	28.7	37.8	11.6	13.31	6.73	60	107	0.34	8.9	44.99	0.448	1.136	0.0922	0.0134	0.623	0.974	0.0219	0.745	1.056			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Simple Crump profile weir at confluence with Nene. Low flows only.	Simple Crump profile weir, crest 2.44m broad. Rated up to 0.308m (0.896 cumecs).	Low flows only. Truncation of high flows results in unrepresentative mean runoff.	Data available 03/1970-03/1984.	Tributary of the Nene.
32029	Flore at Experimental Catchment	7.0	SP656604	465600.0	260400.0	52°14'16.4089"N 1°02'26.7785"W	52.23789	-1.04077	Flore	Experimental Catchment	80.2	EA-LN		32	1973-01-01	1979-12-31	FL				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1973-11-01	1979-02-28	0.041	0.0	1975-07-04	1976-09-10	1.651	1975-03-09	1975-03-09	0.001	0.003	0.007	0.094	0.201	0.41	1946	1792	92.086				78.2	90.4	102.9	129.7	150.5	646	624	0.0675	0.5807	0.3361		0.0106	0.0186	0.5678	0.4104		0.0032		0.227	0.773		0.1		0.1441	0.3	0.43	1.0	38.9	42.69	32.0	41.7	12.1	4.18	2.46	105	183	0.29	78.2	8.31	0.53	0.843	0.0858	0.0009			0.0017					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume gauging only low flows of a responsive catchment but producing a patchy record.	Trapezoidal critical depth flume. Low flows only. Built upstream of the culvert beneath the M1 motorway. Station removed from peak flows dataset in August 2024 (WINFAP Files v13).	Rated to 1.92m (8.49 cumecs). Rating based on theoretical equations for flume. No check gauging carried out at this site. One peak flow rating across period of record.	Patchy record.	Entirely rural and consists mainly of Jurassic and drift clay. There are small pockets of limestone and gravel sand.	Responsive regime.
32031	Wootton Brook at Wootton Park	73.85	SP72605774	472600.0	257740.0	52°12'47.1744"N 0°56'19.8667"W	52.2131	-0.93885	Wootton Brook	Wootton Park	64.2	EA-LN	032031	32	1982-01-01		FV			26.5	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1982-01-01	2023-09-30	0.448	0.017	2022-08-13	2022-08-14	11.8	2003-01-02	2003-01-02	0.041	0.099	0.178	1.04	1.72	0.42	15248	14756	96.773				62.8	78.9	101.5	123.0	142.4	634	620	0.1875	0.5425	0.2302	0.0003	0.0392	0.0962	0.5883	0.2192	0.0023	0.0928		0.5406	0.4594		0.0659		0.6548	0.3	0.474	0.997	27.7	38.33	29.3	38.4	11.8	20.18	9.44	100	1	0.17	62.8	75.97	0.807	0.916	0.0952	0.0175	0.574	0.486	0.0178	0.725	0.448			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Triangular Flat V weir on the Wooton Brook. Drowns at high flows.	Triangular Flat V weir (crest length 8m); theoretical rating. Drowns at high flows due to limited capacity of culverts d/s.	Just d/s of Lady Bridge gauging station (32012), a low flow-only station running 1968 to 1985.	Data available 09/1983-present. Missing data Jun-Nov 2000 and all months of 2006.	Mostly underlain by Boulder Clay with some exposed Upper Lias clays and small areas of plateau gravel and Oolitic L'st. Catchment predominantly rural, with expanding Northampton suburbs near gauging station.	No abstractions or returns.
33001	Bedford Ouse at Brownshill Staunch	3030.0	TL3696272740	536962.0	272740.0	52°20'08.3518"N 0°00'31.5031"E	52.33565	0.00875	Bedford Ouse	Brownshill Staunch	3.4	EA-EA		33	1936-01-01	1962-12-31	MIS				true	false	false	false	false	false	false	false	false	false	true	false	false	SPGEI	1936-10-01	1962-06-30	14.407	0.0	1936-10-09	1959-11-20	311.5	1947-03-16	1947-03-16	0.991	3.398	6.173	36.53	59.47	0.4	9404	9255	98.416				4.1	26.9	74.9	128.9	247.3	613	601	0.0822	0.5822	0.2448	0.0001	0.0819	0.0532	0.6192	0.2379	0.0046	0.0742	0.1626	0.2561	0.5053	0.076	0.0839	0.0101	0.5151	0.25	0.462	0.95	27.8	40.85	29.5	37.2	10.9	198.11	101.39	76	60	0.09	4.1	3034.7	1.313	0.821	0.1536	0.0274	0.648	0.871	0.0381	0.811	0.927			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Complex structure measuring discharge from Bedford Ouse, providing indication of runoff patterns between 1936 and 1962.	Station consisted of a navigation lock and three radial gates with a low flow notch.	Complicated hydrometric arrangement, with no unique stage-discharge relationship. Low flows based on gate openings. Rated section for high flows, using calibration by float measurement.	Record likely to be of poor quality, but provides indication of runoff patterns from 1936-62.	Large, mixed catchment. Geology of Great Oolite and Oxford clays, with substantial Boulder Clay cover. Mixed rural land use, some urban development in lower valleys.
33002	Bedford Ouse at Bedford	1460.0	TL0535349560	505353.0	249560.0	52°08'03.5067"N 0°27'43.8390"W	52.13431	-0.46218	Bedford Ouse	Bedford	24.7	EA-EA	033002	33	1933-01-01	2015-12-31	MIS				true	false	false	false	false	false	false	false	false	true	false	false	true	SPGEI	1933-01-01	2015-12-31	10.775	0.008	1934-08-15	1934-08-31	278.1	1947-03-15	1947-03-15	1.133	3.2	5.381	27.38	40.6	0.53	30315	30315	100.0				24.1	64.6	100.7	139.6	247.3	648	636	0.1078	0.5085	0.3055	0.0003	0.0731	0.0587	0.5291	0.3273	0.0046	0.0743	0.0746	0.4334	0.4297	0.0622	0.0443	0.0026	0.5683	0.3	0.453	0.938	30.9	39.91	29.9	38.0	10.7	136.8	92.15	101	94	0.06	24.1	1469.71	1.078	0.947	0.1192	0.0217	0.623	0.849	0.035	0.788	0.878			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir with the oldest record in HA 33. From 1972, more convincing flow series available from Roxton d/s (33039). Station closed 31/12/2015.	3 broad-crested weirs, 30m, 20m and 12m wide + 3 vertical sluice gates (either fully open/closed). Duckmill Weir is a broad crested weir with 2 sluice gates; width 30.48m, wing wall 25.885mAOD. Boathouse Weir is a broad crested weir, width 19.5m. Newnham Weir is a weir with 1 sluice gate, width 11.8m. Removed from peak flows dataset in February 2018 (WINFAP Files v6).	Above bankfull, water spills over right bank to join d/s channel. Lock gates opened at high flows. One peak flow rating applied across period of record. Confirmed by current meter measurements, the rating assumes set gate openings. Recommended to be used to bankfull only.	From 1972, more convincing flow series available from Roxton d/s (33039). The Apr 1998 peak flow is thought to be an overestimate. The period-of-record maximum is believed to have occurred in Mar 1947; no peak flow available but is unlikely to be significantly higher than the DMF (278 cumecs). Records before 1959 based on daily gauge-board levels and gate openings (limited accuracy, few HIFs & many replicated GDFs). Flow record may be inaccurate due to flow manipulation (kayaking) and 33039 should be used instead.	Predominantly clay. Mainly agricultural land use with substantial urban development over last 25 years.	Reservoir(s) in catchment affect runoff. Surface and groundwater abstractions in catchment for PWS and Milton Keynes' effluent significant.
33003	Cam at Bottisham	803.0	TL5079565696	550795.0	265696.0	52°16'07.4961"N 0°12'30.4853"E	52.26875	0.20847	Cam	Bottisham	2.4	EA-EA	033003	33	1936-01-01	1987-11-09	MIS		30.0	11.2	true	false	false	false	false	false	false	false	false	false	false	false	false	GEI	1936-10-01	1987-11-09	3.644	0.227	1944-06-18	1949-10-06	51.96	1947-03-14	1947-03-14	0.906	1.696	2.432	7.033	10.08	0.65	18667	18383	98.479				4.7	16.3	52.5	107.3	165.5	580	566	0.0563	0.6888	0.1675		0.0806	0.0386	0.7375	0.149	0.0022	0.071	0.769	0.0116	0.0052	0.2143	0.0752	0.0002	0.3571	0.25	0.65	0.992	27.5	27.9	28.3	35.5	10.7	61.27	37.56	57	8	0.13	6.9	807.33	1.094	0.775	0.162	0.028	0.632	0.666	0.0402	0.814	0.655			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Complex structure gauging Chalk catchment of River Lee in its lower reach with some artificial influences.	Triangular profile weir, 7.7m wide, plus two vertical lift gates and a lock. Prior to Jun 1982 broad-crested weir incorporating a sharp-crested rectangular central notch, 2.4m wide.	The lock is opened at high flows. Weir drowns at approx. 0.3m head.	Patchy peak-flow record available.	Chalk overlain by Boulder Clay in the S. Predominantly agricultural land use.	Two substantial gw abstractions for industry; 21 for PWS. All abstractions returned within the catchment.
33004	Lark at Isleham	466.2	TL6489875686	564898.0	275686.0	52°21'15.9733"N 0°25'11.4462"E	52.35444	0.41985	Lark	Isleham	2.4	EA-EA	033004	33	1936-01-01	1986-01-31	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	GEI	1936-10-01	1986-01-31	1.803	0.0	1957-06-23	1976-08-24	19.2	1952-03-08	1952-03-08	0.439	0.916	1.356	3.35	4.672	0.64	18020	17741	98.452				7.3	15.9	52.2	101.1	124.7	603	585	0.1284	0.6244	0.1804	0.0003	0.0642	0.1319	0.6076	0.2058	0.0021	0.0482	1.0				0.1504	0.021	0.5313	0.26	0.784	0.965	22.9	18.04	28.7	37.1	10.7	46.6	26.09	56	360	0.19	7.3	464.16	0.806	0.765	0.1455	0.017	0.573	1.068	0.0253	0.786	1.091			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a navigation lock with Bury St Edmunds and large gw abstractions in the catchment dominated by Chalk geology and arable agriculture.	Navigation lock with vertical lift gate u/s plus a 16m broad high level weir in bypass channel for flood flows only. Small notch inserted in 1980. 1986 weir was lowered, altered to triangular profile and flows diverted to the bypass channel. The lock is now used during high flows only.		Since 1968 major peaks diverted through cutoff channel (10km u/s) - to the Relief Channel at Denver.	Chalk, predominantly arable.	Two large gw abstractions (Bury St Edmunds).
33005	Bedford Ouse at Thornborough Mill	388.5	SP7346335314	473463.0	235314.0	52°00'41.0531"N 0°55'51.7968"W	52.0114	-0.93105	Bedford Ouse	Thornborough Mill	71.1	EA-EA	033005	33	1951-01-01	1991-08-28	MIS		40.0		true	true	true	true	false	false	false	false	false	false	false	false	false	SPGEI	1951-01-01	1991-08-31	2.538	0.003	1976-08-26	1976-08-26	38.78	1979-12-14	1979-12-14	0.239	0.602	1.218	6.06	9.645	0.5	14853	14837	99.892	1950-09-11	1978-10-01	21.8	70.2	87.9	112.9	142.4	182.3	667	655	0.1328	0.4826	0.3419	0.0001	0.0402	0.0468	0.5169	0.4015	0.0014	0.0304		0.5613	0.4387		0.042		0.5803	0.31	0.48	0.983	27.4	37.29	30.4	38.4	10.3	39.99	22.31	114	148	0.06	70.2	387.67	0.771	0.921	0.1108	0.0092	0.585	0.882	0.0137	0.726	0.994	1978..1990	1978-10-01..1991-09-30	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flow records generally affected by sluice movement and implementation of digital recording in 1979.	Flat V Crump profile weir 10.2m wide and two sluice gates 3.6m broad. Before 1976 weir was broad-crested with centre V notch.	A bypass channel exists, but operation of gates has ensured the highest flows have been recorded. Significant scatter in gaugings as a result of differing gate positions.	Since 1979, peak flow recordings have been digital but recorded only upstream stage, not gate opening and downstream level. Peak flows since 1979 are therefore unreliable and rejected. Daily flows not calculated since Aug 1991. Inaccurate DMF measurement complicated by automatic sluice movement which was not integrated into flow calculation methods. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	The catchment is flat and lies mainly on the Great Oolite. One large tributary drains an area of Oxford Clay. There is a water supply reservoir and a number of ornamental lakes in the catchment.	Flows affected by reservoirs in catchment. Abstraction for public water supply, and industrial and agricultural uses reduces runoff. Runoff increased by effluent returns.
33006	Wissey at Northwold Total	274.5	TL7710796526	577107.0	296526.0	52°32'16.0461"N 0°36'35.8804"E	52.53779	0.60997	Wissey	Northwold Total	5.3	EA-EA	033006	33	1956-01-01		FL+FL			9.2	true	false	false	false	false	false	false	false	false	false	false	false	false	PGEI	1956-02-13	2023-09-30	1.946	0.181	1991-09-19	1991-09-19	13.3	2016-06-26	2016-06-26	0.489	1.05	1.586	3.76	4.65	0.82	24702	24702	100.0				7.7	24.6	45.6	70.3	94.3	665	659	0.1603	0.5338	0.2682		0.0366	0.1342	0.5203	0.3188	0.0017	0.0213	1.0				0.0395		0.7366	0.3	0.762	0.946	19.6	20.18	28.1	36.1	11.2	39.39	23.26	46	203	0.13	8.4	259.37	0.805	0.926	0.136	0.0136	0.592	1.208	0.0137	0.724	1.14			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Single site until 1983, since then a compound site with flows calculated as summation of the main flume and a side flume.	Flow record is summation of a rectangular critical depth flume (4.9m wide) and a flume on a separate side stream which takes approx. 30-40% of the runoff. Streams rejoin just d/s of gauges. Post-1983, the flow from the second weir (side stream) was recorded, and 33006 is the summation of both structures. Eel tiles are installed on the main stream. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Drowning common - flows adjusted. Flows are the summation of two weirs. In 1980, Northwold Brook was diverted into the Wissey and Little River equally. More recently, all flow has been diverted into the Little River.	DMF in June-Dec 2007 were anomalously high and therefore adjusted by the Environment Agency; values appear plausible but should be treated with caution. Since 2012, non-modular flow has become more common and occurs at lower stages. This is currently under investigation.	Chalk largely overlain by Boulder Clay (permeable in parts). Low population density. Largely arable in upper (northern) catchment, extensive grassland, heathland, and some woodland in lower (southern) part of catchment.	Abstraction for public water supply, industry and agriculture. Effluent returns increase runoff. Limited net impact of abstractions and discharges but spray irrigation increasing (substantial proportion from groundwater).
33007	Nar at Marham	153.3	TF7234811976	572348.0	311976.0	52°40'41.0552"N 0°32'52.5021"E	52.67807	0.54792	Nar	Marham	4.6	EA-EA	033007	33	1953-01-01		FLCB		25.6	12.0	true	true	true	true	false	false	false	true	false	false	false	false	false	PGEI	1953-09-01	2023-09-30	1.082	0.124	1991-09-20	1991-09-20	7.0	1977-02-12	1977-02-12	0.364	0.687	0.899	1.97	2.4	0.9	25597	25592	99.98	1953-10-01		3.6	7.5	20.7	64.1	80.4	92.3	688	683	0.0888	0.7387	0.1387		0.0328	0.0753	0.7205	0.1905	0.001	0.0096	0.9804			0.0196	0.1772		0.4679	0.26	0.804	0.926	23.4	16.57	29.2	37.8	11.1	41.53	18.3	58	271	0.09	7.5	147.39	0.712	0.979	0.133	0.0092	0.522	0.937	0.0059	0.635	0.934	1968..1981	1968-10-01..1982-04-05	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Critical depth flume measuring Chalk catchment with predominantly agricultural land use.	Round nosed horizontal crest weir (7.13m wide). Prior to April 1982, low flow flume in centre making structure 7.47m wide (now sealed off).	Weed growth can be a problem during summer if not cut regularly. Level measurements taken just upstream of weir. Two peak flow ratings applied across period of record. Modular limit is estimated at 6 cumecs and is accounted for in the current rating.	Anomalous summer flows in June 2004 and August 2006, resulting from locals damming the weir. HIF POR updated in 2014. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Chalk catchment overlain by Boulder Clay in upper reaches. Agricultural land use, predominantly arable.	Surface water abstraction for PWS immediately u/s of station. Also surface/groundwater abstraction in catchment for industry/agriculture. Three small underground abstractions were abandoned in 1986. Effluent returns may increase runoff.
33009	Bedford Ouse at Harrold Mill	1320.0	SP9499356463	494993.0	256463.0	52°11'53.6142"N 0°36'41.6153"W	52.19823	-0.61156	Bedford Ouse	Harrold Mill	40.8	EA-EA	033009	33	1955-01-01	1996-10-31	CB		84.0	6.7	true	false	false	false	false	false	false	false	false	false	false	false	false	SPGEI	1955-08-01	1996-10-31	9.593	0.096	1959-10-05	1959-10-05	139.3	1959-01-22	1959-01-22	1.498	2.92	4.94	22.6	34.3	0.53	15068	14421	95.706				39.7	72.4	104.0	141.0	247.3	655	641	0.1117	0.4986	0.3147	0.0003	0.0701	0.0587	0.5168	0.3402	0.0049	0.0738	0.0829	0.4387	0.4093	0.0691	0.0409	0.0029	0.5609	0.3	0.448	0.933	30.7	40.11	30.1	38.1	10.7	95.66	58.59	106	82	0.05	40.7	1323.55	0.992	0.937	0.1167	0.0202	0.613	0.855	0.0333	0.783	0.871			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir gauging a catchment with significant PWS abstractions.	Compound structure comprising a compound broad-crested weir plus two side spilling broad-crested weirs u/s. Not primarily constructed for flow measurement, essentially a level site. Harrold mill weir under the mill structure. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Ratings are theoretical and do not include out of bank flows.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Limestone overlain by Boulder Clay. Mainly agricultural land use with substantial urban development associated with Milton Keynes.	Major public water supply abstractions in catchment, for Milton Keynes and Foxcots. Also abstractions for industrial/agricultural purposes. Effluent returns may increase runoff. Reservoir(s) in catchment.
33011	Little Ouse at County Bridge Euston	128.7	TL8924280188	589242.0	280188.0	52°23'13.2293"N 0°46'45.8808"E	52.38701	0.77941	Little Ouse	County Bridge Euston	13.4	EA-EA	033011	33	1960-01-01		CB		30.0	12.2	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1948-09-20	2023-09-30	0.491	0.0	1949-08-14	2022-10-14	11.0	1952-03-10	1952-03-10	0.07	0.176	0.305	0.963	1.46	0.69	27404	26402	96.344	1960-10-02		4.036	12.7	24.0	39.4	55.4	65.5	602	596	0.1178	0.7036	0.1459		0.0316	0.105	0.6506	0.2211	0.0006	0.0202	1.0				0.0442		0.7332	0.28	0.652	0.985	17.4	26.08	27.5	34.9	10.7	30.12	17.28	39	352	0.12	12.7	129.34	0.814	0.983	0.1459	0.0086	0.41	0.982	0.0081	0.675	1.058	1980		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound weir gauging a Chalk catchment with predominantly agricultural land use.	Compound weir with triangular profile centre section, 3.4m broad; broad-crested flanks in trapezoidal channel 9m broad.	One rating applied across period of record. Hydraulic model used to derive rating for peak flows, including out of bank and bypassing. Reasonable fit to gaugings. Part of the Thet-Little Ouse groundwater support scheme, which triggers at 95 l/s to maintain flow.	Peak flows available from 1960. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Predominantly Chalk with significant Boulder Clay cover. Agricultural land use, predominantly arable.	Groundwater abstractions for PWS and spray irrigation. Some effluent returns.
33012	Kym at Meagre Farm	137.5	TL1560763134	515607.0	263134.0	52°15'15.2717"N 0°18'28.0974"W	52.25424	-0.3078	Kym	Meagre Farm	17.2	EA-EA	033012	33	1960-01-01		CB	49.0	16.0	66.0	true	true	false	true	false	false	false	true	false	false	true	false	false	EI	1960-05-01	2023-09-30	0.615	0.0	1976-06-11	2022-08-13	21.9	1964-03-15	1964-03-15	0.02	0.048	0.11	1.47	2.96	0.26	23163	23160	99.987	1960-09-01		16.726	18.2	32.7	62.8	87.7	103.7	610	585	0.0573	0.7458	0.1766		0.0203	0.0541	0.7903	0.1411	0.0007	0.0133			1.0		0.0933		0.6	0.24	0.309	0.992	26.1	49.43	29.0	36.3	11.8	31.48	16.58	61	87	0.18	18.2	138.15	0.767	0.878	0.1207	0.0074	0.38	0.887	0.0073	0.58	0.887	1963..2002		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound weir gauging a predominantly clay catchment with near-natural flow regime.	Compound weir with triangular profile centre section 3m wide and broad-crested flanks in a trapezoidal channel, 8.5m wide. One of 3 stations used to calculate Offord flow to determine abstraction regime at Grafham Water. No major bridge/weir change from 1959 drawings to H Reed 1994 survey.	Downstream level used to flag non-modularity. Peak flow rating takes non-modularity into account but there is a high degree of scatter. One peak flow ratings applied across period of record. There is a stage offset of +1m in WISKI. This has been applied to all stage data, ratings, gaugings, bankfull and wingwall height.	Peak flows rejected between 1963 and 1966 due to low confidence. Water year 2002/2003 rejected due to AMAX occurring during missing period in Jan-Mar 2003. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Predominantly clay catchment - very flashy by Anglian standards. Agricultural, predominantly arable.	Predominantly natural regime with modest abstractions for agriculture. Some effluent returns.
33013	Sapiston at Rectory Bridge	205.9	TL8955979048	589559.0	279048.0	52°22'35.9831"N 0°47'00.3096"E	52.37666	0.78342	Sapiston	Rectory Bridge	15.6	EA-EA	033013	33	1949-01-01		TP		14.0	40.4	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1949-01-01	2023-09-30	0.676	0.0	1991-10-12	2019-09-10	9.35	1952-03-09	1952-03-09	0.09	0.257	0.425	1.47	2.12	0.65	27301	26640	97.579	1949-01-01		5.221	13.1	34.5	52.6	69.1	94.6	606	589	0.0837	0.7185	0.1427		0.0551	0.0701	0.7021	0.1914	0.0005	0.0342	0.9902	0.0098			0.138		0.7572	0.28	0.611	0.975	18.5	28.47	28.2	35.1	10.7	37.21	20.53	52	1	0.17	13.1	196.16	0.78	1.03	0.1367	0.0109	0.432	1.039	0.0198	0.697	1.043			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a catchment with minor artificial influences using a theoretical rating.	Rectangular thin-plate weir, 8.8m broad, suppressed end contractions.	Rating theoretical. Rating confirmed by gaugings to 0.6m, non-modular conditions unaccounted for. One rating applied across period of record.	Flows in 2014 may be affected by periodic damming. Since 2012 the site suffers from sudden and localized changes in river flow which manifest as short term increase, decrease, and recovery in GDF and as HIF much higher than GDF. Occasional gate openings upstream cause short-term increases in flow which only last a few hours. During low flows these increases may be reflected in HIFs and AMAX but have a minor effect on GDFs. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Predominately Chalk with Boulder Clay cover. Agricultural land use, predominantly arable.	Minor groundwater abstractions for PWS and agriculture. Some effluent returns.
33014	Lark at Temple	272.0	TL7580572944	575805.0	272944.0	52°19'35.1299"N 0°34'42.2196"E	52.32642	0.57839	Lark	Temple	8.9	EA-EA	033014	33	1960-01-01		CB		25.0	6.8	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1960-11-01	2023-09-30	1.27	0.127	1997-08-18	1997-08-18	20.0	1968-09-17	1968-09-17	0.456	0.749	0.994	2.26	3.02	0.77	22979	22929	99.782	1960-10-01		7.76	9.9	28.7	53.3	97.9	124.7	608	593	0.1649	0.607	0.1455	0.0005	0.0793	0.1633	0.5831	0.1822	0.0028	0.0626	1.0				0.1272	0.016	0.7056	0.27	0.782	0.944	23.3	18.4	28.0	36.8	10.6	32.71	17.86	59	19	0.16	9.9	274.04	0.586	0.924	0.1096	0.022	0.609	1.011	0.0353	0.813	1.003			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir gauging a Chalk catchment with significant artificial influences.	Compound broad-crested weir with rectangular cross-section, 5.8m broad, central notch 3m broad.	Not drowned at 1.8m stage. One rating applied across period of record, full range rating confirmed by current meter measurements.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly Chalk overlain with Boulder Clay. Agricultural land use.	Flows affected by milling u/s of gauging station. Significant groundwater abstractions in catchment for PWS, industry and agriculture. Some effluent returns.
33015	Ouzel at Willen	277.1	SP8818640799	488186.0	240799.0	52°03'30.8304"N 0°42'54.6534"W	52.05856	-0.71518	Ouzel	Willen	57.3	EA-EA	033015	33	1962-01-01		FV		43.0	8.9	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1962-01-01	2023-09-30	2.02	0.026	1980-09-20	1980-09-20	26.9	2003-01-02	2003-01-02	0.459	0.778	1.18	4.45	6.83	0.55	22553	21445	95.087	1961-11-22		19.75	56.5	79.4	104.3	141.2	247.3	658	637	0.059	0.4982	0.3016	0.0006	0.1343	0.0526	0.472	0.334	0.0125	0.12	0.3034	0.0214	0.3505	0.3246	0.0696	0.0136	0.3534	0.31	0.464	0.926	34.8	41.55	30.7	38.4	10.2	43.4	26.93	109	2	0.08	56.5	281.8	0.924	0.952	0.1321	0.0368	0.652	0.744	0.0658	0.83	0.69			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a predominantly rural catchment with mixed bedrock, influenced by Leighton Buzzard and by Milton Keys in the lower part, high flows may be underestimated.	Flat V Crump profile weir (10m broad) and sluices. The present weir replaced a compound broad-crested weir (10m broad) with bypass channel in 1977 when the river was realigned.	Radial lifting gate immediately u/s of weir diverts very high flows to adjacent balancing reservoir which empties d/s of weir. This may result in high flows being appreciably less than those seen upstream at Bletchley (33058). Annual floods do not bypass. FSR Grade A1 in 1971. Two ratings applied across period of record, the most recent is valid from July 1977 when weir rebuilt.	Monthly maxima (HIFs) may be offset from daily mean flows during periods of gate movement. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Mixed bedrock geology, with Greensand and Oxford Clay and some Boulder Clay cover. Primarily a rural catchment of mixed agriculture, although Leighton Buzzard is in catchment, and southern suburbs of Milton Keynes are situated in lower valley just u/s of station.	Runoff influenced by industrial/agricultural abstraction and effluent returns.
33016	Cam at Jesus Lock	761.5	TL4497659325	544976.0	259325.0	52°12'47.0676"N 0°07'13.8901"E	52.21307	0.12053	Cam	Jesus Lock	5.2	EA-EA		33	1959-01-01	1983-12	MIS			26.3	true	false	false	false	false	false	false	false	false	false	false	false	false	GEI	1959-05-01	1983-12-31	2.808	0.255	1964-08-23	1976-07-09	36.0	1978-05-06	1978-05-06	0.705	1.27	1.67	6.23	8.96	0.64	9011	8934	99.145				7.9	19.4	55.4	108.1	165.5	582	567	0.0571	0.7086	0.1661		0.062	0.04	0.76	0.1444	0.0021	0.052	0.7878	0.0121	0.0047	0.1953	0.0581		0.3701	0.25	0.645	0.994	28.5	28.07	28.3	35.6	10.7	50.39	28.1	60	4	0.13	7.9	769.18	0.856	0.811	0.1407	0.0191	0.561	0.783	0.0277	0.771	0.75			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Complex structure located in Cambridge, gauging a Chalk catchment with some artificial influences.	Broad-crested weir V-shaped in plan, 21.3m long in parallel with two sluice gates and a navigation lock. Gauging station is in Cambridge.	Flows based on upstream and downstream levels and gate openings, subject to inaccuracies from gate opening data.	GDF until Jun 1960 is likely incorrect.	Chalk catchment partly overlain by Boulder Clay.	Some abstractions in catchment.
33018	Tove at Cappenham Bridge	138.1	SP7114448673	471144.0	248673.0	52°07'54.4469"N 0°57'43.4019"W	52.13179	-0.96206	Tove	Cappenham Bridge	80.8	EA-EA	033018	33	1962-01-01		CB	32.0	29.0	12.0	true	true	false	true	false	false	true	true	true	true	false	false	true	EI	1962-02-01	2023-09-30	0.991	0.071	1976-08-24	1976-08-26	32.72	1998-04-09	1998-04-09	0.169	0.317	0.512	2.14	3.305	0.53	22522	22522	100.0	1962-02-01		16.95	84.2	104.3	133.6	160.4	186.3	697	661	0.0919	0.4928	0.3717		0.0413	0.0527	0.5228	0.3922	0.0022	0.0289		0.6673	0.3327		0.0227		0.5778	0.3	0.368	0.986	37.1	41.17	31.6	40.2	11.4	22.2	11.78	132	85	0.13	84.4	132.54	0.556	0.799	0.0621	0.0065	0.532	0.579	0.0157	0.719	0.697	1962		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir gauging a predominantly Chalk catchment. Station has record length over 50 years.	Compound broad-crested trapezoidal weir, 7.6m broad; central notch, 2.7m broad.	The weir is subject to drowning at high flows with some bypassing on the left bank; further gaugings required to confirm extent of this. Theoretical rating since Aug 1970. Previously, rating derived using a hydraulic model. Full EA rating developed in 2012 combining existing EA rating for first 3 segments, regression through check gaugings for segments 4 and 5, and an EA modelled high flow rating used for the top segment. New rating applied to length of record.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly Chalk overlain with 50% Boulder Clay. Agricultural land use.	Runoff increased by effluent returns and reduced by industrial/agricultural abstraction.
33019	Thet at Melford Bridge	316.0	TL8796183000	587961.0	283000.0	52°24'45.7189"N 0°45'43.8794"E	52.4127	0.76219	Thet	Melford Bridge	10.5	EA-EA	033019	33	1962-01-01		C		14.5	14.2	true	true	true	true	false	false	true	true	false	false	false	false	true	GEI	1962-12-01	2023-09-30	1.885	0.096	1976-08-25	1976-08-25	15.64	2020-12-27	2020-12-27	0.437	0.889	1.39	3.83	4.9	0.78	22219	22219	100.0	1960-10-01		7.11	10.1	24.6	38.6	52.6	71.3	636	620	0.1571	0.6239	0.1729		0.0454	0.1397	0.5769	0.2456	0.0018	0.0323	1.0				0.0503		0.7453	0.31	0.707	0.932	13.9	23.94	28.2	35.4	11.0	45.99	27.54	39	221	0.08	10.1	311.37	1.024	1.039	0.1901	0.0136	0.616	0.95	0.0141	0.774	0.883	1969..1979		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Triangular profile weir gauging rural, predominantly Chalk catchment, and with some artificial influences.	Triangular profile weir, 6.2m broad.	Infrequent drowning due to weed growth. Intense localised rainfall causes flashy response. Theoretical rating modified Apr 68. One peak flow rating applied across period of record. Out of bank and non-modular gaugings required to review rating.	Significant high flow event in September 1968 missing from record. Flows in autumn 2003 raised by flow augmentation during drought conditions. 2007-2008 late summer peak flows suspect due to possible stilling well blockage causing underestimation of flows. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly Chalk catchment largely overlain by Boulder Clay. Primarily arable land, with some grassland and forestry.	Flows are affected by groundwater abstraction for agriculture/industry, and by groundwater augmentation during drought conditions which can significantly raise flows. Sharp increases and decreases in flow due to surface water outfall just upstream of weir.Runoff increased by effluent returns.
33020	Alconbury Brook at Brampton	201.5	TL2083271757	520832.0	271757.0	52°19'50.1835"N 0°13'41.5530"W	52.33061	-0.22821	Alconbury Brook	Brampton	9.4	EA-EA	033080	33	1963-01-01		MIS	42.5	11.5	74.1	true	false	false	false	false	false	false	true	false	false	false	false	false	EI	1963-10-01	2023-09-30	0.869	0.0	1972-07-19	1991-09-26	62.9	2012-11-25	2012-11-25	0.013	0.057	0.147	2.092	3.821	0.27	21915	20312	92.685				9.5	19.3	48.4	71.6	87.9	605	564	0.027	0.7701	0.1587		0.042	0.0186	0.8179	0.122	0.0016	0.0376			1.0		0.0504		0.5384	0.22	0.319	0.999	24.8	52.28	29.3	37.5	11.8	30.2	16.3	47	94	0.2	9.5	212.72	1.067	0.807	0.1744	0.0107	0.493	0.707	0.0174	0.731	0.633			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging a rural, impervious catchment with some artificial influences. Record includes data from earlier broad-crested weir.	Flat V weir in trapezoidal channel (used to have ultrasonic for use when head above crest >1m) replaced (from 03/06/1995) former broad-crested CP weir with central low flow notch (closed in Sep 1993). Removed from peak flows dataset in May 2016 (WINFAP Files v4).	Drowns at approx. 1m stage and spills at 2m on a nearby horse racecourse. High flows impeded by bridges u/s and d/s. Theoretical rating but hydraulic model calibration for flanks prior to Apr 1978. Pre 1993 rating modified by current meter measurement to correct for drowning.	The highest flow on record is estimated by the EA to be 70 cumecs on 10/04/1998, although the gauge was subject to bypassing. Data post 1995 reprocessed following rating review. High flows from pre-1995 structure and post-1995 structure appear inconsistent.	Predominantly impervious catchment, Boulder Clay covers about half of the area. Agricultural land use, mainly arable.	Runoff affected by industrial/agricultural abstraction and effluent returns.
33021	Rhee at Burnt Mill	303.0	TL4153852368	541538.0	252368.0	52°09'05.2627"N 0°04'02.4219"E	52.15146	0.06734	Rhee	Burnt Mill	8.9	EA-EA	033021	33	1962-01-01		C		14.0	19.4	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1962-10-01	2023-09-30	1.175	0.05	1976-08-21	1976-08-22	20.7	1984-11-24	1984-11-24	0.257	0.465	0.71	2.42	3.49	0.73	22280	22279	99.996	1962-10-01		7.987	9.4	19.8	40.6	95.9	165.5	573	559	0.0332	0.7198	0.1932		0.0472	0.0217	0.7983	0.1342	0.0029	0.0416	0.7552			0.2448	0.0537		0.1634	0.24	0.713	0.994	24.8	24.05	28.3	35.0	10.6	35.24	18.49	49	10	0.24	9.4	308.05	0.934	0.885	0.1779	0.0142	0.523	0.864	0.0213	0.757	0.839	2017		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal weir gauging a predominantly Chalk catchment with primarily arable land and with significant artificial influences.	Trapezoidal cross-section weir with triangular profile crest, 6.1m broad. Also called Haslingfield (Burnt Mill). Consistent records available of groundwater pump operation. Pre barrage fish pass and eel tiles installed.	Weir drowns at high flows, starting from 0.48m stage and drowns completely at higher flows, worsened during summer due to weed growth d/s. Non-modular conditions are accounted for in the current rating. Rating modified by current meter measurements to correct for drowning and applied across period of record. Part of the Rhee groundwater support scheme, which triggers at combined flow of 301 l/s to maintain flow.	GDF and HIF from 2013/10/24 to 2015/03/04 was updated after September 2014 to compensate for site maintenance. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly Chalk catchment partly overlain with Boulder Clay in NW. Primarily arable land.	Substantial groundwater abstractions for PWS, plus industrial and agricultural abstractions. Some effluent returns. Augmentation from gw sources to regulate river flow - scheme aims to maintain minimum 0.3 cumecs flow at g/s.
33022	Ivel at Blunham	541.3	TL1528850922	515288.0	250922.0	52°08'40.4373"N 0°18'59.8598"W	52.14457	-0.31663	Ivel	Blunham	18.9	EA-EA	033022	33	1965-01-01		C		35.0	8.6	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1959-08-01	2023-09-30	2.981	0.41	1976-08-19	1976-08-19	31.2	1960-12-21	1960-12-21	1.07	1.64	2.19	5.38	7.48	0.73	23437	23039	98.302	1959-07-01		21.762	19.0	37.5	68.0	118.4	182.5	587	582	0.0832	0.5981	0.2016		0.1118	0.0706	0.6481	0.181	0.0036	0.0939	0.679	0.0224	0.0514	0.2472	0.102	0.0209	0.3453	0.27	0.646	0.98	31.2	30.21	29.9	36.9	10.6	42.96	24.57	73	22	0.15	19.1	539.63	0.796	0.831	0.127	0.0439	0.67	0.943	0.053	0.836	0.987	1964		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile gauging a catchment with mixed bedrock and significant artificial influences.	Crump profile weir 7.31m wide. Drowning occurs at 0.91m (rating includes drowning correction). Significant bypassing of station upstream. Pre-1966 record of poorer quality. One of 3 stations used to calculate Offord flows to determine abstraction regime at Grafham Water.	Significant bypassing when stage exceeds 1.1m causing 'truncation' effect in annual maxima series. Hydrograph reflects u/s mill operation. One rating applied across period of record based on current meter gaugings. There is no correction for non modularity as spot flows suggest modular to at least 1m. No correction has been made for out of bank flow and spot flows are taken downstream of bypass.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	The Ivel rises near Hitchin and flows north across Greensand, Chalk and Gault Clays to meet the Great Ouse east of Bedford. Predominantly superficial deposits, mainly Boulder Clay with some glacial sands and gravels. Predominantly agricultural, with some urban development.	Effluent from STW has substantial effect on low flows. Many abstractions for spray irrigation, and groundwater abstractions for PWS.
33023	Lea Brook at Beck Bridge	101.8	TL6623573254	566235.0	273254.0	52°19'55.8816"N 0°26'17.7223"E	52.33219	0.43826	Lea Brook	Beck Bridge	3.9	EA-EA	033023	33	1962-01-01		C		4.2	90.1	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1962-12-01	2023-09-30	0.237	0.003	1964-09-16	1991-10-31	10.8	1968-09-16	1968-09-16	0.017	0.048	0.117	0.569	0.825	0.69	22219	22219	100.0	1962-11-03		3.14	7.9	14.5	72.7	108.0	122.3	599	579	0.0685	0.6634	0.2306		0.0357	0.0746	0.6515	0.2481	0.0007	0.0244	1.0				0.1666		0.3949	0.21	0.561	0.996	22.4	18.95	30.5	38.1	10.9	34.06	7.14	65	352	0.28	8.0	105.95	0.68	0.636	0.1287	0.0089	0.009	0.81	0.0069	0.66	0.684	1962..1989		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir gauging a rural, Chalk catchment with some Boulder Clay and terrace deposits and with some artificial influences, all but the very highest flows are contained.	Crump profile weir 4m wide, situated approx. 20m u/s of new road bridge.	The POR maximum flow is believed to have been in Sept 1968, estimated as 15.1 cumecs by the EA but likely to have been extrapolated.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A rural Chalk catchment with Boulder Clay cover in upper (S) part of catchment. Some river terrace deposits in N. Mixed agricultural land use.	Some groundwater abstraction for PWS, also industrial/agricultural abstraction. Runoff increased by effluent returns.
33024	Cam at Dernford	198.0	TL4668650642	546686.0	250642.0	52°08'04.6067"N 0°08'30.4213"E	52.13461	0.14178	Cam	Dernford	14.7	EA-EA	033024	33	1949-03-01		TP		8.0	14.6	true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1949-02-21	2023-09-30	0.89	0.034	1949-07-03	1949-07-04	12.4	1978-05-06	1978-05-06	0.252	0.469	0.663	1.61	2.22	0.76	27250	27079	99.372				15.4	31.4	89.8	115.2	144.2	603	588	0.0891	0.6801	0.1571		0.0678	0.0679	0.745	0.1379	0.0007	0.0472	0.9684			0.0316	0.0428		0.5183	0.28	0.653	0.991	37.8	26.38	28.9	36.2	10.7	35.25	20.93	82	352	0.1	15.4	199.59	0.58	0.708	0.0811	0.0204	0.583	0.845	0.0279	0.767	0.81			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular thin-plate weir gauging predominantly pervious Chalk catchment with arable land use and significant artificial influences.	Rectangular thin-plate weir, 5.8m broad. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Bridge pier may affect approach velocity at high flows. Weir subject to drowning, tailwater levels measured to assist rating. Rating does not consider out of bank flow.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly pervious catchment underlain by Chalk. Some Boulder Clay cover, primarily in headwater areas. Land use mainly arable.	Five groundwater abstractions for PWS. Also abstractions for industry and agriculture. Flow regime is affected by industrial effluent returns derived from groundwater pumped within the catchment.
33025	Babingly at West Newton Mill	39.6	TF6949425633	569494.0	325633.0	52°48'05.8425"N 0°30'46.0560"E	52.80162	0.51279	Babingly	West Newton Mill	9.9	EA-EA		33	1963-01-01	1976-12-31	TP				true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1963-11-09	1976-07-31	0.362	0.082	1972-11-05	1972-11-06	1.482	1975-06-08	1975-06-08	0.153	0.25	0.324	0.603	0.711	0.92	4649	4422	95.117				13.4	19.6	60.4	81.6	93.4	697	689	0.0825	0.7324	0.1623		0.0187	0.0834	0.7355	0.1715	0.0009	0.0078	0.9031			0.0969	0.0983		0.238	0.24	0.916	0.941	29.2	8.96	29.8	37.6	11.0	15.99	8.46	54	275	0.15	13.4	44.69	0.562	0.789	0.1072	0.0095	0.458	0.86	0.0058	0.597	0.874			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a relatively small spring-fed stream with relatively short record of unrealistic runoff.	Sharp-crested weir inside converted mill building, with a bypass gate to a mill wheel.		Owners manipulated bypass gate, with no record kept of such openings, which limits accuracy of flows (particularly high flows, so unsuitable for flood purposes).	Small rural catchment, Chalk with some Boulder Clay.	Spring-fed stream, with unrealistic runoff because contributing area is greater than topographical catchment.
33026	Bedford Ouse at Offord	2570.0	TL2166166946	521661.0	266946.0	52°17'13.8931"N 0°13'04.0336"W	52.28719	-0.21779	Bedford Ouse	Offord	10.9	EA-EA	033126	33	1970-01-01		MIS			5.7	true	false	false	false	false	false	false	false	true	true	false	false	true	SPGEI	1972-01-01	2023-09-30	13.884	0.0	2019-09-18	2019-09-21	201.1	2020-12-26	2020-12-26	2.096	3.841	6.684	33.95	53.53	0.51	18901	18608	98.45				4.7	34.9	84.2	132.1	247.3	619	610	0.0907	0.5619	0.2564	0.0001	0.0845	0.0586	0.595	0.257	0.0049	0.0769	0.19	0.2638	0.4571	0.0891	0.0766	0.0059	0.5165	0.26	0.478	0.953	29.1	39.47	29.6	37.3	10.8	171.46	88.26	84	57	0.08	10.5	2566.31	1.137	0.869	0.1373	0.0288	0.654	0.794	0.0396	0.814	0.877			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Complex structure with no formal gauging. Offord flow is calculated using stations Roxton: 33039, Meagre Farm: 33012 and Blunham: 33022.	Offord Flow = (33039 + 33012 + 33022) x 1.08 - abstraction. The contribution of the station components depends on catchment response, with Roxton: 33039 contributing ~70-90%, Meagre Farm: 33012 contributing ~0-5% and Blunham: 33022 contributing the rest.Historic gauging from complex of automatic radial tilting weir, 15.2m broad; triangular profile weir, 14.8m broad; compound broad-crested weir, 22.7m broad.	Navigation lock opened at flows above 40 cumecs.	October 2016 - full period of record for net flows provided and loaded to NRFA, peak flow data were deleted as this is a complex site. Pollution monitoring can lead to the cessation of the abstraction pumps resulting in flow increases and subsequent drops, e.g., 03/09/2007-11/09/2007 and 20/02/2008-25/02/2008.	Large catchment of mixed geology, with substantial superficial deposits (about half Boulder Clay). Mixed agricultural land use with some substantial urban areas (Milton Keynes, Bedford) although overall urban fraction is small.	Substantial surface water abstractions for PWS, industry and agriculture. Significant gw abstractions. Abstraction 2km u/s for Grafham Water Res. (approx. 2 cumecs).
33027	Rhee at Wimpole	119.1	TL3330148518	533301.0	248518.0	52°07'08.0988"N 0°03'16.1463"W	52.11892	-0.05449	Rhee	Wimpole	17.9	EA-EA	033027	33	1965-01-01		FL		6.0	30.0	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1965-07-01	2023-09-30	0.501	0.0	1976-08-22	1976-08-27	10.2	2001-02-04	2001-02-04	0.083	0.166	0.264	1.13	1.66	0.67	21276	20959	98.51	1965-07-01		5.348	19.2	25.9	43.6	80.5	165.5	568	558	0.0257	0.7693	0.1692		0.0303	0.017	0.8537	0.1005	0.0021	0.0258	0.5391			0.4609			0.219	0.24	0.613	1.0	22.1	31.54	28.9	35.9	10.6	21.46	10.92	50	18	0.22	19.2	128.49	0.999	0.827	0.1963	0.0077	0.397	0.909	0.0131	0.699	0.909			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume gauges predominantly Chalk catchment with predominantly agricultural land use and some artificial influences.	Trapezoidal critical depth flume, 6.6m broad, horizontal crest 3.8m. Eel tiles installed.	Drowns at peak levels; correction incorporated into theoretical rating. Spills occasionally - high flows impeded by bridge abutments 20m d/s. Three peak flow ratings applied across period of record. Part of the Rhee groundwater support scheme.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Predominantly Chalk catchment with some Boulder Clay cover in N and W. Land use predominantly agricultural, predominantly arable.	Some surface water and groundwater abstractions in catchment. Runoff increased by effluent returns.
33028	Flit at Shefford	119.6	TL1424139310	514241.0	239310.0	52°02'25.5448"N 0°20'08.9119"W	52.04043	-0.33581	Flit	Shefford	36.6	EA-EA	033028	33	1966-01-01		FL		5.8	10.5	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1966-09-02	2023-09-30	0.889	0.145	1976-08-24	1976-08-26	23.7	2003-01-02	2003-01-02	0.376	0.564	0.693	1.474	2.04	0.74	20848	20842	99.971	1966-09-01		7.26	37.4	59.1	88.9	119.8	163.8	598	598	0.1231	0.4998	0.2605		0.1114	0.1211	0.5377	0.2482	0.0056	0.085	0.7331	0.0196	0.0722	0.175	0.0041		0.495	0.29	0.574	0.987	36.6	36.94	30.1	38.1	10.5	25.43	14.28	89	79	0.18	37.5	119.43	0.722	0.876	0.103	0.0341	0.654	0.936	0.0466	0.81	0.946			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume gauging predominantly greedsand catchment with mixed land use and some artificial influences including effluent from Luton.	Trapezoidal critical depth flume, 9.8m broad; 2.1m broad at horizontal crest. Structurefull 0.76m stage.	Subject to drowning at medium flows. Includes un-calibrated floodplain flow but, in practice, rating above 1.1m is not reliable. One peak flow rating applied across period of record.	The highest peak flow on record is 33 cumecs on 03/01/2003, although uncertainty attends this value because of non-modularity and considerable ungauged floodplain flow. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Predominantly Greensand with some Boulder Clay cover. Mixed agricultural land use with patches of woodland. Several small towns in catchment.	Flows affected by u/s mill operation. Surface water abstraction for spray irrigation. Abstraction for PWS closed in 1985. Flows augmented by effluent from Luton.
33029	Stringside at Whitebridge	98.8	TF7160200623	571602.0	300623.0	52°34'34.8487"N 0°31'51.6071"E	52.57635	0.531	Stringside	Whitebridge	2.5	EA-EA	033029	33	1965-01-01		FL			21.1	true	true	true	true	false	true	true	true	true	true	true	true	true	GI	1965-07-22	2023-09-30	0.506	0.001	1995-08-27	1995-08-27	4.7	2017-12-30	2017-12-30	0.055	0.207	0.374	1.1	1.32	0.84	21255	21245	99.953	1965-08-01		2.71	7.2	9.5	20.0	53.4	82.7	633	628	0.1253	0.6933	0.1402		0.0404	0.1217	0.7018	0.1469	0.0005	0.0272	0.9216			0.0784	0.021		0.2705	0.23	0.864	0.991	13.5	12.39	28.4	36.3	11.1	19.14	9.45	25	205	0.18	7.2	95.41	0.949	0.78	0.2259	0.0072	0.642	1.291	0.0066	0.806	1.344	1964..1993		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume designed to operate in the non-modular range, gauging a small rural catchment on Chalk with some artificial influences.	Trapezoidal critical depth flume, calibrated by model and designed to operate in the non-modular range.	Drowns at very high flows (e.g. Easter Floods 1998) and can spill on rare occasions. Peak flow events are influenced by timing of peak on the Ivel. There is great uncertainty when levels go above 0.8m. One peak flow rating applied across period of record. Includes floodplain and non-modular flow.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A Small rural catchment, mostly low-lying, developed mainly on Chalk with some Boulder Clay cover (mainly in W). Mixed land use, predominantly arable land, with significant woodland in E and no urban areas.	Baseflow-dominated regime but can be responsive. Two groundwater abstractions for PWS. Also abstractions for industry/agriculture.
33030	Clipstone Brook at Clipstone	38.8	SP9401625958	494016.0	225958.0	51°55'27.1690"N 0°38'03.2568"W	51.92421	-0.63424	Clipstone Brook	Clipstone	86.8	EA-EA	033090	33	1957-01-01		FV		18.58	38.9	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1957-10-01	2023-09-30	0.225	0.0	1968-09-15	2006-09-05	8.5	1959-01-21	1959-01-21	0.016	0.042	0.081	0.483	0.881	0.38	24106	14340	59.487	1957-01-01		8.914	84.4	97.7	124.8	146.1	162.5	654	641	0.0392	0.6501	0.2615		0.0455	0.0496	0.5978	0.3114	0.0126	0.0247	0.2649			0.7351	0.0899		0.55	0.31	0.365	0.974	34.3	47.42	30.6	38.1	10.5	10.61	5.84	124	189	0.15	86.7	38.81	0.608	0.815	0.08	0.0103	0.566	1.137	0.0118	0.787	1.134	1966..2005	1966-10-01..2006-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A triangular Flat V weir gauging a predominantly rural, Greensand catchment with some artificial influences. Multiple structures in operation during POR.	A triangular Flat V weir installed in 2002, 1km u/s of the previous structures: Crump weir (1966-1980) broad-crested weir (1957-1962).	Current daily flow rating considers drowning although there are limited gaugings to confirm rating. Two peak flow ratings applied across period of record, the most recent is valid from Oct 2002 when the new weir was constructed.	Peak flow data are only presented for the current structure (01/10/2006 onwards). Gap in record when station not operational (1980-2002). Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Greensand catchment, tributary to the river Ouzel. Predominantly rural, minor urban development (Leighton Buzzard).	Runoff influenced by groundwater abstraction/recharge. Runoff reduced by industrial/agricultural abstraction. Runoff augmented by effluent returns.
33031	Broughton Brook at Broughton	66.6	SP8883740914	488837.0	240914.0	52°03'34.1777"N 0°42'20.3728"W	52.05949	-0.70566	Broughton Brook	Broughton	56.6	EA-EA	033031	33	1971-01-01		FV	7.2	5.2	25.0	true	true	true	true	false	false	false	true	false	false	false	false	false	GE	1970-11-18	2023-09-30	0.33	0.003	1989-09-07	1989-09-07	18.1	1998-04-09	1998-04-09	0.038	0.073	0.12	0.664	1.158	0.34	19310	19116	98.995	1970-03-01		12.911	58.7	65.9	92.2	138.1	170.6	621	629	0.1175	0.4611	0.2834		0.1249	0.1339	0.4861	0.2738	0.0095	0.0928	0.3454	0.0067	0.6479		0.019		0.5771	0.31	0.482	0.967	29.1	40.87	29.1	37.4	10.4	21.62	10.75	98	307	0.17	58.7	70.06	0.862	0.67	0.1439	0.011	0.427	0.972	0.0379	0.786	0.794	1990		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station modified in 1977 gauging a flat catchment with greedsand bedrock, significant artificial influences due to public water supply abstraction.	Flat V Crump profile weir 7.0m wide installed in 1977 when river realigned. Prior to 23/6/77 trapezoidal critical depth flume 7.4m wide, horizontal crest 1m wide, located at SP892405.	Flume was subject to drowning but flows were corrected. Current rating includes floodplain flow and accounts for drowning. One peak flow rating applied across period of record.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Predominantly flat, the edge just impinging on the Chiltern escarpment. Clay and Greensand catchment, with some Boulder Clay cover. Mixed agricultural land use with some forestry in S, and significant urban development.	Runoff influenced by groundwater abstraction and recharge. One Greensand groundwater puclic water supply abstraction accounts for virtually all the abstraction in the catchment. Station located near Cotton Valley STW. Runoff increased by effluent return.
33032	Heacham at Heacham	59.0	TF6852337484	568523.0	337484.0	52°54'30.0905"N 0°30'16.2969"E	52.90836	0.50453	Heacham	Heacham	9.4	EA-EA	033032	33	1965-01-01		C+C		5.0	33.5	true	true	true	true	false	false	false	true	false	false	false	false	false	GI	1965-11-01	2023-09-30	0.204	0.015	1991-12-12	1991-12-12	1.09	1994-01-10	1994-01-10	0.054	0.116	0.165	0.384	0.48	0.97	21153	21108	99.787	1965-11-01		0.434	10.2	34.9	60.5	72.0	92.3	694	688	0.0861	0.6855	0.2155	0.0008	0.01	0.0897	0.7455	0.1567		0.0072	1.0				0.1094		0.3978	0.24	0.968	0.983	25.6	6.01	30.6	38.3	11.1	21.59	10.88	57	333	0.13	10.2	56.16	0.533	1.201	0.116	0.0164	0.523	1.006	0.0064	0.62	1.095	1965..1993		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Two crump weirs gauging a predominantly Chalk catchment with agricultural land use, topographical catchment area substantially exceeds the true contributing area.	Two Crump profile weirs in parallel, 3m broad in total.	Weirs never drown. Small bypass channel with weir upstream of station, rejoining downstream of weir, is factored in to the stage-discharge relationship. One rating applied across period of record.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Topographical catchment area substantially exceeds the true contributing area (by a factor of about two). Catchment area was determined in different ways. Area 55 sq. km is taken from the GA catchment area review of the Heacham/Wensum catchment boundary in 1996. This reduces the area from 59 sq. km, calculated in 1987, and from 89 sq. km adopted before 1987. The area of the NRFA catchment derived from IHDTM is 56 sq. km. Predominantly Chalk in parts overlain by Boulder Clay. Agricultural land use.	Groundwater abstraction for PWS and irrigation.
33033	Hiz at Arlesey	108.0	TL1900437883	519004.0	237883.0	52°01'35.7763"N 0°16'00.8228"W	52.0266	-0.2669	Hiz	Arlesey	35.7	EA-EA	033033	33	1973-01-01		C		12.9	19.0	true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1973-04-01	2023-09-30	0.679	0.204	1976-08-27	1976-08-27	7.56	2014-02-07	2014-02-07	0.335	0.465	0.568	1.08	1.37	0.85	18445	18441	99.978				35.5	51.0	84.0	136.1	178.6	618	602	0.0778	0.6342	0.1535		0.1336	0.0592	0.6219	0.1867	0.0022	0.1291	0.9481			0.0519	0.1914	0.0955	0.1928	0.3	0.771	0.99	35.6	20.35	29.6	36.1	10.5	25.64	13.34	87	20	0.17	35.5	112.96	0.566	0.804	0.0948	0.0578	0.689	0.889	0.0697	0.847	0.903			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile gauging a predominantly Chalk catchment with arable farming and urban development, flows affected by weir drowning and artificial influences in the catchment.	Crump profile weir, 7m broad. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Highest recorded flow was contained by weir banks. Subject to drowning at peak flows, but flows are not corrected. Out of bank rare and floodplain limb not verified. Few gaugings to confirm rating which is uncertain. Station subject to drowning with no non-modular correction.	Flows in August 2010 affected by drowning. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Predominantly Chalk catchment, with significant superficial deposits (Boulder Clay, sands and gravels). Predominantly arable farming but with significant urban development (Hitchin).	Significant gw abstractions for PWS. Industrial/agricultural abstractions also occur. Augmentation by effluent affects diurnal flow pattern.
33034	Little Ouse at Abbey Heath	688.5	TL8508984362	585089.0	284362.0	52°25'33.2713"N 0°43'14.7597"E	52.42591	0.72077	Little Ouse	Abbey Heath	7.2	EA-EA	033034	33	1968-01-01		C		40.0	10.6	true	true	true	true	false	true	false	true	true	true	true	true	true	GEI	1968-04-01	2023-09-30	3.686	0.364	2022-09-15	2022-09-15	33.08	2020-12-27	2020-12-27	1.03	1.88	2.75	7.19	9.39	0.8	20271	20260	99.946	1968-03-01		15.2	8.1	25.3	41.7	60.0	94.6	618	607	0.1533	0.6325	0.1633		0.0503	0.141	0.596	0.2237	0.0017	0.0348	0.9973	0.0027			0.077		0.6944	0.29	0.694	0.959	16.3	23.98	28.2	35.3	10.9	50.63	29.12	42	351	0.05	8.1	707.75	0.899	1.033	0.1632	0.0131	0.57	0.884	0.0169	0.753	0.851	1979..2001		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular section Crump profile weir gauging predominantly rural, Chalk catchment with some artificial influences.Eel tiles installed.	Rectangular section Crump profile weir with downstream recorder. Replaced 33008 (Thetford Staunch) in 1968.	Weir subject to drowning and spills on rare occasions, with a very small amount of bypassing on left bank at high flows, but potential for further erosion. Subject to weed growth, on crest and in channel. One peak flow rating applied across period of record, not thought to account for out of bank flows.	Instrument hut vandalised in August 2000 and rebuilt in 2001/2002, peak flow data missing until August 2002. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Chalk with largely overlain with superficial deposits, mainly Boulder Clay. Predominantly arable with significant areas of forest and heathland, particularly in centre and E. Urban development (Thetford) just u/s of station.	Affected by gw abstraction/recharge and, since the late 1980s, low flows augmented with groundwater in drought conditions. Abstraction mainly for industry and agriculture. Some effluent returns.
33035	Ely Ouse at Denver Complex	3430.0	TF5877501011	558775.0	301011.0	52°35'01.4089"N 0°20'31.4552"E	52.58372	0.34207	Ely Ouse	Denver Complex	1.5	EA-EA	033735	33	1958-01-01		MIS				true	false	false	false	false	false	false	true	false	false	true	false	false	GEI	1958-10-01	2021-09-30	15.536	0.0	1959-07-01	2019-07-28	189.4	1969-12-15	1969-12-15	1.6	6.9	11.3	33.7	43.18	0.57	23011	22614	98.275				-1.3	6.1	34.4	84.9	165.5	597	587	0.1121	0.6459	0.1746	0.0014	0.0624	0.1013	0.6435	0.202	0.002	0.0477	0.8028	0.0146	0.1154	0.0672	0.0918	0.1002	0.3838	0.25	0.729	0.972	18.5	21.57	28.3	35.7	10.8	104.59	58.66	39	341	0.09	4.1	3580.76	6.841	0.752	0.311	0.0182	0.609	0.996	0.0255	0.787	0.988			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Complex structure gauging the whole of Ely Ouse catchment but with major gaps and inconsistencies in the flow record so the data should be used with great caution.	Three sluices: d/s sluice discharges flow to maintain level in Relief Channel; u/s sluice diverts surplus into Cut Off Channel; dividing sluice can raise level by 0.6m, reversing flow in the Cut Off Channel where it is abstracted at Blackdyke and diverted into the headwaters of Essex rivers (Ely Ouse/Essex Transfer Scheme). Larrinier fish pass installed.		Data should be used with great caution. In high floods gates are raised permitting channel to be used for original flood protection purpose. Complexity of the structure and its management is reflected in the homogeneity of the flow series - which has extensive periods with no data or zero flows.	Low lying catchment. Mixed geology with predominantly peat and alluvium on Fenland Plain and with Chalk overlain with Boulder Clay in higher regions to E and S. W is predominantly clay. High quality agricultural land.	Abstractions and diversion into the headwaters of Essex rivers (Ely Ouse/Essex Transfer Scheme).
33037	Bedford Ouse at Newport Pagnell Total	800.0	SP8766244233	487662.0	244233.0	52°05'22.2468"N 0°43'18.9883"W	52.08951	-0.72194	Bedford Ouse	Newport Pagnell Total	53.6	EA-EA	033037	33	1969-01-01		CC+C	71.0	43.0	6.4	true	false	false	false	false	false	false	true	false	false	false	false	false	PGEI	1969-10-13	2023-09-30	4.848	0.084	2003-10-18	2003-10-18	123.2	2020-12-24	2020-12-24	0.449	1.14	1.963	11.93	19.09	0.48	19711	19327	98.052				55.7	81.0	110.4	143.8	186.3	667	648	0.1267	0.4758	0.345	0.0003	0.0484	0.0529	0.5103	0.3707	0.0026	0.0587		0.6061	0.3939		0.0266		0.6299	0.3	0.437	0.943	29.6	39.69	30.2	38.4	10.7	67.27	39.09	111	109	0.09	55.8	801.94	0.881	0.927	0.1043	0.015	0.599	0.683	0.0237	0.745	0.726			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound site of main weir and mill weir gauging a catchment with mixed geology and mixed land use.	Compound site. Main weir is Compound Crump profile weir (29.3m broad), with central notch (3m broad) and downstream recorder. Separate, complementary Crump weir (3.7m broad) constructed in old mill throttle, 7m u/s of a double arch culvert. Flow record combines the main weir with a weir in the mill channel. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	The mill weir is subject to drowning at high flows and therefore affects the total flows too. Combined rating for both main and mill weirs, based on stage at main weir. This rating is not used for generation of modern flow data. Rating fits poorly to available gaugings at extreme high flows, however this is likely to be due to flow bypassing/channels becoming undefined.	Early peak flow data rejected due to uncertainty in stage data and rating. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Mixed geology with significant component of permeable rocks, much of which is overlain by Boulder Clay. Mixed land use, arable land and grassland, some forest and some urban development in lower catchment.	Influenced by gw abstraction/recharge and some effluent returns. Abstractions for PWS approx. 25km u/s, and abstractions within catchment for industry/agriculture.
33039	Bedford Ouse at Roxton	1660.0	TL1600453461	516004.0	253461.0	52°10'02.0386"N 0°18'19.0903"W	52.16723	-0.3053	Bedford Ouse	Roxton	15.7	EA-EA	033039	33	1972-01-01		FV		122.0	10.5	true	true	false	true	false	true	false	true	true	true	false	true	true	PGEI	1972-10-23	2023-09-30	11.547	0.211	1976-08-25	1976-08-25	175.3	2020-12-26	2020-12-26	2.19	4.04	6.41	27.1	41.7	0.57	18605	18469	99.269	1972-10-01		75.9	4.7	46.4	96.5	137.3	247.3	638	628	0.101	0.5133	0.2966	0.0002	0.0823	0.0576	0.539	0.3096	0.0057	0.0797	0.0667	0.3852	0.493	0.055	0.0593	0.0023	0.5446	0.28	0.447	0.939	30.0	40.85	29.9	37.8	10.8	152.87	97.75	95	77	0.06	16.1	1662.31	1.195	0.86	0.1348	0.0258	0.647	0.76	0.039	0.806	0.822			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir gauging a mixed land use catchment, mixed geology and with some artificial influences.	Flat V Crump profile weir (26m broad) with downstream recorder, situated immediately u/s of confluence with R. Ivel. Use in preference to Bedford (33002) if possible.	Drowns at very high flows (e.g. Easter Floods 1998), is influenced by timing of flood peak on R. Ivel, and can spill on rare occasions. Adjacent lock acts as an overspill in flood conditions. There is great uncertainty when levels go above 1.8m above crest. A single rating applied across period of record, however, there are multiple ratings that have been used in its history. Includes floodplain and non-modular flow. Assumes lock shut.	The POR maximum flow in April 1998 was extrapolated and subject to bypassing but thought to be a reasonable estimate in a contemporary report by WS Atkins. POR reprocessed in 2018, changes mainly in 2010 to 2013. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Mixed geology, including significant Clay and Greensand fractions, with about half of the catchment covered with Boulder Clay. Predominantly agricultural with substantial urban development (Milton Keynes and Bedford).	Regime influenced by groundwater abstraction/recharge. Some effluent returns. Significant surface water and gw abstractions for PWS, industry and agriculture. One of 3 stations used to calculate Offord flows to determine abstraction regime at Grafham Water.
33040	Rhee at Ashwell	2.01	TL2664540047	526645.0	240047.0	52°02'39.6962"N 0°09'17.2279"W	52.04436	-0.15479	Rhee	Ashwell	39.9	EA-EA	033040	33	1971-01-01		FL		1.1	14.1	true	false	false	false	false	false	false	true	false	false	false	false	false	RG	1965-11-05	2023-09-30	0.061	0.009	2006-09-24	2006-09-24	0.254	2001-02-12	2001-02-12	0.025	0.035	0.048	0.112	0.137	0.97	21149	20875	98.704				45.5	47.3	55.0	76.5	84.2			0.0664	0.482	0.112		0.3397	0.0436	0.4269	0.2865		0.2429	1.0				0.0564		0.3784														45.5	0.3												gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station close to the source of River Rhee with gw contributing area substantially larger than topographic area.	Trapezoidal standing wave flume in moulded glass reinforced plastic. Situated 0.5km d/s of source of R. Rhee.	Part of the Rhee groundwater support scheme, which triggers at 29.5 l/s to maintain flow. If flow cannot be maintained public water abstraction is stopped.	Runoff data unrealistic.	Predominantly Chalk catchment with agricultural land use. Gw contributing area exceeds topographic CA.	Flows influenced by large gw abstractions for PWS. Min. spring flow of 0.03 cumecs maintained by artificial gw recharge for conservation purposes.
33044	Thet at Bridgham	277.8	TL9568185495	595681.0	285495.0	52°25'56.6300"N 0°52'37.2130"E	52.4324	0.877	Thet	Bridgham	14.8	EA-EA	033044	33	1973-01-01		C		10.0	14.9	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1967-06-01	2023-09-30	1.667	0.118	1976-08-26	1976-08-27	18.94	2020-12-26	2020-12-26	0.368	0.715	1.15	3.52	4.67	0.73	20576	20572	99.981	1697-01-01		7.92	14.8	26.9	39.5	53.1	71.3	640	620	0.1424	0.6476	0.1682		0.0409	0.1217	0.6006	0.2444	0.0018	0.0277	1.0				0.0496		0.7916	0.31	0.681	0.942	13.2	25.67	28.1	35.2	11.0	34.06	18.33	40	228	0.09	14.8	274.99	1.041	1.0	0.1991	0.013	0.589	0.999	0.0127	0.75	0.974			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a Chalk rural catchment with some artificial influences, station reconstructed in 1979.	Crump profile weir, 6m broad. Prior to Oct 1979, broad-crested weir (crest: 7.4m), situated under double-arch bridge.	Two peak flow ratings applied across period of record, the most recent is valid from October-1979. Current rating only reliable to bankfull. Dredging increased modular limit. Theoretical rating for original weir confirmed by c/m measurements. Part of the Thet-Little Ouse groundwater support scheme, which triggers at 350 l/s to maintain flow. These trigger flows apply when the scheme is being used as a river support scheme for water users (not for Ely Ouse to Essex Transfer Scheme). The amount pumped in any one season is initially limited to 3 per cent of the annual licenced quantity of the Thet-Little Ouse scheme.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Chalk with large Boulder Clay cover. Rural catchment, arable with some forest and grassland, several small towns.	Regime influenced by groundwater abstraction/recharge. Abstractions for industry and agriculture. Some effluent returns.
33045	Wittle at Quidenham	28.3	TM0276387794	602763.0	287794.0	52°27'01.6519"N 0°58'56.7211"E	52.45046	0.98242	Wittle	Quidenham	23.8	EA-EA	033045	33	1973-01-01		CB		2.2	32.4	true	true	false	true	false	false	false	true	false	false	false	false	false	GI	1967-05-09	2023-09-30	0.136	0.0	1976-08-11	1992-10-07	3.25	1968-09-16	1968-09-16	0.017	0.046	0.077	0.307	0.44	0.65	20599	20586	99.937	1967-05-09		1.05	24.3	30.0	44.0	51.9	54.9	627	608	0.0757	0.7827	0.1092		0.0307	0.0603	0.7425	0.1744		0.0198	1.0				0.0158		0.7694	0.31	0.534	0.974	15.0	32.72	27.6	34.0	11.0	9.66	4.67	42	290	0.22	24.3	27.45	0.859	1.079	0.1774	0.0119	0.549	0.88	0.0105	0.645	0.876	1993..2014		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir gauging a Chalk catchment with large Boulder Clay overlay and predominantly arable land use. Flows are heavily affected by artificial influences.	Compound broad-crested weir (crest 3m), with central notch separated by splitter plates; situated under a road bridge.	No out of bank flow rating and weir known to drown during high flows which is not accounted for. Road embankment prevents bypassing. One rating applied across period of record. Theoretical rating modified by current meter measurements suitable to 0.64m.	Weir drowned in 1968 floods. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly Chalk largely overlain with Boulder Clay. Predominantly arable land.	Flow regime altered by pumping of two boreholes into the river u/s of Quidenham to support Ely Ouse to Essex Transfer Scheme (abstraction point at Hockwold on the Little Ouse). This can lead to artifically raised flows during the summer. Other abstractions in the catchment.
33046	Thet at Redbridge	145.3	TL9961592300	599615.0	292300.0	52°29'31.4616"N 0°56'19.8923"E	52.49207	0.93886	Thet	Redbridge	20.1	EA-EA	033046	33	1973-01-01		C	14.6	4.0	23.8	true	true	false	true	false	false	false	false	false	false	false	false	false	GI	1967-02-14	2023-09-30	1.167	0.025	1976-08-25	1976-08-25	18.04	1968-09-17	1968-09-17	0.143	0.317	0.593	2.654	4.39	0.61	20683	20541	99.313	1967-02-01		8.05	20.5	31.3	44.0	56.2	71.3	658	624	0.084	0.7256	0.1451		0.0449	0.0773	0.6563	0.2285	0.0021	0.0335	1.0				0.0212		0.9788	0.31	0.581	0.946	12.5	32.23	28.2	35.5	11.1	21.77	10.63	44	215	0.17	22.0	143.43	1.03	0.994	0.2034	0.0168	0.613	0.9	0.0163	0.783	0.864			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile gauging a Chalk catchment largely overlain with Boulder Clay and with predominantly agricultural land use, some artificial influences.	Crump profile weir, 4m broad. Ultrasonic flow gauge (sidelooker) installed in 2012 to measure non-modular flows more accurately.	Theoretical rating confirmed by current metering to structure full, thereafter rating allows for drowning and spilling, but there is significant scatter in gaugings beyond 0.3m. One rating applied across period of record. Since 2007 there has been an increase in the frequency of occurrence of non-modular flows, and since 2013 this station has been non-modular or drowned 90% of the time. This is thought to be caused by changes in land use downstream affecting downstream water levels. An ultrasonic flow gauge was installed in 2012. In modular flow conditions flows are calculated with the conventional rating, in non-modular conditions flows are calculated from the index-velocity rating based on the measurements of the ultrasonic flow gauge.	Sept 1968 flooded entire area under water, maximum POR level recorded as 17.5cumecs, flow extrapolated as the river was out of bank. GDF and HIF POR updated in 2014. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Chalk largely overlain with Boulder Clay. Agricultural land use, predominantly arable.	Gw abstractions for PWS and industry; surface water abstractions for spray irrigation.
33048	Larling Brook at Stonebridge	21.4	TL9279190686	592791.0	290686.0	52°28'48.1188"N 0°50'15.1649"E	52.48003	0.83755	Larling Brook	Stonebridge	24.5	EA-EA	033048	33	1973-01-01	2000-11-03	FL		1.0	13.5	false	true	false	true	false	false	false	false	false	false	false	false	false	GI																			1969-06-24	2000-11-01	0.318	24.9	34.5	38.6	43.8	55.1	604	635	0.2794	0.3612	0.333		0.023	0.2195	0.3491	0.4018	0.0026	0.015	1.0				0.216		0.4041	0.24	0.694	0.907	8.8	9.61	29.4	36.9	11.2	8.77	5.44	39	111	0.13	25.0	21.99	1.114	0.976	0.2331	0.0028	0.003		0.0033			1980..1993		cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Small concrete flume producing poor flow record because of permanent drowning. Station closed 2000.	A concrete flume of triangular cross-section with 1:1.5 side slopes, depth 0.8m. Station closed 2000.	Flume is permanently drowned: record very poor. Theoretical rating for in bank flows only applied across period of record.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Geology comprises Chalk overlain by glacial sand and gravel. Land use - rural, largely non arable.	Influenced by gw abstraction/recharge. Abstraction for agriculture/industry.
33049	Stanford Water at Buckenham Tofts	43.5	TL8340795285	583407.0	295285.0	52°31'28.4279"N 0°42'07.4296"E	52.52456	0.70206	Stanford Water	Buckenham Tofts	14.5	EA-EA	033085	33	1973-01-01	1977-12-31	B		1.3		true	true	false	true	false	false	false	false	false	false	false	false	false	N	1973-01-01	1980-09-30	0.265	0.066	1980-09-18	1980-09-18	0.953	1974-11-21	1974-11-21	0.114	0.164	0.216	0.499	0.578	0.89	2830	2830	100.0	1967-01-01	1981-01-01	0.788	15.5	27.0	39.9	50.6	61.2	635	645	0.2558	0.2796	0.4429		0.0218	0.2221	0.2555	0.5038	0.0058	0.0075	1.0				0.0032		0.8689	0.31	0.853	0.915	12.9	16.31	28.2	35.7	11.1	18.15	9.54	39	203	0.16	15.5	46.45	0.792	1.062	0.1649	0.0038			0.0075	0.775	1.366			gdf;gmf;cmr;cdr;cdr-d;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Discontinued station situated between two lakes used to measure discharge from pilot groundwater scheme in a Chalk catchment overlain by Boulder Clay, nearly natural flow at Q95.	Site used pre-existing broad-crested weir between two small lakes. Station was designed to measure discharge from pilot groundwater scheme area, although is largely natural. Lake outlet is at TL 834 953, joining Wissey 0.5 miles downstream of station. Punch tape recorder at upstream face introduced in Jan 1973. The recorder measured the level of the lake, and runoff of whole catchment drained to the lake, hence catchment area is calculated to the outlet. Watercourse is also referred to as Buckenham Tofts Stream.	Two ratings applied across period of record, the most recent is valid from October-1973.		Chalk overlain by Boulder Clay with some gravel and alluvium in the valley. Predominantly impervious.	Natural to within 10% at Q95.
33050	Snail at Fordham	60.6	TL6319770227	563197.0	270227.0	52°18'21.2796"N 0°23'32.0840"E	52.30591	0.39225	Snail	Fordham	9.7	EA-EA	033050	33	1974-01-01		FV		7.8	21.4	true	true	true	true	false	false	false	true	false	false	false	false	false	GI	1960-07-15	2023-09-30	0.283	0.048	1992-08-06	1992-08-06	2.28	2003-01-02	2003-01-02	0.103	0.185	0.248	0.473	0.567	0.88	23088	20787	90.034	1974-10-01		1.351	8.9	17.0	72.1	106.3	118.2	589	577	0.0886	0.3352	0.4818		0.0922	0.0827	0.3294	0.494		0.0937	1.0				0.1528		0.2658	0.26	0.738	1.0	27.8	20.59	30.9	37.7	10.9	20.28	11.85	65	323	0.38	9.3	57.88	0.606	0.635	0.1018	0.0361	0.609	0.872	0.0457	0.757	0.816			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump (with a side weir in 1974-1985) gauging a predominantly rural and predominantly Chalk catchment with significant artificial influences.	Flat V Crump profile weir (Fordham No1 mill main station), 4m broad. From Oct 1974, a subsidiary Crump profile weir (Fordham No2 side stream station), 0.7m broad, measured bypass channel discharge. Flows were combined into single series. Side weir was removed in Dec 1984 and main weir rating adjusted to compensate (flows increased by 2%).	One rating applied across period of record, valid to modular limit. Flows prior to 1984 were calculated using tables and adding together flow at the main and side weir. Side weir was removed in Dec 1984 and main weir rating adjusted to compensate (flows increased by 2%). Part of the Lodes-Granta groundwater support scheme, operated according to site conditions.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Predominantly Chalk covered by Boulder Clay in S part and containing some river terrace deposits. Land use largely rural with limited urbanised development (Newmarket).	Significant gw abstractions for PWS and surface water abstractions for spray irrigation.
33051	Cam at Chesterford	141.0	TL5052342645	550523.0	242645.0	52°03'42.2550"N 0°11'39.3792"E	52.06174	0.19427	Cam	Chesterford	35.2	EA-EA	033051	33	1964-01-01		CB	46.0	29.0	13.9	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1964-07-01	2023-09-30	0.576	0.072	1976-07-26	2011-10-04	11.0	1987-10-10	1987-10-10	0.154	0.266	0.368	1.07	1.7	0.66	21641	21071	97.366	1964-07-01		7.805	33.0	62.9	96.3	117.2	144.2	611	599	0.1026	0.6849	0.1432		0.0626	0.0823	0.749	0.1228	0.0009	0.0444	0.9549			0.0451	0.036		0.6426	0.29	0.576	0.993	40.5	31.24	29.1	36.7	10.8	22.76	12.81	93	29	0.04	33.0	140.02	0.406	0.973	0.0518	0.0188	0.602	0.839	0.0253	0.78	0.789			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir gauging a rural predominantly Chalk catchment largely overlain with Boulder Clay, significant artificial influences.	Compound broad-crested weir, 22.3m broad (in trapezoidal section) with central notch 3m broad, 0.23m deep. Previously called Chesterford Mill, and included millstream flow through old mill on the side of existing river channel.	Flow remains modular to 1.06m. One rating applied across period of record. Stage record before 14 May 1969 truncated at around 0.46m; peaks are therefore unknown over this period and the peak flow record present here starts on 14 May 1969. Prior to 1964, millstream flow was added to main weir rating using a rating table.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly Chalk largely overlain by Boulder Clay. Rural, predominantly arable land use.	Significant gw abstractions for PWS, with additional abstractions for industry/agriculture. Runoff increased by effluent returns.
33052	Swaffham Lode at Swaffham Bulbeck	36.4	TL5529862893	555298.0	262893.0	52°14'32.3408"N 0°16'23.2163"E	52.24232	0.27312	Swaffham Lode	Swaffham Bulbeck	3.1	EA-EA	033052	33	1963-01-01		C		2.6	32.0	true	true	false	true	false	false	false	true	false	false	false	false	false	GE	1963-01-01	2023-09-30	0.143	0.011	2022-12-03	2022-12-03	0.831	1993-10-13	1993-10-13	0.033	0.09	0.122	0.266	0.306	0.96	22188	21204	95.565	1963-01-01		0.333	4.4	11.1	39.9	102.0	123.1	571	567	0.0494	0.7991	0.1052		0.044	0.0386	0.8309	0.1104		0.0201	1.0				0.0448		0.134	0.26	0.841	0.998	25.6	13.7	29.0	35.6	10.6	12.22	6.82	30	292	0.39	4.4	33.13	2.668	0.599	0.2017	0.01	0.01	0.694	0.0121	0.744	0.69	1998		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir gauging a Chalk catchment with predominantly arable land use and significant artificial deposits.	Crump profile weir, 2.5m broad (wing wall height 1.6m), situated immediately u/s of road bridge. Prior to 1973 thin-plate weir, 1.45m broad. Also called Gutter Bridge.	Current theoretical rating fits well to gaugings. Two ratings applied across period of record, the most recent is valid from December-1973 when crump weir installed necessitating a change in rating. Part of the Lodes-Granta groundwater support scheme, operated according to site conditions.	Data between 2017-03-26 to 2017-04-09 marked as suspect; tree branches were found to be blocking the weir which caused an unnatural increase in flow. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Chalk with no appreciable superficial deposits. Predominantly arable land use. Catchment boundary manually digitised due to issue with IHDTM incorrectly delineating the upper catchment.	Regime influenced by gw abstraction/recharge. Significant groundwater abstractions for PWS. Runoff increased by effluent returns.
33053	Granta at Stapleford	114.0	TL4708451462	547084.0	251462.0	52°08'30.7475"N 0°08'52.6158"E	52.14187	0.14795	Granta	Stapleford	14.5	EA-EA	033053	33	1949-01-01		MIS		7.5	70.0	true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1949-02-16	2023-09-30	0.233	0.0	1949-08-09	2022-08-22	9.63	1960-12-21	1960-12-21	0.007	0.054	0.113	0.52	0.844	0.57	27255	26868	98.58				15.4	31.8	79.0	110.1	125.2	608	576	0.0672	0.764	0.112		0.0445	0.05	0.7634	0.1557	0.0002	0.0304	1.0				0.0375		0.5023	0.26	0.67	0.999	33.9	24.88	28.3	36.1	10.7	25.95	15.84	75	286	0.16	15.4	113.98	0.478	0.719	0.0768	0.0125	0.566	0.84	0.0132	0.688	0.811			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound weir gauging a gw dominated Chalk catchment with predominantly arable land use.	Compound weir with Crump notch (1.5m broad) and broad-crested flanks (3m broad) superseded - in 1981 - original thin-plate weir.		Suspect flows in Sept 2005 may be due to artificial damming upstream. Some flows estimated, only monthly means are considered valid. Flows between 16/10/2013 and 20/10/2013 may be affected by debris accumulation.	Chalk catchment with significant Boulder Clay cover. Land use dominated by arable agriculture.	High baseflow component; area of groundwater catchment is less than topographical catchment.
33054	Babingley at Castle Rising	47.7	TF6800725264	568007.0	325264.0	52°47'55.5852"N 0°29'26.0481"E	52.79877	0.49057	Babingley	Castle Rising	4.5	EA-EA	033054	33	1976-01-01		FV		11.0	67.0	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1976-07-13	2023-09-30	0.513	0.079	1996-08-09	1996-08-09	3.185	2021-02-06	2021-02-06	0.198	0.35	0.448	0.851	0.997	0.95	17246	17204	99.756	1976-07-01		1.129	10.5	17.6	56.1	81.0	93.4	694	686	0.1133	0.7073	0.1573	0.0008	0.0176	0.113	0.708	0.169	0.0009	0.0077	0.9107			0.0893	0.1107		0.2285	0.24	0.906	0.944	28.4	9.74	29.9	37.6	11.0	17.78	9.57	52	288	0.15	11.9	48.53	0.599	0.759	0.1184	0.0087	0.458	0.949	0.0053	0.597	0.961			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a river with high baseflow component. Catchment is predominantly Chalk bedrock and arable land.	Triangular profile Flat V Crump weir, 4.5m broad; level of wingwalls is 1.2m above crest.	Weir is subject to drowning. One rating applied from July 1976.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Predominantly Chalk, patchy cover of Boulder Clay, sands, and gravels. Predominantly arable land use. Gw catchment area exceeds topographic divide.	High baseflow catchment. Significant gw abstraction for PWS and industry/agriculture. Runoff increased by effluent returns.
33055	Granta at Babraham	98.7	TL5101850396	551018.0	250396.0	52°07'52.4535"N 0°12'17.7067"E	52.13124	0.20492	Granta	Babraham	23.2	EA-EA	033055	33	1976-01-01		FV		6.5	36.0	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1963-03-05	2023-09-30	0.246	0.0	1963-09-19	1976-11-25	11.8	2001-10-21	2001-10-21	0.012	0.058	0.119	0.546	0.903	0.55	22125	18928	85.55	1976-07-29		3.926	23.4	41.7	84.1	111.0	125.2	613	579	0.0695	0.7641	0.1096		0.0435	0.053	0.7843	0.1343	0.0002	0.0278	1.0				0.019		0.5465	0.26	0.638	0.999	35.6	26.96	28.3	36.1	10.7	21.08	12.4	80	297	0.15	23.4	101.97	0.405	0.792	0.0615	0.0116	0.542	0.841	0.012	0.688	0.815	1996		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Structure gauging a Chalk catchment with some superficial deposits, predominantly arable land use, and significant artificial influences.	Triangular profile Flat V weir, 8.3m broad; constructed on an old brick weir. Height of wing walls above crest - 0.6m. Also called Babraham Hall.	The station is drowned and bypassed at high flows. Current rating accounts for out of bank flow. However, from 12.94cumecs (0.95m) floodplain flow is over a wide area with great uncertainty in flows, and no gaugings above 0.4m to verify rating. Two ratings applied across period of record, the most recent is valid from January 1979. Part of the Lodes-Granta groundwater support scheme, which triggers at 26 l/s to maintain flow.	The POR maximum flow in Oct 2001 derived from peak flow measurements as 20.41 cumecs, but this is subject to considerable uncertainty - high proportion of overbank flows. Water year 1996/1997 rejected due to low confidence on whether AMAX occurred during a missing data period. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Chalk catchment with superficial deposits in headwater areas. Predominantly arable land use.	Regime influenced by gw abstraction/recharge. Significant gw abstractions for PWS and for industrial/agricultural uses. Runoff increased by effluent returns.
33056	Quy Water at Lode	76.4	TL5307862807	553078.0	262807.0	52°14'31.7962"N 0°14'26.1210"E	52.24217	0.24059	Quy Water	Lode	8.3	EA-EA	033056	33	1975-01-01		MIS		2.4	50.0	true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1965-01-01	2023-09-30	0.194	0.0	1965-06-07	1976-09-21	1.86	2001-02-08	2001-02-08	0.013	0.059	0.114	0.485	0.617	0.82	21457	20844	97.143				6.6	9.8	33.5	98.0	123.1	570	562	0.0419	0.7805	0.122		0.0446	0.0256	0.6916	0.2499	0.0007	0.0319	1.0				0.1031	0.014	0.1044	0.26	0.879	1.0	23.4	11.1	27.9	35.7	10.6	21.61	12.93	45	330	0.34	7.7	92.55	1.244	0.647	0.2014	0.0124	0.535	0.891	0.0195	0.781	0.83			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a rural, Chalk catchment with significant artificial influences.	Compound weir, 4.8m broad, with Crump profile centre section, 1m broad, 0.3m deep.	At flows greater than 0.32 cumecs flow occurs over broad-crested flanks between vertical side walls. Part of the Lodes-Granta groundwater support scheme, operated according to site conditions.	Pre-1975 data imprecise.	Chalk catchment, with patchy superficial deposits of Boulder Clay and sands and gravels. Rural, predominantly arable.	In dry weather stream leaks through bed into the fen and can dry up. Three large abstractions in catchment for PWS.
33057	Ouzel at Leighton Buzzard	119.0	SP9169024077	491690.0	224077.0	51°54'27.6980"N 0°40'06.7893"W	51.90769	-0.66855	Ouzel	Leighton Buzzard	80.9	EA-EA	033057	33	1976-01-01		C		7.0	8.6	true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1976-02-01	2023-09-30	0.844	0.102	1976-08-23	1976-08-23	20.32	2020-10-04	2020-10-04	0.211	0.349	0.51	1.68	2.591	0.64	17409	15604	89.632				81.4	89.3	106.7	143.8	247.3	664	643	0.0408	0.5952	0.2954		0.0639	0.0294	0.5682	0.3492	0.006	0.042	0.3884	0.0182	0.1327	0.4606	0.0795	0.0028	0.1146	0.31	0.524	0.991	33.1	37.61	31.1	38.6	10.0	17.66	9.56	114	334	0.11	81.4	122.39	0.885	0.847	0.1573	0.0151	0.588	1.085	0.0252	0.778	1.102			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Structure gauging a predominantly rural catchment with Chalk bedrock and with some artificial influences. Some flow diverted immediately u/s of station.	Crump profile weir (6m broad) in trapezoidal section (7.5m broad). Eel tiles and baffles added to structure in 2016. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Weir subject to drowning at flows of approx. 4 cumecs. Some flow is diverted into a gravel pit through a weir (1m broad) located immediately u/s of station and infiltrates into Lower Greensand aquifer. Addition of low cost baffles and eel tiles in 2016 has minimal impact on rating. Rating does not fit well to gaugings during non-modular conditions.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Land in lower reaches is gently undulating. Predominantly Chalk. Rural catchment draining from the Chiltern escarpment.	Regime influenced by gw abstraction/recharge. Mainly industrial/agricultural abstraction. Some effluent returns.
33058	Ouzel at Bletchley	215.0	SP8829332162	488293.0	232162.0	51°58'51.2910"N 0°42'57.0458"W	51.98091	-0.71585	Ouzel	Bletchley	66.2	EA-EA	033058	33	1978-01-01		FV		96.0	9.3	true	true	false	true	false	false	false	true	false	false	false	false	false	GEI	1978-05-03	2023-09-30	1.848	0.242	2019-08-31	2019-08-31	36.92	2020-10-04	2020-10-04	0.418	0.694	1.01	3.66	5.84	0.55	16587	16587	100.0			25.7	68.0	88.4	109.5	142.8	247.3	661	641	0.0512	0.5581	0.2987		0.0876	0.0467	0.5219	0.3536	0.009	0.0646	0.371	0.0236	0.1916	0.4137	0.0717	0.0015	0.3097	0.31	0.481	0.987	35.8	40.18	30.9	38.6	10.2	31.67	19.58	113	335	0.05	68.0	221.11	0.834	0.985	0.1276	0.0232	0.649	0.935	0.0386	0.814	0.9	2012..2022	2012-10-01..2023-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Constructed to measure flows just u/s of Milton Keys in a predominantly rural catchment with mixed geology, the station is located in a country park and is subject to vandalism.	Flat V weir, 10m broad. Constructed to measure flows just u/s of urban development (Milton Keynes). In a country park and subject to vandalism.	One rating applied across period of record. Floodplain flow accounted for, although not clear if accurate. Non modularity can occur as low as 0.8m, although rating only accounts for non-modularity at 1.3m.	Peak flows rejected after 2012, when gaugings deviate from rating. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Mixed geology - predominantly Upper and Lower Greensand, with some Chalk and Oxford Clay. Predominantly rural with mixed farming, Leighton Buzzard within catchment.	Flows augmented by effluent from Leighton Buzzard. Small gw abstractions.
33061	Shep at Fowlmere One	3.4	TL4021845980	540218.0	245980.0	52°05'39.8530"N 0°02'43.5458"E	52.0944	0.04543	Shep	Fowlmere One	20.1	EA-EA	033061	33	1978-01-01		C		0.5	40.0	true	false	false	false	false	false	false	true	false	false	false	false	false	G	1978-09-20	2023-09-30	0.075	0.001	1990-09-18	1997-06-12	0.718	2021-03-14	2021-03-14	0.019	0.044	0.06	0.14	0.173	0.94	16447	16368	99.52				17.5	21.2	25.2	31.8	34.3	563	541	0.1722	0.5732	0.2431		0.0114	0.1053	0.5343	0.3352		0.008	1.0							0.26	0.832	0.803	13.5	18.41	27.0	32.9	10.5	2.04	1.11	26	306	0.65	18.7	1.03	0.458	0.577	0.0903	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a gw fed stream, opened as part of gw scheme.	Crump weir 1.1m wide installed in Mar 1983. Replaced a rectangular thin-plate weir operational from 1978. Station opened as part of gw scheme.	Weed growth d/s may affect flow. Bridge invert immediately d/s would cause drowning above 0.4cumecs. Part of the Rhee groundwater support scheme, which triggers at combined flow of 65 l/s at Fowlmere 1 and 2 to maintain flow.	Levels from 1964. Mean annual runoff exceeds mean annual rainfall - this is under investigation (Jan 2008). Since 2014 occasional blockage on a grill covering a culvert just downstream of the site can result in unrealistically high flows which would be removed from the before loading to NRFA and infilled using linear infill where possible.	Very small, mainly gw fed, catchment draining from the Chalk. Rural, mainly arable with some grassland, marsh and woodland.
33062	Guilden Brook at Fowlmere Two	3.4	TL4030945563	540309.0	245563.0	52°05'26.2820"N 0°02'47.7073"E	52.09063	0.04659	Guilden Brook	Fowlmere Two	19.4	EA-EA	033062	33	1978-01-01		FL		1.5	15.0	true	false	false	false	false	false	false	true	false	false	false	false	false	G	1964-11-01	2023-09-30	0.051	0.003	2019-09-25	2019-09-27	0.441	2001-04-20	2001-04-20	0.018	0.031	0.037	0.091	0.123	0.97	21518	16955	78.794				21.7	22.3	23.8	25.8	27.0			0.1977	0.2319	0.5703			0.1179	0.2167	0.6654			1.0																				21.7	0.14												gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station opened as part of gw scheme to gauge a gw dominated stream.	Trapezoidal flume in trapezoidal, straight channel. Opened as part of gw scheme.	Part of the Rhee groundwater support scheme, which triggers at combined flow of 65 l/s at Fowlmere 1 and 2 to maintain flow.		Very small, mainly gw fed, catchment draining the Chalk. Rural, mainly arable, some grassland, orchard and deciduous woodland. High baseflow contribution - groundwater catchment area exceeds topographical area, resulting in unrealistic runoff.	Abstraction u/s for spray irrigation.
33063	Little Ouse at Knettishall	101.0	TL9549780786	595497.0	280786.0	52°23'24.6554"N 0°52'17.5853"E	52.39018	0.87155	Little Ouse	Knettishall	16.0	EA-EA	033063	33	1980-01-01		C		7.9	19.0	true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1980-05-14	2023-09-30	0.512	0.014	2022-09-04	2022-09-04	6.51	1987-08-27	1987-08-27	0.12	0.217	0.314	0.998	1.57	0.63	15845	15845	100.0				16.4	27.0	41.2	56.8	65.5	602	595	0.0787	0.7581	0.1289		0.0329	0.0659	0.6987	0.2104	0.0001	0.0219	1.0				0.0553		0.8291	0.28	0.596	0.982	17.2	29.13	27.3	34.6	10.7	21.98	11.75	41	351	0.15	16.4	103.33	0.834	0.938	0.1499	0.0102	0.412	0.821	0.0096	0.69	0.937			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a Chalk catchment with large Boulder Clay cover and predominantly arable land, flow record significantly affected by drowning and artificial influences.	Crump profile weir, 4.5m broad. Structure drowns above 3.35 cumecs. 3 wells constructed in 1987 to augment low flows. In 1979 replaced a broad crested weir called Knettishall Heath Weir located just u/s from current station. Removed from peak flows dataset in September 2020 (WINFAP Files v9).	Weir drowned regularly, particular in summer. Significant scatter in gaugings above 0.2m - removed from peak flow dataset for this reason. Rating is for the structure built in 1979 and has been applied to whole record.	The 1960 flood level of 17.9mAOD (1.5m stage) was recorded on the Knettishall Heath Weir drawing.	Chalk catchment with large Boulder Clay cover. Predominantly arable.	Minor industrial/agricultural abstractions and returns. 3 wells constructed in 1987 to augment low flows. Flow in summer 2022 potentially affected by groundwater pumping scheme.
33064	Whaddon Brook at Whaddon	16.0	TL3590246674	535902.0	246674.0	52°06'06.1744"N 0°01'02.1208"W	52.10172	-0.01726	Whaddon Brook	Whaddon	15.7	EA-EA	033064	33	1980-01-01		FL		0.5	12.5	true	false	false	false	false	false	false	true	false	false	false	false	false	GE	1980-10-09	2023-09-30	0.11	0.014	1997-10-05	1997-10-05	1.5	2003-01-02	2003-01-02	0.038	0.059	0.079	0.226	0.289	0.89	15697	15626	99.548				17.3	20.4	36.1	87.2	121.8	593	558	0.0387	0.5212	0.1783		0.2361	0.0196	0.6227	0.1086		0.2478	1.0							0.24	0.943	0.997	24.1	6.98	28.0	34.2	10.4	9.54	4.98	45	358	0.53	17.4	14.56	0.647	0.639	0.1492	0.0862	0.688	1.497	0.1171	0.871	1.464			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a Chalk catchment with significant artificial influences.	Pre-cast fibreglass flume set in concrete; long-crested flume crest 0.1m broad.	Part of the Rhee groundwater support scheme, operated according to site conditions.	Flow from 2014/11/20 to 2015/02/25 was likely non-modular. Flow from 2015/03/02 to 2015/06/15 may be affected by the Rhee Groundwater Support Scheme and flows during that period are higher than what could be expected based on nearby stations.	Chalk catchment used mainly for mixed farming but with significant built-up area (Royston).	Flows affected by effluent from Royston STW u/s of station.
33065	Hiz at Hitchin	11.9	TL1853129011	518531.0	229011.0	51°56'49.1145"N 0°16'36.6561"W	51.94698	-0.27685	Hiz	Hitchin	62.8	EA-EA	033065	33	1980-01-01		CC			50.0	true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1980-08-09	2023-09-30	0.031	0.0	1997-07-14	2019-12-02	0.303	2001-02-12	2001-02-12	0.003	0.013	0.018	0.068	0.104	0.86	15758	15311	97.163				61.6	77.9	98.3	154.3	172.0	648	621	0.096	0.6807	0.1518		0.0684	0.0906	0.6397	0.2016		0.0681	1.0				0.1127	0.124		0.3	0.968	1.0	58.0	5.1	29.7	36.3	10.5	7.41	3.75	107	54	0.39	61.8	12.03	0.242	0.724	0.0476	0.0332	0.594	0.478	0.036	0.905	0.528			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a small spring-fed stream with significant artificial influences.	Old concrete weir with crest reshaped by steel beam to form compound Crump profile, 6.2m wide; central notch 1m wide, 0.14m deep. Small spring fed stream flowing through Hitchin market place.	Part of the Thet-Little Ouse groundwater support scheme, which is triggered at Charlton Mill Pond.		Predominantly Chalk catchment with small amounts of sand, gravel and clay. Almost entirely arable land with only minor urban development.	Substantial abstractions for PWS. High baseflow - groundwater catchment area is less than the topographical area, resulting in notably low mean runoff. Local abstractions visible during March & April 2016.
33066	Granta at Linton	59.8	TL5714646348	557146.0	246348.0	52°05'35.3963"N 0°17'33.0153"E	52.09317	0.2925	Granta	Linton	40.2	EA-EA	033066	33	1981-01-01		CC		3.9	25.0	true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1981-11-13	2023-09-30	0.187	0.0	1990-10-10	2022-10-30	7.79	2001-10-21	2001-10-21	0.009	0.03	0.065	0.409	0.767	0.44	15297	15266	99.797				40.9	66.3	94.6	113.2	125.2	629	589	0.0756	0.7853	0.0912		0.0312	0.0635	0.815	0.1107	0.0001	0.0104	1.0						0.7411	0.26	0.51	1.0	35.9	35.5	28.5	36.1	10.8	11.44	6.71	92	282	0.11	40.9	61.61	0.341	0.926	0.0473	0.0079	0.479	1.029	0.0076	0.593	0.972			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a pump-supported stream draining from a rural catchment with some artificial influences.	Compound Crump Weir, 5.3m broad with 1.5m central crest.	Structure drowns when u/s water level exceeds about 0.46m. River is pump supported to maintain flow at approx. 0.03 cumecs; zero flows occur when pumps fail. Part of the Lodes-Granta groundwater support scheme.		Small Chalk catchment largely overlain with Boulder Clay. Land use is agricultural, predominantly arable land.	Some gw abstraction.
33068	Cheney Water at Gatley End	5.0	TL2964240965	529642.0	240965.0	52°03'06.9007"N 0°06'38.7482"W	52.05192	-0.11076	Cheney Water	Gatley End	42.7	EA-EA	033068	33	1982-01-01		C		0.1		true	false	false	false	false	false	false	false	false	false	false	false	false		1982-06-01	2023-09-30	0.015	0.0	1983-11-29	2023-09-30	0.092	2010-10-19	2010-10-19	0.0	0.004	0.01	0.036	0.045	0.91	15097	11347	75.161				47.2	48.5	54.2	72.7	77.9				1.0					0.9573	0.0427			1.0																				47.9	0.11												gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a spring fed pool in a very small catchment.	Crump weir, 0.3m broad. It dams a broad pool immediately u/s which is spring fed. The station was opened to monitor this spring as part of a gw scheme.	Only measures up to 0.073 cumecs (0.23 m), higher flows truncated. Part of the Rhee groundwater support scheme, which triggers at 0 l/s.	The spring did not flow at all throughout 1997.	Superficial deposits free Chalk catchment. Rural, mainly arable farming.	Flows are affected by gw abstraction. Flows are now normally supported by gw pumping (pumps failed in 1998).
33070	Lark at Fornham St Martin	110.2	TL8476667226	584766.0	267226.0	52°16'19.6863"N 0°42'23.7638"E	52.27214	0.7066	Lark	Fornham St Martin	26.2	EA-EA	033070	33	1985-09-01		C+2C	13.0		87.0	true	false	false	false	false	false	false	true	false	false	false	false	false		1985-08-05	2023-09-30	0.33	0.0	1991-09-03	1996-01-21	7.61	2003-01-02	2003-01-02	0.022	0.074	0.151	0.776	1.256	0.5	13936	13857	99.433				25.3	45.3	74.9	103.9	124.7	618	599	0.1036	0.6249	0.1547		0.1164	0.0832	0.6088	0.1957	0.0003	0.1098	1.0				0.0856		0.817	0.28	0.663	0.97	29.2	26.17	27.5	36.2	10.5	19.54	10.8	75	27	0.24	25.3	111.07	0.489	0.861	0.0749	0.043	0.67	0.512	0.0668	0.858	0.503			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Complex station located just d/s from Bury St Edmunds, gauging otherwise predominantly rural catchment.	Site consists of three parts: Central crump profile low flow weir, 2.57 m wide, set between flanks which are treated as a broad-crested weir 0.796 m wide (rb width 0.66 m, lb width 0.136 m, length of crest 1.30 m), and a side-weir for flood relief purposes, which consists of a crump weir 5.17 m wide in a bypass channel. Site located just d/s from Bury St Edmunds.			Predominantly rural catchment with Bury St Edmunds just u/s from the station.
34001	Yare at Colney	231.8	TG18230823	618230.0	308230.0	52°37'40.5585"N 1°13'23.0748"E	52.62793	1.22308	Yare	Colney	8.2	EA-EA	034001	34	1959-01-01		C B	19.0	19.0	9.1	true	true	false	true	false	false	false	true	false	false	true	false	false	GI	1959-10-01	2023-09-30	1.561	0.099	1991-09-18	1991-09-18	36.7	2020-12-25	2020-12-25	0.315	0.595	0.94	3.31	4.67	0.61	23376	23333	99.816	1958-01-01		13.3	6.9	29.0	46.3	61.8	84.6	666	635	0.0554	0.7285	0.1686		0.0447	0.0503	0.6763	0.2273	0.0006	0.0411	0.9991	0.0009			0.064		0.9358	0.31	0.528	0.971	18.5	35.34	28.8	36.1	11.2	40.16	23.13	46	67	0.1	6.9	228.81	0.849	1.028	0.1386	0.0215	0.624	0.878	0.0188	0.802	0.856	1957..1981		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Frequently bypassed structure gauging a rural, Chalk catchment with superficial deposits and with significant artificial influences.	A compound weir 11.9m wide reconstructed in Jan 1964 from single level broad-crested weir. The present structure has a Crump section 8.9m wide separated by a pier from a broad-crested weir at a lower level.	Mill sluices artificially regulate flow, but have little influence on flood flows. Frequent bypassing on the left bank. Road bridge built downstream in the late 1990s, after which all gaugings above 1m were taken which fit poorly to rating. One peak flow rating applied across period of record.	Groundwater river support scheme extensively used in 1974, 1976 and 1990s to augment low flows. Not used in 2018, so flows are much lower. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Topographical catchment exceeds contributing area (groundwater catchment), discrepancies along the south eastern boundary in the headwaters of the Blackwater and Tiffey. However the total estimated groundwater and surface water catchment areas are almost identical. No major changes during the period of record. Chalk catchment with superficial deposits, mainly Boulder Clay and alluvium - glacial till and some sand and gravel. Rural catchment, land use is predominantly arable.	Groundwater is abstracted for agricultural uses. Significant seasonal variations in abstractions due to the use of water for spray irrigation in the summer.
34002	Tas at Shotesham	146.5	TM2258399391	622583.0	299391.0	52°32'48.6133"N 1°16'52.8422"E	52.54684	1.28135	Tas	Shotesham	9.6	EA-EA	034002	34	1957-01-01		FV			15.8	true	false	false	false	false	false	false	true	true	true	true	false	true	GEI	1957-11-01	2023-09-30	0.752	0.079	1964-09-05	1964-09-05	42.2	1968-09-16	1968-09-16	0.175	0.303	0.44	1.62	2.33	0.59	24075	23689	98.397				9.4	29.8	45.6	54.6	71.4	617	610	0.0687	0.7087	0.1852		0.0374	0.0363	0.7101	0.2336	0.0004	0.0192	0.78	0.22			0.0008		0.9992	0.29	0.434	0.993	19.5	37.28	28.0	34.3	11.1	26.78	13.41	44	55	0.11	9.4	153.19	0.935	1.179	0.176	0.0194	0.528	0.86	0.0146	0.686	0.888			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Several times modified structure with poor rating in high flows and pre 1970 flows, gauging a rural, Chalk catchment overlain by till and with some artificial influences.	Originally a flume set between high rough walls bypassed at 14 cumecs. Reconstructed in 1970 as a Flat V Crump and a bypass channel with movable gates added in 1980 on the left bank, as part of Newton Flotman flood alleviation scheme.	Some high flows only partially gauged as water diverts around the station through the bypass channel. Bypass thought to cause more frequent drowning out. Bypass channel has not been successfully rated, due to inadequate records of gate position. Flood peaks derived assuming gate is fully open during flood conditions. No rating found applicable for the pre-1970 flume. Source of present rating unknown.	Magnitude of flood peak in Sept 1968 is uncertain owing to bypassing, but was undoubtedly an exceptional event generated by 80-100mm rainfall. Peaks 25-28/04/1981 and 02-04/05/1981 suspect due to instrument fault. Period of 5 May- 25 August 1986 has been deleted due to anomalously low flows - probable stage shift. Data for Jan-Apr 1989 are missing due to instrument fault.	Groundwater catchment thought to be 24% smaller than the surface catchment (differences mainly in E). Predominantly Chalk, almost entirely overlain with drift, mainly Boulder Clay. Rural catchment, mainly arable. No major changes during the period of record.	Runoff reduced by groundwater abstractions for public water supply and agriculture. Runoff increased by effluent returns.
34003	Bure at Ingworth	164.7	TG1921429614	619214.0	329614.0	52°49'10.0621"N 1°15'06.6562"E	52.81946	1.25185	Bure	Ingworth	12.2	EA-EA	034003	34	1959-01-01		MIS	4.3		8.6	true	true	false	true	false	false	false	true	false	false	true	false	false	GI	1959-06-01	2023-09-30	1.143	0.383	1976-07-08	1976-08-24	11.8	1987-08-26	1987-08-26	0.575	0.82	0.998	1.78	2.16	0.83	23498	23498	100.0	1959-06-08		5.258	12.4	30.5	48.4	77.5	104.5	687	669	0.1128	0.7496	0.1171		0.0194	0.0901	0.7015	0.1961	0.0002	0.0104	0.4123	0.5877			0.4261		0.571	0.31	0.778	0.974	23.4	20.83	29.6	37.1	11.3	26.18	13.58	51	131	0.24	12.3	161.4	0.495	0.967	0.0851	0.0124	0.421	1.038	0.0067	0.604	0.973			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Structure gauging a predominantly arable catchment with mixed geology and with some artificial influences and significant seasonal variation in flow.	Two ogee profile weirs beneath bridge arches. Wingwall height not known.	Arches bypassed (through low spots in the bank about 400m u/s) at 4.3 cumecs, but station maintains modularity. Occasionally drowns owing to weed and reed growth - some contention with coincident SSSI regime means that weed clearance is only done annually. One peak flow rating applied across period of record. Good fit to available gaugings.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Mixed Clay and Chalk geology, overlain with superficial deposits of Boulder Clay and glacial sands and gravels. Agricultural land use, predominantly arable.	Important seasonal variation in flow. Runoff influenced by groundwater abstraction/recharge. Limited ground and surface water abstractions with some returns from public and agricultural uses.
34004	Wensum at Costessey Mill	570.9	TG1768212740	617682.0	312740.0	52°40'07.0765"N 1°13'04.6779"E	52.66863	1.21797	Wensum	Costessey Mill	5.2	EA-EA	034004	34	1960-01-01		MIS	18.8			true	false	false	false	false	false	false	true	true	false	true	false	false	GI	1960-02-01	2023-09-30	4.093	0.298	1991-08-07	1991-08-07	36.8	1981-04-28	1981-04-28	1.36	2.36	3.26	7.5	9.65	0.76	23253	22990	98.869				5.3	29.4	50.0	71.1	96.1	670	672	0.0898	0.7402	0.1359	0.0003	0.0306	0.0846	0.647	0.2327	0.0014	0.0291	0.9341	0.0659			0.2055		0.7348	0.3	0.69	0.93	20.5	26.16	29.8	37.9	11.2	79.06	44.15	50	80	0.11	5.4	559.7	0.851	0.989	0.1299	0.0177	0.589	0.964	0.0134	0.75	0.907			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Complex structure with crump weirs and gates gauging a rural, predominantly Chalk catchment overlain by deposits, with moderate artificial influences.	Complex structure comprising 30m Crump weir in main channel (crescent shape in plan view, but standard Crump profile slopes); the parallel mill channel has tilting gate and 1.5m wide Crump weir. Also artificial regulation by sluice action at Taversham. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	The tilting gate is moved between three positions to maintain stable water level upstream and to maintain level through the mill race, and was fully automated in 1998. At 20-25 cumecs, which does not occur frequently, bypassed further upstream on the left bank. Multiple ratings apply across period of record depending on gate settings.	Very low flows in July 2006 believed to be due to over-abstraction.	Predominantly Chalk catchment almost entirely overlain with superficial deposits, mainly Boulder Clay but with sands and gravels in valley bottoms. Rural, predominantly arable farming. No major changes during the period of record.	Moderate surface and gw abstractions, influential in low flow years. Runoff influenced by groundwater abstraction/recharge and surface water abstraction for Norwich. Mill sluices artificially regulate water levels, but have little influence on flood flows.
34005	Tud at Costessey Park	73.2	TG1696611275	616966.0	311275.0	52°39'20.7717"N 1°12'23.1537"E	52.65577	1.20643	Tud	Costessey Park	9.4	EA-EA	034005	34	1961-01-01		CFL			16.4	true	true	true	true	false	false	false	true	false	false	false	false	false	GI	1961-06-01	2023-09-30	0.372	0.001	2002-08-02	2002-08-04	8.84	1981-04-26	1981-04-26	0.096	0.175	0.256	0.745	1.02	0.65	22767	22644	99.46	1961-06-07		3.11	10.0	34.5	47.4	57.7	81.9	644	649	0.0865	0.6821	0.1665		0.0595	0.0822	0.6242	0.2182	0.0034	0.0714	1.0				0.1083		0.89	0.31	0.598	0.973	20.3	32.65	28.6	36.1	11.3	25.48	14.34	46	63	0.15	10.2	72.11	0.867	1.095	0.1578	0.0313	0.679	1.215	0.0288	0.793	1.304	1983		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Structure gauging a Chalk catchment with gw catchment smaller than topographical catchment, some artificial influences.	Four trapezoidal standing-wave flumes under a road bridge.	Dam boards placed across the two outer arches to increase the sensitivity of low flow measurements. Dam boards are only used at very low flows, less than 1 cumec. Thought to be drowned above 10.5 cumecs (April 1981 flood). The rating is valid when all flumes are open. An alternative rating is used when dam boards are placed across the two outer arches for very low flows. Early part of the record affected by a mill structure u/s.	Thought to be drowned above 10.5 cumecs during April 1981 flood. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Gw catchment is smaller than the topographical catchment with consequent losses to adjacent catchments and low annual gauged runoff. Chalk catchment with superficial deposits, predominantly Boulder Clay, also sands and gravels and alluvium. Rural catchment with mixed farming, mostly arable.	Runoff influenced by groundwater abstraction/recharge, reduced by industrial/agricultural abstraction.
34006	Waveney at Needham Mill	370.0	TM2290681137	622906.0	281137.0	52°22'58.3353"N 1°16'26.0799"E	52.38287	1.27391	Waveney	Needham Mill	16.5	EA-EA	034206	34	1963-01-01		CC	23.0			true	true	false	true	false	true	false	true	true	false	false	true	false	RI	1963-12-01	2023-09-30	1.741	0.157	2022-06-27	2022-06-27	89.8	1968-09-16	1968-09-16	0.261	0.459	0.721	4.11	6.72	0.46	21854	21854	100.0	1963-09-30		21.697	16.0	31.2	47.5	59.8	65.3	604	594	0.0529	0.7754	0.1371		0.0345	0.04	0.7437	0.1886	0.0002	0.0265	0.4222	0.5778			0.0783		0.9217	0.28	0.422	0.998	15.9	36.6	27.3	35.4	10.8	35.27	20.96	46	44	0.06	16.0	376.07	1.017	1.036	0.1806	0.0129	0.521	0.937	0.0137	0.706	0.948	1985		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Main weir and side weir gauging a rural catchment with clay and Chalk bedrock, weed growth and u/s sluice action apparent in flow record.	Compound Crump weir 8.5m wide in main channel with single crested Crump in mill bypass.	Suffers from weed growth problems. Sluice action at mill 2.4km u/s is infrequent but evident in flow records; sluice rarely open after 1985. Multiple ratings applied to period of record. Rating shapes comparable to bankfull/QMED before they diverge. Reasonable fit to gaugings. Rating takes account of both the main weir and the mill bypass. Flows between 16.8m3/s and 24.4m3/s are non-modular and flows over 25.5m3/s are non-modular with some bypassing of the weir accounted for by modelling.	Record affected by the Waveney Groundwater Scheme between 1975 and 1979. Rating reviewed in 2022 and data reprocessed from 1980. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Clay and Chalk largely overlain with Boulder Clay. Rural, predominantly arable land.	Record affected by the Waveney Groundwater Scheme between 1975 and 1979 and during some summers e.g. Jun-Sep 2022. Rating reviewed in 2022 and data reprocessed from 1980.
34007	Dove at Oakley Park	133.9	TM1752077092	617520.0	277092.0	52°20'55.4143"N 1°11'32.2250"E	52.34873	1.19228	Dove	Oakley Park	21.0	EA-EA	034007	34	1966-01-01		CC	23.6		10.1	true	true	false	true	false	false	false	true	false	false	false	false	false	RGI	1966-07-01	2023-09-30	0.688	0.093	2018-09-15	2018-09-15	32.7	1968-09-16	1968-09-16	0.144	0.204	0.288	1.44	2.42	0.46	20911	20780	99.374	1966-06-21		12.4	21.7	38.9	52.0	61.2	65.3	601	585	0.047	0.8019	0.1171		0.034	0.038	0.7789	0.1556	0.0001	0.0266	0.1522	0.8478			0.0714		0.9286	0.28	0.427	0.996	15.2	37.28	26.5	34.8	10.6	25.73	14.37	51	39	0.15	21.7	139.37	0.961	1.054	0.1802	0.0101	0.404	1.055	0.012	0.643	1.005	1978..1988		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a rural, Chalk and clay catchment with Boulder Clay cover, significant gw abstraction in 1975-1979 due to the Waveney Groundwater Scheme.	Compound Crump weir with low flow notch and crest tapping.	Non-modular at 13 cumecs and bypassed at 18 cumecs. Obstructions on the weir have occasionally led to erroneously high summer flows. Good fit to gaugings below 0.7m The SG value of 1.74m is believed theoretical and the FQ of 38.6 cumecs is an estimate (including the bypass), not a gauging. One rating applied across period of record. Station was reviewed in 2014 but rating was not changed because no method for estimating non-modular flows was found.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected (pre-2007 only, affecting suitability for trend analysis), but in some cases can be below the daily flow as these are not corrected. Three suspect events in spring 2015 (2015/03/26, 2015/03/26, 2015/04/26, 2015/04/27, 2015/05/25, 2015/05/26) which also affect HIF for those months. Occasionally suffers from drops in level due to operation of upstream mill, identified by a large spike in GDF followed by a large drop. Examples of mill effects on 15/08/2016 and 15/09/2018. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Chalk and clay catchment, largely overlain with Boulder Clay. Predominately arable land.	Records affected by the Waveney Groundwater Scheme between 1975 and 1979 and during some summers e.g. Jun-Sep 2022. Groundwater abstractions and effluent returns have a minor net effect on flows. Occasional effects from operation of upstream mill.
34008	Ant at Honing Lock	49.3	TG3311927041	633119.0	327041.0	52°47'25.9679"N 1°27'21.5232"E	52.79055	1.45598	Ant	Honing Lock	1.9	EA-EA	034008	34	1966-01-01		C			19.9	true	true	false	true	false	false	false	true	false	false	false	false	false	PGI	1966-06-01	2023-09-30	0.296	0.05	1996-08-21	1996-08-22	2.6	1981-04-26	1981-04-26	0.15	0.23	0.278	0.43	0.499	0.85	20941	20387	97.354	1966-05-20		0.929	9.0	15.3	32.3	46.5	63.9	647	632	0.087	0.6798	0.1304		0.1024	0.0687	0.6678	0.175	0.0012	0.0864		1.0			0.3393		0.657	0.31	0.806	0.978	21.4	19.04	29.8	38.5	11.4	18.1	10.38	31	121	0.2	9.0	44.43	0.603	0.809	0.124	0.0437	0.752	1.135	0.05	0.835	1.089	1966..1996	1966-10-01..1992-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Structure utilising the fall of an old navigation lock, gauging a rural catchment with sand, gravel, and loam, some flow bypasses the station through a marsh u/s of station.	Crump type weir utilising the fall of an old navigation lock. No chart back up: limited space within kiosk.	One rating applied across period of record.	Logger failure Jan 1998 so no DMFs. Suspect data in summer 1996. Pre-digital data peak flow data are rejected as stage cannot be reprocessed following a datum change pre-1992. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). No data between 17 May 2019 to 3 July 2019 due to due to weir works to restore upstream levels.	Predominantly rural catchment of approximately half sand and gravel and half loam. Immediately u/s is a large marshy area with dense weed growth from which some flow bypasses the station.	Groundwater abstractions for public water supply moderately reduce the natural runoff.
34010	Waveney at Billingford Bridge	149.4	TM1678778241	616787.0	278241.0	52°21'33.5879"N 1°10'56.2150"E	52.35933	1.18228	Waveney	Billingford Bridge	20.3	EA-EA	034010	34	1968-01-01		MIS	7.5		33.1	true	false	false	false	false	false	false	true	false	false	false	false	false	REI	1968-04-01	2023-09-30	0.735	0.011	1990-08-28	1990-08-28	52.8	1968-09-16	1968-09-16	0.075	0.168	0.305	1.66	2.66	0.46	20271	20114	99.225				20.9	28.7	42.1	52.3	61.0	606	603	0.0569	0.7312	0.1723		0.0394	0.0396	0.6984	0.2258	0.0003	0.0342	0.9061	0.0939			0.0962		0.9038	0.29	0.44	0.999	15.2	35.1	27.6	35.1	10.9	20.92	12.24	41	147	0.09	21.0	150.12	1.0	1.017	0.1837	0.0193	0.605	0.773	0.0182	0.779	0.711			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound site where bypassing and drowning can affect flows, gauging a Chalk catchment with Boulder Clay overlay, effects of Waveney Groundwater Scheme significant in 1975-1979.	Compound site of two structures located u/s of two bridge arches: a compound Crump with low flow notch and a simple Crump with lifting gate to retain higher summer levels. Removed from peak flows dataset in May 2016 (WINFAP Files v4).	Flows above 1.66 cumecs are only available when the structure gate is open, otherwise they cannot be calculated. Bypassing occurs at 6.4 cumecs, drowning can result from sluice action at Hoxne Mill (manual correction applied). The compound weir is insensitive and suffers occasional drowning due to d/s weed growth. Summer flows (e.g. July 2008) on the simple crump weir can be affected by partial gate movements. Partial gate movements due to maintenance are not logged and are unrated, resulting in erroneous data in the flow record.	Affected by Waveney Groundwater Scheme between 1975 and 1979. Crest tapping blocked 25/11/2008-05/12/2008, estimation of hydrograph peak not possible. July 2008 flows on the simple crump weir affected by partial gate movements. Drop out in flows between 30th October 2016 and 6th November 2016 suspect, likely result of partial gate operation for maintenance.	Chalk catchment largely overlain with Boulder Clay, supporting mixed agriculture, predominantly arable land.	Runoff reduced by industrial/agricultural gw abstraction and by effluent returns.
34011	Wensum at Fakenham	161.9	TF9193629335	591936.0	329335.0	52°49'38.4629"N 0°50'50.7982"E	52.82735	0.84744	Wensum	Fakenham	33.7	EA-EA	034011	34	1966-01-01		MIS	11.0		13.2	true	false	false	false	false	true	true	false	true	true	false	true	true	GI	1966-05-01	2023-09-30	0.857	0.118	1991-09-16	1991-09-16	8.79	1977-02-12	1977-02-12	0.247	0.486	0.681	1.64	1.99	0.82	20972	20802	99.189				33.0	46.6	62.7	75.5	92.8	701	698	0.0701	0.7742	0.13	0.0005	0.0247	0.065	0.7144	0.1911	0.0002	0.0287	1.0				0.126		0.7742	0.29	0.857	0.993	16.8	14.39	30.4	38.6	11.1	26.8	14.7	62	50	0.12	33.0	162.93	0.735	0.995	0.1425	0.0172	0.546	0.818	0.0108	0.706	0.754			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a Chalk catchment with mainly permeable soil types that contribute to muted flood response, minimal gw extractions.	Compound Crump with low flow notch, immediately u/s of Fakenham Mill. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	An automated lifting gate for retaining summer levels acts as a sharp-crested weir. Gate is raised in winter to pass high flows. Unlikely to be bypassed apart from in exceptional events, not known to go non modular within operating range, theoretically rated. There are two ratings at the site, one for gate open and one for gate closed. When gate is up (open) there appears to be a small underestimation of flow by the rating, probably due to small amount of bypass at structure.	No data for 17/01/2020 to 02/03/2020 due to manual gate movements. Unable to calculate flow when gate is manually operated.	Low-lying Chalk catchment largely overlain with Boulder Clay and some sands and gravels. Mainly permeable soil types. Predominantly arable.	Permeable soils contribute to muted flood response. Groundwater abstractions have a minimal impact on runoff.
34012	Burn at Burnham Overy	80.0	TF8419842742	584198.0	342742.0	52°57'01.5517"N 0°44'25.1561"E	52.95043	0.74032	Burn	Burnham Overy	2.6	EA-EA	034012	34	1966-01-01		CC	2.8		7.6	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1966-07-01	2023-09-30	0.315	0.054	1989-09-19	1989-09-19	1.5	2021-02-18	2021-02-18	0.104	0.196	0.267	0.545	0.679	0.96	20911	20905	99.971	1966-07-01		1.02	5.0	21.9	51.9	64.5	82.5	676	668	0.0376	0.8352	0.1154		0.0099	0.0325	0.795	0.1559	0.0005	0.0161	1.0				0.1141		0.6039	0.3	0.965	0.997	26.8	6.29	30.9	38.9	11.1	17.01	8.52	48	25	0.13	5.1	83.87	0.451	1.106	0.0983	0.0116	0.509	0.733	0.0049					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a gw influenced, rural catchment with Chalk bedrock overlain with superficial deposits and with only minor artificial influences, station is bypassed at high flows.	Compound Crump weir with three sections - central low flow crest 0.6m, flanked by two crests 1.2m wide each.	Bypasses at 2.3 cumecs. Can be affected by mill operations c 50m u/s. One rating applied across period of record.	Low flows in summer 2005 and 2008 affected by u/s mill operation. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly Boulder Clay with some sand and gravel, underlying Chalk exposed in the valleys. Rural, predominantly arable.	Gw-influenced regime, annual hydrographs reflect high baseflow component from the Chalk aquifer. Industrial/agricultural abstraction reduces natural runoff but impacts are minimal. Effluent returns increase runoff and may produce a minor net import from outside the catchment.
34014	Wensum at Swanton Morley Total	397.8	TG0208518419	602085.0	318419.0	52°43'32.3372"N 0°59'28.0865"E	52.72565	0.99114	Wensum	Swanton Morley Total	19.1	EA-EA	034014	34	1969-01-01		CC			7.0	true	false	false	false	false	false	false	true	false	true	false	false	true	GEI	1969-10-01	2023-09-30	2.743	0.398	1991-08-31	1991-08-31	31.4	1981-04-27	1981-04-27	0.934	1.51	2.12	5.12	6.59	0.75	19723	19648	99.62				17.5	38.4	57.1	73.6	96.1	685	685	0.0761	0.7606	0.1322	0.0004	0.0282	0.0684	0.6665	0.2315	0.0016	0.0285	1.0				0.1815		0.7754	0.3	0.692	0.955	19.4	25.42	30.2	38.6	11.2	48.95	24.57	56	70	0.12	18.0	377.46	0.745	1.037	0.1248	0.0187	0.572	0.917	0.0134	0.746	0.885			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Total flow of a compound site gauging a rural catchment, predominantly Chalk overlain with drift, and with moderate artificial influences.	Two structures 150m apart operate in parallel. There is a two-arch bridge with two crump weirs and a three-arch bridge with three crump weirs in the arches.	Beneath the two-arch bridge are two Crump weirs which sometimes display non-modular flow as a result of summer weed growth d/s.		Chalk overlain by drift (predominantly Boulder Clay with sands and gravels). Rural, predominantly arable land.	Gw abstractions cause a moderate reduction in the natural runoff.
34018	Stiffkey at Warham	87.8	TF9443241388	594432.0	341388.0	52°56'04.8042"N 0°53'29.8887"E	52.93467	0.89164	Stiffkey	Warham	5.3	EA-EA	034018	34	1972-01-01		FV			16.5	true	false	false	false	false	false	false	true	false	false	false	false	false	PGI	1972-04-01	2023-09-30	0.597	0.023	2011-10-19	2011-10-19	12.8	2007-06-26	2007-06-26	0.145	0.308	0.451	1.1	1.49	0.79	18810	18325	97.422				8.8	24.6	51.6	73.7	97.1	658	662	0.0863	0.7797	0.1158	0.0007	0.0138	0.0779	0.706	0.203		0.0128	1.0				0.0673		0.7752	0.31	0.787	0.997	26.4	17.18	30.4	39.2	11.1	29.11	12.44	50	346	0.07	8.9	86.13	0.378	1.005	0.0672	0.0139	0.473	1.13	0.0063	0.634	1.022			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a rural, Chalk catchment, largely covered with Boulder Clay, with gw-influenced regime and significant artificial influences.	Flat V weir with crest tapping, 4m wide. ADCP installed in 2012 and used when the structure becomes non-modular.	Drowns above 0.8 cumecs. Riffle constructed d/s. One rating applied across period of record. Prior to 1978 (when dredging took place) d/s weed growth during summer months could cause complete drowning of gauging structure at lower flows.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. HIF in July 2015 is not aligned with the highest GDF for that month.	Chalk catchment largely covered with Boulder Clay. Rural, predominantly arable.	Groundwater-influenced regime. Large gw abstractions for PWS, in addition to industrial/agricultural abstractions, cause a significant reduction in the natural runoff.
34019	Bure at Horstead Mill	313.0	TG2669319368	626693.0	319368.0	52°43'27.9249"N 1°21'19.9917"E	52.72442	1.35555	Bure	Horstead Mill	1.3	EA-EA	034019	34	1974-01-01		MIS			9.1	true	false	false	false	false	false	false	true	false	false	true	false	false	RGI	1974-02-01	2023-09-30	2.463	0.029	1988-10-17	1988-10-17	30.8	1981-04-27	1981-04-27	1.16	1.79	2.25	3.7	4.38	0.81	18139	17960	99.013				6.2	13.5	36.2	65.6	104.5	668	653	0.122	0.7086	0.1352		0.0323	0.1018	0.6727	0.198	0.0033	0.0217	0.2134	0.7866			0.3801		0.5422	0.3	0.791	0.968	20.0	19.64	29.1	36.7	11.3	45.6	23.61	38	130	0.19	10.7	327.91	0.666	0.821	0.1184	0.0152	0.524	0.899	0.0119	0.694	0.774			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a rural catchment, flow record significantly affected by flow control operations.	Compound Crump weir consisting of 5 Crumps: 4 at fixed levels, the narrowest of which incorporates a fish pass. A vertical lift gate converts the largest to a sharp edge weir, this gate is used, during summer months, to retain u/s water levels.		Hydrograph closely reflects mill gate operation. Data for 1997 - 2000 was reprocessed and loaded in 2003, previous data was suspect owing to error in rating.	Low lying rural catchment of sand and gravel.	Limited ground and surface water abstractions u/s.
35001	Gipping at Constantine Weir	310.8	TM1542744110	615427.0	244110.0	52°03'12.5266"N 1°08'26.3250"E	52.05348	1.14065	Gipping	Constantine Weir	1.7	EA-EA		35	1961-01-01	1996-12-31	MIS	275.0			true	false	false	false	false	false	false	false	false	false	true	false	false	GI	1964-10-01	1996-12-31	1.349	0.039	1976-08-22	1976-08-22	44.26	1979-02-02	1979-02-02	0.125	0.378	0.575	3.259	4.784	0.45	11780	5610	47.623				2.5	26.7	55.9	76.3	97.5	595	578	0.0665	0.7193	0.1215		0.0913	0.055	0.6998	0.1629	0.0008	0.0786	0.594	0.3064		0.0995	0.1423		0.8271	0.28	0.479	0.95	28.1	37.61	27.8	35.0	10.6	42.41	24.55	53	94	0.1	2.5	315.7	0.689	0.976	0.1047	0.0297	0.671	0.557	0.0446	0.818	0.58			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Structure located in Ipswich, within a tidal range, gauging a rural, predominantly Chalk catchment. Only measures flow at low tide, retained for estimation of peak flows.	A 152 ft long, broad-crested weir with a sluice gate, located within the tidal range (thus strictly on the Orwell, not Gipping). Station is retained primarily for estimation of high flows.	Only measures flow at low tide. U/s and d/s bends are measured to correct for drowning. Weir calibrated by model tests, no checks made.	Large gaps in periods of unreliable data.	Boulder Clay overlying Chalk. Predominantly rural catchment, the only major town is Ipswich where the station is located.	Gw-influenced regime. Major artificial influences but net import is minor. Runoff reduced by industrial/agricultural abstraction. High flows affected since late 1980s by the Ipswich Flood Defence Scheme.
35002	Deben at Naunton Hall	163.1	TM3216253350	632162.0	253350.0	52°07'46.7604"N 1°23'26.0604"E	52.12966	1.39057	Deben	Naunton Hall	5.5	EA-EA	035002	35	1964-01-01		CC	12.3	12.3	10.6	true	false	false	false	false	false	false	true	false	true	true	false	true	RGI	1964-08-01	2023-09-30	0.781	0.008	1976-07-10	1976-07-14	25.6	1968-09-17	1968-09-17	0.084	0.175	0.267	1.75	3.44	0.34	21610	21445	99.236				5.0	24.1	50.4	61.7	65.5	612	593	0.0532	0.7887	0.1222	0.0002	0.0356	0.0508	0.7616	0.1713	0.0	0.0159	0.4614	0.5386			0.1698		0.8257	0.26	0.398	0.986	22.3	39.35	27.9	37.6	10.7	35.75	22.24	46	116	0.13	5.0	161.78	0.774	1.024	0.1318	0.0067	0.446	0.735	0.0102	0.664	0.73			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound crump weir gauging a rural catchment, affected by bypassing, weed growth, and artificial influences.	A compound Crump (with crest tapping) and low flow notch.	Bypassing occurs at 12 cumecs and seasonal weed growth causes drowning.		Mainly clay and Chalk, overlain primarily by Boulder Clay and also some sands and gravels. Rural catchment, predominantly arable land.	Some gw is transferred to beyond the catchment boundary and some is abstracted from within the catchment. The overall impact is to significantly reduce the natural runoff.
35003	Alde at Farnham	63.9	TM3600860105	636008.0	260105.0	52°11'19.1349"N 1°27'04.8445"E	52.18865	1.45135	Alde	Farnham	5.2	EA-EA	035003	35	1961-01-01		MIS			17.4	true	true	false	true	false	false	false	true	false	false	false	false	false	GI	1961-10-01	2023-09-30	0.319	0.02	1990-08-11	1990-08-14	25.4	2009-02-10	2009-02-10	0.043	0.071	0.1	0.644	1.24	0.36	22645	22572	99.678	1961-10-01		12.57	6.4	20.7	43.3	54.8	63.2	609	592	0.0687	0.7406	0.149	0.0015	0.0401	0.0606	0.7355	0.1925	0.0004	0.0105	0.198	0.802			0.13		0.87	0.26	0.365	0.988	26.1	41.72	29.3	36.9	10.9	22.12	11.76	41	128	0.21	6.4	62.78	0.597	0.979	0.0919	0.0022			0.008	0.551	0.831			gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested weir gauging a rural, groundwater-influenced, clay and Chalk catchment.	Broad-crested weir of ogee section with low flow notch and steel plate divide walls.	Rating is non-modular at high flows (above 0.838m stage) and flows go out of bank; rating confirmed by gaugings. Rating accounts for drowning but significant scatter in gaugings between 0.6m and 1.1m. Outside of this range rating fits well to gaugings. One rating applied across period of record.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. AMAX data are calculated through the extrapolated range of the modular rating for non-modular flows and all flows over 15.5 cumecs (0.838m) are overstimated. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	The gw contours show only token relationship to the surface topography. Predominantly clay and Chalk, overlain mainly by Boulder Clay and some sands and gravels. Rural, predominantly arable land.	Gw-influenced regime. Significant gw abstractions for industry/agriculture, some water exported from the catchment.
35004	Ore at Beversham	54.9	TM3601458271	636014.0	258271.0	52°10'19.8750"N 1°27'00.5690"E	52.17219	1.45016	Ore	Beversham	2.4	EA-EA	035004	35	1965-01-01		CC	12.0		11.9	true	true	false	true	false	false	false	true	false	false	false	false	false	GI	1965-03-01	2023-09-30	0.322	0.023	1976-06-26	1976-06-26	10.25	1979-02-02	1979-02-02	0.067	0.108	0.142	0.603	1.11	0.44	21398	20789	97.154	1965-03-01		5.78	4.9	17.8	38.2	52.9	61.0	608	596	0.0699	0.7581	0.1172	0.0002	0.0545	0.0686	0.7709	0.1332		0.0263	0.5228	0.4772			0.2688		0.7312	0.26	0.455	0.988	22.9	38.03	29.5	37.7	10.9	21.23	11.55	36	138	0.19	4.9	56.35	0.69	0.914	0.115	0.0083	0.407	1.116	0.0171	0.667	1.088	1992..1994		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound crump weir gauging a rural catchment with clay and Chalk bedrock. Flows affected by some artificial influences.	A compound Crump weir with low flow notch and crest tapping.	Drowning starts below QMED and has significant impact on flows, occasionally drowns as a result of d/s weed growth and siltation. One rating applied across period of record.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Gw-influenced regime, gw catchment exceeds topographic catchment. Predominantly clay and Chalk bedrock overlain with Boulder Clay and sand and gravel. Rural, predominantly arable land.	Industrial/agricultural abstraction or gw causes a moderate reduction in natural runoff.
35008	Gipping at Stowmarket	128.9	TM0575657940	605756.0	257940.0	52°10'52.7503"N 1°00'29.3752"E	52.18132	1.00816	Gipping	Stowmarket	25.1	EA-EA	035008	35	1966-01-01		CC	32.2		11.2	true	true	true	true	false	false	false	true	true	false	false	false	false	GEI	1964-04-01	2023-09-30	0.627	0.048	1989-09-23	1989-09-23	22.04	1979-02-01	1979-02-01	0.085	0.132	0.216	1.453	2.485	0.39	21732	21356	98.27	1964-02-17		14.499	25.6	44.0	62.0	83.0	97.5	606	577	0.0572	0.7743	0.1054		0.063	0.048	0.7531	0.1455	0.0007	0.0525	0.4903	0.5097			0.0428		0.9572	0.28	0.402	0.996	24.6	43.41	26.7	34.0	10.5	17.83	8.9	63	67	0.16	25.6	125.85	0.567	1.063	0.0987	0.0197	0.624	0.473	0.0283	0.8	0.486	1963..1988		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Structure able to contain all flows, gauging a flashy rural catchment with some artificial influences.	Compound Crump weir rebuilt in 1966 from a compound broad-crested weir, with spillway in tail.	All flows contained with one rating applied across period of record. Modular throughout range of flows. Eel pass installed in summer 2017, pumped but with negligible flow.	Missing data in June and July 2017 due to equipment removed from site for renovation. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Minimal natural storage within the catchment, flashy response. Predominantly clay and Chalk largely overlain with Boulder Clay with valley sand and gravel. Rural, mainly arable land, some urban development just u/s of station.	Industrial/agricultural abstractions broadly balance with effluent returns. High flows have been significantly affected by flood relief scheme since the late 1980s.
35010	Gipping at Bramford	298.0	TM1267346529	612673.0	246529.0	52°04'34.5317"N 1°06'07.3714"E	52.07626	1.10205	Gipping	Bramford	6.3	EA-EA	035010	35	1969-01-01		MIS	17.0		16.2	true	true	false	false	true	false	false	false	false	false	false	false	false	GI	1969-07-01	2023-09-30	1.164	0.035	1976-08-06	1976-08-06	28.06	1979-02-02	1979-02-02	0.194	0.358	0.541	2.774	4.492	0.5	19815	19786	99.854	1969-05-08		18.215	6.4	30.9	57.2	77.3	97.5	598	578	0.0646	0.7486	0.1203		0.0651	0.0554	0.7282	0.1617	0.0008	0.051	0.6259	0.327		0.047	0.1173		0.8526	0.28	0.457	0.961	27.7	38.72	27.5	34.8	10.5	36.04	19.49	55	92	0.1	6.4	295.83	0.662	0.983	0.1035	0.0173	0.571	0.84	0.0283	0.76	0.8	2018		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir gauging a rural, gw-influenced, clay and Chalk catchment with significant artificial influences.	Compound Crump weir with 2m, 5m & 12m sections. The largest section is in the middle and uses flood gate (automated during summer 2001) to convert to a sharp-edge weir. The 5m weir, on the left, is heavily truncated on the down slope - historically used for narrow boat transition. The weir on the right side is the lowest, or "fish-pass" weir.	Bypassing occurs at 12 cumecs and sluice operation on the weir is evident in the daily flow record. Separate ratings for open and closed gates apply to period of record.	Missing data 03-04-2017 as gates removed while eel pass constructed, resulting in erroneous data. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9). WY2018/2019 marked as rejected because the AMAX is on a data spike due to gate movement. GDF have been infilled.	Predominantly clay and Chalk, overlain by superficial deposits - mainly Boulder Clay and some crag deposits. Rural, predominantly arable land, some urban development in the valley.	Groundwater-influenced regime. Groundwater abstractions have a significant impact on the natural runoff.
35013	Blyth at Holton	92.9	TM4062276880	640622.0	276880.0	52°20'13.8597"N 1°31'50.3758"E	52.33718	1.53066	Blyth	Holton	12.3	EA-EA	035013	35	1970-01-01		CC	31.8	31.8		true	false	false	false	false	false	false	true	false	false	false	false	false	GI	1970-05-01	2023-09-30	0.469	0.031	1990-08-12	1990-08-12	24.99	1979-02-01	1979-02-01	0.066	0.099	0.133	0.973	1.79	0.31	19511	19424	99.554				4.4	20.2	41.6	52.6	60.9	613	590	0.0431	0.7584	0.1474	0.0005	0.0497	0.041	0.7054	0.2237		0.0278		1.0			0.0872		0.8055	0.26	0.346	0.993	26.5	40.64	29.2	37.2	11.0	18.7	9.23	39	100	0.18	4.5	90.74	0.648	1.107	0.1063	0.0139	0.579	0.557	0.0166	0.705	0.584			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a rural catchment very responsive to rainfall and with significant artificial influences.	An asymmetric compound Crump weir with low flow notch.			Surface geology dominated by Boulder Clay, with sands, gravels and crag deposits. The land use is predominantly rural.	Gw abstractions have a significant effect on the natural runoff and stage, resulting in reduced flow. The river responds very rapidly to rainfall.
35014	Mill River at Newbourne	27.1	TM2704942001	627049.0	242001.0	52°01'47.6929"N 1°18'30.4503"E	52.02991	1.30846	Mill River	Newbourne	4.3	EA-EA		35	1948-01-01	1969-12-31	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	I	1948-01-02	1969-12-31	0.151	0.019	1959-01-16	1959-01-16	0.379	1960-09-20	1964-03-15	0.111	0.133	0.146	0.189	0.208	0.92	8035	7479	93.08				4.2	18.8	30.2	40.0	50.8	589	568	0.1073	0.3995	0.1619	0.0078	0.3229	0.1289	0.3401	0.1964	0.002	0.3314		0.9854		0.0146	0.732		0.0604	0.26	0.894	0.983	20.5	14.58	30.2	36.5	11.0	13.58	6.94	30	116	0.26	4.3	31.12	0.647	1.043	0.1563	0.1131	0.774	1.417	0.1605	0.899	1.399			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Structure know to suffer from bypassing even at moderate flood flows, gauging a small rural catchment.	Trapezoidal sharp-edged weir in an old mill stream.	Site known to suffer from bypassing. Watercourse is an old mill stream on a steep valley side so flows tend not to return to the channel once overflowing occurs. Weir bypassed by moderate flood flows on many occasions.		Small rural catchment formed on Crag geology, outer suburbs of Ipswich at the upstream end.	Runoff reduced by industrial/agricultural abstraction.
36001	Stour at Stratford St Mary	844.3	TM042340	604200.0	234000.0	51°58'01.0333"N 0°58'16.0308"E	51.96695	0.97112	Stour	Stratford St Mary	5.4	ESW		36	1928-01-01	1992-10	MIS		9.8		true	false	false	false	false	false	false	false	false	false	true	false	false	RPGEI	1928-01-01	1992-10-11	3.096	0.026	1976-07-12	1976-07-12	41.24	1968-09-18	1968-09-18	0.566	1.042	1.523	7.644	13.88	0.5	23661	22992	97.173				5.6	37.9	70.0	105.3	127.6	599	579	0.0617	0.7537	0.1394	0.0001	0.0386	0.0552	0.7216	0.1922	0.0002	0.0293	0.7083	0.0033		0.2884	0.1375		0.8205	0.25	0.511	0.988	32.7	38.07	27.3	34.6	10.5	82.97	39.96	70	132	0.12	6.0	838.03	0.742	0.866	0.0878	0.0125	0.542	1.019	0.0166	0.741	1.042			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Complex, theoretically rated station gauging a predominantly rural, predominantly Chalk catchment with a long period of record.	Three separate weirs and five sluice gates operated by Essex and Suffolk Water plc at Stratford St Mary WTW.	Extreme floods bypass on rb. Theoretically rated. Since Apr 1978 upper limit of reliable gauging 16 cumecs.	Daily naturalised flows from 1932 to 1976.	Chalk overlain by Boulder Clay in upper catchment and London Clay in lower part. Predominantly agricultural land use, mainly arable, but some towns present in the catchment.	Gw-influenced regime. WTW (including PWS abstractions) and, to lesser extent Ely/Ouse Transfer Scheme (since 1971), highly influence flow. Runoff increased by effluent returns.
36002	Glem at Glemsford	87.3	TL8457647224	584576.0	247224.0	52°05'33.2597"N 0°41'34.5880"E	52.09257	0.69294	Glem	Glemsford	33.6	EA-EA	036002	36	1960-01-01		FL	20.0	10.0	18.9	true	true	false	true	false	false	false	true	false	false	false	false	false	GI	1960-10-01	2023-09-30	0.476	0.006	1997-10-04	1997-10-04	24.1	1968-09-16	1968-09-16	0.072	0.118	0.185	1.1	1.88	0.43	23010	22886	99.461	1961-11-06		8.2	33.6	62.4	91.8	115.1	127.6	619	598	0.0666	0.7795	0.1309		0.0197	0.056	0.7426	0.1876		0.0132	1.0				0.1122		0.8878	0.26	0.402	0.982	36.9	43.7	27.9	35.5	10.5	22.77	12.15	90	139	0.17	33.6	85.63	0.433	0.981	0.056	0.01	0.47	0.824	0.0084	0.628	0.875	1967		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal flume gauging a gw-influenced, rural catchment, bypassing at high flows and with problematic rating.	Trapezoidal flume.	Bypassing at high flows, occasional problems with weed growth. Modest modular limit, but downstream level recorder can allow for drowning. Flow appears to go non-modular around 0.75m, but drowning may be variable, caused at least in part by the Stour downstream. Gaugings above 1m are float runs and do not account for bypassing. Highest floods unreliably gauged. From Oct 1969, the rating applied allows for average drowning conditions. Two peak flow ratings applied across period of record, derived from a combination of theory and hydraulic modelling. Affected by Cranmore Green borehole pumping, e.g. elevated flows 05-07-18 to 30-07-18.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Naturalised flows from 1960 to Sep 1976. Exceptional minimum in Oct 1997 follows cessation of augmentation (via Cranmore Green outfall) in Sept 1997. Flow during summer 2017, 2018, 2019 and 2022 affected by Cranmore Green augementation borehole, hence abrupt high values. GDF POR reprocessed in 2014. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Rural catchment of the Upper Stour. Upper Chalk (exposed in river valley sides) is overlain by glacial sand and gravel and semi-pervious Boulder Clay. Rural, predominantly arable land.	Gw-influenced regime. Runoff reduced by industrial/agricultural abstraction.
36003	Box at Polstead	53.9	TL9852837881	598528.0	237881.0	52°00'13.8786"N 0°53'27.2839"E	52.00386	0.89091	Box	Polstead	15.9	EA-EA	036003	36	1960-01-01		FL	11.0	12.0	18.9	true	true	true	true	false	false	true	true	false	true	false	false	true	GEI	1960-06-09	2023-09-30	0.222	0.026	1973-09-10	1976-08-26	6.79	2000-11-06	2000-11-06	0.062	0.099	0.135	0.418	0.646	0.62	23124	23116	99.965	1961-01-06		3.85	17.3	43.2	62.4	72.3	85.2	602	566	0.0519	0.7498	0.1496		0.038	0.045	0.7346	0.2003		0.0193	0.4413			0.5587	0.2296		0.7704	0.26	0.555	0.993	26.6	37.7	25.5	32.2	10.4	16.22	9.15	60	145	0.13	17.3	56.72	0.506	1.055	0.0935	0.0091	0.434	1.213	0.0123	0.681	1.136			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging a rural, predominantly London Clay and Chalk catchment with superficial deposits and with only minor artificial influences. Station is occasionally affected by weed growth.	Trapezoidal flume with high flow rated spillway. Throat tapping.	Subject to reed/weed growth problems. One rating applied across period of record. Non-modular flows recorded since 1997 using secondary instrument.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Naturalised flows from 1961 to 1976. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly London Clay; Chalk in N, all overlain by Boulder Clay and some sands and gravels. Rural, predominantly arable land.	Gw-influenced regime. Minimal ground and surface water abstractions for agricultural/industrial purposes. Runoff increased by effluent returns.
36004	Chad Brook at Long Melford	47.4	TL8678545940	586785.0	245940.0	52°04'49.0828"N 0°43'28.0024"E	52.0803	0.72445	Chad Brook	Long Melford	34.8	EA-EA	036004	36	1965-01-01		EW	11.0	13.9		true	true	true	true	false	false	false	false	false	false	false	false	false	GI	1965-10-01	2023-09-30	0.256	0.0	1995-08-04	1995-08-07	10.0	1968-09-16	1968-09-16	0.028	0.064	0.115	0.583	0.999	0.46	21184	20733	97.871	1965-10-01		4.799	32.6	56.1	80.0	105.1	125.7	608	589	0.0734	0.8383	0.0705		0.0178	0.0571	0.7927	0.1342	0.0002	0.0154	1.0				0.0008		0.9992	0.28	0.44	1.0	28.5	40.53	25.6	33.0	10.3	20.8	9.57	80	183	0.18	32.6	50.33	0.458	0.996	0.065	0.0057	0.437	0.955	0.0057	0.7	0.657			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	An 'Essex' profile with side weir which can be affected by drowning in summer, gauging a rural, Chalk catchment completely covered with Boulder Clay.	'Essex' profile (modified Flat V Crump) weir with low flow side weir.	Low flow side weir drowns in summer due to weed growth. Poorly maintained channel also influences modular limit. High flow spillway accurate to 1.1m. Theoretically rated. Full range with convincing water-balance but low flow data should be treated as indicative only. One rating applied across period of record.	Naturalised flows from 1965 to 1976. Missing data in 2010 and 2011 is as a result of water level management practices which caused the structure to become non-modular. Magnitude of POR maximum flow in Sept 1968 is supported by EA, but may be an underestimate as flow known to have been extrapolated. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Chalk with complete cover of Boulder Clay. Rural catchment, predominantly arable farming.	Gw-influenced regime. Runoff reduced by industrial/agricultural abstraction.
36005	Brett at Hadleigh	156.0	TM0244142918	602441.0	242918.0	52°02'51.6092"N 0°57'02.9393"E	52.04767	0.95082	Brett	Hadleigh	18.2	EA-EA	036005	36	1962-01-01		EW	25.0	30.0		true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1962-10-01	2023-09-30	0.738	0.029	1997-08-21	1997-08-22	19.2	1987-10-10	1988-01-29	0.098	0.235	0.342	1.65	2.79	0.48	22280	22096	99.174				17.7	45.2	71.2	89.8	110.7	603	580	0.0531	0.8112	0.1126		0.0227	0.0394	0.7753	0.162	0.0001	0.022	0.8554			0.1446	0.0484		0.9516	0.28	0.428	0.994	29.8	43.59	26.2	33.7	10.3	35.13	15.87	69	158	0.12	17.7	155.85	0.494	1.1	0.0764	0.0076	0.442	0.786	0.0092	0.655	0.829			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	'Essex' profile gauging a rural, Upper Chalk semi-pervious catchment with some artificial influences.	'Essex' profile (modified Flat V Crump) weir with low flow side weir and high flow rated spillway. D/s water level recorder to allow for drowning. Station removed from peak flows dataset in August 2024 (WINFAP Files v13).	Drowning compensated for using d/s water level recorder. Rating potentially overestimates flows below 0.6m but this is slight. One rating applied across period of record.	No peak flow data are presented for this station as uncertainty related to non-modularity mean there is limited confidence in high flows. Naturalised flows from 1962 to 1976. Since 1976, adjustments for gw abstractions no longer made to the DMFs.	Upper Chalk largely covered mainly with semi-pervious Boulder Clay and some sands and gravels. Predominantly rural catchment, mainly arable land.	Gw-influenced regime. Since 1976, adjustments for gw abstractions for PWS and industrial abstraction from surface water are no longer made to the gauged daily mean flows. Minor effluent returns may affect flow.
36006	Stour at Langham	578.0	TM0206734431	602067.0	234431.0	51°58'17.7686"N 0°56'25.3232"E	51.9716	0.94037	Stour	Langham	6.4	EA-EA	036006	36	1962-01-01		FL	40.0	40.0	7.1	true	true	false	true	false	false	false	true	false	false	true	false	false	RPGI	1962-10-01	2023-09-30	2.928	0.094	1976-07-09	1976-07-09	50.3	1987-10-12	1987-10-12	0.56	1.11	1.72	6.18	10.5	0.53	22280	22280	100.0	1962-10-01		27.8	7.1	40.0	74.8	109.9	127.6	599	580	0.0618	0.7577	0.13	0.0	0.0426	0.0553	0.7231	0.1876	0.0002	0.0324	0.7617			0.2383	0.1178		0.8224	0.25	0.509	0.985	33.6	37.79	27.7	35.0	10.6	79.29	44.14	75	122	0.12	7.6	571.36	0.768	0.848	0.0861	0.0139	0.564	0.988	0.0189	0.752	1.001			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station provides high quality record from a rural catchment with minor urban areas, although some bypassing and artificial influences are significant.	Twin-trapezoidal flume with throat tapping. Spillway channel with broad-crested weir constructed in 12/1985 takes some flow above 1.45m. Excellent site.	Bypassing occurs over opposite bank above 1.85m. More bypassing possible from 0.5km u/s during extreme events. One rating applied across period of record. Throat tapping installed during flume construction. Around 2003 the data from this point moved from chart to logger. No adjustments are made to flows, or thought necessary, for non-modularity. Above a stage of 1.435m, spillway flow should be added to rated flow.	No POT data are presented for this station as they have no spillway correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. June and July 2008 affected by PWS abstractions. Naturalised flows to September 1976. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Chalk outcrops in N, London Clay in S, overlain by superficial deposits, mainly semi-pervious Boulder Clay. Mainly rural catchment, predominantly arable land, with minor urban development in valley bottom.	Gw-influenced. Runoff reduced by surface water and ground water abstraction for PWS, industry and agriculture. Decreased flow since ~2014 due to increased intake for PWS. Occasional augmentation from Stour Augmentation Groundwater Scheme (SAGS) borehole pumping, and intermittent pumping from Ely/Ouse Transfer Scheme. Occasional peaks due to mill operation. Pumping periodically carried out on the Stour, resulting in noisy stage value and observed as a step up in stage from September 2019 to October 2019.
36007	Belchamp Brook at Bardfield Bridge	58.6	TL8478542156	584785.0	242156.0	52°02'49.1589"N 0°41'35.6891"E	52.04699	0.69325	Belchamp Brook	Bardfield Bridge	27.0	EA-EA	036007	36	1964-01-01		FL	9.0	11.5	33.9	true	true	true	true	false	false	false	false	true	true	false	false	true	N	1960-11-18	2023-09-30	0.187	0.002	1963-06-09	1963-07-27	12.56	2001-10-21	2001-10-21	0.02	0.039	0.063	0.415	0.75	0.41	22962	22514	98.049	1964-10-01		4.63	27.5	48.3	65.8	79.8	87.9	563	560	0.0363	0.9031	0.0427		0.0113	0.0354	0.8494	0.1091	0.0006	0.0055	0.6786			0.3214	0.1535		0.8465	0.25	0.523	0.996	26.1	36.21	27.3	34.1	10.5	13.64	7.14	65	70	0.1	27.5	58.16	0.491	0.992	0.0789	0.0057	0.462	1.136	0.0036					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station provides good quality, close to natural, record from a rural catchment with mixed geology.	Trapezoidal flume with throat tapping.	Full range station in winter, occasionally drowns in summer due to weed growth. One rating applied across period of record. Confirmed by gaugings to 1.6m.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Naturalised flows from 1965 to 1976, only minimal adjustments needed to flows since then. Daily flow POR reprocessed in 2014. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Chalk in N, clays in S, all overlain mainly by Boulder Clay and some sands and gravels. Rural, predominantly arable land.	Gw-influenced regime. Runoff reduced by industrial/agricultural abstraction. Natural flow to within 10% at Q95.
36008	Stour at Westmill	224.5	TL8273346341	582733.0	246341.0	52°05'06.9115"N 0°39'56.1480"E	52.08525	0.6656	Stour	Westmill	33.2	EA-EA	036008	36	1960-01-01		FL	25.0	9.0	15.2	true	true	true	true	false	false	false	true	false	false	false	false	false	RGEI	1960-06-18	2023-09-30	1.345	0.023	1966-09-10	1966-09-10	40.0	1968-09-16	1968-09-16	0.147	0.437	0.679	2.762	4.81	0.44	23115	23070	99.805	1960-09-01		16.251	34.7	60.7	91.9	112.8	125.2	606	589	0.0571	0.7646	0.1279		0.0477	0.0515	0.7599	0.1497	0.0002	0.0383	1.0				0.0462		0.9538	0.26	0.413	0.994	33.3	42.95	28.7	36.3	10.7	41.22	22.13	89	121	0.12	34.8	222.82	0.582	0.912	0.0684	0.0152	0.587	0.965	0.0234	0.761	0.985	1959..1967		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Record of low accuracy from a rural, Upper Chalk catchment with major artificial influences. The site theoretically has a modular limit of around 1.7m.	Compound trapezoidal critical depth flume with d/s level recorder.	Affected by weed growth but rarely drowns out. Above 1.15m some flow passes over a broad-crested weir 100m u/s into a spillway. The gaugings for this station are float runs and are less accurate than standard methods and result in some scatter around the rating. One rating applied across period of record. Affected by non-modular flow.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Archived daily flows adjusted for the effects of Ely/Ouse Transfer Scheme until 1976. Peak flow in December 2014 not available (non-modular). Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Upper Chalk overlain by superficial deposits, mainly semi-pervious Boulder Clay and some sand and gravel. Rural, predominantly arable land.	Gw-influenced regime. Since 22/3/1971, flow augmented by intermittent pumping from the Ely/Ouse Transfer Scheme. Runoff also influenced by industrial/agricultural abstraction from surface and groundwater, and effluent returns.
36009	Brett at Cockfield	25.7	TL9135352546	591353.0	252546.0	52°08'17.0268"N 0°47'41.0375"E	52.13806	0.79473	Brett	Cockfield	59.4	EA-EA	036009	36	1968-01-01		EW	8.0			true	true	false	true	false	false	true	false	false	true	false	false	true	N	1968-06-01	2023-09-30	0.13	0.0	1973-08-15	2019-09-30	6.35	2001-10-21	2001-10-21	0.002	0.01	0.03	0.32	0.574	0.33	20210	20199	99.946	1968-02-23		3.915	59.0	78.2	88.7	93.6	110.7	609	598	0.0433	0.852	0.0831		0.0216	0.0276	0.8129	0.1477		0.0105	1.0						1.0	0.28	0.395	1.0	18.4	46.67	25.2	32.6	10.2	10.65	5.46	87	150	0.1	59.0	25.56	0.615	1.15	0.1128	0.0046			0.0052	0.5	1.069			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	'Essex' profile gauging a small, rural, close to natural, catchment with Upper Chalk covered with Boulder Clay.	'Essex' profile (modified Flat V Crump weir). No spillway.	Modular limit of 0.66m theoretically derived; secondary instrument to record non-modular flows installed in 2003. Lack of gaugings at high flows. One rating applied across period of record.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Naturalised flows from 1969 to 1976, only minimal adjustments needed since. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Upper Chalk completely covered with Boulder Clay. Rural, predominantly arable land.	Natural to within 10% at Q95.
36010	Bumpstead Brook at Broad Green	28.3	TL6892041826	568920.0	241826.0	52°02'56.6963"N 0°27'43.0982"E	52.04908	0.46197	Bumpstead Brook	Broad Green	55.8	EA-EA	036010	36	1968-01-01		EW	6.0	6.0		true	true	true	true	false	false	true	false	true	true	false	false	true	GIN	1968-03-29	2023-09-30	0.14	0.0	1976-07-02	2002-08-02	14.41	2001-10-21	2001-10-21	0.003	0.01	0.025	0.333	0.647	0.24	20274	20249	99.877	1967-10-01		7.855	57.0	74.4	98.1	115.9	125.2	616	588	0.0406	0.8696	0.0701		0.0178	0.0311	0.8657	0.0869		0.0162	1.0						1.0	0.27	0.387	0.999	34.1	44.59	29.1	36.9	11.2	9.2	4.56	96	97	0.25	57.3	27.55	0.351	0.905	0.0447	0.0056	0.358	0.495	0.0075	0.597	0.569			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	'Essex' profile gauging a small, rural, virtually natural catchment.	'Essex' profile (modified Flat V Crump) weir with crest tapping and high flow spillway.	Modular limit approx. 6.0 cumecs. Approx. limit of gauging is 12.5 cumecs. Bypassing estimated to start at 1.2m. Rating accounts for non-modular flow above 6 cumecs. One rating applied across period of record.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Highest gauging taken in 1968 and is an estimate. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Chalk and glacial gravel in the catchment completely overlain with Boulder Clay. Rural, predominantly arable land.	Some industrial/agricultural abstraction, but natural to within 10% at Q95. Only minor adjustments needed, virtually natural catchment.
36011	Stour Brook at Sturmer	34.5	TL6964044098	569640.0	244098.0	52°04'09.3728"N 0°28'24.9188"E	52.06927	0.47359	Stour Brook	Sturmer	54.6	EA-EA	036011	36	1968-01-01		EW	5.7	7.0	29.8	true	true	true	true	false	false	false	false	false	false	false	false	false	GEI	1968-03-15	2023-09-30	0.245	0.018	1973-03-21	1973-07-18	11.9	2001-10-21	2001-10-21	0.05	0.082	0.11	0.518	0.882	0.4	20288	20221	99.67	1968-03-15		6.78	54.8	75.0	100.0	116.1	123.0	624	592	0.0592	0.6213	0.139		0.1732	0.0535	0.6551	0.1233		0.1676	1.0				0.0402		0.9598	0.26	0.381	0.999	33.5	44.63	28.6	36.8	10.9	13.9	6.6	98	101	0.15	54.8	34.24	0.422	1.091	0.0603	0.0554	0.714	0.588	0.1004	0.845	0.611	2000..2014		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	'Essex' profile weir gauging a small, groundwater-influenced catchment with significant artificial influences.	'Essex' profile (modified Flat V Crump) weir with crest tapping, insensitive.	Modular limit approx. 5.0 cumecs. Rating accounts for non-modular flow. One rating applied across period of record.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Flood in Sept 1968 inundated the station and has been separately estimated. Adjustments were made for industrial and sewage effluent and gw abstractions from 1968 to 1976. AMAX events in Nov 2000, Feb 2009 and Nov 2014 rejected as suspect crest tapping data affected non-modular adjustment. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Chalk with superficial deposits, mainly Boulder Clay. Upper catchment is mainly rural (arable farming), considerable urban development (Haverhill) in lower catchment.	Gw-influenced regime. Runoff reduced by industrial/agricultural abstraction. Station is immediately d/s of Haverhill - urban runoff and STW discharges cause short, sharp peaks.
36012	Stour at Kedington	76.2	TL7084845012	570848.0	245012.0	52°04'37.5919"N 0°29'29.9479"E	52.07711	0.49165	Stour	Kedington	52.5	EA-EA	036012	36	1968-01-01		EW	10.0	10.0	29.9	true	true	false	true	false	false	false	false	false	false	false	false	false	RGEI	1968-04-01	2023-09-30	0.769	0.009	1976-08-08	1976-08-08	23.9	1968-09-16	1968-09-16	0.06	0.205	0.358	2.042	2.8	0.49	20271	20256	99.926	1968-04-01		12.073	53.9	76.6	100.3	113.5	123.0	613	599	0.0802	0.7144	0.1736		0.0283	0.078	0.7268	0.182	0.0004	0.0123	1.0				0.0192		0.9808	0.26	0.396	0.99	30.1	43.95	29.8	38.3	10.7	21.74	11.19	97	147	0.07	53.9	76.64	0.475	0.984	0.06	0.0088	0.5	0.553	0.0101	0.626	0.572			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Insensitive 'Essex' profile gauging a small, rural, Chalk catchment.	'Essex' profile (modified Flat V Crump) weir with crest tapping. No spillway.	Insensitive. High downstream levels make estimate of flow peak uncertain. Ponding u/s above 11.5 cumecs. Rating above bank full tends to overestimate flows. Crest tapping prone to siltation which made modular limit uncertain until 1970, when channel improved for Ely/Ouse Transfer Scheme, making station full range. Structure built on peat, some percolation beneath. Adjustments have been to flows to account for non-modularity. One rating applied across period of record.	Station was completely overwhelmed in Sept 1968 floods, which is the highest event on record. Post 1976 adjustments made for Ely/Ouse Transfer Scheme. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Boulder Clay overlying Chalk, some outcropping. Rural, predominantly arable land.	Gw-influenced regime. Effect of Transfer Scheme results in unrealistic water balance. Abstraction from surface water and gw for industrial/agricultural purposes. Runoff increased by effluent returns.
36013	Brett at Higham	195.0	TM0322935408	603229.0	235408.0	51°58'47.8247"N 0°57'28.2176"E	51.97995	0.95784	Brett	Higham	5.9	EA-EA	036013	36	1970-01-01		EW	9.6	31.0		true	false	false	false	false	false	false	true	false	false	false	false	false	SGEI	1971-04-01	2023-09-30	0.695	0.02	1992-08-06	1992-08-06	30.7	2016-06-25	2016-06-25	0.083	0.198	0.313	1.42	2.39	0.46	19176	13897	72.471				6.6	36.5	66.2	88.8	110.7	601	579	0.0618	0.764	0.1456	0.0002	0.0278	0.0521	0.7336	0.1873	0.0004	0.0245	0.6952	0.0136		0.2913	0.133		0.867	0.27	0.481	0.995	31.2	40.34	26.6	34.0	10.4	46.57	23.65	64	155	0.13	6.6	191.78	0.589	0.984	0.0827	0.0093	0.509	0.797	0.0115	0.71	0.806			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging the whole catchment of R Brett, heavily affected by drowning.	'Essex' profile (modified Flat V Crump) weir with crest tapping. Located approx. 450m u/s from confluence with R. Stour.	Flows not calculated when drowning. Very low modular limit due to backing up from Essex and Suffolk Water plc waterworks on Stour at Stratford St Mary.	Record is incomplete due to drowning, gaps present especially before 2003.	Upper Chalk covered with semi-pervious Boulder Clay N of Hadleigh, lower reaches mainly London Clay overlain by superficial deposits. Predominantly rural catchment (except for Hadleigh).
36015	Stour at Lamarsh	480.7	TL8968135757	589681.0	235757.0	51°59'16.3389"N 0°45'39.6465"E	51.98787	0.76101	Stour	Lamarsh	17.5	EA-EA	036015	36	1972-01-01		MIS	35.0	30.0	3.5	true	true	false	true	false	false	false	true	false	false	false	false	false	RPGEI	1972-04-01	2023-09-30	2.44	0.195	1976-08-28	1976-08-28	44.1	2014-02-08	2014-02-08	0.567	0.931	1.31	4.66	8.71	0.49	18810	18195	96.73	1970-06-01		30.6	17.8	48.7	80.7	111.2	127.6	600	583	0.0592	0.7791	0.1163		0.0425	0.0509	0.7492	0.1633	0.0002	0.0356	0.9043			0.0957	0.0939		0.8975	0.26	0.474	0.987	32.8	39.36	27.7	35.1	10.6	60.21	30.9	80	135	0.12	17.8	481.29	0.655	0.871	0.0777	0.0151	0.581	0.881	0.0207	0.759	0.904	1971		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station using float runs for gauging a predominantly rural catchment with mixed geology and with major artificial influences.	Flat V weir with low flow sharp-crested rectangular notch.	No spillway. Flood banks contain approx. 35 cumecs. Reasonable fit to gaugings up to bank full. Breaching u/s may cause bypassing. Gaugings for this station are float runs, and less accurate than standard methods. One rating applied across period of record.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Naturalised flows 1972-1976, since then adjustments needed for abstractions, discharges and PWS predominantly for Haverhill. First year of record rejected due to partial data. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Mainly Upper Chalk with some London Clay in S, overlain by superficial deposits (predominantly Boulder Clay). Mainly rural, predominantly arable land, some built-up areas.	Ely/Ouse Transfer Scheme adjustments already made. Runoff reduced by public water supply (predominantly for Haverhill), industrial and agricultural abstraction from surface water and gw. Runoff increased by effluent returns. Flow affected by Ely/Ouse Transfer Scheme.
37001	Roding at Redbridge	303.3	TQ4149988348	541499.0	188348.0	51°34'34.4791"N 0°02'26.0453"E	51.57624	0.04057	Roding	Redbridge	5.7	EA-HNL	5480TH	37	1950-01-01		EW	24.9	33.5	13.8	true	true	false	true	false	false	false	true	true	false	true	false	false	SEI	1950-01-19	2023-09-30	1.817	0.0	1950-01-19	1950-01-19	59.6	2000-10-30	2000-10-30	0.208	0.447	0.735	4.47	7.8	0.39	26918	26906	99.955	1950-02-01		21.8	8.4	36.2	70.8	93.3	116.9	610	607	0.0791	0.6172	0.1601	0.0019	0.1264	0.097	0.5834	0.2073	0.0023	0.1071				1.0	0.0271		0.6334	0.29	0.331	0.983	29.9	46.64	31.2	39.4	11.2	65.58	34.34	68	123	0.1	8.4	301.05	0.744	0.984	0.0901	0.0495	0.734	0.425	0.0694	0.84	0.403	1949		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A non-standard Essex profile Flat V weir based in the Roding catchment with rural headwaters but influenced by urban development in the lower reaches. The flow regime has artificial influences.	Originally a broad crested weir but was replaced due to insensitivity at low flows. Replaced by the current Essex profile weir (modified Flat V weir) in 1962. Used for both flood warning/forecasting and water resource purposes.	One peak flow rating applied across period of record. Rating may not estimate flow accurately above 1m. Calibration above 35 cumecs is based upon model tests.	Significant floods in Nov 1974 and Oct 2000. Questions whether gauge drowned during these events. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Low lying, mainly impervious (London Clay and superficial deposits) catchment. Land use is rural with significant urban development close to the G/s.	Pattern of low flows influenced by abstractions and effluent returns. Flows augmented by moderate net import of water from Thames Water Utilities but this was eliminated to produce naturalised flows between 1951-1975. The diversion of Luxborough Lane STW effluent, completed in 1987, reduced DMFs in Redbridge.
37002	Chelmer at Rushes Lock	533.9	TL7947109024	579471.0	209024.0	51°45'04.1653"N 0°35'54.9881"E	51.75116	0.59861	Chelmer	Rushes Lock	11.3	EA-EA	037002	37	1932-01-01	2010-10-01	FV	13.0	19.4	35.3	true	false	false	false	false	false	false	false	false	false	true	false	false	PGEI	1932-01-01	2010-10-05	1.907	0.0	1961-09-01	1961-10-17	20.0	1974-02-11	2003-01-03	0.132	0.505	0.855	4.82	8.31	0.44	28768	28694	99.743				9.5	37.2	64.6	93.6	122.4	598	583	0.0761	0.6336	0.1621	0.0	0.1071	0.0724	0.6253	0.1912	0.0008	0.0997	0.0181			0.9819	0.0416	0.0017	0.5526	0.29	0.402	0.968	25.7	43.03	30.2	37.5	11.6	58.15	28.93	65	96	0.14	9.6	547.82	0.842	0.884	0.0887	0.0354	0.689	0.811	0.049	0.836	0.851			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station with complex hydrometric history with rural catchment on London Clay with significant urban development.	Sharp-crested, shallow V profile weir (insensitive), replaced broad-crested timber weir in 1972.	Complex hydrometric history. Weir provides head for lock (navigable river), discharge through lock not measured. Lock thought to influence flow pattern at low flows during busy periods, e.g. in summer of 2006. Weir repaired in 1982 because of serious leakage. No accurate measure of low or high flow, upper limit is 0.7m (19.99 cumecs). Bypassing begins at 0.57m.	GDF in 2006 may be affected by lock. Weir was being repaired in 1982 to fix serious leakage.	Mainly London Clay with extensive superficial deposits (predominantly Boulder Clay). Overall rural (arable farming), but significant urban development (especially Chelmsford u/s of station) and with dense road network.
37003	Ter at Crabbs Bridge	77.8	TL7864510753	578645.0	210753.0	51°46'01.0218"N 0°35'15.1535"E	51.76695	0.58754	Ter	Crabbs Bridge	14.5	EA-EA	037003	37	1932-01-01		FL	8.0	11.5	28.3	true	true	false	true	false	false	false	true	false	false	false	false	false	PI	1932-01-01	2023-09-30	0.304	0.004	1976-08-05	1976-08-06	9.68	2012-05-03	2012-05-03	0.037	0.087	0.133	0.605	1.116	0.46	33511	33437	99.779	1963-12-01		5.895	14.8	39.4	60.6	76.6	93.2	591	570	0.0737	0.7544	0.1271		0.0364	0.0696	0.7339	0.1602	0.002	0.0314				1.0	0.1493		0.8491	0.31	0.461	0.994	18.6	41.76	28.8	36.9	11.5	29.29	13.81	59	149	0.21	14.8	77.76	0.607	1.142	0.1153	0.0074	0.432	0.854	0.0116	0.752	0.994	1980		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Long period of record from a rural catchment, includes daily flow record of a former, less accurate station Hatfield Peverel.	Trapezoidal flume with throat tapping and low flow control, replaced less accurate station - Hatfield Peverel, 900m d/s, in 1964. Hatfield Peverel record held with this station (1932-1964).	Theoretically rated. Modular limit ~0.2m, depending on downstream weed, no level yet recorded above 1.6m (structurefull). Scatter in gaugings beyond QMED caused by drowning. One peak flow rating applied across period of record.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected. Records in 1932-1964 are from a former, less accurate Hatfield Peverel station. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	London Clay, overlain with superficial deposits, mainly Boulder Clay and some sands and gravels. Rural, predominantly arable land.	Minor surface water abstractions for spray irrigation, small discharges from STW but net export through PWS.
37004	Blackwater at Langford	337.0	TL8351509016	583515.0	209016.0	51°44'59.1940"N 0°39'25.6396"E	51.74978	0.65712	Blackwater	Langford	6.5	EA-EA		37	1932-01-01	1968-12-31	MIS				true	false	false	false	false	false	false	false	false	false	true	false	false	SPG	1932-10-01	1968-07-31	1.376	0.02	1961-07-30	1961-07-30	18.4	1960-11-02	1960-11-27	0.224	0.496	0.697	2.884	5.516	0.45	13088	13088	100.0				5.4	31.4	63.7	99.6	124.6	591	570	0.0687	0.7134	0.1312		0.0776	0.0626	0.6788	0.1857	0.0027	0.067	0.1841			0.8159	0.2173	0.0003	0.7596	0.26	0.489	0.991	25.5	39.28	28.4	35.6	11.4	69.03	32.28	63	130	0.17	5.4	341.8	0.655	0.877	0.0978	0.0303	0.634	0.767	0.0401	0.824	0.711			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Complex of weirs and sluices gauging a predominantly rural catchment of R. Blackwater and monitoring intake of what was the Southend Water Company.	Complex of weirs and sluices near the intake of what was the Southend Water Company. Measurement included the amounts abstracted from the R. Blackwater before it joins with R. Chelmer.		Quality of data is unknown.	Practically the whole catchment is covered with Boulder Clay, overlying glacial gravels. In the SE, London clay underlies the drift but is rarely exposed.
37005	Colne at Lexden	238.2	TL9624926113	596249.0	226113.0	51°53'56.3742"N 0°51'03.7457"E	51.89899	0.85104	Colne	Lexden	8.2	EA-EA	037005	37	1959-01-01		FL	16.0	20.0	9.7	true	true	true	true	false	true	true	true	true	true	true	true	true	RPI	1959-10-01	2023-09-30	1.058	0.032	1965-08-30	1965-08-30	30.27	2001-10-22	2001-10-22	0.202	0.367	0.558	2.225	3.706	0.52	23376	23359	99.927	1958-01-01		12.1	10.4	40.0	68.0	90.6	113.6	595	566	0.0747	0.7352	0.1377		0.0478	0.0709	0.646	0.2414		0.0393	0.1884			0.8116	0.1817		0.7001	0.25	0.537	0.97	30.4	38.13	27.8	34.5	11.0	46.14	24.6	66	121	0.15	10.4	235.88	0.549	0.952	0.0761	0.014	0.539	0.83	0.0217	0.755	0.794	1959		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Large trapezoidal flume, station provides flood warning for Colchester.	Large trapezoidal flume with d/s level recorder. Provides flood warning for Colchester.	Bypassed on the left bank at very high flows, at 1.75 m stage. Suffers badly from weed growth issues, which is cleared monthly. Out of bank flows may be underestimated due to bypassing. One peak flow rating applied across period of record. Reasonable fit to gaugings although rated flows are adjusted for non-modular conditions.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected. Naturalised flows for period 1959 to 1976. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Mainly London Clay and some Upper Chalk, with superficial deposits of semi-pervious Boulder Clay and some sands and gravels. Rural, predominantly arable land.	Runoff reduced by surface water/groundwater abstraction for public water supply, industry and agriculture.
37006	Can at Beach's Mill	228.4	TL6900907165	569009.0	207165.0	51°44'15.7535"N 0°26'46.6625"E	51.73771	0.4463	Can	Beach's Mill	23.3	EA-EA	037006	37	1962-01-01		FL	28.0	30.0	8.1	true	true	false	true	false	false	false	true	false	false	false	false	false	EI	1962-04-01	2023-09-30	1.28	0.045	1989-02-11	1989-02-11	47.2	2000-10-30	2000-10-30	0.192	0.328	0.526	2.83	5.09	0.41	22463	22455	99.964	1960-01-01		23.3	24.2	43.5	66.8	87.0	117.0	604	589	0.0806	0.6458	0.1505	0.0001	0.1117	0.0859	0.6081	0.2012	0.0001	0.1017				1.0	0.0003		0.5651	0.28	0.316	0.991	25.0	46.94	31.0	38.4	11.6	30.87	14.83	66	81	0.16	24.2	227.85	0.615	0.987	0.0802	0.0342	0.663	1.123	0.051	0.843	1.167			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound flume within a mill race gauging a predominantly rural catchment with London Clay covered by Boulder Clay, and with significant artificial influences.	Triple throated compound flume (built within mill race). Trapezoidal centre section for low flows.	Limit of station is 35 cumecs. Spillway flow starts at around 2m - very significant part of flow, allowance for this not made in record. Two peak flow rating applied across period of record.	Naturalised flows from 1962 to 1976. Period-of-record maximum flow in Oct 2000 may have been higher due to spillway flows. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	London Clay overlain with Boulder Clay in N. Rural, predominantly arable land with some grassland and some built-up areas in the S of the catchment.	Industrial and sewage effluent discharges, adjustments needed for effluent discharges.
37007	Wid at Writtle	136.3	TL6867906010	568679.0	206010.0	51°43'38.7600"N 0°26'27.4607"E	51.72743	0.44096	Wid	Writtle	27.1	EA-EA	037007	37	1964-01-01		EW	25.0	24.0	19.5	true	true	true	true	false	false	false	false	false	false	false	false	false	EI	1964-11-27	2023-09-30	0.858	0.05	1976-08-26	1976-08-26	25.5	1974-11-21	1974-11-21	0.142	0.235	0.372	1.96	3.346	0.41	21492	21434	99.73	1964-10-01		14.564	27.0	47.6	69.5	91.1	117.0	606	592	0.108	0.5586	0.1726	0.0001	0.1524	0.1205	0.4714	0.2588		0.1466				1.0	0.0005		0.3265	0.28	0.243	0.995	27.4	47.63	31.8	38.7	11.7	28.67	16.04	69	62	0.18	27.0	135.63	0.596	1.01	0.0781	0.0461	0.681	1.079	0.0714	0.853	1.099	1992..2010		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	'Essex' profile gauging a rural catchment on London Clay, flows significantly increased by STW effluent especially in summer.	'Essex' profile (modified Flat V Crump) weir.	Rated spillway starts at 1.25m. Full range, modular station. Weir began to subside in 1991. Flow during summer months consists predominantly of STW discharge, of which approximately 0.08 cumecs is derived from outside the catchment, adjustments needed for this. One rating applied across period of record.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Low-lying catchment on London Clay with scattered areas of Boulder Clay cover. Mainly rural, mixed arable and grassland, with significant urban component.	Responsive catchment. Runoff increased by STW effluent returns with net import, which significantly affects flows especially in summer. Runoff reduced by industrial/agricultural abstraction.
37008	Chelmer at Springfield	190.3	TL7130307126	571303.0	207126.0	51°44'11.9872"N 0°28'46.0770"E	51.73666	0.47947	Chelmer	Springfield	23.1	EA-EA	037008	37	1965-01-01		EW	6.0	85.0	28.1	true	true	true	true	false	false	false	true	false	true	false	false	true	PGI	1965-11-18	2023-09-30	1.064	0.129	1976-08-27	1976-08-27	29.3	2000-10-30	2000-10-30	0.284	0.434	0.599	2.117	3.422	0.57	21136	21136	100.0	1965-10-02		13.947	22.1	48.2	80.4	104.9	122.4	600	584	0.0621	0.6898	0.1561		0.0759	0.0413	0.7501	0.1506	0.0005	0.0548	0.0522			0.9478	0.0086		0.7559	0.31	0.492	0.985	27.8	39.34	28.7	35.7	11.3	45.46	25.94	77	131	0.18	22.1	189.62	0.565	0.91	0.0737	0.0227	0.634	0.548	0.0315	0.782	0.588	1994		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	'Essex' profile located in Chelmsford gauging a predominantly rural catchment with mixed geology and some artificial influences.	'Essex' profile (modified Flat V Crump) weir.	Full range station, no drowning. Gaugings from float-runs are thought to have overestimated flows. One rating applied across period of record.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Mainly Upper Chalk and London Clay largely covered with Boulder Clay. Predominantly rural (mainly arable farming) but with urban development (N Chelmsford) just u/s of station.	Surface water abstraction, mainly for spray irrigation, some industrial purposes. Gw abstractions from confined Chalk aquifer for PWS and industrial activities.
37009	Brain at Guithavon Valley	60.7	TL8175314748	581753.0	214748.0	51°48'06.5960"N 0°38'04.6458"E	51.80183	0.63462	Brain	Guithavon Valley	16.2	EA-EA	037009	37	1962-01-01		EW	17.0	27.5	12.2	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1962-06-01	2023-09-30	0.397	0.091	1964-07-20	1964-07-27	15.1	2001-10-21	2001-10-21	0.16	0.222	0.279	0.667	0.989	0.67	22402	22402	100.0	1962-06-01		3.89	14.7	39.6	66.4	85.8	95.8	596	572	0.0392	0.6877	0.1406		0.1261	0.0435	0.6514	0.1685	0.0013	0.1335				1.0	0.2701		0.7299	0.3	0.534	0.997	24.2	36.43	28.7	36.0	11.6	28.26	14.02	64	105	0.23	14.7	60.27	0.484	1.103	0.0839	0.0566	0.709	0.811	0.0737	0.887	0.778			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	'Essex' profile gauging an elongated, predominantly rural, catchment on London Clay overlain with superficial deposits, with some artificial influences.	'Essex' profile (modified Flat V Crump) weir with throat tapping. Secondary instrument installed in 2003 to record non-modular flows.	Drowning occurs at very high levels but with limited non-modular flow. Station has throat tapping. Station prone to vandalism. One peak flow rating applied across period of record.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	London Clay with superficial deposits, mainly Boulder Clay and some sands and gravels. Predominantly rural, but some built-up areas (Braintree in mid-catchment and parts of Witham just u/s of station).	Runoff increased by effluent returns and reduced by industrial/agricultural abstraction.
37010	Blackwater at Appleford Bridge	247.3	TL8446315816	584463.0	215816.0	51°48'37.9350"N 0°40'28.0199"E	51.81054	0.67445	Blackwater	Appleford Bridge	14.6	EA-EA	037010	37	1962-01-01		FL	20.0	20.0	9.3	true	true	true	true	false	false	false	true	false	false	true	false	false	RPGI	1962-10-01	2023-09-30	1.324	0.088	1964-10-06	1964-10-06	46.1	2001-10-22	2001-10-22	0.352	0.574	0.838	2.45	3.96	0.57	22280	22256	99.892	1963-10-01		13.0	14.2	35.9	66.2	103.4	124.6	593	572	0.0703	0.7469	0.1193		0.0565	0.0618	0.7106	0.1807	0.0034	0.0415	0.2527			0.7473	0.1497	0.0005	0.8245	0.26	0.475	0.991	25.9	40.08	28.4	35.3	11.4	59.23	28.01	67	141	0.16	14.2	249.12	0.655	0.82	0.0977	0.0204	0.57	0.859	0.026	0.771	0.772			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a groundwater-influenced rural catchment with major artificial influences.	Double throated trapezoidal flume with throat tappings and a high flow rated spillway.	Spilling onto spillway stats at 1.80m, drowning starts at 1.2m (13.0 cumecs). Degree of drowning variable. Rating accounts for non-modular flow. One peak flow rating applied across period of record.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Irregular record from 01/10/1962. POT independence criteria applied to early (chart) record appears to require separation of 7 days. Exceptionally high flow recorded in Oct 2001, magnitude suspect as likely to have been affected by drowning. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	London Clay with Chalk in the headwaters, overlain with Boulder Clay and some sands and gravels. Rural, predominantly arable land.	Gw-influenced regime. Intermittently affected, since 1971, by Ely/Ouse Transfer Scheme pumping, significantly affected in the late 1980s and in the 1990s. Abstractions from both Chalk and gravel aquifers for PWS.
37011	Chelmer at Churchend	72.6	TL6288623350	562886.0	223350.0	51°53'05.6980"N 0°21'55.0903"E	51.88492	0.3653	Chelmer	Churchend	51.8	EA-EA	037011	37	1963-01-01		FL	9.0	10.0	17.0	true	true	false	true	false	false	false	true	true	false	false	false	false	I	1963-07-30	2023-09-30	0.36	0.013	2015-07-20	2015-07-20	14.5	2000-10-30	2000-10-30	0.049	0.091	0.146	0.789	1.4	0.43	21978	21971	99.968	1963-11-01		8.895	52.1	73.1	95.4	111.6	122.4	602	591	0.0841	0.7073	0.141		0.049	0.049	0.8074	0.1261	0.0004	0.016	0.136			0.864			0.8579	0.31	0.448	0.992	31.9	41.15	28.1	34.9	11.2	18.3	9.49	94	132	0.19	52.1	72.78	0.46	0.99	0.0595	0.0087	0.438	0.999	0.0121	0.657	0.954			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Good record of a responsive, rural catchment with mixed geology and with minor artificial influences.	Trapezoidal flume (with central division wall which commences above the lowest contraction) with throat recorder and spillway for flows over 1.42m. Secondary instrument to record non-modular flows installed in 2003.	Measures up to the 1 in 10 year flood (approx. 1.69m) above which bypassing occurs. Drowning is minimal but more gaugings required at higher flows to confirm rating. Two rating applied across period of record confirmed by gaugings to 1.58m.	The sudden drop in flow on 20/07/2015 may be due to works on Elmbridge Mill gates located downstream of Churchend at Little Easton. The periods of high flows from 2015/05/12 to 2015/05/16 and from 2015/06/05 to 2015/06/10 were probably cased by vandalism (dams on the weir) which often occurs in summer months. Missing data in September 2017 due to lightning strike which damaged telemetry and data logger. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Upland (for East Anglia) catchment at head of R. Chelmer. Upper quarter of catchment is Chalk, remainder is London Clay, both largely overlain with Boulder Clay. Rural, predominantly arable farming.	Responsive catchment. Some industrial/agricultural abstraction but minimal adjustments needed.
37012	Colne at Poolstreet	65.1	TL7710136407	577101.0	236407.0	51°59'52.2960"N 0°34'42.0489"E	51.99786	0.57835	Colne	Poolstreet	43.0	EA-EA	037012	37	1963-01-01		FL	7.0	5.0		true	true	false	true	false	false	false	false	false	false	false	false	false	GI	1963-11-27	2023-09-30	0.303	0.0	1973-08-02	1997-06-30	13.6	2003-01-01	2003-01-01	0.005	0.027	0.065	0.737	1.43	0.27	21858	21614	98.884	1963-10-24		9.78	43.5	63.3	82.6	99.6	113.6	605	574	0.0487	0.8335	0.0945		0.0226	0.0425	0.7894	0.1485		0.0189	0.6746			0.3254	0.1022		0.8978	0.29	0.403	0.992	26.4	43.9	28.3	35.0	11.1	15.4	8.01	82	89	0.19	43.6	64.49	0.449	1.034	0.0674	0.0064	0.409	0.836	0.0087	0.651	0.863	1963		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Located in upper part of the Colne, with very low to no flows in summer.	Trapezoidal flume with throat tapping. High flow spillway.	Flume is rarely non-modular. High flows spill onto a spillway (above 1.34m) and flows above wingwall height (1.6m) are estimated because of major bypassing. One peak flow rating applied across period of record.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Missing data in 2020 due to levels below the lower limit of the rating. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Upland (for East Anglia) catchment. Upper Chalk with London Clay present in southern half, all overlain with Boulder Clay and minor patches of sands and gravels. Rural, predominantly arable land.	Great Yeldham PWS borehole may influence flows, but unquantifiable. Period of Ely/Ouse Transfer Scheme pumping in 1982. Some industrial/agricultural abstraction.
37013	Sandon Brook at Sandon Bridge	75.1	TL7553405471	575534.0	205471.0	51°43'13.7622"N 0°32'23.4338"E	51.72049	0.53984	Sandon Brook	Sandon Bridge	19.8	EA-EA	037013	37	1963-01-01		EW	15.0	20.0	32.6	true	true	false	true	false	false	false	true	false	false	false	false	false	SRE	1963-09-01	2023-09-30	0.298	0.01	1965-07-18	1990-09-16	17.2	2016-06-23	2016-06-23	0.034	0.065	0.103	0.631	1.2	0.35	21945	21929	99.927	1964-01-01		8.8	19.5	35.2	53.1	70.7	110.9	585	575	0.0874	0.5831	0.2049		0.0759	0.1022	0.5015	0.2663	0.0002	0.0784				1.0	0.135		0.0454	0.28	0.275	0.855	24.2	46.7	31.8	38.9	12.1	16.68	9.24	52	33	0.17	19.5	74.7	1.574	1.013	0.0919	0.0181	0.547	0.927	0.0263	0.795	0.977	1991..1994		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Insensitive 'Essex' profile weir gauging a rural catchment with reservoirs affecting the regime.	'Essex' profile (modified Flat V Crump) weir with crest tapping.	Insensitive. One peak flow rating applied across period of record. Modular limit around 0.6m. All but highest flows contained. The flow is derived through the rating curve and then under non-modular conditions, a macro is applied within WISKI which applies a reduction factor. Therefore, under high flows, the stage and flow won't match through the modular rating. Subject to weed growth and siltation, particularly downstream.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected. Some float-run gaugings are thought to be unreliable. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	CA includes 13.7 sq.km draining to Hanningfield Reservoir 10km u/s. London Clay with sand and gravel over high ground in NE, Boulder Clay in S. Rural, mainly arable land with some grassland.	Reservoir(s) in catchment affect runoff. Naturalised flows (1963-1976) account for reservoir compensation water (0.011 cumecs) and storm overflows. Minor additions from industrial effluent.
37014	Roding at High Ongar	95.1	TL5617204100	556172.0	204100.0	51°42'50.0184"N 0°15'33.0133"E	51.71389	0.25917	Roding	High Ongar	41.0	EA-HNL	5420TH	37	1963-01-01		US	9.52	21.0	40.0	true	true	true	true	false	false	false	true	false	false	false	false	false	GI	1963-12-01	2023-09-01	0.52	0.0	1976-07-11	1976-07-14	14.3	2009-02-10	2009-02-10	0.024	0.063	0.141	1.22	2.31	0.34	21825	21822	99.986	1963-12-01		10.95	41.4	59.7	75.4	93.6	112.2	610	597	0.0579	0.7793	0.1197		0.0298	0.0428	0.8145	0.1233	0.0001	0.0163				1.0	0.0009		0.9974	0.31	0.403	0.986	18.4	46.46	29.9	38.0	11.2	31.35	15.73	76	130	0.17	41.4	92.64	0.779	1.012	0.1071	0.0086	0.406	0.978	0.0076	0.569	1.15			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Highest flow gauging station on the River Roding. Essex modified Flat V weir that was superceded by Ultrasonic time of flight due to repeated drowning.	Ultrasonic time of flight in an 11m section. Ultrasonic replaced Essex weir rating in November 2012. Essex weir used to maintain head for measuring cross section. Used for both water resource and flood warning/forecasting purposes.	Originally Essex weir superseded by Ultrasonic time of flight with the weir used to retain depth. Bypassing can also occur on both banks and can occur surprisingly quickly. Structure subject to drowning during high flows due to backwater effects from two d/s bridges. Heavy in-channel vegetation and surcharging of bridge soffit also influence drowning. Evidence that the modular limit has reduced over time due to the reduction in channel clearance and maintenance. Evidence of weir settlement discovered in 1991. Flows were corrected from 1987-91 to take account of this.	Levels can exceed bankfull and gauge is bypassed. Naturalised flows available between 1964 and 1976. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Generally low lying, largely impermeable (London Clay/glacial deposits), agricultural catchment with some industrial land use.	Responsive flow regime. Minimal net import into the catchment but flows are influenced by groundwater abstraction/recharge. Abstraction for industrial/agricultural purposes, particularly spray irrigation, can substantially deplete low flows.
37015	Cripsey Brook at Chipping Ongar	62.2	TL5483503526	554835.0	203526.0	51°42'32.7865"N 0°14'22.4831"E	51.70911	0.23958	Cripsey Brook	Chipping Ongar	41.7	EA-HNL	5427TH	37	1979-01-01		FV	25.0	2.5	33.3	true	false	false	false	false	false	false	true	false	false	false	false	false	SEI	1961-08-01	2023-09-30	0.389	0.0	1975-10-30	1975-11-10	33.7	2000-10-30	2000-10-30	0.024	0.054	0.107	0.918	1.61	0.29	22706	18738	82.524				42.1	60.9	79.5	96.5	114.6	620	609	0.0576	0.6747	0.1812		0.0703	0.0772	0.6613	0.2077	0.0002	0.0513				1.0	0.0654		0.6901	0.31	0.331	0.997	24.8	47.23	31.5	39.5	11.2	16.65	9.48	79	84	0.17	42.1	63.7	0.594	1.062	0.0813	0.0203	0.579	1.021	0.0233	0.721	0.988			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir located on Crispey Brook, a North London sub-catchment of the River Roding.	Flat V weir (5.6m broad) installed in 1981. It superseded a compound thin-plate weir of limited capacity.	Modular calibration - therefore over-estimation of flows during periods of drowned flow (e.g. autumn 2000 - exceptionally high flow on the 29th Oct.).	Most early flows truncated at around 2.5 cumecs. Flows missing (probably including POR minima) for much of 1976.	Predominantly impermeable catchment (London Clay but with extensive areas of glacial deposits). A rural catchment where agriculture is the primary land use.	Responsive flow regime. Sewage effluent is an important component of low flows. Impact of abstraction also evident on the hydrograph.
37016	Pant at Copford Hall	62.5	TL6686531314	566865.0	231314.0	51°57'19.0050"N 0°25'36.9054"E	51.95528	0.42692	Pant	Copford Hall	57.9	EA-EA	037016	37	1965-01-01		EW	12.0	12.0	29.7	true	true	true	true	false	false	false	true	false	false	false	false	false	RGI	1962-11-27	2023-09-30	0.398	0.001	1963-09-09	1976-08-26	12.9	2001-10-21	2001-10-21	0.018	0.061	0.132	1.13	1.55	0.41	22223	21822	98.196	1965-06-17		7.24	58.5	78.2	99.7	111.7	124.6	612	588	0.0622	0.7831	0.1084		0.0328	0.047	0.8214	0.1181	0.0002	0.0132	0.8803			0.1197	0.1295		0.8705	0.3	0.404	0.997	28.8	43.6	28.2	35.2	11.3	18.67	10.19	97	113	0.15	58.5	63.8	0.489	1.081	0.0692	0.0116	0.466	0.994	0.009	0.617	1.221	1964		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	'Essex' profile 5km d/s of the Great Sampford Outfall which is part of Ely/Ouse Transfer Scheme and has major impact on flows.	'Essex' profile (modified Flat V Crump) weir (insensitive) with crest tapping.	Measures up to 12.0 cumecs, flows above this are estimated because they spill on a spillway. One peak flow rating applied across period of record.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. First year of record rejected due to AMAX occurring during missing period. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10). Missing data in June 2022 due to repairs being carried out at the station.	Predominantly Upper Chalk largely overlain by Boulder Clay. Glacial gravels exposed along the whole river valley. Rural, predominantly arable land.	Intermittent pumping of Ely/Ouse Transfer Scheme has major effect on station, which is only 5km d/s of the Great Sampford Outfall. Some industrial/agricultural abstraction.
37017	Blackwater at Stisted	139.2	TL7929124292	579291.0	224292.0	51°53'18.0504"N 0°36'14.0422"E	51.88835	0.6039	Blackwater	Stisted	31.8	EA-EA	037017	37	1969-01-01		EW	18.0	15.0	17.8	true	true	false	true	false	false	false	true	false	false	false	false	false	RGEI	1969-06-01	2023-09-30	0.856	0.029	1994-09-05	1994-09-06	30.7	2001-10-21	2001-10-21	0.169	0.292	0.468	1.75	2.691	0.5	19845	19843	99.99	1969-10-01		14.1	32.7	59.6	85.2	108.1	124.6	604	579	0.0686	0.7483	0.1208		0.0538	0.0518	0.7257	0.1814	0.0001	0.0401	0.4484			0.5516	0.118		0.882	0.31	0.493	0.994	29.5	39.11	28.4	35.3	11.4	40.0	22.16	84	134	0.16	32.7	140.38	0.535	1.001	0.0688	0.0217	0.573	0.639	0.0255	0.765	0.551			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	'Essex' profile gauging a predominantly Chalk catchment affected by artificial influences including urban runoff and Ely Ouse/Essex scheme.	'Essex' profile (modified Flat V Crump) weir with crest tapping. No spillway.	Modest modular limit (around 0.62m) affected by weed growth. No spillway. VA rating for high flows. One peak flow rating applied across period of record. Some of the gaugings were based on float-runs and may not be reliable. Post-1979, flow is derived through the rating curve and then under non-modular conditions, a macro is applied within WISKI which applies a reduction factor. Therefore, under high flows, the stage and flow will not match through the modular rating. In the earlier record, however, adjustment for non-modularity appears to have been made by correcting the artifical elevation of stage, and these events therefore agree through the rating.	No POT data are presented for this station as they have no non-modular flow correction applied. AMAX data have been corrected, but in some cases can be below the daily flow as these are not corrected. Flows can be artificially increased by Ely Ouse transfer scheme (e.g. June 2015). Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Upper two-thirds of catchment are Chalk, remainder London Clay (exposed in valleys), all overlain with Boulder Clay and some glacial gravel. Mainly rural (arable predominates) but with Braintree urban area in lower valley, just u/s of station.	Urban runoff from Braintree. Minor adjustments needed for ground and surface water abstractions, sewage and industrial effluent and Ely Ouse/Essex discharges. Net effect - minor export of water.
37018	Ingrebourne at Gaynes Park	47.9	TQ5516386177	555163.0	186177.0	51°33'11.3284"N 0°14'11.9050"E	51.55315	0.23664	Ingrebourne	Gaynes Park	11.6	EA-HNL	5550TH	37	1970-01-01		EW	8.39	20.0	23.3	true	true	false	true	false	false	false	true	false	false	false	false	false	SEI	1970-11-01	2023-09-30	0.328	0.046	2007-07-17	2007-07-17	18.2	1974-11-21	1974-11-21	0.093	0.131	0.181	0.666	1.05	0.49	19327	19327	100.0	1970-11-01		7.366	8.7	29.0	64.9	94.3	117.3	609	594	0.1139	0.3609	0.2668	0.0021	0.2489	0.1302	0.261	0.3408		0.2636				1.0	0.0039		0.2906	0.27	0.283	0.985	43.3	45.45	31.1	37.9	11.1	17.36	9.78	62	204	0.09	8.7	44.73	0.394	0.854	0.0433	0.1157	0.78	0.834	0.1658	0.831	0.855			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Essex profile modified Flat V Crump weir situated in a rural headwater with artificial influences from urban land uses.	'Essex' profile (modified Flat V Crump) weir in 9.5m wide section. Non standard weir.	All but exceptional floods contained. Pressure tapping not maintained to the correct standard and is not used as often as it should be. Thus pressure tapping is unreliable. Model-based calibration assumes modularity; however, drowning occurs above about 7 cumecs. Rating estimates of flow thought to be reasonable. One peak flow rating applied across period of record.	Naturalised flow available for period 1970-75.	Largely impermeable catchment (London Clay/glacial deposits). Rural headwaters but substantial urban development around lower reaches.	Runoff increased by effluent returns but reduced by industrial/agricultural abstraction. Minor net augmentation of runoff through transfer from River Beam. Reservoir(s) in the catchment affect runoff.
37019	Beam at Bretons Farm	49.7	TQ5153385330	551533.0	185330.0	51°32'47.4807"N 0°11'02.2520"E	51.54652	0.18396	Beam	Bretons Farm	5.8	EA-HNL	5541TH	37	1965-01-01		EW	9.58	26.0	25.7	true	true	false	true	false	false	false	true	true	false	false	false	false	SEI	1965-07-01	2023-09-30	0.337	0.031	1976-08-22	1976-08-22	13.7	2016-06-23	2016-06-23	0.069	0.107	0.158	0.756	1.21	0.38	21276	21276	100.0	1965-07-01		8.607	5.8	13.7	35.1	77.8	103.9	597	588	0.0503	0.229	0.2511	0.0024	0.4431	0.0744	0.1209	0.2922	0.0005	0.5075				1.0	0.2724		0.1752	0.27	0.368	0.972	27.7	41.14	31.5	38.8	11.1	18.24	7.95	41	183	0.21	5.8	51.54	0.672	0.725	0.1143	0.2696	0.882	0.683	0.3391	0.91	0.672	1964..2000		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	An Essex modified Flat V Crump weir situated in a mainly rural headwaters with significant urban influences in lower reaches.	Essex (modified Flat V Crump) weir in 10.4m wide section. The weir is non-standard. Used for both water resource and flood risk management.	Model-based calibration assumes modularity and drowning is uncommon. Rating estimates of flow thought to be reasonable, gauged approaching QMED. One peak flow rating has been applied across the period of record. Levels are affected by Washlands gate and flap valve controlling flow into the Thames.	Naturalised flows available 1966-7, there is a very small net diminution in runoff. The site is prone to vandalism and data has been lost between 01/07/00 - 28/01/01 and 18/04/2020 - 01/06/2020. Peak flows rejected during WY2000/2001 due to the AMAX being recording at a neighbour station during this period. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A predominantly impermeable catchment. (London Clay exposed over much of the northern catchment with Claygate Beds, Bagshot Beds, Pebble Gravel and Boulder Clay capping the higher ground. Terrace gravels cover the London Clay in the southern half with narrow bands of London Clay and Alluvium bordering the river. Mainly rural headwaters with substantial expanding urban development in the lower reaches.	Runoff increased by effluent returns but reduced by industrial/agricultural abstraction. Flood storage lagoons built on the River Rom, from the late 1980s onwards, influence flows patterns.
37020	Chelmer at Felsted	132.1	TL6708819360	567088.0	219360.0	51°50'52.1959"N 0°25'27.7334"E	51.84783	0.42437	Chelmer	Felsted	40.1	EA-EA	037020	37	1970-01-01		EW	12.0	11.0	18.1	true	true	true	true	false	false	false	true	false	false	false	false	false	EI	1970-05-01	2023-09-30	0.735	0.063	1976-07-10	1976-07-10	24.8	2000-10-30	2000-10-30	0.154	0.242	0.338	1.45	2.67	0.48	19511	19502	99.954	1970-05-01		12.8	41.2	64.2	87.8	108.0	122.4	602	588	0.0691	0.7072	0.1506		0.0548	0.0441	0.7834	0.1363	0.0005	0.0338	0.0742			0.9258	0.0122		0.7461	0.31	0.468	0.982	29.6	40.13	28.5	35.1	11.2	26.53	12.9	86	136	0.17	41.2	133.45	0.491	0.965	0.0659	0.0122	0.5	0.828	0.0189	0.711	0.784			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	'Essex' profile gauging a rural, predominantly London Clay catchment with minor artificial influences.	'Essex' profile (modified Flat V Crump) weir with crest tapping.	Drowning commences at 0.6m, and varies in severity. Limit of reliable gauging is at 1.21m, higher flows estimated. Flood plain storage starts at 1.1m. No spillway. Hydraulic model used to derive rating for high flows. Reasonable fit to gaugings. One peak flow rating applied across period of record.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Chalk in N, London Clay elsewhere, largely overlain with Boulder Clay and some glacial gravel. Rural, agricultural land use, predominantly arable land.	Minimal abstractions, adjustments needed for STW and industrial effluent discharges.
37021	Roman River at Bounstead Bridge	52.6	TL9849320530	598493.0	220530.0	51°50'53.0380"N 0°52'49.4587"E	51.84807	0.88041	Roman River	Bounstead Bridge	4.6	EA-EA	037021	37	1965-01-01	1991-08-31	EW	3.0	9.0	24.4	true	false	false	false	false	false	false	false	false	false	false	false	false	GEI	1970-03-12	1991-08-31	0.229	0.035	1978-10-05	1978-10-05	7.86	1974-11-22	1974-11-22	0.065	0.102	0.138	0.393	0.59	0.59	7843	7841	99.974				5.5	28.2	37.6	55.5	68.3	570	560	0.0874	0.6347	0.1266		0.1338	0.0878	0.5833	0.2036	0.0177	0.1021				1.0	0.4872	0.0535	0.3114	0.23	0.602	0.973	20.8	40.63	27.8	35.0	10.9	18.06	8.61	39	120	0.16	5.5	52.53	0.694	1.009	0.1309	0.0381	0.619	0.816	0.0613	0.845	0.809			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	'Essex' profile that replaced a temporary weir in 1969, structure suffers from severe drowning.	'Essex' profile (modified Flat V Crump) weir with crest tapping from 11/03/1970, replaced originally a temporary broad-crested weir 03/1965-09/1969 with low flow V notch (data suspect).	Low modular limit (0.4m), problems with drowning. Weir is known to drown but rating fits well to gaugings up to 1.2m. Affected by weed growth and siltation Limited overspill starts at 0.35m (3.0 cumecs). One rating applied across period of record.	Data since 31/08/1991 not stored on NRFA due to continuing problems with drowning. Structure drowned from winter 1990/1991 to May 1992 and problems continue.	London Clay covered with glacial gravel and Boulder Clay in the upper third. Rural catchment in conservation area.	Gw-influenced regime. Runoff increased by effluent returns. Runoff reduced by industrial/agricultural abstraction.
37022	Holland Brook at Thorpe le Soken	54.9	TM1803021135	618030.0	221135.0	51°50'46.3781"N 1°09'50.3548"E	51.84622	1.16399	Holland Brook	Thorpe le Soken	0.8	EA-EA	037022	37	1970-05-01	2012-12-16	EW	9.0	22.0	60.2	true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1970-05-01	2012-12-16	0.292	0.001	1973-07-10	1990-05-29	32.6	2012-05-03	2012-05-03	0.01	0.033	0.077	0.531	0.98	0.34	15571	15456	99.261				5.6	17.8	24.7	33.9	38.1	562	555	0.0504	0.7391	0.1535		0.0469	0.0404	0.761	0.1642	0.0003	0.0316				1.0	0.0958		0.3196	0.23	0.479	0.994	16.8	40.19	28.0	36.1	10.9	15.57	7.94	25	136	0.16	5.6	54.98	0.846	1.092	0.1763	0.0127	0.486	0.883	0.013	0.667	0.717			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station heavily influenced by tide and with significant abstractions at low flows.	'Essex' profile (modified Flat V Crump) weir (very insensitive) with crest tapping.	Tidal influence very important, gauging limits variable due to d/s tidal conditions, with drowning starting at very low levels. Very gentle river gradient makes siltation a major problem, accompanied by weed growth.		London Clay with some Boulder Clay cover in NW. Rural, predominantly arable with some grassland.	Abstractions are significant at low flows.
37023	Roding at Loughton	269.0	TQ4413795572	544137.0	195572.0	51°38'25.7523"N 0°04'53.6790"E	51.64049	0.08158	Roding	Loughton	18.0	EA-HNL	5470TH	37	1971-01-01		US		35.0	22.2	true	false	false	false	false	false	false	true	false	false	false	false	false	SEI	1971-12-01	2023-09-30	1.627	0.02	2022-08-11	2022-08-12	38.7	2009-02-10	2009-02-10	0.104	0.252	0.482	4.33	7.8	0.32	18932	16761	88.533				18.0	45.2	72.8	93.9	116.9	611	605	0.0711	0.6842	0.1571	0.0006	0.0745	0.0815	0.6537	0.2091	0.0026	0.0508				1.0	0.0197		0.6964	0.29	0.336	0.99	28.8	46.81	31.1	39.2	11.2	55.12	27.47	71	116	0.09	18.0	265.98	0.688	1.056	0.0849	0.0204	0.577	0.75	0.0275	0.73	0.68			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauging station located in the mid reaches of the River Roding catchment.	An ultrasonic gauge has been operating at the site since the 05/02/2012. The gauge consists of 12 paths, in a cross configuration, installed in a trapezoidal concrete section just u/s of the crump weir. The system replaced the historic crump weir (single crest) that was installed in 1989; the modular limit was approx. 0.6m. (no tail or d/s levels recorded). C/m calibration, updated following gaugings taken during 2000 and 2002 floods. Prior to 1983: 'Essex' weir, subject to drowning.	The installation was commissioned for two reasons: to combat the regular occurrence of non-modular flow conditions that readily formed during high flows and secondly due to the extensive weed growth in this reach of the river that hampered measurement during low flows.	No flow data from 1982-88. High flow rating under review; treat flows with caution.	Predominantly impermeable catchment (London clay and glacial deposits). The main land use is agriculture but the catchment contains significant urban areas.
37024	Colne at Earls Colne	154.2	TL8551329784	585513.0	229784.0	51°56'08.2904"N 0°41'49.7847"E	51.93564	0.69716	Colne	Earls Colne	25.1	EA-EA	037024	37	1971-01-01		EW	15.0	14.0	20.1	true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1971-11-09	2023-09-30	0.721	0.048	1997-08-20	2016-09-14	27.7	2003-01-03	2003-01-03	0.097	0.197	0.307	1.49	2.644	0.43	18954	18909	99.763				24.5	52.0	75.1	93.2	113.6	602	568	0.0779	0.7465	0.1298		0.043	0.0742	0.6614	0.2259		0.0369	0.287			0.713	0.2505		0.7246	0.27	0.506	0.977	30.5	38.65	27.9	34.4	11.2	30.0	15.43	74	101	0.14	25.6	154.85	0.515	0.976	0.072	0.0143	0.564	0.669	0.0213	0.76	0.652			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a predominantly rural catchment with mixed geology and significant artificial influences, prone to siltation.	'Essex' profile (modified Flat V Crump) weir with crest tapping.	Prone to siltation. Flows are estimated when siltation severely affects response of station. Low modular limit - approx. 0.5m. No spillway.		Upper Chalk in N, London Clay in S, largely overlain with superficial deposits of Boulder Clay and Sands and gravels in the valley. Predominantly rural, dominated by arable land, but with some urban development in valley u/s of station.	Adjustments now needed for additions and abstractions.
37025	Bourne Brook at Perces Bridge	32.1	TL8225827549	582258.0	227549.0	51°54'59.8964"N 0°38'55.2700"E	51.91664	0.64869	Bourne Brook	Perces Bridge	40.7	EA-EA		37	1965-01-01	1973-12-31	TP			58.5	true	false	false	false	false	false	false	false	false	false	false	false	false	SI	1965-01-01	1973-12-31	0.119	0.011	1965-08-17	1970-08-15	1.002	1965-12-10	1968-09-16	0.024	0.045	0.064	0.275	0.45	0.49	3287	2982	90.721				37.6	61.4	78.2	91.7	100.4	608	565	0.0954	0.7407	0.1276		0.0276	0.0997	0.6339	0.2437		0.0175				1.0	0.0925		0.9075	0.29	0.523	0.91	22.9	38.83	27.8	34.1	11.7	14.46	7.6	77	133	0.17	37.7	31.61	0.463	1.062	0.0769	0.0054	0.3	0.969	0.009	0.631	0.85			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a rural, responsive tributary of R. Colne but with flows truncated at rating limit.	Compound V-notch thin-plate weir.	Rating limit of 0.6m (approx. 0.1 cumec) so high flows are truncated and water balance unrealistic.	Several large gaps in the flow record.	Rural tributary to the R. Colne.	Responsive regime.
37026	Tenpenny Brook at Tenpenny Bridge	29.0	TM0792820758	607928.0	220758.0	51°50'48.0550"N 1°01'02.3642"E	51.84668	1.01732	Tenpenny Brook	Tenpenny Bridge	4.1	EA-EA		37	1960-01-01	1976-12-31	TP		0.5	30.0	true	false	false	false	false	false	false	false	false	false	false	false	false	I	1961-11-01	1976-05-31	0.085	0.0	1965-06-03	1965-06-03	2.421	1964-03-15	1964-03-15	0.011	0.025	0.045	0.212	0.292	0.64	5326	5202	97.672				6.5	21.9	32.2	35.3	38.9	565	556	0.043	0.677	0.2036		0.0531	0.0492	0.7028	0.1948		0.0486				1.0	0.2867		0.7015	0.23	0.664	0.988	17.1	35.17	29.0	37.0	11.0	15.55	6.9	30	153	0.17	6.5	29.37	0.997	1.256	0.2089	0.0184	0.621	0.724	0.0148	0.829	0.621			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a rural catchment.	Thin-plate weir. Installed to monitor irrigation abstractions.		Several large gaps in the flow record.	Rural catchment on London Clay.
37027	Sixpenny Brook at Ship House Bridge	5.1	TM0544221395	605442.0	221395.0	51°51'11.9555"N 0°58'53.9852"E	51.85332	0.98166	Sixpenny Brook	Ship House Bridge	16.1	EA-EA		37	1960-01-01	1976-11-30	TP			30.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1960-06-01	1971-11-30	0.025	0.0	1962-07-24	1963-08-15	0.396	1964-03-15	1964-03-15	0.003	0.008	0.014	0.059	0.083	0.63	4200	3863	91.976				16.5	25.3	32.6	35.6	38.6	556	554	0.0473	0.7607	0.0973		0.0399	0.0393	0.8283	0.0556	0.036	0.025				1.0	0.0845		0.9155	0.23	0.658	1.0	15.6	35.03	28.3	36.3	10.9	6.41	3.34	31	149	0.19	16.5	6.79	0.931	1.21	0.1806	0.0122	0.622	1.058	0.009	0.721	1.049			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a rural catchment and monitoring abstractions for irrigation.	Thin-plate weir. Installed to monitor irrigation abstractions.		Until 1967 stages were recorded with Bristol instruments (circular charts). Discrepancies were reported between gauge board readings and Bristol readings.	Rural catchment on London Clay.	Significant gw abstraction for irrigation.
37028	Bentley Brook at Saltwater Bridge	12.1	TM1092619303	610926.0	219303.0	51°49'56.9825"N 1°03'35.6250"E	51.8325	1.0599	Bentley Brook	Saltwater Bridge	2.1	EA-EA		37	1960-01-01	1976-06-30	TP			30.0	true	false	false	false	false	false	false	false	false	false	false	false	false	I	1960-07-01	1976-06-30	0.034	0.0	1961-07-28	1976-06-30	0.883	1964-03-15	1964-03-15	0.003	0.012	0.02	0.076	0.108	0.63	5844	5386	92.163				5.1	20.0	24.8	32.5	36.5	558	550	0.0249	0.709	0.1716		0.0705	0.0294	0.7833	0.1175		0.0678				1.0	0.0404		0.8758	0.23	0.637	0.979	14.4	35.72	28.8	36.2	11.0	8.95	3.75	25	169	0.27	5.1	12.25	0.933	1.176	0.2064	0.0304	0.55	0.871	0.0234	0.683	0.86			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a rural catchment and monitoring abstractions for irrigation.	Thin-plate weir. Installed to monitor irrigation abstractions.		Until 1967 stages were recorded with Bristol instruments (circular charts). Discrepancies were reported between gauge board readings and Bristol readings.	Rural catchment on London Clay.	Monitors gw abstraction for irrigation.
37029	St Osyth Brook at Main Road Bridge	8.0	TM1344915989	613449.0	215989.0	51°48'06.4259"N 1°05'39.8973"E	51.80178	1.09442	St Osyth Brook	Main Road Bridge	3.3	EA-EA		37	1960-01-01	1976-12-31	FL		1.3		true	false	false	false	false	false	false	false	false	false	false	false	false	N	1960-08-01	1976-05-31	0.032	0.0	1960-08-03	1975-07-25	1.15	1964-03-15	1964-03-15	0.0	0.006	0.01	0.085	0.139	0.39	5783	5631	97.372				7.2	13.2	21.3	24.7	27.5	554	544	0.0862	0.6918	0.1852		0.0231	0.078	0.7355	0.1708	0.0018	0.0086				1.0	0.0196		0.4685	0.23	0.396	0.974	10.7	43.06	28.1	35.0	11.1	6.94	3.44	20	183	0.34	7.2	7.73	1.115	1.151	0.2541	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a rural catchment and monitoring abstractions for irrigation.	Thin-plate weir. Installed to monitor irrigation abstractions.		Until 1967 stages were recorded with Bristol instruments (circular charts). Discrepancies were reported between gauge board readings and Bristol readings.	Rural catchment on London Clay.	Monitors gw abstraction for irrigation.
37031	Crouch at Wickford	71.8	TQ7481193386	574811.0	193386.0	51°36'43.7836"N 0°31'24.0445"E	51.61216	0.52335	Crouch	Wickford	5.8	EA-EA	037031	37	1962-01-01		C VA	40.0	1.3	27.5	true	true	false	true	false	false	false	true	false	false	false	false	false	E	1976-07-01	2023-09-30	0.341	0.01	1993-07-01	1993-07-01	29.1	2021-01-14	2021-01-14	0.043	0.076	0.125	0.734	1.35	0.27	17258	17182	99.56	1962-01-30		15.1	5.8	15.5	32.1	68.2	116.5	594	571	0.1006	0.3108	0.2077		0.3779	0.1017	0.269	0.2448		0.3808				1.0	0.0228		0.0012	0.27	0.218	0.969	29.6	49.21	31.5	38.0	11.9	16.01	8.07	37	86	0.24	5.8	70.15	0.836	0.859	0.1431	0.1416	0.772	1.021	0.2438	0.885	0.987	1962..1994		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a low-lying catchment.	Crump weir and a rated channel for high flows. Station is approaching tidal limit.	Crump weir has very small fall because approaching tidal limit. Rated channel for high flows calibrated by current meter and float measurements (2.85m high). Low modular limit. Rating confirmed by gaugings to 1.2m. One rating applied across period of record.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Low lying, undulating terrain. London Clay, negligible superficial deposits. Urban areas (Basildon, Billericay) make up about third of catchment, particularly developed in S. Remaining area in N of catchment is mixed farming.	Responsive regime. Significant urban runoff from Billericay and Basildon. Low flows heavily influenced by STW discharge.
37033	Eastwood Brook at Eastwood	10.4	TQ8585688875	585856.0	188875.0	51°34'05.2031"N 0°40'49.0654"E	51.56811	0.6803	Eastwood Brook	Eastwood	12.1	EA-EA	037033	37	1975-07-01		MIS	20.0		50.6	true	true	false	true	false	false	false	true	false	false	false	false	false	E	1975-10-01	2023-09-30	0.049	0.002	1990-08-05	2009-09-26	2.88	2013-08-24	2013-08-24	0.006	0.013	0.021	0.115	0.182	0.3	17532	16935	96.595	1974-03-26		5.024	12.9	22.4	44.0	69.0	83.2	570	555	0.1052	0.0737	0.1316		0.6895	0.117	0.0011	0.196		0.686				1.0	0.1274		0.1277	0.21	0.34	0.995	29.6	45.14	31.4	37.9	12.5	7.94	3.73	45	63	0.45	12.9	9.85	0.517	0.708	0.0797	0.3059	0.849	0.927	0.4113	0.928	0.942	1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging full range of a very responsive, totally urbanized catchment on an industrial estate on the outskirts of Southend.	Non-standard weir, insensitive at low flows, however, a good stepped fall, so no drowning. In 1996, replaced original weir decommissioned in April 1995 (hence missing data). New weir is a replica of previous structure, non-standard flat V weir. Telemetry was installed at the beginning of 1997.	Full range station, all events within bank. Rapid response means peak levels can be missed by the 15 min telemetry readings. One rating applied across period of record. Weir not expected to drown with rating form confirmed by hydraulic modelling.	High flows on 12 and 13/09/2003 (not seen at surrounding sites) are the result of a burst water main within the catchment. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Small, low-lying. Underlying geology is London Clay, some superficial deposits. Totally urbanised catchment on an industrial estate on the outskirts of Southend.	Very flashy, composed almost entirely of urban runoff. Runoff increased by effluent returns.
37034	Mar Dyke at Stifford	90.7	TQ5961980384	559619.0	180384.0	51°29'59.4939"N 0°17'53.6456"E	51.49986	0.29823	Mar Dyke	Stifford	5.2	EA-EA	037034	37	1974-01-01	2021-10-12	EW			28.2	true	false	false	false	false	false	false	false	false	false	true	false	false	GEI	1974-10-11	2021-10-11	0.835	0.002	1975-07-02	1975-07-02	121.0	2003-01-01	2003-01-01	0.044	0.076	0.122	1.59	4.08	0.16	17168	16426	95.678				4.2	7.9	18.8	62.3	118.7	589	561	0.0759	0.519	0.2601	0.0001	0.1405	0.0872	0.5128	0.2765	0.0077	0.1049				1.0	0.0535		0.1415	0.27	0.311	0.983	22.9	44.46	30.5	37.8	11.4	18.66	9.98	26	194	0.15	4.2	90.01	1.702	0.833	0.2996	0.036	0.742	0.999	0.0574	0.845	1.052			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a tributary of The Thames with catchment partly below the sea level, affected by weed growth and low modular limit. Station closed as of 01/10/2021. The site has suffered from bad non-modularity for some time now and the decision was made to stop recording flow. Various reasons for the non-modular flows include reduced maintenance downstream and the tidal influence downstream. This is now a level recording only site for flood warning purposes only.	'Essex' profile (modified Flat V Crump) weir with d/s tapping.	Low modular limit, degree of drowning variable: backs up from tidal gates 3km d/s. Reverse flow possible. Mar Dyke flood alleviation measures have widened channel and increased height of the banks; only overtopped in extreme events. Suffers from summer weed growth.	Some large gaps in the record around 1990 to 2004.	G: Runoff influenced by groundwater abstraction and/or recharge. E: Runoff increased by effluent returns. I: Runoff reduced by industrial and/or agricultural abstraction.
37038	Wid at Margaretting	98.6	TL6719200020	567192.0	200020.0	51°40'26.6496"N 0°24'59.6947"E	51.67407	0.41658	Wid	Margaretting	36.1	EA-EA		37	1951-01-01	1974-12-31	MIS		15.0		true	false	false	false	false	false	false	false	false	false	false	false	false	SREI	1951-04-01	1974-01-31	0.519	0.0	1952-07-15	1955-08-15	11.16	1969-03-13	1969-03-13	0.034	0.136	0.241	1.228	1.982	0.42	8342	6820	81.755				36.7	53.1	72.2	92.6	117.0	608	594	0.0994	0.5501	0.1737	0.0002	0.1714	0.1095	0.4654	0.2451		0.1774				1.0	0.0007		0.3473	0.27	0.236	0.995	24.9	47.69	31.8	38.7	11.7	19.86	10.63	72	73	0.18	36.7	98.07	0.607	0.976	0.0845	0.0558	0.691	0.98	0.0871	0.865	0.999			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station gauging a mainly rural catchment developed on London Clay with some significant artificial influences.	Sharp-edged trapezoidal weir with central rectangular notch. Closed and replaced by Writtle (37007) about 6km d/s.	Weir becomes non-modular at relatively low flow (2.8 cumecs). Up to 9.6 cumecs acts as rated section with approximate rating determined by current meter readings. Some bypassing known to occur well before this flow.	Several large gaps and truncated flows in the record, especially before 1964.	London Clay catchment, mainly rural although with urbanized parts (Brentwood at top of catchment).	Flows influenced by abstractions and effluent returns.
38001	Lee at Feildes Weir	1036.0	TL3907409193	539074.0	209193.0	51°45'50.9520"N 0°00'49.9951"E	51.76415	0.01389	Lee	Feildes Weir	27.7	EA-HNL	5290TH	38	1879-05-10		MIS	51.68	40.0	38.3	true	true	false	false	true	true	false	true	true	true	true	true	true	PGEI	1879-05-10	2023-09-30	4.436	0.0	1933-09-03	1949-10-16	118.0	1947-03-16	1947-03-17	0.617	1.74	2.78	8.57	14.93	0.6	52739	52729	99.981	1851-11-01		44.56	25.5	63.6	98.7	137.1	226.1	636	630	0.1091	0.5502	0.1863		0.1483	0.0973	0.5439	0.2155	0.0012	0.139	0.7051			0.2949	0.1982	0.0715	0.5214	0.29	0.565	0.952	36.5	34.05	30.8	38.3	10.9	64.71	29.56	99	151	0.11	25.5	1045.1	0.556	0.889	0.0701	0.0574	0.715	1.152	0.0772	0.854	1.112	1916		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Located in the middle reaches of the River Lee, this station is marked by a complex history of changes to channel controls and bypassing.	Historically the station was a 29m wide thin-plate weir (found to be insensitive) and 3 vertical-lift sluices controlling a parallel flood relief channel. The weir is immediately downstream of the confluence of the rivers Lee and Stort. Building started in 1976 and it completed in 1978 to improve hydrometric range and precision. Pre-1976 there was a barrage of gates/sluices (operation evident on hydrographs, pre-1930 especially) to control flows. From 1/1/97, flows normally the sum of stations 38027 (Stort at Glen Faba) and 38031 (Lee at Rye Bridge). In 2004 flow calculation changed to using a combination of weir and gate levels rather than summation. An ultrasonic station was built d/s and opened on the 01/01/2008.	All flows (bar lockages) now contained but Ryemeads STW effluent bypasses the station. Flood flows on the Lee can cause reverse flows on Stort. Flows up to about 4.7 cumecs discharge over the weir; higher flows enter a flood channel. One rating applied across period of record. Weir rated using a physical model, with flood channel flows computed separately.	Occasional erratic performance of the two u/s stations (summed for total flow) can impact on the precision of Feildes Weir flows. Early peak flow data from the 1850s are estimates. Naturalised flows (New River abstraction only) from 1883. Gauging instigated by Beardmore during the 1850s (flood of October 1857 estimated as >250 cumecs, greatly exceeding any subsequent event). Annual calendar year maximum GDFs thereafter. This flow was particularly uncertain. Until 1931, GDFs were calculated as the mean of three daily readings recorded by lock keeper. Chart record from March 1932. Low flows probably under-estimated during this period (especially pre-1930). Measured peak flows post 1965. Station was out of commission in 1976, Naturalised flows have been modelled between March 1976 to April 1978 by EA. The quality of the record improved after these dates. Mill operation could produce particularly low flows in the early record (e.g. on Sundays).	A mainly pervious (Chalk) catchment with extensive Drift cover. Predominantly rural headwaters with significant urban growth in lower valley.	Runoff reduced by abstraction for industry, agriculture and pws. Significant gw abstraction, with net export from catchment. Runoff increased by effluent returns. Effluent from Rymeads STW bypasses measuring structure, as does lockage from the Lee Navigation.
38002	Ash at Mardock	78.7	TL39361484	539360.0	214840.0	51°48'53.3629"N 0°01'13.0633"E	51.81482	0.0203	Ash	Mardock	36.4	EA-HNL	5080TH	38	1939-01-01		FV	7.56	13.0	24.3	true	true	true	true	false	false	false	true	false	false	false	false	false	GI	1980-06-03	2023-09-30	0.285	0.014	1997-09-15	1997-09-30	11.3	2001-10-21	2001-10-21	0.04	0.082	0.13	0.563	1.03	0.53	15825	15825	100.0	1980-07-01		6.694	36.9	68.7	93.3	119.8	140.5	629	619	0.0831	0.6962	0.1834		0.0349	0.0801	0.6823	0.2184		0.0189	0.6428			0.3572	0.1452		0.7749	0.31	0.505	1.0	34.5	35.75	31.5	38.8	11.2	24.92	12.79	93	165	0.21	36.9	78.0	0.423	0.941	0.0489	0.0134	0.475	0.77	0.0138	0.676	0.847	1979		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir that is located in the lower Ash catchment.	Flat V weir (1:10 cross-slope) 3.9m wide, constructed in 1979. The current station replaced the original hump flume weir that was built in 1939. The old station was not good due to the obstruction caused by the old gate at the mill bypass channel. It was insensitive, subject to bypassing and was inaccurate at low flows. Hence discharges was assessed at the d/s station at Easneye (38005).	No rating available for original hump flume weir. Remains modular and is virtually full range. Rating is valid from 1981 - theoretical standard Flat V calculation, extended in January 2012, using modelled flow to account for stages 0.9mASD to 3mASD. Peak flow rating is reasonably accurate. Some bypassing is known to occur at extreme flows. One peak flow rating across period of record.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Solid geology of Upper Chalk extensively overlain by boulder clay, glacial sands & gravel and alluvium in the valleys. Rural catchment in character.	Baseflow dominated regime but significant runoff generated from the clays in the headwaters. U/s lake storage, sluice activity and gw abstractions for industry/agriculture have a minor effect on flows.
38003	Mimram at Panshanger Park	133.9	TL2825613276	528256.0	213276.0	51°48'12.3280"N 0°08'28.5846"W	51.80342	-0.14127	Mimram	Panshanger Park	47.1	EA-HNL	4790TH	38	1952-01-01		FL			6.6	true	true	true	true	false	true	false	true	true	true	true	true	true	GI	1952-12-01	2023-09-30	0.526	0.135	1976-08-19	1976-08-21	2.43	1993-10-13	1993-10-13	0.218	0.389	0.485	0.816	0.97	0.93	25871	25871	100.0	1952-12-01		2.01	48.2	82.4	122.7	154.4	193.0	641	656	0.126	0.5647	0.1826		0.1263	0.1076	0.5407	0.2335	0.0018	0.116	0.9703			0.0297	0.1478	0.3597	0.0968	0.3	0.72	0.985	44.2	27.49	30.0	38.1	10.6	32.06	16.81	121	134	0.18	48.2	130.2	0.295	1.009	0.0498	0.0431	0.661	0.857	0.0649	0.838	0.781			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located in the lower catchment of the River Mimram.	Critical-depth flume; 5m wide. All flows are contained.	One rating applied across period of record. Rating is reasonably accurate, though overestimates flow. Theoretical calibration confirmed by gaugings but computed flows may be slightly overestimated by as much as 10%. The gauge was reviewed in 2014.	Frequent discharges caused by fish farm are eliminated to produce naturalised flows. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A predominantly permeable catchment (Upper Chalk overlain by glacial deposits near headwaters). Mainly rural but substantial urban growth in the lower valley - the Mimram drains Welwyn Garden City.	Appreciable net export of water. Considerable gw abstraction for industry & agriculture occurs in the headwaters. Very high baseflow component but peak flows increasing due to urbanisation. AMAX is commonly recorded during the summer half-year.
38004	Rib at Wadesmill	136.5	TL3599017444	535990.0	217444.0	51°50'20.5834"N 0°01'39.1429"W	51.83905	-0.02754	Rib	Wadesmill	47.1	EA-HNL	4980TH	38	1959-01-01		FL+C	13.49	30.0	12.0	true	true	true	true	false	false	false	true	false	false	false	false	false	GI	1979-10-01	2023-09-30	0.507	0.013	1997-08-20	1997-08-21	18.2	1993-10-13	1993-10-13	0.088	0.194	0.282	0.902	1.61	0.6	16071	16023	99.701	1979-10-01		11.619	46.5	82.2	114.2	139.6	167.7	646	625	0.0771	0.7281	0.1592		0.035	0.0727	0.7542	0.1457	0.0011	0.0261	0.9388			0.0612	0.1262		0.7645	0.3	0.47	0.999	38.4	38.01	31.7	38.9	11.2	30.41	19.55	112	163	0.15	46.5	136.78	0.493	0.947	0.0539	0.0127	0.512	0.829	0.0147	0.714	0.895			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound structured gauging station located in the lower Rib catchment.	Non conforming Trapezoidal flume operated as a rated section with a Crump weir on the overflow channel.	One rating applied across the POR. Reasonable fit to gaugings although evidence suggests rating underestimates flow slightly. Modular calibration has applied during rare periods of drowned flow.	All except highest floods contained. GDF data available (1957-83) for d/s limited range station (Rib at Herts Training School - 38006). Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Solid geology Upper Chalk, extensively overlain by boulder clay; glacial sands and gravel in the valleys. Predominantly a rural catchment. Significant runoff generated from the towns of Buntingford and Thundridge as well as clays high up the catchment.	A flashy regime. Flows influenced by significant groundwater abstractions for industrial and agricultural purposes (net export).
38005	Ash at Easneye	85.2	TL380138	538000.0	213800.0	51°48'20.9348"N 0°00'00.5942"E	51.80582	1.7E-4	Ash	Easneye	32.0	EA-HNL		38	1960-01-01	1981	TP		5.3	20.0	true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1960-03-01	1981-12-09	0.317	0.013	1974-01-01	1974-01-04	11.3	1974-11-13	1974-11-13	0.062	0.105	0.156	0.614	1.1	0.55	7954	7878	99.045				32.6	64.1	91.1	119.1	140.5	627	618	0.0837	0.705	0.1752		0.0338	0.0803	0.6931	0.2086		0.0176	0.6527			0.3473	0.1534		0.7729	0.3	0.509	1.0	34.8	35.54	31.4	38.5	11.1	27.41	14.27	91	167	0.2	32.6	84.65	0.432	0.936	0.0497	0.0124	0.475	0.863	0.0128	0.675	0.931			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A compound thin-plate weir that was superseded by the Ash at Mardock (38002).	Compound thin-plate weir that was reconstructed in 1976 to increase flow range. It was decommissioned in 1981 and was superseded by the Ash at Mardock (38002).		It was subject to bypassing and was inaccurate at low flows.	Solid geology of Upper Chalk extensively overlain by boulder clay, glacial sands & gravel and alluvium in the valleys. Rural catchment in character.
38006	Rib at Herts Training School	148.1	TL335158	533500.0	215800.0	51°49'29.5626"N 0°03'51.4534"W	51.82488	-0.06429	Rib	Herts Training School	40.8	EA-HNL		38	1956-01-01	1982-12-31	TP		2.2	12.3	true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1956-10-01	1982-07-31	0.614	0.031	1976-08-26	1976-08-26	22.7	1968-09-16	1968-09-16	0.133	0.235	0.334	1.133	1.911	0.58	9435	9018	95.58				39.7	77.7	112.6	138.7	167.7	645	625	0.0796	0.716	0.1676		0.0361	0.075	0.7446	0.1528	0.001	0.0261	0.9193			0.0807	0.1254		0.7734	0.3	0.474	0.999	39.2	37.71	31.6	38.7	11.2	34.0	21.56	110	164	0.17	39.7	148.66	0.493	0.949	0.0541	0.014	0.523	0.788	0.0144	0.704	0.918			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound rectangular thin-plate weir that was superseded by the Rib at Wadesmill (38004).	Compound rectangular thin-plate weir (c. 3 metres wide). The structure was used for measuring low flows while high flows were measured u/s by the Rib at Wadesmill (38004). The station was decommissioned in the early 1980s (when 38004 became the primary station).			Solid geology Upper Chalk, extensively overlain by boulder clay; glacial sands and gravel in the valleys. Predominantly a rural catchment. Significant runoff generated from the towns of Buntingford and Thundridge as well as clays high up the catchment.	Flows influenced by significant gw abstractions for industrial and agricultural purposes (net export).
38007	Canons Brook at Elizabeth Way	21.4	TL4316610394	543166.0	210394.0	51°46'26.0911"N 0°04'25.0934"E	51.77391	0.07364	Canons Brook	Elizabeth Way	37.5	EA-HNL	5189TH	38	1965-10-01		FL	8.96	11.3	32.0	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1953-10-01	2023-09-30	0.172	0.014	1953-10-01	1954-06-27	5.37	1978-05-05	1978-05-05	0.033	0.057	0.085	0.376	0.603	0.39	25567	25528	99.847	1953-06-01		7.502	39.0	58.9	72.8	97.5	107.4	611	601	0.1038	0.2223	0.2224		0.4183	0.0975	0.1675	0.2666		0.468				1.0	0.2669		0.4777	0.31	0.353	0.988	29.3	45.9	31.8	39.0	11.1	7.82	4.33	75	335	0.38	39.2	20.76	0.344	1.033	0.0523	0.173	0.757	0.876	0.248	0.831	0.908			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located in the lower region of Canons Brook before it joins the Stort. It is an important (>50 yr) urban time series.	Full range critical-depth flume in rectangular section. Between the years 1965 to 1980, low flows were monitored at a (less sensitive) Crump weir that was in series with the flume.	3 limb power law rating based on the theory of flumes applied since flume became only form of measurement in 1979. Single rating across the period of record. Rating extends to 11 cumecs but majority of gaugings taken at low flows. Performance at low flows is poor, with flows being overestimated. However at medium to high flows gaugings suggest flow is underestimated. Further gaugings are required in the medium to high flow range.	Low flow record since 1979 thought to be inaccurate due to insensitive control. Uncertainty in the medium to high flow record due to lack of calibration gaugings. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	The catchment geology is impervious dominated by London Clay. Rural headwaters but heavily urbanised d/s.	Balancing resevoirs in Harlow (and the New Town development itself) influence the flow pattern but there are no significant abstractions or discharges. Natural to within 10% at Q95.
38011	Mimram at Fulling Mill	98.7	TL2264616944	522646.0	216944.0	51°50'15.5216"N 0°13'16.6648"W	51.83764	-0.2213	Mimram	Fulling Mill	66.1	EA-HNL	4770TH	38	1955-01-01		C		1.7	70.0	true	true	false	true	false	false	false	true	false	false	false	false	false	G	1955-08-01	2023-09-30	0.21	0.0	1976-08-10	2019-11-16	2.44	1993-10-13	1993-10-13	0.011	0.119	0.18	0.379	0.485	0.94	24898	24898	100.0	1955-08-01		0.442	65.7	99.2	130.8	157.1	193.0	644	658	0.1062	0.6378	0.1822		0.0734	0.0893	0.6175	0.2251	0.0022	0.0658	1.0				0.0577	0.4653	0.0234	0.3	0.74	0.981	43.0	25.98	29.9	38.1	10.6	23.84	11.75	130	134	0.2	65.7	99.25	0.278	1.022	0.0501	0.0292	0.684	1.136	0.0366	0.805	1.173			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir located on the mid reaches of the River Mimram.	Crump profile weir, 2.75m wide, built in the mid 1970s. Originally the station was comprised of two complementary thin-plate weirs. Prior to 1993, gauging was a sum of flows through the mill weir and a leaky wooden weir. The station was not used as a full gauging station from 07/1984. It was used solely for low flows for licence purposes from 09/1984 to 05/1990. The data was processed but not archived during this period. However, due to demand, the site came back online in 1990 and the data was stored.	Standard crump weir rating that extends to 2.5 cumecs. The station was not designed for peak flow measurement and is insensitive at low flows.	Accurate at modular flow, but large discrepancies at non-modular flow (> 0.18m). Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Chalk catchment (with overlying glacial deposits in some areas). Predominantly rural.	Flows substantially diminished by gw abstractions (Three Valleys Water plc) with a considerable net export of water. The weir drowns easily possibly due to seasonal weed growth (cut prior to 1993). It has not been possible to remove weeds due to a Brown Trout (Salmo trutta) conservation project that was initiated in 1993.
38012	Stevenage Brook at Bragbury Park	36.0	TL2748821164	527488.0	221164.0	51°52'28.1406"N 0°08'58.2057"W	51.87448	-0.1495	Stevenage Brook	Bragbury Park	71.4	EA-HNL	4827TH	38	1956-01-01		FV	3.0	3.9	60.0	true	false	false	false	false	false	false	true	false	false	false	false	false	SG	1974-04-01	2023-09-30	0.092	0.001	2022-07-19	2022-09-01	7.15	2003-11-25	2003-11-25	0.009	0.019	0.031	0.231	0.389	0.23	18080	18075	99.972				65.9	85.8	100.7	129.2	144.7	631	634	0.093	0.2423	0.1967		0.465	0.0881	0.1883	0.2325		0.4889	1.0				0.4261	0.2811	0.0175	0.3	0.663	0.968	31.7	31.1	30.5	38.0	10.7	11.78	5.41	105	124	0.18	65.9	35.1	0.343	1.028	0.0639	0.1837	0.744	1.086	0.2806	0.896	1.092			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir located on the Stevenage Brook, a tributary of the River Beane and sub-catchment of the River Lee in North London.	Flat V weir - 2.75m wide. It was constructed in 1974 to supersede the original broad-crested weir operated by Stevenage Development Corporation.		Flow records prior to 1974 are sporadic and of poor quality. The weir remains modular up to 4.1 cumecs. Higher magnitude floods uncorrected, including the notable November 2003 peak flow.	A chalk catchment now largely urbanised.	Gw abstractions significantly reduce runoff and the release of water from flood storage lagoons can influence the flashy flow regime.
38013	Upper Lee at Luton Hoo	70.7	TL11781859	511780.0	218590.0	51°51'16.9788"N 0°22'42.2548"W	51.85472	-0.3784	Upper Lee	Luton Hoo	98.0	EA-HNL	4640TH	38	1960-01-01	2013-05-12	TP B	3.78	4.0	10.6	true	false	false	false	false	false	false	false	false	false	true	false	false	G	1960-07-01	2013-05-12	0.265	0.0	1960-07-01	2012-04-19	19.3	2008-11-23	2008-11-23	0.0	0.085	0.19	0.591	0.792	0.64	19309	19082	98.824				97.4	116.2	134.5	162.8	226.1	657	660	0.0552	0.222	0.1861		0.5299	0.0417	0.2492	0.163	0.0023	0.5404	1.0				0.1288	0.0296	0.0274	0.3	0.87	0.946	39.9	13.77	29.6	37.4	10.2	21.23	11.13	138	70	0.09	97.4	70.31	0.427	1.09	0.0819	0.2784	0.826	0.953	0.3346	0.915	0.95			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station that is located in the Upper Lee catchment.	The station has been replaced by a d/s site; the Upper Lee at Luton East Hyde (38033). The station was closed on the 12/05/2013. Rectangular thin-plate weir (0.92m wide) plus and insensitive broad-crested overfall weir (10m wide) for flows > 0.33 cumecs. The side weir has a removable board(s) that have at times been removed with knowledge of measuring authority. The small side weir was re-built in January 1989. The large weir then operated at a stage of 0.223m not at the original 0.304m level.	One rating applied across period of record. Derived theoretically and matched to a very few check gaugings.	Only very high floods, such as September 1968, exceed the capacity of the overfall weir. The time series is to be used with caution, pre-1966 data particularly. A stoplog may be used to regulate lake levels and this can result in spurious zero flows.	A Chalk catchment (with Drift) now substantially urbanised.	There is storage capacity in Luton Hoo lakes and the station is d/s of the outfall from an ornamental lake. Flows are substantially reduced as a result of gw abstractions (significant export). Considerable interludes of zero flow, occasionally interrupted by small sluice releases (above the thin-plate weir). Some surface water drainage from Luton bypasses the gauge via the East Hyde STW.
38014	Salmon Brook at Edmonton	20.5	TQ3436193703	534361.0	193703.0	51°37'33.9962"N 0°03'37.1708"W	51.62611	-0.06033	Salmon Brook	Edmonton	12.4	EA-HNL	5357TH	38	1956-01-01		FV	6.01	15.0	60.0	true	false	false	false	false	false	false	true	true	false	false	false	false	P	1956-03-27	2023-09-30	0.157	0.004	2020-09-19	2020-09-19	5.35	2000-10-29	2000-10-29	0.015	0.037	0.061	0.379	0.639	0.29	24659	24465	99.213				15.6	28.6	62.6	93.7	128.5	654	665	0.1342	0.1925	0.2408	0.001	0.4284	0.098	0.2483	0.268		0.3817				1.0	0.3604		0.0123	0.29	0.258	0.978	48.3	47.34	32.9	41.9	10.9	12.67	6.9	62	101	0.33	15.6	22.87	0.484	0.602	0.0567	0.2168	0.884	0.703	0.2933	0.94	0.706			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located on Salmon Brook, a tributary that enters the lower River Lee system in North London.	Flat V weir (1:10 cross-slope), 5m wide (insensitive at low flows) in a slightly trapezoidal section. It superseded a less effective (particularly at very low flows) compound broad-crested structure in 1980.	Backing-up behind the d/s culvert can (rarely) result in drowning during flood conditions.		Impervious (London Clay) catchment. Salmon Brook rises on Enfield Chase and in the lower reaches the catchment is heavily urbanised.	No significant abstractions or discharges are associated with Salmon Brook. Very similar minimum flows occurred during the 1964 and 1959 droughts.
38015	Intercepting Drain at Enfield	7.4	TQ355932	535500.0	193200.0	51°37'16.7420"N 0°02'38.6704"W	51.62132	-0.04408	Intercepting Drain	Enfield	9.6	EA-HNL		38	1969-01-01	1980-12-31	FL		10.0	27.5	true	false	false	false	false	false	false	false	false	false	false	false	false		1969-02-01	1982-08-07	0.109	0.008	1969-06-15	1969-06-22	2.247	1974-11-21	1974-11-21	0.036	0.056	0.072	0.208	0.314	0.51	4936	4353	88.189				12.5	17.0	22.3	39.8	68.5	615	629	0.0152	0.0087	0.1487		0.8166	0.0031	0.0042	0.1797		0.8069				1.0	0.8187		0.0245	0.29	0.545	0.99	11.8	40.09	32.7	40.5	10.7	8.25	4.64	26	131	0.53	12.5	14.81	1.372	0.846	0.2977	0.5149	0.9	0.993	0.6736	0.944	0.994			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A gauging station located in the Salmon Brook catchment of the River Lee system, North London.	Trapezoidal flume installed as part of the Lower Lee Monitoring Programme.			The catchment is located in a highly urbanised area.	Very responsive regime, with clear urban runoff signal. Runoff is surface drainage from the heavily built-up areas of Edmonton and Enfield. Parts of the high flows from the Sadlers Mill Stream, are diverted to the Intercepting Drain. This additional flow substantially enhancing the runoff.
38016	Stansted Springs at Mountfitchet	20.5	TL5004324738	550043.0	224738.0	51°54'03.5557"N 0°10'46.0248"E	51.90099	0.17945	Stansted Springs	Mountfitchet	12.4	EA-HNL	5106TH	38	1974-01-01		TP	0.11		16.6	true	false	false	false	false	false	false	true	false	false	false	false	false	G	1969-06-01	2023-09-30	0.056	0.0	1992-08-12	1998-01-05	0.755	2014-02-07	2014-02-07	0.007	0.041	0.055	0.091	0.101	0.96	19845	19638	98.957																																																						gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A largely rural based gauging station within the north eastern part of the Thames Basin.	Two complementary thin-plate weirs (rectangular and 90 degree V notch) measuring spring flow discharging to the River Stort. The V notch weir was rebuilt in 1989 and new rating table used.		Very stable discharge but station can be overwhelmed in exceptional floods. 21/10/2001 peak triggered by >90mm storm.	The contributing area to the chalk springs is mainly rural. The hydrological catchment cannot be readily determined hence runoff is not representative.	Significant local gw abstraction producing substantial net export of water.
38017	Mimram at Whitwell	39.1	TL18412121	518410.0	221210.0	51°52'36.8261"N 0°16'52.6343"W	51.8769	-0.28129	Mimram	Whitwell	88.1	EA-HNL	4730TH	38	1970-01-01		C	0.26	0.5	55.0	true	false	false	false	false	false	false	true	true	false	false	false	false	G	1970-06-01	2023-09-30	0.083	0.0	1992-09-01	2019-09-22	0.467	1993-10-13	1993-10-13	0.014	0.053	0.077	0.15	0.182	0.97	19480	19480	100.0				86.2	114.8	140.9	160.0	193.0	645	651	0.1214	0.6923	0.1613		0.0249	0.1032	0.6755	0.2071	0.0025	0.0113	1.0				0.0008	0.3617		0.3	0.855	0.982	48.3	15.59	29.5	37.8	10.6	15.6	7.8	138	119	0.18	86.2	38.4	0.266	1.089	0.0486	0.0099	0.543	0.791	0.0083	0.647	0.927			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the upper Mimram catchment.	Crump weir, 1.0m crest (rather insensitive) within wider section.	All flows are contained and are modular.	Dry for over three months in late 1997.	A predominantly pervious (Chalk), rural catchment. Hydrological catchment divide is uncertain.	Generally stable flow regime, sustained from Chalk springs. Low flows are occasionally augmented by pumping from local tube wells but overall runoff is significantly reduced by gw abstraction. U/s cress-beds can influence low flow pattern.
38018	Upper Lee at Water Hall	150.0	TL29980995	529980.0	209950.0	51°46'23.2996"N 0°07'03.1050"W	51.77314	-0.11753	Upper Lee	Water Hall	43.6	EA-HNL	4690TH	38	1971-01-01		C			12.9	true	true	false	true	false	false	false	true	false	false	true	false	false	GEI	1959-04-01	2023-09-30	1.243	0.243	1976-08-23	1976-08-23	9.98	1968-09-16	1968-09-16	0.489	0.824	1.07	2.07	2.57	0.82	23559	23525	99.856	1952-11-01		7.05	43.9	74.9	116.6	153.1	226.1	653	663	0.1232	0.3186	0.2097		0.3438	0.1106	0.3004	0.2533	0.0031	0.3293	0.8839			0.1161	0.285	0.0961	0.1346	0.3	0.686	0.932	40.5	27.39	30.0	37.8	10.4	47.49	23.43	114	93	0.11	43.9	157.74	0.409	1.081	0.0696	0.1624	0.795	1.333	0.1998	0.907	1.303	1958		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located in the Upper Lee catchment above the confluences of tributary rivers.	Crump weir approximately 6m wide. Present station built in October 1971 to replace two temporary stations at Waterhall Farm and Roxford Farm. River course altered for gravel works and current station was built within this new artificial section.	Modular throughout the flow range. Standard Crump weir calculation. Theoretical rating has a reasonable level of accuracy. Approach channel can become heavily choked with vegetation and has to be regularly managed.	All flows contained. Some early data (of limited quality) from two nearby gauging stations. There was a station on the River Lee at Roxford (38801) which, started in November 1952. In order to produce a single record, some correlations were undertaken between these stations. They had an overlapping record from September 1971 to August 1972. These were compared and a formula was used to derive Water Hall values. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Catchment is mainly pervious (Chalk) but with glacial Drift in the headwaters. The land uses are principally agricultural with some important (expanding) urban centres.	Luton STW effluent augments flows and strongly effects the low flow regime. Moderate net import of water.
38019	Salmon Brook at Montague Road	33.9	TQ354932	535400.0	193200.0	51°37'16.8285"N 0°02'43.8674"W	51.62134	-0.04552	Salmon Brook	Montague Road	9.0	EA-HNL		38	1971-01-01	1981-12-31	FL		4.4	25.0	true	false	false	false	false	false	false	false	false	false	false	false	false	P	1971-10-01	1976-01-31	0.144	0.006	1973-09-09	1973-09-10	4.176	1974-09-27	1974-09-27	0.016	0.034	0.057	0.344	0.616	0.27	1584	1097	69.255				12.5	19.7	59.0	92.4	128.5	650	661	0.1214	0.1725	0.2264	0.0016	0.4738	0.0875	0.2217	0.2504		0.4368				1.0	0.4289		0.011	0.29	0.296	0.98	44.0	46.39	32.9	41.7	10.8	14.07	7.66	58	105	0.35	12.6	25.63	0.654	0.499	0.0901	0.2542	0.895	0.69	0.3425	0.942	0.696			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station was located on the Salmon Brook and has been decommissioned since 1981.	Trapezoidal flume. The station was decommissioned in 1981.		The structure drowned regularly. The flow record is short and the data is of poor quality.	The catchment is located in a highly urbanised area.
38020	Cobbins Brook at Sewardstone Road	38.4	TQ3871099982	538710.0	199982.0	51°40'53.3178"N 0°00'17.8244"E	51.68148	0.00495	Cobbins Brook	Sewardstone Road	17.2	EA-HNL	5329TH	38	1971-01-01		FL		19.9	50.0	true	true	true	true	false	false	false	true	false	false	false	false	false	P	1971-06-12	2023-09-30	0.209	0.0	2020-08-11	2022-07-20	11.8	2000-10-29	2000-10-29	0.009	0.022	0.048	0.507	0.976	0.23	19104	18224	95.394	1971-06-01		7.402	19.0	35.2	74.0	103.1	116.9	609	616	0.1214	0.5543	0.1677	0.0007	0.1377	0.1569	0.4804	0.2548		0.1059				1.0			0.2073	0.29	0.223	0.997	44.4	49.52	32.8	40.5	11.1	13.76	7.75	71	254	0.14	19.0	38.78	0.45	0.66	0.058	0.0378	0.799	0.736	0.0514	0.823	0.768	1970		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	This station, opened in June 1971, is on a small tributary of the River Lee within a suburban area. The station has a relatively large capacity gauging structure and has a flow record in excess of forty years.	Trapezoidal critical-depth flume with an overall width of 10m.	Drowning and damage to the exit transition (repaired in 1992) influences the performance of the station. Two ratings have been applied across the POR. The most recent is valid from October 1982. This post M25 construction rating was derived by hydraulic modelling (Halcrow). It includes backwater effects from the M25 culvert (350m d/s of the station) and a double pipe crossing (500m d/s). Two existing ratings are very similar up to 1m.	The gap in the record from June 1982 to May 1983 inclusive was due to the building of the M25 motorway; flows could not be estimated as the river was diverted through two pipes which were too small for the purpose. In January 1992 repairs were carried out to the exit transit which was damaged and affecting performance. There is also a gap of 2 months - August & September 1994 - for repairs to the weir. Recorded flows may be overestimates and the structure is insensitive at low flows.	Cobbins Brook drains an impervious (London Clay) catchment which includes part of Epping Forest. Substantial urban development occurs in the vicinity of the gauging station but this constitutes a small percentage of the overall catchment landuse.	The net impact of PWS abstractions and discharges on the natural responsive flow pattern is minimal. M25 motorway runoff can, however, be significant. In 2010 a large flood storage area was built near Cobbins Brook to protect Waltham Abbey and so will reduce flood peaks at Sewardstone Road.
38021	Turkey Brook at Albany Park	42.2	TQ35989850	535980.0	198500.0	51°40'07.7776"N 0°02'06.3157"W	51.66883	-0.03509	Turkey Brook	Albany Park	16.6	EA-HNL	5349TH	38	1971-01-01		FV		16.8	60.0	true	true	false	true	false	false	false	true	false	false	false	false	false	PG	1971-09-01	2023-09-30	0.199	0.001	1991-09-10	1991-09-11	7.47	2009-02-09	2009-02-09	0.009	0.024	0.048	0.496	0.928	0.22	19023	19023	100.0	1971-09-01		6.959	18.8	40.5	77.9	116.5	127.3	662	667	0.2324	0.3232	0.2879	0.0005	0.1544	0.226	0.2665	0.3711	0.0004	0.1344				1.0	0.3124		0.1405	0.29	0.242	0.948	55.3	47.94	30.8	39.7	10.9	14.4	9.27	78	119	0.25	18.9	41.49	0.427	0.711	0.0441	0.0439	0.697	0.836	0.0709	0.877	0.869	1970		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located on a small tributary of the River Lee that has flow record of over fifty years. It is located within an suburban area with relatively low rainfall.	Flat V weir, 6m wide, situated within but at the end of a concrete-lined channel, the river then flows into a restored naturalised reach through an urban park.	Structure operates in accordance with theory of Flat V weirs. Tailwater recorder proves a high modular limit, however since the river restoration works in March 2021 this has reduced. Very few gaugings to prove theoretical rating.	The structure remains unaltered from its original design other than occasional repairs for damage sustained to the weir crest resulting from vandalism. Level data and rating available for 1972 to 1979 data. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A largely impervious catchment (Tertiary clays and glacial deposits). The headwaters drain Enfield Chase but there is significant urban development near the gauging station. Mix of land use is typical of much of the English Lowlands.	Very responsive flow regime. Minor net export due to gw abstractions. Abstractions for pws. Large ornamental lake in headwaters. Levels occasionally affected by the new river overspill at Maidens Bridge.
38022	Pymmes Brook at Edmonton Silver Street	42.6	TQ34059254	534050.0	192540.0	51°36'56.6398"N 0°03'54.9358"W	51.61573	-0.06526	Pymmes Brook	Edmonton Silver Street	11.1	EA-HNL	5369TH	38	1972-01-01		C	22.57	33.1	42.0	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1954-05-01	2023-09-30	0.45	0.04	1969-09-12	1969-09-12	9.8	2000-10-29	2000-10-29	0.101	0.178	0.256	0.947	1.43	0.47	25355	25355	100.0	1954-05-01		19.5	12.9	28.3	65.5	95.4	135.0	673	672	0.0967	0.0368	0.1366	0.0039	0.7251	0.0621	0.023	0.1735		0.7401				1.0	0.257		0.0499	0.29	0.243	0.975	40.4	47.98	33.9	43.7	10.9	16.04	8.08	65	93	0.31	13.0	40.55	0.506	0.655	0.0681	0.4232	0.89	0.876	0.5774	0.929	0.884	1953		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located on the Pymmes Brook with a catchment dominated by urban land use.	Crump weir (crest width 6.16m) in a concrete trapezoidal channel. Installed in 1972 a few metres upstream of the original station (Alcazaar 38025). The original station was commissioned in 1954 and operated as a rated section.	Theoretical crump weir formula used to calculate flows since the weir was built. Crest tapping and tail levels suggest the weir remains modular throughout the flow range. Station performs well at low flows but too few gaugings at mid to high flows to confirm levels of uncertainty.	Original rating superseded in 1963 by a new discharge table and the old records were corrected. This was replaced in 1981 by one which took into account the trapezoidal nature of the channel. Data from November 1972 to 1981 was recalculated and the new rating was adopted since 1982. Flows corrected for weir drowning since 1982. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Impervious (London Clay) catchment. Pymmes Brook rises on Enfield Chase but the catchment is now dominated by urban land use.	Pre-1965 runoff substantially enhanced by sewage effluent (now treated outside the catchment). Currently no significant abstractions or discharges. Natural to within 10% at Q95.
38023	Lee flood relief at Low Hall	1243.0	TQ3566888039	535668.0	188039.0	51°34'29.6390"N 0°02'37.1183"W	51.5749	-0.04364	Lee flood relief	Low Hall	4.7	EA-HNL	5380TH	38	1974-01-01		C			76.4	true	false	false	false	false	false	false	true	false	false	true	false	false		1980-01-01	2023-09-30	2.48	0.0	1989-06-04	2009-09-06	112.0	2000-10-30	2000-10-30	0.066	0.224	0.618	6.24	11.3	0.23	15979	15673	98.085				6.3	47.1	92.1	133.6	226.1	633	630	0.1201	0.5057	0.1916	0.0004	0.1706	0.1117	0.4916	0.2292	0.001	0.1578	0.5872			0.4128	0.1925	0.0596	0.4748	0.29	0.525	0.891	37.0	35.94	30.9	38.4	10.9	91.1	49.9	92	150	0.12	6.3	1254.92	0.749	0.826	0.085	0.0678	0.746	0.94	0.0916	0.863	0.924			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located in the lower Lee Valley.	Crump weir 17.1m broad (insensitive) located within a concrete flood relief channel.		Combination of flows with the Lee at Lea Bridge (38032) provides total outflow of the Lee into the tidal Thames.	A mainly pervious (Chalk) catchment with extensive Drift cover. Predominantly rural headwaters; significant urban growth in lower valley.	The distribution of flows in the R. Lee and the flood channel controlled by sluices at Chalk Bridge. Discharge is a factor in the operational control of the tidal barrier at Bow Creek.
38024	Small River Lee at Ordnance Road	41.5	TQ37049887	537040.0	198870.0	51°40'18.8204"N 0°01'10.6485"W	51.67189	-0.01962	Small River Lee	Ordnance Road	15.3	EA-HNL	5339TH	38	1973-01-01		FV		21.2	22.9	true	false	false	false	false	false	false	true	false	true	false	false	true	G	1973-01-01	2023-09-30	0.29	0.006	2022-08-12	2022-08-14	8.04	2000-10-30	2000-10-30	0.054	0.12	0.182	0.591	0.88	0.48	18535	18504	99.833				14.5	20.1	43.1	90.6	115.6	625	642	0.145	0.17	0.2885		0.3798	0.1504	0.1326	0.357	0.0005	0.3424				1.0	0.3598		0.1907	0.29	0.477	0.839	31.0	40.99	31.2	39.0	10.9	14.15	7.75	50	110	0.53	17.8	40.46	1.917	0.558	0.1945	0.1555	0.834	0.635	0.2056	0.91	0.681			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located in the lower reaches of the River Lee catchment.	Flat V weir (1:10 cross-slope), 8m wide. Crest tapping does not operate effectively.		Subject to drowning.	A predominantly impervious (clay), catchment with substantial superficial cover. Suburban in the valley, rural headwaters with considerable woodland.	Responsive regime. Minor impact of artificial influences on flows, low discharges affected by gravel workings and pumped drainage from the M25 can be important.
38025	Pymmes Brook at Alcazar	41.4	TQ340925	534000.0	192500.0	51°36'55.3886"N 0°03'57.5891"W	51.61539	-0.066	Pymmes Brook	Alcazar	13.8	EA-HNL		38	1954-01-01	1974-12-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1954-05-01	1974-07-31	0.525	0.04	1969-09-12	1969-09-12	7.504	1956-10-01	1956-10-01	0.097	0.198	0.396	1.048	1.557	0.53	7397	7306	98.77				13.0	28.3	65.5	95.4	135.0	673	672	0.0968	0.0368	0.1366	0.0039	0.725	0.0621	0.023	0.1736		0.7401				1.0	0.2567		0.0499	0.29	0.243	0.975	40.4	47.99	33.9	43.7	10.9	15.99	8.02	65	93	0.31	13.1	40.53	0.503	0.655	0.0678	0.423	0.89	0.876	0.5773	0.929	0.884			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located on the Pymmes Brook, a tributary of the River Lee, that has been decommissioned since 1974.	Formalised rectangular section rated by c/m.		Limited accuracy. Minimum flows during the dry autumn of 1969. Notable 1965 peak is unconfirmed but was triggered by a storm of >50mm.
38026	Pincey Brook at Sheering Hall	54.6	TL4953512702	549535.0	212702.0	51°47'34.7530"N 0°10'00.7422"E	51.79299	0.16687	Pincey Brook	Sheering Hall	43.1	EA-HNL	5169TH	38	1974-01-01		FV		16.8	40.0	true	false	false	false	false	false	true	true	false	true	false	false	true	SPI	1974-08-01	2023-09-30	0.281	0.005	1976-07-08	1976-08-27	7.74	2000-10-30	2000-10-30	0.025	0.061	0.118	0.666	1.13	0.42	17958	17955	99.983				45.3	67.4	81.0	99.5	110.5	617	599	0.0932	0.6497	0.1778		0.0686	0.0925	0.6302	0.1815		0.0916				1.0	0.011		0.989	0.31	0.387	0.984	24.0	46.91	31.0	38.8	11.3	21.07	10.49	82	215	0.1	45.3	52.68	0.609	1.017	0.0894	0.0129	0.427	1.263	0.0268	0.658	1.34			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located on a tributary of the River Stort. Flow regime affected by abstractions and irrigation.	Flat V weir (1:10.9 cross-slope) 4.02m wide. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Bypassing occurs at high flows (e.g. Oct 2001 flood). Flows > 17 cumecs exceed the capacity of the structure. At tail recorder was added in February 2011, to account for issues with non-modular flow. Non-modularity may have been increasing during the period of record. Flows derived from standard Flat V calculation. Rating is accurate, though more gauging is required to validate high flow range (no current meter readings above 0.6m). All flow is within bank, but by-passing does occur during floods.	Data for period of record re-processed to correct for non-modularity. In the peak flow data, this correction has only been applied for 1982 onwards. For the daily flow data relevant modern levels of non-modularity were utilised to derive reprocessed flows.	Pervious (Chalk) headwaters, mainly London Clay in lowest reaches. Land use mainly agricultural but the Pincey Brook drains Stansted Airport and Hatfield Forest.	Flows reduced by public water supply abstraction. Spray irrigation can be significant (especially in the upper part of the catchment). Balancing ponds at Stansted Airport provide some headwater regulation.
38027	Stort at Glen Faba	280.2	TL3915609271	539156.0	209271.0	51°45'53.4019"N 0°00'54.3822"E	51.76483	0.01511	Stort	Glen Faba	26.4	EA-HNL	5190TH	38	1976-01-01		US	18.48			true	false	false	false	false	false	false	true	false	false	false	false	false	GI	1985-02-07	2023-09-30	1.397	0.046	1990-08-07	2022-08-15	36.9	2000-10-30	2000-10-30	0.239	0.505	0.757	2.86	4.95	0.49	14115	14108	99.95				25.5	57.0	81.6	110.0	144.0	620	605	0.1047	0.5659	0.1869		0.1288	0.086	0.5943	0.1826	0.0002	0.1328	0.2398			0.7602	0.1865		0.7815	0.31	0.494	0.966	28.2	37.43	31.1	38.9	11.1	48.73	23.25	83	190	0.07	25.8	283.58	0.658	0.866	0.0831	0.0419	0.663	0.72	0.0637	0.799	0.73			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The ultrasonic gauging station is located in the lower River Stort, a tributary in the upper River Lee catchment.	Multi-path US (cross-path), superseded a single-path device.	All but exceptional floods contained. Very low velocities (canalised river) hampered calibration.	Some early dmfs estimated due to instrumentation malfunction.	Chalk headwaters, London Clay dominates lower catchment (considerable Drift cover). Rural upper catchment, substantial urban development (including Harlow & Bishops Stortford) in the valley.	Limited net impact of artificial influences but substantial gw abstraction in headwaters (a proportion is exported).
38028	Stansted Brook at Gypsy Lane	25.9	TL5053724047	550537.0	224047.0	51°53'40.7271"N 0°11'10.7681"E	51.89465	0.18632	Stansted Brook	Gypsy Lane	60.5	EA-HNL	5129TH	38	1977-01-01		FV		5.5	40.0	true	false	false	false	false	false	false	true	false	false	true	false	false	SPG	1964-11-06	2023-09-30	0.075	0.0	1992-07-24	2022-08-15	4.04	2001-10-21	2001-10-21	0.011	0.023	0.035	0.154	0.265	0.45	21513	21082	97.997				62.0	82.1	97.2	109.8	122.1	626	609	0.1631	0.5232	0.2072		0.0916	0.1153	0.5667	0.2388	0.0023	0.0738	0.3924			0.6076	0.4755		0.5245	0.31	0.652	0.989	29.0	25.98	30.0	38.8	11.1	9.48	4.95	96	222	0.15	62.0	26.37	0.395	1.038	0.059	0.0223	0.539	0.584	0.0352	0.797	0.548			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located on Stansted Brook in a largely rural catchment that contains Stansted Airport.	Flat V weir (1:10 cross-slope) in slightly trapezoidal channel (3.5m wide).	The weir is modular and all flows are contained.	Some early data (from 1964) available for a limited-range weir d/s.	Mixed geology with clear west-east contrast. Chalk dipping occur below Eocene clays and there is extensive Drift cover. Largely rural but with substantial urban development above the catchment outlet.	Stable discharge at very low flows, due to spring outflows, but is subject to artificial disturbance. Very few abstractions in the catchment but flows are influenced by motorway runoff and an u/s storage lagoon at Stansted Airport. Lagoon sluice closures can result in occasional zero flows.
38029	Quin at Griggs Bridge	50.4	TL3912524786	539125.0	224786.0	51°54'15.2984"N 0°01'15.2024"E	51.90425	0.02089	Quin	Griggs Bridge	67.3	EA-HNL	4939TH	38	1978-01-01		FV		11.5	30.0	true	false	false	false	false	false	false	true	false	false	false	false	false	G	1978-05-01	2023-09-30	0.141	0.002	1997-11-22	1997-11-26	13.6	2001-10-21	2001-10-21	0.016	0.041	0.06	0.247	0.538	0.45	16589	16589	100.0				68.2	96.5	119.4	138.7	158.0	649	625	0.0573	0.7869	0.137		0.0184	0.063	0.7956	0.1253	0.0019	0.0143	1.0				0.0845		0.7622	0.29	0.454	0.998	34.7	39.39	32.1	39.4	11.3	16.48	9.11	118	194	0.18	68.2	50.4	0.483	1.0	0.0547	0.0038			0.0077	0.603	0.819			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A gauging station located in the lower River Quin catchment that is located within the River Lee system.	Flat V weir, 4.5m wide. Shallow depth of approach.	Calibration assumes station is not subject to drowning.		A mainly impervious catchment with extensive glacial deposits overlying Chalk. Agricultural land use predominates but there is some urban development close to the gauging station.	Net export of water has increasing from the mid-1980s. Gw abstractions can be especially significant during droughts e.g. late-1990. Stable baseflow but responsive to storm events; sewage effluent discharge pattern also sometimes detectable.
38030	Beane at Hartham	175.1	TL3250313143	532503.0	213143.0	51°48'04.4640"N 0°04'47.1564"W	51.80124	-0.07977	Beane	Hartham	35.4	EA-HNL	4890TH	38	1979-01-01		FV		24.4	16.3	true	false	false	false	false	false	false	true	false	false	false	false	false	PG	1979-08-01	2023-09-30	0.573	0.116	2006-08-01	2006-08-01	19.0	1993-10-13	1993-10-13	0.186	0.345	0.451	0.947	1.32	0.76	16132	16132	100.0				37.9	73.0	107.3	132.9	151.7	641	631	0.1085	0.595	0.1665		0.1288	0.0983	0.5495	0.223	0.0003	0.128	0.9605			0.0395	0.1513	0.0732	0.43	0.3	0.538	0.992	39.0	37.04	30.5	37.6	10.9	31.76	18.11	104	156	0.17	37.9	173.85	0.434	0.901	0.0552	0.0504	0.682	1.036	0.0729	0.867	1.053			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the lower River Beane within the River Lee catchment.	Flat V weir, 8m wide.	All flows are contained. Modular throughout the flow range; theoretical calibration adopted.		Solid geology: Chalk substantially overlain by boulder clay, glacial sands and gravel. Mainly rural but contains Stevenage, also moderate urban development close to the catchment outfall.	Substantial baseflow but the Drift cover (and urban areas) provide a rapid runoff response to storms. Significant gw abstractions (particularly in the headwaters); moderate net export of water.
38031	Lee at Rye Bridge	758.3	TL38520983	538520.0	209830.0	51°46'12.0516"N 0°00'22.0274"E	51.77001	0.00612	Lee	Rye Bridge	29.2	EA-HNL	5280TH	38	1993-08-01		US	51.0			true	false	false	false	false	false	false	true	false	false	true	false	false	PGI	1993-08-04	2023-09-30	3.201	0.129	2019-09-17	2019-09-17	68.9	1993-10-13	1993-10-13	0.567	1.46	2.213	6.26	9.34	0.69	11015	11015	100.0				26.1	67.8	108.0	141.7	226.1	642	640	0.1108	0.5463	0.186		0.1537	0.1016	0.5269	0.2279	0.0015	0.1395	0.8819			0.1181	0.2006	0.0985	0.425	0.3	0.591	0.947	39.6	32.79	30.6	38.0	10.8	63.27	30.34	105	144	0.14	26.3	758.52	0.51	0.916	0.0646	0.0629	0.728	1.218	0.0821	0.87	1.187			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The ultrasonic gauging station is located in the upper River Lee catchment.	Multi-path, cross-configuration US. It is located 0.4km u/s of Feildes Weir and it provides a check on a major component of the Lee at Feildes Weir (38001) flows.		Sensibly continuous record.	A mainly pervious Chalk catchment. Predominantly rural headwaters. Significant urban growth in the lower valley.	Flows occasionally exceed bankfull but gate operation at Feildes Weir greatly restricts overbank flow. Station is bypassed by separately monitored outflows from Ryemead STW.
38032	Lee at Lea Bridge	1364.0	TQ3517787240	535177.0	187240.0	51°34'04.2154"N 0°03'03.7153"W	51.56784	-0.05103	Lee	Lea Bridge	8.0	EA-HNL	5390TH	38	1992-01-01		US				true	false	false	false	false	false	false	true	false	false	true	false	false		1992-07-22	2023-09-30	5.587	0.2	1996-08-07	1996-08-07	54.9	2009-02-10	2009-02-10	3.1	4.0	4.61	8.76	11.9	0.74	11393	10509	92.241				4.8	36.7	89.1	132.2	226.1	634	632	0.1168	0.4685	0.188	0.0006	0.2145	0.1067	0.4556	0.2247	0.001	0.2031	0.5383			0.4617	0.2085	0.0546	0.4416	0.29	0.51	0.897	36.6	36.67	31.1	38.8	10.9	93.33	49.0	88	140	0.13	4.8	1368.89	0.829	0.773	0.0935	0.0999	0.801	0.724	0.1323	0.886	0.725			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The ultrasonic gauging station is located in the lower River Lee catchment, close to the confluence of the River Thames.	Multi-path, cross-configuration US. Combined with input of the Lee flood relief channel (at Low Hall - 038023), represents total inflow into the River Thames from the River Lee.		Occasional anomalous behaviour at very low flows.	A mainly pervious (Chalk) catchment with extensive Drift cover. Predominantly rural headwaters. Substantial urban growth in lower valley.	Runoff reduced by New River abstraction (see the Lee at Feildes Weir - 38001).
38033	Upper Lee at Luton East Hyde	71.24	TL1194618235	511946.0	218235.0	51°51'05.3733"N 0°22'33.9951"W	51.85149	-0.37611	Upper Lee	Luton East Hyde	96.1	EA-HNL	4641TH	38	2009-04		VA				true	false	false	false	false	false	false	true	false	false	false	false	false	SG	2009-04-20	2023-09-30	0.137	0.0	2011-04-19	2022-10-22	2.59	2012-06-11	2012-06-11	0.001	0.012	0.054	0.36	0.531	0.48	5277	5237	99.242				96.1	116.0	134.4	162.7	226.1	657	660	0.0605	0.2241	0.1846		0.5241	0.0481	0.2484	0.1643	0.0022	0.5335	1.0				0.1271	0.0333	0.027	0.3	0.867	0.947	40.1	14.07	29.6	37.4	10.2	21.73	11.47	138	70	0.1	96.1	71.24	0.425	1.091	0.0814	0.2755	0.825	0.964	0.3302	0.914	0.963			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is a replacement of the former upstream gauging station, the Upper Lee at Luton Hoo (38013).	The station is a replacement of the d/s gauging station, the Upper Lee at Luton Hoo (38013). It is a rated section located 400m d/s of the old structure.	Rated section (using a control section) within an existing channel.	Insensitive at very low flows. Significant periods of near zero flow.	A Chalk catchment (with Drift) that is heavily urbanised.	The station is located d/s of the outfall from an ornamental lake (with storage capacity) at Luton Hoo Park. It is also located above a significant discharge from a STW. Flows are substantially reduced as a result of gw abstractions. The catchment has substantial amounts of urbanisation resulting in rapid run-off and a flashy response.
39001	Thames at Kingston	9948.0	TQ17786985	517780.0	169850.0	51°24'55.5949"N 0°18'27.7558"W	51.41544	-0.30771	Thames	Kingston	4.7	EA-T	3400TH	39	1883-01-01		US	450.0			true	true	true	true	false	true	false	true	true	true	true	true	true	SRPGEI	1883-01-01	2023-09-30	65.323	0.01	1976-08-27	1976-10-11	800.0	1894-11-18	1894-11-18	7.54	21.6	40.1	161.0	217.0	0.63	51407	51407	100.0	1883-01-01		316.11	3.4	50.4	99.7	181.8	330.2	724	706	0.1609	0.3562	0.3217	0.0045	0.1404	0.1338	0.393	0.3402	0.01	0.1142	0.4318	0.0973	0.2196	0.2513	0.142	0.0744	0.0717	0.3	0.653	0.942	42.0	26.94	32.7	41.5	10.8	269.55	139.87	109	108	0.08	3.5	9930.8	1.442	0.974	0.1476	0.0426	0.682	0.734	0.0664	0.844	0.675	1984		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The Thames at Kingston, replacing the d/s Teddington weir measurement structures, has one of the longest flow records associated with any UK flow gauging station. Dating from 1883, it is of major historical and modern day significance. Naturalised flows are available for the period of record. In May 2023, Kingston was recognised by the World Meteorological Organization for having more than 100 years of hydrological observations.	Until 1974 the GDFs were derived from Teddington Weir (a 150m long complex of gates, sluices, weirs and locks that span 70m across the river), where a tailwater rating was used with twice-daily levels (at low tide) to compute flows >85 cumecs. In 1974 a single path US was commissioned 2km upstream to replace the weir as the primary method for flow derivation. This was upgraded to a multi-path configuration (6 paths) US in 1986, and a second US was installed in 1991 to confirm the performance of the primary gauge. Work undertaken in 2018 to further upgrade the ultrasonics to make the station resilient to a 1-in-1000 year flood event.	Kingston: US (6 paths) with back-up to confirm the performance of the primary gauge. During warm weather the gauge can malfunction as the ultrasonic beam is bent by temperature gradients in the river, however this is unlikely to affect high flows but can effect gauge performance at low flows. No issues from temperature gradients have been seen in the past 20years. Increased channel capacity means that bank-full is now very rarely exceeded and the ultrasonic gauge is capable of measuring all within bank flows. Generally, accuracy is good at peak flows, although less so for flows below 5 cumecs. Teddington Weir: Only DMFs are estimated. High hydrometric accuracy is made difficult by leakage, lockages and the general complexity of the site. Significant structural improvements have been made since 1883, but high hydrometric accuracy not achievable for the pre-1951 record. The history of flow measurement at Teddington is detailed in Chapter 6 of Hydrometry: Principles and Practices (1978), Ed. R. W. Herschy, John Wiley and Sons.	Daily naturalised flows available. Daily abstractions between Windsor (39072) and Teddington are added to the DMFs. Leakage and lockages were allowed for in the Teddington flow calculation, but may have resulted in the underestimation of early low flows This was likely to have been a particular problem in the 1930s and 1940s. Gauged flow fell to zero in August 1976. The 1894 peak GDF was re-assessed in 2002 (800 cumecs). The AMAX provided are derived from the definitive natural annual maximum mean daily flow series (not instantaneous AMAX).	Diverse topography, geology and land use, which, together with the pattern of water utilisation, has undergone important historical changes.	Baseflow sustained mainly from the Chalk and the Oolites. Regulation from surface water and/or ground water and reservoir(s) in the catchment affect runoff. Flashy response from tributaries draining the clay dominated catchments. Some effluent derived from outside the catchment increases runoff but overall this is substantially less than major PWS and industrial/agricultural abstractions. Gw abstraction/recharge may also contribute to runoff patterns.
39002	Thames at Days Weir	3444.7	SU56889362	456880.0	193620.0	51°38'18.6618"N 1°10'46.1088"W	51.63852	-1.17947	Thames	Days Weir	45.8	EA-T	1900TH	39	1938-01-01	2016-09-30	MIS				true	true	true	true	false	false	false	false	false	false	true	false	false	PEI	1938-10-01	2015-12-31	28.74	0.05	1976-07-07	1976-07-07	349.0	1947-03-17	1947-03-19	3.3	8.86	16.8	69.4	98.3	0.64	28216	28216	100.0	1938-10-01	2018-02-01	148.014	43.4	67.1	111.7	195.0	330.2	716	690	0.1078	0.4646	0.341	0.0	0.0721	0.0628	0.506	0.3623	0.0045	0.0566	0.2849	0.181	0.4883	0.0458	0.0768		0.0996	0.31	0.65	0.953	37.1	27.04	32.3	40.5	10.1	137.94	80.59	122	131	0.15	43.4	3480.0	1.632	0.879	0.1758	0.0265	0.678	0.896	0.0298	0.813	0.872			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station complex situated in the mid reaches of the main River Thames. Naturalised flows are available for part of the period of record. Station closed 2018, use Sutton Courtenay (39046) as a replacement.	Adjustable thin-plate weir (5.48m wide) plus 15 radial gates, replaced a barrage of radial and buck gates in 1969. An US 8.5 km u/s at Sutton Courtenay (39046) also measures flow in the Thames (US since 1982, records from 1973), immediately below the abstraction point and u/s of the offtake point for Didcot Power Station. Station closed in 2018, use Sutton Courtenay as the replacement.	Non-standard weir calculation for peak flows that is specific to this site. Rating formulae based upon gaugings - tailwater calibration applies for flows > 70 cumecs; above 100 cumecs overspill occurs. Tail levels are recorded relative to standard head level.	Daily naturalised flows for part of the POR (equal to gauged flows up to 1973) - allow for Didcot Power Station losses only. Hydraulic modelling has indicated that the exceptional March 1947 flood may be overestimated.	Mixed geology (Oolitic Limestone headwaters, Oxford Clay downstream). Predominantly rural with development concentrated along the valley. Swindon and Oxford are large urban areas within the catchment.	Runoff reduced by abstraction for public water supply and industrial/agricultural abstraction; increased by effluent returns. River levels affected by lock movements and gates. D/s confluence with the Thame may also cause backwater effects.
39003	Wandle at South Wimbledon	176.1	TQ2655570541	526555.0	170541.0	51°25'11.1510"N 0°10'52.8409"W	51.41976	-0.18134	Wandle	South Wimbledon	10.4	EA-KSL	4180TH	39	1962-01-01		FL		28.0	9.2	true	true	false	true	false	false	false	true	false	false	true	false	false	GE	1962-10-01	2023-09-30	1.892	0.221	1963-01-29	1963-01-29	12.14	2019-06-10	2019-06-10	0.791	1.47	1.74	2.84	3.41	0.87	22280	21001	94.259	1962-10-01		12.667	11.6	35.6	135.8	189.8	268.4	725	724	0.2036	0.0946	0.2507	0.0001	0.4493	0.1507	0.095	0.2977	0.0	0.4561	0.7495	0.0003		0.2502	0.1566	0.2758	0.0172	0.31	0.758	0.985	57.8	20.47	33.2	43.0	10.9	32.45	17.37	114	334	0.31	11.6	177.66	0.442	0.532	0.0774	0.2473	0.247	0.619	0.3643	0.894	0.682	1938..1963	1939-01-01..1964-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station is sum of rectangular critical-depth flume with additional side flume. Artificial flow pattern, influenced by groundwater abstraction/recharge, urban runoff.	Compound station, consisting rectangular critical-depth flume, 5.5m wide. A compound station since 1999, when a side flume was added - a small rectangular flume, approx 1m wide with approx 1m wingwalls. The side channel contributes only 2-5% of the total flow. Superseded (following channel improvements) Wandle Park immediately u/s (sporadic data available 1939-1960). Side channel flume performs poorly due to weed in channel. Flat +3% contribution from side channel added to main flume until structure can be improved.	Drowns (and bypassed) during notable floods. 'Pitot' effect noted in 1986 and inlet pipe altered accordingly. Original theoretical calibration broadly confirmed by subsequent gauging programme and hydraulic modelling.	September 1968 peak flow estimated at c40 cumecs (earlier est. of 56 cumecs includes runoff from the Graveney). In the July 2007 event slight drowning and bypassing began at an estimated flow of about 30 m3/s. AMAX data 1964 to 2004 reviewed, previous data from Wandle Park is excluded. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	The Wandle is spring-fed from Chalk headwaters but the lower catchment is largely London Clay. Urban/suburban (but some river restoration underway) with significant areas of parkland.	The flow regime has a large baseflow component, influenced by groundwater abstraction/recharge. Urban runoff and sewage effluent (some deriving from outside the catchment) also strongly influence flow patterns. Very artificial flow pattern. Automatic weirs affect pattern, otherwise no processing issues. Topographic catchment substantially exceeds effective drainage area, estimated as 54 km2. This estimate of the effective area includes 34 km2 between Beddington Park & Connolly's Mill plus the estimate of 20 km2 to Beddington Park.
39004	Wandle at Beddington Park	122.0	TQ29636548	529630.0	165480.0	51°22'24.9147"N 0°08'20.3760"W	51.37359	-0.13899	Wandle	Beddington Park	33.1	EA-KSL	4150TH	39	1936-01-01	2016-09-30	VA		13.1	120.0	true	true	false	true	false	false	false	false	false	false	false	false	false	G	1936-10-01	2016-09-30	0.187	0.0	1972-11-11	1973-04-20	2.13	1981-10-06	1981-10-06	0.023	0.102	0.161	0.346	0.446	0.79	29220	22563	77.218	1936-10-01	2013-04-26	4.87	31.7	78.9	154.9	197.2	268.4	771	764	0.2456	0.1124	0.2603	0.0001	0.3808	0.1874	0.1046	0.3288	0.0	0.3791	0.8739	0.0004		0.1257	0.0585	0.3612		0.33	0.846	0.993	75.4	16.53	33.3	43.8	11.1	23.82	13.84	145	346	0.28	31.7	117.35	0.204	0.767	0.0318	0.1387	0.693	0.63	0.2309	0.843	0.733	1936..1991	1936-10-01..1991-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area stations gauging a very flashy catchment with complex water utilisation. Station closed in 2016.	Velocity area station. Station was previously electromagnetic (buried coil), a compound Crump weir (1964-1991, bankfull flow 5.73 cumecs) and very insensitive broad-crested weir (1939-1964). Some of the photos show a structure constructed (probably around 1992) to keep head levels high in summer, located 50m downstream of the gauging station.	The compound Crump weir was subject to hydrometric problems, such as siltation, inaccurate zero settings, algal growth, which continued into the 1980s. Siltation in channel causes uncertainties in level measurement that may affect low flows, but flows corrected to allow for this. In spite of the above comments, QMED is similar for Crump Weir and EM station. Theoretical peak flow rating provided from Crump weir, with some check gaugings, though few at high flows. Gauging programme to confirm calibration is ongoing.	Suspect data in recent years due to low confidence in rating, new measurement technique being investigated. Missing data in summer 2016 due to instrument failure. Historical record poor. Peak flow data reviewed by hydraulic modelling after July 2007 event.	Primarily a Chalk catchment (with significant Drift cover) but London Clay predominates near to the gauging station. Suburban/urban land use dominates the lowest third of the catchment. Suburban/urban land use. Effective drainage area is much smaller than topographical catchment in .cd2 file (a value of the order of 20km2 has been suggested). Effective catchment area contributing to flows in the Croydon Branch of the River Wandle upstream of Beddington Park is considered remarkably smaller than 122km2, of the order of 20km2.	Very flashy catchment creates difficulties in gauging high flows. Relatively stable baseflow but urban runoff and complex water utilisation (including substantial groundwater abstraction) influence flow patterns; flashy storm response.
39005	Beverley Brook at Wimbledon Common	43.5	TQ2161471745	521614.0	171745.0	51°25'53.9959"N 0°15'07.0356"W	51.43167	-0.25195	Beverley Brook	Wimbledon Common	11.0	EA-KSL	4080TH	39	1935-01-01		FL		28.3	11.5	true	true	true	true	false	false	false	false	false	false	false	false	false	GE	1935-03-01	2023-09-30	0.542	0.023	1970-10-03	1970-10-03	12.9	1968-09-15	1968-09-15	0.233	0.353	0.422	0.903	1.27	0.66	32356	23874	73.785	1935-03-01		11.1	8.8	15.9	31.7	87.9	170.9	633	630	0.0856	0.009	0.1631		0.7417	0.06	0.0033	0.172		0.7647	0.1525			0.8475	0.2753	0.0002		0.29	0.476	0.994	26.6	33.97	33.3	39.9	10.4	16.12	7.12	41	346	0.32	8.8	39.49	0.732	0.808	0.1379	0.3781	0.872	1.017	0.4992	0.927	1.044	1934..1969	1935-03-01..1961-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal flume with patchy record before 1983.	Trapezoidal flume from November 1939, with nominal capacity 26.7m/3s but no standing-wave formed until invert raised in 1961. Overall channel width: 10m. Original station built 1935 as a flume: details unknown, but thought to have had maximum capacity of around 6.2m3/s.	Capacities of u/s and d/s culverts can influence flood flows. One peak flow rating applied across period of record. Gaugings confirm rating to ~1.7m with some scatter evident. Highest gauging c0.7 QMED. Ongoing gauging programme to verify rating (which overestimates flows).	Very patchy flow record prior to 1983. Bypassed during flood of September 1968; peak estimated at 24-34 cumecs. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A narrow catchment; Chalk headwaters but a largely London Clay catchment of urban/suburban character. Topographic catchment slightly exceeds effective drainage area.	Artificial flow pattern; runoff augmented by sewage effluent which has increased over the record. Runoff influenced by groundwater abstraction/recharge.
39006	Windrush at Newbridge	362.6	SP4017901858	440179.0	201858.0	51°42'50.4737"N 1°25'11.4412"W	51.71402	-1.41984	Windrush	Newbridge	63.4	EA-T	1090TH	39	1950-01-01		US			16.0	true	true	true	true	false	false	false	true	true	false	true	false	false	PGI	1950-10-01	2023-09-25	3.397	0.107	1976-08-26	1976-08-26	31.5	2007-07-23	2007-07-23	0.762	1.61	2.65	6.78	8.34	0.86	26658	26657	99.996	1950-10-01		11.1	64.4	99.3	181.0	252.9	317.2	771	744	0.131	0.4588	0.3444	0.0	0.0487	0.0834	0.4875	0.3901	0.0057	0.0257	0.7389		0.2611		0.0175		0.0592	0.33	0.79	0.951	60.5	17.18	33.7	42.1	10.5	70.6	43.84	178	141	0.21	64.4	361.6	0.647	0.589	0.075	0.0152	0.596	0.667	0.0152	0.789	0.572			gdf;gmf;cmr;cdr;cdr-d;pot-flow;gauging-stage;gauging-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic site located just u/s of the confluence with the Thames. The catchment is mainly pervious limestone; flows are influenced by various abstractions.	Ultrasonic site replaced compound broad-crested weir (total crest width 8.3m) with complementary side-spilling weir (14.9m wide) into bypass channel in March 2010 . A fish pass was established u/s of the weir in April 2010 following the modification of a bypass channel that was formerly controlled by a sluice from 1996. A side cut has existed for an unknown period of time, but most likely since the fish pass was established in 2010.	Now an ultrasonic site established upstream of large capacity weir that suffered subsidence and was subject to drowning. Both weirs drown were bypassed at very high flows. Weed build up, especially during summer, on the crest of the main channel concrete control structure was a historical problem. From 1962 a calibration based upon gaugings was adopted resulting in a good rating. Rating estimated flows to a good level of accuracy but needed confirmation at the highest flows where gauging was difficult. The weir rating was very insensitive at low flows for the main weir structure. The fish pass built in April 2010 bypassed the existing gauge. An index velocity flow meter was installed to quantify the bypass flow but is now decommissioned. Its rating may have been insensitive due to variable weed growth within this narrow channel. Flow through the side cut is ungauged since July 2016. Total flow measured by Ultrasonic gauge upstream of weir since.	Estimated flood peak of 28-31 cumecs in March 1947 (07/03/1947). This was before the commissioning of the station. Early data may be overestimated due to lack of weed cutting. Improvements in the method of water level measurement were made in 1969. Flow data gap between 23/9/03 and 12/1/04 estimated by the EA. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A predominantly pervious (Oolitic L'st) catchment on the dip-slope of the Cotswolds. Mainly rural but the lower valley contains Witney and extensive gravel pit workings.	Flows influenced by groundwater abstraction/recharge. Abstraction occurs for public water supply and industrial/agricultural uses. Runoff diminished by a small net export of water (minor bypassing via side channels also occurs).
39007	Blackwater at Swallowfield	354.8	SU73096478	473090.0	164780.0	51°22'38.5602"N 0°57'04.4804"W	51.37738	-0.95124	Blackwater	Swallowfield	42.3	EA-T	2469TH	39	1952-01-01		CC		26.0	11.5	true	true	true	true	false	true	false	true	true	true	true	false	true	GE	1952-10-01	2023-09-30	3.19	0.464	1953-08-18	1953-08-18	39.2	1968-09-16	1968-09-16	1.07	1.7	2.32	5.99	8.56	0.67	25932	25928	99.985	1952-10-01		22.3	43.0	59.8	80.3	126.4	224.5	712	708	0.2254	0.1809	0.2538	0.0282	0.297	0.2456	0.2698	0.217	0.0452	0.2103	0.1866			0.8134	0.2027	0.0255	0.061	0.32	0.63	0.886	32.1	26.79	32.0	41.4	11.8	35.88	19.59	88	352	0.19	43.0	359.81	0.898	0.895	0.1318	0.0664	0.681	1.108	0.1323	0.872	1.106			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located on the Blackwater just above the confluence with the River Loddon. Combined flow from two Crump weirs which replaced the existing flume in 1970. The original structures dated from October 1952.	Two Crump weirs (main 4.6m wide, capacity 14.5 cumecs; side 2.7m wide, capacity 11 cumecs) based within separate channels due to limitations on bridge openings and channel capacities. These superseded the original flume (capacity 4.5 cumecs) and a 9m wide side-spilling weir (capacity 27 cumecs) during 1970. The main weir is constructed on the site of the flume and the second weir is 300m u/s on the adjacent channel.	Both weirs have separate ratings and crest tappings. Crest heights were selected to improve flood water levels and maintain equable distribution of flow between the channels. Minor bypassing of the side weir occurs in flood conditions. Overflows were more frequent pre-1970. One peak flow rating applied across the period of record has been derived by hydraulic modelling. Total flow is determined from the stage recorded on the flume/main weir site. From 2002, crest (pressure) tapping was installed, and used to correct for drowning of either weir (which may occur above 1m). On the side weir, crest tapping was replaced by tail corrections (1/5/2018). Pre-1970 peak flow data should be used with caution. More detailed modelling is required to improve out-of-bank rating.	Non-modular flow may occur above 1m. Use data pre 1970 with caution.	Permeable Chalk in the headwaters; clay, sands and alluvium in the valley. Substantial and expanding urban development in the eastern Blackwater Valley, but some large rural tracts of arable and pasture land remain. There are also significant areas of heath and woodland. Exact delineation of the hydrological catchment near the North Wey is difficult.	Responsive flow regime. Runoff influenced by groundwater abstraction/recharge, increased by effluent returns. Sewage effluent is a major component of low flows (large STWs at Camberley and Sandhurst), also some net import of sewage effluent. Overall modest increase in runoff.
39008	Thames at Eynsham	1616.2	SP4449908703	444499.0	208703.0	51°46'30.8474"N 1°21'23.2100"W	51.77524	-1.35645	Thames	Eynsham	59.7	EA-T	1200TH	39	1951-01-01	2016-09-30	MIS				true	true	false	true	false	false	false	false	false	false	true	false	false	SPE	1951-10-01	2017-09-30	14.11	0.125	1976-07-02	1976-09-30	101.0	2007-07-24	2007-07-24	1.15	4.27	8.96	33.1	46.8	0.67	24107	24077	99.876	1951-10-01	2016-09-30	75.331	60.0	76.0	118.4	222.7	330.2	755	730	0.108	0.4545	0.3516	0.0	0.0667	0.0673	0.4962	0.3663	0.0056	0.0526	0.551	0.0467	0.3826	0.0197	0.0944		0.0778	0.32	0.686	0.946	39.0	24.09	32.3	40.7	10.0	96.74	58.15	135	133	0.18	60.0	1626.76	1.933	0.827	0.1923	0.0244	0.665	0.975	0.0268	0.82	0.986			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Complex structure utilised to estimate flows based on the main river channel within the Upper Thames Catchment. Naturalised flows are available during the period of record.	Complex barrage of gates and weirs with a total breadth of 30m. Farmoor ultrasonic station (39129) was intended to replace flow measurement at Eynsham.	Bypassed at peak flows through an uncalibrated side channel, though flow estimates are reasonably accurate. Non-standard site-specific flow calculation. Needs manual entry of lock gates movements from Tackle sheets to calculate flows. Tail levels are recorded relative to a different datum to the head levels. The two datums correspond (approx.) to the Standard Head and Standard Tail Water Levels for the weir (the weir crest levels of Eynsham and the d/s weir at Kings).	Naturalised flows available during the period of record. Early flow data derived from once-daily gaugeboard readings. July 2007 peak estimated at 135 cumecs. Some flows estimated from Farmoor (39129) e.g. 16 November to the 31 December 2010.	The geology is mixed with pervious headwaters (Oolitic L'st) and Oxford Clay in lower reaches. Mainly rural with development concentrated along the valley bottom and u/s around Swindon.	Reservoir(s) within catchment affect flows, including Farmoor Reservoir immediately u/s. The off-take, operating from 1955 and is immediately u/s of the station, can take a large proportion of the flow. Flows reduced by public water supply abstraction but increased by effluent returns. Levels affected by gate and lock movements.
39009	Thames at Bray Weir	6915.3	SU909797	490900.0	179700.0	51°30'32.1418"N 0°41'29.7295"W	51.50893	-0.69159	Thames	Bray Weir	21.3	EA-T		39	1959-01-01	1982	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	SGEI	1959-10-01	1982-02-28	58.206	7.051	1959-11-01	1959-11-01	278.0	1979-03-31	1979-03-31	15.26	26.5	41.4	127.0	160.0	0.7	8187	8187	100.0				20.9	61.7	106.9	188.5	330.2	717	697	0.1302	0.4121	0.3418	0.002	0.0972	0.1005	0.4691	0.3412	0.0068	0.0751	0.4049	0.1255	0.275	0.1946	0.1121	0.054	0.0788	0.31	0.665	0.954	41.7	25.88	32.3	40.7	10.5	220.19	124.22	117	115	0.1	20.9	6913.92	1.44	0.99	0.1506	0.0301	0.665	0.857	0.0424	0.826	0.793			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station, closed 1982, is located in the middle reaches of the River Thames.	Complex barrage of gates and sluices with a substantial leakage rate.	Not a primary gauging station.	Flows are indicative only.	Large catchment; scarp and vale topography developed on diverse geology. Predominately rural headwaters contrast with considerable suburban growth in the lower valley.
39010	Colne at Denham	743.0	TQ05188636	505180.0	186360.0	51°33'58.7359"N 0°29'02.0828"W	51.56632	-0.48391	Colne	Denham	34.1	EA-HNL	2870TH	39	1953-01-01		B		17.5	14.4	true	true	false	true	false	false	false	true	true	false	true	false	false	GEI	1952-10-01	2023-09-30	4.133	0.741	1976-08-26	1976-08-26	21.7	2003-01-03	2014-02-09	1.87	2.93	3.69	6.65	8.04	0.87	25932	25932	100.0	1952-10-01		10.3	33.3	73.8	117.8	174.1	266.2	710	704	0.1446	0.3615	0.2559	0.0001	0.2308	0.1268	0.3319	0.3298	0.0027	0.2033	0.8098			0.1902	0.2152	0.3037	0.0886	0.29	0.629	0.903	42.7	31.63	32.1	39.8	10.8	66.82	36.0	121	124	0.16	33.3	725.9	0.563	0.923	0.0769	0.076	0.69	0.919	0.1169	0.87	0.903			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	One of the major gauging stations on the middle section of the River Colne.	Twin semi-circular broad-crested weirs (one section feeds the Frays River). Overall crest length 30m. Used for both water resource and flood warning/forecasting purposes.	Power law rating derived using a simplified broad crested weir formula with a discharge coefficient that remians constant with stage. No corrections made for non modular or drowned flow. Maintenance of weir no longer carried out due to Health and Safety concerns, in channel vegetation can become widespread in growing season. Insensitive to low flows. Some by-passing can occur at extreme stages. Single rating used throughout record.	Frays River part of weir sandbagged for downstream channel works between Jan 2008 and 21st April 2008. Levels artificially high. Bypassing of weir observed in winter floods of 2002/03. In mid-2016 the large bridge upstream of the weir collapsed in the channel and it was rebuilt in Nov 2016. Gaugings since have a predominantly negative bias. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	A largely Chalk catchment with Drift cover. Clays in the valleys supplemented by extensive gravel tracts. The Chilterns scarp is largely rural in the headwaters but considerable suburban development characterises the middle and lower reaches. Hydrological and topographical divides do not coincide.	Complex water utilisation within the catchment. Baseflow from the Chalk remains important but considerable groundwater abstraction leads to net reductions in flows. However, increasing effluent contribution (including Maple Lodge STW) makes up a large proportion of low and medium flows. Abstraction is mainly for industry/agriculture.
39011	Wey at Tilford	396.3	SU87454327	487450.0	143270.0	51°10'55.1384"N 0°45'00.8253"W	51.18198	-0.75023	Wey	Tilford	47.8	EA-T	3040TH	39	1954-01-01		C		37.5	10.4	true	true	false	true	false	false	false	true	false	false	true	false	false	GE	1954-10-01	2023-09-30	3.302	0.575	1956-07-27	1956-07-27	56.2	1968-09-16	1968-09-16	1.32	1.89	2.44	5.61	7.85	0.72	25202	25202	100.0	1954-10-01		25.8	48.9	77.0	126.0	190.7	280.3	869	855	0.2592	0.3116	0.2682	0.0164	0.1351	0.2625	0.3155	0.294	0.0329	0.0924	0.7778	0.0926	0.0001	0.1295	0.0391	0.1831	0.0002	0.35	0.795	0.957	59.0	18.28	35.9	48.0	11.0	50.38	24.78	131	11	0.04	48.9	391.32	0.421	0.875	0.0551	0.0236	0.561	0.749	0.0534	0.801	0.8			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	One of the main gauging stations in the Upper Wey Catchment that measures flow from the South and North Wey tributaries.	Crump weir (crest: 12m wide) replaced an informal broad-crested structure in 1972 that was incapable of precise flow measurement.	A tail recorder was installed in May 2013. The weir was originally constructed with a pressure tapping, but this is almost permanently blocked by silt. The weir is bypassed during peak flows. One peak flow rating applied across period of record incorporating the effects of drowning. Gauged rating replaced Crump calibration in March 1997.	Early low flows likely to be over-estimates e.g. 1958 & 1969); differing hydrometric performance reflected in flow records. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	A predominantly pervious catchment (Chalk and Upper Greensand). Mainly rural with substantial mixed woodland in the headwaters while arable agriculture predominates in the western part of the catchment. Topographical catchment exceeds the gw catchment.	Runoff influenced by groundwater abstraction/recharge. Flows increased by effluent returns. Small net export of water. Substantial baseflow but very responsive to storm events.
39012	Hogsmill at Kingston upon Thames	69.1	TQ1819268783	518192.0	168783.0	51°24'20.7632"N 0°18'07.7163"W	51.40577	-0.30214	Hogsmill	Kingston upon Thames	6.1	EA-KSL	3390TH	39	1956-01-01		B		36.0	15.4	true	true	false	true	false	false	false	true	false	false	true	false	false	E	1956-05-01	2023-09-30	1.112	0.328	1976-09-09	1976-09-09	15.0	1968-09-15	1968-09-15	0.566	0.785	0.929	1.74	2.29	0.74	24624	24264	98.538	1956-05-01		13.743	6.9	22.8	54.5	154.3	193.6	682	671	0.1327	0.0757	0.2742	0.0001	0.5148	0.1045	0.0842	0.297	0.0002	0.5135	0.3661			0.6339	0.12	0.0461	0.0	0.3	0.599	0.991	32.1	27.2	33.0	42.4	10.7	21.2	11.18	72	342	0.37	7.1	72.91	0.611	0.687	0.1051	0.2066	0.783	0.764	0.3074	0.904	0.84			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard flume with broad-crested weir. Responsive regime but flows are influenced by water imports and sewage effluent.	Non-standard flume with bed invert/broad crested weir, 9.1m broad situated in a short reach between u/s and d/s bends. Baffles installed on downstream face of structure for fish passage.	Modular to beyond MAF. One peak flow rating applied across period of record. Rating reasonably accurate, though less so above 0.6m. Non-modular flow above this level is not well described by the current rating. Baffles installed Feb 2017 and a gauging programme was carried out by JBA in the following years. No requirement for rating adjustment was concluded.	Some pre-war data available; station relocated following post-war river works. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A largely urban/suburban catchment in SW London developed mainly on London Clay but headwaters are on the edge of the chalk of the North Downs.	Responsive regime but sewage effluent, which has increased over time, dominates the dry weather flow. Chalk headwaters contribute to baseflow during wet winters. Significant imports of water, hence unrepresentative runoff.
39013	Colne at Berrygrove	352.2	TQ1210898118	512108.0	198118.0	51°40'14.3744"N 0°22'48.8706"W	51.67066	-0.38024	Colne	Berrygrove	54.7	EA-HNL	2830TH	39	1934-01-01		CC		7.4	28.2	true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1934-02-28	2023-09-30	0.838	0.0	1965-05-24	1974-08-03	27.1	2000-10-30	2000-10-30	0.159	0.388	0.575	1.66	2.46	0.69	32722	32462	99.205				54.4	76.4	109.8	162.1	241.7	690	686	0.1106	0.422	0.2276		0.2345	0.0999	0.4015	0.2823	0.0034	0.2105	0.7164			0.2836	0.2484	0.2594	0.1117	0.29	0.565	0.935	33.0	35.44	30.8	38.6	10.6	43.83	21.19	114	116	0.14	54.4	349.25	0.558	0.853	0.0898	0.08	0.705	0.855	0.1175	0.882	0.848			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located in the upper River Colne catchment.	Compound Crump Weir with substantial fall d/s (but backwater effects noted during the 2000 and 2003 floods). Superseded (in 1991) a compound thin-plate weir (9.0m broad - often drowned and bypassed).			A largely pervious (Chalk) catchment with extensive Drift cover. Rural headwaters; considerable urban development in the valley. Extensive gravel workings. catchment difficult to delineate.	Flows over the new weir include those for the Bucknall's Brook. Effluent (Blackbird's STW) is now a major component of low flows - can produce abrupt changes in a relatively stable flow regime. Gw catchment that is difficult to delineate; losses occur (to the River Lee) via swallow holes. Runoff also diminished by long term gw abstraction (restoration programme began in 1991).
39014	Ver at Hansteads	132.0	TL1507701969	515077.0	201969.0	51°42'16.8131"N 0°20'09.8117"W	51.70467	-0.33606	Ver	Hansteads	62.3	EA-HNL	2819TH	39	1956-01-01		CC		9.8	22.2	true	true	true	true	false	false	false	true	true	false	false	false	false	G	1956-10-01	2023-09-30	0.433	0.01	1976-08-18	1976-09-21	2.97	2001-02-14	2001-02-14	0.085	0.254	0.366	0.816	0.992	0.88	24471	24457	99.943	1956-10-01		1.22	61.9	92.9	133.6	180.2	241.7	705	699	0.0949	0.5129	0.1993		0.1874	0.0786	0.5015	0.243	0.0041	0.1718	0.915			0.085	0.1702	0.4854	0.0291	0.3	0.677	0.947	38.5	32.02	31.2	38.2	10.5	31.59	18.52	136	123	0.26	61.9	134.54	0.325	0.847	0.0545	0.0713	0.698	0.718	0.1062	0.891	0.685			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Most downstream gauging structure on the River Ver composed of a Compound Crump weir.	Compound Crump weir with 2 crests, each 2.44m broad. Superseded the original broad-crested weir in 1969 (plus a bypass channel).	Theoretical crump weir formula used to calculate flow, evidence suggests weir rarely drowns or by-passed. Uncertainty in calibration gaugings influenced by the difficulty in finding a suitable gauging location. In March 2016, low cost baffles were installed to aid fish passage.	The early flow data are of a lesser quality (pre-1969). Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Permeable Chalk catchment, with significant Drift cover. Mostly rural headwaters but with significant urban development in the lower valley. Topographical catchment area significantly exceeds the hydrological catchment.	Relatively stable, spring-fed flow regime but artificial influences (sewage effluent returns especially) evident in low flow patterns. Changing gw abstraction pattern over time. Runoff diminished by large gw abstractions (including pws for Luton). These increased sharply from 1950, changing the river's character, until a restoration programme (ALF) was initiated in the early 1990s; abstractions much reduced by the late 1990s.
39015	Whitewater at Lodge Farm	44.6	SU7335652176	473356.0	152176.0	51°15'50.5107"N 0°57'00.0478"W	51.26403	-0.95001	Whitewater	Lodge Farm	71.5	EA-T	2442TH	39	1910-01-01		C IV		3.0	16.7	true	false	false	false	false	false	false	false	false	false	false	false	false	G	1927-01-01	2016-09-30	0.385	0.083	1949-08-23	1949-08-29	1.99	2014-02-09	2014-02-09	0.17	0.267	0.334	0.633	0.775	0.94	32781	32781	100.0				72.6	93.1	125.0	177.8	224.5	801	779	0.1212	0.4095	0.3023	0.0009	0.1499	0.1284	0.6145	0.2119	0.0043	0.0407	0.941			0.059	0.0131	0.1853		0.35	0.906	0.999	47.4	8.43	34.2	44.7	11.2	12.52	7.36	131	9	0.31	73.5	46.99	0.256	0.653	0.0447	0.0115	0.481	0.581	0.0395	0.731	0.653			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging station located within the Upper Loddon catchment.	Opened as a crump weir (width 3.24m), full range with crest tapping, superseding a nearby insensitive rectangular thin-plate weir in 1975 that was operated originally by Mid-Southern Water Company. Index-velocity installed in 2016, but ongoing issues with installation and operation. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	The channel is of low gradient so the weir is vulnerable to drowning (especially in summer when d/s weed growth can be heavy on the tail). Modular limit approximate 0.13m, station is highly susceptible to non-modular flow conditions. Standard Crump weir calculation using tail levels (previously crest tapping). Editing required, though d/s correction is usually good. Sluice movements u/s affect flows and levels. River banks damaged by livestock increases siltation issues at the site. High flows are generally non-modular and rating uncertain under these conditions. Extreme flows are frequently out of bank.	Data prior to 1975 are of much poorer quality (e.g. resulting from clinging nappe and damaged crest). Archived data: 1910-1926 monthly flows, 1927-1963 daily (but 7-day sequences of identical flows); from 1964 onwards GDFs. No mean flow data after 2016 due to ongoing issues with index velocity instrumentation - difficult to get a reliable relationship.	Catchment is developed almost entirely on Chalk (with modest Drift cover) and is rural in character with scattered settlements.	Stable regime that is baseflow dominated. Runoff influenced by groundwater abstractions and STW outflows. Upstream sluices (at old mill pond) and informal damming of the weir can also significantly disturb the flow pattern. Part of the catchment drains into the Basingstoke Canal; a proportion of this runoff returns to the Whitewater catchment. Occasional fluctuations in levels probably caused either by siphons under the canal or the canal overfall.
39016	Kennet at Theale	1033.4	SU6495970828	464959.0	170828.0	51°25'57.8600"N 1°04'01.0053"W	51.43274	-1.06695	Kennet	Theale	43.4	EA-T	2290TH	39	1961-01-01	2019-09-30	C			6.5	true	true	true	true	false	false	false	false	false	true	true	false	true	RGI	1961-10-01	2023-06-19	9.71	0.925	1976-08-21	1976-08-21	48.86	2014-02-08	2014-02-08	3.8	5.83	8.01	17.1	21.2	0.88	22542	22540	99.991	1961-09-01		38.197	44.6	91.3	153.5	205.2	295.7	769	758	0.1495	0.4521	0.315	0.0012	0.0504	0.12	0.544	0.2944	0.0051	0.0337	0.7153	0.0227		0.2621	0.119	0.1805	0.0445	0.31	0.766	0.965	54.9	18.72	32.9	42.3	10.5	90.53	46.99	151	99	0.13	44.6	1037.39	0.651	0.81	0.0783	0.0138	0.61	0.815	0.017	0.774	0.671	2012..2018	2014-10-01..2019-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir, the most downstream gauging station on the Kennet. Since 2014 there have been issues with the channel and a new location is being considered for the lower Kennet gauging station. Closed in 2019 and undergoing decommissioning.	Crump weir (15.9m broad) equipped with crest pressure tapping (not used in flow calculations) and d/s recorder. The station is in an artificially straightened section of the Kennet. Since 2014 the station has experienced problems with channel morphology and a new gauging station downstream of Blakes Lock (Reading) has been installed as a possible replacement.	Stilling well with radar and pressure sensors. Head and tail levels gauged, crest tapping not used. Cableway installed in 1999 but it was subsequently removed. The weir has subsided with a difference in level from left to right of 41mm across the weir crest. Standard Crump weir equation using tail levels (measured since 2005). Flows tend to be non-modular above 10 cumecs. Bypassing occurs above 29 cumecs, through gravel pits on the south side of the flood plain, hence flood flows may be underestimated by the peak flow rating. An increasing number of bottlenecks downstream causes drowning at increasingly lower flow rates.	Flows of >24 cumecs and stages of 0.77m+ are questionable: the rest of the flows gauged are believed to good. Bypassing, flow in Kennet and Avon Canal and over-reduction of drowned flows may cause underestimation of peak flows. GDFs 04-24/12/98 estimated by the NRFA using the Kennet at Newbury (39103). This was due to missing levels, as the gauging hut was refurbished. Since 2014 there have been issues with the channel rendering data unsuitable for flood estimation so peak flows are rejected.	Primarily a rural catchment, especially in the headwaters, with scattered settlements (Newbury is the largest town) and significant urban development concentrated along the Kennet Valley. A mainly pervious catchment (Chalk with significant Drift cover) but the lowest quarter is largely impermeable.	High baseflow component but responsive contribution from the R. Enbourne. Can react quickly to heavy rainfall. Flows influenced by groundwater abstraction/recharge (WBGS), particularly during drought. Abstraction for industrial/agricultural purposes but have little net impact. Minor contribution to the Kennet & Avon Canal.
39017	Ray at Grendon Underwood	18.8	SP6805221115	468052.0	221115.0	51°53'04.0251"N 1°00'45.6698"W	51.88445	-1.01269	Ray	Grendon Underwood	65.7	EA-T	1471TH	39	1962-01-01		FV		6.6		true	false	false	false	false	false	true	false	false	true	false	false	true	N	1962-10-01	2023-09-30	0.098	0.0	1963-06-08	2023-09-17	5.802	2008-06-03	2008-06-03	0.0	0.003	0.013	0.24	0.485	0.17	22280	21183	95.076				65.6	72.1	84.7	115.7	186.9	650	622	0.1705	0.3743	0.4072		0.0456	0.1617	0.2959	0.4763	0.0498	0.0138		0.0644	0.9356					0.32	0.238	0.982	28.0	51.65	32.5	39.1	10.1	8.76	4.55	89	246	0.25	65.6	21.15	0.923	0.848	0.1584	0.006	0.354	1.227	0.0037					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Representative catchment that is important in terms of a national network. It is now a key gauging station for climate change research in the UK. Operated as an experimental basin by IH until 1987. Subsequently managed by Thames Water and then by the EA.	Flat V weir, rebuilt in 1998, within a channel 6.5m wide. The first records for the new weir from 26 March, 1999. Originally a trapezoidal critical-depth flume with the capacity increased in 1964 to make station full range.	Easily drowns owing to restriction caused by d/s culvert. Weir likely to become non-modular before bankful limit. Bypassing observed in exceptional floods but is not rated. Point at which the weir drowned (and therefore the flow calculation is completely uncertain) depends on d/s water levels, may be between 0.3m and 0.55m u/s stage (equivalent to approx 1.5 cumecs). One rating applied across period of record that operates to a standard theoretical rating. The weir is non modular during peak flows as the structure is designed primarily as a low flow structure. The last rating review was 2013. The modular limit is less than Qmed.	Some data loss during 1998 rebuild. Data from 1982-86 less reliable and incomplete. Natural flows to within 10% at Q95.	Relatively flat, impermeable (Oxford Clay) catchment largely given over to agriculture.	Negligible artificial disturbance to the very flashy, responsive flow regime.
39018	Ock at Abingdon	234.1	SU486969	448600.0	196900.0	51°40'07.6113"N 1°17'55.1628"W	51.66878	-1.29866	Ock	Abingdon	51.3	EA-T		39	1962-10-01	1979	CC		12.0		false	true	false	true	false	false	false	false	false	false	true	false	false	EI																			1962-06-01	1979-10-01	10.45	49.7	60.5	80.3	123.8	260.0	646	637	0.0778	0.5211	0.3255		0.0653	0.0451	0.5829	0.3313	0.0036	0.036	0.1011	0.3302	0.2888	0.2798	0.1427		0.0954	0.31	0.635	0.986	23.5	29.08	32.1	39.5	9.7	34.68	16.91	87	67	0.2	49.7	248.22	1.157	0.862	0.2001	0.0192	0.625	0.919	0.0196	0.761	0.854	1961		cmr;cdr;cdr-d;pot-flow;gauging-stage;gauging-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Peak flow station located just downstream of the current flow measuring structure on the River Ock in Abingdon (39081). It operated between 1962 to 1978.	Three adjacent broad crested weirs.	Bypassing occurs above 1.3m (12 cumecs), and can be up to 25% of high flows. Consequently, this station is likely to underestimate flows above a 1 in 2 year flood event. One peak rating applied across period of record. Rating by current meter observation.	Bypassing means station underestimates high flows.	Flat, rural valley in the Vale of The White Horse. There is a mixed geology that a high proportion of a pervious nature. Chalk downland forms southern watershed with the remainder mostly Tertiary clays. Characterised by Corallian Beds, Greensand, Chalk, Kimmeridge Clay, Gault & Alluvium. Contributing area exceeds topographical catchment.	Runoff influenced by groundwater abstraction/recharge. Flows augmented by sewage effluent (derived from outside catchment).
39019	Lambourn at Shaw	234.1	SU4703368219	447033.0	168219.0	51°24'39.7784"N 1°19'30.4908"W	51.41105	-1.32514	Lambourn	Shaw	75.6	EA-T	2269TH	39	1962-01-01	2019-11-05	C		17.0	13.8	true	true	true	true	false	false	true	false	true	true	true	true	true	RG	1962-10-01	2019-11-01	1.743	0.411	1976-08-22	1976-08-22	9.529	2014-02-15	2014-02-15	0.77	1.132	1.46	2.927	3.46	0.97	20851	20851	100.0	1962-10-01	2019-11-05	3.545	72.4	118.3	165.7	207.0	260.3	737	736	0.1026	0.5372	0.3027	0.001	0.024	0.0689	0.6563	0.2606	0.0017	0.0122	0.9733			0.0267	0.0153	0.3051	0.064	0.32	0.839	0.979	59.2	16.08	34.3	43.5	10.3	34.52	19.66	163	134	0.22	72.5	235.43	0.231	0.881	0.034	0.005	0.486	0.647	0.0051	0.669	0.54			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The lowest gauging station in the Lambourn Valley, a crump weir that measures this baseflow dominated catchment. The weir at Shaw was removed in November 2019 to aid fish passage in the Lambourn.	Crump weir (10.67m wide) with auxiliary d/s recorder. A pond discharge ditch, running parallel to the main river, bypasses the weir. An ultrasonic flow gauge was temporarily installed into the discharge ditch d/s of the weir and below the A339 road bridge (mean flow 0.2 cumecs). Another multi-path ultrasonic has also been installed within the road bridge structure for future operational reasons.	There is a possibility of bypassing (overspilling) on the left bank upstream of weir in high floods when storage may be provided by Donnington Lake. Most flows in the modular range. Modular limit reduced to 4.8 cumecs following habitat enhancement d/s (January 2010). Theoretical Crump weir rating confirmed by gaugings.	The impact of a bypass drainage ditch on gauged flows is currently under investigation. Flows at this station are from the weir and end in 2019, pending assessment of continuity with the new ultrasonic gauge that was installed.	A rural catchment in the Chalk of the Berkshire Downs. However there are significant Clay-with-Flints cover with alluvium in the valleys. Local suburban growth near the gauging station but it is primarily a rural catchment dominated by agricultural land use (predominantly arable and grassland).	Runoff influenced by gw abstraction/recharge. PWS abstraction occurs in the headwaters. D/s sluices (occasionally) influence flows. Net artificial disturbance to the regime is limited (apart from periods during which the WBGS is operating to provide low flow support, e.g. Autumn, 1976 & October/November 2012).
39020	Coln at Bibury	106.7	SP1214706228	412147.0	206228.0	51°45'16.6076"N 1°49'31.5388"W	51.75461	-1.82543	Coln	Bibury	100.6	EA-T	0660TH	39	1963-01-01		C			20.8	true	true	true	true	false	true	true	true	true	true	false	true	true	GE	1963-10-01	2023-09-30	1.387	0.127	2022-10-16	2022-10-16	7.25	2014-02-17	2014-02-17	0.376	0.667	1.08	2.77	3.35	0.92	21915	21915	100.0	1963-10-01		3.61	99.3	142.8	194.2	260.3	330.2	818	821	0.1621	0.4076	0.3975		0.0288	0.111	0.4663	0.4103	0.0048	0.0073	0.876		0.124					0.33	0.858	0.968	76.8	12.17	35.3	45.0	10.6	35.78	19.77	197	148	0.18	99.3	107.3	0.259	0.8	0.0291	0.01	0.4	1.021	0.0065	0.499	0.965			gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir located in the mid catchment of the River Coln.	British Standard Crump weir (9.1m broad). Some overspill onto floodplain before design capacity reached.	Modular throughout the range. Estimates flows well. Rated by a standard crump weir calculation confirmed by gaugings.	Overspill might be significant in extreme events (e.g. late-2000 floods and, particularly, July 2007). Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9) and in September 2022 (WINFAP Files v11).	Pervious (Oolitic L'st) catchment on the dip-slope of the Cotswolds. Predominantly rural and dominated largely by agricultural land use (arable and grassland). Some scattered settlements also.	Baseflow dominated flow regime. Runoff influenced by groundwater abstraction/recharge. Limited overall impact of artificial influences on river flows - minor net import from sewage effluent discharges.
39021	Cherwell at Enslow Mill	551.7	SP4820718315	448207.0	218315.0	51°51'40.8380"N 1°18'04.9465"W	51.86134	-1.30137	Cherwell	Enslow Mill	65.0	EA-T	1460TH	39	1965-01-01		CC+CB		74.0	10.9	true	true	true	true	false	false	false	false	false	false	true	false	false	PE	1965-01-06	2023-08-07	3.907	0.078	1976-08-27	1976-08-27	71.8	1998-04-10	1998-04-10	0.675	1.4	2.49	9.0	12.5	0.66	21398	21398	100.0	1965-01-01		19.3	64.2	94.7	131.8	174.0	238.2	701	664	0.0919	0.5033	0.3339		0.0642	0.0299	0.5547	0.3725	0.0016	0.0392		0.1861	0.8139		0.0003		0.0791	0.3	0.59	0.976	46.7	31.41	33.0	41.0	10.9	67.22	39.37	133	137	0.12	64.2	555.45	0.821	0.934	0.0942	0.0235	0.674	0.915	0.0244	0.795	0.938	1964		gdf;gmf;cmr;cdr;cdr-d;pot-flow;gauging-stage;gauging-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is based in a largely rural catchment that contains the North Oxfordshire town of Banbury.	Asymmetrical compound Crump weir (crests: 3.05m and 6.10m) with side-spilling overfall weir for flows > 10 cumecs.	Structure remains modular but flows > 16 cumecs (head of around 0.9m) spill onto floodplain. Bypassing the weir occurs a few hundred metres upstream. Crump weir does not normally drown. Some weed growth u/s. The main weir operates in accordance with Crump weir theory. The main Crump weir uses BS standard equation while the side-spilling weir uses a power law up to a flow of 8 cumecs. A modelled peak flow power law rating is used when the combined weir flow exceeds 8 cumecs. A tail water flow corrections in use from 2012 on main weir.	Limited utility for flood analysis; level measurement imprecise prior to 1967 and bypassing has varied in magnitude through time. Recorded peaks are underestimates; the peak in April 1998 probably exceeded 100 cumecs whilst the July 2007 peak was estimated at 85 cumecs. This is used when the weir is drowned. Flows, post-2005, have been recalculated.	A largely rural catchment but with Banbury at its centre in the upper reaches of the Cherwell. The geology is mixed but is predominantly impermeable Liassic formations (clay).	Flows reduced by public water supply abstraction and increased by effluent returns. Limited overall impact of artificial influences on the runoff (net reduction).
39022	Loddon at Sheepbridge	164.5	SU7201165260	472011.0	165260.0	51°22'54.5909"N 0°57'59.9312"W	51.38183	-0.96665	Loddon	Sheepbridge	42.4	EA-T	2420TH	39	1965-01-01		C		50.0	11.8	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1965-10-01	2023-09-30	2.269	0.523	1976-08-26	1976-08-26	26.7	2007-07-21	2007-07-21	0.981	1.36	1.75	3.86	5.39	0.77	21184	21183	99.995	1965-10-01		16.35	42.6	58.1	86.4	140.7	228.2	757	735	0.1471	0.3877	0.2859		0.1654	0.1471	0.4554	0.2343	0.0041	0.1576	0.4281			0.5719	0.0168	0.0299	0.0489	0.33	0.594	0.947	32.8	26.4	32.4	41.1	11.1	31.6	19.72	94	32	0.28	42.6	176.77	0.696	0.807	0.1015	0.0453	0.612	1.186	0.0872	0.833	1.203			gdf;gmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	This station contains a combination of structures that include two crump weirs and a by-pass flume. These structures superseded a flume and side-spilling weir which were historically subject to bypassing.	Two Crump weirs (2.1m crest, plus 6.9m crest oblique to channel flow) were installed in 1970. A flume was also installed in a new by-pass channel in mid 2002. The flume is not functional and takes less than 1% of the flow under normal flow conditions. This decreases at higher flows. It is not currently used for flow calculations. It is being re-evaluated for possible fish passage viability.	Both Crump weirs remain modular. Protected flows are derived from standard Crump weir equations using both crests. All but extreme flows are contained.	Bypassing within the flume is estimated to be up to 10% at peak flows. Outstation problems reported between 1999 and 2000. There was a sudden short-term drop in levels. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Headwaters are in the Chalk of the North Downs but the catchment is largely impervious. A predominantly rural catchment, containing some important (and growing) urban centres.	Responsive flow regime with significant baseflow and effluent components. Flows increased by net a import of water into the catchment (e.g. via Basingstoke STW). Runoff influenced by groundwater abstraction/recharge. Abstraction is for industrial/agricultural purposes. Weed growth some distance u/s may affect accurate flow estimates.
39023	Wye at Bourne End Hedsor	137.3	SU8959786679	489597.0	186679.0	51°34'18.7363"N 0°42'30.9144"W	51.57187	-0.70859	Wye	Bourne End Hedsor	26.8	EA-T	2590TH	39	1964-01-01		C		12.0	13.8	true	true	true	true	false	false	false	true	false	false	true	false	false	GI	1964-11-28	2023-09-30	0.985	0.141	2013-05-23	2013-05-23	3.35	2001-02-12	2001-02-12	0.488	0.747	0.93	1.484	1.66	0.93	21491	21491	100.0	1964-11-01		2.73	24.8	88.4	153.1	209.0	251.5	781	755	0.1934	0.2358	0.3592	0.0002	0.2046	0.1909	0.2692	0.3531	0.0026	0.1834	0.9996			0.0004	0.0349	0.3974	0.0442	0.3	0.797	0.984	87.9	19.59	34.6	44.1	11.8	27.05	17.06	149	129	0.18	24.8	134.18	0.248	0.739	0.0349	0.0701	0.655	0.75	0.1127	0.817	0.744			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The lowest site on the Wye, located downstream of Wycombe.	British Standard Crump weir, 6.1m broad installed on a slight bend.	Bend in channel causes a build-up of very mobile silt on the upstream right hand apron, which changes the channel cross-sectional area. Site not originally located on bend; fisheries enhancements have changed the channel. Modular throughout the flow range. All but extreme floods contained. Protected flows derived from standard Crump weir equation.	Mill operation evident in early record. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Dip-slope valley in the Chiltern. A mainly pervious (Chalk) catchment with an overburden of Clay-with-Flints (glacial deposits) on the higher ground. Rural headwaters but contains several growing urban/suburban centres in the lower valley (including Wycombe).	The flow regime (especially during low flows) is significantly influenced by artificial influences especially abstractions (particularly gw). The recent closure of the u/s High Wycombe STW has meant that sewage effluent has been redirected to Marlow STW. A groundwater compensation flow has been put in place for the river. However there is no daily variation damping at low flows. Flashy response from growing urban fraction but regime remains baseflow dominated.
39024	Gatwick Stream at Gatwick	31.1	TQ288402	528800.0	140200.0	51°08'47.6896"N 0°09'36.0203"W	51.14658	-0.16001	Gatwick Stream	Gatwick	57.6	EA-KSL		39	1952-01-01	1977-12-31	VA			27.3	true	false	false	false	false	false	false	false	false	false	false	false	false	E	1952-10-01	1977-12-31	0.454	0.009	1976-05-30	1976-05-30	13.0	1968-09-15	1968-09-15	0.105	0.218	0.302	0.878	1.33	0.56	9223	9223	100.0				58.4	70.4	104.5	140.0	172.4	850	835	0.437	0.0975	0.1625	0.0032	0.2921	0.4388	0.0741	0.2022	0.0063	0.274		0.9125	0.0875		0.1365			0.36	0.613	0.944	50.6	33.84	36.7	49.0	11.9	13.81	7.78	105	342	0.28	58.5	30.62	0.698	0.732	0.0836	0.0759	0.757	0.659	0.1588	0.886	0.665			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station. Responsive regime. Discontinued 1976, replaced by 39086.	70m long open concrete culvert of uniform section and bed gradient. Stage pile erected in the deep water section above the culvert length.	Lack of gauging data means rating curve is difficult to evaluate. Unsatisfactory rating and flows frequently went beyond the range of the recorder. Recorder range is limited to a maximum of 265 cusecs (7.5m/s). Higher flows have been extrapolated from the trace. The September 1968 flood, for instance, had an estimated peak stage of 2.32m, corresponding to a flow of 15.3m/s according to an extrapolation of the rating curve.	Discontinued 1976, replaced by 39086.	Upper Tunbridge Wells sand (hard and soft sandstones and silts with local development of Cuckfield Clay) covers most of the catchment area. The Gatwick Stream has cut down through the Upper Tunbridge Wells Sand to expose the Grinstead Clay in some places south of the confluence of the Worth Brook. Grinstead Clay and Lower Tunbridge Wells Sand are also exposed by the headwaters of the Worth Brook. Weald Caly covers the catchment area north of the Tilgate Brook and in the northern projection of this area. Substantially urbanised catchment, with significant woodland.	Moderate permeability.
39025	Enborne at Brimpton	147.6	SU5678364772	456783.0	164772.0	51°22'45.0047"N 1°11'07.8454"W	51.37917	-1.18551	Enborne	Brimpton	59.4	EA-T	2279TH	39	1966-01-01		CC		32.0	15.8	true	true	true	true	false	false	true	true	true	true	false	false	true	GI	1967-10-01	2023-09-30	1.336	0.017	1976-08-25	1976-08-25	26.5	1999-12-24	1999-12-24	0.167	0.387	0.734	2.98	4.67	0.53	20454	20419	99.829	1967-10-01		16.7	60.6	83.5	113.5	164.1	295.7	794	789	0.2406	0.2896	0.3785	0.0018	0.0656	0.2258	0.3915	0.3348	0.0071	0.0395	0.1146	0.0549		0.8305	0.2367	0.0		0.32	0.5	0.978	53.6	32.78	33.2	43.5	11.2	28.02	14.75	120	38	0.28	60.6	142.01	0.728	0.791	0.0753	0.0094	0.455	0.912	0.0199	0.722	0.93			gdf;gmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the responsive Enbourne catchment.	Station comprises asymmetrical compound Crump weir (crest widths 3.0m and 4.56m, separated by 0.3m wide divide pier). A timber baffle fish pass has been installed below the crest of the low flow crump weir (lb).	Generally good high flow calibration (the station remains modular up to 18 cumecs) but the highest flows are underestimated due to bypassing over the left bank. Between 1967 and 1977, the rating was a standard Crump formula with no correction for drowned flows. In 1977, the rating was altered to allow for drowned flows (where levels were greater than 0.96m) and flows were revised. However, this underestimated flow when the river was out of bank. In 1992, a d/s tail recorder was installed and the standard Theoretical Crump weir rating using head and tail levels was used to adjust for non-modularity and to correct for drowned flows. Still no adjustment made for out of bank flow. A total flow flood forecasting rating is available.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Catchment is mainly impervious (Tertiary clays), and responsive. Chalk outcrops and Upper Greensand in the headwaters. Land use is principally agricultural with significant woodland and scattered settlements.	Responsive regime. Runoff is influenced by gw abstraction/recharge but overall this is moderate and there is a net export of water. Abstractions occur for industrial/agricultural use. From 1989 the impact of WBGS may be evident on low flows with a specific example being between October and November, 2012.
39026	Cherwell at Banbury	199.4	SP4583241068	445832.0	241068.0	52°03'57.9465"N 1°19'58.1907"W	52.0661	-1.33283	Cherwell	Banbury	88.7	EA-T	1420TH	39	1966-01-01		CC		50.0	12.0	true	true	false	true	false	false	false	true	false	false	false	false	false	P	1966-12-01	2023-09-30	1.17	0.001	1975-11-24	1976-08-02	49.0	2007-07-21	2007-07-21	0.021	0.167	0.429	2.96	4.82	0.41	20758	20253	97.567	1966-12-01		17.038	90.1	107.2	140.4	170.8	224.3	700	664	0.0791	0.5058	0.3568		0.0503	0.0246	0.5599	0.3852	0.0016	0.0254		0.0793	0.9207		0.0008		0.114	0.3	0.415	0.951	42.4	42.46	33.7	41.9	11.4	32.18	16.79	139	156	0.11	90.1	207.23	0.836	0.866	0.1056	0.0164	0.612	0.71	0.0208	0.789	0.603	1987		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Asymmetrical compound Crump-type weir within a largely rural catchment that is influenced by abstraction, STWs and the Oxford canal.	Asymmetrical non-standard compound Crump-type weir (crest widths: 3.05m, 8.94m). U/s gradient 1:2; d/s gradient 1:3. Design and built dimensions differ so rating under review. The low flow weir is separated from the wider high flow weir by a vertical steel plate that is supported by metal struts fastened to the rb abutment.	Modular limit is approximately 22 cumecs (c. 1.1m). Rated by standard compound Crump weir equation using tail levels, pending non-standardisation. D/s tail level monitoring only introduced in 1992 but tail water levels fall below intake pipe (low to medium flows) so only applied at peak flows. Rating is fairly accurate up to modular limit (approx 1.1m). Peak flow flood forecasting rating available, thought to be more accurate than tail water corrections.	April 1998 peak estimated at around 90 cumecs (but level exceeded structure-full by c. 1.5m). Flows above 30 cumecs should be treated with caution because of the impact of Banbury flood storage area. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A largely impermeable catchment mainly of Liassic formations. Mainly rural but with considerable urban development near the catchment outfall.	A relatively responsive regime but flows influenced by public water supply abstraction and STW. A large u/s abstraction (Grimsbury) can appreciably distort the low flow hydrograph. Sewage effluent also appreciable. Approx. 50 sq.km of the catchment drains directly to the Oxford Canal; some of this runoff returns (via an overfall weir) u/s of Banbury. The flood storage area at Banbury has a capacity of 3 million cubic metres and was completed in 2012. The two outlets are designed to hold the flow at about 2x18 = 36 cumecs until the spillway begins to operate.
39027	Pang at Pangbourne	170.9	SU63457658	463450.0	176580.0	51°29'04.6402"N 1°05'15.4316"W	51.48462	-1.08762	Pang	Pangbourne	39.6	EA-T	2190TH	39	1968-01-01		C		16.0	17.4	true	true	false	true	false	true	false	true	true	true	true	true	true	RGI	1968-11-14	2023-09-30	0.653	0.074	1976-08-24	1976-08-24	8.04	2000-12-13	2000-12-14	0.199	0.379	0.538	1.17	1.49	0.87	20044	20044	100.0	1968-11-01		2.14	39.6	71.7	118.6	174.0	238.0	702	694	0.175	0.4554	0.282	0.005	0.0444	0.1718	0.517	0.2805	0.0072	0.0229	0.7589			0.2411	0.1685	0.1504	0.0205	0.31	0.72	0.996	52.7	22.04	31.9	40.6	10.9	41.14	20.73	121	117	0.2	39.6	175.68	0.439	0.745	0.0629	0.0046			0.0118	0.684	0.679			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station within a rural, mainly chalk, catchment with some influence from abstraction and the main Thames in times of flooding.	Crump weir, 4.0m broad. A tail-water tapping was installed in 2000 (data from 01/07/2001) to replace previous crest-tappings. Low cost fish baffles are present, but they have no impact on the weir.	Stilling well with shaft encoders. The modular limit is approximately 0.4m. Non-modular flows are adjusted via tail-water tapping. Backwater effects, created by the River Thames confluence 137m downstream, cause drowning or even submergence. Correction for drowning is difficult due to the unreliability of the pressure tapping (performance has declined through time). Crest-tapping is no longer used due to siltation. There is greater uncertainty in flows at stages above 0.4m and below 0.1m. No local bypassing but extensive overspilling occurs into Sulham Brook near Tidmarsh during extreme floods (e.g. July 2007 when weir was also drowned). Peak flow rating based on a Standard Crump weir calculation using tail levels. Peak flow rating estimates flow to a good level of accuracy, if not drowned or bypassed.	High flows should be treated with caution where overspill occurs into Sulham Brook (e.g. July 2007), or drowning is caused by the Thames. Increased flows in October / November 2017 evident in both upstream and downstream level, cause unknown. Fish baffles have no impact on weir. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Catchment is principally pervious (Chalk) but a low percentage is impermeable (Reading Beds, London Clay and Alluvium); appreciable Drift/Clay-with-Flint cover also. A largely rural catchment with appreciable woodland and scattered settlements.	Abstraction mainly for industrial/agricultural use. Flow/runoff substantially diminished by groundwater abstractions, although there has been a large reduction in the Compton abstraction from the early 1990s. Occasional impact of WBGS but otherwise relatively few artificial influences on flows.
39028	Dun at Hungerford	101.3	SU32136852	432130.0	168520.0	51°24'53.2559"N 1°32'21.7649"W	51.41479	-1.53938	Dun	Hungerford	99.0	EA-T	2239TH	39	1968-01-01		C		12.0	26.3	true	true	true	true	false	false	true	true	true	true	true	false	true	GN	1968-04-01	2023-09-30	0.682	0.188	1976-08-11	1976-09-20	3.26	2003-01-01	2003-01-01	0.265	0.409	0.537	1.28	1.52	0.95	20271	20271	100.0	1968-04-01		2.16	99.5	130.8	156.2	185.3	276.6	791	786	0.2489	0.4887	0.2188		0.0261	0.2224	0.5612	0.2073	0.0006	0.0078	0.8171	0.0842		0.0987	0.0457	0.3278	0.0009	0.31	0.768	0.988	46.3	21.3	32.7	42.0	10.4	18.55	10.02	157	59	0.17	99.6	100.09	0.274	1.008	0.0498	0.0124	0.529	1.101	0.0041			1967		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located in a mainly rural chalk based catchment dominated by a natural baseflow.	Crump weir, 10.7m broad. Full range and modular.	Peak flow rating based on a standard Crump Weir calculation. Flow slightly underestimated due to differences in design and actual weir dimensions.	Flat line in flows in June 2018 caused my shaft encoder wire issue, no substitute data available. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	A mainly pervious (Chalk) catchment but with appreciable Clay-with-Flints cover in the northern part of the catchment. Rural character (chiefly agricultural but the Dun drains part of Savernake Forest).	Abstractions and discharges are of minor significance. Small net loss, but essentially a natural baseflow-dominated flow regime, natural to within 10% at Q95. Levels affected by the lock on the canal.
39029	Tilling Bourne at Shalford	59.0	SU9999847828	499998.0	147828.0	51°13'15.2425"N 0°34'10.1714"W	51.2209	-0.56949	Tilling Bourne	Shalford	31.7	EA-T	3079TH	39	1968-01-01		C			13.9	true	true	false	true	false	false	false	true	false	false	false	false	false	GIN	1968-05-09	2023-09-30	0.54	0.216	1992-08-05	1992-08-05	4.16	1987-10-10	1987-10-10	0.317	0.423	0.489	0.764	0.945	0.88	20233	20233	100.0	1968-05-01		1.994	32.9	67.5	125.9	208.6	291.4	824	810	0.4917	0.1773	0.2296	0.0011	0.098	0.4507	0.1309	0.3685	0.0075	0.0412	0.9039			0.0961	0.0095	0.0041		0.36	0.885	0.879	93.4	14.87	35.1	46.7	11.7	21.12	11.66	133	311	0.19	33.0	58.77	0.291	0.664	0.0289	0.0081	0.313	0.706	0.022	0.635	0.777			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station influenced by drainage from the North Downs, a d/s artificial pond and high flows from the River Wye.	Crump weir, 5.5m broad immediately d/s of ornamental pond. A tail recorder was added in August 2013.	High flows often overestimated (backing-up from Wey causes drowning, crest-tapping operational but often blocked - requires regular cleaning and pumping out). If the tapping is blocked, an approximate rating for drowned flow is used. This is inaccurate because the weir will drown at different head values depending on the water levels in the River Wey. Rated by a standard Crump weir calculation. Rating for modular flow is reasonably accurate, but there are some discrepancies in both the gaugings and the rating extension for non-modular flow. One peak flow rating across the period of record.		The main valley is broad, but the headwaters drain the North Downs scarp and hilly terrain to the south also. The geology is dominated by the Lower Greensand that is nominally pervious. The catchment is responsive to heavy rainfall due to a large clay component within the geology. A rural catchment predominantly agricultural but with substantial woodland and many scattered settlements.	Sensibly natural runoff pattern (natural to within 10% at Q95), but substantial baseflow component to flow regime but also responsive to heavy rainfall. Runoff influenced by groundwater abstraction/recharge. Some artificial flow regulation and very minor effect of industrial/agricultural abstractions and discharges.
39030	Gade at Croxley Green	184.0	TQ0824395241	508243.0	195241.0	51°38'44.0110"N 0°26'13.1976"W	51.64556	-0.437	Gade	Croxley Green	49.7	EA-HNL	2849TH	39	1970-01-01		CC		14.8	26.8	true	false	false	false	false	false	false	true	false	false	false	false	false	GI	1970-10-01	2023-09-30	0.909	0.049	1976-09-03	1976-09-03	4.53	2001-02-12	2001-02-12	0.319	0.625	0.833	1.51	1.76	0.87	19358	19358	100.0				48.8	85.3	136.8	179.1	247.4	720	718	0.1709	0.3634	0.2498		0.2145	0.1564	0.3067	0.3572	0.0028	0.1752	0.9639			0.0361	0.1897	0.3704	0.0522	0.29	0.73	0.985	54.2	26.4	32.5	40.0	10.8	33.19	18.7	136	133	0.2	48.8	182.35	0.431	0.848	0.0561	0.0659	0.663	0.767	0.1037	0.854	0.769			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located in the lower part of the River Gade catchment.	Compound Crump-type weir (three sections, total breadth 10.1m); sharp bend immediately d/s. All flows are contained.		The negligible inflow from the Grand Union Canal via an overfall weir is no longer monitored.	Primarily a permeable (Chalk) draining the dip-slope of the Chilterns; appreciable Drift cover. Mixed land use: rural headwaters, considerable urban development below.	Baseflow dominated regime but with significant artificial influences evident, particularly at low flows. The net effect of abstractions and discharges is to make the runoff rather unrepresentative; overall a net export of water occurs.
39031	Lambourn at Welford	176.0	SU4110673066	441106.0	173066.0	51°27'18.3198"N 1°24'35.2440"W	51.45509	-1.40979	Lambourn	Welford	95.7	EA-T	2255TH	39	1962-01-01		CC			14.6	true	false	false	false	false	false	false	false	false	false	false	false	false	G	1962-10-01	2023-09-30	1.028	0.188	1976-08-24	1976-08-24	5.68	2007-07-20	2007-07-20	0.381	0.603	0.842	1.873	2.26	0.98	22280	14275	64.071				94.7	136.7	176.5	213.3	260.3	748	745	0.0876	0.5173	0.3392		0.0195	0.0534	0.6601	0.2743	0.0018	0.0103	0.9987			0.0013	0.0049	0.2057	0.0749	0.32	0.88	0.989	66.0	12.88	34.5	43.5	10.3	24.27	13.51	176	127	0.21	94.8	158.86	0.2	0.903	0.0312	0.0039			0.0035					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station was initially set up to assess the results of the Lambourn Groundwater recharge pilot scheme. The station was decommissioned in September 1983. It was then recommissioned in March 2003 as part of LOCAR project.	Mainly low flow station, consisting of 2 Crump weirs and a broad crested weir built under 3 arches of a bridge. Each weir is 2.92m long and the crest of the BC weir is set 0.31m higher than the 2 Crump weirs. The bridge had previously housed 3 sluice gates. The station is located on a bend at the end of a long reach. Removed from peak flows dataset in April 2017 (WINFAP Files v5).	This is a poor location for gauging high flows. Stage recorded on Munro recorder on outside of bend, whereas Crump weirs are on inside and centre of bend. Last gauged in January 2011, however catchment and site are stable. Flow data generated using unverified rating equation.	Flows June to September 2011 estimated due to equipment failure.	A rural catchment (largely arable and grassland) developed on the Chalk of the Berkshire Downs (but significant Clay-with-Flints cover and alluvium in the valleys). A largely natural baseflow-dominated regime.	Artificial regulation upstream. Occasional minor hydrograph blips; no good for analysis. Runoff influenced by groundwater abstraction/recharge. Some gw abstraction and occasional impacted by the WBGS (e.g. Oct/Nov 2012).
39032	Lambourn at East Shefford	154.0	SU390745	439000.0	174500.0	51°28'05.2703"N 1°26'23.7854"W	51.46813	-1.43994	Lambourn	East Shefford	101.9	EA-T		39	1966-01-01	2006-11-09	CC		11.5	7.0	true	false	false	false	false	false	false	false	false	false	false	false	false	G	1966-06-01	2006-11-09	0.724	0.0	1976-08-25	1976-08-25	3.808	2003-01-20	2003-01-20	0.126	0.285	0.538	1.54	1.84	0.98	14772	7707	52.173				102.4	141.2	179.7	214.6	260.3	750	746	0.0835	0.5072	0.3517		0.0197	0.0509	0.6521	0.2852	0.0012	0.0106	1.0					0.1711	0.0755	0.32	0.896	0.988	67.5	11.56	34.5	43.4	10.3	21.2	11.37	178	129	0.2	102.4	145.06	0.185	0.941	0.0294	0.0039			0.0034					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the Upper Lambourn valley and was utilised during various periods as a flow guaging site.	Compound Crump weir with a low centre crest 4.57m long and two side crests 0.3m higher and each 2.29m long. Located in a good, straight reach and the flow pattern over the weir is excellent. The station was decommissioned in 1983, recommissioned in 2003 as part of LOCAR (Lowland Catchment Research) project and was closed again in 2009. Removed from peak flows dataset in April 2017 (WINFAP Files v5).	All but very extreme flows contained (wing walls overtopped at around 7.1 cumecs). Some weed growth u/s. Calibration by standard Crump formula.		A rural catchment (largely arable and grassland) developed on the Chalk of the Berkshire Downs (but significant Clay-with-Flints cover and alluvium in the valleys).	Baseflow dominated regime. Runoff influenced by gw abstraction/recharge.
39033	Winterbourne Stream at Bagnor	49.2	SU4526669473	445266.0	169473.0	51°25'20.8839"N 1°21'01.3723"W	51.42247	-1.35038	Winterbourne Stream	Bagnor	80.5	EA-T	2264TH	39	1962-01-01		C		0.9	36.7	true	true	true	true	false	false	false	false	false	false	false	false	false	RG	1962-11-01	2023-09-30	0.176	0.008	1969-11-01	1969-11-03	1.42	2007-07-20	2007-07-20	0.052	0.097	0.135	0.33	0.416	0.96	22249	22248	99.996	1962-11-01		0.399	79.8	111.0	147.9	187.5	226.4	715	717	0.1205	0.6674	0.1718	0.0007	0.0182	0.08	0.724	0.1891	0.0016	0.0054	0.9175			0.0825	0.0047	0.5697		0.32	0.766	1.0	45.5	22.35	34.0	43.2	10.4	18.21	10.43	148	163	0.3	79.8	45.31	0.2	0.802	0.0325	0.0018			0.0011					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the lower reaches of the Winterbourne Stream, close to the confluence of the River Lambourn.	Crump weir, 3m wide, but was originally 5.5m wide and was reduced to improve sensitivity in 1968. Prone to siltation upstream of weir.	Full range. Resurveyed in 1997 and a new datum was recorded. Non-modular flow conditions can occur when stage is in excess of 0.25m. Protected flows derived from standard Crump weir calculation.	2017/2018 AMAX accounts for West Berks Groundwater Scheme pump test in May 2018. 2018/2019 AMAX not affected by WBGS. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A Chalk catchment (with extensive Clay-with-Flints cover). It is very rural in character.	Stable, spring-fed regime. Runoff reduced by gw abstractions (e.g. WBGS) during the POR.
39034	Evenlode at Cassington Mill	430.0	SP4481609933	444816.0	209933.0	51°47'10.5663"N 1°21'06.1006"W	51.78627	-1.35169	Evenlode	Cassington Mill	60.2	EA-T	1290TH	39	1969-01-01		CC+CB		59.8	11.9	true	true	true	true	false	false	true	true	true	true	true	false	true	EI	1970-10-01	2023-09-30	3.835	0.119	1976-08-25	1976-08-25	51.4	2007-07-21	2007-07-21	0.634	1.36	2.5	8.91	12.1	0.72	19358	19358	100.0	1970-10-01		20.5	60.2	99.6	135.7	195.7	266.5	730	691	0.1416	0.4852	0.3143		0.0493	0.0896	0.5554	0.3281	0.0028	0.0222	0.0799	0.4567	0.4634		0.0347		0.1121	0.32	0.699	0.965	46.5	24.1	33.1	41.7	10.2	62.55	35.13	142	131	0.17	60.2	427.14	0.541	0.996	0.0682	0.0181	0.589	0.998	0.0141	0.736	0.988			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	This gauging station utilises two different weir structures (crump and side spilling weir) to estimate flow for the site.	Complex configuration. Compound Crump weirs (crests: 2.445m and 3.7m wide) plus two side spilling weirs 40m u/s discharging into a canal section. These consists of a 4.614m wide Crump weir and a 7.46m wide broad-crested weir.	Cassington is the combination of two weirs (1 Crump using BS equation & one side spill using a power law) up to 16 cumecs. A modelled peak flow power law rating is used when the combined weir flow exceeds 16 cumecs and bypassing 500m upstream begins. A detailed hydraulic modelling and review of rating was carried out after a July 2007 event, to account for spillage into the floodplain about 500m upstream which bypasses the gauging station. Rating adjusted from hydraulic modelling (EdenVale Young). One peak flow rating applied across the period of record.	Heavily bypassed during the extreme flood of July 2007; peak estimated at 75 cumecs. Series reviewed and extended back to 1971 by Black & Veatch.	Headwaters largely impervious (Lias Series), pervious Oolitic L'st in lower reaches. Responsive regime. A mainly agricultural catchment with scattered settlements. Rural in character.	Near-natural catchment. Some influence from industrial/agricultural abstraction and effluent returns. Small net import of water. Some limited storage in Blenheim Lake.
39035	Churn at Cerney Wick	124.3	SU0757496292	407574.0	196292.0	51°39'55.2851"N 1°53'30.8008"W	51.66536	-1.89189	Churn	Cerney Wick	82.2	EA-T	0290TH	39	1969-01-01		CC		15.9	90.0	true	true	true	true	false	false	false	false	false	false	true	false	false	GEI	1969-10-01	2023-09-30	0.903	0.0	1972-10-23	2011-11-01	4.596	1990-02-11	1990-02-11	0.015	0.229	0.586	2.27	2.78	0.84	19723	19723	100.0	1969-10-01		3.38	84.0	109.7	194.3	257.4	295.1	860	833	0.1776	0.3538	0.3813		0.072	0.1286	0.4184	0.3984	0.0052	0.0419	0.9085		0.0915		0.0033		0.047	0.32	0.825	0.89	73.6	14.6	34.6	45.4	10.4	34.86	20.69	189	148	0.25	84.1	126.74	0.517	0.483	0.0624	0.0197	0.618	0.633	0.024	0.788	0.609			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located downstream of Cirencester on the River Churn.	Asymmetrical compound Crump weir (crests: 1.8m and 3.7m wide).	Full range (and modular) but bypassing can occur at peak flows. This maybe due to peak flow water conveyance in a low lying area that containing a drainage channel. This lies 100m from the river between the main river channel and a disused canal. Very limited head during periods of low flow, hence sensitivity problems. Characterised by a fast rise in water levels during a low flow period. A landowner has occasionally used lasher boards at one crest to impound water for animal watering. Flow is within bank and rating estimate flows fairly accurately.	The river experiences periods of zero flow in some years. Flows generally lower than Cirencester GS due to gravel working. Peak flows probably under-estimated during 2000/01 and July 2007 due to channel bypassing. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Linear catchment on the dip-slope of the Cotwolds. Primarily a pervious (Jurassic oolitic L'st) catchment but with Oxford Clay in lower reaches. Rural in character. Cirencester is the largest town. Extensive open water (Cotswold Water Park) just u/s of Cerney Wick.	Groundwater-fed regime with notably steep seasonal recoveries during wet autumn/early winters. Runoff reduced by industrial/agricultural abstraction but increased by effluent returns. Gw abstractions result in significant loss to the catchment. Evaporation from gravel pits may also be a factor in recent years. Flow sometimes affected by discharges from South Cerney Halford quarry SU 072 967 (consent 13Ml/d from 1986).
39036	Law Brook at Albury	16.0	TQ0454346821	504543.0	146821.0	51°12'39.7284"N 0°30'17.0203"W	51.21104	-0.50473	Law Brook	Albury	56.7	EA-T	3074TH	39	1968-01-01		TP		0.9	20.0	true	true	false	true	false	false	false	true	false	false	false	false	false	G	1968-10-01	2023-09-30	0.107	0.039	1996-06-23	1996-06-24	0.648	2000-11-06	2000-11-06	0.07	0.09	0.102	0.138	0.157	0.93	20088	19809	98.611	1968-10-01		0.459	58.4	88.3	130.0	207.2	255.2	835	819	0.5365	0.1482	0.24	0.0025	0.0729	0.4772	0.1372	0.3587	0.0018	0.0252	1.0							0.36	0.888	0.96	85.7	15.07	35.3	47.5	11.9	9.01	4.92	139	335	0.33	69.1	16.06	0.163	0.594	0.0173	0.001			0.0084	0.605	1.158	1967..2017		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located on Law Brook, a tributary of the Tilling Bourne within the Wey Catchment.	Rectangular thin-plate weir, 2.7m broad.	Flood discharges can exceed weir capacity and bypassing occurs on the right bank; some leakage below weir plate also suspected to have occurred. Heavy accretion (silting) u/s needs dredging regularly as it causes the weir to underestimate flow. Weir damaged in 1996. One rating applied across period of record. Rating is accurate before 1983. No gaugings 1983 to 1993 but post-1993 rating may generally underestimate GDFs and peak flows.	Some peak flows are beyond the upper limit of the rating and so should be treated with caution.(e.g. during 2012). Low flow data from June & July 1996 maybe underestimated due to damaged sustained by the weir. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Small, relatively steep, rural catchment draining from the Winterfold Forest and Hurtwood. Mainly pervious , developed principally on Hythe Beds (Upper Greensand). There is substantial woodland and appreciable urban development in the lower catchment.	Baseflow dominated regime but responsive on occasions. Apparent very late response (autumn) to winter recharge. Low flow pattern affected by inputs from artesian boreholes (supporting watercress beds). Runoff is less diminished since the closure of the Thames Water gw abstraction near to the station.
39037	Kennet at Marlborough	142.0	SU1870568631	418705.0	168631.0	51°24'59.0059"N 1°43'56.6888"W	51.41639	-1.73241	Kennet	Marlborough	126.5	EA-T	2210TH	39	1972-01-01		C B		36.3	54.2	true	true	false	true	false	false	false	false	false	false	false	false	false	G	1972-02-01	2023-09-30	0.905	0.002	1976-08-15	1976-11-25	10.1	2003-01-02	2003-01-02	0.083	0.303	0.564	2.18	2.81	0.94	18870	18870	100.0	1972-02-01		3.08	125.0	157.7	182.3	222.3	293.7	817	772	0.0678	0.5585	0.3189		0.0192	0.0395	0.6636	0.2845	0.0025	0.0099	0.9997			0.0003	0.074	0.1157		0.34	0.959	1.0	51.3	5.06	31.7	41.1	10.2	28.52	15.19	187	96	0.07	125.0	136.43	0.459	1.092	0.0763	0.0108	0.469	0.781	0.0064	0.672	0.54	1971		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station based in the chalk dominated upper catchment of the River Kennet.	Crump weir, 6.1m broad, with crest-tapping plus a broad-crested side weir for high flows. Fish passage baffles fitted to back face of the main crump weir in 2014.	Full range and only subject to occasional drowning. One peak flow rating applied across period of record. Rating curve currently underestimates flows beyond 0.442m when the rating should be based on a crump and broad crested weir.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	A Chalk catchment with some Clay-with-Flints cover in the lower catchment. It is predominantly rural with Marlborough, a market town, close to outfall. The runoff is low and overall is a baseflow dominated catchment. The hydrological catchment is smaller than the topographical catchment.	Baseflow dominated regime where runoff is low. The hydrological catchment is smaller than the topographical catchment; some diminution (reduction) in flow also results from gw abstraction.
39038	Thame at Shabbington	443.0	SP670055	467000.0	205500.0	51°44'39.1366"N 1°01'51.5384"W	51.7442	-1.03098	Thame	Shabbington	58.1	EA-T	1970TH	39	1968-01-01	1994-04-30	B		17.0	17.4	true	false	false	false	false	false	false	false	false	false	true	false	false	GE	1968-10-01	1994-04-28	2.786	0.119	1976-08-26	1976-08-26	27.6	1990-02-04	1990-02-04	0.454	0.885	1.48	6.35	9.75	0.53	9341	8941	95.718				59.1	72.7	90.3	143.3	268.3	663	647	0.081	0.3758	0.4504	0.0	0.0894	0.0488	0.4005	0.4724	0.0023	0.0728	0.1788	0.1999	0.2929	0.3284	0.0241	0.0028	0.0497	0.31	0.499	0.982	35.0	37.23	31.6	38.9	10.1	51.69	25.69	101	315	0.15	59.1	438.77	1.106	0.937	0.1598	0.0238	0.636	1.064	0.0411	0.83	1.096			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad crested weir gauging a tributary of the Thames, closed in 1994 and replaced by Wheatley (39105).	Broad-crested weir (width 10.5m), decommissioned in 1994. It was replaced by Wheatley (39105) located 10.5km downstream where the floodplain is contrained by an old railway embankment. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Gauged by current meter, imprecise at peak flows when flows often exceed bank full. Weir drowns easily and is sometimes bypassed (on right bank above 1.0m). Rating is theoretical with modification for non-modular flow using tail water measurements, but remains uncertain above 1.0m.		A rural catchment draining from the Chilterns scarp (Chalk) but developed mainly on clays and Greensand.	Runoff influenced by groundwater abstraction/recharge and increased by effluent returns. Responsive regime with a small baseflow flow contribution from the Chalk scarp of the Chilterns.
39039	Wye at High Wycombe	67.7	SU85299368	485290.0	193680.0	51°38'07.6990"N 0°46'08.4625"W	51.63547	-0.76902	Wye	High Wycombe	76.9	EA-T	2550TH	39	1968-01-01		TP		1.1		true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1997-07-01	2023-09-30	0.248	0.0	1997-07-01	2006-11-13	1.213	2020-03-09	2020-03-09	0.002	0.112	0.192	0.535	0.686	0.94	9588	9565	99.76				76.0	113.4	164.3	216.4	251.5	801	760	0.1851	0.3073	0.3959		0.1076	0.2167	0.3417	0.3478	0.0032	0.0897	0.9991			0.0009	0.0227	0.3941	0.0193	0.3	0.824	0.968	91.5	18.07	33.9	43.7	11.7	13.97	7.73	164	104	0.21	76.2	67.73	0.163	0.706	0.0255	0.0347	0.618	0.688	0.0525	0.769	0.674			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located in the upper River Wye catchment.	Flat V (1:10 cross-slope) with crest tapping installed, in 1996, as part of ALF programme. Structure width exceeds natural channel width. Previously flows were monitored, from 1937, at the same site using two thin-plate weirs (1.8 and 1.4m broad).	Non-modular for significant periods due to heavy weed-growth in d/s section.	Discontinued in 1975 due to poor hydrometric performance - data unreliable (not held on NRFA).	A Chalk catchment with significant Clay-with-Flints cover. Mostly rural but appreciable urban and commercial development above the g/s.	Stable, spring-fed regime but impact of artificial influences evident.
39040	Thames at West Mill Cricklade	185.0	SU0940194229	409401.0	194229.0	51°38'48.4113"N 1°51'55.9016"W	51.64678	-1.86553	Thames	West Mill Cricklade	78.5	EA-T	0190TH	39	1972-01-01		CC		20.3	28.6	true	false	false	false	false	false	false	false	false	false	false	false	false	PGEI	1972-07-01	2023-09-30	1.387	0.011	1976-08-28	1995-08-30	10.4	1979-12-28	1979-12-28	0.072	0.257	0.759	3.607	4.68	0.72	18719	18698	99.888				79.4	89.5	107.6	161.0	217.2	812	773	0.1152	0.4204	0.3889		0.0361	0.0831	0.4844	0.3628	0.0101	0.0218	0.6241		0.3759		0.1193		0.0793	0.33	0.644	0.886	20.3	26.72	33.0	41.6	10.1	31.21	16.63	116	128	0.29	79.4	187.46	5.587	0.694	0.308	0.0088	0.577	0.851	0.0079	0.687	0.851			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir based in the main channel within the Upper Thames Catchment.	Compound Crump weir (crests: 2.5m and 4.5m wide) with crest-tapping. The site is adjacent to a SSSI site and an SAC. The weir is believed to assist in maintaining levels in the meadow.	Gaugings suggest the tail reduces the flow too much. The d/s levels is used for drowning adjustment and this may reduce flows too much. Standard Crump weir calculation (2 crests) using tail levels. Needs more calibration at peak flows. The channel capacity d/s has decreased over time. The weir becomes non-modular at a lower head level than previously. This should not affect calculated flows.	Drowning now more frequent during high flows due to reduced channel capacity d/s. Bypassing during extreme floods e.g. during winter of 2000/2001.	The catchment is characterised by a mixed geology. he Thames rises on the Cotswolds (Oolitic L'st) with the lower catchment being chiefly Oxford Clay. Overall the catchment is predominantly Great Oolite and Oxford Clay with some Cornbrash. The predominant land use is agricultural. Extensive gravel workings in the main valley.	Groundwater-fed regime but notable seasonal recoveries during wet autumns. Artificial influences evident at low flows. Runoff is somewhat diminished by gw abstractions for PWS, industry (gravel dewatering) and agriculture but more than compensated for by effluent imports from Cirencester. Small daily fluctuations in levels are caused by STW effluent returns.
39042	Leach at Priory Mill Lechlade	76.9	SU22709932	422700.0	199320.0	51°41'31.8388"N 1°40'22.7853"W	51.69218	-1.673	Leach	Priory Mill Lechlade	71.7	EA-T	0890TH	39	1972-01-01		C		8.6	32.0	true	true	true	true	false	false	false	true	false	true	false	false	true	PE	1972-10-01	2023-09-30	0.768	0.013	1990-08-13	1990-08-13	6.25	2003-01-03	2003-01-03	0.077	0.219	0.492	1.92	2.47	0.79	18627	18609	99.903	1972-10-01		3.1	71.4	92.0	142.7	185.3	252.9	776	736	0.0972	0.6419	0.227		0.0207	0.0486	0.6535	0.2827	0.0007	0.007	0.9474		0.0526		0.0568			0.33	0.865	0.971	36.5	12.21	31.8	40.3	10.0	34.51	18.95	143	158	0.33	71.4	77.61	0.558	0.61	0.0828	0.0075	0.501	0.981	0.0034					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located on the lower River Leach, less than a kilometre above the confluence with the River Thames.	Crump weir, 4.5m broad with crest-tapping.	D/s weed growth and backing-up from the Thames can result in drowning (flows adjusted using tail levels). Bypasses at high flows. Station does not measure all the flow from the catchment. An overflow channel 2-3 km u/s above gauging station flows into a distributary, the Leach back stream (gaugings have measured 0.05 - 1.24 cumecs). Standard Crump weir equation using tail levels to adjust for non-modular flows. Estimates flow accurately, including non-modular flow above 0.4m.	Occasional rapid changes in level within the POR (e.g. April 94 during work on the walls). Previous maxima exceeded during November/December 2000 but flows not computed. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	A linear catchment on the dip-slope of the Cotswolds. The geology is mainly on the Oolitic L'st (also various amounts of Forest Marble, Alluvium, Cronsbrash, Clay and Gravels). Mostly agricultural with scattered settlements. Extensive gravel pits occur just above the catchment outfall.	Baseflow dominated regime but responsive to significant storm events. Runoff reduced by PWS abstraction and increased by effluent returns (sewage outfall u/s of weir). Effluent derived from outside the catchment results in small net augmentation of runoff. Otherwise artificial influences are minimal.
39043	Kennet at Knighton	295.0	SU29507102	429500.0	171020.0	51°26'14.6906"N 1°34'37.1583"W	51.43741	-1.57699	Kennet	Knighton	104.9	EA-T	2230TH	39	1962-01-01	2016-09-30	CC			21.1	true	false	false	false	false	false	false	false	false	false	false	false	false	G	1962-10-24	2023-09-30	2.666	0.096	1976-07-21	1976-07-21	24.5	2003-01-02	2003-01-02	0.62	1.28	1.98	5.43	6.64	0.95	22257	20827	93.575				106.0	149.0	181.1	226.7	293.7	800	773	0.0919	0.5161	0.3218		0.0271	0.0431	0.6399	0.2971	0.0022	0.0174	0.9998			0.0002	0.0638	0.1534	0.0067	0.32	0.951	0.988	65.6	5.87	31.8	41.0	10.2	42.86	21.34	184	113	0.13	106.0	299.17	0.396	1.128	0.0614	0.0111	0.528	0.872	0.0082	0.71	0.709			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located in the upper section of the River Kennet between Marlborough and Hungerford.	Two Crump weirs: 13.7m crest on the main channel plus a 1.7m crest on the Littlecote Stream.	Good general association in flow patterns with u/s and d/s gauging stations but the river has a very flat gradient. Some bypassing occurs during flood events. The main river is subject to frequent drowning (weed growth/siltation) with very high submergence ratios.	Some pre-1980 flows uncorrected, data under review.	A Chalk catchment (limited Clay-with-Flints cover). Mainly rural (includes part of Savernake Forest) but some urban growth in the valley.	Baseflow dominates the flow regime. Flows slightly diminished by gw abstraction.
39044	Hart at Bramshill House	84.0	SU7553059181	475530.0	159181.0	51°19'36.2044"N 0°55'02.5698"W	51.32672	-0.91738	Hart	Bramshill House	49.8	EA-T	2458TH	39	1972-01-01		C		12.1	18.1	true	false	false	false	false	false	false	true	false	false	false	false	false	E	1972-10-01	2023-09-30	0.809	0.098	1976-08-24	1976-08-26	10.1	2020-02-16	2020-02-16	0.232	0.405	0.588	1.53	2.17	0.65	18627	18584	99.769				50.5	63.9	81.0	121.9	190.6	702	707	0.2681	0.1834	0.2655	0.0216	0.2531	0.2928	0.3235	0.1853	0.0383	0.1529	0.1156			0.8844	0.1413	0.0006	0.0646	0.35	0.589	0.947	32.0	30.0	31.7	41.2	11.8	20.61	11.58	87	353	0.24	50.8	84.08	0.787	0.884	0.1215	0.0366	0.619	1.02	0.084	0.871	1.033			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located on the River Hart above the confluence with the River Whitewater.	Crump weir, 4.0m broad. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Standard Crump weir calculation with non-modular corrections. Weir is non-modular throughout most of the range, requiring considerable adjustments to flows. Crest tapping used until 2014 for non-modular corrections, replaced by tail water level recording. Banks overtopped in extreme floods.	Weir is drowned during majority of peak flow events, and flow is often out of bank. Also poor low flow record due to weed-induced drowning.	Chalk headwaters but a mainly impermeable (Eocene formations with a limited overburden of glacial deposits) catchment. Mixed land use. Rural tracts with considerable woodland but also includes growing urban development in the headwaters including Camberley and Farnborough.	Flows augmented by effluent derived from outside the catchment.
39046	Thames at Sutton Courtenay	3414.0	SU5170294623	451702.0	194623.0	51°38'52.9202"N 1°15'14.9123"W	51.64803	-1.25414	Thames	Sutton Courtenay	44.9	EA-T	1800TH	39	1974-01-01		US				true	false	false	false	false	false	false	true	false	false	false	false	false	PEI	1973-10-01	2023-09-30	27.978	0.02	1976-05-29	1976-05-29	218.0	2003-01-05	2003-01-05	2.61	8.1	16.3	70.1	97.3	0.66	18262	16092	88.117				45.8	67.9	112.7	195.7	330.2	718	691	0.1087	0.4654	0.3408	0.0	0.071	0.063	0.5053	0.3645	0.0045	0.0552	0.2866	0.1808	0.4959	0.0366	0.0726		0.0991	0.31	0.648	0.957	37.4	27.11	32.4	40.5	10.1	127.97	71.74	123	131	0.16	45.8	3425.74	1.62	0.869	0.1746	0.0263	0.679	0.887	0.0292	0.814	0.872			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The ultrasonic gauging station is located on the River Thames between the off-take and discharge for Didcot Power Station.	NIVUS multi-path ultrasonic replaced earlier Sarasota multi-path ultrasonic in 2021. This replaced an earlier multi-path ultrasonic no later than 2006, which replaced the original (first in the UK) single-path device in 1982.	NIVUS ultrasonic gauge has 4 transducers at 45 degrees to flow. No skewness in flow. Spikes in data can be caused when weed growth interferes with the ultrasonic beams; these are removed manually in WISKI. US beam status is logged and sent via telemetry, so hydrometrists are aware of problems before visiting. Very rarely, boats moor in the US path and affect readings. Radar sensor for water level measurement installed in 2021 - previously stilling well with shaft encoder. The radar always chooses the strongest echo and suppresses weaker echoes. It can struggle with duck weed and lilies dispersing the beam. All but the highest flows are contained with significant bypassing in exceptional floods. Remote control ADCP boats are used to gauge at this site. Exceptionally high flows are difficult to gauge as the right-hand floodplain is separated from the river by a fence. Low flows can be difficult to gauge as lock movements nearby u/s and d/s can create slow waves, which may cause negative flows. Gaugings are taken in the early morning whenever possible to avoid lock effects, and 8 transects are taken instead of 4.	Early data of lower precision with isolated extreme minima and some negative flows in 1976 (not archived). Naturalised daily flows are available. No data between November 2019 and March 2021 due to gauge failure. Data are set as missing when there are so many spikes recorded that the despiked data are unrepresentative. GDF can exceed peak flow if a spike occurs at the time of peak flow.	Mixed geology: Oolitic L'st headwaters, Oxford Clay below. Mainly rural with development concentrated in the valleys.	Rectangular channel in straight, navigable reach where levels and the velocity profile can be influenced by u/s and d/s locks.
39049	Silk Stream at Colindeep Lane	29.0	TQ2170589500	521705.0	189500.0	51°35'28.3719"N 0°14'40.2823"W	51.59121	-0.24452	Silk Stream	Colindeep Lane	39.9	EA-HNL	3829TH	39	1973-01-01		FV			27.5	true	true	false	true	false	false	false	true	true	false	false	false	false	N	1973-12-01	2023-09-30	0.255	0.0	1975-09-01	1978-11-11	8.55	2000-10-29	2000-10-29	0.039	0.077	0.114	0.61	0.947	0.34	18201	18110	99.5	1928-10-01		12.84	38.8	50.9	73.4	122.3	153.2	699	685	0.1227	0.0593	0.1864	0.0008	0.6284	0.1044	0.0629	0.1968	0.0002	0.6339				1.0	0.0862			0.29	0.182	0.972	40.1	50.29	32.5	42.2	10.7	10.1	5.33	79	171	0.37	38.8	31.07	0.594	0.773	0.0848	0.306	0.863	0.8	0.402	0.929	0.806			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located on the Silk Stream, a small tributary of the River Brent. The station is used in a number of national studies of urban and suburban runoff response.	Flat V weir (1:10 cross slope, width: 8.5m).	A d/s bridge acts as a control in high flows (1.3m gauge height) and may cause the weir to drown. Tail recorder data shows that the modular limit is variable but generally occurs at stages between 0.4 and 0.5m. Tail measurements are not used to correct non-modular flows. Debris in the channel can influence the hydrometric performance and siltation between the weir and d/s bridge is also a problem. Significant u/s deposition can occur and this can also alter the performance of the weir. The surrounding open space has been used as a dumping ground. One theoretical rating applied across period of record. The structure is operated as a rated section with 2 limbs. The lower limb is based on the theoretical rating for a Flat V weir, gaugings suggest there is a tendency to underestimate flows. The upper limb, which covers the non-modular range, was derived from very limited gaugings and confidence remains low.	Some bypassing occurs during floods (July 2007 flood exceeded the calibration limit and peak flow may be underestimated). Patchy flow record prior to 1981. Daily flow data from 1975-1978 estimated using modelling and should be treated with caution. Poorer quality pre-1973 data available for two earlier stations on the river (built in 1928 and 1944); significant river improvements undertaken in the 1950s.	Catchment is largely London Clay with a little Drift cover. Rural/suburban headwaters and is heavily urbanised downstream. Responsive regime.	Responsive regime. Net impact of abstractions and discharges uncertain; artificial influences evident at low flows.
39051	Sor Brook at Adderbury	106.4	SP475346	447500.0	234600.0	52°00'28.1119"N 1°18'33.8279"W	52.00781	-1.3094	Sor Brook	Adderbury	28.2	EA-T		39	1967-01-01	1988-04	C		10.0	18.4	true	false	false	false	false	false	false	false	false	false	true	false	false	PEI	1967-01-19	1988-04-18	0.85	0.005	1976-08-26	1976-08-26	5.35	1979-12-28	1979-12-28	0.184	0.382	0.651	1.71	2.25	0.74	7761	7669	98.815				85.8	109.9	145.5	190.2	225.0	703	659	0.106	0.4728	0.3491		0.0636	0.0238	0.5444	0.3963	0.0014	0.033		0.0784	0.9216				0.0243	0.3	0.724	0.995	58.1	23.36	33.0	40.8	11.1	24.94	14.62	147	112	0.22	85.8	108.28	0.457	0.721	0.0591	0.0267	0.689	0.69	0.0241	0.73	0.701			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the lower reaches of Sor Brook, a tributary of the River Cherwell.	Crump weir, commissioned in 1982, superseded a compound broad-crested weir (3.6m broad) plus sluice gates.	Monitoring of the sluice position complicated the computation of the early flow data. High flow calibration for the Crump weir not fully defined.	Record ends in 1988.	An impervious (Middle Lias), mainly rural catchment.	Some bypassing during floods. Minor impact of artificial disturbances on the flow regime.
39052	The Cut at Binfield	50.2	SU85357125	485350.0	171250.0	51°26'01.7950"N 0°46'24.8906"W	51.43383	-0.77358	The Cut	Binfield	45.6	EA-T	2620TH	39	1957-01-01		MIS		26.0	16.7	true	true	false	true	false	false	false	false	false	false	false	false	false	EI	1957-10-01	2023-09-30	0.404	0.006	1967-09-06	1967-09-08	9.5	2007-07-20	2007-07-20	0.071	0.139	0.244	0.862	1.3	0.46	24106	23986	99.502	1957-10-01		7.543	44.4	60.0	72.2	91.9	128.2	688	676	0.2328	0.0596	0.2909	0.009	0.403	0.2403	0.1124	0.3095	0.0069	0.3258				1.0	0.0552			0.29	0.355	0.939	24.7	41.54	32.5	40.8	12.6	13.74	7.52	75	340	0.18	44.4	50.0	0.772	1.063	0.1265	0.1173	0.701	0.858	0.2374	0.888	0.869			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station was established to assess the effect on flow due to the growth of Bracknell, although the structure (previously existing) was not ideal for this.	Broad-crested weir (13.7m wide) plus adjustable low flow notch (crest 1.22m wide), that was added in 1968, at outfall from an ornamental lake.	Possibly some flow under main weir and leakage at the notch (adjustable weir). Probably unlikely to drown as there is a large drop over weir. One rating applied across the period of record; tends to underestimate flows in the AMAX range. This was derived using broad-crested weir theory, with flows treated as sum of two broad-crested weirs.	Early flow data (prior to installation of the low flow notch) was less precise. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	An impermeable catchment (London Clay). Rural headwaters, including considerable woodland, but major new town development (Bracknell) built upstream since late 1940s. Downstream the land use within the catchment is almost a third urban overall (with a substantial increase over the POR).	Hydrograph shows mixed rural/urban response - including the effect of balancing ponds. Runoff increased by effluent returns and reduced by industrial/agricultural abstraction. Significant and increasing effluent component during periods of low flow (primarily from Ascot STW - this represents a net import of water).
39053	Mole at Horley	89.9	TQ27094328	527090.0	143280.0	51°10'28.7174"N 0°11'00.0677"W	51.17464	-0.18335	Mole	Horley	51.7	EA-KSL	3230TH	39	1961-01-01		CB		26.0	13.0	true	true	false	true	false	false	false	false	false	false	false	false	false	PE	1961-11-17	2023-09-30	1.648	0.114	1976-08-22	1976-08-22	48.4	2000-11-06	2000-11-06	0.282	0.643	0.897	3.38	5.69	0.45	22598	21879	96.818	1961-11-01		27.638	52.1	59.8	81.1	127.8	172.4	826	812	0.2623	0.1379	0.2605	0.0015	0.3255	0.2565	0.111	0.3212	0.0021	0.3056		0.3801	0.6199		0.1195		0.0221	0.36	0.464	0.947	34.2	40.24	35.8	47.6	11.7	18.16	10.46	88	10	0.3	52.1	91.59	1.495	0.701	0.1987	0.0914	0.735	0.919	0.1904	0.887	0.837			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir. Runoff reduced by public water supply abstraction and increased by increasing sewage effluent contribution.	Central notch: 2.44m broad (crest changed in July 2003 to Crump profile with significantly lower crest level, to reduce u/s impoundment) plus flanking crests: 10.96m broad, no divide walls.	Probably drowns, rated section at high flows; well rated to 30 cumecs but considerable uncertainty in extreme flow range. Significant scatter in gaugings surrounding the current rating. Two ratings applied across period of record, the most recent is valid from July 2003 when crest profile altered. Significant scatter in gaugings surrounding the current rating. Two ratings applied across period of record, the most recent is valid from July 2003 when crest profile altered.		Catchment is mainly impermeable (chiefly Weald Clay) with mixed land use and growing urban component - includes Crawley, Gatwick Airport; considerable woodland also.	Runoff reduced by public water supply abstraction. Sewage effluent contribution is increasing (much of it from outside the catchment); moderate overall increase in runoff.
39054	Mole at Gatwick Airport	31.8	TQ2602939806	526029.0	139806.0	51°08'37.1601"N 0°11'59.0550"W	51.14366	-0.19974	Mole	Gatwick Airport	56.7	EA-KSL	3210TH	39	1961-01-01		US		12.3	20.0	true	true	false	true	false	false	false	false	false	true	false	false	true	PE	1961-10-30	2023-09-30	0.357	0.0	1995-07-21	2021-07-26	17.4	1968-09-15	1968-09-15	0.015	0.04	0.1	0.906	1.61	0.23	22616	20015	88.499	1986-08-14		10.1	59.0	66.3	84.4	114.4	145.3	829	816	0.2132	0.168	0.3252	0.0007	0.2819	0.1979	0.1595	0.4105	0.0	0.228		0.1171	0.8829		0.0758		0.0187	0.36	0.437	0.943	33.5	40.94	35.8	47.4	11.7	11.21	6.6	88	15	0.32	59.1	32.33	1.206	0.673	0.1719	0.0878	0.757	0.873	0.1399	0.885	0.878	1985..2019	2019-09-24..2020-01-24	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station gauging an impervious catchment with some urban land use.	Since 2005, an ultrasonic station 200m downstream of original station - rectangular flume (2.74m broad) in culvert below airport runway plus Crump weir in overflow channel (built in 1984, and appears to influence the homogeneity of the flow record). Station added to peak flows dataset in September 2022 (WINFAP Files v11).	Six-path ultrasonic gauge, replacing four-path gauge in September 2019.	Ran dry for the first time in summer of 1995. Four-path gauge failed in 2016, no data available until re-opening in September 2019. Multiple years rejected in the Peak Flow Dataset due to missing data.	Impervious (Weald Clay) catchment; mostly rural but heavy urban development in the eastern third.	Very limited disturbance to the responsive, natural flow regime (Gatwick Airport is not in the catchment); small net export of water.
39055	Yeading Brook West at North Hillingdon	17.6	TQ083846	508300.0	184600.0	51°32'59.6640"N 0°26'22.0465"W	51.54991	-0.43946	Yeading Brook West	North Hillingdon	32.0	EA-HNL	3620TH	39	1974-01-01	1995	FV			194.9	true	true	true	true	false	false	false	false	false	false	false	false	false		1979-01-03	1994-06-30	0.13	0.001	1983-08-29	1983-08-29	4.76	1988-05-08	1988-05-08	0.008	0.039	0.059	0.314	0.47	0.39	5658	5415	95.705	1974-03-08	1995-01-31	4.236	33.7	38.7	50.5	63.7	113.4	676	657	0.0354	0.0164	0.1889		0.7594	0.0103	0.0031	0.1942		0.7924				1.0				0.29	0.172	0.999	16.1	50.09	31.5	40.2	10.9	12.27	6.47	51	194	0.34	33.7	16.82	1.174	0.831	0.2032	0.3949	0.901	1.078	0.5347	0.951	1.067	1994		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located on Yeading Brook West, a small tributary of the River Crane. The station was closed in 1995.	Flat V weir (width: 5.02m, 1:20 cross-slope) u/s of culvert below the Western Avenue. Station demolished 1995.	Limited depth of approach - structure drowns readily at low discharges (0.28 cumecs) but there is a satisfactory gauged rating. Control passes to the culvert d/s of the station. Since 1983 some bypassing has occurred via a feeder ditch. One rating applied across period of record. Capable of providing good quality data but persistant problems with the correct zero setting of the stage recorders in the 1970s.	Flow data recorded during 1995 was very unreliable and as verifying the GDF record was difficult the POR within the NRFA ceases at the end of July 1994.	Impervious, suburban catchment in NW London, including some of the runoff from Northolt Airport. Some agricultural land immediately u/s of the station.	Additional floodplain storage (provided as part of 1983 river improvement scheme) increased lag times.
39056	Ravensbourne at Catford Hill	120.4	TQ3722573255	537225.0	173255.0	51°26'30.0217"N 0°01'36.9769"W	51.44167	-0.02694	Ravensbourne	Catford Hill	14.5	EA-KSL	4370TH	39	1974-01-01		FL			19.9	true	true	false	true	false	false	false	true	false	false	true	false	false	G	1977-12-01	2023-09-30	0.363	0.033	2006-09-08	2006-09-09	8.323	2002-12-30	2002-12-30	0.074	0.149	0.215	0.753	1.166	0.48	16740	16740	100.0	1974-12-01		15.285	16.2	37.9	86.8	189.2	266.2	712	714	0.1663	0.1076	0.2239	0.0001	0.4967	0.1275	0.112	0.2623		0.4974	0.4011			0.5989	0.0582	0.1739		0.28	0.715	0.99	48.6	22.24	33.7	44.7	11.1	23.25	11.83	105	358	0.33	16.2	126.18	0.367	0.642	0.0613	0.2513	0.848	0.661	0.3429	0.908	0.691	1985..1986	1986-04-01..1987-03-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal flume; regime heavily affected by urbanisation.	Trapezoidal flume; breadth at the critical section: 4.267m; insensitive. Full range.	One rating applied across period of record. Rating adjusted from theoretical to better fit spot flow measurements. Due to flashy nature of channel, EA have been unable to capture flows in third limb of rating and so it remains unproven. Because of this, Limb 3 remains theoretical with no adjustment for spot flow measurements in lower limbs.	Full record reprocessed Feb 2019 when new rating was developed. Peak flows marked as rejected between 1986 and 1987 as ascending oscillations are present and appear suspicious. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The Ravensbourne rises as Tertiary sandstone springs in Keston Park (dry chalk valleys extend into the North Downs). The lower catchment is mainly impervious Eocene deposits. Below the headwaters the catchment is largely within London.	Artificial influences evident at low flows. Regime heavily affected by urbanisation. Artificial influences (including sewage outflow and urban runoff) very evident at low flows - see June 2009.
39057	Crane at Cranford Park	61.7	TQ1031277840	510312.0	177840.0	51°29'19.5309"N 0°24'45.2354"W	51.48876	-0.41257	Crane	Cranford Park	22.9	EA-HNL	3660TH	39	1974-01-01		FL			32.4	true	false	false	false	false	false	false	true	true	false	false	false	false	N	1978-04-03	2023-09-30	0.505	0.008	1982-08-16	1982-08-16	14.8	1988-05-08	1988-05-08	0.084	0.16	0.23	1.1	1.82	0.33	16617	16613	99.976				21.7	31.5	39.1	58.4	116.2	654	639	0.0471	0.0327	0.2392		0.6802	0.0237	0.0014	0.2508		0.7239				1.0	0.1545			0.29	0.23	0.997	15.3	48.3	32.0	41.0	11.2	22.73	11.25	43	180	0.19	21.7	52.78	1.097	0.963	0.1945	0.3508	0.877	1.034	0.4891	0.933	1.02			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flume located on the mid reaches of the River Crane. The regime is affected by complex water utilisation.	Non-standard critical depth flume improvised from the invert of a footbridge. Straight reach, banks stabilised by timber revetments. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Bypassing occurs on left bank above a stage of about 1.3m. Structure drowns at 1.2 m. Two ratings applied across period of record, the most recent is valid from April, 1978. Rating derived partly from hydraulic theory that does not accurately estimate flows. Flume is non-modular before QMED, which is not accounted for in the current rating.	Pre-1984 flows generally less reliable.	A flat, generally impervious (mostly London Clay) catchment of urban / suburban character. It includes Northolt Airport.	Complex water utilisation. Small natural import of water from the Colne catchment along the Duke of Northumberland's River. A relatively responsive regime.
39058	Pool River at Winsford Road	38.3	TQ3721472598	537214.0	172598.0	51°26'08.7771"N 0°01'38.4622"W	51.43577	-0.02735	Pool River	Winsford Road	16.9	EA-KSL	4369TH	39	1974-01-01		FL			24.9	true	false	false	false	false	false	false	true	false	false	false	false	false	G	1978-04-03	2023-09-30	0.272	0.022	1999-09-18	1999-09-18	5.11	2002-12-30	2002-12-30	0.089	0.138	0.18	0.52	0.784	0.55	16617	16493	99.254				17.9	31.4	53.0	91.0	146.8	658	664	0.1101	0.0107	0.1384		0.738	0.0634	0.0054	0.1504		0.7785				1.0	0.0348			0.29	0.526	0.977	31.0	32.44	33.8	43.3	11.1	11.08	6.38	57	13	0.29	18.0	35.79	0.558	0.825	0.0909	0.4187	0.879	0.928	0.5479	0.926	0.945			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal flume, runoff is reduced by groundwater abstractions.	Trapezoidal, critical depth flume constructed in 1974 located approximately 0.5km upstream of confluence with the Ravensbourne. The site replaces a previous station (Selworthy Road, 39827) that was located approximately 300m upstream of the current site and which was operational 1961-71. Removed from peak flows dataset in February 2018 (WINFAP Files v6).	Algal growth causes apparent higher flow than d/s site at Catford Hill (39056). Rating is derived theoretically for the structure and assumes no drowning or by-passing. Spot gaugings support the lower end of the rating but the maximum gauged flow is substantially below QMED. A 2009 modelling study confirmed the theoretical rating and found that the station doesn't drown and that all flow is contained within the structure to flows beyond QMED, so the rating curve is considered valid to above QMED. The rating history of the site is complex and has required flows to be reprocessed in the past. This has resulted from changes in measurement units and errors in rating derivation, rather than changes to the station control, however, and the current rating (FQ/migrated.V1) is considered definitive for the whole period of record in the absence of spot flow gaugings at higher stages.	Daily flows reprocessed from Jan 1985. Some earlier daily flow data (1961-71) exist for an u/s site - Selworthy Road (39827).	The Pool River rises as Chalk springs (below Addington Hill) but flows mostly over impervious Eocene deposits. Land use: primarily a suburban/urban catchment in south London.	Runoff is reduced by groundwater abstractions and artificial influences evident at low flows.
39061	Letcombe Brook at Letcombe Bassett	4.0	SU3748685325	437486.0	185325.0	51°33'56.0184"N 1°27'38.1141"W	51.56556	-1.46059	Letcombe Brook	Letcombe Bassett	105.6	EA-T	1761TH	39	1971-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	G	1971-05-01	2023-09-30	0.097	0.0	1976-06-30	1976-07-01	0.493	2014-02-11	2014-02-11	0.014	0.047	0.074	0.207	0.261	0.96	19146	18932	98.882				107.0	128.5	175.0	225.1	236.6	747	733	0.1137	0.275	0.5021		0.0304	0.0308	0.478	0.4828		0.0055	1.0							0.32	0.964	1.0	123.6	5.27	34.1	42.2	10.1	3.94	1.75	176	25	0.42	109.1	3.99	0.057	0.645	0.0113	0.0163	0.519	0.305	0.0053	0.387	0.132			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located in the upper section of Letcombe Brook, just downstream of Letcombe Brook at Arabellas Lake (39112).	Flat V weir (3.0m wide) superseded original rectangular notch (1.0 m wide) in 1981.		Gw augmentation noticeable (eg. 2004).	Rural catchment on scarp slope of the Lambourn Downs (Chalk - Drift free except for peat on the highest hills in the south). Catchment area derived from a Digital Terrain Model.	Baseflow dominated regime. Runoff suggests that the topographic catchment is considerably smaller than the actual contributing area. Flows substantially reduced by pumping from the Childrey Warren boreholes (gw pumping). This can impact substantially on low flow patterns. The ALF scheme was implemented in 1992.
39065	Ewelme Brook at Ewelme	13.4	SU6422591613	464225.0	191613.0	51°37'10.8653"N 1°04'25.3925"W	51.61968	-1.07372	Ewelme Brook	Ewelme	65.9	EA-T	1995TH	39	1970-01-01		FV				true	false	false	false	false	false	true	true	false	false	false	false	false	N	1970-07-01	2023-09-30	0.044	0.0	1973-09-19	2012-04-16	0.227	2014-03-15	2014-03-15	0.006	0.026	0.039	0.083	0.098	0.97	19450	17695	90.977				76.5	101.6	135.1	213.8	229.1	715	696	0.0869	0.3845	0.4885		0.0401	0.1581	0.6058	0.222	0.0049	0.0093	0.8496	0.1504			0.174	0.0513		0.29	0.933	1.0	78.4	8.28	31.7	40.3	11.1	6.69	3.66	146	286	0.39	76.5	11.98	0.086	0.494	0.0165	0.0011			0.011	0.511	0.271			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Headwater gauging station, based in a chalk catchment, that flows into the middle sections of the River Thames.	Flat V weir (width: 2m) installed in 1980 superseding (after 4-yr break) and built on top of a thin-plate weir (width: 1.524m). Significant pre-1950 artificial channel re-alignment in Ewelme.	Water level measured by radar sensor with pressure sensor for backup. Originally, a shaft encoder was used. Very long weir tail does not cause drowning as critical flow is achieved. Limited head - algal growth on crest can be a problem - flow is assumed (but not confirmed) to remain modular. Tail level is not measured. Gravel from river bed can build up on apron. Weeds (water crowfoot) can build up on apron when they are cut and not removed from the upstream channel.	Missing data from June 1976 to April 1980 due to weir replacement works. 2000/01 daily flows outstanding.	A rural/agricultural catchment developed on the scarp-slope of the Chilterns (Chalk with some Drift cover). Ewelme village is the largest settlement. Groundwater catchment is smaller than the topographical catchment.	Natural, stable flow regime (but local surface runoff can produce sub-daily events). Occasional bypassing via informal sluice upstream. Pristine chalk stream, gravel bed (but largely impermeable in some reaches). Cress beds downstream can impact flows through action of sluices (e.g. summer 2018). Upstream in-channel weed growth and clearance can impact flows.
39068	Mole at Dorking	316.0	TQ17995016	517990.0	150160.0	51°14'18.3462"N 0°18'40.3378"W	51.23843	-0.3112	Mole	Dorking	39.2	EA-KSL	3270TH	39	1971-01-01		C			19.4	true	false	false	false	false	false	false	true	false	false	false	false	false	GE	1971-11-01	2023-09-30	3.798	0.446	1972-09-04	1972-09-04	98.4	2000-11-06	2000-11-06	0.799	1.18	1.77	8.99	14.4	0.42	18962	18260	96.298				39.1	55.8	77.1	123.4	241.4	791	783	0.2243	0.2005	0.3473	0.0006	0.2137	0.2013	0.193	0.4236	0.0019	0.1755	0.1438	0.1911	0.6316	0.0335	0.0804	0.0312	0.0136	0.36	0.437	0.962	40.5	40.64	34.7	46.1	11.5	39.75	24.64	84	359	0.11	39.5	317.23	1.205	0.967	0.1572	0.0533	0.691	1.092	0.1067	0.86	1.082			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir (15.0m broad) superseded original mill weir (velocity-area rated) in 1978.	Crump weir with side channel for old mill, which rejoins the main river downstream.	Crump weir is modular to structurefull. All but very high flows contained. British standard weir calculation with tail correction.	No flow data 03/76-01/78.	Impervious (mostly Weald Clay) catchment. Mixed land use with considerable urban/suburban development.	Significant net import of water (sewage effluent).
39069	Mole at Kinnersley Manor	142.0	TQ2624546209	526245.0	146209.0	51°12'04.1582"N 0°11'39.8578"W	51.20116	-0.1944	Mole	Kinnersley Manor	48.0	EA-KSL	3240TH	39	1972-01-01		MIS			19.3	true	false	false	false	false	true	false	false	false	true	true	true	true	E	1972-12-01	2023-09-30	2.446	0.122	1976-09-01	1976-09-01	65.7	2013-12-24	2013-12-24	0.365	0.681	1.07	5.64	10.1	0.38	18566	18018	97.048				48.6	56.9	74.1	120.2	175.2	808	795	0.2415	0.1478	0.3139	0.0012	0.2807	0.2258	0.1362	0.3826	0.0013	0.2509		0.3586	0.6414		0.1256		0.0139	0.36	0.445	0.955	29.5	41.53	35.1	46.9	11.6	23.54	13.84	81	355	0.25	50.1	146.14	1.591	0.777	0.2229	0.0738	0.722	0.977	0.1509	0.879	0.941			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular flume, levels respond quickly to rainfall.	Rectangular flume, 7.1m wide at throat, and 1.48m wide rectangular side sluice. Removed from peak flows dataset in February 2018 (WINFAP Files v6).	Flow bypasses the weir above 2.4m head (30 m3/s). Considerable flow in the road at levels approaching 3 m. Calibration based on current meter gaugings which extend beyond bankfull. Bypassing occurs at flows >30m3s-1; flows therefore uncertain in the highest range. One rating applied across period of record. Calibration based on current meter gaugings which extend beyond bankfull; rating overestimates flow beyond bankfull and is increasingly uncertain above 2.4m stage.	Patchy record in the 1970's.	A largely impervious catchment (mostly Weald Clay)but more permeable headwaters. Very mixed land use of rural tracts and urban centres; Crawley and Gatwick Airport are in the catchment.	Responsive regime (reflecting growing urban contribution) and substantial effluent component (STWs at Crawley, Horley and Burstow) with a significant net import which has increasing over time (runoff therefore unrepresentative); otherwise moderate impact of artificial influences. Urban extent almost doubled between 1960 and 2002. Levels respond quickly to rainfall.
39071	Thames at Ewen	63.7	SU0074697314	400746.0	197314.0	51°40'28.5425"N 1°59'26.1966"W	51.6746	-1.99061	Thames	Ewen	100.5	EA-T	0130TH	39	1979-01-01		FV		6.2		true	false	false	false	false	false	false	true	false	false	false	false	false	G	2002-04-03	2023-09-30	0.613	0.0	2002-09-01	2022-11-20	4.74	2012-12-24	2012-12-24	0.0	0.045	0.211	1.919	2.77	0.68	7851	7851	100.0				94.1	113.0	146.7	181.4	217.2	887	815	0.1975	0.5187	0.2499		0.0307	0.1714	0.5958	0.2188	0.0011	0.013	1.0						0.0219	0.32	0.824	1.0	32.4	14.96	33.9	44.6	10.2	17.65	9.06	147	141	0.43	94.2	63.2	0.483	0.896	0.0692	0.0069	0.527	0.796	0.0062	0.665	1.095			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir. It is the nearest gauging station to the source of the Thames.	Upgraded to full-width Flat V in 2002, full range capability. Previously, a Flat V weir (4.0 metres broad, 1:10 cross-slope) with thin-plate overfalls. It is not considered a primary station.	Pre-2002 weir was very prone to drowning. Current weir is slightly prone to drowning.	Pre-2002 data removed from NRFA as it was very prone to drowning, resulting in incomplete high flow record.	A small rural Cotswolds catchment developed on permeable Middle Jurassic formations (mostly Upper Oolite).	Zero discharge during extended droughts. Gw abstractions in catchment result in a small net export of water. Flows can be affected by weed growth. Flows can go slightly out-of-bank.
39072	Thames at Royal Windsor Park	7046.0	SU98047724	498040.0	177240.0	51°29'08.2456"N 0°35'21.9283"W	51.48562	-0.58942	Thames	Royal Windsor Park	13.5	EA-T	2700TH	39	1979-01-01		US				true	false	false	false	false	false	false	true	true	false	true	false	false	RPGEI	1979-07-20	2023-09-30	59.081	8.231	2022-08-14	2022-08-14	391.0	2003-01-05	2003-01-05	14.7	26.5	40.5	128.0	172.8	0.72	16144	16144	100.0				17.5	59.9	104.7	187.4	330.2	716	696	0.1319	0.4054	0.3403	0.002	0.1038	0.1025	0.4616	0.341	0.0067	0.0807	0.4012	0.1218	0.2669	0.2101	0.1218	0.0524	0.0771	0.3	0.661	0.954	41.0	26.09	32.3	40.7	10.6	231.54	132.09	115	115	0.1	17.9	7125.17	1.483	0.975	0.1533	0.0325	0.673	0.814	0.0464	0.832	0.751			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Multi-path ultrasonic gauging station based in the lower River Thames catchment.	Multi-path US superseded, in 1988, original single-path configuration (installed 1978).	Post-1992 gaps filled by using equi-percentile flows with Reading (39130) as a surrogate, earlier gaps filled using Kingston (39001) naturalised flows as a surrogate. Calibration confirmed by gaugings.	All but exceptional floods contained. 01/2003 peak: c405 cumecs.	Scarp and vale topography developed on diverse geology. Predominantly rural headwaters contrast with considerable suburban growth in the lower valley. Representative of large lowland catchments in England.	Baseflow from the Chalk and Oolitic L'st, quicker response from the Oxford Clay and Lower London Tertiaries. Station is u/s of the major PWS off-takes for London.
39073	Churn at Cirencester	84.0	SP0201302863	402013.0	202863.0	51°43'28.1431"N 1°58'20.1262"W	51.72448	-1.97226	Churn	Cirencester	111.2	EA-T	0260TH	39	1979-01-01		FV		9.4	21.1	true	false	false	false	false	false	false	true	false	false	false	false	false	GE	1979-07-01	2023-09-30	0.78	0.0	2003-10-10	2003-11-16	4.43	2000-12-15	2000-12-15	0.056	0.22	0.52	1.91	2.32	0.91	16163	16163	100.0				110.1	156.4	214.8	266.5	295.1	879	854	0.2196	0.3374	0.3853		0.0485	0.1709	0.3928	0.4205	0.006	0.0096	0.9316		0.0684				0.0205	0.33	0.843	0.95	94.5	13.5	35.1	46.5	10.5	23.13	13.31	213	155	0.18	110.1	83.15	0.217	0.645	0.0226	0.0065	0.428	0.738	0.0076	0.586	0.775			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located in the middle section of the River Churn just above Cirencester, in the western Thames Basin.	Flat V weir (1:10 cross-slope, 4.5m broad). Auxiliary d/s water level recorder.		All flows contained but bypassing can occur at very high flows (as in late 2000); hydrographs appear truncated. Zero flows occur during notable droughts.	Pervious (Oolitic L'st) catchment on the dip-slope of the Cotswolds. Primarily rural with small, scattered settlements.	Baseflow-dominated regime. Significant diminution of runoff due to groundwater and surface water abstractions.
39074	Ampney Brook at Sheepen Bridge	74.4	SU1058595042	410585.0	195042.0	51°39'14.6518"N 1°50'54.2113"W	51.65407	-1.84839	Ampney Brook	Sheepen Bridge	78.0	EA-T	0490TH	39	1980-01-01		FV		9.4	60.0	true	false	false	false	false	false	false	false	false	false	true	false	false	P	1980-01-01	2023-09-30	0.766	0.0	1982-08-20	2022-10-22	7.93	1994-12-28	1994-12-28	0.0	0.17	0.49	1.99	2.962	0.73	15979	15851	99.199				79.1	90.7	128.1	190.5	250.9	807	777	0.0901	0.5413	0.3343		0.0308	0.0443	0.6084	0.3348	0.0029	0.0094	0.8841		0.1159		0.0201		0.0552	0.32	0.743	0.975	29.3	20.59	33.1	41.7	10.1	27.05	13.45	135	154	0.42	79.1	70.19	0.836	0.606	0.1262	0.0098	0.457	0.73	0.0066	0.627	0.666			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the upper River Thames catchment on Ampney Brook.	Flat V weir (1:10 cross-slope, 4.5m broad). Often drowned.	Calibration under review - gaugings indicate that the drowned flow reduction factor (based on tailwater levels) over-compensates for non-modularity. Limited head at low flows, therefore insensitive.		The Ampney Brook rises in the pervious Great Oolite series but the lower catchment is principally Oxford Clay. A rural catchment.	Some bypassing at highest flows. Small diminution of flow due to abstraction, otherwise a naturally responding catchment.
39075	Marston Meysey Brook at Whetstone Bridge	25.0	SU1276496492	412764.0	196492.0	51°40'01.4244"N 1°49'00.6326"W	51.66706	-1.81684	Marston Meysey Brook	Whetstone Bridge	75.9	EA-T	0530TH	39	1980-01-01		FV		1.5		true	false	false	false	false	false	false	false	false	false	false	false	false	G	2001-01-01	2023-09-30	0.412	0.0	2001-07-24	2020-08-03	9.299	2013-12-24	2013-12-24	0.0	0.014	0.067	1.003	2.563	0.33	8308	7996	96.245				77.2	83.5	102.5	128.3	148.3	754	711	0.0554	0.6183	0.2697		0.0544	0.0195	0.7582	0.2097	0.0009	0.0117	0.7141		0.2859		0.0628			0.32	0.642	1.0	15.9	26.72	31.9	38.7	9.8	10.81	6.36	104	173	0.5	77.2	21.69	1.174	0.777	0.2068	0.0111	0.584	0.785	0.0069	0.84	0.752			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located on Marston Meysey Brook, in the upper River Thames catchment.	Flat V weir (1:10 cross-slope, 3.0m broad).		Some high flows are estimated or omitted.	The Marston Meysey Brook rises in the Great Oolite Series (pervious) but is predominantly impervious (Oxford Clay). Rural.	Intermittent flow. Runoff reduced by gw abstractions, also occasional direct augmentation from gw (e.g. during pumping tests throughout Aug 1983).
39076	Windrush at Worsham	296.0	SP3014010658	430140.0	210658.0	51°47'37.5607"N 1°33'51.7860"W	51.79377	-1.56438	Windrush	Worsham	90.6	EA-T	1080TH	39	1976-01-01		US			13.5	true	false	false	false	false	false	false	false	false	false	false	false	false	PN	1942-10-01	2023-09-30	2.632	0.268	1944-08-12	1944-08-12	25.94	2020-12-24	2020-12-24	0.702	1.22	1.799	5.39	7.38	0.83	29585	22251	75.21				90.0	130.9	195.2	257.3	317.2	784	763	0.138	0.4672	0.3492	0.0	0.0332	0.0896	0.4861	0.4089	0.0033	0.0102	0.7691		0.2309		0.0026		0.0322	0.33	0.816	0.971	67.9	15.34	34.5	43.1	10.7	49.03	28.88	195	133	0.18	90.0	294.91	0.368	0.765	0.0427	0.0089	0.472	0.878	0.0073	0.69	0.802			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The ultrasonic gauging station is located in the middle reaches of the River Windrush.	Multi-path ultrasonic commissioned in December, 1995. Previously two adjustable radial gate (sharp-crested) weirs.	It is principally a low flow station. Flood flows are commonly not calculated.	Some early flow data (from 1942) held by the measuring authority for the original rhymer weir. There is also a very patchy record pre-1977. Drowning is very rare but high flows are unreliable.	A pervious (Oolitic L'st) catchment (with some low-permeability tracts) on the dip-slope of the Cotswolds. Predominantly rural - Witney is the largest settlement.	Large baseflow component but responsive to storm events. Negligible disturbance to the natural flow regime.
39077	Og at Marlborough Poulton Fm	59.2	SU1926569837	419265.0	169837.0	51°25'37.9762"N 1°43'27.4648"W	51.42722	-1.7243	Og	Marlborough Poulton Fm	124.9	EA-T	2219TH	39	1980-01-01		FV		3.3	30.0	true	false	false	false	false	false	false	false	false	false	false	false	false	G	1980-06-01	2023-09-30	0.345	0.0	1990-12-13	1990-12-24	3.72	2003-01-02	2003-01-02	0.011	0.093	0.213	0.818	1.17	0.95	15827	15827	100.0				124.3	153.1	180.0	240.5	276.0	804	768	0.072	0.5132	0.3522		0.0205	0.0213	0.6176	0.3493	0.0016	0.0102	1.0			0.0	0.0425	0.0541		0.33	0.971	1.0	71.8	4.6	31.0	39.7	10.1	16.72	8.65	187	106	0.15	124.3	63.95	0.369	1.043	0.0624	0.0074	0.458	0.876	0.0045					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located on the River Og, a headwater tributary of the River Kennet.	Flat V weir (width: 3.0m) with auxiliary d/s recorder.	Seasonal weed growth causes drowning.		The Og drains from the Chalk of the Marlborough Downs; very limited Drift cover. A rural catchment.	Gw abstraction in the headwaters otherwise flow regime is natural and dominated by baseflow.
39078	Wey (North) at Farnham	191.12	SU8367346263	483673.0	146263.0	51°12'34.0359"N 0°48'12.8068"W	51.20945	-0.80356	Wey (North)	Farnham	63.5	EA-T	3020TH	39	1978-01-01		MIS			38.9	true	false	false	false	false	false	false	true	false	false	false	false	false	GE	1978-02-01	2023-09-30	0.825	0.084	2005-09-02	2005-09-02	17.99	2020-02-16	2020-02-16	0.19	0.375	0.559	1.649	2.37	0.73	16678	16597	99.514				64.6	105.2	159.7	199.1	245.6	890	868	0.1475	0.4818	0.2884	0.0003	0.0729	0.1375	0.5034	0.3088	0.0017	0.0482	0.8067	0.1302		0.0631	0.0433	0.3721		0.35	0.865	0.984	55.3	12.81	36.1	48.4	10.9	40.27	22.25	153	64	0.06	64.8	192.61	0.318	0.951	0.0442	0.0131	0.569	0.674	0.0287	0.762	0.798			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located on the River Wey near Farnham.	Modified Crump weir (width: 9.14m) with thin-plate along the crest line.	Calibration is theoretically and is based on a few confirmatory gaugings. Non-modular at high flows - also possible bypassing via culvert immediately u/s.	August 1997 dmfs estimated.	A mainly Chalk catchment with Gault Clay in the lower reaches. Predominantly rural, some urban development on the watershed and close to the station.	High baseflow component but very responsive to rainfall. Runoff considerably diminished by gw abstractions in the headwaters.
39079	Wey at Weybridge	1008.0	TQ06856483	506850.0	164830.0	51°22'20.9437"N 0°27'58.7861"W	51.37248	-0.46633	Wey	Weybridge	9.2	EA-T	3090TH	39	1979-01-01		US				true	false	false	false	false	false	false	true	false	false	true	false	false	PG	1979-03-16	2023-09-30	7.503	1.26	1997-07-24	1997-07-24	78.3	2020-02-17	2020-02-17	2.51	4.01	5.3	14.42	21.1	0.66	16270	15506	95.304				9.8	39.7	90.6	178.5	291.4	804	792	0.3049	0.2343	0.2708	0.021	0.1608	0.2838	0.228	0.3313	0.0359	0.1177	0.6016	0.0401	0.0856	0.2727	0.0875	0.0795	0.0187	0.34	0.723	0.944	55.4	23.03	35.1	46.3	11.5	102.84	53.23	101	357	0.1	9.8	903.89	0.828	0.731	0.0956	0.0323	0.588	0.755	0.0681	0.807	0.779			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The ultrasonic gauging station monitors the complete River Wey system.	A multi-path cross-configuration ultrasonic replaced a single-path US (Harwell design) in 2003.	Gaugings were used to develop adjustment factors. Weed-growth, low velocities and velocity distribution caused problems.	No data between January 2019 and July 2020 due to gauge failure.	Diverse geology and land use. Largely permeable upper catchment (Chalk and Upper Greensand of the North Downs); impermeable Tertiary formations dominate the lower catchment. Land use: rural tracts with mixed woodland; considerable suburban development below the headwaters.	U/s storage produces some flood attenuation. Responsive regime. The confluence with canal is just u/s.
39081	Ock at Abingdon	234.0	SU4814896667	448148.0	196667.0	51°40'00.2098"N 1°18'18.8051"W	51.66672	-1.30522	Ock	Abingdon	51.4	EA-T	1790TH	39	1979-01-01		CC		22.7	20.3	true	true	false	true	false	false	false	true	true	true	false	false	true	GE	1962-10-01	2023-09-30	1.582	0.111	1976-08-23	1976-08-23	25.89	2007-07-22	2007-07-22	0.34	0.572	0.917	3.61	5.24	0.65	22280	21973	98.622	1979-06-01		10.4	49.9	61.0	80.3	124.3	260.0	647	639	0.0759	0.5284	0.3217		0.0634	0.042	0.5965	0.3231	0.0038	0.0336	0.1068	0.3072	0.2887	0.2973	0.1497		0.1012	0.31	0.623	0.986	23.8	29.95	32.2	39.6	9.7	34.06	16.97	88	58	0.22	50.0	233.6	1.162	0.851	0.2022	0.0186	0.63	0.942	0.0182	0.759	0.912	1978		gdf;gmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	It is the main flow measuring structure on the River Ock, just upstream of another peak flow station within Abingdon (39018) that it superseded.	Crump weir, 7.79m wide, with auxiliary d/s tapping. Superseded original compound structure in 1979 (with associated gaps in the record). Due for fish passage baffles FY 2019-20.	Substantial channel improvements but drowning became more frequent again. Standard Crump weir calculation using tail levels. Part of the weir is subject to non-modular flow conditions (0.5m), as the channel splits into a high and low level channel on the d/s side of the weir. Inaccurate at low flows, but otherwise reasonably accurate. Slight overestimation could result in anomalies at higher flows. A flood forecasting rating is available which estimates total flows including those on the flood plain. Sandford Brook flows into the side channel just downstream of the structure (piped from left bank under the channel).	Although hydrometrically much improved it is still imprecise at low flows. Substantial channel improvements were completed but the weir drowns during floods and overspill can occur into Sandford Brook. This was more common pre-1979. There are doubts about the homogeneity of peak flows. No flow adjustment made. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9) and in August 2024 (WINFAP Files v13).	Flat, rural valley in Vale of The White Horse. Largely flat, rural valley in Vale of The White Horse. Mixed geology that is largely pervious. Chalk downland forms southern watershed while the remainder mostly Tertiary clays. Geology includes Corallian Beds, Greensand, Chalk, Kimmeridge Clay, Gault & Alluvium. Contributing area exceeds topographical catchment.	Runoff influenced by a significant number gw abstraction/recharge. Runoff augmented by sewage effluent (derived from outside catchment).
39084	Brent at Brent Cross	36.4	TQ2361088025	523610.0	188025.0	51°34'39.1595"N 0°13'03.2026"W	51.57754	-0.21756	Brent	Brent Cross	40.7	EA-HNL	3820TH	39	1980-01-01		TP				true	false	false	false	false	false	false	true	false	false	false	false	false	GI	1989-01-01	2023-09-30	0.344	0.046	2012-09-09	2012-09-09	13.3	1993-10-12	1993-10-12	0.066	0.098	0.142	0.763	1.28	0.34	12691	12691	100.0				40.5	60.9	84.9	115.1	145.0	697	684	0.1042	0.0509	0.2419	0.0	0.6026	0.0853	0.0263	0.3054	0.0011	0.5819				1.0	0.0609		0.1372	0.29	0.222	0.991	46.3	48.51	33.6	44.0	11.0	13.74	6.43	86	185	0.07	40.5	36.53	0.384	0.937	0.0468	0.3295	0.862	0.801	0.4379	0.931	0.799			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the upper Brent Catchment, North London.	Rectangular thin-plate weir with rectangular notch.	Limited number of check gaugings, highest at 4.1 cumecs; they suggest that calibration modestly overestimates high flows.		Urban/suburban catchment in north-west London.	Debris in channel can be a problem. Very responsive regime.
39085	Wandle at Wandle Park	176.1	TQ266703	526600.0	170300.0	51°25'03.3177"N 0°10'50.8219"W	51.41759	-0.18078	Wandle	Wandle Park	10.7	EA-KSL		39	1936-01-01	1960-12-31	FL				true	false	false	false	false	false	false	false	false	false	false	false	false		1936-10-01	1960-04-30	1.595	0.566	1938-07-03	1938-07-03	6.145	1940-03-26	1940-03-26	0.903	1.192	1.416	2.396	2.945	0.81	8613	4200	48.763				12.0	35.8	135.9	189.8	268.4	741	738	0.2038	0.0947	0.251	0.0001	0.4486	0.1509	0.0951	0.2981	0.0	0.4553	0.7505	0.0003		0.2492	0.1566	0.2762	0.0167	0.31	0.816	0.982	63.1	17.48	33.2	43.2	10.9	32.14	18.76	124	344	0.32	12.1	153.52	0.366	0.57	0.061	0.1925	0.768	0.663	0.3001	0.875	0.728			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flume.		Hydrometric performance not documented.	Patchy flow record but useful late 1930s data. 1956 peak should be considered as indicative only. Contemporary flows in the lower Wandle available for station 39003.
39086	Gatwick Stream at Gatwick Link	33.6	TQ2851941717	528519.0	141717.0	51°09'36.9986"N 0°09'48.5262"W	51.16028	-0.16348	Gatwick Stream	Gatwick Link	54.7	EA-KSL	3229TH	39	1975-01-01		C			20.0	true	true	true	true	false	false	false	false	false	false	false	false	false	E	1975-10-01	2023-09-30	0.736	0.108	1976-08-15	1976-08-15	12.4	1976-11-12	1976-11-12	0.264	0.363	0.491	1.407	2.02	0.6	17532	17494	99.783	1975-10-01		9.909	55.5	64.9	101.6	139.2	172.4	845	830	0.4171	0.094	0.1626	0.0032	0.3155	0.4184	0.0701	0.1991	0.0059	0.3005		0.8564	0.1436		0.1517			0.36	0.597	0.946	47.9	34.46	36.6	48.8	11.9	15.52	8.93	102	342	0.29	55.9	32.62	0.828	0.648	0.1034	0.0767	0.746	0.717	0.1744	0.885	0.673			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a mainly impervious catchment which responds quickly to rainfall.	Crump weir (4.6m broad) with crest-tapping (almost permanently blocked but weir remains modular except during exceptional floods); located at the end of a culvert. Superseded earlier u/s velocity-area station, 1952-1977.	Modular apart from exceptional discharges. One rating applied across period of record. Rating uses a modelled rating that accounts for drowning over the full period of record.	Weir records begin in 1975. Rating adjusted in 1990 to include drowned flow, and back-dated over record. Records also exist from 1952-1977 for a rated section at a site 2 km u/s (station 39024); accuracy at this site was poor. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Mixed geology but mainly impervious (Weald Clay). Mixed land use with significant urban and forested areas. Catchment does not include Gatwick Airport.	Very responsive to rainfall and flow pattern affected by sewage effluent and urban runoff; large net import to the catchment. Urban extent more than doubled between 1960-2002.
39087	Ray at Water Eaton	84.1	SU12109352	412100.0	193520.0	51°38'25.2783"N 1°49'35.5621"W	51.64036	-1.82655	Ray	Water Eaton	75.9	EA-T	0390TH	39	1974-01-01		US			14.0	true	false	false	false	false	false	false	false	false	false	true	false	false	GE	1974-02-01	2023-09-30	1.396	0.0	2017-01-26	2017-02-13	22.6	1974-09-27	1974-09-27	0.465	0.659	0.894	2.75	4.189	0.57	18139	17692	97.536				78.0	84.0	103.4	137.3	212.1	696	698	0.0558	0.1845	0.4608		0.2848	0.0372	0.172	0.4479	0.012	0.3286	0.031	0.2019	0.7085	0.0587	0.0003		0.0466	0.34	0.386	0.992	27.4	42.6	30.8	37.4	9.6	21.18	12.24	109	10	0.18	78.0	81.55	1.565	0.831	0.2169	0.124	0.786	1.103	0.1735	0.895	1.084			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A ultrasonic gauging station located on the River Ray, in the upper Thames catchment.	Multi-path US superseded (in 1989) a Crump weir (width: 5.195m) with crest and d/s recorders.		Thames backwater caused frequent drowning and high submergence ratios thus flood data are of limited precision.	The Ray rises in the Marlborough Downs and drains a relatively flat, mainly impervious, catchment. Largely agricultural land use but very substantial and growing urban component (Swindon).	Responsive regime. Flows heavily influenced by Swindon runoff (sewage effluent, balancing ponds etc.). A net import of water results.
39088	Chess at Rickmansworth	105.0	TQ0657394809	506573.0	194809.0	51°38'31.1799"N 0°27'40.5262"W	51.64199	-0.46126	Chess	Rickmansworth	47.1	EA-HNL	2859TH	39	1974-01-01		C			22.3	true	true	true	true	false	false	false	true	true	false	false	false	false	PGE	1974-07-01	2023-09-30	0.541	0.053	1976-08-28	1976-08-28	2.34	2001-04-26	2001-04-26	0.18	0.36	0.486	0.938	1.08	0.95	17989	17989	100.0	1974-07-01		1.13	47.7	97.6	157.8	201.2	266.2	763	753	0.1791	0.3549	0.3346		0.1243	0.1461	0.3148	0.4502	0.0018	0.0858	1.0				0.0447	0.5297	0.0416	0.3	0.692	0.958	59.1	30.32	35.0	43.0	11.3	27.82	17.26	153	127	0.29	48.2	96.92	0.249	0.803	0.0368	0.0317	0.582	0.917	0.0559	0.83	0.861	1973		gdf;gmf;cmr;cdr;cdr-d;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the lower catchment of the River Chess.	A crump weir (6.0m broad) with d/s recorder for non-modularity adjustment. Used for both water resource and flood warning/forecasting purposes.	Full range station but non-modular at high flows (tail levels monitored). A very small channel that is fed from a spring approximately 150m upstream, bypasses the weir and enters the river just downstream. The modular limit is c 0.23m. Extremely non-modular flows can occur but instances are rare. Protected flows derived from standard Crump weir equation using tail levels. Weir equation used since construction.	Generally a very reliable record throughout the range of flows. Periods of extremely non-modular flows in Feb 2001. Tail level adjustments used but surrounding data suggests the reduction factor has underestimated the true flow. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	The Chess is a Chalk stream draining the dip-slope of the Chilterns (significant Drift cover). Headwaters are rural with significant urban growth in the lower valley. Chesham is the largest town.	Baseflow-dominated flow regime but artificial influences (primarily STW effluent) evident on the hydrograph. Abstractions are of a mainly low consumptive type with some gw abstractions for PWS. There is a small net export from the catchment.
39089	Gade at Bury Mill	48.2	TL0532607648	505326.0	207648.0	51°45'27.4527"N 0°28'31.4331"W	51.75763	-0.4754	Gade	Bury Mill	86.5	EA-HNL	2841TH	39	1968-01-01		FL			23.3	true	true	true	true	false	false	false	true	true	false	false	false	false	G	1975-04-01	2023-09-30	0.156	0.004	1976-12-05	1976-12-05	0.897	2001-02-22	2001-02-22	0.031	0.089	0.128	0.3	0.388	0.93	17715	17715	100.0	1968-01-01		0.609	86.0	115.9	157.7	195.7	241.3	724	724	0.2522	0.439	0.2246		0.0842	0.232	0.347	0.3675	0.0011	0.0523	0.9542			0.0458	0.0653	0.4737	0.0249	0.3	0.7	0.979	63.5	29.48	33.7	40.5	10.8	15.45	8.35	156	118	0.23	86.2	44.73	0.258	0.932	0.0402	0.0223	0.568	0.541	0.0333	0.809	0.536			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the upper catchment of the River Gade, a tributary of the River Colne.	Rectangular flume with side contractions installed by Hemel Hempstead Development Corporation in the mid 1960s. The station was operated by the local authority until the mid 1970s when its operation passed to Thames Water.	A leak in the stilling well was discovered in 1990. The original instrumentation was a Lea Integrating recorder and early records were of poor quality. Vandalism and debris in channel can create problems. One rating applied across period of record. Rating has tendency to underestimate peak flows.	There is a trash screen just u/s of the g/s. Historically the screen and/or channel can become blocked causing the river to flow out of banks, flooding Gade Park and bypassing the station. Excess flows d/s of the g/s divert into a culvert that emerges d/s of Hemel Hempstead.	Dip-slope stream draining the Chilterns. The solid geology is Chalk with some tertiary and extensive boulder clay cover. A mainly rural catchment draining to Hemel Hempstead (part of which is u/s of the station).	Baseflow-dominated regime with significant artificial disturbance. The urban response runoff has a significant effect on flood peaks. Balancing ponds u/s within built-up area.
39090	Cole at Inglesham	140.0	SU20829695	420820.0	196950.0	51°40'15.3881"N 1°42'01.2032"W	51.67094	-1.70033	Cole	Inglesham	72.7	EA-T	0790TH	39	1976-01-01		CC				true	true	false	true	false	false	false	false	true	false	true	false	false	G	1976-10-01	2023-09-30	1.257	0.049	1976-10-13	1976-10-13	37.7	2007-07-21	2007-07-21	0.139	0.35	0.644	2.82	4.4	0.52	17166	17135	99.819	1976-10-01		13.9	71.6	85.7	100.8	165.0	275.9	680	682	0.0724	0.4152	0.361		0.1321	0.0308	0.4937	0.3309	0.0027	0.1382	0.1495	0.2851	0.3706	0.1947	0.0022		0.0824	0.31	0.53	0.969	29.3	34.21	30.5	38.8	9.5	31.13	16.36	111	4	0.18	71.6	139.79	1.472	0.942	0.2078	0.0573	0.73	1.251	0.0655	0.859	1.269			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station, located in the lower River Cole catchment, forms part of the structure that splits the channel into two distributaries that flow into the River Thames.	Compound Crump Weir (high central crest).	The channel divides immediately below the weir, so levels in the left channel are higher than in the right channel. Part of the structure (left-hand side) is subject to non-modular conditions due to the differing levels in the weirs and this can cause significant data processing problems. Drowning, due to weed growth in summer, is likely. Standard Crump weir equation (summation of 3 crests) using tail levels. Tail reduction is employed in the left hand weir. Seems to estimate flows well.	Peak flows, calculated before the current methods of calculation (pre-1992), may be too low as the whole weir was assumed to be drowned. D/s correction only applied to part of the structure, so some overestimation at extreme flows. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Chalk scarp headwaters but catchment is largely low-lying and impervious (clay). A mainly rural catchment with urban growth below the headwaters. The rapid development of eastern Swindon has been a recent major change. Storage ponds are also a catchment feature near Swindon.	Responsive regime with some baseflow from the Chalk. Runoff is influenced by gw abstraction/recharge.
39091	Misbourne at Quarrendon Mill	66.29	SU975963	497500.0	196300.0	51°39'25.3462"N 0°35'30.8976"W	51.65704	-0.59192	Misbourne	Quarrendon Mill	83.6	EA-HNL		39	1978-01-01	1985-12-31	B				true	false	false	false	false	false	false	false	false	false	false	false	false	G	1978-09-01	1985-03-31	0.12	0.009	1978-10-14	1980-10-02	0.728	1983-01-31	1983-01-31	0.019	0.055	0.089	0.257	0.381	0.81	2404	2373	98.71				81.5	120.5	163.2	208.5	252.4	781	767	0.2243	0.42	0.2372		0.111	0.1912	0.3947	0.3262	0.0033	0.0836	1.0				0.0479	0.4228	0.035	0.3	0.722	0.933	64.7	26.6	36.1	43.7	11.6	20.36	10.52	163	119	0.19	81.5	65.88	0.206	0.968	0.0356	0.0308	0.546	0.568	0.0497	0.802	0.617			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the upper reaches of the River Misbourne.	Informal broad-crested control - secondary station, superseded in 1984 by the new Denham Lodge station d/s.			The Misbourne is a dip-slope stream draining from the Chilterns - Chalk with a little Drift cover. Significant residential development in the valley but a largely rural (Green Belt) catchment given over to agriculture with scattered tracts of coniferous and mixed woodland.	Complex baseflow dominated regime (the Misbourne has a number of influent reaches). Substantial gw abstraction (especially for Aylesbury and Amersham) - historical decline in Misbourne flows.
39092	Dollis Brook at Hendon Lane Bridge	25.1	TQ2400089567	524000.0	189567.0	51°35'28.7398"N 0°12'40.9930"W	51.59132	-0.21139	Dollis Brook	Hendon Lane Bridge	46.4	EA-HNL	3809TH	39	1952-01-01	2014-05-14	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1979-01-03	2014-05-12	0.201	0.0	1983-10-04	2014-05-12	6.06	1993-10-12	1993-10-12	0.021	0.049	0.081	0.466	0.78	0.3	12914	12683	98.211				45.2	63.6	88.0	118.9	145.0	702	689	0.0958	0.0725	0.3209		0.5103	0.0642	0.0407	0.3976	0.0018	0.4958				1.0	0.0792		0.0297	0.29	0.178	0.99	49.4	50.52	33.4	43.7	10.9	11.92	6.16	89	135	0.19	45.2	23.61	0.378	0.944	0.0466	0.2503	0.842	0.838	0.3433	0.926	0.816			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station is located on Dollis Brook, within the upper catchment of the River Brent. The station was closed on the 13/05/2014 due to major siltation issues affecting flow measurements.	Flat V weir has replaced a compound broad-crested weir with rectangular thin-plate inset. Removed from peak flows dataset in May 2016 (WINFAP Files v4).	It suffers from a lack of confirmatory gaugings and severe siltation (both u/s and of the stilling well) though this is occasionally moderated by flushing via a sluice below weir. This can seriously affect hydrometric performance e.g. summer 2007. Unlikely to drown as there is a 2m drop over weir. Accumulation point for urban debris (trolleys, tyres, etc), especially in the u/s channel. Protected flows derived from standard flat V weir equation. Modular throughout the flow range. Poor fit to gaugings which precede rebuild in 1994. Lack of gaugings since the station was rebuilt in 1994. In April 2010, major de-silting works took place which restored operation for a time, however the scale and cost of ongoing maintenance was prohibitive to keeping the station operable.	Some anomalous low flows (e.g. March 1997). Time series should be used with caution.	Catchment in north-west of London that contain the suburbs of Barnet and Hendon. There are significant rural tracts in the western headwaters. the geology is entirely London Clay of Eocene age. It is largely Drift free.	Very responsive regime.
39093	Brent at Monks Park	117.6	TQ2019485052	520194.0	185052.0	51°33'05.6276"N 0°16'04.2393"W	51.55156	-0.26784	Brent	Monks Park	24.5	EA-HNL	3850TH	39	1939-01-01		FL		34.0	29.2	true	true	false	true	false	false	false	true	false	false	false	false	false	S	1978-12-01	2023-09-30	0.946	0.057	1979-09-29	1979-09-29	21.5	1988-05-08	1988-05-08	0.125	0.245	0.445	2.23	3.55	0.23	16375	16375	100.0	1938-01-01		25.585	27.2	44.1	67.6	110.0	153.2	691	675	0.0915	0.0395	0.1839	0.0005	0.6792	0.0699	0.0286	0.2064	0.0005	0.6895				1.0	0.0659		0.0473	0.29	0.197	0.93	38.4	49.66	32.9	42.4	10.8	19.42	9.71	72	168	0.18	27.5	105.94	0.654	0.819	0.087	0.372	0.884	0.876	0.4781	0.939	0.881	1937		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in North-West London on the River Brent, below Wealdstone Brook confluence and the Brent Reservoir.	Critical depth flume (rectangular) in a concrete channel, d/s of Brent Reservoir (informally called the Welsh Harp Reservoir).	One rating applied across period of record. The weir is insensitive at low flows. There are discrepancies between the rating and low flow gaugings. However at stages higher than 0.25m the rating is much more reliable.	Peak flow data before water-year 1978/1979 has not been re-calculated using rating New1 as there is no stage data available. These events are calculated through the old rating. New rating gave minimal change to flow magnitude across the flow range so flows pre-1978 are still usable. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A largely urban/suburban catchment in North-West London.	Responsive regime with very artificial low flow pattern (Welsh Harp reservoir is u/s).
39094	Crane at Marsh Farm	81.0	TQ1545573487	515455.0	173487.0	51°26'54.9938"N 0°20'23.7980"W	51.44861	-0.33994	Crane	Marsh Farm	7.4	EA-HNL	3680TH	39	1979-01-01		FL		28.0	174.0	true	false	false	false	false	false	false	true	false	false	false	false	false	G	1977-12-06	2023-09-30	0.505	0.0	2000-08-01	2017-09-16	11.8	1993-10-13	1993-10-13	0.013	0.11	0.258	1.27	1.93	0.33	16735	16735	100.0				8.5	21.8	32.8	52.5	116.2	639	627	0.0451	0.0585	0.2333	0.0011	0.6522	0.019	0.0163	0.2482	0.0001	0.7137				1.0	0.5243		0.0115	0.29	0.423	0.989	11.4	40.47	32.7	41.2	11.4	32.83	16.9	35	177	0.27	8.6	96.7	1.474	0.875	0.2852	0.316	0.85	1.041	0.4919	0.919	0.994			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located in the lower catchment of the River Crane, just above the confluence with the River Thames in London.	Rectangular critical depth flume (insensitive) in a straight concrete channel. Capacity approx. 30 cumecs; yet to be exceeded.	Theoretical rating; modular limit to be determined.		Very flat catchment. The drainage network is difficult to delineate. Mainly urban; catchment contains Heathrow Airport and several pumped storage reservoirs (abstracting from Thames).	Substantial artificial influence on flow pattern - evident at low flows: sewage effluent, automatic weir u/s diverts flow into the Duke's River (may result in negligible flows), considerable area of gravel workings. Some natural runoff gain from the River Colne catchment (but unlikely to compensate for the u/s diversion).
39095	Quaggy at Manor House Gardens	33.5	TQ3948574878	539485.0	174878.0	51°27'20.5398"N 0°00'22.3120"E	51.45571	0.0062	Quaggy	Manor House Gardens	13.3	EA-KSL	4389TH	39	1961-01-01	2017-08-01	FL		8.0	40.8	true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1978-07-03	2017-07-25	0.141	0.012	1999-09-13	1999-09-13	3.458	2002-12-30	2002-12-30	0.031	0.056	0.081	0.296	0.465	0.45	14268	14268	100.0				13.8	29.0	60.4	95.4	133.9	649	644	0.1531	0.0135	0.163	0.0008	0.6695	0.129	0.0103	0.1848	0.0003	0.6757				1.0	0.0481			0.27	0.61	0.997	36.7	28.88	32.9	41.5	11.2	18.06	7.29	61	295	0.24	13.8	33.42	0.531	0.737	0.0831	0.3681	0.865	0.881	0.4771	0.905	0.908			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A critical depth flume. Very responsive regime.	A critical depth flume (width: 4m, wing wall height: 2m) in a concrete channel. Removed from peak flows dataset in February 2018 (WINFAP Files v6). Station closed.	The flume was constructed in 1961 and calibrated theoretically - the low flow rating has since been revised on the basis of c/m gauging results; more gauging required to confirm the high flow rating). Modular range uncertain. One peak flow rating applied across period of record. Current rating derived by hydraulic modelling. Good fit to gaugings although none at high flows. More current meter readings needed from 0.4m to bankfull at 2m.	The structure was overwhelmed by the 1968 flood but sensibly full range otherwise. The September 1968 flood estimated at about 15 cumecs - bypassed the station, and exceeded the range of the recorder. Until June 1978, flows read from chart (rather than stage) - stages derived from rating applied, or GLC data where available.	The catchment is a mixture of urban and suburban development.	Very responsive regime.
39096	Wealdstone Brook at Wembley	21.8	TQ1935986216	519359.0	186216.0	51°33'43.9256"N 0°16'46.1526"W	51.5622	-0.27949	Wealdstone Brook	Wembley	29.1	EA-HNL	3839TH	39	1976-01-01		FV			39.6	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1979-01-03	2023-09-30	0.132	0.0	1982-03-28	1982-04-04	5.81	1992-09-22	1992-09-22	0.016	0.026	0.042	0.319	0.562	0.23	16342	16254	99.462	1976-09-01		12.98	31.2	40.4	51.7	71.1	129.8	678	664	0.058	0.0154	0.1449		0.7799	0.0275	0.0022	0.1429		0.8274				1.0	0.0002			0.29	0.175	0.997	25.9	50.61	31.9	40.6	10.7	9.76	4.92	54	138	0.26	31.3	23.74	0.729	0.916	0.1329	0.4268	0.906	0.978	0.5115	0.946	0.991	1976		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	North-West London station located in the urbanised middle reaches of the River Brent.	Flat V profile weir in a culvert (below Olympic Way Wembley). Following modifications to the structure in 1978, it was refurbished but the crest is sub-standard.	Not originally designed as a measurement structure but as a method of hydraulically reducing the head to allow free conveyance under the culverts supporting beams. The station was reviewed in 2010. A discharge point, that entered the channel immediately d/s of the weir, compromised gaugings. Approach conditions not ideal in high flow. One rating applied across period of record. The structure is non-standard and a few gaugings suggest that the theoretical rating may not be applicable especially in peak flow range.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A largely impervious urban/suburban catchment in West London.	Responsive regime.
39097	Thames at Buscot	997.0	SU230981	423000.0	198100.0	51°40'52.3065"N 1°40'07.4492"W	51.6812	-1.66874	Thames	Buscot	70.3	EA-T		39	1979-01-01	1998	MIS				true	false	false	false	false	false	false	false	false	false	true	false	false	GE	1980-03-01	1998-12-31	9.149	0.692	1995-08-21	1995-08-21	73.2	1990-02-04	1990-02-04	1.24	3.33	5.88	21.4	27.7	0.71	6880	6726	97.762				69.6	82.0	115.2	210.0	330.2	769	747	0.1072	0.4263	0.3712		0.076	0.0671	0.4837	0.3641	0.0064	0.066	0.5505	0.0698	0.3477	0.0321	0.081		0.0616	0.31	0.664	0.94	36.7	25.49	32.5	40.9	10.0	60.28	30.68	132	131	0.17	69.6	997.22	2.141	0.795	0.1965	0.0286	0.691	0.946	0.0325	0.835	0.964			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located on the main River Thames channel in the upper catchment that was closed in 1998.	Complex weir - radial gates and overfall weirs - embracing two channels. Two u/s and two d/s head recorders.	All but highest flows contained. Calibrated using c/m measurements.		Mixed geology; runoff from the Cotswolds (Oolitic L'st) provides a significant baseflow but the Oxford Clay valley is much more responsive. Land use: rural/agricultural with settlements concentrated in the valley where gravel extraction is significant.	Small net export of water (due to gw abstraction).
39098	Pinn at Uxbridge	33.3	TQ062826	506200.0	182600.0	51°31'56.3844"N 0°28'13.2072"W	51.53233	-0.47034	Pinn	Uxbridge	30.5	EA-HNL		39	1985-01-01	2004-01-01	EM				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1984-10-19	2003-12-31	0.2	0.002	1993-08-08	1993-08-08	8.23	1988-05-08	1988-05-08	0.01	0.026	0.054	0.51	0.905	0.21	7013	6749	96.236				30.2	40.2	58.5	87.5	142.9	690	665	0.1855	0.0359	0.2748	0.0003	0.4989	0.1672	0.009	0.2749	0.0002	0.5443				1.0	0.0796			0.29	0.175	0.94	36.1	49.77	31.6	39.9	11.0	18.47	10.42	62	175	0.27	30.2	35.28	0.792	0.858	0.0952	0.2098	0.774	1.029	0.3045	0.893	0.992			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	West London flood warning level-only gauging station located on the River Pinn at Uxbridge.	Initially an EM (overhead coil) in a formalised trapezoidal section. EM coil removed in 2004 - now a level-only flood warning site.	Full-range capability but limited number of higher flow gaugings suggest substantial overestimation in this range.	Multiple 0.01 cumecs entries are an instrumental artifact.	An impermeable (largely London Clay) surburban catchment west of London. Headwaters rise in the countryside but substantial urban development throughout the catchment - including Pinner, Ruislip and Ickenham.	Very flashy regime. Very limited impact of artificial influences on the flow pattern, particularly given its suburban character.
39099	Ampney Brook at Ampney St Peter	45.3	SP0770501331	407705.0	201331.0	51°42'38.3820"N 1°53'23.5876"W	51.71066	-1.88989	Ampney Brook	Ampney St Peter	95.3	EA-T	0470TH	39	1983-01-01		FV			40.0	true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1983-05-01	2023-09-30	0.609	0.0	1984-09-02	2022-10-20	9.64	2012-12-24	2012-12-24	0.017	0.181	0.441	1.4	1.86	0.76	14763	14763	100.0				91.7	117.6	156.0	205.5	250.9	836	809	0.1061	0.5217	0.3377		0.0293	0.045	0.5833	0.3581	0.0043	0.0092	1.0							0.33	0.812	0.964	38.4	15.89	33.5	43.1	10.3	18.7	8.99	158	150	0.44	91.7	39.22	0.31	0.806	0.0471	0.0056	0.276	0.405	0.0035					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located within the upper Thames catchment in the headwaters of Ampney Brook.	Flat V weir, 1:10 cross-slope.	Theoretical calibration confirmed by gaugings. Drowning unlikely (but d/s stilling well installed). Full range.	Realistic late-2000 flow pattern (rare amongst Cotswold stations).	The Ampney Brook is a dip-slope stream draining the pervious Great Oolite of the Cotswolds. A rural catchment with small, scattered settlements. The contributing area is greater than the topographical catchment.	Primarily natural baseflow-dominated regime but gw abstraction lower down the Churn catchment is likely to have an impact. Station is located just d/s of a fish farm (now closed).
39100	Swill Brook at Oaksey	53.3	ST9966792686	399667.0	192686.0	51°37'58.7421"N 2°00'22.3494"W	51.63298	-2.00621	Swill Brook	Oaksey	87.5	EA-T	0155TH	39	1982-01-01	2016-01-01	FVUS				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1984-02-28	2015-07-31	0.308	0.0	1984-06-28	2015-07-31	8.67	2005-12-03	2005-12-03	0.0	0.016	0.067	0.973	1.52	0.36	11477	6084	53.01				88.5	90.4	108.5	129.3	145.5	812	778	0.0862	0.4799	0.4046		0.0273	0.0427	0.5715	0.3697	0.0021	0.0139	0.7758		0.2242				0.0707	0.34	0.578	0.995	17.0	31.18	32.5	41.1	10.1	12.18	6.7	109	129	0.31	89.3	42.21	2.502	0.695	0.2523	0.0054	0.448	0.848	0.0035					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located on Swill Brook, in the headwaters of the River Thames.	Flat V weir installed in 2002 (with US installed more recently to improve measurement when FV drowned). Superseded unreliable EM. Not a primary gauging station.	Some bypassing at high flows over 2.2 cumecs.	Early flow record is patchy. Large range of velocities. Zero flow during most summers and monitoring of the lowest flow rates is suspect.	Relatively flat, rural catchment given over to agriculture. Primarily impervious (Oxford Clay).	Essentially natural, responsive, flow regime but runoff may be influenced by gw pumping from the confined Oolite aquifer.
39101	Aldbourne at Ramsbury	53.1	SU2890171719	428901.0	171719.0	51°26'37.4271"N 1°35'07.9758"W	51.44373	-1.58555	Aldbourne	Ramsbury	106.4	EA-T	2229TH	39	1982-01-01	2015-09-30	FV			40.5	true	false	false	false	false	false	true	false	false	true	false	false	true	N	1982-03-01	2015-09-30	0.238	0.006	2011-12-05	2011-12-10	2.141	2014-02-14	2014-02-14	0.023	0.055	0.093	0.66	0.95	0.96	12267	12267	100.0				108.2	144.6	187.6	234.5	276.8	785	776	0.1071	0.4731	0.3392		0.0264	0.0372	0.6441	0.2975	0.0022	0.0189	1.0					0.1605	0.0001	0.32	0.955	1.0	88.5	6.07	33.1	42.1	10.3	15.56	8.12	188	116	0.23	108.2	53.09	0.16	0.95	0.0254	0.0099	0.548	0.886	0.0056	0.655	0.767			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located on the Aldbourne River, a tributary of the River Kennet, on the site of an old matchstick plantation. Site declared unsafe due to over mature trees rooted in shallow soil blowing over. Station closed in 2015 and decommissioned in 2017-18, removing barriers to fish movement along an important tributary of the Kennet SSSi.	Two Flat V weirs - 1:10 cross-slopes (one is located on a bypass stream).	Theoretical calibration. All flows contained.	Flows 3/8/2000-28/10/2000 modelled by EA. Stilling well froze in Nov/Dec 2010; late-winter and spring flows under review. Some flows in Nov and Dec 2011 were estimated due to equipment failure.	The Aldbourne drains a Chalk downland catchment (very modest Drift cover). Land use: predominantly agricultural - Aldbourne is the only significant settlement.	Sensibly natural baseflow-dominated flow regime.
39102	Misbourne at Denham Lodge	94.8	TQ0476486658	504764.0	186658.0	51°34'08.6569"N 0°29'23.3619"W	51.56907	-0.48982	Misbourne	Denham Lodge	35.0	EA-HNL	2879TH	39	1985-01-01		C			17.4	true	false	false	false	false	false	false	true	false	false	false	false	false	GE	1984-07-01	2023-09-30	0.259	0.021	1997-09-21	2006-08-10	2.33	2001-02-12	2001-02-12	0.067	0.155	0.211	0.465	0.618	0.9	14336	14269	99.533				34.1	79.2	147.4	198.6	252.4	765	750	0.2126	0.3369	0.2802		0.1648	0.1881	0.3285	0.3441	0.0024	0.1361	0.9677			0.0323	0.1752	0.3515	0.0695	0.29	0.718	0.935	60.5	25.64	35.6	43.6	11.5	34.87	20.38	142	122	0.2	34.1	93.23	0.31	0.814	0.0476	0.0411	0.585	0.72	0.0727	0.845	0.696			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located on the lower River Misbourne, close to the confluence of the River Colne.	Crump weir (crest: 3.5m wide) plus Flat V (width: 2.0m, 1:10 cross-slope) on small distributary.	High flow range under review but drowning rare. Bypassed only in exceptional floods.		Elongated dip-slope catchment in the Chilterns (Chalk with appreciable Drift cover). Significant urban growth in valley but catchment is largely Green Belt - agriculture with scattered tracts of woodland. Topographical CA confirmed as 94.8 sq.km (Gw catchment estimated at 81 sq.km.).	Baseflow dominated Chalk stream, influent in some reaches (e.g. near the Chalfonts). Runoff substantially diminished by PWS abstractions; partially counteracted by alleviation of low flow scheme from 1992.
39103	Kennet at Newbury	548.1	SU4716467172	447164.0	167172.0	51°24'05.8505"N 1°19'24.2105"W	51.40163	-1.32339	Kennet	Newbury	70.0	EA-T	2250TH	39	1989-01-01	2016-08-09	IV				true	false	false	false	false	false	false	false	false	false	true	false	false	G	1989-04-01	2023-09-30	5.269	1.283	2022-08-14	2022-08-14	27.18	2014-02-15	2014-02-15	1.91	2.92	4.0	10.4	13.2	0.93	12601	11222	89.056				73.3	116.4	165.8	212.9	293.7	790	772	0.1444	0.4931	0.2946	0.0006	0.0337	0.1018	0.5862	0.2875	0.0027	0.0209	0.8896	0.0289		0.0814	0.0862	0.2036	0.0265	0.31	0.848	0.969	56.7	13.62	32.6	41.9	10.3	65.34	33.6	166	102	0.12	73.3	543.72	0.513	0.924	0.0697	0.0122	0.584	0.856	0.0104	0.744	0.684			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Cross-correlation gauge located in Newbury, in the middle reaches of the River Kennet.	From December 2019 onwards, a cross-correlation gauge. From November 2016 onwards a side-looking ADCP gauge. Pre-November 2016, an ultrasonic with six pairs of transducers in cross-path configuration.	Full range, but relatively high velocities.	No data held for period of side looker installation (November 2016 - December 2019).	Principally a Chalk catchment but small tracts of low permeability above the station. Mainly rural (arable and mixed farming) with some urban growth concentrated along the valley.	Sensibly natural baseflow dominated flow regime but possible small impact of WBGS during drought conditions.
39104	Mole at Esher	469.6	TQ1305866063	513058.0	166063.0	51°22'56.5169"N 0°22'36.4361"W	51.38237	-0.37679	Mole	Esher	10.0	EA-KSL	3290TH	39	1984-01-01		US				true	true	true	true	false	false	false	true	false	false	true	false	false		1984-12-18	2023-09-30	5.573	0.396	1998-08-21	1998-08-21	90.1	2000-11-07	2000-11-07	1.339	2.15	3.04	12.6	19.5	0.51	14166	12657	89.348	1998-12-23		53.76	9.3	40.6	73.8	133.1	264.5	768	760	0.2635	0.1798	0.3152	0.0007	0.2297	0.2323	0.168	0.3962	0.0019	0.1967	0.2385	0.132	0.4283	0.2012	0.1008	0.0417	0.0259	0.35	0.518	0.948	46.5	35.07	34.5	45.4	11.4	78.24	51.58	82	353	0.14	9.6	471.36	1.309	0.976	0.1462	0.0564	0.661	0.962	0.1128	0.86	0.963	1998..2009		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauging station situation on Mole Flood Aleviation Scheme. Gates upstream and downstream of the section.	New ultrasonic, full range capability and improved reliability. Replaced earlier US just u/s (in a reach created as part of the Mole Flood alleviation Scheme); debris and siltation (blocking transducers) and high temperature gradients caused substantial malfunction particularly at low flows. New gauge is prone to weed in channel, which can cause issues at low flows. Station added to peak flows dataset in September 2022 (WINFAP Files v11).	Flow and levels are affected by downstream Island Barn Weir and upstream Viaduct Sluice. Both are operated as part of the Lower Mole Flood Aleviation Scheme in high flows.	Several drop outs in record including December 2016 due to level being dropped downstream to perform channel maintenance work. WY1998/1999 rejected because it is a partial first year of the record, and WY2009/2010 rejected as AMAX likely occured during period of fault with the gauge - GDF infilled.	A largely impervious catchment divided by the W-E trending ridge of the North Downs (Chalk and Upper Greensand). Diverse land use - rural tracts and considerable suburban development.	Responsive regime. Some sewage effluent derives from outside the catchment.
39105	Thame at Wheatley	533.8	SP61190503	461190.0	205030.0	51°44'26.3138"N 1°06'54.7390"W	51.74064	-1.11521	Thame	Wheatley	50.0	EA-T	1980TH	39	1989-01-01		US				true	false	false	false	false	false	false	true	false	false	true	false	false	GE	1989-05-18	2023-09-30	3.675	0.31	2022-08-13	2022-08-13	68.1	2003-01-03	2003-01-03	0.7	1.15	1.75	9.41	13.6	0.56	12554	12500	99.57				54.9	68.8	88.0	139.1	268.3	662	644	0.0974	0.3621	0.4542	0.0	0.0832	0.0556	0.398	0.4755	0.0024	0.0656	0.1537	0.2403	0.3324	0.2736	0.0228	0.0023	0.06	0.31	0.486	0.984	34.0	38.09	31.4	38.9	10.1	62.43	31.75	98	304	0.1	54.9	531.53	1.25	0.915	0.1677	0.0211	0.628	1.132	0.0361	0.822	1.166			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Located on the River Thame at Wheatley the ultrasonic gauging station superseded the upstream station at Shabbington (39038).	Multi-path US (cross- configuration).	Full range, railway embankment ensures no bypassing. Skewed flow, weed-growth and summer temperature gradients can limit accuracy particularly at low flows (e.g. early autumn 2009).	Approximately 80 cumecs gauged in 01/2003. Flows in August 2017 affected by weed growth. Missing data in December 2019 due to station upgrade works.	The Thame drains a typical clay (principally Oxford Clay, some Greensand also) vale NW of the Chiltern escarpment. Land use is largely agricultural (considerable grassland) while the urban areas within the catchment include the town is Aylesbury.	Some spring flow contribution but responsive regime. Net import of water; sewage effluent is a significant component of low flows.
39106	Mole at Leatherhead	371.4	TQ16115641	516110.0	156410.0	51°17'41.9641"N 0°20'09.9447"W	51.29499	-0.3361	Mole	Leatherhead	27.8	EA-KSL	3280TH	39	1986-01-01		EM				true	false	false	false	false	false	false	true	false	false	false	false	false	GE	1986-11-12	2023-09-30	4.007	0.565	2007-09-15	2007-09-15	90.0	2013-12-24	2013-12-24	0.954	1.59	2.31	9.18	13.3	0.55	13472	12934	96.007				29.5	55.4	79.9	139.1	264.5	791	783	0.2566	0.1918	0.3346	0.0006	0.2045	0.2312	0.1793	0.415	0.0019	0.1685	0.2609	0.1639	0.532	0.0432	0.0672	0.0518	0.0195	0.36	0.508	0.96	49.8	36.1	34.8	46.1	11.5	49.96	30.92	89	337	0.12	29.9	379.52	1.106	1.051	0.1397	0.051	0.684	1.078	0.1011	0.855	1.081			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station gauging a mixed land use catchment.	Currently ultrasonic, replacing an electromagnetic gauge in 2009.		Gap and some flow truncation in the time series between 1996 and 2009.	A predominantly impervious (Weald Clay) catchment which drains through the Box Hill gap in the North Downs (Chalk and Upper Greensand). Diverse land use.	Some sewage effluent derives from outside the catchment; Gw abstraction from the Chalk headwaters also.
39107	Hogsmill at Ewell	33.66	TQ21596330	521590.0	163300.0	51°21'20.7780"N 0°15'18.6816"W	51.35577	-0.25519	Hogsmill	Ewell	28.6	EA-KSL	3350TH	39	1988-01-01	2010-12-31	FLVA				true	false	false	false	false	false	false	false	false	false	false	false	false		1988-12-08	2010-12-31	0.048	0.001	1990-11-06	2005-11-28	0.247	2001-05-17	2001-05-17	0.002	0.012	0.035	0.11	0.131	0.93	8059	6781	84.142				27.1	42.7	100.6	162.0	175.2	705	697	0.1074	0.0332	0.2321		0.6211	0.0478	0.0002	0.2989		0.6531	0.7543			0.2457		0.0001		0.31	0.876	0.968	39.5	10.0	32.2	42.9	10.6	7.59	4.23	101	320	0.65	27.1	8.44	0.23	0.524	0.0425	0.1961	0.633	0.981	0.367	0.879	1.002			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular flume; stage-discharge relation confirmed by c/m gaugings.	Rectangular flume; Modular. Overfall u/s. Frequently vandalised. Station downgraded in 2010 to level only.	Grounding of float (stilling well floor corresponds to throat level of flume) can affect low flow accuracy. Debris on u/s grill can influence levels.	Patchy flow record.	A largely suburban catchment developed mostly on Chalk (dip-slope of North Downs). Mean runoff suggests that topographical catchment greatly exceeds the contributing area.
39108	Churn at Perrott's Brook	59.0	SP02150571	402150.0	205710.0	51°45'00.2929"N 1°58'12.9260"W	51.75008	-1.97026	Churn	Perrott's Brook	120.1	EA-T	0250TH	39	1990-01-01		FV				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1990-12-01	2023-09-30	0.701	0.0	1995-08-23	2003-10-27	4.371	2014-02-18	2014-02-18	0.059	0.208	0.461	1.67	2.2	0.88	11992	11820	98.566				123.8	167.8	220.8	271.1	295.1	878	855	0.2351	0.3264	0.3937		0.0351	0.1967	0.3487	0.4436	0.0053	0.0053	0.9029		0.0971				0.0088	0.33	0.857	0.932	99.2	12.51	35.2	46.6	10.6	19.11	11.16	219	161	0.14	123.8	58.3	0.173	0.691	0.0181	0.004			0.0046					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir located in the upper River Churn, at the western edge of the Thames catchment.	Flat V weir, 6 metres wide, 1:10 cross-slope.	Full range - tailwater levels measured to facilitate flow computation in the non-modular range (but further gaugings are required to check the reduction factor).	Zero flow in severe drought conditions. Extreme flow in July 2007. Data missing for Nov/Dec 2000 (when previous maximum would have been exceeded).	Permeable (Oolitic L'st) catchment on the dip-slope of the Cotswolds. Land use: mostly agricultural, some woodland and scattered settlements.	Baseflow dominant regime.
39109	Coln at Fossebridge	82.0	SP0801511237	408015.0	211237.0	51°47'59.0019"N 1°53'06.6253"W	51.79972	-1.88517	Coln	Fossebridge	116.7	EA-T	0630TH	39	1990-01-01		C				true	false	false	false	false	false	false	false	false	false	false	false	false	G	1990-10-01	2023-09-30	0.579	0.0	2003-08-20	2003-10-18	4.724	2014-02-15	2014-02-15	0.042	0.148	0.324	1.46	1.91	0.9	12053	12019	99.718				116.3	161.0	211.5	267.5	330.2	816	832	0.1823	0.3743	0.4081		0.0305	0.138	0.4202	0.4299	0.0046	0.0069	0.8288		0.1712					0.33	0.867	0.972	84.5	11.39	36.0	45.9	10.7	26.79	15.3	212	142	0.12	116.3	77.72	0.239	0.842	0.0247	0.0096	0.436	1.116	0.0061	0.504	1.031			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station, located in the upper River Coln, situated above structures at Bibury (39020) and Fairford (39110).	Crump-profile crest, 7.8m wide (constructed on original overfall).	Modular until high flows but submerged in floods as flow is restricted by a d/s culvert and construction under a d/s bridge. Some bypassing also occurs. Intermittent flow in small bypass channel not measured.		A rural, dip-slope, catchment developed on the Oolitic L'st of the Cotswolds.	Baseflow-dominated regime.
39110	Coln at Fairford	130.0	SP1502301207	415023.0	201207.0	51°42'33.8401"N 1°47'02.3212"W	51.7094	-1.78398	Coln	Fairford	83.7	EA-T	0680TH	39	1990-01-01		US				true	false	false	false	false	false	false	false	false	false	true	false	false	E	1991-03-01	2023-09-30	2.19	0.368	2022-10-26	2022-10-26	10.76	2014-02-17	2014-02-17	0.656	1.144	1.75	4.24	5.26	0.93	11902	11742	98.656				83.5	126.0	180.7	255.1	330.2	814	808	0.1547	0.424	0.3869		0.0296	0.1054	0.4816	0.4003	0.0042	0.0081	0.8961		0.1039					0.33	0.847	0.973	70.9	13.02	34.9	44.3	10.5	45.13	25.91	186	147	0.2	83.5	128.12	0.322	0.749	0.0384	0.0101	0.413	0.98	0.0063	0.502	0.96			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located on the lower River Coln.	Opened as an electromagnetic gauging station (buried coil). Ultrasonic since 2011.	C/m calibration to be completed. Station performance generally good to bankfull (flows unreliable during exceptional floods (e.g. during extreme July 2007 event). Reasonable velocities are maintained at low flows (0.5 cumecs is a typical drought minimum) - but flows may be overestimated by around 10%.		Linear catchment on the dip-slope of the Cotswolds (Oolitic Limestone). Rural with scattered settlements.	Baseflow-dominated regime. Levels affected by STW.
39111	Thames at Staines	8120.0	TQ0349771328	503497.0	171328.0	51°25'53.4453"N 0°30'45.3208"W	51.43151	-0.51259	Thames	Staines	10.0	EA-T	2900TH	39	1990-01-01		US				true	false	false	false	false	false	false	false	false	false	true	false	false	PGI	1990-10-09	2023-08-15	56.409	4.5	1990-10-16	1990-10-16	404.0	2014-02-11	2014-02-11	10.5	18.1	33.6	138.0	190.0	0.67	11999	11317	94.316				13.0	58.9	105.0	185.1	330.2	715	696	0.1357	0.3927	0.3316	0.0018	0.1217	0.1081	0.4391	0.3402	0.0064	0.0978	0.4404	0.106	0.2322	0.2214	0.142	0.0787	0.0796	0.3	0.654	0.946	41.0	26.87	32.3	40.7	10.6	243.76	131.52	114	119	0.11	13.0	8186.54	1.424	0.996	0.1473	0.0386	0.68	0.753	0.0563	0.841	0.697			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauging station located on the main channel of the River Thames, within the lower reaches of the catchment.	US multi-path (6) in cross configuration. Transducers are located in piles set in the channel.	Excellent agreement between multi-meter check gaugings and US calibration. Levels affected by gate and lock movements. In hot weather temperature gradients can deflect beams.	Gap in data August 2018 - June 2019 due to site works.	Scarp and vale topography. Diverse geology. Predominantly rural headwaters contrast with substantial urban and suburban development in the lower reaches.	Major PWS abstractions u/s very evident at low flows.
39112	Letcombe Brook at Arabellas Lake	3.1	SU37278515	437270.0	185150.0	51°33'50.4055"N 1°27'49.3986"W	51.564	-1.46372	Letcombe Brook	Arabellas Lake	112.7	EA-T	1751TH	39	1992-01-02		FV				true	false	false	false	false	false	false	false	false	false	false	false	false	G	1992-02-01	2023-08-23	0.035	0.0	1992-02-01	2022-12-19	0.253	2014-02-11	2014-02-11	0.0	0.011	0.019	0.094	0.121	0.93	11527	11254	97.632				107.0	128.9	173.5	225.8	236.6	747	733	0.109	0.2954	0.4756		0.0191	0.0109	0.4945	0.4855		0.007	1.0							0.32	0.968	1.0	129.0	4.96	34.0	42.1	10.1	3.75	1.79	176	40	0.4	108.9	3.1	0.073	0.522	0.0145	0.0165	0.614	0.228	0.0036					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located in the headwaters of Letcombe Brook, a tributary of the River Ock.	Flat V weir at outfall of the lake.		Zero flow during notable droughts.	Catchment area derived from the Digital Terrain Model. The Letcombe Brook is fed from springs issuing from the scarp slope of the Lambourn Downs (Chalk, Drift free); contributing area is very rural.	Baseflow-dominated regime of the Letcombe Brook is heavily influenced by gw abstraction; flow augmentation scheme in operation.
39113	Manor Farm Brook at Letcombe Regis	1.4	SU3827085996	438270.0	185996.0	51°34'17.5479"N 1°26'57.1353"W	51.57154	-1.4492	Manor Farm Brook	Letcombe Regis	109.5	EA-T	1771TH	39	1992-01-01	2023-09-13	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1992-02-01	2023-09-12	0.011	0.0	1993-08-31	2023-09-12	0.079	2001-01-04	2001-01-04	0.0	0.002	0.006	0.031	0.044	0.81	11547	10840	93.877				109.2	119.1	142.6	214.2	224.2	741	724	0.0672	0.0746	0.8216			0.044	0.3362	0.6138		0.006	0.9366			0.0634				0.32	0.97	1.0	80.5	4.72	34.7	42.6	10.1	2.02	1.04	158	342	0.71	109.6	1.33	0.128	0.216	0.0207	0.0028			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located in a headwater tributary of Letcombe Brook.	Flat V weir.		Interludes of zero flow in most years.	The Manor Farm Brook is fed by spring flow issuing from the scarp slope of the Lambourn Downs (Chalk). A very rural catchment.	Spring outflow. Flow augmented to counteract impact of gw abstractions (external to the topographical catchment).
39114	Pang at Frilsham	89.8	SU5376273025	453762.0	173025.0	51°27'13.1846"N 1°13'39.5971"W	51.45366	-1.22767	Pang	Frilsham	74.0	EA-T	2140TH	39	1992-01-01		FV				true	false	false	false	false	false	false	false	false	false	false	false	false	G	1991-10-01	2023-09-30	0.217	0.0	1991-10-01	2012-05-09	2.08	2001-02-21	2001-02-22	0.0	0.064	0.13	0.518	0.783	0.95	11688	11322	96.869				73.6	106.6	140.0	187.1	238.0	704	703	0.0723	0.5737	0.2764	0.009	0.0202	0.0604	0.6796	0.2384	0.0075	0.0141	0.9743			0.0257	0.0846	0.1514		0.32	0.873	1.0	55.5	12.91	33.2	41.4	10.6	24.35	12.5	143	130	0.16	73.5	90.06	0.275	0.847	0.0447	0.003			0.0049	0.103	0.113			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located in the ephemeral stretch of the River Pang.	Flat V weir.	Floods exceed bankfull and weed growth causes occasional drowning (flows adjusted but high submergence ratios limit accuracy). Monitors progress of ALF programme (headwater abstractions - currently much diminished - having substantially reduced runoff in the past).		A largely permeable (Chalk with modest Drift cover) rural catchment; mostly arable and pasture with significant woodland on the Tertiary outcrops (in the south).	Baseflow dominated regime; effluent can form a significant component of low flows.
39115	Pang at Bucklebury	109.0	SU5559571045	455595.0	171045.0	51°26'08.4631"N 1°12'05.7566"W	51.43568	-1.2016	Pang	Bucklebury	64.3	EA-T	2150TH	39	1991-05-01		FV				true	false	false	false	false	false	false	false	false	false	false	false	false		1991-10-16	2023-09-30	0.222	0.0	1992-03-17	2022-12-16	2.414	2014-02-28	2014-02-28	0.001	0.054	0.135	0.527	0.73	0.88	11673	10756	92.144				62.6	95.8	132.2	183.5	238.0	703	702	0.124	0.5126	0.2765	0.0074	0.0327	0.1169	0.6076	0.2504	0.0069	0.0181	0.8293			0.1707	0.1035	0.1252		0.32	0.809	1.0	55.5	16.23	32.8	41.1	10.7	28.22	14.26	136	116	0.17	62.7	108.94	0.298	0.859	0.0464	0.0037			0.0078	0.676	0.637			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located in the mid reaches of the River Pang.	Flat V weir.	All flows contained but weed growth causes drowning. Monitors progress of ALF programme (headwater abstractions substantially reduced runoff but abstractions have been greatly reduced since 1992).	Flows adjusted (due to weed growth) but high submergence ratios limit accuracy (e.g. May/June 1995 when flows unreliable).	A very rural and largely permeable (Chalk with modest Drift cover)) catchment with significant areas of woodland on the Tertiary outcrops.	Flows affected by STW effluent and, rarely, by West Berkshire Groundwater Scheme.
39116	Sulham Brook at Sulham	3.0	SU6421074075	464210.0	174075.0	51°27'43.2571"N 1°04'37.6706"W	51.46202	-1.07713	Sulham Brook	Sulham	42.7	EA-T	2195TH	39	1991-01-01	2012-12-31	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	E	1991-10-01	2012-12-31	0.07	0.0	2006-08-07	2006-08-12	3.89	2000-10-30	2000-10-30	0.003	0.018	0.033	0.154	0.234	0.61	7763	7731	99.588				42.9	44.8	48.6	100.6	104.9	685	657	0.2542	0.3733	0.3213		0.0512	0.2414	0.4189	0.3189	0.0002	0.0206	0.5482			0.4518	0.6293			0.29	0.408	1.0	46.0	38.16	30.2	39.4	11.3	3.09	1.51	60	282	0.47	43.0	3.03	1.521	0.817	0.2409	0.0017			0.0017					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located on Sulham Brook, a small tributary of the main River Thames.	Flat V weir. U/s and d/s levels monitored.	Modest d/s gradient and limited channel capacity/siltation cause the structure to drown for substantial periods. Silt build-up regularly caused by cows wading upstream of the weir. Both factors affect flow calculation.		A very rural catchment developed mostly on Chalk (with substantial Drift cover); some woodland on the Tertiary outcrops.	Relatively responsive regime. Topographical catchment is substantially less than the true contributing area; runoff (which is reduced by gw abstraction) is therefore unrepresentative - in wet years runoff can greatly exceed rainfall. Levels/flows affected by STW until the mid-1990s (when effluent diverted).
39117	Colne Brook at Hythe End	929.5	TQ0189972265	501899.0	172265.0	51°26'24.8072"N 0°32'07.0758"W	51.44022	-0.5353	Colne Brook	Hythe End	12.3	EA-HNL	2894TH	39	1991-01-01		EM				true	false	false	false	false	false	false	true	false	false	false	false	false	E	1991-07-01	2023-09-30	2.075	0.242	2006-07-26	2006-07-26	11.9	2014-02-07	2014-02-08	0.573	1.14	1.648	4.09	4.98	0.85	11780	11666	99.032				14.0	27.6	92.0	164.4	203.6	721	705	0.241	0.1781	0.3308	0.0	0.2173	0.2301	0.1854	0.3675	0.0134	0.1726	0.7124			0.2876	0.613	0.1668	0.098	0.29	0.598	0.817	36.3	30.63	34.6	43.9	11.7	48.86	27.42	93	140	0.25	14.0	94.43	1.047	0.673	0.1231	0.0529	0.625	1.04	0.0917	0.821	1.031			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located on a distributory of the River Colne.	Electromagnetic gauging station (buried coil).			Mixed land use catchment.
39118	Wey at Alton	44.6	SU7166739431	471667.0	139431.0	51°08'58.7819"N 0°58'36.3301"W	51.14966	-0.97676	Wey	Alton	101.2	EA-T	3010TH	39	1991-01-01		FV				true	false	false	false	false	false	false	false	false	false	false	false	false	G	1991-07-01	2023-09-30	0.071	0.0	1991-08-19	2022-11-05	0.65	2014-02-14	2014-02-14	0.0	0.01	0.038	0.184	0.247	0.94	11780	11505	97.666				102.7	140.0	170.6	194.0	216.2	901	862	0.1679	0.5434	0.2296		0.0459	0.151	0.5098	0.3052	0.0009	0.0331	1.0					0.5066		0.35	0.947	0.984	56.1	6.8	35.3	47.3	10.9	16.08	7.93	169	26	0.09	102.9	44.49	0.177	1.19	0.0321	0.0061	0.537	0.211	0.0141	0.714	0.539			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located in the headwaters of the River Wey.	Flat V weir (1:10) cross-slope. U/s and d/s levels monitored.	Weir lowered in 2002; drowning now occurs more frequently.		Mostly Chalk (with significant Drift cover); Upper Greensand outcrops in the east. Alton is the only large settlement; land use is largely pasture/arable. Topographic catchment differs from groundwater contributing area.	Baseflow dominated regime. The upper Wey is ephemeral. Significant abstractions in the catchment.
39119	Wey at Kings Pond (Alton)	45.9	SU7235639526	472356.0	139526.0	51°09'01.5451"N 0°58'00.8054"W	51.15043	-0.96689	Wey	Kings Pond (Alton)	99.3	EA-T	3012TH	39	1991-01-01		TP				true	false	false	false	false	false	false	false	false	false	false	false	false	G	1991-11-01	2023-09-30	0.111	0.0	1991-12-02	2022-10-19	0.734	2014-02-12	2014-02-12	0.002	0.037	0.076	0.256	0.324	0.84	11657	11585	99.382				99.5	134.0	169.9	193.6	216.2	900	862	0.1639	0.5265	0.2259	0.0003	0.0707	0.1467	0.4936	0.2988	0.0009	0.0595	1.0				0.0102	0.4893		0.35	0.946	0.967	55.9	6.95	35.3	47.4	10.9	17.05	8.63	167	5	0.09	99.5	46.14	0.181	1.158	0.0324	0.0155	0.664	0.203	0.0298	0.813	0.356			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located in the headwaters of the River Wey, just downstream of the Wey at Alton (39118).	Rectangular thin-plate weir at outfall from lake.	Theoretical rating. Debris obstructing u/s grill can cause minor fluctuations in level.	Flow data for Apr-Jul 1995 unreliable due to weed growth. Zero flow during notable droughts.	Mostly Chalk (with significant Drift cover) and Upper Greensand. Rural (apart from Alton).	Baseflow-dominated regime but some local urban runoff. Topographic catchment differs from groundwater contributing area.
39120	Caker Stream at Alton	88.1	SU7287338390	472873.0	138390.0	51°08'24.5416"N 0°57'35.0265"W	51.14015	-0.95973	Caker Stream	Alton	99.6	EA-T	3015TH	39	1991-01-01		FV				true	false	false	false	false	false	false	false	false	false	false	false	false	E	1991-10-18	2023-09-30	0.087	0.0	1991-10-21	2022-10-20	1.616	2013-12-23	2013-12-23	0.0	0.003	0.016	0.258	0.44	0.43	11671	11671	100.0				100.0	123.4	172.9	209.4	245.6	952	920	0.1509	0.4816	0.3104	0.0004	0.0481	0.1401	0.4801	0.3485	0.0018	0.0293	0.9378	0.06		0.0022	0.0227	0.4634		0.35	0.927	0.999	52.4	8.33	38.0	50.7	10.6	22.37	11.22	169	9	0.07	100.0	83.95	0.343	0.833	0.0498	0.0044			0.0173	0.687	1.113			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Guaging station located in the headwaters of the River Wey system.	Flat V weir. U/s and d/s levels monitored.	Weed growth controlled by regular maintenance.		Mixed geology (largely Chalk with substantial Drift cover). A rural catchment. Contributing area substantially less than the topographical catchment: unrepresentative mean annual runoff.	Ephemeral stream but relatively responsive. Groundwater-dominated regime.
39121	Thames at Walton	9291.5	TQ0993167056	509931.0	167056.0	51°23'30.8569"N 0°25'17.0253"W	51.3919	-0.4214	Thames	Walton	8.9	EA-T	3100TH	39	1991-01-01		US				true	false	false	false	false	false	false	false	false	false	true	false	false		1991-08-10	2023-09-30	57.957	5.56	1997-07-16	1997-07-16	452.8	2014-02-10	2014-02-10	9.7	17.5	33.1	142.9	199.0	0.64	11740	11093	94.489				8.3	53.5	102.2	183.6	330.2	723	705	0.1564	0.3703	0.3233	0.0048	0.1294	0.1295	0.4106	0.3382	0.0105	0.1029	0.4465	0.0973	0.2129	0.2433	0.1383	0.077	0.0745	0.3	0.659	0.944	42.1	26.54	32.6	41.3	10.7	256.66	133.28	111	113	0.09	8.9	9291.86	1.404	0.994	0.1443	0.0388	0.673	0.768	0.0595	0.838	0.699			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauging station located on the main channel of the River Thames.	Multi-path, cross configuration US.	Gaugings confirm calibration. In hot weather the gauge can malfunction (due to temperature gradients in the measuring section).	No routine naturalisation - therefore d/s Kingston (39001) series is more hydrologically representative).	Scarp and vale topography developed on diverse geology. Predominately rural headwaters contrast with considerable suburban growth in the lower valley.
39122	Cranleigh Waters at Bramley	109.5	SU99974627	499970.0	146270.0	51°12'24.8421"N 0°34'13.1759"W	51.2069	-0.57033	Cranleigh Waters	Bramley	34.9	EA-T	3069TH	39	1990-01-01		US				true	false	false	false	false	false	false	true	false	false	false	false	false	E	1990-07-01	2023-09-30	1.133	0.0	1990-07-01	2015-09-30	39.9	2000-11-05	2000-11-05	0.196	0.301	0.452	2.7	4.56	0.39	12145	11963	98.501				34.0	49.0	69.3	120.8	260.3	795	787	0.2896	0.2177	0.3701	0.0021	0.108	0.2543	0.1918	0.479	0.0145	0.0564	0.3171		0.6829		0.0845		0.0012	0.36	0.473	0.943	54.6	38.13	34.8	46.2	11.8	29.56	14.5	78	252	0.1	34.0	109.98	0.799	1.076	0.1067	0.0164	0.49	0.812	0.0351	0.748	0.798			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located on Cranleigh Waters, a tributary that flows into the River Wey, south of the town of Guilford.	Multi-path cross-configuration ultrasonic gauging station beneath road bridge.	Enlarged bridge opening creates large capacity but, correspondingly, low velocities; these can impact on low flow precision. Full range station.	Notable Nov. 2000 peak under review.	Predominantly impervious Weald Clay with some Lower Greensand in lower reaches. A largely rural catchment (south of Guildford) centred on Cranleigh.	Flashy response with lengthy periods of very low flow. Low flows influenced by effluent returns. Station is used for flood monitoring purposes.
39123	Blackwater at Farnborough	35.5	SU8806855852	488068.0	155852.0	51°17'41.9872"N 0°44'17.8792"W	51.295	-0.7383	Blackwater	Farnborough	66.8	EA-T	2427TH	39	1996-10		IV				true	false	false	false	false	false	false	false	false	false	false	false	false	G	1996-10-01	2023-09-30	0.485	0.023	1998-07-25	1998-07-25	84.95	2022-05-19	2022-05-19	0.186	0.281	0.351	0.816	1.13	0.68	9861	9121	92.496				63.5	69.7	84.1	112.2	186.6	713	717	0.2252	0.1118	0.1611	0.0579	0.4223	0.2235	0.1497	0.1455	0.0964	0.3659	0.1046			0.8954	0.2061		0.1223	0.35	0.646	0.849	33.7	26.74	33.0	42.6	12.1	13.82	7.86	88	349	0.21	65.8	47.6	1.042	0.86	0.1545	0.1272	0.713	0.923	0.2282	0.868	0.893			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Side-look Acoustic Doppler Current Profiler (ADCP) gauge located on the River Blackwater at Farnborough.	Currently side-look ADCP. Side-look US installed in February 2009. This replaced the decommissioned EM. The EM had been installed as part of a R&D project into flow within two stage channels.	Calibration to be completed. Gaugings indicate that EM flows are overestimated in the low and medium range.	September 1997 and 1998 flows particularly suspect but all flows should be treated with caution.	Tertiary geology - mainly Bagshot Beds with London Clay in the headwaters and alluvium in the valley. Substantial and expanding urban development including Farnborough and Aldershot but large rural tracts remain; significant areas of heathland and woodland.	Flows managed by STW, supplemented in summer. Siltation occurs.
39125	Ver at Redbourn	62.6	TL1091611904	510916.0	211904.0	51°47'41.2750"N 0°23'35.1000"W	51.7948	-0.39308	Ver	Redbourn	91.9	EA-HNL	2815TH	39	1993-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	E	1993-02-16	2023-09-30	0.078	0.0	1996-10-05	2022-10-19	1.3	2001-02-12	2001-02-12	0.0	0.004	0.031	0.23	0.342	0.91	11184	11184	100.0				92.1	121.5	159.8	195.9	241.7	724	709	0.0992	0.5572	0.2467		0.0886	0.0893	0.556	0.279	0.0065	0.0692	0.8871			0.1129	0.0777	0.5795		0.3	0.65	0.995	44.4	34.76	31.7	38.7	10.6	16.79	9.72	159	125	0.29	92.1	62.57	0.221	0.936	0.0392	0.0275	0.612	0.894	0.0355	0.82	0.885			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located on the upper River Ver that was initially constructed to monitor low flows.	Flat-V weir (4.0m wide).	U/s and d/s level measurements are routinely made. Drowns but d/s reach regularly maintained by dredging to improve modularity.		A predominantly rural catchment on the dip-slope of the Chilterns (Chalk with significant Drift cover); land-use mainly arable and pasture. Part of Redbourn is immediately above the station.	Groundwater-fed ephemeral stream. Runoff reduced by gw abstraction - which has greatly diminished since May 1993 (the Ver is included in the EA's Alleviation of Low Flows Programme).
39126	Red at Redbourn	18.5	TL1067611714	510676.0	211714.0	51°47'35.2986"N 0°23'47.8410"W	51.79314	-0.39662	Red	Redbourn	92.1	EA-HNL	2816TH	39	1993-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	E	1993-02-18	2023-09-30	0.041	0.0	1997-01-08	2022-10-19	0.821	2021-06-18	2021-06-18	0.0	0.01	0.023	0.101	0.133	0.59	11182	11182	100.0				92.6	111.7	136.1	156.7	170.8	702	702	0.0719	0.6428	0.1317		0.1497	0.054	0.6605	0.1458	0.0005	0.1384	0.9271			0.0729	0.041	0.6294		0.3	0.644	0.993	30.0	35.31	31.6	38.3	10.6	9.43	4.91	135	102	0.33	93.9	22.41	0.305	0.87	0.0585	0.0767	0.788	0.905	0.0915	0.897	0.93			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located on the upper River Ver that was initially constructed to monitor low flows.	Flat-V weir (4.0m wide) which frequently drowns.	U/s and d/s measurements are routinely made. D/s reach regularly maintained by dredging which, improves modularity.	Flow data for Feb 1995 unreliable due to weed growth.	A predominantly rural catchment on the dip-slope of the Chilterns (Chalk); land-use is mainly arable/pasture; some urban development.	Groundwater-fed ephemeral stream (but can be responsive).
39127	Misbourne at Little Missenden	47.2	SU9342198458	493421.0	198458.0	51°40'37.6686"N 0°39'01.0391"W	51.67713	-0.65029	Misbourne	Little Missenden	101.0	EA-HNL	2873TH	39	1993-01-01		TPC				true	false	false	false	false	false	false	true	true	false	false	false	false	G	1993-10-21	2023-09-30	0.144	0.0	1997-07-09	1997-12-31	0.862	2001-02-12	2001-02-12	0.02	0.072	0.112	0.297	0.362	0.95	10937	10937	100.0				97.5	133.2	172.4	217.4	252.4	789	768	0.2291	0.4505	0.2327		0.0809	0.1957	0.3871	0.3592	0.0034	0.0545	1.0				0.0668	0.37	0.0241	0.31	0.724	0.961	65.2	26.94	36.2	43.8	11.5	15.19	7.8	173	114	0.19	97.5	47.26	0.208	0.935	0.0372	0.0177	0.523	0.66	0.0326	0.763	0.697			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located in the headwaters of the River Misbourne.	Rectangular thin-plate weir with flanking Crump crests.	Theoretical rating supported by gaugings (more scheduled to confirm calibration). Screen u/s of weir requires regular maintenance.	Very rare, and minor, bypassing during extreme flood conditions (e.g. Feb. 2001). Instrumentation difficulties over the 12/2006 - 5/2007 period, data under review.	A mostly rural catchment on the dip-slope of the Chilterns (Chalk); some development in the lower catchment.	The Misbourne is a Chalk stream; ephemeral, and influent in some reaches. Heavy (but declining) gw pumping in the headwaters has reduced base flows (the Misbourne is included in the EA Low Flow Alleviation Programme).
39128	Bourne (South) at Addlestone	90.1	TQ06036499	506030.0	164990.0	51°22'26.6739"N 0°28'41.0081"W	51.37408	-0.47806	Bourne (South)	Addlestone	10.9	EA-T	2989TH	39	1991-01-01		US				true	false	false	false	false	false	false	true	false	false	false	false	false	E	1991-01-09	2023-09-30	0.824	0.057	2022-08-04	2022-08-04	9.9	2000-11-07	2000-11-07	0.285	0.472	0.639	1.44	2.06	0.67	11953	11218	93.851				9.8	24.7	41.5	86.7	130.6	683	669	0.3371	0.0538	0.2188	0.0971	0.2907	0.3023	0.062	0.2921	0.1149	0.2269				1.0	0.069		0.0998	0.3	0.571	0.975	27.8	29.67	34.3	43.2	12.5	25.05	14.96	49	101	0.25	11.8	91.64	1.145	0.833	0.1866	0.0708	0.708	0.868	0.15	0.87	0.905			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station with patchy early record.	Cross-path time-of-flight ultrasonic station installed in 2012/13. After becoming ultrasonic, a bund was added to promote head level at low flows. Prior to ultrasonic, this was a velocity area station - low level sharp-crested weir (rather insensitive with poor approach conditions).	Control passes to road bridge at medium/high flows. Some confirmatory gaugings up to approx. 10 cumecs. Possible bypassing into R. Wey system (via canal) at very high flows. Rating change in Oct 1993 (earlier data may need reprocessing).	Patchy early record (when no back-up recorder).	The geology is largely impermeable Bagshot Beds. Very mixed land use with woodland and heath plus significant urban development.	Responsive regime.
39129	Thames at Farmoor	1608.6	SP43830673	443830.0	206730.0	51°45'27.1792"N 1°21'59.0081"W	51.75755	-1.36639	Thames	Farmoor	60.0	EA-T	1100TH	39	1992-01-01		US				true	false	false	false	false	false	false	true	false	false	true	false	false	P	1992-06-25	2023-09-30	15.118	0.058	2005-10-18	2005-10-18	74.1	1994-01-15	1994-01-15	0.969	4.07	9.27	40.0	52.8	0.69	11420	11292	98.879				61.1	76.7	119.1	223.2	330.2	757	731	0.1075	0.4566	0.3518	0.0	0.0662	0.0667	0.4977	0.3667	0.0056	0.0524	0.5577	0.047	0.3753	0.0199	0.093		0.0756	0.32	0.688	0.948	39.1	23.98	32.4	40.7	10.0	93.79	55.83	135	133	0.18	61.1	1607.33	1.916	0.823	0.1911	0.0243	0.668	0.974	0.0267	0.823	0.99			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauging station located on the main River Thames, downstream of the intake for Farmoor Reservoir.	Multi-path cross-configuration US.	Substantial left-bank by-passing (not via the Thames itself) under flood conditions.	Drought flow accuracy uncertain (at very low velocities) and gaugings suggest that flows may be overestimated by around 5%. Naturalised flows not routinely calculated.	Catchment is predominantly rural u/s of the station. The geology is mixed - pervious headwaters (Oolitic l'st), Oxford Clay in the lower reaches.	Levels affected by d/s gate movements, abstractions and lockages.
39130	Thames at Reading	4633.7	SU7180274065	471802.0	174065.0	51°27'39.6551"N 0°58'04.3286"W	51.46102	-0.96787	Thames	Reading	30.0	EA-T	2200TH	39	1992-01-01		US				true	false	false	false	false	false	false	true	true	false	true	false	false	PG	1992-08-19	2023-09-30	37.614	1.938	2022-09-29	2022-09-29	302.0	2003-01-04	2003-01-04	5.21	12.1	22.8	93.4	128.0	0.67	11365	11331	99.701				36.1	65.0	104.8	186.0	330.2	704	680	0.1053	0.448	0.3597	0.0002	0.0733	0.0677	0.4996	0.3652	0.0042	0.0566	0.3119	0.1836	0.4134	0.0911	0.0864	0.0089	0.0911	0.31	0.643	0.961	37.9	27.6	32.2	40.2	10.2	175.34	104.02	116	131	0.11	36.3	4599.01	1.579	0.941	0.1698	0.0246	0.665	0.969	0.0298	0.806	0.935			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauging station located on the main river channel under Reading Bridge.	Multi-path cross-configuration US sited beneath Reading Bridge (incorporates adjustment for flows outside the transducer piers).	Very minor bypassing via Gosbrook stream. Good c/m confirmation of calibration throughout the range.	Doppler gauging on 4/1/2003 at 300-310 cumecs.	Mixed geology with Cotswold headwaters (Oolitic L'st) and Oxford Clay. The land use is predominantly rural but with important, and growing, urban development in the valley (i.e. Oxford and Reading).	River levels affected by d/s weir and lock.
39131	Brent at Costons Lane Greenford	146.2	TQ1491482238	514914.0	182238.0	51°31'38.5356"N 0°20'41.5683"W	51.52737	-0.34488	Brent	Costons Lane Greenford	16.3	EA-HNL	3870TH	39	1989-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	SGI	1989-01-01	2023-09-30	1.12	0.115	2008-05-22	2008-05-22	25.9	2000-10-30	2000-10-30	0.185	0.329	0.531	2.58	4.15	0.29	12691	12691	100.0				14.8	35.4	60.2	104.5	153.2	681	667	0.0774	0.0322	0.1718	0.0006	0.7134	0.0608	0.0227	0.185	0.0004	0.7267				1.0	0.0812		0.0372	0.29	0.209	0.944	34.9	49.42	32.8	42.1	10.9	27.34	15.57	65	183	0.14	16.0	134.73	1.289	0.754	0.1239	0.4148	0.896	0.904	0.5279	0.943	0.909			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The lowest flow recording station on the Brent.	Flat V weir with vertical wing walls (bankfull: 2m).			A heavily urbanised (>50%) catchment in NW London, developed on London Clay.	Flow does not incorporate the d/s Greenford tributary. The Welsh Harp reservoir has significant impact on the flow regime.
39133	Wandle at Carshalton Ponds	1.1	TQ27996471	527990.0	164710.0	51°22'01.3408"N 0°09'46.1488"W	51.36704	-0.16282	Wandle	Carshalton Ponds	31.8	EA-KSL	4159TH	39	1955-01-01		TP		1.0		true	false	false	false	false	false	false	true	false	false	false	false	false	R	1995-10-01	2023-09-30	0.179	0.002	2003-10-16	2003-10-16	1.03	2014-02-14	2014-02-14	0.045	0.086	0.134	0.35	0.507	0.93	10227	10131	99.061				34.9	38.8	64.5	91.5	101.0	657	668	0.0735		0.0907		0.8332	0.0134		0.0358		0.9508	0.5727			0.4273	0.4521			0.29	0.855	1.0	33.8	11.17	33.8	41.5	10.5	2.82	1.44	65	356	0.75	34.9	0.9	0.192	0.547	0.0418	0.4791	0.87	0.929	0.6086	0.946	0.925			gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular sharp-edged weir constructed to monitor compensation inflows by Sutton and District Water Company.	Rectangular sharp-edged weir, not a primary gauging station.	Occasional problems with clinging nappe.	Drop out in flow in December 2017 due to pump failure not providing water to the ponds.	The Wandle is spring-fed (Chalk), but catchment is predominantly London Clay. Mainly urban/suburban land use.	During dry conditions, flow is almost entirely augmented by pumping from downstream into Carshalton Ponds.
39134	Ravensbourne at Bromley South	10.3	TQ4056668740	540566.0	168740.0	51°24'01.0167"N 0°01'09.5261"E	51.40028	0.01931	Ravensbourne	Bromley South	48.3	EA-KSL	4319TH	39	1993-01-04		FV				true	true	false	true	false	false	false	false	false	false	false	false	false	N	1993-04-01	2023-09-30	0.044	0.005	2004-01-19	2023-09-16	1.43	2013-12-23	2013-12-23	0.009	0.014	0.02	0.101	0.167	0.36	11140	11107	99.704	1962-10-01		4.851	45.1	58.2	70.9	99.0	154.4	700	680	0.1282	0.0507	0.1274	0.0007	0.6882	0.1008	0.069	0.1246		0.7045				1.0				0.27	0.685	0.993	24.8	24.99	33.8	44.1	11.2	7.28	3.38	75	290	0.34	45.1	9.77	0.353	0.969	0.0682	0.3481	0.864	0.751	0.4841	0.923	0.816	1992		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir (1:10 cross slope) with vertical wing walls. Very responsive flow regime.	Flat V weir (1:10 cross slope) with vertical wing walls. Straight approach with no significant modification to flow regime. Original structure built in 1962 as a critical depth flume. The structure was rebuilt in 1992.	Full range station, which has been theoretically rated (standard Flat V weir calculation). Higher gaugings show the structure appears to over-estimate higher flows. More gaugings are needed, but due to responsive regime it is difficult to capture high flow gaugings.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	The Ravensbourne rises from springs fed by Tertiary Sandstones (in Holwood Park). The majority of the lower catchment is mainly impervious, due to Eocene clay deposits and high levels of urban development (South London).	Very responsive flow regime.
39135	Quaggy at Chinbrook Meadows	14.5	TQ4101272227	541012.0	172227.0	51°25'53.4212"N 0°01'37.5807"E	51.43151	0.02711	Quaggy	Chinbrook Meadows	36.3	EA-KSL	4386TH	39	1962-01-01		FV				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1992-10-01	2023-09-30	0.057	0.0	2009-10-26	2023-09-30	1.4	1993-10-12	1993-10-12	0.001	0.015	0.031	0.127	0.196	0.43	11322	10296	90.938				34.4	54.5	80.9	103.2	133.9	682	673	0.2409	0.0245	0.1497		0.5848	0.2192	0.0232	0.1806		0.5769				1.0				0.27	0.71	0.998	43.1	24.24	34.4	43.9	11.3	12.67	6.01	80	347	0.22	34.7	14.79	0.415	0.968	0.0535	0.2837	0.804	0.978	0.3694	0.884	1.006			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Intermittent river that regularly dries during the summer. Flat V weir installed 2002.	Flat V weir installed 2002 (large fall d/s implies full modular range); replaced (with marginal increase in catchment area) rectangular critical depth flume (flood walls added May 1982) 220m u/s.		Sensibly continuous flow record. Original station subject to considerable gravel accretion.	Geology: London Clay, also Reading/Woolwich Beds. A linear urban/suburban catchment in south London.	Responsive regime. No significant artificial influences.
39137	Yeading West at Gutteridge Wood	21.1	TQ0964184386	509641.0	184386.0	51°32'51.8083"N 0°25'12.6895"W	51.54772	-0.42019	Yeading West	Gutteridge Wood	31.6	EA-HNL	3625TH	39	1994-01-01		FL				true	false	false	false	false	false	false	true	false	false	false	false	false		1994-03-09	2023-09-30	0.175	0.01	2009-07-01	2014-10-03	4.98	2016-06-23	2016-06-23	0.022	0.043	0.062	0.422	0.722	0.31	10798	10798	100.0				30.8	37.8	50.0	63.5	113.4	675	656	0.0376	0.0274	0.2036		0.7314	0.0131	0.003	0.2209		0.763				1.0				0.29	0.172	0.999	15.8	50.11	31.5	40.3	10.9	13.58	7.49	50	193	0.35	30.9	17.64	1.216	0.844	0.2076	0.3783	0.901	1.106	0.5122	0.951	1.097			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station is located on the Yeading Brook, West London.	Rectangular flume.		Flow data in January 2003 under review - minimum appears unrealistically low.	Largely impervious suburban catchment in NW London.
39138	Loddon at Twyford	690.03	SU778768	477800.0	176800.0	51°29'05.3194"N 0°52'51.4172"W	51.48481	-0.88095	Loddon	Twyford	32.0	EA-T	2490TH	39	1994-01-01		IV				true	false	false	false	false	false	false	false	false	false	true	false	false	E	1994-11-22	2023-01-10	6.278	1.262	2006-08-06	2006-08-06	61.4	2000-11-07	2000-11-07	2.31	3.45	4.436	12.0	16.6	0.7	10277	7591	73.864				31.7	49.1	75.0	124.7	228.2	711	703	0.1934	0.2395	0.2752	0.016	0.262	0.2024	0.314	0.2438	0.0269	0.2035	0.2259			0.7741	0.1639	0.021	0.0546	0.31	0.585	0.902	29.4	28.59	31.8	40.9	11.7	53.6	31.64	82	6	0.19	31.8	690.03	1.086	0.822	0.1465	0.0652	0.678	0.999	0.1218	0.864	1.039			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station, employing ADCP devices, located in the lower stages of the River Loddon just above the confluence with the River Thames.	Two side-looking ADCP devices, installed since 2010, located within two rectangular road bridge culverts. Previously, data was supplied by a multi-path US (cross configuration) located 200m d/s on a gently curving reach spanning the total length of the lower stages of the river.	Full range. MAF easily contained. Significant weed growth in summer. Large step in middle of channel leads to two levels of water.	Ultrasonics affected by power supply and instrumentation problems (e.g. siltation caused difficulties with the lowest of the six flight paths) causing some record gaps. No flows recorded 2006-2010 due to removal of ultrasonic equipment, installation of ADCPs and development of index velocity rating.	Mixed geology and land use. Chalk headwaters, mainly London Clay below. Large rural tracts but substantial urban development, in the eastern catchment particularly.	U/s spillage (floodplain storage rather than bypassing) begins around 60 cumecs.
39140	Ray at Islip	290.1	SP52321373	452320.0	213730.0	51°49'11.1158"N 1°14'32.4423"W	51.81975	-1.24235	Ray	Islip	50.0	EA-T	1489TH	39	1994-01-01		US				true	false	false	false	false	false	false	true	false	false	false	false	false		1995-10-01	2023-09-30	2.093	0.028	2020-06-03	2020-06-03	20.5	2003-01-05	2003-01-05	0.133	0.384	0.733	6.609	9.3	0.44	10227	10021	97.986				57.5	60.6	74.9	107.3	196.2	654	630	0.1134	0.4257	0.4013	0.0	0.0531	0.0628	0.395	0.4817	0.0071	0.051		0.3293	0.6707				0.1038	0.32	0.49	0.984	17.9	36.93	31.2	38.8	9.9	33.82	17.67	80	173	0.17	58.5	290.0	2.069	0.796	0.2832	0.0133	0.636	0.921	0.0212	0.792	0.912			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauging station located in the lower reaches of the River Ray just above the confluence of the River Cherwell.	Multi-path cross-configuration US (in two-channel section).	Good hydrometric performance but very low velocities in low flow conditions.		Relatively flat impermeable (Oxford Clay) catchment given over largely to agriculture (but includes Bicester). The station is just below Otmoor.	Only minor disturbances to the natural (and responsive) flow regime.
39141	Wey at Guildford	689.6	SU99374950	499370.0	149500.0	51°14'09.7441"N 0°34'40.8663"W	51.23604	-0.57802	Wey	Guildford	30.4	EA-T	3080TH	39	1995-01-01		US				true	false	false	false	false	false	false	false	true	false	true	false	false	PG	1996-10-01	2023-09-30	6.187	0.983	2020-11-09	2020-11-09	91.5	2013-12-24	2013-12-24	2.29	3.36	4.28	11.8	17.3	0.67	9861	9470	96.035				30.4	57.3	105.4	184.2	291.4	837	825	0.3026	0.2555	0.2832	0.0182	0.1314	0.2914	0.2562	0.3317	0.034	0.0835	0.7482	0.0524	0.112	0.0873	0.0425	0.1041	0.0051	0.35	0.759	0.94	62.2	21.07	35.6	47.2	11.4	74.42	34.9	114	331	0.05	30.4	690.78	0.535	0.851	0.0672	0.0224	0.547	0.88	0.0482	0.779	0.93			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauging station installed below a road bridge in the centre of Guilford where the river and navigation channels are coincident.	Multi-path US (cross configuration) that was upgraded in 2003.	All but extremely rare flows contained.		Mixed geology and land use.	Responsive regime.
39142	Windrush at Bourton on the Water	65.5	SP1607320936	416073.0	220936.0	51°53'12.3116"N 1°46'04.3465"W	51.88675	-1.76787	Windrush	Bourton on the Water	132.1	EA-T	1020TH	39	1994-01-01		C				true	false	false	false	false	false	false	true	false	false	false	false	false	G	1995-10-01	2023-09-30	0.757	0.286	2011-10-14	2011-11-11	4.11	2007-07-21	2007-07-21	0.338	0.493	0.638	1.29	1.61	0.94	10227	10222	99.951				131.4	176.7	230.0	273.7	304.0	801	799	0.1656	0.4496	0.3456		0.0282	0.1006	0.4875	0.4031	0.0039	0.0047	0.7842		0.2158					0.33	0.883	0.981	83.1	10.67	35.1	44.6	10.9	22.89	12.07	226	117	0.13	131.4	65.28	0.139	0.785	0.0145	0.0079	0.435	0.882	0.0049	0.255	0.217			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located in the upper reaches of the River Windrush.	Crump weir. U/s and d/s levels monitored.	The structure rarely drowns but submerged during exceptional floods.		The station is sited close to the edge of the Oolitic L'st outcrop. A largely permeable catchment, very rural in character.	Baseflow-dominated regime with significant groundwater abstraction.
39143	Dikler at Bourton on the Water	90.7	SP1799619619	417996.0	219619.0	51°52'29.4743"N 1°44'24.0086"W	51.87485	-1.74	Dikler	Bourton on the Water	123.9	EA-T	1029TH	39	1994-01-01		C				true	false	false	false	false	false	false	true	false	false	false	false	false	G	1995-10-01	2023-09-30	0.969	0.119	2011-12-07	2011-12-07	5.359	2014-01-04	2014-01-04	0.209	0.418	0.72	2.04	2.61	0.83	10227	10227	100.0				126.2	144.8	211.8	266.0	317.2	794	759	0.15	0.4007	0.402	0.0001	0.0358	0.1064	0.3811	0.4963	0.0043	0.0082	0.7765		0.2235		0.0005		0.0191	0.33	0.775	0.942	64.1	17.9	36.5	44.3	11.0	23.1	11.86	210	134	0.19	126.4	89.26	0.312	0.481	0.0431	0.0068	0.508	0.462	0.0056	0.717	0.366			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The gauging station is located on the River Dikler, a tributary of the upper River Windrush.	Crump Weir.	All flows contained, no bypassing but weir submerged during floods.		Mixed geology: Oolites and Lias. Rural catchment with very limited urban development (but the station is just below the town of Bourton-on-the-Water).	Substantial baseflow but responsive to rainfall. Significant gw abstraction.
39144	Sor at Bodicote	87.7	SP4628236901	446282.0	236901.0	52°01'42.9514"N 1°19'36.5869"W	52.0286	-1.32683	Sor	Bodicote	90.5	EA-T	1437TH	39	1994-01-01		C				true	false	false	false	false	false	false	true	false	false	false	false	false	P	1995-05-26	2023-09-30	0.682	0.043	2022-07-26	2022-07-26	10.7	1998-04-09	1998-04-09	0.143	0.271	0.461	1.481	1.95	0.74	10355	10353	99.981				89.8	117.6	151.8	193.5	225.0	704	660	0.1138	0.5033	0.3243		0.0509	0.0253	0.5735	0.3793	0.0006	0.0203		0.0879	0.9121				0.0153	0.3	0.727	0.994	63.3	23.18	33.1	41.0	11.2	20.56	12.09	153	117	0.23	89.8	89.2	0.335	0.796	0.0449	0.0188	0.641	0.762	0.017	0.681	0.797			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Located on Sor Brook, the crump weir replaced the Adderbury gauging station (39051) that closed in April 1988.	Crump Weir with u/s and d/s levels monitored.		Peak of the April 1998 flood was estimated at around 17 cumecs.	Primarily an impermeable (Middle Lias) catchment. The catchment is rural in character.	Appreciable baseflow but also very responsive to rainfall. Significant abstraction u/s - but only operates when flows > 0.16 cumecs.
39145	Yeading Brook East at Western Avenue A40	9.62	TQ1118884538	511188.0	184538.0	51°32'55.6379"N 0°23'52.2334"W	51.54879	-0.39784	Yeading Brook East	Western Avenue A40	32.5	EA-HNL	3629TH	39	1993-09-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1989-01-01	2023-09-30	0.057	0.0	1993-06-04	1993-06-07	1.81	1993-10-12	1993-10-12	0.007	0.013	0.02	0.143	0.244	0.25	12691	12691	100.0				31.8	35.9	43.1	65.1	116.2	662	645	0.0363	0.0076	0.166		0.7901	0.0144		0.1826		0.803				1.0				0.29	0.175	1.0	22.5	50.61	31.6	40.7	11.1	6.0	2.86	48	252	0.38	31.8	8.52	0.75	0.704	0.1324	0.4342	0.902	1.059	0.5484	0.944	1.081			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located on Yeading Brook East, West London.	Flat V weir that was rebuilt in 1993. Initially established from 1974 it was removed in 1981 and subsequently replaced in October 1985.		The NRFA holds records from 1995 onwards. The EA hold flow records from the 1988 water year.	A heavily urbanised catchment developed in London Clay.	Very responsive regime.
39146	Mill Brook at Blewbury	2.0	SU5318486483	453184.0	186483.0	51°34'28.9664"N 1°14'02.2461"W	51.57471	-1.23396	Mill Brook	Blewbury	59.8	EA-T	2020TH	39	1995-01-01		FV				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1996-10-01	2023-08-29	0.112	0.005	1997-07-24	1997-07-30	0.409	2014-02-06	2014-02-06	0.033	0.072	0.098	0.199	0.242	0.96	9829	9798	99.685				58.3	62.8	75.8	122.6	159.7	654	650		0.5331	0.395		0.0719	0.02	0.582	0.2446		0.1533	1.0						0.2277	0.32	0.95	1.0	47.4	6.67	33.4	41.7	10.0	3.09	1.48	86	36	0.69	58.1	2.06	0.418	0.494	0.0727	0.0479	0.514	0.715	0.0424	0.579	0.727			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station located downstream of the Oxfordshire village of Blewbury at the foot of the Berkshire Downs.	Flat V weir.		Groundwater catchment substantially exceeds the topographical catchment; runoff totals are unrealistic.	Rural catchment developed on the Chalk (but Blewbury village is immediately u/s).	Stable regime - the Mill Brook is spring-fed. Thames Water abstraction occurs u/s. Flow constraint of 40 megalitres/day.
39147	Wendover Springs at Wendover	9.5	SP869083	486900.0	208300.0	51°45'59.9217"N 0°44'31.6373"W	51.76664	-0.74212	Wendover Springs	Wendover	120.1	CRT		39	1841-01-01		TP				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1963-12-30	2022-09-30	0.084	0.001	2008-04-01	2008-04-01	0.316	2014-02-16	2014-02-18	0.032	0.058	0.075	0.138	0.158	0.96	21460	19382	90.317				118.1	139.5	171.2	241.4	268.3	766	745	0.3859	0.2935	0.1975		0.1123	0.3377	0.2788	0.3007		0.0819	1.0				0.021	0.1024		0.32	0.841	1.0	97.8	16.7	35.2	43.5	11.2	5.16	2.85	182	307	0.15	118.1	9.48	0.079	0.621	0.0179	0.0299	0.692	0.253	0.0438	0.801	0.252			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Earliest extant gauging station in the UK. It provides a unique insight into spring flow variability in the 19th century.	Thin-plate weir (0.91m wide) monitoring outflow from the Wendover Springs (into the Wendover Arm of the Grand Union Canal).	The station was commissioned in the 1962, processed flows from 1989 (microfilmed level charts for pre-1989 period). Complemented by historical monthly series 1841-1897; method of flow measurement uncertain but runoff patterns consistent with rainfall. Algal/weed growth on and u/s of the crest can affect levels - overestimating runoff.		The Wendover Springs issue from the scarp slope of the Chilterns - Chalk (with a limited amount of Drift cover). Land use is mostly woodland and pasture but significant urban growth occurs near the gauging station.
39148	Thames at Maidenhead	6910.0	SU90148138	490140.0	181380.0	51°31'26.9458"N 0°42'07.5975"W	51.52415	-0.70211	Thames	Maidenhead		EA-T	2604TH	39	2003-01-01		US				true	false	false	false	false	false	false	true	false	false	false	false	false	PG	2003-01-04	2023-09-30	49.762	0.0	2022-06-25	2022-06-26	242.0	2003-01-04	2003-01-04	10.2	19.96	32.59	120.3	153.0	0.73	7575	7546	99.617				21.5	61.7	107.0	188.6	330.2	717	697	0.1302	0.4122	0.3418	0.002	0.097	0.1005	0.4692	0.3412	0.0068	0.075	0.4047	0.1256	0.2751	0.1945	0.1116	0.0541	0.0789	0.31	0.665	0.954	41.7	25.88	32.3	40.7	10.5	217.67	121.76	117	115	0.1	21.5	6910.33	1.434	0.996	0.1502	0.0301	0.665	0.859	0.0423	0.826	0.793			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauging station (US) located on the lower reaches of the main River Thames.		Multi-path ultrasonic gauge.	Flows need to be added to the station at Taplow (39866) to get a representation of flow within the Thames.	Large catchment; scarp and vale topography developed on diverse geology. Predominately rural headwaters contrast with considerable suburban growth in the lower valley.
39866	Jubilee River at Taplow	6908.94	SU9045281950	490452.0	181950.0	51°31'45.2121"N 0°41'50.8859"W	51.52923	-0.69747	Jubilee River	Taplow		EA-T	2603TH	39	2003-02-01		US				true	false	false	false	false	false	false	false	false	false	false	false	false		2003-02-01	2023-09-30	10.671	0.777	2005-11-06	2005-11-06	160.0	2014-01-09	2014-01-10	2.865	6.598	8.623	12.1	15.6	0.71	7547	7162	94.899									717	697	0.13	0.4126	0.342	0.0019	0.0969	0.1005	0.4694	0.3412	0.0028	0.0748								0.31	0.665	0.954	41.7	25.88	32.3	40.7	10.5	217.01	121.11	117	115	0.1	21.6	6908.94	1.432	0.996	0.1502	0.0301	0.665	0.858	0.0423	0.826	0.792			gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauging station located in a 12 km bypass channel of the River Thames.	Bypass channel commissioned in 2002 to alleviate flooding in Maidenhead, Bray and Windsor. Channel designed to carry 215 cumecs.	Multipath ultrasonic gauge.	Flows need to be added to the station at Maidenhead (39148) to get a representation of flow within the Thames.
40001	Medway at Weir Wood Reservoir	26.9	TQ407353	540700.0	135300.0	51°05'59.0920"N 0°00'29.1722"E	51.09975	0.0081	Medway	Weir Wood Reservoir	61.8	SW		40	1952-01-01	1969-06-09	FL				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1953-10-01	1967-09-30	0.166	0.016	1953-10-02	1953-10-06	6.23	1955-01-16	1955-01-16	0.042	0.062	0.063	0.385	0.7	0.43	5113	5113	100.0				66.5	83.8	114.9	153.4	191.1	860	852	0.3661	0.2293	0.2753		0.0796	0.2608	0.1834	0.4659	0.0045	0.0411		1.0						0.36	0.427	0.761	82.7	43.24	36.1	49.7	11.9	11.43	6.3	116	37	0.17	66.5	26.71	0.246	1.014	0.0264	0.0152	0.546	1.395	0.0301	0.789	1.379			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume with low flow notch.	Measures compensation and overflow from Weir Wood Reservoir.
40002	Darwell at Darwell Reservoir	9.6	TQ722213	572200.0	121300.0	50°57'55.3891"N 0°27'03.3812"E	50.96539	0.45094	Darwell	Darwell Reservoir	21.0	SW		40	1956-01-01	1975-12-31	TPFL				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1956-10-01	1975-09-30	0.02	0.001	1971-02-09	1971-02-09	6.575	1960-12-04	1960-12-04	0.004	0.005	0.009	0.014	0.032	0.41	6939	6696	96.498				28.7	45.8	95.2	147.9	191.7	897	877	0.4924	0.0588	0.3488		0.0341	0.4971	0.0568	0.3728		0.0023		1.0						0.34	0.422	0.743	92.1	43.9	36.5	48.9	11.5	7.32	3.84	95	100	0.19	28.7	9.56	0.321	0.894	0.0229	0.0051	0.43	1.188	0.0012					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound thin-plate weir for low flows.	Measures outflows from Darwell Reservoir - storage augmented by pumping from River Rother. High flows monitored 70m downstream at rectangular critical depth flume.
40003	Medway at Teston / East Farleigh	1256.1	TQ7086553033	570865.0	153033.0	51°15'03.1304"N 0°26'49.0579"E	51.25087	0.44696	Medway	Teston / East Farleigh	7.0	EA-KSL	453202901	40	1956-01-01		MIS		14.0	11.8	true	true	true	true	false	true	false	true	true	true	true	true	true	SRPG	1956-10-01	2023-09-30	11.221	0.046	1975-08-07	1975-08-07	335.0	2013-12-25	2013-12-25	1.58	2.9	4.47	26.2	46.0	0.4	24471	24185	98.831	1956-09-24		132.959	6.8	23.4	67.9	130.4	267.7	755	743	0.2331	0.275	0.3658	0.0015	0.1098	0.19	0.2937	0.4464	0.0065	0.0559	0.1104	0.4822	0.397	0.0103	0.0561	0.0039	0.0501	0.35	0.44	0.954	53.6	41.31	33.3	44.3	11.7	67.28	36.27	73	80	0.05	6.9	1261.31	1.13	0.795	0.1275	0.0186	0.614	0.962	0.0335	0.804	1.03			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combined flow series from two separate stations Teston (low flows) and East Farleigh (high flows). Gauges a mixed geology catchment with complex water utilisation.	Combination of low flows from Teston (Fish Pass and Crump Weir) and flows > 17 cumecs from East Farleigh (velocity-area station) 2km downstream.	The river is canalised from the tidal sluices near Maidstone to Tonbridge and there are several controls both automatic and manually operated. Site is subject to some tidal influence under certain conditions, and vegetation can cause gauging problems. Rating developed using gaugings with hydraulic model beyond gauged range. Confidence in extrapolation to bankfull.	Combination of flows from Teston and East Farleigh may not be complete on National River Flow Archive. Peak flows given are exclusively from East Farleigh data. Patchy daily flow record 1966-1973. Pre-1970, errors in data caused by leakage and blockage of sluices - this was later dealt with through reconstruction. Naturalised flows available. No POTs shown after water year 2011-12.	Main tributaries upstream include the Rivers Eden, Bourne, Teise & Beult. Mixed geology comprising Hastings Beds, Weald Clay & Lower Greensand. The Hastings Beds are composed of Sandstones, Siltstones & Clays. Impervious formations constitute up to half of the catchment. Diverse land use; predominantly rural with significant areas of woodland and orchard; several substantial towns also (including East Grinstead, Forest Row, Crowborough and Tunbridge Wells).	Locally important aquifers feed springs which provide the baseflow for the headwaters of the tributaries of the Medway, but a responsive regime. Complex water utilisation with significant artificial disturbance. Three public water supply reservoirs exist in the Medway catchment upstream of the gauging station: Weir Wood Reservoir on the Upper Medway, Bough Beech Reservoir on a tributary of the Eden, Bewl Water Reservoir on the River Bewl, a tributary of the River Teise. These reservoirs affect the runoff within the catchment, occupying 0.5% of the total catchment area. Runoff is also affected by groundwater abstraction and/or recharge, regulation and by industrial abstraction. Radial flood gates at Yalding can alter flow frequently. Leigh Barrier (22.16km upstream of Teston) constructed 1981, consists of a flood storage reservoir capable of retaining up to 5.58 million cubic metres of water and is the largest 'on line' flood storage reservoir of its kind in the UK.
40004	Rother at Udiam	206.0	TQ77252441	577250.0	124410.0	50°59'30.4596"N 0°31'27.4738"E	50.99179	0.5243	Rother	Udiam	2.1	EA-KSL	556505001	40	1962-10-01		FVUS		2.5	23.8	true	true	false	true	false	false	false	true	false	false	true	false	false	SGE	1962-10-01	2023-09-30	2.482	0.056	1990-10-13	1990-10-14	104.0	2000-10-12	2000-10-12	0.189	0.374	0.714	6.72	10.9	0.31	22280	21568	96.804	1958-10-01		43.573	7.2	31.9	77.7	136.1	195.8	861	857	0.3394	0.133	0.462		0.0528	0.2577	0.1635	0.5606	0.0003	0.0131		1.0					0.0402	0.35	0.388	0.975	92.7	44.42	36.6	48.8	11.6	33.27	17.75	81	114	0.11	7.2	204.64	0.712	0.674	0.0573	0.0078	0.508	0.977	0.0111	0.684	1.059	1969..1991		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir with, since September 2012, one path ultrasonic to monitor higher non-modular flows. The flow up to 4.75 cumecs is based on power law rating in three sections. Above this the ultrasonic calculates flow.	Flat V Weir with multi-path ultrasonics. Ultrasonics were installed in 2000 but not incorporated into the flow record until 2012. 2000 Rebuild superseded original Flat V (1992-2000) in embanked river section with paved bed and weir control for low stages that was insensitive at low flows. Deformation of crest was suspected and station rebuilt as a new flat-V weir with cableway in July 1992. Previously a broad-crested weir (1961-1992) and velocity-area section (pre-1961) (274m d/s of road bridge) and a flume at Robertsbridge pumping station (for flows below 1.54 m3/s, some turbulence was experienced at lower flows).	Section consists of a narrow, well-defined channel with rock bed and good fall. Flows confined except in extreme floods when station is bypassed. Weir is non-modular above 0.6 m, and drowns early (due to downstream tidal sluice). Ultrasonics were installed in 2012 to calculate flows above the non-modular limit. Flood embankment constructed to encapsulate higher flows up to 1.54 m3/s. Stage-discharge relationship affected by downstream conditions following high flows. Difficult to produce fixed rating due to backwater effects and land drainage works.	Revised and alternating ratings Historic_Summer and Historic_Winter have been applied between 1992 and 2012. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Catchment developed on sands and clays of the Wealden Series - impervious types predominate. Includes mostly Weald Clay and Upper and Lower Tunbridge Wells Sand, with the remainder made up of Upper Greensand, Ashdown Sand, Folkestone Beds, Sandgate Beds, Hythe Beds, and Atherfield, Grinstead, Gault and Wadhurst Clays. Resulting in a responsive flow regime in a small baseflow supported from the Upper Greensand. Predominantly rural catchment with scattered settlements including Edenbridge, Godstone, Lingfield and East Grinstead (which occupy approx. 3% of the total catchment area). With a catchment area u/s of Penshurst of 224km2,, with Penshurst G/S only 2.8km U/S of the confluence with the River Medway.	Large areas of on-field storage exist during flood events, floodplain is approx. 400m wide at the gauge site. Offtake for Bough Beech Reservoir is upstream - occupying less than 1 per cent of the total catchment area, it causes a small net export of water but does not operate during summer periods. Some slight regulation by Hever Castle Lake 3.2km upstream. Leigh Flood Barrier, constructed 1981, d/s can cause some hysteresis at the gauge. Consists of a flood storage reservoir capable of retaining up to 5.58 million cubic metres of water and is the largest on line flood storage reservoir of its kind in the UK. Vexour Bridge is one of the main flood warning stations used for input to the Leigh Barrier. Possible change in channel dimensions over time. Large areas of on-field storage exist during flood events (floodplain is approx. 400m wide at the gauge site).
40005	Beult at Stilebridge	277.1	TQ75874777	575870.0	147770.0	51°12'07.4545"N 0°30'57.6864"E	51.20207	0.51602	Beult	Stilebridge	11.5	EA-KSL	453210001	40	1958-01-01		FVUS			11.4	true	true	true	true	false	false	true	true	false	false	true	false	true	EI	1958-10-01	2023-09-30	2.103	0.001	2003-05-08	2003-05-08	79.4	2013-12-24	2013-12-24	0.057	0.183	0.411	5.44	10.5	0.23	23741	23451	98.778	1958-10-01		38.239	13.1	21.4	39.0	81.2	160.6	691	691	0.1502	0.4052	0.3574	0.0003	0.0775	0.1312	0.3776	0.4651	0.0009	0.0226	0.1185	0.1421	0.7394		0.0367		0.0296	0.34	0.353	0.992	27.4	44.56	32.5	42.0	11.8	36.97	20.33	45	276	0.03	13.1	278.05	1.227	0.886	0.184	0.0062	0.528	0.887	0.0148	0.722	0.992	1984..1988		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir with high flow rating. Ultrasonics used to validate high flow rating. Predominantly clay catchment on the largest tributary of the Medway.	Flat V-weir with high flow rating and single-path ultrasonics installed to help validate high flows. The station is located on a long and reasonably straight reach of the River Beult approx. 110m downstream of the Stile bridge, 12 km upstream of the Medway confluence. Constructed in 2001 to replace existing weir ~30m d/s, a compound broad-crested structure, with the central flume separated by short divide piers (which could trap debris) from the broad-crested flanking sections. The ends of the dividing walls caused disturbance of flow, although modelling showed a negligible overall impact. Regarded as full range aside from largest exceptional events.	Flat V weir is primary flow calculation. Flood banks confine flows, the floodplain beyond this is approx. 300-400m wide and water now seeps through into adjacent field due to rabbit burrowing. Out-of-bank flows can be significant but are accounted for in the rating. Stepping boards in place on upstream bridge in summer to maintain levels; their insertion and removal is managed separately so the time of adjustment of levels in unknown. But they are far enough upstream to not affect the gauge. Heavy upstream weed growth causes issues with lower ultrasonic paths during summer months. Regular maintenance required but difficult due to depth of channel. Upper ultrasonic paths function well despite this meaning that portion of flow calculated through this method is reliable. The Medway may control the levels in severe floods. Station calibrated by model tests and cableway gaugings (79 cumecs gauged during Oct 2000 flood), though cableway no longer in place.	Peak flow data pre-2001 are from the weir site. Post-2001 are from weir and ultrasonics. Drop out in daily flows in April 2015 confirmed by the EA, pattern also seen at upstream station. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	The Beult forms the largest tributary of the River Medway. Weald clay accounts for 78% of the catchment. Base flow is very low for a Kent catchment. Very little natural storage exists causing a flashy runoff regime. Some spring flow is received from Lower Greensand outcrop along northern margin (6% of the catchment) and also from Hastings Beds (consisting of Tunbridge Wells Sands, Wadhurst Clay & Ashdown Sands) which outcrop in the south (16% of the catchment). Predominantly rural with scattered settlements, total urban coverage <1% of total catchment area.	Small overall impact of artificial influences - all abstraction is agricultural (and therefore very variable). Runoff increased by effluent returns. Some upstream temporary summer weirs and sluices in past. Minor baseflow (from the Lower Greensand) but very responsive regime.
40006	Bourne at Hadlow	50.3	TQ6316849612	563168.0	149612.0	51°13'20.5909"N 0°20'06.7661"E	51.22239	0.33521	Bourne	Hadlow	24.0	EA-KSL	453310001	40	1959-01-01		EM		12.7	9.6	true	false	false	false	false	false	false	true	false	false	false	false	false	GE	1959-10-01	2023-09-30	0.318	0.033	2006-07-20	2006-07-21	9.41	1991-08-01	1991-08-01	0.068	0.15	0.21	0.568	0.894	0.59	23376	19999	85.554				23.0	44.5	96.6	156.3	234.3	734	719	0.261	0.3015	0.3151	0.0002	0.1131	0.2441	0.3227	0.3713	0.0062	0.0546	0.6644		0.2287	0.1069	0.007	0.0473		0.36	0.631	0.963	64.7	29.37	33.6	44.8	11.9	16.65	8.63	98	153	0.2	23.0	49.48	0.327	0.763	0.0396	0.0229	0.552	1.114	0.0364	0.77	1.155			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Electromagnetic gauge installed July 2002, located in a formalised flume structure. Flow record often incomplete. Capable of flashy response.	Electromagnetic gauge installed July 2002, located in a formalised flume structure, situated on a 0.2 km straight reach of the River Bourne approx 100m d/s of the A26 bridge at Hadlow. At the end of the measurement reach the river passes under a farm bridge. Originally a trapezoidal (long throated) critical depth flume, with stated capacity 8.5m3/s, though drowned at high flows - variable modular limit and constant dredging needed downstream. Removed from peak flows dataset in February 2018 (WINFAP Files v6).	EM flume has significantly bigger cross-section (and thus flow capacity) than previous trapezoidal (long throated) flume. Long throated flume rating based on hydraulic calculations. Rated to bankfull and hydraulic modelling beyond. No high-flow or out-of-bank gaugings to confirm rating.	Flow estimates for both the original flume and EM gauge are poor, with a step change between the two records. 1968 peak flow estimated at 57 cumecs on basis of wrack marks.	A largely baseflow dominated regime, the River Bourne rises on Gault Clay below the scarp of the North Downs, forming a tributary to the River Medway. The river flows south cutting through Ragstone Ridge, an outcrop of Lower Greensand, before entering the Vale of Kent. It is fed by springs from the Lower Greensand but runoff is predominantly generated from the Weald Clays of the Vale of Kent. Area of the catchment naturally impervious and pervious (half-and-half), including Upper, Middle & Lower Chalk, Folkestone Beds, Atherfield Clay, Gault Clay, Sandgate Beds, Hythe Beds, Weald Clay. A mainly rural catchment, excluding Borough Green which occupies <1% of the total catchment area. Remainder is grazing and woodland with a substantial acreage devoted to orchards.	Capable of flashy response; rapid runoff from the Weald Clay. Some artificial regulation from a mill half a mile u/s, this effect causes differences of up to 3 cumecs. Significant spray irrigation. Runoff increased by effluent returns. Very substantial baseflow contribution but capable of flashy response. Some artificial regulation from mill upstream. Significant spray irrigation. Public water supply abstractions from groundwater.
40007	Medway at Chafford / Colliers Land Bridge	255.1	TQ51784059	551780.0	140590.0	51°08'40.0495"N 0°10'06.4433"E	51.14446	0.16846	Medway	Chafford / Colliers Land Bridge	30.8	EA-KSL	453500002	40	1960-01-01		FLVA	60.0	8.5	10.2	true	true	true	true	false	false	false	false	false	false	false	false	false	SE	1960-10-01	2023-09-30	2.953	0.023	2020-09-27	2020-09-27	75.9	2013-12-24	2013-12-24	0.349	0.812	1.399	6.583	10.9	0.45	23010	22772	98.966	1960-09-23		49.828	33.0	62.1	104.2	162.2	241.8	852	831	0.3514	0.1641	0.3212	0.0064	0.1418	0.273	0.1789	0.4456	0.0281	0.0685		1.0					0.0353	0.35	0.441	0.937	82.5	42.34	34.8	47.2	11.7	30.14	15.15	109	32	0.06	33.6	252.07	0.492	0.72	0.0429	0.02	0.601	1.224	0.0397	0.827	1.212			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combined flow series from two separate stations Chafford (low flows) and Colliers Land Bridge (high flows). Gauging a mixed geology catchment with responsive regime despite significant baseflow.	Combination of low flows from Chafford (humped trapezoidal flume) and high flows from Colliers Land Bridge (Ultrasonic and velocity-area station). Located ~3km upstream of the confluence with River Eden at Penshurst and ~9km upstream of the Leigh flood barrier.	As of Feb-2012 flow measurement methodology at Colliers Land Bridge has changed significantly. The site is now a full range station with time ultrasonics used to 3.4m with velocity area method above this. Channel subject to erosion. In major historical events (1960, 2000) bypassing over Spring Hill road has covered full width of grass floodplain.	The flows for the 1968 and 2000 events show flat topping, due to the exceedance of the stilling well. The modelled upper limb of the rating underestimates flows based on the flow through the Leigh barrier during the 2000 event. Drop outs in daily flow in July 2019 and September confirmed as true by EA - due to sluice movements. No POTs are shown after water year 2011-12.	The Medway originates as a spring just above Turners Hill (West Sussex) and flows in a northeasterly direction to Colliers Land Bridge. Geology is mixed but mainly Ashdown Sands and Wadhurst Clay. Also Upper Tunbridge Wells Sand, Grinstead clay and Lower Tunbridge Wells Sands. One-third of the catchment is naturally impervious, two-thirds permeable. The Medway drains from Ashdown Forest and the catchment is predominantly rural in character, apart from East Grinstead, Forest Row and Crowborough which occupy approximately 3% of the catchment area.	Quite a responsive regime despite significant baseflow - locally important aquifers feed the numerous springs which provide the baseflow for the headwaters. Catchment includes Weir Wood Reservoir, which provides compensation flows. Small net export of water. Sluices upstream can influence levels. Runoff increased by effluent returns. Leigh Barrier constructed downstream 1981, consists of a flood storage reservoir capable of retaining up to 5.58 million cubic metres of water & is the largest 'online' flood storage reservoir of its kind in the UK. Colliers Land Bridge is used as one of the main flood warning stations for input to the Leigh Barrier. Bewl Water reservoir constructed in 1975.
40008	Great Stour at Wye	230.0	TR04884700	604880.0	147000.0	51°11'07.7926"N 0°55'49.0567"E	51.1855	0.93029	Great Stour	Wye	29.0	EA-KSL	654306001	40	1962-01-01		C VA		2.8	15.1	true	true	true	true	false	false	false	true	false	false	false	false	false	GE	1962-10-01	2023-09-30	2.331	0.148	1976-08-26	1976-08-26	28.3	2000-11-06	2000-11-06	0.53	0.915	1.46	4.92	7.61	0.57	22280	22113	99.25	1960-07-18		19.61	30.6	40.3	69.6	128.4	195.5	751	741	0.1148	0.4738	0.291		0.1105	0.1126	0.4741	0.3103	0.0007	0.0994	0.6322		0.1613	0.2065		0.1021	0.1773	0.34	0.659	0.983	39.1	28.0	33.7	44.0	11.9	35.07	18.66	77	205	0.16	30.6	226.4	1.178	0.825	0.1605	0.0306	0.666	0.715	0.0452	0.804	0.8			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Triangular crump weir (width 7.61m) - drowns at <3 cumecs (no flow adjustment) and velocity-area station throughout the peak flow range. Weed growth can cause overestimation of flows.	Triangular crump weir (width 7.61m) - drowns at <3 cumecs (no flow adjustment). Velocity area station (just downstream) for high flows. The River Stour is wide & shallow at the gauging station, the floodplain is limited by the railway line. Previously a broad crested weir (1960-62) which was subject to premature drowning frequently due to weed growth and the low design of the weir sill.	The weir conforms to British Standards up to 0.3m stage. Wye Bridge contains 5 arches with secondary arches between the river & railway line to accommodate very high flows. Bank is overtopped at 1.65m stage, flow contained in floodplain to 1.85m stage. Inspection of the gauge in 2002 for a rating review suggests a secondary flow path upstream of Wye Bridge possibly results in flow through the secondary culverts, bypassing the gauge. Weed growth can cause overestimation of flows. Siltation also an issue. In 1962, sill was raised and the downstream section was dredged approx. 23cm. It was proposed to clear the weed annually to prevent further drowning, however conservation concerns have halted this in recent years. Peak flow rating beyond 0.8m derived from hydraulic modelling, confirmed with gaugings to 1.6m.	Low confidence in this site. Data reprocessed in 2010; summer 2007 high flows significantly modified, 2000 flows added. 1976 drought minimum (lowest flow on record) estimated. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	The east and west branches of the River Stour flow over impermeable (mainly) Weald Clay; below Ashford (the only major settlement). Catchment is half-and-half impervious and pervious. A rural catchment with mixed land use.	M20 motorway & Channel Tunnel rail link are increasing the development pressures on the catchment. Effluent from Ashford is a significant component of low flows; small net import of water. Flood retention reservoirs above Ashford (constructed 1990-2). Hydrographs show evidence of upstream mill sluice operation (declining); regulation in early records from Wye Mill 160m upstream. The catchment exhibits little storage.
40009	Teise at Stonebridge	136.2	TQ7178939960	571789.0	139960.0	51°07'59.3354"N 0°27'14.1795"E	51.13315	0.45394	Teise	Stonebridge	24.5	EA-KSL	453230001	40	1961-01-01		FV	50.0	11.4	22.1	true	true	true	true	false	false	false	true	true	false	false	false	false	RPGE	1961-10-01	2023-09-30	1.377	0.019	2005-02-16	2005-02-16	57.3	2000-10-12	2000-10-12	0.232	0.634	0.872	2.58	4.33	0.46	22645	22220	98.123	1960-08-01		24.883	25.7	53.4	91.7	133.5	202.4	809	812	0.3338	0.1904	0.3702	0.0003	0.0746	0.2806	0.2222	0.4502	0.0004	0.0195		1.0					0.0356	0.36	0.443	0.904	78.4	42.65	35.0	47.9	11.8	23.0	12.89	93	50	0.11	25.8	134.5	0.487	0.755	0.0413	0.0049			0.0124	0.751	1.259	1959..1994	1960-08-01..1975-12-31	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir (commissioned Sep 1995), superseded broad-crested weir. Significant baseflow regime but also responsive.	Flat V weir 7m wide, located 50 m d/s of a minor road bridge between Horsmonden and Brandfold, in a relatively straight approach. Station used as control point for Bewl Water Reservoir (offtake is ~1km upstream), data inspected regularly by Southern Water. Superseded broad-crested weir (crest width: 5.95m; weir capacity: ~3 cumecs) in trapezoidal section.	Weed growth can cause problems and no high flow gaugings pre-1995. Crest tapping no longer used. Cableway at site - calibration now extends throughout the flow range (but less reliable above bankfull); gauging of 54 cumecs after Oct 2000 peak. Two peak flow ratings applied across period of record, the most recent is valid from September-1995 when new structure installed necessitating a rating change. Pre-1995 rating valid to bankfull. Post-1995 rating derived from hydraulic modelling and well calibrated to bankfull.	Missing flows July 1994 - August 1995 during construction of new structure. Isolated and anomalous low flows (e.g. 2004) reflect influence of abstractions for Bewl Water. GDF minimum (0.033 cumecs on 16/02/2005) resulted from significant upstream abstraction. POT and AMAX are pre- and post- Bewl Bridge Reservoir (1975), pre-reservoir rejected. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Bewl Water Reservoir constructed 1975, occupies approx. 3% of total catchment area. The River Teise originates to the south east of Tunbridge Wells, and flows east to its confluence with the River Bewl, then north towards the River Medway. Catchment developed on the Wealden Series: comprises Hastings Beds, composed of sandstones, siltstones & clays; Tunbridge Wells Sand, Wadhurst Clay, Ashdown Sand; one quarter impervious, three quarters pervious. The more permeable components are locally important aquifers feeding the numerous springs which provide the baseflow for the headwaters. Catchment is predominantly rural.	Significant baseflow but also responsive. Augmentation (from Bewl Water) dominates post-1975 low flow patterns; e.g. 1989/90. Runoff influenced by public water supply abstraction and effluent returns. Some artificial regulation from Hope Mill Sluice approx. 3.2km upstream.
40010	Eden at Penshurst / Vexour Bridge	224.3	TQ5201243688	552012.0	143688.0	51°10'20.0418"N 0°10'23.0821"E	51.17223	0.17308	Eden	Penshurst / Vexour Bridge	27.8	EA-KSL	453600003	40	1961-01-01		C VA US	60.0	4.3	18.3	true	true	true	true	false	false	false	true	false	false	false	false	false	SE	1961-10-01	2023-09-30	1.772	0.031	1962-09-14	1962-09-14	164.0	1968-09-15	1968-09-15	0.227	0.401	0.637	4.191	7.55	0.35	22645	21671	95.699	1961-10-01		24.4	26.7	47.5	72.0	130.7	267.7	764	742	0.2193	0.2566	0.4051	0.0001	0.0988	0.1684	0.2642	0.4937	0.0004	0.064	0.1596	0.2945	0.5114	0.0345	0.0383	0.0115	0.0296	0.35	0.424	0.92	47.4	41.2	32.9	44.1	11.4	35.7	21.25	82	136	0.11	29.4	224.41	0.967	0.92	0.1103	0.016	0.556	1.225	0.0334	0.797	1.218	1972..1979		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combined flow series from two separate stations Penshurst (low flows) and Vexour Bridge (high flows). Gauges a predominantly impervious catchment with some settlements.	Combination of low flows from Penshurst (Flat V weir) and high flows Vexour Bridge (time of flight ultrasonic) 3km upstream. Out of bank flows at Vexour calculated via high flow rating when stage rises above 3.3m at Vexour. The ultrasonic gauge was installed in 2003 to quantify hysteresis effects due to water impoundment at the Leigh Barrier (13 km d/s).	The River Eden is a meandering channel where bank erosion and accretion continually change the channel morphology. Some siltation problems within measuring channel at Ultrasonic station affecting lower paths. All but exceptional flows contained. Rating is a good fit to gaugings (not held because flows are combined from Penshurst and Vexour). High confidence to bankfull (large number & range of flow gaugings), reasonable confidence above.	Post-1995 low and high flows combined (with adjustment for catchment area) but combination of earlier gauged daily flows is incomplete. Evidence of draining and refilling Hever Castle lake in daily flow record - e.g. March 2014 and September 2016. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Catchment developed on sands and clays of the Wealden Series - impervious types predominate. Includes mostly Weald Clay and Upper and Lower Tunbridge Wells Sand, with the remainder made up of Upper Greensand, Ashdown Sand, Folkestone Beds, Sandgate Beds, Hythe Beds, and Atherfield, Grinstead, Gault and Wadhurst Clays. Resulting in a responsive flow regime in a small baseflow supported from the Upper Greensand. Predominantly rural catchment with scattered settlements including Edenbridge, Godstone, Lingfield and East Grinstead (which occupy approx. 3% of the total catchment area). With a catchment area u/s of Penshurst of 224km2, with Penshurst G/S only 2.8km U/S of the confluence with the River Medway.	Large areas of on-field storage exist during flood events, floodplain is approx. 400m wide at the gauge site. Offtake for Bough Beech Reservoir is upstream - occupying <1% of the total catchment area, it causes a small net export of water but does not operate during summer periods. Some slight regulation by Hever Castle Lake 3.2km upstream. Leigh Flood Barrier, constructed 1981, d/s can cause some hysteresis at the gauge. Consists of a flood storage reservoir capable of retaining up to 5.58 million cubic metres of water and is the largest on line flood storage reservoir of its kind in the UK. Vexour Bridge is one of the main flood warning stations used for input to the Leigh Barrier. Possible change in channel dimensions over time. Large areas of on-field storage exist during flood events (floodplain is approx. 400m wide at the gauge site).
40011	Great Stour at Horton	345.0	TR1154955356	611549.0	155356.0	51°15'29.1674"N 1°01'49.8291"E	51.2581	1.03051	Great Stour	Horton	12.5	EA-KSL	654400001	40	1964-01-01		B VA		46.0	9.5	true	true	true	true	false	true	true	true	true	true	true	true	true	GE	1964-10-01	2023-09-30	3.205	0.503	1997-10-01	1997-10-01	30.9	2000-11-07	2000-11-07	1.03	1.65	2.26	6.22	8.86	0.7	21549	21549	100.0	1964-07-01		19.664	12.5	40.1	75.5	147.0	195.5	761	748	0.1529	0.4723	0.2833		0.0825	0.1597	0.4642	0.3003	0.0013	0.0714	0.7354		0.107	0.1576		0.165	0.152	0.34	0.706	0.965	50.9	25.41	34.4	45.4	12.0	49.67	26.05	84	187	0.04	12.5	341.26	0.925	1.056	0.1212	0.0227	0.634	1.0	0.0321	0.793	1.079	1963..1975		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested weir in trapezoidal section plus a Velocity-Area section for flows >20 cumecs.	Broad-crested weir (width: 10.55m, insensitive) in trapezoidal section plus a velocity-area section for flows >20 cumecs. There is a confluence 0.2 km upstream of the gauge, upstream of which the Stour flows through multiple channels.	The weir is British Standard horizontal and broad crested, both upstream and downstream faces having a rounded nose; however, non-standard 0.02 m height variation along the crest width (1.8m). Flow is contained by sloping side bunds, with no wing walls. Throughout the record the station has never gone out of range at the weir, however a 2002 station review revealed secondary flow paths along the public footpath between the channel and sewage ponds. Problems with downstream channel erosion at the end of the concrete structure, resulting in a local channel widening of approx. 2m. Electromagnetic gauge installed 1992 but rarely used as weir rating is so reliable. Theoretical rating endorsed by gaugings. Two peak flow ratings applied across period of record, the most recent is valid from January-1969. Current rating reliable; derived from a modified theoretical weir equation and valid to 1.5m when flow is out of bank.	Intermittent discharge noted in files (1965) from a water wheel on a controlled tributary stream. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	The east and west branches of the Stour flow over Weald Clay; below the confluence (at Ashford - the only significant urban area). Chalk dominates, also Gault Clay, Folkestone Beds, Sandgate Beds, Hythe Beds, Weald Clay. Remainder London Clay, Woolwich Beds, Thanet Beds, Atherfield Clay. A rural catchment with mixed land use; Ashford is the only significant urban area. M20 motorway and Channel Tunnel rail link are increasing the development pressures on the catchment. River bed is open textured gravel of considerable depth, which is a feature of the River Stour from Wye to Canterbury.	Substantial baseflow but relatively flashy storm response. Very modest net impact of artificial influences on runoff (import of 0.03 m3/s in 1998). Modest public water supply and irrigation abstractions in lower valley - some counterbalancing due to small amounts of effluent (from outside catchment). Considerable abstractions from boreholes within 8km upstream and downstream (started 1968/1969). Station adjacent to sewage treatment ponds and in extreme events could spill into the ponds. Upstream regulation from Chartham Paper Mills (0.8km upstream) evident on hydrographs. Runoff increased by effluent returns. Flood storage reservoirs (Hothfield & Aldington), constructed above Ashford (1990-92). In 1968 a number of water pumping stations opened on the River Stour, namely Chilham and Chartham pumping stations. Upstream mill regulation evident in hydrographs.
40012	Darent at Hawley	191.4	TQ5522271842	555222.0	171842.0	51°25'27.6087"N 0°13'52.2946"E	51.42434	0.23119	Darent	Hawley	11.2	EA-KSL	451321001	40	1963-01-01		C		27.0	85.0	true	true	true	true	false	false	false	true	false	false	true	false	false	G	1963-12-01	2023-09-30	0.665	0.0	1967-09-11	1997-10-25	11.9	1968-09-16	1968-09-16	0.047	0.301	0.513	1.37	1.825	0.74	21854	21854	100.0	1963-10-01		2.806	9.5	57.0	112.4	185.7	250.1	738	729	0.2345	0.2836	0.3003	0.0003	0.1706	0.211	0.3362	0.3247	0.0027	0.1178	0.8357	0.012		0.1523	0.0055	0.1524	0.0375	0.29	0.833	0.926	71.2	16.07	33.7	45.1	11.7	34.86	19.13	117	14	0.16	9.6	187.31	0.336	0.897	0.0407	0.0416	0.661	0.822	0.0664	0.812	0.905	1979		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir gauging a Chalk catchment with increasing groundwater abstractions over time.	British Standard Crump weir, crest width 7.62 m; concrete channel tapers in from the right bank resulting in narrowing d/s. Straight approach in bridge invert, canalised section d/s follows a gentle right hand curve. Modular to bankfull.	Large structure capacity but bypassed (right bank) during extreme flood of Sep 1968 (flow estimated at ~50 cumecs). Station is immediately d/s of a road bridge which may impede flows once the soffit level (1.21 m stage) is exceeded. Possible summer weed growth problems. Crest width may be restricted during periods of low flow to increase sensitivity. One peak flow rating applied across period of record.	Influent upstream; flows commonly lower than at Lullingstone (40018). Augmentation pumps affected flows 08/08/2007 to 04/12/2007. Between 21/09/1972 - 09/11/1972 a temporary structure was erected on the weir, and in the past temporary stop boards have been used to increase low flow sensitivity. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The River Darent is a 32km long chalk stream. A mainly pervious (Chalk and Lower Greensand) catchment with some sand/clay; Blackheath Beds 1%, Thanet Sand 3.9%, Upper Chalk 33.8%, Middle Chalk 10%, Lower Chalk 7.6%, Upper Greensand 0.2%, Gault Clay 11.3%, Folkestone Beds 11.4%, Sandgate Beds 4.4% Hythe Beds 15.9%, Atherfield Clay 0.5%. Predominantly rural with some expanding urban centres. Maximum altitude of catchment 246mAOD.	Changes in groundwater abstraction and Darent Augmentation Scheme have altered the regime and character of the Darent through time. New road bridge directly over gauge may have been installed after the gauge. There have been changes in flood banks and floodplains since 1968 floods. Construction of M25 and A2. Office developments. Sluices and abstractions to and returns from gravel workings upstream affect flow - evident at low flow (e.g. Oct 1989). Baseflows were greatly reduced by increasing ground water abstractions, but the Darent Augmentation Scheme now operates and supports baseflow in the Darent. Abstraction at Brasted, Sundridge, Lullingstone and Eynsford boreholes have been phased out or reduced and down-gradient abstractions located further from the river increased to compensate. The Darent Augmentation Scheme uses 3 boreholes to augment flows to support ecology in the river during dry conditions. Some artificial regulation by u/s mills/sluices in the past. Gravel washing may extract water, used to wash during the day and release water at night.
40013	Darent at Otford	100.5	TQ5249758426	552497.0	158426.0	51°18'16.3105"N 0°11'10.6105"E	51.30453	0.18628	Darent	Otford	60.0	EA-KSL	451332001	40	1969-01-01		CC			20.0	true	false	false	false	false	false	false	false	false	false	false	false	false	G	1969-02-04	2023-09-30	0.694	0.051	1991-09-20	1991-09-20	23.6	2014-01-17	2014-01-17	0.136	0.284	0.421	1.25	1.993	0.56	19962	19953	99.955				60.0	82.9	133.5	194.9	250.1	782	771	0.2758	0.2232	0.2844	0.0001	0.2024	0.2671	0.2676	0.3228	0.005	0.1274	0.7503	0.0228		0.2269		0.1229	0.0163	0.36	0.8	0.909	70.7	18.09	34.3	46.7	11.7	15.87	7.96	136	31	0.09	60.0	98.19	0.313	0.722	0.0394	0.0405	0.608	0.628	0.0739	0.829	0.654			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir in baseflow-dominated catchment, but responsive to storms. Removed from Peak Flow Dataset in September 2022 (WINFAP Files v11).	Compound Crump profile weir; main crest width 3.04m with two side crests each 2.286m; crest tapping and u/s, d/s gauge boards. Relatively straight reach with a bend 30 m d/s. Floodplain is extensive on the right bank, but narrow on the left. Replaced velocity-area station in 1969.	Modular limit between 3 and 10 m3/s; central section may become non-modular at very different stage to outer sections. Structure drowns completely before bankfull. Reliable over full range. Structure width exceeds natural channel width, in the past this has caused bank encroachment and upstream accretion of berms with mature weed growth. This reduced area of approach influences weir performance, possibly causing stilling well lag, which is exacerbated by poor velocity distribution in approach section. Berms encroach on approach section almost to the divide piers. Silting can occur on d/s slope of central crest. D/s levels affected by summer weed growth. Channel was dredged in 1967 by 0.3m. Bypass channel constructed 1964 around one of the principal gravel workings to reduce the siltation load. Peak flow rating reviewed in 2002 and applied to full record. Accounts for drowning & extended to include levels above wing wall height. Rating deviates from gaugings beyond 0.2m.	Data since January 2014 is highly erroneous due to downstream weeds causing a backup of water and non-modular conditions during the majority of the year. With no way to identify the significant and variable modular limit, flow data from this site should not be used until channel conditions can be improved. POT data only from April 1990 - prior to this daily mean flows available from February 1969, but no daily maxima. 2000 event gaugings taken from the road bridges in Otford High Street, as the channel splits into two branches downstream of the gauging station. September 1968 floods estimated at 23 m3/s. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A mainly pervious catchment, made up of Lower Greensand (60%), with considerable areas of Gault (25%) and Chalk (15%) u/s of station. Baseflow almost entirely from Folkestone Beds of the Lower Greensand. Runoff from Gault during heavy rainfall. Responsive regime (for a pervious catchment). Predominantly rural with some expanding urban centres, including Sevenoaks and Westerham.	Baseflow-dominated regime but responsive to storms. Upstream groundwater abstractions, which showed a substantial historical increase, have been reduced - helping increase flows during dry periods. New roads constructed late 1960s (M25), have greatly influenced runoff. Minor regulation by 'Morley' (a tile company) (1988). The River Darent flows through a number of gravel pits upstream of station, which have a balancing effect on flood flows. Backwater effects caused in the past by Otford Mill and a drainage culvert which passes beneath river channel 0.91km downstream of the station.
40014	Wingham at Durlock	37.7	TR2755457585	627554.0	157585.0	51°16'19.0374"N 1°15'39.3206"E	51.27195	1.26092	Wingham	Durlock	4.1	EA-KSL	654620001	40	1969-01-01	2007-04-09	VN		0.1		true	false	false	false	false	false	false	false	false	false	false	false	false	E	1969-08-01	2007-04-09	0.022	0.0	1976-06-27	2004-06-02	2.24	1973-09-21	1973-09-21	0.001	0.005	0.008	0.043	0.072	0.4	13766	10926	79.369				7.6	17.2	55.8	106.2	135.4	743	729	0.0885	0.667	0.2051		0.0371	0.0941	0.7486	0.1203	0.0029	0.0342	0.7957			0.2043		0.0108	0.2471	0.34	0.809	0.999	34.6	19.56	34.2	48.5	12.2	16.98	9.84	59	24	0.3	7.6	30.73	0.431	0.632	0.0799	0.0186	0.506	0.719	0.0143	0.58	0.736			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	120 degree V-notch weir; capacity of notch ~0.09 cumecs.	Station closed in 2007.	Drowns for extended periods - poorly maintained downstream channel subject to blockage after high flows. Site suffers from weed and silt drowning out the weir during the summer months.		Mainly Chalk - overlain in parts by Drift - plus Tertiary deposits; baseflows derive from the Thanet Sands. Predominantly rural embracing the village of Ash.	Sewage effluent is a very minor flow component. Topographical catchment substantially exceeds the contributing area.
40015	White Drain at Fairbrook Farm	31.8	TR0546960732	605469.0	160732.0	51°18'30.9596"N 0°56'47.7074"E	51.3086	0.94659	White Drain	Fairbrook Farm	7.6	EA-KSL	652421001	40	1969-01-01	2009-12	FL			16.4	true	false	false	false	false	false	false	false	false	false	false	false	false	E	1969-11-01	2009-12-31	0.056	0.0	1997-08-11	1997-08-11	2.8	2008-01-15	2008-01-15	0.009	0.02	0.031	0.102	0.161	0.52	14671	13678	93.232				7.0	31.3	80.5	122.2	172.8	739	721	0.1474	0.4799	0.3129		0.0552	0.1986	0.4396	0.323	0.0016	0.0371	0.5294			0.4706		0.2239	0.1666	0.32	0.652	0.999	52.0	31.67	34.2	43.6	12.3	13.03	6.08	79	348	0.4	7.0	31.4	0.153	0.722	0.0251	0.0102	0.435	0.734	0.018	0.667	0.762			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume designed for modular operation.	Principally a low flow station. Occasional overtopping onto wide alluvial floodplain. Calibration limit ~2.7 cumecs.	Flume tends to silt up, also blocking of stilling intake (e.g. in autumn 2000) - impacting on computed flows.	High flow event in Oct 2000 under review.	Mixed geology: Chalk and Lower London Tertiaries provide baseflow, surface runoff from the London Clay.	Runoff diminished due to groundwater abstraction from the Chalk. Sewage effluent - discharging 1km upstream - formed a major component of low flows until 1991 (treatment now undertaken outside catchment).
40016	Cray at Crayford	119.7	TQ5105974556	551059.0	174556.0	51°26'59.4426"N 0°10'21.0706"E	51.44985	0.17252	Cray	Crayford	6.3	EA-KSL	451220001	40	1969-01-01		FV			27.8	true	true	false	true	false	false	false	true	false	false	true	false	false	G	1969-07-01	2023-09-30	0.494	0.001	1973-09-14	1973-09-14	13.4	1977-08-27	1977-08-27	0.128	0.294	0.405	0.886	1.12	0.73	19815	19686	99.349	1969-06-27		8.152	7.0	35.2	80.1	181.9	249.9	689	694	0.1837	0.1786	0.2354	0.0007	0.3974	0.1327	0.1868	0.3017	0.0007	0.3764	0.4842			0.5158	0.0572	0.1811	0.0179	0.27	0.856	0.945	45.6	14.51	34.0	43.7	11.4	24.1	12.54	98	11	0.26	7.1	123.5	0.283	0.706	0.0507	0.1796	0.837	0.696	0.2607	0.892	0.694	2010		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound weir with Larinier Fish Pass on lower crest accompanied by larger Flat-V.	Compound structure. Low flow Larinier on left bank has width of 1.5m. Larger Flat-V has width of 9.120 and a crest of 6.449mAOD. Eel tiles also present inside right bank wing wall. Site was rebuilt in 2015. Previously asymmetrical compound Crump profile weir; left bank weir width 3.052m, right bank weir width 7.612 m. The weirs are separated by a 0.23m wide concrete wall and are both contained within wing walls. Located in a very straight reach with some bank encroachment especially in weeded section immediately upstream of the tapping pipe outlet. Crests frequently vandalised.	Modular limit ~6 cumecs, occasional drowning. The right bank floodplain is of a lower elevation than the weir crest, however the limits of sections taken up to 840m upstream indicate that no significant bypassing would occur under most flows. Weed growth was a problem before structure was rebuilt. Significant structural instability is an issue. Two peak flow ratings applied across period of record, although no gaugings above 0.3m to confirm rating.	Missing data 01/07/2015 to 06/11/2015 due to station re-build. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A mainly pervious (Chalk) catchment; the Cray flows in an alluvial tract which has been widely exploited for gravel/sand. Urban land use is extensive and increasing particularly in the lower catchment. Urban land use is significant. Chalk outcrops over a quarter of the area and is covered by permeable drift deposits, producing little or no surface runoff. Lower London Tertiaries comprising Blackheath Beds, Woolwich Beds, London Clay & Thanet Sands, overlie the chalk in the northern basin, occupying around half of the area. These are relatively impermeable deposits, producing some runoff. Mostly pervious catchment. The river appears as chalk springs in Orpington 8km north of the gauging station. During prolonged dry periods the flow virtually ceases.	Major baseflow component but responsive to storms. Flows are substantially affected by artificial influences; surface and groundwater abstractions, storm water overflows and extensive local gravel workings. Considerable net export of water & diminution of runoff. River flows in alluvial tract which has been widely exploited for gravel/sand.
40017	Dudwell at Burwash	27.5	TQ6785524005	567855.0	124005.0	50°59'27.4925"N 0°23'25.3251"E	50.99097	0.39037	Dudwell	Burwash	27.6	EA-KSL	556521001	40	1969-01-01		C			54.0	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1971-01-01	2023-09-30	0.337	0.014	1981-10-07	1981-10-07	18.26	1979-12-27	1979-12-27	0.053	0.085	0.139	0.659	1.16	0.42	19266	17810	92.443				28.8	61.6	115.1	160.0	192.4	906	888	0.3909	0.0779	0.4761		0.0495	0.3264	0.1108	0.5547		0.008		1.0						0.35	0.432	0.994	104.8	43.89	36.7	49.1	11.5	11.38	6.53	113	119	0.06	28.8	26.29	0.329	0.665	0.0286	0.005	0.006	0.051	0.0095	0.591	1.096			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir. Patchy records for 1970's and 1980's. Removed from Peak Flow Dataset in September 2022 (WINFAP Files v11).	Crump profile weir (crest: 4.88m) in straight reach, containing an energy dissipator and crest tapping (not used). Between 1967 and 1968 a temporary rated section was in place to monitor flows prior to the construction of the permanent station. This station had a 3m range and produced monthly charts.	Few gaugings at high flows. Trash may gather in energy dissipator. Steep banks contain all but exceptional flows. Wide and flat floodplain. Bypassing at stages >1m; maximum recorded stage significantly above bankfull. Modular limit 6.259 m3/s. One peak flow rating applied across period of record, does not take account of bypassing or drowning.	Some truncation of peaks around modular limit (~6 cumecs). Data are not presented for the earlier station. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A relatively steep catchment draining from the High Weald. Geology: mostly Ashdown Sands (variable permeability) with Purbeck Sands, Wells Sands, Wadhurst Clay; catchment predominantly pervious. River Dudwell forms a tributary to the River Rother. A largely rural catchment with significant woodland and scattered settlements.	Responsive and essentially natural flow regime - to within 10% at Q95. The station is high in the headwaters.
40018	Darent at Lullingstone	118.4	TQ5302964280	553029.0	164280.0	51°21'25.1530"N 0°11'47.1086"E	51.35699	0.19642	Darent	Lullingstone	44.1	EA-KSL	451320001	40	1968-01-01		CB			38.0	true	true	true	true	false	false	false	true	false	false	false	false	false	G	1969-02-01	2023-09-30	0.743	0.015	1976-07-14	1976-07-14	10.4	2014-01-17	2014-01-17	0.162	0.396	0.586	1.41	1.88	0.74	19965	19696	98.653	1964-06-01		3.567	42.3	74.9	127.5	190.5	250.1	770	762	0.2693	0.2424	0.2943	0.0002	0.1815	0.2596	0.2758	0.3354	0.004	0.1163	0.7935	0.0183		0.1882		0.1523	0.0307	0.32	0.814	0.906	73.3	17.12	34.3	46.4	11.7	23.69	13.66	129	45	0.1	43.5	122.24	0.365	0.818	0.0436	0.0352	0.592	0.906	0.0651	0.819	0.915	1989..2010		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three bay, non-standard broad-crested weir at the outfall of an ornamental lake in the grounds of Lullingstone Castle.	Three bay, non-standard broad-crested weir, each bay approx. 3-4m wide, total crest width 11m. Channel bends downstream of structure.	Inlet approx. 300m across lake (hence stage range is limited). Substantial fall downstream hence always modular. Relatively insensitive, stop boards fitted in past (1965-68) to confine flow to one bay and increase low flow sensitivity. Pressure transducer for flood telemetry. Reasonable flow figures but Otford is a more reliable site for gauging the River Darent. Wind fetch and storage at Lullingstone Lake possibly affect levels. Two peak flow ratings applied across period of record.	1968 flood greatly exceeded subsequent maxima. Significant period of missing data from Feb - Nov 2009 attributed to re-design and re-build of gauging station. Recorder lost during 1968 floods and no estimate made, flow would have been of same order as at Otford (approx. 23 m3/s). Stop boards present Sept 1965 - Jul 1968; no account of stop boards taken by rating, therefore data prior to 1968 is regarded as of poorer quality. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Catchment is predominantly pervious (Chalk). Mixed land use: agricultural with woodland plus expanding urban centres in the headwaters (including Sevenoaks). Some water meadows upstream (e.g. at Shoreham).	Baseflow-dominated regime. Baseflows were previously greatly diminished by major groundwater abstractions but augmentation scheme now operates (Lullingstone augmentation borehole upstream). Some channel losses also where the Darent is influent downstream of Lullingstone. Stage range is limited by the storage capacity of Lullingstone Lake. Sewage outflows from Sevenoaks now piped direct to Dartford.
40020	Eridge Stream at Hendal Bridge	53.7	TQ5218736570	552187.0	136570.0	51°06'29.6217"N 0°10'21.2685"E	51.10823	0.17257	Eridge Stream	Hendal Bridge	41.5	EA-KSL	453520001	40	1973-01-01		FV		2.2	20.2	true	false	false	false	false	false	false	true	false	false	false	false	false	E	1973-07-02	2023-09-30	0.827	0.063	1976-08-27	1976-08-27	23.7	1974-11-21	1974-11-21	0.119	0.222	0.381	1.695	2.73	0.44	18353	17051	92.906				40.4	72.1	121.1	165.2	241.7	879	867	0.3271	0.1124	0.3838		0.1657	0.2694	0.1772	0.4658		0.0852		1.0					0.0167	0.36	0.451	0.969	89.3	42.52	35.6	47.8	11.8	16.51	9.19	121	3	0.1	40.4	52.74	0.318	0.67	0.0276	0.0258	0.609	1.459	0.0574	0.835	1.407			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Triangular profile Flat-V weir, constructed summer 1983, which superseded a velocity area station. Station is one of control points for Medway barrage. A temporary station was installed in late spring 1992, 250m downstream of Eridge railway station; removed Nov/Dec 1992.	Triangular profile flat V weir (width: 5.6m) superseded velocity-area station (data: 1973-83). Modular limit 1.89 m. Weir is 50 m downstream of B2188 road bridge, previous station was upstream of this bridge. Station located approx. 2km upstream of the confluence with the River Medway. Removed from peak flows dataset in February 2018 (WINFAP Files v6).	Out of bank conditions have not been witnessed at this site and no bypassing occurs. Significant u/s accretion can influence medium & high flows. Good fall off crest, Modular limit ~1.9m. Theoretically rated, high flow rating not defined. Most of the gaugings are for the original VA station, therefore don't fit rating curve. One peak flow rating applied across period of record. Rating extended with ISIS model for out of bank. Single valid high flow gauging taken in 1981 (1.3m, 7m3s-1) casts doubt on rating form.	Patchy record prior to 1986.	Catchment drains Wealden area of Sussex/Kent, encompassing Hastings Beds, Tunbridge Wells Sand, Wadhurst Clay and Ashdown Beds. Catchment is impervious (one quarter) and pervious (three quarters). Rural, mainly agricultural land use with some woodland. The Eridge Stream rises at an elevation of over 200m at Saxonbury Hill, and flows in a north westerly direction.	Responsive regime. Runoff increased by effluent returns. A number of old mill sluices exist on the stream and an artificial lake in Eridge Park with a sluice outlet (6.07 hectares). None of these sluices are believed to be operational. Locally important aquifers feed numerous springs which provide baseflow for the headwaters.
40021	Hexden Channel at Hopemill	32.4	TQ81332902	581330.0	129020.0	51°01'54.9710"N 0°35'04.8287"E	51.03194	0.58467	Hexden Channel	Hopemill	5.2	EA-KSL	556710001	40	1973-01-01		FL		7.3	23.3	true	true	false	true	false	false	false	false	false	false	false	false	false	E	1975-02-01	2023-09-30	0.321	0.001	1995-07-30	1995-08-12	10.68	2020-03-05	2020-03-05	0.032	0.073	0.136	0.719	1.226	0.44	17774	15319	86.188	1974-01-03		14.286	8.9	26.4	65.9	103.0	140.8	778	778	0.2515	0.2645	0.4066		0.0637	0.231	0.3289	0.4181	0.0026	0.0185		1.0					0.0162	0.35	0.406	1.0	76.0	43.92	36.4	48.4	11.9	12.84	7.04	64	134	0.22	8.9	32.09	0.399	0.626	0.0351	0.0074	0.482	1.064	0.0126	0.724	1.009	1980		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume.	Structure capacity 2.25 cumecs, channel capacity is considerably greater but bypassing on left bank. Station added to peak flows dataset in September 2022 (WINFAP Files v11).	Power law rating in three sections. Records indicate it is based on hydraulic theory for a trapezoidal flume. Site is difficult to gauge at high flows due to the flashy nature of the catchment.	WY1980/1981 rejected because it was likely to have occured during period of missing data.	A relatively narrow catchment trending SE from headwaters in the High Weald (source is in Bedgebury Forest). Rural land use, some woodland - developed on Wadhurst Clay (about half) and the overlying Tunbridge Wells Sands.
40022	Great Stour at Chart Leacon	72.5	TQ9922942280	599229.0	142280.0	51°08'42.3754"N 0°50'48.9412"E	51.1451	0.84693	Great Stour	Chart Leacon	39.5	EA-KSL	654110001	40	1967-01-01		FV				true	true	false	true	false	false	false	false	false	false	false	false	false		2001-01-01	2023-09-30	0.679	0.048	2022-08-14	2022-08-14	6.21	2014-02-14	2014-02-14	0.107	0.215	0.362	1.57	2.62	0.57	8308	8229	99.049	1967-03-20		5.118	39.5	54.2	84.8	137.5	195.5	736	726	0.1137	0.5307	0.2365		0.1133	0.1128	0.5281	0.3003	0.0019	0.0555	0.7894		0.0427	0.1679		0.1224	0.1259	0.34	0.744	0.967	40.9	23.3	33.3	42.9	11.9	22.81	12.5	91	184	0.34	39.6	66.96	0.724	0.764	0.0924	0.0128	0.473	0.848	0.0348	0.718	0.874	1978		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir affected by vegetation and siltation problems and some upstream regulation.	Flat V weir (7.96m broad; shallow approach depth - modular limit >0.217m) superseded - in 1979 - a velocity-area station (level records from 1967). The VA station was installed to provide design data for future structure; was subject to vegetation problems. Gauge is located 3.5km upstream of the confluence with the East Stour.	The weir does not conform to British Standard as the downstream slope is inadequate and the approach channel is not straight and uniform. Flow becomes non-modular at stages. The low modular limit, Singleton Lake outflows and backwater effects from the B2229 road bridge hinder the gauges effectiveness at high flows. Vegetation and channel siltation problems, the latter possibly caused by concrete energy dissipation blocks downstream of the gauge. The 2002 review suggests that these may reduce the effectiveness of the gauge at moderate flows due to the already limited drop off of the weir outflow from Singleton Lake will impact flow over the weir. Gaugings taken by wading with rods, which can result in an underestimation of flow through the gauge. Theoretical ratings, velocity-area calibration for high flows - but wide uncertainty band. Two peak flow ratings applied across period of record. Most recent rating extended to 1.8m by hydraulic modelling but low confidence beyond 1.13m as out of bank.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	A largely impervious catchment, with mostly Clay soils, but some baseflow from the North Downs, trending south east towards Ashford. Rural grazing with some woodlands urban development near to station. M20 motorway & Channel Tunnel rail link are increasing the development pressures on the catchment.	Some upstream regulation: Hothfield flood retention reservoir upstream has a major impact on flood flows - designed to limit d/s flows to <6 m3/s. Spill into Singleton Lake (200m upstream), occurs at high flows with inflow to the river approximately 20m upstream gauged via a flapped outlet. Spills into Singleton Lake are unlikely to bypass the gauge.
40023	East Stour at South Willesborough	58.75	TR0151340704	601513.0	140704.0	51°07'48.5469"N 0°52'43.1646"E	51.13015	0.87866	East Stour	South Willesborough	34.8	EA-KSL	654210001	40	1979-01-01		FV			25.0	true	false	false	false	false	false	false	true	false	false	false	false	false	E	1975-12-31	2023-09-30	0.627	0.0	1976-06-09	1976-07-01	17.33	2001-02-06	2001-02-06	0.06	0.156	0.309	1.61	2.446	0.48	17441	17288	99.123				38.5	48.2	76.7	123.5	186.5	780	766	0.0783	0.5313	0.3421		0.0428	0.059	0.5594	0.3431		0.0366	0.7072		0.125	0.1677		0.0801	0.2348	0.34	0.64	0.997	42.8	29.14	34.0	46.1	11.9	21.29	12.29	82	247	0.2	38.5	60.32	1.019	0.672	0.1293	0.0103	0.474	0.891	0.015	0.653	1.01			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir, 1:10 cross-slope, superseded a Velocity-Area station.	Flat V weir, superseded a Velocity-Area station.	Theoretical rating - to 5.3 cumecs (under review). Improved downstream conditions have increased modular range. Almost all flows contained but flood alleviation scheme truncates peaks. Mill sluice operation and, from 1990, flood retention reservoirs provide a degree of regulation.	Affected by weed-growth in 1976.	A rural catchment, developed mostly on clay. Significant land use change from the late 1980s (industrial / commercial development, by-pass etc) above Ashford.	Runoff increased by sewage effluent.
40024	Bartley Mill St at Bartley Mill	25.1	TQ6326935669	563269.0	135669.0	51°05'49.5105"N 0°19'49.2077"E	51.09709	0.33034	Bartley Mill St	Bartley Mill	56.8	EA-KSL	453233001	40	1958-01-01		B		10.0		true	false	false	false	false	false	false	false	false	false	false	false	false	E	1974-07-01	2023-09-30	0.339	0.03	1976-09-07	1976-09-08	9.504	1979-12-27	1979-12-27	0.049	0.085	0.148	0.8	1.231	0.46	17989	9978	55.467				55.4	80.0	119.1	152.7	202.4	865	865	0.4412	0.1094	0.3804		0.0668	0.3131	0.1243	0.5337		0.0283		1.0					0.0046	0.36	0.446	0.997	98.5	42.76	36.2	48.8	11.8	7.96	4.43	117	43	0.16	55.6	24.55	0.277	0.599	0.0252	0.0055	0.486	1.148	0.0174	0.808	1.103			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested weir with low flow notch. Station discontinued in 1981 but recommissioned in late 1990s.	Broad-crested weir with low flow notch. All flows contained.			A rural catchment in the Weald developed principally on Tunbridge Wells Sands and - in the headwaters - Wadhurst Clay.	Sensibly natural flow regime - responsive but with significant natural baseflow support.
40025	Brede at Brede Pumping Station	45.7	TQ8127917749	581279.0	117749.0	50°55'50.5328"N 0°34'41.9917"E	50.9307	0.57833	Brede	Brede Pumping Station	2.3	EA-KSL	556330002	40	1980-01-01		FL				true	false	false	false	false	false	false	true	false	false	false	false	false		1988-01-04	2023-09-30	0.532	0.011	1988-08-16	1988-08-17	16.33	2023-01-16	2023-01-16	0.039	0.091	0.186	1.16	2.127	0.4	13054	13054	100.0				8.2	20.9	53.1	93.9	162.8	851	824	0.3342	0.2279	0.3589		0.061	0.3762	0.1501	0.442		0.0277		1.0					0.005	0.34	0.469	0.974	78.9	42.23	35.9	47.9	11.5	14.3	7.05	56	130	0.18	8.4	46.49	0.728	0.661	0.071	0.0178	0.539	1.07	0.0182	0.722	1.099			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flume gauging a mixed land use responsive catchment.		New rating curve in 2019 provides confidence across the range using gaugings undertaken at the site.		Small and largely impermeable catchment draining west to east. Mixed land use with significant woodland and scattered settlements. Battle is in the western headwaters.	Responsive regime. Powermill reservoir and abstraction borehole impact on the water balance.
40027	Sarre Penn at Calcott	19.4	TR1739162459	617391.0	162459.0	51°19'10.8498"N 1°07'06.3268"E	51.31968	1.11842	Sarre Penn	Calcott	17.9	EA-KSL	654715002	40	1975-01-01		US				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1975-02-16	2023-09-30	0.101	0.0	1976-06-30	2023-09-30	3.38	2008-01-15	2008-01-15	0.0	0.01	0.026	0.259	0.461	0.31	17759	13170	74.16				17.3	39.7	65.2	94.4	119.2	636	649	0.3859	0.3542	0.1966		0.0599	0.4491	0.3444	0.1613	0.0037	0.0415				1.0			0.0943	0.22	0.295	1.0	38.1	45.2	31.5	41.0	12.2	12.85	5.34	66	74	0.29	17.5	19.59	0.315	0.901	0.0392	0.0108	0.516	1.156	0.0162	0.751	1.116			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station since 2006; superseded Flat-V (glass-fibre) weir, 1:10 cross-slope. Owned by Mid Kent Water.	Ultrasonic station since 2006; Decommissioned in 1994, re-opened in 2006.	Downstream channel control at high flows. Theoretical rating - confirmed by gaugings in low and medium ranges, zero flows possible. Chart recorder only. All but exceptional flows contained, peak flows truncated at ~1.7 cumecs (maximum processed stage).	Patchy flow record prior to 1980.	A mostly rural catchment developed on impervious Tertiary formations (London Clay predominates).	Natural regime.
40029	Len at Lenside	69.7	TQ76295563	576290.0	155630.0	51°16'21.1758"N 0°31'33.2227"E	51.27255	0.5259	Len	Lenside	9.0	EA-KSL	453120001	40	1975-01-01		FV			15.6	true	false	false	false	false	false	false	false	false	false	true	false	false	E	1984-12-20	2023-09-30	0.672	0.048	2022-06-26	2022-06-26	4.44	2002-12-31	2002-12-31	0.307	0.455	0.569	1.107	1.404	0.73	14164	13365	94.359				10.2	50.6	88.7	150.0	202.0	731	709	0.1965	0.3263	0.2633		0.2069	0.1791	0.375	0.2698	0.0006	0.1716	0.6932		0.1278	0.1791		0.153		0.34	0.786	0.917	56.8	21.1	32.9	43.0	12.0	19.61	9.58	94	259	0.18	10.2	69.94	0.346	0.98	0.0472	0.0601	0.718	0.508	0.0893	0.844	0.556			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir, theoretically rated.	Flat V weir, theoretically rated.	Most flows contained but most peaks truncated at ~3.8 cumecs.	Dec 2002 maximum generated by notable storm but flow is indicative only.	Geology: Lower Greensand, Folkestone and Hythe Beds. Predominantly rural land use, although urbanised in lower catchment near confluence with the Medway.	Very little artificial influence in the catchment. There are historical structures controlling the water levels within the stream - an online lake and mill ponds in the top of the catchment - which can be opened for storage before rainfall events. Reliable springs sustain flows through summer months. Effluent returns from Leeds sewage treatment works have major impact on flow pattern.
40033	Dour at Crabble Mill	49.5	TR3004343019	630043.0	143019.0	51°08'24.7070"N 1°17'13.9636"E	51.1402	1.28721	Dour	Crabble Mill	16.3	EA-KSL	654019001	40	1976-01		FV			42.3	true	true	false	true	false	false	false	true	false	false	false	false	false	G	1976-01-06	2023-09-30	0.44	0.023	1990-11-21	1990-11-22	3.01	2001-02-09	2001-02-09	0.107	0.258	0.374	0.805	0.973	0.97	17435	15791	90.571	1966-08-31		1.262	17.9	68.4	130.1	154.0	184.9	847	862	0.1466	0.392	0.377		0.0746	0.1195	0.4014	0.4129		0.0655	1.0					0.5052	0.0923	0.34	0.778	0.958	91.9	22.67	35.9	50.7	12.3	15.86	7.69	120	76	0.21	18.3	44.93	0.13	1.177	0.0224	0.0161	0.479	0.657	0.0335	0.727	0.7	1979..1988	1979-10-01..1984-10-01	gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir, velocity-area station prior to 1984.	Flat-V weir (1:20 cross-slope, capacity: 1 cumec) within concrete berms in brick-lined section, almost all flows contained. Replaced velocity-area station in 1984.	Modular. Most flows contained. Possible changes in bed datum of previous rated section caused by scour; gravel and chalk form the bed substrate. Theoretical rating - extends to 1.59 cumecs; exceeded in Feb/Mar 1995 and in early 2001, when outstanding flows (confirmed by current metering 03/02/2001) reflect record groundwater levels and substantial urban runoff following >40mm storm. Spot gauging of 0.06 cumecs on 05/10/1976 represents good approximation for 1976 drought minimum. One peak flow rating applied across period of record. Large amount of scatter in gaugings.	Data estimated for Jun - Aug 1995. Reprocessing of high flow data carried out in May 2007 following rating review by Peter Brett Associates. Period between 1979 and 1984 rejected because the values were taken from a different site and not reprocessed. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	The Dour is a spring-fed Chalk stream (two main branches) draining to Dover. Rural headwaters but significant urban development in the lower valley above Crabble Mill.	Baseflow-dominated regime. Possible changes to abstractions. Urban fraction of catchment very responsive to notable storms. Runoff reduced by substantial groundwater abstraction. Ornamental lakes upstream.
40035	Old Mill Stream at Aylesford	17.96	TR0235441272	602354.0	141272.0	51°08'05.8438"N 0°53'27.5237"E	51.13496	0.89098	Old Mill Stream	Aylesford		EA-KSL	654220001	40	2003-12-15		VA				false	true	false	true	false	false	false	false	false	false	false	false	false																				2003-12-15		3.891						781	753																		0.34	0.686	0.991	38.3	26.66	33.3	44.3	11.9	10.29	6.0	72	257	0.31	39.4	17.96	0.717	0.763	0.0922	0.0265	0.542	0.489	0.0369	0.798	0.401	2005..2012		pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rated section derived from previous ultrasonic flow gauge.	Site was setup in 2003 as a new flood forecasting site. Flow was measured using an ultrasonic flow gauge with 4 single paths. In March 2020, ultrasonics were replaced with a rating derived from data produced by the ultrasonic gauge. Station added to peak flows dataset in September 2022 (WINFAP Files v11).	Concrete section with vertical walls. Small non-standard structure exists downstream, originally to raise head above lowest transducer path.	Much of the data between 01/07/2004 and 09/01/2013 has been flagged as 'suspect' by the EA due to performance problems with the ultrasonic gauge specifically at low flows. Peaks still appear good and infills have been provided for DMF values where needed. WY2005/2006 and WY2012/2012 rejected as AMAX likely occured during period of missing data.	Predominantly clay catchment, gauge itself in a urban portion of Ashford.	Responsive regime.
41001	Nunningham Stream at Tilley Bridge	16.9	TQ6619312875	566193.0	112875.0	50°53'29.2297"N 0°21'41.8848"E	50.89145	0.36163	Nunningham Stream	Tilley Bridge	3.8	EA-SSD	351221005	41	1950-03-15		CC		8.8	60.0	true	false	false	false	false	false	false	false	false	false	false	false	false	R	1950-03-15	2023-09-30	0.247	0.005	1996-09-17	1996-09-18	11.63	2020-03-05	2020-03-05	0.014	0.033	0.07	0.51	1.01	0.32	26863	26852	99.959				8.8	19.8	46.1	83.6	133.4	770	803	0.1691	0.1482	0.6389		0.0346	0.1426	0.1641	0.6798		0.0125		1.0					0.0027	0.34	0.377	0.999	67.5	44.84	34.9	46.0	11.2	10.66	4.83	49	152	0.22	8.8	17.11	0.595	0.611	0.0671	0.0141	0.605	0.755	0.0129	0.736	0.698			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir.	From May 1981 to November 2005, thin plate weir (insensitive) used in summer to overcome drowning of flume and to increase depth for 'wet fencing' upstream. Thin plate removed in winter and weir used exclusively. Changeover day between winter and summer ratings varied by year; thin plate no longer used.	Frequency of drowning reduced following downstream channel improvements - under non-modular conditions flows estimated using 41002. Since November 2005, thin plate weir not been installed during summer months for environmental reasons and because check gaugings suggest drowning no longer occurs. Currently, weir and corresponding rating in place all year round; accuracy of weir verified in summer. Many peaks truncated at ~9 cumecs; lack of high flow rating at this site. Structure and channel choked by vegetation, extending downstream when flow not sufficient to flush vegetation through.	Early flow records unreliable.	Varied topography developed on Hastings Beds - some permeable strata (Ashdown Sands). Land use is mainly arable with considerable woodland.	Essentially natural responsive regime, although sewage treatment works upstream. Groundwater augmentation during droughts (e.g. 1989/90).
41002	Ash Bourne at Hammer Wood Bridge	18.4	TQ6840514145	568405.0	114145.0	50°54'08.0025"N 0°23'37.1107"E	50.90222	0.39364	Ash Bourne	Hammer Wood Bridge	7.2	EA-SSD	351223005	41	1951-10-14		FLB		8.8	22.5	true	false	false	false	false	false	false	false	false	false	false	false	false	RG	1951-10-14	2023-09-30	0.245	0.002	2015-01-04	2015-01-10	7.303	2020-03-05	2020-03-05	0.042	0.072	0.106	0.578	0.947	0.49	26285	26126	99.395				8.6	29.3	68.6	112.1	170.8	856	833	0.3817	0.1909	0.3401		0.0623	0.405	0.1035	0.4813		0.0041		1.0						0.34	0.391	0.957	104.2	44.39	35.9	48.1	11.3	8.35	4.44	69	176	0.23	9.3	18.64	0.505	0.581	0.041	0.0032			0.0058	0.543	0.649			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound thin-plate weir with compound critical depth flume (with minor tilting).	Compound thin-plate weir used in summer (maintains depth for 'wet fencing' upstream); insensitive and flow pattern can be erratic due to raising / lowering of plate.	Frequency of drowning reduced following downstream channel improvements in 1953. Highest flows exceed the structure calibration; few check gaugings available.		A mainly impervious catchment (Wadhurst Clay) of rural character, with considerable woodland.	Limited storage in Ashburnham Lake. Minor net effect of abstractions and discharges but significant groundwater augmentation (from Ashdown Sands) in most summers - evidently artificial low flow pattern.
41003	Cuckmere at Sherman Bridge	134.7	TQ5328805159	553288.0	105159.0	50°49'32.4597"N 0°10'30.2312"E	50.82568	0.17506	Cuckmere	Sherman Bridge	3.7	EA-SSD	351520004	41	1959-02-01		FVVA		50.6	16.3	true	false	false	false	false	false	false	true	false	false	false	false	false	SP	1959-02-01	2023-09-30	1.418	0.009	1976-08-24	2018-07-04	47.6	1974-11-22	1974-11-22	0.074	0.157	0.339	3.38	6.01	0.24	23618	23041	97.557				4.7	17.8	42.4	103.9	212.8	820	814	0.1832	0.2015	0.5063		0.0834	0.1509	0.2703	0.5389		0.0351	0.064	0.6336	0.2749	0.0275	0.0362			0.34	0.405	0.978	50.2	43.55	36.2	47.8	11.5	26.91	15.66	52	179	0.18	4.7	130.33	0.956	0.758	0.0966	0.0221	0.621	1.098	0.0263	0.787	1.12			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir, high flows measured at velocity-area station upstream at velocity-area station upstream at Arlington. Relatively narrow catchment developed on mixed geology. Responsive flow pattern but can provide periods of sustained high flow in winter.	Flat-V weir (width 10m, cross-slope 1:10), with crest tapping. High flows gauged at velocity-area section upstream at Arlington, previously calculated using a slope-area section and stage measured at Milton Lock 1.6km downstream. Prior to 1994: compound broad-crested weir - drowned regularly (tidal locking in extreme events, especially in winter) when ratio of downstream to upstream head was >40%. Flows then assessed using fall-discharge method (adjustment discontinued 1981 - peaks truncated at ~5 cumecs until ~1990). Removed from peak flows dataset in May 2016 (WINFAP Files v4).	All but exceptional flows contained, but peaks truncated at ~27 cumecs - common in 2000. Reliable station for low to medium flows, but becomes non-modular at ~6 cumecs, flows >10 cumecs unreliable; river goes out of bank across adjacent fields at high flows. Some bypassing noted in CEH files (1970), via a small culvert operative during floods - uncertain what level this occurs, or if this still applies. Currently still tidally affected downstream (from 0.7m stage), two point flows taken. Very few check gaugings available at high flows.	No flows 29/02/1992 - 03/03/1994 due to rebuild. Flows >10 cumecs are unreliable.	Relatively narrow catchment developed on mixed geology (mainly Hastings Beds and Gault Clay). Primarily a rural catchment with significant areas of woodland.	Responsive flow pattern but can provide periods of sustained high flow in winter. Arlington pumped storage reservoir is upstream, for which there is an abstraction which influences flows. Runoff reduced by public water supply abstraction. Sewage treatment works downstream of gauge has a sluice in place to prevent upstream movement of effluent - this is often overtopped. Limited net effect. Increased urbanisation.
41004	Ouse at Barcombe Mills	395.7	TQ4342114808	543421.0	114808.0	50°54'53.7218"N 0°02'19.8508"E	50.91492	0.03885	Ouse	Barcombe Mills	5.2	EA-SSD	352710015	41	1956-01-01		US				true	false	false	false	false	false	false	false	true	false	true	false	false	SRPGE	1956-10-01	2023-09-30	3.156	0.063	1996-06-11	1996-06-11	128.6	1974-11-22	1974-11-22	0.292	0.788	1.422	7.224	12.34	0.41	24471	23062	94.242				2.6	24.1	56.4	120.7	247.4	832	831	0.2689	0.2159	0.4037	0.0012	0.089	0.2033	0.2195	0.5344	0.0034	0.0346	0.0183	0.8344	0.1369	0.0104	0.0054		0.0193	0.34	0.457	0.95	64.3	42.03	35.6	47.0	11.6	39.79	19.32	65	185	0.12	2.6	400.61	0.593	0.75	0.0575	0.0184	0.639	1.027	0.0253	0.814	1.039			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	In 1994, a four-path ultrasonic gauge superseded (except for minimum flows) complex structure (weirs and sluices) - subject to drowning. Sluice operation further complicates the derivation of discharges.	Ultrasonics moved upstream of abstraction intake in 1999.	High flow measurement problems remain; goes out of bank at high flows. Sluice operation further complicates the derivation of discharges.		Geology: mixed - Hastings Beds (mainly permeable) predominate. A largely rural catchment with substantial woodland and scattered urban centres.	Water utilisation in the catchment is complex; major abstraction located immediately upstream and Ardingly reservoir (2km upstream) provides regulation.
41005	Ouse at Gold Bridge	180.9	TQ4290721374	542907.0	121374.0	50°58'26.6035"N 0°02'02.8123"E	50.97406	0.03411	Ouse	Gold Bridge	11.3	EA-SSD	352810006	41	1960-03-01		FVVA		12.2	12.8	true	true	true	true	false	true	false	true	false	true	false	true	true	SRPGE	1960-03-01	2023-09-30	2.234	0.119	1976-08-21	1976-08-21	64.0	2000-10-12	2000-10-12	0.377	0.715	1.11	4.86	7.57	0.49	23224	23110	99.509	1960-02-01		33.068	12.1	34.6	70.4	131.0	201.8	835	835	0.322	0.2277	0.3336	0.0021	0.0935	0.2484	0.1975	0.4991	0.0034	0.0442		0.9578	0.0422				0.0193	0.35	0.494	0.922	73.5	40.94	35.9	47.4	11.7	29.88	15.87	77	177	0.16	12.1	182.66	0.469	0.771	0.0445	0.0221	0.691	0.976	0.0297	0.851	0.994	1959..1991		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir superseded a compound short-crested semi-circular weir, the new weir is more accurate at low flows. Flow record patchy 1992-1994 due to construction/remedial work. Flows are heavily influenced by Ardingly Reservoir.	Flat-V weir (crest: 10m wide, cross slope 1:10) commissioned July 1992. Velocity area section with cableway for higher flows, but problems associated with upstream influences. Superseded a compound short-crested semi-circular weir (width 10.7m, central section 1.22m wide & 2 flanking sections, 3.15m wide, elevated by 0.15m). The modular limit of this weir was 0.6m stage / 5.6 cumecs, or a ratio of upstream to downstream head > 40%.	Two subsidiary culverts accommodate overflow, bank re-profiling has been carried out to negate the effects of this water entering the gauging section at high flows; relatively successful. Exact modular limit is not known but lies between 0.8m - 0.9m stage / 8.2 - 10.5 cumecs. The abutment walls at the weir, earth bank upstream and alongside the weir and gauge section give full containment, to all but exceptional flows; the EA doubt whether significant bypassing actually occurs until the upstream head exceeds 3.05m. No overtopping of flood banks in Oct 2000; 85 cumecs current-meter gauging following peak, and site has many check gaugings available. A 2002 station review suggests a mistake in the dimensioning of the upstream truncation of the weir block during design. 1996 & 2001 survey drawings show significant sediment deposition upstream of the weir (up to approx. 600mm against left abutment); this is sufficient to have a tangible effect on the upper part of the stage-discharge relationship. Sediment was removed following the 2000 event, but may have returned. Work was done (1993-1994), on 3 bank sections near to the weir which had slipped, more widespread bank stability measures also implemented. Changes in tailwater levels between 1960-61 & 1967-69. Upstream & downstream head causes a need for some 2 point gaugings. Frequently gauged but no low flow gaugings, although the new weir is more accurate at low flows. Possible errors at higher flows due to flow separation & circulatory flow against the left bank - caused by the entrance of a drainage ditch upstream of the station carrying the flow from 3 culverts under the A272; it is uncertain whether this is still the case, as notes indicate that the culverts may no longer be in use. Two ratings applied across period of record, the most recent is valid from July-1992 when weir was replaced necessitating a change in rating. Both ratings fit to their respective gaugings well and account for bypassing when >90m3s-1.	Flow record patchy 1992-1994 due to construction/remedial work. Full daily flow record reprocessed in 2003. Data estimated for Jun - Jul 1983 and for Sep 1993. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Mixed geology with substantial permeable outcrops - particularly the Tunbridge Wells Sands. Diverse land use - chiefly rural with significant woodland but some urban centres including Haywards Heath. Some increase in urbanisation. The River Ouse is subject to flashy flows in summer & more prolonged flooding in winter. Flooding can be extensive with the valleys either side of the river inundated.	Flows are heavily influenced by Ardingly Reservoir which impounds the Shell Brook tributary upstream (catchment area 22.6sq. km). Reservoir releases augment low flows and supply the downstream river abstraction at Barcombe Mills. Sewage treatment works also have a limited influence on the responsive regime.
41006	Uck at Isfield	87.8	TQ4587119006	545871.0	119006.0	50°57'07.3235"N 0°04'31.2751"E	50.95203	0.07535	Uck	Isfield	11.3	EA-SSD	352910003	41	1964-10-01		FV		76.0	31.1	true	true	false	true	false	false	false	false	false	false	false	false	false	E	1964-10-01	2023-09-30	1.164	0.064	1992-06-27	1992-06-27	59.68	2000-10-12	2000-10-12	0.167	0.299	0.504	2.362	4.08	0.41	21549	21482	99.689	1964-07-01		36.645	13.3	34.0	67.6	122.3	235.2	837	823	0.2523	0.146	0.4971		0.0917	0.1779	0.2077	0.5679	0.0003	0.0444		1.0					0.0018	0.35	0.432	0.98	72.0	43.19	35.1	46.5	11.5	18.13	11.0	73	215	0.18	13.3	89.16	0.467	0.686	0.0422	0.023	0.654	0.611	0.0301	0.825	0.639			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir. Very responsive regime. Discharge from sewage treatment works affects low flows during summer. Automatic flood gates upstream at Uckfield Mill can produce abrupt flow changes.	Flat-V weir (crest width 7.62m; 1:10 cross-slope) with cableway. Crest tapping (not currently instrumented) and some non-standard elements (e.g. experimental fish-ladder which has now been removed) between the abutments of a pre-existing Crump weir. Fish baffles installed in August 2019 on the downstream slope of the weir. Station is well sited downstream of railway embankment with large capacity bridge opening, 2km upstream of the Isfield Road Bridge. Superseded (in Sept 1999) a Crump profile weir (crest width 7.62m, crest level from bed 1.13m), with crest tapping. Flow capacity of earlier Crump was 51 cumecs but was subject to drowning in the mid flow range (10-30 cumecs), with a return to modular conditions at high flows due to overbank flow and the valley shape downstream. Prior to weir replacement (1999), retaining wall around old structure was in poor condition with the masonry on the right bank in danger of collapse.	Flow gaugings using the crest tappings were made during about the first 10 years of operation. Weir was built with a 24 inch bypass pipe controlled by a penstock at its upstream end. Flow bypassing commenced at a gauged head of about 2.35m (51.61 cumecs) prior to April 2002. Following repair and rising of the eroded bank in April 2002, flow bypassing would occur at a gauged head of about 2.40m (55.85 cumecs). Present weir does not comply with BS 3680 requirements (upstream gauging location is closer to crest than recommended for gauged heads >1.4m approx). Experimental fish ladder installed on the downstream face, no effects noticed so far. Both original and existing weirs exhibit mid-range drowning (~10-30 cumecs). In 2002 a 6m section of the left hand bank immediately upstream of weir was rebuilt as was washed away, the bank around the weir was piled and work done on the upstream approach. Cableway installed in 1999 improved high flow capability; lots of check gaugings available. Ratings differ pre and post 1999 (when weir upgraded). Good confidence in mid-range flows although no account for remedial work in 2002 when bypassing reduced. All gaugings >2m are post remedial work and confirm that rating now overestimates flow. Two peak flow ratings applied across the period of record.	Data infilled with modelled data 30/07/2019-22/08/2019 due to fish baffle installation.	Catchment geology very mixed; Hastings Beds predominate. Above Isfield the catchment is rural with significant areas of woodland, but the Uckfield urban area is expanding. The River Uck is the principal tributary of the River Ouse.	Very responsive regime. No substantial abstractions but discharge from sewage treatment works affects low flows during summer. Automatic flood gates upstream at Uckfield Mill can produce abrupt flow changes. Runoff increased by effluent returns. OUSENAT flow naturalisation scheme. Urban expansion around Uckfield.
41009	Rother at Hardham	345.8	TQ0342517946	503425.0	117946.0	50°57'06.0405"N 0°31'44.3365"W	50.95168	-0.52898	Rother	Hardham	3.9	EA-SSD	254310002L	41	1959-01-01		CC				true	false	false	false	false	false	false	true	false	false	false	false	false	PG	1959-12-01	2023-09-30	4.48	0.649	2006-08-06	2006-08-06	71.1	1968-09-16	1968-09-16	1.08	2.02	2.89	10.5	15.2	0.63	23315	21081	90.418				2.5	30.0	67.2	139.0	279.0	918	899	0.2543	0.3282	0.318	0.0076	0.0773	0.2992	0.2775	0.362	0.0205	0.0389	0.5524	0.1316	0.19	0.126	0.0124	0.0113	0.0173	0.34	0.666	0.973	72.8	27.37	39.4	50.8	10.4	58.17	31.38	76	120	0.1	2.5	360.76	0.72	0.931	0.0742	0.0084	0.496	1.168	0.0229	0.736	1.112			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir and flood gate (installed in 1982) superseded a broad-crested weir.	Lower Crump section acts as fish pass and flood gate is rarely used.	Water can back-up from downstream confluence of Rother and Arun, causing station to drown at 16 cumecs or less (dependent on tide level). River also goes out of bank over adjacent fields at such flows. High flows extrapolated from Velocity-Area station at Fittleworth ~3km upstream.	Flows truncated at ~16 cumecs since 1982 due to backwater and drowned weir conditions. No data on National River Flow Archive 1977-82.		Abstractions for public water supply (offtake is immediately upstream); minor spray irrigation impact.
41010	Adur W Branch at Hatterell Bridge	109.1	TQ1784219741	517842.0	119741.0	50°57'54.1724"N 0°19'23.6823"W	50.96505	-0.32325	Adur W Branch	Hatterell Bridge	3.6	EA-SSD	253320002	41	1961-01-01	2005-04-01	MIS		11.3	23.3	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1961-06-03	2005-03-31	1.16	0.0	1978-08-14	1983-09-25	18.4	1971-03-18	1971-03-18	0.025	0.133	0.308	3.468	6.18	0.3	16008	15727	98.245				5.5	14.1	30.1	60.9	106.7	803	793	0.1675	0.3557	0.4002	0.0	0.0588	0.1041	0.3049	0.565	0.0015	0.0221	0.0107	0.026	0.9634		0.0205			0.35	0.277	0.969	32.8	47.69	35.6	46.4	11.4	19.0	9.51	35	157	0.09	5.5	109.62	0.842	0.823	0.1128	0.011	0.559	1.054	0.0136	0.687	1.089			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three-bay rectangular critical-depth structure. Station closed in 2005.	Flanking sections (each 2.16m wide) can be closed to concentrate flow in the central bay (0.864m). Station closed in 2005.	Stop-board removal can produce odd flow patterns. Structure non-modular at ~5 cumecs; few high flow gaugings. Prior to 2003, two different ratings (summer and winter) were applied. Flood flows bypass the structure across adjacent fields due to shallow river bank. Almost all flood flows truncated at ~11 cumecs (very common in 2000-02).		A rural catchment developed principally on impervious formations - Weald Clay dominates.	Sensibly natural - and very responsive - flow regime.
41011	Rother at Iping Mill	154.0	SU8522022904	485220.0	122904.0	50°59'57.2187"N 0°47'12.9302"W	50.99923	-0.78693	Rother	Iping Mill	26.8	EA-SSD	254340011	41	1967-01-01		CC		67.0	6.92	true	true	false	true	false	false	false	true	true	false	false	false	false	GE	1966-11-01	2023-09-30	2.424	0.366	1976-08-24	1976-08-24	54.7	2000-11-06	2000-11-06	0.718	1.26	1.78	4.47	6.58	0.68	20788	20739	99.764	1966-12-01		30.06	28.0	49.2	81.3	145.8	269.1	935	921	0.2376	0.3386	0.3186	0.0093	0.082	0.2441	0.2783	0.4068	0.0183	0.0505	0.5508	0.1839	0.097	0.1683		0.0261		0.35	0.675	0.973	75.1	26.84	39.6	51.0	10.2	27.36	14.13	91	126	0.12	28.1	156.94	0.692	0.858	0.0779	0.0119	0.5	1.082	0.0287	0.737	1.077			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir, bypassing occurs at the mill channel. Flow regime has a large groundwater component.	Compound Crump profile weir (crest widths 3.05m and 2 x 5.03m), central bay 0.3m lower. New ultrasonic gauge present downstream at Fittleworth to measure high flows. Prior to 1968 an existing penstock weir was in place, consisting of 5 irregularly shaped masonry piers & abutments, constructed in the late 18th century. The 6 wooden ratchet operated doors had fallen into disuse.	Weir was originally designed to measure flows up to 51 cumecs, actual capacity when built 45 cumecs. Upstream approach not central, probably affecting uniformity of flows in weir section. Non-modular only during high flows (conveyance affected by growth of trees obstructing a downstream bridge; downstream siltation may also be a factor). Sept 2000 visit notes suggest flood flows during Dec 1999 had deposited up to 0.6m of sand on the right bank downstream of the structure, adding to effects of the bridge downstream causing drowning. Bankfull stage 1.9m above weir crest. One rating applied across period of record. Derived from hydraulic modelling, it fits well to the maximum gauging of 0.6m.	1968 is largest high flow event on record, when the channel was overtopped a maximum level 0.7m above structure full was obtained; flow was estimated at 100-150 cumecs. Significantly greater than late 2000 maxima when all flows were contained with no overtopping or bypassing. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Mixed geology; 2/3 pervious, 1/3 naturally impervious. Large tracts of Lower Greensand. A mainly rural catchment with some urban development. The river originates by Liss, flows southwest to Petersfield then east towards confluence with the River Arun. The main river is confined to the sandy measures of Lower Greensand which comprise almost 50% of catchment area giving rise to very fine silty and sandy alluvium. North of the Rother the area is mainly occupied by an outcrop of the Hythe Formation and to the south by an outcrop of the Folkestone Formation. Numerous fed springs originate at the Chalk and Gault Clay boundary, drain northwards into the Rother and cut across the Folkestone Formation. The catchment is predominantly rural with some urban development, mixed woodland & arable use.	Many springs provide a large baseflow component but the Rother is very responsive to rainfall. Runoff influenced by groundwater abstraction/recharge. Petersfield forms a significant urban area. Abstractions for spray irrigation and sewage treatment works discharges affect the flow regime, particularly low flows - but limited impact overall. The Rother is influent above Iping Mill.
41012	Adur E Branch at Sakeham	93.3	TQ2188418985	521884.0	118985.0	50°57'26.6857"N 0°15'57.4766"W	50.95741	-0.26597	Adur E Branch	Sakeham	3.1	EA-SSD	253220001	41	1967-01-01		CC		30.0	5.3	true	true	false	true	false	false	false	true	false	false	false	false	false	E	1967-07-21	2023-09-30	1.402	0.006	1985-04-17	1985-04-17	41.2	2000-10-12	2000-10-12	0.162	0.286	0.482	3.05	5.67	0.33	20526	20367	99.225	1967-10-10		31.6	3.1	18.0	42.8	91.1	232.5	827	829	0.2058	0.2837	0.3529	0.0002	0.1468	0.137	0.2595	0.4825	0.002	0.1177	0.076	0.437	0.4684	0.0186				0.34	0.376	0.961	48.3	43.78	37.6	48.2	11.6	23.42	12.43	49	247	0.09	3.1	93.62	0.612	0.856	0.0707	0.0597	0.785	1.13	0.0768	0.87	1.115			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir. Largely rural lower catchment, responsive regime.	Compound Crump profile weir (crests: 1.219m and 2 x 2.438m, total width 6.71m right-hand crest is 0.01m higher than left-hand crest). Present weir was constructed between 14/05/1966 - 10/10/1967, along with work on a local improvement in river section and alignment plus replacement of old penstock. Old penstock weir crest was lifted in 1964 to avoid backwater effects.	Maximum capacity 45 cumecs. Crest tapping (seldom used) removed in 1993-94 when weir crest and wing-walls replaced (the weir profile remained the same). Modularity limitations at medium-high flow due to downstream channel conditions, but flows rarely corrected for frequent drowning as point of drowning unknown. Although not directly tidally affected, outfall sluices approx. 3.5km downstream forming the tidal limit of the Adur restrict the floodplain and embanked section downstream of the gauge, exacerbating drowning problems. One rating applied across period of record, based on hydraulic properties of Crump weir. Problems in past development of rating curve due to frequent drowning & subsequent scatter of points on rating curve. Station graded C for mean annual flood range.	Flows on 13/08/2004 and for Aug-Sep 2007 recession considered suspect. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Mixed geology - permeable headwaters but predominantly Weald Clay in the lower reaches. Largely rural lower catchment but significant urban growth along the eastern catchment boundary (including Cuckfield, Burgess Hill and Haywards Heath). The frequency of summer flooding may be increasing.	Responsive regime. No substantial abstractions, small net import of water. Burgess Hill sewage effluent has substantial impact on low flows.
41013	Huggletts Stream at Henley Bridge	14.2	TQ6717313769	567173.0	113769.0	50°53'57.1287"N 0°22'33.4733"E	50.8992	0.37596	Huggletts Stream	Henley Bridge	6.4	EA-SSD	351222002	41	1950-12-01		FLB		8.8	35.0	true	false	false	false	false	false	false	false	false	false	false	false	false	RG	1950-12-01	2023-09-30	0.16	0.005	1997-09-27	1997-10-02	4.914	2020-03-05	2020-03-05	0.016	0.029	0.056	0.35	0.657	0.36	26602	26337	99.004				9.1	24.7	57.5	101.7	133.2	819	821	0.1614	0.2501	0.5454		0.0332	0.1382	0.2046	0.6553		0.0014		1.0						0.34	0.4	1.0	86.2	44.12	35.4	47.2	11.2	7.64	3.96	60	166	0.31	9.1	14.18	0.227	0.475	0.0226	0.0048			0.0046					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound thin-plate weir with compound critical depth flume for higher flows.	Compound thin-plate weir with compound critical depth flume for higher flows.	Downstream dredging in 1952 facilitated modular operation (earlier data suspect) but intermittent drowning still factor. Few check gaugings available. Pre-2006, changeover between summer and winter ratings unclear.		Huggletts Stream flows south from the main High Weald drainage divide. A rural catchment developed mostly on impervious formations - extensive tracts of Wadhurst Clay.	Responsive, essentially natural, flow regime but some groundwater augmentation (from Ashdown Sands) during droughts (e.g. 1989/90).
41014	Arun at Pallingham	379.0	TQ0469222929	504692.0	122929.0	50°59'46.4740"N 0°30'34.2658"W	50.99624	-0.50952	Arun	Pallingham	3.7	EA-SSD	254210010	41	1970-01-01		FVUS			26.5	true	true	false	true	false	false	false	true	false	false	true	false	false	E	1970-06-01	2023-09-30	5.588	0.122	1973-09-13	1973-09-13	162.0	2013-12-24	2013-12-24	0.271	0.564	1.14	15.6	29.2	0.21	19480	19039	97.736	1960-10-01		80.282	4.1	23.6	55.1	107.5	291.4	800	805	0.3096	0.2613	0.3363	0.0002	0.0801	0.2849	0.2332	0.4252	0.0033	0.0511	0.0444	0.117	0.8386		0.0511			0.35	0.39	0.958	49.5	43.3	35.0	46.7	11.4	48.1	28.55	63	177	0.08	4.1	382.69	0.865	0.81	0.0849	0.0192	0.019	1.114	0.0292	0.82	1.119	1994		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir (installed in 1994 when station was moved to Pallingham Manor Farm) with (from 2002) ultrasonics for high flows. Runoff increased by effluent returns. A predominantly impervious catchment. A relatively natural catchment. Growing urban fraction especially around Horsham.	Flat-V weir (installed in 1994 when station moved to Pallingham Manor Farm) with ultrasonics for high flows (from 2002, poor performance in early period). Superseded an insensitive broad-crested weir at Pallingham Quay (15m wide), with 0.03m fall along crest due to settlement, cableway at Park Mound. Possibly also early broad-crested weir at Park Mound (1960-1970).	Work undertaken (2013-2014) to improve ultrasonics, lack of mid/high flow calibrations exist. Weir can drown at higher tides, and above 2 m3/s. Cableway present, but the velocity-area measurement is restricted by the effects of tidal lag at high flows. All but exceptional floods contained (overtopped by 1974 flood) but most post-1979 peak flows truncated at ~55 cumecs. Two peak flow ratings applied across period of record. Pre-1994 rating derived for broad crested crump weir with post 1994 developed for Flat-V weir. Limited gaugings to confirm rating. Tidal influence only allows reasonable relationship (still scattered) at flows > 50 m3/s. Newer (modelled) rating increases flows at high stages compared to FEH data.	From 2009, flows truncated at 5.56 cumecs due to poor performance above this level; more gaugings required before rating can be extended. Record generally complete, some partial data in 1980's and 1990's. Flows comparable to the 1973 minimum occurred in several years.	A predominantly impervious catchment consisting largely of Weald Clay and Lower Greensand. Land use mixed, mainly rural, substantial woodland. A relatively natural catchment. Growing urban fraction especially around Horsham.	The Arun has a relatively natural, and very responsive, regime although runoff increased by effluent returns.
41015	Ems at Westbourne	58.3	SU755074	475500.0	107400.0	50°51'40.2848"N 0°55'43.0366"W	50.86119	-0.92862	Ems	Westbourne	9.6	EA-SSD	255110010	41	1967-01-01		CC		4.5	25.0	true	true	false	true	false	false	false	true	false	false	false	false	false	RG	1967-02-18	2023-09-30	0.507	0.001	1969-10-28	1970-01-07	5.08	2000-12-13	2000-12-17	0.016	0.063	0.21	1.367	1.85	0.93	20679	20585	99.545	1967-04-26		2.271	10.7	36.9	97.5	156.8	241.8	959	899	0.2851	0.4239	0.2573		0.0174	0.3055	0.4501	0.2383	0.0017	0.0044	0.9278			0.0722	0.024	0.0149		0.34	0.905	0.976	81.1	9.26	40.0	50.7	10.0	16.86	9.27	97	198	0.35	10.7	57.89	0.29	0.657	0.0386	0.0087	0.482	0.814	0.0037					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Asymmetrical compound Crump weir gauging a river with baseflow-dominated regime. Significant net export of water from catchment, but also some flow augmentation.	Asymmetrical compound Crump profile weir; crests: 0.61m (showing effects of erosion) and 4.12m broad. Located 160m upstream of Hampshire Bridge.	Structure limit 5.08 cumecs, modular throughout the flow range. Flows were above structure limit during 2000 event for long periods of time. All flows contained. Differential drawdown can affect river level measurement. One theoretical rating applied across period of record, but appears to overestimate flows.		The Ems - which is ephemeral over much of its length - is a Chalk stream draining the South Downs; Drift cover is minimal. A rural catchment with significant woodland and scattered settlements. Geology principally chalk, therefore flow is predominantly from groundwater. Largely rural with significant woodland. No significant catchment changes known.	Baseflow-dominated regime. Flood events are typically small, runoff normally approximately 1%. Significant net export of water from the catchment (groundwater abstractions) but low flows augmented by compensation water (from borehole).
41016	Cuckmere at Cowbeech	18.7	TQ6113515076	561135.0	115076.0	50°54'45.5802"N 0°17'26.7027"E	50.91266	0.29075	Cuckmere	Cowbeech	29.8	EA-SSD	351550005	41	1939-04-01		CC		10.0	100.0	true	true	false	true	false	false	false	true	false	false	false	false	false	PG	1939-04-01	2023-09-30	0.185	0.003	1976-06-21	1976-06-21	8.487	1967-11-04	1967-11-04	0.015	0.036	0.069	0.4	0.715	0.42	30864	27350	88.615	1939-04-01		9.525	31.4	48.9	84.0	143.7	184.7	835	855	0.1517	0.1595	0.5543		0.11	0.1831	0.2253	0.5657		0.0255		1.0						0.34	0.471	0.966	78.5	42.07	37.0	48.7	11.5	8.75	5.0	90	182	0.34	31.4	19.09	0.476	0.516	0.0434	0.013	0.45	1.379	0.0273	0.757	1.462			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	An asymmetrical compound Crump profile weir with reinforced concrete crests. A rural catchment (with a significant urban fraction in the headwaters) on mixed geology. Responsive to rainfall on impervious part of catchment. Large groundwater component.	An asymmetrical compound Crump profile weir with reinforced concrete crests 2.13m and 2.97m broad. with crest tapping. Second crest is 0.15 m above lower crest.	Transition of flow from small weir to larger weir at 0.4 m head, derived flows above this level can be suspect. Very limited head during droughts, and crest tapping is necessary at stages >0.6 m (not currently used, silted up regularly). Weir drowns around 0.75 m/5.8 m3/s and capacity is exceeded in large floods (structure-full 1.46 m); weir prone to bypassing. Bridge downstream causes choking, affecting the weir. New crest installed 2002, no change in crest level. One modelled rating applied across period of record. Good check gauging via downstream velocity-area station using current meter and derrick. At height of sidewalls flow can be between 10-15 m3/s.	Early daily flow data (1939-67) is of poorer quality (daily mean flows) and relates to low flows only, when a low flow weir was in place with a further low flow structure (V-notch), 180m downstream; some data have been infilled. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A rural catchment (with a significant urban fraction in the headwaters) developed on mixed geology, Hastings Beds predominate, with a Wealden mixture dominating the pervious parts of the catchment.	Large groundwater component, but responsive to rainfall on impervious part of catchment. Sewage treatment works discharges upstream. Earlier surface and groundwater abstractions have ceased; previously an abstraction intake existed immediately upstream of weir. Abstraction for public water supply.
41017	Combe Haven at Crowhurst	30.74	TQ765102	576500.0	110200.0	50°51'51.7179"N 0°30'24.2937"E	50.86437	0.50675	Combe Haven	Crowhurst	1.9	EA-SSD	351110006	41	1969-01-01	2004-04-02	CC		21.8	59.1	true	false	false	false	false	false	false	false	false	false	false	false	false	G	1969-10-01	2004-04-02	0.332	0.004	1989-10-18	1989-10-18	10.0	2000-10-31	2000-10-31	0.02	0.056	0.126	0.679	1.24	0.4	12603	12258	97.263				6.4	16.4	47.1	86.7	141.4	783	791	0.2287	0.2269	0.4567		0.0745	0.22	0.2247	0.5221		0.0292		1.0					0.0245	0.34	0.417	0.973	72.6	44.0	34.1	46.0	11.1	10.52	5.6	49	168	0.21	6.5	35.95	0.804	0.596	0.0835	0.0216	0.546	1.179	0.0199	0.716	1.16			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir.	Compound Crump profile weir (crests: 2.44m and 2 x 2.13m broad) subject to frequent drowning. Station level-only from 2004, due to bypassing and access issues.	Station prone to drowning due to tide locking after rainfall events. Full range station. Poor differentiation between low flows over lengthy periods (repeated sequences of 0.02 cumecs being common).	Earliest data less reliable due to subsidence of the weir.	Mixed geology and land use. Mainly impervious formations (Wadhurst Clay) but with significant areas of Tunbridge Wells and Ashdown Sands. A predominantly rural catchment with some urban centres.	Responsive regime.
41018	Kird at Tanyards	66.8	TQ044256	504400.0	125600.0	51°01'13.1013"N 0°30'46.4768"W	51.02031	-0.51291	Kird	Tanyards	8.7	EA-SSD	254220010	41	1969-01-01	2001-10-11	C		31.0		true	true	false	true	false	false	false	false	false	false	false	false	false	N	1969-07-01	2001-10-11	0.847	0.0	1969-09-18	1998-09-25	26.3	2001-01-03	2001-01-03	0.003	0.041	0.127	1.951	4.59	0.17	11791	11777	99.881	1969-10-10	2001-10-01	19.902	7.3	22.6	44.5	78.1	280.3	811	820	0.3147	0.3049	0.328	0.0	0.0275	0.3314	0.2512	0.3997	0.0035	0.0109	0.0148		0.9852		0.0499			0.35	0.36	0.961	41.0	45.71	36.3	47.9	11.2	22.93	12.3	50	116	0.17	8.2	67.36	0.986	0.866	0.107	0.0009			0.0043			2001		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir draining impervious catchment with natural regime. Station closed from October 2001.	Station closed from October 2001. Crump profile weir (8.7m broad - fall of 0.012m along crest due to settlement) with crest tapping (not used for most recent data before station closure). Located 3.23km upstream of confluence with River Arun. A low retention weir existed 305m downstream of the site at the time of construction. It was originally intended that the water upstream of the new weir could be drained through a 0.61m diameter pipe in order to facilitate maintenance on the upstream side.	Structure is insensitive and subject to drowning at low flows - modular limit between 0.7 - 0.85m. Bypassed at high flows (February 1974 event overtopped by 0.15 - 0.3m). One rating applied across period of record using hydraulic modelling for high flows.	Subject to zero flow during prolonged dry periods.	An impervious (Weald Clay) catchment given over to agriculture; some extensive woodland tracts. Slight urbanisation has occurred in the catchment.	Very minor impact of artificial influences on the responsive flow regime. Natural to within 10% at Q95.
41019	Arun at Alfoldean	139.0	TQ1172233150	511722.0	133150.0	51°05'12.4650"N 0°24'22.4347"W	51.0868	-0.40623	Arun	Alfoldean	21.4	EA-SSD	254250008	41	1970-01-01		CC		84.5	23.6	true	false	false	false	false	false	false	true	false	false	false	false	false	E	1970-05-01	2023-09-30	1.768	0.018	1983-08-10	1983-08-10	52.1	2013-12-24	2013-12-24	0.156	0.315	0.6	4.24	7.187	0.33	19511	19404	99.452				22.5	40.8	73.5	121.8	291.4	808	807	0.2788	0.2482	0.335	0.0003	0.1272	0.2274	0.2489	0.4333	0.0035	0.084	0.031	0.3063	0.6628		0.0214			0.36	0.465	0.941	53.0	39.21	34.2	45.6	11.4	24.62	14.82	78	231	0.15	22.5	151.63	0.56	0.829	0.0594	0.0371	0.799	0.851	0.051	0.866	0.857			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Asymmetrical compound Crump profile weir.	Asymmetrical compound Crump profile weir(crests: 4.0m and 6.0m broad).	Crest tapping not currently used; over-estimation of high flows (structure drowns frequently); but 1996-2002 flows truncated at ~15 cumecs. 1983 minima under review (those of Aug 1976 look more realistic). Stilling well leakage can influence water levels.		Principally an impervious (Weald Clay) catchment - mainly rural but includes Horsham.	Limited impact of artificial influences on responsive flow regime - small net augmentation due to sewage effluent, which can significantly affect low flow patterns.
41020	Bevern Stream at Clappers Bridge	34.6	TQ4235116107	542351.0	116107.0	50°55'36.7003"N 0°01'26.9149"E	50.92686	0.02414	Bevern Stream	Clappers Bridge	9.6	EA-SSD	352711019	41	1969-10-01		C US		25.0	87.1	true	true	true	true	false	false	false	true	false	false	false	false	false	E	1969-10-01	2023-09-30	0.484	0.0	2009-09-28	2023-09-14	13.01	2008-01-15	2008-01-15	0.02	0.059	0.129	1.25	2.26	0.28	19723	19335	98.033	1969-09-30		13.78	9.5	24.0	45.1	79.1	247.4	874	886	0.169	0.3343	0.425		0.059	0.116	0.2646	0.5969	0.0005	0.0207	0.2068	0.0191	0.6565	0.1176				0.34	0.355	0.993	46.7	43.25	37.1	48.9	11.5	15.83	8.8	51	52	0.25	13.7	35.48	0.689	0.952	0.0758	0.0126	0.461	1.076	0.0129	0.658	1.189			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir (with ultrasonic) gauging a small primarily impervious responsive rural catchment.	Crump profile weir (crest 6m broad) in straight reach of realigned channel, approx 100m downstream of road bridge. Weir altered by the insertion of low flow crump weir (0.5m wide) in centre of structure in Oct 2005 (new crest 0.521m below the rest of the weir). Low flow weir generates substantial fall below station; two sets of baffles (with notches in sides for fish passage) reduce scour on downstream side of weir. Two cross-path ultrasonic gauge installed January 2007. Evidence for two previous structures in locality.	Constructed with crest tappings, but these not used since 1981. Stream channel narrows downstream of structure, exacerbated in summer by weed growth. Crest width of 6m is too large for accurate low flow measurement. Bypassing of the original structure above 1.15m as the river is on higher ground than the surrounding land. Possible via a number of routes - a ditch downstream of Clappers Bridge, overtopping of the banks upstream of the weir and overtopping of the abutments at the gauging station. Bypassing is also known to have occurred over the Spithurst Road southwest of Clappers Bridge. However, since redevelopment of weir in Oct 2005, no bypassing observed during instances with stage >1.15m. Two ratings applied across period of record, latest from Oct-2005 when weir modified. Gaugings show good fit to rating. Rating of the original weir is consistent with theoretical rating at low stages; it has an allowance for bypassing for stages above 1.15m, but has not been validated above this level. A rating for the new structure was obtained after extensive program of check gauging, up to nearly bankfull.	Since February 2013, all flow data from this site derived using solely ultrasonic (except 12/03 - 09/04/2014 and 01/01 - 30/09/2020).	One of the largest tributaries of the River Ouse. A small primarily impervious catchment draining east & north from the South Downs, north flowing tributaries providing significant baseflow. Geology is predominantly Weald Clay with outcrops of chalk, Upper & Lower Greensand & Gault Clay on South Downs. A rural catchment with considerable woodland. Slight urbanisation in the catchment.	Substantial winter baseflow with rapid response to rainfall leading to short duration high flood flows. Runoff affected by effluent returns but negligible impact of artificial influences on responsive flow regime on all but lowest river flow.
41021	Clayhill Stream at Old Ship	7.1	TQ4482315361	544823.0	115361.0	50°55'10.3529"N 0°03'32.3895"E	50.91954	0.059	Clayhill Stream	Old Ship	6.3	EA-SSD	352712005	41	1969-12-01	2014-04-14	C		13.9		true	false	false	false	false	false	false	false	false	false	false	false	false	N	1969-12-01	2014-05-14	0.092	0.0	1970-06-04	2013-09-14	9.48	2000-10-12	2000-10-12	0.0	0.001	0.012	0.203	0.427	0.13	16236	16218	99.889				5.2	11.9	20.3	32.2	40.1	805	805	0.2085	0.1909	0.542		0.0296	0.1985	0.3557	0.4431	0.0016	0.0011			1.0		0.07		0.0006	0.34	0.254	1.0	27.2	48.25	35.3	45.8	11.4	6.61	2.94	21	253	0.24	5.2	7.17	0.483	0.871	0.0516	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir. The Clayhill stream is ephemeral and drains an impervious catchment.	Crump profile weir (crest width: 3.0m) with crest tapping and flushing point. Located 0.57 km upstream of confluence with Iron River.	Structure drowns at approx. 0.45m (1.87 m3/s). Algal growth on crest can influence stage and is burnt off when flows are suitable or by-pass channel can be used. Insensitive at low flow; should be sensitive at high flow. Possibly bypasses at higher flows upstream of the gauge, although this has never been witnessed. The date of removal of the cableway is unknown but was prior to 1989. New crest weir installed during 10/10/05 to 16/11/05, no change in crest height. One rating applied across period of record. Rating based on hydraulic calculations for Crump profile weir, no spot flow gaugings available for verification. No rating available for non-modular range.	Extended periods with zero flow in summer. Some (sporadic) early flow data available (at Southern Water) from 1955. Data for during 10/10/05 to 16/11/05 during installation of new crest weir.	The Clayhill stream is ephemeral and drains an impervious (Weald Clay) catchment. Land use: almost exclusively rural with considerable woodland and scattered settlements.	Ephemeral river; zero flows common in dry years. Natural to within 10% at Q95.
41022	Lod at Halfway Bridge	52.0	SU9312422259	493124.0	122259.0	50°59'31.9403"N 0°40'28.1395"W	50.99221	-0.67448	Lod	Halfway Bridge	14.3	EA-SSD	254323017	41	1970-01-01		C		41.0	68.6	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1970-04-10	2023-09-30	0.616	0.004	1976-09-01	1976-09-01	22.71	2020-02-16	2020-02-16	0.052	0.111	0.22	1.51	2.55	0.34	19532	19532	100.0	1970-09-01		16.6	16.4	40.8	70.4	152.0	279.0	886	857	0.4144	0.2304	0.3058	0.0009	0.0414	0.4947	0.1542	0.3208	0.0037	0.0247	0.2261		0.7739					0.35	0.48	0.951	78.6	38.72	38.5	49.3	10.9	19.11	9.76	82	147	0.15	20.2	52.44	0.652	0.875	0.0612	0.0022			0.0087	0.738	1.098			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir. Primarily an impervious catchment. Minor flow regulation associated with upstream mill. Flashy response caused by steep clay topography in the upper catchment.	Crump profile weir (crest 7.05m broad).	Crest tapping present (not currently used as area is very sandy and blocks easily but when in operation reduction factors of 0.8 assessed for high flows). Structure limit (from 1974 records) 1.95m / 41.49 cumecs. However, one or two floods have an appreciable crest tapping level, giving reduction factors of 0.8. All but highest flows modular. Footbridge just upstream of weir crest can control flow - effectively limits the free water surface at 1.95m. Some bypassing in exceptional floods. Good current meter record. Rating confirmed to 10 cumecs by gaugings but footbridge can control flows above ~40 cumecs. One peak flow rating applied across period of record. Developed using slope-area method for the lowest stage and ISIS modelling for the remaining flow range; confirmed to 14 m3s-1 with spot flow gaugings. Some bypassing in exceptional floods.	Data estimated for Nov 2000 - Jan 2001. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	The River Lod originates to the northwest of Fernhurst and flows southeast to the confluence with the River Rother east of Midhurst in Selham. Primarily an impervious catchment with Weald Clay more extensive than pervious Lower Greensand. A Greensand band exists just upstream of the station. The underlying geology comprises Hythe Beds composed of sandstones, siltstones & clays. Rural with considerable woodland. No significant catchment changes known.	Very responsive regime caused by steep clay topography in the upper catchment. The more permeable components feed springs that provide the baseflow for the tributary headwaters. Flows are natural with a small net export of water due to groundwater abstraction. Minor flow regulation associated with upstream mill.
41023	Lavant at Graylingwell	87.2	SU8706206450	487062.0	106450.0	50°51'03.6949"N 0°45'52.5793"W	50.85103	-0.76461	Lavant	Graylingwell	20.7	EA-SSD	255220018	41	1970-01-01		FV				true	true	true	true	false	false	false	false	false	false	false	false	false	G	1970-12-03	2023-09-30	0.339	0.0	1971-08-15	2023-09-30	7.779	2000-12-14	2000-12-14	0.0	0.0	0.001	1.02	1.556	0.82	19295	19295	100.0	1970-10-01		1.615	19.0	53.9	124.6	191.9	253.6	964	922	0.3107	0.3719	0.2692		0.0237	0.373	0.3583	0.2526	0.0027	0.0133	0.9172	0.0012		0.0817	0.0823	0.01		0.34	0.936	1.0	102.0	7.23	40.7	50.9	10.3	21.09	11.94	122	192	0.2	19.0	86.2	0.233	0.657	0.0336	0.0056	0.21	0.267	0.0075	0.599	0.571	1970..2001		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir gauging an ephemeral stream in a permeable catchment. Baseflow-dominated regime affected by significant groundwater abstraction.	Flat-V weir (crest width 5.0 m, cross-slope 1:10, maximum head 1m, capacity 6 cumecs). The River Lavant has a long history of flooding, the last major events occurring in 1960, 1994-5 and 2000.	Bypassing during extreme events (e.g. Jan 1994 and Nov 2000 when peaks were ~8 cumecs - based on current-meter gaugings). November 2000 event was gauged at 7.925 m3/s; bypassing of the gauge occurred at this time with further groundwater issuing from banks into the stream downstream of the gauge. Severe weed growth especially during summer can cause structure to drown out if not cleared. Structure suffers from velocity problems (underestimation of flow) at higher flows but this has been gauged. Gauge board had levelling problems in the past, this was amended following the rating review, May 2003. Major channel works carried out for Flood Alleviation scheme after 1994 flood; review in 2003 suggested rating should change in 1994 to accommodate channel clearance work. Two ratings applied across period of record, the most recent is valid from August-1994. Hydraulic modelling was used to derive upper limbs of the current rating.	Extended periods with zero flow as the stream is spring fed, which can give very low AMAX flows and no POT data are presented. Some years no flow altogether (e.g. WY1995/1996 and WY1996/1997). During summer 1963, low and medium flows were gauged by current meter on portable rods at weekly intervals until the Lavant dried up; gauging was continued on the downstream side of the Marsh Lane Bridge. Complete flow record from the 1970s. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	The Lavant is an ephemeral stream within a permeable catchment, with an upper steep chalk catchment on the South Downs above Westhampnett and a flat, gravel plain lower catchment. Land use is agricultural with significant woodland in the upper catchment; the lower catchment is far more developed, especially close to Graylingwell and Chichester. Church Farm Pit, a water filled worked out gravel pit, is a good indicator of groundwater levels in the lower catchment. The oldest known continuous groundwater level record exists at Chilgrove House, within the catchment. This record, dating back to 1836, gives early warning of flood flows for Chichester.	A winterbourne stream with baseflow-dominated regime but spring outflows can increase dramatically following exceptional rainfall. Runoff is substantially reduced by groundwater abstraction. Flood alleviation scheme for Chichester had been completed sufficiently by 1992-93 for water to be taken from the Lavant downstream of the weir, through culverts to Church Farm Pit, through Forebridge Rife and discharged to Pagham Harbour through Pagham Rife. The oldest known continuous groundwater level record exists at Chilgrove House, within the catchment. This record, dating back to 1836, gives early warning of flood flows for Chichester. The area to the east and south of Chichester has undergone large scale gravel extraction over the past 50 years, leaving many worked out pits either filled in and developed, or water filled. This has possibly enhanced groundwater levels as the bulk flow is now confined to narrow corridors between former workings.
41024	Shell Brook at Shell Brook	22.6	TQ3347728613	533477.0	128613.0	51°02'28.9542"N 0°05'50.8530"W	51.04138	-0.09746	Shell Brook	Shell Brook	37.5	EA-SSD	352835017	41	1971-01-01		FV		23.3	90.0	true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1971-07-01	2023-09-30	0.264	0.0	1990-01-03	1990-01-03	6.84	2008-01-15	2008-01-15	0.018	0.084	0.165	0.53	0.807	0.51	19085	19000	99.555				37.4	66.4	108.8	148.7	191.1	866	860	0.4102	0.2037	0.2677	0.0027	0.0673	0.378	0.1897	0.3684	0.0004	0.0238		1.0						0.36	0.508	0.764	93.7	40.97	36.8	49.5	12.0	8.58	4.8	108	195	0.23	37.4	22.85	0.063		0.0048	0.006	0.634	1.072	0.011	0.807	1.195			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir, runoff pattern changed fundamentally following the construction of Ardingly Reservoir (1978).	Flat-V weir, 1:10 cross slope, from summer 1995, modified from the existing Crump profile weir (crest: 4.0m broad), station level remains unchanged.	Presence of reservoir poses challenges for quality controlling data and for gauging.		Catchment is mainly permeable Hastings Beds with Wadhurst Clay in the valley. A rural, heavily wooded basin.	Runoff pattern changed fundamentally following the construction of Ardingly Reservoir (1978) immediately upstream.
41025	Loxwood Stream at Drungewick	91.6	TQ0599530912	505995.0	130912.0	51°04'03.9511"N 0°29'19.0505"W	51.06776	-0.48863	Loxwood Stream	Drungewick	13.1	EA-SSD	254240009	41	1972-01-01		CC		56.8	35.0	true	false	false	false	false	false	true	true	false	true	false	false	true	N	1971-12-14	2023-09-30	1.219	0.009	1995-08-25	1995-08-25	43.6	2009-02-10	2009-02-10	0.047	0.107	0.252	2.74	5.67	0.21	18919	18895	99.873				15.6	31.4	60.1	119.2	275.4	804	812	0.4356	0.2082	0.2891	0.0005	0.0585	0.442	0.1585	0.3509	0.0036	0.0437	0.1281		0.8719		0.0215			0.35	0.321	0.962	56.4	46.46	36.1	48.7	11.6	29.87	16.82	69	115	0.15	15.6	93.01	1.023	0.714	0.0937	0.0062	0.359	0.818	0.0178	0.709	1.048			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Asymmetrical compound Crump profile weir gauging a river with very responsive flow regime. Construction of an aqueduct u/s of the station may affect flood flows in the future.	Asymmetrical compound Crump profile weir, crest widths 2.0m and 4.0m. Located 50m upstream of road bridge, 20m upstream of canal aqueduct (built 2002). Upstream of the gauging station the river winds across the floodplain, the embankment of the Wey & Arun Canal (situated on the left edge of the flood plain) acts to reduce the floodplain. Downstream of the gauge the river narrows & meanders sharply across the floodplain. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Crest tapping present, no detectable fall across the crest. Structure insensitive at very low flows. Loxwood Stream is susceptible to siltation (e.g. in 2005). Approx. 150m downstream of the gauge a box culvert exists (5.3m wide, 2.9m high); this possibly has a smaller capacity than the gauge and may raise tailwater levels at the gauge. Full range - all but extreme flows contained; side bunds rise from the wing walls to give station capacity of ~57cumecs and contain larger flood events, forcing water through the gauging point - designed to overtop during very large events. Rated up to 149 cumecs although structure drowns at ~0.7m, invalidating rating on occasion (may result from construction of an aqueduct downstream; high levels in the Arun can also be a factor). One rating applied across period of record. Current rating uses hydraulic modelling beyond modular limit (0.7m) although it fits poorly to available gaugings.	Data estimated for Oct-Nov 1985. May-Oct 2005 flows are suspect due to siltation. Annual minimum (and 2004-06 drought minimum) in Oct 2005 accurate owing to flushing of stilling well.	A rural catchment composed predominantly of Weald Clay, with Lower Greensand, Hythe Sandstone & Atherfield Clay outcropping along the western & north-western watershed. The Weald Clay is mainly argillaceous but includes subordinate sandstones & silts.	Very responsive flow regime. Abstractions and discharges have a negligible impact on overall runoff but occasional anomalous behaviour at low flow. Aqueduct may affect flood flows in the future, as it restricts the downstream floodplain although at present it has been difficult to estimate its effect on flows, it may increase drowning.
41026	Cockhaise Brook at Holywell	36.1	TQ3765326163	537653.0	126163.0	51°01'06.1457"N 0°02'19.8928"W	51.01837	-0.03886	Cockhaise Brook	Holywell	28.6	EA-SSD	352840006	41	1972-01-01	2014-12-12	C		8.0	44.0	true	false	false	false	false	false	false	false	false	false	false	false	false	PG	1971-11-01	2012-12-24	0.409	0.008	1989-10-17	1989-10-18	8.06	2008-01-15	2008-01-15	0.052	0.111	0.206	0.897	1.41	0.52	15030	14813	98.556				29.3	54.9	95.2	158.3	201.8	847	851	0.3688	0.1971	0.3604	0.0044	0.0578	0.3106	0.1425	0.5178	0.0111	0.0142		1.0						0.35	0.442	0.888	97.6	42.76	35.4	47.2	11.7	11.42	6.58	100	205	0.27	29.3	36.44	0.182	0.546	0.0159	0.0055	0.424	0.823	0.0118	0.743	1.029			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir gauging a relatively undisturbed catchment with limited impact of abstractions and discharges.	Crump profile weir, crest 3.5m broad, for low and medium flows. Velocity area calibration for high flows. Removed from peak flows dataset in May 2016 (WINFAP Files v4).	Weir has very good, straight approach conditions, but becomes non-modular fairly quickly (approx. 0.5m / 2.65 cumecs). All flows contained - training banks were constructed when the station was built. New crest installed summer 2002, level remained the same. Good performance at low flows. Cableway was planned but never constructed, so velocity-area calibration for high flows has ceased and is incomplete; few check gaugings available due to issues of accessibility.	Nearly complete record, some years of partial data. High flows historically and continuing to be truncated at ~8 cumecs.	Geology is mixed, chiefly Hastings Beds; Also Ashdown Sands, Wadhurst Clay, Tunbridge Wells Sand. Catchment is almost half and half naturally impervious, and pervious with some mixed or intermediately pervious types. A rural catchment, mixed agriculture with considerable areas of woodland. Ardingley reservoir constructed in the catchment, completed 1978.	Undisturbed catchment, although some abstraction for public water supply (limited impact of abstractions and discharges on river flow; small net loss). OUSENAT flow naturalisation scheme 1992-1996.
41027	Rother at Princes Marsh	37.2	SU7723027032	477230.0	127032.0	51°02'14.8804"N 0°53'59.5940"W	51.03747	-0.89989	Rother	Princes Marsh	56.4	EA-SSD	254360008	41	1972-11-01		C		43.5	23.8	true	false	false	false	false	false	true	true	false	true	false	false	true	GE	1972-11-01	2023-09-30	0.544	0.077	1976-06-29	1976-06-29	21.0	2013-12-23	2013-12-23	0.151	0.23	0.328	0.997	1.555	0.59	18596	18579	99.909				58.9	70.9	98.7	157.4	246.8	932	907	0.2457	0.2838	0.311	0.0349	0.1153	0.2386	0.1799	0.4797	0.0364	0.0632	0.5416	0.2239		0.2346		0.0072		0.35	0.658	0.972	78.3	26.96	39.2	50.3	10.4	10.53	5.26	109	122	0.06	59.0	36.22	0.507	0.719	0.0612	0.013	0.41	0.55	0.0311	0.708	0.585			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir draining a predominantly Chalk catchment in the headwaters. Regime is responsive but dominated by baseflow.	Crump profile weir, crest 5m broad. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Large capacity structure, but modular limit is ~0.7m. Problem of drowning illustrated by spot flow data, 2003 rating review suggests due to road bridge 0.27 km downstream. This is thought to act as the hydraulic control at high flows. Downstream silt deposition during floods can occasionally cause temporary drowning also, however is soon removed by re-suspension under normal flows. Crest tapping present but not currently used. Bridge across centre of weir, not good for gaugings but good for maintenance. Hysteresis problems experienced at the site. Downstream head recorder installed, used to correct data for backwater effects. One peak flow rating applied across period of record. Rating derived from hydraulic modelling, mid-range gaugings suggest that the rating is seriously overestimating flows, but also some gaugings underestimate flows.	Flows > 6 cumecs should be treated with caution.	Geology is mixed, Chalk predominates in the headwaters. Upper Greensand, Gault Clay, Folkestone Beds, Sandgate Beds & Hythe Beds also present. Half of the catchment naturally impervious, half pervious. Land use predominantly rural with large woodland tracts and significant urban development in the lower catchment.	Significant baseflow but responsive regime. Abstractions and discharges have a minor impact on flows - small net loss. Runoff is increased by effluent returns; station is adjacent to sewage works at Petersfield UDC.
41028	Chess Stream at Chess Bridge	24.0	TQ2166717269	521667.0	117269.0	50°56'31.3251"N 0°16'10.6562"W	50.94203	-0.26963	Chess Stream	Chess Bridge	4.6	EA-SSD	253211017	41	1964-01-01		TPFL		13.0	11.8	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1964-11-27	2023-09-30	0.279	0.003	1973-08-20	1989-09-02	9.09	2022-11-16	2022-11-16	0.022	0.058	0.111	0.646	1.163	0.39	21492	21004	97.729				6.2	14.1	36.9	70.6	205.3	844	849	0.1598	0.363	0.4173		0.0551	0.127	0.3768	0.4707	0.0005	0.0245	0.4727	0.1341	0.2121	0.1811				0.34	0.496	0.983	46.9	36.08	36.5	46.8	11.4	11.71	6.78	43	334	0.33	6.2	25.01	0.781	0.725	0.0973	0.0125	0.578	0.926	0.0135	0.718	0.823			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The station was refurbished between July 2004 and December 2004 and the separate flume and weir were replaced with a combined concrete structure. Weed growth downstream can be a problem at high flows. Very responsive regime but with spring-fed baseflow.	Central notch for summer/low flows inside a higher wider weir section for winter/high flows, total width approx 3.36m. Located 100m downstream of Chess Bridge. Prior to 2004, the station consisted of two separate structures - rectangular flume and compound thin-plate weir, the weir was lowered into the flume for low flows (normally in place May to November). Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Flows remain modular at all but highest flows, when structure suffers from drowning and significant bypassing. Weed growth downstream can be a problem at high flows, although the drop over the weir crest is generally sufficient to prevent drowning at normal flows. Downstream water levels are not recorded at the station, it has been assumed in the past. Multiple ratings applied across period of record. Pre 2004 theoretical ratings for summer and winter applied. Post 2004, when a combined concrete structure was installed, a combined rating has been applied. Few gaugings available to confirm rating.	Some partial data in 1980's and 1990's. Pre-1994 station design resulted in some discontinuities in processed flows.	Very mixed geology; the Chess Stream rises on the Chalk scarp of the South downs but lower catchment is largely impervious clay. Agriculture is the predominant land use; small but increasing urban fraction. Chalk outcropping along the southern watershed provides baseflow.	Very responsive regime but with spring-fed baseflow. No significant abstractions, very minor effluent contribution to runoff from sewage treatment works upstream. Upstream penstock operation can influence flow. Natural to within 10% at Q95. Possible irrigation abstraction upstream during summer months.
41029	Bull at Lealands	40.8	TQ5764213034	557642.0	113034.0	50°53'42.9957"N 0°14'24.8040"E	50.89528	0.24022	Bull	Lealands	18.2	EA-SSD	351540001	41	1978-10-06		FV		58.9	35.0	true	false	false	false	false	false	true	true	true	true	false	false	true	N	1978-10-06	2023-09-30	0.467	0.009	1995-08-22	1996-07-27	17.7	2000-10-12	2000-10-12	0.03	0.075	0.168	1.07	1.844	0.37	16431	16431	100.0				18.7	33.6	57.4	103.6	170.8	820	819	0.2371	0.1906	0.5034		0.0486	0.2012	0.2341	0.5563		0.006		0.9721	0.0279					0.34	0.45	0.99	56.2	42.67	36.1	47.6	11.5	14.05	7.79	63	179	0.28	19.5	40.35	0.635	0.727	0.0597	0.0091	0.299	1.275	0.0091	0.608	1.328			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir, constructed in 1978.	Flat-V weir, (crest width: 5m, cross-slope 1:10). Both upstream and downstream stilling wells present, but only upstream well still in use.	Theoretically rated, all flows contained by structure and upstream by artificial embankment; very good high flow performance. Not many gaugings due to site access difficulties at high flows; downstream fields inundated as river goes out of bank. Some eddying immediately upstream of structure causes occasional reverse flows.	Data estimated for Feb-Apr 2001, in place of missing data due to Foot & Mouth restrictions. Jun 1989 flows under review.	Rural catchment draining the High Weald. Mixed geology.	An essentially natural and responsive flow regime with minimal abstraction.
41030	Ouse at Ardingly	37.2	TQ3328828283	533288.0	128283.0	51°02'18.4352"N 0°06'00.9892"W	51.03845	-0.10027	Ouse	Ardingly	35.2	EA-SSD	352835027	41	1979-08-01		FVUS		25.0		true	false	false	false	false	false	false	true	false	false	false	false	false	P	1979-08-01	2023-09-30	0.414	0.0	2018-02-08	2018-02-13	20.9	2008-01-15	2008-01-15	0.016	0.057	0.131	0.995	1.68	0.34	16132	15964	98.959				35.5	53.0	81.7	123.1	156.2	848	843	0.3123	0.2646	0.3335	0.0009	0.0651	0.222	0.3337	0.4238	0.0002	0.0149		0.8307	0.1693					0.36	0.48	0.964	72.3	40.31	38.4	49.8	11.9	13.68	7.13	85	116	0.11	35.5	37.53	0.391	0.786	0.0397	0.0116	0.479	0.978	0.0127	0.734	1.044			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir replaced (in 1993) a compound broad-crested weir. Downstream of rarely used abstraction which feeds directly to Ardingly Reservoir.	Flat-V weir fitted with ultrasonics for high flow measurement in 2010.	Weir thought to drown at high flows. Difficult to reach gauging station at high flows.
41031	Fulking Stream at Fulking	1.0	TQ2475111408	524751.0	111408.0	50°53'19.3104"N 0°13'39.9183"W	50.8887	-0.22776	Fulking Stream	Fulking	49.7	EA-SSD	253125007	41	1968-05		VN				true	false	false	false	false	false	false	false	false	false	false	false	false	G	1968-05-01	2022-09-30	0.013	0.0	1990-08-25	1990-10-24	0.181	2009-02-09	2009-02-09	0.003	0.006	0.009	0.028	0.034	0.89	19876	17850	89.807																																									52.7	0.19												gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	90-degree V-notch thin-plate weir (originally intended to be temporary).	Chart recorder only. Replaced by similar structure downstream (in 2000) - less, prone to vandalism (originally sited in pub garden - hence missing data).		Highest flows on record at start and end of 2009 are estimated and should be treated with caution; status as highest flows on record likely a result of significant periods of missing data, particularly across 2000/01 high flows.	Very small catchment draining the north-facing escarpment of the South Downs (Chalk). Catchment area feeding spring is undetermined and varies seasonally (estimated 1 sq.km). Rural, agricultural land use.	Occasionally responsive but baseflow dominated regime (contributing area may differ appreciably from topographical catchment area), possibly influenced by groundwater abstraction.
41033	Costers Brook at Cocking	2.7	SU8795817464	487958.0	117464.0	50°56'59.6746"N 0°44'57.2302"W	50.94991	-0.74923	Costers Brook	Cocking	52.0	EA-SSD	254333004	41	1973-01-01		FVVA			70.0	true	false	false	false	false	false	false	false	false	false	false	false	false	G	1973-07-01	2023-09-30	0.066	0.002	1989-10-16	1989-10-16	0.549	2023-01-16	2023-01-16	0.015	0.028	0.047	0.14	0.178	0.89	18354	16332	88.983				52.8	66.6	121.7	202.0	235.6	996	965	0.2285	0.4411	0.2569		0.0502	0.2436	0.3213	0.3913	0.0076	0.0362	0.8747	0.1253						0.34	0.892	1.0	136.9	10.5	40.3	51.9	10.4	3.29	1.7	130	358	0.25	52.8	2.74	0.101	0.534	0.0146	0.005	0.286	0.168	0.021	0.675	0.186			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir, chart recorder only.	Crump weir, crest width 1.22m. Chart recorder only. Damaged during Oct 1987 storm, subsequently reinstated but significant leakage around structure. Weir renovated in Jun 1996 to prevent leakage.			Spring fed stream, issuing from north-facing scarp slope of the South Downs (Chalk).	Baseflow-dominated flow regime, influenced by groundwater abstraction. Catchment area topographically derived; true contributing area likely to differ and be subject to seasonal flux.
41034	Ems at Walderton	41.5	SU786104	478600.0	110400.0	50°53'15.8997"N 0°53'02.1822"W	50.88775	-0.88394	Ems	Walderton	34.3	EA-SSD		41	1966-01-01	1984	C				true	false	false	false	false	false	false	false	false	false	false	false	false		1966-12-01	1984-01-30	0.073	0.0	1967-06-13	1984-01-30	0.88	1969-02-01	1969-02-01	0.0	0.0	0.0	0.25	0.429	0.83	6270	6251	99.697				34.3	64.7	114.5	164.6	241.8	991	931	0.2692	0.4368	0.2673		0.0092	0.3052	0.4596	0.2322	0.0009	0.002	1.0					0.0208		0.34	0.957	1.0	98.1	5.81	40.9	52.1	10.1	11.56	6.0	114	203	0.28	34.3	41.46	0.189	0.659	0.0267	0.0083	0.413	0.706	0.0026					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station decommissioned in 1984.	Small pre-fabricated Crump weir (welded steel) monitoring the headwater flows of the Ems.			The Ems drains the dip slope of the South Downs (Chalk).	Ephemeral with lengthy periods of zero flow.
41035	North at Brookhurst	53.93	TQ1296332526	512963.0	132526.0	51°04'51.3990"N 0°23'19.3756"W	51.08094	-0.38872	North	Brookhurst	25.1	EA-SSD	254260001	41	1983-01-01	2015-01-22	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1983-10-11	2015-01-22	0.583	0.0	1995-08-09	1996-07-02	20.6	2013-12-24	2013-12-24	0.007	0.04	0.102	1.52	2.66	0.21	11427	11004	96.298				25.8	45.8	77.7	148.8	291.4	821	816	0.3155	0.271	0.3494	0.0006	0.0532	0.2506	0.2746	0.4605	0.003	0.0081	0.0856		0.9144		0.0172			0.36	0.319	0.956	61.1	45.49	34.5	45.7	11.4	21.6	12.01	87	176	0.22	25.8	54.8	0.453	0.96	0.0428	0.0033			0.0083	0.626	0.972			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir, station closed in 2015.	Flat V weir, 1:10 cross-slope, 5m wide. Large modular range.		Trace flows recorded in Aug 1995 and Jul 1996.	A mainly impervious catchment developed on Weald Clay (some Horsham Stone). Rural with significant woodland and a number of small lakes.	Very responsive regime with a minor baseflow component (from the Greensand in the upper catchment). No major abstractions or discharges.
41037	Winterbourne Stream at Lewes	17.3	TQ4032909584	540329.0	109584.0	50°52'07.4436"N 0°00'25.6090"W	50.86873	-0.00711	Winterbourne Stream	Lewes	10.8	EA-SSD	352622003	41	1966-10-27		FV				true	false	false	false	false	false	false	false	false	false	false	false	false	G	1966-10-27	2023-09-30	0.118	0.0	1967-07-25	2023-09-30	3.57	2000-11-08	2000-11-08	0.0	0.0	0.0	0.337	0.602	0.64	20793	19033	91.536				8.7	48.9	96.6	154.1	211.9	909	904	0.1229	0.4634	0.3664		0.0345	0.0703	0.2055	0.7027		0.0209	1.0							0.34	0.966	1.0	124.3	5.04	37.9	50.5	11.4	7.45	4.08	98	136	0.16	9.0	17.48	0.067	0.624	0.0074	0.0097	0.284	0.123	0.0105	0.346	0.104			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir replaced (in 1997) twin-crested crump weir.	Flat-V weir replaced (in 1997) twin-crested (both 1.22m) Crump weir of steel construction (originally intended as temporary structure). Originally chart recorder only, but data logger replaced this in Jan 2007.	Modular except for very high flows - when drowning can result from backing-up due to downstream culvert.	Extended periods with zero flow; river can be dry in summer and dry winters (e.g. 2004/05 and 2005/06).	The Winterbourne drains the Chalk of the South Downs - negligible Drift cover. Some urbanisation near the catchment outfall. Significant arable farming in the valley.	Baseflow-dominated regime. Runoff reduced by significant groundwater abstractions.
42001	Wallington at North Fareham	111.0	SU5874607460	458746.0	107460.0	50°51'49.2172"N 1°09'59.8735"W	50.86367	-1.16663	Wallington	North Fareham	3.7	EA-SSD	153309001	42	1951-01-01		FV	10.0	9.2	25.0	true	true	true	true	false	true	false	true	false	true	false	true	true	G	1951-10-01	2023-09-30	0.627	0.0	1976-06-30	1976-07-03	18.6	2000-11-06	2000-11-06	0.034	0.113	0.259	1.57	2.492	0.41	26298	26086	99.194	1951-09-01		17.93	4.5	29.7	57.2	125.5	235.2	863	819	0.157	0.4026	0.3001		0.113	0.1561	0.3989	0.3449	0.0032	0.0965	0.5004			0.4996	0.0115	0.042		0.34	0.639	0.979	46.9	24.23	35.2	45.8	9.2	24.32	13.29	69	200	0.26	4.5	111.67	0.515	0.822	0.0682	0.0392	0.639	1.036	0.0526	0.853	1.038	1950..1989	1951-09-01..1990-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir installed 1991, 250m upstream of the M27 river crossing. Flashy response but with appreciable baseflow.	Flat-V weir (1:10 cross slope, 6 m wide) installed 1991, 250m upstream of the M27 river crossing. Replaced a compound critical depth flume with total crest width 4.8m, comprising central low flow channel and two side channels (0.39 m above central channel) which operated from 0.567 m3/s and was occasionally blocked by debris.	Modular limit 1.0m, stage peaks truncated at ~20 cumecs; weir drowns. Numerous potential bypassing locations u/s of the gauge; bypassing occurs before water level reaches the top of wing walls. Upstream of the station floodplain is typically less than 150m wide and river meanders from one side to the other. Flooding exacerbated by Wallington Bridge 1km d/s of the weir, and spring tides can extend u/s of the bridge. Between the gauge and M27 crossing the river consists of a series of interconnected pools with mobile channel bed, considerable bank erosion and debris in the channel. A 3m section of bank u/s of the station has been stabilised with rock and concrete, the d/s bank has been stabilised with loose rock covered by fencing. Bridge across weir can make current meter measurement difficult in flood flows. Two peak flow ratings applied across period of record, the most recent is valid from November-1991. Current rating developed from hydraulic model and confirmed by gaugings.	Peak flow data only available from October 1976 onwards. Pre-1991, flows were truncated at ~10 cumecs (due to bypassing via the upstream eastern bank) and estimated using 42003. No data 20/07/91-03/12/91 due to station reconstruction. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Permeable headwaters (Chalk) with impervious Eocene clays dominating below the headwaters. Upper Chalk with isolated patches of clay-with-flints covers northern half of catchment & a narrow belt on Southern boundary. Reading Beds (predominantly clays), London Clay, Bagshot Sand & Bracklesham Beds (sands & clays) occur between the two chalk outcrops, with alluvium dominating the valleys. On leaving the central basin the river cuts through the edge of the Portsdown Chalk ridge and flows over Tertiary clays into the sea. A largely rural catchment, but with an expanding developed area encompassing Waterlooville, Denmead & Purbrook in the headwaters.	Flashy response but with appreciable baseflow - zero flow in 1976 only. Groundwater catchment smaller than topographic catchment. In the upper catchment, runoff is negligible, except during wet winters when the bournes or lavants (seasonal streams) are running. Ground water abstraction causes a net diminution in runoff. Spray irrigation can significantly reduce summer flows. No direct surface water abstractions. Runoff from M27 motorway, 200m downstream of weir. Springs at Havant derive water from the Wallington area, therefore the Wallington is not typical of the area as a whole.
42003	Lymington at Brockenhurst	98.9	SU31780192	431780.0	101920.0	50°48'57.4580"N 1°33'00.9345"W	50.81596	-1.55026	Lymington	Brockenhurst	6.1	EA-SSD	150509001	42	1960-01-01		TPVA	7.9	7.1	18.3	true	true	true	true	false	true	true	true	false	true	true	true	true	N	1960-10-01	2023-09-30	1.137	0.006	1962-07-21	1976-08-26	28.0	1999-12-24	1999-12-24	0.055	0.207	0.481	2.9	4.81	0.34	23010	22840	99.261	1960-10-01		24.95	8.5	18.4	41.8	89.6	117.7	873	854	0.5609	0.0364	0.179	0.1665	0.0561	0.5159	0.017	0.1716	0.2715	0.0239				1.0	0.2149		0.0062	0.33	0.387	0.997	37.6	39.18	36.9	46.8	10.5	19.89	9.99	48	120	0.18	8.5	99.87	0.846	0.711	0.1072	0.0035			0.0131	0.747	0.704	1975..1994	1975-10-01..1995-10-01	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound rectangular thin-plate weir installed in 1996, replacing original station from 1959. Catchment drains the New Forest with a responsive regime and limited baseflow.	Compound rectangular thin-plate weir, width 7.3m, installed in 1996; channel geometry and course immediately upstream straightened, but no change in hydrological regime or characteristics. Pre-1996: a thin-plate weir with V-notch (no divide piers) - total breadth 8.48m - primarily for low and medium flows. Installed with punch-tape recorder which provided flows from theoretical relationship. No stage records available until digital logger installed in 1982. Flood Studies Report Grade E for pre-1996 structure.	Flood water bypasses the station in several braided channels through the forest - photo 6 shows typical high flows on the Lymington through the forest. Water goes out of bank during highest flows most years. Two ratings applied across period of record, the most recent is valid from October-1996 when new weir built. Rating based on spot flow gaugings with all high flow gaugings for new weir (up to ~30 cumecs). High flows gauged upstream where bypassing does not occur. Reasonably confident in current rating.	Peak flow data for pre-1996 are not provided; little confidence in flows above 7 m3/s. Historic lack of homogeneity at high flows (bypassing occurs above 7 cumecs and most pre-1980 flows truncated at ~10 cumecs) but high flow rating now in place and performs well. Original station opened in Feb 1959, but intermittent record until Oct 1960. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Principally an impervious catchment (Tertiary clay; sand and gravel), overlain between the valleys by extensive sheets of plateau gravels. A quarter of the catchment is naturally impervious, the remainder is divided between mixed or intermediate permeability and naturally pervious. This is the only catchment in Hampshire with barely any chalk. Large tracts of heathland and forest with valley bogs in the New Forest. Land use mainly pasture with scattered small settlements; Brockenhurst is the only significant town. Large areas on either side of the channel are under water during high flows and the waterway through the 'forest' is almost impossible to assess.	Responsive regime with limited baseflow. Artificial influences have a negligible impact on flows but land drainage has a long history within the catchment (and some wetland restoration began in 1997). A very small sewage works at Brockenhurst is insignificant. Natural to within 10% at Q95.
42004	Test at Broadlands	1040.0	SU35411886	435410.0	118860.0	50°58'05.0742"N 1°29'49.5527"W	50.96808	-1.4971	Test	Broadlands	10.1	EA-SSD	151816001	42	1957-01-01		VA	26.5			true	false	false	false	false	true	false	false	true	true	true	true	true	N	1957-10-01	2023-09-30	11.162	3.78	1976-07-07	1976-07-07	36.76	2009-02-10	2009-02-10	5.72	7.888	9.811	17.46	21.21	0.94	24106	24082	99.9				7.3	55.1	100.4	170.3	296.4	818	790	0.1492	0.4622	0.308	0.0019	0.0437	0.1382	0.5717	0.2551	0.0042	0.03	0.9135	0.0009		0.0857	0.0348	0.1095	0.0361	0.34	0.899	0.969	50.1	9.4	33.3	43.1	10.6	71.93	40.96	108	176	0.15	8.0	1034.71	0.458	0.828	0.0637	0.0101	0.56	0.845	0.0156	0.748	0.865			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, affected by severe weed growth and uneven velocity distribution.	Velocity area station.	Difficult to calibrate - severe weed growth and an uneven velocity distribution, but adequate at low flows. Hence flows from adjacent electromagnetic station (42013) often used to estimate or infill the Broadlands record. Six M27 motorway bridges capture all flow in River Test, even at high flows, using ultrasonic gauges.	Daily mean flow series calculated from daily mean stage rather than 15-min flows. As such, instantaneous peak flows unavailable. Flows can exceed 30 cumecs in very wet winters, e.g. 2000/01 and 1960/61 (when flows estimated).	Highly permeable catchment (mostly Chalk) but with some Tertiary deposits and some patchy Drift cover - alluvium in the lower valley. Downland given over largely to agriculture with a few urban centres.	Baseflow dominated regime but some rapid runoff from the lower reaches of the Dun catchment. Topographic catchment slightly exceeds the drainage area. Considerable fish farming activity but sensibly natural flow regime.
42005	Wallop Brook at Broughton	53.6	SU31103302	431100.0	133020.0	51°05'44.3391"N 1°33'26.1503"W	51.09565	-1.55726	Wallop Brook	Broughton	35.9	EA-SSD	151808001	42	1955	2012-07	TP	3.1	1.8	70.0	true	true	false	true	false	false	false	false	false	false	false	false	false	G	1955-10-01	2011-12-31	0.378	0.0	1976-06-01	2011-08-21	3.28	2000-12-08	2000-12-16	0.02	0.139	0.283	0.813	1.019	0.93	20546	18569	90.378	1955-10-01	2012-07-31	0.982	37.7	65.3	83.5	115.3	172.4	801	770	0.0581	0.3944	0.4666		0.0204	0.0301	0.5914	0.3488	0.0041	0.0257	1.0							0.34	0.955	1.0	42.6	6.02	32.8	43.9	10.6	12.29	6.88	87	132	0.22	37.7	53.46	0.265	0.951	0.0537	0.0056	0.338	0.674	0.0085	0.611	0.879	1996..1999		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular thin plate weir draining an entirely pervious Chalk catchment. Runoff is influenced by groundwater abstraction/recharge.	Rectangular thin plate weir without end contractions. Station closed for peak flows in July 2012.	Wide chalk stream with bypassing at very high groundwater levels, but generally a good flow range. Crest length previously thought to be 4.87m, but confirmed as 6.009m in early 2002. Downstream weed growth can raise tailwater levels. Upper limit of the weir 0.3m, maximum flow measurable 1.812 cumecs. Bypassing occurs at exceptionally high flows. Upper limit of the chart recorder has been exceeded on two occasions (late 1960 floods). Single rating applied across period of record. Few gaugings exist but confirm rating to 0.13m. Flood Studies Report grade B.	All flows recalculated following confirmation of crest length (2002). Flows estimated during late 1960 floods (when chart recorder limit exceeded). Sporadic missing data 1992 - 1997 due to recording problems. Site has a long record; some data 1955 to present, digital data 1986 to present. Data infilled from Bossington from 01/01/07 to 02/01/08.	The Wallop Brook drains a completely pervious catchment composed entirely of Upper Chalk with very little cover of clay-with-flint. Topographical catchment exceeds the groundwater catchment, which may be only 36 sq km. Typical open downland of a rural character, the 'Wallops' are the only significant settlements. Increasing urbanisation within the catchment.	Runoff influenced by groundwater abstraction/recharge - PWS borehole 1km upstream. Some spray irrigation has a minor impact.
42006	Meon at Mislingford	72.8	SU5892714112	458927.0	114112.0	50°55'24.4709"N 1°09'46.7599"W	50.92346	-1.16299	Meon	Mislingford	29.3	EA-SSD	152803001	42	1958-01-01		FV	4.1	4.6	15.0	true	true	true	true	false	false	false	true	false	false	false	false	false	G	1958-10-01	2023-09-30	0.998	0.053	1976-08-06	1976-08-07	7.646	2003-01-01	2003-01-01	0.203	0.438	0.74	2.066	2.55	0.93	23741	23741	100.0	1958-10-01		2.889	29.5	64.0	111.2	170.6	258.4	925	896	0.1176	0.4054	0.4103		0.0438	0.0999	0.469	0.4186	0.0023	0.0101	0.9788	0.0095		0.0117		0.0598		0.34	0.952	0.979	84.0	5.54	36.6	49.4	9.6	25.22	13.37	113	237	0.16	29.5	75.85	0.359	0.907	0.0488	0.0032			0.0088	0.571	0.849			gdf;gmf;cmr;cdr;cdr-d;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir draining a predominantly permeable catchment. Flow regime more flashy than nearby Test and Itchen due to some areas of lower permeability.	Flat-V weir (breadth: 6.6m, theoretically rated - also gauged to 0.56m) upstream of a small five-arch bridge. Superseded (in November 2000) a critical depth flume (breadth: 3.66m, theoretical rating - flow limit: 5.7 cumecs). The flume was infrequently bypassed via the upstream left bank at flows above 0.77m.	Artificial embankment on left bank keeps flows fairly well contained, although water ponds on adjacent fields but without bypassing. Weed growth immediately upstream does not affect gauging station. Weir can suffer from weed growth on the crest and movement of stream bed in the upstream channel. Upstream channel conditions are not ideal for gauging. Since weir constructed in 2000, theoretical rating based on hydraulic calculations is applied. Present structure check-gauged to 0.83m. Previous structure (rectangular critical depth flume) was also rated theoretically.	Data missing during rebuilding phase for new weir (completed November 2000). Some stage data missing during Dec 2000 flood but ~11 cumecs gauging completed near peak. Before Nov 1982 flows were recorded directly on the chart. Levels recorded from Nov 1982. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	River Meon down to Mislingford is a groundwater-dominated chalk stream although flows are relatively more variable than the Test and Itchen due to its hydrogeological setting and elevation above sea level. Predominantly permeable catchment, nearly all Chalk (pervious) but considerable outcrops of the less permeable Lower & Middle Chalk, causing a flashy response. Some superficial cover. Impervious Reading beds in the south. A rural catchment with some uncultivated downland and scattered settlements.	Groundwater abstraction has noticeable impact on flow regime; small net export of water from the catchment.
42007	Alre at Drove Lane Alresford	57.0	SU5743332607	457433.0	132607.0	51°05'23.6717"N 1°10'52.7564"W	51.08991	-1.18132	Alre	Drove Lane Alresford	56.5	EA-SSD	152202001	42	1970-01-01		C			3.9	true	true	true	true	false	false	false	false	false	false	false	false	false	RG	1970-01-01	2023-09-30	1.608	0.736	1976-08-26	1976-08-28	4.69	2014-02-11	2014-02-11	0.963	1.303	1.514	2.243	2.495	0.98	19631	19597	99.827	1969-05-30		2.491	55.5	87.2	123.5	174.8	212.5	877	857	0.098	0.5621	0.2844	0.0004	0.041	0.0961	0.6041	0.2719	0.003	0.0233	1.0					0.1417	0.027	0.34	0.964	0.864	50.4	4.85	35.5	46.8	10.3	12.69	7.07	126	251	0.28	57.3	57.45	0.167	0.838	0.0281	0.0067	0.444	0.505	0.0159	0.623	0.724	1969..1978	1969-10-01..1978-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combination of flows from main and side weir on the largest tributary on the Itchen. Gauges a predominantly Chalk catchment with baseflow dominated regime.	Combination of a main weir (2.5m wide Crump) and side weir (1.5m wide Crump).	Bypassing occurs on the side weir component, but across the combined record bypassing is not significant. Using the two gauges flood flows are contained. Monthly current meter gaugings available from 1956. Theoretical ratings for both Crump weirs.	Total flow obtained by recording the annual maximum on the large weir & then deriving the appropriate level on the smaller side weir. Annual maxima largely derived by taking highest stage on 2.5m weir and using highest stage on corresponding day at 1.5m weir. Pre-1979 data available from main weir only and therefore peak flows are marked as rejected. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The River Alre is the largest tributary of the River Itchen. Principally a permeable catchment (Upper Chalk overlain in patches by clay-with-flints). Groundwater catchment area substantially exceeds topographical catchment area. Rural character - rolling downland of mixed farming; some woodland. Very limited urbanisation - but concentrated near to the gauging station.	Baseflow-dominated regime with narrow flow range but local surface runoff can generate very transitory peaks. From 1989, groundwater augmentation during drought conditions. Extensive watercress beds may attenuate flood flows. Spray irrigation may affect flows. Artesian wells present in catchment. Alre receives sewage from Alresford to Otford.
42008	Cheriton Stream at Sewards Bridge	75.1	SU5736232235	457362.0	132235.0	51°05'11.6562"N 1°10'56.6178"W	51.08657	-1.18239	Cheriton Stream	Sewards Bridge	55.8	EA-SSD	152201001	42	1970-01-01		C	2.8	2.8	11.6	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1970-07-01	2023-09-30	0.68	0.146	1976-08-23	1976-08-26	4.564	2000-12-14	2000-12-14	0.284	0.441	0.579	1.106	1.367	0.96	19450	19450	100.0	1956-01-01		1.367	56.9	83.6	115.5	174.0	220.5	921	885	0.1327	0.5035	0.2943		0.0329	0.1163	0.6421	0.2263	0.0019	0.0134	1.0	0.0				0.2126	0.0107	0.34	0.941	0.995	54.2	6.89	37.0	48.9	9.9	21.67	10.34	121	292	0.14	56.9	74.34	0.259	0.824	0.0403	0.0042			0.0086	0.695	0.43	1980		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir measuring a permaeable catchment with very stable flow regime. Surface runoff can generate minor hydrograph spikes.	Granite crested Crump profile weir (crest width 3.0m), with an approach channel approx. 2.6 times the crest width.	Good hydrometric performance, all flows contained but drowns at high flows (e.g. 2000) due to backing up from confluence with larger channel downstream. Downstream level recorder installed. Corrections made for algal growth noted on sill. Some sand deposits in approach channel. Possible downstream weed problems, unless cut regularly (regular cutting in past). Theoretical rating for a Crump weir. Confirmed by spot flows to 0.45m and probably valid to bankfull (0.77m).	A monthly series of gaugings available from the measuring authority from 1956. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	A very permeable (Upper Chalk) catchment - isolated patches of Clay-with-Flints occur on high ground. Rural land use; arable, with considerable downland and woodland areas (but Alresford is adjacent to the station). Contributing area differs considerably from topographical catchment.	The Cheriton Stream is ephemeral in its upper reaches. Very stable regime (surface runoff can generate minor hydrograph spikes). Low flows influenced by neighbouring River Itchen augmentation scheme (from 1989), which causes a slight reduction in discharge. Industrial abstraction & cress farming may have a small influence on flows.
42009	Candover Stream at Borough Bridge	71.2	SU5687532346	456875.0	132346.0	51°05'15.4233"N 1°11'21.5836"W	51.08762	-1.18933	Candover Stream	Borough Bridge	54.4	EA-SSD	152203001	42	1970-01-01		C	4.6	4.6	13.0	true	true	true	true	false	false	false	true	false	true	false	false	true	RG	1970-10-01	2023-09-30	0.591	0.19	1992-08-21	1992-08-21	4.29	2014-02-18	2014-02-18	0.285	0.414	0.506	0.934	1.09	0.96	19358	19358	100.0	1956-10-01		1.065	55.3	93.4	141.4	181.8	207.4	876	819	0.1413	0.5141	0.284		0.04	0.1526	0.6533	0.188	0.0029	0.0029	1.0				0.0252	0.2811	0.0171	0.34	0.951	0.93	52.2	6.06	34.3	43.3	10.6	25.69	15.45	139	235	0.12	55.3	72.06	0.253	0.927	0.0392	0.0021			0.0106	0.613	1.126			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir draining unresponsive Chalk catchment. Runoff influenced by groundwater abstraction and Itchen groundwater augmentation scheme.	Crump profile weir (crest: 2.99m broad) located 100m downstream of bridge.	Upper stage limit 0.95m, modular throughout the range. All flows contained and no bypassing. Good record. Theoretical rating for Crump weir. No rating for natural section pre-1970. Confirmed by gaugings to 0.47m.	Frequent spikes appear on trace from March 1974 probably due to opening of cress beds immediately upstream. Monthly gaugings available from 1956, prior to weir construction. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Groundwater & topographical catchments differ considerably. An unresponsive catchment; Upper Chalk with some patches of superficial deposits such as clay-with-flint, 100% pervious. Many perennial springs, often supporting cress beds. Predominantly rural land use with some woodland.	Runoff reduced by surface and groundwater abstractions. Impact of Itchen groundwater augmentation scheme is important in notable droughts e.g. 1976, 1989, 2005, 2011 and dry summers e.g. 1989. Spray irrigation.
42010	Itchen at Highbridge & Allbrook Total	360.0	SU4612921122	446129.0	121122.0	50°59'15.5717"N 1°20'39.0170"W	50.98766	-1.34417	Itchen	Highbridge & Allbrook Total	16.8	EA-SSD	152208001	42	1958-01-01		C+TP			4.9	true	true	true	true	false	true	true	false	false	false	true	true	true	RPG	1958-10-01	2023-09-30	5.545	2.167	1976-08-24	1976-08-24	21.87	2014-02-12	2014-02-12	3.02	4.132	5.019	8.33	9.578	0.96	23741	23649	99.612	1958-10-01		9.479	13.5	57.9	106.0	169.3	220.5	874	834	0.1042	0.4438	0.3609	0.0001	0.0723	0.1169	0.5876	0.2425	0.0031	0.0494	0.9923	0.0		0.0077	0.0114	0.1312	0.0385	0.34	0.949	0.949	54.0	6.09	34.8	45.3	10.1	50.5	29.1	111	247	0.11	14.1	339.9	0.373	0.8	0.0513	0.0143	0.014	0.573	0.0289	0.773	0.648			gdf;gmf;cmr;cdr;cdr-d;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combination of flows from two stations at Highbridge and Allbrook. Gauges a predominantly Chalk catchment with baseflow dominated regime and complex water utilisation.	Combination of flows from main weir (4.75m Crump) and side weir (1m Crump). Full range station. Since 2017 the side channel is routinely drowned due to weed growth in the channel downstream of the weir.	Combined site contains most flows (rare bypassing resulted from wrong sluice settings). Bypassing very rare, including in Dec 2000 - remarkable peak flow confirmed by gauging; good performance across flow regime. Both sites gauged up to 100-150% above what had previously been gauged in the 2000 event. River banks are very low, typically 20-30cm, summer levels often higher than winter due to weeding. However, flooding on any scale is rare. Both weirs rated theoretically and ratings confirmed by gaugings.	Flows for Allbrook for Nov/Dec 1993 were estimated due to fish pass construction. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	The River Itchen rises from springs above Alresford, its 3 main tributaries are the Candover Stream, Cheriton Stream & the River Alre. River Itchen begins at their confluence above Alresford. Very permeable catchment (<10% mixed permeability). Mostly Chalk, with sparse clay-with-flints cover on the eastern border. Tertiary deposits, mostly clay, overlie chalk at southern end of catchment. Groundwater catchment (~490 sq. km), exceeds topographical catchment (360 sq. km). Land use mainly arable with scattered settlements (but Winchester is just upstream). Digital catchment created from separate DTM-derived catchments for compound structure sites.	Baseflow-dominated regime. Groundwater augmentation possible during droughts, but has never been used. Artificial influences (groundwater abstractions, cress farms) have moderate but increasing impact on regime. Small net export of water. A new flow condition at a major abstraction at Otterbourne upstream will reduce abstraction in drought years from 2018 and close it entirely once in 150 years. Flow augmentation from groundwater during droughts, a 2nd augmentation scheme (Candover) was developed in 1976, importing groundwater from the Alre catchment. Reinstated in 1989 drought, contributing about 0.15 cumecs to the Itchen flows. FIRAS augmentation scheme from 1989 provided groundwater support (derived from the Alre sub-catchment), estimated to have increased flows at Highbridge by 0.46 cumecs. Groundwater abstractions for public water supply & cress farms have minor, but increasing impact on baseflow dominated regime; small net export of water. Strong fishing influence on river management, the Itchen one of the country's premier game fishing rivers. 2 common hatch sluice gates 750m upstream of site, release water from the navigation channel, to regulate water levels in the old canal. Culvert between Allbrook & Highbridge spills water into the flood plain causing bypassing at approx. 0.5 cumecs - plans in place to halt this.
42011	Hamble at Frogmill	56.6	SU5228014926	452280.0	114926.0	50°55'53.1214"N 1°15'26.7603"W	50.93142	-1.25743	Hamble	Frogmill	9.4	EA-SSD	152502001	42	1972-01-01		C	5.5	4.7	29.2	true	true	false	true	false	false	false	true	false	false	false	false	false	G	1972-09-01	2023-09-30	0.507	0.023	1989-09-13	1989-09-13	11.89	2021-07-12	2021-07-12	0.122	0.226	0.336	1.04	1.46	0.67	18657	18657	100.0	1972-08-01		7.935	9.8	34.6	73.1	128.0	195.2	874	838	0.1289	0.359	0.4129		0.0755	0.1288	0.3617	0.4604	0.0047	0.044	0.7378			0.2622		0.0165		0.33	0.747	0.991	52.2	18.03	33.7	46.1	9.5	14.87	8.04	77	221	0.34	9.8	55.25	0.336	0.735	0.0442	0.0146	0.47	0.736	0.0285	0.781	0.74			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir in flume section, subject to local bypassing during flood flows. Substantial baseflow but lower catchment is very responsive. Flows significantly reduced by groundwater abstraction for public water supply and irrigation.	Crump profile weir, crest width 3.03m, in flume section.	Channel bend upstream with sharp transition curve just above the structure; crest plate to weir; but no crest tapping. Brick walls to the structure with sheet piling beside the channel downstream; some detachment of concrete surface on downstream apron of weir. Upper stage limit 1.0m. New calibration derived (2003) - low confidence in flows > 9.6 cumecs (relatively rare). One rating applied across period of record derived from hydraulic modelling. Gauged to 0.5m with bypassing expected at 1.2m.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A predominantly permeable (Chalk) catchment with some areas of Reading Beds. The upper reaches of the Hamble are ephemeral. Land use is mainly rural - significant urban development in the lower catchment.	Flows significantly reduced by groundwater abstraction for public water supply and irrigation. Substantial baseflow but lower catchment is very responsive.
42012	Anton at Fullerton	185.0	SU37893923	437890.0	139230.0	51°09'03.8907"N 1°27'34.7581"W	51.15108	-1.45966	Anton	Fullerton	40.5	EA-SSD	151806001	42	1975-01-01		C+C		8.5	7.2	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1975-01-01	2023-09-30	1.85	0.429	1976-08-24	1976-08-24	6.623	2014-02-14	2014-02-14	0.91	1.347	1.667	2.84	3.325	0.96	17805	17712	99.478	1956-10-01		3.258	39.5	72.0	103.3	171.6	253.1	801	773	0.145	0.4211	0.3094	0.001	0.0711	0.1078	0.563	0.2496	0.0036	0.0753	1.0				0.0002	0.171	0.0257	0.34	0.931	0.954	40.1	8.1	32.8	41.7	10.7	29.23	16.66	113	159	0.27	39.5	186.16	0.316	0.88	0.0561	0.0244	0.624	0.744	0.0358	0.804	0.736			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combination of flows from main and side weir. Gauges a predominantly Chalk catchment with baseflow dominated regime.	Combination of flows from main weir (4.75m Crump) and side weir (1m Crump). Full range station.	Two weirs both rated using Crump weir hydraulic calculations.	Annual maxima post-1981 derived by taking highest stage on main weir and using highest stage on corresponding day at side weir. Pre-1981, only data from 4.75m weir available. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The groundwater catchment exceeds the topographical catchment area. An unresponsive (Chalk) catchment of rolling downland - the upper reaches of the Anton are ephemeral. Land use is rural with some expanding urban centres - Andover is 5km upstream.	Natural to within 10% at the 95 percentile flow. Baseflow-dominated regime but surface runoff can generate short-lived events. Significant groundwater abstraction. Water levels influenced by local mill sluice operation and, in the summer, by eel-traps. Cress beds in headwaters.
42014	Blackwater at Ower	104.7	SU3281617381	432816.0	117381.0	50°57'17.7484"N 1°32'03.0148"W	50.95493	-1.53417	Blackwater	Ower	7.6	EA-SSD	151817001	42	1976-01-01		C VA	10.0	2.7	25.0	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1976-09-30	2023-09-30	1.043	0.083	2013-09-01	2013-09-01	21.0	1999-12-24	1999-12-24	0.143	0.253	0.423	2.96	4.11	0.45	17167	17167	100.0	1976-10-01		14.774	8.1	27.9	54.7	104.4	156.0	867	837	0.3281	0.2502	0.3346	0.027	0.0557	0.2919	0.2502	0.3969	0.0315	0.0278	0.1905			0.8095	0.0804	0.01		0.33	0.479	0.979	44.5	34.18	35.7	46.3	10.7	18.89	11.34	60	124	0.17	8.1	102.38	0.423	0.855	0.0532	0.0089	0.326	0.875	0.0146	0.662	0.948			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir with velocity area for higher flows gauging a predominantly rural, natural catchment.	Crump profile weir, crest width 6.16m, with pressure transducer downstream. Located 10km upstream of the confluence of the River Blackwater with the River Test. Stage measured in stilling well inside hut on upstream side of weir. Downstream stage stopped being recorded in 2009.	The weir crest has a 1cm variation which does not conform to British Standard guidelines, the gauge is not within a straight section of channel and the channel turns sharply downstream to pass under the A3090 culvert. Velocity area calibration used for medium and high flows up to 1.85m (approx. 10 cumecs); includes allowance for floodplain discharge. No bypassing occurs at the culvert 50m downstream. There is also a small footbridge 100m downstream and another 1.5m upstream where water spills out of bank long before the soffit level is reached (1.31m stage). The channel in the vicinity of the gauge has vertical sheet piling - this continues, along with concrete banks, to the downstream culvert. Silt islands with vegetation growing on them exist in the channel. Significant vegetation growth directly upstream and downstream (sharp bend) of station; requires significant flood event to clear channel. One peak flow rating applied across period of record. Hydraulic modelling used to extended rating to 3.1m stage, fits gaugings well.	Good record since the late 1970s. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly rural catchment of meadows, woodland and heath underlain by Tertiary sands, gravels and clays (mainly impervious in the lower catchment). The catchment includes numerous small and medium sized towns in the area between Southampton & Salisbury. The River Blackwater drains the catchment in a south easterly direction. The river meanders across the floodplain & then below the A3090 dual carriageway.	A responsive catchment. Negligible net impact of artificial influences (cress beds in headwaters and very minor amount of spray irrigation. Natural to within 10% at Q95.
42015	Dever at Weston Colley	52.7	SU496394	449600.0	139400.0	51°09'06.1794"N 1°17'32.0006"W	51.15172	-1.29222	Dever	Weston Colley	64.9	EA-SSD	151804001	42	1976-01-01	2006-06-27	MIS	3.4	3.4	16.7	true	false	false	false	false	false	false	false	false	false	false	false	false	RG	1979-12-28	2006-06-27	0.111	0.0	1992-08-10	2005-11-29	0.749	2003-01-07	2003-01-07	0.008	0.043	0.075	0.232	0.317	0.94	9679	7454	77.012				63.4	83.1	105.6	147.0	181.8	836	789	0.1717	0.5371	0.236		0.0431	0.1911	0.6828	0.1158	0.0015	0.0087	1.0					0.1216		0.34	0.936	0.984	37.7	7.57	32.8	42.0	10.4	13.18	6.85	110	244	0.2	63.4	50.15	0.284	0.811	0.0545	0.0014			0.0028					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Record ceased in December 1995, decommissioned in 2006; superseded by 42027 Dever at Bransbury.	Compound thin-plate V-notch within Cipoletti weir (crest 3.6m), no divide piers; the thin-plate used to be removed during the winter.		Notable high flows in early 1990 and 1995 unrecorded.	Principally a Chalk catchment with limited superficial deposits. Predominantly rural with some woodland.	Very stable, baseflow-dominated flow regime. Low flows influenced by groundwater augmentation scheme. Significant cress-bed development.
42016	Itchen at Easton	236.8	SU51113250	451110.0	132500.0	51°05'22.3577"N 1°16'17.7992"W	51.08954	-1.27161	Itchen	Easton	41.7	EA-SSD	152204002	42	1975-01-01		EM	10.0			true	false	false	false	false	false	true	false	false	false	false	false	true	RPG	1975-10-01	2023-09-30	4.327	2.084	1992-07-13	1992-07-13	14.92	2014-02-12	2014-02-12	2.618	3.39	3.993	6.06	6.987	0.97	17532	17162	97.89				42.7	79.8	119.8	175.8	220.5	887	848	0.1171	0.4987	0.3235	0.0001	0.0379	0.1223	0.6366	0.226	0.0026	0.012	1.0	0.0			0.0078	0.1905	0.0304	0.34	0.949	0.931	53.0	6.15	35.3	46.0	10.2	33.41	17.5	123	260	0.14	42.7	234.17	0.272	0.873	0.0402	0.0038			0.0116	0.638	0.868			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Electromagnetic gauging station with insulated bed.	Installed 1983 - calibration confirmed by current-meter. Superseded a velocity-area station heavily affected by weed growth; weekly weed cutting can be necessary. Slight narrowing of channel upstream of section to flush out gravel and maintain a clear section. This has caused a small riffle in the centre of the section.	Ultrasonics employed as backup and for high flows at same site; performs well at high flows. Limited stage and velocity range makes for effective operation. As the hut is near the bridge and not near the gauging station there are problems with signal degradation during transfer between the two locations.		A predominantly Chalk catchment with significant patches of superficial deposits. Largely rural with some woodland and scattered settlements.	Largely natural baseflow-dominated regime (some abstraction for cress beds) but groundwater augmentation during severe droughts.
42017	Hermitage Stream at Havant	17.0	SU7106506790	471065.0	106790.0	50°51'22.5608"N 0°59'30.2778"W	50.85627	-0.99174	Hermitage Stream	Havant	8.0	EA-SSD	153601001	42	1976-01-01		VA	22.6		50.0	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1979-02-26	2023-09-30	0.241	0.0	1979-08-15	1979-08-17	5.523	1979-12-27	1979-12-27	0.025	0.074	0.12	0.576	0.872	0.45	16288	14126	86.726	1953-02-01		9.551	4.8	14.0	39.5	60.6	82.9	832	785	0.1874	0.042	0.3072		0.4569	0.2319	0.079	0.2471	0.0089	0.4331	0.0301			0.9699	0.0158			0.34	0.245	0.991	32.7	46.0	35.8	45.1	9.1	8.03	4.04	38	166	0.36	4.8	17.33	0.555	0.879	0.0749	0.1675	0.731	0.882	0.2376	0.897	0.952			gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a concrete trapezoidal section within a formalised reach. Station gauges a mainly impervious catchment, typical hydrograph very flashy. Post-2003 complex water utilisation affects flows.	Velocity area station, 5.36m wide in a concrete trapezoidal section. Formalised reach with grass berms beneath a bridge; concrete block wall higher on outside of bend on right bank.	Structure designed to measure up to 14 cumecs; all but exceptional flows contained and structure only exceeded a few times since installation. Bridge downstream may cause some backing up. Trolleys often thrown into stream here. Very sensitive at low flows, to extent where anomalous flow patterns occur (e.g. 2008); despite low flow anomalies, weed growth is not an issue at this station (very poor site ecologically). In 1951 a step was inserted into the flume throat to ensure modularity over the whole flow range, as the channel downstream was unlined. This was removed in 1956 and the structure became non-modular for low flows. One rating applied across period of record. Rating theoretically based but numerous current meter gaugings for this site.	Chart stage record extends back to 1953 providing peak flows pre-1979. June-August 2000 flows considered suspect. Station was possibly abandoned for a short duration around 1974. In winter of 1961, there existed a long period of high baseflow where the contribution from the Lavant catchment may have been greater. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A mainly impervious catchment, principally Reading Beds and London Clay. Intensive suburban development since the early 1960s, lower catchment now heavily urbanised.	Typical hydrograph very flashy; responsive regime. Natural to within 10% at Q95. Post-2003, some augmentation of high flows by runoff from the adjacent catchment of the Lavant Stream. Flow is diverted via a pipe into the Hermitage Stream, whenever the flow in the Lavant exceeds 0.28 cumecs. These inter-basin transfers also affect medium/low flows (e.g. 2006). Storage effect introduced to allow separation runoff from nearby Warren housing estate. Developers arranged 6 hour storage of natural stream runoff before its release into the Hermitage Stream (by which time the hydrograph is on the recession limb). Estate surface water drains allow unfettered discharge.
42018	Monks Brook at Stoneham Lane	43.3	SU4428517465	444285.0	117465.0	50°57'17.7137"N 1°22'15.1876"W	50.95492	-1.37089	Monks Brook	Stoneham Lane	8.0	EA-SSD	152104001	42	1977-01-01		FV	4.5		47.8	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1987-11-05	2023-09-30	0.323	0.008	1991-08-31	1991-08-31	9.856	2013-12-23	2013-12-23	0.033	0.089	0.159	0.79	1.225	0.43	13114	13114	100.0				7.8	29.1	55.3	116.2	157.1	831	787	0.1852	0.2978	0.2695		0.2411	0.2043	0.3034	0.2677	0.0052	0.218	0.4268			0.5732	0.0423		0.0116	0.33	0.595	0.986	48.1	27.5	33.6	42.8	9.9	16.0	8.39	64	156	0.25	7.8	46.76	0.501	0.703	0.0713	0.0643	0.665	0.527	0.1201	0.889	0.561			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir with current-meter calibration for high flows.	Flat-V weir (1:10 cross-slope) with current-meter calibration for high flows. Previously a velocity-area station (with piling stabilised banks). High flow gauging at footbridge and ford about 200m upstream; trapezoidal concrete channel between ford and gauging station.	With the exception of 1995 and 1996, most peak flows truncated (~2.7 cumecs).		A mostly low-lying catchment developed on impervious Tertiary formations. Mixed land use: rural headwaters with considerable woodland, substantial urban development near the station (Chandler's Ford/Eastleigh).	Responsive regime.
42019	Tanners Brook at Millbrook	16.0	SU3887613343	438876.0	113343.0	50°55'05.6820"N 1°26'53.9808"W	50.91825	-1.44833	Tanners Brook	Millbrook	3.9	EA-SSD	151901001	42	1977-01-01	2015-12-31	VA			52.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1977-11-09	2013-09-19	0.207	0.0	1978-09-02	2010-09-20	3.061	2003-01-01	2003-01-01	0.012	0.091	0.15	0.42	0.614	0.54	13099	12826	97.916				6.2	23.8	46.1	78.1	92.8	801	793	0.2974	0.0461	0.2271		0.4236	0.32	0.0773	0.2003	0.0053	0.3971				1.0	0.1801			0.33	0.368	0.978	56.4	40.97	33.6	43.5	9.9	8.17	4.91	48	200	0.21	6.2	14.12	0.354	0.829	0.0398	0.151	0.747	0.608	0.248	0.898	0.754			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with a responsive regime and urban catchment.	Velocity area station in a trapezoidal concrete section.	Initially a level only station but stage-discharge relation now established for all but the highest flows. Structure contains even the highest flows, so good confidence in high flows at this site.	Pre-1992 (and some later) peaks truncated at ~1 cumec.	A largely urban (Southampton) catchment developed on impervious Tertiary formations.	Responsive regime.
42020	Tadburn Lake at Romsey	19.0	SU36232122	436230.0	121220.0	50°59'21.2865"N 1°29'06.6708"W	50.98925	-1.48519	Tadburn Lake	Romsey	16.4	EA-SSD	151815001	42	1977-01-01	2014-04-30	VA			21.4	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1977-11-03	2014-04-30	0.337	0.0	1978-11-04	2013-08-19	4.448	1999-12-24	1999-12-24	0.014	0.078	0.162	0.866	1.108	0.76	13328	13144	98.619				16.0	32.1	50.0	117.6	173.4	824	782	0.2407	0.2308	0.3635		0.1405	0.2656	0.3031	0.3335	0.0062	0.0896	0.3586			0.6414	0.0966	0.0157	0.0069	0.34	0.607	0.983	48.4	27.37	34.4	44.0	10.1	12.09	5.98	63	211	0.25	16.0	19.61	0.446	0.761	0.063	0.0334	0.608	0.474	0.0537	0.882	0.562			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with issues across the flow range.	Velocity area station in concrete channel to speed water through residential estate. Hydrological research (mostly in the headwaters) undertaken initially by Southampton University.	At high flows, water can back up from downstream bridge. All flows estimated; no stable stage-discharge relationship due to moving gravel bed / sand bar downstream of stage measuring instrument, control shifts during every high flow event. Spot flow measurements taken from upstream bridge used to edit data. Limited sensitivity at low flows, not full range station.	Period of record flows under review due to complex issues relating to level measurement and stage drifting. Calibration ongoing - treat high flows with caution.	Linear catchment with rural headwaters; considerable woodland, but urbanised in lower reaches (Romsey). A largely impervious catchment developed mostly on Tertiary formations (principally Barton, Bracklesham and Bagshot Beds).
42023	Itchen at Riverside Park	415.0	SU44471534	444470.0	115340.0	50°56'08.8755"N 1°22'06.6381"W	50.9358	-1.36851	Itchen	Riverside Park	0.7	EA-SSD	152210001	42	1981-01-01		US				true	false	false	false	false	false	false	true	false	false	false	false	false	RPE	1982-05-25	2023-09-30	5.945	1.64	1995-08-17	1995-08-17	26.9	2014-02-08	2014-02-08	2.86	4.089	5.2	9.73	11.6	0.91	15104	15006	99.351				3.4	38.1	100.0	164.2	220.5	866	828	0.1098	0.4135	0.3649	0.0001	0.0937	0.1211	0.5408	0.262	0.0033	0.072	0.9014	0.0		0.0986	0.0137	0.1084	0.0542	0.34	0.892	0.955	51.9	9.65	34.6	45.0	10.0	59.28	32.62	99	236	0.13	3.4	411.24	0.475	0.698	0.0659	0.0269	0.664	0.453	0.0451	0.818	0.541			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauging station (multi-path with reflector).	Ultrasonic gauging station (multi-path with reflector). Gauge replaced in 2008 and data produced are now good.	Problems in period of record data caused by clogging of ultrasonics by weed growth; Tidal effects occasionally evident (dependant on downstream sluice operation).		Principally a rural, Chalk catchment but with appreciable urban growth near the outfall (where impervious Tertiary formations predominate).	Flows artificially influenced by two 45 megalitres/day surface water abstractions at Gaters Mill and Otterbourne and a large sewage treatment works discharge at Eastleigh. Groundwater augmentation (in headwaters) can be important.
42024	Test at Chilbolton Total	453.0	SU38503939	438500.0	139390.0	51°09'08.9237"N 1°27'03.3013"W	51.15248	-1.45092	Test	Chilbolton Total	39.4	EA-SSD	151805003	42	1988-01-01		EM				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1989-01-09	2023-09-30	5.6	2.23	1997-10-03	1997-10-03	21.3	2014-02-15	2014-02-15	2.962	4.07	4.94	8.76	10.6	0.97	12683	12544	98.904				39.8	75.2	121.3	193.9	296.4	834	801	0.1347	0.5044	0.2899	0.0012	0.0338	0.1294	0.629	0.2214	0.0037	0.016	0.9981	0.0019			0.0406	0.1396	0.0277	0.34	0.942	0.962	55.1	6.82	33.0	42.5	10.7	42.72	24.44	128	198	0.12	39.8	478.43	0.347	0.802	0.0527	0.0048			0.0086	0.676	0.966			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Two Electromagnetic gauging stations (buried coil): Chilbolton Main and Chilbolton Back Carrier; flows are summed.	Two Electromagnetic gauging stations (buried coil): Chilbolton Main and Chilbolton Back Carrier; flows are summed. Monthly current-meter results substantially extend the overall record.			A Chalk catchment (with patches of Drift). Predominantly rural with significant woodland and scattered settlements - Whitchurch is the main town.	Sensibly natural flow regime.
42025	Lavant Stream at Leigh Park	54.5	SU721072	472100.0	107200.0	50°51'35.3711"N 0°58'37.0610"W	50.85983	-0.97696	Lavant Stream	Leigh Park	11.9	EA-SSD	153701001	42	1981-01-01	2003-03-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1981-06-02	2003-03-31	0.083	0.0	1983-06-08	1997-04-24	1.924	2000-12-11	2000-12-12	0.002	0.015	0.036	0.168	0.315	0.52	7973	7799	97.818				12.2	44.4	101.1	165.1	269.1	937	904	0.2433	0.3968	0.2534	0.0008	0.0875	0.2602	0.4185	0.2519	0.0026	0.0667	0.9353	0.0002		0.0645	0.0323	0.0433		0.34	0.885	0.999	89.1	10.18	39.2	50.6	9.7	16.75	10.39	103	195	0.36	12.2	55.97	0.292	0.632	0.0444	0.0211	0.545	0.766	0.0421	0.801	0.775			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a largely impervious and therefore responsive catchment.	Velocity area station in trapezoidal section. Station level-only.	Rating poorly defined at low flows; gaugings also awaited to confirm rating for highest flows. By-passed by flood flows above 3 cumecs.		A largely impervious catchment, substantially urbanised below the headwaters. Topographical catchment area greatly exceeds groundwater catchment.	Responsive regime; evident urban influence. Since spring 2003 a proportion of flows >0.28 cumecs diverted to the neighbouring hermitage catchment. Topographical catchment area greatly exceeds groundwater catchment.
42026	Wallop Brook at Bossington	61.1	SU33403133	433400.0	131330.0	51°04'49.1690"N 1°31'28.4753"W	51.08032	-1.52458	Wallop Brook	Bossington	32.3	EA-SSD	151808002	42	1993-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false		2000-01-01	2023-09-30	0.577	0.011	2003-10-20	2022-08-15	5.109	2014-02-08	2023-01-17	0.024	0.192	0.388	1.249	1.778	0.9	8674	8631	99.504				29.6	56.9	81.8	112.1	172.4	801	770	0.0593	0.4238	0.4392		0.0244	0.0316	0.6035	0.3362	0.004	0.0246	1.0						0.0048	0.34	0.95	1.0	43.5	6.18	32.8	44.0	10.6	15.86	9.54	84	132	0.21	29.7	61.13	0.289	0.938	0.0549	0.0053	0.44	0.984	0.0096	0.6	0.847			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir, a baseflow dominated regime.	Flat-V weir. Occasional truncation of peak flows (e.g. Feb 2001).			Baseflow-dominated regime. The Wallop Brook drains a permeable (Chalk) catchment - typical open downland of a rural character, the `Wallops' and Bossington are the only significant settlements.
42027	Dever at Bransbury	122.3	SU42154224	442150.0	142240.0	51°10'40.2530"N 1°23'54.2405"W	51.17785	-1.3984	Dever	Bransbury	50.0	EA-SSD	151804002	42	1995-01-01		EM				true	false	false	false	false	false	false	true	false	false	false	false	false		2000-01-01	2023-09-30	1.09	0.253	2003-08-26	2003-08-26	5.65	2014-02-12	2014-02-12	0.385	0.68	0.906	1.94	2.428	0.96	8674	8673	99.988				49.2	68.4	92.3	128.1	181.8	818	780	0.103	0.5656	0.2812	0.0001	0.0335	0.1087	0.7301	0.1473	0.002	0.0119	1.0				0.0054	0.0867	0.005	0.34	0.944	0.986	36.9	6.58	32.9	42.4	10.3	23.82	11.91	95	256	0.13	49.2	122.36	0.337	0.871	0.0609	0.0025			0.0052	0.661	0.804			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Electromagnetic gauging station.	Electromagnetic gauging station, supersedes 42015.		Missing daily data in August - October 2015 due to gauge repair.	Principally a Chalk catchment with limited superficial deposits. Predominately rural with some woodland.	Baseflow-dominated flow regime.
42029	Test at Timsbury	978.42	SU35162340	435160.0	123400.0	51°00'32.0930"N 1°30'00.7924"W	51.00891	-1.50022	Test	Timsbury	19.0	EA-SSD	151812001	42	2004-09-01		US				true	false	false	false	false	false	false	true	false	false	false	false	false		2004-09-01	2023-09-30	11.959	4.132	2022-08-13	2022-08-13	49.87	2014-02-15	2014-02-15	6.116	8.452	10.25	19.26	23.1	0.94	6969	6924	99.354									818	790	0.1474	0.4708	0.3052	0.0018	0.0394	0.1346	0.5852	0.2486	0.0006	0.0272								0.34	0.911	0.969	50.5	8.63	33.2	43.0	10.7	65.79	36.68	111	172	0.14	14.1	978.42	0.422	0.846	0.0604	0.0084	0.547	0.985	0.0138	0.728	0.962			gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Cross path ultrasonic gauge measuring total flow of the Test.	Cross-path ulstrasonic gauge installed in September 2004.	Weed boom for the River Test is located approximately 30m downstream of section. The full range of flows is measured by the gauge. Site is not bypassed.		Highly permeable catchment (mostly Chalk) but with some Tertiary deposits and some patchy Drift cover - alluvium in the lower valley.	Base-flow dominated regime, but does react to high intensity rainfall events.
42030	Meon at West Meon	27.44	SU6486423964	464864.0	123964.0	51°00'41.0720"N 1°04'36.3996"W	51.01141	-1.07678	Meon	West Meon	83.0	EA-SSD	152803002	42	1987-02-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false		1995-01-01	2023-09-30	0.177	0.0	2009-09-20	2022-10-31	2.512	2000-12-12	2000-12-12	0.003	0.037	0.096	0.426	0.648	0.82	10500	10405	99.095									975	944	0.1207	0.3881	0.428	0.0	0.045	0.1125	0.4513	0.4317	0.0009	0.0034								0.35	0.987	0.983	102.0	3.11	39.1	51.4	9.9	9.87	5.09	144	305	0.18	82.6	27.44	0.307	0.93	0.045	0.0011			0.0037					gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging upper reaches of the Meon.	Flat V weir with record since 1987.	Site has always been within rating.		Predominantly permeable catchment, nearly all Chalk. A rural catchment with some uncultivated downland and scattered settlements.	Groundwater-dominated chalk stream although flows are relatively more variable than the Test and Itchen due to its hydrogeological setting and elevation above sea level.
43001	Avon at Ringwood	1649.8	SU1438905399	414389.0	105399.0	50°50'52.5662"N 1°47'49.1345"W	50.84794	-1.79698	Avon	Ringwood	13.7	EA-WX		43	1960-01-01	1968-12-31	VA	116.0			true	false	false	false	false	false	false	false	false	false	false	false	false	P	1960-10-01	1965-09-30	20.056	4.814	1962-09-26	1962-09-27	105.6	1960-11-01	1960-11-01	5.862	11.61	15.57	38.23	58.33	0.88	1826	1826	100.0				14.5	64.5	121.7	182.2	293.7	843	810	0.1236	0.3798	0.402	0.0131	0.0387	0.093	0.4354	0.4169	0.0246	0.0276	0.752	0.1376	0.0106	0.0998	0.1005	0.0277	0.0339	0.34	0.866	0.977	62.4	11.82	33.6	44.2	10.7	108.97	63.42	123	147	0.13	14.5	1651.34	0.658	0.849	0.0733	0.0145	0.549	0.925	0.0162	0.745	0.874			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station on the River Avon as a pre-cursor to the station at East Mills. Open from 1960-1965.	Pre-cursor to East Mills (43003). Not considered a primary gauging station.	Subject to summer weed growth.	Provides a very valuable insight into the 1964-65 drought.
43003	Avon at East Mills Total	1477.8	SU1586814355	415868.0	114355.0	50°55'42.3555"N 1°46'32.1150"W	50.92843	-1.77559	Avon	East Mills Total	27.3	EA-WX	432613	43	1965-01-01		MIS				true	true	true	true	false	false	false	true	false	false	false	false	false	PN	1965-11-01	2023-09-30	15.842	2.57	1976-08-26	1976-08-26	94.2	2000-12-12	2000-12-12	5.78	8.73	12.1	30.2	36.8	0.9	21153	21140	99.939	1965-10-01		47.505	26.4	78.8	127.1	185.4	293.7	838	807	0.1044	0.3885	0.4187	0.0039	0.0381	0.0794	0.4531	0.4329	0.006	0.0277	0.8036	0.1557	0.012	0.0287	0.0769	0.0295	0.0343	0.34	0.894	0.985	64.2	10.21	33.4	43.8	10.7	95.13	55.81	130	144	0.13	26.4	1459.45	0.621	0.868	0.0694	0.0149	0.557	0.883	0.0163	0.75	0.845	1966		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combined site consisting of East Mills Weir and East Mills Flume.	Combined site consisting East Mills Weir (43811) and East Mills Flume (43810). Weir is a compound Crump profile weir with central notch fish pass. Flume consists of a critical depth rectangular flume.	This station is a combined site consisting of East Mills Weir and East Mills Flume. High flows for both structures gauged from Fordingbridge bypass road bridge until 2002. Bypassing was previously an issue but re-rating has been carried out at both structures. Combined flows for the 2 structures are produced by summing individual flows under 40cumecs. Above 40cumecs combined flows are derived from a rating fitted to gaugings which takes the bypassing into account. Managed weed growth within d/s channel can cause non-modularity at flume and affects weir flows; since 01/01/2012 flows have been measured during times of non-modularity using a ADCP. Gaugings have proven it to be an accurate way of measuring flow at this site. Small irrigation carrier 3km upstream at Burgate bypasses gauge (normally <3% total flow).	Water year 1966/1967 rejected due to high uncertainty of flow value. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Predominantly permeable (Chalk) catchment. Land use is rural. No major catchment changes.	A small irrigation carrier fed from the River Avon at Burgate about 2 miles upstream bypasses the gauging station and is later returned to the main channel, (normally >3% total flow). The abstraction controlled by one hatch.
43004	Bourne at Laverstock	163.6	SU1568530383	415685.0	130383.0	51°04'21.2287"N 1°46'39.0142"W	51.07256	-1.7775	Bourne	Laverstock	45.9	EA-WX	432410	43	1964-01-01	2017-06-21	C		8.6	13.2	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1965-10-01	2017-06-21	0.784	0.045	1976-08-27	1976-08-28	7.799	2003-01-03	2003-01-03	0.196	0.373	0.533	1.501	2.17	0.92	18892	18453	97.676	1964-10-01	2017-06-22	2.05	46.1	83.3	125.6	185.9	265.3	787	768	0.1	0.4015	0.3877		0.0451	0.0702	0.5202	0.362	0.0051	0.0425	0.9654	0.0346			0.0993	0.019	0.0108	0.34	0.952	1.0	50.7	5.94	32.4	40.9	10.7	47.3	26.81	130	177	0.14	46.1	165.21	0.358	0.918	0.0561	0.021	0.527	0.737	0.0237	0.692	0.713	1964..2016	1964-10-01..1991-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir on the River Bourne, upstream of confluence with River Avon. Station closed in 2017.	Crump weir, crest 3m wide, approximately 1.6 km upstream of confluence with River Avon. Station closed in 2017.	Bypass channel upstream of gauging station and sluice operates year-round to give flow to bypass channel year-round. Out-of-bank flow may occur just upstream of station when flow exceeds 6 cumecs. Sluice fully opened at extreme high flows to protect downstream bridge. Heavy weed growth during summer months, needs regular maintenance. Theoretical original rating, recently re-calibrated at low flows. One theoretical peak flow rating applied across period of record. Upper limit of rating is 0.8m / 5.44m3/s. It is extrapolated beyond that limit.	Peak flow data prior to 1992 are rejected due to unknown gate movements. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly permeable (Chalk) catchment. Land use rural with some small settlements. River Bourne is ephemeral in its upper reaches. Garrison town of Tidworth has developed in catchment.	Runoff natural to within 10% at Q95. Operation of Winterbourne Gunner Mill about 3 miles upstream affects discharge.
43005	Avon at Amesbury	323.7	SU1510941387	415109.0	141387.0	51°10'17.4960"N 1°47'06.9629"W	51.17153	-1.78527	Avon	Amesbury	67.1	EA-WX	432130	43	1965-01-01		C B	1.37	31.0	9.8	true	true	true	true	false	true	false	true	true	true	true	true	true	G	1965-02-01	2023-09-30	3.523	0.183	1976-08-22	1976-08-22	25.18	2003-01-02	2003-01-02	1.106	1.9	2.74	6.778	8.32	0.91	21426	21426	100.0	1965-02-01		10.421	66.4	100.0	128.9	179.3	293.7	768	744	0.0911	0.334	0.4891		0.0331	0.0425	0.4333	0.4978	0.002	0.0241	0.7378	0.2622			0.0796	0.0291	0.0229	0.34	0.903	1.0	50.5	10.68	31.0	40.5	10.4	48.28	26.62	135	177	0.16	66.4	326.47	0.43	1.055	0.071	0.0154	0.535	0.939	0.0132	0.758	0.788	1965..1988	1965-10-01..1989-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir flanked by broad-crested weirs. Situated on the River Avon. Full Range station.	Crump profile weir (crest 9.14m wide) flanked by broad-crested weirs.	Full range station, a good gauge for high flow analysis .No known out of bank bypassing. Observed to be fully modular at 0.986m. Small bypass channel approx. 2m u/s of weir - included in rating. Weed growth downstream of the weir has in very exceptional summers been known to cause non-modularity. Two peak flow ratings applied across period of record. Re-rated in 2001 to include exceptional 12/2000 event and applied to whole period of record. The EA are very confident of the stage-discharge relationship. Good high flow rating based on current meter gaugings. Upper limit of rating is 1m / 26.3 cumecs. It is extrapolated beyond that limit.	Peak flows prior to 1987 are truncated and therefore rejected. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Predominantly permeable (Chalk) catchment with a small inlier of Upper Greensand and Gault. The northern area of the catchment consists of a band of Greensand between bands of lower chalk. The rest of the catchment is composed of upper Chalk. Land use is rural. Topographical and groundwater catchments do not coincide. No major changes.	Some groundwater pumping influences flows. During summer, flows are naturally augmented from groundwater draining from northern half of the River Bourne catchment.
43006	Nadder at Wilton	220.6	SU0972530794	409725.0	130794.0	51°04'35.0042"N 1°51'45.2162"W	51.07639	-1.86256	Nadder	Wilton	51.1	EA-WX	432210	43	1966-01-01		C	43.0		18.8	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1966-01-01	2023-09-30	2.89	0.492	1976-08-24	1976-08-24	27.73	1979-12-28	1979-12-28	0.898	1.437	2.115	5.84	7.423	0.82	21092	21082	99.953	1966-01-01		15.647	52.3	92.3	136.0	189.4	276.3	943	875	0.159	0.4871	0.2979	0.008	0.0317	0.1556	0.4783	0.349	0.0014	0.0133	0.455	0.4124	0.0814	0.0512	0.0091	0.0789	0.0238	0.35	0.763	0.976	78.5	19.62	35.6	46.2	10.9	34.58	21.91	139	126	0.15	52.3	215.63	0.423	0.821	0.0471	0.0055	0.346	0.805	0.0087	0.608	0.928	1965		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir on the River Nadder.	Crump weir, crest 18.3m wide.	Crest tapping abandoned after first few months; modular limit (0.6m) seldom reached, although weir can drown at very high flows. Bypassing is minor. Banks very weedy during summer. Rare weed clearance can lead to significant u/s constriction. Minor bypass. Gaugings taken 50-100m upstream, previously taken at Bull Bridge. Single theoretical rating has been confirmed by spot gaugings at high and low flows. Rating may underestimate in mid flow range. Upper limit of rating is 0.48m/12.8cumecs. It is extrapolated beyond that limit.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Mixed geological formation (Jurassic and Cretaceous) - predominantly Chalk with Clays in upper catchment. Land use is rural. No major catchment changes.	Natural to within 10% at Q95; some minor groundwater pumping. Sluices and hatches can regulate flow for short periods. A small drainage channel bypasses the recorder.
43007	Stour at Throop	1073.0	SZ1123396046	411233.0	96046.0	50°45'50.0308"N 1°50'31.5382"W	50.7639	-1.84209	Stour	Throop	4.4	EA-WX	433710	43	1973-01-01		CC		128.0	4.2	true	true	true	true	false	true	false	true	true	true	true	true	true	PGE	1973-01-01	2023-09-30	13.812	1.12	1976-08-13	1976-08-13	168.3	2012-07-09	2012-07-09	2.23	4.438	7.691	33.2	47.3	0.64	18535	18535	100.0	1972-11-01		99.289	5.2	40.6	83.5	156.1	276.3	901	861	0.0924	0.4647	0.3599	0.0111	0.0464	0.0882	0.4346	0.4285	0.0051	0.0424	0.4944	0.1283	0.2826	0.0946	0.0888	0.0264	0.0506	0.35	0.664	0.988	54.1	25.63	35.5	45.9	10.8	105.9	62.57	92	130	0.12	5.3	1062.08	1.02	0.922	0.1122	0.0169	0.618	0.608	0.0196	0.814	0.594	2022	2022-10-01..2023-09-30	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir on the River Stour.	Compound Crump profile weir, centre crest 5m wide and 2 higher flanking crests 18m wide.	Site unapproachable in flood conditions, gaugings can be problematic due to the wide approach channel and weed growth. High flow gaugings carried out at New Road Bridge (5km upstream) or Ensbury (4km upstream). Some combined gauging of the Stour and Moors River has taken place at Blackwater Bridge (SZ 134 959). Rating incorporates flow through two bypass channels just upstream of station: mill channel and Lodden Stour with a good fit to gaugings. Two peak flow ratings applied across period of record. Pre-1992 the rating was derived from weir dimensions to produce a theoretical rating in the modular range (including two small offtakes immediately upstream) with an extension for non-modular range fitted to spot flow gaugings. Post-1992 the rating was derived from weir dimensions for the main structure only (not offtakes) in the modular range and fitted to gaugings above.	Peak flows rejected as unrepresentative of the catchment from 2022-2023 because Large tree caught on weir for entire water year. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Mixed geology - predominantly Chalk (~50%); some clay (~30%), limestone including Great Oolite series, Corallian and Cornbrash (approx. 10%) and Upper Greensand (approx. 10%). Land use: rural and agricultural. No major changes.	Substantial ground and surface water abstractions including for public water supply. Runoff increased by effluent returns from upstream waterworks.
43008	Wylye at South Newton	445.4	SU0862834249	408628.0	134249.0	51°06'26.9099"N 1°52'41.2946"W	51.10747	-1.87814	Wylye	South Newton	55.6	EA-WX	432330	43	1966-01-01		C	36.9		7.4	true	true	true	true	false	false	false	true	false	false	false	false	false	P	1967-01-01	2023-09-30	4.026	0.56	1976-08-26	1976-08-26	29.4	1995-02-01	1995-02-01	1.099	1.88	2.86	8.54	10.79	0.89	20727	20727	100.0	1966-12-09		12.754	54.6	97.7	140.6	196.7	283.6	845	830	0.0935	0.3089	0.5051	0.0017	0.0269	0.0764	0.3852	0.5175	0.0033	0.0164	0.8984	0.0976		0.004	0.0472	0.0096	0.0253	0.35	0.937	0.976	70.1	6.92	33.7	45.8	10.9	52.41	26.59	144	119	0.15	54.6	448.17	0.366	0.887	0.0518	0.0103	0.575	0.916	0.0102	0.75	1.026	1988..1989		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir, can be affected by summer weed growth.	Crump profile weir, crest 10.7m broad. Full range station; opened in 1966. Subject to drowning and bypassing at high discharges.	Sluice control upstream for river regulation. Minor bypassing. Heavy weed growth during summer months. Good data set with check gaugings confirming original rating. One peak flow rating applied across period of record. Rating extended based on flood gaugings. Upper limit of rating is 1.30m/42.3 cumecs.	There is lower confidence in flow data before 1992, hence this data is marked as an unrepresentative period. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in September 2023 (WINFAP Files v12).	Predominantly Chalk; Upper Greensand and Gault in upper catchment. Rural land use. No major catchment changes.	Natural to within 10% at Q95. Direct abstraction from the river for spray irrigation. Sluice control upstream for river regulation and groundwater abstractions.
43009	Stour at Hammoon	523.1	ST8200514692	382005.0	114692.0	50°55'53.0158"N 2°15'26.7735"W	50.93139	-2.25744	Stour	Hammoon	40.9	EA-WX	433410	43	1968-01-01		CC		60.0	13.0	true	true	true	true	false	false	false	true	false	true	false	false	true	PG	1968-03-01	2023-09-30	6.731	0.207	1975-11-02	1975-11-02	138.0	2000-10-30	2000-10-30	0.651	1.22	2.26	18.1	29.3	0.35	20302	20302	100.0	1968-03-01		110.352	41.1	59.1	91.7	154.2	273.1	894	849	0.0739	0.4521	0.4268	0.0121	0.0265	0.0618	0.3454	0.5653	0.0011	0.0255	0.1786	0.2401	0.56	0.0213	0.0391	0.0007	0.043	0.36	0.442	0.992	49.9	40.02	34.6	44.3	10.8	45.93	26.52	100	106	0.07	41.1	518.75	0.952	0.851	0.1226	0.0095	0.512	0.966	0.0104	0.718	0.998	1967		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir situated on the River Stour.	Compound Crump profile weir with low flow crest 6.1m wide, total breadth 18.3m. Structure situated under road bridge.	Station drowns early. Water meadow system operates - area floods during high discharges and becomes inaccessible. Modular limit is unknown and probably seasonally variable. Severe weed growth. Non-modularity observed at stage around 0.7m (~Q13). Station regularly bypassed at approximately 2.3-2.6m (>Q2). Rating takes account for both of these situations. In-channel gaugings are carried out at the site but out of bank gaugings are taken at Stourpaine Bridge. Two peak flow ratings applied across period of record. Pre-1992 rating is theoretical for weir up to 0.975m then fitted to gaugings. Post-1992 rating is produced using dimensional surveys of weir up to 0.717m, fitted to gaugings to 3.066m then modelled above.	Only gauged back to 1992. Pre-1992 peaks are under recorded. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Predominantly impermeable (clay) catchment but with outcrops of more permeable substrates. Oxford and Cambridge Clays upstream, Chalk downstream. Rural land use. No major catchment changes.	Substantial ground & surface water abstractions within catchment affect flow, including abstraction for public water supply. Two water mills upstream may produce hydrograph perturbations, particularly when mean flows are less than 300cumecs (e.g. 11/1978).
43010	Allen at Loverley Farm	94.0	SU0068908568	400689.0	108568.0	50°52'35.7887"N 1°59'29.6773"W	50.87661	-1.99158	Allen	Loverley Farm	37.4	EA-WX	433529	43	1970-01-01		US			12.2	true	true	false	true	false	false	false	true	false	false	false	false	false	PGE	1970-07-01	2023-09-30	1.129	0.0	2021-07-02	2021-07-02	8.06	1990-02-19	1990-02-19	0.186	0.362	0.638	2.73	3.603	0.89	19450	16457	84.612	1969-09-02		4.709	37.2	59.0	96.3	190.5	276.3	942	872	0.0945	0.5374	0.2895	0.0036	0.0173	0.1239	0.6067	0.2627	0.0024	0.004	0.9998	0.0002			0.0935	0.0936		0.35	0.944	0.985	64.8	6.29	34.9	46.7	10.6	20.41	11.79	112	168	0.3	37.2	94.83	0.367	0.644	0.0521	0.0033			0.0046			1971..2011	1971-10-01..2012-05-17	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station (replaced Crump weir in 2013) in a predominantly Chalk catchment. Some abstractions / recharges influence the flow regime.	Ultrasonic station installed at Loverley Farm in 2013 to replace Loverley Mill Crump weir. Crump weir situated under old mill house, 1.84m wide. Built in 1969 for the specific purpose of measuring the low summer flows and later made operational over the full flow range.	Good full-range station. Bypassing occurs in very extreme events, between a stage of 0.6m and 0.7m (less than 10%). Training banks upstream raised following bypassing in winter of 2000/01 and 2002/03. Hatches just u/s control flow, which bypasses the station, into an old mill pond. Loverley Mill (Crump Weir): There is frequent hatch action and three rating equations for various hatch settings; calculation of flows only possible under finite hatch settings. They are largely unproven and therefore theoretical. Comparison of flow with recent ultrasonic gauge show that in 2012 when both the hatches are closed the rating is good (less than 6% difference between the 2 sites.) When 1 hatch is open the maximum difference between the two sites goes up to 17% and when both hatches are open the maximum difference between the two sites rises to 20%.	No stage data, or hatch opening information, available prior to 1992, so early record POT and AMAX are rejected. Digital POT and AMAX data (from 01/01/1992) are presented. Data from US station begins 01/10/2013. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly Chalk catchment. Rural land use. No major catchment changes.	Runoff reduced by public water supply abstraction and influenced by groundwater abstraction/recharge, but increased by effluent returns.
43011	Ebble at Bodenham	109.0	SU1650126502	416501.0	126502.0	51°02'15.5132"N 1°45'57.7186"W	51.03764	-1.76603	Ebble	Bodenham	41.5	EA-WX		43	1970-01-01	1976-12-31	C VA			10.2	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1970-04-01	1976-05-31	0.759	0.023	1970-09-26	1970-09-27	4.647	1974-02-11	1974-02-11	0.116	0.471	0.557	1.587	2.006	0.85	2253	1980	87.883				40.5	75.7	126.9	183.8	263.2	925	867	0.0595	0.5537	0.3104	0.0051	0.0283	0.0421	0.6016	0.3449	0.0023	0.0089	0.9695	0.0305			0.0416	0.0561	0.0215	0.35	0.943	0.984	95.0	6.25	35.5	45.9	10.9	29.8	15.96	129	103	0.16	43.3	105.55	0.32	0.746	0.0437	0.0061	0.297	0.827	0.0082	0.589	0.975			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station on the River Ebble just upstream of the confluence with the River Thames. Closed in 1976.	Velocity area station at concrete spillway and Crump weir 2.8m broad. Discontinued in 1976.			Predominantly Chalk catchment. Land use is rural.
43012	Wylye at Norton Bavant	112.4	ST9085842759	390858.0	142759.0	51°11'02.3469"N 2°07'55.8452"W	51.18399	-2.13218	Wylye	Norton Bavant	96.7	EA-WX	432320	43	1969-01-01		C		13.0	14.8	true	true	true	true	false	false	false	false	false	true	false	false	true	PGE	1971-07-01	2023-09-30	1.116	0.229	1976-07-10	1976-07-10	7.233	2014-01-04	2014-01-04	0.47	0.624	0.836	2.11	2.616	0.87	19085	19080	99.974	1969-08-21	2024-07-18	4.637	96.2	119.6	167.5	216.6	283.6	951	925	0.1257	0.4271	0.3452	0.0034	0.0614	0.116	0.447	0.3902	0.0012	0.0434	0.6393	0.3448		0.0158	0.0016		0.0122	0.35	0.885	0.975	74.0	11.19	34.9	47.8	11.0	25.15	12.98	167	99	0.2	96.3	114.01	0.365	0.788	0.0592	0.0188	0.676	0.513	0.0256	0.822	0.498	1987		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir on the River Wylye.	Crump profile weir, crest 6.09m broad. Full range station, theoretically rated. Station closed on 18/07/2024 due to modification of weir structure to aid fish passage, and is being replaced by an ultrasonic gauge in a similar location.	Out-of-bank flow may occur just upstream before bankfull at gauging station. Bypassing occurs during very extreme events but is not a major issue. One theoretical rating applied. Upper limit of rating is 0.41m, it is extrapolated beyond that limit.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in August 2024 (WINFAP Files v13).	Geology is predominantly Chalk with Upper Greensand and Gault in higher parts of catchment. The upper Greensand outcrops in the higher parts of the catchment around Kilmington and further downstream between Norton Bavant and Warminster there is a large outcrop of Upper Greensand associated with an anticlinal structure trending east/west. To the south of this outcrop there is an appreciable Chalk outcrop consisting mainly of Middle and Lower Chalk with limited outcrops of Upper Chalk. Land use is rural. No major catchment changes.	Some augmentation of flow. Substantial upstream groundwater abstractions and hatcheries affect flow.
43013	Mude at Somerford	12.4	SZ1836793387	418367.0	93387.0	50°44'23.3006"N 1°44'27.8668"W	50.73981	-1.74107	Mude	Somerford	5.6	EA-WX	430160	43	1966-01-01		C		2.8	110.0	true	false	false	false	false	false	false	true	false	false	false	false	false		1971-10-01	2023-09-30	0.117	0.0	1976-06-25	2022-08-14	1.99	2020-02-16	2020-02-16	0.015	0.039	0.073	0.254	0.368	0.58	18993	10693	56.3				7.3	13.9	35.8	62.5	76.6	839	782	0.3621	0.3168	0.2206	0.0187	0.0704	0.3175	0.3364	0.2526	0.0393	0.0489				1.0	0.845			0.33	0.664	0.978	30.8	27.85	35.2	46.6	10.2	9.39	5.22	37	228	0.45	7.3	13.04	1.142	0.615	0.148	0.0161	0.541	0.681	0.0278	0.762	0.791			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station on the River Mude in small, low relief catchment.		Station reopened with a Flat-V weir in 2003, previously a Crump weir.	No gauged daily flow data available from 12-1983 to 01-2005. Lots of scatter between gaugings and record, over reporting by 20-40%.	Small, low-relief catchment. Geology adjacent to river mainly comprises alluvial deposits with loam or clayey loam soils, remainder of catchment mainly gravels with well-drained coarse loamy and sandy soils. Land-use is residential urban.	Runoff reduced by public water supply abstraction.
43014	East Avon at Upavon East	85.78	SU1335155948	413351.0	155948.0	51°18'08.9999"N 1°48'35.5496"W	51.3025	-1.80987	East Avon	Upavon East	92.1	EA-WX	432110	43	1970-01-01		C		6.0	9.3	true	true	true	true	false	false	true	true	false	true	false	false	true	N	1971-10-01	2023-09-30	0.828	0.299	1976-08-26	1976-08-26	6.025	2014-01-04	2014-01-04	0.442	0.587	0.709	1.295	1.605	0.89	18993	18957	99.81	1970-03-06		3.729	92.9	109.9	139.8	187.5	293.0	788	759	0.1129	0.5074	0.3147		0.0439	0.0547	0.6211	0.3045	0.0009	0.0179	0.4027	0.5973			0.069	0.0755	0.0229	0.32	0.838	1.0	43.1	17.59	31.1	41.7	10.2	24.25	10.1	145	207	0.22	92.8	85.83	0.39	0.816	0.07	0.0157	0.477	0.91	0.0117	0.737	0.825			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station constructed early in 1970 at the confluence of the 2 branches of the Upper Avon adjacent to West Avon at Upavon. Benchmark station.	Station constructed early in 1970 at the confluence of the 2 branches of the Upper Avon. Crump profile weir, crest 3.05m broad. Station adjacent to West Avon at Upavon (43017); the two weirs gauge the two branches of the Avon immediately upstream of their confluence at Upavon. Eel tiles and fish baffles installed in 2015.	Full range station, some limited bypassing but there has been no validation. Weed growth not significant. Suspicion of small errors within the stilling well caused by increased buoyancy of the counter weight when submerged - may cause small errors in stage measurement in the order of a few mm's only. No by-passing but adjacent pond was flooded (although not entering downstream channel). Theoretical, original rating applies; very few spot gaugings available. Upper limit of rating is 0.73m / 4.23 m3/s. It is extrapolated beyond that limit.	18/01/2011 - at a level of 0.728 the modularity was observed at 60.6%. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly Upper Greensand and Lower Chalk; river gravel and alluvium in valley bottom. The remainder consists of Upper and Middle Chalk, Clay and some Gault. Upper Chalk and Clay form northern and extreme southern borders of catchment. Land use is predominantly pastoral and dairy farming. No major changes in catchment.	Natural to within 10% at Q95. Benchmark catchment but agricultural abstractions increasing. Occasional upstream hatch action.
43017	West Avon at Upavon West	84.6	SU1335355938	413353.0	155938.0	51°18'08.6760"N 1°48'35.4476"W	51.30241	-1.80985	West Avon	Upavon West	92.0	EA-WX	432120	43	1970-01-01		C		9.2	27.5	true	true	false	true	false	false	false	true	false	false	false	false	false	G	1971-10-01	2023-09-30	0.694	0.022	1976-08-27	1976-08-28	10.62	2014-01-04	2014-01-04	0.117	0.249	0.42	1.59	2.15	0.71	18993	18985	99.958	1970-10-01		5.439	92.8	106.9	124.9	192.1	293.7	765	744	0.1081	0.5486	0.2956		0.0273	0.013	0.674	0.296	0.0011	0.0156	0.5944	0.4056			0.051		0.0649	0.34	0.872	1.0	43.1	13.57	31.3	41.1	10.3	24.25	12.76	137	132	0.18	92.8	84.63	0.626	0.934	0.1188	0.0173	0.457	1.076	0.0112	0.694	1.0			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir on the West Avon. Adjacent station on the East Avon also gauges flow as the two meet on the confluence at Upavon.	Crump profile weir, crest 4.57m wide constructed just u/s of the confluence of the East and West Avon just north of Upavon. Station adjacent to East Avon at Upavon (43014); the two weirs gauge the two branches of the Avon immediately upstream of their confluence at Upavon.	Full range station, no drowning but susceptible to algal growth problems. Suspicion of small errors within the stilling well caused by increased buoyancy of the counter weight when submerged - may cause small errors in stage measurement in the order of a few millimeters only. Theoretical, original rating; few high flow spot gaugings to confirm. Upper limit of rating is 0.40m/2.46cumecs. It is extrapolated beyond that limit.	High flow on 18/01/2011 - level of 0.586m, modularity was observed at 83.5%. A hydraulic jump was still present and there was no by-passing. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly Upper Greensand and Lower Chalk. Small amount of river gravel and alluvium in valley bottom. The remaining geology consists of Upper and Middle Chalk, Clay and some Gault. Upper Chalk and Clay form the northern and extreme southern borders of the catchment. Rural land use. No major catchment changes.	Minor groundwater abstractions in catchment. Frequent hatch activity throughout the flow range with potential for exaggerated or false peaks.
43018	Allen at Walford Mill	176.5	SU0082500698	400825.0	100698.0	50°48'21.0131"N 1°59'22.7734"W	50.80584	-1.98966	Allen	Walford Mill	18.8	EA-WX	433540	43	1974-01-01		C	14.1		19.4	true	true	true	true	false	false	false	true	false	true	false	false	true	PG	1974-11-01	2023-09-30	2.014	0.071	1976-08-23	1976-08-24	15.2	2000-12-13	2000-12-13	0.371	0.725	1.28	4.72	5.83	0.92	17866	17865	99.994	1974-10-01		6.912	18.5	37.6	78.2	164.0	276.3	922	860	0.094	0.5519	0.2862	0.0032	0.0173	0.1186	0.6318	0.2425	0.0021	0.0043	0.9425	0.0001		0.0575	0.0767	0.0699	0.025	0.35	0.914	0.979	51.7	8.17	35.2	46.6	10.5	32.0	17.82	89	157	0.27	18.6	170.88	0.451	0.711	0.0674	0.0039			0.0052	0.32	0.311			gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Two crump profile weirs on main and secondary channel of the River Allen.	Two Crump profile weirs: main channel weir crest 6.1m wide; secondary weir in mill stream adjacent to main channel - 0.9m wide. Eel pass added in 2018.	Weed growth occasionally causes structure to drown. Passing occurs at high levels. Gauging on 08/02/13 found that the by-passed flow measured 14% of the total flow. Generally rating looks good at high flows. One theoretical, original rating which includes mill channel applied across period of record. Upper limit of rating is 0.46m / 4.53 cumecs. It is extrapolated beyond that limit.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Upper catchment - chalk, lower catchment - sands, gravels and clays. Land use: predominantly rural. No major changes.	Hatch activity u/s of station. Minor surface and groundwater abstractions in catchment, some for public water supply. Compensation discharge maintains low flows.
43019	Shreen Water at Colesbrook	29.1	ST8081927790	380819.0	127790.0	51°02'56.8823"N 2°16'30.0332"W	51.04913	-2.27501	Shreen Water	Colesbrook	71.8	EA-WX	433110	43	1973-01-01		C	6.8	6.8	10.0	true	true	false	true	false	false	false	true	false	true	false	false	true	G	1973-12-01	2023-09-30	0.558	0.13	2011-11-19	2011-11-19	11.7	2008-07-09	2008-07-09	0.194	0.295	0.385	1.03	1.474	0.68	18201	18199	99.989	1973-12-01		13.505	74.4	84.6	113.8	182.0	245.4	915	883	0.0506	0.4321	0.47	0.0095	0.0331	0.0269	0.4822	0.4527	0.0004	0.0375	0.4146	0.2028	0.3826					0.35	0.565	0.993	51.7	32.26	33.9	44.2	10.7	11.58	5.81	125	157	0.42	74.5	30.4	0.433	0.78	0.063	0.011	0.506	0.998	0.0155	0.744	0.969			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir.	Crump profile weir, crest 3m wide.	Reasonable rating up to QMED. Structure drowns before bankfull stage, flow goes out-of-bank, and there is significant bypassing. Gauging is difficult and gaugings > 5m3s-1 show substantial scatter; high flows unreliable - may be significantly over-estimated. One peak flow rating applied across period of record.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Predominantly Kimmeridge Clay (70%), some Chalk (15%) and Upper Greensand and Gault (15%) in the north of the catchment. Flat pasture land on both sides of river. Runoff calculations suggest hydrological & topographical catchments do not coincide. Runoff figures (may be over-estimated) suggest topographical and hydrological catchment areas do not coincide. Substantial baseflow component but flashy response to storm events. Land use is predominantly agricultural.	Significant ground water pumping in catchment. Some augmentation from effluent returns.
43021	Avon at Knapp Mill	1706.0	SZ1560794304	415607.0	94304.0	50°44'53.2756"N 1°46'48.5364"W	50.74813	-1.78015	Avon	Knapp Mill	2.5	EA-WX	432819	43	1974-01-01		US	55.0			true	false	false	false	false	false	false	true	false	true	true	false	true	P	1975-01-01	2023-09-30	19.987	2.49	1976-08-22	1976-08-22	146.2	1990-02-14	1990-02-14	6.222	10.0	14.6	38.8	53.2	0.86	17805	17758	99.736				3.1	55.3	119.9	181.2	293.7	843	810	0.129	0.3734	0.3978	0.0177	0.0406	0.0981	0.4265	0.4144	0.0288	0.0295	0.7252	0.1327	0.0103	0.1319	0.118	0.0267	0.0386	0.34	0.859	0.977	61.1	12.26	33.7	44.3	10.7	129.78	81.69	120	150	0.13	3.1	1712.31	0.808	0.794	0.0837	0.015	0.555	0.919	0.017	0.751	0.873			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station with rectangular cross-section on main River Avon channel.		Ultrasonic station - dual cross path. Both banks are piled and the bed is dredged to form a rectangular cross-section. Limited number of flow readings logged per day up to 08-1988. Record improved from 1991 and now very good when in bank. Monthly check gaugings confirm improved performance. By-passing commences, in normal conditions, at about 41 cumecs. Above this an equation has been derived, by carrying out extensive flow measurements of the by-passing flow. On occasions, typically in an unusually wet spring/summer and when aquatic weed growth in the channel is prolific, the by-passing can occur below 41 cumec. Attempts to correct the recorded flow are carried out by taking flow measurements of the by-passing. Some additional uncertainty is therefore inevitable under these conditions.		Mixed geology; predominantly Chalk with sands, gravels and clays in the lower catchment. Land use is rural.	Some abstraction for PWS in catchment.
43022	Moors River at Hurn Court	143.3	SZ1262396894	412623.0	96894.0	50°46'17.3814"N 1°49'20.4834"W	50.77149	-1.82236	Moors River	Hurn Court	6.0	EA-WX	433610	43	1989-06-01		C				true	false	false	false	false	false	false	false	false	false	false	false	false		1992-01-01	2023-09-30	1.718	0.241	1995-08-22	1995-08-22	26.07	2013-12-24	2013-12-24	0.393	0.683	1.059	3.71	5.246	0.65	11596	11596	100.0				4.8	16.3	36.3	96.6	192.7	864	822	0.2486	0.2426	0.2604	0.0928	0.1447	0.2142	0.2707	0.2851	0.0914	0.1364	0.217			0.783	0.1144	0.0231	0.0377	0.35	0.636	0.978	32.1	25.25	35.0	47.2	10.2	37.92	16.97	46	146	0.25	4.8	149.15	0.899	0.712	0.1563	0.0346	0.584	0.693	0.068	0.852	0.709			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir on tributary to the River Stour. Catchment includes Bournemouth Airport.	Tributary of the Dorset Stour which it joins 1km d/s.	Large Flat V Crump profile weir 10m wide with fish pass batten on the d/s slopes. Low flow measurement OK, backs up from the River Stour at higher flows. Bypassing at top end.	Flow records commence in 06-1989.	Rises from Chalk spring on Pentridge Hill where it is known as the River Crane; name changes to Moors River after entering the Tertiary deposits. Low rolling hills supporting pasture, woodland (including coniferous plantations) and heath land on acid soils. Bournemouth (Hurn) Airport lies within the catchment.
43023	Ebble at Nunton Bridge	106.6	SU1609026363	416090.0	126363.0	51°02'11.0553"N 1°46'18.8431"W	51.0364	-1.7719	Ebble	Nunton Bridge	45.4	EA-WX	432520	43	1996-12-05		US				true	false	false	false	false	false	false	true	false	false	false	false	false		1996-12-05	2023-09-30	1.329	0.148	2011-10-18	2011-10-19	10.83	2014-01-06	2014-01-06	0.235	0.466	0.799	3.02	4.13	0.86	9796	6813	69.549				44.2	76.0	127.0	183.8	263.2	925	867	0.0589	0.5544	0.3103	0.0051	0.0284	0.0416	0.6023	0.3447	0.0023	0.0089	0.9695	0.0305			0.0414	0.0562	0.0213	0.35	0.943	0.984	95.1	6.24	35.5	45.9	10.9	29.34	15.52	129	103	0.16	44.3	105.43	0.316	0.747	0.0433	0.0061	0.297	0.82	0.0082	0.589	0.971			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Built in 1996, originally an electromagnetic gauging station, but replaced with ultrasonic. On the River Ebble, a tributary to the River Avon (Hampshire).	Tributary of the River Avon (Hampshire). Pristine chalk stream within a natural catchment.	Ultrasonic gauging station. 9.4m wide trapezoidal section to bankfull. Built approx. 500m u/s of 43011 (Ebble at Bodenham open from 1970-76) but not as a replacement for it. No bypassing.		Predominantly Chalk catchment with rural land use.	Small abstraction from fish farm.
43024	Wylye at Stockton Park	254.8	ST9751639371	397516.0	139371.0	51°09'12.9222"N 2°02'12.8253"W	51.15359	-2.0369	Wylye	Stockton Park	79.7	EA-WX	432325	43	1994-05-25		EM				true	false	false	false	false	false	false	true	false	false	false	false	false		1994-08-31	2023-09-30	2.495	0.519	2015-10-28	2015-10-28	19.95	2014-01-07	2014-01-07	0.696	1.117	1.7	5.24	7.27	0.86	10623	10580	99.595				78.9	109.1	158.5	207.5	283.6	893	873	0.1166	0.3027	0.4791	0.0028	0.0376	0.0975	0.365	0.5099	0.0029	0.0236	0.821	0.1719		0.0071	0.0384	0.0035	0.0175	0.35	0.925	0.988	75.7	7.94	34.1	47.2	11.0	35.35	16.63	158	110	0.17	78.9	254.44	0.334	0.853	0.0513	0.0126	0.613	0.799	0.0139	0.791	0.885			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Electromagnetic gauge on the River Wylye, a tributary to the River Avon (Hampshire).	Tributary to the River Avon (Hampshire).	Electromagnetic gauge within trapezoidal concrete section. Periodically re-rated.	Early record has been reviewed. Small step changes in flow are a result of the recalibration of electromagnetic gauge equation.	Predominantly natural catchment with Upper Greensand and Gault Clay in headwaters, otherwise Chalk. Land use is rural.
43025	Dockens Water at Moyles Court	17.15	SU1608008301	416080.0	108301.0	50°52'26.3523"N 1°46'22.2087"W	50.87399	-1.77284	Dockens Water	Moyles Court	26.5	EA-WX	432800	43	2001-09-28		FV				true	false	false	false	false	false	false	true	false	false	false	false	false		2001-09-28	2023-09-30	0.237	0.03	2006-07-18	2018-07-10	7.714	2013-12-23	2013-12-23	0.042	0.067	0.107	0.541	0.925	0.39	8038	8038	100.0				26.5	48.6	77.3	110.2	124.4	879	854	0.4741	0.0598	0.2278	0.213	0.0243	0.3136	0.0159	0.2181	0.4479	0.004				1.0	0.2447			0.33	0.344	0.999	56.7	41.38	37.1	47.4	10.6	12.36	6.6	78	260	0.19	26.5	17.2	0.502	0.683	0.0532	0.0016			0.0052	0.398	1.236			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir on Dockens Water before the confluence with the River Avon.	Tributary of the Upper Hampshire Avon, in western part of the New Forest.	Flat-V weir with 1:10 crest cross slope, width 4.52m.		Catchment comprises extensive mire (Digden Bottom), with bog mosses, small boggy pools and flushes, and various woodland inclosures (e.g. Newlands Plantation).
43026	Bourne at Salisbury Bourne		SU15532929	415530.0	129290.0	51°03'45.8618"N 1°46'47.1462"W	51.06274	-1.77976	Bourne	Salisbury Bourne		EA-WX	432420	43	2007-01-01		US				true	false	false	false	false	false	false	true	false	false	false	false	false		2004-11-22	2023-09-30	0.829	0.125	2006-09-08	2006-09-08	8.73	2014-02-14	2014-02-14	0.212	0.412	0.566	1.55	2.34	0.93	6887	6469	93.931																																																						gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Site consists of three channels, main river channel and two bypassing culverts.	Time of flight ultrasonic gauging station with three channels, comprised of the main river and two bypassing culverts. Main channel is monitored using a time of flight cross path arrangement, within a rectangular concrete section. Culverts are monitored using a time of flight inline arrangement and a shared level at the culvert exits. The main channel has periodically been desilted. Culverts have historically been blocked to varying degrees and since 23/12/14 permanently closed.	Main channel is monitored using a cross path ultrasonic and the culverts by an inline ultrasonic. Since 23/12/14 the culvert entrance has been blocked.	Missing daily flow data on 11/12/2019 due to outstation failure.	Predominantly permeable (Chalk) catchment. Land use rural with some small settlements. River Bourne is ephemeral in its upper reaches. Garrison town of Tidworth has developed in catchment.
43027	Allen at All Hallows	36.16	SU0243412936	402434.0	112936.0	50°54'57.1766"N 1°58'00.2907"W	50.91588	-1.96675	Allen	All Hallows		EA-WX	433510	43	1992-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	R	1992-01-01	2023-09-30	0.542	0.02	2015-08-08	2015-08-08	3.28	2014-01-08	2014-01-08	0.065	0.141	0.284	1.41	1.8	0.89	11596	11590	99.948									947	877	0.0943	0.5621	0.2792	0.0055	0.019	0.1446	0.6078	0.2401	0.0	0.0067								0.34	0.958	0.99	54.4	5.71	35.3	47.1	10.7	12.93	7.39	119	163	0.36	58.2	36.16	0.297	0.588	0.0447	0.0027			0.0039					gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging the upper reaches of the River Allen.	Flat V weir 2.5m across.	Not well gauged in non-modular range. Downstream weed can cause non-modualrity. Bypassing possible at high levels. Theoretical rating produced from weir dimensions. Levels/flows affected by stream support.	Drop out in flows 8th August 2015, 13th and 14th September 2021 are due to failure of stream support.	Predominantly Chalk catchment. Rural land use.	Baseflow dominated regime.
43028	Chitterne Brook at Codford	69.7	ST97074015	397070.0	140150.0	51°09'38.1314"N 2°02'35.8059"W	51.16059	-2.04328	Chitterne Brook	Codford		EA-WX	432324	43	1994-01		C				true	true	false	true	false	false	false	true	false	false	false	false	false	R	1994-01-11	2023-09-30	0.42	0.0	1994-08-02	1997-02-28	9.856	2014-01-08	2014-01-08	0.035	0.054	0.08	1.011	1.957	0.6	10855	10069	92.759	1972-01-01		2.332	81.0	117.9	157.9	198.3	230.3	818	807	0.0456	0.0875	0.7624		0.0009	0.0321	0.1764	0.7828	0.0058	0.003	0.9851	0.0149			0.0641			0.35	0.974	1.0	70.9	4.35	32.5	45.1	10.9	21.79	12.6	158	134	0.18	81.0	68.0	0.193	0.701	0.0246	0.0016			0.0008			1993..1996		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir with single concrete crest and brick walls and footbridge over structure. Previously station number 43801.	Crump weir with single concrete crest and brick walls, 3.0m wide, with a footbridge over the structure.	Bypassing is not significant, only at extremes. Weir seen to be drowned at 0.44m. Two peak flow ratings applied across the period of record.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The catchment area consists of Upper Cretaceous (Upper and Middle Chalk), valley gravel and alluvium. No major urbanisation in the catchment. Land use rural and agricultural.	Subject to stream support as part of an EA/Water Company operating agreement.
43029	Wylye at Brixton Deverill	50.04	ST85623796	385620.0	137960.0	51°08'26.6070"N 2°12'24.9397"W	51.14072	-2.20693	Wylye	Brixton Deverill		EA-WX	432310	43	1992-03		FVUS				true	true	true	true	false	false	false	true	false	false	false	false	false	PG	1994-01-01	2023-09-30	0.31	0.041	2002-10-12	2002-10-12	3.05	2014-01-04	2014-01-04	0.072	0.139	0.183	0.701	0.954	0.85	10865	10426	95.96	1979-01-01		1.667	124.3	150.1	191.4	224.9	283.6	1003	968	0.0435	0.5597	0.3451	0.0061	0.017	0.0305	0.5726	0.392	0.0009	0.0031	0.7625	0.2375						0.35	0.931	1.0	76.5	8.34	35.1	47.0	11.0	12.76	5.96	189	106	0.2	124.3	50.04	0.233	0.982	0.0367	0.0019			0.0031					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump weir with an ultrasonic multipath for periods of non-modularity frequently caused by downstream weed growth. Previously station number 43806.	Flat V Crump weir 4.5m wide for low flows with an ultrasonic multipath for periods of non-modularity.	The ultrasonic gauge has been operational since 27/9/2002. Low flow gauge with flood warning alarm. Drowns out at 0.58m, mainly in summer due to weeds. Theoretical original rating until flow becomes non-modular when upstream ultrasonic takes over (installed Sept 2002). Prior to 09/2002, rating for the weir performs reasonably and was confirmed at high flows by gaugings in 2000 event. Extrapolated above 0.4m. Frequently non-modular between April and October due to downstream weed growth. Can bypass at extremes.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The catchment area consists mainly of Cretaceous Chalk (Upper and Lower Chalk). Land use mostly rural.	Abstraction for public water supply, and stream support over summer and autumn upstream of gauge.
44001	Frome at East Stoke Total	414.4	SY8672786839	386727.0	86839.0	50°40'51.7961"N 2°11'21.2227"W	50.68105	-2.18923	Frome	East Stoke Total	9.2	EA-WX	445912	44	1968-01-01		MIS				true	true	false	true	false	false	false	false	false	false	true	false	false	N	1965-10-01	2023-09-30	6.732	0.954	1976-08-27	1976-08-27	27.74	2023-01-16	2023-01-16	2.516	3.765	5.33	12.87	15.7	0.86	21184	21184	100.0	1960-07-01		21.339	8.1	39.3	114.5	196.5	264.6	1022	968	0.0938	0.4713	0.3732	0.013	0.036	0.0989	0.4352	0.4154	0.0174	0.0315	0.6569	0.1053	0.0022	0.2356	0.0916	0.092	0.0471	0.37	0.778	0.968	80.1	19.58	38.6	51.0	11.2	55.25	29.73	115	95	0.13	8.2	414.59	0.556	0.654	0.0712	0.01	0.513	0.74	0.014	0.749	0.744	1991		gdf;gmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combined station consisting of East Stoke Flume and East Stoke Weir.	Combined station consisting of East Stoke Flume and East Stoke Weir.	East Stoke Flume, commissioned in 1961, is a three-part compound structure of total width 10.9m, with wingwalls to 1.8m comprising of a rectangular critical depth flume, 3.05m wide, bounded by two broad-crested weirs. Gaugings taken when the station is bypassed are made downstream where all the flow is confined. Flume drowns during high flows and low flows, at a stage which depends on the downstream weed growth. For example non modularity was observed at a stage of 0.776m in May 2009 but modularity was observed at 1.32m on 20/07/2012. Borderline modularity was observed at 1.50m on 24/11/2012. A low flood bank constructed on left bank confines flows up to a stage of ~1.3m (11cumecs), but the station is bypassed above this level. This was confirmed by an observation on 20/07/2012. East Stoke Weir (local no.445920), commissioned 1966, is a Crump profile weir 3.6m wide on a bypass channel. Drowns at high flows. Bypassing occurred in the summer of 2012 at a stage of 0.333m and in the winter of 2012 at a stage of 0.497m. Currently unsure at what stage by-passing commences. Bypassing towards flume channel just after flume channel confluence. Structure limit of weir 4.36cumecs. Protected flow site combining East Stoke Flume (Rated from gaugings) and East Stoke Weir (theoretical rating).	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Geology is mainly Chalk; Upper Greensand and Gault, Lias and Oolites in headwaters; sands, gravels and clays in lower catchment. Rural land use. No major catchment changes.	Runoff natural to within 10% at the 95 percentile flow. No abstractions of water from the river above the station, but considerable quantities of water are abstracted from the chalk catchment area by bore holes and wells. Flows sometimes affected by u/s research activity. The proportion of flow passing through each station can be significantly altered by the research activities of CEH Dorset. Data presented is from the digital record, from 1991.
44002	Piddle at Baggs Mill	183.1	SY9132287609	391322.0	87609.0	50°41'17.0391"N 2°07'27.1546"W	50.68807	-2.12421	Piddle	Baggs Mill	2.1	EA-WX	444510	44	1963-01-01		FL		16.0	7.9	true	true	false	true	false	true	false	true	true	true	false	true	true	G	1963-10-01	2023-09-30	2.52	0.363	1976-08-23	1976-08-23	14.08	2023-01-16	2023-01-16	0.792	1.26	1.86	5.05	6.55	0.89	21915	21915	100.0	1963-11-01		8.23	5.0	36.2	102.5	178.9	273.1	1004	942	0.0882	0.5079	0.3366	0.0221	0.0186	0.1032	0.5291	0.3318	0.0206	0.0135	0.8237	0.0338	0.0088	0.1337	0.0243	0.0297	0.0505	0.36	0.86	0.969	79.5	12.93	37.0	48.9	11.0	38.29	23.16	105	143	0.21	5.1	183.79	0.438	0.663	0.0537	0.0033			0.0051	0.575	0.904			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular critical depth humped flume.	Rectangular critical depth 'humped' flume, 4.885m wide. Situated in left-hand bend of river.	Cessation of weed cutting in upstream channel in 2009 has altered the pattern of bypassing. In 2012 the flume was severely affected by significant bypassing (up to 60% of flow by passing on 09/07/2012) due to weed growth upstream of the gauging station. Complex water meadow system 2-3km upstream can result in minor short-term fluctuations in the river flow. Theoretical rating; gaugings have confirmed rating at high flows. Two ratings applied across period of record. Most recent rating takes account of bypassing but is theoretical below 0.737. Limb two was derived by regression using gaugings with break point for bank full levels.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Upper catchment - Chalk; lower catchment - Tertiary, sands, gravels and clays. Land use is predominantly agricultural. No major changes to catchment.	Minor groundwater abstractions in catchment.
44003	Asker at Bridport	49.1	SY4701492756	347014.0	92756.0	50°43'55.1668"N 2°45'07.7164"W	50.73199	-2.75214	Asker	Bridport	6.4	EA-WX		44	1966-01-01	1980-01-31	FVUS			24.5	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1966-06-01	1980-01-31	0.581	0.112	1976-08-27	1976-08-27	9.852	1979-12-27	1979-12-27	0.2	0.298	0.396	1.087	1.582	0.64	4993	4981	99.76	1966-09-01	1980-01-31	12.354	8.2	41.7	94.9	173.6	251.6	979	924	0.1333	0.2716	0.5525	0.0002	0.0351	0.1095	0.2539	0.6047	0.0018	0.03	0.4444	0.5058	0.0498			0.0214	0.1317	0.38	0.696	0.994	138.4	26.49	38.4	47.6	11.1	12.41	7.31	100	251	0.16	8.2	48.52	0.275	0.583	0.0249	0.0107	0.536	0.31	0.0154	0.719	0.289	1995		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir closed in 1980 and replaced by 44011.	Crump weir on channel dug as part of flood prevention scheme. Flow measured at this location 1966 to 1980. In 1980-1996 station was moved to site at Jessops Avenue (head control weir with relief weir), but no data available for this station. Station replaced by East Bridge Bridport (44011) in 1996.	Bypassed at stages above 0.5m, bypass flow is included in the CEH rating. Two peak flow rating applied across period of record.	Peak flows presented for the earlier record (1966-1980) have greater uncertainty associated with them than new site (1996-date).	Rapidly responsive catchment due to steep slopes on Liassic Clay and marl. No major changes.	Natural runoff to within 10% at Q95. Several mills operate sluices and hatches upstream of weir and regulate the flow.
44004	Frome at Dorchester Total	206.0	SY7084890331	370848.0	90331.0	50°42'42.7470"N 2°24'51.3048"W	50.71187	-2.41425	Frome	Dorchester Total	52.0	EA-WX	445512	44	1971-01-01		MIS			15.1	true	true	false	true	false	false	false	true	false	false	false	false	false	G	1971-10-01	2023-09-30	3.245	0.275	1976-08-27	1976-08-27	17.74	2003-01-01	2003-01-01	0.927	1.62	2.439	6.49	8.194	0.83	18993	18989	99.979	1969-01-01		15.58	50.7	91.3	150.9	214.5	264.6	1074	1010	0.0569	0.4813	0.4206	0.0021	0.0283	0.066	0.4051	0.5044	0.0013	0.0227	0.8006	0.1994			0.0107	0.1577	0.0158	0.38	0.775	0.971	100.4	20.56	39.8	51.4	11.3	31.37	16.85	152	131	0.13	50.7	205.67	0.305	0.66	0.0348	0.0085	0.513	0.398	0.0123	0.766	0.385			gdf;gmf;cmr;cdr;cdr-d;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combined station comprising of Loudsmill, Loudsmill Fish Pass and Stinsford.	Combined station (Loudsmill, Loudsmill Fish Pass, Stinsford) consisting of 3 crump weirs and a Larinier fish pass.	Louds Mill has two Crump profile weirs of which the largest has broad crested abutments, crests 10.66m (side-spilling). Also a side Crump profile weir on Mill Stream 1.52m broad. A Larinier fish pass, situated adjacent to the main weir on the left bank, was completed in autumn 2008. Stage is measured and flow computed independently at Loudsmill Fish Pass. Gauging has shown that the stage discharge relationship for the Fish Pass is good. Bypassing very small. Rating includes side channel and is modular to 10cumecs. The third Crump profile weir at Stinsford (on the opposite side of the floodplain to Louds Mill), crest 3.04m wide, modular to 4.6 cumecs but potential for non-modularity due to weed growth downstream. At Stinsford the river inundates the floodplain as it is not in the valley bottom, and there is potential for significant flow on the floodplain to bypass both gauges. The three sites are combined to produce a total flow record called Dorchester Total. Protected flows combining Louds Mill and Stinsford gauges. Bypassing through the floodplain between the 2 sites is significant. No rating shown on NRFA as it is a combined site.	Flows exist prior to October 1971 for Louds Mill only. Poor site, not rated at high flows. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Predominantly Chalk, with Upper Greensand and Gault, Lias and Oolites in headwaters. Land use is rural. No major catchment changes.	Minor gw abstractions in catchment.
44006	Sydling Water at Sydling St Nicholas	12.4	SY6323999649	363239.0	99649.0	50°47'42.8315"N 2°31'22.6148"W	50.79523	-2.52295	Sydling Water	Sydling St Nicholas	109.7	EA-WX	445410	44	1969-01-01		C		1.0	25.0	true	true	false	true	false	false	true	true	false	true	false	false	true	N	1969-12-01	2023-09-30	0.198	0.038	1976-08-19	1976-08-19	1.13	2014-01-05	2014-01-05	0.066	0.104	0.15	0.385	0.485	0.87	19662	19662	100.0	1969-09-01		0.901	109.3	131.8	192.4	243.1	264.4	1097	1030	0.0703	0.5454	0.3382	0.01	0.0108	0.0876	0.3401	0.5665	0.0011	0.0048	1.0					0.4904		0.38	0.879	0.944	128.9	13.35	40.8	51.5	11.5	6.32	3.33	188	169	0.18	109.3	12.05	0.11	0.564	0.0162	0.0018			0.0048					gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir built in 1969.	Crump profile weir built in 1969, crest 1.95m wide with brick side walls and stainless steel crest.	Modularity, previously of concern, due to weed growth and d/s channel geometry, improved by channel works. These factors may have influenced u/s levels earlier in the record. Upstream banks not well defined. Straight approach with rocky bed. Silt and gravel accumulation upstream is a recurring problem. Gauge is subject to some bypassing; overall effect not thought to be significant but may be appreciable at the most extreme flows. Bypassing commences at approx. 0.38m. Theoretical original rating, applicable to bankfull only. The upper limit at Sydling is at 0.3m/0.670cumecs. Gauged up to a level of 0.333m. Gauging agreed with extrapolation. One peak flow rating across period of rating.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Predominantly Lower Chalk with small outcrops of Middle and Upper Chalk forming higher ground flanking the catchment. Land use is pastoral with some arable agriculture on flatter ground. No major catchment changes.	Natural to within 10% at Q95.
44008	South Winterbourne at Winterbourne Steepleton	19.9	SY6298289732	362982.0	89732.0	50°42'21.7385"N 2°31'32.1412"W	50.70604	-2.52559	South Winterbourne	Winterbourne Steepleton	89.6	EA-WX	445610	44	1974-01-01		FV			60.0	true	true	true	true	false	false	false	true	false	false	false	false	false	G	1974-12-01	2023-09-30	0.111	0.002	1976-01-28	1976-02-14	1.33	2012-07-08	2012-07-08	0.014	0.034	0.066	0.26	0.376	0.88	17836	14011	78.555	1974-10-01		0.572	88.7	122.6	159.3	205.0	242.2	1045	1012	0.0584	0.5113	0.4021	0.0007	0.016	0.0844	0.5054	0.3988	0.0	0.0113	0.9585			0.0415		0.1401		0.38	0.811	1.0	93.8	19.53	39.3	50.1	11.3	10.12	5.05	160	115	0.22	88.7	20.18	0.112	0.665	0.015	0.0022			0.0042			1974..1985	1974-10-01..1986-10-01	gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir installed for low flow monitoring gauging a relatively small chalk catchment.	Flat V weir, 2.5m wide, installed in 1974 for low flow monitoring and year-round enforcement of minimum prescribed flow conditions on public water supply abstraction license.	Compensation flow input 1km upstream of weir, gauge virtually measures the extent of stream support. Some flow by-passing in smaller channel likely. Level at which by-passing commences is unknown. At a level of 0.275m (17/07/2012) the bypass channel was gauged at 2% of the total flow. Theoretical rating confirmed by gaugings. The upper limit at Winterbourne Steepleton is at 0.370m/0.928cumecs. One peak flow rating across the period of record.	In the past, low flows were measured by a thin-plate weir fitted downstream of weir crest at the same level and using the same water level recorders. HiFlows-UK included this period of record; the max gauged flow for the thin-plate weir is 0.85cumecs and QMED 0.445cumecs. Peak flows rejected pre-1986 due to rating uncertainty. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Relatively small chalk catchment. Land use is cattle grazing, rural. No major catchment changes.	Runoff influenced by groundwater abstraction and/or recharge. A pond is present upstream. Compensation flow input 1 km upstream of weir.
44009	Wey at Broadwey	7.0	SY6664483888	366644.0	83888.0	50°39'13.3528"N 2°28'23.5497"W	50.65371	-2.47321	Wey	Broadwey	17.8	EA-WX	446020	44	1975-01-01		FV	3.3	3.5	20.0	true	true	false	true	false	false	true	true	false	false	false	false	true	G	1975-07-01	2023-09-30	0.344	0.056	1989-10-08	1989-10-08	2.36	2012-07-07	2012-07-07	0.099	0.173	0.252	0.709	0.914	0.94	17624	17593	99.824	1975-06-16		1.79	17.7	42.8	104.1	153.3	187.3	937	894	0.0379	0.5265	0.3665		0.0482	0.0158	0.451	0.4859		0.0383	0.7636	0.1921	0.0372	0.0071			0.015	0.38	0.779	1.0	117.5	17.4	37.9	51.8	10.9	6.29	3.0	101	191	0.39	17.7	8.0	0.105	0.687	0.0157	0.0075	0.268	0.307	0.0233	0.64	0.301	1991		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V crump profile weir.	Flat V Crump profile weir, crest 4.5m wide, crest slopes 1:10.	Almost a full range station but bypassed along a road 1/2 mile u/s at highest flows. Structure capacity 3.3cumecs. Weedy river. First hand observation during 07/2012 event indicates the weir was still modular at 0.5m. Theoretical original rating. Upper limit of rating is 0.34m/1.02m3/s and flows are extrapolated beyond this limit. Flows affected by pumping at Friar Waddon. One peak flow rating across the period of record.	WY1991/1992 rejected as true AMAX likely occured during period of missing data. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Predominantly a limestone catchment, Kimmeridge Clay, Portland Sand, Purbeck beds. Land use is mainly pastoral agriculture. Runoff figures suggest topographical and hydrological catchment areas do not coincide. No major catchment changes.	Natural to within 10% at Q95. Sensibly natural regime, although substantial Gw abstraction affects headwaters at Upwey. Some hatch activity upstream but does not affect average daily flow.
44011	Asker at Bridport East Bridge	48.5	SY4701492756	347014.0	92756.0	50°43'55.1668"N 2°45'07.7164"W	50.73199	-2.75214	Asker	Bridport East Bridge	9.0	EA-WX	448301	44	1996-02-21		FVUS				true	true	true	true	false	false	false	true	false	false	false	false	false		1996-03-01	2023-09-30	0.694	0.147	2006-10-07	2006-10-07	20.3	2012-07-07	2012-07-07	0.219	0.338	0.478	1.33	1.9	0.64	10075	10075	100.0	1996-03-01		16.508	8.2	41.7	94.9	173.6	251.6	979	924	0.1333	0.2716	0.5525	0.0002	0.0351	0.1095	0.2539	0.6047	0.0018	0.03	0.4444	0.5058	0.0498			0.0214	0.1317	0.38	0.696	0.994	138.4	26.49	38.4	47.6	11.1	12.41	7.31	100	251	0.16	8.2	48.52	0.275	0.583	0.0249	0.0107	0.536	0.31	0.0154	0.719	0.289			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump weir with Time of Flight Ultrasonic added in 2005. Situated in the responsive catchment of the River Asker.	Station replaced Bridport (44003) in March 1996 at the same location but in a greatly modified channel, so held as separate stations.	Flat 'V' Crump profile weir, 6.3m wide (0.618m above weir crest width increases to 7.3m). Ultrasonic added in 2005 and used as primary flow measurement method when stage exceeds 0.957m. Modified channel means bypassing is no longer an issue. One peak flow rating across the period of record. Flat V theoretical to 0.154m, best fit to gaugings to 0.957m and derived from ultrasonic beyond 0.957m.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and August 2021 (WINFAP Files v10).	Responsive catchment due to steep slopes on Liassic clay and marl.	Rapidly responding flow regime makes gauging difficult.
44012	Piddle at South House	21.5	SY7074399087	370743.0	99087.0	50°47'26.1823"N 2°24'59.1728"W	50.79061	-2.41644	Piddle	South House		EA-WX	444110	44	1992-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false		1992-01-01	2023-09-30	0.171	0.0	1992-01-01	1992-02-29	2.9	2000-12-12	2000-12-12	0.031	0.058	0.098	0.379	0.57	0.78	11596	11288	97.344				92.2	124.9	163.1	220.0	260.6	1092	1010	0.0562	0.4529	0.4739		0.0095	0.0728	0.4501	0.4733		0.0038	0.9071	0.0847	0.0082			0.0104		0.38	0.861	1.0	130.4	14.93	39.0	50.9	11.2	7.85	4.02	167	143	0.15	92.2	21.52	0.104	0.742	0.0121	0.0027			0.0042					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station on the River Piddle active since 1992.	Coule of miles up stream of Little Piddle, installed to monitor abstraction.	Siltation issues. Culvert down stream can back up and create non-modular flow.		Small chalk catchment with predominantly rural land use.	Subject to public abstraction.
44013	Piddle at Little Puddle	34.8	SY7185596463	371855.0	96463.0	50°46'01.4359"N 2°24'01.6547"W	50.76707	-2.40046	Piddle	Little Puddle		EA-WX	444120	44	1993-01-01		FV				true	true	true	true	false	false	false	true	false	false	false	false	false		1993-01-01	2023-09-30	0.18	0.001	2003-10-13	2003-10-13	2.914	2000-12-14	2000-12-14	0.021	0.047	0.085	0.408	0.775	0.74	11230	11229	99.991	1992-01-01		0.933	75.0	108.5	146.8	208.1	260.6	1078	1002	0.04	0.5377	0.4032		0.0093	0.0588	0.5735	0.364	0.0003	0.0033	0.9413	0.0535	0.0052			0.0066		0.38	0.893	1.0	112.6	11.77	38.4	51.4	11.2	11.09	5.78	152	138	0.18	75.0	34.09	0.134	0.683	0.0155	0.003			0.0045			1992		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V crump weir built in 1992.	The station was built in 1992 with a Flat V Crump weir structure, 3.0m wide.	No evidence of bypassing but culvert upstream may interfere and surcharge at high flows causing ponding upstream and may cause attenuation of flood peak. All flows remain in bank, good fit to check gaugings. Can have lower flow than upstream station due to abstraction. One peak flow rating applied across period of record.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in September 2023 (WINFAP Files v12).	Predominantly Lower Chalk with small outcrops of Middle and Upper Chalk forming higher ground flanking the catchment. Mainly pastoral with some arable agriculture on flatter ground. No major catchment changes.	Subject to public abstraction.
44014	Piddle at Briantspuddle	112.0	SY8222093369	382220.0	93369.0	50°44'22.7579"N 2°15'12.0112"W	50.73965	-2.25334	Piddle	Briantspuddle		EA-WX	444310	44	1993-06		FV				true	true	false	true	false	false	false	true	false	false	false	false	false		1993-06-01	2023-09-30	1.31	0.038	1995-08-22	1995-08-22	10.55	2000-12-13	2000-12-13	0.198	0.451	0.764	3.033	4.528	0.84	11079	11078	99.991	1993-06-02		5.67	33.5	71.0	120.8	185.5	262.7	1049	969	0.0533	0.5619	0.3496	0.0017	0.0117	0.0568	0.6046	0.3281	0.0015	0.0085	0.9269	0.058	0.0151		0.0051	0.007	0.028	0.38	0.882	0.99	88.1	11.93	37.4	49.8	11.1	24.58	14.68	124	143	0.2	33.7	107.24	0.308	0.649	0.0358	0.0033			0.0051	0.53	0.758	1992		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V crump weir for low flow monitoring.	Flat V Crump weir 6.0m broad for low flow monitoring.	Station bypassed substantially at high flows. Non-modular flow at about 0.55m. Well-maintained structure. Drowning is an issue due to weed growth but weed regularly cut. Bypassing and unstable bed. Some raising of banks upstream carried out in 2001 to reduce bypassing. One peak flow rating applied across period of record.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Predominantly Lower Chalk with small outcrops of Middle and Upper Chalk forming higher ground flanking the catchment. Mainly pastoral with some arable agriculture on flatter ground. No major catchment changes.	No major flow regime influences.
44015	Hooke at Hooke	11.8	ST53760003	353760.0	100030.0	50°47'52.7144"N 2°39'26.9296"W	50.79798	-2.65748	Hooke	Hooke		EA-WX	445210	44	1992-12		FV				true	true	false	true	false	false	false	true	false	false	false	false	false		1992-01-01	2023-09-30	0.205	0.063	1992-09-16	1992-09-16	2.013	2012-07-07	2012-07-07	0.086	0.127	0.172	0.361	0.435	0.89	11596	11517	99.319	1989-06-01		1.66	132.8	158.9	204.7	237.1	252.9	1071	1033	0.052	0.5216	0.4356		0.0085	0.0624	0.3633	0.5852	0.0035	0.0045	0.6903	0.3097				0.4336		0.38	0.605	0.916	80.3	37.86	41.5	51.7	11.6	7.27	3.6	204	157	0.24	134.9	10.75	0.157	0.579	0.0184	0.0002			0.0014			1991		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	GRP flat V Crump weir built in 1989 affected by siltation in upstream section.	Station was built in 1989. GRP flat V Crump weir, 3m wide. Station number previously 44801.	Frequent silt / gravel accumulation occurs upstream of the weir and in approach channel. No known modularity problems. Two peak flow ratings applied across period of record.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	The catchment area consists mainly of Upper Cretaceous, Upper Chalk and Upper Greendsand. Top end is a chalk stream. Land use mostly rural. No major catchment changes.	Some spring abstraction. Fish farm upstream of station.
45001	Exe at Thorverton	600.9	SS9360201602	293602.0	101602.0	50°48'15.0265"N 3°30'40.7121"W	50.80417	-3.51131	Exe	Thorverton	25.9	EA-DC	SS90F011	45	1956-01-01		FVVA	185.0		11.8	true	true	true	true	false	true	false	true	true	true	true	true	true	SRPGEI	1956-04-30	2022-09-30	16.159	0.421	1976-08-27	1976-08-27	286.0	1960-12-04	1960-12-04	2.03	4.97	8.939	39.1	53.4	0.5	24260	24260	100.0	1956-04-12		175.847	27.6	117.2	235.7	382.8	516.8	1302	1249	0.1497	0.1285	0.6671	0.0276	0.0237	0.1253	0.1237	0.7147	0.0207	0.0129		0.1565	0.8435		0.0111	0.0057	0.0285	0.46	0.526	0.985	137.9	36.0	42.2	57.4	11.8	77.16	38.36	245	163	0.14	27.6	608.16	0.452	0.699	0.0314	0.0025			0.0061	0.747	0.513	1955		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with flat V bed control. Control point for operational releases from Wimbleball Reservoir.	Station started in 1956. Velocity-area station, approx. 32m wide. Non-standard flat V bed control constructed in 1973. Station is control point for operational releases from Wimbleball Reservoir. Station immediately below a bridge.	Cableway present. Significant gravel deposition, and post-winter shoaling since major failure of upstream weir in 1999 which may affect flows, despite significant effort to ameliorate through frequent gauging and rating adjustments. Some flow (a minor amount) escapes from a mill upstream and bypasses the station through a 1m culvert under the road. The right bank has a considerable flood plain. Multiple peak flow ratings across the period of record.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Headwaters drain Exmoor. Geology predominantly Devonian sandstones and Carboniferous Culm Measures, with subordinate Permian sandstones in the east. Moorland, forestry and a range of agriculture. No major catchment changes.	Wimbleball Reservoir in catchment affects runoff. Other abstractions and recharge in catchment.
45002	Exe at Stoodleigh	421.7	SS9428117801	294281.0	117801.0	50°56'59.6995"N 3°30'22.9158"W	50.94992	-3.50637	Exe	Stoodleigh	74.5	EA-DC	SS91F008	45	1960-01-01		VA	150.0		6.0	true	true	true	true	false	false	false	true	false	false	false	false	false	SRPE	1960-03-31	2023-09-30	12.773	0.421	1976-08-28	1976-08-28	211.0	1965-12-18	1965-12-18	1.73	4.17	7.59	30.17	40.9	0.51	23194	22836	98.456	1960-04-01		140.651	76.6	164.1	286.2	399.6	516.8	1420	1361	0.1631	0.0804	0.702	0.0389	0.0114	0.1227	0.0387	0.8002	0.029	0.0055		0.0606	0.9394			0.0082	0.012	0.48	0.495	0.979	142.3	37.95	45.9	62.4	12.1	55.96	26.85	285	168	0.15	76.6	420.69	0.323	0.799	0.0215	0.0004			0.0017			1959		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway on straight stable length of river.	Velocity area station in a natural section with cableway sited on a straight, stable length of river.	Low flow controlled by a stone ledge 50m d/s of the gauge. Channel section 24 m wide. Full range, calibrated to above bankfull. Liable to backing up at bridge immediately upstream in highest floods. Flood relief culvert under road on right bank. Level sensors in stilling well replaced by radar sensors on road bridge in May 2022 - higher flood peaks recorded after this point, but rating adjusted for change.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	The catchment is entirely within the Exmoor National Park; headwaters drain Exmoor. The solid geology of the catchment is predominantly of Devonian and Carboniferous age; Devonian sandstones and Culm Measures. Relatively impermeable catchment. Moorland headwaters, grazing land and forestry. Some agricultural land may be found near to the station. Entirely rural. No major catchment changes.	Flow significantly affected by Wimbleball Reservoir regulation at low flows post-1979.
45003	Culm at Woodmill	226.1	ST0206605773	302066.0	105773.0	50°50'35.3937"N 3°23'32.4498"W	50.84316	-3.39235	Culm	Woodmill	44.0	EA-DC	ST00F008	45	1962-01-01		FVVA	42.0		13.7	true	true	true	true	false	false	false	true	false	false	false	false	false	PGEI	1962-01-29	2023-09-30	3.801	0.439	1976-08-23	1976-08-23	83.9	2012-11-21	2012-11-21	1.02	1.594	2.28	8.13	12.0	0.54	22525	22525	100.0	1962-01-29		70.561	44.9	70.7	142.4	249.2	294.7	995	971	0.1028	0.29	0.5355	0.0031	0.0647	0.0949	0.3341	0.5269	0.0076	0.0359	0.1249	0.6577	0.0336	0.1838	0.0784	0.2047	0.0702	0.4	0.585	0.993	70.1	31.82	36.0	47.0	11.1	30.63	15.82	153	233	0.06	44.9	228.91	0.575	0.631	0.065	0.0038			0.0139	0.701	0.654	1961		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Shallow V weir built in 1972 to replace previous velocity-area section with cableway.	Originally a velocity-area station with a cableway, reliable records began in 1962. The river was regraded and downstream obstructions were removed in August 1965. Station rebuilt between 1971 and 1973, and during this period a temporary recorder was installed downstream. New weir fully operative from 08/1973 - an informal shallow V weir, 11.45 m overall width, 1:26 side slopes, 1:18 u/s and d/s slopes.	Weir acts as a low flow control, with channel control when structure is drowned. Full range. Widespread upstream inundation during floods. Multiple peak flow ratings across period of record. Ratings extended to include modelled out-of-bank flows. Bypassing probably occurs at about 2 m, u/s on the left bank, and the station is likely to be outflanked at any stage greater than 2.3 m. Shoal development has led to a number of ratings across period of record, with different low flow limbs. High flow limbs very similar, so simplified rating record applied to data. Current rating uses hydraulic modelling to extend beyond gauged range. Some out of bank gaugings help validate rating. Ratings for velocity-area station derived from gaugings, with some slope-area estimates above bankfull. Upper segment of rating for the temporary recorder 1971-73 derived by correlation between the sites.	Shoaling on structure may affect flows from 1998 until river bed re-profiling in 2008, despite rating adjustments. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Rises in the Blackdown Hills. Headwaters drain Greensand and Gault Clay. Predominantly Permo-Triassic sandstones, breccias and marls with extensive valley gravels and alluvium. The catchment has a subdued relief and is predominantly agricultural; the largest settlement is Cullompton. Small areas of woodlands in the east. No major catchment changes.	Runoff reduced by public water supply abstraction. Runoff influenced by groundwater abstraction/recharge. Runoff increased by effluent returns. Runoff reduced by industrial/agricultural abstraction. Moderate surface and groundwater abstractions affect low flows.
45004	Axe at Whitford	288.5	SY2620895324	326208.0	95324.0	50°45'10.0993"N 3°02'50.7173"W	50.75281	-3.04742	Axe	Whitford	7.3	EA-DC	SY29F052	45	1964-01-01		CCVA		75.0	8.2	true	true	false	true	false	false	false	true	false	false	true	false	false	PGEI	1964-10-01	2022-09-30	5.311	0.453	1976-08-07	1976-08-07	177.0	2012-07-07	2012-07-07	1.26	1.99	2.85	11.3	18.2	0.48	21184	21184	100.0	1964-11-05		108.484	7.9	65.4	134.1	216.6	591.8	1052	994	0.0934	0.3095	0.5611	0.0006	0.034	0.0792	0.3873	0.5066	0.0022	0.0243	0.1232	0.4461	0.2208	0.2099	0.0733	0.2146	0.0581	0.39	0.498	0.996	90.2	38.81	40.1	51.9	11.4	39.8	21.02	138	123	0.03	7.9	288.56	0.409	0.742	0.0384	0.0045			0.0109	0.723	0.903			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir downstream of Whitford Bridge. Initially installed to measure low flows but now a full range station.	Compound Crump profile weir, total width 21.3m, low flow section 7.6m broad. Cableway on site. Installed primarily to measure low flows. Since 2009, Velocity area station for medium flows, modelled rating for high flows.	Structure limit 2.1 m stage. Overspill at 1.65m on left bank fields; in large floods considerable bypassing. In-channel deposition becoming an increasing problem: A significant amount of gravel has built up between the upstream side of the weir and the road bridge. Bypassing included in the modelled rating. Bed-mounted ADCP added in 09/2009, when weir becomes non-modular flows are calculated using this until bypassing occurs, then reverts to modelled high flow rating.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Extremely complex catchment of moderate relief draining Chalk and Greensand headwaters. Middle and lower reaches Mercia Mudstone; Lias clays and more Greensand. Land use is meadowland, low intensity agriculture, woodland and minor industrial development. No major changes in catchment.	Runoff influenced by groundwater abstraction/recharge. Abstraction for public water supply and industrial/agricultural purposes. Flows increased by effluent returns.
45005	Otter at Dotton	202.5	SY0866588435	308665.0	88435.0	50°41'18.1388"N 3°17'39.6142"W	50.68837	-3.29434	Otter	Dotton	14.5	EA-DC	SY08F055	45	1963-01-01		FVVA	88.0		10.1	true	true	false	true	false	true	true	true	true	true	true	true	true	PGEI	1962-09-30	2023-09-30	3.229	0.444	1976-08-27	1976-08-27	86.4	2012-07-07	2012-07-07	0.973	1.411	1.89	6.58	10.3	0.53	22281	22281	100.0	1962-09-20		69.66	16.5	64.9	131.8	248.0	302.2	1016	971	0.1287	0.3566	0.4252	0.0093	0.0706	0.1006	0.391	0.4456	0.0209	0.0414	0.2768	0.3169		0.4064	0.1285	0.1871	0.061	0.4	0.549	0.996	85.0	34.34	38.4	49.5	11.4	41.11	19.9	144	195	0.11	16.5	202.83	0.505	0.746	0.0503	0.0079	0.777	0.824	0.0241	0.749	0.712	1961		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station opened in 1962 and rebuilt after 1968 flood, weir built in 1971.	Velocity area station with cableway. Station opened in 10/1962. Hut rebuilt after July 1968 flood. 14m wide informal shallow Flat V weir installed 1971. Initially for Water Resources, more recently considered full range with FCRM interest.	Natural control up until weir installed in 1971. Now considered a full range station. Low embankments at field level extend containment. Gabions stabilise bed and banks. Bypassing occurs during exceptional events (>2.1m). Multiple ratings applied across period of record; high flow events in Nov/Dec 2000 altered channel geometry u/s and d/s of station. Ratings after this period include estimates for out of bank flow.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Rises in Greensand and Gault Clay of the Blackdown Hills. Predominantly Keuper sandstones and marls. Extensive alluvium and valley gravels lower down. Some heathland, woodland and pasture, and a wide range of agriculture. No major catchment changes.	Substantial groundwater and surface water abstractions in catchment for public water supply and industrial/agricultural purposes. Flows increased by effluent returns.
45006	Quarme at Enterwell	20.4	SS919356	291900.0	135600.0	51°06'34.0860"N 3°32'44.0233"W	51.10947	-3.54556	Quarme	Enterwell	187.5	EA-DC		45	1964-01-01	1967-12-31	CB		12.5	9.5	true	false	false	false	false	false	false	false	false	false	false	false	false	P	1964-10-01	1967-09-30	0.694	0.071	1964-10-01	1964-10-01	11.75	1965-12-18	1965-12-18	0.127	0.272	0.43	1.475	2.03	0.56	1095	1095	100.0				189.6	246.4	322.9	438.9	516.8	1530	1420	0.1333	0.0523	0.7257	0.0793	0.0094	0.0628	0.074	0.7949	0.0666	0.0017			1.0					0.54	0.514	1.0	153.6	37.01	50.2	67.3	12.2	10.93	5.35	329	177	0.26	189.6	19.97	0.115	0.704	0.0094	0.0005			0.0008					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Broad-crested weir on the River Quarme, a tributary to the River Exe, draining areas of high moorland in Exmoor.		Compound broad-crested weir 6m wide with a 2.1m central notch. High stages well contained by high banks each side.		Drains area of high moorland (Exmoor) in west Somerset. Tributary of the River Exe. Steep, wooded valley sides in lower catchment.
45007	Exe at Trews Weir	1191.3	SX9224691881	292246.0	91881.0	50°42'59.5338"N 3°31'39.7066"W	50.71654	-3.5277	Exe	Trews Weir	5.2	EA-DC	SX99U053	45	1996-10		US				true	true	true	true	false	false	false	true	false	false	true	false	false	SRPGEI	1996-11-08	2023-09-30	25.364	1.804	2022-08-14	2022-08-14	351.0	2000-10-30	2000-10-30	4.066	8.26	13.8	61.5	84.75	0.5	9823	9801	99.776	1997-02-01		260.69	4.6	66.4	171.3	341.6	516.8	1138	1090	0.1298	0.2351	0.5717	0.0149	0.0454	0.1187	0.2761	0.566	0.0129	0.0245	0.0264	0.3223	0.6155	0.0358	0.0347	0.0423	0.0544	0.44	0.558	0.989	114.6	33.69	38.6	51.9	11.5	92.94	41.97	187	164	0.1	4.6	1193.68	0.589	0.699	0.0496	0.0052	0.545	0.246	0.0124	0.776	0.527			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station at Exeter Quay approximately 300m upstream of the actual 'Trews Weir' structure.	Ultrasonic station at Exeter Quay approximately 300m upstream of the actual 'Trews Weir' structure. Channel about 45m wide. Initially built for Water Resources, but now multifunctional. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	The performance of the gauge has improved over time with upgrades to the ultrasonic equipment. Limited bypassing at high flows. Very low velocities during periods of low flows have historically caused some performance issues. There is a lot going on here, with the mouth of Exeter Canal feeding from the weir pool, as well as Trews Weir Radial gate, bypass channel, fish pass and 'overspill weir' to the flood relief channel all having an impact on the regime. The level of the 'overspill weir' to the flood relief channel was lowered in 2015. The gauge has sustained damage during high flow events - most notably in the October 2000 floods.	According to EA, level data and few gaugings with one poor rating available from 09-78 to 09-81. Site closed as considered unsuitable for stage-discharge rating (due to weir, flood gates, boat traffic, canal offtake, etc.). 15 minute record is variable at first (though daily means could be reasonable) but record improves over time. Site damaged in 10-2000 flood and loses flow subsequently to 08-2001. Site upgraded at end 2006 and now much better.	The Exe headwaters drain Exmoor. Geology predominantly Devonian sandstones and Carboniferous Culm Measures, with subordinate Permian sandstones in the east. Moorland, forestry and a range of agriculture. No major catchment changes. The Culm rises in the Blackdown Hills. Headwaters drain Greensand and Gault Clay. Predominantly Permo-Triassic sandstones, breccias and marls with extensive valley gravels and alluvium. The catchment has a subdued relief and is predominantly agricultural; the largest settlement is Cullompton. Small areas of woodlands in the east. No major catchment changes.The Creedy is a v-shaped catchment draining moderate to high relief valleys to the N and W. Predominantly Culm Measures, sandstones and shales with some Permo-Triassic breccias and sandstones near Crediton. Low grade agriculture, grazing and forestry. No major catchment changes.	Wimbleball Reservoir in catchment affects runoff. Runoff also reduced by other public water supply abstraction. Runoff influenced by groundwater abstraction/recharge. Runoff increased by effluent returns. Runoff reduced by industrial/agricultural abstraction. Moderate surface and groundwater abstractions affect low flows.
45008	Otter at Fenny Bridges	104.2	SY1145498573	311454.0	98573.0	50°46'47.8170"N 3°15'26.2942"W	50.77995	-3.2573	Otter	Fenny Bridges	54.7	EA-DC	SY19F052	45	1974-01-01		FVVA	73.0		13.7	true	true	true	true	false	false	false	true	false	true	false	false	true	P	1974-08-31	2023-09-30	2.142	0.218	1976-08-22	1976-08-27	51.4	2012-07-07	2012-07-07	0.529	0.82	1.16	4.54	7.11	0.48	17928	17928	100.0	1974-08-31		63.196	56.9	103.9	185.1	256.2	302.2	1075	1040	0.1233	0.3784	0.436	0.0021	0.0532	0.0962	0.3164	0.5358	0.0133	0.038		0.4604		0.5396	0.076	0.3402	0.0372	0.4	0.491	0.994	92.9	38.03	40.5	52.4	11.5	27.23	13.36	183	184	0.08	56.9	105.29	0.363	0.702	0.0361	0.0092	0.825	0.567	0.0192	0.825	0.609	1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened in 1974 in middle section of 3-arch bridge.	Velocity area station opened in 1974, incorporated in middle section of 3-arch bridge, with Flat V control and cableway.	Bridge invert acts as control at high levels. Right bank likely to be over-topped at 2.2m stage when bypassing is likely. Good station. Weir crest repaired in 1994 (to similar level). One velocity-area rating extended to high flows applied across period of record. Excellent fit to gaugings across stage range.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Rises in the Greensand and Gault Clay of the Blackdown Hills. Keuper Marl in the lower reaches. Heathland, pasture and a range of agriculture. Includes urban area of Honiton. No major catchment changes.	Minor surface water abstractions in catchment including some for public water supply, but generally natural flow regime.
45009	Exe at Pixton	159.7	SS9349325960	293493.0	125960.0	51°01'23.2079"N 3°31'11.9039"W	51.02311	-3.51997	Exe	Pixton	128.0	EA-DC	SS92F014	45	1966-01-01		VA	90.0		13.3	true	true	true	true	false	false	false	true	false	false	false	false	false	SRP	1966-04-28	2023-09-30	4.5	0.083	1976-08-21	1976-08-22	74.3	2012-12-22	2012-12-22	0.795	1.49	2.48	10.7	14.7	0.52	20975	20975	100.0	1966-04-28		47.385	117.1	228.0	310.0	398.4	516.8	1441	1375	0.1599	0.0611	0.726	0.0321	0.0106	0.1171	0.0339	0.7885	0.0462	0.0036			1.0			0.0059	0.0018	0.51	0.548	0.95	154.2	34.63	47.8	65.5	12.2	36.67	15.23	309	185	0.2	117.1	147.82	0.238	0.819	0.0169	0.0001			0.0012			1965		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Full range velocity area station.	Full range velocity area station in natural section immediately d/s of bridge. The bridge washed away in 1960. Channel about 12m wide.	Shallow rock bar d/s of station is natural low flow control. Influence of bridge soffit upstream of station is unknown, although rating is thought to be reliably extrapolated to bankfull. No bypassing. Multiple ratings across period of record.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	The catchment is entirely within the Exmoor National Park. Headwaters rise on Exmoor. Solid geology, predominantly Upper Devonian Grit and Shale. South of this is a transitional group, between the Devonian and Carboniferous. Catchment is virtually drift free. Land use is a combination of moorland, rough grazing and forestry. Wimbleball Reservoir impoundment in 1978.	Minor abstractions in catchment including some for public water supply. Low flows significantly affected by Wimbleball Reservoir post-1979.
45010	Haddeo at Hartford	50.0	SS952294	295200.0	129400.0	51°03'15.6596"N 3°29'47.9032"W	51.05435	-3.49664	Haddeo	Hartford	164.0	EA-DC		45	1973-01-01	1979-12-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1973-01-01	1979-12-31	1.102	0.016	1976-08-22	1976-08-22	14.21	1974-02-10	1974-02-10	0.076	0.394	0.687	2.512	3.43	0.56	2556	2556	100.0				161.2	246.3	310.0	372.3	422.4	1340	1264	0.1193	0.0886	0.7335	0.016	0.0122	0.0932	0.008	0.8539	0.0096	0.0034			1.0					0.46	0.584	0.859	109.3	31.82	43.9	61.7	11.8	10.91	6.5	308	198	0.26	161.2	49.76	0.093	0.88	0.0084	0.0			0.0009					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station located in steep wooded valley, approximately 1km downstream of Wimbleball Reservoir.	Velocity area station located in steep wooded valley, approximately 1km downstream of Wimbleball Reservoir.				Flows heavily influenced by reservoir regulation.
45011	Barle at Brushford	128.0	SS9269525832	292695.0	125832.0	51°01'18.5310"N 3°31'52.7127"W	51.02181	-3.53131	Barle	Brushford	128.0	EA-DC	SS92F008	45	1968-01-01		VA				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1967-09-30	2023-09-30	5.252	0.209	1976-08-24	1976-08-24	132.0	2012-12-22	2012-12-22	0.614	1.844	3.3	11.9	16.1	0.51	20455	17745	86.751				116.8	261.3	355.4	431.5	490.5	1675	1590	0.1446	0.0199	0.7404	0.0876	0.0073	0.0724	0.016	0.8673	0.0392	0.0051			1.0			0.0204	0.0026	0.54	0.447	0.999	135.7	42.89	52.5	69.6	12.9	40.63	22.28	348	150	0.17	116.8	126.36	0.343	0.781	0.0202	0.0005			0.0013					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station at road bridge 800m upstream of confluence with River Exe.	Velocity area station at road bridge 800m upstream of confluence with River Exe.	Natural bed control at low flows with channel control at medium/high flows. Unstable relationship below ~1m (~25 cumecs). Rating reviewed in 2012 and modelled stage-discharge relationship applied to historic record above this level.		Drains high moorland (Exmoor) in west Somerset. Steep, wooded valley sides in lower catchment.
45012	Creedy at Cowley	261.6	SX9009396723	290093.0	96723.0	50°45'34.7754"N 3°33'34.6574"W	50.75966	-3.55963	Creedy	Cowley	14.2	EA-DC	SX99F052	45	1964-01-01		VA	110.0		10.8	true	true	true	true	false	false	false	true	false	false	false	false	false	GE	1964-03-23	2023-09-30	3.713	0.08	1976-08-17	1976-08-26	108.0	2000-12-07	2000-12-07	0.327	0.799	1.633	9.32	14.2	0.46	21741	21629	99.485	1964-03-23		75.623	16.7	56.5	123.2	194.9	293.5	969	909	0.119	0.3891	0.4474	0.001	0.042	0.1225	0.5101	0.3524	0.0027	0.0124		0.2894	0.7106		0.013		0.0616	0.46	0.577	0.993	111.3	31.96	33.9	46.0	11.3	30.57	16.44	124	114	0.1	16.7	263.63	0.421	0.634	0.0401	0.0023			0.0088	0.737	0.816			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in deep cutting.	Velocity area station in deep cutting. Rock bars form low flow control.	Flood flows contained by railway tracks on the left bank and, on the right bank, by rock walls, gabions and a newly constructed Crib wall (03/2006) which extends along a large section upstream of the control. Bypassing minimal but occurs on left bank at very high flows. River bed re-profiled (shoal removed) following construction works in 2006, with multiple low flow ratings required since then due to shoaling. Flows above ~12 cumecs derived from modelled rating, though peak flows in 1999 and 2000 still considered overestimated. Current metering by wading for low flows. Multiple peak flow ratings applied across period of record however only upper limb shown. Low flow re-rating adjustments not shown. Upper limb derived from hydraulic model with good fit to available gaugings.	02/1995 flows missing due to station hut replacement. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	A v-shaped catchment draining moderate to high relief valleys to the N and W. Predominantly Culm Measures, sandstones and shales with some Permo-Triassic breccias and sandstones near Crediton. Low grade agriculture, grazing and forestry. No major catchment changes.	Runoff influenced by groundwater abstraction/recharge. Runoff increased by effluent returns.
45013	Tale at Fairmile	34.4	SY0881097112	308810.0	97112.0	50°45'59.0546"N 3°17'39.9613"W	50.7664	-3.29443	Tale	Fairmile	48.2	EA-DC	SY09E073	45	1978-01-01		US	11.5			true	true	false	true	false	false	false	true	false	false	false	false	false	N	1978-09-06	2023-09-30	0.444	0.034	1985-07-25	1985-07-25	9.15	2016-11-21	2016-11-21	0.125	0.193	0.251	0.902	1.423	0.53	16461	15837	96.209	1978-09-06		10.424	48.3	76.1	105.3	206.6	282.6	958	922	0.0968	0.3546	0.4492	0.0017	0.0786	0.0902	0.5356	0.3618	0.0036	0.0084	0.3612	0.3192		0.3196	0.2014	0.0631	0.0471	0.4	0.514	0.998	62.9	36.1	35.2	45.0	11.1	14.24	7.19	123	227	0.27	48.3	31.43	0.433	0.771	0.0481	0.0001			0.0092	0.546	0.792	2001		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	US station installed to replace previous velocity area and EM stations.	US system installed in 05/2010 to replace problematic EM flow gauge. Original station opened in 1978 with an unstable bed control, underneath a bridge. Channel width approximately 7m. The control shifted every time a flood occurred. A new electromagnetic station 50 m downstream replaced the original station in 01/1999 (recording since 17/01/99). New EM station overcame the previous problems with the unstable bed control with a concrete block weir used as a control. Subsequently replaced by US station.	Proportionally high summer flows due to groundwater augmentation from regionally important aquifer. Complex rating history, with considerable scatter in high flow gaugings. Bypassing occurs. Flows > 7 cumecs outside the range of the EM gauge, mainly in winter. Multiple ratings applied across period of record, the most recent velocity-area rating is valid until site became electromagnetic in 1999. Changes in rating a result of regular shift in station control.	DMFs removed from NRFA from 09/1997 to 01/99. Some flows between 09/2008 and 03/2009 considered suspect. Data prior 1999 needs to be treated with caution.	Upper catchment is Greensand and Gault Clay of Blackdown Hills; lower reaches are Keuper Marl. Otter Sandstone (aquifer) to the south provides regionally important groundwater supply. Rural, predominantly agricultural land use. No major catchment changes.	Proportionally high summer flows due to groundwater augmentation from regionally important aquifer.
45816	Haddeo at Upton	6.7	SS98822888	298820.0	128880.0	51°03'01.1714"N 3°26'41.5060"W	51.05033	-3.44486	Haddeo	Upton		EA-DC	SS92F056	45	1993-06		FVVA				false	true	true	true	false	false	false	false	false	false	false	false	false																				1993-01-28		3.352	237.1	264.1	312.8	356.8	384.0	1293	1210	0.1749	0.0835	0.7194	0.004	0.0182	0.1011	0.0095	0.8814	0.0056	0.0023			1.0					0.37	0.59	1.0	81.0	31.27	41.8	60.4	11.7	6.01	3.07	310	210	0.24	237.1	6.81	0.117	0.734	0.0114	0.0			0.005			1992		cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir opened in 1993.	Station opened in 01/1993 with a Flat V weir, crest length approximately 5m wide. Relatively straight approach with a stable bed. Velocity area station for higher flows.	No bypassing or drowning out. Considered a good station. Station just upstream of Wimbleball Reservoir. Bankfull at 1.6m. One rating applied across period of record confirmed to 0.5m by spot flow gaugings.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Relatively small catchment area consisting mostly of Upper Devonian sandstones, siltstones and slates. Land use is mainly rural and agricultural. No major urbanisation in the catchment. Wimbleball Reservoir impounded 1978.	Wimbleball Reservoir is just a few meters downstream.
45817	Unnamed Stream at Upton	1.9	SS98832897	298830.0	128970.0	51°03'04.0903"N 3°26'41.0832"W	51.05114	-3.44475	Unnamed Stream	Upton		EA-DC	SS92F057	45	1993-06		FVVA				false	true	false	true	false	false	false	false	false	false	false	false	false																				1993-02-10		1.17	239.0	260.4	285.2	320.9	332.2	1295	1207	0.0178	0.1175	0.861		0.0038	0.0062	0.0055	0.987	0.0014				1.0					0.54	0.603	1.0	67.8	31.55	41.6	61.2	11.7	2.74	1.4	287	178	0.46	239.0	1.74	0.141	0.718	0.0172	0.0			0.0022			1992		cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir opened in 1993.	Station opened in 1993 with a Flat V weir, approximately 2m wide. Relatively straight approach. Velocity area station for higher flows.	One rating applied across period of record confirmed to 0.33m by spot flow gaugings.	Bypassed in 2000 due to branches in the river. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Small natural catchment, consisting mostly of Upper Devonian sandstones, siltstones and slates. Land use is mainly rural and agricultural. No major urbanisation in the catchment. Wimbleball Reservoir is further downstream. No major catchment changes.	Natural catchment.
45818	Withiel Florey Stream at Bessom Bridge	9.92	SS98033264	298030.0	132640.0	51°05'02.3460"N 3°27'25.8866"W	51.08399	-3.45719	Withiel Florey Stream	Bessom Bridge		EA-DC	SS93F030	45	1992-11		FVVA				false	true	false	true	false	false	false	false	false	false	false	false	false																				1992-10-22		4.345	238.9	279.4	343.6	394.5	411.7	1340	1271	0.0601	0.0979	0.8218		0.0132	0.0398	0.0028	0.953	0.0007	0.0037			1.0					0.42	0.578	1.0	103.6	32.48	44.2	61.5	11.9	4.61	2.61	338	214	0.37	238.9	9.54	0.062	0.617	0.0055	0.0			0.0					cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad crested flat V weir opened in 1992.	Station opened in 1992 as a broad crested Flat V weir, crest length approximately 4m. Relatively straight reach with stable river bed. Footbridge approx.12m downstream of the station. Velocity area station for higher flows.	Well-built station and good control. Bypassing and weed growth are not an issue, but some drowning. Potential for blockage of culverts under footbridge downstream during high flows which may affect levels and drown out weir. One rating applied across period of record. Confirmed by gaugings to 0.6m, above which available gaugings fit poorly to rating and indicate overestimation of flows.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Small catchment area consists mainly of Upper Devonian siltstones and slates. Entirely rural catchment area with natural flow regime. Wimbleball Reservoir downstream of the station. No major catchment changes.	Fish farm upstream causes fluctuations in low flows.
46002	Teign at Preston	381.0	SX8556674554	285566.0	74554.0	50°33'34.2112"N 3°37'00.9264"W	50.5595	-3.61692	Teign	Preston	3.8	EA-DC	SX87F051	46	1956-04-30	2007-05-10	VA	86.0		9.3	true	false	false	false	false	false	false	false	false	false	true	false	false	SRPE	1956-04-30	2007-05-10	9.276	0.331	1976-08-28	1976-08-28	243.0	1979-12-27	1979-12-27	1.11	2.79	5.09	22.1	31.5	0.55	18638	18638	100.0				5.2	65.7	204.8	390.5	601.5	1226	1230	0.2697	0.1577	0.4661	0.0558	0.0449	0.2719	0.2377	0.4136	0.0585	0.0162		0.0861	0.9047	0.0092	0.0035	0.0499	0.0741	0.46	0.585	0.981	131.3	25.58	47.9	64.6	12.4	50.86	22.71	215	92	0.13	5.2	377.76	0.372	0.803	0.033	0.0027			0.011	0.763	0.497			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station on the River Teign downstream of the confluence with the River Bovey.	Velocity area station, channel width approximately 15m. Flow measurement effectively ceased in May 2007 but level recording remains.	Cableway removed but steel footbridge remains. Bypassing on right bank occurring at greater frequency due to bank erosion some distance upstream. Some accommodation of bypass flows in historic rating. Low flow control is a downstream gravel shoal.		Bulk of the river system rises on Dartmoor Granite moorland, and traverses a complex of Devonian and Carboniferous shales, sandstones and cherts before its wide alluvial valley crosses Tertiary sands and clays. Land use is low-grade agriculture and woodland.	Four reservoirs and various water reclamation works have minor effect on low flow regime.
46003	Dart at Austins Bridge	247.6	SX7511265841	275112.0	65841.0	50°28'44.5512"N 3°45'41.4799"W	50.47904	-3.76152	Dart	Austins Bridge	22.4	EA-DC	SX76F051	46	1958-01-01		VA	418.0		7.8	true	true	true	true	false	true	true	true	false	false	true	true	true	SR	1958-09-30	2023-09-30	11.478	0.585	1976-08-27	1976-08-27	267.0	1979-12-27	1979-12-27	1.62	4.13	7.001	26.2	36.1	0.51	23742	23742	100.0	1958-09-19		231.2	24.4	125.1	348.1	479.4	601.6	1703	1771	0.1726	0.0542	0.5588	0.182	0.0303	0.1584	0.08	0.5399	0.211	0.0102			1.0		0.0017	0.1296	0.0496	0.47	0.523	0.995	121.1	32.88	63.1	83.1	13.8	38.83	20.23	327	131	0.15	30.0	249.99	0.521	1.052	0.036	0.0036			0.0067	0.683	0.367			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway. Longest record on the River Dart.	Velocity area station with cableway, main channel approximately 30m wide. Station significantly improved in 1973. Full range station serving Water Resources and Flood Warning purposes.	Rock step forms downstream control, with variation in amounts of retained gravel causing some changes at low flows. The river has a stable rock bed at the station. Channel contains the mean annual flood. Well rated. Rating reviewed after 1979 record flood overtopped 4.2m walls on right bank causing bypassing.	Records available from 10/1958 but unreliable prior to 01/05/1960. December 1979 flood changed channel geometry at station and control. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Responsive catchment with upper two thirds draining moorland associated with Dartmoor Granite; lower third is of Carboniferous shales and sandstones. Steep relief in headwaters and at Granite boundary. Land use is low-grade agriculture and woodland. No major catchment changes.	Regulation of surface water and groundwater. Venford Reservoir operation affects low flows, exporting via the Devonport leat. Abstractions.
46005	East Dart at Bellever	21.5	SX6571277570	265712.0	77570.0	50°34'56.5774"N 3°53'53.3692"W	50.58238	-3.89816	East Dart	Bellever	309.0	EA-DC	SX67F051	46	1964-01-01		VA	50.0		10.0	true	true	true	true	false	false	true	true	true	true	true	false	true	N	1964-03-31	2023-09-30	1.28	0.096	1976-08-26	1976-08-26	29.0	1979-12-27	1979-12-27	0.203	0.442	0.707	2.85	4.25	0.44	21733	21733	100.0	1964-03-31		37.406	309.1	358.3	462.3	552.3	601.6	1998	2095	0.0861		0.4286	0.48	0.0053	0.0581		0.4308	0.5111				1.0			0.3672		0.46	0.363	1.0	95.0	47.42	67.1	91.2	14.2	13.73	6.46	459	145	0.25	309.1	22.27	0.588	0.863	0.042	0.0			0.0004			1963		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, channel width approximately 11.5m; cableway approximately 26m.	Velocity area station, channel width approximately 11.5m; cableway approximately 26m. Flood warning station.	A natural rock step provides the control, with a low containment berm on the left bank. Some bypassing on left bank in highest floods. A three-arched bridge is present 0.8km downstream. Two ratings applied across period of record due to shifting natural control and changing channel geometry in downstream reach.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Steep, very wet, responsive, upland catchment on open moor, draining peat covered Dartmoor Granite moorland. Natural catchment. The whole river length consists of a series of rapids & short pools formed by natural or semi-natural boulder weirs & falls. The channel is large enough to contain most floods. Land use is moorland in the upper catchment and low grade agriculture and woodland in the lower. No major catchment changes.	Runoff natural to within 10% at Q95.
46006	Erme at Ermington	43.5	SX6415853219	264158.0	53219.0	50°21'47.3600"N 3°54'40.4865"W	50.36316	-3.91125	Erme	Ermington	7.9	EA-DC	SX65F051	46	1973-01-01		FV+VA	50.0		16.6	true	true	true	true	false	false	false	true	false	false	false	false	false	PEI	1973-12-31	2023-09-30	1.985	0.081	1976-08-24	1976-08-24	32.3	2000-12-31	2000-12-31	0.279	0.656	1.1	4.67	6.626	0.47	18171	18171	100.0	1973-12-31		47.09	10.9	63.4	288.6	451.9	484.0	1722	1714	0.0825	0.0516	0.5561	0.2432	0.0662	0.0863	0.1054	0.4597	0.2946	0.0538			1.0		0.082	0.0427	0.1351	0.47	0.472	0.995	100.7	38.29	58.3	76.8	13.5	20.93	10.67	272	207	0.28	10.9	43.62	0.454	0.921	0.0351	0.0169	0.546	0.419	0.0316	0.813	0.42	1973		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway and Flat V control.	Velocity area station with low level Flat V control. Control is approximately 9.4m wide and unchanged. Station is located a few hundred metres east of the village of Ermington.	Stony river bed. Cableway present. Good station, minimal bypassing and well rated with reasonable fit to available gaugings. Recent investigations suggest backing-up when high flow coincides with high tide. Mutliple peak flow ratings accross period of record.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9). Rating reviewed in 2022 and data reprocessed for the full period of record.	Narrow, linear, north-south trending catchment draining southern flank of Dartmoor Granite. Headwaters in plateau-like moorland; main river section in steep, deeply incised valley with short tributaries. Off granite, Devonian Slates widely blanketed with river gravel and alluvium. Responsive catchment. Land-use is moorland in the upper catchment and predominantly low-grade agriculture elsewhere. Catchment includes town of Ivybridge. No major catchment changes.	Significant flow modifications by abstractions and diversions for public water supply and sewage effluent returns from Ivybridge.
46007	West Dart at Dunnabridge	47.9	SX6434374197	264343.0	74197.0	50°33'06.2995"N 3°54'58.5107"W	50.55175	-3.91625	West Dart	Dunnabridge	283.8	EA-DC	SX67F052	46	1972-01-01		VA	69.0			true	true	true	true	false	false	false	true	false	false	false	false	false	P	1972-11-30	2023-09-30	2.677	0.143	1976-08-23	1976-08-24	53.1	1979-12-27	1979-12-27	0.418	0.914	1.43	6.103	9.09	0.44	18567	15298	82.393	1972-11-30		71.101	283.8	340.5	421.6	514.0	564.3	1890	1987	0.0778	0.0243	0.5979	0.2782	0.0201	0.0415	0.0014	0.6297	0.3206	0.0068			1.0			0.3016		0.47	0.367	1.0	86.5	47.75	66.2	87.8	14.2	14.36	7.8	424	143	0.23	283.8	47.49	0.637	0.846	0.0489	0.0022			0.0033			1981..1989		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Informal Flat V low flow control between stone batter wing walls.	13.5m wide flat V informal low flow control. Originally built in 1972 but crest raised 0.1m in 1976. Cableway span 30m. In straight reach between two right hand bends.	Frequent (minor) out of bank flow on left hand bank above 1.3m. Significant bypassing on right hand bank above 2.1m. Multiple peak flow ratings across period of record.	Closed between 1981 and 1990. Gap between 20/07/1990 and 18/09/1990. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Responsive, upland catchment of subdued relief, high on Dartmoor Granite plateau. Land use is low grade agriculture, peat moorland. No major catchment changes.	Upper part of catchment affected by interception from Devonport and Prison leats that feed Burrator Reservoir. Runoff reduced by public water supply abstraction.
46008	Avon at Loddiswell	102.3	SX7187947584	271879.0	47584.0	50°18'51.2520"N 3°48'03.0002"W	50.31424	-3.80083	Avon	Loddiswell	5.9	EA-DC	SX74F051	46	1971-01-01		FV+VA	67.0			true	true	true	true	false	false	false	true	false	false	false	false	false	SR	1971-02-28	2023-09-30	3.721	0.158	1976-09-09	1976-09-09	57.0	2012-12-22	2012-12-22	0.496	1.17	2.14	8.887	12.0	0.5	19208	16055	83.585	1971-02-28		63.45	6.0	81.8	148.8	427.4	514.2	1605	1550	0.1035	0.154	0.6156	0.0943	0.0301	0.1188	0.2772	0.4926	0.1001	0.0095			1.0		0.0161	0.069	0.0942	0.47	0.554	0.986	124.0	32.89	53.4	70.7	12.9	32.91	15.75	202	154	0.17	6.0	102.22	0.511	0.942	0.0299	0.0035			0.0063	0.702	0.858	1970..1989		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with natural control to 2013, weir thereafter.	Velocity area station built in 1971. Natural control until Flat V weir built in 2012/13.	Cableway present, span 25.5m. Minimal bypassing. Pre-weir low flows were affected by weed growth and movement of the natural bed control (downstream of station) causing frequent re-rating. Reasonable fit to available gaugings.	Station closed between 6/10/1981 - 11/05/1990. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Drains southwards from Dartmoor Granite. Predominantly Lower Old Red Sandstone in lower reaches, Culm Measures between. Alluvium in valley bottom. Land-use: rural, grazing and woodland in steeply incised valley. No major catchment changes.	Some regulation from surface water and groundwater abstractions. Avon Dam in the catchment (small reservoir in the headwaters) can affect runoff. Dam fills quickly and overspills during significant events, but would make no difference to the flow at Loddiswell. HEP scheme was installed at the Dam (in 2012), on the falling limb of events, flows can suddenly drop to 'natural' when the reservoir stops releasing.
46013	Bovey at Bovey Parke	86.95	SX8098778672	280987.0	78672.0	50°35'44.1761"N 3°40'58.2949"W	50.5956	-3.68286	Bovey	Bovey Parke	30.1	EA-DC	SX87U053	46	2004-11		US				true	true	true	true	false	false	false	true	false	false	false	false	false		2004-11-19	2023-09-30	2.585	0.17	2022-08-14	2022-08-14	32.8	2013-12-23	2013-12-23	0.376	0.95	1.7	5.885	7.84	0.65	6890	6890	100.0	2005-11-01		25.9	30.1	130.0	264.7	386.0	505.8	1357	1356	0.317	0.0706	0.5487	0.043	0.0185	0.3094	0.1294	0.4764	0.0787	0.006		0.001	0.999			0.0325	0.1367	0.46	0.681	0.997	141.7	13.8	53.7	72.8	12.9	21.91	10.74	261	74	0.11	30.4	86.95	0.211	0.881	0.0219	0.001			0.0035					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station immediately upstream of a single-span bridge.	Ultrasonic station immediately upstream of a single-span bridge. Channel is 9m wide, reasonably straight approach with gentle bend in river downstream of bridge. Initially built for Water Resources as a replacement for Preston Gauging Station (46002) with a sister site at Chudleigh Bridge (46014), now a multi-functional site. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	A good stable site throughout the range. Some 'noise' on large peaks, but these are carefully edited as required.		Bulk of the river system rises on Dartmoor Granite moorland, and traverses a complex of Devonian and Carboniferous shales, sandstones and cherts before its wide alluvial valley crosses Tertiary sands and clays. Land use is low-grade agriculture and woodland.
46014	Teign at Chudleigh	232.28	SX8572278513	285722.0	78513.0	50°35'42.4405"N 3°36'57.3850"W	50.59512	-3.61594	Teign	Chudleigh	15.5	EA-DC	SX87U052	46	2004-02		US				true	true	true	true	false	false	false	true	false	false	false	false	false		2004-02-17	2023-09-30	5.547	0.395	2022-08-14	2022-08-14	99.37	2020-02-15	2020-02-15	0.637	1.58	3.04	13.3	19.03	0.52	7166	7166	100.0	2004-10-01		86.97	15.5	94.2	207.3	413.9	601.5	1212	1228	0.2529	0.1782	0.4605	0.0725	0.032	0.2539	0.2611	0.4225	0.0545	0.0049		0.0229	0.9692	0.0079	0.0056	0.0691	0.0292	0.46	0.575	0.976	136.7	27.24	46.6	63.2	12.3	45.25	22.69	227	88	0.13	15.5	232.28	0.34	0.998	0.027	0.0013			0.005			2003		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station immediately upstream of a single-span road bridge.	Ultrasonic station immediately upstream of a single-span road bridge. Channel is 19m wide, good straight approach and exit. Initially built for Water Resources as a replacement for Preston Gauging Station (46002) with a sister site at Bovey Parke (46013), now a multifunctional site. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	The first floods of each autumn typically bring lots of debris (leaves) which can cause some problems with the velocity measurement. This is addressed in post-processing as required. The channel cross section is not stable (frequent shoaling). This is addressed by undertaking regular cross section surveys.		Bulk of the river system rises on Dartmoor Granite moorland, and traverses a complex of Devonian and Carboniferous shales, sandstones and cherts before its wide alluvial valley crosses Tertiary sands and clays. Land use is low-grade agriculture and woodland.	Four reservoirs and various water reclamation works have minor affect on low flow regime.
47001	Tamar at Gunnislake	916.9	SX4262772524	242627.0	72524.0	50°31'52.5720"N 4°13'18.6748"W	50.53127	-4.22185	Tamar	Gunnislake	8.2	EA-DC	SX47F051	47	1956-01-01		VA	550.0		7.1	true	true	true	true	false	true	false	true	true	true	true	true	true	SRPEI	1956-06-25	2023-09-30	22.918	0.58	1976-08-23	1976-08-23	484.0	1979-12-27	1979-12-27	2.27	6.029	11.8	57.4	82.0	0.46	24569	24569	100.0	1956-06-26		264.0	9.1	91.5	144.9	231.4	580.3	1240	1215	0.1146	0.2162	0.6332	0.005	0.0258	0.1142	0.3603	0.5012	0.0125	0.0079			1.0		0.0218	0.0007	0.074	0.49	0.481	0.993	86.4	37.0	40.1	52.7	12.2	74.18	40.47	155	218	0.03	9.2	920.22	0.598	0.96	0.044	0.0034			0.0047			1955		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with a wide shallow channel and rocky bed.	Velocity area station with a wide, shallow channel and rocky bed. Cableway span is 46.9m. New cableway in 1999. Informal Flat V low flow level bed control installed in 1989. Access problem at high flows.	Low flow check gaugings undertaken at narrower site. Shifts in rating pre-1989 due to changes in natural bed control. Good range of gaugings, reliable rating especially since 1991. Construction of Roadford Reservoir on the River Wolf may have significant effect on low flows from 1989. Multiple peak flow ratings applied across period of record. Ratings fit well to corresponding gaugings.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in August 2024 (WINFAP Files v13).	A fairly responsive rural catchment of moderate relief, draining very disturbed Lower Carboniferous slates, shales, grits and volcanics. Significant alluvial flats in middle reaches, Devonian slates lower down. Land use is a range of agriculture, grazing and forestry. Construction of Roadford Reservoir on the River Wolf in 1988.	Roadford Reservoir from 1989 may have significant effect at low flows. Abstraction for public water supply and industrial/agricultural uses. Some effluent returns. Regulation from surface water and/or groundwater.
47002	Tamar at Werrington	232.1	SX3429888604	234298.0	88604.0	50°40'24.4306"N 4°20'47.2231"W	50.67345	-4.34645	Tamar	Werrington	57.0	EA-DC		47	1956-01-01	1961-12-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1956-10-01	1961-09-30	5.837	0.011	1959-10-03	1959-10-05	137.9	1960-12-04	1960-12-04	0.116	1.048	2.792	14.47	21.15	0.34	1826	1826	100.0				57.2	97.9	131.2	173.6	225.6	1165	1146	0.1028	0.2464	0.6261	0.0005	0.0217	0.1087	0.4278	0.4465	0.0082	0.0068			1.0		0.0074		0.058	0.5	0.396	0.981	66.2	40.94	37.4	48.1	12.2	42.28	20.94	133	200	0.1	57.2	234.78	0.613	0.936	0.0513	0.0024			0.0032					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station closed in 1961.	Velocity area station closed in 1961.			Rural catchment of moderate relief. Land uses are a range of agriculture, gazing and forestry.
47003	Tavy at Lopwell	205.9	SX4749865034	247498.0	65034.0	50°27'54.9029"N 4°09'00.4257"W	50.46525	-4.15012	Tavy	Lopwell	2.7	EA-DC		47	1956-01-01	1980-04-01	MIS		207.0		true	false	false	false	false	false	false	false	false	false	false	false	false	PGEIH	1957-10-01	1980-03-31	5.799	0.06	1976-08-23	1976-08-23	84.95	1959-01-17	1959-01-17	0.519	1.536	3.398	13.71	18.76	0.46	8218	2528	30.762				8.3	107.0	222.2	486.3	601.1	1549	1544	0.1137	0.0647	0.6443	0.1393	0.0354	0.0916	0.1389	0.6127	0.1378	0.0183			1.0		0.0048	0.1225	0.0654	0.48	0.554	0.999	106.3	30.94	50.5	66.4	12.8	37.63	21.36	262	236	0.26	8.3	206.43	0.598	0.932	0.0313	0.0114	0.695	0.706	0.0121	0.767	0.737			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station at the estuary of the River Tavy with a fish pass and intake for hydroelectricity generation.		Compound broad-crested weir 75m wide with fish pass and intake for hydroelectricity generation; outlet of Lopwell Dam, which acts at tidal barrage. Over-topping only during very exceptional floods.	Gauged daily flows missing October 1959 - July 1974 and August 76. Data patchy in 1979 and up to station closure in 1980.		Variety of artificial influences upstream.
47004	Lynher at Pillaton Mill	135.5	SX3684962571	236849.0	62571.0	50°26'24.9029"N 4°17'56.2755"W	50.44025	-4.29897	Lynher	Pillaton Mill	8.5	EA-DC	SX36F069	47	1961-01-01		VA	67.0		13.8	true	true	true	true	false	false	false	true	false	true	false	false	true	P	1963-10-01	2023-09-30	4.521	0.21	1976-08-27	1976-08-27	75.91	2020-12-18	2020-12-18	0.642	1.538	2.711	10.94	15.16	0.59	21915	21915	100.0	1961-05-10		46.05	9.1	79.0	160.1	292.6	383.0	1498	1423	0.1417	0.1962	0.608	0.0198	0.0328	0.1462	0.3086	0.5137	0.0186	0.0127			1.0			0.0414	0.0884	0.48	0.549	0.996	107.1	33.77	45.5	61.0	12.4	35.22	18.02	175	130	0.08	9.1	135.29	0.457	0.987	0.0339	0.008	0.597	0.759	0.008	0.744	0.73	1961..1964	1962-09-01..1965-10-01	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway.	Velocity area station, channel approx. 10.6m wide, cableway span 16.9m. Downstream shoal as control.	Flows at site were formerly contained by flood banks on both banks (bankfull level only thought to have been exceeded once in record (12/1979)). However the left hand bank was breached in the 1990s and the left hand entrainment bank then removed so bypassing occurs more readily since 1990; floodplain flows are ungauged. Multiple peak flow ratings across period of record. Generally reasonable rating, well gauged through the range but limited confidence in upper range. Rating shift due to mobile bed and control. Rating reviewed in 2012 with improvements applied to historic record. Out-of-bank flows now calculated using model-derived rating. Low flow rating shifts regularly in response to changes in the downstream shoal. Analysis has shown that the high flow rating is similar through the record due to influence of downstream control at higher levels. Rating formed from a combination of high flow gaugings, 2D hydraulic modelling and observations of the 1979 flood (wrack marks and slope-area analysis). Separate high flow ratings prepared for the situation pre- and post-1990 with the left hand bank in place and removed. As a result rating now considered sound. Acoustic Doppler installed in 02/12 to confirm the rating at higher levels.	Data pre-March 1966 are rejected as they have not been re-rated and are therefore uncertain - there also appears to be some truncation. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Headwaters rise on Bodmin peat covered granite moorland; thence Devonian slates and volcanics; middle reach crosses a Carboniferous shale and sandstone inlier. Drift restricted to alluvium. Responsive upper catchment on Bodmin Moor. Generally low grade land gives rise to a variety of agriculture, grazing and forestry. No major catchment changes.	Imports from Sibleyback Reservoir exceed direct PWS abstraction, moderate net affect at low flows.
47005	Ottery at Werrington Park	120.7	SX3372186613	233721.0	86613.0	50°39'19.4359"N 4°21'13.3718"W	50.6554	-4.35371	Ottery	Werrington Park	54.7	EA-DC	SX38F073	47	1963-01-01		VA			13.5	true	true	true	true	false	false	false	true	false	false	false	false	false	GE	1963-10-01	2023-09-30	2.967	0.001	1995-08-22	1995-08-22	82.79	1979-12-27	1979-12-27	0.153	0.607	1.319	7.57	11.45	0.41	21915	18191	83.007	1961-05-01		61.177	55.8	99.8	139.4	216.8	293.5	1204	1199	0.0642	0.2688	0.6358	0.0002	0.0273	0.0616	0.4268	0.4981	0.01	0.0035			1.0		0.0479		0.0846	0.49	0.45	0.999	71.2	38.95	39.0	53.8	12.2	29.25	16.34	148	76	0.13	56.0	121.66	0.558	0.796	0.0465	0.0027			0.0051	0.654	0.747	1960..1984	1961-02-03..1978-11-13	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal Flat V low flow control with good straight approach.	Velocity area station with informal Flat V low flow wooden control 16.9m wide (surveyed in 2005). Good straight approach. 36.5m span cableway extends over flood banks.	Insensitive at low flows given wide section. Reaches bankfull on left bank in larger floods and then bypassed on right bank. Rating developed using gaugings, to be reviewed due to bias and gauging deviation. Peak event flow December 1979 estimated at 3.234m using Mannings following wrack mark survey and used as a gauging in derivation of peak flow rating. Two peak flow ratings across period of record.	Station closed from 1981 to 1985, no data available. Data suspect pre-1972, historical evidence suggests levels backed up so flows over-estimated and peak flows are rejected for this period. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Responsive, predominantly natural catchment of moderate relief draining eastwards from coastal hills and drains upland north of Bodmin Moor. Geology mainly comprises of Devonian shales and grits and Carboniferous Culm Measures. Land use is rural, grazing and low grade agriculture with minor forestry.	Sensibly natural although runoff influenced by gw abstraction/recharge and some effluent returns. No major changes to catchment.
47006	Lyd at Lifton Park	222.9	SX3889684249	238896.0	84249.0	50°38'08.2033"N 4°16'46.3358"W	50.63561	-4.27954	Lyd	Lifton Park	47.8	EA-DC	SX38F072	47	1975-01-01		FLVA	176.0		11.4	true	true	true	true	false	false	false	true	false	false	false	false	false	SGEI	1963-10-01	2023-09-30	5.206	0.135	1976-08-27	1976-08-27	128.0	1979-12-27	1979-12-27	0.677	1.645	2.84	12.48	17.3	0.51	21915	19215	87.68	1962-08-01		81.909	50.4	105.7	175.3	272.1	580.3	1299	1228	0.1496	0.1435	0.6574	0.0169	0.0195	0.1409	0.2904	0.5301	0.0208	0.0042			1.0		0.0331	0.0029	0.0549	0.5	0.485	0.996	104.8	36.3	41.6	53.7	12.3	24.84	13.84	187	269	0.19	50.4	220.39	0.449	0.785	0.035	0.0002			0.0018			1961..1987		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Shallow rectangular concrete flume installed in 1968 to replace previous velocity-area section.	Originally a velocity area station, superseded in 1968 by a shallow, rectangular, concrete flume to overcome low-flow measurement problems. Flume has side and bed contractions, throat 3.5m wide, 0.38 m deep, and is flanked by broad crested weirs in 7.9 m wide channel. Wooden structure added to central channel to aid fish movement. Gentle approach bend. Cableway 5 m upstream of present position prior to 1977. Flood Studies Report grade C.	Largest floods may exceed bankfull and bypass station. Peak flows of 1979 and 2000 thought to have been contained. Upper limb extended to out-of-bank flows using modelling. Flume installation in 10/1968 necessitated a rating change. Latest rating based on all gaugings and hydraulic modelled upper limb for out of bank flows. Reviewed and re-rated in 2019. Segment 1 to top of flume, segment 2 to bankfull and segment 3 OOB modelled flow. High flow gaugings are difficult so an Acoustic Doppler acts as a high flow gauging tool to assist flow estimation.	Station closed 1981-88. 15% of the catchment now drains through Roadford Reservoir (since 1988), though runoff from Dartmoor to the east may be more significant. New medium and high daily flow rating developed in 2007 including high flow gaugings and applied to flows back to 1975. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Moderate to high relief catchment draining Carboniferous Culm Measures (shales and sandstones). Land-use is wholly rural; moorland headwaters, forestry in main valleys, rough grazing, low grade agriculture. Roadford Reservoir, completed in 1989, with a catchment area of 31.8km2, affects 14.5% of catchment. FARL in catchment descriptor file (.cd2) given for pre-reservoir condition. FARL post-reservoir = 0.95.	Flows significantly affected by operation of Roadford Reservoir (post-1988). Runoff influenced by groundwater abstraction/recharge and increased by effluent returns.
47007	Yealm at Puslinch	54.9	SX5741651110	257416.0	51110.0	50°20'33.3758"N 4°00'18.6385"W	50.3426	-4.00518	Yealm	Puslinch	5.5	EA-DC	SX55F055	47	1963-10-01		FV	26.0		18.9	true	true	false	true	false	false	false	true	false	false	false	false	false	PI	1963-10-01	2023-09-30	1.751	0.032	1976-08-23	1976-08-26	31.0	1981-03-10	1981-03-10	0.247	0.638	1.11	3.95	5.373	0.56	21915	21481	98.02	1962-05-01		40.245	6.4	52.9	124.9	374.8	491.9	1482	1427	0.1291	0.1388	0.573	0.052	0.0612	0.1313	0.2558	0.4927	0.0947	0.0234			0.9999		0.0369		0.1013	0.47	0.549	0.987	104.3	33.26	48.1	63.2	12.5	19.13	10.42	169	196	0.28	6.4	56.91	0.407	0.728	0.0321	0.0117	0.593	0.52	0.0171	0.723	0.603	1961		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir installed 2002, with crest tapping and downstream level measurement to calculate drowned flows.	Flat V weir installed 2002, with crest tapping and downstream level measurement to calculate drowned flows. Modular at 0.82m. Prior to 2001 station consisted of a low flow rectangular flume, 4.7m throat width, side and bottom contractions, this, in turn, superseded a velocity-area station in 07/1967.	Bankfull approx. mean annual flood level; downstream bridge truncates peaks. Prior to 2000 station was bypassed. Entrainment banks rebuilt in 2001 at higher level than previous, as have overtopped in the past. Previous banks overtopped more frequently but overtopped during 2012 flood events. POR maximum flow of 46.2 cumecs in 12/2000 is an estimate provided by the EA, which is thought to be reasonable. Good rating, well-gauged across the flow range. Lower end re-rated in 2011 and earlier flows recalculated. No liability to backwater or tidal influence. New rating prepared in 2013 for weir period using observations of overtopping of flood banks (> 2.125m) during July, Nov, Dec and 2012 floods. Peak flow ratings cover: the period pre-1967 before the flume was operational, the period when flume was operational (1967-2001) and the period since 2002 when the flat V was built. Acoustic Doppler installed in 08/2014 to improve high flows.	Closed from 09/2001 to 11/2002 for installation of new weir. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	South Dartmoor catchment with rapid response. Headwaters drain Dartmoor Granite and metamorphosed Devonian slates. Most of catchment underlain by Devonian shales and tuffs with subordinate limestone. Land use is meadowland, arable and low grade agriculture. No major catchment changes.	Moderate influence from public water supply and industrial/agricultural abstractions and imports.
47008	Thrushel at Tinhay	112.7	SX3978385516	239783.0	85516.0	50°38'50.0698"N 4°16'03.1918"W	50.64724	-4.26755	Thrushel	Tinhay	55.5	EA-DC	SX38F071	47	1969-01-01		CC	139.9	145.0	32.5	true	true	true	true	false	false	false	true	false	false	false	false	false	SH	1969-09-30	2023-09-30	2.305	0.009	1976-08-22	1976-08-22	65.0	1979-12-27	1979-12-27	0.167	0.675	1.17	5.64	8.13	0.44	19724	19724	100.0	1969-10-01		39.95	56.3	103.9	160.1	226.6	340.5	1228	1144	0.1461	0.1531	0.6566	0.0002	0.0189	0.1345	0.3334	0.4989	0.0034	0.0039			1.0		0.053		0.0612	0.5	0.422	0.999	89.5	39.11	38.5	49.1	12.0	21.99	11.59	162	225	0.17	56.3	112.72	0.448	0.803	0.0363	0.0			0.001					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three-bay compound Crump weir with flows since 1988 influenced by the construction of Roadford Reservoir.	Three-bay compound Crump profile weir with crests of 3.66m, 10.97m (total) length. A second pre-weir was constructed at the end of 2017 to improve fish passage and a passive eel pass installed within the outer weir face on the right hand bank.	Weir assumed to be modular to structure full (2.74m) but this is unverified and downstream levels may back up and influence levels. This is increasingly likley since the construction of the additional pre-weir in 2017 and a downstream level has been installed to evidence/analyse this. All flows contained to date (2020). One peak flow rating has been applied across period of record. Rating fits to gaugings reasonably well but will be reviewed when enough data is available to confirm if drowning is an issue.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Previously natural catchment of moderate relief draining shales and sandstones of Carboniferous Culm Measures. Significant terrace gravels lower down in main valley. Land use is rural, grazing, mixed farming and low grade agriculture. Roadford Reservoir, completed in 1989, with a catchment area of 31.8km2, affects 28.3% of catchment. FARL given for use in WINFAP is for pre-reservoir condition.	Low flows significantly affected after 1988 by Roadford Reservoir (storage, pumped water transfers and HEP).
47009	Tiddy at Tideford	37.2	SX3446859634	234468.0	59634.0	50°24'47.4941"N 4°19'52.2128"W	50.41319	-4.33117	Tiddy	Tideford	4.2	EA-DC	SX35F068	47	1969-01-01		C	48.9	50.0	29.2	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1969-10-11	2023-09-30	1.004	0.063	1976-08-26	1976-08-27	12.8	2012-12-22	2012-12-22	0.129	0.301	0.6	2.49	3.39	0.57	19713	19713	100.0	1969-10-01		6.89	5.7	52.0	108.3	168.3	283.5	1348	1276	0.0965	0.3484	0.5063		0.0468	0.0891	0.5039	0.3924	0.002	0.0122			1.0					0.48	0.591	1.0	121.2	30.81	41.7	55.2	11.8	15.76	8.25	109	150	0.2	6.1	37.4	0.31	0.697	0.0237	0.0074	0.552	1.564	0.0107	0.725	1.36			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir opened in 1969.	Station opened in 1969 with a Crump profile weir, 5.5 m wide and wing walls 2.3m high with subsidiary floodbanks.	Weir fully modular when flow within flood banks. High flows gauged at road bridge. No bypassing. Rated by gaugings below 0.1m stage, theoretical rating above this. Few gaugings at low flows. Good site and record. All flows contained to date but analysis of tailwater levels post November 2012 flood (biggest on record) showed weir non-modular during event. High flows gauged off road bridge in the past and with ADCP on ropes now. Ratings based on theoretical Crump weir equation. Adjustment for drowning has been applied to the top end based on the findings of the December 2012 event. Extrapolation beyond max gauging at 6.5 m3/s reasonable as flows contained and drowning considered. Two peak flow ratings across period of record.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Elongated, linear, natural catchment. Headwaters rise from southernmost outcrop of Bodmin granite. Great bulk of the catchment on Devonian shales and slates interspersed with tuffs and lavas. Moderate relief. Land use is agricultural, dairy and mixed farming rough grazing. Some forestry. No major changes to catchment.	Natural to within 10% at Q95.
47010	Tamar at Crowford Bridge	76.7	SX2900699099	229006.0	99099.0	50°45'58.3746"N 4°25'34.1122"W	50.76622	-4.42614	Tamar	Crowford Bridge	84.0	EA-DC	SX29F067	47	1972-01-01		CC	66.0	56.0	26.2	true	true	false	true	false	false	false	true	false	false	false	false	false	SRP	1972-06-20	2023-09-30	1.72	0.006	1975-08-03	1975-08-04	37.3	2012-12-22	2012-12-22	0.094	0.313	0.741	4.64	6.61	0.38	18730	18730	100.0	1972-06-21		28.839	84.5	109.1	140.0	191.3	225.6	1202	1181	0.0757	0.2294	0.6681	0.0004	0.0219	0.0704	0.4293	0.4762	0.0131	0.0055			1.0		0.0109		0.0542	0.5	0.386	0.947	53.1	41.61	37.8	49.1	12.4	25.87	14.37	145	192	0.16	84.5	77.77	0.698	0.764	0.0636	0.0038			0.0016			1971		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir.	Compound Crump profile weir, total crest length 11m.	Piers submerge around 1.65m. Drowning occurs when stage > 0.6m, but non-modular flows can be gauged from the footbridge. Evidence of hysteresis in rating due to the size of the downstream flood plain. One peak flow rating applied across period of record. Above piers (>1.65m), theoretical within pier rating extrapolated. Transit time of flight installed in 10/2013 and used to apply a new high flow limb for the POR in 2015.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	River drains coastal hills of West Cornwall; relief is quite subdued, and rocks outcropping are shales and sandstones of Carboniferous Culm Measures. Land use is wholly rural with some artificially induced vegetation, moorland and low-grade agriculture. Impoundment of the Tamar Lakes.	Unusual flood response, not indicative of upper Tamar conditions. Flows substantially modified by the impoundment of the Tamar Lakes 15km u/s. Runoff also reduced by public water supply abstraction.
47011	Plym at Carn Wood	79.2	SX5214161175	252141.0	61175.0	50°25'54.3339"N 4°04'59.5946"W	50.43176	-4.08322	Plym	Carn Wood	15.5	EA-DC	SX56F056	47	1971-01-01		CC		48.0	12.0	true	true	false	true	false	false	false	true	false	false	false	false	false	SRPGEI	1971-05-31	2023-09-30	2.632	0.121	1976-08-27	1976-08-27	56.5	1979-12-27	1979-12-27	0.365	0.842	1.39	6.238	8.827	0.49	19116	12343	64.569	1971-06-01		47.53	16.1	134.9	279.4	428.3	506.7	1588	1617	0.1522	0.0458	0.5961	0.1448	0.0252	0.1377	0.0753	0.6279	0.1413	0.0089			1.0		0.0243		0.0702	0.48	0.481	0.95	104.0	38.28	54.0	68.0	13.3	20.56	11.67	277	249	0.29	16.1	79.5	0.389	0.873	0.0282	0.0076	0.502	0.724	0.0067	0.67	0.683	1970..1999		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir built in 1971.	Compound crump weir built in 1971. Centre crest of 3.5m and 2 flank crests of 4.5m. Total crest width 12.5m.	Modular to around 1.6m, drowning occurs at high flows. One peak flow rating across period of record. Theoretical rating does not apply beyond top of wingwalls are they are very rarely overtopped and by very little. Only bypassed on largest floods of 1979 and 2000. Tailwater recorder added 09/2007. At one time received diversions from the Dart via the Devonport Leat (~0.21 cumec), but this has now ceased. Flows from 2000 (reopening) onward reprocessed in 2007 following datum correction. Rating appears to underestimate flows beyond 0.8m. An Acoustic Doppler device installed in 09/2014 to confirm flows above 0.8m and identify the point and extent of drowning.	Station closed between 01/10/1981-17/04/2000. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The headwaters of Plym and Meavy rise on W Dartmoor granite downstream of Burrator Reservoir and pass SW onto Upper Devonian slates. Insignificant areas of alluvium and river gravel exist, most particularly between the gauging station and the Meavy-Plym confluence. Moorland catchment with forestry. No major changes apart from afforestation.	Burrator Reservoir influences flows. The headwaters of Plym and Meavy rise on W Dartmoor granite and pass SW onto Upper Devonian slates. Insignificant areas of alluvium and river gravel exist, particularly between gauging station and Meavy-Plym confluence. Land use is moorland, forestry.
47013	Withey Brook at Bastreet	16.2	SX2441676393	224416.0	76393.0	50°33'39.0467"N 4°28'49.3980"W	50.56085	-4.48039	Withey Brook	Bastreet	228.7	EA-DC	SX27F066	47	1972-01-01		CC	8.4	8.7	11.0	true	true	false	true	false	false	false	true	false	false	false	false	false	P	1972-12-09	2023-09-30	0.561	0.022	2018-07-26	2018-07-26	7.627	2008-07-09	2008-07-09	0.081	0.187	0.361	1.247	1.698	0.57	18558	18558	100.0	1972-12-10		9.806	229.5	246.2	287.9	332.4	383.0	1777	1686	0.2664	0.0224	0.5955	0.0901	0.0256	0.2332	0.0737	0.5995	0.0934	0.0001			1.0			0.3617	0.0003	0.48	0.368	0.998	82.2	49.11	48.8	66.8	13.0	6.85	3.66	288	300	0.03	229.5	13.95	0.664	0.667	0.0619	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three-bay compound Crump profile weir with associated climate station and footbridge.	Three-bay compound Crump profile weir, crest lengths 0.91m and 2.54m (total). Crest replaced 03/2000. Affected by subsidence post-1990 (unquantified). Associated climate station. Footbridge over the weir. Residual flow gauge for associated major public water supply abstraction.	Downstream weed growth and siltation affects low flows. Poor site for high flows: only possible to gauge up to pier height, which is lower than the mean annual flood. ToF ultrasonic added for medium and high flows but this has also proved problematic. Bypassed on right bank when out-of-bank. Two peak flow ratings across period of record, RC3 covers the complete period of record, except for a period in 2017/18 when weir became non modular throughout range due to backing up caused by downstream channel conditions (RC4).	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The small catchment drains eastwards from Bodmin Moor and northwards from Craddock Moorland. Catchment of moderate relief, entirely upon the granite of Bodmin Moor, with three main tributaries flowing in distinct valleys. Land cover is widespread peat; main valley broad and marshy. Nearly a quarter of the catchment is forested. It is virtually uninhabited. No major changes apart from afforestation.	Runoff reduced by major public water supply abstraction. Occasional substantial diversions into the catchment from Sibleyback Reservoir.
47014	Walkham at Horrabridge	44.6	SX5131269888	251312.0	69888.0	50°30'35.4740"N 4°05'54.0589"W	50.50985	-4.09835	Walkham	Horrabridge	82.3	EA-DC	SX56F057	47	1976-01-01		MIS	46.0	40.0	35.7	true	true	true	true	false	false	false	true	false	false	false	false	false	PI	1976-05-19	2023-09-30	1.933	0.128	1989-08-07	1989-08-07	38.63	2020-12-18	2020-12-18	0.37	0.78	1.26	4.1	5.618	0.57	17301	17125	98.983	1974-04-18		44.282	81.2	158.7	326.1	489.9	551.0	1665	1665	0.1169	0.0382	0.6727	0.1478	0.0192	0.0886	0.068	0.6799	0.1554	0.0082			1.0		0.0017	0.0692	0.1144	0.48	0.585	1.0	109.0	26.16	54.7	70.2	13.2	17.61	7.7	318	245	0.34	81.6	44.24	0.319	0.878	0.0226	0.0107	0.6	0.329	0.0078	0.704	0.256	1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three bay non-standard structure consisting of Flat V, triangular profile and broad-crested weirs.	Three-bay non-standard compound structure with 2.47m flat V weir (on fish pass), 9.48m wide triangular profile weir and a 8.53m wide broad-crested weir. Flat V weir on fish pass superseded a previous sharp crested weir in 1976.	During low flows, the left hand broad crested weir in the flood relief channel (gently sloping open grassed space) is dry - beyond 1.4m the flows bypass the structure and enter the channel. Allowance for bypass flow made based on contemporary observations of 1979 flood (including survey and Manning calculations), which suggested a flow range between 90 and 112m3/s. Multiple ratings across period of record, using check gaugings (some collected by ADCP) and extrapolated above.	No data between 07/2014 and 12/2014 due to fish pass improvement works. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Moorland catchment draining western Dartmoor Granite. Steep, afforested valley flanks as the river leaves the granite and drains Devonian slates, limestone and volcanics. Land use is low grade agriculture, moorland and woodland. No major catchment changes.	Moderate flow modification by PWS abstraction and minor agricultural abstraction.
47015	Tavy at Ludbrook	197.3	SX4761368174	247613.0	68174.0	50°29'36.5963"N 4°08'59.2059"W	50.4935	-4.14978	Tavy	Ludbrook	10.0	EA-DC	SX46F003	47	1976-01-01		MIS	188.8		12.0	true	true	false	true	false	false	false	true	false	true	true	false	true	N	1976-01-01	2023-09-30	7.064	0.441	1976-08-21	1976-08-21	182.0	1979-12-27	1979-12-27	0.962	2.21	3.77	17.27	23.0	0.48	17440	17365	99.57	1981-11-16		158.638	14.2	117.0	231.3	488.6	601.1	1559	1555	0.1044	0.0602	0.6527	0.1452	0.0352	0.0819	0.1312	0.6248	0.1434	0.0184			1.0		0.005	0.1276	0.06	0.48	0.553	0.999	104.9	30.89	50.8	66.9	12.8	32.64	17.13	270	237	0.27	14.2	198.05	0.547	0.981	0.0295	0.0113	0.701	0.618	0.0123	0.77	0.643	1981..2010	1981-10-01..2011-10-01	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Unconventional structure comprising a flume set within shallow wing walls which curve through 90 degrees.	Unconventional control opened in 1981 comprising a flume set within shallow (0.3m) wing walls which curve through 90 deg. W to fill the whole channel (20m). Cableway spans 32m.	Well contained but highest flows out-of-bank. Greater uncertainty at higher flows due to lack of gaugings. Additional gaugings are available for the site prior to installation of the flume. Two peak flow ratings across period of record; not confirmed for out-of-bank flow and theoretical rating extrapolated beyond 1.5m.	Peak flows rejected from 1981-2011 as stilling well issues causing significant under-recording of peak river levels.	A responsive catchment draining from the western flank of the Dartmoor Granite plateau; valleys are steeply incised and forested below Tavistock. Land cover is moorland, rough grazing and low-grade agriculture. No major catchment changes.	Low flows dominated by abstractions for hydropower station and public water supply for Plymouth and the Morwellham canal.
47016	Lumburn at Lumburn Bridge	20.5	SX4596873115	245968.0	73115.0	50°32'14.8949"N 4°10'29.9794"W	50.53747	-4.17499	Lumburn	Lumburn Bridge	67.0	EA-DC		47	1976-03-01	2002-03-28	VA	2.6		27.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1976-02-29	2002-03-28	0.536	0.032	2001-09-23	2001-09-23	8.908	1979-12-27	1979-12-27	0.07	0.192	0.339	1.255	1.657	0.63	9525	9416	98.856				67.9	106.6	157.4	235.0	293.6	1309	1284	0.0509	0.1185	0.8029		0.0265	0.0386	0.3161	0.6311	0.0079	0.0063			1.0					0.48	0.597	1.0	83.9	28.61	42.5	56.7	12.0	9.2	5.1	163	197	0.31	67.9	20.71	0.188	0.553	0.015	0.0037			0.0044					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station on the River Lunburn within the catchment of the River Tavy.	Velocity area station. Closed for health and safety reasons in March 2002.			Natural catchment with very flashy regime. Moderate relief rural catchment draining Carboniferous Culm Measures and Devonian Slate. Land uses are grazing and low grade agriculture.
47017	Wolf at Combe Park Farm	31.1	SX41898981	241890.0	89810.0	50°41'11.0506"N 4°14'22.6002"W	50.6864	-4.23961	Wolf	Combe Park Farm	89.0	EA-DC		47	1977-01-01	1986-12-31	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	SRP	1977-04-05	1986-12-31	0.734	0.0	1977-07-01	1983-09-02	22.62	1979-12-27	1979-12-27	0.014	0.135	0.354	1.794	2.664	0.38	3558	3558	100.0				88.7	127.1	184.5	230.2	280.5	1243	1146	0.1902	0.1357	0.5758	0.0004	0.0118	0.1954	0.2406	0.4691	0.004	0.0006			1.0					0.5	0.416	1.0	82.4	40.17	36.9	46.7	12.0	11.93	6.75	180	215	0.21	88.7	31.93	0.242	0.596	0.0184	0.0			0.0005					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station on the River Wolf upstream of the confluence with the River Thrushel within the catchment of the River Tamar.		Trapezoidal flume structure measuring flow from a natural catchment.	Zero flow in 08-1983. Station closed in 1987 after the construction of Roadford reservoir upstream.	A rural catchment of moderate relief, draining shales and sandstones of the Carboniferous Coal Measures. Land uses are grazing and low level agriculture.
47018	Thrushel at Hayne Bridge	57.6	SX4162586663	241625.0	86663.0	50°39'28.9885"N 4°14'31.2407"W	50.65805	-4.24201	Thrushel	Hayne Bridge	67.0	EA-DC	SX48F012	47	1988-01-01		VA	25.8		80.0	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1989-01-01	2023-09-30	1.369	0.0	1989-07-20	1989-09-10	27.1	2006-11-24	2006-11-24	0.048	0.252	0.578	3.583	5.291	0.38	12691	12691	100.0				68.0	108.3	164.5	237.2	340.5	1263	1163	0.1427	0.168	0.667		0.0219	0.1251	0.3612	0.5039	0.0039	0.0053			1.0		0.1034		0.0852	0.5	0.42	0.999	93.8	38.49	40.2	51.9	12.1	19.18	10.63	169	253	0.2	68.0	57.77	0.521	0.838	0.0434	0.0			0.0013					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Low level bed control in poor section on meandering stretch with accretion problems.	Low level bed control between 7m wide, high angle, trapezoidal gabion wing walls, in poor section on meandering stretch with accretion problems. Cableway extends over low lb.	Bypassed readily at high flows, well below bank-full. Low flows of limited quality, SL installed 2006 to improve low flows as weir is frequently drowned due to geomorphic changes to the ds channel. Rating from gaugings, does not account for bypassing. Gravel shoal downstream of the station. One rating applied across period of record.	Non-modular 01/02/2001-19/09/2002.	Moderate relief, natural catchment, responsive to rainfall. Drains west flank of Dartmoor; contains carboniferous Culm measures and Upper Devonian slates. Land use is rural, agriculture and woodland. No major catchment changes.	Natural, responsive flow regime.
47019	Tamar at Polson Bridge	470.3	SX3531284864	235312.0	84864.0	50°38'24.4889"N 4°19'49.6142"W	50.64014	-4.33045	Tamar	Polson Bridge	48.0	EA-DC	SX38F080	47	1987-01-01		VA	95.0		15.0	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1987-12-25	2023-09-30	10.91	0.212	2022-08-14	2022-08-14	161.0	1999-12-18	1999-12-18	0.61	2.11	4.59	29.0	42.8	0.39	13064	13064	100.0				49.0	94.7	136.4	187.5	293.5	1183	1167	0.0987	0.2453	0.6268	0.0003	0.0262	0.1019	0.408	0.4715	0.0084	0.0091			1.0		0.027		0.0668	0.5	0.428	0.989	71.2	39.62	38.1	50.0	12.2	46.92	20.9	139	151	0.04	49.1	471.81	0.592	0.885	0.0489	0.0039			0.0054	0.699	0.679			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	An informal Flat V control on the River Tamar upstream of the confluence with the River Lyd.		Informal Flat V control 18m wide between high angle trapezoidal gabion wing walls with a reasonably straight approach. Cableway just d/s of Kensey trib. Comes out of lb when Kensey in flood. Rating reasonable to bankfull, but requires low flow gaugings to confirm lower end (below 0.18m).		Moderate relief catchment with Carboniferous sandstones in headwaters and remainder Culm Measures (shales, limestones, grits). Essentially rural, low grade agriculture, some forestry.	Significant modification of flow due to Tamar Lake operations.
47020	Inny at Bealsmill	105.0	SX3591177075	235911.0	77075.0	50°34'13.1415"N 4°19'06.7458"W	50.57032	-4.31854	Inny	Bealsmill	43.0	EA-DC	SX37F070	47	1988-10-01		B				true	true	true	true	false	false	false	true	false	false	false	false	false		1976-05-12	2023-09-30	3.445	0.161	1976-08-24	1976-08-24	44.82	1979-12-27	1979-12-27	0.489	1.182	2.06	8.448	10.93	0.59	17308	14741	85.169	1976-05-13		34.475	41.0	126.1	198.8	282.8	364.1	1391	1429	0.0898	0.1803	0.6957	0.0033	0.0272	0.0726	0.267	0.6411	0.0131	0.0062			1.0				0.1334	0.47	0.576	1.0	89.7	34.0	44.9	61.5	12.6	32.05	18.06	201	90	0.16	41.0	101.98	0.476	0.938	0.0358	0.0034			0.004			1975		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad crested weir built in 1988 to replace previous velocity area station.	Velocity area station with a low flow bed control built in 1976. Station re-opened with broad-crested weir in 1988. Channel approximately 9.5m wide.	Bankfull at 1.8m. Station subject to mobile bed/shoaling downstream of weir so rating prone to shifting. Gaugings taken to allow preparation of ratings to account for this. Multiple peak flow ratings applied across period of record. Rating derived from current meter gaugings from cableway.	Station closed 01/01/1981 - 11/10/1988; no data available. Downstream siltation led to the drowning of the control structure during high flows in 12/1999. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Mixed geology, mostly Upper Devonian, Culm Measures, Carboniferous with some areas of slate and thin limestone. Land-use: rural, low intensity agriculture, beef/sheep and dairy farms in lower reaches. No major urbanisation in the catchment. No major catchment changes.	No major artificial influences.
47021	Kensey at Launceston Newport	33.43	SX3300385110	233003.0	85110.0	50°38'30.0793"N 4°21'47.4651"W	50.64169	-4.36318	Kensey	Launceston Newport		EA-DC	12N02	47	2002-06		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		2002-06-19	2023-09-30	0.877	0.033	2002-10-04	2002-10-04	13.5	2012-12-22	2012-12-22	0.099	0.252	0.483	2.07	2.82	0.56	7774	7774	100.0	2002-06-19		13.8	66.2	114.6	165.0	218.2	271.5	1273	1298	0.0789	0.2345	0.6302		0.0512	0.0996	0.3361	0.513	0.0124	0.0389			1.0					0.5	0.584	0.998	101.3	32.41	41.4	56.7	12.4	16.03	8.33	166	64	0.23	66.4	34.83	0.256	0.706	0.0218	0.0209	0.719	0.355	0.0174	0.788	0.258	1995..2001		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel rated section in canalised channel.	Velocity area station, initially installed to collect data for feasibility studies surrounding flood defence scheme and was then upgraded to a permanent station forming part of the flood warning system for River Kensey.	As the station is within a defended reach, flood flows are contained to a high level and all flows contained to date. Bankfull discharge is around 37m3/s. Two peak flow ratings across the period of record to take into account changes in the natural bed control. Rating developed by gaugings. Gauged to QMED and to around half of AMAX 1 but extrapolation considered reasonable as flows in bank. Some uncertainty exists in the low flow data due to the stony mobile bed conditions but flows are generally within 15-20%.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	The River Kensey catchment overlies Shale and Grit. Over this area, extensive mechanical deformation has taken place resulting in minor folding and faulting. Igneous activity in the form of Spilitic Lavas and intrusive Dolerite and Diabase is also evident within the catchment. From its source it flows through gently undulating or relatively level land with a fairly wide level valley floor. The Kensey flows from its source in a westerly direction towards Launceston. Just upstream of the town, the river passes under the rail embankment and then flows through a narrow, well defined floodplain. No major changes to catchment.	Predominantly rural catchment.
47022	Tory Brook at Newnham Park	15.72	SX5515457654	255154.0	57654.0	50°24'03.1187"N 4°02'22.0794"W	50.40087	-4.03947	Tory Brook	Newnham Park		EA-DC	S11512_FW	47	1979-04		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		1979-04-05	2023-09-30	0.543	0.057	2018-07-16	2018-07-16	5.38	1979-12-27	1979-12-27	0.144	0.301	0.441	1.033	1.297	0.64	16250	8774	53.994	1979-05-05		6.134	22.5	84.9	176.3	278.4	411.9	1454	1403	0.1746	0.0955	0.2725	0.0035	0.0237	0.2167	0.1514	0.3349	0.2531	0.0321			1.0		0.1486		0.0248	0.48	0.431	0.942	106.0	44.18	46.2	59.5	12.5	9.33	4.86	180	208	0.46	22.5	13.43	0.225	1.015	0.0232	0.0122	0.31	1.124	0.0141	0.586	1.255	2006		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel rated section influenced by China clay works in catchment.	Open channel rated section, opened in 1979 to collect data for licence determination in connection with upstream mine. Original site decommissioned in 1988. In 2003 the site was reopened as a Flood Warning station positioned slightly further downstream at Newnham Park road bridge. Current set up includes an ADVP gauge to assist in calibration of the stage-discharge relationship alongside current meter gaugings.	Until August 2018, the low flow stage-discharge relationship underwent multiple shifts as a result of a mobile bed at site. In August 2018, rip rap was installed in an attempt to stabilise the control at the lower end. Multiple ratings applied over the period of record.	WY2006/2007 rejected as likely occured during period of equipment failure. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	The upper Tory Brook catchment, to Lee Moor and Wotter, is primarily underlain by Granite with alluvium and river gravel along the watercourses. The majority of the rest of the catchment is underlain by Slate of the Upper Devonian period, with alluvium along the watercourses. This impermeable geology with steep topography leads to a reasonably rapid catchment response to storm events. However as a result of the artificial influences response may be considered muted compared to the catchment pre- china clay mining. No major changes to catchment.	China clay works have affected the catchment hydrology for over 200 years. The river flow regime may be affected by these works in a number of ways including; cross-catchment transfers, the potential for attenuation of catchment runoff in lagoons; changes in topography caused by the development of waste tips, which could increase catchment steepness leading to faster runoff; and the permeability of the soils may be reduced due to compaction and clay being brought to the surface. With the exception of these areas of china clay works, the upper catchment is predominantly rural containing only the small settlements of Lee Moor and Wotter.
47023	Tamar at Tamarstone Bridge	49.07	SS2831905513	228319.0	105513.0	50°49'25.0974"N 4°26'19.9468"W	50.82364	-4.43887	Tamar	Tamarstone Bridge		EA-DC	S12549_FW	47	2010-04	2017-10-01	US				false	true	true	true	false	false	false	false	false	false	false	false	false																				2010-04-15	2017-10-01	18.596	102.2	121.4	155.4	198.4	225.6	1254	1217	0.0773	0.2486	0.6409	0.0007	0.0255	0.0721	0.4098	0.488	0.0163	0.0051			1.0				0.0099	0.5	0.396	0.917	54.2	42.01	38.7	50.6	12.5	16.55	8.56	158	187	0.2	102.2	49.06	0.557	0.67	0.0519	0.003			0.0015			2009..2010	2009-10-01..2011-10-01	cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel flood warning gauge.	Open channel flood warning gauged installed just upstream of road bridge. Station closed 01/10/2017 and converted to level only site for flood warning.	ADVP flow gauge installed to assist in flow calculation at site. As site is subject to backwatering from downstream this is used to calculate high flows above a stage of around 1 m, approx 3 m3/s. Flow calculations are made via a combination of a low flow rating and data from the ADVP at higher levels. One peak flow rating across the period of record.		Most of the rocks in the Tamar catchment are hard mudstones, shales, siltstones, sandstones and minor limestones. A major mountain building event during the Carboniferous Period intensely folded the strata which resulted in extensive fissuring and faulting. The flow duration curve for the catchment is relatively steep through its length because the underlying granite, slate and shale restrict groundwater storage whilst slowly permeable soils in the upper catchment promote rapid surface water runoff. No major catchment changes.	The catchment is predominately rural. Tamar Lakes are found in the catchment. The Upper Lake is a water supply reservoir whilst the Lower Lake is no longer used as a reservoir and so acts as an online pond.
47024	Tavy at Tavistock Abbey Bridge	95.63	SX4830174511	248301.0	74511.0	50°33'02.2548"N 4°08'33.5954"W	50.55063	-4.14267	Tavy	Tavistock Abbey Bridge		EA-DC	SX47F022	47	1994-01		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		1994-01-01	2023-09-30	4.288	0.23	1995-08-29	1995-08-29	70.09	2020-12-18	2020-12-18	0.721	1.612	2.683	9.695	13.16	0.51	10865	10865	100.0	2010-03-17		93.275	81.1	167.2	302.6	518.0	601.1	1665	1666	0.083	0.0297	0.6332	0.2307	0.0221	0.0429	0.0807	0.6473	0.2228	0.0058			1.0		0.0097	0.2323	0.0245	0.48	0.516	0.998	104.6	33.28	53.8	71.4	13.1	21.49	10.47	325	245	0.28	81.1	95.63	0.699	1.073	0.0315	0.0019			0.0036			1993		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel site with ADVP flow gauge.	Open channel site. Stage-discharge is the primary flow calculation derived from gaugings and ADVP flow gauge data.	Station located in a section where flows are contained to a high level so the high flow dataset can be used with good confidence. Station is located in a natural open section and is controlled by a shoal 30m downstream. At high flows, Abbey Bridge 200m downstream of the station provides good stable hydraulic conditions and is the main control. Flow is well contained at least up to the highest peak on record so far. ADVP data has shown evidence of a backing up effect from about 3m and has been used to refine the upper end of the stage discharge relationship further.	Flow is now calculated from Feb 1994 (data from 1991 to 1994 has been discounted as it cannot be related to the current station datum). Historically the stage discharge relationship built up from a rated section was known to overestimate high flows. An acoustic Doppler was installed in 2010 and used to recalculate the historical rating to provide consistent peaks though the period of record. The site has undergone independent rainfall - runoff checks to ensure the flood peaks are physically realisable. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	The Tavy has a reputation as being one of England's fastest flowing rivers. Over the 28km from the source to the tidal limit at Lopwell it drops over 560m at an average gradient of 15.9m/km. As the catchment is impermeable with granite and slate the groundwater store is small. This, in conjunction with the steep topography, means that floods are characterised by a rapid rise and fall in water level. No major changes in catchment.	The catchment is almost exclusively rural consisting of farmland and moorland. There are small historical mine working found in the catchment.
47025	Wolf at Germansweek	11.31	SX44589422	244580.0	94220.0	50°43'36.3239"N 4°12'12.3076"W	50.72676	-4.20342	Wolf	Germansweek		EA-DC	SX49F007	47	1992-08		VA				true	true	false	false	true	false	false	true	false	false	false	false	false		1991-08-27	2022-09-30	0.278	0.0	1995-08-04	1995-08-25	11.41	2016-02-06	2016-02-06	0.01	0.06	0.133	0.676	1.008	0.39	11358	11304	99.525	1991-08-27		14.192	137.2	181.8	215.6	249.3	280.5	1299	1190	0.2093	0.1478	0.6335		0.0094	0.1714	0.2368	0.5856	0.0057	0.0004			1.0					0.5	0.409	1.0	76.9	40.81	37.7	48.5	12.1	5.54	3.21	215	237	0.28	137.2	10.77	0.097	0.579	0.007	0.0			0.0005			1990		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a relatively small catchment.	Station started in 1991 with a low level bed control. Channel approximately 5.2m wide.	Maximum flows may be considerable over-estimates as out of bank section of rating is simply an extrapolation of the in-bank rating. Access problems at high flows and wading gauging only. Mobile bed. Bankfull at 0.89m. Five ratings applied across period of record, further gaugings required to validate ratings but site is remote and regime is flashy so can be hard to gauge.	Missing data in 2001 due to Foot and Mouth epidemic meaning site visits were not able to happen.	Relatively small catchment area consists of Upper Carboniferous (mainly shale) with some areas of Sandstone, alluvium and river deposits. Land use mostly rural/agricultural. No urbanisation in the catchment. Roadford reservoir (downstream) completed in 1989. No major catchment changes.
48001	Fowey at Trekeivesteps	36.8	SX2274369816	222743.0	69816.0	50°30'04.5027"N 4°30'03.0857"W	50.50125	-4.50086	Fowey	Trekeivesteps	187.9	EA-DC	SX26F065	48	1968-10-04		CC	49.4	53.0	8.0	true	true	true	true	false	false	false	true	false	false	false	false	false	SRP	1957-10-01	2023-09-30	1.411	0.105	1959-10-05	1959-10-05	23.1	1979-12-27	1979-12-27	0.287	0.621	0.968	2.973	3.99	0.64	24106	23806	98.755	1958-10-01		17.329	189.5	221.5	271.6	318.0	404.3	1784	1637	0.1083	0.0407	0.7651	0.0545	0.0178	0.0668	0.0988	0.7416	0.0755	0.0018			1.0			0.2443	0.0003	0.47	0.444	0.938	92.3	40.65	48.9	68.1	12.8	15.73	6.88	269	175	0.16	189.5	36.69	0.564	0.853	0.0431	0.0007			0.0026			1968		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three-bay compound Crump Profile weir installed in 1969 to replace previous broad-crested weir with central notch.	Station opened in 10/1958 with a broad-crested weir with central notch (limited accuracy, flow overestimated) and since 05/1969 has been a three-bay compound Crump profile weir, with a middle crest length 1.52m and two side crests of 2.75m (7.01m total).	Flood embankments ensure the full range is gauged. One theoretical peak flow rating applied across period of record. Uncertainty in peak flows as no available gaugings to validate rating.	Peak flow data only available from 1969. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Moderate relief, wet moorland catchment on the Bodmin Moor Granite. Extensive hill and valley peat deposits. Kaolinised granite moderates direct runoff response. Sibleyback reservoir scheme under construction around 1968/69. Completed in April 1969.	Substantial flow modification from associated public water supply abstraction, Sibleyback Reservoir operation, and exports.
48003	Fal at Tregony	87.0	SW9210744747	192107.0	44747.0	50°15'57.6653"N 4°55'06.3716"W	50.26602	-4.91844	Fal	Tregony	6.9	EA-DC	SW94F056	48	1977-01-01		FLVA	13.0	3.2	6.7	true	true	true	true	false	false	true	true	true	true	false	false	true	EI	1978-06-08	2023-09-30	2.023	0.254	1984-09-08	1984-09-08	18.6	2012-12-22	2012-12-22	0.447	0.885	1.39	4.48	5.96	0.68	16551	16551	100.0	1961-02-01		11.041	9.0	55.4	125.2	207.7	301.0	1231	1211	0.1622	0.2151	0.4143	0.0018	0.0498	0.1585	0.34	0.2809	0.1809	0.0363			1.0				0.1558	0.45	0.546	0.983	78.8	34.6	42.4	56.7	11.8	27.77	13.92	126	242	0.14	9.0	89.03	0.624	1.109	0.0656	0.0175	0.537	1.019	0.0173	0.697	0.991			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station augmented by a low flow side-contracted flume. Some data unreliable due to siltation of flume an inlet pipes.	Originally a velocity-area station in a formalised trapezoidal channel built in 1961; augmented by a low flow, side-contracted flume 2.8m wide in 08/1967.	Full range station with sound high flow measurement. One peak flow rating applied across period of record.	Data available from 06/1978, earlier data unreliable due to silting of inlet pipes. Data between 1967 and 1978 is unreliable due to siltation of the flume. HIFs on NRFA from 01/1981. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Responsive catchment of moderate to low relief, draining Devonian slates, shales and grits. Upper reaches plateau-like alluvial flats. Traverses the kaolinised St Austell Granite. Land use is low grade agriculture and grazing, some woodland. No major changes to catchment.	Moderate modification to flows owing to industrial abstractions and returns.
48004	Warleggan at Trengoffe	25.3	SX1595167373	215951.0	67373.0	50°28'37.9463"N 4°35'43.1697"W	50.47721	-4.59532	Warleggan	Trengoffe	70.3	EA-DC	SX16F060	48	1969-01-01		CC	40.8	43.0	10.0	true	true	true	true	false	true	true	true	true	true	true	true	true	N	1969-09-21	2023-09-30	0.871	0.101	1976-08-27	1976-08-27	12.5	1979-12-27	1979-12-27	0.198	0.389	0.624	1.86	2.37	0.69	19733	19733	100.0	1969-09-22		9.864	70.6	148.8	232.7	262.8	307.6	1515	1445	0.1265	0.0737	0.751	0.0147	0.0276	0.0729	0.1735	0.6076	0.136	0.0022			1.0			0.1515		0.45	0.499	0.978	93.8	35.7	44.2	63.4	12.2	12.54	6.1	219	206	0.2	70.6	25.26	0.417	1.14	0.035	0.0014			0.0025					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three-bay compound Crump profile weir in entirely rural catchment. The only gauged natural catchment on Bodmin moor.	Three-bay compound Crump profile weir, with central crest length 1.52m and two side crests of 4.265m (10.05m total). Wing walls at 1.67m.	Weir thought to be fully modular. A downstream level sensor has been installed to inform any non-modularity. Flood banks contain flows up to wing wall height. Well confirmed by gaugings up to 0.5m (2.6 cumecs) but above this gauging suggests high flows overestimated due to skew flow in channel. Shoaling upstream of weir. Siltation problem as structure over-designed. The only gauged natural catchment on Bodmin Moor. No liability to backwater effects. One peak flow ratings applied to period of record. Confirmed by gaugings to 0.59m. All recorded flows in bank.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Entirely rural natural catchment with small scattered villages on moorland. The upper part of the catchment drains a moderate to steep relief consisting of kaolinised granite. The lower traverses metamorphosed Devonian slates. Baseflow high for an upland catchment due to storage in the granite. Land use is mainly rough grazing. Some china clay worked in upper catchment. No major changes to catchment.	Runoff natural to within 10% at Q95.
48005	Kenwyn at Truro	19.1	SW8197545030	181975.0	45030.0	50°15'53.6579"N 5°03'38.0096"W	50.2649	-5.06056	Kenwyn	Truro	7.2	EA-DC	SW84F054	48	1968-01-01		US	23.9	27.6	20.0	true	true	false	true	false	true	false	true	true	true	false	true	true	N	1968-10-01	2023-09-30	0.384	0.02	1976-08-22	1976-08-22	6.52	1988-01-27	1988-01-27	0.05	0.112	0.215	0.966	1.285	0.64	20088	20088	100.0	1968-10-31		5.427	8.3	46.8	85.6	117.2	146.5	1107	1100	0.06	0.3967	0.467		0.0763	0.0755	0.5548	0.2969	0.0126	0.0603			1.0				0.0753	0.42	0.601	0.988	90.4	32.62	36.0	49.2	11.0	8.47	4.82	83	114	0.19	14.3	19.02	0.106	0.625	0.0091	0.0282	0.842	0.474	0.0321	0.938	0.498			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three-bay compound Crump profile weir with flood retention ponds upstream that alter high flow response.	Three-bay compound Crump profile weir with central crest length 1.22m and two side crests of 1.524m and 1.535m (4.27m total). Crest levels are: left 7.09mAOD, central 7.4mAOD, right 7.09mAOD. Pier and wing wall height 1.98m.	Contains all flows. Weir can become non-modular at highest flows. Data from the Acoustic Time of Flight installed 100m upstream of the weir in 2009 have been integrated into the rating to improve the high flow accuracy. Previous rating overestimated high flows. New rating has reduced flows by up to 10% for peak flows on record. Low flow accuracy affected by variable shoaling directly upstream of weir. A timber weir d/s of the Crump, with a rectangular notch low flow section was installed in 06/2001 to allow water to be abstracted to feed the town leat. This is vulnerable to debris build up and can affect sensitivity of flow through central weir crest. Crump weir does not fully drown, but u/s flood storage ponds prevent large discharge over weir. One peak flow rating applied across period of record with the exception of the Jan 1988 high flow event where there are two temporary ratings applied. No bypassing expected.	Suspect data 28/07/2001 - 23/08/2001, resulting from backing up from an informal weir which was installed immediately downstream of the Crump in 06/2001. Flood retention ponds upstream, in operation from 01/1991. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Catchment of moderate relief on Old Red Sandstone and Devonian grits and shales, with wooded, incised valleys. Substantially natural catchment but flood retention ponds (from 01/1991) alter high flow response. High baseflow for the relief of the catchment.
48006	Cober at Helston County Bridge	37.5	SW6554327359	165543.0	27359.0	50°05'59.8071"N 5°16'47.4228"W	50.09995	-5.27984	Cober	Helston County Bridge	4.5	EA-DC	S20599_FW	48	1968-01-01		VA+IV	11.5			true	true	false	true	false	false	false	true	false	false	false	false	false	PGI	1968-11-01	2023-09-30	1.005	0.03	1976-09-09	1976-09-09	11.46	1979-12-27	1979-12-27	0.185	0.402	0.725	2.2	2.894	0.73	20057	14797	73.775	1968-10-01		5.67	7.1	71.4	146.2	192.1	250.3	1207	1209	0.0771	0.2098	0.665	0.0003	0.0478	0.091	0.4437	0.4052	0.0311	0.0289			1.0				0.1963	0.44	0.672	0.979	74.7	17.13	41.7	53.6	11.5	13.49	7.62	138	189	0.2	7.1	40.3	0.288	0.884	0.0334	0.0172	0.751	0.316	0.0182	0.799	0.333			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station modified multiple times throughout lifespan. ADVP installed in 2009 to improve high flows and account for a variable backwater effect from Loe Pool.	Velocity area station. Originally (1968) a velocity-area station in a formalised rectangular channel, 4m wide, with natural bed control. Informal broad-crested weir and sluice to power a water wheel, installed in 1975, 3m d/s as a temporary control which was then removed in 1976. Between 1976-1977 return to natural control followed by installation of a broad crested weir in 1977. Original gauging station closed and demolished in 1989. In 2003, the site reopened as a natural channel section in the same location as the original gauging station for low flows. In 2009, the station was relocated 200m upstream to County Bridge to estimate high flows.	At the original site, the station was bypassed during high flow events. Early ratings based on current meter gaugings for natural section. CEH rating used for post-weir period until station closed in 1989 as this provides the best fit to gaugings for this period. Backwatering effect can be influenced by penstock control at Loe Pool outflow. Measurement recommenced in 2003 at the old gauging station location but without the old hydraulic structures which were removed during the upgrade of the flood defence scheme. An ADVP was installed in 2009 to improve the existing rating and account for the backwater effect. The current site here has not yet bypassed (2021). One common upper limb covering the period 2003 to present with variable lower limbs. Flows from 2009 onwards are calculated using a combination of index velocity and stage-discharge, typically the stage-discharge relationship is used and then the index rating takes over at peak flows. The station is known to experience backwatering when Loe Pool is > 5.1 mAOD, but the direct flow measurement takes this into account. The ADVP has provided evidence that the backwater effect has so far (2021) had a greater impact causing elevated levels on the falling limb. Multiple peak flow ratings across period of record.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Natural catchment. 70% drains the Carnmenellis Granite. The remainder is made up of grits, shales and slates of Devonian age. Upper catchment mainly granite, lower catchment fine granite slates of the Maylor series. Subdued response to rainfall. Mainly agricultural. Good example of a Cornish stream. No major changes to catchment.	Moderate influence from public water supply and industrial abstractions, and mine pumping.
48007	Kennal at Ponsanooth	26.5	SW7622837642	176228.0	37642.0	50°11'47.0802"N 5°08'12.1574"W	50.19641	-5.13671	Kennal	Ponsanooth	13.6	EA-DC	SW73F053	48	1968-01-01		C	42.1	43.0	38.7	true	true	true	true	false	false	false	true	false	false	false	false	false	SRPGI	1968-09-30	2023-09-30	0.518	0.027	1990-08-10	1992-07-29	6.06	2003-01-01	2003-01-01	0.084	0.187	0.324	1.23	1.64	0.66	20089	20057	99.841	1968-10-01		4.18	11.6	118.3	164.8	209.3	250.3	1293	1294	0.0762	0.2112	0.6351		0.0466	0.0835	0.3708	0.4738	0.0154	0.0234			1.0				0.1587	0.44	0.736	0.867	65.7	8.63	43.7	57.1	11.6	11.3	6.37	162	77	0.24	12.0	26.89	0.197	0.946	0.0258	0.0142	0.602	0.639	0.0106	0.703	0.567			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump Profile weir with substantial modification of flows owing to exports to Stithians Reservoir.	Crump profile weir with 4.88m crest length, wing walls and flood banks at height of 2.2m. Weir face retrofitted with Low Cost Baffles and vertically mounted eel tiles in April 2014. Station approximately 4 miles downstream of Stithians reservoir (Wendron Moor).	Modular at all recorded stages. No drowning out. Verified by survey of wrack mark levels following 11/2012 flood, the highest on record. Gauged to 0.37m (2.5 cumecs) with good fit to theoretical rating, but insensitivity means low flows are susceptible to errors. Good theoretical peak flow rating curve applied across period of record. Confirmed by gaugings to 0.37m and all flows contained in bank.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Moderate to steep catchment draining the Carnmenellis Granite, with small area of metamorphosed shales and grits. Granite well weathered, giving high baseflow. Responsive to heavy rainfall. No major changes to catchment.	Abstraction for public water supply. Some industrial usage produces unpredictable hydrographs. Substantial modification to flows owing to exports from Stithians Reservoir (4 miles upstream).
48008	St Austell at Molingey	29.9	SX0070749476	200707.0	49476.0	50°18'41.2667"N 4°48'01.4917"W	50.31146	-4.80041	St Austell	Molingey	11.5	EA-DC	18A08	48	1971-01-01		FL				true	false	false	false	false	false	false	true	false	false	false	false	false	GI	2004-07-23	2023-09-30	0.833	0.073	2018-09-04	2018-09-04	5.36	2012-12-22	2012-12-22	0.203	0.465	0.642	1.65	2.17	0.75	7009	7008	99.986				14.1	48.6	115.9	246.7	304.9	1297	1272	0.1362	0.1445	0.3522	0.0017	0.1355	0.1275	0.2489	0.2816	0.2023	0.1332			1.0				0.0905	0.45	0.601	0.961	111.0	30.49	42.1	56.6	11.4	10.52	5.19	137	152	0.27	14.1	30.25	0.39	0.792	0.0343	0.0693	0.741	0.842	0.0734	0.802	0.843			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flume on the St Austell River.		Significant siltation in the flume which means that the flow data is in a constant state of flux.
48009	St Neot at Craigshill Wood	22.7	SX1843665995	218436.0	65995.0	50°27'56.1695"N 4°33'34.8120"W	50.4656	-4.55967	St Neot	Craigshill Wood	70.5	EA-DC	SX16F062	48	1971-01-01		CC		32.0	12.1	true	true	true	true	false	false	false	true	false	false	false	false	false	SRPE	1971-03-16	2023-09-30	0.728	0.064	1976-08-26	1976-08-27	13.2	1979-12-27	1979-12-27	0.207	0.416	0.593	1.26	1.67	0.68	19192	19192	100.0	1971-03-10		8.465	70.3	151.8	254.5	280.4	339.9	1612	1511	0.1191	0.0807	0.5936	0.0275	0.038	0.0665	0.2783	0.4758	0.0289	0.0024			1.0			0.1841		0.45	0.463	0.982	78.8	39.93	45.0	64.0	12.2	13.43	7.24	230	187	0.32	70.3	22.97	0.258	0.972	0.0226	0.0034			0.0023			1970..2022	1983-10-01..2023-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three-bay compound Crump weir. Flows regulated and influenced by PWS from Colliford Reservoir since construction in 1983.	Three-bay compound Crump profile weir, middle crest lengths 1.75m and side crests 2.75m (total 7.25m). Wing walls at 1.7m.	Flood banks contain flows up to wingwalls. Fully modular. Pre-1983 catchment had a natural flow regime; post-1983, flows are attenuated by Colliford reservoir. Now no bypassing as flows are moderated/contained by the reservoir. One theoretical peak flow rating applied across period of record. Confirmed by gaugings to 0.6m.	Suggest only the pre-1983 record is used for flood frequency estimation and as such Peak Flow data are rejected post-1983. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Majority of upper catchment on granite intrusion of Bodmin Moor. Hill tops are rounded with some peat; valleys can be steep. Lower part of catchment underlain by metamorphosed Devonian slates. Entirely rural before reservoir built; some abandoned china clay pits. Baseflow high from storage in kaolinised granite. Colliford reservoir began to fill in 1983. Pre-reservoir FARL is 0.982 and should be used with the pre-reservoir part of the records. Post-reservoir FARL is 0.635.	Since filling of Colliford Reservoir river has been subject to flow regulation and public water supply exports. Runoff increased by effluent returns.
48010	Seaton at Trebrownbridge	39.1	SX2995659471	229956.0	59471.0	50°24'37.5797"N 4°23'40.3558"W	50.41044	-4.39454	Seaton	Trebrownbridge	26.6	EA-DC	SX25F064	48	1972-01-01		CC	65.9	37.5	13.6	true	true	false	true	false	false	false	true	false	false	false	false	false	GIN	1957-10-01	2023-09-30	1.068	0.128	1976-08-26	1976-08-26	13.2	2012-12-22	2012-12-22	0.226	0.451	0.744	2.36	2.974	0.72	24106	20088	83.332	1972-08-02		7.29	25.1	71.9	120.4	237.4	366.2	1398	1325	0.0702	0.3115	0.5463	0.002	0.0652	0.0805	0.3943	0.4803	0.0087	0.0355			1.0			0.0011	0.096	0.48	0.59	0.993	107.6	30.67	42.2	56.5	11.9	15.42	7.21	136	172	0.21	25.1	38.57	0.24	0.932	0.0202	0.0155	0.595	1.387	0.0167	0.747	1.332	1971..2005	1971-10-01..2006-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three-bay compound Crump profile weir with minimal artificial interference with natural flow regime.	Three-bay compound Crump profile weir, middle crest length 3m and side crests 4m each (total 11m). Wing walls and floodbanks at 2.05m.	Thought to be fully modular but evidence suggests that in 2012 when twice, the peak level reached more than 1m stage, the weir may have drowned. This is still to be confirmed. Upstream subject to significant siltation/sedimentation. Weed growth problems. Two peak flow ratings applied across period of record.	Peak flows rejected 1971-2006 as stilling well issues causing significant under-recording of peak river levels. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Rises on the Caradon Hill granites. Elongated, linear catchment springing from southernmost outcrop of Bodmin Granite. Great bulk of the catchment on Devonian slates and shales interspersed with tuffs and lavas. Moderate relief. Land use is low-grade agriculture, grazing and some afforestation. No major changes to catchment.	Natural to within 10% at Q95, minimal interference with natural flow regime.
48011	Fowey at Restormel	169.1	SX0979662454	209796.0	62454.0	50°25'51.7908"N 4°40'46.1075"W	50.43105	-4.67947	Fowey	Restormel	9.2	EA-DC	SX06F059	48	1961-10-01		CC	145.8	74.4	7.8	true	true	true	true	false	false	false	true	false	true	false	false	false	SRP	1961-03-31	2023-09-30	4.724	0.265	1976-08-28	1976-08-28	82.58	1979-12-27	1979-12-27	0.883	1.754	3.032	10.75	14.19	0.62	22829	22829	100.0	1961-03-31		50.9	8.9	96.3	207.2	283.9	404.3	1513	1435	0.1818	0.1071	0.6359	0.0213	0.0261	0.1563	0.2047	0.5582	0.0481	0.0057			1.0		0.01	0.1098	0.0192	0.46	0.522	0.985	113.3	35.26	44.3	62.3	12.1	37.59	17.2	196	191	0.16	10.3	167.2	0.524	1.007	0.0349	0.0022			0.0025			1960..2022	1983-10-01..2023-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir with tailwater recorder. Flows influenced by Colliford and Siblybank reservoirs.	Compound Crump profile weir with tailwater recorder, with middle crest length 3.5m and 2 side crests of 6.5m (16.5m total). Piers at 1.75m, wing walls at 2.5m. Superseded velocity-area station 48002 (Fowey at Restormel One), from which pre-1973 data is taken.	Flood banks contain flows up to wing wall height, though drowning occurs ~0.8-1.0m. Upstream cableway, fish counter. Theoretical rating to 0.9m (~25 cumecs), updated in 2011 to fit gaugings above this level. Colliford Reservoir began to fill in July 1983. Recent gaugings and analysis from a tailwater recorder show that the weir goes non-modular from a stage of approx 1 m and is totally drowned above 1.3 m. However drowning is dealt with through rating by gaugings. Rating revised following gauging of 11/2010 event. Gaugings taken during 12/2012 floods confirmed this. Bypassing on left hand bank during 2012 flood but insignificant (<5%). Three peak flow ratings across period of record. Ratings sound across the range as max gauging is approx max recorded stage.	Gap in peak flow rating record from October to December 1993 due to upgrade of the fish counter and remedial work on weir crest . Peak Flow data are rejected post-1983. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Moderate relief catchment whose headwaters drain the kaolinised granite of Bodmin Moor. Middle and low reaches drain Devonian slates and grits. Some valley storage in gravels. Low grade agriculture, grazing, some forestry and cultivation. Pre-reservoir FARL is 0.985 and should be used with the pre-reservoir part of the records. Post-reservoir FARL is 0.920.	Runoff reduced by public water supply abstraction, causing substantial modifications to flow. 12-13% of the catchment is impounded - Colliford (1983) & Siblybank (1969) reservoirs . Other public water supply exports also affect the flow.
48012	Fal at Trenowth	65.07	SW93735060	193730.0	50600.0	50°19'08.9691"N 4°53'56.0024"W	50.31916	-4.89889	Fal	Trenowth		EA-DC	S19589_FW	48	1998-01		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		1998-01-01	2023-09-30	1.666	0.014	2003-09-12	2003-09-12	15.2	2012-12-22	2012-12-22	0.268	0.81	1.27	3.47	4.39	0.68	9404	9402	99.979	1998-01-01		9.965	34.8	86.5	144.8	219.7	301.0	1262	1248	0.1819	0.1611	0.3896	0.0021	0.0522	0.1754	0.2534	0.2758	0.246	0.0447			1.0				0.1783	0.45	0.523	0.979	72.5	35.49	43.4	58.3	11.9	20.64	9.7	149	252	0.19	34.8	65.07	0.604	1.144	0.0712	0.0202	0.515	0.892	0.0203	0.706	0.832	1997		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area open channel flood warning gauge on channel with remarkably stable cross section.	Open channel flood warning gauge.	Channel section shown to have remarkably stable cross section so good confidence in derived rating and flow data (Gauged to within 80% of QMED). One peak flow rating across period of record. Rated by gaugings.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The north of the catchment consists of the St. Austell granite intrusion. The southern portion of this granite has undergone extreme weathering and the resultant china clays are extensively mined. The Devonian sediments within the catchment consist of the fossiliferous slates of the Meadfoot Beds south of the St. Austell granite, the interbedded grey slate and light brown sandstone of the Grampound Grits and over the majority of the southern section, the slates and sandstones of the Veryan, Portscatho, Falmouth and Mylor Series. As a result of this impermeable geology there is a ready response to rainfall. No major changes to catchment.	Extensive china clay mining and historical metalliferous mining in a large part of the catchment. Apart from that the catchment is predominately rural.
48801	Cober at Trenear	26.53	SW67573112	167570.0	31120.0	50°08'04.2489"N 5°15'13.8045"W	50.13451	-5.25383	Cober	Trenear		EA-DC	SW63F042	48	1988-01		TP				true	false	false	false	false	false	false	true	false	false	false	false	false		1988-01-07	2023-09-30	0.471	0.0	1989-08-07	1989-08-07	5.25	1988-01-27	1988-01-27	0.07	0.176	0.325	1.06	1.36	0.73	13051	12925	99.035				109.3	130.1	160.0	202.5	250.3	1260	1266	0.0651	0.2147	0.7007	0.0004	0.0191	0.0835	0.4331	0.4444	0.0367	0.0021			1.0				0.2414	0.44	0.671	0.976	65.0	14.88	42.4	55.1	11.6	8.22	4.32	162	186	0.17	109.3	26.5	0.29	0.755	0.0348	0.0035			0.004					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Thin plate weir installed in 1988 and replaced in 2001.	Station opened in 1988 with a thin plate weir, approximately 4m wide. New stilling well, hut and new thin plate weir since September 2001. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Unknown change in control in February 1998 which led to re-working of the rating. Banks have collapsed twice. Leaking weir in September 2000. Often bypasses at high flows, bankfull at 0.952m. Rating history is complex when compared to station history but matches gaugings from each period well. Multiple ratings applied across period of record. The most recent is valid from September 2001 when work rebuilding gauging station was completed and based on gaugings since 2001, does not account for bypassing. Current rating is in place to bankfull. Acoustic Time of Flight installed in March 2015 to improve the rating at the low end when it is difficult to gauge. Bypassing is a known problem and further work needs to be carried out to validate the rating at high flows since the station was rebuilt.		Igneous catchment, granite with some areas of alluvium. Land use is mostly rural/agricultural with little urbanisation. No major changes to catchment.	Station affected by a pumping station. Compensation flow.
48803	Carnon at Bissoe	33.62	SW77444128	177440.0	41280.0	50°13'46.3361"N 5°07'18.7987"W	50.22954	-5.12189	Carnon	Bissoe		EA-DC	SW74F056	48	1994-10		FV				true	true	false	true	false	false	false	true	false	false	false	false	false		1994-10-27	2020-09-30	0.839	0.132	2011-10-07	2011-10-20	7.11	2003-01-01	2003-01-01	0.229	0.391	0.571	1.905	2.44	0.8	9471	9471	100.0	1994-10-27		4.844	9.1	55.2	99.0	163.9	233.9	1166	1161	0.0566	0.198	0.6363	0.0007	0.1043	0.1125	0.3697	0.4196	0.0323	0.0646			1.0				0.06	0.42	0.623	0.984	84.6	27.03	39.3	52.1	11.2	9.42	5.22	103	90	0.23	9.4	33.62	0.243	0.807	0.0214	0.0341	0.55	1.007	0.0258	0.682	1.023			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir opened in 1994 gauging a mainly rural catchment.	Station opened in 1994. Flat V weir, crest length approximately 4.0m wide.	Relatively straight approach. High sediment loads. Bankfull at 2.5m. Three peak flow ratings across period of record. Change in downstream maintenance regime has resulted in gradual infilling of channel and drowning of the weir from an increasingly lower level (0.33m). Early drowning and In addition impacts from backing up from Bissoe bridge has resulted in a rating change from October 2011 based on extensive gauging. Acoustic Time of Flight was installed in 2013 due to the unstable stage discharge relationship. Therefore good confidence in data from 2011 onwards.	Data removed from 2020 temporarily due to reliability issues.	The catchment consists mostly of Devonian slates and sandstones and Granite. Also with some areas of alluvium, Greenstones and Quartz Porphyry. Land use mostly rural with some urbanisation. No major changes in catchment.	No major influences to flow regime.
49001	Camel at Denby	208.8	SX0174868159	201748.0	68159.0	50°28'46.6825"N 4°47'44.4226"W	50.47963	-4.79567	Camel	Denby	4.6	EA-DC	SX06F058	49	1964-01-01	2019-03-12	VA	43.0		10.5	true	true	true	true	false	false	false	false	true	true	true	false	true	SRPE	1964-08-31	2019-03-12	5.962	0.343	1976-08-28	1976-08-28	89.33	1993-06-12	1993-06-12	0.988	2.347	4.029	13.34	17.33	0.63	19917	19917	100.0	1964-08-11		57.5	4.5	72.9	161.5	281.8	411.2	1355	1338	0.1297	0.1496	0.6467	0.0196	0.0454	0.1157	0.2764	0.5455	0.0349	0.024			1.0		0.0159	0.0584	0.1119	0.45	0.555	0.987	87.9	34.61	42.9	59.2	12.1	33.98	15.94	174	259	0.15	4.6	209.94	0.402	1.142	0.0338	0.0121	0.686	0.564	0.0122	0.794	0.58			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, with a concrete low flow control and a cableway, replaced an unreliable station at Grogley/Polbrook, 1km downstream, in 1954. Site closed March 2019.	Open channel velocity area station replaced an unreliable station at Grogley/Polbrook, 1km downstream, in 1964. A concrete low level bed control was built in 1980 and a new cableway in December 2000. Site closed March 2019.	Flood banks contain flow at the gauging section, but bypassing will occur (and is estimated) at higher flows. Control rebuilt (raised embankments, wingwalls) and structural repairs made to approach channel in 2000. Multiple peak flow ratings across the period of record including an Index Velocity rating from 2008 onwards. Further check made on 2012 event magnitude using correlation with the adjacent River Fowey catchment and rainfall-runoff modelling. This estimate, together with data from the Acoustic Doppler was used to revise the high flow rating for period of record (full rating review carried out in 2013 and applied back to 1980 when the low level bed control was installed). This analysis refuted previous estimates produced after the 1993 event and gaugings taken in 1981. However as there is better confidence in the 2012 analysis the rating has been revised on this basis.	Early peaks are from Grogley 1958-1964 - hence very unreliable and should not be used. Inspection of site made after 12/2012 event, wrack marks surveyed and peak flow estimates produced using slope-area method. This takes into account bypassing and out of bank flow at the gauge. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	The upper catchment drains Devonian slates (variously affected by the granite) and the Bodmin Moor Granite. Lower catchment drains Devonian slates and grits. Land use is moorland and low grade agriculture and grazing. No major changes in catchment.	Crowdy Reservoir in north-east of catchment affects runoff. Runoff reduced by public water supply abstraction. Sewage effluent returns from Bodmin.
49002	Hayle at St Erth	47.6	SW5488134171	154881.0	34171.0	50°09'24.4675"N 5°25'58.9101"W	50.1568	-5.43303	Hayle	St Erth	7.0	EA-DC	SW53F051	49	1957-01-01		CC	21.3	22.8	7.3	true	true	true	true	false	false	false	true	false	false	false	false	false	GI	1957-10-01	2023-09-30	0.999	0.137	1976-08-29	1976-08-29	8.62	2003-01-01	2003-01-01	0.231	0.426	0.695	2.21	2.79	0.82	24106	20669	85.742	1957-02-01		4.42	6.6	40.4	77.2	127.7	206.6	1050	1076	0.0887	0.4027	0.4442	0.0033	0.0603	0.0811	0.593	0.2773	0.041	0.0068			1.0				0.0835	0.44	0.642	0.977	61.2	25.57	38.1	47.3	11.2	15.77	7.85	80	267	0.19	6.7	48.58	0.26	0.738	0.0267	0.0144	0.442	0.965	0.0079	0.67	0.998	1956..1967	1957-02-01..1968-01-06	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir with some issues from weed growth. Flows can be affected by mine drainage.	Compound Crump profile weir. Width of middle crest of 1.22m and the two side crests of 1.675m each. Piers and wingwalls at a height of 1.83m with floodbanks at 3.8m. In 2023, eel pass tiles were installed along the left hand bank outer weir and fish bristles on the centre weir.	High flows may go out of bank, but a flood channel ensures flow is contained. May drown at high flows. Weir was built in 1968 and superseded a velocity-area station for which it was not possible to derive a satisfactory rating curve because of variable weed growth. Weeds subsequently controlled by occasional cutting, but remained an issue. One peak flow rating valid across the Crump period of record. Rating confirmed by gaugings to 1.26 m. Max gauging during 12/2012 flood. Although weir drowned during this event existing rating was good. As this is the highest flood peak since the station opened, record can assumed to be good throughout.	Peak flows rejected pre-Crump (for 1957-1968) because variable weed growth made derivation of a satisfactory velocity-area rating impossible. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Headwaters drain two moorland granite outcrops. Majority of the catchment is underlain by grits and shales of Devonian age, crossed by dyke swarms. Mining spoil in the floodplain. Generally low-grade agricultural use. Slow responding catchment with much storage. Historically some mining in catchment.	Runoff influenced by groundwater abstraction/recharge. Abstraction for industrial/agricultural purposes. Mine drainage may moderately affect flows.
49003	De Lank at De Lank	21.5	SX1326276556	213262.0	76556.0	50°33'31.8655"N 4°38'16.0022"W	50.55885	-4.63778	De Lank	De Lank	226.4	EA-DC	SX17F063	49	1966-01-01		CC	32.0	14.4	15.7	true	true	true	true	false	false	false	true	false	false	false	false	false	P	1969-11-01	2023-09-30	0.772	0.013	1975-07-06	1975-07-06	12.4	1979-12-27	1979-12-27	0.093	0.284	0.506	1.708	2.34	0.55	19692	19692	100.0	1966-12-01		14.299	228.6	252.5	278.4	323.3	411.2	1719	1628	0.0997	0.0183	0.7515	0.1148	0.0157	0.059	0.063	0.7601	0.1155	0.0025			1.0			0.2826	0.0117	0.45	0.379	0.998	76.0	47.75	47.7	66.4	12.9	7.74	4.78	284	244	0.16	228.6	21.61	0.666	0.849	0.0636	0.0	0.0		0.0					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three-bay compound weir gauging a responsive, wet catchment with headwaters on Bodmin Moor.	Three-bay compound Crump profile weir, with middle crest length 1.22m and side crests 3.2m (7.62m total). Divide piers 1.01m high, wing walls 1.62m. Unusually small difference between crest elevations (the central crest is 0.095m below the outer two crests). Fish pass easements including vertically mounted eel tiles in the right hand bank crest/ wingwall and bristles on the central glacis installed in March 2019.	Very seldom drowned or outflanked; no bypassing. Possible siltation problems in summer months. Difficult site to spot gauge due to high velocities. Theoretical rating applied to period of record. Confirmed by gaugings to 0.4m and site never bypassed. Since the installation of fish easements in March 2019, no significant deviations from the current rating have been identified. A webcam is used to identify maintenence issues.	Missing data in 02/2002 due to logger failure during maintenance work. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Moderate relief, responsive, wet catchment on Bodmin Moor Granite. Unusually the river occupies marshy alluvial flats in the headwaters. No major changes to catchment.	Flows modified by public water supply works.
49004	Gannel at Gwills	41.0	SW8286659268	182866.0	59268.0	50°23'35.1519"N 5°03'22.5857"W	50.3931	-5.05627	Gannel	Gwills	8.8	EA-DC	SW85F055	49	1969-01-01		C	40.0	40.8	37.0	true	true	true	true	false	true	true	true	true	true	false	true	true	GEI	1969-12-01	2023-09-30	0.732	0.038	1984-09-19	2022-08-14	11.4	2012-11-24	2012-11-24	0.091	0.232	0.448	1.73	2.3	0.67	19662	19662	100.0	1969-12-01		13.796	8.5	43.3	78.2	113.4	202.9	1065	1046	0.0907	0.4062	0.448	0.0165	0.0279	0.0659	0.5892	0.2996	0.0266	0.0183			1.0				0.2023	0.45	0.617	0.999	71.5	32.08	34.6	46.5	11.1	10.79	5.71	78	295	0.15	8.5	40.83	0.267	0.895	0.0254	0.012	0.497	1.29	0.0074	0.668	1.247			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir, non-modular at high flows. Troubled by accretion downstream of structure filling the fish pool.	Crump profile weir, crest length 6m, wing walls 1.9m.	Flood banks contain flow up to 2.78m; they may be treated as weirs for higher stages. Survey of wrack marks following the 2012 floods show that the weir was drowned at a stage of 1.558 m. Initial analysis suggests this drowning would reduce peak flows by approximately 20%. However insufficient gaugings are available to revise the existing empirical rating. As such the flow data at these levels must be treated with caution. Bypassing is unlikely at stages below structure full, although the valley inundates upstream of the road bridge. Insensitive at low flows. Troubled by accretion downstream of structure filling the fish pool. One peak flow rating applied across period of record. Weir known to be non-modular during 2012 floods, therefore drowning known to affect station at 1.558 m. No rating revision yet made due to a lack of gaugings. Downstream level sensor installed in August 2022 to inform the degree of non-modularity and a high flow rating review.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Moderately steep catchment having subdued response, draining calcareous slates and thin limestones of the lower Devonian. Land use is low-grade agriculture; pasture, mainly diary and mixed farming. No major changes to catchment.	Natural catchment but mine drainage may affect low flows. Runoff influenced by groundwater abstraction/recharge. Industrial/agricultural abstractions and effluent returns have minimal impact.
49005	Bolingey Stream at Bolingey Cocks Bridge	16.08	SW7684152883	176841.0	52883.0	50°20'00.6202"N 5°08'13.6392"W	50.33351	-5.13712	Bolingey Stream	Bolingey Cocks Bridge		EA-DC	S23538_FW	49	2010-06		US				true	true	true	true	false	false	false	true	false	false	false	false	false		2010-06-15	2023-09-30	0.309	0.02	2011-08-09	2011-09-02	3.97	2012-11-24	2012-11-24	0.035	0.089	0.177	0.773	1.05	0.63	4856	4856	100.0	2010-06-15		4.072	10.0	38.4	74.0	109.5	145.4	1068	1044	0.1495	0.3767	0.4279	0.0014	0.0387	0.1296	0.519	0.3024	0.032	0.0169			1.0				0.1039	0.42	0.627	0.991	81.4	31.92	35.2	48.5	10.9	6.99	3.72	73	309	0.12	10.0	16.08	0.222	0.747	0.0229	0.0084	0.606	0.719	0.006	0.686	0.711			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Time of flight ultrasonic gauge installed upstream of road bridge in rectangular channel cross section. Station used to issue flood warnings for Perranporth downstream.	Acoustic Time of Flight installed upstream of road bridge in rectangular channel cross section. Station used to issue flood warnings for Perranporth downstream.	Above 0.61m, flows are calculated directly by time of flight Ultrasonic gauge and high flow check gaugings have shown good agreement. Currently gauged up to a level of 0.9m or 3.6m3/s. The bridge downstream is not expected to impact the high flow data. Below 0.61m stage, flows are calculated from a stage discharge relationship built up by spot flow gaugings.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	The Bolingey Stream flows from southeast to northwest and around the eastern edge of Perranporth. The Bolingey Stream catchment is longer and wider than the neighbouring Perrancoombe Stream Catchment, although the valley sides are still steep and the floodplain comparatively narrow. There are a number of wells and springs in the upper catchment and a number of small, offline and online, ponds. The solid geology of the catchment is the Ladock/Grampound grit beds of the Devonian period. These beds are composed predominantly of slate with thin beds of sandstone and cherty carbonate layers. The drift geology consists of alluvium along the watercourse with felsite beds. The catchment soils are predominantly well drained fine loam and silt types, with small areas having more slowly permeable sub-soils, with slight seasonal waterlogging. The physical characteristics of the catchment suggest that runoff response to a rainfall event is likely to be rapid, although mine workings may provide some attenuation. No major changes to catchment.	Predominantly rural catchment.
49006	Camel at Camelford	12.86	SX1067183875	210671.0	83875.0	50°37'25.5524"N 4°40'40.9693"W	50.62376	-4.67805	Camel	Camelford		EA-DC	25B12	49	2006-09		VA				true	true	false	true	false	false	false	true	false	false	false	false	false		2006-09-13	2023-09-30	0.429	0.002	2018-07-25	2018-07-25	5.12	2008-07-09	2008-07-09	0.044	0.153	0.27	1.0	1.3	0.56	6227	6221	99.904	2006-09-13		8.41	184.0	225.5	253.5	285.1	304.4	1439	1418	0.0459	0.2341	0.6895		0.0156	0.0523	0.3451	0.5818	0.0143	0.0065			1.0				0.2783	0.46	0.575	1.0	57.5	35.75	43.4	59.5	12.4	7.44	3.93	253	227	0.14	184.0	12.52	0.128	0.846	0.0126	0.003			0.0029					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel rated section located within flood defence scheme. Mostly rural catchment.	Open channel rated section located within flood defence scheme. Station located upstream of non-standard weir and fish pass and rated by gauging. ADVP flow gauge also installed to assist in rating process.	Flows contained by flood banks at site. Gauged to 75% of QMED. Site is insensitive at low flows. Two peak flow ratings applied across the period of record. Reasonable confidence in low flows now following gaugings after work on fish pass and weir. Lowest gauging currently at 0.170m stage. More gaugings needed to confirm both the low flow and high flow ratings.		The catchment if made up mainly of Upper and Lower Devonian slates. Because of the low permeability of the rocks, rainfall can result in rapid runoff and therefore, river levels generally rise quickly after rain. No major changes to catchment.	The catchment is almost exclusively rural consisting of farmland and moorland.
49007	Camel at Bodmin Dunmere	138.85	SX0445667451	204456.0	67451.0	50°28'27.0640"N 4°45'25.8530"W	50.47418	-4.75718	Camel	Bodmin Dunmere	30.0	EA-DC	SX06F057	49	2015-04-24		US				true	false	false	false	false	false	false	true	false	false	false	false	false	SRPE	2015-04-24	2023-09-30	4.49	0.285	2022-08-13	2022-08-13	34.36	2020-12-18	2020-12-18	0.572	1.477	2.855	10.48	13.5	0.62	3082	2905	94.257									1439	1395																		0.45	0.539	0.982	86.6	35.19	43.8	60.8	12.4	30.7	17.5	208	251	0.25	11.8	138.84	0.463	1.089	0.0392	0.0095	0.714	0.458	0.0103	0.82	0.46			gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	8 cross path ultrasonic gauge full range flow site.	Cross path ultrasonic gauge attached to 15m high bridge abutments in a deep section of river, also held up by a stable shoal downstream. A replacement for Denby (49001) 2.5 miles downstream which closed in March 2019.	A full range site opened in 2015. High flows should be mostly contained although bypassing is possible via a disused leat which flows through the embankment from the floodplain upstream. Low flow sensitivity is maintained by a stable shoal downstream. Flow data is currently derived from a rating developed from spot flow gaugings up to 2.241m/ 33.2 cumecs. The rating will be a back up data source when the flow record is direct from the ultrasonic. Paths can be impacted by aeration within the section at higher flows.	4 periods of missing data in 2016/7 related to equipment/ power failures during the station developmental phase. This data will be infilled in the near future using Denby as a donor site.	The upper catchment drains Devonian slates (variously affected by the granite) and the Bodmin Moor Granite. Lower catchment drains Devonian slates and grits. Land use is moorland and low grade agriculture and grazing. No major changes in catchment.	Crowdy Reservoir in the north-east of the catchment affects runoff. Runoff reduced by Public Water Supply abstraction. Sewage effluent returns from Bodmin.
49008	Penberth River at Penberth	14.09	SW4001422986	140014.0	22986.0	50°03'00.2599"N 5°37'59.2528"W	50.05007	-5.63313	Penberth River	Penberth	12.0	EA-DC	SW42F895	49	1993-12-01		MIS				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1993-12-16	2023-09-07	0.221	0.009	1995-07-05	2022-08-14	2.93	2003-01-01	2003-01-01	0.024	0.064	0.123	0.567	0.737	0.72	10858	10852	99.945									1049	1041																		0.44	0.712	0.995	64.0	9.61	36.1	47.9	10.8	7.36	4.37	95	186	0.29	9.5	14.1	0.362	0.956	0.0386	0.0051	0.267	0.751	0.004					gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Natural catchment located on the Lands End Peninsula.	A 90 degree Vee Notch thin plate weir flanked by bevelled concrete shoulders into which additional boards are set to control water levels in summer . Installed in 1993 to assess water resources on a remote, small natural catchment in response to an abstraction scheme that was never developed. Now used to indicate water resources status on the Lands End Peninsula.	There is a significant drop to the downstream bed level which allows the weir to remain modular up to bankfull. The site is good for low flow estimation but can suffer from sediment encroachment behind the vee notch. The vee notch prior to July 2006 was installed back to front with unclear impact on the data. High flows are reasonable to bankfull at 0.7m. Gauged to 58% of QMed. 2 ratings cover the por. Boards-in during the summer months and Boards-out during the winter months.	Evidence of bypassing during 2 exceptionally high flows of 24/25 November 2012 and 1 January 2003. Flows under-estimated for these events which were above a stage of 0.9m and a flow of 5 cumecs.	Granite Landsend intrusion with micro-granite. Upper reaches of the catchment flat plateau with a mix of moorland, bog, rough grazing, arable and daffodil agriculture. Very steep, narrow and incised in the lower catchment to the sea.	No licenced abstractions or discharges in the catchment. Pronounced diurnal trace manifests in the data during the summer months. Boards in during the summer to back up the water and fill an on-line pond. No impact on the flow record as the pond returns water immediately upstream of the weir.
50001	Taw at Umberleigh	826.2	SS6079523662	260795.0	123662.0	50°59'43.6875"N 3°59'06.1487"W	50.99547	-3.98504	Taw	Umberleigh	14.1	EA-DC	SS62F001	50	1958-01-01		VA	170.0		9.2	true	true	true	true	false	true	false	true	true	true	true	true	true	RP	1958-09-30	2023-09-30	18.165	0.179	1976-08-28	1976-08-28	358.0	2012-12-22	2012-12-22	1.23	4.22	8.78	47.9	66.0	0.43	23742	23742	100.0	1958-09-26		238.39	11.2	101.7	168.4	279.1	811.4	1191	1153	0.1292	0.2262	0.6015	0.0177	0.024	0.1133	0.2545	0.6092	0.0148	0.0078		0.0277	0.9723		0.0308	0.0089	0.0214	0.48	0.472	0.997	104.4	37.82	38.3	51.6	11.9	63.01	35.64	182	219	0.07	15.2	832.97	0.531	0.888	0.0374	0.0007			0.0038					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station.	Velocity area station, main channel 34m wide, cableway span approx. 40m. Straight channel.	A natural rock step downstream of road bridge forms control. Little weed growth. The river goes out of bank for bypassing well upstream. Bypassing begins at about 3.7m on right bank, but the rating accommodates this. Good rating established. Three peak flow ratings applied across period of record, the most recent applied since January 1980. Rating accounts for bypass flow and fits well to gaugings.	Historic augmentation from the Exe catchment at low flows is no longer applicable since late 2002. Some naturalised flow data available. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Large rural catchment. Drains Dartmoor granite in south, and Devonian shales and sandstones of Exmoor in north. Central area underlain mainly by Culm shales and Carboniferous sandstones. Agriculture conditioned by grade 3 and 4 soils. No major catchment changes.	Significant modification to flows owing to public water supply abstraction.
50002	Torridge at Torrington	663.0	SS4995518564	249955.0	118564.0	50°56'48.9552"N 4°08'14.2630"W	50.94693	-4.1373	Torridge	Torrington	13.9	EA-DC	SS51F004	50	1962-01-01		VA	187.0		9.6	true	true	true	true	false	false	true	true	true	true	true	false	true	SRPEI	1960-07-31	2023-09-30	15.803	0.12	1976-08-24	1976-08-24	338.0	1979-12-27	1979-12-27	0.924	3.35	7.349	40.4	59.8	0.39	23072	22404	97.105	1960-07-30		239.39	11.2	86.9	146.2	219.1	619.5	1206	1184	0.1388	0.258	0.5535	0.0215	0.0245	0.1311	0.3579	0.4815	0.021	0.0078		0.0316	0.9684		0.0396	0.0185	0.0413	0.49	0.425	0.996	81.1	40.52	39.8	52.7	12.4	75.1	42.27	160	356	0.06	17.7	664.25	0.742	0.935	0.0496	0.0013			0.0036			1961		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station built in 1960 and reconstructed in 1977.	Velocity area station on straight reach built in 1960. Main channel 28m wide, cableway span 57m.	Station reconstructed in 1977. Mobile bed. Low profile structure installed 2006 to mimic and stabilise natural bed control. Overtopping begins on left bank at about 3.3m. Well calibrated throughout range. Multiple ratings applied across period of record. Ratings since 1977 have identical top limbs. Well calibrated throughout range. No major changes to catchment.	Records prior to Oct 1962 unreliable.	Large, rural catchment draining coastal hills in the west and Dartmoor Granite in the south. Geology mostly Carboniferous shales and sandstones of the Culm. Moorland, rough grazing and generally low grade agricultural land.	Moderate modification to flows from Meldon Reservoir. Runoff also affected by abstraction for public water supply and industry/agriculture and effluent returns.
50003	Taw at Sticklepath	15.6	SX6335393831	263353.0	93831.0	50°43'40.7386"N 3°56'14.8718"W	50.72798	-3.93746	Taw	Sticklepath	218.6	EA-DC	SX69F051	50	1975-01-21		TPVA		1.4		true	false	false	false	false	false	false	false	false	false	false	false	false	PG	1975-01-21	2023-09-30	0.725	0.012	1976-08-23	1976-08-23	15.47	1979-12-27	1979-12-27	0.103	0.26	0.431	1.559	2.333	0.5	17785	12700	71.408				224.5	319.8	440.0	538.4	603.3	1741	1819	0.0637		0.4044	0.5264	0.0055	0.053	0.0033	0.4587	0.4849				1.0		0.1154	0.4563		0.46	0.492	1.0	126.6	34.18	54.6	75.8	13.1	10.56	5.39	434	345	0.27	225.8	15.41	0.526	0.88	0.0482	0.0			0.0015					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular thin-plate weir/velocity-area station on the River Taw in the Dartmoor National Park.		Rectangular thin-plate weir/velocity-area station with ratings derived by current metering. Gauged to 18 cumecs.	Reopened in 1995, previously gauged daily flow data for 1975-81 only.	Small steep catchment draining north Dartmoor. Granite geology with small area of carboniferous slates. Land-use is primarily moorland, some pasture and woodland in lower catchment.	Flows affected by public water supply abstractions and groundwater abstractions/recharge.
50005	West Okement at Vellake	13.3	SX5567690326	255676.0	90326.0	50°41'40.6534"N 4°02'41.2562"W	50.69463	-4.04479	West Okement	Vellake	286.4	EA-DC	SX59F005	50	1975-01-01		MIS	9.5		12.0	true	false	false	false	false	false	false	false	false	false	false	false	false	P	1974-04-18	2023-09-30	0.74	0.001	1981-07-08	1981-07-08	16.5	1979-12-27	1979-12-27	0.091	0.182	0.352	1.79	2.84	0.32	18063	17865	98.904				285.4	426.2	513.0	564.7	619.5	2198	2065	0.0284	0.001	0.4451	0.5254		0.0054	0.0005	0.5422	0.4519				1.0			0.5908		0.49	0.349	0.981	161.3	49.37	64.1	89.1	13.9	10.01	4.97	502	295	0.2	292.2	13.39	0.223	0.737	0.0142	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular thin plate weir at remote Dartmoor site.	Rectangular thin plate weir flanked by compound broad-crested weirs under a bridge. Crest length approx. 7.5m. Removed from peak flows dataset in February 2018 (WINFAP Files v6).	Bankfull level at 1.1m; large floods bypass station. One rating applied across period of record. Lack of suitable metering sites means check gauging is difficult and rating cannot be validated.	Flows above 0.6 cumecs are above the limit of the rating and should be treated with caution.	Catchment drains northwards from the highest area of Dartmoor, wholly on granite. Channel is wide, meandering and rocky. Moorland catchment. No major catchment changes.	Low flows dominated by Prewley Water Treatment Works' abstraction upstream.
50006	Mole at Woodleigh	327.5	SS6601121039	266011.0	121039.0	50°58'23.2833"N 3°54'35.2461"W	50.97313	-3.90979	Mole	Woodleigh	47.9	EA-DC	SS62F002	50	1965-01-01		VA	90.0		10.0	true	true	true	true	false	false	false	true	false	false	false	false	false	SRPE	1965-01-11	2023-09-30	9.022	0.197	1976-08-27	1976-08-27	164.0	2012-12-22	2012-12-22	0.866	2.65	5.02	22.1	29.8	0.47	21447	21447	100.0	1965-01-11		119.958	48.7	112.6	200.6	330.2	490.5	1359	1306	0.1222	0.1454	0.6949	0.0162	0.019	0.104	0.0978	0.7807	0.0085	0.0089		0.0122	0.9878		0.0405		0.0067	0.54	0.502	0.999	124.9	36.85	42.3	55.3	12.1	33.19	19.53	210	216	0.17	49.2	327.0	0.429	0.805	0.0316	0.001			0.0035			1964		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station built in 1965 with cableway.	Velocity area station built in 1965 with cableway, rock ledges/gravel shoals as controls.	Gauging by wading at low flows and off remote bridges at higher flows until 11/2001 when a cableway was built. Straight reach, affected by weed growth. Goes out of bank on left bank. Bypassing occurs. One rating applied across period of record. Gauged above bank full with good fit to rating.		Fairly responsive catchment of moderate relief descending from Exmoor through incised, forested valleys. Geology of sandstones and shales; Devonian in headwaters, Carboniferous lower down. Land-use is predominantly rural with grazing and low grade agriculture. No major catchment changes.	Reservoir(s) in catchment have minor effect on flows. Low flows moderately affected by public water supply abstraction and augmentation from Exe-Taw transfers. Some effluent returns.
50007	Taw at Taw Bridge	71.4	SS6729306820	267293.0	106820.0	50°50'44.2979"N 3°53'10.9209"W	50.84564	-3.88637	Taw	Taw Bridge	84.5	EA-DC	SS60F015	50	1973-01-01		FVVA	90.0		11.5	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1973-11-12	2023-09-30	1.842	0.018	1976-08-23	1976-08-23	42.5	2000-10-29	2000-10-29	0.178	0.487	0.922	4.49	6.67	0.46	18220	18193	99.852	1973-11-12		38.833	85.3	127.4	180.4	453.2	603.3	1229	1225	0.104	0.2761	0.4769	0.1183	0.0246	0.0997	0.3706	0.4087	0.1119	0.0086		0.0859	0.9141		0.0791	0.1024	0.0107	0.46	0.49	0.994	95.4	35.05	41.1	57.1	12.2	28.52	13.51	234	16	0.21	85.3	72.23	0.56	0.898	0.0462	0.0011			0.0056	0.596	0.83	1987		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir built in 1998 to replace previous station built in 1973.	Station built in 1973 with a natural, unstable, bed control. A Flat V weir was constructed to replace this in 1998 - crest length approximately 15m wide.	Station is bypassed by highest flows. Multiple ratings applied across period of record, the most recent is valid from 10/1998 when weir installation necessitated a rating change. Ratings fit well to corresponding gaugings. A series of peak flow ratings represent the general conditions at high flows: - Rating 6 from the start of the stage record and the high flow event on 24/12/1989 - Rating 10 from the winter of 1989 (24/12/1989) up to the changes caused by bank modification works in 1995 - Rating 12 from the completion of bank works in 1995 (25/04/1995) up to the completion of weir construction on 23/10/1998 - Rating 14 V2 from the construction of the weir in 10/1998 to the present. Includes modelled upper segments Some disagreement between pre- and post-weir rating at high flows causes higher AMAX values in latter part of the record. Re-rated in 2009 to account for changes to the natural control in the period before the weir construction (significantly decreasing medium and low flows), and shoaling afterwards (decreasing low flows). The top segments of the pre-weir ratings have been fitted to four difficult gaugings taken during an event in 11/1986 - so comparatively low accuracy, and donot allow for subsequent channel changes.	Suspect data 01/09/1998 to 30/11/1998 during weir construction and commissioning. 10/2000 peak flow considered significantly overestimated. Water abstractions at Taw Marsh, Dartmoor, ceased around 1999. Before this, low flows would have been affected. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Flashy regime. Catchment drains Dartmoor (Granite) in the south and is underlain mainly by Culm Shales and Carboniferous sandstones centrally. Mainly rural catchment. No major changes to catchment.	Runoff natural to within 10% at Q95. Water abstractions at Taw Marsh, Dartmoor ceased around 1999. Before this date low flows would have been affected. Cheese factory at North Taw bridge abstracts from borehole but also compensates into river at low flow.
50008	Lew at Gribbleford Bridge	71.1	SS5277001392	252770.0	101392.0	50°47'36.0363"N 4°05'25.2060"W	50.79334	-4.09034	Lew	Gribbleford Bridge	81.3	EA-DC	SS50F007	50	1988-01-01		FVVA	50.0			true	true	false	true	false	false	false	true	false	false	false	false	false	N	1988-02-22	2023-09-30	1.684	0.0	1995-08-04	1996-09-19	36.5	2009-02-09	2009-02-09	0.046	0.286	0.666	4.47	6.76	0.33	13005	13005	100.0	1988-02-22		51.606	80.9	122.1	172.4	236.9	286.4	1251	1192	0.1539	0.2134	0.6144	0.0005	0.017	0.1384	0.3587	0.489	0.0083	0.0044			1.0		0.0147			0.5	0.406	0.999	81.5	39.76	39.9	51.2	12.3	12.17	7.1	175	9	0.28	80.9	71.22	1.002	0.794	0.0439	0.0			0.0009			1987		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V control built in 2002 to replace previous informal Flat V control built in 1988.	Informal Flat V control built in 1988; 10.4m wide between high angle, trapezoidal gabion wing walls. Some erosion of weir crest. Station replaced by more formal Flat-V construction in 10/2002 at or about same location, with new weir, wing walls and datum. Station is on a gentle bend with reasonably straight approach. Cableway. Natural catchment but station was installed to monitor potential transfer from Roadford Reservoir.	Large floods inundate left bank, and very high flows will bypass station. No backwater effects. Multiple peak flow ratings applied across period of record, the most recent is valid from 10/2002 when weir was rebuilt.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Natural catchment of moderate relief draining Carboniferous Culm Measures (shales, limestones, sandstones). Wholly rural, moorland and rough grazing, minor forestry. No major changes to catchment.	Runoff natural to within 10%.
50009	Lew at Norley Bridge	20.2	SX50069991	250060.0	99910.0	50°46'45.5896"N 4°07'41.3495"W	50.77933	-4.12815	Lew	Norley Bridge	103.0	EA-DC	SX59F053	50	1988-01-01		FV+VA	18.0			true	true	false	true	false	false	false	true	false	false	false	false	false	N	1988-09-21	2023-09-30	0.514	0.0	2006-09-22	2006-09-25	13.2	2009-02-09	2009-02-09	0.021	0.096	0.216	1.28	2.022	0.35	12793	12789	99.969	1988-09-21	2020-10-01	18.416	103.1	134.2	172.7	234.3	277.6	1242	1196	0.0886	0.2478	0.6509		0.0127	0.0892	0.3606	0.5378	0.0059	0.006			1.0					0.5	0.446	1.0	77.2	37.71	38.7	49.8	12.2	8.43	4.33	178	15	0.37	103.3	20.05	0.275	0.792	0.0227	0.0001			0.0014			1987		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Informal Flat V low flow control built in 1988 to monitor potential transfer from Roadford Reservoir.	Informal Flat V low flow control built in summer 1988; 6.7m wide between high angle, trapezoidal gabion wing walls. Velocity area at higher flows. Station installed to monitor potential transfer from Roadford Reservoir. Peak flow data no longer being updated until more gaugings can be taken to verify rating curve.	Gauging is by wading at low flows, off the upstream bridge at high flows. Bypassing occurs. One peak flow rating applied across period of record. Reasonable fit to available gaugings.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Responsive, natural catchment of moderate relief draining Carboniferous Culm Measures (shale, limestone, sandstone). Wholly rural, rough grazing, low grade agriculture and a little forestry. No major changes to catchment.	Runoff natural to within 10% at Q95.
50010	Torridge at Rockhay Bridge	257.8	SS5067206976	250672.0	106976.0	50°50'34.7500"N 4°07'20.4790"W	50.84299	-4.12236	Torridge	Rockhay Bridge	61.0	EA-DC	SS50F060	50	1988-01-01		VA	74.5		11.9	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1988-09-21	2023-09-30	7.069	0.072	2022-09-01	2022-09-01	110.1	1998-10-31	1998-10-31	0.338	1.374	3.001	18.66	27.32	0.36	12793	12793	100.0				62.8	107.8	153.3	190.7	231.5	1235	1231	0.1294	0.3098	0.5328	0.0007	0.0263	0.1321	0.4152	0.4403	0.008	0.004			1.0				0.0423	0.49	0.399	0.997	65.4	42.51	40.2	53.1	12.6	42.19	23.1	151	131	0.06	63.4	258.43	0.66	0.894	0.0487	0.0016			0.0026					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Informal Flat V low flow control built in 1988 to monitor potential transfer from Roadford Reservoir.	Informal Flat V low flow control built in 1988 between high angle, 12.8m wide, trapezoidal gabion wing walls. Sited on a bend. Gauging was from an iron footbridge upstream but cableway installed in 1995. Station installed to monitor potential transfer from Roadford Reservoir. Removed from peak flows dataset in February 2018 (WINFAP Files v6).	Large flows inundate wide flood plain upstream of the bridge. Relatively large bypassing (>50% of the flow). One rating applied across period of record. Poor fit to gaugings beyond 1.5m.		Moderate relief catchment, natural, wholly rural, draining Culm Measures (shales and sandstones). Close to North Devon Coast. Land use is mostly grazing, low grade agriculture and minor forestry. No major changes to catchment.	Runoff natural to within 10% at Q95.
50011	Okement at Jacobstowe	82.1	SS5918501918	259185.0	101918.0	50°47'58.7969"N 3°59'58.4820"W	50.79967	-3.99958	Okement	Jacobstowe	90.0	EA-DC	SS50F042	50	1973-11-02		FV+VA				true	true	false	true	false	false	false	true	false	false	false	false	false	SRP	1973-11-02	2023-09-30	2.662	0.092	1976-08-23	1976-08-23	87.4	1979-12-27	1979-12-27	0.36	0.75	1.36	6.188	9.09	0.46	18230	14603	80.104	1973-11-02		59.565	84.1	139.3	290.9	527.0	619.5	1562	1510	0.1317	0.1044	0.5488	0.1728	0.0356	0.1181	0.1872	0.5444	0.1228	0.0248		0.0163	0.9837		0.0431	0.1535		0.48	0.478	0.981	130.0	37.61	49.8	68.4	13.0	26.29	12.64	316	357	0.26	84.3	80.17	0.435	0.805	0.0298	0.0047			0.0091	0.764	0.748			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Round-nosed broad-crested flat V weir with cableway constructed in 1991 to replace previous station built in 1973.	Round-nosed broad-crested flat V weir with cableway constructed in 1991 (station reopened on 11/09/91). Velocity area at higher flows. Previously a natural bed control 2/11/73-6/10/81 (before station closure).	Channel at the station approximately 17m wide. No bypassing. Re-rating carried out for the new weir in 1991, and again in 2011 to account for significant erosion of the middle part of the weir following high flows in 2000. Two peak flow ratings applied across period of record, the more recent is valid from 10/2000. Rating fits well to gaugings up to QMED.	Flows after the 31/12/1979 flood (01/01/1980) up to the station closure on 06/10/1981 have been removed from the archive as they are not representative. There was shoaling around the natural control (including embedded tree debris) and significant erosion to the banks (with a landslip on the left-hand bank in March 1981). Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Mixed geology, mostly Carboniferous (shale, sandstone) with some areas of Permian (Knowle Sandstones) and alluvium. Land-use is mostly rural, moorland in headwaters. Some urbanisation in the catchment (Okehampton).	Meldon Reservoir constructed upstream in the early 1970s which partially controls the flows since. Flows also affected by regular releases for hydropower generation increasingly noticeable from 2007.
50012	Yeo at Veraby	53.7	SS7743026655	277430.0	126655.0	51°01'34.1645"N 3°44'56.8723"W	51.02616	-3.74913	Yeo	Veraby	110.0	EA-DC	SS72F024	50	1968-01-01	2019-10-30	VA	25.0		12.2	true	false	false	false	false	false	false	false	false	true	false	false	true	R	1968-10-01	2019-10-31	1.586	0.055	1976-08-20	1976-08-20	23.7	1981-03-09	1981-03-09	0.212	0.541	0.952	3.82	5.24	0.51	18658	17363	93.059				110.7	157.0	230.0	343.4	433.9	1375	1316	0.1369	0.0719	0.7129	0.0699	0.0082	0.1068	0.039	0.8346	0.0152	0.0043		0.0002	0.9998		0.0127			0.54	0.461	1.0	127.2	38.28	43.8	57.1	11.9	14.23	8.17	239	209	0.21	110.7	53.95	0.435	0.753	0.0377	0.0			0.0006					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station built in 1968 with a natural bed control.	Velocity area station built in 1968 with a natural bed control. Some loose stone so susceptible to change. Removed from peak flows dataset in February 2018 (WINFAP Files v6). Station closed 30/10/2019 for operational reasons.	Minimal bypassing occurs. Trees alongside the river. Some out-of-bank flow, especially on right bank upstream of bridge, but all contained at station. One rating applied across period of record. Rating potentially underestimates flow beyond QMED.	Historic augmentation from the Exe catchment at low flows not applicable since end 2002.	Catchment drains Devonian shales and sandstones of Exmoor and is underlain by Carboniferous Culm Measures in the centre. Rural land use. No major changes in catchment.	Runoff natural to within 10% at Q95. Historically affected by Exe/Taw transfers.
50013	Bray at Leehamford Bridge	17.6	SS6772739915	267727.0	139915.0	51°08'35.4288"N 3°53'32.1694"W	51.14317	-3.89227	Bray	Leehamford Bridge	234.4	EA-DC	SS63F015	50	1979-10		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	SP	1979-10-30	2023-09-30	0.702	0.016	1984-09-05	1984-09-05	17.7	2012-12-22	2012-12-22	0.076	0.214	0.426	1.63	2.21	0.5	16042	16021	99.869				226.1	273.7	335.1	445.4	478.6	1742	1701	0.0567	0.0262	0.902	0.0134	0.0017	0.0324	0.0257	0.9309	0.01	0.001			1.0					0.54	0.501	0.99	132.1	38.7	52.6	68.4	13.3	6.1	3.36	345	226	0.29	226.1	18.02	0.165	0.613	0.0123	0.0			0.0001					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir installed as a residual flow gauge for the intake immediately upstream of the structure.		Flat V Crump profile weir 3m wide within 1.1m high wing walls. Approach d/s of a road bridge. Residual flow gauge for the associated Leehamford WTW whose intake is immediately u/s of the structure.		High relief, steep, very flashy catchment draining Devonian sandstones and shales of the western edge of Exmoor. Moorland and rough grazing.	Low to medium flow regime dominated by the WTW abstraction and Challacombe Reservoir in the headwaters.
50014	Yeo at Collard Bridge	79.6	SS59533562	259530.0	135620.0	51°06'09.4444"N 4°00'27.7155"W	51.10262	-4.0077	Yeo	Collard Bridge		EA-DC	SS53F044	50	1995-09		FV				true	true	false	true	false	false	false	false	false	false	false	false	false		1995-09-07	2023-09-30	2.491	0.094	1995-09-09	1995-09-09	36.1	2012-12-22	2012-12-22	0.293	0.841	1.47	5.94	8.22	0.55	10251	10251	100.0	1968-06-01		19.137	31.0	130.0	208.1	279.7	361.6	1462	1342	0.1135	0.1182	0.7474	0.001	0.0168	0.1064	0.1108	0.7717	0.0036	0.0063			1.0					0.5	0.575	0.973	134.3	32.7	45.4	57.7	12.6	16.32	8.84	204	240	0.2	30.4	78.06	0.143	0.783	0.0113	0.0002			0.0044					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with Flat V (truncated) triangular profile weir operational from 2007. Flow regime influenced by a few abstractions upstream.	Station constructed at Yeotown in 1968 as a velocity area station with a natural bed control. In 01/1996 the original station was replaced by Collard Bridge for health and safety reasons. Collard Bridge is a velocity area station with a natural rock bed control, 400m upstream of the original (Yeotown) station. The two records are treated as a continuous record due to the small difference in the catchment area between the two sites. New Flat V (truncated) triangular profile weir operational from 10/2007; velocity-area rating used.	A bridge 100m upstream is used for measuring high flows. May be bypassed. Bankfull stage at 1.5m. Multiple ratings applied across period of record.		The catchment area is characterized as natural with no urbanisation, and no flood attenuation structures. The catchment is underlain by permeable sandstones, slates and shales. Catchment soils are well-drained fine loamy or fine silty soils over rock, with some steep slopes, and boulders and rock locally. No major catchment changes.	Abstractions a few miles upstream. Wistlandpound Reservoir lies in the north-east of the catchment, but is insignificant compared to the total catchment area and has minimal influence on river flows at the station.
51001	Doniford Stream at Swill Bridge	75.8	ST0884842865	308848.0	142865.0	51°10'39.8203"N 3°18'19.3629"W	51.17773	-3.30538	Doniford Stream	Swill Bridge	9.3	EA-WX	510910	51	1966-01-01		FV	68.0		18.0	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1967-01-01	2023-09-30	1.046	0.081	1976-08-27	1976-08-27	32.4	1979-12-27	1979-12-27	0.193	0.381	0.647	2.34	3.27	0.66	20727	20642	99.59	1967-01-01		12.795	11.1	48.5	126.8	283.3	391.6	978	911	0.1518	0.389	0.4029	0.0123	0.0435	0.1299	0.3286	0.4933	0.0265	0.0203	0.0962	0.2754	0.4089	0.2183	0.1468		0.0086	0.35	0.629	0.988	129.9	27.63	37.4	48.5	11.4	15.38	9.03	145	1	0.14	11.1	74.23	0.354	0.516	0.0382	0.0077	0.569	0.573	0.0105	0.678	0.532	1978..1985		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with Flat V weir for low flows.	Opened in 1967 as velocity-area station with rock control. Flat V weir installed in August 1983 for low flows. New weir installed in 2018, with eel pass.	Rated section at high flows. High flows measured from a gauging bridge constructed upstream of the weir. No problems with backing up from the bridge. Gauged to 13 cumecs. Comparison with nearby stations suggest pre-83 flows are underestimated. Two peak flow ratings across period of record, derived from a best fit through check gaugings; changes when weir was installed in 1983.	Flow data unavailable 1982-83 due to stilling well leak. Flow data unavailable 1/08/83-31/3/84. Between 01/1967-12/1982 only daily mean flows available on EA archive. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Catchment drains Devonian/Triassic sandstones between Quantock and Brendon Hills. Rapidly responsive catchment. Land-use is mostly rural with some urbanisation. No major changes in catchment.	Runoff natural to within 10% at Q95. Some abstraction upstream for fish farming but flows not affected.
51002	Horner Water at West Luccombe	20.8	SS8984945826	289849.0	145826.0	51°12'03.5811"N 3°34'40.7341"W	51.20099	-3.57798	Horner Water	West Luccombe	61.0	EA-WX	510310	51	1973-01-01		C		6.4	57.5	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1973-04-01	2023-09-30	0.491	0.018	1976-08-23	1976-08-23	10.4	2013-01-26	2013-01-26	0.072	0.18	0.302	1.11	1.554	0.58	18445	16360	88.696	1973-04-01		10.793	55.2	200.0	356.4	455.8	516.8	1452	1485	0.3654	0.017	0.3724	0.2353	0.008	0.1968	0.0355	0.5189	0.2438	0.003	0.0024		0.9742	0.0234				0.54	0.539	0.978	213.9	29.75	50.9	68.4	12.5	12.14	6.3	341	25	0.29	55.2	20.38	0.038		0.0028	0.0			0.0001			1972		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir for low flows plus rated section at higher flows. Nutscale Reservoir in headwaters affects runoff.	Opened in 1973. Triangular profile Crump weir for low flows, crest 4.5m wide, plus rated section at higher flows. Station closed from September 1979 to April 1985, reopened with telemetry facilities.	Most flows contained, but some underflow may occur. Rating review carried out by the EA in 2010. A combination of theoretical rating for the weir and best-fit curve for medium and high flows now used. Validity of the curve beyond 0.8m is doubtful. Badly eroded weir repaired with stainless steel cap in the summer of 2016. Also, the downstream baffle has been modified to allow fish passage. One peak flow rating across period of record.	Between April 1973 and 1992 only daily mean flow available on EA archive. Data marked as suspect 9/5/16 - 18/5/16 & 7/9/16 due to works on the weir. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Geology of Mid Devonian Grits and Lower Devonian Old Red Sandstone. The topography in the upper reaches of the river is typically steep sided, wooded valleys, draining Exmoor. Land-use is rural. No major changes in catchment.	A small reservoir (Nutscale Reservoir) in headwaters affects runoff, especially with compensation flows in Summer.
51003	Washford at Beggearn Huish	36.3	ST0400839474	304008.0	139474.0	51°08'47.2263"N 3°22'25.2899"W	51.14645	-3.37369	Washford	Beggearn Huish	67.1	EA-WX	510810	51	1966-01-01		FV			18.6	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1966-11-01	2023-09-30	0.883	0.026	1978-11-25	1978-11-25	11.1	2012-04-30	2012-04-30	0.121	0.303	0.525	2.12	2.97	0.62	20788	19793	95.214	1966-11-01		6.12	54.2	128.7	255.7	369.7	422.4	1241	1151	0.2602	0.2336	0.4782	0.0044	0.0236	0.2673	0.1954	0.5195	0.0114	0.0064		0.0415	0.9585					0.38	0.588	0.982	194.4	31.4	43.9	59.7	11.8	12.13	6.84	252	37	0.2	54.9	36.7	0.058		0.0048	0.002			0.0028					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station constructed in 1966 with flat V fibreglass weir installed in 1982. Drains Brendon Hills in a predominantly rural catchment.	Opened in 1966 as a velocity-area station. Flat V fibreglass weir, 4.5m crest, installed in 1982.	It is likely that out of bank flow occurs before bankfull reached at station. Rated section at high flows. Two ratings applied across period of record, the most recent is valid from 11/1982 when weir installed. Good fit to gaugings. Works done 2015/16 due to d/s erosion, no impact on weir.	Station closed from 1/07/80 to 6/6/83 for weir construction. Between 01/1967 and 11/1973 only daily mean flows available on EA archive. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Drains Brendon Hills, relief is steep with many deeply incised valleys. Geology - Devonian Slates, Siltstones and Sandstones. Land use predominantly rural - pasture with coniferous woodland on valley sides. No major catchment changes known.	Runoff natural to within 10% at Q95. Fish farm and mill upstream do not significantly affect daily mean flow.
52001	Axe at Wookey	18.2	ST5270445806	352704.0	145806.0	51°12'34.1659"N 2°40'42.3941"W	51.20949	-2.67844	Axe	Wookey	30.5	EA-WX	521210	52	1956-01-01		FL		4.2		true	false	false	false	false	false	false	true	false	false	false	false	false	I	1956-10-01	2023-09-30	0.555	0.048	2022-09-24	2022-09-24	5.965	2020-10-04	2020-10-04	0.129	0.273	0.413	1.119	1.45	0.7	24471	10865	44.399				28.3	41.8	160.2	261.1	284.6	935	969	0.0957	0.3129	0.4786		0.1004	0.1179	0.2828	0.5448	0.0009	0.0537		0.6183	0.0185	0.3632				0.37	0.694	1.0	94.9	15.34	36.0	49.1	10.9	6.74	3.5	157	208	0.46	28.3	11.7	0.379	0.835	0.0617	0.0136	0.647	0.461	0.0359	0.737	0.494			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flume gauge on the River Axe installed to measure medium and low flows.	Also known as Henley, owned by Bristol water.	Flume gauge installed to measure medium and low flows. Data from 50s/60s considered bad. Leaking sluice gate, 0.8-0.9m goes over the top of gate.	Data from 1956-1968. Reopened on 01/06/1994 at same site.	Axe rises as underground river from cave at Wookey Hole. Geology includes measures of Old Red Sandstone, Carboniferous Limestone and Triassic conglomerates. Complex structure with numerous springs and swallows due to fissured limestones with impermeable beds. Catchment area probably underestimated: northern and western limits of topographic catchment approximate to the underground catchment but the eastern limit of the latter likely to lie considerably farther east than the former. Land use is rural.	Abstraction and discharge u/s for mirror pool and paper mill.
52002	Yeo at Sutton Bingham Reservoir	30.3	ST5565311646	355653.0	111646.0	50°54'09.2690"N 2°37'55.3167"W	50.90257	-2.63203	Yeo	Sutton Bingham Reservoir	41.5	EA-WX		52	1955-01-01	1968-12-31	MIS		10.5		true	false	false	false	false	false	false	false	false	false	false	false	false		1956-10-01	1968-08-31	0.397	0.025	1957-07-01	1967-06-01	17.08	1959-01-20	1959-01-20	0.025	0.028	0.04	1.28	1.948	0.19	4353	4353	100.0				43.4	66.6	100.9	175.4	252.9	974	953	0.1161	0.3423	0.505	0.005	0.0171	0.0939	0.2827	0.5999	0.0007	0.0077	0.8915	0.1085				0.0234	0.0586	0.38	0.446	0.862	83.6	42.83	42.6	51.9	11.6	11.57	6.69	112	30	0.29	43.4	30.19	0.275	0.833	0.0279	0.0007			0.0025					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Concrete flume, equipped with ultrasonic level recorder, located immediately downstream of Sutton Bingham Reservoir spillway. Station re-opened in 2003.		Concrete flume, equipped with ultrasonic level recorder, located immediately downstream of Sutton Bingham Reservoir spillway.	Station re-opened in 2003, having been closed since September 1968.
52003	Halsewater at Halsewater	87.8	ST2064725236	320647.0	125236.0	51°01'15.5976"N 3°07'57.8722"W	51.021	-3.13274	Halsewater	Halsewater	16.8	EA-WX	520580	52	1961-01-01		FV	7.0		12.6	true	true	false	true	false	false	false	true	false	true	false	false	true	N	1961-12-01	2023-09-30	1.137	0.127	1976-07-23	1976-08-23	16.32	1978-02-23	1978-02-23	0.275	0.503	0.762	2.37	3.28	0.71	22584	22544	99.823	1961-11-01		12.145	18.6	38.7	97.6	182.9	391.8	886	851	0.079	0.4468	0.4058	0.0018	0.06	0.0722	0.4146	0.4732	0.0053	0.0335	0.2994	0.1668	0.2313	0.3025	0.101		0.0002	0.35	0.625	0.991	80.1	30.52	35.8	47.1	11.2	19.81	9.85	105	156	0.29	18.6	88.31	0.577	0.523	0.0673	0.0056	0.701	0.567	0.015	0.707	0.585	1976..1977		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V fibreglass weir built in 1981 to replace previous rated section. Station is part of the flood warning system for Taunton.	Station opened in 1961 as a rated section with an unstable bed. Flat V fibreglass weir (for low flows), 6.0m wide, built in 08/1981. Located 0.5km upstream of confluence with River Tone. Road bridge 40m d/s. Station is part of the flood warning system for Taunton.	Flows >7 cumecs result in out of bank flow approx. 180m upstream of station and bypassing occurs. Above 18.7mAOD flows are affected by backwater from the River Tone. One rating applied across period of record despite control change in 1981. Rating is a combination of theoretical rating for the weir and best-fit curve for medium and high flows.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Catchment of mixed geology - predominantly Jurassic limestone, sandstone and marl, with headwaters in Brendon Hills. Impermeable rock and steep sloping upper catchment result in rapid response to rainfall. Land use: mainly rural -agriculture. No major changes in catchment.	Runoff natural to within 10% at Q95. No significant abstractions or discharges. Flood attenuation reservoir constructed at Norton Fitzwarren, approximately 2 km upstream, commissioned 12/2007.
52004	Isle at Ashford Mill	90.1	ST3605418785	336054.0	118785.0	50°57'53.7154"N 2°54'43.1067"W	50.96492	-2.91197	Isle	Ashford Mill	14.6	EA-WX	520110	52	1962-01-01		C VA	33.0	2.5	22.5	true	true	true	true	false	false	false	true	true	false	false	false	false	GE	1962-10-01	2023-09-30	1.397	0.097	1964-06-28	1964-06-28	30.7	1979-12-27	1979-12-27	0.303	0.505	0.758	3.1	4.73	0.5	22280	22279	99.996	1962-09-17		35.408	16.0	29.9	82.7	179.1	277.8	941	891	0.0722	0.4151	0.4381		0.069	0.0501	0.5004	0.3891	0.0015	0.0558	0.0311	0.2008	0.7681		0.0822	0.0221	0.0475	0.4	0.499	0.979	64.5	39.76	39.1	51.2	11.4	17.88	10.39	93	31	0.26	16.0	87.41	0.705	0.589	0.0837	0.0101	0.789	1.144	0.0264	0.796	1.09	1989..1991	1989-12-05..1991-12-04	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir for low flows with velocity area section for higher flows further downstream. Site subject to vandalism.	Crump profile weir for low flows, crest 6.71m broad, located approximately 300m upstream of Ashford Mill House. Velocity area station for higher flows downstream. Site subject to vandalism.	Modular limit of 0.6m. Downstream weed growth affects the stability of the stage-discharge relationship. Bypassing of station at high flows; extensive floodplain storage occurs next to the station before bankfull reached. Rating reviewed by EA in 2016. Peak flow rating curve is a combination of theoretical for weir and best-fit curve for medium and high flows. Scatter in gaugings at high flows although general shape of rating confirmed. Modelled top segment for out of bank flows.	Peak flows between 1989 and 1991 are marked as rejected pending a rating review. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Very responsive, impermeable catchment, predominantly comprising of Lower Lias clays. Land use is rural. No major catchment changes.	Flows influenced by minor groundwater abstraction, but augmented by effluent returns; evidence of mill/factory discharges on charts.
52005	Tone at Bishops Hull	202.0	ST2057625023	320576.0	125023.0	51°01'08.6684"N 3°08'01.3475"W	51.01907	-3.13371	Tone	Bishops Hull	16.6	EA-WX	520560	52	1961-01-01		C VA		130.0	17.7	true	true	true	true	false	true	false	true	true	true	true	true	true	SP	1961-02-01	2023-09-30	3.014	0.178	1976-08-22	1976-08-22	48.1	2012-04-30	2012-04-30	0.58	1.12	1.8	6.77	9.603	0.59	22887	22887	100.0	1961-01-01		43.736	17.7	46.9	120.3	280.6	573.4	990	964	0.1009	0.3364	0.4945	0.0029	0.0588	0.0894	0.3003	0.5657	0.0058	0.0356	0.1623	0.1779	0.349	0.3108	0.0157	0.0018	0.0674	0.36	0.562	0.977	97.4	32.9	36.2	48.8	11.1	40.94	18.33	144	69	0.17	17.8	203.66	0.524	0.54	0.0538	0.0068	0.833	0.652	0.016	0.762	0.653	1960		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir built in 1968 to replace previous rated section. Compensation flow from Clatworthy and smaller Luxhay Reservoirs in the headwaters maintain low flows.	Located west of Taunton, the station is important for the town's flood warning. Opened in 1961 as a rated section with cableway and with an unstable bed, 50 m upstream of a road bridge. Crump profile weir built in 1968 (breadth 12.2m). Original crest tapping now removed.	Full range station. Out-of-bank flow first occurs before bankfull; during extreme events weir is drowned by backwater from downstream bridge, causing floodplain inundation. Rating reviewed and extended in 2010. First limb derived from theoretical table for weir, second & third from current meter gauging (covers range from weir modular limit to approximately bankfull) and fourth from hydraulic modelling for out of bank flows. Station is very insensitive at low flow due to weed growth and plans in place to make it a compound weir. Two peak flow ratings across the period of record, pre- and post- weir installation.	As a velocity-area station up to 03/1968 flows were unreliable below 1.42 cumecs. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Fairly responsive catchment draining from Brendon Hills, predominantly comprises sandstones in the upper- and clays in the lower-catchment. Land use is rural. No major catchment changes.	Minor surface water abstractions for public water supply; also abstraction for agriculture. Compensation flow from Clatworthy and smaller Luxhay Reservoirs in the headwaters maintain low flows but neither reservoir is large enough to influence the catchment's fairly rapid response to rainfall.
52006	Yeo at Pen Mill	213.1	ST5732816182	357328.0	116182.0	50°56'36.5580"N 2°36'31.4851"W	50.94349	-2.60875	Yeo	Pen Mill	23.9	EA-WX	520240	52	1963-11-01		C VA	40.0	1.5	14.1	true	true	false	true	false	false	false	true	false	false	false	false	false	SPG	1963-10-31	2023-09-30	2.547	0.047	1971-11-06	1971-11-06	112.8	1966-11-05	1966-11-05	0.335	0.628	1.111	6.261	9.608	0.42	21885	21885	100.0	1962-06-01		49.916	26.5	50.4	89.0	149.8	264.6	904	865	0.1016	0.4605	0.3564	0.0103	0.0598	0.0832	0.3538	0.4914	0.0008	0.0671	0.7046	0.1306	0.1648		0.012	0.0035	0.0468	0.38	0.569	0.965	63.5	34.28	37.6	46.9	11.2	29.78	14.54	95	55	0.07	26.5	216.4	0.59	0.879	0.0723	0.0201	0.716	0.622	0.0287	0.795	0.504	1961		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir for low flows, set within trapezoidal concrete flanks and topped with the natural banks, becomes velocity-area station at high flows. Sutton Bingham Reservoir in headwaters.	Station was installed in November 1963 and is located next to a sewage treatment works. Crump profile weir for low flows, set within trapezoidal concrete flanks and topped with the natural banks, becomes velocity-area station at high flows. Station moved slightly in 1989, due to stilling-well problems; bank repairs undertaken in 1997/98.	Two peak levels recorded before weir finished but flows can be calculated from rating as station becomes velocity area at high flows. Velocity area station (affected by downstream weed growth) used to measure flows >1.55 m3/s. Flows >2m are less reliable. All but highest floods contained. Some out of bank events on right bank but modelled so these flows are included. Highest flows can be gauged at upstream bridge. Cableway cannot be used above 3.8 m, in which case road bridge is used, up to 4.25 m. Floodplain water does not flow appreciably, though may extend 200 m from river. Rating reviewed in Jan 2001. One rating applied across period of record. Bank repairs 1997/98 might have affected the rating and may influence cableway gaugings. Issues with silt build up.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Fairly responsive catchment with Oxford Clay and Great Oolite in the upper catchment, Yeovil Sands and Inferior Oolite in the lower catchment. Land use is predominantly rural. No major catchment changes.	Sutton Bingham Reservoir in headwaters. Abstraction for public water supply. Medium & low flows influenced by variable abstractions & compensation.
52007	Parrett at Chiselborough	74.8	ST4607014438	346070.0	114438.0	50°55'36.7019"N 2°46'07.3724"W	50.92686	-2.76871	Parrett	Chiselborough	20.7	EA-WX	520310	52	1966-01-01		C	11.6	7.5	29.5	true	true	false	true	false	false	false	true	false	false	false	false	false	E	1966-07-05	2023-09-30	1.185	0.065	1976-08-23	1976-08-23	47.72	1979-12-27	1979-12-27	0.181	0.326	0.521	2.854	5.075	0.43	20907	20907	100.0	1966-07-01		32.309	22.7	38.3	68.4	117.4	230.0	887	886	0.0905	0.3952	0.4537	0.0003	0.0563	0.0744	0.4269	0.4448	0.0027	0.0508	0.6683	0.314	0.0176				0.0422	0.38	0.537	1.0	68.5	36.84	41.8	51.3	11.6	14.29	7.48	73	12	0.21	22.7	74.26	0.564	0.806	0.0665	0.012	0.789	0.87	0.0237	0.709	0.877	1965..1984	1970-01-01..1985-01-17	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir with crest tapping, situated in bridge culvert. Rating has shifted over time due to tree and shrub growth downstream.	Station opened in 1966. Crump weir (breadth: 7.87m) with crest tapping, situated in bridge culvert.	Full range station. Rated section at high flows. Backwater effects outside of modular range. Tree and shrub growth downstream. Silty and weedy river. Throttling of high flows by bridge, and downstream bends act as control therefore flow hydrograph exhibits hysteresis. Weir drowning more frequent prior to downstream channel improvements in 1966. Rating has shifted over time due to tree and shrub growth downstream. The POR maximum flood occurred in 05/1979 - the exceptional peak flow of 173 cumecs is a result of a new rating, which is supported by modelling work (including floodplain flows) undertaken by Mott McDonald. Multiple ratings applied across period of record, the most recent is valid from 01/1990. Significant scatter exists in gaugings, possibly to due drowning.	Flows calculated from crest tapping prior to 1/4/67 are erroneous due to leak in float well. Various rejected years between 1970 and 1985 due to 15-min data being unavailable and the flow calculated from two stage values per day leading to uncertainties. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Fairly responsive catchment predominantly comprising Oxford Clay with small band of Upper Greensand and Gault in headwaters. Land use is predominantly rural. No major changes to catchment.	Balance between abstraction and discharge, so near natural.
52008	Tone at Clatworthy Reservoir	18.1	ST04433124	304430.0	131240.0	51°04'21.0102"N 3°21'55.7165"W	51.0725	-3.36548	Tone	Clatworthy Reservoir	196.7	EA-WX		52	1960-01-01	1968-12-31	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1960-10-01	1968-08-31	0.322	0.051	1967-06-21	1967-06-21	4.248	1960-10-27	1960-10-27	0.057	0.071	0.076	0.92	1.303	0.45	2892	2892	100.0				200.5	253.0	331.1	378.8	406.1	1271	1195	0.1313	0.0661	0.7669	0.0024	0.0075	0.1176	0.0401	0.8075	0.0056	0.0027			1.0					0.35	0.574	0.833	127.8	32.85	41.0	57.2	11.6	5.84	3.11	324	158	0.28	211.9	18.07	0.029		0.0028	0.0			0.0					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station on the River Tone composed of two thin plate and 1 broad crested weirs located 15m downstream of Clatsworthy Reservoir spillway.		Two thin plate and 1 broad crested weirs located 15m downstream of Clatsworthy Reservoir spillway.	Gauged daily flow record discontinued from September 1968.
52009	Sheppey at Fenny Castle	59.6	ST4983843850	349838.0	143850.0	51°11'29.9709"N 2°43'09.0961"W	51.19166	-2.71919	Sheppey	Fenny Castle	5.8	EA-WX	521010	52	1963-01-01		C VA	12.0	3.1	18.8	true	true	true	true	false	false	false	true	false	false	false	false	false	SGE	1964-01-01	2023-09-30	1.091	0.102	1964-09-13	1964-09-13	8.34	2008-07-09	2008-07-09	0.266	0.505	0.796	2.25	2.913	0.66	21823	21639	99.157	1964-01-01		7.618	6.9	27.3	155.8	239.7	304.6	955	974	0.0752	0.2773	0.5359		0.1063	0.0753	0.2883	0.5443	0.0048	0.0871	0.0261	0.2044	0.4531	0.3164	0.0194		0.0155	0.37	0.688	0.999	78.7	20.13	37.9	49.8	11.2	21.03	11.49	142	224	0.37	7.7	58.16	0.616	0.477	0.0634	0.0288	0.645	0.936	0.0529	0.796	0.976	1963..1965		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir for low flows and velocity-area station for higher flows. Avalon Lake scheme down stream of weir.	Station opened in 1964. Crump profile weir for low flows, crest 5.18m wide. Velocity area station for flows greater than 1.84 cumecs.	Full range station. All flows in bank at station but may go out of bank upstream before bankfull at site. Daily flow rating reviewed in 01/2011. Rating unconfirmed by gaugings at highest flows. Lower section is rating for theoretical weir. Reliable extension of rating to bankfull but no data to allow extension beyond this. One peak flow rating across period of record. Bed mounted ADCP for non-modular.	Downstream summer weed growth can affect modular limit. Water year 1965/1966 rejected due to the likely underestimation of true AMAX. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Mixed geology: Upper catchment - Carboniferous Limestone. Lower catchment - Sandstone. Land use predominantly agriculture. Pasture land on both sides of river. The upper catchment is sustained by limestone groundwater; therefore although the Somerset levels respond quickly to rainfall, there is a long recession as the limestone drains. No major catchment changes.	Avalon Lake downstream of weir now gone. Effluent returns cause some flow augmentation. Minor groundwater abstractions in catchment. More discharge than abstraction.
52010	Brue at Lovington	135.2	ST5899431756	358994.0	131756.0	51°05'01.1292"N 2°35'12.4784"W	51.08365	-2.5868	Brue	Lovington	19.8	EA-WX	520920	52	1964-01-01		C VA	80.0	5.6	21.9	true	true	true	true	false	true	true	true	true	true	true	true	true	SN	1964-10-01	2023-09-30	1.947	0.057	1964-10-01	1964-10-01	45.5	1979-05-30	1979-05-30	0.258	0.542	0.984	4.98	7.02	0.47	21549	21440	99.494	1964-10-01		37.478	23.1	40.2	105.6	169.1	262.7	881	866	0.0683	0.4166	0.4706	0.0033	0.0349	0.0503	0.351	0.5753	0.0007	0.0218	0.4332	0.1295	0.4373		0.078			0.37	0.527	0.997	71.3	36.27	34.0	44.2	10.7	23.83	14.35	104	217	0.16	23.0	137.87	0.63	0.61	0.0816	0.0066	0.482	0.81	0.0112	0.642	0.894			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir for low flows and rated section. Bruton Dam flood storage reservoir was built in catchment in 1983 after extensive flooding in the town.	Station is located west of Lovington and was opened in 1964. Crump profile weir for low flows, crest 6.71m broad, then rated section for flows > 2.2 cumecs.	Downstream summer weed growth affects the stability of the stage-discharge relationship. Issues with gravel accumulation u/s. Section is deep and contains all but extreme peaks. Lower section is rating for theoretical weir; reliable extension of rating to bankfull (3.9m stage) but no data to allow extension beyond this, although all but extreme peaks contained in deep section. Station rebuilt in 1998, no alteration to the section adjacent to the weir. Rating reviewed in 01/2001. One rating applied across period of record. Reliable extension of rating to bankfull but no data to allow extension beyond this. Reasonable fit to gaugings. POR maximum flow of 142 cumecs in 05/1979 is derived from the latest rating, but subject to considerable uncertainty owing to extrapolation.	No daily mean flows between 27/7/98 and 1/11/98. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Headwaters fed by Mendip and Salisbury Plain springs. Geology comprises Oxford Clay and Great Oolite in the upper catchment and Yeovil Sands and Inferior Oolite in the lower-catchment. Land use is predominantly rural with very little urbanisation.	Natural regime. Bruton Dam flood storage reservoir was built in 1983 after extensive flooding in the town in 1968, 1979 and 1982. It drains 21% of the catchment, much of it being the more upland and fast-responding areas.
52011	Cary at Somerton	82.4	ST4981429055	349814.0	129055.0	51°03'31.0668"N 2°43'02.8996"W	51.05863	-2.71747	Cary	Somerton	8.8	EA-WX	520810	52	1965-01-01		CCVA	10.0	4.4	38.0	true	true	false	true	false	false	false	true	false	true	false	false	true	GE	1965-09-01	2023-09-30	0.812	0.004	1976-08-23	1976-08-27	13.1	1966-11-06	1979-05-31	0.045	0.12	0.289	2.13	3.53	0.39	21214	21214	100.0	1965-09-01		8.952	9.1	18.2	32.4	66.8	152.2	755	715	0.0552	0.5531	0.2783	0.017	0.0784	0.0566	0.5526	0.3409	0.0032	0.0465	0.0048	0.0169	0.8678	0.1106	0.0545		0.143	0.37	0.532	1.0	30.2	37.89	31.1	40.3	10.5	25.12	11.75	38	215	0.09	9.1	84.64	1.479	1.03	0.2355	0.0127	0.521	0.663	0.0242	0.706	0.665	1964..1991	1965-09-01..1992-01-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir; velocity-area for flows greater than 4.4 cumecs. Weed growth downstream affects rating in summer.	Station opened in 1965. Compound Crump profile weir, approx. 330m upstream of Cary Bridge. Centre section 3.05m broad, two side sections 1.22m broad. Velocity area station for flows greater than 4.4 cumecs (downstream summer weed growth affects the stability of stage-discharge relationship). Truncated up and down stream.	Full range station, banks containing all but exceptional floods. Rating reviewed in 2011. Separate curve for the first two years after construction. Weed growth d/s affects rating in summer & high flows. No apparent bypassing. New curve derived from gaugings from 1992 allowing for drowning and in-channel vegetation growth.	Various rejected years between 1965 and 1992 due to 15-min data being unavailable and the flow calculated from two stage values per day leading to uncertainties. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Catchment predominantly of Lower Lias and Oolitic Limestone. Land use is rural with no large built up areas. No major catchment changes.	Minor groundwater abstractions & some augmentation from effluent returns. Overall more discharge than abstraction.
52014	Tone at Greenham	57.2	ST0784820279	307848.0	120279.0	50°58'28.2902"N 3°18'50.0951"W	50.97453	-3.31392	Tone	Greenham	77.1	EA-WX	520540	52	1966-01-01		FVVA	19.0		12.1	true	true	false	true	false	false	false	true	false	false	false	false	false	S	1967-02-01	2023-09-30	1.0	0.009	1975-10-07	1975-10-30	15.4	2012-04-30	2012-04-30	0.139	0.336	0.605	2.367	3.187	0.59	20696	20488	98.995	1966-06-01		13.982	76.7	136.5	236.4	355.0	406.1	1152	1100	0.1347	0.179	0.663	0.0016	0.0128	0.1262	0.0891	0.7705	0.0021	0.0038		0.1509	0.8491				0.0003	0.35	0.553	0.937	144.8	33.3	37.8	52.6	11.3	21.18	11.83	240	138	0.21	76.9	57.74	0.139	0.587	0.0115	0.0001			0.0015			1965..1983	1967-02-01..1984-01-10	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir to replace previous rated section. River bed contains silt and stones with weed visible.	The station is located 15 km west of Taunton and was opened in 1967 as a rated section with an unstable bed. Compound Flat V Crump profile weir, 8.06m wide, installed 08/1979. Small road bridge upstream of station.	River bed contains silt and stones, weed visible. At high flows estimates made from debris marks as surrounding land floods. Bankfull channel is 1.6m. Three ratings applied across period of record, the most recent is valid from 08/1979 after Crump weir installed. Some scatter in gaugings.	Early peak flow data rejected due to missing high resolution data preventing correct data extraction. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in September 2023 (WINFAP Files v12).	The upper part of the catchment drains the Brendon Hills. Geology is predominantly Old Red Sandstone. Land use is rural. Flat pasture land on right side of river. Sloping pasture land on left side. No major catchment changes.	Low flows maintained from Clatworthy Reservoir and this reservoir affects runoff. Abstractions for water supply.
52015	Land Yeo at Wraxall Bridge	23.3	ST4830171565	348301.0	171565.0	51°26'26.5436"N 2°44'42.7689"W	51.44071	-2.74521	Land Yeo	Wraxall Bridge	11.4	EA-WX	521510	52	1970-01-01		C	28.8	4.7	52.0	true	true	false	true	false	false	false	true	false	false	false	false	false	SI	1971-01-01	2023-09-30	0.286	0.004	1976-09-06	1976-09-07	6.715	2023-01-12	2023-01-12	0.056	0.111	0.173	0.609	0.822	0.67	19266	17156	89.048	1971-01-01		3.822	10.2	27.1	92.6	161.1	241.0	898	906	0.2141	0.2977	0.3711		0.0935	0.1608	0.3711	0.3842	0.0233	0.0519	0.0102	0.3722	0.1996	0.418	0.0249		0.0384	0.35	0.669	0.933	73.3	20.44	34.2	45.6	10.8	11.77	6.12	94	322	0.2	10.2	23.33	0.442	0.678	0.0579	0.0138	0.553	0.803	0.0167	0.741	0.714			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Triangular profile Crump weir, then rated section within wing walls. Barrow Gurney reservoirs in catchment.	Station opened in 1971. Triangular profile Crump weir, crest 5m wide, then rated section within wing walls.	All flows contained due to storage. River weedy but weir cleared regularly. Silty bed with pasture land on both sides of river. One rating applied across period of record. Rating confirmed by gaugings to 0.3 m; validity does not extend beyond 0.4 m, where reasonable extrapolation would end. Uncertain rating at high flows. Right angle bend u/s affects gaugings.	Closed from 09/1979 to 05/1985. Reopened following installation of telemetry. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Drains Dundry Hill. Moderate relief in headwaters, low relief in lower reaches. Mixed geology of Lower and Middle Coal Measures, Carboniferous Oolitic limestone and Triassic marls and sandstones. Land use predominantly rural and some urbanisation. No major catchment changes.	Barrow Gurney reservoirs in catchment (approx. 0.75 sq km). Some urbanisation. Some abstraction from u/s/ watercress farm.
52016	Currypool Stream at Currypool Farm	15.7	ST2214938193	322149.0	138193.0	51°08'15.6977"N 3°06'50.8581"W	51.13769	-3.11413	Currypool Stream	Currypool Farm	49.0	EA-WX	520710	52	1971-01-01		C VA			45.0	true	true	false	true	false	false	true	true	false	true	false	false	true	N	1971-06-01	2023-09-30	0.213	0.033	1976-08-26	1976-08-26	3.314	1979-12-27	1979-12-27	0.059	0.1	0.147	0.439	0.584	0.71	19115	19115	100.0	1971-06-01		2.561	50.4	74.2	172.4	307.0	382.6	970	934	0.4502	0.1657	0.336	0.0209	0.0232	0.4329	0.1883	0.3451	0.0244	0.0084			0.5489	0.4511	0.2145			0.35	0.586	1.0	133.6	29.2	36.6	48.2	11.5	9.14	4.86	181	63	0.45	50.9	15.73	0.399	0.442	0.0378	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir opened in 1971 with velocity area station for higher flows in a predominantly Old Red Sandstone and Marl catchment.	Station opened in 1971. Crump profile weir, crest 4m broad. Velocity area station for flows >1.654 cumecs. Flat pasture on both sides of the river.	Vegetated banks. Likely to go out of bank before bankfull at station. River bed silty and stony. Flood diversion channel just downstream of weir on left-hand bank - excess water channelled across field to prevent flooding downstream. Accretion of silt on right-hand side of weir. Highest flows exceed bankfull, gaugings needed to confirm rating in this range. Two ratings applied across period of record. Rating is acceptable to 0.4m, there have been no higher flow gaugings since the last review to be able to confirm the rating beyond low flows.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Catchment, predominantly of Old Red Sandstone and Marl, whose headwaters drain the Quantock Hills. Land use is agricultural. No major catchment changes.	Runoff natural to within 10% at Q95. Minor surface water abstraction.
52017	Congresbury Yeo at Iwood	66.6	ST4517463065	345174.0	163065.0	51°21'50.3655"N 2°47'19.9778"W	51.36399	-2.78888	Congresbury Yeo	Iwood	7.4	EA-WX	521410	52	1973-01-01		C		14.5	18.5	true	true	false	true	false	false	false	true	false	false	false	false	false	S	1973-06-01	2023-09-30	0.784	0.106	2022-07-27	2022-07-29	12.98	2023-01-12	2023-01-12	0.211	0.33	0.484	1.629	2.286	0.65	18384	14216	77.328	1966-04-01		9.01	8.9	25.2	80.9	246.9	323.6	963	982	0.1401	0.178	0.5874	0.0172	0.0488	0.1061	0.2975	0.5197	0.0111	0.0333		0.2633	0.0186	0.7181			0.0098	0.35	0.592	0.878	85.7	26.09	37.6	49.1	11.1	16.48	7.48	107	327	0.22	8.9	55.37	0.459	0.692	0.0593	0.0109	0.554	0.813	0.0147	0.658	0.743	1972..1979		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Large crump Weir 200m south of Iwood farm. Extensive out of bank flow.	Station located 200m south of Iwood Farm and was opened in 1966 as a rated section. Between 08/1971 and 03/1973 a Crump weir was installed, crest 5m broad. Flood warning station for Congresbury approx. 1km downstream.	Bankfull 1.3m, with bypassing at high flows and extensive out of bank flow on surrounding pasture during large events. Bypasses at high flows. Peak flow rating revised 2015. Theoretical rating extended beyond bankfull using modelled data. More gaugings needed to verify the rating curve for the middle and high flow ranges. In 2007, a bed mounted ADCP has been installed to improve resilience. In the summer of 2013, low cost fish passage baffles were installed on the front face of the weir and a vertical eel pass has been installed on the right bank wing wall. Hydropower added which has affected gauging. Out of bank modelling been done.	Station closed 02/1975 to 08/1985; reopened with telemetry facilities. Very patchy record before 1975. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	River rises from western slopes of the Mendips. Catchment geology comprises carboniferous limestone, Keuper Marl and estuarine alluvium. Land use is predominantly rural with some small settlements. No major changes to catchment.	Runoff reduced by public water supply abstraction. Blagdon reservoir (approx. 2 sq.km) situated in headwaters.
52020	Gallica Stream at Gallica Bridge	16.4	ST571100	357100.0	110000.0	50°53'16.3814"N 2°36'40.5430"W	50.88788	-2.61126	Gallica Stream	Gallica Bridge	56.0	EA-WX	520230	52	1966-01-01	1979-12-31	MIS	36.0		20.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1966-10-04	1978-12-31	0.251	0.0	1976-07-01	1976-08-28	8.506	1974-11-13	1974-11-13	0.009	0.04	0.08	0.574	0.98	0.26	4472	4204	94.007				52.0	78.4	111.6	174.4	222.7	1021	950	0.2603	0.4687	0.2381	0.0077	0.0163	0.2305	0.232	0.5279	0.0003	0.0068	0.7649	0.1006	0.1344					0.38	0.389	0.971	86.3	45.21	41.0	50.2	11.5	7.63	4.13	119	1	0.25	52.0	16.65	0.181	0.721	0.018	0.0			0.0014					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A hybrid weir beneath a bridge on the Gallica stream approximately 2.5km upstream of the confluence with the River Yeo.		Hybrid weir (v-notch/Crump) beneath a bridge, theoretically rated. Re-opened for flood modelling. Considered reliable over whole range. Works being done to remove silt.		Upper part of Yeo catchment, on oolitic limestone. Land use is rural.
52025	Hillfarrance Brook at Milverton	27.8	ST1132527009	311325.0	127009.0	51°02'08.0684"N 3°15'57.7841"W	51.03557	-3.26605	Hillfarrance Brook	Milverton	64.8	EA-WX	520550	52	1992-01-01		FV				true	true	false	true	false	false	false	true	false	false	false	false	false	E	1992-05-01	2023-09-30	0.523	0.065	2022-08-14	2022-08-14	6.98	2012-11-24	2012-11-24	0.11	0.207	0.344	1.155	1.577	0.67	11475	9679	84.349	1991-01-01		9.098	61.6	91.0	145.3	266.1	391.5	1008	1009	0.122	0.3335	0.4909		0.0512	0.1229	0.192	0.6583	0.0002	0.0266	0.0345	0.4129	0.5525				0.0751	0.35	0.633	0.996	135.5	28.61	36.7	50.4	11.1	10.61	5.21	163	100	0.28	61.8	27.75	0.227	0.59	0.023	0.0047			0.0141	0.748	0.87	1991		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir for low flow, with rated section for high flows. Designed by Flood Defence.	Station is located 2km north west of the village of Milverton and was opened in 1991 as part of the flood warning system for Taunton. Designed by Flood Defence. Flat V weir for low flow, with rated section for high flows.	Original rating was applied across period of record, based on theoretical flat V equation, altered because gaugings show lower than expected flows. Some scatter in gaugings and ratings are poor fit beyond 0.6m. Two peak flow ratings across period of record.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Catchment predominantly comprising Permo-Triassic and Carboniferous mudstone, siltstone and sandstone. Land-use is rural. No major catchment changes.	Sewage treatment works upstream of site, and pig processing factory (having stream support borehole) 100m upstream of that. Discharge from sewage works is greater than abstraction.
52026	Alham at Higher Alham	5.12	ST6793240970	367932.0	140970.0	51°10'01.4452"N 2°27'36.0859"W	51.16707	-2.46002	Alham	Higher Alham	109.3	EA-WX	520910	52	1982-06-01	2005-12-31	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1983-01-01	2005-12-31	0.148	0.013	1984-09-16	1984-09-24	1.089	1998-11-02	1998-11-02	0.031	0.058	0.106	0.32	0.397	0.74	8401	8143	96.929				107.1	137.9	171.8	193.8	213.4	1024	1006	0.0734	0.2581	0.6382		0.0303	0.0484	0.2533	0.6961	0.0022		0.989		0.011					0.37	0.61	1.0	89.6	30.54	37.3	48.6	11.1	3.06	1.49	167	180	0.26	107.1	4.89	0.03	1.613	0.0072	0.0			0.0041					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A standard Flat V weir on the River Alham installed to investigate the effects of quarrying on groundwater.		Standard Flat V weir, 2.5m wide, 1:10 cross-slope. Station opened in June 1982 to investigate the effects of quarrying on groundwater. Low flow control, structure drowns out at 0.3m.	Some flows in 1984 and 1986 suspect due to sticking chart recorder, flows in 1985 missing due to chart recorder failure; replaced at end of 1986.	Predominantly limestone geology. Land use is pasture.	Relatively high mean annual runoff suggests contributing area is greater than the topographic catchment area.
53001	Avon at Melksham	665.6	ST9029864102	390298.0	164102.0	51°22'33.1947"N 2°08'26.8002"W	51.37589	-2.14078	Avon	Melksham	30.0	EA-WX		53	1953-01-01	1980-12-31	VA			10.7	true	false	false	false	false	false	false	false	false	false	false	false	false	PGE	1953-10-01	1980-06-30	6.703	0.283	1955-08-14	1956-08-22	169.9	1968-07-11	1968-07-11	0.991	2.549	4.015	15.06	21.38	0.54	9770	9770	100.0				33.0	57.9	100.3	153.8	262.6	795	763	0.0851	0.3823	0.4624		0.0644	0.0577	0.4546	0.4375	0.0023	0.0465	0.4851	0.0879	0.3948	0.0322	0.0283		0.0376	0.34	0.552	0.99	33.9	32.56	33.0	42.1	10.3	68.62	39.21	103	118	0.11	33.0	668.3	0.854	0.902	0.12	0.018	0.661	0.751	0.0231	0.812	0.729			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station.	Velocity area station. Closed in 1980.	Cableway present.		Gaugings completed in 1975/76 (upon which the recent Flood Studies high flows are based) suggest that archived dmfs appreciably underestimate the true discharge.
53002	Semington Brook at Semington	157.7	ST9073760543	390737.0	160543.0	51°20'38.0167"N 2°08'03.7565"W	51.34389	-2.13438	Semington Brook	Semington	33.1	EA-WX	530950	53	1953-01-01		MIS			21.2	true	true	false	true	false	false	false	false	false	false	false	false	false	GE	1953-10-01	2023-09-30	1.429	0.065	1976-08-10	1976-08-10	24.0	2014-01-04	2014-01-04	0.34	0.6	0.853	2.848	4.51	0.61	25567	25564	99.988	1953-10-01		16.779	34.9	50.2	75.7	143.0	230.3	756	712	0.0929	0.3393	0.4621		0.076	0.0411	0.4569	0.4476	0.0008	0.0527	0.2077	0.3851	0.2577	0.1494			0.0095	0.34	0.564	0.987	48.0	33.01	30.3	40.1	10.2	24.34	13.18	89	317	0.1	34.9	153.34	0.704	0.785	0.1213	0.0261	0.627	1.142	0.0299	0.776	1.137	1967..2006	1968-07-01..2006-11-26	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Formalised trapezoidal section installed in 1970 to replace previous velocity-area station. Bed-mounted hydro-acoustic gauge installed in 2006.	Station located 3km upstream of the confluence with the River Avon in operation since 1947. Formalised trapezoidal section with a 6m wide non-standard weir and a cableway. Replaced downstream velocity-area station in 1970 (superseded due to low banks and backwater from the Avon at high flows). Bed-mounted hydro-acoustic gauge installed 09/2006.	Flow measurement is imprecise at medium to high flows. One rating applied across period of record. Station rated to 19.83 cumecs. There are significant errors in the rating curve at high flows due to backwater effects from the River Avon. ADCP installed but not matching peak stage timings due to velocities.	Flood records for period prior to 04/1970 (before installation of formalised trapezoidal section) are poor. Pre-2006 peak flows rejected because spot flows suggest high flows were underestimated prior to installation of the acoustics. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Catchment flat and low-lying, mainly clay with steeper Chalk eastern boundaries. Kimmeridge and Gault Clay producing fairly sharp response to rainfall. Land use is predominantly rural. No major catchment changes.	Flows influenced by some groundwater pumping & surface water abstractions. Mill operation and hydro-power upstream. Runoff increased by effluent returns.
53003	Avon at Bath St James	1595.0	ST751651	375100.0	165100.0	51°23'03.8208"N 2°21'33.1097"W	51.38439	-2.3592	Avon	Bath St James	17.1	EA-WX		53	1939-01-01	1969-12-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	PGE	1939-12-01	1969-09-30	20.466	0.283	1942-04-30	1942-04-30	300.2	1960-12-04	1960-12-04	2.124	9.008	14.16	45.31	59.47	0.63	10897	10226	93.842				17.8	53.2	104.6	174.1	304.6	840	818	0.1122	0.3371	0.461	0.0	0.0792	0.0737	0.4225	0.4424	0.0028	0.0568	0.4658	0.1261	0.3261	0.082	0.0201		0.0652	0.34	0.575	0.985	51.4	31.2	34.3	44.6	10.6	99.31	48.52	109	84	0.1	17.8	1612.17	0.727	1.039	0.0945	0.0233	0.664	0.822	0.0303	0.799	0.808			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Closed in 1969.	Velocity area station located approximately 180m upstream of Pultney Weir, Bath.		Gauged daily flow record discontinued October 1969.	Surface geology comprising of clays, limestones, sandstones, conglomerates and other rocks. Land use is mostly rural but with some urban areas.	Flows affected by abstractions for public water supply, groundwater abstractions/recharge and effluent returns.
53004	Chew at Compton Dando	129.5	ST6480164723	364801.0	164723.0	51°22'49.6472"N 2°30'25.7379"W	51.38046	-2.50715	Chew	Compton Dando	16.8	EA-WX	531450	53	1958-01-01		FL		85.0	4.8	true	true	true	true	false	false	false	true	false	false	false	false	false	SP	1958-03-01	2023-09-30	1.205	0.142	1962-07-27	1962-08-03	27.6	1979-05-30	1979-05-30	0.34	0.506	0.697	2.47	3.79	0.62	23955	23590	98.476	1958-03-01		20.928	19.2	55.5	106.4	208.4	300.4	958	987	0.1033	0.2113	0.607		0.0393	0.0557	0.3261	0.5598	0.002	0.0204	0.0409	0.0675	0.2154	0.6762	0.0005		0.0506	0.35	0.591	0.842	70.9	28.88	38.6	51.0	11.2	29.37	15.69	120	28	0.24	19.4	128.87	0.382	0.903	0.045	0.0088	0.483	0.869	0.0093	0.615	0.947			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume in deeply incised channel opened in 1958 north of the village of Compton Dando. Ultrasonic gauge installed 2007.	Station opened in 1958 north of the village of Compton Dando. Trapezoidal critical depth flume in deeply incised channel 5-6 m deep. Wide natural flood plain to north, terrace to south. Ultrasonic gauge installed 11/2007.	Full range station rated by current meter above 2m owing to backing-up caused by downstream bend. Two peak flow ratings applied across period of record. The most recent (from 1991) includes two modelled upper limbs.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Catchment of mixed geology - predominantly clay. Headwaters fed by limestone springs. Steep valleys downstream of reservoir on impermeable Coal Measures. Land-use is rural. Chew Valley Lake (a reservoir), provides significant storage -started to fill in the mid 1950s.	Large storage reservoir of Chew Valley Lake in headwaters; controls approx 40% of catchment area. Flows significantly affected by seasonal compensation flows and surface water abstractions for public water supply and industry.
53005	Midford Brook at Midford	147.4	ST7631561132	376315.0	161132.0	51°20'55.5669"N 2°20'29.3008"W	51.34877	-2.34147	Midford Brook	Midford	27.4	EA-WX	531370	53	1961-01-01		FL		56.0	4.9	true	true	false	true	false	false	false	true	false	true	false	false	true	PGE	1961-05-01	2023-09-30	2.298	0.167	1976-08-19	1976-08-19	32.9	2000-10-30	2000-10-30	0.431	0.88	1.46	5.04	7.13	0.62	22798	22737	99.732	1961-05-01		29.274	31.2	81.6	126.8	165.9	222.1	972	965	0.1294	0.305	0.457		0.105	0.0668	0.4343	0.4246	0.0007	0.073	0.3957		0.2601	0.3442	0.0187		0.0644	0.36	0.625	0.99	79.5	29.08	37.9	50.9	11.2	23.92	14.18	125	53	0.15	35.1	147.27	0.399	1.036	0.0409	0.0301	0.627	1.071	0.0437	0.774	1.074	1974..1989		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume upstream of confluence with the River Avon. Ultrasonic gauge installed 2007.	The station is located approximately 1km south of Bath and was opened in 1961. Trapezoidal critical depth flume 2.4km upstream of confluence with the River Avon. Ultrasonic gauge installed 11/2007.	Full range station. The channel bed in the vicinity of the station consists of large stones and alluvium and is lined in parts with trees and vegetation. Algal growth affects sensitivity at low flows. Bypassing may occur on left-hand bank above 3m stage. No backwater action. Single rating is based on the theoretical rating for the structure, and confirmed by a few gaugings up to 2.5m. Banks works been done u/s and d/s.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The Midford catchment is made up of two parallel river systems; the Cam Brook and Wellow Brook. Both run almost the length of the catchment before joining at Midford. The area is mainly rural although there are urban areas at Midsomer Norton and Radstock with smaller centres at Paulton and Peasedown St. John. Predominantly impermeable catchment - Lias with Coal Measures. Deep steep sided valleys; responds rapidly to rainfall. No major catchment changes.	Runoff influenced by groundwater abstraction/recharge. Surface water abstraction takes place for public water supply. Flows increased by effluent returns.
53006	Frome (Bristol) at Frenchay	148.9	ST6375377202	363753.0	177202.0	51°29'33.3326"N 2°31'24.5592"W	51.49259	-2.52349	Frome (Bristol)	Frenchay	20.0	EA-WX	530270	53	1961-01-01		FL		56.0	7.9	true	true	true	true	false	false	true	true	true	true	false	false	true	SGE	1961-09-01	2023-09-30	1.741	0.057	2022-08-15	2022-08-15	53.5	1965-12-18	1965-12-18	0.172	0.417	0.735	4.29	7.004	0.37	22675	22675	100.0	1961-09-01		30.697	22.7	50.3	66.2	106.4	194.3	795	792	0.0511	0.2175	0.4822		0.2279	0.0344	0.3565	0.3404	0.0057	0.2611	0.0182	0.1242	0.2059	0.6517	0.007		0.0267	0.35	0.362	0.993	28.6	43.42	34.4	46.9	10.6	27.74	13.71	73	291	0.09	23.1	151.63	0.94	1.0	0.1452	0.0716	0.763	0.794	0.1138	0.879	0.829			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume. Flume swamped in the storms of 1965 and 1968.	Station opened in 1961. Trapezoidal critical depth flume.	Full range station. Flume designed on basis of pre-urbanisation flow estimates - site swamped in storms of 1965 and 1968. Extra retaining walls have been installed. No drowning. One rating applied across period of record. Good fit to available gaugings. Had undermining issue but has been resolved.	Between 16/03/2015 and 19/03/2015 data estimated as bed and bank stabilisation work carried out. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in September 2023 (WINFAP Files v12).	Catchment of complex geology: eastern and central catchment dominated by sandstones of the Coal Measures and Mercia Mudstone; west less permeable having Mercia Mudstone and Liassic clays. Superficial deposits are meltwater gravels and terraces, mainly in west. There is a large proportion of urban development (~23%) in catchment, otherwise rural.	Runoff natural to within 10% at Q95. Attenuation from Tubbs bottom reservoir. Ground water abstractions from quarries.
53007	Frome (Somerset) at Tellisford	261.6	ST8051956427	380519.0	156427.0	51°18'23.8448"N 2°16'51.0620"W	51.30662	-2.28085	Frome (Somerset)	Tellisford	35.1	EA-WX	531160	53	1961-01-01		FL		113.0	4.8	true	true	true	true	false	false	false	true	false	false	false	false	false	PGH	1961-09-01	2023-09-30	3.799	0.197	1976-08-27	1976-08-27	54.3	1972-12-06	1972-12-06	0.626	1.3	2.14	8.7	12.7	0.52	22675	22675	100.0	1961-04-01		57.636	36.3	80.2	131.9	227.2	304.6	965	965	0.1471	0.299	0.4722	0.0001	0.0677	0.1226	0.3784	0.4509	0.0068	0.0378	0.3904	0.2673	0.2298	0.1125	0.0127		0.0145	0.36	0.563	0.96	60.6	29.94	37.4	48.9	11.2	40.59	21.09	143	54	0.17	36.3	263.76	0.507	0.898	0.0545	0.0161	0.649	0.771	0.0229	0.764	0.842	1960		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume opened in 1961. Ultrasonic gauge installed 2007.	Station located 500m north of the village of Tellisford and was opened in 1961. Trapezoidal critical depth flume. Ultrasonic gauge installed 11/2007.	Full range station. Deeply incised channel at station; all but extreme floods contained, although some over-bank upstream storage. It is believed station does not drown. Single rating based on the theoretical rating for flume. Few gaugings, most in the low flow range, high flows gauged upstream due to some bypassing. Estimated 100-year flow would be contained by structure.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly limestone with impermeable clays in Frome Gap and Coal Measures in Mells Valley. Responsive catchment, however detention lakes 5 to 6km upstream may truncate peaks. Land use is predominantly rural. No major catchment changes.	Substantial groundwater abstractions in catchment. Detention lakes 5 to 6km upstream may truncate peaks. Pumping station upstream of gauging station. Hydro-power u/s, effects low flows.
53008	Avon at Great Somerford	303.0	ST9648383310	396483.0	183310.0	51°32'55.2111"N 2°03'07.6115"W	51.54867	-2.05211	Avon	Great Somerford	57.6	EA-WX	530150	53	1964-01-01		CC			16.1	true	true	true	true	false	false	true	true	false	true	false	false	true	RG	1963-12-16	2023-09-30	3.344	0.084	1976-08-25	1976-08-25	61.7	1968-07-11	1968-07-11	0.333	0.764	1.8	8.19	11.7	0.57	21839	21839	100.0	1963-10-01		38.186	58.3	82.4	114.8	165.1	220.7	836	804	0.0794	0.443	0.4398		0.0348	0.0626	0.5052	0.4096	0.0015	0.0203	0.7994	0.0028	0.1978				0.0171	0.34	0.622	0.988	28.7	27.97	33.0	42.0	10.3	34.5	18.89	119	112	0.28	58.3	305.17	0.606	0.874	0.093	0.0077	0.559	0.868	0.009	0.738	0.906			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Opened as one of the first compound Crump weirs in Britain in 1963. Situated 90m downstream of Great Somerford road bridge.	Station located near the village of Great Somerford, 4km south east of Malmesbury and was opened in 1963 as one of the first Compound Crump weirs in Britain. Compound Crump profile weir having low flow crest between two flanking sections. Situated 90m downstream of Great Somerford road bridge.	Full range station, all except extreme flows (e.g. 07/1968 drowned the structure) contained. Flows go out of bank upstream before bankfull at the structure. Full review carried out in 03/1998 to try to explain discrepancy between original rating & recent low flow gaugings. Still some uncertainty whether the adopted rating is the most appropriate. 5 year review carried out in 2010 but no changes were made. Further review carried out in 2015-16 and lowest section of the rating was updated to use a more recent coefficient of discharge. One peak flow rating across period of record. Modelling being done to asses bypassing and new routine for gauging now in place.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in September 2023 (WINFAP Files v12).	Catchment mainly comprises Oolitic Limestone, with left bank tributaries draining off clays. Generally rapid to peak but slow recession. The upper catchment is dominated by the limestone of the Cotswold Hills. Land use is predominantly rural. No major catchment changes.	Flows augmented by groundwater scheme in catchment.
53009	Wellow Brook at Wellow	72.6	ST7403357995	374033.0	157995.0	51°19'13.6633"N 2°22'26.4308"W	51.32046	-2.37401	Wellow Brook	Wellow	43.7	EA-WX	531360	53	1966-01-01		FL		42.5	6.7	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1966-01-01	2023-09-30	1.304	0.09	1976-08-25	1976-08-25	15.8	2023-01-12	2023-01-12	0.242	0.499	0.867	2.88	3.98	0.62	21092	21086	99.972	1966-01-01		13.372	43.3	92.5	136.0	179.9	222.1	1018	999	0.1098	0.3532	0.4044		0.1267	0.0567	0.4664	0.3796	0.0015	0.0952	0.3114		0.3295	0.3591	0.0001		0.0299	0.37	0.643	0.983	68.4	27.31	38.3	52.1	11.3	18.49	10.66	135	46	0.22	45.5	73.64	0.291	1.023	0.0329	0.0382	0.625	0.966	0.055	0.782	0.954	1965		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume on incised channel. Bed-mounted hydro-acoustic gauge installed 2007.	Station opened in 1966. Trapezoidal critical depth flume on incised channel. Two bridges approx. 50 m downstream. Bed-mounted hydro-acoustic gauge installed 07/2007. As of 2019, station in need of significant maintenance, concrete is spalling. Gaugings are consistently positive, d/s blocks maybe affecting flows.	Full range station. Slight bypassing on right-hand bank. The river bed is composed of river alluvium and gravel and is lined with trees and vegetation. Algal growth affects sensitivity at low flows. Unadjusted step-changes in summer months due to weir cleaning and weed management are evident throughout the record. Mean Annual Flood adequately gauged; 100-year flow estimate within modular limit of the flume. Theoretical rating applied across whole period of record.	Backing up from bridge downstream occurred during 07/1968 flood (flow ~30 cumecs). Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	The catchment area upstream of the gauging station is characterised as predominantly rural but with urban centres at Midsomer Norton and Radstock. The watercourse lies on a thin band of the Trias and Lias that overlays the coal measures of the Somerset coal field and the catchment is dominated by geology of Lias and Oolitic Limestone. Very steep-sided valleys and rapid rainfall response. No major catchment changes.	Natural to within 10% at Q95.
53013	Marden at Stanley	99.2	ST9553672969	395536.0	172969.0	51°27'20.4560"N 2°03'56.2940"W	51.45568	-2.06564	Marden	Stanley	47.3	EA-WX	530850	53	1969-01-01		FL		35.5	5.6	true	true	true	true	false	false	false	true	false	true	false	false	true	PE	1970-01-01	2023-09-30	1.231	0.102	1976-08-26	1976-08-26	21.3	2007-07-20	2007-07-20	0.257	0.487	0.79	2.621	3.756	0.64	19631	19631	100.0	1970-01-01		13.58	49.7	77.9	101.8	165.1	262.6	770	724	0.1085	0.3495	0.4513		0.0802	0.0493	0.4559	0.4304	0.0054	0.0556	0.2239	0.3664	0.2423	0.1675				0.34	0.559	0.98	50.6	32.44	32.7	42.1	10.3	18.06	10.46	110	280	0.12	49.7	99.46	0.478	1.014	0.0732	0.0233	0.592	0.958	0.0278	0.782	0.953			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal critical depth flume with ultrasonic gauge. Some of the vegetation and trees on banks encroach on the river and possibly restrict flow.	Station located approx. 2km east of Chippenham and was opened in 1970. Trapezoidal critical depth flume. Ultrasonic gauge installed 11/2007.	Full range station. Level only station prior to 07/1969. Stanley Bridge, 100 - 150m upstream, causes throttling at high flows. Significant bypassing occurs at highest flows (e.g. 07/2007). One peak flow rating applied across period of record. Top end modelled and verified by ultrasonic readings. The river bed is composed of gravel and is lined with trees and vegetation, some of the vegetation and trees encroach on the river and possibly restrict flow. Water levels frequently reach the structure's capacity. Few high flow gaugings. Suffers from backing up, mainly at high flows.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	The catchment is predominantly rural with the towns of Calne and Lyneham the only significant urban areas. Geologically, the catchment is dominated by Oxford Clay and other impermeables with Chalk outcrops in headwaters. No major catchment changes.	Minor surface water abstractions and discharges in catchment. Some milling takes place.
53017	Boyd at Bitton	47.9	ST6814269866	368142.0	169866.0	51°25'36.8326"N 2°27'34.5927"W	51.4269	-2.45961	Boyd	Bitton	15.5	EA-WX	530350	53	1973-01-01		FV		94.0	25.0	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1973-11-01	2023-09-30	0.559	0.008	1976-08-28	1976-08-28	11.9	2008-01-11	2008-01-11	0.051	0.132	0.254	1.38	2.086	0.44	18231	18231	100.0	1973-11-01		13.908	15.5	70.6	105.9	181.6	236.0	808	807	0.0876	0.2809	0.5679		0.0597	0.0391	0.4153	0.5002	0.0071	0.0361	0.1172	0.0428	0.7033	0.1366			0.0214	0.35	0.496	0.998	62.7	37.6	35.8	46.6	10.8	15.32	8.98	111	271	0.23	15.5	47.58	0.424	1.036	0.0503	0.0124	0.623	0.875	0.0163	0.691	0.899			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir for low flows, rated section for high flows. Located upstream of the confluence with the River Avon (Bristol).	Flat V weir for low flows, crest 8m broad; rated section for high flows. Station opened in 1973 located approx 1.5 km upstream of its confluence with the River Avon (Bristol). Situated in rectangular sheet-piled section, 4m deep.	Full range station. Maintenance difficult. All flows contained. One rating applied across period of record. Rating determined at installation of the station and reviewed in 2011. No changes have been made but the review identified that more high flow gaugings are required. No gaugings to confirm high flow rating with confidence.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Predominantly clay catchment. Mainly rural with some urbanisation. The channel is not situated at the lowest part of the valley suggesting it may have been diverted in the past.	Runoff natural to within 10% at the Q95. Flows occasionally affected by temporary diversions or abstractions.
53018	Avon at Bathford	1552.0	ST7853367023	378533.0	167023.0	51°24'06.5744"N 2°18'35.9395"W	51.40183	-2.30998	Avon	Bathford	18.0	EA-WX	530180	53	1969-01-01		IV			9.8	true	true	true	true	false	false	false	true	false	false	false	false	false	RPGE	1969-10-27	2023-09-30	19.739	0.122	1997-06-18	1997-06-18	249.9	2000-10-30	2000-10-30	2.623	5.375	9.548	49.64	69.73	0.53	19697	19574	99.376	1969-12-01		165.317	20.3	53.3	104.0	172.1	304.6	840	817	0.1098	0.3439	0.4574	0.0	0.0782	0.073	0.4294	0.4374	0.0029	0.0556	0.4633	0.1294	0.323	0.0843	0.0207		0.0499	0.34	0.575	0.985	48.9	31.1	34.3	44.5	10.6	94.44	44.77	109	83	0.1	20.3	1569.35	0.731	1.029	0.0961	0.0229	0.664	0.816	0.0298	0.797	0.805			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway next to railway bridge opened in 1969. Acoustic Doppler equipment (ADCP) used for flow measurement 2006-2012. Briefly reverted to Velocity Area after the ADCP failed but returned to ADCP in June 2013.	Velocity area station with cableway next to railway bridge, 4km upstream of Bath (replacement for Bath St James 53003), immediately downstream of confluence with By Brook. Opened in 1969. The early part of the record is Stage/Discharge. However, with the exception of a brief period in 2013 the flow data since 2012 has been derived from indexed Acoustic Doppler equipment.	Under high flow conditions the railway bridge acts as a control, causing extensive floodplain inundation at high flows. All flows are contained through bridge 10m downstream due to enclosing railway embankment. Deterioration of Bathampton weir c.1.3km downstream has in the past affected low flows; acoustic Doppler equipment installed 15/12/2006 to improve the data. Recent works have been carried out to repair the weir and from 2012 onwards the station reverted to velocity area with flows produced using stage/discharge. Deep section and low velocities render flows below 5 m3/s inaccurate. One rating applied across period of record. Good fit to maximum out of bank gauging at ~3.5m. Full rating review carried out in March 1998.	Daily flows suspect during Summer 1976 due to extremely low levels, and during June 1997 when a sluice gate at Bathampton Weir failed. POTs missing December 1971 and October 1974 due to a lack of high-resolution data. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Catchment of mixed geology: predominantly clays and limestone; eastern tributaries rise from Chalk. Land-use is mainly rural, some urbanisation. No major catchment changes.	Abstraction from surface water/groundwater for public water supply. Flows augmented by groundwater scheme in catchment and effluent returns.
53019	Woodbridge Brook at Crabb Mill	46.6	ST9488386569	394883.0	186569.0	51°34'40.6561"N 2°04'30.8541"W	51.57796	-2.07524	Woodbridge Brook	Crabb Mill	65.5	EA-WX	530130	53	1974-01-01		TP		1.4	31.0	true	false	false	false	false	false	false	true	false	false	false	false	false	G	1969-08-01	2023-09-30	0.757	0.0	1976-08-04	1976-09-23	81.64	2007-07-20	2007-07-20	0.032	0.111	0.207	1.303	2.965	0.27	19784	19784	100.0				66.8	78.7	92.8	112.3	152.3	757	744	0.0979	0.3502	0.5296		0.0173	0.0917	0.3586	0.5353	0.0005	0.0115	0.2379	0.0146	0.7475					0.34	0.329	0.982	30.6	45.52	32.5	40.7	10.0	18.01	7.53	94	256	0.09	66.8	46.48	0.678	0.823	0.0935	0.0043			0.0026					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station on Woodbridge Brook just upstream of the confluence with the River Avon.		Compound rectangular thin-plate weir, having 1.52m centre section and two 0.76m wings. Measuring capacity of 1.4 m3s-1. Not suitable for high flows. Rating effected by weeds and backing up, rating review underway and ultrasonic being installed (2019).		Impermeable clay catchment. Land use is predominantly rural.	Substantial groundwater abstractions in catchment.
53020	Gauze Brook at Rodbourne	28.2	ST9373084029	393730.0	184029.0	51°33'18.3964"N 2°05'30.5872"W	51.55511	-2.09183	Gauze Brook	Rodbourne	66.0	EA-WX	530140	53	1968-01-01		TP		0.57	31.0	true	false	false	false	false	false	false	true	false	false	false	false	false	G	1968-08-01	2023-09-30	0.284	0.001	1976-08-10	1976-08-18	12.6	2012-11-21	2012-11-21	0.019	0.047	0.128	0.69	1.01	0.47	20149	20149	100.0				65.1	77.1	101.6	123.2	131.4	801	792	0.0717	0.5382	0.3508		0.0371	0.0572	0.6092	0.3098	0.0028	0.0204	0.7736		0.2264					0.34	0.58	1.0	24.9	30.58	33.2	41.9	10.4	15.58	7.46	101	63	0.31	65.1	25.23	0.708	1.014	0.1161	0.0077	0.543	0.872	0.0085	0.632	0.854			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station on Gauze Brook just upstream of the confluence with the River Avon.	Primarily a low flow station to monitor the impact of groundwater abstraction/recharge on river flow, which may cause abrupt rises in summer months.	Rectangular thin-plate weir. Measuring capacity of weir is 0.566 m3s-1, above which flows are estimated. Stream support monitoring.		Predominantly limestone catchment. Land-use is rural.
53022	Avon at Bath ultrasonic	1605.0	ST7383765101	373837.0	165101.0	51°23'03.6477"N 2°22'38.4453"W	51.38435	-2.37735	Avon	Bath ultrasonic	20.6	EA-WX	530184	53	1976-01-01		US				true	false	false	false	false	false	false	true	false	false	true	false	false	RPGE	1976-09-01	2023-09-30	20.279	0.79	1976-09-19	1976-09-19	261.3	1979-12-28	1979-12-28	3.424	6.756	11.54	47.3	66.84	0.56	17196	12715	73.942				16.1	53.1	104.6	174.1	304.6	840	818	0.1124	0.3354	0.4597	0.0	0.082	0.0739	0.4201	0.4418	0.0028	0.0597	0.4662	0.1253	0.3269	0.0815	0.02		0.0695	0.34	0.575	0.985	51.8	31.22	34.4	44.6	10.6	102.17	51.09	109	84	0.1	16.1	1621.88	0.729	1.038	0.0944	0.0245	0.667	0.793	0.0322	0.805	0.775			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Furthest downstream station on the River Avon (Somerset).		Multi-path ultrasonic in sheet piled channel, replaced original Harwell single-path instrument in 1996.	Data quality considered questionable until refurbishment in 2000, when 10-path equipment, with much better height distribution, was installed. Flows not processed between 12-1984 and 2000.	Catchment of mixed geology: predominantly clays and Oolitic Limestone; eastern tributaries rise from Chalk. Land-use is predominantly rural with some urbanisation.	Flows affected by abstractions for public water supply and augmentation from groundwater scheme.
53023	Sherston Avon at Fosseway	89.7	ST8913987031	389139.0	187031.0	51°34'55.3131"N 2°09'29.3108"W	51.58203	-2.15814	Sherston Avon	Fosseway	77.1	EA-WX	530550	53	1977-01-01		FV		20.4	20.0	true	true	true	true	false	false	false	true	false	false	false	false	false	G	1976-10-29	2023-09-30	0.995	0.028	1978-11-28	1978-11-28	10.1	2012-11-25	2012-11-25	0.126	0.244	0.563	2.42	3.22	0.65	17138	17054	99.51	1976-11-01		7.386	78.0	110.7	132.2	174.4	203.7	888	835	0.0766	0.4102	0.4738		0.0361	0.066	0.5222	0.3956	0.003	0.0128	0.9976	0.0024					0.0078	0.34	0.72	0.999	28.8	22.36	33.1	42.6	10.5	20.13	12.3	138	109	0.4	78.1	77.73	0.397	0.949	0.07	0.0072	0.547	0.913	0.0086	0.688	0.84			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir installed in 1976. Artificial influences produced lowest flows on record.	Station is located 3km upstream of Malmsbury and was opened in 1976. Flat V Crump profile weir, crest 7m broad.	Full range station. Fossebridge upstream used for gauging flows. Theoretical rating applied across period of record. Bypassing found at high flows, and will be modelled.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Geology: The catchment upstream is predominantly Oolitic limestone with Coal Measures. Land use is rural.	Runoff heavily influenced by groundwater abstraction/recharge. Artificial influences produced lowest flows on record in 11/1978. Flows augmented by ground water scheme with minor augmentation from effluent returns. Stream support upstream. Gate activity upstream may affect flows.
53024	Tetbury Avon at Brokenborough	73.6	ST9144489329	391444.0	189329.0	51°36'09.8410"N 2°07'29.7581"W	51.60273	-2.12493	Tetbury Avon	Brokenborough	78.2	EA-WX	530650	53	1977-01-01		FV		5.3	25.0	true	false	false	false	false	false	false	true	false	false	false	false	false	GE	1978-01-01	2023-09-30	0.716	0.026	1990-10-22	1990-10-23	17.76	1992-12-02	1992-12-02	0.076	0.135	0.343	1.78	2.509	0.6	16709	16709	100.0				75.3	104.4	139.9	182.2	220.7	887	831	0.0919	0.4829	0.3837		0.0382	0.0603	0.5541	0.3661	0.0011	0.0179	1.0						0.007	0.34	0.776	0.966	30.4	18.25	33.0	42.6	10.3	20.12	10.64	141	137	0.45	75.3	79.54	0.391	0.913	0.0685	0.0076	0.604	0.777	0.0109	0.81	0.841			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Low flow station on the Tetbury Avon.	Low flow station.	Flat V Crump profile weir, crest 7m. Rating not extended above the measuring capacity of the weir.	Peaks on the hydrograph before 1990 are truncated at 5.32 cumecs.	Catchment predominantly comprising of Oolitic Limestone. Land-use is rural.	Groundwater abstractions in catchment. Some augmentation from effluent returns.
53025	Mells at Vallis	119.0	ST7573649106	375736.0	149106.0	51°14'26.1993"N 2°20'56.2727"W	51.24061	-2.34896	Mells	Vallis	67.8	EA-WX	531240	53	1980-01-01		C		36.4	21.3	true	true	false	true	false	false	false	true	false	true	false	false	true	E	1979-12-31	2023-09-30	1.715	0.113	1989-08-29	1989-08-29	20.5	1998-10-31	1998-10-31	0.266	0.598	1.09	3.92	5.33	0.59	15980	15980	100.0	1979-12-31		20.942	72.7	114.8	177.6	242.2	304.6	1058	1056	0.114	0.3088	0.4873		0.0687	0.0961	0.3848	0.4744	0.0139	0.0262	0.3197	0.3798	0.132	0.1685				0.37	0.656	0.943	60.5	19.93	39.5	51.8	11.4	28.03	12.06	179	70	0.26	72.9	118.05	0.358	1.058	0.0453	0.011	0.507	0.83	0.0195	0.65	0.952			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir opened in 1980 in connection with monitoring of Mendip quarrying impacts. Numerous old and disused quarry sites in catchment.	Station is located 1km north west of Frome and was opened in 1979/1980 in connection with monitoring of Mendip quarrying impacts. Crump profile weir, crest 6m broad.	Full range station. All but highest flows contained within structure. The channel bed is rocky and the channel is lined with trees. Theoretical rating for the weir, valid until the modular limit but is not valid for non-modular flows.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	The catchment upstream is characterised as rural with numerous old and disused quarry sites, urbanisation is minimal with the main settlements being villages. Geology is predominantly Carboniferous Limestone with Coal Measures. Many of the soils are permeable or well drained, although over the coal measures the soils are slowly permeable and seasonally waterlogged. No major catchment changes.	Minor augmentation by effluent returns.
53026	Frome (Bristol) at Frampton Cotterell	78.5	ST6673282203	366732.0	182203.0	51°32'15.8667"N 2°28'51.7977"W	51.53774	-2.48105	Frome (Bristol)	Frampton Cotterell	42.6	EA-WX	530240	53	1978-01-01		C		48.0	38.3	true	true	true	true	false	false	false	true	false	false	false	false	false	N	1978-01-01	2023-09-30	1.011	0.017	2022-08-07	2022-08-07	20.76	2000-10-30	2000-10-30	0.089	0.235	0.433	2.559	4.123	0.4	16709	16709	100.0	1977-12-01		12.037	45.3	56.1	73.6	118.8	194.3	804	800	0.0519	0.263	0.5317		0.1338	0.0369	0.4174	0.4017	0.009	0.1332	0.0343	0.2238	0.2235	0.5184	0.0132		0.0429	0.35	0.397	0.991	26.4	41.11	33.9	46.5	10.4	19.59	9.75	84	290	0.2	47.9	80.6	1.073	0.897	0.1692	0.0432	0.709	0.814	0.0642	0.856	0.857	1977		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir opened in 1978 with pumping station upstream of gauging station.	Station opened in 1978. Crump profile weir, crest 7.5m broad.	Full range structure, but drowns out at high flows. Estimated 100-year flow contained by structure and it appears to have been over-designed. One theoretical rating applied across period of record. Gaugings can be difficult at site due to deep and slow moving water upstream. The site also suffers from siltation behind the weir.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Geology is mainly Coal Measures to the east of the River Frome, and Lias to the west. Responsive catchment, however detention lakes 4 to 6km upstream may truncate peaks. Land use is predominantly rural contains the town of Yate. No major changes to catchment.	Detention lakes upstream of gauge. Pumping station upstream of gauging station.
53028	By Brook at Middlehill	102.0	ST8140868806	381408.0	168806.0	51°25'04.6567"N 2°16'07.4956"W	51.41796	-2.26875	By Brook	Middlehill	28.1	EA-WX	530450	53	1971-01-01		FV			13.0	true	true	true	true	false	false	false	true	false	true	false	false	true	E	1982-01-01	2023-09-30	1.618	0.13	2022-08-15	2022-08-31	14.2	2012-11-25	2012-11-25	0.227	0.5	0.961	4.01	4.948	0.64	15248	15248	100.0	1981-12-30		10.697	28.9	86.9	137.9	182.4	220.6	873	835	0.1437	0.3535	0.4436		0.0492	0.099	0.4719	0.3967	0.0003	0.0313	0.9742	0.0001	0.0257				0.1345	0.34	0.729	0.999	75.2	21.99	34.6	43.9	10.7	30.03	15.93	137	79	0.22	28.9	99.48	0.227	1.005	0.0317	0.0107	0.529	0.714	0.0141	0.683	0.7			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir primarily installed as a low flow station in 1981.	Primarily installed as a low flow station, opened in 1981 approximately 4km west of Corsham. Flat V weir 8m wide for low flow, then rated section for higher flows. Wing walls at 2m contain most floods.	The channel bed consists of large stones. Highest observed flow at bankfull (2.11m), as which level flows become obstructed by a footbridge at the station. Meanders downstream. Single rating developed in 1996, based on theoretical weir rating and gaugings, applied retrospectively to the beginning of the record, modelling underway for the top end. Bend down stream causes inflection in rating.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The catchment area upstream of the station is mainly rural, with limited urban areas at Battiford, Box and Colerne. The area is underlain by strata of the middle Jurassic period, with Great Oolite limestone as the upper strata over most of the catchment. Erosion has exposed Midford Sands of the Upper Lias in some areas. Slowly permeable calcareous soils dominate along the river valleys. No major catchment changes.	Minor surface water abstractions in catchment. Gate movement upstream.
53029	Biss at Trowbridge	77.6	ST8543657893	385436.0	157893.0	51°19'11.8323"N 2°12'37.3481"W	51.31995	-2.21037	Biss	Trowbridge	32.0	EA-WX	531050	53	1984-01-01		FV			16.1	true	true	true	true	false	false	false	true	false	false	false	false	false	I	1984-01-01	2023-09-30	0.858	0.058	1997-08-19	1997-08-19	16.02	1990-02-03	1990-02-03	0.162	0.296	0.452	1.94	3.02	0.52	14518	14518	100.0	1984-01-20		12.018	34.2	45.3	68.3	132.9	230.3	781	759	0.1214	0.2938	0.4392		0.1242	0.0758	0.3539	0.4363	0.009	0.122	0.2448	0.1887	0.4707	0.0959				0.35	0.526	0.972	43.1	34.61	33.7	43.7	10.6	19.52	9.63	80	331	0.22	34.3	78.11	0.779	0.788	0.1202	0.0474	0.721	0.793	0.0569	0.824	0.796	1989..1990		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir for low flows and concrete rectangular rated section for high flows. Runoff figures suggest topographical and groundwater catchment areas do not coincide.	Station is located in the centre of Trowbridge and was opened in 1984. Flat V weir (1:10) for low flows, then concrete rectangular rated section (high flows), 7.13m wide, set in deep culvert with vertical walls. Ultrasonic gauge installed 12/2006.	Good approach, large downstream fall. Backing up from downstream due to debris. Rating for this station was reviewed in 2001. Previously two ratings existed for this station, the first was used from 1984 to 1992 based on theoretical rating for the weir. The second rating was fitted to the gaugings and used from 1992. Now one rating is applied across period of record; reviewed in 2011. A new top limb was derived using plot points from a time of flight ultrasonic installed at the site.	First few months to 11/03/1984 not included because of apparent datum change (higher levels in earlier record) and short gap. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9) and in August 2024 (WINFAP Files v13).	Moderate relief catchment situated along Frome gap. Drains Chalk escarpment to the south-east with underlying geology of Jurassic clays. Predominant land use is arable farming, but contains towns of Trowbridge and Westbury. Runoff figures suggest topographical and groundwater catchment areas do not coincide. No major changes to catchment.	Moderate influences at low flows by abstractions & discharges.
54001	Severn at Bewdley	4325.0	SO78237616	378230.0	276160.0	52°22'58.9258"N 2°19'16.5586"W	52.38303	-2.32127	Severn	Bewdley	17.0	EA-WM	2001	54	1921-01-01		US	420.0		3.3	true	true	true	true	false	true	false	true	true	true	true	true	true	SRPGEI	1921-04-01	2023-09-30	61.744	5.99	1976-09-04	1976-09-04	637.1	1947-03-21	1947-03-21	10.9	21.8	36.4	150.3	205.0	0.53	37438	37437	99.997	1923-10-01		340.325	18.8	68.8	127.4	359.7	826.2	934	912	0.133	0.232	0.5459	0.0258	0.0491	0.1001	0.3141	0.5114	0.0398	0.0292	0.2521	0.0177	0.529	0.2013	0.1199	0.0172	0.3881	0.38	0.541	0.973	88.6	33.68	34.4	44.2	9.9	222.55	119.55	175	95	0.07	18.8	4329.9	1.172	0.941	0.1055	0.0117	0.633	0.667	0.0199	0.795	0.655			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Currently an 18-path ultrasonic gauge this site was originally a VA station prior to 1989 and has been relocated in both 1950 and 1968.	The current site was converted to an ultrasonic gauge in March 1982. The former Thermo gauge was upgraded during September 2019 and replaced with a nivus 18-path ultrasonic gauge. High flows are still measured using the velocity-area method. Site humbly started from individual staff gauge readings dating back to 1921 at Bewdley bandstand near Bewdley Bridge. Spot flow measurements were conducted 0.5miles upstream of Bewdley Bridge to build a stage discharge relationship. Later a station, Bewdley Recorder, formally opened at Elan Aqueduct 2.5miles upstream of Bewdley in 1923. However manual readings took place from the original site up until 1950. This measuring section used for the original site became the current location for the ultrasonic gauge at Bewdley. The installation of the site occurred in 1968. Records prior to 1968 are of modest precision and potentially there are inconsistencies due to datum changes. However the quality of data has been considered overall to be high.	Multiple peak flow ratings applied across period of record. Uncertainty about the relationship at high flows for early record.	POTs available from 1972. The period-of-record maximum flow is listed as 637 cumecs in March 1947, although this is based on a daily mean flow (no instantaneous peak available) and the true peak is likely to have been higher. Lowest flows reprocessed in 1976 for 1921-68. Pre-1968 records have been correlated with the present station to produce a derived stage series for the present station. Further work is required to provide more confidence to the data series. Flows presented in NRFA apply a rating to the ultrasonic data so as to incorporate out of bank flow. The record given here combines the Elan Aqueduct, Bewdley Recorder, and Bewdley ultrasonic records. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Diverse catchment; wet western 50% from impermeable Palaeozoic rocks and river gravels; drier northern 50% from Drift covered Carboniferous to Liassic sandstones and marls. Moorland, forestry, mixed farming.	Naturalised flow series, from 1968 only, accommodates major usages other than g/w support. Some earlier records adjusted for Vyrnwy (1966-7). Significant exports for public water supply and power generation; minimum flow maintained by releases from Clywedog (built between 1965-67) and Vyrnwy Reservoirs (built between 1881 and 1888) and Shropshire groundwater.
54002	Avon at Evesham	2210.0	SP0400743741	404007.0	243741.0	52°05'31.2039"N 1°56'34.5392"W	52.092	-1.94293	Avon	Evesham	19.5	EA-WM	2002	54	1936-12-01		VA	125.0		15.0	true	true	true	true	false	true	false	true	true	true	true	true	true	SPGEI	1936-12-01	2023-09-30	15.937	1.27	1940-08-31	1959-10-09	411.0	2007-07-21	2007-07-21	2.97	6.14	8.69	35.1	55.6	0.52	31715	31621	99.704	1848-10-01		175.864	21.4	51.9	95.7	148.1	317.2	672	654	0.106	0.437	0.3409	0.0	0.1067	0.0492	0.4874	0.3681	0.0042	0.0868	0.0326	0.0094	0.5351	0.423	0.1247	0.004	0.2027	0.29	0.401	0.974	37.8	43.06	32.9	40.9	11.0	131.58	65.37	99	293	0.03	22.8	2207.95	1.0	0.94	0.1142	0.0415	0.737	1.036	0.0488	0.848	1.07			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with gauge site can measure out-of-bank flows providing lengthy historical series of flood peaks.	Velocity area station with gauge site can measure out-of-bank flows.	Bed not stable with lots of silt that shifts; bed can move by up to 2m. Main control is Chadbury weir, sluices and lock approx. 4.5km downstream. Earlier in record gaugings were taken at Hampton Parks cableway 2.5km downstream, below confluence with River Isbourne. Gaugings taken at the same day at Hinton were subtracted from this to estimate flow at Evesham. There have been some errors found in these calculations for the earlier gaugings. Now majority of gaugings taken just downstream of the Evesham Workman Bridge above confluence with River Isbourne. Navigation control at lock downstream. Low flow velocities can make gauging difficult. Ratings fit spot gaugings very well including at medium to high flows above bankfull. Coarse early low flow record owing to crude rating. Gauging site/s can measure out-of-bank flows.	Coarse early low flow record owing to crude rating. Pre 1937 data appear to be peaks over a high threshold that gives an event every few years and therefore should be used with caution. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Large catchment of low relief, draining argillaceous rocks almost exclusively. Contains some large towns, but chief land use is agriculture.	Extensive modification to flow regime from abstractions and returns. At low flows influenced by navigation - reach is impounded with locking.
54003	Vyrnwy at Vyrnwy Reservoir	94.3	SJ0188219027	301882.0	319027.0	52°45'35.6654"N 3°27'19.5292"W	52.75991	-3.45542	Vyrnwy	Vyrnwy Reservoir	226.3	NRW	2003	54	1920-01-01		TP				true	false	false	false	false	false	false	false	false	false	false	false	false	SR	1920-01-01	2023-09-30	2.178	0.0	2000-03-15	2000-03-15	72.6	2011-02-05	2011-02-05	0.327	0.531	0.594	5.057	8.811	0.35	37894	37775	99.686				248.0	288.9	476.0	559.1	666.5	1927	1971	0.1214	0.0008	0.3642	0.4475	0.0012	0.1489	0.0021	0.2154	0.5722	0.0001			1.0			0.0056		0.62	0.332	0.747	174.8	51.68	55.3	75.6	11.5	14.3	8.27	452	136	0.2	249.0	74.03	0.253	0.992	0.0194	0.0001			0.0001					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Thin plate rectangular regulating weir on the Vyrnwy River. Vyrnwy Dam immediately upstream regulates flows.	Thin plate rectangular regulating weir on the Vyrnwy River; stone cill overflow weirs on the rivers Cownwy and Marnant (whose flows are mostly diverted into the reservoir). Rainfall and spatial data are currently for the natural 74 sq km catchment, whereas the area draining to the gauging station including these catchwaters is 94.3 sq km. Direct supply to Liverpool.	Weir 24.4m long, does not drown out. Ideal site, very good gauge. Not wadeable and no cableway. Cownwy diversion has flat-v weir.	Some AMAX 'flood events' are likely to be compensation events (e.g. 1995-96). Naturalised monthly record available from 1879, daily record from 1920.	Steep, very wet catchment draining Drift-free Silurian and Ordovician slates and shales.	Lake Vyrnwy (built in 1880s) immediately upstream has huge influence in regulating flood flows and greatly compromises use for flood studies.
54004	Sowe at Stoneleigh	262.0	SP3315573096	433155.0	273096.0	52°21'17.7509"N 1°30'52.6467"W	52.35493	-1.51462	Sowe	Stoneleigh	55.0	EA-WM	2004	54	1951-01-01		CC	55.0		5.3	true	true	true	true	false	false	false	false	false	false	false	false	false	GEI	1952-10-01	2023-09-30	3.115	0.51	1961-07-30	1961-07-30	62.8	2012-11-25	2012-11-25	1.218	1.77	2.19	5.663	8.184	0.61	25932	25462	98.188	1951-03-01		30.577	54.5	78.8	100.5	131.8	183.1	690	667	0.1024	0.3406	0.2663		0.2754	0.0499	0.3888	0.2814	0.0057	0.2712	0.0874		0.0044	0.9082	0.0881	0.0071	0.379	0.3	0.51	0.977	27.9	35.78	33.0	42.0	10.8	33.48	17.26	104	144	0.19	59.1	263.52	0.787	0.936	0.1038	0.1344	0.835	0.835	0.1687	0.909	0.825	1950..2019		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir (3 channels) with crest tapping since 1979 replacing two humped invert flumes installed in 1951.	Since 1979 compound Crump profile weir (3 channels) with crest tapping. In-channel Larinier fish pass installed in lower crest of compound structure in Feb 2013. From 1951 to 1979 two humped invert flumes, total width 7.16m, and an overflow weir at 1.45m. Alteration carried out to lariner fish pass design from September 2019, due to access issues for carrying out routine maintenance. Structural remediation work also carried out on station building (ongoing).	Prone to weed growth. Gauging undertaken downstream. Rating dubious when overflow weir in operation. Three peak flow ratings applied across period of record. Good fit to gaugings although high flow gaugings impractical due to weed growth. Deployable Field Device (DFD) installed on 24/09/19 to measure level due to the main station being out of action following structural remediation work.	Missing data September 2019 - January 2020 due to site works, peak flow rejected during this period. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Substantially urbanised catchment. Western half on outcrop Coal Measures; Eastern half Mercia Mudstone Group overlain by Boulder Clay and glacial sand and gravel.	Groundwater pumping and bulk imports lead to low flows being dominated by Coventry sewage effluent.
54005	Severn at Montford	2025.0	SJ41191446	341190.0	314460.0	52°43'28.4658"N 2°52'19.9477"W	52.72457	-2.87221	Severn	Montford	52.0	EA-WM	2005	54	1953-01-01		US	220.0		4.3	true	true	true	true	false	true	false	false	false	true	true	true	true	SRPE	1953-10-01	2023-09-30	43.636	1.71	1976-09-21	1976-09-21	474.6	2022-02-21	2022-02-21	6.11	13.3	24.1	112.0	152.0	0.48	25567	25567	100.0	1952-01-01		308.65	51.8	86.6	231.7	429.1	826.2	1163	1147	0.168	0.0619	0.6961	0.0492	0.0105	0.1135	0.1183	0.6791	0.0743	0.0094	0.0721	0.012	0.9036	0.0124	0.0463	0.0053	0.3889	0.5	0.47	0.977	133.6	38.49	38.9	50.8	9.7	121.66	67.88	249	99	0.1	51.8	2026.77	1.344	0.72	0.0919	0.0026			0.0042			1951		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station only until Oct 1994 when cross-path ultrasonic installed measuring flows to bankfull. Highly regulated catchment with limited naturalised flows available.	Velocity area station only until 1994 when cross-path ultrasonic installed measuring flows to bankfull. Fully contained (EA comment that it can bypass on left bank); motorised winch can gauge all floods since 1985 (earlier, right bank only). Very prone to weed growth; considerable variations recorded in summer stage discharge relations.	Multiple peak flow ratings applied across period of record. Rating curve used to extract flows above bankfull as ultrasonic gauge underestimates them. Very prone to weed growth; much summer rating variability. High flows from US and gauging need reconciling.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	High relief headwaters. Valleys are broad bottomed with moderate slope and feature Boulder Clay, fluvial gravel and extensive washlands which slow response. Outcrop solid geology Ordovician and Silurian shales, grits and mudstones. Moorland, forestry, grazing, low grade agriculture.	Regulation from Vyrnwy and Clywedog and PWS abstractions have significant effect at low flows. Limited series of naturalised flows available.
54006	Stour (Worcs) at Kidderminster Callows Lane	324.0	SO83017683	383010.0	276830.0	52°23'21.2223"N 2°15'03.8676"W	52.38923	-2.25107	Stour (Worcs)	Kidderminster Callows Lane	30.0	EA-WM	2167	54	1953-01-01	2018-08-28	US	40.0		6.2	true	true	false	true	false	false	false	false	false	false	true	false	false	EI	1953-10-01	2018-08-28	2.772	0.546	1976-08-25	1976-08-25	41.63	1960-01-25	1960-01-25	1.228	1.838	2.251	4.66	6.145	0.7	23708	23708	100.0	1980-11-01	2018-08-28	18.692	30.2	68.6	108.0	169.8	313.3	701	693	0.1437	0.2067	0.2662	0.0006	0.3639	0.1009	0.3615	0.1997	0.0032	0.3318	0.5997		0.011	0.3894	0.1091		0.1222	0.3	0.655	0.978	59.7	26.95	31.1	38.8	10.7	46.92	24.13	114	254	0.08	30.2	323.38	0.428	1.049	0.0543	0.1653	0.834	1.199	0.2266	0.91	1.217	1985..1989	1985-10-01..1990-06-30	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	US station opened in 1987 to replace Kidderminster Gilt Edge (54906) a short distance upstream - providing a continuous combined series of flows in the Stour since 1954. Station closed on 28th August 2018 due to operational issues.	Station opened in 1987 to replace Kidderminster Gilt Edge (54906), which was a short distance upstream. Velocity-area station in formalised trapezoidal channel. All flows contained. Cableway moved from Gilt Edge to Callows Lane in 1995. An ultrasonic station from July 1990, located beneath the Kidderminster bypass and formed by the 4m high walls of the box culvert beneath this road bridge. All flows contained. There is a natural control 20m downstream of this bridge. Much silt, which moves about on the bed and builds up on transducers, but probably does not affect high flows. Rating not applied once ultrasonic installed. In terms of data quality, the ultrasonic station could probably be classed as OK for Pooling. However, since 2003 the Puxton flood alleviation scheme limits major events (see Artificial influences), so in terms of hydrology the station is not OK for Pooling after 2003. Ultrasonic record (from July 1990) combined with Gilt Edge, because they have same indicative suitability.	All flows contained. Cableway moved from Gilt Edge to Callows Lane in 1995. Site affected by silt, which moves about on the bed and builds up on transducers, but probably does not affect high flows. Ultrasonic reportedly under-records at low flows and its effect on high flows is unknown. The ultrasonic station could be classed as OK for Pooling. However, since 2003 the Puxton flood alleviation scheme limits major events, so in terms of hydrology the station is probably Not OK for Pooling after 2003. Rating not applied once ultrasonic installed.	Flow record is the combined series for Gilt Edge and Callows Lane (flows from Gilt Edge are in an unrepresentative period due to concerns with data quality and consistency). It is known that the period-of-record maximum flow occurred on 27 Mar 1955, but the magnitude cannot be verified because of the historical changes at the site. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Low relief, substantially urbanised catchment. Higher ground on flanks of river drain marls and s'st (Upper Coal Measures) but a faulted trough of Sherwood Sandstone is the major feature. Some Boulder Clay and valley gravel.	A flood storage scheme commissioned in 2003 at Puxton (upstream) restricts flows at Kidderminster and truncates all major events. Groundwater pumping for PWS and industry leads to substantial augmentation from sewage and industrial effluents.
54007	Arrow at Broom	319.0	SP0863853580	408638.0	253580.0	52°10'49.4627"N 1°52'30.3124"W	52.18041	-1.87509	Arrow	Broom	29.8	EA-WM	2104	54	1957-01-01		C	29.0		10.4	true	true	false	true	false	false	false	true	false	false	false	false	false	SGEI	1957-10-01	2023-09-30	2.896	0.223	1976-08-21	1976-08-21	150.0	2007-07-20	2007-07-20	0.816	1.25	1.67	5.51	8.88	0.52	24106	24051	99.772	1977-06-01		61.841	29.5	59.5	100.2	149.2	293.6	695	689	0.1559	0.3349	0.3996	0.0	0.1023	0.0891	0.3848	0.4351	0.002	0.0853	0.0387		0.0179	0.9435	0.0209	0.0016	0.0889	0.28	0.374	0.963	45.2	41.21	32.4	41.6	10.7	35.3	21.2	102	153	0.15	30.6	320.83	0.784	0.88	0.0945	0.0358	0.658	0.975	0.0437	0.798	0.99	1976		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir opened in 1976 to replace Broom (54907) and provide higher containment capacity than old site.	Opened in 1976 and replaced Broom (Old) (54907). Crump profile weir (12m) with a higher containment capacity than old site - high wing walls (1.7m) and banks.	Multiple peak flow ratings applied across period of record, with upper limbs derived from gaugings. Up to 1976 rated section; not rated above bankfull when extensive inundation.	July 2007 high flows likely to be overestimated, flows beyond capacity of measuring structure. Flows reprocessed for period 01/03/1995 to 01/01/2011 following review of rating in 2011. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9). Rating reviewed in 2022 and data reprocessed for the full period of record.	Low relief, predominantly agricultural catchment upon Mercia Mudstone, with small glacial gravel deposits in the eastern headwaters. Responsive; sewage effluent maintains low flows. Contains Redditch and Alcester.	Sewage effluent maintains low flows. Groundwater pumping for PWS significantly augments low flow through effluent returns. Responsive catchment.
54008	Teme at Tenbury	1134.4	SO59776852	359770.0	268520.0	52°18'47.8980"N 2°35'29.5715"W	52.31331	-2.59155	Teme	Tenbury	48.0	EA-WM	2008	54	1956-01-01		VA	200.0		6.4	true	true	true	true	false	false	true	true	true	true	true	false	true	EN	1956-10-01	2023-09-30	14.719	0.288	1976-08-26	1976-08-26	251.5	2020-02-16	2020-02-16	1.47	4.37	8.24	35.9	52.7	0.55	24471	24458	99.947	1956-09-01		139.084	48.4	110.0	214.4	383.7	544.5	877	841	0.1143	0.2225	0.6064	0.0205	0.0195	0.1057	0.3106	0.5343	0.0391	0.0093			0.7775	0.2225	0.0212		0.1535	0.36	0.612	0.994	116.1	28.53	33.4	44.3	10.2	82.75	45.1	231	141	0.12	48.6	1124.62	0.662	0.85	0.0635	0.0064	0.521	0.739	0.006	0.709	0.735	1955		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with gravel control well gauged to and rarely exceeding bankfull.	Velocity area station with gravel control. Well gauged to bankfull - open channel site with cableway. Straight wide channel, susceptible to bed movement. U/s shoaling may render low flow rating variable from year to year. Rarely out of bank. Installation of Flat V at d/s 54029 has largely eliminated apparent inconsistency between the two flow series.	Well gauged to bankfull - open channel site with cableway. Straight wide channel, susceptible to bed movement. U/s shoaling may render low flow rating variable from year to year. Rarely out of bank. Some scatter in gaugings, but reasonable fit to bank full.	Due to gravel shift during 2007 flood, flows post 23/07/2007 reprocessed using updated rating. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Left bank characterised by high relief hills and broad valleys. Steep and narrow on right bank. Geology: mainly Palaeozoic sediments with Pre-Cambrian crystalline rocks of the Longmynd. Relatively Drift free; some valley gravel and Boulder Clay in the lower reaches. Landuse mainly forestry and grazing.	Negligible abstraction and effluent flows -natural flow regime.
54010	Stour (Warks) at Alscot Park	319.0	SP2083350643	420833.0	250643.0	52°09'13.2427"N 1°41'48.8996"W	52.15368	-1.69692	Stour (Warks)	Alscot Park	37.8	EA-WM	2010	54	1959-01-01	2021-03-17	TP+CB		41.0	26.1	true	false	false	false	false	false	false	false	false	false	false	false	false	E	1959-10-01	2021-03-17	2.293	0.024	1976-08-27	1976-08-27	90.2	2007-07-20	2007-07-20	0.249	0.565	1.03	5.28	8.51	0.49	22449	16145	71.919				38.1	70.5	110.7	194.1	307.6	678	659	0.1077	0.5246	0.319		0.0419	0.0453	0.5867	0.348	0.0025	0.017	0.0387	0.0578	0.8716	0.0319	0.0108		0.0932	0.3	0.385	0.994	57.6	44.76	34.2	41.9	10.9	43.56	26.16	122	2	0.11	38.2	316.71	0.527	0.821	0.0592	0.015	0.575	0.977	0.0103	0.701	1.025			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad crested weir, and thin-plate side weir built for low flow measurement. Station closed 2021, see 54118 (Wimpstone) for replacement.	Compound broad crested weir, overall width 17.6 m, with shallow central drop section 0.15 m lower and 9.12 m wide. Set in old amenity weir with sluices. Thin-plate side weir built for low flow measurement when the station re-opened in 2000. Problems with trash accumulation on trash screen upstream of thin plate weir. Broad-crested structure in poor state of repair. Eel pass installed during works to infill 2 large recesses in 2018.	Weir theoretically rated. Numerous ratings, many of the changes only affect low flows. Very few gaugings, all at low flows. After thin plate installation, separate rating with upper sections calculated using gaugings.	Flows over broad-crested weir only at high flows. Problems due to variable sluice operation during high flows in the early record, resolved by installation of thin-plate in the sluice recess. Extensive flood plain, but flow on this is unlikely. Bypassing occasionally via two small mill offtakes.	Catchment geology predominantly Lower Lias, with Middle and Upper Lias and Oolite outcrops in the west and east. Mercia Mudstone at d/s end of catchment. Little cover except alluvium within valleys. Mixed arable and grassland landuse.
54011	Salwarpe at Harford Hill	184.0	SO86866193	386860.0	261930.0	52°15'19.3751"N 2°11'38.0976"W	52.25538	-2.19392	Salwarpe	Harford Hill	19.0	EA-WM	2011	54	1961-01-01		FV	34.0		12.9	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1961-10-01	2023-09-30	1.366	0.155	1976-08-24	1976-08-24	30.95	1981-12-30	1981-12-30	0.389	0.65	0.867	2.457	3.964	0.59	22645	19632	86.695	1958-01-01		20.814	21.8	40.8	68.5	147.0	294.2	675	666	0.1189	0.3455	0.3951	0.0001	0.1287	0.0551	0.4697	0.3487	0.0012	0.122	0.3445			0.6555	0.037		0.0044	0.28	0.523	0.983	42.0	35.13	30.7	37.0	10.6	29.37	13.52	83	209	0.23	21.8	186.52	0.713	0.786	0.0853	0.0496	0.714	1.032	0.0575	0.835	1.07	1957..1992		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Original velocity area station with bed of stone blocks replaced in 1992 by Flat V Crump profile weir.	Originally a velocity area station with a bed of stone blocks; closed 31/8/92. Replaced in 9/11/1992 by a flat V crump profile (1:20) weir, 7m wide, cross slopes, wing walls at 0.7m in reasonably straight reach, with additional cableway. Fully contained. Velocity-area station very prone to weed growth, summer corrections made: low flows of variable quality.	Two ratings applied across period of record, the most recent is valid from December-1992 when weir installed. Rating fits well to post weir gaugings to bank full. Gauged to bankfull only.	Water year 1992/1993 rejected due to the true AMAX occurring during a missing period. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Generally low relief catchment, draining Clent and Lickey hills. Contains Bromsgrove and Droitwich Spa. Virtually Drift free with predominant geology: Mercia Mudstone in the lower reaches. Mainly agricultural.	Groundwater for PWS leads to significant augmentation from sewage; spray irrigation abstraction seasonally significant.
54012	Tern at Walcot	852.0	SJ59181228	359180.0	312280.0	52°42'23.8970"N 2°36'20.1139"W	52.70664	-2.60559	Tern	Walcot	44.6	EA-WM	2012	54	1960-01-01		FV	26.0		2.8	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1959-05-12	2023-09-30	6.772	0.882	1976-08-26	1976-08-26	56.3	1990-01-28	1990-01-28	2.35	3.66	4.96	13.1	18.0	0.7	23518	23446	99.694	1959-05-01		34.63	45.5	62.0	88.7	128.7	392.4	718	694	0.0724	0.427	0.4175	0.0041	0.07	0.062	0.5189	0.358	0.0095	0.0474	0.5434	0.0522	0.116	0.2884	0.2485	0.0507	0.3366	0.34	0.616	0.966	28.2	28.63	29.2	36.6	9.7	53.5	29.72	93	244	0.04	47.1	851.65	1.172	0.979	0.1636	0.0199	0.617	0.77	0.029	0.8	0.74			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir that replaced earlier more primitive flow gauging sites (1959 - 1978) that suffered from unstable stage discharge relationship with regime highly affected by regional groundwater pumping and industrial inputs.	Initially rated section (1959-76), then gabion control (June 1976-Dec 1978), both very prone to weed growth leading to unstable stage-discharge relationship; now flat V weir, 15m wide with cableway.	Siltation upstream and downstream of weir structure. Multiple ratings applied across period of record. Data from a acoustic doppler flow gauge located at the site was to derive the drowned flow above 0.658m. Top section was derived from high flow gaugings in 2007. Automatic system for flushing crest tapping chamber is not totally reliable. Cableway for high flows rating. Some concern over scatter in spot gaugings but this not such a problem at high flows. Fit well to recent gaugings.	Bypass channel can be drained to enable work on weir, producing low or zero flows (e.g. 10 July 2003). 2011 flows higher than normal due to Shropshire groundwater scheme running in June. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Geology: mainly Triassic Sandstones with Triassic mudstones and Lower Lias to the northwest overlain by mixed glacial drift deposits. Predominantly agricultural, low relief catchment. Mixed land use.	Regional groundwater pumping for PWS and Severn regulation. Industrial effluent from Wellington and Newport; abstractions for spray irrigation. Net result only moderate.
54013	Clywedog at Cribynau	57.0	SN944855	294400.0	285500.0	52°27'25.9461"N 3°33'19.9392"W	52.45721	-3.55554	Clywedog	Cribynau	170.9	NRW	2013	54	1959-01-01	1979-12-31	MIS		51.0	10.3	true	false	false	false	false	false	false	false	false	false	false	false	false	SR	1959-01-01	1979-05-31	2.256	0.034	1961-07-04	1961-07-07	68.81	1964-12-12	1964-12-12	0.292	0.827	1.53	5.266	7.589	0.48	7456	7456	100.0				170.4	287.5	371.8	479.7	621.4	1731	1868	0.2107	0.0012	0.6389	0.0845	0.002	0.2333	0.0261	0.5762	0.1185	0.0029			1.0			0.0197	0.0017	0.66	0.445	0.802	165.0	42.65	59.9	78.6	11.9	20.79	11.48	374	100	0.19	170.4	57.02	0.329	1.004	0.0266	0.0			0.0					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound triangular cross-section weir with low-flow flume, downstream of Clywedog reservoir. Station now closed.	Compound triangular cross-section weir with low-flow flume, downstream of Clywedog reservoir. Record spans period of construction (Apr-1964 to Dec-1966) and opening (1968) of reservoir. Station now closed, superseded by 54081 Clywedog at Bryntail.	Approach partially infilled in 1967 to reduce deposition on flanks. Some drowning may occur at high stages. Gauge spanned by homemade bridge. Difficulties with calibration due to accretion upstream of the weir.		Steep, wet catchment draining Ordovician and Silurian shales and slates. Substantially Drift free. Most tributaries afforested on valley sides.	Affected post 1968 by Clywedog Reservoir (built 1964-7, 250ha surface area).
54014	Severn at Abermule	580.0	SO1648195777	316481.0	295777.0	52°33'12.2495"N 3°13'59.6970"W	52.5534	-3.23325	Severn	Abermule	83.0	NRW	2014	54	1962-01-01		VA	225.0		9.1	true	true	true	true	false	false	false	false	false	false	false	false	false	SRI	1962-10-01	2023-09-30	14.892	0.375	2005-09-14	2005-09-14	282.3	1964-12-13	1964-12-13	1.863	4.489	7.593	36.75	50.4	0.43	22280	22280	100.0	1960-06-01		188.8	85.9	153.8	284.6	429.5	736.4	1231	1256	0.1722	0.0125	0.7588	0.0264	0.0088	0.124	0.074	0.7336	0.0517	0.0108			1.0		0.0067	0.0085	0.2876	0.52	0.449	0.97	146.1	39.67	42.7	54.9	10.0	61.67	31.9	288	75	0.1	86.8	574.54	0.846	0.822	0.0597	0.0031			0.0045			1960..1967	1960-10-01..1968-10-01	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a straight reach with rock/gravel bed. Flow regime dominated by Clywedog releases when regulation in operation at low flows (from 1968).	Velocity area station in a straight reach with rock/gravel bed.	Abermule is located where the River Severn changes from an upland river to a mid-catchment river with a moderate slope. As it loses energy it deposits load carried from the uplands, making gravel beds a prominent feature. Changes to gravel beds especially after high flow events causes frequent changes to the low flow rating. Multiple peak flow ratings accross the period of record.	Station opened in 1960 and Clywedog reservoir was constructed in 1968. Change in station datum at about the same time created uncertainty in the datum and rating for that period - hence early record is excluded from Peak Flow dataset. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). Rating reviewed in 2022 and data reprocessed from 2008.	High relief headwaters but broad main channels of moderate slope with Boulder Clay and fluvial gravel. Solid geology predominantly Ordovician slates and shales. Responsive catchment.	Flow regime dominated by Clywedog reservoir; regulation releases are in operation at low flows (from 1968). Flow regime also influenced by flood drawdown releases from Clywedog for downstream flood attenuation. Significant abstraction for canal feeder at Penarth weir, but unlikely to affect high flows.
54015	Bow Brook at Besford Bridge	156.0	SO9269346252	392693.0	246252.0	52°06'52.3447"N 2°06'29.2384"W	52.11454	-2.10812	Bow Brook	Besford Bridge	13.4	EA-WM	2015	54	1969-01-01		FV	19.0		22.0	true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1969-10-01	2023-09-30	1.216	0.0	1973-09-22	1995-04-24	203.1	2007-07-21	2007-07-21	0.106	0.246	0.415	2.755	5.268	0.35	19723	19119	96.938				16.0	34.0	53.1	110.6	164.1	654	643	0.1093	0.3891	0.4426		0.0561	0.0508	0.501	0.4023	0.0006	0.0443	0.0153		0.3825	0.6022	0.0161		0.0231	0.28	0.334	0.993	33.3	46.19	30.2	38.0	10.4	39.71	21.04	62	170	0.14	16.0	158.31	0.901	0.915	0.117	0.0246	0.647	1.165	0.0205	0.806	1.277			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A flat V crump profile weir, which is important gauge for monitoring abstraction licences at low flows.	Prefabricated Flat V Crump profile weir, 4.01m wide, 1:10 cross slopes, wing walls at 0.67m, replaced full-width (2.44m) rectangular thin plate weir, thus improving flood flow measurement.	With cableway. Problems with weed-growth and siltation. Extensive floodplain plus backing up from d/s bridge and the R Avon.	Significant abstractions for spray irrigation plus sewage augmentation. April 1998 and July 2007 high flows thought to be considerable overestimates.	Drift free, draining Mercia Mudstone in headwaters and Lias clays otherwise. Low lying, agricultural catchment. Fairly responsive catchment.
54016	Roden at Rodington	259.0	SJ58911417	358910.0	314170.0	52°43'24.9851"N 2°36'35.3521"W	52.72361	-2.60982	Roden	Rodington	48.0	EA-WM	2016	54	1961-01-01		FLCB	18.0		7.5	true	true	true	true	false	false	false	true	false	true	false	false	true	GI	1961-10-01	2023-09-30	1.95	0.198	1996-07-22	1996-07-22	28.53	1968-07-03	1968-07-03	0.415	0.702	1.162	4.478	6.794	0.61	22645	19855	87.679	1961-04-01		10.985	49.3	67.9	89.4	108.9	207.0	712	693	0.0573	0.3937	0.4874	0.0115	0.0437	0.0519	0.4848	0.4164	0.0208	0.0223	0.2113		0.2657	0.5231	0.3763	0.0586	0.4062	0.34	0.615	0.981	22.2	27.47	29.0	36.5	9.4	49.1	29.67	89	116	0.1	49.3	261.94	1.38	1.085	0.2212	0.0103	0.524	0.867	0.0135	0.712	0.8	1960..1976		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Model tested trapezoidal flume and flanking broad-crested weirs within vertical sidewalls built as an experimental, model site for research purposes but has been retained as a flow measurement structure. In-channel Larinier fish pass installed in 2013.	Model tested trapezoidal flume and flanking broad-crested weirs within a vertical concrete side walls. Originally the site was built in the 1960s.	Tapping to measure tailwater levels (not used in last 25 years). In-channel Larinier fish pass installed Feb 2013, can be prone to blocking with debris. Channel prone to weed growth. Weir drowns at high flows. Two peak flow ratings applied across period of record. Reasonable fit to gaugings some of which are out of bank.	Daily and Peak flow data removed from between September 1969 and April 1977 as retrospective rating change could not be applied due to the gap in EA archive. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Geology: predominantly Triassic Mudstones and Lower Lias in the north with Permian Sandstones to the south, closer to the gauge. Blanketed extensively by Boulder Clay and morainic sand and gravel.	Unresponsive rural catchment. Net effect of general groundwater abstractions and returns insignificant; minor seasonal influence from spray irrigation. Shropshire groundwater Scheme affects (augments) low flows when in operation.
54017	Leadon at Wedderburn Bridge	293.0	SO7766423340	377664.0	223340.0	51°54'29.3155"N 2°19'33.9301"W	51.90814	-2.32609	Leadon	Wedderburn Bridge	9.1	EA-WM	2017	54	1962-01-01		FLCB	14.0	9.6	10.6	true	true	false	true	false	false	false	true	false	false	true	false	false	GEN	1962-10-01	2023-09-30	2.238	0.067	1976-08-17	1976-08-17	127.0	2007-07-20	2007-07-20	0.31	0.557	1.0	4.955	8.715	0.46	22280	22230	99.776	1961-08-01		48.071	9.5	29.8	65.8	136.1	322.6	713	685	0.1345	0.3711	0.447		0.0307	0.1029	0.5586	0.3063	0.002	0.0289	0.1301		0.6083	0.2616				0.33	0.57	0.99	60.4	35.6	32.0	41.4	10.1	41.15	21.0	74	113	0.1	9.5	287.41	0.607	0.897	0.0766	0.0123	0.541	0.978	0.0099	0.737	0.967	1961		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal flume flanked by broad-crested weirs within vertical sidewalls with suitable ratings up to QMED (bankfull) but uncertain accuracy above this limit - also affected by backwater effects.	Constructed in 1961 as a non-standard compound section comprised of a central trapezoidal flume flanked by broad crested weirs, with vertical sidewalls. Eel tiles installed flush to weir crest in November 2015. Expected to impact low flow measurement only. Calibration gaugings ongoing.	The station is affected by backing up at high flows from backwater (Wedderburn Road Bridge upstream) and weed growth. Many flood events (below QMED) are over-bank, with the floodplain extending some 300m. The structure was originally calibrated using physical models, and ratings have been based on these calibrations and on gaugings. Two ratings applied across period of record. Rating 10 was derived from the Dec-2000 event but was considered unsuitable for extrapolation to 2007 peak levels. Rating curve 11 was derived to improve peak flow rates calculated for the 2007 flood event. The July 2007 event was the first event to spill over the Wedderburn Road. Modelling conducted following the 2007 high flow event has been used to develop a high flow rating for the site. Ratings were reviewed in January 2009 by including gaugings during events of 2000 and 2007, and hydraulic model (ISIS) results. Model rating includes drowned conditions; when the Severn is high backing up occurs as flap valves operate, thus in-bank gaugings show scatter to the ratings because of the variable backwater and severe weed growth. Large scatter in gaugings at high flows but 2000 high flow gaugings are considered more accurate than earlier ones. Probably just OK for QMED because gaugings have extended to QMED, and because of the physical and computer modelling.	July 2007 peak flow affected by substantial attenuation on floodplain as was 1.3m above bankfull, and backing up behind road bridge. Variable backwater from weed growth (a significant issue) and from exceptional events (such as maxima in 1968 and 1998) on the River Severn. Data from a downstream sensor from December 2002.	Low relief, agricultural catchment. Virtually Drift free; headwaters and middles reaches s'sts of Devonian and Triassic age, some Palaeozoic mixed sediments to the north, Mercia Mudstone in the lower reaches.	Mostly natural regime. Minimal augmentation from groundwater pumping, spray irrigation may become significant at Q95. Minimal augmentation from gw pumping.
54018	Rea Brook at Hookagate	178.0	SJ46570923	346570.0	309230.0	52°40'41.2388"N 2°47'30.1418"W	52.67812	-2.79171	Rea Brook	Hookagate	64.6	EA-WM	2018	54	1962-01-01		FLCB	24.5		11.25	true	true	false	true	false	false	true	false	true	true	false	false	true	N	1962-10-01	2023-09-30	1.725	0.082	1976-08-23	1976-08-23	39.4	2007-07-21	2007-07-21	0.234	0.48	0.893	4.07	6.22	0.51	22280	21758	97.657	1962-10-01		23.2	66.0	97.9	145.8	327.6	515.2	781	757	0.0893	0.2123	0.5974	0.019	0.0672	0.0785	0.315	0.5755	0.0156	0.0144	0.0277		0.6522	0.3201	0.044		0.5637	0.42	0.508	0.991	89.5	31.56	32.0	41.0	9.7	30.32	16.57	183	52	0.18	68.5	172.85	0.576	0.858	0.0756	0.0048	0.028	0.038	0.0213	0.677	0.709			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Model tested trapezoidal flume and flanking broad-crested weirs within a vertical concrete side walls. Originally the site was built in the 1960s.	Model tested trapezoidal flume and flanking broad-crested weirs within a vertical concrete side walls, 7.3m apart. Originally the site was built in the 1960s, and although previously there were concerns about potential erosion on site, low flow gaugings confirm there are no issues at site.	Left bank inundated at high flows, however velocities in general are low on site, therefore extrapolation is considered reasonable. All flows are contained by the downstream road bridge, which is used to gauge high flows. Theoretical rating is applied across the period of record. Rating is thought to be reliable to 1.5mASD, but further gaugings are needed to confirm this.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Broad, flat main channel flanked by steeply graded streams. Complex geology; s'sts and shales (Pre-Cambrian to Silurian). Lower reaches entirely covered by Boulder Clay and fluvio-glacial sand and gravel. Moorland and low grade agriculture.	Substantially natural catchment. Minor effects from sewage at lowest flows.
54019	Avon at Stareton	347.0	SP3328771535	433287.0	271535.0	52°20'27.2029"N 1°30'46.2249"W	52.34089	-1.51284	Avon	Stareton	54.7	EA-WM	2019	54	1962-01-01		C VA	33.5	47.0	14.5	true	true	false	true	false	false	false	true	false	false	false	false	false	SEI	1962-10-01	2023-09-30	2.563	0.158	1976-08-17	1976-08-17	62.8	1998-04-10	1998-04-10	0.498	0.844	1.34	5.87	8.84	0.5	22280	22265	99.933	1962-10-01		28.6	55.3	82.6	118.3	156.4	214.1	692	654	0.0789	0.4137	0.3911		0.1049	0.0346	0.4452	0.4168	0.0081	0.0891	0.0181	0.0068	0.8318	0.1433	0.2015		0.6065	0.29	0.424	0.95	30.3	42.53	31.6	39.6	11.5	61.6	38.44	119	272	0.13	55.3	346.06	0.859	0.909	0.108	0.035	0.758	0.821	0.0455	0.852	0.84			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir with crest tapping, with moderate influence from abstractions and returns. The highest floods overtop the right bank and follow the old river channel.	Crump profile weir, 7.3m wide with crest tapping.	Three ratings across the period of record. ADCP gaugings typically undertaken just upstream of the weir.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Geology: from Upper Lias in the headwaters through Middle and Lower Lias with Mercia Mudstones and Triassic Sandstones in the lower reaches. Extensive covering of superficial deposits. Predominantly agricultural, low relief catchment, containing Rugby.	Early record to 1971 had Coventry sewage outfall diverted through station. Augmentation by groundwater pumping and surface transfers. Moderate influence from abstractions and returns.
54020	Perry at Yeaton	180.8	SJ43441924	343440.0	319240.0	52°46'04.0068"N 2°50'23.0025"W	52.76778	-2.83972	Perry	Yeaton	61.3	EA-WM	2020	54	1963-01-01		C	15.0	24.0	13.1	true	true	true	true	false	false	false	true	false	true	false	false	true	GEI	1963-10-01	2023-09-30	1.62	0.157	1976-08-25	1976-08-25	15.74	2000-11-06	2000-11-06	0.403	0.687	1.04	3.481	4.907	0.66	21915	21915	100.0	1963-10-01		10.622	60.5	79.4	93.8	123.5	364.4	773	739	0.0526	0.3919	0.5074	0.0023	0.0401	0.0404	0.4162	0.5045	0.0012	0.0313	0.5635	0.0227		0.4138	0.286	0.1018	0.5925	0.4	0.654	0.954	29.5	26.5	29.0	37.4	9.2	34.78	19.26	102	129	0.11	60.7	188.08	1.426	1.021	0.1899	0.0081	0.54	1.136	0.0144	0.743	1.146			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir that contains all floods while effluent returns in catchment may have substantial effect at lowest flows.	Crump profile weir with vertical wingwalls, 6m wide with (unused) crest tapping. Low cost fish baffles installed on downstream face of weir in July 2015.	All floods contained and the weir is not known to drown. Channel very prone to weed growth and may suffer from siltation upstream. Theoretical rating applied across period of record confirmed by gaugings to 0.85m.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	River rises on Millstone Grit and traverses Sherwood Sandstone and Mercia Mudstone, although there is extensive coverage by glacial sands and gravels with some peat deposits. Some marshland with complex artificial drainage.	Substantial groundwater abstraction has indirect effect. Effluent returns in catchment may have substantial effect at lowest flows.
54022	Severn at Plynlimon flume	8.7	SN853872	285300.0	287200.0	52°28'14.3281"N 3°41'23.9545"W	52.47065	-3.68999	Severn	Plynlimon flume	331.0	CEHW		54	1953-01-01		FL		43.0	19.0	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1953-10-01	2009-12-31	0.536	0.014	1955-07-23	1957-05-07	9.987	1998-03-06	1998-03-06	0.061	0.163	0.278	1.254	1.937	0.34	20546	16855	82.035	1951-11-01		14.988	321.4	377.7	495.7	621.3	736.4	2254	2481	0.544		0.2776	0.1416	0.0027	0.6478		0.1315	0.2195	0.0012			1.0			0.0027		0.66	0.323	1.0	180.3	52.68	72.9	97.8	13.2	5.78	2.94	501	116	0.43	321.4	8.75	0.132	0.8	0.0098	0.0			0.0			1951..1970	1951-11-01..1971-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal flume with side contractions. IH/UKCEH experimental catchment. Responsive natural flow regime.	Trapezoidal flume with side contractions since 1968, capacity 43 cumecs. 15 min. runoff totals available, also rainfall, evaporation and soil data from a dense monitoring network.	Flat recessions and flow jumps related to silting/flushing of the flume/inlet pipe. U/s silt trap (installed 1971) improved station performance but sensitivity a limiting factor at lowest flows. Multiple peak flow ratings applied across period of record, the most recent is valid from February 1971.	A compound sharp-edged weir, capacity 10 cumecs, with flanking broad crests provided poor quality data from 1953-58 (some notable minima, e.g. summer 1955). Record gaps not recoverable. Aug 1976 flows considered the lowest on record. Aug 1977 peak due to very intense local storm (90mm in 2 hrs); little impact in neighbouring catchment (55/8).	High relief, very wet catchment developed on Palaeozoic shales, grits and mudstones. Forest slopes very steep, peat moorland hilltops. Around 2/3 of catchment afforested up to 1985 when some clear felling took place.	Responsive natural flow regime.
54023	Badsey Brook at Offenham	95.8	SP0629144920	406291.0	244920.0	52°06'09.2885"N 1°54'34.4480"W	52.10258	-1.90957	Badsey Brook	Offenham	23.9	EA-WM	2023	54	1968-01-01		FV		12.0	10.0	true	true	false	true	false	false	false	true	false	false	false	false	false	PEI	1968-10-01	2023-09-30	0.713	0.017	1976-08-27	1976-08-27	112.0	2007-07-20	2007-07-20	0.079	0.17	0.31	1.658	2.92	0.43	20088	18948	94.325	1968-05-01		10.216	27.5	37.8	54.6	174.8	317.2	682	653	0.1098	0.4185	0.372		0.0964	0.0488	0.4943	0.403	0.006	0.0476	0.0223		0.9632	0.0145	0.0287		0.0164	0.29	0.331	0.988	42.7	47.79	32.5	41.8	10.9	16.26	8.38	78	316	0.37	27.6	93.93	0.937	0.787	0.1528	0.0349	0.648	0.779	0.0312	0.742	0.758	1994		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir in straightened cut with cableway replacing original trapezoidal flume (1968-95) that suffered from weed growth and poor state of repair.	Original trapezoidal flume (1968-95) replaced in 1995 (poor state of repair and weed growth problems affecting low flows). New weir is a flat V Crump profile (1:10) weir in straightened cut 5m wide, with wing walls at 0.7m and has cableway. Fish baffles added to weir in June 2018.	Cableway rated with flood banks containing all but the highest flows but inundation occurs u/s. Flat V weir drowns at medium levels but rating fits gaugings well below 2m stage. Constriction upstream will increase approach velocity. Original trapezoidal flume rating supported by c/m gaugings but poor state of repair and weed growth problems affecting low flows. Two ratings applied across period of record, the most recent is valid from July 1995 when flume replaced.	Station closed between Dec 1994 and July 1995. Flows in June 2018 affected by fish baffle construction on weir. April 1998 flood at 3.14m, estimated as 100 cumecs, well above rating limit so considerable uncertainty in this magnitude. July 2007 flood 0.5m above April 1998. Such flows are outside design range of site and degree of rating extrapolation means peak flows are considered inaccurate. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	River rises from springs on Cotswolds scarp; steep headwaters. Drift free, mostly Liassic argillaceous rocks. Agriculture and horticulture dominate.	PWS from headwater springs; river abstractions for horticulture. Sewage works short way upstream. Net result moderate, significant at low flows.
54024	Worfe at Burcote	258.0	SO74609534	374600.0	295340.0	52°33'19.0867"N 2°22'33.8313"W	52.5553	-2.37606	Worfe	Burcote	33.2	EA-WM	2024	54	1969-01-01		C	16.0	51.0	13.5	true	true	true	true	false	false	false	true	false	false	false	false	false	PGEI	1969-04-01	2023-09-30	1.201	0.05	1976-08-14	1976-08-14	18.46	2020-02-16	2020-02-16	0.354	0.668	0.925	2.188	2.99	0.71	19906	19906	100.0	1969-04-01		6.77	31.3	68.9	90.2	135.7	207.3	712	687	0.1119	0.4948	0.2601		0.1118	0.0856	0.6326	0.2047	0.0009	0.0714	0.7079			0.2921	0.1943		0.2227	0.34	0.642	0.943	39.9	30.56	29.6	36.3	10.5	36.66	19.62	96	171	0.09	31.3	255.22	0.595	1.006	0.0806	0.0308	0.641	1.231	0.0525	0.822	1.302	1983..1984	1984-01-05..1985-04-30	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir with crest tapping that contains all recorded floods within structure.	Crump profile weir, 5.5m wide, with crest tapping (unused). Eel tiles and low-cost fish baffles were installed in 2014.	Flows always contained - weir does not drown. Few gaugings above 0.3mASD. Two ratings applied across period of record. All recorded flows contained by structure. Good fit to available gaugings. Eel tiles and low-cost fish baffles were installed in 2014.	Data between Jan and Apr 1984 rejected due to uncertain data provenance. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Predominantly agricultural, low relief catchment draining Triassic sandstones; intermittent Boulder Clay and glacial sand and gravel cover.	Substantial impact from surface and groundwater abstractions for PWS, industry, irrigation and the Shropshire Groundwater Scheme.
54025	Dulas at Rhos-y-pentref	52.7	SN9498582492	294985.0	282492.0	52°25'49.0370"N 3°32'45.5485"W	52.43029	-3.54599	Dulas	Rhos-y-pentref	178.5	NRW	2025	54	1969-01-01		FL	146.0	146.0	22.5	true	true	true	true	false	false	true	false	false	true	true	false	true	N	1969-10-01	2023-09-30	1.404	0.005	1976-08-26	1976-08-27	29.87	2022-02-20	2022-02-20	0.052	0.316	0.689	3.64	5.22	0.39	19723	19723	100.0	1969-10-01		23.5	178.5	267.0	337.0	426.9	571.1	1291	1268	0.083	0.0021	0.8562	0.0331	0.0014	0.0727	0.0617	0.8066	0.0573	0.0017			1.0			0.0141	0.1325	0.59	0.439	1.0	161.3	40.26	42.2	55.5	10.1	15.22	7.78	342	58	0.1	178.5	53.33	0.264	0.961	0.0241	0.0			0.0007					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal flume with side contractions in CEH experimental catchment. Natural flow regime.	Trapezoidal flume, 15.9m wide, with side contractions to 13.7m in critical section, between 1.5m wing walls.	Very large capacity (c140-150 cumecs) flume, contains all flows. Shoals of shale fragments u/s and in throat of flume need annual clearing and also block intake pipes; 3 separate intakes increase chances of maintaining reliable stage recording throughout the range. However, it should be noted that annual gravel clearance is no longer undertaken. The peak flow ratings are calculated from theoretical with modification at low flows from dilution gauging.	Changes in clearance patterns lead to gravel accretion between Oct 2000 and June 2005. Despite reprocessing in 2006 to improve estimates, accuracy of low flows between 2000 and 2005 (particularly 2002, 2003) remains questionable due to blockage of stilling well intake. Low flow performance remains under review. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	A high relief, wet and responsive catchment on Silurian shales and slates with limited Boulder Clay coverage in the south and west of the catchment. Land use mainly pasture, forest and moorland.	Natural flow regime. Flashy response.
54026	Chelt at Slate Mill	34.5	SO8916726371	389167.0	226371.0	51°56'08.6607"N 2°09'32.3177"W	51.93574	-2.15898	Chelt	Slate Mill	16.9	EA-WM	2026	54	1969-01-01	1983-12-31	FL		25.0	5.5	true	true	false	true	false	false	false	false	false	false	false	false	false	SPEI	1969-04-01	1983-12-31	0.592	0.113	1972-04-23	1972-04-23	6.733	1979-12-27	1979-12-27	0.298	0.385	0.451	0.999	1.346	0.7	5388	4519	83.872	1969-04-01	2010-09-09	9.275	18.2	38.1	103.7	237.8	314.5	722	726	0.1344	0.1224	0.41		0.3121	0.0873	0.1199	0.4347	0.0216	0.3338	0.1117		0.8883		0.4398		0.003	0.33	0.443	0.975	79.5	36.07	33.7	43.0	10.4	17.15	10.96	122	319	0.38	18.3	31.31	0.649	0.5	0.1031	0.1583	0.826	0.792	0.205	0.909	0.755	1982..1999		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Concrete trapezoidal flume constructed in 1969 but prone to siltation and station closed in 2010 and structure removed.	Concrete trapezoidal flume constructed in 1969. A poor station, prone to variable silt build-up at lower end of flume. All flows contained within structure but high flow performance uncertain and no current metering since 1995. Station closed in 2010 and structure removed.	A poor station, prone to variable silt build up at lower end of flume and with no current metering since 1995. No information about performance at high flows. All flows contained within structure. One rating applied across period of record. All flows contained within structure, rating theoretically based and fits gaugings well.	Flows not processed between 1992 and 1999 due to poor rating; level record maintained during this period. No POTs available after 1982, AMAX only after. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Small catchment with Dowdeswell reservoir at the headwaters, largely an urban catchment. The river runs through the centre of Cheltenham and then through low lying farmland, where the station is located, before joining the River Severn. Underlying geology is largely Lower Lias clays with Middle and Upper Lias formations in the headwaters with river terrace sands and gravels along the main valley.	Reservoir(s) in catchment affect runoff. Runoff reduced by public water supply and industrial/agricultural abstraction, increased by effluent returns - site located downstream of STW.
54027	Frome at Ebley Mill	198.0	SO8301404627	383014.0	204627.0	51°44'24.3124"N 2°14'50.6351"W	51.74009	-2.2474	Frome	Ebley Mill	30.9	EA-WM	2027	54	1969-01-01		CBVA	18.0	45.0	8.3	true	true	true	true	false	false	false	true	false	true	true	false	true	PEI	1969-04-01	2023-09-30	2.621	0.318	1976-08-25	1976-08-27	19.1	2007-07-20	2007-07-20	0.825	1.52	2.1	4.88	6.17	0.87	19906	19895	99.945	1969-04-01		11.61	32.6	99.9	183.0	251.7	296.2	888	827	0.1934	0.2458	0.4854		0.0713	0.1843	0.314	0.4344	0.0021	0.0633	0.8452	0.036	0.1188		0.0041		0.4097	0.32	0.738	0.95	124.4	20.43	35.2	46.6	10.4	29.7	12.54	179	153	0.12	32.6	196.71	0.148	0.798	0.0154	0.0236	0.58	0.564	0.0307	0.731	0.543	1968		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on a curved reach with compound broad-crested weir as control - high flow section is a good fit to gaugings but possible bypassing at highest flows.	Velocity area station on a curved reach. Control is a compound broad-crested weir. River inundates widely at gauging section. Possibly some bypassing above 18 m3/s. Suffers from weed growth at low flows.	Control is a compound broad-crested weir. River inundates widely at gauging section. Possibly some bypassing above 18m3/s. Suffers from weed growth at low flows. One rating applied across period of record with two upper limbs modelled.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Steep headwaters drain the Cotswolds scarp of Oolitic L'st and Lias s'st. Valley bottoms are considerably urbanised and underlain by Lias clays. The station is in Stroud. A large number of historic structures (e.g. weirs and sluices) exist along the river which is closely linked to the canal at a number of points.	Substantial headwater abstractions for PWS; further industrial abstractions and significant sewage outfall.
54028	Vyrnwy at Llanymynech	778.0	SJ2529419641	325294.0	319641.0	52°46'09.0304"N 3°06'31.3577"W	52.76918	-3.10871	Vyrnwy	Llanymynech	62.0	NRW	2028	54	1970-01-01		VA	160.0		8.6	true	true	true	true	false	false	false	false	false	false	false	false	false	SRPI	1969-12-17	2023-09-30	21.69	0.416	1984-07-28	1984-07-28	406.8	2021-01-20	2021-01-20	2.337	6.574	11.85	50.61	73.71	0.45	19646	19645	99.995	1969-12-01	2014-10-01	273.18	65.0	130.0	272.0	488.4	826.2	1368	1339	0.2009	0.0147	0.6643	0.1038	0.0026	0.1398	0.0609	0.6461	0.1424	0.0033		0.0064	0.9936		0.0165	0.0049	0.3457	0.51	0.439	0.969	161.1	41.06	42.3	56.4	9.9	66.94	35.66	291	126	0.14	65.1	779.14	0.817	0.816	0.0521	0.0007			0.0009					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a substantially straight reach with natural shoal control. Three major PWS abstractions in the catchment have a substantial effect on the flow regime.	Velocity area station, 35m wide, in a substantially straight reach with natural shoal control. Llanymynech gauging section frequently changes shape due to the movement of the bed as a result of sediment loads deposited in the channel following high flow events. Gravel bars are often formed and have remained stable enough to become heavily vegetated in the past, these can cause skew flow. The physical changes to the channel control the stage-discharge relationship.	Daily flow rating relatively stable. Out-of-bank flows gauged from a cableway extension over the floodplain. Flow gauged above bank full. Multiple peak flow ratings applied across period of record. Rating changes due to bed shift. At highest flows a small amount of water bypasses the cableway on the left bank - flow estimated.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). Ratings reviewed in 2022 and data reprocessed for the full period of record.	Steep headwater streams and broad-bottomed valleys; storage in valley sands and gravels. Predominantly Silurian and Ordovician sandstones and mudstones overlain by Boulder Clay and sands and gravels in the main tributaries. Land use is moorland, forestry and grazing.	Three major PWS abstractions in the catchment have a substantial effect on the flow regime, notably the supply exported to Liverpool from Lake Vyrnwy.
54029	Teme at Knightsford Bridge	1480.0	SO73495573	373490.0	255730.0	52°11'56.9707"N 2°23'21.4424"W	52.19916	-2.38929	Teme	Knightsford Bridge	21.0	EA-WM	2029	54	1970-01-01		XC	190.0		20.2	true	true	true	true	false	true	false	true	true	true	false	true	true	N	1970-04-01	2023-09-30	18.169	0.716	1976-08-27	1976-08-27	290.0	2007-07-21	2007-07-21	1.91	5.3	9.94	42.5	63.2	0.55	19541	19541	100.0	1970-04-01		181.0	24.3	95.3	191.5	369.2	544.5	853	818	0.1199	0.2362	0.5856	0.0172	0.0251	0.1093	0.3284	0.5205	0.0319	0.0089		0.0053	0.8018	0.1929	0.0161		0.1266	0.35	0.6	0.994	110.1	30.81	33.6	44.2	10.4	117.13	69.48	212	132	0.12	28.6	1483.65	0.74	0.901	0.0618	0.0066	0.506	0.852	0.0065	0.691	0.835	1969		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Cross-correlation flow meter from 02/08/2022.	Weir converted to a rock ramp fish pass. Initial works during summer 2018 and secondary works during summer 2019. Cross correlation flow gauge installed 02/08/2022. Prior to this, a Flat V weir with training banks which contained higher flows, with cableway for full range calibration. Prior to 1998, velocity-area station which had a gravel control affected by weed growth at low flows.	Cross correlation flow gauge installed 02/08/2022. Multiple peak flow ratings across period of record.	Construction of the weir resulted in missing data during November and December 1998. Level and flow data affected by works to convert weir to a rock ramp fish pass for 14 Aug - 10 Nov 2018 and 08 Aug - 23 Sep 2019. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Left bank: high relief hills and broad valleys. Right bank: steep and narrow. Geology mainly Palaeozoic sediments with Pre-Cambrian crystalline rocks of the Longmynd. Relatively Drift free; some valley gravel and Boulder Clay along main tributaries. Land use predominantly moorland, forestry and grazing.	PWS abstractions and sewage returns insignificant. Natural catchment.
54032	Severn at Saxons Lode	6850.0	SO8634939041	386349.0	239041.0	52°02'58.5170"N 2°12'01.7072"W	52.04959	-2.20047	Severn	Saxons Lode	7.5	EA-WM	2032	54	1970-01-01		US	340.0		10.2	true	false	false	false	false	true	false	false	true	true	false	true	true	SRPGEI	1970-10-01	2023-09-30	88.335	8.28	1976-08-27	1976-08-27	546.0	2014-02-12	2014-02-12	15.5	30.5	53.5	227.0	291.0	0.58	19358	19343	99.923				9.5	61.5	130.8	345.6	826.2	879	855	0.1305	0.2422	0.5255	0.02	0.0669	0.1006	0.3349	0.4799	0.0323	0.0479	0.2145	0.0123	0.5186	0.2546	0.0959	0.0109	0.2823	0.35	0.562	0.978	88.3	32.71	33.7	43.4	10.1	271.23	136.73	170	114	0.07	9.5	6864.88	1.104	0.971	0.0952	0.0221	0.714	0.626	0.0312	0.838	0.66			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Multipath US gauge from 1987 replacing original velocity area station - affected by high tides and tidal gates on R. Avon at Tewkesbury.	Originally velocity area station between abutments of demolished railway bridge which mostly contain high flows at the site. Multipath ultrasonic gauge from 1987; this is reliable at low and medium flows, but bypassing means the station becomes progressively less reliable once stage exceeds about 4 m. Station is affected by high tides and tidal gates on R. Avon at Tewkesbury.	US station reliable at low and medium flows, but bypassing means the station becomes progressively less reliable once stage exceeds about 4 m. Bypassing upstream begins at around 4 m at the site. The bypassing has not been gauged, but comparison with Mythe (a velocity-area station downstream) suggests it is extensive at the highest flows. For example, on 23 November 2000 the level at Saxons Lode was 3.9 m and the flow measured at both Saxons Lode and Mythe was 318 m3/s. However, on 14 December 2000 Mythe recorded 766 m3/s yet the ultrasonic at Saxons Lode recorded only 529 m3/s for a level of 5.45 m. Station also affected by high tides and tidal gates on R. Avon at Tewkesbury. One rating applied across period of velocity area record as it agrees best with gaugings (although significant scatter is evident).		Very large, diverse catchment, relatively broad flood peaks. Land use mainly agriculture and forestry, with subordinate industrial development in the east.	Substantial modifications to flow owing to Public Water Supply exports, and effluent returns (chiefly the River Stour and Worcester). Runoff influenced by groundwater abstraction/recharge. Reservoir(s) in catchment affect runoff. Regulation from surface water and/or ground water. Runoff reduced by industrial/agricultural abstraction.
54034	Dowles Brook at Oak Cottage	40.8	SO77107642	377100.0	276420.0	52°23'07.1736"N 2°20'16.3882"W	52.38533	-2.33789	Dowles Brook	Oak Cottage	24.2	EA-WM	2034	54	1971-01-01		FVVA		10.0	33.3	true	true	false	true	false	false	true	true	false	true	false	false	true	N	1971-10-01	2023-09-30	0.372	0.008	1976-08-23	1976-08-26	31.16	2020-02-15	2020-02-15	0.03	0.073	0.147	0.888	1.48	0.39	18993	18991	99.989	1971-09-01		9.6	22.7	82.6	128.9	169.6	227.7	755	714	0.4253	0.1851	0.3186		0.0574	0.4436	0.2604	0.2797	0.0036	0.0122			0.1266	0.8734				0.32	0.634	0.997	91.9	18.84	33.1	44.2	11.2	15.18	8.02	127	67	0.13	22.7	44.16	0.13	0.901	0.0114	0.0042			0.0114	0.75	0.88			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir with cableway with flood banks on a 36m wide floodplain that should contain high flows but with some bypassing.	Flat V Crump profile weir 6m wide, with a cableway to allow high flow gauging.	Mostly modular even at high flows. Flood banks on a 36m wide floodplain should contain most flows but bypassing does occur- high range defined by few gaugings of dubious quality (weir only 1m deep). Cableway rated for high flows. Very few gaugings at high flows, but reasonably good fit at most levels.	Reliability of summer 2007 high flows uncertain due to station bypassing and possible elevated levels through backing up. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The catchment is mostly Drift free, situated on sandstones and marls of Upper Carboniferous age. The river bisects the Wyre Forest; all but the headwaters are afforested.	Flashy response. No significant abstractions or returns but flow patterns can be affected by sluice operation.
54036	Isbourne at Hinton on the Green	90.7	SP0236840680	402368.0	240680.0	52°03'52.1641"N 1°58'00.7345"W	52.06449	-1.96687	Isbourne	Hinton on the Green	25.5	EA-WM	2036	54	1972-01-01		C VA	11.0	3.4	33.0	true	true	true	true	false	false	true	true	false	false	false	false	true	PEI	1972-03-01	2023-09-30	0.687	0.0	1976-08-25	1976-08-28	38.8	2007-07-20	2007-07-20	0.097	0.204	0.37	1.49	2.29	0.54	18841	18804	99.804	1971-09-30		13.931	28.8	48.2	98.9	256.3	330.2	737	701	0.1469	0.3917	0.402	0.0004	0.0504	0.0912	0.4496	0.4197	0.0194	0.0195	0.1005		0.8995					0.32	0.479	0.99	77.7	39.2	32.4	42.1	10.5	21.5	12.29	127	329	0.27	28.9	92.83	0.544	0.598	0.0695	0.0169	0.565	0.848	0.0116	0.663	0.895	1971		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir (with fish baffles installed Oct 2012) in an incised trapezoidal channel with cableway, until 2014, now roped or RC boat for high flows. Used as a tributary index gauge in flood forecasting system.	Crump profile weir, 4.5m wide by 0.5m deep, in an incised trapezoidal channel. Low cost fish baffles installed in Oct 2012. Cableway for high flows until 2014. High flows (to bankfull, and possibly above) are now gauged by rope or radio controlled boat. Commonly exceeds bankfull and does bypass some of the gauging section. Insensitive at low flows. EA use site as a tributary index gauge in flood forecasting system.	Cableway until 2014 for high flows, by rope or remote control boat after. Commonly exceeds bankfull and does bypass some of the gauging section. Insensitive at low flows. One peak flow rating across period of record based on check gaugings and extrapolation above.	Station submerged and rating exceeded during July 2007 high flow event. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Steep headwaters; rises from springs from the Cotswold Oolites; Drift free, most of the catchment drains Lias clays. Agriculture and horticulture dominate.	PWS from headwater springs; spray irrigation and WRW effluent have dominant effect on the lowest flows. The Isbourne is spring-fed but flashy response to storms.
54038	Tanat at Llanyblodwel	229.0	SJ25232244	325230.0	322440.0	52°47'39.5632"N 3°06'37.0770"W	52.79432	-3.1103	Tanat	Llanyblodwel	77.0	EA-WM	2038	54	1973-01-01		FV			10.7	true	true	true	true	false	false	false	true	false	true	false	false	true	EIN	1973-06-01	2023-09-30	6.733	0.095	1976-09-07	1976-09-07	109.7	2021-01-20	2021-01-20	0.603	1.91	3.83	16.5	23.5	0.48	18384	18262	99.336	1973-06-01		79.32	76.0	145.6	296.3	537.6	826.2	1272	1274	0.153	0.0091	0.7321	0.0937	0.0034	0.082	0.0583	0.7292	0.1267	0.0029		0.0201	0.9799		0.0155	0.0142	0.3144	0.51	0.477	0.996	202.4	38.6	40.6	55.7	9.7	35.25	19.42	322	141	0.18	76.0	241.12	0.529	0.829	0.0382	0.0008			0.0009			1991		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir from 1992 that replaced velocity-area station with natural rock step control approximately 150m downstream of cableway.	From Feb 1992 Crump profile Flat V (1:20) weir, 12.4m wide, 0.72m high wing walls, replaced velocity area station with natural rock step control approx. 150m d/s of cableway. Gravel bed. Right bank floodplain approx. 50m wide, partially crossed by cableway.	Cableway rated. Right bank floodplain approximately 50m wide, partially crossed by cableway. Two ratings applied across period of record, the most recent is valid from April 1992 when weir installed. Ratings fit well to corresponding gaugings post-1992. Theoretical rating on open channel pre-1992 means flows are highly uncertain, although fit to available gaugings in the peak flow range is within acceptable tolerances.	Water year 1991/1992 rejected due to the true AMAX occurring during a missing period. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	High relief headwaters and broad bottomed valleys of moderate slope with Boulder Clay and fluvial gravel. Solid geology predominantly Ordovician slates and shales. Land use: moorland, forestry and pasture.	Sewage effluent has insignificant effect upon flow regime.
54040	Meese at Tibberton	167.8	SJ68072049	368070.0	320490.0	52°46'51.7406"N 2°28'29.3510"W	52.78104	-2.47482	Meese	Tibberton	56.4	EA-WM	2040	54	1973-01-01		C			13.7	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1973-11-01	2023-09-30	1.167	0.178	1976-08-27	1976-08-27	17.8	2007-06-26	2007-06-26	0.463	0.713	0.938	2.028	2.57	0.79	18231	18231	100.0	1973-11-01		4.954	57.2	72.2	98.2	126.6	164.3	737	700	0.0754	0.5151	0.3688	0.0003	0.0302	0.0679	0.5732	0.3406	0.0019	0.0092	0.7584	0.1031		0.1385	0.0834	0.0098	0.3619	0.34	0.588	0.931	30.0	30.18	29.1	35.1	10.1	32.86	19.07	98	228	0.14	57.2	159.87	0.808	0.993	0.1124	0.0066	0.336	1.028	0.0075	0.615	1.06			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir installed for the Shropshire Groundwater Scheme - suffers problems with high flow gaugings.	Crump profile weir, 6m wide, installed for the Shropshire Groundwater Scheme.	Weir drowns only at very high flows, but channel re-graded to further reduce the risk. Problems with high flow gaugings. One (theoretical) rating applied across period of record.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Agricultural, very low relief catchment with high baseflow component. Drains Sherwood Sandstone outcrop; intermittent Boulder Clay and glacial sand and gravel.	Indirectly affected by large PWS groundwater abstractions; otherwise spray irrigation and canal impoundment have moderate effect.
54041	Tern at Eaton upon Tern	192.0	SJ64922314	364920.0	323140.0	52°48'16.7905"N 2°31'18.4917"W	52.80466	-2.5218	Tern	Eaton upon Tern	53.5	EA-WM	2041	54	1972-07-01	2015-09-02	C	13.0		9.3	true	true	true	true	false	false	false	false	false	false	false	false	false	GEI	1972-07-01	2015-09-01	1.673	0.343	1976-07-02	1976-07-02	21.35	2012-09-26	2012-09-26	0.653	0.957	1.254	2.888	3.998	0.69	15768	15768	100.0	1972-06-01	2015-05-15	12.444	53.8	71.1	101.0	150.9	234.6	757	719	0.0798	0.3565	0.5176	0.0013	0.0434	0.0823	0.4102	0.4668	0.0084	0.0295	0.5214	0.1287	0.1332	0.2167	0.2478		0.2138	0.34	0.645	0.954	36.1	27.5	28.9	37.4	9.6	37.38	19.72	107	221	0.11	53.8	193.49	0.996	0.9	0.1195	0.011	0.542	0.986	0.0153	0.732	1.009	1974		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Two-bay Crump profile weir with identical crest heights and crest tapping set into old mill sluices - constructed for low flow measurement as part of Shropshire Groundwater Scheme network. Station closed in 2015.	Two-bay Crump profile weir with identical crest heights, 6m total width, with crest tapping set into old mill sluices. Weirs constructed beneath twin arch bridge. Constructed for low flow measurement as part of Shropshire Groundwater Scheme network. Station closed in 2015.	U/s cableway. Seasonal channel vegetation causes weir to drown. Reasonable fit to in-bank gaugings. One peak flow rating across period of record.	2011 flows higher than normal due to running of Shropshire groundwater scheme during June 2011. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Agricultural, low relief catchment. Outcrop Triassic and Coal Measures sandstones near the gauge; intermittent Boulder Clay and glacial sand and gravel become dominant over the upper catchment.	Significant groundwater abstractions - part of Shropshire Groundwater Scheme network. Agricultural and PWS abstractions balance effluent returns. Levels affected by the operation of Peplow Lake Sluices upstream.
54043	Severn at Upton On Severn	6850.0	SO863399	386300.0	239900.0	52°03'26.3150"N 2°12'04.4046"W	52.05731	-2.20122	Severn	Upton On Severn	7.5	EA-WM		54	1955-01-01	1970-12-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	SRPGEI	1955-05-01	1970-09-30	95.089	13.9	1957-06-22	1964-09-11	529.5	1960-01-25	1960-01-25	22.46	38.51	53.8	240.7	351.1	0.55	5632	5603	99.485				9.5	61.5	130.8	345.6	826.2	879	855	0.1305	0.2422	0.5255	0.02	0.0669	0.1007	0.3348	0.48	0.0323	0.0479	0.2145	0.0123	0.5187	0.2545	0.0958	0.0109	0.2823	0.35	0.562	0.978	88.3	32.72	33.7	43.4	10.1	270.21	135.72	170	114	0.07	9.5	6863.41	1.102	0.972	0.0951	0.0222	0.714	0.623	0.0313	0.838	0.657			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, superseded by 54032.	Velocity-area station opened in 1955. Superseded in 1970 by 54032 2km d/s.	Rated by gauging from Upton Bridge.		Very large, diverse catchment, relatively broad flood peaks. Land use mainly agriculture and forestry, with subordinate industrial development in the east.
54044	Tern at Ternhill	92.6	SJ62853148	362850.0	331480.0	52°52'46.1753"N 2°33'12.4563"W	52.87949	-2.55346	Tern	Ternhill	62.2	EA-WM	2044	54	1972-01-01		TPVA		2.0	9.1	true	true	false	true	false	false	false	true	false	true	false	false	true	GEI	1972-09-14	2023-09-30	0.86	0.264	1976-08-27	1976-08-27	20.26	2019-10-26	2019-10-26	0.417	0.571	0.709	1.396	1.797	0.78	18644	18644	100.0	1972-10-01		4.69	61.7	87.1	121.0	166.9	234.6	794	739	0.116	0.3007	0.5276	0.002	0.0527	0.1247	0.3729	0.4448	0.0155	0.0391	0.6329	0.1721		0.1949	0.2372		0.1157	0.34	0.698	0.96	44.1	25.06	29.7	38.8	9.7	26.94	16.36	125	252	0.15	61.9	95.72	0.813	0.862	0.1005	0.0137	0.598	0.796	0.0194	0.771	0.769	1971		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular thin plate notch 4m wide weir.	Rectangular thin plate weir present on site, 4m wide by 0.43m depth. The site is located next to the confluence of the Bailey Brook, and shares the gauging station on site with the Bailey Brook gauge (54052). Levels exceptionally rarely reach out of bank.	Predominantly a low flow site. Previously there was a cableway to measure high flows, but this has since been removed. It is possible to measure and gauge all the way to bankfull. One rating applied across the whole period of record.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Agricultural, low relief catchment, high baseflow from Bunter sandstone and glacial sand and gravel. Boulder Clay typifies the right hand bank geology.	Significant ground and surface water abstractions in the catchment with effluent from Market Drayton. Irregular operation of sluices from Oakleigh Park may affect natural flow.
54045	Perry at Perry Farm	49.1	SJ34683025	334680.0	330250.0	52°51'56.6966"N 2°58'18.2727"W	52.86575	-2.97174	Perry	Perry Farm	79.0	EA-WM		54	1973-01-01	1979-12-31	FV		30.6	20.6	true	false	false	false	false	false	false	false	false	false	false	false	false	GEIN	1974-01-01	1979-05-31	0.62	0.1	1976-08-25	1976-08-25	9.119	1974-02-11	1974-02-11	0.204	0.309	0.48	1.134	1.474	0.72	1977	1977	100.0				79.8	88.3	110.0	219.7	364.4	887	813	0.0681	0.204	0.6595	0.0033	0.065	0.0476	0.2361	0.6495	0.0026	0.0631	0.4187	0.0861		0.4953	0.3319	0.0367	0.6311	0.51	0.564	0.951	38.3	32.51	31.6	41.6	9.3	13.98	6.75	131	103	0.31	80.1	49.48	1.182	0.729	0.1516	0.015	0.562	0.953	0.0291	0.786	0.943			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump weir. Discontinued 1979.	Flat V Crump weir.
54046	Worfe at Cosford	54.9	SJ78030467	378030.0	304670.0	52°38'21.5704"N 2°19'33.9518"W	52.63933	-2.3261	Worfe	Cosford	59.5	EA-WM	2046	54	1975-01-01		TP	3.5		47.5	true	false	false	false	false	false	false	true	false	false	false	false	false	GI	1975-02-01	2023-09-30	0.214	0.0	1997-06-04	1997-06-10	6.981	1986-01-10	1986-01-10	0.038	0.096	0.143	0.425	0.62	0.61	17774	17010	95.702				59.7	83.4	107.4	141.0	189.4	711	706	0.1355	0.513	0.2691		0.0602	0.1286	0.6375	0.2103	0.0011	0.0178	0.7033			0.2967	0.2489		0.0608	0.34	0.664	0.905	36.3	29.68	29.4	36.1	10.4	14.45	7.74	109	175	0.19	59.7	53.74	0.54	0.968	0.076	0.0065	0.363	0.863	0.0126	0.643	1.139			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Gauging station installed to monitor effects of PWS abstractions.	Originally a rectangular weir, 3.05m wide, with side contractions. Suffered from substantial leakage, rebuilt in 1990: weir 4m wide.			Predominantly agricultural, low relief catchment draining Sherwood S'st with intermittent Boulder Clay and glacial sand and gravel cover.	Affected by Shropshire Groundwater Scheme. Substantial impact from gw abstractions for PWS (Cosing Stream), and irrigation.
54047	Perry at Ruyton Bridge	155.0	SJ403223	340300.0	322300.0	52°47'41.8043"N 2°53'12.5321"W	52.79495	-2.88681	Perry	Ruyton Bridge	71.0	EA-WM		54	1975-01-01	1978-11-29	VA			25.5	true	false	false	false	false	false	false	false	false	false	false	false	false		1975-10-01	1978-11-28	1.192	0.116	1976-08-23	1976-08-26	10.14	1977-02-10	1977-02-10	0.208	0.491	0.691	2.584	3.803	0.67	1155	1155	100.0				70.6	79.8	95.8	129.0	364.4	790	750	0.0556	0.3715	0.5216	0.0028	0.0435	0.0437	0.3973	0.5176	0.0014	0.0339	0.5942	0.0273		0.3785	0.292	0.113	0.575	0.43	0.651	0.965	30.0	26.85	29.0	37.8	9.2	28.64	15.84	105	117	0.1	70.6	155.87	1.551	0.952	0.2048	0.0085	0.556	1.169	0.0156	0.751	1.134			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station.	Velocity area station.
54048	Dene at Wellesbourne	102.0	SP2727155587	427271.0	255587.0	52°11'52.2493"N 1°36'08.7253"W	52.19785	-1.60242	Dene	Wellesbourne	41.3	EA-WM	2048	54	1976-01-01		FV	27.0			true	false	false	false	false	false	false	true	false	false	false	false	false	EI	1976-05-21	2023-09-30	0.629	0.023	1976-07-09	1976-08-22	47.8	2007-07-20	2007-07-20	0.06	0.132	0.257	1.43	2.33	0.42	17299	17299	100.0				40.8	71.3	96.6	125.4	219.2	646	628	0.1287	0.5371	0.2799		0.0487	0.0654	0.5876	0.314	0.0026	0.0275			0.9066	0.0934	0.0794		0.1747	0.3	0.324	0.966	39.2	47.8	33.2	39.6	10.9	23.7	14.08	98	314	0.15	40.8	96.55	0.579	1.003	0.0829	0.016	0.562	0.877	0.0117	0.684	0.877			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir built in 1976 as part of flood alleviation scheme works, with flows moderately influence by effluent discharges and irrigation.	Flat V Crump profile weir built in 1976 as part of flood alleviation scheme works, 7.97m wide; cross-slope 1:20, large d/s fall, all flows contained.	July 2007 flows exceeded limit of rating curve.	Moderate influence from effluent discharges and seasonal spray irrigation.	Predominantly agricultural catchment draining Edge Hill. Some Boulder Clay to the east overlying, predominantly, argillaceous rocks of the Lower Liassic series with Mercia Mudstone closer to the gauge.	Flow regime has visibly changed since May 1989 with more diurnal pattern, believed due to Wellsbourne Water Mill being restored.
54049	Leam at Princes Drive Weir	362.0	SP3085865437	430858.0	265437.0	52°17'10.3582"N 1°32'56.5756"W	52.28621	-1.54905	Leam	Princes Drive Weir	46.3	EA-WM	2049	54	1961-01-01		TP			16.1	true	false	false	false	false	false	false	true	false	false	false	false	false	SRPGE	1979-11-08	2023-09-30	2.111	0.045	1984-07-11	1984-07-11	112.8	1998-04-10	1998-04-10	0.293	0.508	0.777	4.937	8.424	0.38	16033	16002	99.807				47.5	68.3	95.4	136.4	223.2	662	644	0.0805	0.4741	0.3585		0.0745	0.0312	0.5067	0.4046	0.0023	0.0462			0.7592	0.2408	0.1509		0.0644	0.3	0.316	0.977	33.1	48.75	33.2	40.8	11.2	59.04	32.67	99	318	0.13	47.5	367.11	1.26	0.934	0.1393	0.0241	0.699	0.54	0.0289	0.832	0.51			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station very important for monitoring PWS abstractions on the Leam and to measure releases from Draycote pumped storage reservoir.	Originally a thin-plate notch set in a broad-crested curved weir with a (leaking) sluice gate. Record poor, high flows unreliable. The sluice was replaced by a second, lower thin-plate weir which became operational in 1979 and has led to improved data.	Gauging close to the peak lends credence to the extreme April 1998 flood value.		Agricultural catchment of low relief, substantially Drift free although sands and gravels exist along the lower reaches. The lower fifth of the catchment drains Mercia Mudstone; the remainder underlain by Liassic argillites.	Imports of water and gw pumping; substantial modification of flow regime. Some naturalised data from 1989.
54050	Leam at Eathorpe	300.0	SP3885368829	438853.0	268829.0	52°18'58.3149"N 1°25'53.2523"W	52.3162	-1.43146	Leam	Eathorpe	56.6	EA-WM	2050	54	1968-01-01		FLCB	6.5			true	false	false	false	false	false	false	true	false	false	false	false	false	P	1987-01-01	2023-09-30	1.568	0.081	2012-01-28	2012-01-28	79.14	2007-07-21	2007-07-21	0.219	0.319	0.441	3.61	6.579	0.32	13422	13422	100.0				59.1	76.7	99.8	142.1	223.2	666	644	0.0743	0.4732	0.3824		0.0568	0.0258	0.5016	0.4353	0.0021	0.0248			0.9142	0.0858	0.1163		0.0517	0.3	0.282	0.974	33.4	50.58	33.0	40.7	11.3	42.33	21.0	104	321	0.12	59.1	301.04	1.279	0.894	0.1388	0.0123	0.592	0.918	0.0139	0.747	0.939			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	The flows here are dominated by the Draycote Reservoir and is an important flow forecasting site.	Side-contracted central low flow flume, flanked by broad-crested weirs in a straight reach.	Exceeds bankfull but not bypassed. Rated by model test and c/m.		Low relief catchment. Mercia Mudstone in the lower catchment is overlain by river terraces, otherwise Lower Lias clays and silts. The north has abundant glacial sands and gravels. Wholly rural apart from south Rugby. Mixed farming.	Flashy response. Flow regime dominated by the operation of Draycote Reservoir via the Eathorpe intake approx. 100m u/s - abstraction and support. Important flow forecasting site.
54052	Bailey Brook at Ternhill	34.4	SJ62853149	362850.0	331490.0	52°52'46.4989"N 2°33'12.4604"W	52.87958	-2.55346	Bailey Brook	Ternhill	62.2	EA-WM	2052	54	1970-01-01		TP			18.2	true	false	false	false	false	false	false	true	false	false	false	false	false	GEN	1970-04-01	2023-09-30	0.319	0.023	2011-12-04	2011-12-04	8.159	2019-10-26	2019-10-26	0.106	0.162	0.224	0.62	0.864	0.69	19541	19528	99.933				61.7	79.3	90.2	104.0	131.0	738	707	0.0298	0.4038	0.5274	0.0003	0.037	0.0371	0.3804	0.5628	0.0011	0.0159			0.6696	0.3304	0.4275		0.5204	0.34	0.572	0.97	22.3	31.03	28.2	35.9	9.3	15.02	7.97	91	181	0.24	61.7	38.5	1.309	0.985	0.1799	0.0091	0.533	0.982	0.0141	0.719	1.196			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular thin plate weir with side sections acting as broad-crested above notch full. Installed for monitoring the Shropshire Groundwater Scheme.	Rectangular notch, 1m wide, 0.63m deep with side contractions, which act as broad-crested weirs above notch full. Shares a recorder hut with the gauge on the adjacent River Tern gauge (54044), confluence 10m d/s. Site used for monitoring the Shropshire Groundwater Scheme. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	High flows at the gauging station are within bank, but bypassing occurs upstream at a much lower level due to the way the site has been constructed to share a gauge hut. No gaugings at higher levels due to flashy regime and hard to access the site due to bypass flows. No gaugings available to verify rating above structure full.	Significant drop in flow on Dec 2011 caused by in-channel operations. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Small, low relief catchment instrumented for monitoring the Shropshire Groundwater Scheme. Solid geology: argillaceous rocks of the Lower Lias and Mercia Mudstones. Extensively overlain by Boulder Clay and glacial sand and gravel.	Baseflow dominated regime but can be responsive. Minimal flow augmentation from WRW. Affected by irregular discharges and storage effects of Sandford Hall Lake.
54053	Corve at Ludlow	164.0	SO510752	351000.0	275200.0	52°22'21.5043"N 2°43'16.1744"W	52.37264	-2.72116	Corve	Ludlow	81.4	EA-WM		54	1970-01-01	1976-12-31	VA			17.7	true	false	false	false	false	false	false	false	false	false	false	false	false		1972-04-01	1976-04-30	1.01	0.054	1975-09-16	1975-09-16	19.66	1972-12-06	1972-12-06	0.096	0.297	0.542	2.001	3.286	0.57	1491	1491	100.0				86.0	107.5	171.4	257.6	533.6	802	777	0.0849	0.394	0.4711	0.0051	0.0347	0.0711	0.4546	0.4526	0.0134	0.0073			0.6384	0.3616	0.0254		0.1146	0.35	0.598	0.996	78.3	31.54	32.8	42.5	10.5	36.7	19.01	182	199	0.12	87.6	162.81	0.703	0.811	0.0752	0.007	0.508	0.843	0.0074	0.717	0.845			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Closed in 1976.	Velocity area station. Closed in 1976.
54054	Onny at Onibury	235.0	SO45477898	345470.0	278980.0	52°24'21.9443"N 2°48'10.7826"W	52.4061	-2.803	Onny	Onibury	98.0	EA-WM		54	1971-01-01	1976-12-31	VA			21.3	true	false	false	false	false	false	false	false	false	false	false	false	false		1972-05-01	1976-04-30	2.188	0.185	1975-08-05	1975-08-05	51.61	1972-12-06	1972-12-06	0.248	0.638	1.271	4.366	6.814	0.48	1461	1461	100.0				96.7	153.7	228.3	380.6	526.6	842	821	0.1047	0.2061	0.6127	0.0534	0.0139	0.0967	0.2699	0.5466	0.0754	0.0106			0.7787	0.2213	0.02		0.4153	0.37	0.585	0.995	124.4	26.75	32.2	42.5	10.1	34.36	19.65	250	154	0.21	96.9	227.53	0.557	0.859	0.0505	0.0059	0.521	0.734	0.0053	0.68	0.756			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Closed in 1976.	Velocity area station. Closed in 1976.
54057	Severn at Haw Bridge	9895.0	SO8449127878	384491.0	227878.0	51°56'57.0352"N 2°13'37.4119"W	51.94918	-2.22706	Severn	Haw Bridge	6.0	EA-WM	2057	54	1971-01-01		VA	460.0		4.4	true	true	true	true	false	false	false	true	true	false	true	false	false	SRPGEI	1971-07-01	2023-09-30	111.418	11.3	1995-08-05	1995-08-05	1340.0	2007-07-23	2007-07-23	21.1	41.3	68.0	272.0	377.4	0.57	19085	18962	99.356	1972-03-05		484.025	7.4	49.0	110.0	303.5	826.2	815	793	0.1228	0.2983	0.476	0.0139	0.0759	0.0851	0.3839	0.4461	0.0238	0.0566	0.1584	0.0106	0.5302	0.3007	0.1049	0.0084	0.2455	0.32	0.513	0.978	73.2	35.9	33.3	42.5	10.3	286.61	134.61	145	119	0.04	8.4	9885.46	1.173	0.916	0.106	0.0269	0.716	0.755	0.0347	0.838	0.789			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station downstream of Warwickshire Avon inflow that is tidally affected and subject to heavily regulated/modified flows owing to PWS exports and effluent returns - provides the lowest gauge on the Severn.	Haw Bridge is a velocity-area measurement station located on the B4213. It is downstream of the Warwickshire Avon inflow and is the lowest flow gauge on the River Severn. The site is impacted by the tide, however flows values will not account for this. Tidal influences are taken into account by the Deerhurst ADCP gauge approximately 2.21miles upstream (54110).	Gauging possible from bridge up until bankfull. Difficult to access at times of very high flows if access to the bridge and road are restricted. Previously at very high flows gauging have been conducted along the B4213 and within the channel itself. There remains a high percentage of error with high flow gaugings due to the complexity of the site. Hysteresis observed during high flow events. The site is tidal influenced, however it is not possible to measure this, at this gauge. Deerhurst approximately 2.21 miles further upstream is able to account for the resultant change in velocity and flow direction as it is an ADCP site. The site itself can be prone to weed growth and bed movement, as well as siltation problems with the stilling tube on site. Multiple ratings have been applied across the period of record. Ratings applied are a compromise between allowing for bed movement and making the best use of out of bank gaugings. Most recent rating fits well to corresponding out of bank gaugings.	July 2007 peak exceeded limits of rating curve by a large margin, all flows for event estimated using National Flow Forecasting System hydrodynamic model. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Very large, diverse catchment, lowest on the Severn. Paleozoic slates in Welsh headwaters, Permo-Triassic sediments in middle reaches and Jurassic and Liassic clays in the Avon basin.	Heavily regulated/modified flows; compensation flows from Llyn Clywedog and the Shropshire Groundwater Scheme, with PWS exports (to Liverpool, West Midlands and Gloucestershire) and effluent returns (chiefly to Avon, Stour (Worcs.) and Severn at Worcester). The flows are affected by tides.
54058	Stoke Park Brook at Stoke Park	14.3	SJ644260	364400.0	326000.0	52°49'49.2188"N 2°31'47.3846"W	52.83034	-2.52983	Stoke Park Brook	Stoke Park	58.6	EA-WM		54	1972-01-01	1978-12-31	FV			40.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1972-04-01	1978-09-30	0.094	0.001	1976-08-13	1976-08-22	2.112	1973-08-06	1973-08-06	0.022	0.04	0.062	0.162	0.263	0.57	2374	2369	99.789				57.6	67.5	84.0	111.1	139.2	714	692	0.0411	0.3803	0.5621		0.0165	0.0149	0.4803	0.4868	0.0008	0.0172	0.6462	0.3538			0.1104		0.1079	0.34	0.574	0.982	27.8	30.96	28.2	34.9	9.5	7.76	4.29	86	269	0.36	57.6	14.38	0.459	0.803	0.0737	0.0087	0.367	1.281	0.0047					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir which was part of Shropshire Groundwater Scheme network. Closed in 1978.	Flat V weir.			Agricultural, low relief catchment.
54059	Allford Brook at Allford	10.2	SJ654223	365400.0	322300.0	52°47'49.7194"N 2°30'52.5393"W	52.79714	-2.51459	Allford Brook	Allford	56.0	EA-WM		54	1972-01-01	1978-12-31	FV			50.0	true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1972-04-01	1978-09-19	0.061	0.007	1976-07-17	1976-07-18	3.0	1973-08-05	1973-08-07	0.013	0.031	0.046	0.094	0.127	0.7	2363	2306	97.588				56.3	64.8	77.5	87.1	121.5	697	672	0.0325	0.6131	0.3185		0.0359	0.0112	0.7322	0.2491		0.0042	0.9409	0.0591					0.2211	0.34	0.788	1.0	16.7	19.54	28.5	34.3	9.7	6.5	3.38	76	233	0.37	56.3	10.18	0.587	0.932	0.0996	0.0021			0.0182	0.677	0.471			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir which was part of Shropshire Groundwater Scheme network. Closed in 1979.	Flat V weir.			Agricultural, low relief catchment.
54060	Potford Brook at Sandyford Bridge	25.0	SJ63482219	363480.0	322190.0	52°47'45.7027"N 2°32'35.0021"W	52.79603	-2.54306	Potford Brook	Sandyford Bridge	55.7	EA-WM	2060	54	1972-01-01	2012-09-30	FV			30.0	true	false	false	false	false	false	false	false	false	false	false	false	false	G	1972-03-01	2012-12-31	0.143	0.016	1976-07-11	1976-07-12	5.34	2012-09-24	2012-09-24	0.044	0.07	0.093	0.236	0.362	0.66	14916	13364	89.595				57.9	63.3	72.9	89.8	195.7	682	677	0.0536	0.5547	0.3673	0.0012	0.0213	0.0458	0.7525	0.1955		0.0047	1.0				0.1544		0.5284	0.34	0.645	0.998	24.7	26.78	28.4	36.6	9.4	10.41	5.11	77	140	0.35	57.9	22.07	0.665	0.82	0.1335	0.0055	0.338	0.792	0.0013					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Prefabricated Flat V Crump profile weir installed for the Shropshire Groundwater investigation.	Prefabricated flat V Crump profile weir, initially installed for the Shropshire Groundwater investigation (low flows). Site closed 1979-86 and repositioned in 1987 to avoid backing up. Removed from peak flows dataset in May 2016 (WINFAP Files v4). Station closed in 2012.	Drowns at low flows due to seasonal weed growth. Heavy siltation at weir structure, as a result the weir has been permanently drowned since summer 2011. Problems gauging at high flows above 0.2m stage.	Low flows may be significantly affected when the Severn augmentation is in operation. Heavy siltation with weir becoming permanently drowned out from summer 2011.	Flat catchment on predominantly Sherwood S'st overlain by intermittent Boulder Clay and glacial sands and gravel.	Baseflow dominated but can be responsive. Low flows may be significantly affected when the Severn augmentation is in operation.
54061	Hodnet Brook at Hodnet	5.1	SJ628288	362800.0	328800.0	52°51'19.4374"N 2°33'14.0254"W	52.8554	-2.5539	Hodnet Brook	Hodnet	61.4	EA-WM		54	1972-01-01	1977-12-31	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	E	1972-05-01	1977-05-25	0.018	0.002	1975-10-16	1975-10-27	0.202	1977-02-24	1977-02-24	0.005	0.009	0.014	0.033	0.044	0.75	1851	1790	96.704				65.9	83.4	139.7	170.2	207.0	706	722	0.1968	0.3911	0.3804		0.0316	0.2043	0.4735	0.311	0.003	0.0082	0.9249			0.0751	0.0364		0.0907	0.34	0.675	0.909	87.0	30.0	27.8	36.8	9.7	5.85	3.52	134	83	0.34	66.1	4.57	0.176	0.654	0.0181	0.0088	0.522	0.38	0.0085	0.545	0.307			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir, closed in 1977 - part of the Shropshire Groundwater Scheme network.	Shallow flat V weir closed in 1977. Stream dry in summer. Installed for Shropshire Groundwater investigation.	Chart only data. Digitised from 1990-95. Theoretical rating, no gaugings undertaken.		Agricultural, low relief catchment.	Subdued response. Site is downstream of a notable abstraction which reduces the flow to zero.
54062	Stoke Brook at Stoke on Tern	13.7	SJ637280	363700.0	328000.0	52°50'53.7710"N 2°32'25.5892"W	52.84827	-2.54044	Stoke Brook	Stoke on Tern	58.8	EA-WM	2062	54	1972-01-01	1983-12-31	FV		1.1		true	false	false	false	false	false	false	false	false	false	false	false	false	GEIN	1972-05-01	1983-12-31	0.085	0.009	1976-07-03	1976-07-03	3.0	1973-08-06	1973-08-08	0.039	0.06	0.073	0.129	0.159	0.75	4262	4119	96.645				58.2	74.2	92.5	116.8	134.0	728	698	0.0459	0.3755	0.5187	0.0009	0.0542	0.028	0.4919	0.4224	0.0067	0.0433	0.7932	0.2068			0.2618		0.0014	0.34	0.757	0.939	26.4	20.92	28.3	35.6	9.5	8.93	5.25	93	262	0.35	58.2	10.93	0.59	0.882	0.0986	0.0119	0.356	0.711	0.0225	0.664	0.647			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Prefabricated Flat V Crump profile weir installed for the Shropshire Groundwater Investigation. Closed in January 2012.	Prefabricated flat vee crump profile weir, 1.6m wide, installed for the Shropshire Groundwater investigation - low flow measurement. Closed in January 2012.	Drowns at high flows. No gaugings.		Agricultural catchment with argillaceous rock of the Lower and Middle Lias in the headwaters and mixed Permian and Triassic Sandstones within the lower catchment. Overlain by intermittent Boulder Clay and glacial sands and gravels.	Base flow affected by groundwater pumping.
54063	Stour (Worcs) at Prestwood Hospital	89.9	SO86708615	386700.0	286150.0	52°28'23.2243"N 2°11'50.0223"W	52.47312	-2.19723	Stour (Worcs)	Prestwood Hospital	51.1	EA-WM	2063	54	1971-01-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	GEI	1972-08-01	2023-09-30	0.969	0.223	2003-06-16	2003-06-16	25.51	1997-06-26	1997-06-26	0.338	0.536	0.693	1.756	2.416	0.6	18688	14575	77.991				52.8	86.0	134.0	197.3	300.7	724	726	0.112	0.0814	0.1936	0.0004	0.59	0.0709	0.152	0.1858	0.001	0.5878	0.2087			0.7913	0.0028		0.072	0.31	0.546	0.989	64.4	32.53	32.9	41.3	10.7	22.25	12.65	137	290	0.13	52.8	88.87	0.404	0.856	0.0474	0.2996	0.858	0.869	0.4152	0.923	0.885			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging a predominantly urban catchment.	Original secondary velocity area station replaced in 1995 with a Flat V Crump profile weir, 11m wide, 1:20 cross slopes, wing walls at 0.9m in a good reach.	Contained on rb, possibly bypassed on lb behind the hut. Good site at low flows, with the rating based on the theoretical for the Flat V weir. Above about 0.5m the weir starts to drown, with very few gaugings above this level. Gaugings that are present above 0.5m suggest the rating is overestimating flows.	Pre-2000 minima were significantly higher - causation under review. Magnitude of July 2007 flood event subject to considerable overestimation - flows under review.	A largely urban catchment, draining the western suburbs of Birmingham. Underlying geology predominantly argillaceous and sandstone rocks of the Carboniferous with Triassic Sandstones within the lower third of the catchment.	Gw for PWS significantly augments low flows as effluent.
54065	Roden at Stanton	210.0	SJ565241	356500.0	324100.0	52°48'45.6417"N 2°38'48.5602"W	52.81268	-2.64682	Roden	Stanton	63.0	EA-WM		54	1973-01-01	1979-12-31	VA			8.1	true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1973-05-01	1979-05-31	1.422	0.162	1976-08-26	1976-08-26	12.51	1974-02-11	1974-02-11	0.301	0.561	0.946	3.047	4.335	0.65	2222	2177	97.975				62.0	79.4	90.5	110.2	207.0	723	703	0.0482	0.3812	0.5191	0.0141	0.0341	0.0453	0.446	0.4612	0.0254	0.0178	0.1146		0.3114	0.574	0.3941	0.072	0.4026	0.34	0.614	0.977	22.8	27.35	28.9	36.2	9.4	33.7	18.83	94	108	0.08	62.0	213.22	1.472	1.088	0.2336	0.009	0.516	0.889	0.0106	0.703	0.917			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station closed in 1979.	Velocity area station, closed in 1979. Part of Shropshire Groundwater Scheme network.		Predominantly Triassic Mudstones and Lower Lias. Blanketed extensively by Boulder Clay and morainic sand and gravel.
54066	Platt Brook at Platt	15.7	SJ628229	362800.0	322900.0	52°48'08.5110"N 2°33'11.5974"W	52.80236	-2.55322	Platt Brook	Platt	60.0	EA-WM		54	1973-01-01	1983-12-31	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	GIN	1973-06-01	1983-12-31	0.073	0.009	1976-07-03	1976-07-03	0.678	1981-12-30	1981-12-30	0.029	0.041	0.059	0.129	0.168	0.74	3866	3866	100.0				59.5	66.0	73.5	88.9	194.6	682	674	0.0387	0.5115	0.4137	0.0016	0.0324	0.0392	0.7422	0.2138		0.0041	1.0				0.2482		0.4124	0.34	0.668	0.998	23.0	25.53	28.4	36.7	9.4	9.25	4.55	77	158	0.35	59.5	12.32	0.645	0.829	0.1241	0.0041			0.0016					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir, installed for Shropshire Groundwater Investigation.	Prefabricated Flat V Crump profile weir, 2m wide.		Flat catchment on predominantly Permian Sandstones overlain by Boulder Clay and glacial sands and gravel.		Very limited artificial disturbances to the natural flow regime.
54067	Smestow Brook at Swindon	81.3	SO86129056	386120.0	290560.0	52°30'45.8952"N 2°12'21.4285"W	52.51275	-2.20595	Smestow Brook	Swindon	60.4	EA-WM		54	1973-01-01	1978-12-31	VA			13.5	true	false	false	false	false	false	false	false	false	false	false	false	false		1974-01-01	1978-11-27	0.538	0.1	1976-09-06	1976-09-06	7.058	1976-09-25	1976-09-25	0.176	0.289	0.41	1.006	1.376	0.62	1792	1792	100.0				59.6	85.3	117.4	153.3	233.3	681	678	0.0702	0.2665	0.2363	0.0011	0.3964	0.0372	0.4273	0.1614	0.001	0.371	0.8449			0.1551	0.135		0.3724	0.31	0.52	0.981	40.4	34.04	30.4	37.3	10.8	23.6	11.36	118	277	0.08	59.6	79.34	0.552	1.056	0.0794	0.1883	0.841	1.379	0.2605	0.926	1.401			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, closed in 1978.	Velocity area station, closed in 1978.			Low relief. Significant urban area (Wolverhampton). Predominantly Triassic Sandstones.
54069	Springs Brook at Lower Hordley	10.4	SJ387297	338700.0	329700.0	52°51'40.6053"N 2°54'42.9552"W	52.86128	-2.91193	Springs Brook	Lower Hordley	81.0	EA-WM		54	1974-01-01	1978-12-31	FV			60.0	true	false	false	false	false	false	false	false	false	false	false	false	false		1974-02-01	1978-09-17	0.057	0.003	1976-09-02	1976-09-06	0.749	1974-11-21	1974-11-21	0.01	0.019	0.031	0.127	0.19	0.65	1690	1690	100.0																																																						gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir. Closed in 1978. Part of the Shropshire Groundwater Scheme network.	Flat V weir.
54070	War Brook at Walford	22.5	SJ432198	343200.0	319800.0	52°46'22.0369"N 2°50'36.1567"W	52.77279	-2.84338	War Brook	Walford	68.3	EA-WM		54	1974-01-01	1983-12-30	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	GIN	1974-02-01	1983-12-31	0.144	0.0	1976-06-25	1976-09-20	1.151	1978-12-29	1978-12-29	0.005	0.03	0.075	0.377	0.551	0.57	3621	3621	100.0				66.4	79.0	87.4	102.1	119.9	694	686	0.036	0.4781	0.4628		0.0167	0.0249	0.4462	0.5102		0.0068	0.4425			0.5575	0.188		0.7858	0.34	0.572	0.867	20.3	28.62	28.8	35.8	9.4	10.82	5.95	89	189	0.18	66.4	22.31	0.903	0.995	0.143	0.003			0.0052	0.614	0.738			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profiled weir, installed for Shropshire Groundwater Investigation.	Prefabricated Flat V Crump profile weir, 2m wide.		Very flat catchment with meres puddled on peat and Boulder Clay. Some glacial sands and gravels.		Very limited impact of artificial influences on the flow regime.
54080	Severn at Dolwen	174.0	SN9894985181	298949.0	285181.0	52°27'18.7267"N 3°29'18.6706"W	52.4552	-3.48852	Severn	Dolwen	145.8	NRW	2118	54	1975-01-01		CC			9.7	true	true	true	true	false	false	false	false	false	false	false	false	false	SRE	1977-09-01	2023-09-30	6.836	0.011	2000-07-31	2000-07-31	161.0	1998-03-06	1998-03-06	0.995	2.63	3.98	16.89	22.03	0.47	16831	15847	94.154	1977-12-26		96.215	147.2	237.6	343.2	462.3	736.4	1548	1611	0.2018	0.0024	0.7039	0.0513	0.0066	0.2016	0.0516	0.6475	0.0779	0.0066			1.0			0.0122	0.1116	0.64	0.448	0.928	166.7	40.92	52.5	68.9	11.1	27.25	15.13	349	75	0.13	147.3	174.42	0.386	0.83	0.0294	0.0014			0.0026					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound triangular profile weir. Flow regime influenced by regulation releases at low flows (from 1968).	Compound triangular profile weir, replacing informal station in 2000.	Weir crests 7.1m and 12.0m (total), wing walls at 1.6m. Designed to permit fish movements and counting (non-standard profile due to fish sensors on downstream face of weir). Should contain the 1% probability flood. Cableway approx 60m for floodplain flows. 10km d/s of Clywedog reservoir so control patterns dominant at low flow. One peak flow rating across period of record, provides a reasonable fit to gaugings.	Missing data for period between 1983-1986. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A high relief, wet and responsive catchment on Silurian shales, mudstones and slates with Boulder Clay on valley sides. Land use is pasture, forest and moorland.	Approximately 30% of the catchment draining to Dolwen is upstream of Clywedog Reservoir. Flow regime influenced by regulation releases at low flows (from 1968).
54081	Clywedog at Bryntail	49.0	SN9133086804	291330.0	286804.0	52°28'05.9623"N 3°36'04.0539"W	52.46832	-3.60113	Clywedog	Bryntail	212.1	NRW	2109	54	1977-01-01		FV		47.0		true	false	false	false	false	false	false	false	false	false	false	false	false	SR	1977-06-01	2023-09-30	2.426	0.011	1978-05-24	1978-05-25	34.85	2002-02-25	2002-02-25	0.217	0.563	1.61	5.754	9.961	0.42	16923	16602	98.103				207.5	296.5	385.9	484.2	621.4	1775	1917	0.2142	0.0014	0.6137	0.0972	0.0024	0.253	0.0208	0.5439	0.1295	0.0029			1.0			0.0229		0.66	0.435	0.774	160.9	43.76	61.1	80.4	12.1	17.06	9.07	388	96	0.19	209.0	49.1	0.333	0.961	0.0282	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir, immediately below Clywedog reservoir. Installed for the purpose of measuring compensation and regulation releases.	Flat V weir, immediately below Clywedog reservoir. Installed for the purpose of measuring compensation and regulation releases.	Flat V weir, 16m wide; 1:20 cross-slope.	Periods of missing data through November 2016 and February 2017 represent periods when Severn Trent Water carried out maintenance work on the dam. Penstock valves were opened which caused flow to bypass the weir.	Steep, wet catchment draining Ordovician and Silurian shales and slates. Substantially Drift free. Most tributaries afforested on valley sides.	Reservoir drawn down over winter months to moderate flood peaks.
54083	Crow Brook at Horton	16.7	SJ678141	367800.0	314100.0	52°43'24.8944"N 2°28'41.4938"W	52.72358	-2.47819	Crow Brook	Horton	60.2	EA-WM		54	1978-01-01	1983-12-31	FV				true	false	false	false	false	false	false	false	false	false	false	false	false		1978-07-01	1983-12-31	0.136	0.044	1979-07-29	1979-07-29	0.89	1981-12-30	1981-12-30	0.072	0.1	0.119	0.212	0.27	0.73	2010	2010	100.0																																																						gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A Flat V Crump profile weir installed for Shropshire Groundwater Investigation.	Flat V Crump profile weir, 8m wide; cross-slope 1:10.		June 1982 peak under review.	Catchment of moderate relief whose headwaters are in Telford and drain glacial sand and gravel overlying Permian Sandstones. Lower reaches clad in Boulder Clay.
54084	Cannop Brook at Parkend	31.5	SO6167707481	361677.0	207481.0	51°45'52.8797"N 2°33'24.1685"W	51.76469	-2.55671	Cannop Brook	Parkend	37.7	EA-WM	2124	54	1978-01-01	1983-12-31	C				true	false	false	false	false	false	false	false	false	false	false	false	false	EN	1978-08-01	1983-12-31	0.334	0.027	1978-12-01	1978-12-01	6.742	1979-12-27	1979-12-27	0.056	0.097	0.189	0.79	1.065	0.59	1979	1979	100.0				37.1	77.6	142.3	205.3	229.0	942	914	0.7681	0.0401	0.1092		0.0768	0.8546	0.0318	0.0628	0.0077	0.0413		0.0172		0.9828				0.33	0.501	0.95	105.7	28.37	38.6	52.3	11.0	9.66	4.84	141	156	0.16	37.1	28.9	0.247	0.768	0.022	0.0153	0.625	1.035	0.0301	0.714	0.923			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Catchment in the Forest of Dean, with a mostly natural flow regime.	Crump profile weir, 3m wide, 1m wingwalls, set in a wider channel.		Closed between 3/86 and 2/92. Similar minimum flows in 1982 and 1983.	Moderately steep catchment entirely within the Forest of Dean; drains the Upper Coal Measures - principally s'st with thin shale and coal horizons with little Drift cover.	Substantially natural flow regime (but sewage effluent from Parkend).
54085	Cannop Brook at Cannop Cross	10.4	SO609115	360900.0	211500.0	51°48'02.7651"N 2°34'06.3335"W	51.80077	-2.56843	Cannop Brook	Cannop Cross	81.0	EA-WM		54	1979-01-01	1983-12-31	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1979-04-01	1983-12-31	0.134	0.013	1982-09-18	1982-09-19	1.745	1979-12-27	1979-12-27	0.019	0.041	0.081	0.307	0.423	0.61	1736	1736	100.0				72.2	101.9	156.8	216.3	229.0	908	910	0.8298	0.0289	0.0866		0.0458	0.9151	0.0134	0.0424	0.0056	0.0236				1.0				0.33	0.508	0.98	109.8	27.54	38.9	51.8	11.2	4.85	2.62	157	160	0.13	72.2	10.59	0.173	0.895	0.0168	0.01	0.808	1.068	0.0125	0.914	1.062			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A Flat V Crump profile weir, in the Forest of Dean. A very natural and responsive regime.	Flat V Crump profile weir, 2m wide; cross-slope 1:10.			Small, moderately steep, afforested catchment in the Forest of Dean; drains Upper Carboniferous s'sts.	Natural, responsive regime.
54087	Allford Brook at Childs Ercall	4.7	SJ66702278	366700.0	322780.0	52°48'05.5481"N 2°29'43.3096"W	52.80154	-2.49536	Allford Brook	Childs Ercall	66.0	EA-WM	2151	54	1973-01-01	2012-01	VN				true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1973-01-01	2012-01-26	0.015	0.0	1973-01-01	2011-12-10	0.312	2007-06-25	2007-06-25	0.001	0.004	0.009	0.035	0.05	0.65	14270	12827	89.888				62.6	67.3	75.9	81.9	84.7	694	663	0.041	0.5523	0.3781		0.0286	0.0203	0.8405	0.1303		0.0029	1.0						0.15	0.34	0.863	1.0	15.2	15.29	28.5	33.8	9.7	2.93	1.59	75	252	0.51	66.8	2.92	0.582	0.866	0.1083	0.0043			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station closed in 26/01/2012.	90 degree Vee notch with side contractions set in an access chamber to a culverted section.	Standard and tipping bucket raingauges adjacent.	Station closed 26/01/12 due to problems calibrating the rating caused by H&S issues gauging at site.	Agricultural catchment on Bunter Sandstone overlain by Boulder Clay in the lower catchment.	Close to a Shropshire GW scheme abstraction point.
54088	Little Avon at Berkeley Kennels	134.0	ST6823298741	368232.0	198741.0	51°41'11.4743"N 2°27'39.3586"W	51.68652	-2.46093	Little Avon	Berkeley Kennels	7.0	EA-WX	542349	54	1979-01-01		VA			18.0	true	false	false	false	false	false	false	true	false	false	false	false	false	PGE	1978-11-01	2023-09-30	1.226	0.114	1998-08-10	1998-08-10	39.71	2000-10-29	2000-10-29	0.234	0.43	0.712	2.57	3.898	0.55	16405	15110	92.106				5.6	26.8	77.3	191.9	249.5	823	806	0.1122	0.2908	0.534		0.0522	0.1379	0.4106	0.4123	0.0023	0.0348	0.2473	0.1755	0.4206	0.1566	0.0224		0.1065	0.35	0.521	0.985	79.0	33.54	32.8	44.2	10.3	25.78	14.32	93	308	0.07	5.6	133.07	0.555	0.684	0.0692	0.0108	0.586	0.914	0.0149	0.727	0.926			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a responsive catchment with some artificial influences.	Velocity area station replaced, in 2000, earlier gauging station which suffered from afflux from ornamental bridge upstream. New site is 10m upstream of the bridge in rectangular concrete channel; gauged from road bridge.	Rating is stable for medium flows. Not great for high or low flows, high flows are influenced by flood gates downstream, which are in place to cope with the large tidal range of the River Severn and extreme events.	Daily mean flow data missing from June 2002 to January 2004.	Responsive catchment with steep headwaters which drain complex sequence of limestones, sandstones and clays of Lower and Middle Jurassic; flat Vale of Berkeley is underlain by Cambrian inlier, Keuper Marl and Lias clays. Land-use is rural.	Moderate influence from public water supply abstractions and spray irrigation.
54089	Avon at Bredon	2674.0	SO9206537238	392065.0	237238.0	52°02'00.5657"N 2°07'01.4882"W	52.03349	-2.11708	Avon	Bredon	9.0	EA-WM	2128	54	1979-01-01		IV				true	false	false	false	false	false	false	true	false	false	false	false	false	SPGEI	1988-05-01	2023-09-30	17.644	1.598	1995-08-28	1995-08-28	133.0	1989-12-15	1989-12-15	3.855	6.84	9.846	42.48	63.0	0.55	12936	9213	71.22				10.0	42.7	90.1	146.6	330.2	670	652	0.1087	0.4319	0.3515	0.0	0.099	0.0513	0.4922	0.3699	0.0044	0.0781	0.031	0.0077	0.5612	0.4001	0.1196	0.0033	0.1731	0.29	0.399	0.977	38.8	43.27	32.6	40.5	10.9	168.58	89.78	94	284	0.04	10.0	2700.21	1.077	0.926	0.1186	0.0387	0.723	1.068	0.0439	0.841	1.116			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A side-looking index velocity station across broad reach of river. Is liable to overtopping especially on the left bank. For very high flow it is best to use 54002.	Ultrasonic single path instrument installed in 1979, unsuccessful experiment. Replaced in 1988 by multipath cross configuration US in broad reach. River inundates hams on lb extensively during floods. For very high flows use 54002.	Flows are valid to bankfull (but US has under-measured, data being reassessed). Due to an embankment on the left bank, it is impossible to have accurate measurement for the flows after the embankment and whether some of the water is pooled.		Large catchment of low relief, draining argillaceous rocks almost exclusively. Contains some large towns but chief land use is agriculture.	Extensive flow modification by abstractions and returns. Responsive regime.
54090	Tanllwyth at Tanllwyth Flume	0.92	SN8423387655	284233.0	287655.0	52°28'28.2357"N 3°42'21.0450"W	52.47451	-3.70585	Tanllwyth	Tanllwyth Flume	357.0	CEHW		54	1973-01-01		FL				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1973-10-01	2023-09-29	0.065	0.001	1976-09-08	1984-08-27	1.362	1991-02-22	1991-02-22	0.009	0.018	0.03	0.159	0.241	0.31	18261	18179	99.551				347.7	381.0	485.5	591.7	640.7	2270	2462	0.6378		0.3149	0.0239		0.8468		0.1043	0.0489				1.0					0.66	0.328	1.0	155.0	52.3	76.1	102.7	13.5	2.58	1.2	482	108	0.75	351.3	1.1	0.099	0.672	0.008	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	IH/UKCEH research catchment. Responsive natural flow regime.	Catchment nested within 54022 Severn at Plynlimon Flume. Rainfall, evaporation and soil moisture estimates also available from dense monitoring network.	Rectangular, side contracted critical depth flume designed to gauge streams which have supercritical flow regimes. U/s sediment trap for sediment yield studies assists in maintaining performance.	Primary 15 minute dataset available.	Steep and very wet (~2500mm). Mature coniferous plantations cover catchment. Geology: Silurian shales and grits.	Responsive natural flow regime.
54091	Severn at Hafren Flume	3.58	SN8429687733	284296.0	287733.0	52°28'30.8071"N 3°42'17.8050"W	52.47522	-3.70495	Severn	Hafren Flume	357.0	CEHW		54	1973-01-01		FL				true	true	false	true	false	false	false	false	false	false	false	false	false	N	1976-01-01	2023-09-29	0.238	0.009	1976-09-04	1976-09-07	4.642	2012-06-08	2012-06-08	0.032	0.079	0.132	0.54	0.8	0.38	17439	17191	98.578	1976-01-01		5.915	354.8	404.0	549.8	617.9	673.5	2227	2513	0.4111		0.3031	0.2554	0.0023	0.4401		0.0828	0.4742	0.003			1.0					0.66	0.304	1.0	159.4	54.11	72.9	98.0	13.4	4.43	2.25	529	131	0.4	354.8	3.46	0.138	0.941	0.0118	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular, side contracted critical depth flume. IH/UKCEH research catchment. Natural flow regime.	Rectangular, side contracted critical depth flume designed to gauge streams which have supercritical flow regimes. Catchment nested within 54022 Severn at Plynlimon flume. Primary 15 minute dataset available. Rainfall, evaporation and soil moisture estimates also available from dense monitoring network.	Drowning may occur following big floods owing to sediment deposited d/s. Protected flow site with no gauging or rating information available.		Very wet. Palaeozoic shales, grits and mudstones. Upper third has rounded, peat moorland headwaters; lower two thirds has steep, incised valleys with mature conifer plantations.	Responsive; natural regime to within 10% at Q95.
54092	Hore at Hore Flume	3.17	SN8451487266	284514.0	287266.0	52°28'15.8662"N 3°42'05.6730"W	52.47107	-3.70158	Hore	Hore Flume	336.0	CEHW		54	1973-01-01		FL				true	true	false	true	false	false	false	false	false	false	false	false	false	N	1973-10-01	2023-09-29	0.209	0.002	2004-05-30	2004-05-30	4.729	2012-06-08	2012-06-08	0.024	0.058	0.103	0.495	0.756	0.31	18261	17953	98.313	1973-01-01		6.287	336.2	387.8	497.9	666.4	736.4	2323	2536	0.6148		0.2934	0.0815		0.7182		0.2254	0.0564				1.0			0.0074		0.66	0.329	1.0	214.3	52.22	73.3	98.2	13.2	4.08	2.18	514	96	0.47	339.5	3.19	0.019		0.0015	0.0			0.0			2003..2004		gdf;gmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular, side contracted critical depth flume. IH/UKCEH research catchment. Natural flow regime.	Rectangular, side contracted critical depth flume designed to gauge streams which have supercritical flow regimes. Catchment nested within 54022 Severn at Plynlimon flume. Primary 15 minute dataset available. Rainfall, evaporation and soil moisture estimates also available from dense monitoring network.	Drowning may occur following big floods owing to sediment deposited d/s. Protected flow site with no gauging or rating information available.		Very wet with steep gradients. Palaeozoic grits, shales and mudstones. Highest and lateral fringes of catchment are peat moorland. The remaining catchment area had mature coniferous forest until 1985, when the lower two thirds was clear felled. Replanting has taken place.	Natural to within 10% at the Q95.
54094	Strine at Crudgington	95.65	SJ64051754	364050.0	317540.0	52°45'15.3632"N 2°32'02.7275"W	52.75427	-2.53409	Strine	Crudgington	50.0	EA-WM	2170	54	1982-01-01	2009-07-06	EM				true	false	false	false	false	false	false	false	false	false	false	false	false	GEI	1982-11-01	2009-07-05	0.673	0.122	1995-07-23	1995-07-23	6.04	1991-01-10	1991-01-10	0.228	0.363	0.489	1.305	1.77	0.67	9744	8962	91.975				49.9	56.0	70.4	121.1	183.8	680	678	0.1011	0.4272	0.2608	0.0017	0.1927	0.0579	0.5493	0.2294	0.0025	0.1575	0.7549			0.2451	0.2106	0.1602	0.2416	0.35	0.634	0.974	25.8	28.15	29.0	36.1	10.0	19.32	9.81	79	313	0.31	49.9	95.66	1.162	0.792	0.1677	0.0645	0.72	1.121	0.0944	0.851	1.096			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	An electromagnetic gauge station which does suffer from modification due to water reclamation work.	Electromagnetic gauge, using a bubbler device for level measurement, in trapezoidal channel.	Very low velocities experienced. Replaced poor weed-affected open channel site in 1981.	Early record not available.	Very flat catchment draining Weald Moors. Headwaters dominated by argillaceous Carboniferous rocks. Lower reaches mostly Permian Sandstone overlain by mixed superficial deposits. Urban areas include Newport and the northern part of Telford.	Substantial modification to flow regime from WRW discharges.
54095	Severn at Buildwas	3717.0	SJ64550440	364550.0	304400.0	52°38'10.2550"N 2°31'30.9458"W	52.63618	-2.52526	Severn	Buildwas	36.0	EA-WM	2134	54	1984-01-01		US	285.0			true	false	false	false	false	false	false	true	false	false	false	false	false	SRPGEI	1984-03-01	2023-09-30	60.812	8.36	2005-09-21	2005-09-21	663.8	2022-02-22	2022-02-22	11.6	19.91	33.9	151.0	205.0	0.54	14458	14458	100.0				34.1	69.2	137.9	376.9	826.2	967	946	0.127	0.2104	0.5796	0.03	0.0402	0.0915	0.2808	0.5515	0.046	0.0251	0.2359	0.0205	0.5888	0.1548	0.1229	0.02	0.4281	0.39	0.526	0.975	92.3	34.44	34.8	44.9	9.7	181.54	92.61	186	88	0.07	34.2	3722.68	1.258	0.836	0.1138	0.0097	0.63	0.581	0.0161	0.787	0.578			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A Ultrasonic gauging station which can be affected by substantial modifications during low flows.	Multiple US cross-configuration gauging station.	Following refurbishment of the ultrasonic gauge in 2005, only lower racks working until March 2008, possible over-estimation of high flows under review. Flows fully contained by Buildwas Bridge and floodbanks.		Large diverse catchment. Geology largely mixed Palaeozoic formations with moorland and forestry land use in the wet headwaters. Permian Sandstones dominate in the lower reaches with extensive Drift cover of Boulder Clay and sands and gravels and mixed farming landuse.	Substantial modifications of lowest flows by Clywedog and Vyrnwy Reservoirs and Shropshire Groundwater Scheme; otherwise artificial effects modest.
54096	Hadley Brook at Wards Bridge	53.43	SO87026314	387020.0	263140.0	52°15'58.5504"N 2°11'29.8285"W	52.26626	-2.19162	Hadley Brook	Wards Bridge	21.8	EA-WM	2193	54	1987-12-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	RPG	1987-12-10	2023-09-30	0.333	0.039	1992-06-29	1992-06-29	9.714	2007-07-20	2007-07-20	0.08	0.139	0.201	0.671	0.909	0.58	13079	12963	99.113				25.5	38.9	58.6	118.0	183.1	661	653	0.1257	0.508	0.2972		0.0541	0.0651	0.6298	0.2725	0.0016	0.0293	0.486			0.514				0.28	0.551	0.997	35.5	32.88	30.1	37.2	10.5	21.15	9.94	68	171	0.18	26.1	54.03	0.73	0.774	0.094	0.019	0.49	0.849	0.0158	0.693	0.876			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V that monitors compensation flows due to groundwater abstraction.	Crump profile Flat V (1:10) weir set in low 0.5m vertical wingwalls.	Out of structure flows could be gauged from an u/s bridge.	Significant reduction in peak flows across period of record as a result of rating review in 2010.	Low to moderate relief catchment principally on Mercia Mudstone; Headwaters have Sherwood S'st outcrops. Wholly rural with mixed farming.	Monitors compensation flows from a compensation borehole as substantial gw abstraction in the catchment.
54097	Hore at Upper Hore flume	1.62	SN8308386939	283083.0	286939.0	52°28'04.1904"N 3°43'21.0630"W	52.46783	-3.72252	Hore	Upper Hore flume	412.0	CEHW		54	1985-01-01		FL				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1985-11-08	2023-09-29	0.119	0.009	1989-06-23	1989-07-24	2.498	2012-06-08	2012-06-08	0.017	0.037	0.06	0.28	0.434	0.33	13840	13636	98.526				399.7	477.3	579.1	692.4	736.4	2370	2651	0.6727		0.3232	0.0041		0.6567		0.2625	0.0808				1.0					0.66	0.303	1.0	224.5	54.21	73.5	98.2	13.5	2.4	1.34	588	111	0.67	407.9	1.59	0.038		0.0031	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flume structure designed to gauge streams which have supercritical flow regimes. Experimental catchment operated by IH/UKCEH.	Flume structure designed to gauge streams which have supercritical flow regimes. Rainfall, evaporation and soil moisture estimates also available from dense monitoring network. Natural catchment nested within 54022 Severn at Plynlimon Flume.	Rectangular, side contracted critical depth flume. Drowning may occur following big floods owing to sediment deposited d/s.	Researchers should note the availability of the primary 15 minute dataset. Missing data Feb-March 2001 due to access restrictions because of Foot & Mouth.	Palaeozoic grits and shales. Very steep gradients, ~2500mm rain. The highest and southern lateral fringes of catchment are peat moorland. Remainder of catchment has mature coniferous forest planted in 1958 and 1960.	Natural flow regime.
54098	Cam at Cambridge	29.3	SO7507503576	375075.0	203576.0	51°43'49.2198"N 2°21'44.2677"W	51.73034	-2.3623	Cam	Cambridge	10.8	EA-WM	2603	54	1992-10-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false	I	1998-01-01	2023-09-30	0.434	0.064	2011-09-05	2011-09-05	7.11	2007-07-20	2007-07-20	0.129	0.22	0.309	0.832	1.147	0.71	9404	9311	99.011				14.8	31.3	97.9	206.9	249.3	847	796	0.1445	0.2236	0.5143		0.1144	0.1296	0.291	0.4445	0.0011	0.1315	0.1755	0.2601	0.5645		0.0722		0.0182	0.33	0.612	0.987	113.5	30.24	34.2	45.5	10.3	14.12	7.63	107	335	0.27	14.8	29.54	0.458	0.486	0.052	0.0487	0.693	0.853	0.053	0.773	0.827			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir with a relatively unresponsive flow regime. The Cam acts as an important feeder to the Gloucester and Sharpness canal.	Flat V weir, 6m wide with 2.295m wing walls and integral access bridge. Owned and built by British Waterways but now operated by the EA. Cam acts as important feeder for Gloucester and Sharpness Canal.	Subject to accretion u/s. June and July 2007 high flows extrapolated beyond upper limit of rating curve.	No dmfs 17/06 - 08/07/98 - gauge house rebuilding.	Drains Cotswold escarpment. Geology predominantly argillaceous Lias formations. Overlain by limited drift deposits. Contains the town of Cam.	Relatively unresponsive flow regime.
54099	Coley Brook at Coley Mill	37.3	SJ77981927	377980.0	319270.0	52°46'14.0495"N 2°19'40.1498"W	52.77057	-2.32782	Coley Brook	Coley Mill	68.8	EA-WM	2199	54	1992-05-01		TP				true	false	false	false	false	false	false	true	false	false	false	false	false	PG	1997-01-01	2023-09-30	0.406	0.067	2006-07-27	2006-07-27	6.478	2019-10-27	2019-10-27	0.116	0.18	0.235	0.853	1.41	0.62	9769	9758	99.887				67.4	77.6	103.7	123.9	164.3	693	701	0.0804	0.5367	0.3029		0.0567	0.0755	0.6336	0.2801		0.0058	0.8707			0.1293	0.093	0.0004	0.3129	0.33	0.574	0.984	29.2	32.1	28.9	35.2	10.2	14.17	7.25	102	349	0.14	67.4	36.33	0.666	0.884	0.0995	0.0068	0.224	1.069	0.0131	0.568	1.169			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A rectangular thin-plate weir, which does suffer from the effects of abstractions and spray irrigation.	Rectangular thin-plate weir 1.9m wide with concrete side contractions, set in existing brick lined channel.	Non standard approach (sharp bend u/s). Weir drowns at high flows and due to downstream vegetation.		Geology: Triassic Sandstones overlain by Boulder Clay and sands and gravels within the lower reaches. Land use is mainly arable farming.	Flows affected by u/s PWS abstractions and spray irrigation. High baseflow component.
54100	Lonco Brook at Whitleyford Bridge	33.6	SJ74652386	374650.0	323860.0	52°48'42.0602"N 2°22'39.1176"W	52.81168	-2.37753	Lonco Brook	Whitleyford Bridge	71.7	EA-WM	2602	54	1994-02-01		FV				true	false	false	false	false	false	false	true	false	false	false	false	false		2002-01-01	2023-09-30	0.206	0.023	2011-08-17	2011-08-17	6.009	2019-10-26	2019-10-26	0.045	0.082	0.126	0.416	0.632	0.59	7943	7797	98.162				72.7	89.4	107.1	132.2	151.7	783	712	0.0475	0.523	0.4065		0.0227	0.0318	0.544	0.4075	0.0045	0.0099	0.5305	0.0891		0.3804	0.0516		0.4278	0.35	0.512	0.987	28.6	33.91	29.6	35.9	10.1	14.55	7.73	109	234	0.17	72.7	34.71	0.845	0.996	0.1312	0.0109	0.403	0.971	0.0054	0.718	1.218			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A Flat V weir situated in an agricultural catchment. Station opened in 2002.	Flat V weir, opened in 2002.			Agricultural, low relief catchment.
54102	Avon at Lilbourne	108.9	SP5635577779	456355.0	277779.0	52°23'42.4970"N 1°10'23.6425"W	52.39514	-1.17323	Avon	Lilbourne	92.9	EA-WM	2088	54	1979-01-03		FV				true	true	false	true	false	false	false	true	false	false	false	false	false		2005-01-01	2023-09-30	0.653	0.024	2022-09-13	2022-09-13	18.2	2016-03-09	2016-03-09	0.074	0.123	0.203	1.66	2.89	0.38	6847	6847	100.0	1951-09-28		13.34	92.8	109.5	142.7	172.4	214.1	695	668	0.0754	0.4972	0.3819		0.0336	0.026	0.5528	0.3916	0.0027	0.0157		0.0215	0.9785		0.0928		0.6371	0.29	0.354	0.906	35.0	44.77	31.5	38.9	12.0	21.51	10.97	142	256	0.13	92.8	109.58	0.704	0.776	0.0951	0.0047	0.014	0.021	0.0063	0.712	1.043	1972..1985		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel site with cableway until 17/12/98, when flat V weir constructed.	Open channel site suffered heavily from weed growth which led to the installation of the flat-v weir. Cableway no longer in use - flow gaugings carried out by waded, remote control or roped ADCP in the same section as the cableway.	Crest tapping and downstream tail recorder installed (from October and November 1999 respectively). Weir is situated under a bridge which helps reduce weed growth in the measuring channel and on the weir crest. Due to the known problems with weed at the site, paired with the low modular limit of the weir, a crest tapping tile was added on the weir crest. An automated pump was installed for flushing the crest tapping on a regular basis, however is now switched off due to technical issues. Two ratings applied accross the period of record following installation of the flat-v weir in 1998.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Agricultural catchment on Lower Lias, with fairly low relief despite being near the headwaters.	Influences are PWS and canal abstractions at low flows and peak flattening effect of Stanford Reservoir at high flows.
54106	Stour (Warks) at Shipston	185.2	SP2604240517	426042.0	240517.0	52°03'44.7207"N 1°37'17.5916"W	52.06242	-1.62155	Stour (Warks)	Shipston	59.0	EA-WM	2092	54	1998-07-29		VA				true	true	false	true	false	false	false	true	false	false	false	false	false		1986-01-08	2023-09-30	1.563	0.095	1990-09-12	1990-09-13	93.7	2007-07-20	2007-07-20	0.234	0.495	0.807	3.38	5.38	0.53	13780	13712	99.507	1972-04-25		30.648	61.4	90.7	133.2	213.6	307.6	702	677	0.1205	0.4943	0.3318		0.0447	0.0564	0.5597	0.3626	0.0032	0.0178	0.0662	0.0975	0.8363		0.0023		0.1243	0.32	0.454	0.993	65.1	41.27	34.7	42.9	10.9	24.01	13.17	143	27	0.11	61.4	185.16	0.374	0.764	0.0417	0.015	0.56	0.999	0.0112	0.685	0.955	1985		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel site used flood forecasting.	Station opened in 1972, Flat V weir.	During dry periods the stilling well bottoms out and levels may therefore be lower than indicated on the Hydrolog record, e.g. summers of 1993, 1995, 1996, 1997 cont. Dual inlet pipes - may be causing problems with siltation at bottom of well, under investigation. Two ratings applied across period of record, the most recent is valid from January 1997. Good confidence of rating below bankfull. Upper limb of two ratings identical. ADCP gaugings performed just upstream of station in low flows and off upstream road bridge in flood conditions.	Station flooded during July 2007, high flows beyond upper limit of rating curve. Data for Jan 1986-Dec 2004 reprocessed in 2023. Mar 1989 dropout likely due to debris around the inlet pipe, treat as suspect. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Moderately high relief, mainly agricultural catchment, on Lower Lias and Cotswold Oolite.	Some influences from PWS near the headwaters.
54107	Arrow at Studley	92.9	SP0763463999	407634.0	263999.0	52°16'26.7281"N 1°53'22.3388"W	52.27409	-1.88954	Arrow	Studley	60.1	EA-WM	2094	54	1986-01-08		VA				true	false	false	false	false	false	false	true	false	false	false	false	false		2005-01-01	2023-09-30	0.78	0.089	2011-08-15	2011-08-15	32.8	2007-07-20	2007-07-20	0.165	0.28	0.405	1.59	2.63	0.42	6847	6847	100.0				61.6	83.3	127.3	176.9	293.6	736	735	0.1628	0.1976	0.4154	0.0	0.2111	0.1052	0.2224	0.4434	0.0039	0.2168	0.1345			0.8655			0.0388	0.28	0.424	0.919	53.0	38.44	33.0	42.5	10.8	20.17	10.27	129	157	0.22	61.6	92.28	0.643	0.748	0.0789	0.0821	0.698	0.75	0.1085	0.827	0.747			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A vertical-area station in a responsive catchment, and suffers some effects from sewage effluent.	V/A station, 9m channel width, b/full 2.5m.	Low flow control d/s rock sill. With cableway.		Low relief, rural and agricultural headwaters upon Mercia Mudstone, with small glacial gravel deposits in the eastern headwaters.	Responsive; sewage effluent from Redditch dominates low flows.
54110	Severn at Deerhurst	9877.0	SO8679830103	386798.0	230103.0	51°58'09.2668"N 2°11'36.8856"W	51.96924	-2.19358	Severn	Deerhurst	9.8	EA-WM	2606	54	1995-12-01		IV				true	false	false	false	false	false	false	true	false	false	false	false	false		1995-12-01	2023-09-30	101.744	6.58	1996-09-13	1996-09-13	574.0	1998-04-10	1998-04-10	18.7	37.5	60.9	252.0	351.1	0.56	10166	7025	69.103				8.3	49.4	110.0	303.8	826.2	815	793	0.123	0.2984	0.4756	0.0139	0.076	0.0852	0.3836	0.4462	0.0239	0.0567	0.1587	0.0107	0.5313	0.2993	0.1049	0.0085	0.2455	0.32	0.513	0.978	73.3	35.9	33.3	42.5	10.3	282.98	131.21	145	119	0.04	9.3	9866.26	1.151	0.919	0.1055	0.0269	0.717	0.747	0.0348	0.838	0.781			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	An ultrasonic gauging station on the River Severn.	Cross path ultrasonic gauge to measure low to medium flows where tides affect the flow regime. Upgrade of ultrasonic gauge started June 2007. High flow and gauging site at Haw Bridge (54057) but prone to overestimate flows during tidal phases - leading to significant differences in flow series during tidal phases and dropouts in flow.	Unable to infill gaps during 2011 due to ultrasonic gauge fault.		Very large, diverse catchment, Paleozoic slates in Welsh headwaters, Permo-Triassic sediments in middle reaches and Jurassic and Liassic clays from the Avon catchment.	Substantial modification to flow owing to PWS exports and effluent returns (chiefly to the Stour, Worcester, Avon and Thames).
54111	Avon at Rugby	242.7	SP5029276636	450292.0	276636.0	52°23'07.6292"N 1°15'44.9943"W	52.38545	-1.2625	Avon	Rugby	83.3	EA-WM	2090	54	1973-09-20		VA				false	true	true	true	false	false	false	false	false	false	false	false	false																				1970-06-01		27.626	82.4	102.0	128.5	162.5	214.1	694	658	0.0677	0.424	0.4111		0.0856	0.0226	0.4652	0.4287	0.0067	0.0707		0.0097	0.9894	0.001	0.1121		0.7106	0.29	0.362	0.956	31.9	44.12	31.4	39.2	11.7	30.54	15.47	131	260	0.11	82.4	243.37	0.759	0.85	0.1016	0.025	0.755	0.483	0.0343	0.859	0.528	1974..1987	1975-01-01..1988-10-01	cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened in 1973.	Velocity area station opened in 1973 with early record subject to negative flows and poor rating. Daily flow data are not presented due to site issues.	Although bankfull is now around 6m, the river rises out of the main channel at around 1.6m. Datum reset in 1981. Low flows subject to high uncertainty due to weed growth, insufficient gaugings for rating, and vandalism. Uncertainty in high flows before flood alleviation scheme (completed 1988) due to lack of high flow gaugings, poor fits to ratings, and gaps in the record. Multiple ratings across period of record, with good fit to spot gaugings since flood alleviation scheme.	Considerable uncertainty in early peak flows (for 1975-1988) which are therefore rejected. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Located in a mainly agricultural catchment on Lower Lias.	At low flows PWS at two points above this site and Canal abstractions on the Upper Avon and on the River Swift.
54112	Leam at Kites Hardwick	99.6	SP4675068593	446750.0	268593.0	52°18'48.4668"N 1°18'56.3506"W	52.31346	-1.31565	Leam	Kites Hardwick	69.5	EA-WM	2609	54	1990-01-25		FV				true	false	false	false	false	false	false	true	false	false	false	false	false		2005-01-01	2023-09-30	0.554	0.022	2022-08-14	2022-08-14	10.1	2007-07-21	2007-07-21	0.045	0.093	0.163	1.33	2.68	0.33	6847	6500	94.932				69.4	83.5	113.1	159.2	223.2	692	651	0.0662	0.4182	0.4382		0.0519	0.0183	0.4328	0.4978	0.0011	0.0256			1.0		0.0996		0.026	0.3	0.283	0.944	38.8	50.94	32.5	40.3	11.5	22.87	11.62	117	288	0.13	69.4	104.78	0.723	0.773	0.1028	0.0117	0.587	0.984	0.0144	0.77	0.957			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat Vee weir with brick gauge house and cableway opened in January 2000.	Originally an open channel site opened 25/01/2000. It was opened for low flow measurement but primarily for high flows, following the Bye Report. Prior to its installation, flows and flood warnings on the River Leam were based on levels at Eathorpe, which was downstream of the confluence with the River Itchen. The 1998 floods proved that this was insufficient for accurate flood warning. In June 2000, a project was set up to install a flat vee weir, with a cableway and gauge house located downstream of Thurlaston Bridge. The weir was designed as low and shallow as it could be, to provide useful flow information at low levels but would drown out at high levels and not cause any backing up.	Flat Vee weir has a low modular limit and starts to drown above 0.2m. A downstream tail recorder was added on 27/01/2003 and is currently used with the theoretical rating to calculate flows. Gaugings are generally performed using an ADCP from the cableway during in-bank flow conditions. Out of bank flow can be measured by wade gauging, using a current meter or Flowtracker. A topographic survey was commissioned by an external contractor in 2018/19 due to potential gauge board relocation and levelling issues in general. It was carried out on 08/02/2019 and are awaiting results.	Missing mean flow data in recent years due to issue with flow calculation during non-modular conditions.	The River Leam heads North, passing the outskirts of Braunston before turning northwest towards Grandborough. It then heads west passing through Kites Hardwick gauging station, just south of Draycote Water. It then continues heading west towards Eathorpe gauging station. Catchment generally comprised of low lying agricultural land.	Flow generally baseflow dominated. Artificial influences include Thurlaston road bridge, approximately 30m upstream. At higher levels, flows bypass the channel on the left bank side, at about 1.8m. There is a large bend in the river approximately 12m downstream.
54113	Itchen at Southam	105.5	SP4050362686	440503.0	262686.0	52°15'39.0798"N 1°24'28.7695"W	52.26086	-1.40799	Itchen	Southam	119.8	EA-WM	2613	54	2000-07-28		FV				true	false	false	false	false	false	false	true	false	false	false	false	false		2004-10-21	2023-09-30	0.765	0.011	2011-10-04	2011-10-05	84.81	2007-07-21	2007-07-21	0.037	0.095	0.191	1.897	3.448	0.29	6919	6919	100.0				70.9	86.4	103.9	129.5	204.2	642	641	0.0741	0.5056	0.3516		0.0623	0.0293	0.5387	0.396	0.0031	0.0305			0.993	0.007			0.0748	0.3	0.246	0.99	31.2	51.67	33.4	41.3	11.2	27.73	11.21	107	342	0.14	71.0	103.89	0.855	1.012	0.1277	0.0137	0.668	0.666	0.0164	0.774	0.64			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Level site with flat V weir, brick gauge house and cableway opened July 2000.	Following the review of the Easter 1998 floods, it was determined that the gauging station at Eathorpe on the River Leam did not provide sufficient coverage, to provide accurate flood warnings to Leamington. The Environment Agency decided to construct a gauging station on the River Itchen at Southam to monitor water levels and flows entering the River Leam, to improve flow forecasting models and flood warning lead-time for Leamington. The gauge provides improved monitoring of abstraction on the River Itchen for water resources. The gauging station building has two stilling wells, to measure both the upstream head and tail water levels. A new channel was excavated on the right bank of the existing channel to provide a straighter approach and to facilitate construction of the hydraulic structure. Following completion of the works, the old river channel was backfilled with the material excavated from the new channel.	Gaugings carried out using ADCP off cableway. Artificial influences include a road bridge approximately 62m upstream and Southam sewage works 200m downstream.	Complete period of record. Peak level in July 2007 estimated as 3.2 mASD (85m3/s).	The River Itchen rises to the north at Marton before heading south towards Long Itchington and then onto the gauging station at Southam. Catchment generally comprised of low lying agricultural land.	Generally baseflow dominated. The floods in July 2007 were the highest in the stations record. Flood water inundated the gauge house, submerging instrumentation inside the building. The peak water level was accurately determined from seed lines and water marks within the building.
54114	Avon at Warwick	1012.0	SP2991265296	429912.0	265296.0	52°17'05.9825"N 1°33'46.5443"W	52.285	-1.56293	Avon	Warwick	46.1	EA-WM	2091	54	1986-01-01		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		2000-12-01	2023-09-30	8.302	1.43	2018-03-01	2018-03-01	119.0	2007-07-21	2007-07-21	2.84	3.83	4.78	16.81	27.3	0.53	8339	8246	98.885	1972-04-01		74.641	44.9	72.6	102.8	144.7	223.2	679	654	0.0874	0.4155	0.3439		0.1405	0.0387	0.4528	0.3735	0.0052	0.1236	0.039	0.0023	0.5607	0.3979	0.1577	0.0019	0.3302	0.3	0.417	0.968	30.7	42.51	32.6	40.8	11.2	76.94	39.52	106	261	0.04	46.1	1012.49	1.011	0.928	0.1187	0.0583	0.796	0.774	0.0733	0.885	0.776	1982		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	An open channel site gauging a mainly low lying agricultural catchment.	An open channel site, with the river impounded 1.5 km downstream of the site, it has very limited navigation and has a small seasonal weed growth effect.	Site rarely bypassed. Cross section considered to be stable. Multiple peak flow ratings applied across period of record. Dramatic shift in ratings a result of datum change in 1981. Ratings fit well to corresponding gaugings.	Station closed 22/06/1983 to 01/06/1984. Chart data for 29/12/1982 to 02/01/1986 examined for POTs. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9). Missing data in January 2019 due to sluice gate movement. Flow calculation switched off from July 2020 due to underestimation of flows, rating review in progress.	The catchment is a mainly low relief and largely agricultural but has built up areas at Rugby and Leamington. The geology is mainly Lower Lias and Keuper Marl.	Responsive regime with evident artificial influences. Influences at low flows come from public water supply and returns on the River Leam.
54115	Piddle Brook at Wyre Piddle	104.89	SO9625947611	396259.0	247611.0	52°07'36.4607"N 2°03'21.8214"W	52.12679	-2.05606	Piddle Brook	Wyre Piddle	179.6	EA-WM	2133	54	2000		FV				true	false	false	false	false	false	false	true	false	false	false	false	false		2000-07-26	2023-09-30	0.725	0.014	2017-10-18	2017-10-18	81.52	2007-07-20	2007-07-20	0.063	0.136	0.241	1.614	2.964	0.35	8467	8437	99.646				18.3	28.5	53.5	97.3	140.4	634	627	0.1137	0.4108	0.4311		0.0405	0.0514	0.5096	0.4146	0.0037	0.0189			0.566	0.434	0.0352		0.0144	0.28	0.309	0.989	31.4	48.39	30.9	38.1	10.5	27.63	13.7	57	251	0.16	18.3	104.77	0.91	0.813	0.1344	0.0154	0.547	1.011	0.0133	0.684	0.819			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A Flat-V weir installed in July 2000. This station is located 1.9km upstream of Piddle Brook confluence with River Avon.	Flat-V weir installed in July 2000 replaced level recorder in open channel site closed in 1984. Weir crest 4m wide. Site located 1.9km u/s of Piddle Brook confluence with River Avon.	Overbank flow contained to stage of 1.1 metres within the cableway while floodplain flow can occur over both banks. Tail water correction applied to account for non-modular flow.	Dec 1977- Nov 1984 flows unavailable as rating suffered from weed effects. Flows in October 2017 are lower due to operation of gates downstream in Pershore. Digital level data unavailable for this early part of station record. Flows calculated using new rating since installation of weir in 2000.	Low lying, agricultural catchment with mixed and low permeability geology.	Flow impacted by upstream railway bridge and downstream by Worcester road bridge.
54906	Stour (Worcs) at Kidderminster Gilt Edge	324.0	SO829768	382900.0	276800.0	52°23'20.2390"N 2°15'09.6807"W	52.38896	-2.25269	Stour (Worcs)	Kidderminster Gilt Edge		EA-WM	2006	54	1952-01	1985-12	VA				false	true	true	true	false	false	false	false	false	false	false	false	false																				1952-01-01	1993-07-31	17.296	30.2	68.6	108.0	169.8	313.3	701	693	0.1438	0.2068	0.2664	0.0006	0.3637	0.1009	0.3616	0.1998	0.0032	0.3316	0.5995		0.011	0.3895	0.1091		0.1219	0.3	0.655	0.978	59.7	26.95	31.1	38.8	10.7	46.79	24.02	114	254	0.08	30.3	323.24	0.427	1.05	0.0542	0.1651	0.834	1.202	0.2264	0.91	1.219	1951..1985		cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Chart only with cableway site replaced by 54006 Kidderminster Callows Lane.	Replaced by 54006 Kidderminster Callows Lane. Chart only with cableway. Recorder situated on upstream face of a twin box culvert.	Cableway rated. Silt and debris accumulation at culvert downstream can cause inaccuracies at low flows. Above bankfull flow is impossible to measure - peaks estimated out of bank. It is thought that the top 4 AMAX events were out of bank and estimated. No information on missing data periods. One rating applied across period of record. Rating fits the gaugings well at higher flows but less below 0.75m.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Mainly urban - West Midlands towns. River flows through a wide faulted trough of Triassic sandstones and conglomerates. Higher ground to the east and west consists of marls, sandstones and breccias of the Upper Coal Measures with inliers of Upper Silluirain shales and limestones in the east. Spreads of boulder clay occur north of Swindon and sands and gravels flank the main valley.	Industrial influences on flow regime.
54907	Arrow at Broom	319.0	SP086536	408600.0	253600.0	52°10'50.1121"N 1°52'32.3113"W	52.18059	-1.87564	Arrow	Broom		EA-WM	2007	54	1956-09	1978-01	C				false	true	false	true	false	false	false	false	false	false	false	false	false																				1956-03-19	1978-12-31	40.877	29.5	59.5	100.2	149.2	293.6	695	689	0.1559	0.3349	0.3996	0.0	0.1023	0.0891	0.3848	0.4351	0.002	0.0853	0.0387		0.0179	0.9435	0.0209	0.0016	0.0889	0.28	0.374	0.963	45.2	41.21	32.4	41.6	10.7	35.3	21.2	102	153	0.15	30.6	320.83	0.784	0.88	0.0945	0.0358	0.658	0.975	0.0437	0.798	0.99	1955		cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Site rated until 1976 when replaced in 1976 by 54007 Broom (New) - a crump profile weir with a higher containment capacity.	Up to 1976 rated section; not rated above bankfull when extensive inundation occurred. Replaced in 1976 by 54007 Broom (New) - a crump profile weir with a higher containment capacity. There is a wide floodplain on the right bank (~200m) and a bypass channel on the left bank.	Up to 1976 rated section; not rated above bankfull when extensive inundation occurred. Two ratings applied across period of record, the most recent is valid from October-1973. Bank full pre 1973 2.5mASD and 2mASD. Ratings fit well to respective gaugings.		Low relief, predominantly agricultural catchment upon Keuper Marl, with small glacial gravel deposits in the eastern headwaters. Responsive; sewage effluent maintains low flows. Contains Redditch and Alcester.	Groundwater pumping for PWS significantly augments low flow through effluent returns.
55002	Wye at Belmont	1895.9	SO4850038799	348500.0	238799.0	52°02'42.6485"N 2°45'08.3795"W	52.04518	-2.75233	Wye	Belmont	46.3	EA-WM	055002	55	1935-01-01		VA	522.0		3.3	true	true	true	true	false	false	false	true	true	false	false	false	false	S	1935-10-01	2023-09-30	47.3	2.14	1984-09-01	1984-09-01	690.9	1960-12-04	1960-12-04	6.154	14.94	26.3	114.5	162.0	0.46	32142	31657	98.491	1908-12-16	2008-10-01	410.053	51.0	114.0	296.0	469.5	750.0	1269	1230	0.1274	0.0694	0.7053	0.0665	0.011	0.1019	0.1561	0.6341	0.0916	0.0084			1.0		0.0289	0.0073	0.0583	0.5	0.472	0.967	134.4	39.67	42.4	56.1	10.2	157.73	95.63	297	128	0.08	56.0	1894.26	1.607	0.695	0.0693	0.002			0.0029			1908..1983	1908-12-16..1973-07-01	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Channel control velocity-area station that does not contain extreme events with extrapolated flows probably under-estimated as rating does not take account of floodplain flow.	Channel control velocity-area station, width at bankfull approx. 49 m; cableway span 62 m. Embankment constructed in 1966 on the left extends flood containment.	Extreme events spill out. Severe weed growth problems. Extrapolated flows probably under-estimated as ratings do not not take account of floodplain flow. Originally, stages taken from 1908 at Hereford, 1.2km d/s; flows were measured at current site. Prior to 1932, data unreliable. Variations in stage-discharge relationship at flood flows due to works on floodplain and adjacent to river in Hereford i.e. modification of Old Wye Bridge - enlarged footings and additional internal arches; dates of remedial works unknown. Muliple peak flow ratings applied across period of record. Upper limit set to bank full. Ratings fit well to available gaugings.	Water year 1983/1984 rejected due to the true AMAX occurring during a missing period. Ratings reviewed in 2022 and data reprocessed from 1984. Rating pre-1935 is unknown. Data are rejected pre-1973 because confidence in rating validity is low, especially above QMED.	Above Erwood (55007) are wet uplands draining Palaeozoic rocks; the lower third is a narrow corridor draining Old Red Sandstone, marls and subordinate glacial gravels, which supports arable farming. Upper catchment is predominantly grassland with some forest.	Moderate flow modification, high levels of agricultural abstraction u/s. Naturalised discharges take into account reservoirs in the Elan Valley.
55003	Lugg at Lugwardine	885.8	SO5487140585	354871.0	240585.0	52°03'42.4545"N 2°39'34.8353"W	52.06179	-2.65968	Lugg	Lugwardine	44.9	EA-WM	055003	55	1939-01-01		VA	36.0		5.9	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1939-12-01	2023-09-30	10.752	0.083	1995-10-20	1995-10-21	81.05	1972-12-08	1972-12-08	1.506	3.84	6.629	26.51	35.55	0.65	30620	28281	92.361				46.7	73.7	158.8	361.2	659.7	882	813	0.1144	0.262	0.5589	0.0281	0.0185	0.1016	0.3841	0.473	0.025	0.0145			0.8489	0.1511	0.1382		0.0908	0.35	0.588	0.99	94.7	33.76	34.3	43.6	10.0	89.76	51.43	190	127	0.13	46.7	884.68	1.032	0.774	0.1063	0.0074	0.514	0.706	0.0055	0.689	0.719			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway used as flood warning station from July 1982 to Dec 1989 and reinstated as flow monitoring station from Jan 1990.	Velocity area station with cableway (27.5m between stanchions). Width at bankfull is 16m. Flows over right bank at 2.50m onto wide floodplain with considerable storage. Station for flood warning purposes only from Jul 1982 to Dec 1989. Reinstated as flow monitoring station from Jan 1990. Removed from peak flows dataset in April 2017 (WINFAP Files v5).	Cableway rated with unstable gravel bed. Recent peaks truncated at 32.1 cumecs - rating limit (overbank flows spill onto wide floodplain). Excessive weed growth in summer months requires regular clearance and gravel movement is also an issue requiring maintenance - anecdotal evidence indicates this could be an issue at low flows.	No records pre-1953. Peaks unreliable 1953-1965. Following a rating review in 2013 flows for the period 01/03/1981 onwards have been reprocessed - note this results in a significant drop in flows during the 1995 drought. Following a rating review in 2023 flows for the period 06/03/2014 onwards have been reprocessed.	Geology: Lower Old Red Sandstone, marl dominated producing subdued relief (Herefordshire Plain). Fluvio-glacial deposits near main channel worked for sand and gravel production.
55004	Irfon at Abernant	72.8	SN8904846014	289048.0	246014.0	52°06'04.6766"N 3°37'16.5489"W	52.1013	-3.62126	Irfon	Abernant	184.4	NRW	055004	55	1937-01-01	1982-12-31	VA	96.0		10.5	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1937-10-01	1982-07-31	3.201	0.085	1980-06-13	1980-06-13	54.94	1965-12-09	1965-12-09	0.316	1.031	1.838	7.627	10.73	0.38	16375	16253	99.255	1937-10-01	1982-10-01	56.542	186.7	263.7	430.5	537.2	641.2	1913	1845	0.3979	0.0035	0.5058	0.0526	0.0086	0.3265	0.0199	0.4602	0.1852	0.0072			1.0			0.0148		0.65	0.402	1.0	188.7	46.25	52.8	70.0	11.4	23.04	11.67	412	152	0.19	186.8	73.01	0.454	0.661	0.0284	0.0009			0.0033					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Natural flow regime. Downgraded in 1982 to flood warning station only.	Velocity area station. Approx width at bankfull stage is 20m. Long record, downgraded in 1982 to flood warning station only.	Cableway span is 22m, installed 1972. Three peak flow ratings applied across period of record, the most recent is valid from May 1965. This rating fits all gaugings but limited gaugings in recent years as station de-rated in 1982 to a level-only station for flood warning purposes.		Located on edge of upland area, steep valley sides rising to plateau level between 450m and 600m. Underlain by Ordovician strata. Extensive sheep grazing and forestry.	Natural to within 10% at Q95.
55005	Wye at Rhayader	166.8	SN969676	296900.0	267600.0	52°17'48.5474"N 3°30'47.6984"W	52.29682	-3.51325	Wye	Rhayader	195.0	NRW		55	1937-01-01	1969-12-31	VA	80.0		8.6	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1937-10-01	1969-12-31	6.186	0.159	1961-07-07	1961-07-08	147.2	1960-12-03	1960-12-03	0.631	1.946	3.37	14.87	21.04	0.37	11780	11721	99.499	1937-11-09	1969-10-01	115.322	198.2	283.4	391.7	499.2	750.0	1621	1656	0.1429	0.0038	0.7319	0.0962	0.0049	0.1455	0.0391	0.7033	0.1087	0.003			1.0			0.0242	0.1233	0.59	0.419	0.997	183.4	43.69	53.1	70.7	11.1	36.96	18.22	392	118	0.1	198.2	164.47	0.619	0.913	0.0414	0.0008			0.0014			1937		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Natural flow regime. Closed and replaced by Ddol Farm (55026) in Oct 1969.	Velocity area station. Closed and replaced by Ddol Farm (55026) in Oct 1969 which has higher banks and is more contained.	Bed gravel shoals, generally unstable. Above 2m flow overtops right bank and flows across playing fields. Two peak flow ratings applied across period of record, one pre and one post Apr-1946. No gaugings available. Upper limit at bank full as over-bank flow occurs. Ratings give markedly different flow at high stage even though datums identical; ratings therefore seen as unreliable.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Wet, upland catchment draining impermeable, metamorphosed Silurian sediments. High relief, headwaters reach over 600m, and feature steep sided and high gradient streams. Moorland and forestry.	Natural to within 10% at Q95.
55006	Elan at Caban Coch Reservoir	184.0	SN926645	292600.0	264500.0	52°16'05.2852"N 3°34'31.0422"W	52.26813	-3.57529	Elan	Caban Coch Reservoir	251.0	NRW		55	1908-01-01	1984-12-31	B				true	false	false	false	false	false	false	false	false	false	false	false	false	SP	1908-01-01	1984-12-31	5.045	0.505	1926-10-24	1926-10-24	141.0	1960-12-03	1960-12-03	1.424	1.499	1.58	13.67	21.8	0.34	28125	28066	99.79				215.3	356.1	459.7	527.5	641.2	1838	1825	0.0299	0.0003	0.8458	0.0734	0.0037	0.0272	0.0003	0.5852	0.35	0.0007			1.0			0.0398		0.65	0.353	0.76	145.6	50.34	54.9	75.3	11.3	25.02	12.68	449	98	0.1	216.4	183.7	0.3	1.18	0.0233	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compenstaion flows gauged below dam. Naturalised series available. Superseded by 55032 Caban Dam gauge.		Compensation flows gauged by two circular orifices about 36m below the dam. Overspill measured by using the dam cill as a broad-crested weir 172.5m wide.	Long naturalised series available. Superseded by 55032 Caban Dam gauge.	Very wet (>1800mm), high relief catchment draining predominantly Silurian shales and slates. Forestry and moorland.	Siphon gauge operates during first 4 months of the year if not overspilling. Direct abstraction to Birmingham.
55007	Wye at Erwood	1282.1	SO07584449	307580.0	244490.0	52°05'27.6413"N 3°21'01.3696"W	52.09101	-3.35038	Wye	Erwood	112.1	NRW	055007	55	1937-01-01		VA	650.0		18.8	true	true	true	true	false	false	false	false	true	false	true	false	false	SPE	1937-10-01	2023-09-30	37.487	1.1	1984-08-29	1984-08-29	689.0	1979-12-27	1979-12-27	4.7	10.7	19.5	93.8	132.0	0.41	31411	31352	99.812	1937-10-01		514.535	109.4	204.2	340.0	487.7	750.0	1413	1386	0.1251	0.0107	0.7503	0.0836	0.0085	0.1083	0.0728	0.6822	0.1231	0.0067			1.0		0.0058	0.0097	0.0372	0.53	0.426	0.96	152.4	42.23	44.7	60.0	10.3	84.45	42.94	343	132	0.09	109.4	1283.4	0.612	0.894	0.0412	0.001			0.0022			1937..1983		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with rock bar as a control. Substantial flow modification from regulation and abstraction from the Elan Valley reservoirs, PWS and sewage effluent.	A velocity-area station with a large rock bar as a control. Bankfull width approx. 64m. Stable section. The station was demolished and re-constructed through 2006/2007, completed in February 2007, the left bank was also re-profiled slightly.	Cableway span 79m (installed in 1952). All but the highest flows (which spread slightly onto narrow terrace on rb) contained. Two peak flow ratings applied across period of record. Gaugings confirm stage-discharge behaviour to approx. 5m. No records of bypassing or floodplain flow.	Low flows after August 1999 below 1.53 cumecs are extrapolated below the lower limit of the rating and should be treated with caution. Original records destroyed 1937-52, so FEH POTs used (flow only). Some naturalised sequences available. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Large wet upland catchment draining impermeable rocks - metamorphosed Palaeozoic sediments and an igneous complex. Summit levels exceed 600m. Predominantly grassland catchment with extensive grazing, moorland, and patches of forest.	Approximately 15% of the catchment draining to Erwood is upstream of the Elan Valley reservoirs. These reservoirs are used for PWS and affect runoff/attenuate flood peaks. Regulation releases also made from Caban Coch reservoir to support downstream abstraction during low flows.
55008	Wye at Cefn Brwyn	10.55	SN8291583683	282915.0	283683.0	52°26'18.7313"N 3°43'25.8457"W	52.43854	-3.72385	Wye	Cefn Brwyn	341.0	CEHW		55	1951-01-01		CC		66.0	15.7	true	true	false	false	true	false	true	false	false	false	true	false	false	N	1951-08-01	2023-09-29	0.717	0.023	1963-06-11	1963-06-11	17.81	1964-12-12	1964-12-12	0.074	0.212	0.371	1.705	2.512	0.31	26358	25354	96.191	1951-07-01		17.468	344.0	395.9	480.8	640.8	736.6	2381	2439	0.0051		0.9517	0.0164	0.0038	0.0121		0.9383	0.0481	0.0016			1.0			0.0589		0.66	0.385	1.0	200.6	47.86	74.7	100.5	13.2	5.96	3.11	490	148	0.31	342.5	11.56	0.23	0.733	0.0151	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	3-bay Crump profile weir. Part of the IH/UKCEH experimental catchments since 1968. Natural and responsive flow regime.	3-bay Crump profile weir (no divide piers), divide plates installed 1962; concrete piers built 1969.	Low crest 2.43m broad, high crests total 9.13m broad. u/s slope 1:2, d/s slope 1:5. Very steep channel, u/s accretion needs regular clearing. Peak flow rating for structure originally derived by the Institute of Hydrology (IH) and deemed applicable over the whole POR. No gaugings available to validate rating.	Treat early record with caution. Operated as an experimental basin by IH/UKCEH since 1968. 15 minute flow data plus extensive hydrometeorological database. 1973 flood generated by 100mm storm. 11/09/1997 - 08/10/1997 DMFs estimated from subcatchment whilst repairs made to structure.	Small, high relief, very wet catchment. Grassland on peat overlying weather resistant Silurian slates and shales.	Natural and very responsive flow regime. Photos of weir at high and low flows both taken on 7 October 2022, before and after heavy rain.
55009	Monnow at Kentchurch	357.4	SO419251	341900.0	225100.0	51°55'16.9533"N 2°50'46.4134"W	51.92138	-2.84623	Monnow	Kentchurch	57.6	NRW		55	1948-01-01	1972-12-31	VA	140.0		23.4	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1948-10-01	1972-04-30	5.926	0.422	1955-10-17	1955-10-17	116.1	1960-01-24	1960-01-24	0.773	1.838	3.242	13.2	19.71	0.5	8613	8554	99.315				57.9	94.6	184.1	443.9	715.3	999	956	0.1415	0.1763	0.5603	0.076	0.0225	0.0934	0.3549	0.4639	0.0778	0.0092			1.0		0.0867		0.0445	0.41	0.583	0.997	129.9	35.28	39.8	51.3	10.1	40.14	19.7	228	103	0.14	57.9	354.88	0.743	0.786	0.0722	0.0034			0.003					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Closed and replaced by Grosmont (55029) due to severe shoaling in Apr 1972.	Velocity area station. l/b is high and steep, r/b has floodplain at 2.44m. Closed and replaced by Grosmont (55029) in Apr 1972. Station removed from peak flows dataset in August 2024 (WINFAP Files v13).	One peak flow rating applied across period of record. Rating upper limit reduced from 4m to level of floodplain on r/b. No gaugings available to validate rating.		Five parallel tributaries drain SE down the deeply dissected Old Red Sandstone plateau of the Black Mountains, the northern-most exposing the Old Red Sandstone marls. Moorland headwaters, arable lower reaches.
55010	Wye at Pant Mawr	27.2	SN8441882504	284418.0	282504.0	52°25'41.7436"N 3°42'04.8171"W	52.42826	-3.70134	Wye	Pant Mawr	309.9	NRW	055010	55	1955-01-01	2012-10-01	FVVA		5.9	16.1	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1955-10-01	1982-07-31	1.656	0.05	1972-10-04	1972-10-04	41.63	1964-12-12	1964-12-12	0.164	0.504	0.855	3.908	5.748	0.31	9801	9709	99.061	1952-08-26	2012-10-01	50.404	309.8	371.3	479.4	617.0	750.0	2320	2341	0.1689		0.7352	0.0734	0.0022	0.1499		0.7646	0.0844	0.0008			1.0			0.1022	0.0584	0.66	0.386	1.0	211.7	47.73	72.3	96.8	13.0	9.99	4.98	482	137	0.23	309.8	27.25	0.312	0.637	0.0188	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Flood warning only from July 1982.	Velocity area station. Informal rock bar control. Station in headwaters of Wye catchment. Flood warning only from July 1982.	Opened in 1952 as velocity-area station with a natural rock bar control downstream. Cableway added January 1969. Rock bar control profiled and level raised in July 1973 (date is approximate). Two peak flow ratings applied across period of record, the change being necessitated by the profiling of the rock bar in 1973. Gaugings fit well to rating. All flows contained within banks.	Missing flow data between 1982-1988. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The catchment has underlying Silurian strata which are resistant to weathering. Mostly forestry and grazing.
55011	Ithon at Llandewi	111.4	SO1045868284	310458.0	268284.0	52°18'19.2471"N 3°18'52.8561"W	52.30535	-3.31468	Ithon	Llandewi	230.1	NRW	055011	55	1959-01-01	1982-12-31	VA	62.0		27.2	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1959-10-01	1982-07-31	2.626	0.01	1976-08-27	1976-09-08	47.14	1979-12-27	1979-12-27	0.137	0.62	1.413	6.598	9.678	0.38	8340	8156	97.794				231.4	297.7	379.0	464.4	582.1	1174	1086	0.0461	0.0068	0.844	0.0629	0.0083	0.044	0.0533	0.8125	0.0892	0.001			1.0				0.064	0.48	0.395	0.999	128.2	44.01	37.5	48.9	9.8	28.37	16.2	379	121	0.12	231.4	110.32	0.336	0.779	0.0281	0.0003			0.0002					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, natural river section. Closed for flow derivation and used as a flood warning station only from 1982.	Velocity area station. Natural river section. Approx width at bankfull stage is 18m. Used as a flood warning station only from 1982. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Cableway span 20m. One peak flow rating applied across period of record. Limit of rating is bank full. Gaugings fit well to rating up to 0.9m. No gaugings above bank full.	Missing POT data between end of FEH record in 1973, and start of Hydrological record in 1981.	Upper reaches of catchment underlain by Silurian Wenlock beds. Extensive sheep pasture.
55012	Irfon at Cilmery	244.2	SN9950750766	299507.0	250766.0	52°08'45.6315"N 3°28'12.1050"W	52.14601	-3.47003	Irfon	Cilmery	136.3	NRW	055012	55	1966-01-01		FVVA	185.0	25.0	11.6	true	true	false	true	false	false	false	false	false	true	false	false	true	N	1966-10-01	2023-09-30	10.211	0.14	1983-08-15	1983-08-15	184.0	2004-02-03	2020-02-15	0.751	2.79	5.52	25.1	35.0	0.37	20819	20365	97.819	1966-09-01		191.021	139.2	197.3	316.0	495.7	641.2	1639	1627	0.2499	0.0082	0.6209	0.0905	0.0095	0.2147	0.0836	0.5821	0.1125	0.006			1.0		0.0098	0.0044		0.65	0.431	0.997	158.6	42.75	50.0	66.4	10.8	39.53	20.67	333	136	0.11	139.4	246.66	0.612	0.789	0.0419	0.0004			0.002			1981..1983		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with Crump profile flat V weir. Natural flow regime.	Velocity area station, initially with a gravel shoal control. Improved in 1977 by installing a 25m wide Crump profile Flat V weir.	Weir rebuilt in September 1994, and recapped in October 1995. Cableway spans 44m. Above approx. 3m the rb floodplain is inundated. A major event in October 1998 altered the shape of the channel at low flows. Multiple peak flow ratings applied across period of record. Gaugings fit well to respective ratings.	Weir rebuilt between 31/8/94 and 7/9/94, no data available. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). Rating reviewed in 2022 and data reprocessed for the full period of record.	Natural catchment. Headwaters drain the very wet Tywi Forest, underlain by indurated Ordovician sediments. The middle and lower reaches are on relatively more permeable Silurian rocks, but generally a responsive catchment of very low permeability. Predominantly upland pasture (mainly grassland) but with some forested areas, mainly in western headwaters.	Natural to within 10% at Q95.
55013	Arrow at Titley Mill	126.4	SO3282158500	332821.0	258500.0	52°13'14.1388"N 2°59'05.3076"W	52.22059	-2.98481	Arrow	Titley Mill	129.0	EA-WM	055013	55	1966-01-01		VA	27.5		10.8	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1966-10-01	2023-09-30	2.364	0.093	1995-08-21	1995-08-28	39.6	1979-12-27	1979-12-27	0.27	0.732	1.43	5.58	7.88	0.56	20819	20819	100.0	1966-06-23		27.758	129.8	190.3	294.1	427.3	540.2	1086	962	0.106	0.0562	0.7052	0.0946	0.011	0.0569	0.2172	0.6191	0.0942	0.0099			0.7596	0.2404				0.49	0.553	0.999	130.1	34.31	37.5	48.7	9.8	28.33	14.84	303	103	0.2	130.1	125.9	0.399	0.742	0.0382	0.003			0.0046			1977..1983		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway with high flows out of bank but not bypassed draining a natural catchment.	Velocity area station. Low flow control is a stable riffle; otherwise a three-bay road bridge 50m d/s is the control. Approx bankfull width is 13.25m. Bankfull on RHB is 2.5m, LHB is 2.0m. Cableway span is 21m.	Cableway rated site that gets out of bank, LHB floodplain restricted to storage only, not bypassed. Intake pipes silted up during summer of 1994, treat data with caution. Four ratings applied across period of record, the most recent is valid from June 2019. Gaugings fit well to respective ratings.	Anomalous step changes (e.g. Sept 1975, Sept 1991, March - May 1992). Summer 1974 (July - Sept) low flows should be treated with caution; minima overestimated due to stilling well problem. Data estimated for July - Sept 1990 and June - July 1995. Intake pipes silted up during summer of 1994, treat data with caution. WY1977/1978 rejected as likely occured during period of missing data. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Headwaters of moderate relief, draining durable Silurian slates and shales; otherwise, catchment underlain by ORS marls. Generally low permeability. Predominantly grassland, with sheep grazing on upland plateau and some patches of arable and forest in lower catchment. Station is in a transition zone between upland plateau supporting sheep grazing and the more productive lowlands.	Natural catchment to within 10% at Q95.
55014	Lugg at Byton	203.3	SO3643264689	336432.0	264689.0	52°16'35.9654"N 2°55'59.2439"W	52.27666	-2.93312	Lugg	Byton	124.1	EA-WM	055014	55	1966-01-01		FV	46.0	8.6	9.1	true	true	false	true	false	false	true	true	false	true	false	false	true	P	1966-10-01	2023-09-30	3.938	0.351	1976-08-24	1976-08-27	70.9	2020-02-16	2020-02-16	0.655	1.432	2.579	8.79	12.0	0.65	20819	20819	100.0	1966-10-01		26.504	124.3	171.1	287.4	446.3	659.7	1062	977	0.1159	0.0644	0.7321	0.06	0.004	0.1597	0.1759	0.6156	0.0437	0.0048			0.8383	0.1617	0.0079		0.077	0.49	0.593	0.996	158.5	31.41	36.1	47.3	9.8	31.7	17.88	299	122	0.18	124.4	202.54	0.633	0.67	0.0646	0.0023			0.0009			1983		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir. Runoff reduced by groundwater abstraction for PWS.	Flat V weir Crump profile weir, 1:20 cross-slopes, 12.5m wide constructed in 1971. Pre-1971, station was natural river section with stable riffle control. Above 2m left bank overtopped, right bank is steep cliff.	Some shoaling u/s. Multiple ratings applied through the period of record.	Ratings reviewed in 2022 and data reprocessed from 1981. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Headwaters drain Radnor Forest - underlain by Silurian bedrock. Impermeable formations are covered by extensive alluvial gravel deposits in the valleys. Predominantly grassland catchment supporting rough grazing, with some forestry.	Aquifer provides significant baseflow and moderates flood peaks. Runoff reduced by groundwater abstraction for PWS.
55015	Honddu at Tafolog	25.1	SO2766829443	327668.0	229443.0	51°57'31.4872"N 3°03'14.5831"W	51.95875	-3.05405	Honddu	Tafolog	253.1	NRW	055015	55	1966-01-01		VA	24.0	1.7	19.1	true	false	false	false	false	false	false	false	false	false	false	false	false		1966-10-01	2023-09-30	0.821	0.013	1982-06-07	1982-06-07	50.0	2020-02-15	2020-02-15	0.116	0.28	0.458	1.69	2.701	0.48	20819	12503	60.056				256.5	345.8	557.5	661.6	715.3	1395	1315	0.047	0.0005	0.456	0.4509		0.067	0.0126	0.3769	0.5419	0.0015			1.0					0.54	0.572	1.0	257.0	27.13	46.5	60.9	10.6	10.29	5.39	523	153	0.12	256.5	24.71	0.097	0.485	0.0065	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area natural river section. Downgraded to level-only for flood warning in July 1982. Status upgraded in 2010, with flows from 2005.	Velocity area station. Natural river section. First station with flat V weir opened 55m d/s of current site in 1954. Station closed August 1982 to January 1992. Station downgraded to level-only for flood warning in July 1982. Status upgraded in 2010, with flows from 2005. Non-standard control means flows should be viewed with caution. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Low flow control is a small rock bar; otherwise Tafalog road bridge 70m d/s is the control. No cableway for high flow gaugings. Gauging ceased in July 1986. Gauging restarted in 2005 and station status upgraded in 2010, with flows from 2005. Peak flow rating provides best fit to gaugings. Upper limit recommended at 0.4m (max gauged).	Highest flow of 68.5 cumecs occurred in Oct 1960, before start of NRFA record. Weir deteriorated after this flood and station was moved u/s to current location in 1974. Data from 12/07/2022 to 21/07/2022 is marked as suspect due to contractors on site installing mussel ropes, which led to water being held back and then eventually released.	Located in high upland area of the Monnow catchment, underlain by the Breconian sequence of the Lower Old Red Sandstone strata. Mostly forestry and sheep grazing.	Natural flow regime.
55016	Ithon at Disserth	358.0	SO0245557784	302455.0	257784.0	52°12'34.6067"N 3°25'44.3360"W	52.20961	-3.42898	Ithon	Disserth	149.5	NRW	055016	55	1968-01-01		FV	115.0	12.5	20.3	true	true	false	true	false	false	true	false	true	true	false	false	true	N	1968-10-01	2023-09-30	8.249	0.008	1995-08-25	1995-08-25	144.0	1998-10-27	1998-10-27	0.323	1.74	4.07	21.3	31.0	0.38	20088	19916	99.144	1968-07-29		120.124	150.3	218.9	319.0	442.7	659.9	1129	1066	0.0883	0.0138	0.8029	0.0642	0.0094	0.0825	0.0895	0.7544	0.0654	0.0076			1.0				0.0385	0.49	0.427	0.998	132.2	40.33	36.2	48.5	9.6	62.29	32.92	324	157	0.07	150.3	358.94	0.525	0.829	0.0428	0.0018			0.0031			1967..1983	1968-07-29..1972-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir. Natural flow regime.	Flat V Crump profile weir, replaced velocity-area station with channel control in October 1972. Station is used for flood warning.	Weir is 1:20 cross-slope, 18m wide. Weir known to drown at high flows. Cableway span 27.5m. Very high floods may inundate the rb. Lb d/s of station floods at high flows. Weir repaired in 1995 necessitating changes in rating. Three peak flow ratings applied to period of record.	Data estimated for Oct 1972 and for April 1980. Weir rebuilt Aug 1995; no data available, but late Aug low flow deemed reliable. Missing data in 2001 due to access restrictions during Foot and Mouth outbreak. Suspect data arising from drift correction removed (13/07/01-5/08/01). Full POR peak flow data reviewed and released in Sep 2019 (WINFAP Files v8). Suspect data arising from relocation of staff gauge due to weir refurbishment - data removed (01/06/20-21/08/20).	Catchment drains rocks of very low permeability: Upper and western catchment drains Ordovician and Silurian shales; igneous complex in the SE. Noticeably reduced rainfall compared to the u/s Wye and Irfon catchments. High moorland and extensive forestry plantations on the higher ground, mixed farming in valleys.	Natural to within 10% at Q95.
55017	Chwefru at Carreg-y-wen	29.0	SN998531	299800.0	253100.0	52°10'01.3399"N 3°27'59.1775"W	52.16704	-3.46644	Chwefru	Carreg-y-wen	151.4	NRW		55	1968-01-01	1982-12-31	FVVA	48.0	1.0	33.1	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1968-10-01	1982-03-31	0.912	0.001	1976-08-23	1976-08-27	29.59	1981-03-21	1981-03-21	0.038	0.195	0.464	2.253	3.407	0.34	4930	4836	98.093				157.9	196.8	307.5	501.1	601.6	1421	1488	0.0899	0.0135	0.744	0.1428	0.0023	0.0701	0.0817	0.7795	0.0656	0.0032			1.0					0.65	0.4	1.0	155.8	43.92	44.3	59.8	10.1	13.65	7.23	324	115	0.3	157.9	28.99	0.346	0.671	0.026	0.0001			0.0002					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Natural river section with Flat V weir. Regime thought to be natural. Station closed in 1982.	Natural river section with Flat V weir (date of installation vague - Nov 1972 or Feb 1974). lb is high and steep. Extensive floodplain on right above 2.2m. Station closed in 1982. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Variable gravel shoals affect the low flow rating. Gabions were installed on each bank to maintain uniform flow, but deposition occurs on right bank and main flow on left. Two peak flow ratings applied across period of record, relating to conditions pre and post November 1972 (when the Flat V is thought to have been built). Most recent rating fits well to available gaugings.		Upland catchment on low permeability geology. Predominantly rough grassland and moorland.	Regime thought to be natural.
55018	Frome at Yarkhill	144.0	SO6148242705	361482.0	242705.0	52°04'52.8690"N 2°33'48.5717"W	52.08135	-2.56349	Frome	Yarkhill	55.4	EA-WM	055018	55	1968-01-01		VA	20.0		13.2	true	true	false	true	false	false	false	true	false	false	false	false	false	E	1968-10-01	2023-09-30	1.162	0.018	1976-08-26	1976-08-26	24.33	1981-12-30	1981-12-30	0.158	0.335	0.612	2.472	4.102	0.52	20088	20076	99.94	1968-06-01		22.159	57.2	77.0	142.3	199.2	252.4	730	706	0.0789	0.364	0.4926	0.0007	0.0457	0.0496	0.4936	0.443	0.0003	0.0128			1.0		0.0429		0.06	0.32	0.567	0.991	68.0	39.21	32.9	41.6	10.6	35.73	18.01	138	174	0.13	57.2	143.82	0.542	0.612	0.0644	0.0105	0.505	0.974	0.0087	0.693	1.166	1983		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station using a road bridge with a flat, insensitive invert and an adjacent box culvert as low and medium range controls.	Velocity area station using a road bridge with a flat, insensitive invert and an adjacent box culvert as low and medium range controls. Approx bankfull stage width is 12m. Broad floodplains operate above 2m when the Lodon tributary may bypass station via Watery Lane on right bank. Floodplain on left bank (above 2.5m) is very wide (1/2 mile).	Station uses a road bridge with a flat, insensitive invert and an adjacent box culvert as low and medium range controls. Broad floodplains operate above 2m when the Lodon tributary may bypass station on Rb. Two peak flow ratings applied across period of record. Distinct rating change in 1995 to account of increased vegetation within approach channel. Some scatter in high flow check gaugings, but rating reasonable to bank full.	No DMFs 15-26/9/1998 due to recalibration problems at the station. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Catchment of Lower Frome D/s of 55028 is underlain by the marl strata of the Lower Old Red Sandstone. Bounded to the north by the Ordovician inliers of Shucknall Hill and Bertestree. To the south bounded by the Silurian strata of the Woolhope Dome. Subdued relief, relatively low rainfall. Entirely rural, predominantly arable farming in lower areas with livestock on higher ground.	Mainly natural flow regime; runoff increased by effluent returns.
55020	Pinsley Brook at Cholstrey Mill	24.2	SO4616659900	346166.0	259900.0	52°14'04.7329"N 2°47'22.9379"W	52.23465	-2.7897	Pinsley Brook	Cholstrey Mill	77.3	EA-WM	055020	55	1970-01-01	2007-10-25	VA	3.0			true	false	false	false	false	false	false	false	false	false	false	false	false		1993-02-14	2007-10-25	0.473	0.152	1994-08-30	1994-08-30	3.03	2007-07-21	2007-07-21	0.182	0.281	0.38	0.879	1.161	0.8	5367	5069	94.448				77.6	86.2	99.5	191.3	323.3	793	742	0.1317	0.4795	0.3329	0.0015	0.0306	0.0806	0.5661	0.3002	0.0123	0.0326			0.7939	0.2061	0.0509		0.4543	0.33	0.64	0.964	38.4	29.82	33.6	41.5	9.9	14.14	6.92	121	140	0.43	77.6	19.98	0.859	0.854	0.1423	0.011	0.458	0.864	0.0072	0.524	0.989			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A Flat V weir located on the Pinsley brook, 3km upstream from the confluence with the River Lugg.	Flat V weir width with 1:5 downstream, 1:2 upstream and 1:5 cross stream slopes. The structure is 10m long and 2m wide with 1m high side walls. The station is located on the left bank of the Pinsley Brook, some 3km u/s from the confluence with the River Lugg.	Estimated bank full discharge is 3 cumecs. Gauged from adjacent footbridge.	The catchment is of subdued relief as a result of the underlying marl-dominated strata of the Lower Old Red Sandstone and subsequent deposition of superficial deposits.
55021	Lugg at Butts Bridge	371.0	SO5020858942	350208.0	258942.0	52°13'35.1019"N 2°43'49.3767"W	52.22642	-2.73038	Lugg	Butts Bridge	67.1	EA-WM	055021	55	1969-01-01		VA	85.0		11.1	true	true	true	true	false	false	false	true	false	true	false	false	true	P	1969-03-01	2023-09-30	5.79	0.439	1976-08-15	1976-08-15	70.8	2020-02-16	2020-02-16	0.907	2.01	3.61	12.9	17.79	0.66	19937	19030	95.451	1969-02-28		42.972	68.9	91.7	208.0	390.4	659.7	951	877	0.1238	0.175	0.6324	0.0345	0.0153	0.1471	0.2739	0.5426	0.0263	0.0093			0.753	0.247	0.1131		0.111	0.37	0.61	0.992	125.6	30.24	35.0	44.9	10.0	54.51	28.36	232	136	0.19	68.9	365.88	0.811	0.658	0.0901	0.005	0.137	0.12	0.0035			1968..1984	1969-03-01..1985-01-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with low flows blockstone weir control.	Velocity area station with rough stone control (at low flows) providing flood warning station. Station rebuilt in 1984. Width at bankfull is 21m. Stanchion span is 24m.	Multiple ratings applied across period of record. Recent rating gauged to bankfull.	July - Sept 1996 flows under review. Early peak flow data rejected due to uncertainty in pre-digital rating. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). Ratings reviewed in 2022 and data reprocessed from 1988.	Headwaters drain Radnor Forest (developed on Silurian formations). Subdued relief in the lower valley (mostly Old Red Sandstone). Impervious catchment but extensive valley gravels provide some baseflow. Land use: mainly grassland in upper catchment, rough grazing with some forestry. Mixed farming with higher proportion of arable in the lower catchment.	Runoff reduced by public water supply abstraction.
55022	Trothy at Mitchel Troy	142.0	SO5024711226	350247.0	211226.0	51°47'50.8423"N 2°43'22.3070"W	51.79746	-2.72286	Trothy	Mitchel Troy	16.2	NRW	055022	55	1969-01-01	1982-12-31	FVVA	26.0		38.5	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1969-04-01	1982-07-31	1.558	0.019	1976-08-28	1976-08-28	35.19	1974-02-11	1974-02-11	0.137	0.311	0.631	3.62	6.514	0.49	4870	4171	85.647				18.3	53.2	102.4	192.0	467.7	945	887	0.1038	0.1524	0.7222	0.0002	0.0162	0.0871	0.3626	0.5373	0.0044	0.0082			1.0		0.0088		0.0816	0.36	0.572	0.998	99.6	36.92	37.9	47.8	10.1	35.42	19.72	115	139	0.13	18.4	141.91	0.445	0.909	0.0451	0.0014			0.0009					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with Flat V weir. Level only station since 1982 for flood warning purposes.	Velocity area station, informal Flat V weir installed 1975 as a low flow control. Bankfull width approx 10 m. Level only station since 1982 for flood warning purposes.	Potential for station to be affected by backwater from arched bridge 40m d/s at high flows. Rb is steep; lb is lower and is where bypass starts above bankfull. Peak flow Rating D fits gaugings prior to Flat V installation (1975). Upper limit reduced to 1.5 m, when deviations start. Rating H fits well; no major changes in channel. Upper limit 2.8m.		Area to south and west of Monmouth. Low rolling relief of catchment is underlain by strata of predominantly Upper and Lower Old Red Sandstone. Land use is rural, mainly agricultural with small areas of forestry.
55023	Wye at Redbrook	4010.0	SO5276911077	352769.0	211077.0	51°47'46.8090"N 2°41'10.5883"W	51.79634	-2.68627	Wye	Redbrook	9.2	NRW	055023	55	1936-10-01		VA	612.0		2.2	true	true	false	true	false	true	false	false	true	true	true	true	true	SPE	1936-10-01	2023-09-30	73.346	3.429	1976-08-28	1976-08-28	893.5	1947-03-20	1947-03-20	10.99	25.67	44.0	175.0	245.5	0.54	31776	31776	100.0	1969-10-01		492.1	13.6	73.4	199.0	430.8	750.0	1054	1010	0.1294	0.1725	0.6112	0.0442	0.0227	0.1052	0.2962	0.5205	0.056	0.0167		0.006	0.9563	0.0376	0.0631	0.0034	0.0677	0.38	0.542	0.979	116.1	35.6	38.7	50.3	10.1	244.16	130.34	227	127	0.1	13.6	4016.26	1.392	0.857	0.0824	0.0067	0.571	0.665	0.0072	0.723	0.682	1983		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, channel control. Modification of flows by reservoir regulation, public water supply abstraction and effluent returns.	Channel control velocity-area station replacing Cadora (55001, 1937-71; 4040 sq.km. which was tidally affected; flows incorporated in the Redbrook series). Width at bankfull stage approx 69m.	All but extreme floods contained. Severe summer weed growth problems causes gaugings to be increasingly undertaken by ADCP just u/s of Bigsweir Bridge, 7km d/s where channel is clearer. Gaugings at Redbrook are done by cableway. Flow regime moderately modified by exports and regulation. Two peak flow ratings applied across period of record.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Very large catchment; wet in upland areas to the west, drier in lower-lying areas in east and south. Mixed Palaeozoic geology, impermeable rocks of Ordovician to Carboniferous age. Catchment is mainly grassland, with moorland, forestry and grazing on higher ground; mixed farming with greater proportion of arable land in lower reaches. Little industrial development.	Modification of flows by exports and reservoir regulation, public water supply abstraction and effluent returns.
55025	Llynfi at Three Cocks	132.0	SO1661137596	316611.0	237596.0	52°01'49.7303"N 3°13'00.8825"W	52.03048	-3.21691	Llynfi	Three Cocks	87.9	NRW	055025	55	1970-01-01		B VA	30.0		15.6	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1970-08-01	2023-09-30	2.293	0.034	2022-08-13	2022-09-03	68.5	1979-12-27	1979-12-27	0.155	0.582	1.33	5.44	7.68	0.57	19419	19244	99.099	1970-01-01		54.87	86.6	147.5	223.6	346.2	748.7	1001	999	0.1177	0.0945	0.7227	0.0273	0.018	0.059	0.1472	0.7513	0.0217	0.0114			1.0				0.047	0.54	0.576	0.95	104.6	30.55	39.2	49.7	9.9	20.76	12.02	239	353	0.04	88.0	131.62	0.349	0.89	0.0367	0.0017			0.0043			1983		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; informal broad-crested. Asymmetrical Flat V weir enhancing the natural rock bar control. Natural flow regime.	Velocity area station; informal broad-crested. Asymmetrical Flat V weir enhancing the natural rock bar control. Approx. width at bankfull stage is 16m.	Cableway was present, removed in 2010. Two peak flow ratings applied across period of record.	Maximum peak flow occurred in Dec 1979 - this was undoubtedly exceptional although uncertainty surrounds the magnitude (198.4 cumecs on Peak flow database) as flow was extrapolated. Gap in record in 2001 the result of telemetry fault which could not be resolved due to Foot and Mouth restrictions. Data estimated for Aug - Nov 2003. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Impermeable geology: headwaters drain the Old Red Sandstone of the Black Mountains; lower reaches expose Old Red Sandstone marls which have lower relief. Contains Llangorse Lake. Predominantly grassland with patches of woodland and some arable in lower reaches.	Natural to within 10% at Q95.
55026	Wye at Ddol Farm	174.0	SN9758067584	297580.0	267584.0	52°17'48.4881"N 3°30'11.7976"W	52.2968	-3.50328	Wye	Ddol Farm	192.8	NRW	055026	55	1937-01-01		FVVA	235.0		10.4	true	true	true	true	false	false	true	false	false	true	false	false	true		1937-10-01	2023-09-30	6.735	0.068	2018-07-10	2018-07-10	147.2	1960-12-03	1960-12-03	0.543	2.039	3.7	16.2	23.1	0.38	31411	31352	99.812	1969-10-01		115.157	196.3	277.5	385.7	497.3	750.0	1603	1636	0.139	0.0055	0.7361	0.0931	0.0065	0.1405	0.0427	0.7062	0.1057	0.0046			1.0			0.0231	0.1179	0.59	0.423	0.997	180.2	43.36	52.7	70.0	11.1	37.65	18.19	387	125	0.1	196.3	172.12	0.612	0.921	0.0409	0.0015			0.0025					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with rock bar as control. Informal Flat V installed 1972. Natural flow regime.	Velocity area station with rock bar as control. Informal Flat V installed 1972. Station replaced 55005 Rhayader Groe (1937-69). Bankfull width 30m.	Cableway span 54m. All but exceptional floods contained. Issues with stilling well intake pipe from 2006, notably affecting low flows, lead to long-term reliance on back-up recorder and culminated in eventual station rebuild in 2012/13. Following rebuild in July 2013, all ratings reviewed. Two peak flow ratings across period of record.	Flow series up to 1969 from 55005 Rhayader Groe; data generally thought to be of poorer quality. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Wet, upland catchment draining impermeable, metamorphosed Silurian sediments. High relief, headwaters reach over 600m, and feature steep sided valleys and high gradient streams. Dominant land use is grassland with moorland and extensive areas of forest in headwaters.	Only gauging station on the main River Wye that is unaffected by large water supply reservoir (flows from Elan Valley Reservoir complex enter the Wye just d/s).
55027	Rudhall Brook at Sandford Bridge	13.2	SO6406525717	364065.0	225717.0	51°55'43.6778"N 2°31'26.4489"W	51.9288	-2.52401	Rudhall Brook	Sandford Bridge	67.1	EA-WM		55	1971-01-01	1998-04-01	FV	4.86	1.3	51.8	true	false	false	false	false	false	false	false	false	false	false	false	false	I	1971-10-01	1998-04-01	0.13	0.002	1995-09-29	1995-12-18	2.05	1993-01-13	1993-01-13	0.015	0.042	0.078	0.276	0.369	0.74	9680	5422	56.012				47.0	67.6	100.8	161.6	274.3	807	737	0.1555	0.3981	0.3761		0.0394	0.1018	0.634	0.2265	0.0001	0.0275			1.0					0.33	0.737	0.885	101.8	14.71	35.3	44.0	10.3	10.18	5.27	108	4	0.13	47.0	12.88	0.18	0.822	0.0202	0.0209	0.556	1.194	0.0091	0.518	1.062			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir, with most data after 1991.	Flat V Crump profile weir.		Station reinstated in October 1991 (very little data for 1978-90 period). Data processing suspended in 1998 due to severe problems with the approach channel.	Small catchment on northern edge of the Forest of Dean. Mixed agriculture underlain by Old Red Sandstone.
55028	Frome at Bishops Frome	77.7	SO6666548863	366665.0	248863.0	52°08'13.3857"N 2°29'18.4801"W	52.13705	-2.48847	Frome	Bishops Frome	75.7	EA-WM	055028	55	1971-01-01		FV	12.0		10.8	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1971-10-01	2023-09-30	0.742	0.012	1995-08-21	1995-08-21	88.92	1981-12-30	1981-12-30	0.07	0.188	0.333	1.54	2.593	0.47	18993	17096	90.012				76.9	116.2	156.7	206.3	252.4	744	721	0.0744	0.2989	0.5398	0.0013	0.0671	0.0534	0.437	0.4916	0.0005	0.0168			1.0				0.0343	0.32	0.572	0.997	73.7	38.39	33.9	42.8	10.9	25.06	14.11	158	139	0.12	76.9	78.1	0.35	0.796	0.0369	0.0109	0.595	0.964	0.0125	0.763	0.949			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A Flat V Crump weir which replaced a previous station in 1975.	Flat V Crump profile weir 5m wide, replaced velocity-area station in 1975. Cableway span 10m.	Steep banks do not contain flood flows; some throttling by d/s road bridge whose soffit is below bankfull.		Natural catchment. Impermeable bedrock geology, headwaters cutting into ORS of Bromyard plateau. In NE area of Wye catchment, which is drier than other areas to W. Superficial deposits confined to valleys. Mixed arable and pasture farming.
55029	Monnow at Grosmont	354.0	SO4160924831	341609.0	224831.0	51°55'08.1378"N 2°51'01.4799"W	51.91893	-2.85041	Monnow	Grosmont	58.0	NRW	055029	55	1972-01-01		VA	160.0		9.0	true	true	true	true	false	false	true	false	true	true	true	false	true	N	1948-10-01	2023-09-30	6.033	0.117	2003-10-29	2003-10-29	156.0	2019-10-26	2019-10-26	0.672	1.77	3.23	13.57	20.5	0.51	27393	27334	99.785	1972-01-01		151.254	57.2	94.6	184.0	443.8	715.3	999	956	0.1415	0.1762	0.5603	0.076	0.0225	0.0935	0.3548	0.464	0.0778	0.0093			1.0		0.0867		0.0445	0.41	0.583	0.997	129.9	35.28	39.8	51.3	10.1	40.49	20.04	228	103	0.14	57.2	355.01	0.745	0.788	0.0723	0.0034			0.003					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with an informal Flat V weir. Natural flow regime.	Velocity area station with an informal Flat V weir enhancing the natural rock step control 200m d/s. Approx. 30m wide at bankfull.	Cableway spans 42m. Wide floodplain (>150m) inundated at high flows. Banks reinforced with block stone on both sides. Three peak flow ratings applied across period of record. Out of bank flows not confirmed with check gaugings.	Flows prior to Apr 1972 derived from 55009 Kentchurch (450m downstream). Missing flows in early 1963 likely to have been amongst the lowest winter flows on record. In August 2012, flows reprocessed from 01/01/1987 reflecting rating changes particularly affecting low flows. Lowest flows on record in 2003 corroborated by gaugings on 26th Aug and 13th Oct. Flows from 25 Mar 2009 from 55047 Grosmont Rhosllwyn, a replacement station 200m d/s of old station. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Impermeable catchment. Five parallel tributaries drain SE down the deeply dissected Old Red Sandstone plateau of the Black Mountains, the northern-most exposing the Old Red Sandstone marls. Moorland headwaters, mixed farming (with extensive arable) in lower reaches to east.	Natural to within 10% at Q95.
55030	Claerwen at Dol-y-mynach	95.3	SN910620	291000.0	262000.0	52°14'43.2696"N 3°35'52.5068"W	52.24535	-3.59792	Claerwen	Dol-y-mynach	256.0	NRW		55	1925-01-01	1950-12-31	TP				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1926-01-01	1950-12-31	4.017	0.0	1927-12-28	1927-12-29	69.17	1931-11-03	1931-11-03	0.337	0.973	1.894	10.14	15.04	0.3	9131	9009	98.664				255.5	379.4	474.3	540.3	641.2	1884	1881	0.0095	0.0004	0.8979	0.0488	0.0009	0.0024	0.0002	0.5217	0.4408	0.0003			1.0			0.0371		0.65	0.332	0.849	130.4	51.92	55.0	75.5	11.3	19.83	10.03	466	104	0.08	255.5	94.24	0.332	1.168	0.0258	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Two sharp edged weirs constructed to monitor runoff from the partially completed Dol-y-Mynach dam. Regarded as natural runoff until the construction of Claerwen reservoir. Station discontinued in 1950.	Two sharp edged weirs, approx 22m each, constructed to monitor runoff from the partially completed Dol-y-Mynach dam. Total width approx 120m. Construction of the dam was abandoned, but it resulted in a storage of around 0.1 sq km. NRW have no records for this station. No HIF series. Station discontinued in 1950.	Station may drown, so high flows likely to be suspect (and over-estimated). Peaks exceeding capacity of weir have been truncated by recorder. Levels taken from flood marks and wall of meter chamber. Discharges above the weir capacity derived by straight-line extrapolation; this ignores the increased cross section length above weir flank walls, an additional 73m. Only Barnes formula rating found: Q= 3.324H^1.49 L^1.11 (L+2H)^-0.11.		Upland catchment on impermeable Lower Silurian slates, grits and conglomerates. Steep terrain with little soil cover and extensive areas of peat bogs.	The discharge was regarded as natural runoff until the construction of Claerwen reservoir in 1948.
55031	Yazor Brook at Three Elms	42.3	SO4912241454	349122.0	241454.0	52°04'08.7807"N 2°44'37.1599"W	52.06911	-2.74366	Yazor Brook	Three Elms	57.9	EA-WM	055031	55	1972-01-01		FV	5.52		18.4	true	false	false	false	false	false	false	true	false	false	false	false	false	I	1973-02-01	2023-09-30	0.189	0.0	2003-09-05	2022-08-13	4.699	2020-02-16	2020-02-16	0.013	0.069	0.124	0.377	0.552	0.57	18504	17868	96.563				60.0	70.0	93.0	187.7	290.0	746	686	0.1808	0.4867	0.2762	0.0009	0.0384	0.1393	0.6702	0.139	0.0006	0.0473			1.0		0.2077			0.32	0.552	0.955	58.6	38.16	33.1	40.9	10.0	16.38	7.96	112	149	0.26	63.4	42.98	0.962	0.73	0.1318	0.0218	0.561	0.645	0.0146	0.68	0.479			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A Flat V weir, however record is known to be unreliable in parts, and can experience zero flows during summer.	Flat V weir, theoretically rated, replaced, in 1999, non-standard Flat V Crump (1:5 cross-slopes, 2.5m wide).		Flow record unreliable. Gravel accretion causes rating variability, checked by c/m. Floods contained.	Low relief catchment containing urban development of western Hereford. Some light industry but land use is mostly arable agriculture developed on Old Red Sandstone marls; extensively covered with glacial sands and gravel, which maintain baseflow in the Yazor Brk.	Zero flows experienced during summer months. Affected by industrial abstractions from groundwater, which can dominate flow pattern at low flows.
55032	Elan at Caban Dam	184.0	SN9281764605	292817.0	264605.0	52°16'08.8349"N 3°34'19.7191"W	52.26912	-3.57214	Elan	Caban Dam	209.7	NRW	055032	55	1977-01-01		FV	7.0		16.8	true	true	false	true	false	false	false	false	false	false	false	false	false	SRP	1908-01-01	2023-09-30	5.11	0.505	1926-10-24	1926-10-24	141.0	1960-12-03	1960-12-03	0.741	1.475	1.586	13.76	22.2	0.34	42277	42218	99.86	1981-03-01		120.2	212.1	355.9	459.6	527.5	641.2	1838	1825	0.03	0.0003	0.8457	0.0734	0.0037	0.0273	0.0003	0.5852	0.3499	0.0007			1.0			0.0398		0.65	0.353	0.761	145.9	50.33	54.9	75.3	11.3	25.21	12.84	449	98	0.1	212.9	183.78	0.301	1.176	0.0233	0.0			0.0			1983		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir, 350m d/s of Caban dam. Entirely regulated apart from overspill. Used as a flood warning station.	Flat V Crump profile weir; 23m wide, 350m d/s of Caban dam. Used as a flood warning station. Caban gauging station is located on the left hand bank of the river Elan with 40m span cableway.	Several changes in gauging patterns over period of record; therefore one peak flow rating only cannot be applied. Rating D provides best fit post March 2002, Rating A provided the best fit to high flow gaugings pre 2002.	Flows from 3 Jun 1981 reprocessed in Aug 2012 as a result of rating changes slightly affecting low flows. Monthly naturalised flows available for certain periods from older Caban Coch station (55006). Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Very wet, high elevation catchment draining impermeable geology, predominantly Silurian shales and slates. Upland pasture and moorland, patches of forest.	Station located immediately downstream of series of 5 reservoirs used for PWS (~4 cumecs exported to Midlands). Flow regime is entirely regulated apart from releases for compensation. Current compensation release is seasonally variable (0.79 cumecs during summer, 1.1 cumecs during winter) and was historically up to 1.5 cumecs. Releases also made from Caban Coch reservoir to support downstream abstraction during low flow periods. Release regime modified in 2015 to make more frequent regulation releases.
55033	Wye at Gwy flume	3.88	SN8242085372	282420.0	285372.0	52°27'12.9863"N 3°43'54.1906"W	52.45361	-3.73172	Wye	Gwy flume	405.0	CEHW		55	1973-01-01		FL				true	true	false	false	true	false	false	false	false	false	false	false	false	N	1973-10-10	2023-09-29	0.282	0.006	2018-07-26	2018-07-26	6.421	2012-06-08	2012-06-08	0.039	0.085	0.145	0.656	0.996	0.33	18252	17785	97.441	1973-01-01		8.96	379.3	437.7	553.6	687.1	736.6	2418	2576			0.9932			0.0108		0.9267	0.0625				1.0					0.66	0.329	1.0	200.6	52.21	75.9	102.0	13.5	3.52	2.03	558	146	0.49	384.2	3.83	0.223	0.583	0.0155	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular, side contracted critical depth flume. Long term IH/UKCEH research catchment. Natural flow regime.	Rectangular, side contracted critical depth flume designed by Hydraulics Research Ltd, suitable for streams with steep gradients, heavy sediment loads and high flood/drought flow ratios. Catchment nested within Cefn Brwyn (55008). Primary 15 minute dataset available.	Shoal formation common, requiring prompt removal to avoid drowning. Check gauged by c/m, and volumetrically for lowest flows.		Very wet catchment; drains highest area of Plynlimon upland massif. Composed of Ordovician massive grits (unconfined aquifer maintaining baseflow), slates and Silurian mudstones. Heath on peaty plateau; grassland on free draining slopes (supporting sheep grazing) and mires in valley bottoms.	Responsive regime. Natural to within 10% at Q95.
55034	Cyff at Cyff flume	3.07	SN8242584187	282425.0	284187.0	52°26'34.6564"N 3°43'52.4221"W	52.44296	-3.73123	Cyff	Cyff flume	356.0	CEHW		55	1973-01-01		FL				true	true	false	false	true	false	true	false	false	false	false	false	false	N	1973-10-02	2023-09-29	0.212	0.002	2023-06-10	2023-06-10	5.078	2023-01-03	2023-01-03	0.018	0.056	0.104	0.508	0.763	0.28	18260	17735	97.125	1973-01-01		5.76	358.5	408.7	482.1	556.6	695.1	2413	2415			0.9644	0.0218		0.0006		0.9983	0.0012				1.0			0.0821		0.66	0.397	1.0	182.5	46.94	78.2	106.0	13.4	4.01	2.04	480	121	0.39	358.5	3.12	0.11	0.878	0.0088	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular, side contracted critical depth flume. Long term IH/UKCEH research catchment. Natural flow regime.	Rectangular, side contracted critical depth flume designed by Hydraulics Research Ltd, suitable for streams with steep gradients, heavy sediment loads and high flood/drought flow ratios. Catchment nested within Cefn Brwyn (55008). Primary 15 minute dataset available.	Shoal formation common, requiring prompt removal to avoid drowning. Check gauged by c/m, and volumetrically at lowest flows.		Very wet catchment; drains Plynlimon massif. Composed of Ordovician grits, shales and slates and Silurian mudstones, mostly covered by peaty soils. Mainly natural or partly reseeded grassland, supporting sheep grazing.	Responsive flow regime. Natural to within 10% at Q95.
55035	Iago at Iago flume	1.08	SN8252685402	282526.0	285402.0	52°27'14.0390"N 3°43'48.6159"W	52.4539	-3.73017	Iago	Iago flume	386.0	CEHW		55	1973-01-01	1999-06-06	FL				true	true	false	false	true	false	false	false	false	false	false	false	false	N	1973-10-01	1999-06-06	0.067	0.001	1976-07-01	1976-09-09	1.132	1986-12-29	1986-12-29	0.007	0.021	0.03	0.163	0.252	0.32	9380	9213	98.22	1973-01-01	1999-06-06	1.85	381.3	412.5	484.1	576.3	702.4	2372	2461	0.0157		0.9721		0.0122	0.0116		0.8556	0.1327				1.0					0.66	0.335	1.0	186.6	51.8	75.3	101.5	13.2	2.65	1.1	485	178	0.49	381.3	1.01	0.037		0.0025	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rectangular, side contracted critical depth flume in IH/UKCEH research catchment. Natural flow regime. Discontinued in June 1999.	Rectangular, side contracted critical depth flume designed by Hydraulics Research Ltd, suitable for streams with steep gradients, heavy sediment loads and high flood/drought flow ratios. Catchment nested within Cefn Brwyn (55008). Primary 15 minute dataset available.	Shoal formation common, requiring prompt removal to avoid drowning. Gauged by c/m, and volumetrically at lowest flows.		Very wet catchment; drains Plynlimon massif. Composed of Ordovician grits, shales and slates and Silurian mudstones. Heath on peaty plateau; grassland on free draining slopes (supporting sheep grazing) and mires in valley bottoms.	Responsive flow regime. Natural to within 10% at Q95.
55036	Garren at Marstow Mill	91.0	SO5601719344	356017.0	219344.0	51°52'15.3296"N 2°38'24.8418"W	51.87092	-2.64023	Garren	Marstow Mill	26.0	EA-WM	055036	55	1996-01-01		US			27.3	true	false	false	false	false	false	false	false	false	false	false	false	false	EI	1996-01-04	2023-09-30	1.004	0.0	2003-09-11	2003-10-20	7.047	2020-02-16	2020-02-16	0.099	0.314	0.601	2.43	3.693	0.72	10132	10024	98.934				21.4	64.7	102.6	183.1	359.2	781	762	0.0743	0.3931	0.4701	0.0002	0.0441	0.0353	0.5988	0.3519	0.0011	0.0116			1.0		0.0078		0.0005	0.33	0.738	0.975	81.4	14.89	36.0	43.9	10.1	29.06	17.31	114	105	0.19	21.4	90.03	0.317	0.853	0.0307	0.0064	0.407	0.854	0.0085	0.653	1.013			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A Velocity-Area station until 21/12/1997, ultrasonic time of flight (ToF) flow measurement until 14/08/2012 and then Acoustic Doppler flow measurement. New ultrasonic ToF flow meter installed and operational from 12/07/2022 until present. Periods of record replaced with rated flow during times when flow meter is unreliable.	A Velocity-Area station until 21/12/1997, ultrasonic time of flight (ToF) flow measurement until 14/08/2012 and then Acoustic Doppler flow measurement. New ultrasonic ToF flow meter installed and operational from 12/07/2022 until present. Periods of record replaced with rated flow during times when flow meter is unreliable. Immediately upstream of former mill in concrete-sided mill leat and just downstream of a side weir which operates during high flow conditions. Primarily for low flow measurement.	Located d/s of side overflow weir which operates during high flow conditions. Approx. 0.7km u/s of confluence with R. Wye.	US gaugings became unreliable in 2011 and flows calculated from rating.	Geology: Lower ORS overlain with brown earth soils of Erdiston Association. Mixed agriculture.
56001	Usk at Chainbridge	911.7	SO3460605591	334606.0	205591.0	51°44'42.6669"N 2°56'54.8813"W	51.74519	-2.94858	Usk	Chainbridge	22.6	NRW	056001	56	1957-01-01		VA	700.0		5.8	true	true	true	true	false	true	false	false	true	true	true	true	true	SRP	1957-03-01	2023-09-30	28.931	1.61	1976-08-27	1976-08-27	585.0	1979-12-27	1979-12-27	4.58	9.98	16.7	67.1	96.8	0.51	24320	24320	100.0	1957-02-12		378.75	23.8	121.6	313.5	497.5	884.7	1386	1367	0.1303	0.0321	0.6529	0.145	0.0167	0.1119	0.0813	0.6936	0.0901	0.0182		0.0204	0.9703	0.0093	0.0324	0.0065	0.1255	0.56	0.597	0.98	159.7	28.86	50.2	66.4	11.1	94.53	55.21	312	109	0.07	25.5	913.25	0.77	0.783	0.0445	0.0045			0.0064	0.72	0.661	1956..1958		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; straight and uniform cross section. Partial impact on flows resulting from three large existing PWS reservoirs in upper catchment.	Velocity area station; 45m wide, straight and uniform cross section.	All flows contained by bridge but some overspilling occurs during extreme events d/s on left bank. Permanent cableway. One single rating applied across period of record for peak flows database, while daily mean flows based on four ratings. Rating extended to 7.815 m based on hydraulic modelling. No gaugings prior to 1975.	Influence on flows from three large PWS reservoirs in the upper catchment. Abstraction for Monmouthshire and Brecon Canal at Brecon affects low flows. Large trees became lodged d/s of station in Dec 1979 flood, removed March 1981.	Impermeable catchment, mainly Old Red Sandstone, some Boulder Clay and alluvium in valleys. Principal land use is grassland, hill farming in upper areas, with dairy or livestock farming below; heathland in highest elevations, some forested areas. Peaty soils in uplands, seasonally wet.	Influence on flows from three large PWS reservoirs in the upper catchment. Abstraction for Monmouthshire and Brecon Canal at Brecon affects low flows.
56002	Ebbw at Rhiwderin	216.5	ST2586888879	325868.0	188879.0	51°35'37.8994"N 3°04'17.6389"W	51.59386	-3.07157	Ebbw	Rhiwderin	30.6	NRW	056002	56	1957-01-01		FVVA	242.0	30.5	8.3	true	true	true	true	false	false	false	false	false	true	true	false	true	SPG	1957-10-01	2023-09-30	7.416	0.43	2022-08-31	2022-08-31	153.1	1979-12-27	1979-12-27	1.324	2.945	4.577	16.7	23.6	0.55	24106	23046	95.603	1957-04-24		106.3	32.4	156.5	324.5	473.5	615.7	1529	1454	0.1719	0.0343	0.4109	0.2145	0.136	0.1876	0.0467	0.4422	0.1634	0.1557		0.82	0.0239	0.1561	0.0049	0.005	0.1456	0.49	0.538	0.975	182.3	29.79	52.7	70.0	11.8	41.98	22.27	317	183	0.18	32.4	211.82	0.714	0.895	0.0391	0.0509	0.634	1.0	0.0743	0.737	0.945			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, low flow Flat V weir. Flows influenced by PWS and GW abstraction/recharge.	Originally natural section, low flow Flat V weir installed in 1976, refurbished in 1996. Location may also be referred to as Rhiwderyn.	Weir width: 14.5m, cross-slope 1:20, 1:2 u/s, 1:5 d/s. Discharges up to MAF level contained. Three peak flow ratings applied across period of record.	No GDF for 01/06/1975 to 31/01/1977 and 01/03/1977 to 31/10/1977. Weir refurbishment in 1996 did not alter the weir level or geometry, station completely rebuilt so no GDF 19/07/1996 to 05/01/1997. Flows from 1 January 1977 reprocessed due to rating changes (including a new modelled high flow rating) in January 2013, resulting in a significant reduction in the largest peak flows and minor reduction in daily mean and monthly maximum flows, particularly for period 1997-2000.	Moderate permeability, mainly Coal Measures. Mixed land use: mostly grassland, upland heath at highest elevations in north; some forest, mainly in lower valley to south. Significant urban development in valleys.	Small water supply reservoirs in uplands; public water supply abstraction. Runoff influenced by groundwater abstraction/recharge in valley. Drainage water from old coalmines can also influence flows.
56003	Honddu at The Forge Brecon	62.1	SO051297	305100.0	229700.0	51°57'27.5700"N 3°22'56.8603"W	51.95766	-3.38246	Honddu	The Forge Brecon	143.9	NRW	056003	56	1963-01-01	1984-12-31	CC		122.0	16.2	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1963-10-01	1984-09-30	1.478	0.045	1976-08-26	1976-08-27	24.72	1979-12-27	1979-12-27	0.15	0.467	0.974	3.417	4.802	0.52	7671	7671	100.0	1959-05-16	1984-10-01	23.456	147.6	218.4	316.9	401.6	473.5	1257	1171	0.1049	0.0236	0.7576	0.0969	0.0028	0.0752	0.0286	0.8911	0.0005	0.0044			1.0		0.0136	0.0238	0.0276	0.53	0.529	0.999	121.0	35.2	43.1	56.6	10.4	21.79	10.94	311	175	0.21	147.6	62.66	0.325	0.909	0.0268	0.0009			0.0026	0.188	0.055	1984		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Three-bay compound crump weir. Station discontinued 1984.	Three-bay compound crump weir built in 1963 replacing problematic river section that was affected by bed scour and siltation of intake pipe and closed in 1960. Station discontinued 1984.	Weir centre crest width is 2.438m, flanking crests are 4.877m. Steep high banks on each flank. Good fall in river bed d/s ensures modularity at all stages. Current meter gaugings were taken to confirm theoretical rating.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Upland catchment, predominantly impermeable geology of Old Red Sandstone with an inlier of the Ludlow Series. Mainly rough grassland and moorland.
56004	Usk at Llandetty	543.9	SO1266020398	312660.0	220398.0	51°52'31.0321"N 3°16'12.3996"W	51.87529	-3.27011	Usk	Llandetty	103.6	NRW	056004	56	1965-01-01		VA	330.0		10.58	true	true	true	true	false	false	false	false	false	false	false	false	false	S	1965-10-01	2023-09-30	18.168	0.366	1976-09-09	1976-09-09	434.0	2002-02-01	2002-02-01	2.06	5.48	10.0	42.1	62.6	0.45	21184	14390	67.929	1965-11-05		349.7	99.3	193.7	325.0	456.1	884.7	1492	1478	0.1119	0.0182	0.7181	0.1231	0.0095	0.0984	0.0363	0.8175	0.0306	0.0113			1.0		0.0329	0.0072	0.1155	0.57	0.547	0.974	148.6	35.03	52.2	70.2	11.4	53.06	30.17	328	101	0.06	99.3	545.44	0.547	0.865	0.037	0.002			0.0039			1985		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, natural river section. Cray and Usk Reservoirs in catchment affect runoff.	Velocity area station, natural river section. Downgraded to a flood warning level-only station in October 1985. Relocated 50m d/s and upgraded in Oct 1999.	Natural bankfull stage is 3.7m. There is a raised cableway stanchion on the lb. Banks in the measurement section are reinforced with boulders. Floods are contained (5.49m) and guided by longitudinal spur dyke on left bank and transverse bank on right, where recorder and cable are located. Inlet pipes are prone to blockage. Ratings are likely to under-estimate flow for events that go out of bank. Three peak flow ratings are applied over the period of record.	NRFA record for original station ends Dec 1981 (now including 1980-81 data added in Aug 2014). The flow record for the reopened station available from Jan 2000. Peak flow data throughout missing period. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Geology predominantly impermeable Old Red Sandstone. Land use is mainly grazing and some forestry.	Cray and Usk Reservoirs in catchment affect runoff.
56005	Lwyd at Ponthir	98.1	ST3296492432	332964.0	192432.0	51°37'36.0947"N 2°58'11.3723"W	51.62669	-2.96983	Lwyd	Ponthir	14.9	NRW		56	1966-01-01	1998-07-10	CC		176.0	10.6	true	false	false	false	false	false	false	false	false	false	false	false	false	SPGI	1966-07-01	1998-07-10	3.138	0.339	1976-08-22	1976-08-22	75.59	1990-02-07	1990-02-07	0.643	1.31	2.022	6.868	9.719	0.55	11698	11698	100.0				14.7	77.9	298.6	464.8	580.2	1465	1394	0.1197	0.0275	0.4575	0.2156	0.1406	0.1295	0.0637	0.4232	0.1588	0.2231		0.5283	0.2843	0.1874	0.0059		0.0867	0.49	0.525	0.98	143.5	33.13	53.6	68.1	11.7	28.86	16.24	283	136	0.26	14.7	98.35	0.612	0.606	0.0501	0.0784	0.712	0.677	0.0847	0.803	0.649			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir, three crests. Flow affected by reservoirs and GW abstraction. Station closed in 2010.	Compound Crump weir (three crests, each 6.096m wide). Level-only station since July 1998, closed in 2010. Replaced by Ponthir Star Industrial Estate 200m d/s. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Flows <176 cumecs contained. Central crest subject to occasional blockage by debris in high flows, middle walls of structure removed Sept 1994 because of this. Channel enclosed by relatively steep river banks, walls, bridge abutments etc, and overbank flow does not occur till stage of approx 3m. Lb has been raised by flood defence embankment. Progressive drowning from 1.4m. No cableway. Calibration assumes modularity. Shoal development problem at existing site; feasibility study completed for replacement station 300 m d/s. New weir and work on approach channel needed. One peak flow rating applied across period of record. No confidence in rating for high flows as no gaugings above 0.81m and rating is poor fit even at this level. Shoal d/s affects performance of weir. Recommended upper limit 0.5 m.	Now level only with no flow data processed after 10/07/98.	Predominantly Old Red Sandstone, overlain by Carboniferous Limestone, Millstone Grit and Upper Coal Series. Generally livestock farming with urban development in lower areas. Some Forest. Peaty soils in uplands, seasonally wet.	Small reservoirs for industrial and PWS in upper reaches. Some GW abstraction in valley where there is augmentation by drainage water from old mines.
56006	Usk at Trallong	183.8	SN9472629547	294726.0	229547.0	51°57'15.8905"N 3°31'59.9826"W	51.95441	-3.53333	Usk	Trallong	166.0	NRW	056006	56	1963-01-01	1984-05-31	VA	320.0		9.5	true	true	true	true	false	false	false	false	false	false	false	false	false	S	1963-10-01	1984-05-31	6.578	0.341	1976-09-08	1976-09-08	154.3	1981-03-21	1981-03-21	1.004	2.265	3.797	14.88	22.0	0.45	7549	7549	100.0	1963-10-01	2009-10-01	163.6	166.7	240.4	337.5	462.5	832.7	1674	1674	0.1047	0.0046	0.7359	0.1245	0.004	0.1114	0.0127	0.84	0.0197	0.0076			1.0		0.0414		0.112	0.62	0.477	0.963	136.4	40.54	59.6	82.1	12.2	24.81	13.11	344	37	0.05	166.7	184.74	0.511	0.865	0.0365	0.0008			0.0016			1985		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Catchment includes the Cray and Usk Reservoirs, used for PWS. De-rated to level only in 1984; now used as a flood warning facility.	Velocity area station in a straight reach. Situated in a valley with narrow floodplain bounded by moderately sloping hillsides. Gravel bed control associated with a rock exposure. Approx channel width is 31m. The approach is through buttresses of road bridge and an abandoned railway bridge. De-rated to level only in 1984 due to instability at high flows; now used as a flood warning facility.	All but very exceptional flows contained within banks. On rb water flows into flat fields at approx 3.3m. One peak flow rating applied across period of record. Rating fits gaugings very well. Upper limit set at highest current meter measurement (2.5m).	Computation of daily flows ceased in 1984. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Impervious catchment - mainly Old Red Sandstone - draining from the Brecon Beacons. Land use is mainly grazing, some forestry.	Responsive flow regime. Catchment includes the Cray and Usk Reservoirs, used for PWS. River Usk is regulated and abstraction allowed downstream.
56007	Senni at Pont-Hen-Hafod	19.9	SN9282625467	292826.0	225467.0	51°55'02.5750"N 3°33'34.8961"W	51.91738	-3.55969	Senni	Pont-Hen-Hafod	219.6	NRW	056007	56	1967-01-01		FV		24.0		true	false	false	false	false	false	false	false	true	false	false	false	false	N	1967-12-01	2023-09-30	1.036	0.033	1976-08-23	1976-08-26	22.6	2018-10-12	2018-10-12	0.102	0.301	0.528	2.48	3.8	0.36	20393	20078	98.455				221.1	253.2	369.5	565.8	651.7	1942	1974	0.0392	0.0022	0.7926	0.1542	0.0011	0.0507	0.013	0.9263	0.0049	0.0044			1.0		0.0528		0.2223	0.62	0.495	1.0	198.4	38.96	68.0	94.1	13.0	9.97	5.85	388	342	0.13	221.1	19.29	0.573	0.774	0.0433	0.0			0.0005					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump weir from Dec 1997; previously standard Crump weir. Natural flow regime.	Flat V Crump weir (width 7.01m) from Dec 1997; previously standard Crump weir. Concrete side walls form a contained approach to the weir, starting from road bridge approx 10 m u/s. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Bridge abutments funnel flow to station and prevent bypassing. Flows contained up to wingwalls of about 2.27 m. Beyond end of the walls, approx 10 m d/s, river banks significantly lower allowing flow area to expand rapidly again. Fish baffles on weir face may cause slight backing up at low flows. Crump weir was full range, modular, theoretically calibrated and confirmed by gaugings. Modification to flat V in 1997 necessitated change in peak flow rating. Three peak flow ratings apply over the period of record. Check gaugings confirm rating only to medium flows. Original fish pass removed in 1973.	Gap in record in 2001 due to Foot and Mouth restrictions.	Natural catchment draining from high rainfall, upland area within Brecon Beacons national park. Impermeable bedrock geology (Old Red Sandstone). Dominant land use is grassland, supporting livestock farming, with mainly peaty soils. Small patches of heathland and forest.	Natural to within 10% at Q95.
56011	Sirhowy at Wattsville	76.1	ST206912	320600.0	191200.0	51°36'50.4239"N 3°08'53.2525"W	51.61401	-3.14813	Sirhowy	Wattsville	68.7	NRW	056011	56	1970-01-01	1983-12-31	FVVA		207.0	12.3	true	true	false	true	false	false	false	false	false	false	false	false	false	S	1970-03-01	1983-05-31	2.124	0.105	1976-08-21	1976-08-21	59.39	1979-12-27	1979-12-27	0.346	0.741	1.294	4.802	6.976	0.5	4840	4658	96.24	1970-03-01	1983-06-01	32.15	65.2	172.2	318.1	470.0	615.7	1535	1481	0.1335	0.04	0.4475	0.2154	0.1299	0.1331	0.0456	0.4506	0.2108	0.1547		0.858	0.0024	0.1396	0.0133	0.0089	0.2004	0.49	0.523	0.973	138.0	30.46	53.4	71.7	11.9	34.46	18.36	320	165	0.18	65.8	76.41	0.464	0.982	0.0321	0.0456	0.046	0.952	0.0708	0.757	0.888			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile Flat V weir. Reservoirs in catchment affect runoff. Station closed in 1983.	Crump profile Flat V weir. Station closed in 1983.	Weir crest width approx 12m and cross slope of 1:10. Rb rises steeply up valley side after narrow berms. Severe accretion problems. Rating fits gaugings very well up to highest at 1.2m. Upper limit raised to slightly below wingwall height (2.0m). High confidence in theoretical rating. Reservoirs in catchment affect runoff.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Narrow, linear catchment trending approx N-S. Predominantly upland, mixed geology of moderate permeability - Pennant and Upper Coal series overlying Lower Coal series. Some Boulder Clay and gravels on valley floor. Predominantly grazing, moorland in N, with some urban development in lower valley.
56012	Grwyne at Millbrook	82.2	SO2405417590	324054.0	217590.0	51°51'06.1750"N 3°06'14.4670"W	51.85172	-3.10402	Grwyne	Millbrook	82.7	NRW	056012	56	1970-01-01		C		77.0	26.5	true	true	false	true	false	false	false	false	false	true	false	false	true	S	1971-01-01	2023-09-30	2.065	0.152	1976-08-23	1976-08-26	37.1	1979-12-27	1979-12-27	0.323	0.785	1.36	4.73	6.34	0.58	19266	17997	93.413	1971-01-12		22.525	85.0	208.5	430.0	655.8	810.2	1278	1241	0.1737	0.009	0.4817	0.2873	0.0055	0.1928	0.0467	0.4394	0.3163	0.0033			1.0					0.54	0.648	0.984	240.8	18.04	46.1	58.9	10.4	25.61	11.75	431	147	0.15	85.0	82.8	0.186	0.593	0.0132	0.0001			0.0011			1984..1987		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir of reinforced concrete and local stone with phosphor bronze crest. Reservoirs in catchment affect runoff.	Crump weir of reinforced concrete and local stone with phosphor bronze crest, 10.67m wide.	Limited u/s shoaling and weed growth on weir may affect low flows. Fish counter on d/s side of weir not thought to affect performance. Flows contained up to 2.27m. No bypassing on either bank at high flows - channel contained by road wall on lb. Three peak flow ratings applied across period of record. NRW confirm no high flow gaugings; highest gauging at 7.6 cumecs. Reservoirs in catchment affect runoff.	Gap in data between 1985 and 1988. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Impermeable, predominantly Old Red Sandstone conglomerates, sandstone and marl. Predominantly grassland for livestock farming, significant heathland and some afforestation.
56013	Yscir at Pont-Ar-Yscir	62.8	SO0034830405	300348.0	230405.0	51°57'47.3852"N 3°27'06.4692"W	51.96316	-3.4518	Yscir	Pont-Ar-Yscir	161.2	NRW	056013	56	1972-01-01		C		84.0		true	true	false	true	false	true	true	false	true	true	true	true	true	N	1972-05-01	2023-09-30	1.925	0.074	2022-08-29	2022-09-01	29.04	1979-12-27	1979-12-27	0.184	0.553	1.093	4.61	6.502	0.46	18780	18719	99.675	1972-01-11		34.59	156.9	254.3	361.9	429.4	472.6	1426	1299	0.0673	0.0076	0.7192	0.1921	0.0016	0.0476	0.007	0.894	0.047	0.0045			1.0		0.0003	0.0135	0.0128	0.61	0.495	1.0	137.9	38.25	45.5	59.5	10.7	23.08	11.95	349	151	0.18	156.9	63.55	0.343	0.959	0.0257	0.0			0.0003					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir with aluminium-bronze crest. Natural flow regime.	Crump weir with aluminium-bronze crest, width 9m.	Wingwalls up to 2.45m, then old railway abutments to 3.28m so station not bypassed. Banks either side of old railway crossing approx 2.3m. No cableway. Calibration confirmed by gaugings. Full range, rarely non-modular. Two peak flow ratings applied across period of record.	Flows since 01/09/1999 reprocessed in 2011 due to new rating, leading to small changes in GDFs and HIFs. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Old Red Sandstone, low permeability. Natural catchment draining from upland areas of Cambrian Hills. Permeable strata in lower catchment, seldom wet. Land use is mainly grassland, mostly hill farming. Upland heath in upper catchment with seasonally wet peaty soils. Isolated patches of forest.	Natural to within 10% at the Q95.
56014	Usk at Usk Reservoir	17.0	SN8398929047	283989.0	229047.0	51°56'52.0170"N 3°41'21.5936"W	51.94778	-3.68933	Usk	Usk Reservoir	267.2	NRW	056014	56	1979-01-01		C		2.3	36.0	true	false	false	false	false	false	false	false	false	false	false	false	false	S	1979-08-01	2023-09-30	0.388	0.041	1989-02-02	1989-02-02	9.46	2020-02-15	2020-02-15	0.091	0.138	0.171	0.913	1.6	0.5	16132	14638	90.739				269.3	308.7	362.0	431.4	590.5	1595	1657	0.1401	0.0027	0.613	0.1741		0.1827	0.0003	0.7431	0.0064	0.0018			1.0				0.1531	0.62	0.388	0.772	95.6	47.4	57.2	77.7	12.3	9.52	4.29	367	85	0.14	269.3	17.65	0.223	0.994	0.0175	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Outflows from Usk Reservoir. Highly artificial regime, and water balance substantially affected by PWS.
56015	Olway Brook at Olway Inn	105.1	SO3847501090	338475.0	201090.0	51°42'18.5765"N 2°53'30.2991"W	51.70516	-2.89175	Olway Brook	Olway Inn	15.0	NRW	056015	56	1976-01-01		C		15.8	9.1	true	false	false	false	false	false	false	false	false	true	false	false	true	N	1975-01-01	2023-09-30	1.681	0.028	1976-08-25	1976-08-27	32.9	1990-02-07	1990-02-07	0.11	0.326	0.697	4.07	6.75	0.43	17805	17783	99.876				13.0	35.6	77.0	204.7	304.4	1001	947	0.0894	0.1502	0.7405		0.0169	0.0896	0.3519	0.5411	0.0038	0.0134			1.0		0.011		0.1981	0.34	0.598	1.0	97.9	30.41	41.1	51.7	10.6	18.63	11.01	92	247	0.07	13.0	110.22	0.516	0.698	0.0589	0.0033			0.0034					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir. Natural flow regime.	Crump weir, 4.0m wide. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Bypassing occurs above 1.8m into surrounding fields. Problems of backing up at high flows. GDFs and HIFs since 1982 reprocessed in 2014 following rating review, with effect of increasing flows >10 cumecs. Two peak flow ratings applied across period of record. Agrees with gaugings up to 1.0m when rating starts to overestimate flows. Rating does not have over bank limb so recommended rating upper limit 1.0m.		Lower Old Red Sandstone, Boulder Clay cover in NW and alluvium in valley bottom. Mainly grassland, with some arable agriculture and patchy woodland.	Natural to within 10% at Q95.
56019	Ebbw at Aberbeeg	71.7	SO2097501467	320975.0	201467.0	51°42'22.8739"N 3°08'42.1280"W	51.70635	-3.14504	Ebbw	Aberbeeg	149.0	NRW	056019	56	1984-01-01		VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1984-01-01	2023-09-30	2.624	0.156	2022-08-14	2022-08-14	50.0	1990-02-07	1990-02-07	0.46	1.02	1.55	5.94	8.63	0.52	14518	14415	99.291				149.3	258.6	384.0	507.4	580.3	1559	1482	0.0845	0.0263	0.3792	0.3292	0.1458	0.1256	0.0284	0.4654	0.2019	0.1726		0.724		0.276		0.005	0.0937	0.54	0.49	0.957	187.6	34.19	53.0	70.1	11.5	19.27	9.42	381	184	0.2	149.3	71.64	0.854	1.109	0.0377	0.0623	0.638	1.083	0.0795	0.722	1.026			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard weir with notch for fish passage. Open channel immediately upstream of a vertical-drop weir.	Non-standard weir. Station rebuilt in 2014/15, located closer to bank than previous station. Station removed from peak flows dataset in August 2024 (WINFAP Files v13).	Channel sides reinforced with concrete in a trapazoidal contruction for 30m u/s of weir. "Rocky Ramp" fish passage built in 2013 d/s of weir, plus a 1m wide x 0.3m deep notch cut in to the centre of the weir for fish passage. Cableway added in 2015 for high flow gauging. Four peak flow ratings applied over period of record.	Peak flows after 2020 rejected pending rating review.	Mixed geology of varying permeability, predominantly Pennant and Upper Coal Series overlying Lower Coal Series. Upland catchment with moorland and rough grazing, but with significant urban development in the valley.
57001	Taf Fechan at Taf Fechan Reservoir	33.7	SO060117	306000.0	211700.0	51°47'45.6778"N 3°21'52.0560"W	51.79602	-3.36446	Taf Fechan	Taf Fechan Reservoir	297.9	NRW	057001	57	1937-01-01		MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1936-11-01	2023-09-30	0.783	0.009	1989-11-27	1989-11-27	30.02	1965-12-18	1965-12-18	0.219	0.263	0.296	1.98	3.43	0.43	31745	24788	78.085				315.5	358.8	479.7	631.0	884.7	1911	1938	0.1416	0.0003	0.555	0.2169		0.2191		0.5415	0.1904	0.0023		0.069	0.931			0.0921	0.1267	0.54	0.312	0.753	168.8	52.67	61.7	84.6	12.1	12.99	5.94	484	187	0.25	315.5	33.52	0.248	0.932	0.0195	0.0002			0.0002					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station measuring reservoir outflows. Artificially affected regime, and water balance substantially affected by exports for PWS.	Station measuring reservoir outflows.	Post 1979 weir constructed in order to monitor the outflow of Pontsticill Reservoir. It was originally constructed as a 12.5m wide Flat Vee weir, with 1:2 upslope, 1:5 downslope and 1:10 cross slope. In 2015, flood alleviation works reduced right bank by roughly 1m to allow installation of a bypass channel.	From 2016 onwards, flood alleviation works mean site only measures lowest flows.		Prior to 1973, station believed to be record of flows in compensation flume and flood channel. Post 1979, station believed to be record only of flows in compensation flume. Station should be regarded as a low flow station.
57002	Taf Fawr at Llwynon Reservoir	43.0	SO0118611166	301186.0	211166.0	51°47'25.4082"N 3°26'02.7261"W	51.79039	-3.43409	Taf Fawr	Llwynon Reservoir	236.3	NRW	057817	57	1931-01-01		MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1931-10-01	2023-09-30	1.084	0.0	1941-03-31	1945-06-20	34.26	1965-12-18	1965-12-18	0.184	0.266	0.374	2.73	3.568	0.34	33603	27921	83.091				234.4	326.3	437.2	642.4	867.5	2057	1980	0.0973	0.0059	0.6185	0.2306	0.0002	0.1528	0.0025	0.6288	0.189	0.0073		0.0744	0.9256			0.1107	0.2844	0.56	0.307	0.826	166.4	54.27	63.0	85.3	12.3	13.63	6.53	461	186	0.25	234.4	44.05	0.272	0.734	0.0208	0.0003			0.0001					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Reservoir outflows. Artificial regime, and water balance substantially affected by exports for PWS.	Reservoir outflows.		Prior to 1987, station believed to be record of flows in compensation flume (now NRW gauge 57817) and flood channel (now NRW gauge 57816). Post 1987, station believed to be record only of flows in compensation flume, which surcharges when flows exceed about 1m3/s, that is flood channel flow no longer measured. Hence, station should be regarded as a low flow station.	Old Red Sandstone, mainly peaty soils. Predominantly grassland and heath, used for rough grazing.	Artificial regime, and water balance substantially affected by exports for PWS.
57003	Taff at Tongwynlais	486.9	ST1316581810	313165.0	181810.0	51°31'42.5957"N 3°15'11.3574"W	51.5285	-3.25315	Taff	Tongwynlais	23.8	NRW		57	1961-01-01	1972-12-31	VA	290.0		9.1	true	false	false	false	false	false	false	false	false	false	false	false	false	SEI	1965-10-01	1972-12-31	21.373	3.058	1967-07-23	1967-07-24	416.3	1965-12-18	1965-12-18	4.104	7.702	11.83	49.56	68.81	0.44	2649	2649	100.0				23.6	140.3	303.9	481.5	884.7	1817	1801	0.1985	0.0247	0.5089	0.1153	0.1094	0.2252	0.0149	0.528	0.0997	0.1246		0.6651	0.1718	0.1632	0.0157	0.0759	0.3589	0.5	0.42	0.952	162.3	42.2	62.6	83.1	12.7	57.3	32.06	307	160	0.14	23.6	486.88	0.689	0.88	0.041	0.042	0.639	0.809	0.0639	0.757	0.787			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Natural river section with bed control. Reservoirs in upper catchment affect runoff. Abstraction and effluent returns in valley. Station used for flood warning.	Natural river section with bed control. Channel width approx 40m. Station closed 1972. Telemetry installed in 1999 and site opened as a flood warning station. Removed from peak flows dataset in September 2019 (WINFAP Files v8). Main station at 57005 Pontypridd.	Station located on left bank. Rated by current meter. Well-defined rating to bankfull, estimated thereafter but based on model for Treforest flood protection scheme. Most recent rating is valid from January 1965.	NRFA hold no flow data past the stations closure in 1972.	Mainly Coal Measures in the south, with Millstone Grit. Carboniferous Limestone and Old Red Sandstone in the north. Some peat on hills, Boulder Clay and Alluvium in valleys. Taff valley, u/s of station, is narrow and steep. Land use is pasture, some forestry and moorland in headwaters, some urban development in lower valley.	Direct water supply reservoirs in upper catchment affect runoff. Abstraction and effluent returns in valley for mining, industry and agriculture.
57004	Cynon at Abercynon	106.0	ST0794095652	307940.0	195652.0	51°39'07.5398"N 3°19'55.5224"W	51.65209	-3.33209	Cynon	Abercynon	81.2	NRW	057004	57	1957-01-01		FVVA	200.0	30.6	14.3	true	true	false	true	false	true	true	false	true	true	true	true	true	SE	1957-10-01	2023-09-30	4.482	0.283	1976-08-23	1976-08-23	119.2	1965-12-18	1965-12-18	0.579	1.33	2.189	10.88	16.31	0.4	24106	23741	98.486	1957-09-01		76.22	81.6	143.8	266.7	399.7	515.6	1762	1773	0.219	0.0278	0.4815	0.1167	0.1241	0.2573	0.0193	0.4891	0.0961	0.1345		0.7184	0.0113	0.2703	0.0002	0.0755	0.3433	0.54	0.421	0.972	142.3	40.18	66.9	90.0	13.1	28.85	15.26	270	172	0.11	81.6	103.3	0.729	0.86	0.0522	0.0392	0.626	0.79	0.0698	0.757	0.731	1960		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir. Station located 900m upstream of confluence with Taff. Flow influenced by reservoirs for PWS and effluent returns from industrial areas in valley.	Flat V weir from June 1966 - channel control at high flows. Located 900m upstream of confluence with Taff. Station opened Sept 1957 as rated section.	Weir width: 14.24m; cross-slope 1:20, u/s 1:2, d/s 1:5. Over-topped by extreme floods - e.g 1979; no gaugings above bankfull. One peak flow rating applied across period of record. Provides good fit to available gaugings.	Data prior to 1962 of poorer quality than those since, although Sept / Oct 1959 minima realistic. Flow minima during period of missing data in 1960 likely to have been 0.30-0.35 cumecs. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Coal Measures with Millstone Grit on northern boundary. Carboniferous Limestone occurs in Penderyn area. Boulder Clay cover and alluvium in valley. Lower part of Cynon Valley is steep sided but in the north it is less steep. Livestock farming and heathland in upland area of peaty soils, seasonally wet. Extensive forest, mainly in S half. Extensive urban and industrial development in valley, which is generally steep-sided. Open cast coal abstraction in upper areas.	Small impounding reservoirs for PWS, effluent returns from industrial areas in valley.
57005	Taff at Pontypridd	454.8	ST0792489715	307924.0	189715.0	51°35'55.4101"N 3°19'50.7289"W	51.59873	-3.33076	Taff	Pontypridd	45.1	NRW	057005	57	1968-01-01		FVVA		58.3	5.9	true	true	true	true	false	false	false	false	false	false	true	false	false	SGEI	1970-10-01	2023-09-30	21.175	1.7	1976-08-23	1976-08-23	427.0	2020-02-15	2020-02-15	3.62	7.06	10.9	50.2	76.1	0.44	19358	19358	100.0	1968-03-01		353.75	47.3	160.0	317.5	487.9	884.7	1845	1833	0.1897	0.024	0.5144	0.1238	0.1031	0.225	0.014	0.53	0.1065	0.1168		0.646	0.1837	0.1703	0.0125	0.0818	0.3434	0.5	0.409	0.949	163.6	43.27	63.6	84.7	12.7	45.92	22.67	320	156	0.14	47.4	451.69	0.612	0.893	0.0383	0.0405	0.642	0.741	0.06	0.754	0.734			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard flat V weir. Velocity area station for high flows. Flow regime influenced by reservoirs and returns.	Non-standard flat V weir. Velocity area station for high flows.	Weir width: 32m; cross-slope 1:20 u/s and d/s. Top of right bank is playing field, left bank much higher and is former railway bank. Full range and flows contained within the section. High flow gaugings taken using ADVP to around 3m. One peak flow rating applied across period of record. Provides good fit to available gaugings.	Weir refurbished Sep-Nov 1996, and weir was recapped Sep-Oct 1997; these data have been estimated. Full period of record peak flow data reviewed and released in Oct 2018 (WINFAP Files v7).	Coal Measures, some Boulder Clay cover and alluvial deposits in valleys. Mainly upland area with peaty soils on hills, seasonally wet. Catchment is largely grassland with livestock farming on hills, heathland at highest elevations and some forest cover. Extensive urban and industrial development in valleys.	Series of six PWS impounding reservoirs in the upper catchment (Taf Fawr and Taf Fechan) affects runoff. Runoff at low flows influenced by groundwater abstraction/recharge and abstraction for industry/agriculture. Increased by effluent returns and minewater discharges.
57006	Rhondda at Trehafod	100.5	ST0528390946	305283.0	190946.0	51°36'33.6662"N 3°22'09.1532"W	51.60935	-3.36921	Rhondda	Trehafod	68.3	NRW	057006	57	1968-01-01		VA	330.0		15.5	true	true	true	true	false	false	false	false	false	false	false	false	false	SPGE	1970-10-01	2023-09-30	6.042	0.281	1984-07-21	1984-07-21	108.0	2020-02-15	2020-02-15	0.751	1.85	3.13	14.3	21.2	0.39	19358	19054	98.43	1968-06-01		116.95	68.5	168.7	325.4	490.4	599.4	2208	2183	0.2404	0.0346	0.4509	0.106	0.1041	0.2588	0.0105	0.4733	0.1128	0.1424		0.7496		0.2504	0.0241	0.1713	0.2877	0.49	0.365	0.986	210.3	47.76	71.8	94.9	13.7	25.7	14.22	328	116	0.16	68.8	102.69	0.667	0.827	0.0372	0.0591	0.641	0.707	0.0761	0.743	0.712	1967..1980		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; concrete trapezoidal channel with armoured side slopes. Flows affected by reservoir and mine water discharge.	Velocity area station formalised concrete trapezoidal channel. Constructed Dec 1980 - Sept 1981, river bed width 18m, bankfull width approx 28m.	Armoured side slopes 1:1.5. Full range. Two peak flow ratings applied across period of record. Recent ratings provide acceptable fit to gaugings. Upper limit at 2.5m, as recommended by NRW, as only two gaugings above this level.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7). WY1980/1981 rejected during period of weir construction. Full period-of-record reprocessed in 2024.	Coal Measures with alluvial deposits and Boulder Clay in valleys, peat in upper catchment. Upland area with livestock farming and heathland on hills, around a quarter forest cover (mainly on high ground to NW). Extensive urban and industrial development in valleys.	Flows affected by mine water discharge above station, and Trehafod Flood Alleviation Scheme. Small impounding reservoir for PWS in upper catchment.
57007	Taff at Fiddlers Elbow	194.5	ST0892095153	308920.0	195153.0	51°38'51.9676"N 3°19'04.0727"W	51.64777	-3.3178	Taff	Fiddlers Elbow	82.5	NRW	057007	57	1973-01-01		FVVA		76.0	9.4	true	true	true	true	false	false	false	false	false	false	false	false	false	SGEI	1973-05-01	2023-09-30	7.167	0.555	1976-08-22	1976-08-22	215.0	2020-02-15	2020-02-15	1.378	2.37	3.48	16.82	25.2	0.45	18415	18415	100.0	1973-03-01		165.95	82.4	194.5	362.6	541.7	884.7	1731	1719	0.1382	0.0146	0.5547	0.159	0.0834	0.1741	0.0096	0.5806	0.1296	0.0919		0.4578	0.422	0.1202	0.0162	0.0597	0.3205	0.52	0.402	0.906	153.1	44.68	58.4	78.7	12.0	37.87	20.71	367	180	0.2	82.4	193.84	0.514	0.862	0.033	0.03	0.654	0.716	0.0441	0.763	0.677			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir, velocity area station for high flows. Flows affected by mine water discharges, impounding reservoirs and industrial abstractions in valley.	Flat V weir with concrete side walls. Velocity area station for high flows.	Weir width 23m; cross-slope 1:20, 1:5 d/s, 1:2 u/s. Full range. Station and cableway were moved during October 1982, so two peak flow ratings applied across period of record. Valid date for current rating (28 March 1985) is the date of the first gauging undertaken following the move. Some scatter in gaugings just above wing walls.	Data prior to 1962 of poorer quality than those since, although Sept / Oct 1959 minima realistic. Flow minima during period of missing data in 1960 likely to have been 0.30-0.35 cumecs. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Coal Measures with Millstone Grit and Carboniferous Limestone in northern area. Boulder Clay and Alluvial deposits in valleys. Mainly upland area with peaty soils, seasonally wet. Land use is largely grassland, heathland at highest elevations and some forest. Considerable urban development in valley bottom. Half of catchment within Brecon Beacons National Park.	Series of six PWS impounding reservoirs in the upper catchment (Taf Fawr and Taf Fechan) affects runoff. Runoff at low flows influenced by groundwater abstraction/recharge and abstraction for industry/agriculture. Increased by effluent returns and minewater discharges.
57008	Rhymney at Llanedeyrn	178.7	ST2242282122	322422.0	182122.0	51°31'57.5515"N 3°07'11.3136"W	51.53265	-3.11981	Rhymney	Llanedeyrn	11.8	NRW	057008	57	1973-01-01		FVVA		65.2	11.1	true	true	false	true	false	false	false	false	false	true	false	false	true	SPGE	1973-01-01	2023-09-30	5.806	0.218	1990-09-16	1990-09-16	115.5	1990-02-07	1990-02-07	0.752	1.83	3.12	13.7	20.2	0.46	18535	18535	100.0	1972-09-01		91.01	13.1	70.4	214.1	394.8	615.7	1445	1409	0.1729	0.065	0.4989	0.096	0.1524	0.1393	0.0789	0.5348	0.0871	0.156		0.7873	0.1035	0.1091	0.0606		0.3495	0.48	0.521	0.981	125.7	33.17	50.6	66.5	11.9	51.98	27.45	224	154	0.17	13.1	185.6	0.708	0.766	0.0538	0.0479	0.684	1.008	0.0767	0.786	0.976			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir with vertical side walls, velocity area station for high flows. Impounding reservoirs for PWS, groundwater abstraction/recharge and effluent returns all affect flow.	Flat V weir with vertical side walls, velocity area station for high flows.	Weir width: 15m, cross-slope 1:20, 1:5 u/s, 1:2 d/s. Full range. Extensive floodplains on both banks. Cardiff Eastern Avenue bypass (200m d/s) keeps flow on floodplain. Station is bypassed at high flows but high flow gaugings are taken from the bridge upstream where flows are contained. Two peak flow ratings applied across period of record. Rating needs reviewing following the reprocessing of high flow gaugings.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Mainly Coal Measures (moderate permeability). Peaty soils on hills, seasonally wet. Majority grassland with upland heath at highest elevations in N, some forest (in lower valley to S). Livestock farming on uplands; dairy and livestock farming in lower catchment. Significant urban and industrial development in the valleys.	Impounding reservoirs for PWS in upper catchment affect flow. Flows also influenced by groundwater abstraction/recharge and effluent returns.
57009	Ely at St Fagans	145.0	ST1210377055	312103.0	177055.0	51°29'08.1254"N 3°16'02.1837"W	51.48559	-3.26727	Ely	St Fagans	11.0	NRW	057009	57	1975-01-01		FVVA			12.7	true	true	true	true	false	false	false	false	false	false	false	false	false	EI	1975-01-01	2023-09-30	4.726	0.296	1984-08-21	1984-08-21	81.5	1998-03-06	1998-03-06	0.637	1.57	2.69	11.0	15.5	0.47	17805	17805	100.0	1974-10-22		54.09	9.2	35.7	86.0	203.4	410.6	1401	1350	0.2077	0.0783	0.5791	0.0026	0.1242	0.1411	0.0604	0.657	0.0046	0.1362		0.6539	0.0811	0.265	0.2676	0.0057	0.4701	0.47	0.577	0.984	81.9	34.24	47.1	61.0	12.1	32.14	18.33	104	145	0.1	9.3	146.44	0.813	0.859	0.0753	0.0288	0.673	1.165	0.0461	0.811	1.152			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir, velocity area station for high flows. Flows affected by sewage works discharges and some industrial/agricultural abstractions.	Flat V weir with concrete side walls, velocity area station for high flows.	Weir width: 10.6m; cross-slope 1:20, 1:2 u/s, 1:5, d/s. Full range with flow gauged up to 96 cumecs. A proportion of flow (thought to be around 10%) bypasses the gauging station at higher levels, hence, above 55 cumecs, the rating is based on a hydraulic model in addition to gaugings, to account for the bypass flow. Two peak flow ratings applied across period of record.	Some early (poorer quality) data available (station 57805; 1957-60). Flows from 7/3/2010 to 10/5/2010 suspect due to temporary damming of river at site. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Mainly Coal Measures with some Millstone Grit in northern area; mixture of Trias, Lias, limestone and Old Red Sandstone to the S. Extensive superficial deposits, Boulder Clay in N and sands and gravels in S. Soils have permeable substrate. Mainly pasture, with patches of forest. Dairy farming in lowland area with some built-up areas.	Flows affected by sewage works discharges u/s. Some industrial and agricultural abstractions.
57010	Ely at Lanelay	39.4	ST0335982684	303359.0	182684.0	51°32'05.1356"N 3°23'40.9548"W	51.53476	-3.39471	Ely	Lanelay	46.0	NRW	057010	57	1974-01-01		FVVA	130.0	4.3	22.0	true	true	true	true	false	false	false	false	false	false	false	false	false	EI	1974-09-01	2023-09-30	1.585	0.042	2004-06-25	2004-06-25	40.7	1998-03-06	1998-03-06	0.169	0.483	0.834	3.79	5.53	0.39	17927	17820	99.403	1967-07-31		38.798	47.0	90.8	166.6	258.7	410.6	1604	1620	0.1829	0.04	0.6404	0.0092	0.1144	0.1211	0.0386	0.7114	0.0106	0.1183		0.9414		0.0586	0.058		0.7014	0.47	0.455	1.0	117.9	39.0	55.5	70.2	12.8	12.46	6.51	172	148	0.22	47.0	38.88	0.532	0.716	0.0442	0.0219	0.618	1.206	0.0338	0.751	1.108	1973..1998	1973-10-01..1999-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with standard Flat V weir. Flows affected by effluent returns and industrial/agricultural abstractions.	Velocity area station with standard Flat V weir.	Non-standard Flat V weir installed in May 1974 to stabilise bed. New flat V weir installed 1999 resulting in new rating being applied. Fish baffles installed on downstream side of weir in 2000. Multiple peak flow ratings applied across period of record. Most recent rating validated by gaugings up to 1.8m.	Flows from 16/10/2010 to 3/11/2010 suspect due to blocking of the inlet pipe. Peak flows from 01/10/1973 to 30/09/1999 rejected because of uncertainty in rating curves due to lack of gaugings in the upper limb. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). Ratings reviewed in 2022 and data reprocessed for full period of record.	Coal Measures. Ely valley generally steep sided. Some forest. Soils have permeable substrate. Lowland catchment. Dairy and livestock farming with urban and industrial development in the valley.	Flows affected by effluent returns and industrial/agricultural abstractions.
57014	Rhymney at Bargoed	63.2	ST1559698381	315596.0	198381.0	51°40'40.1844"N 3°13'19.6083"W	51.67783	-3.22211	Rhymney	Bargoed	617.0	NRW	057014	57	1978-01-01		FV				true	true	true	true	false	false	false	false	false	false	false	false	false	SE	2001-03-22	2023-09-30	2.268	0.147	2022-08-13	2022-09-19	60.0	2020-02-15	2020-02-15	0.274	0.622	1.07	5.76	8.39	0.4	8228	8219	99.891	2001-03-22		54.073	143.4	235.5	354.2	458.4	615.7	1552	1502	0.066	0.0275	0.531	0.2537	0.1048	0.071	0.0355	0.5563	0.2297	0.1019		0.7702		0.2298			0.2471	0.53	0.439	0.959	144.0	38.42	53.8	71.4	11.7	20.08	10.08	351	156	0.26	143.4	63.56	0.33	1.003	0.0258	0.037	0.656	0.708	0.0541	0.73	0.708	2000		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir constructed 30m u/s of original site. Previously named 'Gilfach Bargoed'. Flood warning station.	Bargoed gauging station (previously called Gilfach Bargoed) opened in 1967, measuring stage in a natural river section; a weir was constructed in 1975 and a cableway added in 1977. The rating was unstable due to silting and, from 1986, the station operated as a flood warning station only. A new gauging station with a flat V weir was constructed in 2001, 30m u/s of the original site. Still used as flood warning station.	Bed at gauging site is rocky and underlain by concrete weir approach channel. Fish baffles installed on downstream side of weir in 2001. Two peak flow ratings apply to period of record. Ratings based on gaugings and extended using a modelled rating.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Mainly Coal Measures. Peaty soils on hills with livestock farming and heathland. Significant urban and industrial development, with some forestry in valley bottoms.	Small impounding reservoirs for PWS in the upper catchment; some effluent returns.
57015	Taff at Merthyr Tydfil	104.1	SO0430806814	304308.0	206814.0	51°45'06.5413"N 3°23'15.5014"W	51.75182	-3.38764	Taff	Merthyr Tydfil	170.6	NRW	057015	57	1978-01-01		FVVA		10.6	11.4	true	true	true	true	false	false	false	false	false	false	false	false	false	SP	1978-10-01	2023-09-30	3.895	0.277	1984-08-22	1984-08-22	132.0	1979-12-27	1979-12-27	0.73	1.1	1.49	9.65	15.4	0.36	16436	16436	100.0	1978-09-01		93.68	172.0	295.0	410.4	599.9	884.7	1884	1858	0.1238	0.0069	0.5777	0.2052	0.0252	0.1794	0.0029	0.5956	0.1671	0.0326		0.2286	0.7353	0.036		0.1041	0.2605	0.55	0.352	0.85	156.6	49.89	60.5	82.4	12.1	21.28	11.1	430	176	0.22	172.0	111.25	0.375	0.807	0.0273	0.0087	0.636	0.212	0.0121	0.764	0.204			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir; velocity area station for high flows. Flows affected by large direct PWS reservoirs.	Flat V weir; velocity area station for high flows.	Structure is 14 m wide (from 1998), 1:20 cross slope, 1:2 d/s, 1:5 u/s. Full range. Control provided by a flat V weir throughout the record, with no change in profile, although the weir has been reconstructed. Modular throughout range. Original Flat V structure damaged by flood. Structure provides control at low flow but velocity area rating applied for high flows. Two peak flow ratings across period of record confirmed by check gaugings.	Data missing from Digital Archive from 01/12/79 to 29/02/80 and 01/04/80 to 31/05/80, PoTs and AMAX for these periods are from CEH POTs. Flow records from 1978 updated in August 2014 due to rating change. Dec 1979 flood (which destroyed the weir) may have been higher but considerable uncertainty surrounds magnitude. WY1998/1999 AMAX should be treated with caution as extrapolated, may have been overestimated. Flows for the period 03/06/13 to 15/08/13 are backfilled from Troedyrhiw FWS (57032) due to weir refurbishment. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Upland catchment in Brecon Beacons National Park. Millstone Grit and Carboniferous Limestone. Old Red Sandstone in upper areas; some Boulder Clay in valleys. The two tributaries cross a Carboniferous Limestone outcrop. Mainly peaty soils, seasonally wet. Mainly grassland supporting livestock farming, significant upland heath and some forest. Minor urban development just u/s of station.	Series of six PWS impounding reservoirs in the upper catchment (Taf Fawr and Taf Fechan) affects runoff.
57017	Rhondda Fawr at Tynewydd	16.6	SS9325998687	293259.0	198687.0	51°40'36.3871"N 3°32'42.5340"W	51.67677	-3.54515	Rhondda Fawr	Tynewydd	188.6	NRW	057809	57	2001-04-17		FVVA			28.4	true	true	true	true	false	false	false	false	false	false	false	false	false		2001-04-17	2023-09-30	1.174	0.066	2018-07-26	2018-07-26	18.58	2020-02-15	2020-02-15	0.15	0.35	0.617	2.76	4.071	0.35	8202	8202	100.0	2001-04-17		24.32	186.1	259.4	475.2	522.3	599.4	2470	2458	0.5023	0.0371	0.2018	0.1481	0.0243	0.5197	0.0057	0.3028	0.1354	0.0357		0.7073		0.2927	0.0218	0.4764	0.1057	0.57	0.317	0.999	217.4	52.88	75.0	101.4	13.8	6.66	3.26	427	144	0.19	186.4	16.64	0.204	0.529	0.0117	0.0135	0.523	0.315	0.0156	0.639	0.293	2000		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir with fish baffles on d/s slope. Flood warning station. Natural flow regime.	Flat V weir in good condition with fish baffles on d/s slope. Channel is 7.35m wide. Flood warning station.	1.667m high concrete wing walls either side of weir. Full range; no bypassing. Fish baffles installed on downstream side of weir in 2001. Gauging section is concrete channel with good bed stability, though prone to shoaling which has an adverse effect on the modular limit of the weir. The shoaling cannot be moved because there is a main gas line directly underneath and the operations delivery team cannot get into the channel to remove it. Low to medium flows are wade-gauged and high flows are gauged by cableway. Flows for levels above 1.1m are based on a hydraulic model. Peak flow Rating A combines the original rating with the modelled out of bank Hyder rating. Site has been gauged since 2001 but has only recently been rated (2011). Rating A fits the gaugings very well.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Coal Measures with alluvial deposits and Boulder Clay in valleys, peat in upper catchment. Livestock farming and heathland on hills; forest cover on high ground to NW. Extensive urban and industrial development in valleys.	Natural flow regime.
58001	Ogmore at Bridgend	158.0	SS9037979437	290379.0	179437.0	51°30'11.5277"N 3°34'50.7535"W	51.5032	-3.58076	Ogmore	Bridgend	13.8	NRW	058001	58	1960-01-01		FVVA			11.2	true	true	true	true	false	false	false	false	false	false	false	false	false	PEI	1963-10-01	2023-09-30	6.83	0.331	1984-08-20	1984-08-20	139.3	2012-12-22	2012-12-22	1.007	2.552	4.187	15.46	21.0	0.47	21915	21915	100.0	1960-10-01		118.5	14.9	69.5	194.6	381.6	567.3	1846	1775	0.2148	0.0428	0.5603	0.0456	0.1168	0.1856	0.0276	0.6417	0.0278	0.1172		0.8042	0.0382	0.1577	0.0046	0.0044	0.2335	0.52	0.478	0.998	171.3	36.37	54.4	72.3	12.5	25.34	13.93	211	187	0.18	14.9	157.79	0.556	0.674	0.0378	0.0392	0.652	0.791	0.0565	0.766	0.79			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with Flat V weir (installed in July 1975).	Velocity area station with Flat V weir (installed in July 1975). Channel width: 20m.	Weir 1:20 cross-slope. Two peak flow ratings applied across period of record, the most recent valid from August 1975 after the installation of the Flat V weir. Wingwalls raised from 1.8m to 3.75m in early/mid 1980s, bankfull prior to mid 1980s was 2.65m. Most events have been in-bank at the station, the exceptions being Dec 1960 (0.37m above bankfull) and Nov 1970 (0.08m above bankfull).	Flows estimated for March-April 1986. Early rating (1960-1975) thought to underestimate flows above 1.8m.	Mainly Coal Measures, some Boulder Clay and alluvium in valleys. Peaty soils on hills, seasonally wet. Soils in lowland areas have permeable substrate. Land use is mainly grassland supporting livestock farming in uplands to N, dairy farming in S, with some forest cover throughout. Heavy urban and industrial development in valleys, including significant development just u/s of station.	Abstractions for industrial/agricultural abstractions may reduce flows, but runoff also increased by effluent returns. Bridgend Flood defences built in early 1980s are likely to increase peak flows after that date. The last operational coal mines in this area closed in 1985 and minewater recovery is understood to have occurred by the late 1980s. This will have resulted in lower active discharges to the watercourses and may have also resulted in reduced attenuation in flood events. M4 was built approx 4km upstream of this station in 1980 and may hold back flow in higher events.
58002	Neath at Resolven	190.9	SN8152901698	281529.0	201698.0	51°42'05.3304"N 3°42'56.6627"W	51.70148	-3.71574	Neath	Resolven	15.1	NRW	058002	58	1978-01-01		FVVA	370.0	40.0	13.1	true	true	true	true	false	false	false	false	false	false	false	false	false	SPEI	1962-10-01	2023-09-30	9.707	0.054	1964-10-02	1964-10-03	244.7	2020-02-15	2020-02-15	0.777	2.369	4.287	23.73	36.54	0.33	22280	18561	83.308	1959-11-06		224.0	15.2	148.3	314.8	497.9	734.2	1977	1946	0.2321	0.0308	0.5105	0.1383	0.0363	0.3117	0.0097	0.5845	0.0609	0.0296		0.4848	0.2322	0.2829		0.0333	0.4383	0.62	0.346	0.983	146.9	47.79	63.8	88.1	12.5	32.37	17.56	318	198	0.17	15.2	190.7	0.635	0.832	0.0427	0.0073	0.645	0.646	0.0114	0.704	0.632	1959..1977	1959-11-06..1978-06-30	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir. Flows slightly affected by reservoir in upper catchment, industrial abstractions and effluent returns.	Flat V weir (installed in 1978); channel width: 28m.	Weir 1:20 cross slope, 1:2 d/s, 1:5 u/s, 0.7m V full. Some u/s right-bank spillage during floods; water stored on floodplain and does not bypass. Lb steep. At very high floods, e.g. 1979, river breaks out of banks at left hand bend 0.75km upstream onto floodplain. Diversion into a canal u/s but not significant at high flows. Early open channel section very unstable except for period with a blockstone weir (July 1971 to Sept 1977), but peak flow rating suspect above 0.6m throughout period before Flat V weir. Two peak flow ratings applied across period of record, the most recent is valid from July 1978 after weir installation. Good fit to gaugings. Temporary site installed during weir refurbishment works in 2017 and 2018. Site established in advance to allow for relationship to be built between sites.	Some record available from 1961 to 1978, but channel considered unstable and only low flow gaugings available during that period. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Data from temporary site in 2017-18 used to replace main site data during channel works.	A mainly upland catchment with mixed geology, from S to N: Coal Measures; Millstone Grit; Carboniferous Limestone and Old Red Sandstone. Extensive Boulder Clay cover in mid-catchment. Livestock farming predominates; some areas of upland heath; some forest cover; minor urban development in valley.	PWS reservoir in upper catchment. Industrial abstractions and effluent returns.
58003	Ewenny at Ewenny Priory	62.9	SS9139477981	291394.0	177981.0	51°29'25.1218"N 3°33'56.5145"W	51.49031	-3.5657	Ewenny	Ewenny Priory	8.3	NRW		58	1962-01-01	1970-12-31	VA	18.0		17.7	true	false	false	false	false	false	false	false	false	false	false	false	false	E	1962-10-01	1965-09-30	1.599	0.054	1964-10-02	1964-10-03	17.05	1963-11-18	1963-11-18	0.337	0.705	1.028	3.426	4.587	0.6	1096	1096	100.0				7.7	24.3	69.5	192.2	301.2	1385	1323	0.1458	0.085	0.6297	0.0001	0.1334	0.0662	0.0583	0.6846	0.0217	0.1685		0.3698	0.1817	0.4485	0.0987		0.2628	0.52	0.556	1.0	75.1	29.14	43.3	58.2	11.6	15.21	8.56	85	209	0.24	7.7	63.58	0.826	0.754	0.0963	0.0379	0.655	0.738	0.0613	0.808	0.685			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Runoff influenced by mine water returns. Station closed in 1965.	Velocity area station. Closed in 1965. Superseded in 1971 by Flat V weir d/s at 58009 Keeper's Lodge.	At high flows water overspills onto Ewenny Moor u/s and returns to river d/s of station. Monthly max rating does not fit all gaugings. Underestimates flow in early period of station.	Water level records from Jul 1960. Discharge records (Oct 1962-1965) take account of mine water.	Coal Measures in N, mixture of Millstone Grit, Carboniferous Limestone, Trias, Lias and alluvial deposits in S. Soils have permeable substrate. Lowland area with urban/industrial development and dairy/livestock farming.	Runoff influenced by mine water returns.
58004	Afan at Cwmafan	81.5	SS7910992976	279109.0	192976.0	51°37'21.2856"N 3°44'51.7968"W	51.62258	-3.74772	Afan	Cwmafan	41.1	NRW	058S0014W	58	1961-01-01		VA				true	false	false	false	false	false	false	false	false	false	false	false	false	P	1998-01-01	2023-09-30	5.344	0.26	2020-06-02	2020-06-02	73.6	2012-12-22	2012-12-22	0.923	1.967	3.13	12.4	17.2	0.43	9404	9404	100.0				42.5	171.9	311.8	492.4	600.1	2124	2095	0.4951	0.0119	0.3174	0.0887	0.0317	0.4904	0.0173	0.4045	0.0576	0.0294		1.0				0.2611	0.1375	0.53	0.435	1.0	211.2	42.04	61.4	82.5	12.8	20.31	10.91	323	270	0.18	42.5	81.63	0.216	0.76	0.0123	0.0087	0.503	0.883	0.0134	0.629	0.922			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with an informal control (sewage pipe crossing). Runoff influenced by PWS abstraction and minewater discharges.	Velocity area station with an informal control (sewage pipe crossing). Fully functional station. NRFA station name changed in 2013 from Cwmavon to Cwmafan for consistency with NRW spelling. Station closed in 1970s but reopened in 1989 at the site of the original auxiliary gauge as a level-only station - around 1.5km u/s of the main gauge location at Cwmafan (1961-1977).	Stilling well at site. Gravel bed is loose and variable, shoaling occurs. Station is d/s of road bridge that concentrates all flows. Rb is steep up to 3m. Floodplain is on lb at 1.7m. More stable station d/s at 58012 Marcroft Weir. Open channel rating. Sewer pipe catches debris, thus affecting the rating. Low flows are beyond rating lower limit. One peak flow rating applied across period of record. No gaugings found, and none available digitally.	Data from 1989 to 1997 of low quality and not currently held on the NRFA. Flow data available for Jan 1998 onwards. 29 May - 9 June 2020: estimated flows, beyond lower limit of rating. Stage values verified during sites visits.	Coal Measures, mainly superficial deposits with peat in uplands and Boulder Clay in valleys. Steep valley sides. Large areas of forest, remainder rough grazing. Some urban development, including just u/s of station. Past mining activity evident.	Runoff reduced by PWS abstraction. Minewater discharges in upper catchment affect flows.
58005	Ogmore at Brynmenyn	74.3	SS9036884425	290368.0	184425.0	51°32'52.9156"N 3°34'56.9180"W	51.54803	-3.58248	Ogmore	Brynmenyn	43.1	NRW	058005	58	1969-01-01		FVVA	365.0	147.1	14.1	true	true	true	true	false	false	false	false	true	false	false	false	false	E	1970-10-01	2023-09-30	3.854	0.159	1984-08-20	1984-08-20	74.79	1981-03-10	1981-03-10	0.552	1.45	2.427	8.635	11.76	0.49	19358	19237	99.375	1969-10-01		52.96	44.5	127.1	257.9	429.2	567.3	2008	1976	0.1916	0.0235	0.6302	0.0679	0.0631	0.1866	0.0136	0.71	0.0306	0.0593		0.8701		0.1299		0.0093	0.203	0.52	0.492	0.999	222.1	35.75	59.5	78.8	12.9	16.37	9.22	268	192	0.22	44.1	74.3	0.378	0.602	0.0248	0.0214	0.569	0.961	0.0327	0.673	0.926			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir; velocity area station for high flows. Flows influenced by effluent discharge and abstractions.	Flat V weir; velocity area station for high flows. Channel width is 13.7m.	Weir 1:20 cross slope, 1:2 u/s slope, 1:5 d/s. All flows contained. Multipe rating curves applied across period of record.	Weir refurbishment phase I Sep 2012 - Apr 2013, with data recorded at a temporary sensor over this whole period; nearby 58001 Ogmore at Bridgend used to infill missing data and correct erroneous data. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Ratings reviewed in 2022 and data reprocessed for full period of record.	Mainly Coal Measures. Predominantly grassland with livestock farming, some heathland in upland area. Forested areas throughout. Peaty soils in upper areas, seasonally wet. Urban development in the valleys.	Runoff increased by effluent discharge u/s. Flow reduced by industrial and agricultural abstraction. Abstraction also for PWS.
58006	Mellte at Pontneddfechan	65.8	SN9149108183	291491.0	208183.0	51°45'42.4175"N 3°34'25.2080"W	51.76178	-3.57367	Mellte	Pontneddfechan	86.4	NRW	058006	58	1971-01-01		FVVA	325.0	70.0	14.7	true	true	true	true	false	false	false	false	false	false	false	false	false	SP	1971-10-01	2023-09-30	3.423	0.17	1984-08-21	1984-08-22	81.44	2020-02-15	2020-02-15	0.392	0.924	1.611	7.987	11.86	0.36	18993	18984	99.953	1971-01-06		88.144	89.3	268.8	396.0	555.9	734.2	2112	1981	0.0765	0.005	0.6456	0.2394	0.0027	0.0957	0.002	0.835	0.0611	0.0031		0.4474	0.518	0.0346		0.0173	0.5065	0.62	0.322	0.975	131.7	51.3	63.5	86.4	12.5	18.2	10.58	401	194	0.28	89.3	65.32	0.41	0.912	0.0297	0.0			0.0002			1970		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir and velocity area station. PWS reservoir in catchment has partial effect on flows.	Flat V weir and velocity area station; channel width 15m.	Weir 1:20 cross slope, 1:2 slope u/s, 1:5 slope d/s. Steep section with heavy bed load. Station in steep valley and flows well contained. Flashy river so high flow gaugings are problematic. Two peak flow ratings applied across period of record. Weir refurbishment in May-June 2009 is not believed to have impacted the flood rating. Gauged up to top of wing walls.	Flows prior to Apr 1972 derived from 55009 Kentchurch (450m downstream) and should be used with caution. Flows from this period are pending review. Missing flows in early 1963 likely to have been amongst the lowest winter flows on record. In August 2012, flows reprocessed from 01/01/1987 reflecting rating changes particularly affecting low flows. Lowest flows on record in 2003 corroborated by gaugings on 26th Aug and 13th Oct. Flows from 25 Mar 2009 from 55047 Grosmont Rhosllwyn, a replacement station 200m d/s of old station. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Rural upland catchment. Geology from S to N - Millstone Grit; Carboniferous Limestone and Old Red Sandstone, with majority Boulder Clay cover in S half of catchment. Predominantly grassland/pasture with significant areas of upland heath and some forestry.	PWS reservoir in catchment has partial effect on flows.
58007	Llynfi at Coytrahen	50.2	SS8907685478	289076.0	185478.0	51°33'26.0769"N 3°36'05.1651"W	51.55724	-3.60143	Llynfi	Coytrahen	49.9	NRW	058007	58	1970-01-01		FVVA	180.0	180.0	18.2	true	true	true	true	false	false	false	false	true	true	false	false	true	EI	1970-10-01	2023-09-30	2.426	0.118	2023-07-07	2023-07-07	36.55	2012-12-22	2012-12-22	0.366	0.889	1.472	5.58	7.595	0.45	19358	19354	99.979	1970-10-01		44.52	51.9	106.4	197.2	338.7	553.9	1874	1777	0.2625	0.0314	0.5307	0.0424	0.1097	0.2163	0.0344	0.6088	0.0315	0.109		0.9511		0.0489			0.3319	0.52	0.474	0.997	158.5	36.93	55.0	73.0	12.5	17.53	8.28	212	167	0.13	51.9	51.0	0.46	0.685	0.0302	0.0374	0.653	1.147	0.0539	0.775	1.12			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir and velocity area station. Flow altered by industrial/agricultural abstraction and some effluent returns.	Flat V weir and velocity area station. Bankfull channel width 9.1m.	Weir 1:20 cross slopes; u/s 1:2; d/s 1:5. Full range. Station in steep valley where flows fairly well contained. Flashy response so obtaining high flow gaugings problematic. Two peak flow ratings applied across period of record. Upper limit at bank full with all flows contained and no major changes in cross section.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7). Ratings reviewed in 2022 and data reprocessed from 1982.	Coal Measures, some Boulder Clay and alluvium in valley. Mainly peaty soils, seasonally wet. Upland area with livestock farming, significant forest cover and urban development in valleys.	Flow altered by industrial/agricultural abstraction, some effluent returns. The last operational coal mines in this area closed in 1985. Minewater recovery is understood to have occurred by the late 1980s.
58008	Dulais at Cilfrew	43.0	SN7785000761	277850.0	200761.0	51°41'32.1740"N 3°46'07.0370"W	51.69227	-3.76862	Dulais	Cilfrew	42.1	NRW	058008	58	1971-01-01		CC	180.0	53.4	13.7	true	true	false	true	false	false	false	false	true	true	false	false	true	EH	1971-11-10	2023-09-30	2.149	0.115	1984-08-21	1984-08-21	45.29	2020-02-15	2020-02-15	0.253	0.621	1.067	5.241	7.674	0.36	18953	18824	99.319	1971-12-08		58.78	40.3	118.3	227.9	349.4	481.0	1756	1806	0.2658	0.0268	0.5374	0.0579	0.0618	0.3293	0.028	0.5065	0.0766	0.0594		0.8319		0.1681	0.0047		0.435	0.62	0.377	0.999	142.4	45.33	51.8	73.6	11.5	16.02	8.52	228	257	0.2	40.3	43.45	0.43	0.957	0.0328	0.0095	0.605	1.283	0.0181	0.707	1.145	1971		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir and Flat V weir.	Compound Crump weir and Flat V weir. Weir like-for-like refurbished in 2017. Sewage discharges and HEP scheme affect runoff.	Located d/s of single arch railway bridge of limited discharge capacity. Modular throughout range as sited on top of natural rock fall. Steep valley, flows fairly well contained. HEP off-take constructed d/s of weir creating an informal stilling basin in early 2015, effective 06/03/2015. Flashy response means it is difficult to obtain high flow gaugings. One peak flow rating applied across period of record. Validated by check gaugings up to 1.3m Formerly Flat V weir (1:10 cross slope; 1:2 u/s; 1:5 d/s; 14m wide) flanked by horizontal side section - no divide piers; velocity-area calibration for high flows.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Coal Measures with some Boulder Clay Cover. Mainly peaty soils, seasonally wet. Lower part of catchment joins steep sided Neath Valley. Upland area with livestock farming, some heathland and extensive forest cover. Some urban development in valley, and open cast coal mining.	Sewage discharges affect runoff. HEP abstraction less than 2 cumecs.
58009	Ewenny at Keepers Lodge	62.5	SS9199178217	291991.0	178217.0	51°29'33.1702"N 3°33'25.8311"W	51.49255	-3.55718	Ewenny	Keepers Lodge	8.3	NRW	058009	58	1971-01-01		FVVA	85.0	54.0	13.9	true	true	false	true	false	false	false	false	false	true	false	false	true	E	1971-11-01	2023-09-30	1.872	0.163	1976-08-23	1976-08-23	40.22	1994-12-27	1994-12-27	0.412	0.8	1.22	3.977	5.462	0.56	18962	18958	99.979	1971-11-01		30.887	8.8	24.9	69.7	192.5	301.2	1386	1324	0.1455	0.0824	0.632	0.0001	0.1341	0.0651	0.0567	0.6863	0.0218	0.1694		0.3715	0.1778	0.4507	0.0991		0.2597	0.52	0.555	1.0	75.5	29.19	43.3	58.2	11.6	14.52	7.92	85	209	0.24	8.8	63.27	0.819	0.738	0.0957	0.0373	0.656	0.726	0.0603	0.809	0.667	1971..1994	1971-11-01..1995-05-31	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging a mainly lowland catchment.	Flat V weir. Channel width 12.25m.	Weir 1:15 cross-slope terminating in a 1:2 sloping revetment. All flows contained. Velocity area calibration for high flows. Station drowning caused by not being able to regularly clear d/s channel since early 1990s. Two peak flow ratings applied across period of record, the most recent is valid from June 1995. Ratings fit respective gaugings well.	Poorer quality data (1962-1965) available for d/s station 58003 Ewenny Priory. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Coal Measures in N. Mixture of Millstone Grit, Carboniferous Limestone, Triassic and Lias sediments in S. Significant superficial deposits with Boulder Clay and alluvium. Mainly lowland area with dairy and livestock farming, some forest and urban development (including just u/s of station). On-going industrial and residential expansion in the catchment. Ford and Sony factories built in 1980s as well as housing estates.	Some groundwater and surface water abstractions within catchment (less than 10% of Q95).
58010	Hepste at Esgair Carnau	11.0	SN9695413333	296954.0	213333.0	51°48'32.7731"N 3°29'45.8602"W	51.8091	-3.49607	Hepste	Esgair Carnau	330.0	NRW	058010	58	1975-01-01		FVVA		7.6	25.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1975-09-01	2023-09-30	0.639	0.009	1975-10-13	1975-10-13	23.5	2018-10-12	2018-10-12	0.035	0.097	0.195	1.75	2.793	0.18	17562	13964	79.513				326.3	373.7	442.0	600.0	727.2	2177	2079			0.6479	0.35		0.0007		0.7355	0.2638			0.1958	0.8042			0.0555	0.3402	0.62	0.261	1.0	78.4	57.44	64.1	86.6	12.5	7.61	3.75	464	167	0.65	326.3	10.94	0.557	0.917	0.0397	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with Flat V weir. Natural flow regime.	Velocity area station with Flat V weir. Channel width 7m.	Weir 1:10 cross slope; 1:2 u/s; 1:5 d/s. Modular up to wingwall height, QMED at approx. bankfull, but lack of high flow gaugings. Low flow data believed to be of very good quality. The NRW ratings fitted gaugings well apart from on limb for non-modular flow (>0.8m). NRFA rating applied with lower limit at 0.8m, to provide rating for non-modular flow. Recommended upper limit at bankfull (1m).	Record maximum flow in Oct 2000 was extrapolated and may be an overestimate. Data between 9th Jan and 16th May 2012 estimated due to logger problem. Flows from 1 Dec 1993 to 2012 reprocessed in 2012 following rating update, with minimal change to data.	Upland catchment within the Brecon Beacons National Park. Mostly impermeable Old Red Sandstone with carboniferous outcrops at southern limits, some Boulder Clay cover in SW. Peaty soils; seasonally wet. Land use mainly upland pasture.	Natural to within 10% at Q95.
58011	Thaw at Gigman Bridge	49.2	ST0173871662	301738.0	171662.0	51°26'07.4613"N 3°24'54.0066"W	51.43541	-3.415	Thaw	Gigman Bridge	7.3	NRW	058011	58	1976-01-01		FVUS			23.6	true	false	false	false	false	false	false	false	false	true	false	false	true	GE	1976-05-01	2023-09-30	1.049	0.057	1984-07-27	1984-07-29	7.55	2012-12-22	2012-12-22	0.168	0.412	0.713	2.43	3.06	0.67	17319	17014	98.239				8.4	29.1	67.0	113.1	134.6	1215	1132	0.132	0.1308	0.6568		0.0738	0.0811	0.1119	0.759	0.0005	0.0466		0.6045	0.2975	0.0979	0.2905		0.0884	0.47	0.74	1.0	67.9	18.69	39.9	53.3	11.6	17.65	9.01	67	221	0.11	8.4	49.01	0.526	0.997	0.0731	0.0138	0.601	0.821	0.0223	0.755	0.825			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir and Ultrasonic gauging station. Flows affected by effluent discharges and GW abstractions.	Originally designed as a temporary station; Flat V Weir structure replaced non-standard bed control weir in April 1999; velocity-area calibration was based on gaugings from bridge u/s.Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Flat V weir for low and medium flows, US for high flows (>0.72m). Eel pass installed on downstream side of weir left bank in 2013. Out-of-bank flow can occur on rb. Two peak flow ratings applied across period of record. Upper limit at 1m as rating diverges from gaugings above this.	Flows from April 1999 reprocessed in August 2014 due to rating change, with effect of lowering high flows. Experienced problems with leakage under bed control in early record. Station was taken off-line in September 1998 for complete rebuild with 7-month gap in data. Reason for further 3-month gap in 2004 not known.	Lowland catchment in the Vale of Glamorgan. Mixed geology: Lias; Trias; Carboniferous Limestone and Old Red Sandstone. Significant areas of low permeability substrate. Large Drift cover, mainly glacial sands and gravels. Grass pasture with dairy and livestock farming, some patches of arable and forest; minor urban development.	Flows affected by effluent discharges and GW abstractions.
58012	Afan at Marcroft Weir	87.8	SS7712490976	277124.0	190976.0	51°36'15.0304"N 3°46'32.4446"W	51.60418	-3.77568	Afan	Marcroft Weir	17.8	NRW	058012	58	1978-01-01		CC	313.0	313.0		true	true	true	true	false	false	false	false	true	false	false	false	false		1978-01-01	2023-09-30	5.289	0.431	1984-08-20	1984-08-20	75.8	2012-12-22	2012-12-22	0.895	1.92	3.098	12.04	17.01	0.44	16709	16682	99.838	1977-10-21		95.06	18.1	143.4	298.6	487.7	600.1	2064	2036	0.4809	0.0128	0.3285	0.0816	0.0455	0.474	0.0214	0.4053	0.0564	0.0422		1.0			0.0075	0.2376	0.1456	0.53	0.452	1.0	210.2	40.17	60.0	80.4	12.7	23.56	13.15	306	266	0.17	18.1	89.7	0.3	0.612	0.0173	0.0128	0.547	0.659	0.0202	0.692	0.675	1977		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard compound Crump profile weir. Historic minewater discharge in upper catchment increased low flows.	Non-standard compound Crump profile weir. Channel width: 17.2m.	No divide walls between centre and side weirs. Stilling pipes not submerged at low flows and shoaling around pipes. High velocities due to steep gradients. One peak flow rating applied across period of record. Provides good fit to available gaugings. Weir remains modular to at least 2.5m (AMAX 1, as of June 2019).	Weir refurbishment 3 Sep 2012 - 1 Jul 2013, with loss of data during this period. Period has been infilled using data from upstream gauging station Cwmafon. Refurbishment expected to have had no significant impact on rating and gaugings since re-opening have confirmed this. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Coal Measures, mainly superficial deposits with peat in uplands and Boulder Clay in valleys. High proportion of forest, remainder rough grazing. Some urban development, including just u/s of station. Past mining activity evident, restoration schemes employed.	Historic minewater discharge in upper catchment increased low flows.
59001	Tawe at Ynystanglws	227.7	SS6855399798	268553.0	199798.0	51°40'53.4548"N 3°54'09.6729"W	51.68152	-3.90269	Tawe	Ynystanglws	9.3	NRW	059001	59	1957-01-01		VA	460.0		8.9	true	true	true	true	false	true	false	false	true	true	true	true	true	GEI	1957-10-01	2023-09-30	12.262	0.453	1959-09-18	1959-10-08	243.1	2018-10-12	2018-10-12	1.502	3.468	5.999	30.05	43.47	0.34	24106	23952	99.361	1956-10-18		257.2	11.9	107.1	260.0	509.6	801.0	1940	1890	0.1257	0.0197	0.6739	0.0977	0.0563	0.1628	0.0192	0.6797	0.08	0.0565		0.6178	0.1791	0.2031	0.0052	0.0041	0.388	0.62	0.407	0.996	143.1	42.54	58.0	81.0	12.1	39.86	21.5	287	195	0.26	11.9	227.45	0.901	0.771	0.0503	0.0167	0.566	0.56	0.0238	0.702	0.58	1956..1972	1956-10-18..1973-10-01	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Industrial and agricultural groundwater abstractions. Some effluent returns.	Velocity area station.	Gravel bed provides unstable control. Pressure transducer installed in 2005 with logger attached. Early record has bypassing above 2.75m not accounted for in rating. Several changes to bank levels have been made over the years: embankments and (lower) concrete side weir (right bank) to control flow to flood plain storage was built in 1973; the side weir was raised by ~1m to match embankment height in April 1998. During low flows (level below 0.448m), well intake pipe often out of water due to significant bed erosion. It is unclear when problem started, but results in limited low flow sensitivity; levels adjusted as necessary to be realistic though flow repetitions may occur (e.g. Aug 2006). Since Aug 2010 secondary sensor installed u/s of existing intake pipe to facilitate measurement at low water levels. Multiple peak flow ratings across period of record.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Principally Coal Measures. Mostly mixed permeability, with impermeable strata in headwaters. Some Boulder Clay cover. Mainly upland area with livestock farming. Forest and some Urban and industrial development at lower levels. 1/3 of catchment lies in Brecon Beacons National Park.	Limestone outcrop at north of catchment has partial effect on baseflow. A number of artificial influences within the catchment but overall impact on flows is expected to be less than 10% of Q95.
59002	Loughor at Tir-y-dail	46.4	SN6233012672	262330.0	212672.0	51°47'44.5351"N 3°59'51.8571"W	51.7957	-3.99774	Loughor	Tir-y-dail	30.7	NRW	059002	59	1974-01-01		VA	121.0		21.2	true	true	false	true	false	false	false	false	false	true	false	false	true	PGEI	1967-10-01	2023-09-30	2.167	0.078	1968-06-11	1968-06-20	36.2	1979-12-27	1979-12-27	0.335	0.736	1.19	5.11	7.42	0.44	20454	20432	99.892	1967-09-12		58.491	34.1	67.2	150.5	253.1	473.0	1604	1499	0.1063	0.0102	0.7503	0.0627	0.0637	0.1313	0.0598	0.7344	0.0129	0.0607		0.2554	0.2588	0.4858	0.0351		0.4898	0.58	0.466	0.998	101.7	35.48	47.3	62.7	11.5	14.05	6.49	159	169	0.09	34.1	46.9	0.638	0.698	0.0541	0.0128	0.567	0.577	0.016	0.724	0.546	1966		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with bed control (crude oblique Crump weir) built over sewer crossing. Flow affected by PWS abstraction and effluent returns.	Velocity area station with bed control (crude oblique Crump weir) built over sewer crossing.	Rb overtopped on rare occasions. One peak flow rating applied across period of record. Bankfull is thought to be somewhere between 2.0 and 2.2m. For now the upper limit is 2.2m but this will be revised by site survey.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Southern half of catchment is mainly Coal Measures; Millstone Grit, Carboniferous Limestone and Old Red Sandstone in northern half. Extensive Boulder Clay cover at lower elevations. Mainly dairy farming and some patches of forest.	PWS abstraction from main spring source. GW and industrial abstractions and effluent returns.
59004	Twrch at Gurnos	49.89	SN7725209295	277252.0	209295.0	51°46'07.7991"N 3°46'49.0092"W	51.76883	-3.78028	Twrch	Gurnos		NRW	059S0405W	59	1995-01		VA				false	true	false	true	false	false	false	false	false	false	false	false	false																				1995-01-01		73.3						2134	1991	0.0715	0.0207	0.7722	0.0756	0.0392	0.073	0.0184	0.7512	0.1179	0.0274								0.62	0.375	0.995	124.0	44.07	61.3	84.8	12.4	18.48	9.38	340	184	0.36	66.1	49.89	0.471	0.79	0.0329	0.0077	0.486	0.377	0.0119	0.63	0.346			pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a rural catchment with upland headwaters.	An open-channel velocity area station opened in 1995, located on the upstream face of the road bridge in Ystalyfera. Station added to peak flows dataset in September 2020 (WINFAP Files v9). Station re-numbered from 60017 to 59003 in February 2023 (WINFAP Files v11.1) to correct the Hydrometric Area, and to 59004 in August 2024 (WINFAP Files v13).	The site is 60m upstream of the old canal aqueduct and a large weir (~9m drop), which provides the hydraulic control. Flow is contained by the road embankments meaning there is no bypassing/out of bank flow. Low flow rating is calculated from spot gaugings, however the site is not maintained as a low flow station. One peak flow rating across the period of record calculated by hydraulic modelling. Sensitivity analysis shows the modelled rating is generally insensitive to parameter change, suggesting reasonably high confidence in the rating despite the absence of high flow gaugings.	Scatter in the gauging history means that it is not considered suitable for daily mean flow measurement.	The majority of the catchment is upland/grassland with a large part of the catchment falling within the Brecon Beacons National Park. Lower parts of the catchment are agricultural with some woodlands and commercial forestry.	The flow regime is considered natural, with only minor abstractions and discharges in the catchment.
60001	Tywi at Ty Castell	1087.8	SN4914420397	249144.0	220397.0	51°51'42.1393"N 4°11'31.8161"W	51.86171	-4.19217	Tywi	Ty Castell	7.2	NRW	060001	60	1958-01-01		VA	450.0			false	true	true	true	false	false	false	false	false	false	false	false	false	SRPGEI																			1958-01-01		399.1	9.5	73.3	220.7	415.3	832.7	1585	1535	0.2132	0.0221	0.7196	0.0253	0.0148	0.2028	0.0213	0.7387	0.0262	0.0074		0.0083	0.9917		0.0009	0.0097	0.0936	0.59	0.478	0.984	156.9	38.97	49.8	66.5	11.3	89.91	45.48	234	212	0.09	9.5	1090.84	1.321	0.767	0.0607	0.0008			0.0018			1957..1971	1957-10-01..1972-10-01	cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area high flow station - Peak flows data only on NRFA.	Velocity area high flow station - only peak flows data is on NRFA. Low flows measured d/s at 60010 (Capel Dewi). Channel width: 42m. Natural open-channel section within a straight reach of river.	Levels are monitored using a telemetered in-river PTX. Left bank contains high flows, right bank allows only extreme high flows to spill and bypass station - accounted for in ratings. Ty Castell effective above 50 cumecs. Two peak flow ratings across period of record to account for datum change in summer 1990. Rating review in 2017, corrected data for historic gauge board level slippage and reviewed ratings from 1978, review in 2018 added upper limb for out of bank flow to current rating. Bank full stage is currently 5.3m, 5.76m with earlier datum.	Only two events (October 1987 and October 2018) were significantly out of bank; the event of December 1979 was only just above bankfull. The historic flood in 1931 was of a similar magnitude to the 1987 event. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7). Current rating was updated following the October 2018 flood with the addition of an upper limb which includes out of bank flow.	Predominantly impermeable, Ordovician and Silurian with Old Red Sandstone on southern boundary. Peaty soils in headwaters, seasonally wet. Lower area soils with permeable substrata, rarely wet. Alluvium in valleys. Catchment is largely grassland with hill farming in upper catchment, some livestock and dairying at lower levels. Some forest cover, significant concentration along NE margin.	Llyn Brianne reservoir (catchment area approx 88km) in headwaters regulates flow down to major DCWW PWS abstraction d/s of station. It is also used for some winter Hydropower. The reservoir began to fill in March 1972 and it was full by December 1972.
60002	Cothi at Felin Mynachdy	297.8	SN50872249	250870.0	222490.0	51°52'51.5067"N 4°10'04.9073"W	51.88097	-4.16803	Cothi	Felin Mynachdy	16.1	NRW	060002	60	1961-01-01		VA	160.0		11.0	true	true	true	true	false	false	true	false	true	true	false	false	true	N	1961-10-01	2023-09-30	12.006	0.222	1984-07-31	1984-07-31	290.6	1987-10-18	1987-10-18	1.054	3.61	6.83	28.04	39.43	0.43	22645	22642	99.987	1961-09-01		179.15	19.5	118.1	230.0	346.9	482.3	1637	1551	0.2071	0.0168	0.7345	0.0266	0.0139	0.2316	0.0193	0.7183	0.0247	0.0055			1.0			0.0111	0.0267	0.56	0.5	0.997	173.4	37.89	51.0	68.1	11.6	52.53	28.16	231	183	0.11	19.5	298.73	0.48	0.974	0.0315	0.0002	0.0		0.0008			1960		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; straight reach and natural rock control. Natural flow regime.	Velocity area station. Straight reach and natural rock control. Channel width: 20m.	Stable section. All but very extreme flows contained. Single peak flow rating applied over period of record.	PoR max was on Oct 1987; bypassing occurred on right back so recorded flow is likely to be underestimation. Flows from 1 Jun 2007 to 31 Dec 2012 reprocessed in 2014 due to rating change, increasing GDFs below approx 5 cumecs. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Impermeable strata, mainly Silurian with Ordovician along SE boundary. Mostly grassland; upland pastures. Livestock and dairy farming below. Significant forest cover.	Natural to within 10% at Q95.
60003	Taf at Clog-y-Fran	217.3	SN2383116034	223831.0	216034.0	51°48'54.3467"N 4°33'25.8567"W	51.8151	-4.55718	Taf	Clog-y-Fran	9.3	NRW	060003	60	1965-01-01		VA	50.0		10.2	true	true	false	true	false	false	true	false	false	true	true	false	true	N	1965-10-01	2023-09-30	7.477	0.157	2023-07-09	2023-07-09	81.1	2005-11-08	2005-11-08	0.817	2.555	4.721	17.03	23.4	0.55	21184	21184	100.0	1964-07-31		77.74	8.8	41.7	122.4	210.6	393.0	1412	1420	0.0625	0.0808	0.8195	0.0157	0.0199	0.0841	0.0614	0.8366	0.0042	0.0136			1.0		0.0237		0.0837	0.46	0.553	0.999	102.7	33.96	43.3	60.4	11.5	38.65	18.13	125	178	0.09	8.8	216.44	0.669	0.74	0.0505	0.0017			0.004			1976		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Natural flow regime. Station used for flood forecasting and drought trigger.	Velocity area station. Channel width: 13.9m. Site used for flood forecasting and drought trigger.	Lb steep with berm for recorder - recent signs of erosion. Right flood bank at approx 3.2 - 3.4m; considerable overspill during flood events. Channel prone to build-up of silt. Gauged from bridge u/s which can also become constriction at high flows. Flood rating change in early 1990s; exact date of change is estimated. Rating fits gaugings reasonably and allowance is made for bypass flow.	Flow record from 60002 Cothi at Felin Mynachdy used to infill various short periods of missing data (principally in 1986, but also 1991, 2001, 2004). Flows since 1 Jan 2010 reprocessed in 2013 due to new rating, with main effect of lowering low flow GDFs. Remedial works to stabilise the riverbank downstream of the gauging station and the bank to the rear of the gauging station began in July 2022 and finished September 2022. During this time a temporary site, was positioned in the river channel using a stilling pipe approx. 30m upstream of the station. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Mainly impermeable strata, Ordovician with some narrow bands of igneous rock, Old Red Sandstone in S. Alluvium in valleys. Soils have permeable substrate. Largely grassland, mainly dairy farming. Very small patches of arable and woodland.	Natural to within 10% at Q95.
60004	Dewi Fawr at Glasfryn Ford	36.67	SN2898217489	228982.0	217489.0	51°49'47.1594"N 4°28'59.6997"W	51.82977	-4.48325	Dewi Fawr	Glasfryn Ford	10.2	NRW	060004	60	1969-01-01		VA	20.0		34.9	true	false	false	false	false	false	false	false	false	false	false	false	false	E	1969-05-01	2023-09-30	1.299	0.007	1995-08-21	1995-08-21	15.97	1981-10-01	1981-10-01	0.127	0.423	0.796	3.064	4.17	0.53	19876	17510	88.096				11.4	52.6	149.3	224.4	287.8	1501	1476	0.0743	0.0673	0.8055	0.0337	0.018	0.0736	0.05	0.8666	0.0034	0.0063			1.0				0.0484	0.52	0.569	1.0	123.3	33.29	47.4	64.0	12.2	19.49	9.71	145	190	0.24	11.4	36.8	0.481	0.751	0.032	0.0001			0.0009					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, constructed in opening of railway embankments where railway bridge crosses river. Ford 10m d/s. Runoff affected by effluent returns.	Velocity area station, constructed in opening of railway embankments where railway bridge crosses river. Channel width 7m. Ford 10m d/s. Discontinued at end of 1983, reinstated in Apr 1990. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Concrete ford d/s acts as a stable bed control - in good condition. Bridge contains all flows. Some minor shoaling u/s. At approx 2m water spreads out along road either side of ford resulting in some backing up. Access prevented for measurements above 2.3m when footbridge is submerged. Single peak flow rating applied to whole record. Recommended rating upper limit is level of highest gauging (1.8m).	Flows since 13 Jan 2006 reprocessed in 2013 due to new rating, with main effect of reducing high flow HIFs. No POTs measured above 2m due to water spreading out across road at flows >2m.	Impermeable Ordovician strata. Rural catchment, mostly grassland (mainly dairy farming), minor patches of woodland.	Runoff increased by effluent returns.
60005	Bran at Llandovery	66.8	SN7712934341	277129.0	234341.0	51°59'37.9751"N 3°47'27.5554"W	51.99388	-3.79099	Bran	Llandovery	64.6	NRW	060005	60	1971-01-01		FVUS	65.0		29.4	true	false	false	false	false	false	false	false	false	false	false	false	false	I	1968-10-01	2023-09-30	2.334	0.001	1995-09-02	1995-09-06	44.61	1987-10-18	1987-10-18	0.137	0.608	1.221	5.674	8.038	0.4	20088	20020	99.661				67.1	113.7	234.9	437.3	516.3	1512	1489	0.3617	0.0327	0.5459	0.0303	0.0156	0.3904	0.0148	0.5694	0.0191	0.0062			1.0				0.0518	0.63	0.485	0.997	185.1	39.32	48.9	64.0	10.8	19.78	11.18	252	208	0.23	67.1	63.7	0.578	0.549	0.0492	0.0003			0.0009					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir for low flows, Ultrasonic installed in Dec 1995. Agricultural abstractions have a minor impact on flow records.	Flat V weir for low flows, Ultrasonic installed in Dec 1995. Replaced velocity-area station with records from 1968, bed control installed 1972. Channel width: 7.5m. Station removed from peak flows dataset in August 2024 (WINFAP Files v13).	Flood Alleviation Scheme upstream of Llandovery stops any bypass flow. High flows may be affected by confluence with River Gwydderig 100m downstream, causing some non-modular flow. Ultrasonic prone to dropping out during high flows. Variable back water causes a problem.	Low flows in Aug - Sep 1995 are suspect due to work on weir prior to installation of ultrasonics. Low flows in Jul - Aug 2006 are suspect due to period of turbulent levels.	Impermeable Ordovician substrate, with alluvium on valley floor. Peaty soils, seasonally wet, in hill area. Soils have permeable substrate in lower areas. Mainly grassland, with hill farming in uplands, dairy in valleys. Significant forest cover throughout.	Agricultural abstractions have a minor impact on flow records. Levels can be affected by the River Gwydderig, situated d/s, due to back-up of water.
60006	Gwili at Glangwili	129.5	SN4303621947	243036.0	221947.0	51°52'26.2000"N 4°16'53.4121"W	51.87394	-4.2815	Gwili	Glangwili	7.5	NRW	060006	60	1972-01-01		VA	370.0		11.8	true	true	true	true	false	false	false	false	true	true	false	false	true	PEIN	1968-10-01	2023-09-30	5.309	0.148	1976-08-28	1976-08-28	95.43	1981-03-21	1981-03-21	0.529	1.75	3.146	12.53	16.91	0.49	20088	20088	100.0	1968-05-02		83.08	9.5	101.0	187.5	277.6	354.4	1614	1603	0.188	0.0437	0.738	0.0078	0.0222	0.2096	0.0254	0.7462	0.0097	0.009			1.0				0.0123	0.52	0.536	0.999	150.0	35.11	51.9	70.2	12.3	26.81	15.85	188	195	0.14	10.1	131.14	0.448	0.835	0.0296	0.0009			0.0043			1967		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Natural flow regime.	Velocity area station. Channel width: 15.5m.	Right hand bankfull is 3.5m, left hand bankfull is 3.0m. Station is 750m u/s of tidal limit and confluence with the Tywi - no backwater effects suspected. Stable section except period 1973-85 where section affected by land drainage scheme. All flows (so far) contained within banks. Cableway at site. Several peak flow ratings applied across period of record, the most recent is supported by gaugings to almost AMAX1 level.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Impermeable Ordovician and Silurian strata. Soils generally have permeable substrate. Rural catchment, mostly grassland supporting dairy farming, but with extensive forest cover.	A number of artificial influences within the catchment but overall impact on flows is expected to be less than 10% of Q95.
60007	Tywi at Dolau Hirion	231.8	SN7618736244	276187.0	236244.0	52°00'38.7841"N 3°48'19.3982"W	52.01077	-3.80539	Tywi	Dolau Hirion	68.9	NRW	060007	60	1968-10-01		VA	670.0		9.5	true	true	false	true	false	false	false	false	false	false	false	false	false	SREI	1968-10-01	2023-09-30	10.215	0.401	1971-07-20	1971-09-25	252.1	1979-12-27	1979-12-27	2.401	3.811	5.748	22.47	31.69	0.47	20088	20047	99.796	1968-04-25		151.454	68.5	153.4	385.6	472.7	544.5	1741	1685	0.3555	0.0075	0.5863	0.0284	0.012	0.2896	0.0053	0.6115	0.0799	0.0037			1.0			0.0326	0.0198	0.64	0.431	0.933	185.5	43.85	51.1	68.0	11.2	39.11	21.25	351	167	0.11	68.5	220.28	0.55	0.85	0.0302	0.0001			0.0002			1967..1978	1967-10-01..1972-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Stable section with natural control. Regulated by Llyn Brianne Reservoir.	Velocity area station. Stable section with natural control and fairly steep and high banks; lb is 3.8m, rb is 4.5m. Channel width: 38m.	One peak flow rating applied across period of record. Good fit to gauging. River regulated - Llyn Brianne Reservoir in upper catchment. Reservoir is used to augment low flows for PWS abstractions downstream, also for HEP generation in winter.	Flows since 1969 reprocessed in 2010 due to rating change, leading to increase in low flows and decrease in high flows, most significant since 1988. Flows since 31 Jan 2008 reprocessed in 2013 due to rating change, with main affect lowering of low flow GDFs and HIFs. Flows since 01 Nov 1982 reprocessed in 2022 due to rating review. AMAX from 1967 to 1971 water years are excluded from QMED calculation; they are from before Llyn Brianne reservoir first filled - began to fill in March 1972 and full by December 1972. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7). WY1978/1979 rejected because the timing is suspect and doesn't correspond to nearby gauges.	Upland area of Cambrian Hills. Principally impermeable Ordovician strata. Mainly peaty soils, seasonally wet. Grassland (mostly hill farming with some livestock at lower levels); extensive forest cover, very dense in NE.	Regulated by Llyn Brianne Reservoir.
60008	Tywi at Ystradffin	89.8	SN7855947241	278559.0	247241.0	52°06'36.4325"N 3°46'29.1361"W	52.11012	-3.77476	Tywi	Ystradffin	174.7	NRW	060008	60	1972-01-01		C				true	false	false	false	false	false	false	false	false	false	false	false	false	SR	1983-06-02	2023-09-30	4.26	0.367	1990-11-15	1990-11-15	67.17	1987-10-18	1987-10-18	0.939	2.41	2.828	8.41	12.4	0.59	14731	14242	96.68				169.5	329.5	434.5	496.4	544.5	1884	1809	0.5332	0.0051	0.4156	0.0125	0.0102	0.4043	0.0001	0.4545	0.1155	0.0022			1.0			0.021		0.65	0.383	0.847	166.0	47.97	52.1	70.3	11.3	22.1	12.06	422	181	0.1	169.5	89.28	0.373	1.14	0.0242	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir. Station used principally to monitor compensation and regulated flows from Llyn Brianne Reservoir.	Crump weir. Site owned by Welsh Water. Station used principally to monitor compensation and regulated flows from Llyn Brianne Reservoir.	Single crest crump weir.	Missing date on the 3th of November 2018 due to instrument failure with no backup available on site. Data temporarily not presented after June 2021 due to new HEP scheme offtake which is upstream of the gauging station.	Impermeable Ordivician and Silurian formations. Land use split between forest and rough grazing.	Artificial flow regime due to reservoir.
60009	Sawdde at Felin-y-cwm	77.5	SN7121226573	271212.0	226573.0	51°55'21.8550"N 3°52'27.1332"W	51.92274	-3.8742	Sawdde	Felin-y-cwm	55.3	NRW	060009	60	1970-01-01		FV	760.0		15.4	true	true	false	true	false	false	false	false	true	false	false	false	false	SP	1970-12-07	2023-09-30	3.308	0.098	1988-09-14	1988-09-14	102.6	1979-12-27	1979-12-27	0.399	1.01	1.765	7.693	11.3	0.4	19291	19120	99.114	1970-08-01		111.4	58.6	158.4	272.8	519.6	832.7	1772	1794	0.0724	0.0072	0.866	0.0418	0.0084	0.0908	0.0153	0.883	0.0058	0.0036		0.0777	0.9223			0.0018	0.0914	0.62	0.448	0.995	167.8	39.84	56.6	78.6	12.3	16.42	8.77	309	321	0.31	58.8	78.86	0.229	0.856	0.0165	0.0			0.0006					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V Crump profile weir. Reservoir in upper catchment affects runoff.	Flat V Crump profile weir. Channel width: 13.7m. Weir built in 1970, replaced in Jun 2008-Sep 2009.	Weir cross slope 1:20; downstream slope 1:5; upstream slope 1:2. Slope of upstream reach is 1:100 and downstream reach is 1:250. During floods, bedload can be boulder range, up to 0.3m diameter. Two peak flow ratings applied across period of record. Wing wall height increased from 1.4m to 1.97m when weir rebuilt in 2008-09.	No data Dec 1982 - Oct 1990 due to station closure. Low flows in July - Aug 2006 are suspect as intake pipe was not completely submerged. Ratings reviewed in 2022 and data reprocessed from 2009. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly impermeable; Old Red Sandstone at source, Silurian in middle section, Ordovician in lower reaches. Valley extensively covered with alluvium. Predominantly grassland, some forest at lower elevations. Mostly within Brecon Beacons National Park.	Reservoir in upper catchment affects runoff. Some abstraction for public water supply.
60010	Tywi at Capel Dewi	1090.4	SN4850920576	248509.0	220576.0	51°51'47.3090"N 4°12'05.2702"W	51.86314	-4.20146	Tywi	Capel Dewi	7.8	NRW	060010	60	1959-01-01		FVVA	221.0		6.2	true	false	false	false	false	true	false	false	true	true	true	true	true	RP	1958-10-01	2023-09-30	40.372	1.061	1989-08-06	1989-08-06	859.4	2018-10-13	2018-10-13	4.191	12.8	24.06	95.51	132.8	0.45	23741	23729	99.949				8.2	72.7	220.3	415.2	832.7	1585	1534	0.2129	0.0222	0.7197	0.0253	0.0149	0.2026	0.0213	0.7388	0.0262	0.0074		0.0083	0.9917		0.0011	0.0097	0.0943	0.59	0.478	0.984	156.7	38.96	49.8	66.5	11.3	90.67	46.17	234	212	0.09	9.6	1092.41	1.331	0.766	0.061	0.0008			0.0018					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir set in Crump profile flanking section. Llyn Brianne in headwaters regulates flow.	Flat V weir set in Crump profile flanking section. Channel width: 43m. NRFA station name changed in 2013 from Nantgaredig to Capel Dewi for consistency with MA nomenclature, though station may still be referred to as Nantgaredig on occasion. High flows measured u/s at 60001 Ty Castell.	Weir 1:20 cross slope; 1:2 u/s; 1:5 d/s. Station effective below 221 cumecs. Lb contains high flows, rb allows flows to spill and bypass station. Shoaling d/s influences modular range; calibration based on gaugings.	High flows measured u/s at 60001 Ty Castell, from which all pre-74 flows derive.	Predominantly impermeable, Ordovician and Silurian with Old Red Sandstone on southern boundary. Peaty soils in headwaters. Alluvium in valleys. Catchment is mainly grassland with hill farming in upper catchment, some livestock and dairying at lower levels. Extensive forest cover, significant concentration along NE margin.	Llyn Brianne in headwaters regulates flow down to major DCWW PWS abstraction u/s of station (but d/s of 60001 - see flow record) and may be detected in hydrograph.
60012	Twrch at Ddol Las	20.7	SN6502343991	265023.0	243991.0	52°04'40.0004"N 3°58'15.6413"W	52.07778	-3.97101	Twrch	Ddol Las	151.2	NRW	060012	60	1970-01-01		VA	36.0		32.2	true	true	false	true	false	false	true	false	false	false	false	false	false	N	1970-09-10	2023-09-30	0.733	0.0	1999-07-27	1999-08-02	18.45	2018-10-12	2018-10-12	0.037	0.185	0.387	1.805	2.573	0.34	19379	16164	83.41	1970-09-10		15.27	152.4	202.4	309.4	419.3	482.3	1682	1531	0.0934	0.0026	0.8557	0.0318	0.0164	0.0735	0.0207	0.8866	0.0141	0.0052			1.0			0.0367		0.65	0.419	1.0	161.2	43.02	49.4	66.2	11.2	12.59	6.39	305	192	0.21	152.9	19.5	0.419	0.813	0.0323	0.0			0.0024			1981		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Natural flow regime.	Velocity area station. Channel width 4.65m. Station closed Dec 1982 and re-opened Oct 1990.	Gravel bed. Out of bank flow onto field on right bank, bypassing gauge. Two peak flow ratings applied across period of record, the most recent is valid from the reopening in October 1990. Many gaugings, though few high flow gaugings, and none above bank full.	No data Jan 1982 - Oct 1990 due to station closure. Low flows in July - Aug 2006 are suspect as intake pipe was not completely submerged. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Upland catchment, entirely rural in southern Cambrian Mountains. Impermeable formations; lower Silurian shales, grits and mudstones with no drift cover except for peat at highest altitudes in far north of catchment. Catchment is mostly grassland, with some patches of woodland.	Natural to within 10% at Q95.
60013	Cothi at Pont Ynys Brechfa	261.6	SN5371730111	253717.0	230111.0	51°57'00.7217"N 4°07'47.7757"W	51.9502	-4.12994	Cothi	Pont Ynys Brechfa	54.5	NRW		60	1971-01-01	1976-12-31	VA	83.0		15.5	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1971-08-01	1976-01-31	8.361	0.265	1975-06-26	1975-08-28	93.31	1974-01-30	1974-01-30	0.722	2.808	5.315	19.56	27.45	0.44	1645	1645	100.0	1971-07-27	1981-07-01	122.902	54.2	133.0	238.8	356.1	482.3	1635	1538	0.1992	0.0138	0.7435	0.0285	0.0141	0.2095	0.0181	0.7384	0.0277	0.0057			1.0			0.0136	0.0233	0.57	0.493	0.997	169.1	38.53	50.7	67.5	11.5	41.59	21.21	242	197	0.1	54.2	243.0	0.478	0.934	0.0336	0.0002			0.0009					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	River section with gravel bed. Station was a subsidiary to 60002 Felin Mynachdy. Natural flow regime. Station now closed.	River section with gravel bed. Station was a subsidiary to 60002 Felin Mynachdy. Station closed in 1981 after damage from Dec 1979 flood when station floor level was exceeded.	Shoaling occurs downstream near bridge. Steep sides above bankfull, station on right bank. One peak flow rating applied across period of record. Recommended rating upper limit at level of highest gauging (3.0m).	NRFA only holds 1971 - 1976 GDF data but peak flow data available up to 1981. Event on 27/12/1979 estimated using wrack marks since level exceeded station floor and rating upper limit, but flow consistent with peak at 60002 d/s.	Mainly impermeable Silurian with Ordovician along south-eastern boundary. Predominantly grassland, hill farming in upper areas, dairy farming in lower areas with extensive patches of woodland.	Natural to within 10% at Q95.
60016	Tywi at Manorafon	580.37	SN6574023994	265740.0	223994.0	51°53'53.7721"N 3°57'09.7957"W	51.89827	-3.95272	Tywi	Manorafon		NRW	060016	60	1968-01		VA				true	true	false	true	false	false	false	false	false	false	false	false	false	SRP	1990-06-01	2023-09-30	23.354	3.131	2018-06-27	2018-06-27	384.8	2021-01-20	2021-01-20	4.578	7.699	13.43	53.9	73.7	0.49	12175	12175	100.0	1968-01-01		257.918	27.1	95.2	270.0	451.4	832.7	1596	1564	0.25	0.0184	0.6806	0.0291	0.0138	0.2218	0.0149	0.7172	0.0348	0.0065		0.0105	0.9895			0.0126	0.0672	0.63	0.468	0.973	166.6	40.16	50.2	67.2	11.2	60.16	29.78	273	232	0.08	29.4	580.87	0.891	0.671	0.0552	0.0007			0.0016			1967..1996	1967-10-01..1997-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rated section. Llyn Brianne in headwaters regulates flow.	Rated section. Channel width: 34.25m. Station added to peak flows dataset in September 2022 (WINFAP Files v11).	Very low sheet pile submerged wall and cableway. Relatively straight river channel susceptible to moving bed of stone and gravel. Irregular boulder weir, of higher level than the station's sheet pile wall, constructed on 28/09/1995 in the river channel approx 180m d/s of gauging station. Station is bypassed at flows just above current QMED (212 m3/s). Peak level of 3.81m on 23/10/1998; however, rating not valid above 3.5m, so corresponding peak flow is questionable.	Flows 2-5 Sep 1995 suspect, coinciding with construction downstream of informal boulder weir and corresponding new rating for station. Flows 28 Nov 1997-25 Mar 1998 also suspect as response looks anomalous. Peak flows between 1967 and 1997 are rejected due to uncertainty of the rating.	Predominantly impermeable geology, Ordovician and Silurian with Old Red Sandstone on southern boundary. Peaty soils in headwaters. Alluvium in valleys. Catchment is predominantly grassland with hill farming in upper catchment, some livestock and dairying at lower levels. Remainder of catchment is forested, with a significant concentration along NE margin.	Llyn Brianne in headwaters regulates flow down to major Dwr Cymru Welsh Water abstraction immediately d/s of station.
61001	Western Cleddau at Prendergast Mill	197.6	SM9540217700	195402.0	217700.0	51°49'13.3306"N 4°58'12.1627"W	51.82037	-4.97005	Western Cleddau	Prendergast Mill	3.5	NRW	061001	61	1965-01-01		VA	60.0		5.2	true	true	false	false	true	false	false	false	false	false	true	false	false	PEI	1965-10-01	2004-12-31	5.434	0.304	1976-09-09	1976-09-09	65.6	1987-10-18	1987-10-18	0.753	2.02	3.72	12.2	15.9	0.63	14337	14328	99.937	1961-07-28		71.878	4.8	48.3	98.9	186.5	372.6	1282	1276	0.05	0.1316	0.7755	0.0099	0.0302	0.0754	0.106	0.7977	0.009	0.0115		0.0055	0.9933	0.0012	0.0381	0.003	0.081	0.44	0.56	0.996	67.9	32.56	42.5	57.7	11.6	30.57	16.45	108	203	0.1	4.8	197.82	0.557	0.947	0.0444	0.0012			0.0043			1960..1970	1961-07-28..1971-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Generally natural flow regime - affected by tides and backwater issues.	Velocity area station. Channel width: 10.5m.	Left bank is steep and high, right bank has low flood bank that allows overtopping to an extensive floodplain. Natural heavy shoaling causing frequent rating changes. Current rating overestimates flows - rating review pending. One peak rating applied across period of record - significant scatter in gaugings with too low a gauging frequency to be able to determine temporal changes or to improve rating history.	Tidally affected but this is edited out. Flow data was merged with 61004 Redhill to produce a continuous record, held as 61001 (Jan 74 - May 90 data is from 61004). Appears to be a trend in the early peak flow record. Reason unknown, though has been suggested related to land drainage schemes upstream in late 1960's & early 1970's. Peak flow data before Oct 1971 excluded suspect data. High flows known to spill onto extensive floodplain so underestimation likely e.g. 18/12/1992, 12/06/1993, 18/11/1997, 08/12/2000. Daily flows are held until 2004, with confidence in peak flows maintained until 2014.	Mostly lowland catchment. Impermeable, Ordovician formations with igneous intrusions. Soils in southern area have permeable substrates. Predominantly grassland with dairy farming, patchy arable in lower areas.	Generally natural flow regime, some effects of abstractions and effluent returns. Also affected by tides and backwater issues.
61002	Eastern Cleddau at Canaston Bridge	183.1	SN0722615292	207226.0	215292.0	51°48'10.6229"N 4°47'50.5343"W	51.80295	-4.79737	Eastern Cleddau	Canaston Bridge	4.9	NRW	061002	61	1960-01-01		VA	85.0		14.7	true	true	false	true	false	false	false	false	true	true	false	false	true	SRPE	1960-10-01	2023-09-30	6.149	0.586	1970-07-22	1970-07-22	108.0	1964-12-12	1964-12-12	1.12	2.289	3.87	13.6	18.7	0.55	23010	22980	99.87	1959-11-30		80.86	5.1	50.1	136.2	282.7	535.5	1446	1437	0.0787	0.1007	0.7744	0.0127	0.0273	0.0977	0.057	0.8193	0.014	0.0071			1.0		0.0361	0.0059	0.1514	0.44	0.537	0.967	96.0	35.35	43.8	59.9	11.5	27.9	15.46	152	185	0.23	5.1	181.87	0.549	0.83	0.0413	0.0008			0.0035					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Large regulating reservoir affects flows.	Velocity area station; artificial control installed in 1974 in the form of a DCWW water pipe. Channel width: 17.4m.	Left bank steep and high. Right bank low flood bank on edge of pastoral floodplain. Flow with stage greater than 2.6m spills onto right bank. Pipe weir is known to freeze and elevate levels in winter, not corrected for. Two peak flow ratings applied across period of record. Upper limit set to bank full. Rating fits well to all available gaugings.	1986 POR max triggered by 80-100mm storm but considerable uncertainty in the magnitude of the peak flow (significant rating extrapolation). Atypical recession throughout May - July 1984. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Mainly lowland with hills to N. Impermeable formations, mainly Ordovician with bands of igneous rock in N. Some Old Red Sandstone on southern boundary. Mainly grassland for dairy farming with some forest and patches of arable in low-lying areas to W.	Regulating reservoir for Public Water Supply on one of the major tributaries of the Eastern Cleddau. This was constructed and filled in the early 1970s.
61003	Gwaun at Cilrhedyn Bridge	31.3	SN0050134913	200501.0	234913.0	51°58'36.3890"N 4°54'22.0630"W	51.97677	-4.90613	Gwaun	Cilrhedyn Bridge	70.3	NRW	061003	61	1969-04-01		VA	25.0		18.5	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1969-03-01	2023-09-30	1.135	0.057	1976-08-27	1976-08-27	17.4	2005-10-11	2005-10-11	0.174	0.455	0.766	2.44	3.318	0.58	19937	19643	98.525				71.2	140.5	230.7	322.0	466.6	1474	1565	0.1013	0.0419	0.821	0.0146	0.0208	0.0806	0.0306	0.8741	0.0118	0.0029			1.0				0.0679	0.44	0.494	1.0	121.3	38.98	51.2	67.2	12.1	10.97	5.51	233	306	0.19	71.2	28.77	0.267	0.791	0.0238	0.0			0.0001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in straight reach. Natural flow regime. Station used for flood forecasting.	Velocity area station in straight reach, width: 7.0m. Station used for flood forecasting. Station removed from peak flows dataset in August 2024 (WINFAP Files v13) pending rating review.	Road bridge upstream concentrates flow. Recorder sited on flood bank on right. Secondary in-river sensor installed due to intake pipe being exposed during low flows. Small low-lying area on left bank at 2.5m. Downstream bend in channel which can skew flow at high flows. Flashy catchment, lack of high flow gaugings. Two peak flow ratings across period of record but significant scatter in gaugings, particularly at high flows.	Uncertainty in peak data, should be treated with caution. Flows since 1982 reprocessed in 2010 leading to decrease in both low and high flows. Flows since 11 October 1995 reprocessed in 2011 leading to significant increase in high flows (which had been truncated under previous rating).	Small catchment within Pembrokeshire Coast National Park. Impermeable Ordovician formations with intrusions of igneous rock. Mainly grassland, dairy farming in lower areas and livestock on hills. Small patches of woodland and arable.	Steep-sided catchment - very responsive. Natural to within 10% at Q95.
61005	Western Cleddau at Treffgarne		SM9588424275	195884.0	224275.0	51°52'46.4952"N 4°58'01.0012"W	51.87958	-4.96694	Western Cleddau	Treffgarne		NRW	061005	61	2013-10-23		VA				true	false	false	false	false	false	false	false	false	false	false	false	false	N	2013-10-25	2023-09-30	3.899	0.293	2022-08-31	2022-09-01	49.73	2018-11-09	2018-11-09	0.594	1.33	2.477	8.739	11.68	0.63	3628	3628	100.0									1306	1304																		0.44	0.556	0.996	72.2	32.72	43.9	59.6	11.6	21.2	11.54	126	250	0.08	25.5	126.36	0.51	0.963	0.0452	0.0013			0.0038					gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Informal Blockstone control, built to replace Prendergast Mill (61001).	Treffgarne is constructed on the site of a fishing hut in Treffgarne Gorge. The record begins on 25/10/2013. The control structure at the site consists of an informal blockstone weir which provides adequate levels of sensitivity at low flows whilst maintaining a relatively stable section. The site is less suitable flow high flow monitoring due to highlyvegetated banks. When flow is out-of-bank (~1.2m), this has a large effect on velocities and prevents on-site gaugings. Flows above 23 cumecs should beused with caution.	Informal blockstone weir with a block missing from the centre. Made wingwalls on the right bank to approx 1.185m and a vegetated left bank with no overhang into the river.		The geology of the catchment is primarily low permeability Cambrian and Ordovician (sandstones, siltstones and shales) with igneous intrusions.	Generally natural flow regime, some effects of abstractions and effluent returns.
62001	Teifi at Glanteifi	893.6	SN2441941655	224419.0	241655.0	52°02'43.4595"N 4°33'42.2657"W	52.04541	-4.56174	Teifi	Glanteifi	5.2	NRW	062001	62	1959-01-01		VA	210.0		9.4	true	true	true	true	false	true	true	false	true	true	true	true	true	SP	1959-07-01	2023-09-30	29.201	0.731	1976-08-25	1976-08-29	596.4	2018-10-13	2018-10-13	3.1	9.741	18.2	67.31	90.21	0.53	23468	23468	100.0	1959-06-05		213.0	3.6	107.9	196.0	335.1	591.9	1363	1379	0.12	0.0474	0.7883	0.018	0.0238	0.1018	0.0432	0.8235	0.0182	0.0121			1.0		0.0245	0.0167	0.0405	0.52	0.507	0.995	109.8	36.97	44.8	59.8	11.0	109.09	49.98	209	285	0.1	7.4	897.59	0.758	1.167	0.0486	0.0017			0.0047					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; straight reach. PWS has minor effect on flow regime, thought to be mostly natural. Drought trigger site for DCWW.	Velocity area station. Straight reach, width: 35m. Natural control. Drought trigger site for DCWW.	Flood flows (> ~3.7m) spill over right bank onto wide floodplain. Cableway at site. Some weed growth in channel. Well gauged - the three 2002 gaugings taken at 4.3-4.4m include floodplain flows. Multiple peak flow ratings applied across period of record, converging above QMED with allowance for flood plain flow.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9). Event on 14/10/2018 had ~2m of water flowing on wide flood plain at peak, out of bank rating calculated using floodplain gaugings taken in 2002 and Manning's calculations.	Mainly impermeable Ordovician and Silurian deposits. Mainly grassland, dairy farming predominates in south; hill farming in upper catchment. Some forest, mainly on E margin. Peaty soils on hills, seasonally wet. Apart from Tregaron bog, most of the lower areas have soils with permeable substrate.	PWS impounding reservoirs in upland and minor agricultural abstractions; Cors Caron/Tregaron Bog (10 sq.km.) has partial effect on flows. Nonetheless, a sensibly natural regime.
62002	Teifi at Llanfair	510.0	SN4333540655	243335.0	240655.0	52°02'31.5391"N 4°17'08.5198"W	52.04209	-4.2857	Teifi	Llanfair	66.0	NRW	062002	62	1970-01-01		VA	140.0		10.0	true	true	false	true	false	false	false	false	false	false	false	false	false		1971-01-01	2023-09-30	16.552	0.474	1976-08-27	1976-08-27	301.1	2018-10-13	2018-10-13	1.808	5.465	9.85	40.05	54.46	0.48	19266	12152	63.075	1970-12-01		138.8	65.6	140.4	223.1	396.2	591.9	1417	1392	0.1243	0.0264	0.8	0.025	0.0214	0.0983	0.0281	0.8346	0.0264	0.0107			1.0		0.0425	0.0289	0.0251	0.54	0.484	0.993	106.1	38.97	43.3	59.3	10.7	76.24	38.65	243	272	0.09	65.6	517.58	0.846	1.042	0.0619	0.0014			0.0037			1970..2001		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Natural river section in straight reach of river.	Natural river section in straight reach of river. Channel width is approx 22.6m. Station closed 01/11/82 and re-opened 12/4/2002.	Cableway was removed in mid-2000s. Bed material is alluvium deposits - mix of boulders and grit. Steep lb, rb more gentle with small flood plain. Low flow performance is believed to be very good. One peak flow rating applied across period of record. Well gauged to bank full, but not above. Surface velocity measurement and cross section area have been used to calculate flood plain flow at QMED, it is about 2% of rated flow.	Flows since April 2002 reprocessed with new rating in 2010. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Mainly impermeable Ordovician and Silurian geology. Peaty, seasonally wet soils in upland areas. Apart from Tregaron bog, most of the lower areas have soils with permeable substrata. Predominantly grassland. Hill farming in uplands, dairy farming in southern area.	Public water supply impounding reservoirs in uplands and minor agricultural abstractions have minimal effect on flow regime. Cors Caron/Tregaron Bog (10 sq.km.) has partial effect on flows.
62003	Teifi at Pont Llanio	175.38	SN65235689	265230.0	256890.0	52°11'37.4206"N 3°58'23.1942"W	52.19373	-3.97311	Teifi	Pont Llanio	289.0	NRW	062S0577W	62	1998-07-01		VA				false	true	false	true	false	false	false	false	false	false	false	false	false																				1998-07-01		40.6						1499	1448																		0.65	0.441	0.983	110.3	43.2	43.4	58.9	10.4	31.37	18.11	289	270	0.13	144.1	175.38	0.87	0.879	0.0748	0.0008			0.0022					pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station located in the upper Teifi catchment, downstream of Cors Caron/Tregaron Bog which provides significant flow attenuation. Therefore gauged flows are only representative of the flow regime on the Teifi, downstream of Cors Caron.	Velocity area station in a rural catchment. 3 arched bridge downstream - flow is typically through 2 arches with the 3rd permitting out of bank flow. Station opened on 1st July 1998. Station added to peak flows dataset in August 2021 (WINFAP Files v10).	Rating derived from gaugings which are taken immediately downstream of the bridge due to the accessibility (can gauge off the bridge). During higher flows, this is one of the only areas where the flow remains relatively contained, rather than spreading out across the extensive flood plain. At 2.2m there is standing water on the narrow flood plain opposite the station, with some flow occurring above that level. This is not accounted for in the rating. Extent and velocity of floodplain flow have been estimated from site observation and were used with topographic data to calculate flood plain flow at QMED of around 5% of rated flow.		Mainly impermeable Ordovician and Silurian geology. Peaty, seasonally wet soils in upland areas. Apart from Tregaron bog, most of the lower areas have soils with permeable substrata. Predominantly grassland.	Mostly natural flow regime with significant attenuation of main river flows due to Cors Caron/Tregaron Bog. This usually results in double (or multi) peaked flood events at this station as flows from tributaries - the largest of which is the Brennig - peak first, followed later by the attenuated main river flow (which is often the higher peak).
63001	Ystwyth at Pont Llolwyn	169.6	SN5902477289	259024.0	277289.0	52°22'31.6121"N 4°04'20.5629"W	52.37545	-4.07238	Ystwyth	Pont Llolwyn	12.0	NRW	063001	63	1963-01-01		VA	71.0		13.8	true	true	true	true	false	false	false	false	true	true	false	false	true	N	1963-10-01	2023-09-30	6.14	0.107	1994-08-17	1994-08-17	132.5	1964-12-12	1964-12-12	0.594	1.93	3.383	14.6	20.97	0.39	21915	21883	99.854	1961-06-29		94.514	14.6	88.9	250.0	492.3	611.6	1509	1456	0.1862	0.0161	0.7332	0.036	0.0251	0.1822	0.0251	0.695	0.0883	0.0077			1.0				0.1542	0.63	0.489	0.99	159.8	39.17	45.6	60.6	10.5	41.11	19.16	265	278	0.12	19.0	170.1	0.705	0.758	0.0471	0.0006			0.0012					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; non-standard oak weir shallow V bed control. Natural flow regime.	Velocity area station; non-standard oak weir shallow V bed control, installed in 1973. Channel width: 16m.	Stable section. Recorder on steep left bank. Floods spill over right bank onto floodplain (approx. 30m wide) and bypass station. Intake pipe has issues with blockages - lower intake pipe buried in left bank gabions. One peak flow rating applied across period of record. Rating accounts for out of bank flow derived by hydraulic modelling.	Data estimated by NRFA for 21/09 - 27/09 1998 during weir refurbishment. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Impermeable silurian deposits. Peaty soils in eastern hills, seasonally wet. Most of western catchment has soils with permeable substrata. Mainly grassland, hill farming in uplands, livestock at lower levels. Some forest.	Few abstractions and discharges. Natural to within 10% at Q95.
63002	Rheidol at Llanbadarn Fawr	182.1	SN6011780362	260117.0	280362.0	52°24'12.0129"N 4°03'27.4235"W	52.40334	-4.05762	Rheidol	Llanbadarn Fawr	8.9	NRW	063002	63	1965-01-01		VA			10.0	true	true	false	true	false	false	false	false	false	false	false	false	false	SPGH	2001-02-21	2023-09-30	8.604	0.892	2005-03-13	2005-03-13	129.6	2012-06-09	2012-06-09	1.816	3.432	5.787	19.06	25.09	0.42	8257	7887	95.519	1965-01-01		94.261	4.2	93.4	360.0	528.0	750.0	1769	1756	0.1776	0.0097	0.6862	0.0937	0.0077	0.2115	0.0332	0.6443	0.0892	0.0043			1.0		0.0271	0.1357	0.0789	0.66	0.435	0.898	194.0	43.99	52.3	69.3	11.0	46.15	27.44	341	259	0.14	9.3	181.88	0.977	0.709	0.0537	0.0007			0.0012			1963..2000	1963-10-01..2001-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. HEP has significant effect on flows across the range and shoaling affects the gauged section. Station closed in 1984, reopened on 31/10/95 and bank stabilisation works were carried out in 2012/2013.	Velocity area station. HEP has significant effect on flows across the range and shoaling affects the gauged section. Station closed in 1984, reopened on 31/10/95 and bank stabilisation works were carried out in 2012/2013. Station added to peak flows dataset in August 2024 (WINFAP Files v13).	Cableway was removed in mid-2000s. Bed material is alluvium deposits - mix of boulders and grit. Steep left bank, right bank more gentle with small flood plain. Low flow performance is believed to be very good. Well gauged to bank full, but not above. Surface velocity measurement and cross section area have been used to calculate flood plain flow at QMED, it is about 2% of rated flow. Two peak flow ratings across period of record.	Station closed in 1984, reopened on 31/10/1995 and bank stabilisation works were carried out in 2012/2013. Daily flows should be used with caution due to tidal influence and a very mobile control that can lead to innaccurate low flow measurements. Peak flows rejected as unrepresentative of the catchment from 1963-2001 due to uncertainty in flows before flood banks were constructed in 2001.	Mainly Silurian with some Ordovician on the northern catchment boundary. Soils mainly have permeable substrate. Mostly hill farming in upland areas. Some forest.	Impounding reservoirs Cwm Rheidol, Dinas and Nant y Moch for hydro-electric power generation have a significant effect on flows across the range.
63003	Wyre at Llanrhystud	40.6	SN5418469790	254184.0	269790.0	52°18'24.5157"N 4°08'24.6075"W	52.30681	-4.14017	Wyre	Llanrhystud	19.3	NRW	063003	63	1969-01-01		VA	110.0		49.8	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1970-01-01	2023-09-30	1.012	0.001	2022-08-31	2022-09-01	35.48	1973-08-05	1973-08-05	0.048	0.257	0.557	2.491	3.431	0.41	19631	12387	63.099	1968-10-01	1980-10-01	20.08	23.2	127.8	194.1	283.6	360.0	1254	1182	0.0877	0.0258	0.8518	0.0125	0.0216	0.0707	0.0207	0.8857	0.017	0.0059			1.0				0.0382	0.53	0.472	1.0	110.7	38.05	37.4	49.3	10.0	17.98	7.92	197	304	0.28	23.2	40.55	0.505	0.937	0.0383	0.0002	0.0		0.0018			1998..2022	1999-10-01..2023-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with ford 10m downstream acting.	Velocity area station. Station closed from Dec 1979 when ford washed away, ford rebuilt and station re-opened in early 1980s. Ford has been deteriorating since about 2005, and was closed to traffic in March 2010.	Coarse gravel bed. Inlet pipe in 3 parts, allowing silt to get in pipe and block. Bypassing at highest flows down a mill stream and along a road. Multiple peak flow ratings across period of record. Scatter in gaugings and ratings unlikely to fully account for changes due to ford deterioration. High flow gaugings in 1970s enabling high flow rating for that period, but lack of high flow gaugings from 1982 onwards.	Peak flow data post-1999 rejected due to change in suitability. AMAX 1 max in Aug 1973 triggered by a storm greater than 100mm; uncertainty in gauged flow as upstream bridge collapsed during this event with likely impact on peak level recorded. However, nearby station at Pont Llolwyn also recorded AMAX1 for the period 1968-1979 so gauged flow retained. Flows 24 Dec 2011 - 23 Jan 2012 estimated from 63001 data due to anomalous behaviour; similar behaviour exhibited in Jan 2005 and 2011 unable to be improved by measuring authority. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Small Cardigan bay catchment, mostly lowland. Impermeable Silurian geology. Does not extend as far as the high Cambrian Mountains. Rural land use, predominantly grassland supporting dairy farming, with small patches of woodland.	Natural regime - no known artificial influences.
63004	Ystwyth at Cwm Ystwyth	32.1	SN7907573700	279075.0	273700.0	52°20'52.7816"N 3°46'36.1166"W	52.34799	-3.7767	Ystwyth	Cwm Ystwyth	198.5	NRW	063004	63	1984		FV				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1984-05-01	2023-09-30	2.039	0.01	2018-07-03	2018-08-11	82.91	1986-11-23	1986-11-23	0.178	0.532	0.978	4.823	7.221	0.29	14397	14355	99.708				209.5	337.1	474.9	536.8	611.6	1984	1993	0.2239	0.0006	0.6068	0.0878	0.0701	0.1916	0.0012	0.5008	0.3024	0.0034			1.0					0.65	0.36	0.991	185.5	49.73	63.3	85.1	12.0	14.5	7.65	455	190	0.12	209.5	31.85	0.479	0.759	0.0314	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir; rural catchment with numerous disused lead and zinc mines.	Flat V weir with vertical side walls. Channel width 13m.	Land access to station agreed with landowner (as of 2009); should permit future high flow gauging and work to increase confidence in station performance. Some cracking on weir - difficult to clear of weed growth due to rough concrete. High flows contained within structure; non-modularity only occurs during extreme events.	Flows over 1987-90 period derived from three-hourly level data. Flows 5 Aug-20 Oct 1987 erroneous and deleted in July 2014. Power and battery failure on site resulted in two periods of missing data between July and September 2022.	Mainly impermeable Silurian shales and grits. Catchment comprised of grassland (mainly used for sheep farming) and forestry. There are numerous disused lead and zinc mines within the catchment.
64001	Dyfi at Dyfi Bridge	471.3	SH7448901958	274489.0	301958.0	52°36'03.1304"N 3°51'16.6924"W	52.60087	-3.85464	Dyfi	Dyfi Bridge	5.9	NRW	064001	64	1962-01-01		VA	500.0		8.1	true	true	false	true	false	true	true	false	true	false	true	true	false	N	1962-10-01	2023-09-30	23.299	0.172	2014-07-31	2014-07-31	461.9	1964-12-12	1964-12-12	2.106	7.143	12.72	54.68	78.65	0.38	22280	20694	92.882	1962-09-27		321.713	6.6	106.8	263.0	480.0	903.4	1837	1835	0.2935	0.0052	0.623	0.0578	0.0025	0.2521	0.0332	0.6166	0.0936	0.0024			1.0			0.0081	0.1181	0.66	0.478	0.995	269.8	39.85	58.4	75.6	11.1	40.49	20.37	281	222	0.07	6.6	464.61	0.533	0.763	0.0292	0.0004			0.0007					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Natural river section controlled by d/s gravel bar. Natural flow regime.	A 40m wide river section.	Natural river section controlled by d/s gravel bar at low flows and bridge arches at high flows. Flood Embankment on left bank at 4.5m. Multiple peak flow ratings applied across period of record, rated from gaugings and from 1990 ratings are extend using hydraulic model (which may also be applicable further back).	Records in early years are marred by substantial engineering works carried out on the bridge. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Impermeable Silurian formations, minor Boulder Clay and alluvium deposits. Catchment is mostly grassland/moorland, with extensive areas of forest. Patches of upland heath.	Natural to within 10% at Q95.
64002	Dysynni at Pont-y-Garth	75.1	SH6311706604	263117.0	306604.0	52°38'23.5040"N 4°01'27.7099"W	52.63986	-4.02436	Dysynni	Pont-y-Garth	2.3	NRW	064002	64	1966-01-01		VA	170.0		14.9	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1966-01-01	2023-09-30	4.407	0.185	1976-09-07	1976-09-07	97.51	1980-10-27	1980-10-27	0.635	1.791	2.91	9.649	12.79	0.48	21092	21000	99.564	1965-11-03		63.605	5.8	70.9	318.7	551.5	890.3	2035	2166	0.2306	0.0042	0.6479	0.0804	0.001	0.18	0.0195	0.5478	0.2414	0.0024			1.0		0.0005		0.1102	0.66	0.448	0.951	323.1	42.81	67.0	90.8	11.8	18.67	9.7	314	209	0.21	5.8	74.93	0.814	0.624	0.0551	0.0002			0.0			1966..1996	1966-10-01..1997-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal flat-v style pitching strip. Natural flow regime.	Velocity area station with informal flat-v style pitching strip. Station opened in 1965 in a 40m wide section between floodbanks, controlled by sheet piling d/s in straight channel which was dredged prior to station construction. Station was insensitive at low flows, so moved 50m downstream in 1997; sheet-piling removed and weir constructed.	Insensitive at low flows. Multiple peak flow ratings applied across period of record. Suffers from weed growth in the channel and on the pitching strip control, with regular clearance sometimes difficult due to high water levels, and also gravel accumulation. Significant gravel removal in 2014 has improved section so that pitching strip operates correctly. Station is vulnerable to tidal influence since removal of sheet piling. Recent tree clearance to left bank will enable higher flows to be gauged, although difficult to gauge at high flows due to flashy response.	Pre-1997 peak flow data from the old station at a slightly different location is rejected pending review of consistency with the later data. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Impermeable Ordovician sediments with volcanic rocks outcropping. Tal-y-Llyn (southernmost ribbon lake in Britain) lies within catchment. Mostly grassland, with areas of upland heath. Some forest in S of catchment.	Natural to within 10% at Q95.
64004	Twymyn at Cemmaes Road	111.45	SH8252804730	282528.0	304730.0	52°37'39.2759"N 3°44'13.1497"W	52.62758	-3.73699	Twymyn	Cemmaes Road	26.4	NRW		64	1968-01-01	2001-12-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1995-07-01	2001-12-31	4.199	0.094	1999-08-01	1999-08-01	96.65	1998-03-06	1998-03-06	0.273	1.241	2.268	9.541	14.01	0.37	2376	2376	100.0				28.4	140.6	290.0	443.1	538.8	1645	1549	0.2016	0.0043	0.7072	0.0681	0.0022	0.1625	0.0356	0.707	0.0922	0.0019			1.0			0.0129	0.1397	0.66	0.438	0.995	217.5	41.49	50.9	64.4	10.8	24.83	14.78	289	237	0.07	28.4	106.78	0.313	0.831	0.0218	0.0007			0.0005					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Closed in 2001.	Velocity-Area site with an extremely mobile bed. Attempts were made to stabilise the section with engineering works and the inclusion of a gravel trap. The gravel trap failed to perform (requiring far more emptying than envisaged) and the situation of the trap also spoiled hydraulic conditions in the cableway section. Site was therefore considered uneconomical to maintain and was closed in 2001.
64006	Leri at Dolybont	47.2	SN6346288050	263462.0	288050.0	52°28'23.7180"N 4°00'41.8546"W	52.47326	-4.01163	Leri	Dolybont	14.6	NRW	064006	64	1971-01-01		C		126.0	51.2	true	true	false	true	false	false	false	false	false	false	false	false	false	S	1960-10-01	2023-09-30	1.386	0.017	1970-06-21	1970-06-21	42.45	2012-06-08	2012-06-08	0.057	0.465	0.854	3.272	4.37	0.49	23010	19815	86.115	1971-09-12		18.455	18.5	112.6	263.2	403.9	520.4	1508	1496	0.1023	0.0107	0.8344	0.0342	0.0065	0.1141	0.0366	0.7869	0.0579	0.0022			1.0			0.0511	0.1685	0.66	0.504	0.983	204.2	38.47	42.8	57.3	10.0	17.6	9.22	262	264	0.24	18.5	47.02	0.286	0.935	0.0196	0.0012			0.0014			1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir in a straight flood-banked reach. Abstractions and discharges affect flow.	A 10m wide single crest Crump profile weir in a straight flood-banked reach.	No cableway. Modular limit unknown. Wing walls contain flows to high levels. Suffers from gravel accumulation. Weir repaired summer 2018, awaiting sufficient gaugings to complete rating review. Single peak flow rating applied over period of record, which shows good fit to gaugings.	No daily flow data since September 2014 due to weir deterioration, data from 2011 should also be treated with caution. The river burst its banks u/s of the station during the record high flow event of 8 June 2012, causing some of the flow to bypass the station. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Predominantly impervious Silurian rocks. Majority grassland, some forested area.	Abstraction into Craig-y-Pistyll reservoir and five discharges upstream of gauging station; substantial net loss of water resulting from these transfers, since sum of discharges does not nearly equal amount of water withdrawn for reservoir.
64010	Mawddach at Tyddyn Gwladys	63.1	SH7352926744	273529.0	326744.0	52°49'24.0378"N 3°52'42.0520"W	52.82334	-3.87835	Mawddach	Tyddyn Gwladys	87.0	NRW	064010	64	1994-01-01		VA				true	true	false	true	false	false	false	false	false	false	false	false	false	N	1997-01-01	2023-09-30	4.123	0.053	2010-06-27	2010-06-27	74.43	2005-01-07	2005-01-07	0.221	0.824	1.816	10.51	15.54	0.23	9769	8602	88.054	1994-11-23		106.353	91.2	263.2	392.3	503.2	730.2	2123	2007	0.2594	0.0009	0.5435	0.1834	0.002	0.2024	0.0001	0.5665	0.2286	0.0016			1.0			0.0878	0.3675	0.71	0.326	0.997	159.8	52.0	61.8	80.0	11.7	14.6	8.46	387	255	0.19	91.2	63.65	0.474	0.965	0.0319	0.0			0.0			2000..2003	2001-05-01..2004-07-07	gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity Area station; predominantly forested catchment, highly responsive.	Velocity Area station with pitching strip 100m downstream of cableway that is used to stabilise rating curve at low flow. Station added to peak flows dataset in August 2024 (WINFAP Files v13).	Problems with scouring of bed from boulders and shale movements in flood events. Station destroyed during 2001 flood event. Bed has since thought to have remained relatively stable. High responsiveness and geographical location make site difficult to gauge particularly in high flows. Multiple peak flow ratings across period of record.	Suspect data 2001-2004 following flooding event that destroyed station.	Steep mountainous catchment with much bare rock. Predominantly forested.	Highly responsive and largely natural.
64011	Cerist at Llaw'r Cae	5.35	SH8195316316	281953.0	316316.0	52°43'53.6067"N 3°44'58.6808"W	52.73156	-3.74963	Cerist	Llaw'r Cae	162.8	NRW	064011	64	1997-09-02		C				true	true	false	true	false	false	false	false	false	false	false	false	false	N	1997-09-02	2023-09-30	0.393	0.036	2018-07-19	2020-06-13	5.025	2002-02-01	2002-02-01	0.074	0.14	0.219	0.906	1.248	0.43	9525	9525	100.0	1997-12-01		6.212	162.8	235.3	420.0	616.8	676.2	2333	2159	0.0107		0.9341	0.0377		0.0011	0.0044	0.8386	0.1558				1.0					0.66	0.459	1.0	433.3	42.06	66.9	84.9	12.4	4.11	2.0	419	66	0.22	163.8	5.35	0.058		0.0037	0.0			0.0					gdf;gmf;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir 4m wide. Small upland catchment with largely natural flow regime.	Crump profile weir 4m wide. Small upland catchment with largely natural flow regime. Station opened in 1997, mainly as a result of increased interest in hydropower development in the area and a lack of gauged data from small upland catchments.	Single theoretical rating valid since station built in 1997. Some scatter in low flow check gaugings, largely due to gravel accumulation (and removal) and weed growth. Check gaugings tighten up at mid-high range flows. Gravel removed annually from gravel trap. QMED contained within wingwalls, however flows do go out of bank upstream causing some ponding, which is not thought to be significant. Lack of high flow gaugings (and therefore rating extrapolation) mean this station is probably borderline in terms of meeting Peak Flow FEH QMED criteria. Further high flow gaugings are being targeted to calibrate the high flow rating limb. No tail measurement or cableway.	Station added to peak flows dataset in October 2018 (WINFAP Files v7).	Small, wet, mountainous, upland catchment. Bedrock largely consists of Ordovician mudstone and siltstone, with glacial deposits in the valley bottom.	Largely natural flow regime, only one small licensed abstraction upstream. Hydrological response is flashy, with higher than average baseflows for this type of catchment - possibly supported by springs (Q95 is approx 20% of Qmean).
65001	Glaslyn at Beddgelert	68.6	SH5916447783	259164.0	347783.0	53°00'31.6040"N 4°06'01.8551"W	53.00878	-4.10052	Glaslyn	Beddgelert	32.9	NRW	065001	65	1961-01-01		VA	100.0		12.8	true	true	false	true	false	false	true	false	true	true	false	false	true	SH	1961-12-01	2023-09-30	5.827	0.039	1973-07-09	1973-07-09	110.2	1989-03-09	1989-03-09	0.582	1.851	3.265	13.59	19.62	0.32	22584	22584	100.0	1961-11-09		106.6	36.6	106.3	327.7	581.5	1078.4	3030	2810	0.1813	0.0007	0.5848	0.1547	0.0033	0.1418	0.0045	0.5285	0.3016	0.0014			1.0				0.1218	0.62	0.406	0.895	309.4	45.09	80.1	106.0	13.0	16.62	7.46	338	205	0.07	36.6	66.95	1.717	0.845	0.0486	0.0002			0.0003			1986		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	River section with non-standard stone section control.	A 20m wide river section with non-standard stone section control. High profile site due to its importance for early flood warnings.	Gravel removal may have produced abrupt level changes in the past (accumulations downstream cause backing up) but careful management and regular clearance allow a more stable rating to be maintained. Multiple ratings applied to period of record because of unstable bed, however only Rating 1, M, S, V and X are presented due to relevance to AMAX Flows. Station bypassed above levels of approximately 1.8m. Out of bank flow is substantial and is now accounted for in modelled high flow rating limbs that have been applied to the whole record. Rating tends to be insensitive at low flows due to subtle movements in the natural bed control but the non-standard stone section control improves stability. High flow gauging restricted to peaks and troughs because of rapid water level changes. No peak flow gaugings prior to 1989, therefore early ratings unverified.	Rating review in 2022 resulted in high flow modelled limbs being added to all historic ratings and flows reprocessed. Uncertainty remains at very high flows as there are no gaugings including the bypassing flow available to assess performance of the modelled limbs. Peak flow data prior to 1967 has been entered but may be regarded as suspect. Drop out in mean flows in early June 2020 due to gravel extraction taking place. Gaugings in February 2020 should be treated with caution due to bypassing flow not being measured and possible equipment issues. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Very wet, upland catchment draining southern flanks of Snowdonia with much bare rock exposure (impermeable Silurian volcanics). Otherwise, land use is mostly grassland and rough moorland grazing. Some forest.	Lakes (Dinas and Gwynant) and HEP discharge from the higher Llyn Llydaw marginally affect records.
65004	Gwyrfai at Bontnewydd	47.9	SH4838659889	248386.0	359889.0	53°06'52.4542"N 4°16'00.2139"W	53.11457	-4.26673	Gwyrfai	Bontnewydd	30.9	NRW	065004	65	1970-01-01		C		126.0	17.1	true	true	false	true	false	false	false	false	false	false	false	false	false	SP	1970-10-01	2023-09-30	2.345	0.061	1972-10-07	1972-10-07	34.84	2015-12-26	2015-12-26	0.295	0.805	1.482	5.394	7.357	0.42	19358	17594	90.887	1971-03-13		22.28	34.5	128.9	254.8	543.5	1067.3	2405	2154	0.1365	0.0058	0.6917	0.0781	0.0182	0.1044	0.0058	0.6602	0.1951	0.0064			1.0		0.0115		0.3789	0.54	0.412	0.862	214.1	45.18	62.9	81.1	11.7	18.68	10.66	295	267	0.28	34.5	46.11	0.973	0.857	0.0654	0.001			0.0024			1970..2009		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard shallow V Crump weir. Significant PWS abstraction from Llyn Cwellyn reservoir u/s.	A 10.37m wide non-standard shallow V Crump weir, rebuilt in late 2009 after original standard Crump weir was damaged in 2004.	Weir has 1:2 upstream slope and 1:20 downstream slope, which consists of a rocky ramp split by oak beams and shallow pools for improved fish passage (p value of weir crest remained unchanged after rebuild). Contains flows to high levels. Weir thought to remain modular, although no downstream level recorder so modular limit unknown. Cableway installed in 2009 for high flow gauging. Check gauging suggests some (constant) loss due to inadequate cut-offs, hence low flows affected. Two peak flow ratings applied across period of record.	2004-05 data suspect, particularly at low flows as uncertainty surrounding date of weir failure. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	A steep and typically Snowdonian upland catchment. Impermeable Lower Palaeozoic and volcanics. Mostly grassland (rough moorland), small mount of forest cover.	Significant PWS abstraction from Llyn Cwellyn reservoir u/s.
65005	Erch at Pencaenewydd	18.1	SH4001340372	240013.0	340372.0	52°56'12.6074"N 4°22'55.3053"W	52.93684	-4.38203	Erch	Pencaenewydd	56.1	NRW	065005	65	1973-01-01		C		75.8	25.6	true	true	false	true	false	true	true	false	true	true	false	true	true	N	1973-01-01	2023-09-30	0.618	0.044	1976-08-27	1976-08-27	28.0	2000-08-21	2000-08-21	0.099	0.238	0.396	1.347	1.908	0.53	18535	18535	100.0	1972-09-05		11.0	56.8	104.9	143.9	317.7	551.4	1535	1477	0.1463	0.0045	0.7702	0.0459	0.0043	0.1619	0.0096	0.7575	0.0617	0.0042			1.0				0.8538	0.56	0.439	0.991	95.9	39.31	47.5	61.2	9.9	12.62	7.2	175	179	0.48	56.8	19.42	0.78	0.957	0.071	0.0			0.0012					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump profile weir. Located in the lowland catchment on the Lleyn peninsula. Natural flow regime.	A 6m wide Crump profile weir.	Gravel accumulation issues - gravel shovelled over weir crest on an annual basis. High wing walls contain the full flow range. Bridge constructed upstream of weir on wingwalls to assist in ability to gauge higher flows. Ongoing investigation into unexplained changes in water balance over time. Two peak flow ratings applied over period of record.	The outstanding flood in August 2000 resulted from a localised but very intense thunderstorm. It was contained within the structure (and confirmed by wrack marks) but the peak flow is an estimate. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Mostly lowland catchment on the Lleyn peninsula, with hills in N. Impermeable bedrock geology, covered with Boulder Clay. Mainly grassland (rough grazing), some woodland.	Natural to within 10% at Q95.
65006	Seiont at Peblic Mill	74.4	SH4945062269	249450.0	362269.0	53°08'10.4978"N 4°15'07.0563"W	53.13625	-4.25196	Seiont	Peblic Mill	18.6	NRW	065006	65	1976-01-01		VA			5.5	true	true	false	true	false	false	false	false	false	true	false	false	true	H	1976-08-01	2023-09-30	5.079	0.144	2010-06-27	2010-06-27	66.3	2015-12-26	2015-12-26	0.634	1.798	3.145	11.72	16.0	0.41	17227	16877	97.968	1975-09-11		49.8	19.4	104.5	281.5	644.7	1063.1	2339	2258	0.1016	0.0089	0.6477	0.1002	0.0272	0.0681	0.0133	0.576	0.2917	0.0278			1.0		0.0524	0.0001	0.1584	0.49	0.499	0.849	261.8	39.37	65.2	87.6	12.0	22.58	14.03	321	301	0.24	20.4	79.89	1.458	0.78	0.0621	0.0051	0.375	0.694	0.0097	0.675	0.699	1989		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard compound crump weir. Pumped storage scheme marginally affects flows.	Gauging station located on the left bank upstream of a non-standard compound control (not owned or managed/maintained by NRW). Originally built as part of investigations prior to construction of the Dinorwic pumped-storage scheme.	A rated section which has not yet been bypassed (possibility for bypassing on the left bank floodplain). Left hand bend in river channel present between structure and gauging hut. Well gauged for peak flows across the in-bank range, with a good fit of ratings to gaugings. Extrapolated beyond QMED.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	A steep, wet catchment on impermeable formations, with much bare rock surface - Snowdon and Glyder Fawr are both in the catchment. Contains two large ribbon lakes, Padarn and Peris, the latter acting as the lower reservoir of the Dinorwic scheme. Land use is mainly grassland (rough upland grazing), some forest.	Dinorwic pumped storage scheme marginally affects flows.
65007	Dwyfor at Garndolbenmaen	52.4	SH4986642916	249866.0	342916.0	52°57'45.1230"N 4°14'12.2035"W	52.96253	-4.23672	Dwyfor	Garndolbenmaen	85.5	NRW	065007	65	1975-01-01		CC			11.9	true	true	false	false	true	false	false	false	true	false	false	false	false	SRP	1975-04-01	2023-09-30	2.725	0.024	1984-08-20	1984-08-20	36.7	1981-03-10	1981-03-10	0.308	0.945	1.62	6.25	8.77	0.37	17715	17684	99.825	1975-02-19		35.934	84.6	119.6	230.0	480.0	784.7	2143	2055	0.0377	0.0066	0.8293	0.0953	0.0046	0.027	0.0007	0.7553	0.2089	0.0001			1.0				0.5571	0.56	0.404	0.968	194.9	45.78	64.3	85.2	12.0	13.4	8.1	268	218	0.24	84.6	51.6	0.762	0.681	0.0558	0.0			0.0			1974..2000	1975-04-21..2001-08-25	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir. Station built as the control point for the Cwmystradllyn Reservoir/Afon Dwyfawr regulation scheme, and is consequently regulated by both reservoir and scheme.	Compound Crump profile weir. Divide piers separate the 6.5m wide lower crest from two flanking crests each 5m wide. Station built as the control point for the Cwmystradllyn Reservoir/Afon Dwyfawr regulation scheme.	Suffers from weed growth and gravel issues: weed frequently removed, gravel occasionally cleared. Station not intended for high flow gauging; no cableway present to gauge high flows. Well gauged below 0.4m with good fit to rating. Bypassed at flows greater than 10 year return period. Two peak flow ratings across period of record.	Peak flows rejected as unrepresentative of the catchment from 1975-2001 due to low number of gaugings of uncertain quality, and all well below QMED and the lowest AMAX/POT. Frequency of gaugings increased from 2002. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	The catchment is mainly steep, developed on impermeable Lower Palaeozoic formations; mostly Boulder Clay cover. Grassland (rough grazing), much bare rock.	Flows regulated by the Cwmystradllyn Reservoir/Afon Dwyfawr scheme. Public water supply abstraction.
65008	Peris at Nant Peris	11.96	SH6083757960	260837.0	357960.0	53°06'02.2978"N 4°04'47.9947"W	53.10064	-4.08	Peris	Nant Peris	143.0	NRW	065008	65	1971-01-01		VA	13.57			true	false	false	false	false	false	false	false	false	false	false	false	false	N	1971-01-01	2023-09-30	1.246	0.014	2018-07-14	2018-07-14	29.21	2015-12-25	2015-12-25	0.092	0.285	0.559	3.109	4.831	0.21	19266	18771	97.431				133.3	248.3	525.4	803.1	1060.7	3639	3465	0.0105	0.0039	0.5738	0.2171	0.0169		0.0016	0.4934	0.5014	0.0036			1.0					0.71	0.548	0.996	487.9	28.5	90.7	123.6	14.3	5.43	3.19	527	308	0.17	145.4	10.32	2.363	0.705	0.0444	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-Area station (previously known at 65801 Nant Peris at Tan-yr-Alt). Very responsive natural flow regime.	Velocity-Area station (previously known at 65801 Nant Peris at Tan-yr-Alt) in almost straight reach. Channel width: 5m.	Informal concrete bed control constructed in Sept. 1978. Bankfull about 2 metres and all flows thought to be contained to date. Peak flow rating possible due to cableway on site. Substantial problems with maintaining an accurate rating due to non-standard concrete control d/s and extensive gravel accumulation problems u/s and d/s. Annual gravel clearance helps reduces problem.	Data for 2000-2005 should be treated with caution due to problems with gravel accretion.	The Nant Peris follows the Llanberis Pass and drains a rugged, steep and exceptionally wet (annual av. c3500 mm) catchment to the north-east of Snowdon. Impermeable geology, land use is rough grazing, with much bare rock exposure.	Very responsive natural flow regime.
65014	Colwyn at Hafod Wydr	6.58	SH5742650203	257426.0	350203.0	53°01'48.2065"N 4°07'38.8896"W	53.03006	-4.12747	Colwyn	Hafod Wydr	171.0	NRW	065014	65	1995-07-01		C				true	false	false	false	false	false	false	false	false	false	false	false	false		1995-07-20	2023-09-30	0.592	0.011	2023-06-07	2023-06-07	9.311	2020-08-25	2020-08-25	0.051	0.145	0.272	1.51	2.23	0.22	10300	10300	100.0				156.1	211.6	419.7	618.4	893.5	3163	2955	0.0379		0.7988	0.0734	0.0042	0.0435		0.6856	0.2676	0.0033			1.0				0.0828	0.57	0.297	0.981	228.3	54.47	69.0	89.5	12.4	5.53	3.23	419	257	0.57	156.1	6.55	0.466	0.584	0.0298	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir; located in a steep section of the River Colwyn.	A 5m wide Crump weir (u/s approach depth 1m), located in a steep section of the River Colwyn.	Modular through to high flows. High wing walls prevent bypassing and structure only drowns at very high flows due to steep channel section d/s. Some problems with gravel accumulation, which is removed annually, and weed growth. Gauging challenging due to low velocities and unsuitability for ADCP. Low priority for gaugings so unsuitable as NRFA peak flow station.	Drop out in mean flows in early June 2020 due to gravel extraction taking place.	Impermeable catchment draining southern flanks of Snowdonia, predominantly Silurian volcanics often exposed at surface. Steep, wet catchment covered with grass, bare rock and some forested area. Used for rough grazing.	Highly responsive regime, used for early flood warnings.
65015	Llyfni at Pont Y Cim	48.14	SH4402052353	244020.0	352353.0	53°02'44.2527"N 4°19'41.6768"W	53.04563	-4.32824	Llyfni	Pont Y Cim	22.0	NRW	065015	65	1995-07-01		C				true	false	false	false	false	false	false	false	false	false	false	false	false		1995-07-01	2023-09-30	2.43	0.333	2010-06-27	2010-06-27	33.8	2015-12-26	2015-12-26	0.573	1.136	1.68	5.06	6.793	0.53	10319	10319	100.0				18.0	98.0	231.5	472.9	730.0	2060	1936	0.0561	0.004	0.7395	0.0924	0.022	0.0266	0.0171	0.692	0.2293	0.0192			1.0				0.2488	0.56	0.449	0.907	205.3	44.54	62.7	81.4	12.0	15.61	9.13	253	296	0.31	18.0	46.75	0.764	0.833	0.0547	0.0053	0.435	0.805	0.0089	0.682	0.75			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir; ongoing issues at site may affect data.	A 9m wide Crump weir (u/s approach depth 0.5m).	Data quality thought to be of acceptable quality at low-medium flows, but poor approach flow conditions cause significant problems when attempting to calibrate weir in high flow conditions. Gravel accumulation a serious issue at this site.	Data from 10 Jan 2011 suspect due to discrepancy between in-well levels and in-river levels (but MA believe problem to have been present for longer), and subject to ongoing investigation by MA (as of September 2013).	Impermeable catchment draining western flanks of Snowdonia. Lower Palaeozoic formations and volcanics partially covered with glacial till in lower reaches. Mostly grassland, with remainder of catchment made up of forest and bare rock. Used for rough grazing.
66001	Clwyd at Pont-y-Cambwll	404.0	SJ0698870961	306988.0	370961.0	53°13'39.0647"N 3°23'41.0879"W	53.22752	-3.39475	Clwyd	Pont-y-Cambwll	15.3	NRW	066001	66	1959-01-01		VA	50.0			true	true	false	true	false	false	false	false	false	true	true	false	true	RG	1959-10-01	2023-09-30	6.375	0.398	1976-08-22	1976-08-22	88.8	2012-11-27	2012-11-27	0.945	2.1	3.85	14.9	20.8	0.58	23376	23376	100.0	1959-10-01		50.623	17.6	55.7	202.1	358.6	553.9	911	910	0.1909	0.0344	0.7302	0.0218	0.0134	0.1591	0.1792	0.6174	0.0272	0.0164	0.2019	0.1872	0.6109		0.1001		0.5235	0.41	0.588	0.993	117.6	32.15	34.8	45.9	9.6	44.5	20.13	207	15	0.09	17.6	404.56	0.518	0.706	0.057	0.0036			0.0058	0.783	0.708	1982..1984		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, opened 1959. Low flows augmented by groundwater.	Velocity area station, opened 1959.	Station refitted June-Aug 1997, with gabions added to stabilise the section and bed check weir. Out of bank flows occur on both banks around 50 cumecs; some out-of-bank storage u/s at high flows in Vale of Clwyd. Rating is relatively stable although known to be affected by weed growth and sediment/sand movement - inlet pipe prone to silting up although cleared regularly. Weed growth is cleared as required and current meter gauging undertaken. A bend 100m downstream causes variation in velocities across the section, which results in greater uncertainty in the rating, particularly at low flows. New rating created following Feb 2004 flood. Multiple peak flow ratings also exist due to instability of the station. Good fit to gaugings up to QMED, beyond which greater scatter occurs. River often flows over a low section of bank upstream (at least once a year).	No GDFs during refit June-Aug 1997. Early peak flow record (1959-69) is not presented because it is available only as flow values, and because of the uncertainties in the ratings. Full period of record peak flow data reviewed and released in April 2017 (WINFAP v5).	Headwaters rise in Silurian shales and grits of Denbigh Moors and Clwydian Hills, then flow across generally confined Triassic Sandstone aquifer (with artesian heads over large areas). Mostly superficial deposits, including Boulder Clay. Rural catchment with mixed land use: grouse moors to lowland dairy farming, some forested (mainly in SW).	Low flows augmented using groundwater (approx. 12% of Q95 flow). Flood discharges affected by floodplain storage in Vale of Clwyd u/s.
66002	Elwy at Pant yr Onen	220.0	SJ021704	302100.0	370400.0	53°13'17.7514"N 3°28'03.9689"W	53.2216	-3.46777	Elwy	Pant yr Onen	35.7	NRW		66	1961-01-01	1973-12-31	VA			16.0	true	true	false	true	false	false	false	false	false	false	false	false	false	P	1961-10-01	1974-12-31	4.573	0.227	1962-07-29	1962-07-29	92.35	1968-03-23	1968-03-23	0.452	1.313	2.492	10.76	15.54	0.46	4840	4506	93.099	1961-07-26	1974-12-31	65.6	36.4	148.7	264.8	398.6	515.5	1085	1145	0.0978	0.0113	0.8138	0.0639	0.0024	0.0668	0.0655	0.7975	0.0625	0.0032		0.0399	0.9601		0.004	0.0243	0.5758	0.58	0.483	0.979	129.6	38.81	42.8	59.1	10.1	40.81	22.89	269	34	0.16	36.4	218.51	0.406	0.902	0.0339	0.0004			0.0008			1973		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rated section. Flow affected by PWS. Station closed in 1973.	Rated section. Station closed in 1973.	Section formed just u/s of a small tributary; thought to be far enough to avoid backwater affects. Medium-sized gravel bed. During a flood the peak on the tributary has probably passed before the main peak occurs. In extreme floods (>2.9m) the stations begins to be bypassed u/s on the left bank over a distance of 75m. No gaugings available above QMED. High flows may have been substantially underestimated. Multiple peak flow ratings applied across period of record, the most recent is valid from August 1971. The ratings found for this station are all very similar, diverging slightly beyond 2m.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The Elwy catchment lies on impermeable Silurian Shales and Mudstones, with a small amount of Carboniferous Limestone and an extensive Boulder Clay cover. Land use is predominantly grassland, with some forestry in lower valley.	Runoff reduced by public water supply abstraction.
66004	Wheeler at Bodfari	62.9	SJ1050171336	310501.0	371336.0	53°13'53.3714"N 3°20'32.0806"W	53.23149	-3.34224	Wheeler	Bodfari	54.6	NRW	066004	66	1970-01-01		C		8.1	13.7	true	true	false	true	false	false	true	false	false	true	false	false	true	N	1970-01-01	2023-07-13	0.749	0.169	1976-09-06	1976-09-06	6.695	2019-06-12	2019-06-12	0.243	0.41	0.604	1.4	1.71	0.82	19552	19053	97.448	1967-09-01	2023-07-14	3.739	55.1	144.7	199.7	274.7	437.1	852	863	0.186	0.04	0.7266	0.015	0.0191	0.1144	0.2527	0.5835	0.0372	0.0103		0.6914	0.3086		0.2185		0.1666	0.38	0.696	0.975	108.7	25.19	33.3	44.1	10.1	14.22	7.84	207	243	0.09	55.1	62.91	0.191	0.978	0.028	0.0022			0.0036			1973..1984		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Single-level Crump weir. Originally a temporary timber weir. Natural flow regime.	Single-level Crump weir. Weir 3.034m wide, between vertical sidewalls with eel pass. Immediately d/s of rectangular channel beneath disused railway bridge. Originally a temporary timber weir between Sept 1967 and Sept 1969. Station closed on 14/07/2023 due to access issues.	Limited seasonal weed growth. Gravel accretion occurs u/s of weir, cleared regularly. Station bypassed at high flows due to bend u/s of bridge (for example, during the 2000 flood event). Bridge u/s causes some surcharging and is obstructed at high flows; flow data above 3.95 m3/s are highly suspect and should not be used. Station refitted in June 1997; hut re-built and bridge installed, but weir untouched (no rating change). Two peak flow ratings applied across period of record, the most recent is valid from January 1974. Well gauged to QMED with good fit to rating. Out of bank flow not considered in the current rating.	Used predominantly as low flow station. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Moderate permeability carboniferous limestone to N of river; impermeable Silurian to S. Extensive cover of patchy sand and gravel deposits and Boulder Clay. Mainly grassland, some forest.	Natural to within 10% at Q95.
66005	Clwyd at Ruthin Weir	95.3	SJ1218559214	312185.0	359214.0	53°07'22.2198"N 3°18'49.2861"W	53.12284	-3.31369	Clwyd	Ruthin Weir	51.3	NRW	066005	66	1970-01-01		MIS		39.0	82.5	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1971-07-01	2023-09-30	1.418	0.001	2022-09-22	2022-09-22	21.0	2000-11-09	2000-11-09	0.072	0.351	0.805	3.532	4.791	0.54	19085	14082	73.786	1971-06-24		17.21	51.5	109.9	238.3	348.4	500.7	956	958	0.2288	0.013	0.7104	0.0275	0.0116	0.1994	0.117	0.6476	0.0237	0.0115	0.0664	0.1699	0.7638		0.0216		0.5892	0.51	0.518	0.995	114.8	34.93	35.0	46.3	9.3	27.59	12.77	234	46	0.18	51.5	96.39	0.349	0.732	0.0372	0.0032			0.0053	0.556	0.159	1984..1987		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard concrete weir with central low flow notch (short trapezoidal flume).	Station rebuilt in 2009. Central notch is for low flows and fish pass.	Weir width: 14m. Large modular range (extending well beyond the 2000 flood). Hydraulic continuity between GW and streamflow along part of Afons Clywd and Hesbin. Larinier fish pass constructed up centre of central notch as part of rebuild in 2009 (used to be 3 stepped pools). Side looking ADCP installed under the bridge in 2010, used as backup. Above 1.2m, flow backs up behind bridge which causes flooding of fields upstream, but no bypassing. D/s stilling basin has walls with low flow notches cut out. GDF gaugings completed through flow range. Three peak flow ratings applied across period of record based on gaugings. High confidence in rating up until bank full. Site is well gauged below QMED with some high flow gaugings.	Data was reprocessed from 2001 -2006, using three separate ratings for the period. High flows increased, and the 2005 and 2006 low flows were reduced.	Upper Clwyd rises in area of impermeable Palaeozoic rocks, with more permeable strata in lower catchment. Patchy Boulder Clay cover. Most grassland, with some forest cover.	Hydraulic continuity known to exist between groundwater and streamflow along parts of the Clywd and Hesbin. Mwrog Street Flood Alleviation Scheme constructed in 2004. This diverts all flow in excess of 1 cumec from the Mrwog around the town and discharges in the Clwyd downstream of the gauging station. Before this, all flows in the Mwrog discharged to the Clwyd upstream of the gauging station. Estimated reduction of QMED at Ruthin by approx 7%.
66006	Elwy at Pont-y-Gwyddel	194.0	SH9524071773	295240.0	371773.0	53°13'57.4503"N 3°34'15.3354"W	53.23263	-3.57093	Elwy	Pont-y-Gwyddel	87.9	NRW	066006	66	1973-12-01		VA			18.3	true	true	true	true	false	false	false	false	false	false	true	false	false	SRP	1973-12-01	2023-09-30	4.444	0.086	2005-08-12	2005-08-12	94.4	2012-11-26	2012-11-26	0.351	1.046	2.372	11.14	15.4	0.45	18201	18131	99.615	1972-12-28		74.4	88.6	177.3	276.7	402.4	515.5	1125	1185	0.0863	0.0089	0.819	0.0721	0.0025	0.0621	0.0456	0.8142	0.0703	0.0032			1.0		0.0046	0.0278	0.5497	0.6	0.476	0.98	129.0	39.46	43.9	60.8	10.1	29.94	14.33	284	28	0.16	88.8	191.35	0.364	0.899	0.0317	0.0004			0.0009			1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Twin arch bridge with castellated low profile crump weirs under each arch. Flows affected by abstraction for public water supply.	Twin arch bridge with castellated low profile crump weirs under each arch to enable low flow monitoring.	Twin arch bridge provides control at medium flows; 1m wide Crump weir blocks set in castellated manner within 10m wide archway to achieve low flow sensitivity. Low flows affected (>10%) by residual flow of 0.2 cumecs in Afon Aled (from reservoirs which drain 6% of catchment). Some bypassing at levels > 2.0m. Rebuild in 2006 when instrument hut moved from left bank to right bank, with works designed to contain more extreme events. New cableway installed summer 2007 to allow high flow gauging. Multiple peak flow ratings applied across period of record, the most recent is valid from October 2006. Gauged during out of bank flow conditions with good fit to rating.	Digital record starts on 28/12/1972 but there is significant periods of missing data up to 01/01/1982. AMAX and PoT data for this period are from chart records. New rating from 01/08/97, data reprocessed. Missing data July-September 2006 during rebuild. New rating developed June 2009 and applied back to June 2006. Full period of record peak flow data reviewed and released in April 2017 (WINFAP v5).	Impermeable Silurian strata with patchy Boulder Clay cover. Mainly grassland, sheep pastures; patchy woodland and some upland heath.	Abstraction for public water supply.
66011	Conwy at Cwmlanerch	344.5	SH8012958077	280129.0	358077.0	53°06'22.9510"N 3°47'31.4251"W	53.10638	-3.79206	Conwy	Cwmlanerch	11.6	NRW	066011	66	1964-01-01		VA	390.0		11.9	true	true	false	true	false	true	false	false	true	true	true	true	true	P	1964-06-01	2023-09-30	19.032	0.317	1984-07-30	1984-07-30	450.0	2019-03-16	2019-03-16	1.331	4.729	9.037	46.53	68.76	0.27	21671	21064	97.199	1964-05-29		405.009	9.8	197.9	329.7	492.6	1050.6	2156	2042	0.1701	0.0041	0.6522	0.1521	0.005	0.1615	0.0151	0.4901	0.3243	0.004			1.0			0.0183	0.2516	0.7	0.363	0.977	169.7	48.94	64.0	85.8	11.7	32.24	16.39	342	45	0.01	11.7	340.11	0.75	0.905	0.046	0.0005			0.0006			1971		gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Natural river section. A largely natural flow regime.	Natural river section, 50m wide.	Bankfull around 4m and some bypassing and u/s overbank storage (significant on right bank) at very high flows - channel contains 400 - 450 cumecs before bypassing occurs. Low flows are gauged at cableway using ADCP. Section requires frequent recalibration due to shifting bed control. Record is very important in Conwy valley flood forecasting so much effort is spent to ensure rating is kept accurate. Multiple peak flow ratings applied across period of record to account for shift in bed through time.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Ratings reviewed in 2022 and data reprocessed from 1980.	Very wet upland catchment - mainly mountainous, developed mostly impermeable Palaeozoic formations and volcanics. Mostly grassland, upland hill farming, with exposures of bare rock and heath. Some forest, mainly in lower catchment.	A largely natural flow regime; Runoff reduced by public water supply abstraction.
66012	Lledr at Pont Gethin	72.8	SH7860553821	278605.0	353821.0	53°04'04.0524"N 3°48'47.5445"W	53.06779	-3.81321	Lledr	Pont Gethin	37.7	NRW	066012	66	1969-01-01		VA				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1995-08-18	2023-09-30	5.272	0.052	1995-08-23	1995-08-23	134.0	2005-01-07	2005-01-07	0.321	1.189	2.3	13.1	19.9	0.23	10271	10265	99.942				37.0	191.8	319.6	525.2	865.6	2626	2450	0.2774	0.0039	0.5637	0.1287	0.0084	0.2777	0.0049	0.3308	0.3757	0.0054			1.0			0.0329	0.0646	0.71	0.346	0.979	211.1	51.17	71.0	94.8	12.2	18.35	10.56	338	57	0.08	37.4	70.41	0.762	0.843	0.0433	0.0004			0.001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Site previously known as Gethin's Bridge. Located in steep, rural catchment.	Site previously known as Gethin's Bridge.	A 17.2m pitching strip acts as a low flow control at this site. Some problems with low flow calibration due to subtle bed movements, but higher flow calibration observed to be stable at the present time.		Impermeable catchment draining eastern flanks of Snowdonia. Lower Palaeozoic formations and volcanics with some alluvial, boulder clay or glacial till cover in different parts of lower catchment. Steep, wet, upland catchment. Approximately half grassland and heath, the remainder forest and bare rock. Used for hill farming.
66025	Clwyd at Pont Dafydd	430.81	SJ0440974894	304409.0	374894.0	53°15'44.6454"N 3°26'04.3728"W	53.2624	-3.43455	Clwyd	Pont Dafydd	7.0	NRW	066025	66	1995-03-01		FL				true	false	false	false	false	false	false	false	false	false	false	false	false		1995-03-01	2014-09-30	6.637	0.503	1995-08-22	1995-08-22	54.2	2012-11-27	2012-11-27	1.07	2.19	3.89	15.9	23.5	0.58	7154	7154	100.0				6.5	49.5	195.2	354.5	553.9	901	899	0.1881	0.0358	0.7327	0.0208	0.0138	0.1542	0.1866	0.6163	0.0259	0.0164	0.2154	0.2027	0.5819		0.0945		0.5438	0.4	0.579	0.994	115.3	32.53	34.7	45.6	9.6	51.3	25.69	199	6	0.09	6.5	431.11	0.535	0.772	0.0577	0.0038			0.006	0.773	0.769			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Combined electromagnetic and rated section. Known issues due to siltation.	Nearby 66001 remains the primary gauging station due to issues with siltation.	Combined electromagnetic (low flows) and rated section (medium to high flows), data sets merged to give GDF. Substantial bypassing above mean annual flood level. Well is prone to siltation and blockage of the inlet pipe, particularly affecting low flows.	No daily flow data since September 2014 due to rating greatly over-estimating flows. EM gauge faulty from late 2011; flows from 2012 based entirely on rated section, low flow end of which is not well-defined due to paucity of gaugings.	Headwaters rise in Silurian shales and grits of Denbigh Moors and Clwydian Hills, then flow across generally confined Triassic Sandstone aquifer (with artesian heads over large areas). Superficial deposits; mostly Boulder Clay. Rural catchment with mixed land use: grouse moors to lowland dairy farming, some forested (mainly in SW).
67001	Dee at Bala	261.6	SH9408735721	294087.0	335721.0	52°54'30.4070"N 3°34'34.7330"W	52.90845	-3.57631	Dee	Bala	159.2	NRW	067001	67	1957-01-01		C US	186.0	30.0	10.0	true	false	false	false	false	false	false	false	false	false	false	false	false	SR	1957-10-01	2023-09-30	13.134	0.796	1962-03-18	1962-03-18	181.2	1960-12-04	1960-12-04	2.75	5.721	7.926	29.82	38.63	0.51	24106	23981	99.481				157.5	218.1	377.0	530.2	878.2	1845	1844	0.1414	0.0018	0.6528	0.1585	0.0051	0.112	0.0221	0.5342	0.2964	0.0035			1.0		0.0146	0.0168	0.2068	0.71	0.348	0.841	153.6	48.57	57.2	77.5	11.2	23.63	13.52	376	92	0.11	158.0	262.83	0.655	0.83	0.0467	0.0006			0.0012					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Hybrid site. Low flows controlled by Bala sluices.	Hybrid site consisting of crump weir and cross-path.	Hybrid site from June 2004 consisting of crump weir and cross-path US for flows >40 cumecs. Previously a triangular profile weir, 1:1 u/s and 1:3.5 d/s, calibrated by wading and cableway gaugings (with some hydraulic model tests also). Thought to drown at about bankfull flows. This structure replaced an original broad-crested weir in 1968. Low flows controlled by Bala sluices about 750m u/s. Llyn Celyn also in catchment.	Some missing data due to rebuild (summer 2004 and 2005).	Thin soil cover over mostly impermeable Lower Ordovician rocks. The rapi d response to rainfall is modified by the natural storage of Llyn Tegid. Mainly open moorland and sheep pastures with some forested areas.
67003	Brenig at Llyn Brenig outflow	20.2	SH9746553919	297465.0	353919.0	53°04'21.4643"N 3°31'54.7781"W	53.07263	-3.53188	Brenig	Llyn Brenig outflow	325.3	NRW	067003	67	1922-01-01		TP		13.4	15.8	true	false	false	false	false	false	false	false	false	false	false	false	false	SR	1922-03-01	2023-09-30	0.58	0.013	1975-08-29	1975-08-30	11.87	1931-09-04	1931-09-04	0.058	0.136	0.256	1.508	2.078	0.47	37104	36739	99.016				333.1	377.5	416.4	467.6	517.5	1301	1317	0.4182		0.1595	0.2445	0.0012	0.4206	0.0016	0.1727	0.239	0.0017			1.0			0.0693	0.5134	0.7	0.319	0.587	72.1	52.98	42.0	58.1	10.2	8.02	3.94	419	174	0.24	333.1	22.44	0.153	1.076	0.0182	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Sharp-edged weir gauging the controlled outflow of Llyn Brenig reservoir.	Sharp-edged weir, built in 1923.	Weir unchanged except extension of wing walls in 1975 allowing calibration to 30 cumecs. Before Aug 1975 flows above 15 cumecs estimated by rating curve extrapolation and hydrograph estimation because vertical drum level recorder truncated peaks.	Natural flow until Aug 1975, when impounding started: monthly naturalised flows since. GDFs sent to Measuring Authority, may be patchy and not up to date.	Open moorland. Catchment area revised in 1973 and increased by 0.8 sq km.	Llyn Brenig began impounding in 1975 and holds nearly four times annual average runoff. Pre-reservoir FARL is 0.983 and should be used with the pre-reservoir part of the records. Pre-reservoir FARL is 0.587.
67005	Ceiriog at Brynkinalt Weir	113.7	SJ2950337318	329503.0	337318.0	52°55'43.0344"N 3°03'00.5972"W	52.92862	-3.05017	Ceiriog	Brynkinalt Weir	64.4	NRW	067005	67	1952-01-01		CB	350.0	1.3	20.6	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1956-10-01	2023-09-30	3.118	0.141	1976-08-26	1976-08-26	48.1	1965-12-09	1982-01-03	0.414	1.08	1.93	7.22	9.94	0.53	24471	22175	90.617	1952-10-01		30.0	64.2	206.1	392.7	536.8	790.0	1250	1198	0.1389	0.0036	0.6496	0.191	0.005	0.1142	0.0589	0.5953	0.2256	0.0057		0.0615	0.9181	0.0203	0.0168	0.0886	0.079	0.51	0.462	1.0	186.5	40.83	41.3	55.4	10.3	30.38	17.72	386	99	0.18	64.9	111.72	0.336	0.786	0.023	0.0014			0.0013			1952..1996	1952-10-01..1997-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir, modified from original velocity-area in 1969. Natural flow regime.	Compound broad-crested weir modified from original velocity-area site in 1969. There was an eel pass on site from 2010-2012.	Cableway installed in mid-1970s, upgraded in 1997. Gravel removed annually from upstream apron of the weir to the gravel trap. Gravel trap emptied annually. High flows rated using cableway. Flows >20 cumecs regularly verified by gaugings. New rating following station refitting in September 1997. Multiple peak flow ratings applied across period of record. Gauged above AMAX3 with good fit to rating.	Data prior to 1969 suspect. Station closure explains missing data from Nov 1983 to Nov 1989. Station refitted June - Sept 1997; no flows available. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Majority of catchment is impermeable, with more permeable rocks in lower catchment to E. Ordovician and Silurian strata overlain in east by Carboniferous Limestone, Cefn-y-Fedw Sandstone and Coal Measures. River valleys are deeply incised. Soils are thin and peaty, supporting pasture for sheep grazing and woodland.	Natural to within 10% at Q95.
67006	Alwen at Druid	184.7	SJ0407743600	304077.0	343600.0	52°58'52.0633"N 3°25'48.5607"W	52.98113	-3.43016	Alwen	Druid	146.2	NRW	067006	67	1960-01-01		VA	100.0		14.7	true	true	false	true	false	false	false	false	false	false	false	false	false	SRPI	1960-10-01	2023-09-30	5.046	0.328	1975-07-03	1975-07-07	115.8	1964-12-12	1964-12-12	0.671	1.718	2.948	11.62	16.38	0.47	23010	23010	100.0	1960-01-12		78.14	145.9	257.8	365.7	444.5	627.6	1296	1305	0.1827	0.0027	0.6749	0.0935	0.0034	0.1858	0.0487	0.5922	0.1411	0.002			1.0			0.0344	0.4276	0.62	0.403	0.897	120.4	44.07	41.7	56.2	10.0	30.59	16.48	356	130	0.1	146.1	185.48	0.465	0.847	0.0381	0.0004			0.0005			1959		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Natural river section about 20m wide. Abstraction for PWS and industrial/agricultural use.	Natural river section about 20m wide.	Stable since last major flood in 1964. Bypassed during floods on left bank. Some minor revisions of rating from time to time. One peak flow rating applied across period of record, gauged above QMED with good fit to rating.	Flows greater than 60 cumecs are estimated. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Impermeable Palaeozoic rocks, with some patchy Boulder Clay in valleys, overlain by peat. Grassland, mostly upland pasture. Significant forest cover, mainly in N of catchment. Catchment area changed in 1976 to exclude Llyn Bran (0.8 sq.km).	Abstraction for public water supply and industrial/agricultural use. Reservoirs (Llyn Brenig and Alwen) control 15% of catchment.
67008	Alyn at Pont-y-Capel	227.1	SJ3352654047	333526.0	354047.0	53°04'46.1698"N 2°59'37.5994"W	53.07949	-2.99378	Alyn	Pont-y-Capel	37.3	NRW	067008	67	1965-01-01		CC		71.0	16.1	true	true	true	true	false	false	false	false	false	false	false	false	false	SEI	1965-06-01	2023-09-30	2.339	0.202	1976-08-24	1976-08-24	48.0	2000-11-06	2000-11-06	0.45	0.784	1.29	5.48	7.61	0.56	21306	21306	100.0	1965-05-29		21.68	37.6	103.2	232.4	354.3	562.9	901	917	0.16	0.0498	0.6649	0.0461	0.0636	0.1555	0.2137	0.5087	0.0614	0.0578		0.5262	0.1637	0.3101	0.1752		0.3115	0.41	0.591	0.99	108.2	29.84	35.0	45.5	10.1	51.92	25.24	233	63	0.18	37.6	225.65	0.442	0.865	0.048	0.0204	0.681	0.574	0.0291	0.817	0.567	1964..1965		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Asymmetrical compound crump weir. Flow affected by abstractions and returns.	Asymmetrical compound crump weir (two crests).	Divide wall was lowered in 1986 as debris regularly blocked the lower part, which may still occur. Some weed growth on low flow crest. Baffles installed on downstream slope of lower weir crest to assist with fish passage in 2011. Current meter calibration took place before and after. Weir drowned above 1m. Structure not thought to have been bypassed. High flow gaugings have been taken (>40 cumecs). One peak flow rating applied across period of record. Rating is gauged above QMED.	Flow data from 1 Jun 1965 reprocessed in 2013 following rating change, improving definition of low flows. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Ill-defined catchment boundary to NE and SE. Mixed geology, generally of moderate permeability; Carboniferous Limestone. Extensive glacial deposits over Coal Measures. Major loss of water from upper 70 sq.km. in limestone and mine drainage tunnels. Mostly grassland pasture, some woodland and urban development in low-lying areas to W.	Small reservoirs in catchment may affect flows. Abstractions for industry/agriculture. Loss of flow to mine drainage tunnels. Some effluent returns.
67009	Alyn at Rhydymwyn	77.8	SJ2040866737	320408.0	366737.0	53°11'30.2652"N 3°11'33.7788"W	53.19174	-3.19272	Alyn	Rhydymwyn	121.1	NRW	067009	67	1965-01-01		FL	73.0	26.3		true	true	true	true	false	false	false	false	false	false	true	false	false	N	1968-01-01	2023-09-30	0.602	0.0	1968-01-01	2023-09-29	28.2	2000-11-06	2000-11-06	0.0	0.0	0.007	1.97	2.89	0.32	20362	20330	99.843	1957-08-17		8.78	128.7	214.6	293.4	410.0	562.9	959	968	0.2124	0.0145	0.664	0.081	0.0073	0.2114	0.1232	0.5402	0.1101	0.0125		0.5807	0.4193		0.1015		0.1999	0.41	0.615	0.99	142.5	27.71	36.3	47.6	10.0	27.08	14.08	303	38	0.12	128.7	81.59	0.322	1.068	0.0328	0.0016			0.0016					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Trapezoidal flume in concrete trapezoidal channel. Substantial losses of river flow.	Trapezoidal flume in concrete trapezoidal channel. Site constructed in 1939. Intermittent flow regime.	Site is subject to rapid gravel accumulation, and so gravel is removed annually and after any mid-year high flow events. Gravel traps upstream of the flume. One peak flow rating applied across period of record. Rating valid from 0.05m stage. Rating shows good fit to gaugings up to 4.77m. Main level measurement is bridge mounted radar. Flow resumption subject to delay caused by float getting stuck in silt at the bottom of the stilling well. Bung added to inlet pipe to reduce data quality issues with shaft encoder.	Discharge frequently zero due to flow entering swallow holes in limestone upstream of site, hence rating only computes flows when stage exceeds 0.05m. Reprocessed flows for 2000-2008 loaded in 2012. Pre-1968 daily flows are very suspect, not held on the NRFA. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Impermeable Silurian rocks in W half, Carboniferous Limestone escarpment to E. Mainly grass pasture, extensive forest cover.	Swallow holes frequent between Maeshafn and Rhydymwyn; substantial losses of river flow through percolation to mine discharge tunnels. Flow is zero or near-zero approximately half of the time, with a marked difference between summer and winter flow duration curves.
67010	Gelyn at Cynefail	13.1	SH8424542049	284245.0	342049.0	52°57'47.7829"N 3°43'29.4633"W	52.96327	-3.72485	Gelyn	Cynefail	306.2	NRW	067010	67	1966-01-01		CC		35.5	20.4	true	true	false	false	true	false	true	false	false	false	false	false	false	N	1966-07-01	2023-09-30	0.713	0.016	1976-08-27	1976-09-03	16.1	2011-02-05	2011-02-05	0.067	0.16	0.282	1.85	2.87	0.25	20911	18722	89.532	1966-07-01		17.26	302.1	342.0	413.4	526.0	684.9	2044	2002			0.7295	0.2554			0.0035	0.4552	0.5323				1.0				0.2052	0.71	0.251	0.969	127.8	58.35	61.8	84.3	12.2	7.72	3.65	424	243	0.02	302.1	12.76	0.454	0.696	0.0321	0.0			0.0			1988..1989		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir. Station closed 1981-83 and 1984-87 for financial reasons; fully operational since 1988. Natural flow regime.	Compound Crump profile weir.	Seasonal weed growth is managed but it is difficult to clean heavy moss growth on flanking weirs. Combination of no cableway and poor access makes high flow gaugings difficult. Despite station closure and re-commissioning, homogeneous hydrometric performance; compound crump weir identical to that originally installed in 1960s. Two peak flow ratings applied across period of record, the most recent is valid from April 1972. Flows prior to 1968 calculated with a non-standard rating equation.	Station closed 1981-83 and 1984-87 for financial reasons; flows exist for intervening period, thought to be due to informal data collection. Fully operational since 1988. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Impermeable Lower Ordovician volcanics with occasional heavily indurated shales. Drift cover minimal. Boulder Clay in valley. Upland pasture, rural. Very little natural storage available.	Very responsive regime. Natural to within 10% at Q95.
67013	Hirnant at Plas Rhiwedog	33.9	SH946349	294600.0	334900.0	52°54'04.2117"N 3°34'06.3237"W	52.90117	-3.56842	Hirnant	Plas Rhiwedog	195.0	NRW		67	1967-01-01	1976-12-31	VA			16.0	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1967-08-01	1976-12-31	1.239	0.032	1976-08-26	1976-08-26	25.94	1968-03-23	1968-03-23	0.112	0.398	0.693	2.82	4.19	0.4	3441	3381	98.256	1967-07-10	1980-01-02	24.081	194.0	308.7	435.2	575.8	666.5	1762	1756	0.4586	0.0003	0.2869	0.2375	0.0032	0.478	0.005	0.2607	0.2556	0.0006			1.0					0.71	0.415	1.0	222.9	45.06	47.8	66.0	10.5	10.73	6.21	435	335	0.24	194.0	32.47	0.26	0.682	0.0182	0.0			0.0			1966..1979		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Rated section on a small steep stream that enters the Dee d/s of Bala Sluices. Natural flow regime.	Rated section on a small steep stream that enters the Dee d/s of Bala Sluices.	The control consists of a number of very large boulders. Gravel movements during large floods affect the rating. Bypassing of station at high flood flows. One peak flow rating applied across period of record. Gaugings match rating well.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Upland catchment, developed on impermeable Silurian geology. The south and west flanks of the catchment are comprised of the Wenlock series of rocks - mainly thick cross-bedded hard shales and coarser heavily indurated sandstones with very poor storage properties. The west flanks and the north parts of the catchment where the station is situated are formed of impermeable rocks with a very sparse drift cover. The catchment is very heavily wooded with rough pasture.	Natural to within 10% at Q95.
67015	Dee at Manley Hall	1013.18	SJ3482241459	334822.0	341459.0	52°57'59.4461"N 2°58'18.7933"W	52.96651	-2.97189	Dee	Manley Hall	25.4	NRW	067015	67	1937-10-01		CC		121.0	5.4	true	true	true	true	false	true	false	false	true	true	true	false	true	SRI	1937-10-01	2023-09-30	31.35	1.926	1937-10-05	1949-07-30	521.0	1964-12-14	1964-12-14	6.654	11.37	19.26	71.08	95.14	0.54	31411	31411	100.0	1970-02-04		226.5	28.1	157.5	347.0	499.3	878.2	1396	1367	0.1751	0.0123	0.6296	0.1487	0.01	0.145	0.0571	0.5509	0.222	0.009		0.0448	0.893	0.0621	0.0232	0.0222	0.278	0.55	0.431	0.934	154.8	42.69	44.2	59.4	10.2	93.29	56.75	339	85	0.09	28.1	1008.74	0.741	0.963	0.0457	0.0025			0.0043					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Asymmetrical compound Crump profile weir.	Asymmetrical compound Crump profile weir. Replaced 67002 Erbistock Rectory in order to provide more accurate measurement of low-medium flows on the river Dee. Site used for flood warning.	Structure comprises two crump weirs (low/high flow weirs 15/20m wide respectively). Low flow weir below < 12 cumecs. Drowns at flows above 200 cumecs, but not bypassed (due to rock outcrop on left bank upstream of the high flow weir, and revetments on right bank). Refurbished in 1997, with further work in 2014 to replace weir crests, install fish counter and reinforce banks. Multiple peak flow ratings applied across period of record. A number of high flow gaugings (current meter) confirm rating across most of the range. Cableway used for high flow gaugings, ADCP boat during low flows. All flows contained in bank.	Daily flow data from 1937 to 1970 are from 67002 Erbistock Rectory. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Discontinuity in low flows in 1966. AMAX data at Erbistock Rectory are not presented; they do not form a statistically continuous time series with Manley Hall and have FEH Neither suitability.	Predominantly impermeable Palaeozoic rocks and volcanics. Shales, slates, mudstones and Palaeozoic grits, and to a lesser extent extrusive igneous and Carboniferous rocks. Mostly grassland (upland pasture to lowland livestock farming). Some forest, significant upland heath.	Abstraction for public water supply and industrial/agricultural uses. Low flows maintained by releases from major river regulating reservoirs, Celyn and Brenig. AMAX series is impacted by reservoir management. Flood attenuation on the lower Dee flood plain is notable.
67017	Tryweryn at Llyn Celyn outflow	59.9	SH8807739939	288077.0	339939.0	52°56'42.4604"N 3°40'01.5456"W	52.94513	-3.6671	Tryweryn	Llyn Celyn outflow	249.3	NRW	067017	67	1969-01-01		CB	130.0	14.3	34.7	true	false	false	false	false	false	false	false	false	false	false	false	false	SRPH	1969-01-01	2023-09-30	3.758	0.04	1981-04-13	1981-04-13	18.0	2008-10-21	2008-10-21	0.374	0.855	3.43	8.627	10.36	0.42	19996	19991	99.975				248.6	329.0	420.9	554.6	850.0	2011	2013	0.0481	0.002	0.6004	0.2716	0.0082	0.0484	0.0012	0.3169	0.57	0.0002			1.0			0.0283	0.2008	0.71	0.264	0.745	144.9	57.68	63.5	87.5	12.2	13.89	7.81	432	68	0.03	249.5	60.05	0.623	0.945	0.0475	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir. Used to measure outflow and overspill from Llyn Celyn.	Compound broad-crested weir measuring controlled outflow and overspill from Llyn Celyn regulating reservoir.		Missing data on the 6th of November 2018 due to the flows being below the rating limit stage of 0.000m during this period (Welsh Water emptied the basin for weed clearance).	Impermeable catchment, predominantly Ordovician with Upper Cambrian shales, slates and mudstones in the SW. Rural, upland catchment supporting sheep grazing.
67018	Dee at New Inn	53.9	SH8735330798	287353.0	330798.0	52°51'46.2247"N 3°40'28.8990"W	52.86284	-3.67469	Dee	New Inn	163.5	NRW	067018	67	1969-01-01		FVVA	38.0		18.9	true	true	false	true	false	true	true	false	true	true	false	true	true	HN	1969-07-01	2023-09-30	3.14	0.044	1976-08-23	1976-08-23	66.23	2011-02-05	2011-02-05	0.226	0.751	1.419	8.036	12.09	0.27	19815	19814	99.995	1968-12-10		78.525	164.2	220.2	397.8	530.6	840.8	1932	2022	0.2453	0.0007	0.5728	0.1679	0.0033	0.2107	0.0156	0.4552	0.3178	0.0003			1.0		0.0184	0.0404	0.1196	0.71	0.312	1.0	150.5	51.9	59.4	78.8	11.2	14.77	7.22	387	85	0.17	164.2	53.38	0.639	0.722	0.0483	0.0001			0.0004			1968..1998	1969-01-20..1999-04-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V concrete ford located d/s of confluence with Afon Lliw. Natural flow regime. Data from site is used operationally for flood alleviation, flood warning and a daily naturalization indicator.	Flat-V concrete ford. Located d/s of confluence with Afon Lliw. Data from site is used operationally for flood alleviation, flood warning and a daily naturalization indicator for upper Dee flows.	Station located on a bend. Gravel removed annually from upstream of square concrete weir blocks to 25m upstream of confluence of River Dee with the Lliw. Out-of-bank flows occur almost annually and station is significantly by-passed above around 2.2m. Calibration by current meter. Different peak flow ratings are applicable pre and post weir construction (1999). Current rating in good agreement with check gaugings to bank full but does not account for significant bypass. The original control was based on a rough stone paved ford with stepping stones upstream to provide sensitivity at low flows. Between 01/04/1998 & 01/04/1999 it was formalized into a shallow flat-V concrete ford with square blocks cast on the upstream base to mimic the adjusted configuration.	Data during construction (01/04/1998 - 01/04/1999) was infilled based on nearby station 67010 R. Gelyn at Cynefail. Data pre-1979 can not be confirmed due to lack of 15 minute data. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Ratings reviewed in 2022 and data reprocessed from 1982.	Upland catchment. Mainly impermeable Ordovician rocks with minor superficial deposits - otherwise no water-bearing strata. Land use is mostly rough upland pasture and extensive forest.	Rapidly responding. Natural to within 10% at Q95. Hydropower scheme implemented on Lliw.
67023	Golborne Brook at Tattenhall	17.7	SJ4790959196	347909.0	359196.0	53°07'38.5366"N 2°46'47.7464"W	53.12737	-2.77993	Golborne Brook	Tattenhall		EA-GMMC	067023	67	1998-11-10		FL				true	false	false	false	false	false	false	true	false	false	false	false	false	RI	1998-11-10	2023-09-30	0.091	0.004	2006-07-19	2011-08-23	5.252	2021-01-20	2021-01-20	0.008	0.018	0.036	0.225	0.355	0.38	9091	9091	100.0				21.5	33.3	57.4	135.5	223.4	736	716	0.0579	0.3056	0.5962	0.0022	0.0362	0.0871	0.3586	0.5121	0.0014	0.0372	0.9982			0.0018			0.9115	0.34	0.499	0.963	59.1	36.03	30.3	41.1	9.8	9.85	4.77	74	324	0.38	21.5	16.57	0.562	0.667	0.0942	0.0125	0.538	0.613	0.017	0.722	0.493			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A trapezoidal flume station in a mainly rural catchment.	Trapezoidal flume with a maximum width of 6m. Note that number 67023 previously associated with proposed stations at Fuller's Moor and Barnhill but neither of these was ever built.		Between Aug and Oct, flows augmented by 3 l/s.	Permo-Triassic Sandstone (Sherwood) overlain by glacial till. Rural in character, predominant land use is mixed farming.	Station located within a sewage treatment works which discharges d/s of the station and is not though to influence flows at the station.
67025	Clywedog at Bowling Bank	98.6	SJ3958048249	339580.0	348249.0	53°01'41.1595"N 2°54'08.3758"W	53.0281	-2.90233	Clywedog	Bowling Bank	14.0	NRW	067025	67	1976-01-01		C VA			12.6	true	false	false	false	false	false	false	false	false	true	false	false	true	GE	1976-01-01	2023-09-30	1.31	0.201	1995-08-25	1995-08-25	20.18	1976-09-25	1976-09-25	0.322	0.583	0.834	2.752	3.891	0.58	17440	16802	96.342				14.4	48.0	111.7	386.4	554.2	860	851	0.0719	0.1341	0.5034	0.1024	0.1808	0.0629	0.239	0.4218	0.1018	0.1716	0.1269	0.1534	0.03	0.6897	0.2827		0.5446	0.51	0.53	0.989	62.0	35.32	33.8	42.3	9.9	27.47	14.33	164	95	0.45	14.5	103.61	0.55	0.831	0.0659	0.0681	0.742	0.877	0.0983	0.851	0.872			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Simple Crump profile weir. Runoff influenced by groundwater abstraction/recharge.	Simple Crump profile weir, 6m wide. Removed from peak flows dataset in September 2019 (WINFAP Files v8). At high flows water inundates the hut. Eel pass installed in 2022, which has no impact on the ratings.	The channel frequently blocks with debris from fallen trees/branches (the river banks are covered with thick vegetation and tree growth) and there is significant weed growth in the channel. At 1.13 cumecs the weir becomes non-modular. A road bridge 150 m d/s of gauging station can act as a constriction, particularly during high flows. Water level is recorded at head and tail. Mine drainage and abstraction in upper catchment. Until 7/10/1992, 50% of low flow was treated effluent from Wrexham; after this date the discharge was piped directly to the Dee. Some works carried out in 2002/3 to attempt to contain the peak flows. The June 2007 event was almost fully contained. Before 2002/3 works, thought to bypass from approx the ten-year event.	Jun-Aug 2013 levels/flows affected by commissioning of new water treatment works in catchment. Data removed from 01/01/2021 from NRFA due to due to prolific weed growth and backwater effects.	Mainly Carboniferous strata, mostly of moderate permeability, with superficial deposits, Boulder Clay, sands and gravels. Mixed farming (pasture predominates), substantially urbanised. Much mining in the catchment.	Runoff influenced by groundwater abstraction/recharge.
67027	Dee at Ironbridge	1674.1	SJ4176460023	341764.0	360023.0	53°08'03.0020"N 2°52'18.8515"W	53.13417	-2.8719	Dee	Ironbridge	4.7	NRW	067027	67	1993-11-01		US				true	false	false	false	false	false	false	false	false	false	false	false	false		1993-11-04	2023-09-30	38.062	8.07	2010-09-03	2010-09-03	311.0	2000-11-07	2000-11-07	9.68	13.3	22.25	94.0	123.0	0.57	10923	10819	99.048				3.8	53.3	262.8	462.4	878.2	1165	1143	0.1429	0.0678	0.6343	0.1025	0.0351	0.1222	0.1314	0.5553	0.1491	0.0308	0.1147	0.1158	0.5637	0.2058	0.0977	0.0139	0.3976	0.45	0.473	0.956	119.1	39.04	39.5	52.3	10.0	142.72	79.07	258	69	0.13	3.8	1669.34	1.112	0.702	0.0764	0.0115	0.671	0.511	0.0165	0.809	0.528			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station uses US to derive flow. Flows are influenced by abstractions and tides.	Originally a 45 metre rated section. Converted to cross-path US during 1994.	Good throughout the range up to approximately 6.8m (200 cumecs). Above 6.8m goes out of bank on right bank and recirculates; in extreme events site can be bypassed on both banks (on left bank via serpentine). Managed weed growth.	Data missing during Oct 2000 event, which was the highest on record at Chester (67033).	Upper catchment impermeable Lower Palaeozoic rocks with intermittent Drift cover. Below Llangollen, River Dee crosses Carboniferous L'st escarpment and outcrops of Cefn-y-Fewd sandstone, Coal Measures and Sherwood S'st, providing many artesian areas in lower catchment. Principally grassland (upland pasture to lowland livestock farming). Some forestry, significant upland heath.	Site is tidally influenced and abstractions mean that flows are about 6 cumecs higher than d/s 67033.
67028	Ceidiog at Llandrillo	36.5	SJ0348437154	303484.0	337154.0	52°55'23.1448"N 3°26'13.4269"W	52.9231	-3.43706	Ceidiog	Llandrillo	155.1	NRW		67	1978-01-01	2000-12-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1978-08-01	2000-12-31	1.435	0.044	1990-09-15	1990-09-17	19.91	2000-11-05	2000-11-05	0.12	0.404	0.804	3.467	4.756	0.47	8189	5202	63.524				153.9	254.5	438.4	643.1	826.2	1556	1501	0.1756		0.607	0.2117	0.0011	0.1499	0.015	0.4947	0.34	0.0004			1.0				0.0745	0.51	0.355	1.0	190.4	49.31	42.3	58.8	10.2	9.35	5.6	451	325	0.28	153.9	36.02	0.186	0.591	0.0129	0.0006			0.0008					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Level-only station from 2001.	Velocity area station. Station converted to a level-only site in 2001.	Utilises a series of gravel traps as a control for low and medium flows only (flows exceeding 1 cumec based on rating extrapolation and should be treated with extreme caution).		Impermeable Ordovician mudstones and shales with volcanics which provide rapid runoff rates and low baseflows. Mostly rough grazing, some woodland.
67029	Trystion at Pen-y-felin Fawr	12.3	SJ06634053	306630.0	340530.0	52°57'14.3687"N 3°23'28.5237"W	52.95399	-3.39126	Trystion	Pen-y-felin Fawr	254.5	NRW		67	1977-01-01	1986-12-31	TP			9.3	true	false	false	false	false	false	false	false	false	false	false	false	false	SP	1977-06-01	1986-12-31	0.314	0.001	1983-08-13	1983-08-15	3.478	1979-03-25	1979-03-25	0.024	0.088	0.2	0.722	1.03	0.43	3501	3172	90.603				261.5	350.0	466.7	561.8	631.6	1473	1264	0.2045		0.2876	0.5067		0.2063		0.1391	0.6534				1.0			0.0011		0.51	0.373	0.971	181.9	48.64	37.4	50.5	9.9	6.8	3.84	459	320	0.22	261.5	12.56	0.069	0.812	0.0053	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Site measures flows from small Cynwyd reservoir just upstream.
67033	Dee at Chester Suspension Bridge	1816.8	SJ4102065973	341020.0	365973.0	53°11'15.2266"N 2°53'02.8350"W	53.18756	-2.88412	Dee	Chester Suspension Bridge	10.0	NRW	067033	67	1994-01-01		US				true	false	false	false	false	false	false	false	false	false	true	false	false	SRP	1994-01-06	2013-03-13	34.078	3.453	1995-12-18	1995-12-18	306.6	2000-11-07	2000-11-07	5.13	9.14	18.4	89.78	119.0	0.5	7007	7007	100.0				2.6	32.3	241.9	456.9	878.2	1132	1110	0.1358	0.0883	0.6282	0.0951	0.0364	0.1166	0.1522	0.551	0.1383	0.031	0.1745	0.1074	0.5225	0.1956	0.0906	0.0128	0.4389	0.43	0.471	0.959	112.8	38.92	38.8	51.3	10.0	152.12	83.35	242	61	0.1	2.6	1800.75	1.115	0.697	0.0819	0.0119	0.666	0.544	0.0169	0.808	0.566			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic gauge. Flow influenced by abstractions.	Ultra Sonic gauge. River channel approx. 40m wide. Superseded 67020 (non-standard weir, tidally affected) approx. 300m d/s; some data (1974-86) also available for nearby station 67026.	Ultrasonic gauge, 6 path (paths 5 and 6 used for high flows) installed in 1994. High flow performance under review.	No daily flow data since September 2013 due to issues with ultrasonics.	Upper catchment impermeable Lower Palaeozoic rocks with intermittent superficial deposits. Below Llangollen, river crosses Carboniferous Limestone escarpment and outcrops of sandstone; many artesian areas in the lower catchment. Upper catchment is rough grazing, with some patches of forest; Lower catchment is mixed farming.	Abstractions mean that flows are about 6 cumecs lower than u/s 67027.
68001	Weaver at Ashbrook	622.0	SJ6717163507	367171.0	363507.0	53°10'03.5735"N 2°29'33.0951"W	53.16766	-2.49253	Weaver	Ashbrook	16.3	EA-GMMC	680504	68	1937-01-01		VA	120.0		11.6	true	true	true	true	false	true	false	true	false	false	true	true	false	PGE	1937-10-01	2023-09-30	5.725	0.394	1976-08-17	1976-08-17	84.95	1946-02-09	1946-02-09	1.246	2.29	3.409	12.7	18.41	0.54	31411	31197	99.319	1937-08-01		46.677	17.2	45.3	75.0	121.0	231.8	766	732	0.0502	0.2431	0.6344	0.0006	0.068	0.0526	0.3165	0.5673	0.003	0.0543	0.0693		0.0462	0.8845	0.2258		0.698	0.34	0.513	0.955	29.6	32.72	29.8	39.4	9.5	64.77	33.03	79	13	0.07	17.2	622.68	1.185	0.977	0.1575	0.0231	0.723	0.759	0.0273	0.819	0.76	1936		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard shallow V weir draining a catchment that includes the towns of Nantwich and Crewe but is largely rural.	Opened in 1937 as a velocity area station which suffered from a mobile bed and weed problems. Station was relocated 400m downstream in August 1978 with a non-standard timber shallow V weir as bed control, 16.5m wide located just u/s of a bend in the river. There was a brief overlap between the stations.	Cableway present. Mobile control. Weir drowns at relatively low flows. Bypassing on right bank above 3.5m; inundates adjacent fields, but not regularly. Prone to weed and algal growth, and sedimentation. There have been significant changes to the channel, including works immediately upstream of the station, and collapse of the right bank during the winter 1992/93 with channel improvements some years later. Peak flow ratings derived from gaugings, extrapolated when overtopping the right bank. Multiple ratings applied to reflect changes in bank profile, maintenance, sedimentation and downstream conditions. Early gaugings lost; rating accuracy unknown. Flood Studies Report grade A2.	Data before 1972, particularly low flows, are unreliable. Revised daily flow data from 15/08/1979 to 12/2008 loaded in 03/2010: new values are lower, especially at high flows - some reduced by over 25%; annual runoff typically reduced by 15%; max GDF unchanged, as it was in 1946. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	A generally low relief catchment below the headwaters with steep upper reaches. Mixed geology, consisting of Keuper Marl overlain with mostly post-glacial deposits. Lower Lias shales in the south with Coal Measures, Permian Sandstones and Bunter Pebble Beds in the east; mostly low permeability with extensive Drift cover. Land use is largely agricultural but catchment includes Nantwich and parts of Crewe.	The flat catchment tends to produce sluggish hydrographs, though some rise rapidly. High flows can be protracted, with recession delayed.
68002	Gowy at Picton	156.2	SJ44277141	344270.0	371410.0	53°14'12.4121"N 2°50'11.1854"W	53.23678	-2.83644	Gowy	Picton	3.1	EA-GMMC		68	1949-01-01	1980-01-01	VA	80.0			true	false	false	false	false	false	false	false	false	false	false	false	false	PG	1949-10-01	1976-05-31	1.229	0.09	1971-04-22	1971-04-22	30.64	1976-02-12	1976-02-12	0.255	0.481	0.733	2.67	3.744	0.51	9740	9710	99.692				5.6	17.6	41.4	97.8	218.0	724	729	0.0636	0.2907	0.5965	0.0001	0.0488	0.06	0.4362	0.4746	0.0003	0.0275	0.7886			0.2114	0.1006	0.0039	0.8058	0.35	0.538	0.994	33.7	32.24	28.8	39.1	9.9	34.16	14.58	52	294	0.17	5.6	149.51	1.037	0.885	0.1479	0.012	0.512	0.927	0.0166	0.684	0.916			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A vertical-area station which was closed in 1979.	Natural section vertical-area station calibrated by gaugings.	Severe weed growth problems, variable in intensity from year to year.
68003	Dane at Rudheath	407.1	SJ6675871800	366758.0	371800.0	53°14'31.8312"N 2°29'58.4541"W	53.24218	-2.49957	Dane	Rudheath	13.2	EA-GMMC	681210	68	1949-01-01		FVVA	63.0		10.8	true	true	false	true	false	false	false	true	true	false	false	false	false	SPGEI	1949-10-26	2023-09-30	5.264	0.386	1996-07-20	1996-07-20	101.3	2021-01-21	2021-01-21	0.991	2.08	3.259	11.6	16.3	0.52	27003	26868	99.5	1949-05-17		55.691	11.6	43.2	94.7	350.9	556.7	877	853	0.0662	0.1609	0.628	0.0286	0.1095	0.0637	0.2366	0.5535	0.0582	0.0825	0.0009	0.2491		0.75	0.2333	0.0	0.5955	0.4	0.459	0.968	59.9	35.55	32.1	41.5	9.9	74.33	36.96	144	281	0.25	13.1	412.46	1.105	0.73	0.1256	0.0362	0.72	0.845	0.0479	0.83	0.815	1948..1978	1949-05-17..1979-01-31	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir on the Dane, station affected by water backing up from downstream. Includes data from earlier velocity-area station 10m upstream.	Opened as a velocity-area station in 1949, and rebuilt in 1957. Replaced in February 1979 by a Flat-V weir, 14m wide with truncated downstream slope. Both stations downstream of high road bridge, and ran simultaneously for a while.	The original Velocity-area station suffered from changes in bed level due to mobile control which required several changes to rating with uncertainty as to applicability to high flows and to periods over which ratings applied. The current weir drowns at approx 1m. Cableway installed 01/1982; since removed. Gauged by wading or from u/s bridge. High flows regularly inundate fields over left bank (3.6m). Suffers from variable backwater which may affect the peak flow rating, due to backing-up from the Weaver but possibly also affected by changes in the maintenance regime; a downstream level recorder was installed in September 2002. Multiple peak flow ratings applied across period of record developed from in-bank current meter gaugings. From 1979 uses ratings derived from gaugings for the Flat-V weir, with hydraulic modelling applied to derive the top limb. Flood Studies Report grade B.	Gauged daily flow data should be treated with caution prior to 02/1979. Low flows poor before 06/1957 (changing bed levels and cross section due to large amounts of silt). Summer 1976 flows might be overestimated. No daily flows available during weir construction (11/1978 to 02/1979). Re-rated data for 09/2000 to 12/2009 loaded onto NRFA 10/2010; highest gauged daily flows reduced by around 10%. Although peak flows are presented for the period of record, flows before 1979 are marked as rejected and should not be used in flood analyses. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Headwaters in the southern Pennines but, for most part, river meanders over Cheshire plain with varying depths of post glacial drift overlying Triassic sandstone and Upper Triassic Keuper marl (mostly low permeability). In the east are Carboniferous Limestones, sandstones and grits. Alluvium in the valley bottoms. Mixed land use with appreciable urban development in the lower catchment. No catchment changes known.	Responsive regime. Headwater transfers to Rudyard and Bosley reservoirs, which feed the Trent and Mersey canal. Many artificial influences within the catchment.
68004	Wistaston Brook at Marshfield Bridge	92.7	SJ67415520	367410.0	355200.0	53°05'34.8196"N 2°29'17.1751"W	53.09301	-2.4881	Wistaston Brook	Marshfield Bridge	30.1	EA-GMMC	680403	68	1957-01-01		VA	14.0		12.14	true	false	false	false	false	false	false	true	false	false	false	false	false	PGEI	1957-10-01	2023-09-30	0.917	0.049	2018-07-19	2018-07-19	21.64	2019-10-26	2019-10-26	0.221	0.43	0.631	1.784	2.566	0.58	24106	24017	99.631				30.6	50.8	75.5	128.1	231.8	763	730	0.0446	0.2427	0.5261	0.0023	0.1818	0.0421	0.3516	0.4123	0.0028	0.1866	0.1238			0.8762	0.294		0.6802	0.35	0.55	0.967	31.8	31.51	29.7	39.4	9.4	22.72	11.22	82	295	0.28	35.1	90.09	1.017	0.881	0.1456	0.0852	0.796	0.631	0.0929	0.866	0.652			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A flat V piled weir station that was moved upstream in Sept 1972 due to an unstable control.	Initially a 6m wide section on a bend with chart records from 1955, but early data in particular are poor. Low flow control installed 1978 and modified to an informal Flat V piled weir in May 1980. Bank re-profiling work was undertaken in 2008 on the left bank due to slippage.	Silt accumulates behind weir in times of low flow. Flows above 0.7m less reliably measured. Bankfull at 2.3m.		Below headwaters geology is generally of low permeability (Mercia mudstone with extensive Drift cover). Land is primarily agricultural but central and southern parts of Crewe dominate lowest portion of the catchment.	Responsive regime with artificial influences evident during periods of low flow.
68005	Weaver at Audlem	207.0	SJ6525443040	365254.0	343040.0	52°59'00.8375"N 2°31'08.3370"W	52.98357	-2.51898	Weaver	Audlem	44.7	EA-GMMC	680301	68	1952-01-01		TPVA	18.0	0.3	11.6	true	true	true	true	false	false	true	true	true	true	true	false	true	PGE	1953-10-01	2023-09-30	1.674	0.039	1976-08-23	1976-08-23	40.02	2019-10-26	2019-10-26	0.231	0.494	0.852	4.13	5.649	0.54	25567	25110	98.213	1936-06-19		14.193	44.7	67.8	86.2	111.2	221.3	756	719	0.049	0.2541	0.6694	0.0001	0.0232	0.0512	0.2848	0.6419	0.0026	0.0128	0.0274		0.1427	0.8299	0.2075		0.7709	0.34	0.502	0.95	27.4	34.29	29.6	38.6	9.4	29.37	14.86	89	63	0.08	46.2	201.38	1.1	1.021	0.1593	0.0052	0.561	0.857	0.0074	0.74	0.89			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with thin-plate weir draining a predominantly rural catchment on the Cheshire Plain.	Velocity area station (from 1936) with rectangular thin-plate low flow weir with broad-crested flanking crests (from 1951). Level recording installed downstream of the weir in 1951, moved upstream of the weir in March 1969.	At high flows, the weir drowns, flows spill out of right bank at approx 2.5m, and the rating is insensitive. Spot gaugings used to derive rating for low to medium flows. Some scatter in gaugings. Changes in channel maintenance are thought to have reduced capacity over the years. One peak flow ratings applied; before and after October 1969. Cableway present. Flood Studies Report grade B.	Gauged daily flows during the period when level measurement was downstream of the weir (1951-1969) are poor, with no reliable rating. Flows from 1973 onwards reprocessed in 2002, with substantial reduction in high flows. Revised data from 1/1977 to 12/2008 loaded in 03/2010; annual runoff typically 7% lower. Peak flows data available from October 1969. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	A mostly flat catchment in the Cheshire Plain developed on post glacial deposits over keuper marl, Lias clay and sand; largely impermeable. In the extreme north-west, Triassic sandstones are exposed. The catchment is widely covered with glacial deposits of clays, sands and gravels. Land use is predominantly rural, consisting of mixed farmland with only a few villages. No catchment changes known.	Minor groundwater abstractions and returns.
68006	Dane at Hulme Walfield	150.0	SJ84506438	384500.0	364380.0	53°10'34.6687"N 2°14'00.0880"W	53.1763	-2.23336	Dane	Hulme Walfield	66.4	EA-GMMC	681007	68	1953-01-01	1986-04-03	VA	57.0		16.7	true	true	false	true	false	false	false	false	false	false	false	false	false	SPGI	1953-10-01	1984-12-31	2.388	0.042	1975-11-14	1975-11-14	64.85	1965-12-09	1965-12-09	0.411	0.976	1.416	5.38	7.362	0.48	11415	9191	80.517	1953-08-14	1986-04-03	53.477	69.3	122.1	241.4	434.3	556.7	1050	1017	0.076	0.0455	0.7287	0.0736	0.0638	0.0827	0.0419	0.6675	0.1506	0.0537		0.6625		0.3375	0.0501	0.0001	0.5037	0.5	0.417	0.979	113.8	39.12	36.5	45.8	10.4	36.4	20.31	261	261	0.21	69.3	151.42	0.638	0.698	0.0488	0.0246	0.733	0.391	0.0293	0.848	0.411	1952..1985		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with informal shallow V weir. Station closed 1986.	A velocity area station, opened August 1953. Station re-built late 1978 and 1979, and re-commissioned in August 1979 with an informal shallow V weir, 14.1 m wide, new hut and cableway. Station closed 1986. Catchment similar (only 5% larger) to Congleton Park (68018).	No known bypassing. Two peak flow ratings applied across period of record, before and after August 1979 when the informal V weir was constructed. Flood Studies Report grade B.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	A mixed rural and urban catchment. The north-east and south-west are made up of Millstone Grit and shale, overlain by coal measures. In the centre, the Yoredale series of shale and sandstones are exposed with Upper Triassic Keuper Marls in the west. The area is partly covered with glacial clays, sands and gravels. Alluvium occupies the bottom of the valleys. No catchment changes known.	Several canal reservoirs in the upper reaches. Major transfer to Lake Rudyard, which feeds the Trent and Mersey canal.
68007	Wincham Brook at Lostock Gralam	148.0	SJ6970075722	369700.0	375722.0	53°16'39.3774"N 2°27'21.1066"W	53.2776	-2.45586	Wincham Brook	Lostock Gralam	16.3	EA-GMMC	681213	68	1962-01-01	2018-07-11	VA	14.5		7.6	true	true	false	true	false	false	false	false	false	false	false	false	false	PGEI	1962-10-01	2018-07-10	1.867	0.031	1992-09-11	1992-09-11	44.5	1977-02-11	1977-02-11	0.362	0.73	1.17	3.85	5.89	0.52	20372	20131	98.817	1960-09-30	2018-07-11	20.78	16.8	38.7	62.9	131.2	183.7	812	818	0.1207	0.2657	0.4835	0.0038	0.1165	0.0801	0.4283	0.4471	0.0051	0.0304	0.0394			0.9606	0.3458	0.0157	0.6199	0.39	0.508	0.942	22.6	32.69	30.5	39.7	10.2	32.66	14.94	73	235	0.19	16.8	148.34	1.23	0.884	0.1816	0.0115	0.527	0.949	0.0204	0.698	0.986			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station affected by siltation which therefore has multiple historical ratings and was closed for daily and peak flow measurement in 2018. No replacement.	A velocity-area station from October 1960, until an informal trench pile weir was installed in April 1982. Siltation caused reversion to open channel over time. Stilling well replaced by external pressure transducer in June 2010. Station improvement works in 2013. Closed from peak flows dataset in August 2022 (WINFAP Files v11).	Cableway present. Extensive bypassing above approx 2.5m. Site experiences serious siltation which gives wide scatter in gaugings at low flows (consistently 60% since January 2009), and scour during high flow events, although the higher gaugings are more consistent. The site has an unstable bed and suffers from a build of silt so has to be pumped out regularly to prevent blockage. Siltation led to control being submerged and became a more serious problem after 11/2006 as the channel naturally realigned following stabilisation works on the left bank. The inlet pipe was extended in February 2008 to help combat siltation. Multiple ratings, based on gaugings, necessary due to the siltation. For peak flows, the several alternative ratings have been rationalised to before and after the weir in 1982. Flood Studies Report grade B.	No POT data are presented for this station as they have no non-modular flow correction applied whilst AMAX data have been corrected. Daily mean flows are at times greater than AMAX flows partly because they are not corrected. Also, the daily flow rating history extrapolation differs from that of peak flows; daily mean flows before 01/04/1982 above 20 cumecs are likely overestimated. Period of missing data in 2013 due to station improvement works. No data held after 2018. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Linear, low relief catchment with mudstones and saliferous beds of the Mercia Mudstone blanketed by Boulder Clay and glacial sands and gravel. Rural, except for SW Knutsford. Drains an elongated area on the northern edge of the Cheshire plain, containing many meres and ornamental lakes. No catchment changes known.	Minor abstractions and discharges.
68010	Fender at Ford Lane	18.4	SJ28088801	328080.0	388010.0	53°23'02.4639"N 3°04'57.8518"W	53.38402	-3.08274	Fender	Ford Lane	5.5	EA-GMMC	685518	68	1973-01-01	1981-09-01	FL				false	true	false	true	false	false	false	false	false	false	false	false	false																				1973-04-25	1981-09-02	4.753	9.4	20.0	45.2	67.9	102.2	783	774	0.0589	0.2187	0.3318		0.3907	0.0356	0.3394	0.2248		0.3999	0.9689			0.0311			0.7505	0.38	0.432	0.999	29.0	37.1	30.0	38.9	10.4	8.86	4.02	45	11	0.21	9.8	18.0	0.631	0.872	0.1024	0.2004	0.851	0.836	0.2078	0.885	0.885	1972..1973		cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound trapezoidal flume. Station closed 1981.	Compound trapezoidal flume with vertical sides. Station opened in 1971 and closed 1981.	One peak flow rating applied across period of record, based on theoretical for flume. No gaugings are available to validate rating.	Gaps in POT data caused by significant and recurrent vandalism. Data from Oct 1972 to Oct 1974 rejected as timing and magnitude both suspect. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	A heavily urbanised, low relief catchment draining parts of Birkenhead and Heswall on the Wirral. Underlying geology is primarily sandstone. No catchment changes known.	Some groundwater abstractions and several small discharges.
68011	Arley Brook at Gore Farm	36.5	SJ69647992	369640.0	379920.0	53°18'55.2053"N 2°27'25.7964"W	53.31533	-2.45717	Arley Brook	Gore Farm	39.4	EA-GMMC	681212	68	1973-01-01	1982-04-01	FL				true	true	false	true	false	false	false	false	false	false	false	false	false	N	1975-01-01	1982-03-31	0.455	0.003	1976-08-17	1976-08-17	17.64	1979-01-01	1979-01-01	0.017	0.089	0.196	1.123	1.709	0.33	2647	2038	76.993	1973-10-29	1982-04-02	6.092	42.8	52.5	60.3	71.9	82.1	801	831	0.1416	0.3403	0.3242	0.0103	0.1733	0.0584	0.5754	0.3349		0.0291				1.0	0.0137	0.0648	0.8399	0.37	0.437	0.998	12.4	35.52	31.5	39.2	10.8	13.3	7.32	61	121	0.2	43.2	33.76	1.758	0.907	0.2498	0.0112	0.512	1.324	0.0212	0.641	1.437	1978..1980	1979-06-30..1981-02-28	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Critical depth flume installed for experimental catchment. Station closed in 1982.	Critical depth trapezoidal flume, throat width 0.4m and height 1.35m. Installed as a component of an experimental catchment scheme. Station opened in January 1973 and closed 1982.	Although there is a reasonable gradient downstream, backwater may occur if the bridge 100m downstream becomes blocked. Design capacity 7 cumecs in modular range, rated by gaugings above this, although no record of gaugings found. One rating applied across period of record. Theoretical rating until 1.08m.	Daily flows are not presented for use and peak flows are rejected from 29 December 1978 to 6 January 1979 and 30 June 1979 to 28 February 1981 as the pen trace tended to fail during events and peaks were guessed. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Low relief catchment between Northwich and Warrington on Boulder Clay covered by Keuper Marl. N boundary may be partially formed by the M56 embankment. Entirely rural but with M6 and M56 runoff. No catchment changes known.	A few minor discharges.
68015	Gowy at Huxley	49.0	SJ4965962434	349659.0	362434.0	53°09'23.9164"N 2°45'15.4405"W	53.15664	-2.75429	Gowy	Huxley	16.8	EA-GMMC	684014	68	1973-01-01		VA			17.8	true	false	false	false	false	false	false	false	false	false	false	false	false	PG	1979-05-04	2023-09-30	0.556	0.046	1996-07-19	1996-08-05	18.5	2007-06-25	2007-06-25	0.093	0.183	0.271	1.17	2.054	0.44	16221	15250	94.014				17.2	33.1	59.2	98.1	218.0	738	731	0.0633	0.2683	0.6413		0.0267	0.0725	0.4251	0.4855	0.0002	0.0158	0.4721			0.5279	0.0941		0.8492	0.34	0.523	0.992	36.9	31.8	29.7	40.9	9.7	21.4	9.84	64	356	0.22	17.2	49.9	0.862	1.021	0.1333	0.0091	0.313	1.201	0.0115	0.549	1.015			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A shallow V sheet pile control installed in 1979 in a mainly rural catchment.	Shallow V sheet pile control installed in May 1979; some levels available from EA prior to this but not processed to flow.	Some low flow features caused by ponding and release upstream. However, flows above 1.5 cumecs should be treated with caution until high flow rating established.	Late 2010 and 2011 flows removed from NRFA due to substantial overestimation caused by vegetation d/s of the weir causing it to drown out. Missing data from 26/12/2021 until 07/01/2022 and 13/01/2023 until 19/01/2023 because of power failure (no backup available).	River shares most of its valley with the Shropshire Union Canal. Catchment mostly in Cheshire plain; post glacial Drift overlying Triassic sandstone and marl. Rural in character.	Responsive regime.
68018	Dane at Congleton Park	145.0	SJ8610063272	386100.0	363272.0	53°09'58.9743"N 2°12'33.7361"W	53.16638	-2.20937	Dane	Congleton Park	78.0	EA-GMMC	681006	68	1936-01-01		B		17.0		true	true	true	true	false	false	false	true	false	false	false	false	false	SPG	1979-11-01	2023-09-30	2.689	0.429	2007-09-16	2007-09-16	45.7	1991-12-21	1991-12-21	0.713	1.166	1.7	5.608	8.06	0.52	16040	14432	89.975	1936-07-20		41.75	71.5	132.0	254.2	437.6	556.7	1064	1030	0.0775	0.0383	0.7416	0.0776	0.0522	0.0841	0.0325	0.6803	0.1578	0.0421		0.702		0.298	0.0379	0.0001	0.4882	0.5	0.408	0.979	117.8	39.65	36.8	46.0	10.4	32.99	17.95	270	258	0.21	77.9	142.56	0.588	0.705	0.044	0.0183	0.709	0.359	0.0228	0.837	0.372	1935	1935-10-01..1936-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested weir oblique to flow gauging a mainly rural catchment.	Station opened February 1936 on an existing broad-crested mill weir oblique to flow (channel width 17.3m upstream, weir 46.3m across), with relatively narrow crest but a long sloping downstream face at approx 1:5 slope. Station closed in 1953 and re-opened in 1968. Flows available for a similar catchment from 1953 to 1986 at Hulme Walfield downstream (68006).	Crest is approx 2.9m above downstream channel, which is comparatively narrow, so only extreme events might drown. Channel upstream of weir has high vertical walls, although slight spill over left bank at the weir above approx 1m. Sluice to the old mill (on right bank) reported in November 1971 as having been recently filled in - the offtake to the mill will have reduced flows, but probably had little effect on flood events. One peak flow rating applied across period of record, developed from hydraulic modelling which considered out of bank flow and confirmed by ADCP gaugings.	The chart datum was lowered by 1ft from 15/8/1940 to closure on 4/5/1953, and the original datum was used when station reopened in 1968. Stages presented in the peak flow holdings have been set to the original datum. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	The north-east and south-west are made up of Millstone Grit and shale, overlain by coal measures. In the centre, the Yoredale series of shale and sandstones are exposed with Upper Triassic Keuper Marls in the west. The area is partly covered with glacial clays, sands and gravels. Alluvium occupies the bottom of the valleys. A mainly rural catchment. No catchment changes known.	Bosley reservoir is in the catchment. Several groundwater abstractions.
68020	Gowy at Bridge Trafford	156.0	SJ4483071113	344830.0	371113.0	53°14'03.0132"N 2°49'40.7984"W	53.23417	-2.828	Gowy	Bridge Trafford	4.1	EA-GMMC	684027	68	1979-01-01		FV			13.4	true	true	false	true	false	false	false	true	false	false	false	false	false	PG	1979-08-24	2023-09-30	1.182	0.0	2021-10-01	2021-10-01	22.71	2021-01-21	2021-01-21	0.245	0.416	0.614	2.46	3.94	0.49	16109	16101	99.95	1979-08-23		15.168	6.0	18.0	41.5	98.1	218.0	724	729	0.0639	0.2917	0.5953	0.0001	0.0487	0.0602	0.4367	0.4742	0.0003	0.0275	0.7874			0.2126	0.1012	0.0007	0.8079	0.35	0.538	0.994	33.8	32.27	28.8	39.1	9.9	33.37	13.85	52	294	0.17	6.0	148.66	1.024	0.888	0.1463	0.012	0.515	0.928	0.0166	0.684	0.913			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging a largely rural catchment in Cheshire.	A standard Flat V weir, 6m wide with 1:10 cross-slopes, opened in August 1979, located 30m upstream of a tight bend. Station replaced Picton (68002, 1km d/s).	Cableway present. Variable backwater due to significant seasonal weed growth (e.g. in 2008). Maintenance of downstream channel reduced after 1999. Flows affected by backwater estimated by gauging upstream within road bridge. Siltation can also cause backwater problems (channel is intermittently dredged). High flows inundate adjacent fields. Some circulation effects downstream of structure near right bank. Originally gauged with a current meter by cableway, which did not include bypassing. Complex range of issues since January 2012: reduced dredging and conveyance of sediment affecting rating curve and stage discharge techniques, whilst broken tidal flaps have introduced tidal fluctuations in stage record. As a result, flow derivation suspended in 2012, to explore alternative flow measurement methods, but since re-instated. Originally a theoretical rating. The separate ratings for summer and winter make some allowance for varying weed and siltation. Out of bank flows are only known approximately.	Revised gauged daily flows from start of record (08/1979) to 10/1981 loaded on 11/08/2009 due to new rating that reduced the flows. Gauged daily flows rejected from 11/07/2009 to 10/10/2009. A high flow gauging on 26/6/2007 was made by ADCP from the bridge, which included all flows - see photograph for out of bank flows at around 2.22m. 1981 and 2000 floods are under review. Discontinuity in low flows (e.g. 24/05/18 and 26/09/19) caused by switch to summer rating. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	A largely rural catchment in the Cheshire Plain; low relief, glacial drift over Triassic sandstones and marl. No catchment changes known.	Responsive regime. Sluice gates control flow downstream to catchment outflow into Manchester Ship Canal. Some minor abstractions and discharges.
68021	Arrowe Brook at Acton Lane	17.87	SJ253893	325300.0	389300.0	53°23'42.8077"N 3°07'29.3851"W	53.39522	-3.12483	Arrowe Brook	Acton Lane		EA-GMMC	685517	68	2005-12		FL				true	true	true	true	false	false	false	true	false	false	false	false	false		2005-12-21	2023-09-30	0.116	0.0	2015-10-26	2018-10-24	3.498	2021-01-20	2021-01-20	0.009	0.032	0.058	0.265	0.428	0.34	6493	6332	97.52	2005-06-22		3.976	8.2	16.5	39.9	74.4	102.5	759	750	0.1612	0.1111	0.3811		0.34	0.1076	0.266	0.2738		0.3521	0.6994			0.3006			0.6285	0.38	0.513	0.996	24.8	33.37	30.0	38.7	10.3	9.14	4.47	43	355	0.5	9.6	17.87	0.872	0.822	0.1385	0.168	0.835	0.865	0.1735	0.891	0.883	2005		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard compound flume draining an urban catchment west of Birkenhead.	Station opened in 2005 on pre-existing non-standard compound flume in rectangular concrete channel, with long backslope giving a drop downstream.	The very highest flows have been observed to spill out of bank upstream and to have approached the soffit of the bridge immediately upstream. The effect on the peak flow will have been slight. Peak flow rating based on low flow current meter gaugings within flume and high flow gaugings using ADCP from the bridge at the station. Rating extended beyond highest gauging (at 1.32m) using hydraulic model.	First year of record rejected as it's a partial year of data. Some discontinuities in the stage record. Issues with the outstation in 2017-2018 mean that flows should be treated with caution. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Very flat and urbanised catchment. Geology mostly of blown sand deposits with Boulder Clay over Sherwood Sandstone. No catchment changes known.
68044	Dane at Hug Bridge	72.9	SJ9309263617	393092.0	363617.0	53°10'10.6358"N 2°06'17.2546"W	53.16962	-2.10479	Dane	Hug Bridge	139.0	EA-GMMC	681003	68	1992-08		FV			15.0	true	true	false	true	false	false	false	true	false	false	false	false	false		1992-08-01	2023-09-30	1.843	0.223	2018-09-05	2018-09-05	101.0	1998-10-23	1998-10-23	0.373	0.72	1.14	4.05	5.8	0.49	11383	11095	97.47	1992-08-01		43.99	138.9	224.3	363.5	467.6	556.7	1208	1160	0.0735	0.0021	0.7587	0.1398	0.0066	0.0861	0.0061	0.6168	0.2897	0.0008		0.8942		0.1058			0.2024	0.52	0.373	0.997	146.1	43.96	39.1	49.0	10.6	18.34	10.88	353	231	0.18	138.9	72.56	0.361	0.781	0.025	0.0003			0.0011			1991		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat-V weir in responsive catchment draining the western Peak District.	Flat V weir (1:20 cross-slopes) constructed in November 1991, continuous records from August 1992.	Gravel accretion above the weir affects the rating at low flows. An arched road bridge 20 m downstream can cause the river to back up to the weir at high stages. Above bankfull at 0.95m, flow expands out onto a wide flood plain, and into and around the station hut on the right, bypassing the cableway on both banks. Not rated above bankfull. Multiple peak flow ratings derived from gaugings applied across period of record.	The level of the flood event of October 1998 is estimated from wrack marks in the gauging hut. This level is considerably above both bankfull and the applicability of the rating, and probably reflects control from the road bridge. The flow value is therefore very uncertain. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A predominantly rural catchment with steep relief, draining the western flank of the Peak District. Mixed geology including Millstone Grit, Yoredale series, coal measures and sandstone. The area is partly covered with glacial clays, sands and gravels. No catchment changes known.	Very responsive regime. Abstraction immediately upstream of weir for water treatment works.
69001	Mersey at Irlam Weir	679.0	SJ72769355	372760.0	393550.0	53°26'16.8595"N 2°24'41.4571"W	53.43802	-2.41152	Mersey	Irlam Weir	10.3	EA-GMMC		69	1934-01-01	1983-04-06	CB			17.1	true	false	false	false	false	false	false	false	false	false	false	false	false	SPGEI	1921-01-01	1978-12-31	14.18	0.651	1955-08-26	1955-08-26	236.0	1948-01-13	1948-01-13	3.849	7.176	9.848	27.88	39.36	0.56	21184	16497	77.875				12.8	36.0	217.0	464.7	635.5	1095	1112	0.1002	0.0187	0.4237	0.1782	0.2471	0.0729	0.0483	0.3931	0.2147	0.2591	0.2226	0.5492		0.2283	0.1104	0.167	0.4074	0.51	0.421	0.909	107.0	37.83	38.1	51.1	10.8	81.93	52.04	231	276	0.24	12.8	702.95	1.55	0.522	0.122	0.1079	0.759	0.619	0.1496	0.882	0.643			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A broad-crested weir station that was closed in 1983.	Original 1934 calibration of this rather insensitive broad-crested weir was by formula but, in 1938, a model-based rating led to significant increases in estimates of high flows. Station closed in 1983.	Current meter gaugings 1975-85 suggest that flows above 10 cumecs should be higher still. 1921 data from published source.		Steep tributary streams rise mainly on western slopes of Pennines (Millstone Grit), extensive Drift cover below headwaters. Land use transition from open moorland to the heavily urbanised lower catchment (includes much of south Manchester). Longdendale reservoirs control 10% of the catchment.
69002	Irwell at Adelphi Weir	559.4	SJ8241998759	382419.0	398759.0	53°29'06.8986"N 2°15'59.0844"W	53.48525	-2.26641	Irwell	Adelphi Weir	24.1	EA-GMMC	690511	69	1949-01-01		B			9.5	true	false	false	false	false	false	false	true	false	false	true	false	false	SPGEI	1949-10-01	2023-09-30	17.623	1.05	1951-07-29	1951-07-29	475.7	2015-12-26	2015-12-26	4.96	7.75	10.9	37.4	52.7	0.48	27028	26594	98.394				26.4	91.0	201.1	358.9	475.6	1252	1259	0.1102	0.0285	0.5073	0.0659	0.2591	0.0719	0.0624	0.4252	0.1423	0.2819	0.0004	0.3246		0.675	0.1435	0.0946	0.506	0.54	0.429	0.909	90.7	37.35	41.1	56.6	11.6	62.12	39.43	212	184	0.15	26.4	552.17	1.056	0.824	0.074	0.1134	0.765	0.821	0.1581	0.851	0.835			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested weir on the Irwell in Salford, used in conjunction with Manchester Racecourse upstream.	Station opened in 1935 on a 40m wide broad-crested weir on a mill in urban Salford. The river Irk joins the Irwell 2km downstream. Operated in conjunction with Manchester Racecourse (69025) which is about 1.5km upstream. However, current development of peak flow rating will remove the need for Manchester Racecourse as a sister site.	Weir is insensitive at low flows, and low flows may be affected by minor leakage through right bank retaining wall. Very little weed growth at station where the level is measured. All flows except extreme events (e.g. September 1946) are contained within the river channel. Weir is drowned during very high flows. After the major flooding in 1946, flood alleviation measures included channel improvements downstream of the weir, which from September 1970 increased the flow at which the weir is drowned. Rating history includes hydraulic modelling at Manchester, and later Liverpool, University. Until 1971, charts were designed to show flow clearly, with stage only secondary, though the rating and chart range changed over the period. Rating originally established by physical model tests and current meter gaugings upstream at Manchester Racecourse (69025). Flow hydrographs should be the same at Adelphi Weir and Manchester Racecourse, but since the early 1990's some events have a lesser flow recorded at Adelphi Weir, possibly due to siltation or well lag. In-channel PTX installed March 2010 as a check on peak levels - the rating curve uses the PTX when the levels are greater than 0.250m to account for the well issues. Priority site for high flow gaugings with a view to developing a peak flow rating. Flood Studies Report grade C.	Gauged daily flows: some records from 1935, routine data capture began in 1949. Major technical problems in 2000: gaps in Mar, Apr, Jun, Sep & Oct estimated by NRFA using 69023. Peak flows: a single combined AMAX series for 69002 and 69025 is held under 69025 from 1941. The winter flooding of 15/16 was just in bank.	Permo-Triassic sandstones in the south-west with coal measures, grits and sandstones of the Carboniferous series to the north and west overlain by postglacial drift deposits. The high ground is made up of peat and the valleys consist of sands and gravels. Deeply incised headwaters valleys drain the Pennine moors; lower catchment includes the urban/industrial areas of Bolton, Bury and Rochdale. No catchment changes known.	Very responsive regime. Many abstractions and storage reservoirs - highest impact on low to mean flows. Flood basins upstream of Manchester Racecourse attenuate peak flows - Littleton Road (completed prior to Jan 2008 flood) and Castle Irwell (completed 2017).
69003	Irk at Scotland Weir	72.5	SJ84129919	384120.0	399190.0	53°29'21.0409"N 2°14'26.8824"W	53.48918	-2.2408	Irk	Scotland Weir	26.2	EA-GMMC	690612	69	1949-01-01	2001-05-31	CB			22.0	true	true	false	true	false	false	false	false	false	false	false	false	false	SPGEI	1937-10-01	2001-05-14	1.794	0.142	1956-05-19	1961-06-30	40.82	1964-12-12	1964-12-12	0.408	0.909	1.312	3.483	4.882	0.53	23237	17182	73.942	1949-11-01	2001-05-14	37.913	29.4	70.8	104.6	175.3	246.8	1048	1024	0.1707	0.0274	0.2108		0.57	0.0708	0.0414	0.2407	0.0024	0.6353	0.0743	0.0496		0.8761	0.5131		0.4869	0.57	0.508	0.925	45.3	31.83	36.2	49.5	11.0	21.59	12.47	115	230	0.35	32.8	73.28	0.897	0.877	0.1144	0.288	0.816	0.955	0.3941	0.898	0.958	1951..1990		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard weir affected by siltation, weed growth and debris. Station closed 2001 and replaced by Collyhurst (69043).	Station closed 2001 and replaced by Collyhurst (69043); period of overlap shows good agreement between flows at the two stations.	No bypassing and very likely to remain modular as the drop is several metres over the weir. A heavily polluted river where siltation, weed growth and debris are recurrent problems and clearance is dangerous. Original rating based on physical model tests in 1936 and check gaugings at Redbank 1km upstream. Site was re-levelled in 1976 and new rating applied based on gaugings. Third rating, based on gaugings, applied after flood damage to weir crest in 1983. Flood Studies Report grade A1.	Due to siltation, weed growth and debris there is particular doubt on low-flow records before 1976, although data quality in general is not good. Weir damaged by a flood in December 1983. Station closed between February 1991 and October 1995. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Low to moderate relief catchment; moorland headwaters but extensively urbanised in the lower Irk (includes Oldham and north Manchester). Solid geology: Coal Measures and Permo-Triassic sandstones, fully overlain by post-glacial sands and gravel and subordinate boulder clay. No catchment changes known.	Responsive flow regime but with a wide range of artificial influences including many industrial abstractions and effluent discharges. One small reservoir.
69004	Etherow at Bottoms Reservoir	78.2	SK023971	402300.0	397100.0	53°28'14.2707"N 1°58'00.5482"W	53.47063	-1.96682	Etherow	Bottoms Reservoir	132.3	NWW		69	1945-01-01	1981-12-31	TP				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1945-10-01	1981-12-31	1.311	0.081	1977-07-22	1977-07-22	52.87	1965-12-09	1965-12-09	0.289	0.53	0.589	2.865	5.324	0.39	13241	12784	96.549				147.4	241.7	437.7	550.2	631.2	1491	1488	0.0477	0.0026	0.2799	0.599	0.0075	0.0452	0.001	0.1839	0.7399	0.0012		1.0				0.613	0.112	0.54	0.308	0.745	162.5	52.38	50.1	67.3	11.5	16.12	9.58	417	268	0.07	147.4	68.22	0.164	0.925	0.0105	0.0006			0.0015					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A rectangular thin-plate weir that monitored outflows from Bottoms Reservoir, station closed in 1981.	Rectangular thin-plate weir. Monitored outflows from Bottoms Reservoir. Station closed in 1981.			Predominantly Millstone Grit catchment, peat covered moorland in headwaters, steeper slopes drift free.
69005	Glaze Brook at Little Woolden Hall	152.0	SJ6849893886	368498.0	393886.0	53°26'26.8735"N 2°28'32.5348"W	53.4408	-2.4757	Glaze Brook	Little Woolden Hall	9.0	EA-GMMC	693032	69	1953-01-01		US			6.7	true	true	true	true	false	false	false	true	false	false	false	false	false	PGEI	1954-10-01	2023-09-30	3.283	0.396	1961-08-02	1961-08-02	49.9	2021-01-20	2021-01-20	0.787	1.45	2.124	7.16	9.947	0.5	25202	18585	73.744	1953-08-10		32.679	11.7	19.4	33.7	111.5	163.9	953	965	0.0777	0.1786	0.366	0.0416	0.3279	0.0619	0.3815	0.2447	0.0157	0.2867	0.3676	0.0496		0.5827	0.1077	0.0732	0.8191	0.41	0.39	0.927	20.4	37.91	33.5	46.6	11.5	29.07	13.03	50	178	0.27	11.7	160.15	2.534	0.809	0.261	0.1114	0.767	1.034	0.1479	0.863	1.051	1995		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station gauging a low relief catchment in south Wigan. Replaced velocity area station in 1995.	Twin-path ultrasonic gauge installed in 1995 which replaced a velocity area station. Station used for flood warning. Operated as level-only from 1983 - 1995.	No stable rating due to the effects of weed growth. No bypassing reported.	Some gaps in record, particularly in early years. Velocity area record unreliable as very badly affected by weed growth throughout the year and suffered backwater effects from the Ship Canal. AMAX and POT data are entirely from ultrasonic gauge (February 1996 onwards). Gaps in ultrasonic record from 2003 onwards due to equipment failure and debris. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7). Missing data Nov-Dec 2021 whilst ultrasonics upgraded.	Low relief catchment with headwaters in South Wigan with three major flashes (instream lakes created from mining subsidence). No catchment changes known. Solid geology: Coal Measures in the headwaters, otherwise Sherwood Sandstone with some Marl. Extensively draped with Boulder Clay, some peat and glacial gravels south of Leigh. Many urban centres, much effluent, motorway drainage and potential mine drainage pollution. Much of the catchment is relatively flat agricultural land. Some tributaries extend into mining and industrial areas.	Catchment contains Pennington Flash and other smaller flashes. Bedford Park Storage Basin in upper reach - part of flood control scheme.
69006	Bollin at Dunham Massey	257.6	SJ7266887533	372668.0	387533.0	53°23'02.1448"N 2°24'44.5570"W	53.38393	-2.41238	Bollin	Dunham Massey	12.8	EA-GMMC	693536	69	1955-01-01	2002-01-11	VA	76.0		5.0	true	true	false	true	false	false	false	false	false	false	false	false	false	SPGEI	1955-10-01	2002-01-09	3.987	0.566	1959-10-04	1959-10-04	45.87	1972-04-01	1972-04-01	1.133	1.881	2.696	8.099	11.42	0.57	16903	16534	97.817	1936-10-14	2002-01-09	38.414	18.8	44.1	83.0	281.1	483.1	865	881	0.1533	0.0882	0.5564	0.0041	0.1857	0.0977	0.219	0.5134	0.0133	0.1472	0.3302	0.1649		0.5049	0.2468	0.0135	0.6156	0.43	0.507	0.946	56.2	32.55	31.7	42.4	10.3	50.15	26.85	124	302	0.25	18.8	257.57	0.892	0.825	0.1167	0.0454	0.653	1.07	0.0788	0.819	1.007	2001		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station upstream of the confluence with the Manchester Ship Canal. Station closed in January 2002 and replaced by Bollington Mill (69045).	A velocity area station in a natural river section located a few km upstream of the confluence with the Manchester Ship Canal. Opened 1936, closed 09/01/2002, replaced by Bollington Mill 750m upstream (69045).	No formal control or structure (so no wing wall height held), cableway present. No bypassing reported. The riverbed is mobile, with sediment erosion during high flows and accumulation during dry spells; summer weed growth also a problem. The Bridgwater canal, which crosses the river just upstream of the station, burst its banks in August 1971, and modified the river bed for at least 18 months. Daily flow rating only approximate owing to very unstable bed and weed growth. Site also affected by siltation causing blockage of inlet to stilling well. Multiple peak flow ratings applied across period of record, the most recent is valid from December 1985. Ratings derived from current meter gaugings, significant scatter towards high flows. Flood Studies Report grade B.	Level records from 1937. Flows from 1954 but of poor quality due to mobile bed. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Geology of the upper reaches consists of Millstone Grit and the lower parts have marls overlain with postglacial deposits. Land use is very mixed - a predominantly rural catchment but includes the urban areas of Macclesfield near the headwaters, Wilmslow in the mid-catchment and the outskirts of Greater Manchester at the outlet. No catchment changes known.	Very responsive regime. Reservoirs and many industrial abstractions and discharges affect low flows particularly.
69007	Mersey at Ashton Weir	660.0	SJ7723993563	377239.0	393563.0	53°26'18.0483"N 2°20'38.7418"W	53.43835	-2.34409	Mersey	Ashton Weir	14.9	EA-GMMC	692726	69	1958-01-01		CBUS	500.0	50.0	5.4	true	true	false	true	false	true	false	true	true	false	false	true	false	SPGEI	1976-05-31	2023-09-30	13.989	0.0	2022-10-08	2023-03-07	221.8	2021-01-20	2021-01-20	3.823	6.378	9.319	28.82	39.81	0.54	17289	17289	100.0	1958-06-11		165.5	18.4	56.4	229.3	468.9	635.5	1108	1127	0.1035	0.0158	0.4344	0.1869	0.2276	0.075	0.0457	0.4047	0.2262	0.2364	0.1886	0.5785		0.2329	0.0743	0.1752	0.4185	0.53	0.413	0.905	112.4	38.41	38.5	51.5	10.8	72.12	44.49	242	278	0.24	18.4	667.27	1.121	0.564	0.0907	0.0949	0.75	0.596	0.1353	0.875	0.614	1957..2022		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir with ultrasonics. Peak flows truncated by flood storage basins.	Station opened in 1958 as a replacement for Irlam Weir (69001) downstream. A compound broad-crested weir, 24m wide overall, with central lower section 12.2m wide and 0.49m lower than flanking crests (no divide piers). A 5-level cross-path Ultrasonic station was commissioned March 2009 just upstream of the weir, and upgraded in March 2024. A fish pass was added in March 2012 - ultrasonic flows are not affected. Two-stage channel profile, with a step at 4.5m and bankfull at 5.5m.	The weir is insensitive at low flows and drowns at high flows. Flows contained - no bypassing. Low and medium flows generally reliable. Peak flows reliable since cross path ultrasonic gauge installed for high flow measurement in March 2009. Cableway demolished during construction of motorway in 1978, then re-instated for most recent high flow gaugings in late 1990's and removed late 2000's. Until March 2009 flows derived from rating, based on gaugings. High flow gaugings in 1998 from cableway revealed a complex stage-discharge pattern (hysteresis) above 100m3/s, which is thought to be due to variable backwater (differential drowning of the weir crest and seasonal variations in vegetation growth affecting the conveyance). Ultrasonic gauge confirms the hysteresis. A fish pass was added in March 2012 - ultrasonic flows are not affected. Flood Studies Report grade B.	Peak flows (over 100 m3s-1) before installation of the ultrasonic measurement in March 2009 are likely to be significantly overestimated. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	A steep westward draining Pennine catchment with headwaters in the Peak District. Geology is a mixture of gritstones on high ground and Triassic marls and sandstones overlain with postglacial deposits in the west. Land use transition from open moorland to the heavily urbanised lower catchment (includes much of south Manchester).	Responsive regime despite substantial reservoir development in the headwaters (Longdendale reservoirs control 10% of the catchment). Several smaller reservoirs in the Tame and Goyt catchments control a further 13% of the catchment. Flood flows are truncated by operation of offline storage basins at Didsbury and Sale Ees upstream.
69008	Dean at Stanneylands	58.87	SJ8462583001	384625.0	383001.0	53°20'37.2444"N 2°13'56.6190"W	53.34368	-2.23239	Dean	Stanneylands	57.0	EA-GMMC	693333	69	1967-01-01		CC		50.0	22.0	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGEI	1976-01-01	2023-09-30	0.854	0.036	1976-07-09	1976-07-09	23.67	2019-07-31	2019-07-31	0.137	0.343	0.547	1.86	2.6	0.52	17440	17351	99.49	1966-11-29		9.652	51.0	79.9	143.5	360.4	483.1	918	954	0.1278	0.022	0.7004	0.0037	0.1382	0.0691	0.0957	0.6993	0.0196	0.1112	0.5029	0.3304		0.1668	0.2041		0.416	0.52	0.552	0.96	87.2	28.78	33.3	44.0	10.3	26.37	14.48	187	288	0.34	51.1	58.87	0.806	0.632	0.1028	0.0314	0.619	0.595	0.0632	0.804	0.543			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A compound crump weir on the River Dean. Moorland headwaters.	Station opened late 1966 with Compound Crump weir. All sections 3.05m wide, the two side weirs being 0.46m above central lower crest. Downstream recorder added July 2013 to monitor effect of downstream "pre-weir" to aid fish passage. No events above bankfull.	The channel bed upstream is silty, and the main problem has been blockage of the inlet pipe; the well Pipe extended July 2007. Channel accretes at high flow requiring regular clearance. Low to medium range calibrated by current meter. Gauged close to QMED in 2019. Observations during events confirm weir highly unlikely to have ever drowned (see photos).	Some peaks in the series are thought to have been under-recorded; however, the percentage under-estimate of flow is thought to be low. Daily flows and AMAX during high flows in July/August 2019 may be overestimated due to silt on the outer wings of the compound weir. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Steep moorland headwaters drain Millstone Grit from W Pennines and contain Lamaload Res. Lower catchment developed on Boulder Clay covered Triassic sandstones and contains Bollington.	Although catchment descriptors are very similar, flow response is much slower and less peaky than at Wilmslow. An electro-magnetic gauge at Manchester Airport downstream of the confluence of the Dean and the Bollin confirms flows at the two upstream stations. (The Manchester Airport station is now closed). Significant flow disturbance from reservoir, abstractions and returns. Lamaload Reservoir (completed 1964) in the headwaters of the catchment.
69012	Bollin at Wilmslow	72.5	SJ8497081491	384970.0	381491.0	53°19'48.4184"N 2°13'37.7045"W	53.33012	-2.22714	Bollin	Wilmslow	59.1	EA-GMMC	693435	69	1968-01-01		CC		48.0	9.4	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGEI	1976-01-01	2023-09-30	1.295	0.281	1977-08-16	1977-08-16	19.64	2019-07-31	2019-07-31	0.464	0.679	0.92	2.51	3.391	0.6	17440	17432	99.954	1968-07-01		17.37	60.3	89.2	159.0	315.9	474.9	926	933	0.1316	0.0278	0.599	0.0081	0.2201	0.1222	0.0804	0.5667	0.028	0.1971	0.5092	0.3367		0.1541	0.366	0.0218	0.5052	0.52	0.545	0.951	81.7	31.03	33.5	43.6	10.3	25.08	15.43	183	316	0.23	60.3	68.38	0.633	0.887	0.0785	0.0749	0.736	1.0	0.113	0.848	0.914			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir gauging a responsive catchment rising to the western Pennines.	Compound Crump profile weir, 9.3m wide overall, consisting of central crest 4.12m wide and two side crests each 2.13m wide and 0.377 m higher; divide piers 1.0m, wing walls 2.0m. A pumped eel pass and pre barrage fish pass were installed April 2015.	No bypassing reported. Single rating derived from gaugings. No cableway - higher flows gauged off road bridge. Downstream levels recorded from February 2005, and indicate onset of non-modular flow around 1.15m. Flood Studies Report grade A2.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Moderate relief catchment with steep, reservoired headwaters. Catchment rises on the western edge of the Pennines. Upper catchment drains Millstone Grit, generally Drift free. Otherwise Boulder Clay and glacial sands and gravel over Permo-Triassic sandstone. Land use is mainly agricultural but contains Macclesfield. No catchment changes known.	Responsive regime. Headwater reservoirs control 5% of the catchment area. One major sewage treatment works, upstream of station.
69013	Sinderland Brook at Partington	44.8	SJ7255490458	372554.0	390458.0	53°24'36.7705"N 2°24'51.6465"W	53.41021	-2.41435	Sinderland Brook	Partington	13.0	EA-GMMC	693132	69	1968-01-01		CC		38.0	14.8	true	false	false	false	false	false	false	false	false	false	false	false	false	PGEI	1976-01-01	2023-09-30	0.523	0.101	1976-08-22	1976-08-22	9.634	2019-07-31	2019-07-31	0.17	0.266	0.365	1.02	1.4	0.59	17440	17383	99.673				15.1	20.6	31.6	63.1	81.9	823	827	0.0785	0.0944	0.2608	0.018	0.5474	0.0294	0.2151	0.1802	0.0003	0.5731	0.1662			0.8338	0.5607	0.0748	0.3645	0.39	0.48	0.989	12.2	32.83	31.3	41.3	10.8	17.6	7.98	37	329	0.47	15.1	44.72	1.528	0.802	0.2814	0.2045	0.753	1.117	0.2743	0.899	1.16			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A compound crump profile weir in a heavily urbanised catchment.	Compound Crump profile weir, crest lengths 2.13m and 5.48m (total). Contained to wing wall height (2.0m). Weir much wider than u/s channel.	Big siltation problem, crest tapping usually blocked. Revised data from start of record (1/1976) to 12/2008 loaded in 03/2010: new data are lower at high flows and slightly higher at low flows; previous max GDF on 6/8/81 reduced from 12.2 to 8.7 m3s-1.	Peak in flow on 14 August 2014 is thought to be overestimated due to weed growth.	Very flat catchment, heavily urbanised although the bottom end is rural. Solid geology is Keuper Marl (70%) and sandstone (30%); south western portion Boulder Clay covered. Soils fine red loams or clays.	Responsive regime. Storm waters from Wythenshaw, Sale and the M56 are directed to the Mersey.
69015	Etherow at Compstall	156.0	SJ9624190768	396241.0	390768.0	53°24'49.3414"N 2°03'28.8650"W	53.41371	-2.05802	Etherow	Compstall	73.5	EA-GMMC	692190	69	1977-01-01		C		200.0	23.7	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGEI	1971-03-16	2023-09-30	3.662	0.29	1982-05-12	1982-05-12	77.6	1991-12-21	1991-12-21	0.82	1.34	2.05	8.3	11.6	0.5	19192	18759	97.744	1969-03-20		52.852	75.0	160.5	343.1	522.7	631.2	1318	1322	0.085	0.0087	0.3554	0.4465	0.0632	0.0718	0.0244	0.3465	0.4914	0.0503		0.9109		0.0891	0.0125	0.4678	0.2489	0.53	0.367	0.831	154.0	44.3	43.9	58.8	11.0	29.2	17.54	342	260	0.15	75.0	149.4	0.44	0.699	0.0251	0.0206	0.655	0.668	0.0331	0.782	0.666	1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump weir located on the Etherow, just upstream of the confluence with the Goyt. Half of the catchment drains through Longendale reservoirs, with a significant effect on the flow regime.	A single crest Crump weir opened March 1969; 18m wide, wing walls 2.8m high, located 0.5km upstream of Goyt confluence.	Station further contained by flood banks, but there is a low point on the right bank just upstream of the structure at approx 2.2m. Crest tapping readings were used to establish a non-modular rating; tapping no longer used due to stones lodged in pressure tapping points. A downstream recorder was installed in October 2006 to investigate drowning. Event in February 2011 removed shoal downstream and appears that onset of drowning is now at a higher stage. More gaugings needed to confirm. No cableway. High flow gaugings have been taken by current meter from the road bridge upstream and from late 2004 have been taken by ADCP immediately upstream of the weir, within the retaining walls. One peak flow rating applied across period of record based on gaugings, with top-end based on modelling.		The River Etherow rises on the Pennine watershed above Longdendale. Geology comprises mostly Millstone Grit, and Boulder Clay in the lower catchment with peat covered moorland in the headwaters. Steeper slopes are drift free. A predominantly rural catchment in the headwaters with mixed urban and farmland in the lower reaches. Market towns of Glossop and Chapel-en-le-Frith provide some urban runoff. No catchment changes known.	Half the catchment drains through Longdendale reservoirs, used for public water supply, with significant effect upon flows (e.g. drops in flow in Nov and Dec 2021).
69017	Goyt at Marple Bridge	183.0	SJ96378979	396370.0	389790.0	53°24'17.6979"N 2°03'21.8365"W	53.40492	-2.05607	Goyt	Marple Bridge	74.4	EA-GMMC	692370	69	1969-01-01		CC		190.0	10.5	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGEI	1969-04-01	2023-09-30	4.092	0.22	2023-06-24	2023-06-24	82.6	1991-12-21	1991-12-21	0.807	1.42	2.34	9.35	13.29	0.5	19906	18047	90.661	1969-03-23		61.047	79.3	182.6	298.7	453.7	635.5	1144	1152	0.1005	0.0148	0.6781	0.1273	0.0547	0.0985	0.0524	0.6167	0.1761	0.0484		0.722		0.278		0.0843	0.2744	0.52	0.482	0.918	151.3	32.5	37.6	50.7	10.4	28.61	17.96	309	285	0.15	79.7	184.23	0.464	0.846	0.0304	0.0135	0.536	0.789	0.0246	0.701	0.792	1968		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir draining a Pennine catchment with flows affected by upstream reservoirs.	Compound Crump weir opened March 1969, 19m wide overall with centre crest 7 m wide flanked by two crests 5.5 m wide and 0.40 m higher; divide piers are 0.4 m wide. Wing walls 2.9m, divide piers 2.1m high.	All flows are contained within the structure. High flows have been gauged from a bridge upstream by handline. The weir has a bypass sluice for maintenance. Considerable debris, including trees, may be trapped on the divide piers at high flows; debris was observed to raise levels during the September and early October 2008 events (shown in station photographs and by the upstream/downstream stage relationship). Theoretical rating considered good in low flow crest below 0.5m but is consistently 20% less than gaugings above this; downstream recorder, installed 8/2006, confirms drowning a little below 1.5m. One peak flow rating applied across period of record, based on gaugings, with modelled top-end. Recent high gaugings by ADCP confirm earlier current metering. More high flow gaugings needed.	Gauged daily flow data for 1969 and 1970 are of lower quality and are missing from 1971-1975 because of system failure. Peak flows: the event in 1973 is also the highest on record at Brinksway (downstream of the confluence with the Tame and Etherow), but the level at Marple Bridge could have been affected by debris, and there is a vague report about a canal breach at the time. Pumping into Todd Brook (max. rate 5 cumecs) to drain Toddbrook Reservoir during emergency repairs began 1/08/2019 and continued until end Sept. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9). Exceptionally low flows in summer 2023.	Catchment rises in the Pennines. Geology comprises Millstone Grit and Boulder Clay in the lower catchment with peat covered steeper slopes in the headwaters, including Kinder Scout. A predominantly rural catchment, with small industrial towns in the main valley. No catchment changes known.	Several reservoirs in catchment - Kinder, Combs, Todd Brook, Errwood and Fernilee - control approximately 32% of catchment in total. Moderate disturbance to flow regime.
69019	Worsley Brook at Eccles	24.87	SJ75279804	375270.0	398040.0	53°28'42.5933"N 2°22'26.7169"W	53.4785	-2.37409	Worsley Brook	Eccles	15.2	EA-GMMC	690914	69	1969-01-01	2001-04	FL	46.0	27.0		true	true	false	true	false	false	false	false	false	false	false	false	false	PGEI	1969-09-01	2001-04-15	0.299	0.002	1996-04-04	1996-06-25	6.229	1978-12-28	1978-12-28	0.058	0.138	0.196	0.624	0.863	0.48	11550	7660	66.32	1969-09-01	2001-04-15	5.74	19.8	24.1	59.4	101.2	130.7	957	956	0.0844	0.0277	0.2879	0.0124	0.5827	0.0929	0.0837	0.1985	0.0003	0.6153	0.0407	0.0748		0.8845	0.0648	0.0967	0.8386	0.44	0.349	0.941	22.2	37.63	34.3	46.3	11.2	12.06	5.19	61	187	0.55	19.8	24.05	1.667	0.772	0.2181	0.2373	0.766	1.055	0.3452	0.892	1.031	1968..1992		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Critical depth trapezoidal flume in artificial channel. Station closed 2001.	Critical depth trapezoidal flume in artificial channel: throat width 0.6m, side slopes 1:2, structure full at 2.43m, flood banks at 3.13m. Station opened 1969 and closed April 2001.	Flows fully contained. Twin box culvert 110m d/s with grids which are prone to blocking during floods, drowning the flume. One theoretical peak flow rating applied across period of record. Data quality poor.	Station not operational between December 1985 and June 1993. The AMAX for 2000-2001 occurs on the same day as those on surrounding stations, so is retained despite the station closure in this water year. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Generally low relief catchment to the NW of Manchester. Solid geology is predominantly Coal Measures with Permo-Triassic S'sts to the South, extensively covered by Boulder Clay. Urban areas cover approximately half, otherwise poor pasture and heathland and small area of woodland. Dense motorway network includes the M61, M62, M63, M602. No catchment changes known.	No major industrial or sewage discharges upstream of station. Several of the smaller tributaries have private impounding reservoirs originally devised for colliery and industrial supplies; these are of negligible area.
69020	Medlock at London Road	57.5	SJ8488497531	384884.0	397531.0	53°28'27.4404"N 2°13'45.1409"W	53.47429	-2.22921	Medlock	London Road	30.7	EA-GMMC	690713	69	1954-01-01		MIS	77.03	77.03	21.2	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGEI	1974-01-01	2023-09-30	0.854	0.055	1974-05-04	1974-05-05	20.98	2019-07-28	2019-07-28	0.193	0.355	0.522	1.8	2.55	0.47	18170	18136	99.813	1969-04-02		23.331	33.8	63.4	129.8	258.2	376.0	1039	1025	0.1882	0.024	0.2351	0.004	0.5254	0.0626	0.0624	0.3189	0.0096	0.544	0.1619	0.13		0.7081	0.0071		0.809	0.55	0.382	0.973	58.5	35.64	37.6	51.2	11.1	23.44	12.71	147	236	0.44	34.0	57.09	1.025	0.72	0.1094	0.2718	0.824	0.831	0.3666	0.911	0.849	1968..1991	1968-10-01..1992-08-10	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A non-standard short crested weir in rectangular concrete channel in heavily urbanised catchment.	A non-standard short crested weir 8.5m wide with sloping downstream face. Weir located in a rectangular concrete channel with vertical walls, upstream of a large culvert. Although the station was operational from April 1969, works were not completed until Sept 1969.	Debris collects on the weir in this urban environment. Some siltation around the inlet pipe. No bypassing. Modelling suggests weir drowns at the highest flows. From 1989-1992 construction of the Mancunian Way (motorway) significantly altered the river channel downstream of the gauging station. The channel was narrowed and wooden crest blocks were attached to the weir to create a low flow notch. They proved unsuccessful and were removed in October 1992. Access is difficult and gauging hazardous, current meter gaugings above low flows are taken from an upstream bridge. Peak flow rating based on gaugings at low flows, with modelled extrapolation, more gaugings are needed. All gaugings are now carried out at Palmerston Street which is approximately half a kilometre upstream. Multiple peak flow ratings apply over the period of record. Pressure sensor in river.	Peak flow data are rejected during motorway construction due to large fluctuations in stage (Oct 1989 to Aug 1992). Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	A heavily urbanised and industrial catchment extending into parts of Manchester and the southerly Pennine hills. Geology consists of coal measures overlain with post glacial soils. No catchment changes known.	Some runoff from artificial surfaces. Greatly affected by effluent discharges.
69022	Irwell at Irwell Vale	101.0	SD7912620167	379126.0	420167.0	53°40'39.1685"N 2°19'02.9152"W	53.67755	-2.31748	Irwell	Irwell Vale	139.5	EA-GMMC	690140	69	1964-01-01		VA			11.0	true	true	false	true	false	false	false	true	false	false	false	false	false	SPGEI	1996-01-21	2023-09-30	3.242	0.504	2022-08-16	2022-08-16	71.63	2015-12-26	2015-12-26	0.708	1.166	1.739	7.356	10.94	0.41	10115	10115	100.0	1996-01-21		78.453	139.5	208.5	303.7	386.1	475.6	1383	1392	0.0643	0.0136	0.7051	0.0531	0.1228	0.0627	0.0181	0.5168	0.2616	0.1301		0.557		0.443	0.0562	0.082	0.3301	0.55	0.455	0.934	118.8	36.17	42.2	60.1	11.5	17.6	8.98	300	238	0.09	140.0	100.6	0.473	0.824	0.0336	0.0474	0.596	0.76	0.0765	0.722	0.774			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with non-standard shallow V weir in urbanised catchment.	Opened January 1996 as velocity area station with non-standard shallow V weir. Station replaced Stubbins (69040), 2km downstream.	Weir drowns at approximately 0.55m. Reliable gaugings by wading at low flows only; bridge gaugings upstream are unreliable due to the nature of the bridge and inflows from River Ogden. A cableway was added in 2002. Two peak flow ratings across period of record derived from low flow current meter gaugings and high flow ADCP gaugings off the cableway. Upper segments of the rating are based on hydraulic modelling.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Moderate relief catchment draining the Forest of Rossendale. Solid geology Millstone Grit and Coal Measures; peat on highest moors, intermittent glacial drift otherwise. Urbanised main valley. No catchment changes known.	Reservoirs in headwaters have significant effect on low flows.
69023	Roch at Blackford Bridge	186.0	SD80690774	380690.0	407740.0	53°33'57.2836"N 2°17'34.8897"W	53.56591	-2.29302	Roch	Blackford Bridge	62.9	EA-GMMC	690205	69	1949-01-01		B	142.7	118.66	9.9	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGEI	1976-01-01	2023-09-30	5.027	0.981	1984-08-26	1984-08-26	106.8	2015-12-26	2015-12-26	1.47	2.24	3.13	10.5	14.65	0.52	17440	17440	100.0	1949-01-01		71.753	60.9	107.2	196.5	370.2	475.6	1223	1240	0.0799	0.0337	0.4927	0.0906	0.2644	0.0407	0.073	0.4441	0.1316	0.2939		0.2494		0.7506	0.1966	0.104	0.3777	0.57	0.499	0.911	93.2	33.11	41.9	57.5	11.3	34.35	20.15	218	218	0.18	60.9	190.45	0.88	0.844	0.0768	0.115	0.766	0.849	0.1603	0.847	0.839			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested curved mill weir with some control in the catchment by water supply reservoirs.	Station opened 1949 on broad-crested curved mill weir, 24m wide, with damaged crest.	No bypassing. Weir can be affected by debris. Minor siltation problems affected the inlet pipe pre-1984. Cableway installed in late 1990s but high flows previously gauged, with less accuracy, from road bridge 0.5 km upstream. Some backing-up from Irwell confluence about 730m downstream. Downstream level recorder added September 2006. Weir was completely drowned during the gaugings taken over the peak event in January 2008 - see station photos. One rating applied for peak flows across period of record from 1949, based on gaugings and hydraulic modelling of top end, notwithstanding doubts about state of weir in earlier years. Rating, including upper limb from model, is good fit to gaugings. Flood Studies Report grade C.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Geology mostly Coal Measures within Millstone Grit to the Northeast and Northwest. Peat overlays geology in moorland hilltops; mixed glacial drift in the lower catchment. Catchment is highly urbanised and contains Rochdale and Heywood. No catchment changes known.	A dozen small water-supply reservoirs in headwaters control a total of 16% of the catchment area.
69024	Croal at Farnworth Weir	145.0	SD7433906819	374339.0	406819.0	53°33'26.4979"N 2°23'19.8161"W	53.55736	-2.38884	Croal	Farnworth Weir	51.6	EA-GMMC	690408	69	1948-01-01		B	173.3	173.3	30.3	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGEI	1976-06-29	2023-09-30	3.255	0.409	1980-05-24	1980-05-24	67.9	1980-10-27	1980-10-27	0.778	1.25	1.76	7.38	10.9	0.42	17260	17260	100.0	1948-12-15		60.53	49.5	100.0	182.2	331.8	456.4	1283	1288	0.1396	0.0272	0.4584	0.0827	0.2725	0.0931	0.0636	0.3752	0.1514	0.2944		0.2673		0.7327	0.0369	0.1458	0.7173	0.51	0.33	0.862	80.4	44.46	41.5	56.5	12.0	24.21	12.96	201	156	0.21	49.9	141.78	0.652	0.774	0.0545	0.1212	0.796	0.571	0.17	0.882	0.615			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard broad-crested weir gauging a highly urbanised and industrial catchment.	Station opened December 1948 on a non-standard broad-crested mill weir 45m wide and 2.9 m long, with long downstream slope. Bend and island immediately upstream of weir. Island is maintained to prevent encroachment onto weir.	The weir is in good condition but is insensitive especially at low flows. Very high flows may bypass station on the inside of the loop, but no bypassing observed in 15/16 floods. Cableway was installed in June 2000. Backwater unlikely - confluence with River Irwell is approx 1.5km downstream, and weir is approx 2.6m above downstream bed. One peak flow rating applied across period of record. Scatter at low flows is thought to be at least partly due to differences in the location and method of spot gauging at different periods. Pressure sensor installed in river following 15/16 floods.	Peak flow record begins in 1948, but no digitised daily mean flows before 1976. Wrack mark after winter 15/16 floods at 1.8m. No high flow gaugings historically, some around QMED now taken by ADCP.	Geology of Millstone Grit overlain with peat moorland in headwaters, with Boulder Clay and coal measures in the urban lower parts. A highly urbanised and industrialised catchment which includes Bolton.	Several reservoirs in headwaters, particularly on the Bradshaw Brook tributary, controlling 27% of the catchment. Many effluent discharges lower down.
69025	Irwell at Manchester Racecourse	557.0	SD8206900349	382069.0	400349.0	53°29'58.3049"N 2°16'18.4014"W	53.49953	-2.27178	Irwell	Manchester Racecourse	24.2	EA-GMMC	690510	69	1941-01-01		VA				false	true	true	true	false	false	false	false	false	false	false	false	false	SPGEI																			1941-05-19		273.5	27.8	91.7	201.7	359.1	475.6	1253	1260	0.1104	0.0286	0.5083	0.0661	0.2576	0.072	0.0626	0.4262	0.1427	0.2802	0.0001	0.3256		0.6743	0.1422	0.0949	0.5062	0.54	0.429	0.909	90.8	37.36	41.2	56.7	11.6	59.73	37.17	213	185	0.15	27.8	550.5	1.01	0.829	0.0726	0.1122	0.765	0.818	0.1569	0.85	0.831			cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station located in Salford, used in conjunction with Adelphi Weir downstream.	An open channel section in urban Salford, primarily for flood forecasting. Used in conjunction with Adelphi Weir (69002) approx 2km downstream which has a very similar catchment area. Opened 1941.	All records in stage. Suffers severe weed growth in the summer months - poor at low flows - mean daily flows are not presented - see 69002. Subsequent flood alleviation works included (in order of construction) wall-raising, increase in channel conveyance between Manchester Racecourse and Adelphi Weir, and increasing channel conveyance downstream of Adelphi Weir (channel widening and cutting a new channel, water first flowed in September 1970). Scheme works thus changed the stage / discharge relationship at Manchester Racecourse. A second flood alleviation scheme was constructed in 2000, consisting of a flood storage basin in Salford upstream from Manchester Racecourse, and minor improvements to the defence heights. In the January 2008 event water just began to spill into the basin, but did not significantly reduce flows at Manchester Racecourse. One peak flow rating applied across period of record. Ratings at both Manchester Racecourse and Adelphi Weir were developed from flow gaugings taken in the 1970's (ie post flood alleviation scheme). Rating fits well to available gaugings up to ~3.5m. Further modelling and high-flow gauging required to confirm the rating. Gaugings considered to be more reliable after the Manchester Racecourse cableway was renovated in June 1978. Later gaugings taken from footbridge between the two stations. Although there were no high flow gaugings to derive the rating, a check gauging on the rising limb of the October 1980 event at 265 m3/s and approx 2.05m at Adelphi Weir supports the ratings. The January 2008 event (416 m3/s at Manchester Racecourse from the rating) was recorded at approx 375m3/s at the new ultrasonic station at Kearsley upstream (difference in catchment area approx 8%).	Station opened in 1941, some gaps and poor records until 1990 when POT record starts. The Environment Agency hold data from 1976. A single combined AMAX series for 69025 and 69002 is held under 69025 (derived by detailed comparison and analysis of the records from both stations, using the more reliable station for each AMAX event, but checked against the other station). Both stations have had problems at various times, but at least one station appears reasonably reliable for each AMAX for the period presented. AMAX from 1935 to 1940 are not presented as the Adelphi Weir record had some anomalies and Manchester Racecourse was not yet open. AMAX from 1950 to 1963 are entirely from Adelphi Weir - the annual maxima appear reliable, though the record from Manchester Racecourse is missing. Major flooding in Salford in September 1946, with some limited spill around the station. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	The catchment has steep valleys cut into the moors in the upper reaches. The high ground is made up of peat and the valleys consist of sands and gravels. Permo-Triassic sandstones in the south-west with coal measures, grits and sandstones of the Carboniferous series to the north and west overlain by postglacial drift deposits. Considerable urban and industrial land use in the lower sections, including the towns of Bolton, Bury, Rochdale and parts of Manchester. No catchment changes known.	Many abstractions and storage reservoirs. Flood basins upstream of Manchester Racecourse attenuate peak flows - Littleton Road (completed prior to Jan 2008 flood) and Castle Irwell (completed 2017).
69026	Irwell at Kearsley	528.0	SD7542805610	375428.0	405610.0	53°32'47.5664"N 2°22'20.2933"W	53.54655	-2.3723	Irwell	Kearsley	40.6	EA-GMMC	690503	69	1948-01-01		VA				true	false	false	false	false	false	false	true	false	false	false	false	false	SPGEI	2003-07-09	2023-09-30	14.377	2.446	2018-09-05	2018-09-05	318.4	2015-12-26	2015-12-26	3.636	5.915	8.58	31.26	44.23	0.47	7389	7372	99.77				49.4	100.7	212.0	361.9	475.6	1268	1277	0.1079	0.0276	0.5195	0.0697	0.2449	0.0657	0.0603	0.44	0.1511	0.2667		0.3448		0.6552	0.1092	0.0992	0.5198	0.54	0.423	0.905	92.9	37.67	41.5	57.2	11.6	46.45	25.6	221	187	0.15	49.4	519.82	0.881	0.827	0.067	0.1071	0.763	0.767	0.1503	0.845	0.784			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel rated flow site. Brick station building on left bank of the Irwell at Kearsley housing a Seba electric winch for flow gauging.	Commissioned November 2002 to facilitate the operation of Littleton Road storage basin a further 8km downstream of the station in Salford. Originally level only, ultrasonics were installed to provide flow data for FCRM. Ultrasonics are no longer operational and flow data from the site has been re-processed using rating curves.	Flow ratings produced based on a combination of now defunct ultrasonic stage / flow pairs and gaugings together with modelled high flows above stages of 4m (level of maximum gauging). Two ratings across period of record, before and after the December 2015 high flows that significantly changed the bed geometry.	First year of data is 2008.	Largely rural / farmland in upper reaches then becoming more urban through lower reaches upstream of station.
69027	Tame at Portwood	150.0	SJ9069991870	390699.0	391870.0	53°25'24.7493"N 2°08'29.1404"W	53.42354	-2.14143	Tame	Portwood	43.0	EA-GMMC	692423	69	1943-01-01		B			13.5	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGEI	1969-12-30	2023-09-30	4.151	0.11	1973-01-11	1973-01-11	67.72	2021-01-20	2021-01-20	1.3	2.01	2.76	8.249	11.69	0.54	19633	18635	94.917	1943-03-15		63.271	39.6	98.4	238.9	475.1	580.3	1179	1215	0.1232	0.0105	0.3369	0.227	0.2511	0.0602	0.049	0.3439	0.2863	0.2465	0.0333	0.731		0.2357	0.0334	0.2069	0.3892	0.54	0.366	0.898	121.1	42.58	42.5	56.4	11.4	48.47	29.28	259	257	0.27	39.6	146.01	0.919	0.759	0.0604	0.1051	0.771	0.612	0.1537	0.865	0.641	1942..1951		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Curved masonry weir topped with a thin plate draining a heavily urbanised lower catchment.	Station opened in 1943 on an old masonry curved weir topped by a thin plate, 21m wide. Located just downstream of 90 degree bend and 2km upstream of Goyt confluence. Station is downstream of Broomstairs Bridge (69041).	Drop of 5m over the crest, so no drowning at high flows. The weir is flanked by vertical side walls with a steep left bank which prevents bypassing. The right bank is lower, though bypassing is unlikely at the flows recorded. Gravel shoaling occurs at the base of the weir, extending 20m downstream. An old mill cut was closed in 1967 so that the entire flow now passes over the weir. Flow to the old mill (ie. before January 1967) was probably only a small percentage of flood flows, but some uncertainty as no data to confirm. Records from 1943; a model-based calibration was used before being superseded by one based on current metering in 1970. Gaugings carried out from footbridge downstream of weir. Coping stone removed in the flood of Nov-2000 affecting low flow rating. Recent rating reviews and use of hydraulic model increased confidence in flow estimates. Flood Studies Report grade B.	Revised daily flow data from start of record (1/1970) to 10/73 loaded in 2009 due to new rating that has greatly reduced the high flows: previous max GDF on 21/2/70 reduced from 137.9 to 34.9 m3s-1. Full re-rated daily flow record loaded in Oct 2011: main change is reduction in low flows of up to about 20% over 2001-09. Peak flows are excluded for the period March 1946 to late March 1952. There is a gap in the record from March 1946 to March 1948, and the charts from March 1948 to March 1952 appear unreliable, with truncated peaks. This truncation may have been caused by siltation, although this is not now regarded as a problem. After re-rating at both stations, most peak flows are now comparable with Broomstairs upstream (although Portwood AMAX still lower on 06/07/2012 and 29/07/2019). Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	For the most part a narrow, steep sided valley network on Millstone Grit with peat moorland in upper reaches (includes Saddleworth Moor). Underlying geology of Coal Measures and Permian sandstones and mudstones overlain by Boulder Clay lower down. Sheep grazing in the headwaters; lower catchment heavily urbanised (east Manchester). No catchment changes known.	Low flows dominated by effluent returns. Many impoundments in the upper reaches control 25% of the catchment in total. The largest of these are Dovestone and Chew Reservoirs on the Chew Brook (draining Saddleworth Moor), which alone control 15% of the catchment.
69028	Mersey at Brinksway	517.36	SJ8846990036	388469.0	390036.0	53°24'25.2434"N 2°10'29.7017"W	53.40701	-2.17492	Mersey	Brinksway	33.5	EA-GMMC	692524	69	1955-01-01		VA				true	true	true	true	false	true	false	true	false	false	false	false	false	SPGEI	1974-01-01	2023-09-30	11.935	1.12	1976-07-29	1976-07-29	188.0	1991-12-21	1991-12-21	3.32	5.41	7.9	24.9	33.7	0.55	18170	18140	99.835	1955-10-27		139.845	39.0	109.3	277.2	486.4	635.5	1183	1199	0.104	0.0148	0.4661	0.2384	0.141	0.0802	0.0446	0.4416	0.2863	0.1358	0.0366	0.7292		0.2342	0.0244	0.2235	0.3409	0.53	0.409	0.892	137.1	39.23	40.5	54.2	10.9	52.2	31.91	289	267	0.19	39.0	517.28	0.709	0.756	0.0441	0.0564	0.744	0.597	0.0815	0.842	0.64			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station in Stockport.	Velocity-area station in Stockport opened in 1955. Immediately downstream of a bridge. Station is downstream of the confluences of the Goyt, Etherow, and Tame. Primarily a high flow site operationally, due to the insensitive nature of low flow open channel control. Station used for flood forecasting and warnings, data used for management of flood storage basins at Didsbury Gates and Sale Ees Gates.	A gravel bar and associated mid-channel bar downstream act as control at most flows, with a small drop at Cheadle Weir (an old mill weir) approx 130m downstream of the station. All flows contained. Some occasional blockage of the inlet pipe, thought not to reduce flow estimates significantly. Rating developed from gaugings and hydraulic model. The top 3 limbs of the current rating have been applied over period of record. Some changes are likely to have occurred to the rating over time due to deposition (e.g. after the December 1991 event) and vegetation growth. No high flow gaugings historically, some around QMED now taken by ADCP.	The highest event, in 1973, corresponds with the only known flooding in Stockport from the Mersey. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Upper catchment in the Pennine hills. Geology comprises mostly peat-covered Millstone Grit in the headwaters, Coal Measures, and Boulder Clay in the lower catchment. Catchment includes towns such as Glossop and Chapel-en-le-Frith upstream, with parts of Greater Manchester, including Stockport and Tameside lower down. The lower catchment has mixed farmland, urban and industry.	Major reservoirs upstream - the Longendale Chain (plus Arnfield) on the Etherow, and Fernilee and Errwood reservoirs on the Goyt. Errwood Reservoir was completed in 1967. All other major reservoirs were built before the station was opened in 1955.
69030	Sankey Brook at Causey Bridges	154.0	SJ5874892213	358748.0	392213.0	53°25'30.3110"N 2°37'20.1160"W	53.42509	-2.62225	Sankey Brook	Causey Bridges	7.4	EA-GMMC	694039	69	1953-01-01		VA			7.1	true	true	false	true	false	false	false	true	false	false	false	false	false	PEI	1977-01-01	2023-09-30	2.595	0.331	1978-07-25	1978-07-25	37.49	2021-01-20	2021-01-20	0.711	1.19	1.688	5.39	7.577	0.52	17074	17034	99.766	1953-09-01		28.989	9.8	29.4	47.0	76.9	177.0	903	903	0.0867	0.3057	0.2355	0.0151	0.345	0.0503	0.5207	0.1184	0.0013	0.3019	0.2819	0.0023		0.7158	0.3347	0.074	0.5599	0.38	0.471	0.941	24.3	33.24	33.2	46.0	11.4	24.69	13.4	51	147	0.15	9.8	147.74	1.299	0.987	0.1769	0.1411	0.788	0.902	0.1628	0.867	0.896	1952..1982	1953-09-01..1983-07-31	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in low-lying catchment containing some large urban areas.	Velocity-area station opened 1953. A trench-piled bed control and stone pitched left bank that was built in July 1983 acts as a weir up to 0.35m, above which it drowns.	The channel bed is laden with stones and boulders. The highest flows are above bankfull, at 2.66 m on the right bank, but with the possibility of bypassing upstream before this. Susceptible to siltation and weed growth. Backwater problems from sluice operation ceased with closure of adjacent canal in 1976. Rating affected by land drainage improvement works downstream in 1976 and 1977. Subsequent channel regrading required frequent recalibration between 1977 and 1983, and a significant change occurred from the high flows of spring 1981. Multiple ratings applied across period of record. Few spot gaugings at high flows, some scatter. Gauging on 26/09/2012 carried out at Alder Roadbridge upstream of the spill/bypass.	Revised daily flow data from start of record (1/1977) to 9/2006 loaded in 10/2009: flows from 17/6/1977 to 30/8/1977 increased by approx 2.5 times. Previous max GDF on 28/12/1978 reduced from 38.5 to 28.9 cumecs, other differences generally minor. Peak flows rejected until July 1983 when the control stabilised the rating. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	A low lying catchment of gentle relief. Coal Measures within the North overlain by sand and peat; Sherwood Sandstone in the South, overlain by Boulder Clay. Mixed farmland predominates but contains urban areas, including St Helens in the centre. Possible that there was a small increase in catchment area in late 1980s or very early 1990s with diversion of a ditch crossing Sankey Valley Park to join Sankey Brook upstream of the gauging station.	Several small lakes (e.g. Newton Lake) and meres. Industrial abstraction and effluent.
69032	Alt at Kirkby	90.1	SJ3916098332	339160.0	398332.0	53°28'41.4479"N 2°55'05.4446"W	53.47818	-2.91818	Alt	Kirkby	8.9	EA-CL	694744	69	1963-01-01		MIS	27.7		11.0	true	true	true	true	false	false	false	true	false	false	false	false	false	GEI	1977-10-01	2023-09-30	1.458	0.303	2000-07-16	2000-07-16	23.62	2021-01-20	2021-01-20	0.517	0.702	0.951	2.98	4.09	0.53	16801	16582	98.697	1963-05-17		17.513	10.6	20.9	33.9	51.4	96.2	895	860	0.0965	0.1599	0.2392	0.0108	0.4755	0.0643	0.2657	0.156	0.0134	0.4961	0.7916			0.2084	0.3705	0.0684	0.4684	0.37	0.486	0.983	13.2	32.66	32.1	43.4	11.0	15.26	8.12	35	319	0.23	11.8	96.61	1.306	0.942	0.2346	0.2649	0.878	1.015	0.2712	0.905	0.965	1962..1985	1963-05-17..1977-09-06	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Open channel, velocity area station with non-standard shallow V bed control which drowns at a low level.	A non-standard shallow V bed control (side slopes 1:20) opened in September 1977. This superseded an open channel, velocity area station (1963) which suffered from erosion and deposition of silt. There is a broad-crested weir 800m d/s.	The weir drowns at a low level and all high flows are measured under drowned conditions. No bypassing reported. Siltation may cause inlet pipe blockage and lag between stilling well and river level. Transducer (PTX) in-river from 26 Nov 1998 to 24 Nov 2003 and installed in c2015 as comparison with stilling well record. Gaugings taken from upstream footbridge using bridge gauging equipment or an ADCP. Separate peak flow ratings apply before and after the construction of the weir in 1977, and there is a good fit to gaugings in both periods, although no pre-weir gaugings were taken during high flows.	Gap in data 1/4/1986 to 30/10/1986 while station repaired after vandalism. Record from open channel station (i.e. before weir was built in 1977) of unknown quality due to silt deposition and removal and lack of high flow gaugings. AMAX and POT data are therefore excluded from analysis pre-1977. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7). Missing data in November 2022 due to blockage of stilling well inlet pipe affecting primary and backup measurement.	Very flat catchment; boundary on SW side difficult to define. Geology mostly of blown sand deposits with Boulder Clay over Sherwood Sandstone. Highly urbanised, containing parts of north Liverpool and Kirkby. No significant catchment changes.	Industrial abstractions and discharges. Large sewage treatment works upstream at Fazakerley can cause fluctuations in daily mean flows.
69033	Alt at Sefton	100.0	SD36020138	336020.0	401380.0	53°30'18.7194"N 2°57'57.9837"W	53.5052	-2.96611	Alt	Sefton	3.1	EA-CL		69	1953-01-01	1975	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1954-10-01	1975-05-31	2.303	0.623	1959-10-03	1959-10-14	13.71	1958-07-02	1958-07-02	0.878	1.416	1.857	4.074	5.324	0.66	7548	2343	31.041				6.3	17.4	31.3	50.0	96.2	882	857	0.0866	0.17	0.2424	0.0094	0.4757	0.0552	0.2783	0.1618	0.0114	0.4894	0.8227			0.1773	0.4022	0.0582	0.4608	0.37	0.502	0.985	12.8	31.78	32.1	43.5	10.9	20.24	11.77	33	328	0.24	6.3	113.53	1.366	0.945	0.2384	0.2691	0.876	1.001	0.2747	0.901	0.974			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A vertical-area station in a low relief catchment.	V/A station 11.5km u/s of tidal gates at Hightown and unaffected by their operation. Very vandal prone.		Low to medium flows dominated by Liverpool effluent (augmentation).	Low relief catchment with SW boundary difficult to define. Blown sands and Boulder Clay over Sherwood Sandstone. Heavily urbanised (~60%).
69035	Irwell at Bury Bridge	155.0	SD79721088	379720.0	410880.0	53°35'38.7532"N 2°18'28.3517"W	53.5941	-2.30788	Irwell	Bury Bridge	75.0	EA-GMMC		69	1953-01-01	1998-03-17	VA			90.1	true	false	false	false	false	false	false	false	false	false	false	false	false	SPGEI	1976-01-01	1998-03-17	5.104	0.0	1988-06-19	1990-08-11	205.2	1991-12-21	1991-12-21	0.21	1.361	2.495	12.2	18.5	0.33	8112	8045	99.174				72.8	146.0	274.4	379.8	475.6	1339	1352	0.1019	0.0184	0.6459	0.0466	0.1552	0.0687	0.0402	0.5136	0.2057	0.1633		0.5951		0.4049	0.0553	0.0707	0.4736	0.54	0.425	0.94	113.0	37.36	41.9	59.2	11.5	31.84	17.97	268	200	0.11	73.1	156.56	0.695	0.77	0.0458	0.0614	0.671	0.723	0.0935	0.769	0.764			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Vertical-Area station which was replaced by Bury Ground (69044) in 1996.	VA station with an old broad-crested weir, oblique to the river, as its (insensitive) control.	A rating, based on d/s gaugings, applicable to about 100 cumecs was developed in 1979. However, subsequent gaugings were not consistent; calibration under review. 1995 peak under review.	Runoff influenced by storage reservoirs and abstractions.	Catchment mostly u/s of the urban and industrial areas which dominate at d/s station at Adelphi Weir (69002). Geology mainly Boulder Clay over Lower Coal Measures and Millstone Grit.
69037	Mersey at Westy	2030.0	SJ6283388352	362833.0	388352.0	53°23'26.4762"N 2°33'37.1791"W	53.39069	-2.56033	Mersey	Westy	2.5	EA-GMMC	693976	69	1977-01-01		US				true	false	false	false	false	false	false	true	false	false	true	false	false	SPGEI	1986-01-01	2023-09-30	36.701	0.089	1995-06-24	1995-06-24	214.1	2000-10-30	2000-10-30	9.43	19.94	29.02	71.88	92.6	0.59	13787	10614	76.986				4.8	26.2	130.3	370.3	635.5	1068	1077	0.1116	0.0587	0.4282	0.0863	0.2903	0.0724	0.1299	0.3743	0.1168	0.2937	0.2036	0.3112		0.4852	0.1726	0.1046	0.5195	0.46	0.441	0.925	75.4	36.16	37.0	50.1	11.1	97.86	56.15	170	250	0.15	4.9	2027.09	1.842	0.638	0.1487	0.1231	0.769	0.822	0.1686	0.872	0.839			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic multi cross path station which replaced the downstream site of Howley, upgraded to velocity index in 2017.	Ultrasonic, multipath, cross path station replacing an earlier unsatisfactory site at Howley (1.5km d/s). Numerous equipment faults, failed 2015 and replaced by index velocity sidelooker in Nov 2017.	Experiences abstraction, augmentation, tidal influence and regulation. Runoff probably substantially modified, at least temporally.	Limited reliability of ultrasonics, significant gaps in flow record. Out of use 27/02/2007 to 25/06/2008 whilst being upgraded. Equipment failure 19/11/2008 to 18/03/2009, 20/04/2010 to 26/08/2012 and ultimately 19/04/2015. Anomalous and missing data in 2013 due to repair works on Manchester Ship Canal. Sidelooker installed Nov 2017, some gaps when affected by weed (e.g. May to Sept 2018). Positioned lower in the water for 2019. Anomaly around 01/06/2020 due to repairs at Howley weir sluices. Data not held from 17/03/2022 to 30/09/2022 because of the impact of instrument failures and sluice management on data quality. Outage from 10/06/2023 to 26/07/2023 due to lightning.	Large catchment containing much of Manchester. The main tributaries arise on peat moorlands to W and N of Manchester. High ground mostly Millstone Grit or Coal Measures. The centre and south of the catchment is underlain by Sherwood Sandstones and Mercia mudstones blanketed by Boulder Clay, terrace gravels and lowland peat. Diverse catchment, extensively urbanised.	Flow comprises Ship Canal overflow only; flows need to be combined with an ultrasonic site on the Ship Canal at Latchford, Warrington, available from the Environment Agency. Latchford flows understood to be of good quality although the record is short (1997-2002) and no gaugings are available for validation.
69039	Medlock at New Viaduct Street	55.9	SJ863987	386300.0	398700.0	53°29'05.4077"N 2°12'28.5261"W	53.48484	-2.20792	Medlock	New Viaduct Street	42.4	EA-GMMC		69	1949-01-01	1960	B				true	false	false	false	false	false	false	false	false	false	false	false	false		1949-12-01	1959-09-30	1.156	0.057	1955-08-31	1959-06-10	13.42	1956-08-18	1956-08-18	0.142	0.481	0.765	2.492	3.511	0.39	3591	3338	92.955				48.3	80.3	158.4	267.9	376.0	1067	1048	0.2101	0.0277	0.2705	0.0047	0.4666	0.0734	0.0739	0.3606	0.0114	0.4781	0.1031	0.1065		0.7904	0.0085		0.7732	0.55	0.396	0.967	66.3	34.88	38.4	52.4	11.2	20.54	11.47	162	233	0.4	48.3	48.08	0.953	0.738	0.0928	0.226	0.817	0.921	0.3071	0.898	0.939			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station closed in 1960 due to continuing vandalism. Superseded by downstream of 69020.	Broad-crested weir.		Sporadic flow record (of limited quality).
69041	Tame at Broomstairs	113.0	SJ9372695361	393726.0	395361.0	53°27'17.8762"N 2°05'45.4140"W	53.45497	-2.09595	Tame	Broomstairs	77.0	EA-GMMC	692422	69	1974-03		USVA			11.0	true	true	true	true	false	false	false	true	false	false	false	false	false	S	1974-03-01	2023-09-30	3.393	0.054	1990-08-05	1990-08-05	55.07	2021-01-20	2021-01-20	1.004	1.64	2.29	6.81	9.373	0.55	18111	18064	99.74	1968-06-13		49.96	75.4	128.1	286.6	485.9	580.3	1255	1290	0.1087	0.0083	0.3443	0.286	0.1946	0.0534	0.039	0.3502	0.3585	0.1822		0.8393		0.1607	0.0345	0.2608	0.2415	0.55	0.368	0.887	135.6	43.7	44.5	58.9	11.6	34.94	20.28	295	252	0.25	79.2	115.85	0.78	0.739	0.0515	0.0793	0.752	0.433	0.1196	0.85	0.476			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station from 1995, with mill weir. Flow regime dominated by effluents at low flows and by impoundments in the upper reaches across the regime.	Broomstairs Bridge station opened June 1968 but was a poor site due to under-mining of the timber capping on the weir, which prevented an accurate stage-discharge relationship. The weir deteriorated over time and completely failed in August 2004. An ultrasonic multi-path gauge (Broomstairs ultrasonic) was installed in February 1995 until it was switched off for good in March 2017. Weed growth was a problem in the ultrasonic section during the summer which required regular maintenance and lead to regular path and flow drop outs. There is very little growth in the section immediately u/s of the weir. Works began in April 2010 and finished in July 2010 to install a stainless steel non-standard thin plate with a low flow rectangular notch which also included extensive repair work to the downstream face of the structure.	No bypassing, as all flows are through the bridge immediately upstream from which gaugings are made. Three peak flow rating accross the period based on current meter gaugings at low flows, from the bridge using a handline with a light weight (so may over-estimate) at medium flows and, model and ultrasonic flows at higher flows. Ultrasonic from Feb 1995. Flows from rating at Broomstairs Bridge to February 1995, from ultrasonic station thereafter. Some early problems with the ultrasonic station mean POT data have been checked and amended using the rating. Performance of the ultrasonics remains under review in relation to the highest flows. Rated and ultrasonic flows have been compared over the common period of record, and with Portwood downstream (69027). Both stations currently open, Broomstairs Bridge as levels-only.	Daily mean flows pre-ultrasonic record are poor. Erroneous daily flow data July and August 2006 removed. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). After re-rating at both stations, most peak flows are now comparable with Portwood downstream (although Broomstairs AMAX still higher on 06/07/2012 and 28/07/2019). Timing of WY22/23 AMAX validated despite outage from 27/06/2023 - 04/08/2023.	Geology of Millstone Grit and Coal Measures with peat cover on high moors. Steeper valley sides drift free, otherwise mixed glacial drift cover. Catchment drains the northern Peak District moors, including Saddleworth Moor but is heavily urbanised in the lower reaches, which include parts of Greater Manchester. No significant catchment changes.	Low flows dominated by effluents. Many impoundments in the upper reaches control 33% of the catchment in total. The largest of these are Dovestone and Chew Reservoirs on the Chew Brook (draining Saddleworth Moor), which alone control 20% of the catchment.
69042	Ding Brook at Naden Reservoir	2.2	SD85001746	385000.0	417460.0	53°39'12.3082"N 2°13'42.3203"W	53.65342	-2.22842	Ding Brook	Naden Reservoir	276.0	EA-GMMC	690268	69	1982-01-01	2005-01-24	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1982-04-02	2003-12-31	0.071	0.005	1984-07-24	1995-09-22	1.394	1991-12-21	1991-12-21	0.011	0.025	0.04	0.17	0.231	0.42	7944	7708	97.029				263.5	346.8	430.2	469.4	475.6	1368	1488			0.3942	0.5445		0.0017		0.3097	0.6887			0.9334		0.0666		0.9625		0.57	0.401	1.0	139.9	41.98	43.1	61.6	11.9	2.36	1.29	417	161	0.69	263.5	2.17	0.13	0.71	0.0138	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Thin plate weir in a mainly natural catchment. Station closed in 2005.	Compound rectangular thin plate weir (crest lengths 0.5, 2.48, 7.76m) on an inflow stream to the reservoir.	Steep approach channel with gravel trap; check gauging difficult. All flows contained, fully modular. Theoretical calibration.	Effective record starts 13/7/82 following fitting of new crest plates. Leaking as of 2002.	High relief moorland catchment on Coal Measures overlain by peat. Rough grass, bracken, scrub and heather; sheep grazing. Disused quarry high up the catchment. Natural catchment.
69043	Irk at Collyhurst Weir	72.3	SJ8485099691	384850.0	399691.0	53°29'37.3304"N 2°13'47.3631"W	53.4937	-2.22982	Irk	Collyhurst Weir	33.0	EA-GMMC	690611	69	1995-01-01		B			17.0	true	true	true	true	false	false	false	true	false	false	false	false	false		1995-04-27	2023-09-30	1.949	0.547	2003-11-10	2003-11-10	23.43	2019-03-16	2019-03-16	0.916	1.168	1.405	3.504	4.821	0.6	10384	10373	99.894	1995-04-27		28.326	29.8	72.7	104.9	175.7	246.8	1049	1026	0.1723	0.0277	0.2135		0.5659	0.0716	0.0419	0.2437	0.0025	0.6309	0.0736	0.0428		0.8836	0.5198		0.4802	0.57	0.51	0.924	45.3	31.73	36.2	49.6	11.0	20.57	11.58	116	229	0.35	29.8	72.3	0.889	0.867	0.1143	0.2841	0.814	0.964	0.3899	0.897	0.965	1994		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Curved non-standard round nosed broad-crested weir to replace Scotland Weir (69003). Gauges a catchment with moorland headwaters but urbanised lower catchment.	Curved non-standard round-nosed broad-crested weir, 2m high, at the end of a formalised brick-walled reach. Opened April 1995 to replace Scotland Weir (69003).	Stilling well with shaft encoders. External pressure sensor in river. Weir is insensitive but better than Scotland Weir. Gaugings carried out using a hand-line since 1985 (before station opened); no room for a cableway for high flow gaugings. Two peak flow ratings applied across period of record developed from current meter gaugings since 04/10/1995, with modelled top-end. Algal growth up to 5cm deep can occur on weir crest.	Water year 1994/1995 rejected as the AMAX is from the partial water year at the start of the record. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10). Outstation failure 14-15 January 2023, no backup available.	Solid geology; Coal Measures in the headwaters with Sherwood Sandstone and Permian marls in the lower catchment. Catchment entirely overlain by Boulder Clay and sands and gravels. The river rises in open moorland before entering the densely populated and urbanised Lower Irk catchment, which includes Oldham and Manchester. No catchment changes known.	Many industrial abstractions and discharges and one small reservoir upstream.
69044	Irwell at Bury Ground	139.9	SD7998711393	379987.0	411393.0	53°35'55.3896"N 2°18'13.9487"W	53.59872	-2.30387	Irwell	Bury Ground	79.8	EA-GMMC	690160	69	1992-08-01		B VA			17.0	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGEI	1995-11-22	2023-09-30	3.85	0.406	1996-09-23	1996-09-23	117.0	2015-12-26	2015-12-26	0.709	1.35	2.065	8.67	13.2	0.41	10175	9928	97.572	1995-11-22		113.145	73.4	166.0	286.8	383.8	475.6	1354	1367	0.0873	0.0185	0.6687	0.052	0.1389	0.0689	0.029	0.5185	0.2273	0.1474		0.6382		0.3618	0.0582	0.0791	0.4211	0.54	0.43	0.945	118.0	37.4	42.0	59.8	11.5	31.24	18.85	280	221	0.12	73.4	139.97	0.686	0.791	0.0437	0.0554	0.644	0.788	0.0874	0.753	0.809	1972		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with broad-crested weir as control. Replaced Bury Bridge (69035) in 1995.	Velocity area station, 22m wide section with good approach, opened November 1995 with a pre-existing curved broad-crested mill weir as the control. Replaced Bury Bridge (69035), 1.5km downstream; Kirkless Brook enters between the two stations. Bury Bridge and Bury Grounds overlapped from November 1995 to March 1998, and included high flows in November 1996. Stages are closely correlated.	The curved weir is 28m wide, crest is in poor condition. Weir doesn't drown due to 3m drop over crest. The inlet pipe was extended to prevent silt blockage, and the level re-surveyed. Level readings prior to August 1998 were then lowered by 0.022m to make them consistent with later records. High flow gaugings carried out by cableway. A stage-stage relationship was derived to generate equivalent stages at Bury Grounds for the period of record at Bury Bridge, and the present Bury Grounds rating applied. One peak flow rating applied across period of record, derived from current meter gaugings.	POT and AMAX data are presented for Bury Grounds including the period of record at Bury Bridge. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Geology is post-glacial deposits over predominantly Millstone Grit, with some Coal Measures. A moderately urbanised catchment with steep moorland headwaters in the south Pennines; includes urban areas of Bury and Rawtenstall. No catchment changes known.	Runoff influenced by storage reservoirs (Haslingden Grane system and Ogden, Clowbridge), abstractions and effluent returns.
69045	Bollin at Bollington Mill Total	256.7	SJ7305287054	373052.0	387054.0	53°22'46.7166"N 2°24'23.6267"W	53.37964	-2.40656	Bollin	Bollington Mill Total	19.0	EA-GMMC	693515	69	2000-09		FV				true	true	true	true	false	false	false	true	false	false	false	false	false	SPGEI	2009-11-19	2023-09-30	4.223	0.936	2011-10-01	2011-10-01	45.63	2021-01-20	2021-01-20	1.295	2.071	2.87	8.642	11.6	0.59	5064	4964	98.025	2000-09-25		36.361	18.9	44.6	83.3	281.5	483.1	865	881	0.1523	0.0882	0.5574	0.0041	0.1857	0.0974	0.2181	0.5144	0.0133	0.1475	0.3312	0.1654		0.5034	0.2449	0.0135	0.6171	0.43	0.507	0.946	56.4	32.57	31.7	42.4	10.3	49.36	26.18	124	302	0.25	18.9	256.76	0.872	0.83	0.1153	0.0456	0.654	1.067	0.0791	0.82	1.003	1999		gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir station installed 19/09/2000 as a replacement for 69006 Bollin at Dunham Massey flow measurement station. Flows are combined main, mill race and fish pass since 2009.	The control is an 11.6m wide BS Flat V weir tapered downstream face. Original mill race takes approx. 10% of flows and Larinier fish pass (installed in 2009 with non-standard Crump on intake), approx. 25% of flow at low flows. Station added to peak flows dataset in August 2024 (WINFAP Files v13).	Flows contained and modular to bank full at 2m. Mill race on right bank has been present since the station was opened and takes approximately 10% of flow under low flow conditions. The thin plate weir at the entrance of the mill race regularly becomes blocked with debris, this needs regular maintenance. Flows for the mill race account for roughly 10% of the main river when the thin plate is working, above 0.5m the structure is acting as an orifice and the % of flow going down the mill race reduced. A Nivus PCM4 bed mounted sensor was installed in October 2009 and has provided useful information on the characteristics of the Mill Race in high flow conditions. The mill race backs up from the main channel at levels above 0.8m at the main weir meaning that flows are restricted to around 1.25m3/s. Pre-2009, flows were calculated using the sum of the flat V weir for the main channel, and the thin plate for the Mill race. In 2009 a Larinier fish pass was constructed on the left bank approximately 40m upstream of the station which takes approximately 25% of the flow at Q95, but accuracy of measurement at intake Crump was compromised during construction.	The NRFA holds the combined record (main channel, mill race and fish pass), which has been produced since 19/11/2009. EA hold earlier data for the main channel.	Mixed geology but with extensive Drift cover (some Millstone Grit exposed in headwaters). Land use is very mixed - a predominantly rural catchment but with Macclesfield below the headwaters and other urban centres. Reservoirs and many industrial abstractions and discharges affect low flows particularly.	Very responsive regime. Reservoirs and many industrial abstractions and discharges affect low flows particularly.
69046	Bradshaw Brook at Bradshaw Tennis Club	36.87	SD7333612222	373336.0	412222.0	53°36'21.1421"N 2°24'15.9905"W	53.60587	-2.40444	Bradshaw Brook	Bradshaw Tennis Club		EA-GMMC	690470	69	2000-10		B				true	true	false	true	false	false	false	true	false	false	false	false	false		2000-08-12	2022-07-31	0.877	0.135	2017-05-11	2017-05-11	25.25	2015-12-26	2015-12-26	0.248	0.309	0.366	2.048	3.394	0.43	8024	7774	96.884	2000-08-12		22.166	97.1	166.8	257.3	351.0	413.2	1390	1384	0.2262	0.0082	0.5761	0.1067	0.0569	0.1211	0.0533	0.5443	0.1834	0.0632		0.449		0.551	0.0378	0.1592	0.6416	0.51	0.345	0.781	101.3	46.91	44.8	61.3	12.3	13.33	7.4	254	185	0.21	97.1	36.87	0.287	0.836	0.0222	0.0146	0.59	0.418	0.0229	0.748	0.434	1999		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Short-crested weir gauging a predominantly Millstone Grit catchment with urban lower reaches.	Station opened August 2000 on an existing industrial short-crested weir under a bridge on a slight bend with long straight approach channel.	Station not bypassed and thought not to drown. The higher flows have been gauged off a bridge upstream. Three peak flow ratings applied across period of record based on current meter gaugings and ADCP gaugings. Rating extrapolated beyond highest gauging using velocity extrapolation method.	No data after 01/08/2022 pending instrument replacement. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Geology of Millstone Grit overlain with peat moorland in headwaters, with Boulder Clay and coal measures in the urban lower parts. No catchment changes known.	Station is just downstream of the Bradshaw Valley Reservoir system of Entwhistle, Wayoh, and Jumbles for water supply and compensation.
69047	Roch at Littleborough	14.8	SD9401216543	394012.0	416543.0	53°38'43.2944"N 2°05'31.3974"W	53.64536	-2.09205	Roch	Littleborough		EA-GMMC	690206	69	1993-12-02		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		1993-12-02	2023-09-30	0.353	0.001	1995-08-13	1995-09-14	9.613	2019-03-16	2019-03-16	0.043	0.141	0.214	0.726	1.08	0.53	10895	10665	97.889	1993-12-02		9.484	142.1	185.5	284.5	404.8	474.3	1282	1353	0.0288	0.0091	0.518	0.3156	0.0793	0.021	0.0582	0.4927	0.3242	0.0754		0.81		0.19		0.2467	0.2429	0.57	0.475	0.89	138.8	35.0	48.8	68.8	11.9	7.54	3.66	292	246	0.37	142.1	14.78	0.41	0.634	0.038	0.0165	0.508	0.34	0.0341	0.642	0.427	1993..1995	1993-10-01..1996-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on long straight engineered channel reach.	Velocity area station opened December 1993 as a level-only station with no formal control. The channel has been engineered both upstream and downstream of the station giving a long, straight profile.	History of bed movement affecting whole flow range, but not thought to change the high flow regime by more than the criteria for acceptance in the NRFA Peak Flow data holdings. A flood alleviation scheme in 2003 dredged the channel and erected new flood walls. The gradient of the bed is quite steep, leading to high velocities. A large shoal upstream of the bridge was identified after the high flows experienced in late 2009, and was subsequently removed. Two peak flow ratings across period of record derived using low flow current meter gaugings and high flow ADCP gaugings.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). Gauged daily flows from 13/05/2023 to 01/09/2023 are affected by silting of the stilling well.	Geology mostly Coal Measures within Millstone Grit to the Northeast and Northwest. Peat overlays geology in moorland hilltops; mixed glacial drift in the lower catchment. No catchment changes known.	Some small reservoirs, including Blackstone Edge.
69048	Tame at Uppermill	40.6	SD9949705118	399497.0	405118.0	53°32'33.7340"N 2°00'32.6200"W	53.5427	-2.00906	Tame	Uppermill		EA-GMMC	692418	69	1998-07		MIS				false	true	false	true	false	false	false	false	false	false	false	false	false																				1998-07-10		21.884	155.2	214.9	310.3	439.6	494.4	1318	1359	0.1121	0.0084	0.5587	0.2172	0.065	0.0418	0.0618	0.5266	0.3131	0.039		0.9682		0.0318		0.28	0.049	0.57	0.388	0.906	145.9	43.3	48.0	62.7	11.8	15.07	6.84	317	240	0.19	159.1	40.6	0.526	0.795	0.0362	0.0103	0.467	0.537	0.0227	0.603	0.606	1997..2017		cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard weir draining catchment consisting of Millstone Grit and Coal Measures.	Station opened in July 1968 on an existing non-standard weir with a low, sharp metalwork crest and gradual downstream stone slope. Used for abstraction licence management and flood warning.	Station has a stilling well with shaft encoder. Higher flows may spill onto a sports field on the left bank. Gaugings were not initiated until 2002. Peak flow rating derived using low flow current meter gaugings and high flow ADCP gaugings with modelled top end.	Re-rated period of record released in September 2021 (WINFAP Files v10) and September 2022 (WINFAP Files v11). Both WY1997/1998 and WY2017/2018 are rejected due to substantial under-estimation of the true AMAX.	Geology of Millstone Grit and Coal Measures with peat cover on high moors. Steeper valley sides drift free, otherwise mixed glacial drift cover. No catchment changes known.	Several abstractions and discharges, the main influence being from the reservoirs - Castleshaw (Upper and Lower) and the Denshaw Valley system.
69803	Roch at Rochdale	111.0	SD882127	388200.0	412700.0	53°36'38.5847"N 2°10'47.3698"W	53.61072	-2.17982	Roch	Rochdale		EA-GMMC	690203	69	1993-02		B				true	true	true	true	false	false	false	true	false	false	false	false	false		1993-02-26	2023-09-30	2.796	0.178	2010-06-15	2010-06-15	50.41	2015-12-26	2015-12-26	0.466	0.901	1.49	6.56	9.486	0.44	11174	11118	99.499	1993-02-26		44.859	109.1	147.4	239.4	380.8	474.3	1274	1306	0.0565	0.0201	0.5371	0.12	0.2192	0.0331	0.0641	0.4741	0.1613	0.2478		0.2897		0.7103	0.128	0.1292	0.2913	0.57	0.47	0.896	109.6	34.22	45.2	61.9	11.6	18.74	10.78	250	221	0.19	109.1	110.53	0.828	0.79	0.0684	0.1019	0.754	0.717	0.1393	0.827	0.717	1992		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard broad-crested weir on artificial channel. Many small reservoirs in the catchment influence the flow regime.	Station opened February 1993 on a non-standard, round-nosed broad-crested weir 12.2m wide with crest length of 1.25m and sloping downstream face. Side walls on approach 3.4m high. Situated on a reach of artificial channel.	There is a drop of several metres at the weir so will not drown. No bypassing. There is no cableway, and gaugings are taken upstream at Oaken Road footbridge. One peak flow rating applied across period of record confirmed by gaugings and hydraulic modelling. Primary level measurement by pressure sensor in stilling well superseded by external radar in June 2024.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	The upper catchment is peat-covered moorland, consisting mostly of coal measures and Millstone Grit. The lower part of the catchment is highly urbanised and contains Rochdale. No catchment changes known.	Many small reservoirs in headwaters, controlling less than 25% of catchment.
70001	Douglas at Rivington Reservoirs	39.4	SD631119	363100.0	411900.0	53°36'08.4804"N 2°33'32.7294"W	53.60236	-2.55909	Douglas	Rivington Reservoirs	112.8	EA-CL		70	1951-01-01	1973	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1951-10-01	1973-09-30	0.382	0.0	1952-07-12	1954-04-03	15.37	1967-12-28	1967-12-28	0.125	0.279	0.289	0.373	0.92	0.67	8036	8005	99.614				114.3	138.1	242.8	363.1	456.4	1230	1257	0.0559	0.0178	0.5933	0.2158	0.0334	0.1311	0.087	0.282	0.3833	0.0187		0.855		0.145		0.3442	0.4712	0.51	0.399	0.617	100.6	41.1	37.8	51.2	11.5	9.76	5.1	245	236	0.53	114.3	22.73	0.143	0.624	0.0147	0.0059	0.648	0.223	0.0073	0.77	0.198			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Outflow from Rivington reservoirs.
70002	Douglas at Wanes Blades Bridge	198.0	SD4762212572	347622.0	412572.0	53°36'25.4645"N 2°47'35.0922"W	53.60707	-2.79308	Douglas	Wanes Blades Bridge	4.4	EA-CL	700306	70	1966-01-01		US	32.0			true	true	true	true	false	false	false	true	false	false	true	false	false	SRPEI	1973-02-15	2020-06-26	4.367	0.01	1983-02-25	1983-02-25	71.6	2015-12-26	2015-12-26	1.13	1.99	2.88	9.2	12.72	0.51	17299	16581	95.849	1966-06-17		44.8	6.4	29.7	80.0	177.3	456.4	1023	1028	0.0892	0.1886	0.4148	0.0298	0.2578	0.0933	0.363	0.2164	0.054	0.251	0.0573	0.1227		0.82	0.1647	0.062	0.7058	0.51	0.459	0.88	49.0	33.4	35.7	47.9	11.4	43.61	20.06	97	260	0.07	7.1	189.78	1.101	0.789	0.1159	0.1005	0.763	0.895	0.1337	0.859	0.89			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station with weir. Flow regime affected by headwater reservoirs which divert flow.	Station opened in 1969 as velocity-area station with bed control. Non-standard shallow V weir installed in 1984. Station affected by tides so ultrasonics added in 1996.	Installation of the weir in 1984 stabilised the control at low flows, but the weir is still drowned by tides. Scatter in gaugings is so large that peak flows are only presented since 1996. High flow gaugings are taken from a road bridge upstream or with portable cableway, or using an ADCP at the station. Rating also affected by weed growth downstream. Bypassing prevented by road embankments. Flood Studies Report grade B.	Peak flow data from the ultrasonic are thought to be acceptable. Pre-1996, peak flows are less reliable and are not presented. During the 2012/2013 AMAX event it is suspected a tree was blocking two ultrasonic paths. During the 2015/2016 AMAX event it is suspected there was a fault with half the ultrasonic paths. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9). No flows after 26/06/2020 due to telemetry problem.	Moderate to low relief catchment. Geology is Boulder Clay, peat and blown sand, underlain by Coal Measures in upper parts and Permo-Triassic sandstones lower down. Land-use predominantly rural; urban areas include Wigan and Skelmersdale. No significant catchment changes.	Flow regime and effective catchment modified by the Integrated Complex of eight reservoirs at Rivington which divert flow from the natural catchment of the River Yarrow to River Douglas. Wigan Flood Control Scheme (catchment area ~67.3km2) has restricted flows since March 2011.
70003	Douglas at Wigan	55.3	SD5861706027	358617.0	406027.0	53°32'57.2452"N 2°37'33.7873"W	53.54923	-2.62605	Douglas	Wigan	31.7	EA-CL	700325	70	1973-01-01		US			22.4	true	true	false	true	false	false	false	true	false	false	false	false	false	SRPEI	1977-01-01	2023-09-30	1.261	0.257	1977-09-03	1977-09-03	21.7	2015-12-26	2015-12-26	0.411	0.627	0.834	2.51	3.545	0.57	17074	16180	94.764	1973-10-05	2011-09-30	17.703	33.7	74.7	121.4	313.0	456.4	1108	1140	0.0838	0.1314	0.5155	0.083	0.1516	0.1061	0.27	0.3164	0.1418	0.127		0.2946		0.7054	0.1302	0.1356	0.6468	0.51	0.418	0.778	67.9	37.7	35.9	48.9	11.4	24.55	13.25	156	240	0.26	33.7	67.72	0.642	0.838	0.0642	0.0488	0.762	0.76	0.068	0.844	0.786	2011..2022	2011-11-01..2023-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station (from end Feb 1995) with earlier flows using levels and rating for Central Park Wigan. Flow regime affected by reservoirs.	Original station, Central Park, Wigan was a velocity-area station opened 1973 in rectangular channel with pipe as low-flow control. Variable bed profile (silt, debris and redistribution) gave poor data. In 1995 an ultrasonic gauge was installed with four transducers (cross-path at two heights) under a footbridge approx. 100m downstream. Dual running from 1995 until December 1999 when consolidated at ultrasonic site and station renamed as Wigan. More transducers at higher levels added May/June 2012. Station photos provided show the ultrasonic station. Ultrasonic flows are only produced up to a stage of 1.53m, beyond this modelled flow data is used due to obstruction caused by footbridge soffit.	No bypassing reported. Check gaugings suggest the ultrasonic station may under-estimate the higher flows. Wigan Flood Alleviation Scheme (approx 750m upstream of the gauging station) was finally completed around November 2011. The scheme has two large hydrobrake devices which restrict outlet flows through the hydrobrakes to around 20 cumecs. Peak flow ratings and derivation of flows reflect the changes at the station.	Flow events are generally affected by the two hydrobrakes in the Wigan Flood Alleviation Scheme. However, the December 2015 event filled the reservoir and flowed over the embankment spillway. Peak flow data from water year 2011/12 are rejected as unrepresentative due to the effect of the flood alleviation scheme on flows. Gaps in data June 2020 and April 2023 due to equipment faults.	Moderate relief catchment. Geology is Coal Measures wholly blanketed by Boulder Clay. Land use mostly rural with some urban development. No significant catchment changes.	Flow regime and effective catchment significantly modified by the Integrated complex of eight reservoirs at Rivington which diverts flow from the Yarrow headwaters to the River Douglas.
70004	Yarrow at Croston Mill	74.4	SD4988417943	349884.0	417943.0	53°39'20.0398"N 2°45'35.1544"W	53.65557	-2.75977	Yarrow	Croston Mill	6.9	EA-CL	700408	70	1976-01-01		MIS	129.7		18.7	true	true	true	true	false	false	false	true	false	false	false	false	false	SPGEI	1976-01-01	2023-09-30	1.929	0.24	1976-08-22	1976-08-22	53.54	2015-12-26	2015-12-26	0.492	0.736	1.081	4.277	6.212	0.47	17440	17440	100.0	1973-10-03		28.809	8.3	29.8	78.5	168.3	380.8	1043	1050	0.0818	0.1276	0.5636	0.0347	0.188	0.0838	0.2562	0.3891	0.0748	0.1911	0.1664	0.3606		0.473	0.0325	0.0288	0.9007	0.51	0.464	0.939	50.5	38.37	35.0	47.3	10.7	30.22	13.55	93	293	0.34	9.6	81.42	0.982	0.721	0.104	0.0751	0.781	0.973	0.097	0.84	1.012	2016..2022	2017-08-01..2023-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with old diagonal mill weir control and fish pass. Some influence of Rivington reservoirs on the flow regime.	Velocity area station since 1973. Control is an old diagonal mill weir, with crest 10 m wide and 3 m long.	Insensitive at low flows but gives reasonable data for medium to high flows. Weir susceptible to mud build-up and erosion and capped in July 2010. Hydraulic modelling shows that bridge downstream drowns the structure at medium to high flows, causing bypassing upstream of weir at very high flows. Photographs at 0.955m show hydraulic performance (approx 0.26m below stage at which modelling suggests weir becomes drowned). No cableway, and high flow gaugings difficult with ADCP. Three ratings applied across period of record, the most recent is due to fish pass installation. Rating 05top and 6 are the same above 1.421m, so there are two peak flow ratings (03top and 05top). Eel pass installed in 2016.	Revised daily flow data from start of record (1/1976) to 12/2007 loaded on 11/08/2009 due to new medium-high flow rating: biggest effect is on the highest flows, e.g. previous max GDF on 22/08/1987 reduced from 69.1 to 36.5 cumecs. Minor effect below 8 cumecs, annual runoffs reduced slightly, typically by 1%. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9). Peak flow data from water year 2016/17 are rejected as unrepresentative due to the effect of the flood alleviation scheme on flows.	Geology is principally Coal Measures with subordinate Millstone Grit and Triassic sandstones. Wholly blanketed with Boulder Clay and glacial sands and gravels. Land use mostly rural with some urban area including Chorley. No significant catchment changes.	The Rivington reservoir system captures the original Yarrow headwaters and diverts flow to River Douglas. Compensation flows to the Yarrow of 7.1 Ml/d. Also some limited spill from Upper Rivington Reservoir to the Yarrow during high flows, and reservoir discharges may affect flows at other times (e.g. January 2023). Catchment area of 74.4 km2 excludes portion now draining to Rivington reservoirs.
70005	Lostock at Littlewood Bridge	56.0	SD4969119658	349691.0	419658.0	53°40'15.4609"N 2°45'46.6685"W	53.67096	-2.76296	Lostock	Littlewood Bridge	8.9	EA-CL	700509	70	1974-01-01	2009-01-01	TP	29.6		13.0	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1976-01-01	2008-12-31	1.276	0.171	1984-08-26	1984-08-26	24.0	2000-10-30	2000-10-30	0.33	0.513	0.752	2.71	4.05	0.46	12054	11949	99.129	1974-11-28	2005-10-01	23.008	7.0	18.9	57.9	140.0	219.7	1012	1022	0.0745	0.1097	0.5385		0.2727	0.0731	0.0708	0.5142	0.0269	0.3128	0.1184	0.3881		0.4935	0.0612	0.0061	0.9326	0.51	0.474	0.964	37.3	38.22	34.5	45.4	10.4	27.01	12.76	71	274	0.4	7.0	54.19	1.114	0.704	0.1368	0.1087	0.769	0.751	0.1473	0.844	0.795			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with shallow V control.	Velocity area station opened 1974. A 3m wide shallow V sheet-piled control was constructed in February 1987. Since 01/01/2009 this has been a level-only station.	Bridge downstream also acts as partial control. Bypassing has been reported. Site is subject to tidal influence and weed growth, which led to the station downgrade. A permanent cableway was installed to improve gauging at higher flows, but has now been removed. Separate ratings for peak flows applied before and after sheet-piled control in 1987. Current rating gauged to QMED. Two peak flow ratings across period of record.	Low and medium flows are not generated. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Low relief catchment on Boulder Clay which blankets Mercia Mustone, Sherwood Sandstone with Millstone Grit in the extreme east. Isolated hill peat. Land use of mixed farming and substantial urban/suburban development, including the town of Leyland, with many motorways traversing the catchment. No significant catchment changes.	Low flows are heavily influenced by a sewage treatment works at Leyland.
71001	Ribble at Samlesbury	1145.0	SD5892230412	358922.0	430412.0	53°46'06.3200"N 2°37'28.8570"W	53.76842	-2.62468	Ribble	Samlesbury	9.5	EA-CL	713019	71	1960-01-01		MIS			8.0	true	true	true	true	false	true	true	true	false	false	true	true	true	SE	1960-05-01	2023-09-30	34.518	1.88	1984-07-22	1984-07-22	765.0	1980-10-27	1980-10-27	4.75	9.77	17.1	83.8	125.0	0.34	23163	23163	100.0	1960-04-06		599.752	6.5	89.0	197.2	390.9	691.4	1321	1350	0.0934	0.0304	0.7087	0.0864	0.0682	0.08	0.0182	0.6428	0.1878	0.0657	0.0063	0.8195	0.0136	0.1606	0.0265	0.0704	0.6148	0.56	0.371	0.974	94.7	42.13	43.9	59.6	10.9	102.03	52.65	220	220	0.08	9.1	1144.7	1.682	0.897	0.0777	0.0248	0.742	0.88	0.0376	0.824	0.874	1959..1972	1960-05-04..1973-05-23	gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; the most downstream on the Ribble, just upstream of the tidal limit.	Velocity area station built in 1960. Cableway. An additional station was built 1km upstream in October 1970 to measure low/medium flows; a compound Flat V weir with flanking crests. This additional station closed 1981 due to vandalism; subsequently re-opened July 1991 and closed again February 2010.	Natural gravel shoal control affected by silt and summer weed, just u/s of the tidal limit. No bypassing. Good high flow rating from permanent cableway. Inlet blockage has been a continual problem, affecting many peaks. Multiple peak flow ratings applied across period of record. Works downstream between 1993-95, required different low flow ratings applied before, during, and after these works.	All data presented are for the velocity area station, with some infilling from the additional station. December 2010 measurements affected by ice. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8). Flows prior to 1973 datum change thought to be overestimated and are rejected.	A large catchment of mixed geology with Carboniferous Limestone, Millstone Grit and Coal Measures overlain with Boulder Clay. Predominantly rural, apart from urban areas of Burnley and Nelson. No significant catchment changes.	Some small reservoirs in the catchment, but without significant impact on flow regime.
71002	Hodder at Stocks Reservoir	37.4	SD7193754572	371937.0	454572.0	53°59'11.1439"N 2°25'46.0465"W	53.98643	-2.42946	Hodder	Stocks Reservoir	181.9	EA-CL	711007	71	1968-01-01		B				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1963-10-01	2023-09-30	0.632	0.0	1976-01-01	2023-09-30	65.17	1976-09-01	1976-09-01	0.0	0.0	0.0	1.556	3.78	0.14	21915	20201	92.179				176.4	203.9	298.1	435.5	545.5	1572	1658	0.1839	0.0065	0.609	0.1569	0.0075	0.2645	0.0022	0.2707	0.4283	0.0011		1.0				0.069	0.5581	0.6	0.286	0.85	114.2	50.45	52.0	69.6	11.7	11.57	6.54	306	159	0.23	184.5	37.51	0.416	0.842	0.0292	0.0			0.0					gdf;ndf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	An overflow weir downstream of the Stocks Reservoir.	Overflow weir 91.4 m broad just downstream of Stocks Reservoir.		Monthly naturalised flow series: 1933-1953 derived from Fylde Water Board data, similarly rainfall 1933-1953 an average of 6 gauges.	Geology predominantly Millstone Grit in the headwaters, otherwise Carboniferous Limestone, almost entirely overlain by Boulder Clay.	Flow regime highly regulated.
71003	Croasdale Beck at Croasdale Flume	10.4	SD706546	370600.0	454600.0	53°59'11.7811"N 2°26'59.4564"W	53.98661	-2.44985	Croasdale Beck	Croasdale Flume	177.0	EA-CL	711008	71	1957-01-01	1974-12-31	FL				true	true	true	true	false	false	false	false	false	false	false	false	false		1957-10-01	1974-09-30	0.395	0.037	1959-10-05	1959-10-11	14.07	1968-03-23	1968-03-23	0.065	0.136	0.198	0.878	1.39	0.35	6209	6209	100.0	1957-05-04	2014-10-01	10.9	171.9	224.7	343.3	454.5	541.8	1786	1882	0.0224	0.0011	0.413	0.5472	0.0103	0.0371	0.0009	0.3439	0.6149	0.0031		1.0				0.2532	0.2888	0.6	0.276	1.0	156.7	54.51	55.3	75.3	12.0	6.79	3.66	343	148	0.35	171.9	10.71	0.236	0.574	0.0163	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard trapezoidal flume installed in 1957 for paired catchment study.	Non-standard compound trapezoidal flume with stainless steel low flow throat in trapezoidal masonry section, 8.8m wide at flume full, 12.5m at bank full. Station opened in June 1957 and installed for paired catchment study with the wooded Bottoms Beck catchment nearby (station 71005). Crosdale considered the more reliable of the two. Station closed November 1977 to December 1982 and July 1989 to September 2003, with some gaps in the 1970s. Closed for peak flows end September 2014 due to gravel accumulation.	All flows in bank, and thought not to drown. To counter problems with sediment and blocking of the inlet pipes, the station was installed with throat tappings and two inlet pipes and stilling wells, with the traces plotted on the same graph to aid identification of any problems. Additionally, a water flushing system was installed in January 1967, though regular cleaning ceased around 1976-77. Early charts showed flows directly, from theoretical rating. Croasdale Beck now has a transducer (PTX) rather than the original two throat tappings and inlet pipes. One rating applied to recent record based on gaugings (1980s and 2000s) to top of concrete flume with hydraulic model (limited survey) to extend the rating. Issues across the flow range arise from gravel accumulations creating maintenance issues affecting the stilling well inlet pipes therefore producing poor quality stage and flow data across the whole stage range. An external river level sensor was installed in March 2018, which has improved the stage measurement but the channel has not been dredged since 2014 so there are significant gravel accumulations upstream of the weir and around the staff gauge.	Daily flow data presented to 1974 and annual maxima to 2014, though peak flows should be regarded as provisional - early charts need review, and there are no high flow gaugings. Dates of flood events to 1977 are probably water days. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Steep channel in a wet, high relief catchment. Geology is half Carboniferous Limestone and half Millstone Grit, blanketed by Boulder Clay. Mostly used for grazing. No catchment changes known.	Natural catchment adjacent to Stocks reservoir.
71004	Calder at Whalley Weir	316.0	SD7292636054	372926.0	436054.0	53°49'12.1806"N 2°24'45.8298"W	53.82005	-2.41273	Calder	Whalley Weir	39.9	EA-CL	712615	71	1963-10-01		FV		9.6	7.0	true	true	true	true	false	false	true	true	false	false	false	false	true	EI	1963-10-01	2023-09-30	8.887	1.04	1969-09-07	1969-09-07	248.0	2015-12-26	2015-12-26	1.946	3.16	4.72	20.6	29.5	0.41	21915	20970	95.688	1961-11-01		172.971	40.9	113.1	209.8	348.2	556.4	1213	1232	0.0902	0.028	0.6319	0.0717	0.1637	0.0691	0.0199	0.5845	0.1518	0.1676		0.4208		0.5792	0.025	0.0475	0.6692	0.55	0.395	0.945	94.3	38.32	40.6	55.1	10.8	40.73	22.96	221	290	0.15	40.9	317.44	0.704	0.807	0.0513	0.0729	0.771	0.843	0.1025	0.853	0.843	1961..1968	1961-10-01..1969-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir in channel prone to severe weed growth.	Originally a velocity area station based on timber weir, built in 1961. Replaced by Flat V weir 30m downstream in October 1970. Weir 24.4 m wide with 1:20 cross slopes.	Weir drowns at high flows. Station prone to severe weed growth problems and vandalism. Flows above about 4m extend out of bank, behind cableway. Current meter gaugings for high flows are undertaken from upstream cableway. Two peak flow ratings applied across period of record; pre- and post-weir ratings have good fit to gaugings. Rating derived from current meter gauging with modelled top-end.	Gauged daily flows: no data 10/1971 to 12/1973 and 9-12/1975. 5/1970 values estimated by CEH using 71001. Peak flows: data presented for the Flat V station only, from 1970. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Geology mainly Coal Measures and Millstone Grit overlain by Boulder Clay. Catchment includes Accrington, Burnley and Nelson (approx 20% urban overall); extensive moorland above the towns. No significant catchment changes.	Minor direct abstractions. Many industrial discharges, effluent pollution.
71005	Bottoms Beck at Bottoms Beck flume	10.6	SD745565	374500.0	456500.0	54°00'14.0041"N 2°23'25.9231"W	54.00389	-2.39053	Bottoms Beck	Bottoms Beck flume	186.2	NWW		71	1960-01-01	1974-12-31	FL				true	false	false	false	false	false	false	false	false	false	false	false	false		1960-10-01	1974-09-30	0.347	0.017	1970-06-21	1970-06-21	8.849	1974-09-07	1974-09-07	0.031	0.068	0.125	0.895	1.39	0.21	5113	5113	100.0				189.3	233.9	294.1	341.3	404.5	1459	1510	0.4038	0.001	0.4273	0.1416	0.0166	0.587	0.0029	0.1638	0.2447	0.0017		1.0					0.7456	0.6	0.281	0.999	90.9	48.52	47.3	62.8	11.4	7.77	3.51	289	195	0.23	189.3	10.74	0.702	0.782	0.0454	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound trapezoidal flume with two integrating recorders operating upstream and at throat tappings.	Compound trapezoidal flume with stainless steel low flow throat in trapezoidal masonry section, 8.5m wide at flume full, 12.2m at bank full.	Two integrating recorders operate from u/s and throat tappings. Inlet pipes block with sediment. Theoretical rating based on model tests and checked by dilution gauging.		Steep channel in a wet, high relief catchment. Geology: half Carboniferous L'st and half Millstone Grit, blanketed by Boulder Clay. 70% of the catchment afforested between 1950 and 1970, with limited felling. Natural catchment on inflow stream to Stocks reservoir.
71006	Ribble at Henthorn	456.0	SD72193917	372190.0	439170.0	53°50'52.8600"N 2°25'27.0945"W	53.84802	-2.42419	Ribble	Henthorn	38.8	EA-CL	710305	71	1968-01-01		CB		3.1	10.0	true	true	true	true	false	false	false	true	true	true	false	false	true	N	1968-12-01	2023-09-30	13.836	0.423	1995-08-11	1995-08-11	282.3	1980-10-27	1980-10-27	1.136	3.39	6.36	35.23	52.22	0.31	20027	20026	99.995	1968-08-30		220.554	41.0	113.6	203.1	423.4	691.4	1342	1343	0.0638	0.0288	0.8005	0.0606	0.0326	0.0537	0.017	0.705	0.1963	0.0275		0.9652	0.0348		0.0395	0.0781	0.6186	0.61	0.367	0.997	87.5	43.43	43.2	59.1	10.8	74.55	35.15	238	198	0.1	42.4	446.17	2.348	0.937	0.0906	0.0076	0.665	0.585	0.015	0.751	0.625			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir, insensitive at low flows. Gauges a predominantly limestone catchment which drains the Yorkshire Dales.	Compound broad-crested weir, low notch 3.8m wide, flanking crests each 10.3m wide and 0.3m higher. Superseded, in August 1968, the original velocity area station which had been opened in 1960 and a bed control added May 1965 to improve calibration.	Weir drowns at high flows, and insensitive at low flow due to its breadth. Algal build-up and leaks affect low flows. No bypassing reported. Cableway until 1988 and from 1997. Single peak flow rating applied to period of record from 1968 derived from current meter gaugings. Hydraulic model used to extend beyond gauged range.	Peak flows are presented only from the broad-crested weir, from 1968. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Geology mainly Carboniferous Limestone overlain by Boulder Clay in valleys with intermittent Millstone Grit. The northern half of the catchment lies in the Yorkshire Dales National Park. Predominantly rural catchment with mixed farming and several small towns; moorland in the upper catchment. No significant catchment changes.	Largely natural runoff pattern. Minor abstractions and effluent discharges.
71008	Hodder at Hodder Place	261.0	SD7053739897	370537.0	439897.0	53°51'16.0530"N 2°26'57.7953"W	53.85446	-2.44939	Hodder	Hodder Place	42.0	EA-CL	711610	71	1969-01-01		FV	544.0		10.3	true	true	true	true	false	false	false	true	false	false	false	false	false	SRP	1976-01-01	2023-09-30	9.055	0.513	1976-08-27	1976-08-27	250.0	1980-10-27	1980-10-27	1.11	2.378	4.126	22.6	33.6	0.32	17440	17427	99.925	1969-10-17		222.341	44.0	112.7	223.9	412.5	545.5	1533	1602	0.1014	0.0226	0.6672	0.1857	0.0118	0.1226	0.0112	0.5565	0.2964	0.0077		1.0			0.0	0.1187	0.4163	0.6	0.33	0.97	122.3	46.13	50.9	69.0	11.4	42.54	24.68	245	168	0.15	45.0	258.15	0.845	0.864	0.055	0.0008			0.0021					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir with Flat V central section and a fish pass. Station opened to replace Higher Hodder Bridge.	Compound truncated Crump profile weir opened 1969. Flat V centre section (24.4m wide, 1:20 cross slopes) with level flanking crests each 7.2m wide and 0.6m higher than centre of V. Low divide walls. Station replaced Higher Hodder Bridge 3km upstream.	Weir drowns at high flows. No bypassing reported. Rated by gauging from bridge 200m upstream in support of modified theoretical calibration. One rating applied across period of record.	Maintenance work undertaken on the weir between May 2011 and August 2011 mean the data in this period should be treated with caution. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Geology predominantly Millstone Grit and Carboniferous Limestone. Land use is mixed farming in the lower reaches and peat moorland in headwaters. Very rural, lightly populated catchment including the Forest of Bowland. No significant catchment changes.	Near natural catchment with some minor abstractions and discharges. Stocks Reservoir controls 15% of the catchment.
71009	Ribble at New Jumbles Rock	1053.0	SD7024937592	370249.0	437592.0	53°50'01.4145"N 2°27'12.7497"W	53.83373	-2.45354	Ribble	New Jumbles Rock	31.3	EA-CL	713056	71	1970-01-01		VA	900.0		10.0	true	true	true	true	false	false	false	true	false	true	false	false	true	SRP	1979-05-01	2023-09-30	33.059	2.44	1984-07-26	1984-07-26	650.0	1980-10-27	1980-10-27	4.37	9.12	15.9	82.4	117.0	0.34	16224	16224	100.0	1970-01-01		547.161	32.6	107.3	208.0	398.3	691.4	1344	1369	0.0834	0.0277	0.7141	0.0934	0.0685	0.0764	0.0171	0.633	0.2031	0.0664		0.8096	0.0148	0.1756	0.0244	0.077	0.5923	0.57	0.367	0.974	97.4	42.38	44.2	60.2	11.0	78.75	32.66	231	224	0.08	32.6	1047.01	1.499	0.93	0.0715	0.026	0.751	0.74	0.0389	0.829	0.744	1978..1979	1979-09-17..1980-01-07	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with bedrock control located just downstream of confluence with River Calder.	Old Jumbles Rock believed to have been opened 1964, but no data until 01/01/1970. A velocity area station with a bedrock control. Station re-sited to New Jumbles Rock 50m downstream in 1979 using same control, and cableway installed. Station located just downstream of confluence with the River Calder.	Weed growth in the summer. Extreme flows are out of bank. One rating, derived from current meter gaugings, applied across period of record.	Affected by ice and snow 19-27/12/2010. Daily flows are suspect and peak flows rejected from 17/09/1979 to 07/01/1980. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Geology consists of Carboniferous Limestone and Millstone Grit with Some Coal Measures in the Southeast overlain with Boulder Clay. A predominantly rural catchment with mixed farming in lower reaches and peat moorland in headwaters. No significant catchment changes.
71010	Pendle Water at Barden Lane	108.0	SD8367235144	383672.0	435144.0	53°48'44.3596"N 2°14'58.0368"W	53.81232	-2.24945	Pendle Water	Barden Lane	92.3	EA-CL	712113	71	1971-01-01		FV	186.4		12.0	true	true	true	true	false	false	false	true	false	false	false	false	false	SEI	1971-11-01	2023-09-30	2.798	0.325	1995-08-22	1995-08-22	73.3	2015-12-26	2015-12-26	0.478	0.836	1.33	6.7	9.94	0.37	18962	18959	99.984	1971-10-07		81.763	92.0	150.3	244.4	364.7	556.4	1238	1249	0.077	0.0177	0.6605	0.1028	0.127	0.0492	0.0166	0.6032	0.1881	0.1335		0.74		0.26		0.0798	0.6477	0.58	0.388	0.948	98.9	39.31	42.4	56.8	10.8	21.42	12.42	252	260	0.12	94.5	110.61	0.488	0.791	0.0395	0.0583	0.753	0.539	0.0831	0.84	0.566			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir affected by subsidence in early record but stable since 1980. Gauges a largely rural catchment with flows affected by numerous small reservoirs.	Flat V weir 17m wide, constructed in 1971. Structure movement on the right bank due to mining subsidence affected low flows to around 1980, but not considered to have affected high flows significantly. A cableway was installed in 1996.	Weir drowns above 0.5m but no bypassing reported. Rating has been adapted for mining subsidence and appears to have been stable since 1980. The early high flow gaugings were carried out from a road bridge upstream using a hand line; after detailed review, these were excluded from the rating development due to the low sinker weight and turbulence in flow under the bridge. Calibration by current meter at the site itself and by level correlation with earlier site at Quakers-in-Pendle (71801; 1968-1973). Ratings derived from current meter gauging with hydraulic model results for extreme flows. Three daily flow ratings applied, to cover differences in low flows. Ratings are identical for medium to high flows.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Geology consists of Carboniferous series - mostly Millstone Grit, with limestone in the north, and Coal Measures to the south-east. Peat moorland tops. A largely rural catchment including Nelson and Colne. No significant catchment changes.	Flows affected by many polluting discharges and numerous small reservoirs.
71011	Ribble at Arnford	204.0	SD8386155586	383861.0	455586.0	53°59'45.7974"N 2°14'51.6115"W	53.99605	-2.24767	Ribble	Arnford	116.8	EA-CL	710103	71	1972-01-01		FV	210.0		13.8	true	true	true	true	false	false	false	true	false	true	true	false	true	N	1966-05-01	2023-09-30	7.506	0.169	1995-08-11	1995-08-11	138.0	2015-12-05	2015-12-05	0.482	1.57	3.09	20.11	29.9	0.25	20972	20551	97.993	1969-10-01		121.978	117.7	158.4	316.8	477.7	691.4	1490	1446	0.0418	0.0086	0.7945	0.1123	0.0188	0.036	0.0033	0.5877	0.3617	0.011		0.9236	0.0764		0.0246	0.1716	0.4623	0.61	0.382	0.998	102.5	46.04	45.0	61.9	11.1	42.88	21.87	319	205	0.1	117.8	203.18	3.794	0.73	0.0987	0.0027			0.0071	0.671	0.671	1969		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir; the highest station on the Ribble. Natural regime.	Station opened at Halton West 1km downstream in 1969. Replaced by a Flat V weir at Arnford built October 1972.	Weir drowns at high flows. No bypassing. Cableway until late 1990s. Hydrographs truncated and the growth curve for this station is unusually low. This is thought to be due to storage just upstream from Arnford at Long Preston Ings. Ratings derived from gaugings. Three peak flow ratings applied over period of record. Separate ratings applied for Halton West (pre-1972) and Arnford (post-1972) stations.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Long narrow catchment of Carboniferous Limestone with some Millstone Grit overlain by Boulder Clay on the valley floor. A predominantly moorland catchment rising to the summit of Pen-y-Ghent, draining part of Yorkshire Dales National Park and Langstrothdale Chase. Includes Settle. No significant catchment changes.	An almost entirely natural flow regime with minor abstractions and discharges.
71013	Darwen at Ewood	39.5	SD67732621	367730.0	426210.0	53°43'52.6007"N 2°29'26.2329"W	53.73128	-2.49062	Darwen	Ewood	98.3	EA-CL	713120	71	1973-01-01		VA			13.0	true	true	true	true	false	false	false	true	false	false	false	false	false	PEI	1976-01-01	2023-09-30	1.214	0.051	1985-02-04	1985-02-04	26.2	2012-06-22	2012-06-22	0.296	0.475	0.69	2.67	3.89	0.43	17440	16946	97.167	1973-10-05		28.778	101.3	146.0	223.9	328.7	400.6	1332	1340	0.0784	0.0372	0.5445	0.0997	0.2171	0.0675	0.0293	0.4565	0.1633	0.2703		0.2928		0.7072	0.1493	0.068	0.4305	0.51	0.424	0.938	95.2	36.71	43.8	60.3	11.9	11.54	6.47	231	317	0.25	102.5	39.05	0.43	0.718	0.0355	0.0935	0.683	0.745	0.1388	0.823	0.714			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging catchment with steep headwaters and urbanised in lower reaches.	Open channel velocity area station opened in 1973. A vertical concrete wall forms the left bank with a high natural bank on the right.	Fixed stone bed downstream provides some control. Bed rough, stony but stable, approach channel silty. No bypassing. No cableway. Multiple ratings applied across period of record derived from current meter gauging, with modelled top-end.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Steep headwater catchment, particularly in the west, that drains north to the outskirts of Blackburn. Solid geology of Millstone Grit and Coal Measures, with intermittent Boulder Clay, hill peat and glacial gravel in main valley. Heavily urbanised at Darwen. No significant catchment changes.	Small reservoirs in southwest. Station affected by non-continuous abstractions and releases upstream. Compensation flows are activated automatically.
71014	Darwen at Blue Bridge	128.0	SD5645327786	356453.0	427786.0	53°44'40.6327"N 2°39'42.3585"W	53.74462	-2.66177	Darwen	Blue Bridge	8.1	EA-CL	713122	71	1974-01-01		VA			7.8	true	true	true	true	false	false	false	true	false	false	false	false	false	PEI	1976-01-01	2020-07-28	3.942	0.711	2016-09-17	2016-09-17	102.0	2012-06-22	2012-06-22	1.12	1.62	2.28	8.41	12.3	0.45	16281	16128	99.06	1974-10-01		90.532	11.1	62.1	151.9	283.2	401.7	1154	1199	0.1096	0.0444	0.5436	0.058	0.2307	0.0963	0.0223	0.5218	0.0905	0.2628	0.0698	0.6207		0.3095	0.1527	0.0499	0.6344	0.51	0.408	0.946	76.9	38.85	40.3	53.8	11.1	32.1	18.89	163	311	0.24	12.0	136.21	0.752	0.853	0.0645	0.0996	0.747	1.145	0.1375	0.861	1.125			gdf;ndf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; some bypassing on both banks during extreme events.	A rated velocity area station, opened 1974. Ultrasonics (4 cross-paths) from July 1997 until January 2014.	Main control is an old mill weir 370m downstream, which was modified in 1974 into a V profile. During extreme events the station is bypassed on the left and right banks - modelling confirms that this is not a large percentage of the total flow. Uneven bed profile can affect accuracy of low flows. Rating derived from gaugings, supported by ultrasonics, with a modelled top-end. Historically high flow gaugings were carried out from a footbridge just downstream of the site but are now undertaken using an ADCP just upstream of the station. One rating applied to period of record. A fish pass was installed at the downstream weir on 27th July 2020 leading to a significant drop in water levels at the gauging station.	Ultrasonics (1997-2015) often cut out at the higher flows. Daily mean flows not held after installation of fish pass on control weir (29/07/2020), pending review of low flow rating. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Glacial clays and gravels blanket Coal Measures and Millstone Grit with Sherwood Sandstone near the gauge. Upper catchment almost wholly urbanised (Blackburn, Darwen); agricultural in lower half. No significant catchment changes.	Low flows heavily influenced by effluent discharges.
71015	Dunsop at Footholme Flume	25.0	SD6529352891	365293.0	452891.0	53°58'15.2985"N 2°31'50.1013"W	53.97092	-2.53058	Dunsop	Footholme Flume	155.0	EA-CL	711086	71	1995-10-17		MIS		14.0	7.0	true	false	false	false	false	false	false	true	false	false	false	false	false		1995-10-23	2023-09-30	1.019	0.072	1999-09-10	1999-09-10	24.9	2015-12-05	2015-12-05	0.124	0.213	0.371	2.7	4.13	0.25	10205	10165	99.608				163.8	250.7	378.2	463.3	528.2	1866	1913	0.0362	0.0003	0.4712	0.4703	0.0071	0.0394	0.0009	0.2412	0.7178	0.0008		1.0				0.3844		0.6	0.297	0.999	178.9	53.72	59.1	81.3	12.5	9.06	4.46	364	204	0.22	163.8	25.03	0.704	0.768	0.0195	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flume station opened in 1996. There is earlier data available at station downstream.	Flume. Replaced thin plate weir at same site. Low runoff, cause under investigation.			Very steep, highly responsive catchment draining rural peat moorland.
72002	Wyre at St Michaels	275.0	SD4632941132	346329.0	441132.0	53°51'49.0141"N 2°49'03.3173"W	53.86362	-2.81759	Wyre	St Michaels	4.4	EA-CL	720517	72	1963-10-01		FV	160.0	15.8	12.0	true	true	false	true	false	false	false	true	false	false	true	false	false	SPG	1963-10-01	2023-09-30	6.869	0.045	1968-02-27	1968-02-27	151.0	2000-10-30	2000-10-30	0.632	1.7	3.09	17.5	26.39	0.31	21915	21915	100.0	1962-09-12		131.364	6.0	16.9	113.3	359.7	560.5	1258	1251	0.0736	0.106	0.617	0.1574	0.0391	0.0584	0.0459	0.6505	0.1999	0.0402	0.2816	0.715		0.0034	0.017	0.1123	0.7137	0.56	0.368	0.958	71.4	44.32	41.5	53.9	10.7	37.86	17.85	146	249	0.36	6.6	273.75	1.448	0.55	0.1367	0.0057	0.633	0.694	0.0122	0.739	0.652	1991..2022	1991-10-01..2023-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir on tidally affected reach of the River Wyre. Flood flows truncated by upstream storage basins.	Station opened as a velocity area station with cableway in September 1962. Despite inclusion of artificial bed control, low flow calibration found insensitive and additional station built in 1969. The additional station is a truncated Flat V weir (19.4m wide, with 1:2 u/s & d/s slopes, and 1:20 cross-slopes) built 500m downstream in December 1969. Both stations operated until February 1981.	Gaugings were carried out at the velocity area station until February 1981 and a cableway was installed at the Flat V station in mid 1990s. Tidally affected, particularly at spring tides, drowning weir. Raised banks prevent bypassing except for major events. Flood levee work in the 1980s is believed to have increased the channel capacity. Multiple ratings applied across POR, the most recent is valid from Sept-2011 with introduction of Flat V weir, derived from gaugings.	Peak flow data are from the velocity area station to end 1969, and Flat V thereafter. The largest event in the record was on 26/27 October 1980, which flooded around 5000 acres, with breaches in the embankments upstream of the gauging stations. Because of problems in the recording of the October 1980 event, the flow is an estimate but one which reflects the limited capacity of the river channel and the extensive floodplains upstream. Damage in this event probably affected peak flows immediately afterwards. When the flood storage basins upstream are operated, the data should not be used in pooling groups and therefore AMAX and POT data are rejected after water year 1990/91. Flows after 2011 rating change are uncertain pending further gaugings and should be used with caution. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Geology consists of Lower Triassic Bunter sandstones, marl, Millstone Grit and Carboniferous Limestone. A lightly populated catchment having predominantly agricultural land-use. No significant catchment changes.	There are abstractions at Garstang but the main artificial influence on low and medium flows is the Lune-Wyre transfer (via Abbeystead Reservoir). Large flood flows are reduced by Garstang (online) and Catterall (offline) flood storage basins upstream. Garstang was first used on 5 January 1992 and Catterall on 31 January 1995.
72003	Hindburn at Wray	84.0	SD6049167950	360491.0	467950.0	54°06'21.2659"N 2°36'20.6981"W	54.10591	-2.60575	Hindburn	Wray	127.7	EA-CL	724427	72	1967-05-25		CB				true	true	false	true	false	false	false	true	false	false	false	false	false		1976-02-01	2023-09-30	2.998	0.13	2018-06-29	2018-06-29	115.0	2015-12-05	2015-12-05	0.249	0.655	1.247	7.61	11.1	0.26	17409	13702	78.706	1967-05-25		129.75	40.0	125.9	257.0	422.3	549.7	1626	1552	0.0683	0.0087	0.7513	0.1641	0.0025	0.0721	0.0022	0.4877	0.4364	0.0016		1.0			0.0004	0.1088	0.5486	0.6	0.305	1.0	112.2	49.84	50.2	67.8	11.6	16.55	9.44	266	336	0.36	40.0	82.69	0.456	0.771	0.0318	0.0002			0.0008			1966..1990	1967-05-25..1990-12-31	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir in near natural catchment. Station closed in 1980 and re-opened 1991.	Station opened in May 1967 as compound broad-crested weir; central crest 3.65m wide, two flanking crests each 7.4m wide and 0.38m higher. Station closed December 1980 (due to gravel problems) and re-opened January 1991 following inlet pipe improvements.	No bypassing. High flow gaugings from nearby bridge or portable cableway. Two peak flow ratings applied across period of record. Flood Studies Report grade B.	Peak flow data are presented for the period of the improved station from 1991. A large flood occurred on 8/8/1967, which demolished 12 houses in the village of Wray. Maximum water level at gauging station levelled in at 4.91m above weir crest - thought to have resulted from backing-up from Meal Bank Bridge downstream before it collapsed, so stage doesn't represent the peak flow. Hydraulic Research Station (HRS) estimated peak as 637m3/s, though current estimate at Hornby downstream is less than this. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Stream is steep and flashy. An almost entirely rural catchment with predominantly agricultural and moorland land use with little development. Designated Area of Outstanding Natural Beauty. No significant catchment changes.	Near natural catchment.
72004	Lune at Caton	983.0	SD5293565318	352935.0	465318.0	54°04'53.8198"N 2°43'15.2118"W	54.08162	-2.72089	Lune	Caton	10.7	EA-CL	724629	72	1959-01-01		CB	329.0	41.6	4.8	true	true	true	true	false	true	false	true	false	true	true	true	true	SRP	1959-01-01	2023-09-30	36.906	1.16	1984-08-25	1984-08-25	1440.0	2015-12-05	2015-12-05	3.28	10.1	17.96	89.8	132.0	0.32	23649	22917	96.905	1968-04-24		729.715	12.0	88.3	264.4	476.9	734.4	1523	1521	0.0548	0.0178	0.809	0.0839	0.0127	0.0493	0.0063	0.6022	0.3317	0.009		0.6666	0.2983	0.0351	0.0121	0.0849	0.5568	0.64	0.404	0.997	137.2	43.71	50.5	68.3	11.5	74.98	39.57	275	283	0.1	12.0	985.37	1.259	0.779	0.0689	0.0016			0.0043			1967		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound-broad crested weir. Early record contains data from two sites (measuring high and low flows). Some influences on low flows due to transfers and abstractions.	Compound broad-crested weir. Station opened in 1968 to measure low flows, with Halton 3 km downstream measuring high flows. On closure of Halton in 1985, Caton became a full-range station and the records were combined.	The cableway downstream at Halton was used to gauge higher flows until severely damaged in the January 1995 event. One peak flow rating across period of record based on gaugings, extrapolated using a hydraulic model to allow for floodplain flow. The highest gauging on record (at Halton) is a rough estimate (based on gauging across half the river before the gauging hut had to be evacuated).	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Headwaters rise from Shap Fell and the Pennines. Mixed geology with Carboniferous Limestone; Silurian shales; Millstone Grit and Coal Measures. Substantial Drift cover. Agriculture in valleys; grassland with peat moss in highest areas. No significant catchment changes.	Transfers to River Wyre under Lancashire Conjunctive Use Scheme (LCUS). Major abstractions for public water supply.
72005	Lune at Killington	219.0	SD6220590633	362205.0	490633.0	54°18'35.5882"N 2°34'56.6344"W	54.30989	-2.5824	Lune	Killington	82.8	EA-CL	722421	72	1969-01-01		CB		97.0	8.0	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1969-09-01	2023-09-30	10.398	0.34	1989-07-25	1989-07-25	458.0	2015-12-05	2015-12-05	0.931	2.76	4.71	25.9	38.5	0.32	19753	19571	99.079	1969-05-09		271.444	83.0	198.1	294.3	469.4	675.6	1633	1670	0.0441	0.0112	0.8305	0.0816	0.009	0.0286	0.0031	0.6481	0.3095	0.0105		0.2981	0.7019		0.0106	0.0929	0.4606	0.71	0.438	0.995	174.5	40.85	55.1	78.2	12.0	35.76	21.58	317	115	0.03	83.0	219.24	0.704	0.974	0.0484	0.0008			0.0019					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard compound broad-crested weir draining a wet, natural catchment with headwaters in the eastern Lake District and north west Yorkshire Dales.	A non-standard compound broad-crest weir with off-centre low flow notch, installed May 1969.	Station is fully contained, no bypassing. There is some flow leakage from the left bank wing wall, which may impact upon very low flows. Station affected by stilling well leakage until 2/88. Cableway was located 30m upstream, re-built in 2003 nearer to the weir. New cableway gaugings show a good correlation with the old cableway gaugings. Flood gaugings are affected by strong turbulence and wave action. One peak flow rating applied across period of record. Originally a theoretical rating, with check gaugings, now extrapolated by hydraulic modelling.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A wet, natural and entirely rural catchment, draining the eastern Lake District fells and northwestern parts of the Yorkshire Dales National Park. Silurian slates to the W, Carboniferous conglomerate and Limestone N and E. Peat moss on high moors to NW, heather moss in N. Lower valleys are Boulder Clay covered. Moorland, grass, arable farming. No significant catchment changes.	Natural catchment.
72006	Lune at Kirkby Lonsdale	507.1	SD61497776	361490.0	477760.0	54°11'38.9223"N 2°35'30.2209"W	54.19415	-2.59173	Lune	Kirkby Lonsdale	36.1	EA-CL	724024	72	1968-01-01	1978-01-30	VA	315.0			false	true	false	true	false	false	false	false	false	false	false	false	false																				1968-10-16	1984-03-13	441.994	38.1	132.1	301.8	504.5	734.4	1623	1652	0.0553	0.0116	0.8352	0.0715	0.0096	0.0488	0.0031	0.5789	0.3603	0.0079		0.453	0.547		0.0161	0.0838	0.4645	0.71	0.425	0.997	169.5	43.02	54.5	75.0	11.9	54.54	32.83	315	273	0.07	38.9	510.09	0.864	0.85	0.0515	0.001			0.0029					cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station draining predominantly rural catchment with headwaters in the Yorkshire Dales. Station closed in 1984.	Velocity area station opened in October 1968 and closed in 1984.	No bypassing. One rating applied across period of record derived from current meter gaugings. Flood Studies Report grade A.		A predominantly rural catchment with headwaters that rise from Shap Fell and the western part of the Yorkshire Dales National Park. Mixed geology with Carboniferous Limestones, Silurian shales and substantial Drift cover. No significant catchment changes.
72007	Brock at upstream of A6	32.0	SD5123240548	351232.0	440548.0	53°51'31.8650"N 2°44'34.6161"W	53.85885	-2.74295	Brock	upstream of A6	24.0	EA-CL	720215	72	1970-01-01		B	31.1		16.0	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1978-07-27	2023-09-30	0.845	0.023	1995-08-22	1995-08-23	26.9	1980-10-27	1980-10-27	0.078	0.229	0.429	1.94	2.91	0.35	16502	16486	99.903	1978-07-27		28.972	21.3	87.3	171.3	379.8	520.9	1371	1361	0.1192	0.0526	0.7403	0.0768	0.0071	0.1129	0.0204	0.7343	0.1245	0.0075	0.0251	0.9749				0.0455	0.6711	0.6	0.319	1.0	109.0	49.42	43.1	57.8	11.0	15.48	9.6	196	219	0.38	21.3	31.51	0.6	0.808	0.0529	0.0			0.0			1977		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad-crested weir draining rural, natural catchment.	Rectangular section broad-crested weir with a central low flow notch, constructed in 1978. Weir reconstructed to original height in 1991 due to erosion problems.	No bypassing reported. A downstream stilling pool with a further broad-crested weir with twin low flow notches next to the banks does not affect the control. Coarse gravel shoals above weir on right bank. One rating applied across period of record derived from current meter gaugings. High flows rated by ADCP from upstream cableway.	Daily mean flows suspect from 19/06/2018 until 27/07/2018 because of drift and debris. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Moderate relief, entirely rural, catchment. Steep headwaters drain Millstone Grit in the north and Carboniferous Limestone in the south. Sherwood Sandstone close to the gauge. Peat on high moors, lower catchment overlain by Boulder Clay. No significant catchment changes.
72008	Wyre at Garstang	114.0	SD488447	348800.0	444700.0	53°53'45.3508"N 2°46'50.2180"W	53.89593	-2.78062	Wyre	Garstang	10.9	EA-CL	720107	72	1967-01-01		FV	117.0	3.0	16.0	true	false	false	false	false	false	false	true	false	false	false	false	false	PG	1967-04-01	2023-09-30	3.312	0.031	1976-08-27	1976-08-27	111.0	2015-12-05	2015-12-05	0.391	0.954	1.65	7.63	11.7	0.34	20637	20363	98.672				12.7	47.5	185.4	414.8	560.5	1420	1393	0.0763	0.0197	0.5816	0.288	0.024	0.071	0.0098	0.5203	0.3669	0.0221	0.0551	0.9449				0.1847	0.6079	0.6	0.332	0.909	98.0	48.34	46.2	59.2	11.1	30.38	17.29	211	243	0.35	13.8	113.31	0.849	0.638	0.0649	0.0044			0.0083	0.846	0.165			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Upgraded in Sep 1969 to a Flat V weir.	Initially vertical-area station with gravel control. From Sep 1969 Flat V weir installed.	Rated by gaugings. Silting of the well can cause low flows to be overestimated.		Agricultural catchment with moorland-fed headwaters. Geology almost entirely Millstone Grit with Sherwood Sandstone close to the gauge. Peat on high moors, Boulder Clay covers lower catchment.	Flows affected by Garstang intake immediately u/s, Lune transfers via Abbeystead, Garstang flood basin overspill during high flows and possibly by bankside gravel workings u/s.
72009	Wenning at Wennington	142.0	SD6154270082	361542.0	470082.0	54°07'30.5304"N 2°35'23.8143"W	54.12515	-2.58995	Wenning	Wennington	39.4	EA-CL	724326	72	1970-01-01		FV		33.7	16.0	true	true	false	true	false	false	false	true	false	false	false	false	false	G	1976-01-07	2023-09-30	4.303	0.109	2018-07-27	2018-07-27	131.0	2015-12-05	2015-12-05	0.281	0.865	1.767	11.15	16.99	0.28	17434	17434	100.0	1970-11-27		99.634	42.9	115.1	202.5	387.9	720.2	1323	1313	0.046	0.0188	0.7743	0.1029	0.0156	0.0386	0.0123	0.6505	0.2878	0.0104		0.9231	0.0429	0.034		0.1283	0.6782	0.6	0.37	0.995	91.3	44.93	42.8	58.0	10.8	29.31	18.0	231	358	0.05	42.9	139.36	0.771	0.904	0.0735	0.0018			0.0061	0.603	0.567	1970		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging a rural catchment.	Truncated Flat V weir, approximately 14m wide, 1:20 cross-slopes, opened in 1969 with chart data from 27/11/1970.	River well contained, not bypassed. Algal growth and upstream siltation need regular attention. No permanent cableway. Gaugings carried out from a bridge upstream, and more recently (2010s) from a road bridge approximately one mile downstream. Two peak flow ratings applied across period of record derived.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Coal Measures and Millstone Grit faulted against Carboniferous Limestone, small area of impervious Silurian slate in extreme east. Boulder Clay over most of catchment with some alluvium and hill peat. Land-use rural with heather moor in the south. No significant catchment changes.	Predominantly natural flow regime with negligible impact from discharges.
72011	Rawthey at Brigflatts	200.0	SD6394591114	363945.0	491114.0	54°18'51.6039"N 2°33'20.5738"W	54.31433	-2.55571	Rawthey	Brigflatts	84.1	EA-CL	723423	72	1968-01-01		VA			10.0	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1968-07-01	2023-09-30	9.745	0.141	1984-07-24	1984-07-24	406.5	2015-12-05	2015-12-05	0.693	2.08	3.962	24.34	38.59	0.25	20180	18096	89.673	1968-06-21		306.66	85.7	178.0	369.8	557.0	734.4	1702	1751	0.0523	0.0024	0.8479	0.0766	0.006	0.0581	0.0018	0.4547	0.481	0.0043		0.7404	0.2596		0.0102	0.1152	0.3746	0.71	0.348	0.999	180.5	48.36	57.5	78.1	12.1	28.21	14.56	366	291	0.14	85.7	194.09	0.594	0.759	0.037	0.0009			0.0025			1967..1980		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station draining catchment with natural flow regime. Low flows can be affected by stilling well siltation.	Velocity area station in natural channel, approx 30m wide, opened 1967.	Limestone outcrop 10m downstream forms the bed control. No bypassing - all flows contained until at least 6m. Stilling well experiences siltation problems, giving flat-bottomed recessions. A cableway 50m upstream was removed during September 1975. One peak flow rating, with modelled top end, applied across period of record. Flood Studies Report grade B.	Early daily flow record contains some gaps. WY1980/1981 rejected due to substanital under-estimation of the true AMAX. Flows between September 2009 and April 2011 elevated by tree root trapped in natural bed control and should be treated with caution. Low data was suspended due to access to the station and channel being red carded, therefore no gaugings were undertaken to confirm rated flows. Rating curve has now been reactivated and flow data is being produced. First QA in 2018 identified stilling pipe blockage due to siltation that needed to be cleared. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	High relief moorland catchment draining Carboniferous Limestone and Millstone Grit. Peat on highest moors, Boulder Clay on lower slopes and in valleys. No significant changes.	Steep, upland catchment results in very responsive flows. Predominantly natural flow regime.
72014	Conder at Galgate	28.5	SD4816055371	348160.0	455371.0	53°59'30.3576"N 2°47'31.8113"W	53.99177	-2.79217	Conder	Galgate	16.6	EA-CL	724836	72	1966-01-01		FV		25.1	25.0	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1976-02-01	2023-09-30	0.704	0.02	1995-08-30	1995-08-30	23.8	2015-12-05	2015-12-05	0.065	0.184	0.346	1.73	2.51	0.35	17409	16821	96.622	1966-02-17		16.971	19.1	44.9	105.1	274.8	465.8	1257	1183	0.0775	0.0463	0.7449	0.0849	0.0389	0.0857	0.0142	0.7353	0.1275	0.03		1.0				0.0737	0.7575	0.6	0.443	0.975	93.4	35.96	40.2	51.3	10.6	14.2	7.39	131	270	0.32	19.1	28.99	0.917	0.748	0.0822	0.002			0.0064	0.649	0.247	1965..1989		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir in confined concrete channel. Weir can be subject to weed growth in the summer.	Velocity area station opened 1966. Considerably truncated Flat V weir from September 1975, in confined concrete channel to 1.7m, with concrete wall above as a flood barrier.	All flows contained in rectangular channel. No cableway. One peak flow ratings applied to whole period of record. Currently gauged using ADCP. On rating plot, all gaugings are after weir construction, except for the batch above the rating.	Lower confidence in pre-1970 data as exact date of flood wall construction prior to that date is unknown and back-dating of the peak flow rating prior to June 1970 therefore tentative. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Catchment to the East of Lancaster draining steep moors of Littledale. Solid geology Millstone Grit, mostly covered with Boulder Clay with hill peat at highest altitudes. A predominantly rural catchment draining moorland. No significant catchment changes.	Predominantly natural flow regime. Some minor groundwater abstractions affect the flows.
72015	Lune at Lunes Bridge	141.5	NY6121002901	361210.0	502901.0	54°25'12.2107"N 2°35'57.4580"W	54.42006	-2.59929	Lune	Lunes Bridge	165.0	EA-CL	722242	72	1979-01-01		MIS	186.0		9.0	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1979-12-29	2023-09-30	6.732	0.23	1989-07-25	1989-07-25	300.6	2015-12-05	2015-12-05	0.546	1.551	3.136	16.79	25.7	0.3	15982	15982	100.0	1979-02-02		198.55	162.9	220.2	293.4	453.8	675.1	1597	1630	0.0262	0.0133	0.8337	0.0968	0.0053	0.0238	0.0025	0.6498	0.3134	0.0101		0.4641	0.5359			0.0994	0.5475	0.71	0.44	0.993	145.9	39.48	55.4	80.0	12.1	20.14	10.49	318	46	0.07	164.7	140.83	0.7	0.822	0.0549	0.0011			0.0022			1978		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard, compound bed control built into the invert of a railway bridge. Predominantly natural flow regime.	Non-standard, compound bed control built into the invert of a railway bridge. Overall width 11.65m, with 4.2m wide central notch. Weir eroded. Station opened in 1978; repaired in 1989, June to September 2009, and February to May 2011. Station replaced Tebay (72010).	Flows are fully contained in concrete channel under the bridge therefore rating applicable to full range. Erosion could affect low flows. High-flow gauging by cableway 10m upstream. Flows above a stage of 3.5m cannot be gauged accurately due to high velocities lifting the bomb up towards the surface. Separate daily flow ratings applied before and after works in Sept 2009. Three peak flow ratings derived from current meter gaugings, with top limb from hydraulic modelling.	No mean flow data summer 2009 and between February and May 2011 due to weir repairs. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A predominantly rural catchment with high relief on the eastern edge of the Lake District. High relief, moorland catchment on Carboniferous Limestone and Silurian Shales. About a fifth of the catchment covered by Boulder Clay. No significant catchment changes.	Predominantly natural flow regime.
72016	Wyre at Scorton Weir	88.8	SD5012049989	350120.0	449989.0	53°56'36.9306"N 2°45'41.0248"W	53.94359	-2.7614	Wyre	Scorton Weir	31.6	EA-CL	720102	72	1967-01-01	2016-10-04	MIS	155.0			true	true	false	true	false	false	false	false	false	false	false	false	false	P	1967-02-01	2015-12-06	3.427	0.0	1967-02-02	1976-08-26	450.0	1975-12-01	1975-12-01	0.185	0.886	1.543	7.549	12.06	0.3	17841	16105	90.27	1967-01-12	2016-10-04	79.331	30.8	97.9	213.4	440.0	560.5	1505	1473	0.0576	0.0157	0.5665	0.345	0.0083	0.0558	0.0052	0.4908	0.4411	0.003		1.0				0.225	0.5838	0.6	0.316	0.942	102.4	50.03	48.6	62.3	11.3	22.52	12.7	243	238	0.32	30.8	87.99	0.624	0.708	0.0461	0.0002			0.0004			1966..1997	1966-10-01..1995-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard weir with small fish pass. Artificial influence from Lune-Wyre transfer via Abbeystead reservoir.	Station opened in January 1967 with a non-standard compound broad-crested weir and fish pass.	Siltation of stilling well affects low flow measurement; this was a serious problem in 2009 and Jan 2010. Large floods spill out of bank into gravel pits, bypassing station. The November 1980 floods breached many embankments on the River Wyre, including upstream of Scorton, so that the level at the station in this event may have been less than if the embankments had held. After the January 1995 floods, around 1996, the right bank was raised, and QMED is now roughly within bank. During high flows gravel and boulders are washed over the weir causing erosion to the crest. This erosion and repairs have led to multiple ratings being applied throughout the station record, all similar at high flows, so a single one is adopted. One peak flow rating applied across period of record, derived from current meter gaugings, with a modelled top-end to allow for floodplain flow. Current meter gaugings taken at high flows by handline from a nearby footbridge.	No data from May 1997-May 1998 due to problems at site. Peak flows are shown but marked as Rejected before the current raised embankments in 1996. No daily flow data after storm Desmond on 05/12/2015.	A predominantly rural and agricultural catchment with moorland fed headwaters. Geology is almost entirely Millstone Grit. A major geological fault is situated just downstream of the weir. No significant catchment changes.	Abbeystead reservoir in centre of catchment controls approx 50%. Adjacent gravel workings and Lune-Wyre transfer via the reservoir (see 72002) can affect flow regime.
72017	Wenning at Hornby	232.0	SD5855468364	358554.0	468364.0	54°06'34.1099"N 2°38'07.5448"W	54.10947	-2.63543	Wenning	Hornby	22.7	EA-CL	724528	72	1940-01-01		MIS	385.0			false	true	false	true	false	false	false	false	false	false	false	false	false																				1957-09-01		214.526	23.8	103.8	220.4	398.0	720.2	1426	1391	0.0581	0.0186	0.7641	0.1206	0.011	0.0543	0.0091	0.5989	0.3301	0.0074		0.9535	0.0259	0.0205	0.008	0.1165	0.6338	0.6	0.35	0.997	98.0	46.52	45.4	61.4	11.1	33.73	18.23	238	339	0.17	23.6	230.69	0.742	0.923	0.0628	0.0013			0.0044					cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Curved crest weir constructed in 1957. Predominantly natural flow regime. Previously station number 72807.	Station from 1957 on rebuilt weir, curved crest 0.19m long, radius 26.6m, channel 38m wide, with V notch 2.86m wide in centre and 0.5m below main crest. Previously (Jan 1940 to May 1945) a broad-crested weir (40.2m wide), but no data presented for the earlier station. The gauging stations at Wennington and Wray account for 96% of the catchment area.	Weir drowns at high flows. Defences raised in flood alleviation scheme constructed 1996 to 1997; before this, high flows cut across bend on right bank. High flow gaugings carried out by means of portable cableway 100m upstream of recorder. Two ratings applied across period of record. Peak flow ratings derived from current meter gauging with modelled top-end. New rating after embankments raised in 1997. Peak flow ratings at Hornby, Wennington and Wray have been reworked and give reasonable matches. Flood Studies Report grade B for entire record 1940-1945 and 1957-date.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9). No data since June 2020 due to outstation failure.	A predominantly rural catchment including western parts of the Yorkshire Dales National Park. Mixed geology consisting of Coal Measures, Millstone Grit and Carboniferous Limestone. Small area of impervious Silurian slate in the east. Most of the catchment is covered with Boulder Clay, some alluvium and hill peat; heather moor in the south. No significant catchment changes.	Predominantly natural flow regime. Negligible impact on the flow from abstractions and discharges.
72817	New Mill Brook at Hollowforth Hall	31.9	SD5034636402	350346.0	436402.0	53°49'17.4241"N 2°45'20.6886"W	53.82151	-2.75575	New Mill Brook	Hollowforth Hall	16.0	EA-CL	720212	72	1972-01-01		FVVA				true	true	false	true	false	false	false	true	false	false	false	false	false		1972-04-01	2023-09-30	0.703	0.01	2006-07-25	2023-06-16	37.6	1975-01-22	1975-01-22	0.037	0.112	0.24	1.82	2.99	0.24	18810	14672	78.001	1984-09-04		23.268	14.5	35.2	69.7	126.3	263.5	1091	1110	0.0581	0.1781	0.701		0.059	0.0353	0.0589	0.8365	0.0001	0.0665	0.2512	0.7488			0.1283		0.8351	0.52	0.387	0.992	35.8	40.51	37.6	49.8	10.3	16.64	8.56	77	240	0.44	15.3	33.19	0.804	0.925	0.0932	0.0086	0.53	0.562	0.0212	0.683	0.626	1983..2011		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with small truncated Flat V weir gauging a relatively flat, rural catchment.	Velocity area station with small truncated Flat V weir approx 4.3m wide, low wingwalls in straight channel. Located approximately 150m downstream of a road bridge in open pasture.	The weir was primarily constructed as a low flow gauge and drowns out at a relatively low level. Large flows spill onto the right bank floodplain. Rating developed from gaugings, with modelled top-end to allow for bypassing / out of bank flow.	Early daily flows held for Apr 1972-Jan 1975. Daily and peak flows held from Sept 1984. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Relatively flat, mainly agricultural rural area, with sandstones in lower part and mudstones in upper catchment.	Predominantly natural flow regime. Minor impact from groundwater abstractions.
73002	Crake at Low Nibthwaite	73.0	SD29458821	329450.0	488210.0	54°17'04.6757"N 3°05'06.6530"W	54.28463	-3.08518	Crake	Low Nibthwaite	38.6	EA-CL	737537	73	1963-01-01		FVVA	37.0		17.1	true	true	true	true	false	false	false	true	false	true	false	false	true	SP	1963-10-01	2023-09-30	4.272	0.07	1972-10-07	1972-10-08	43.1	2009-11-19	2009-11-19	0.596	1.88	3.08	9.17	11.5	0.57	21915	21914	99.995	1962-08-21		21.194	39.7	49.4	173.1	448.7	802.1	2152	2152	0.1396	0.0322	0.7169	0.0308	0.009	0.2704	0.0157	0.5032	0.1256	0.0155			1.0				0.0645	0.71	0.363	0.73	197.6	50.41	61.6	85.2	12.2	18.93	9.27	212	146	0.21	39.7	72.33	0.648	0.836	0.0518	0.001			0.0008			1961..1970	1962-08-27..1968-10-02	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in stone walled channel with non-standard shallow V structure. Peak flows are attenuated by Coniston Water.	Station opened in 1962 with unstable rubble weir, replaced with Flat V control in August 1963. Stone walled channel approx 10m wide. Straight approach for approx 50m, slight right hand curve downstream. Bed is of slate and stones.	Extreme flows are out of bank and the channel surges badly in high flow. Cableway removed 2002/2003. Station was re-instrumented and metricated in 1970 with associated change in datum. Multiple ratings across period of record. Flood Studies Report grade A1. Lowest flows unreliable. Bankfull 1.1m on left bank, 1.2m on right bank.	Flows before Oct-1968 are rejected should be treated with caution. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Geology predominantly impervious Silurian Slates with thin Carboniferous Coal Measures with a band of Boulder Clay over centre. Catchment with mountains in the north supporting rough pasture and moorland, remainder grassland. Rural apart from Coniston village. No significant catchment changes.	Headwater abstractions are used for public water supply. Peak flows are attenuated by Coniston Water.
73003	Kent at Burneside	73.6	SD50739554	350730.0	495540.0	54°21'10.8038"N 2°45'34.4248"W	54.353	-2.75956	Kent	Burneside	51.0	EA-CL	730102	73	1974-01-01	2000-06-30	VA	91.0		12.5	true	true	false	true	false	false	false	false	false	false	false	false	false	I	1981-01-01	1999-03-07	3.735	0.07	1995-09-21	1995-09-21	77.9	1995-01-31	1995-01-31	0.274	0.959	1.951	8.998	12.7	0.38	6640	6094	91.777	1974-08-15	2000-06-28	65.834	50.5	107.5	233.4	465.1	815.5	1884	1895	0.0548	0.0653	0.8205	0.0417	0.008	0.0555	0.005	0.6497	0.2713	0.0131		0.0024	0.9976		0.0012	0.0608	0.2022	0.71	0.466	0.942	173.2	42.58	58.9	81.7	12.1	22.3	11.23	265	168	0.22	50.5	74.52	0.864	0.805	0.0633	0.0025			0.0037			1980..1991		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, closed in 2000 and replaced by Bowston (73017).	Velocity-area station in natural channel on an industrial site within a paper factory. Station opened 1974 and closed June 2000, replaced by Bowston (73017). Site became problematic due to river bank problems, access difficulties and the absence of a low flow control.	Full range of flows contained. No permanent cableway, gauging by wading up to 0.8m, high flows by temporary cableway. Station reconstructed in 1991, which included a 30 inch concrete well, situated on the left bank, and boulders, to act as a control. Station closed from 25/1/91 to 15/4/1991 for reconstruction. Change in control affected low flow rating, but impact on high flow rating thought to be insignificant. High flow gaugings at Bowston (new replacement station) used to develop a single peak flow rating applied throughout. There are 10 ratings for low-medium flows.	Station opened 15/08/1974, but no data before 1/10/1981. Statistical analysis does not support merging of the flow records of 73003 and 73017.	Impervious Lower Palaeozoic slate; flagstone and shale covered in middle reaches of valleys by Boulder Clay which supports permanent grassland, remainder for grazing. Rises in the mountainous Lake District; steep descent to Kendal.	Near natural catchment with minor discharges.
73005	Kent at Sedgwick	209.0	SD5087787421	350877.0	487421.0	54°16'48.1971"N 2°45'21.4625"W	54.28005	-2.75596	Kent	Sedgwick	18.9	EA-CL	730511	73	1968-01-01		CBVA		85.0		true	true	true	true	false	false	true	true	true	true	true	false	true	IN	1968-11-01	2023-09-30	9.505	0.429	1984-08-25	1984-08-25	391.0	2015-12-05	2015-12-05	1.18	3.11	5.32	22.2	30.6	0.41	20057	19934	99.387	1968-10-14		165.082	18.0	74.8	205.8	436.8	815.5	1758	1726	0.0599	0.0561	0.8056	0.0381	0.0339	0.0542	0.0064	0.6968	0.1969	0.0431		0.1501	0.8499		0.0416	0.0403	0.3476	0.71	0.514	0.976	153.4	38.11	54.1	74.7	11.5	33.63	19.24	234	178	0.16	18.0	212.24	1.091	0.832	0.0739	0.0116	0.652	0.431	0.0179	0.77	0.417			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir gauging a catchment with flashy regime in the southern Lake District.	Station opened October 1968, data held from November 1978. Compound broad-crested weir, 27m wide with 9.16m low flow notch 0.3m lower (widened from 3m in October 1994). Eel pass installed October 2014.	Weir very prone to algal growth which can significantly affect lower levels and needs regular cleaning in summer. Very fast river with a steep gradient; weir may drown around 1.3m. No bypassing. Permanent cableway, which was moved from a poorer section in 1989 - so gaugings before then may be less accurate. Flows were not contained in notch prior to widening; rating was good before and after. Flood Studies Report grade A1. Two peak flow ratings applied across period of record, the most recent is valid from October 1994; rating below 2.2m derived from check gaugings and hydraulic modelling used beyond. Data presented after the installation of a non-standard sleeper V control on 07/11/1978 to stabilise the bed correcting earlier issues with low flow measurement.		High relief catchment drains impervious Pre-Cambrian to Silurian rocks where heather moorland and peat predominate. Carboniferous Limestone provides good grazing, especially south of Kendal on Drift cover. Heather moorland and peat predominate, and most land is grazed.	Flashy, with widely fluctuating flows. Discharges from paper mill and Kendal sewage treatment works.
73006	Cunsey Beck at Eel House Bridge	18.7	SD3695694055	336956.0	494055.0	54°20'17.2937"N 2°58'16.1094"W	54.33814	-2.97114	Cunsey Beck	Eel House Bridge	63.4	EA-CL	735226	73	1968-01-01		VA	8.0			true	false	false	false	false	false	false	true	false	false	false	false	false	N	1976-01-01	2023-09-30	0.958	0.0	1976-04-28	1978-09-07	14.93	1982-01-03	1982-01-03	0.053	0.284	0.543	2.32	3.114	0.42	17440	16151	92.609				61.1	68.7	141.4	221.9	312.3	1929	1897	0.3539	0.0689	0.4998	0.0259	0.0037	0.471	0.0021	0.4365	0.0246	0.0154			1.0				0.101	0.71	0.448	0.727	119.2	42.83	57.9	77.6	11.9	9.43	5.08	144	104	0.22	61.1	18.77	0.644	0.891	0.0522	0.0017			0.0022					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a catchment that predominantly drains through Esthwaite Water.	Velocity area station opened in May 1968 in an artificially straightened reach. A non-standard wooden sleeper V control was installed Nov 1978. Historically this has been a relatively poor site with weed in the channel, erosion of the left bank, and deposition downstream. The station was closed in April 1983, but reopened in March 1985 when long term investigation of water quality in Esthwaite Water was started. The control was modified and raised approximately 0.1m in August 1999. Removed from peak flows dataset in May 2016 (WINFAP Files v4).	The highest flows spill onto the left bank. Heavy rainfall brings down appreciable bedloads. The wooden weir was installed in Nov 1978 to stabilise the bed and increase low flow sensitivity. In November 1998 a tree and part of the right bank collapsed into the channel; debris collected and scour took place with resultant gravel deposited upstream of control raising the bed in some places as high as the control. Ongoing channel changes since. No cableway. Bridge gauging was used for high flow gaugings by current meter. ADCP now used.	Revised daily flow data from 9/01/2005 to 31/12/2007 loaded on 11/08/2009 due to new rating: generally slight increases, annual runoff increased by 3%. Missing data for 14 days starting 19/11/2009 due to flood damage and from 2010 to 2012 due to a significant removal of gravel in June 2010. Flows suspended from 21/06/2020 pending new rating. Zero flows between 1976 and 1978 recorded stage below the rating limit.	A steep, wet catchment draining Silurian shales, mudstones and sandstones. Minor superficial deposits. Westerly tributary to Windermere. Land-use mostly rural with woodland on valley slopes. No catchment changes known.	River does not show a flashy response; majority of catchment drains through Esthwaite Water, giving attenuated response.
73008	Bela at Beetham	131.0	SD4962080577	349620.0	480577.0	54°13'06.3440"N 2°46'26.8058"W	54.21843	-2.77411	Bela	Beetham	10.9	EA-CL	731013	73	1969-01-01		FV		22.2	13.8	true	true	true	true	false	false	false	true	false	false	false	false	false	SG	1969-08-01	2023-09-30	3.728	0.294	1989-08-07	1989-08-07	90.4	2015-12-05	2015-12-05	0.54	1.21	2.24	8.62	11.6	0.49	19784	19321	97.66	1969-07-07		37.4	10.9	34.2	135.4	235.4	333.1	1305	1294	0.0547	0.0624	0.8231	0.0039	0.0441	0.0527	0.0244	0.8236	0.0609	0.0304		0.4207	0.5793		0.0101		0.7733	0.68	0.529	0.952	88.0	33.01	43.7	56.7	10.5	29.33	14.19	136	243	0.21	10.9	127.43	0.861	0.768	0.0931	0.0029			0.0097	0.557	0.59			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir, velocity area for medium/high flows. Minor impact from Killington Reservoir.	Opened July 1969. Flat V weir 18.9m across, 1:20 cross slope. Velocity area for medium/high flows.	Believed to become non-modular, but not to fully drown. No bypassing. Algal and weed issues, the weir does require regular cleaning in summer but does not significantly affect flow data providing the cleaning work is maintained. No permanent cableway, but high flows well gauged to beyond QMED. The high flow gaugings were done from temporary cableway installed in 1970 and again in 1999 and 2000. One peak flow rating applied across period of record which fits well to gaugings.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Predominantly Silurian slate with Carboniferous Limestone in lower reaches. Boulder Clay covers a large proportion of the catchment, giving rise to arable farming and permanent grassland. The remainder is rough grazing. No significant catchment changes.	Minor impact from Killington Reservoir. Low flows may be affected by discharges from paper mill.
73009	Sprint at Sprint Mill	34.6	SD5147796106	351477.0	496106.0	54°21'29.3728"N 2°44'53.3860"W	54.35816	-2.74816	Sprint	Sprint Mill	57.5	EA-CL	730203	73	1969-01-01		FV		8.6	24.5	true	true	true	true	false	false	false	true	false	true	false	false	true	N	1976-01-01	2023-09-30	2.031	0.06	2010-06-27	2010-06-27	69.0	2015-12-05	2015-12-05	0.171	0.559	1.05	4.91	7.2	0.32	17440	17403	99.788	1969-10-24		43.655	58.4	148.5	316.8	580.9	775.8	2069	2013	0.0647	0.023	0.7981	0.103	0.001	0.0495	0.0031	0.6227	0.3211	0.0035		0.0186	0.9814			0.0796	0.2788	0.71	0.452	0.997	224.5	44.14	61.3	86.6	12.2	18.39	10.17	334	158	0.18	60.1	34.7	1.064	0.737	0.0609	0.0002			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging a very wet, high relief catchment. Predominantly natural flow regime.	Station opened Oct 1969. Flat V weir 14m wide, cross-slopes 1:20, wingwalls to 0.61m, with sloping ground above. Weir was repaired in 1990 and 2000. Weir significantly repaired summer 2018 but no obvious effect on the flow data. Eel pass added at the same time, attached to the outer edge of the weir. May have a minor effect on V full flows. Flood warning station for Kendal.	Cableway used for medium to high flows. Modular limit not known, but above 1m (see photos). Two ratings applied across period of record thought to be a result of small datum shift in January/February 1995. Good fit to gaugings, highest gauging taken during Storm Desmond (05/12/2015) which confirmed rating.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	High relief, very wet catchment drains an area of peat moss growing on Borrowdale Volcanics in extreme north, through grazing lands on Silurian and Ordovician slate, flags and shales to Boulder Clay covered lower reaches. No catchment changes known.	Predominantly natural flow regime. In the past, low flows were slightly influenced by mill sluice operations.
73010	Leven at Newby Bridge	247.0	SD3659986267	336599.0	486267.0	54°16'05.1985"N 2°58'29.9127"W	54.26811	-2.97498	Leven	Newby Bridge	37.3	EA-CL	735430	73	1939-01-01		CC		140.0		true	true	true	true	false	true	false	true	true	false	true	false	false	SPE	1939-01-01	2023-09-30	14.299	0.108	1972-10-07	1972-10-07	191.0	2009-11-20	2009-11-20	1.326	5.488	10.1	32.24	40.86	0.49	30954	30954	100.0	1939-01-02		72.329	31.3	49.8	176.6	504.7	893.2	2210	2172	0.1957	0.0442	0.6275	0.0475	0.014	0.2753	0.0073	0.4516	0.1731	0.0219			1.0			0.0266	0.1527	0.71	0.44	0.694	218.9	46.57	67.0	92.3	12.7	36.23	21.47	229	172	0.13	31.3	247.97	0.797	0.972	0.0524	0.0045			0.0059	0.719	0.746	1938	1938-10-01..1939-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir gauging the outflow of Lake Windermere. The lake supports public water supply abstraction and attenuates peak flows.	Level record since 1939 from four different sites at Newby Bridge. All flow records from 1939 to 1974 combined into a single sequence. Since 04/05/1971 Compound Crump profile weir. The original "Recorder" station to 1969 was a recorder in a box with stilling well located where the upstream face of the bridge met the right bank. Chart trace appears ok. However, there was no staff gauge at the site to check the chart levels in the early years, and some concerns about the representativeness of recorded levels during high flows, and/or datum changes. The PGS (Primary Gauging Station; 1963-1981) was a velocity area station with a hut and cableway, on the right bank approx 140m upstream of the bridge. The period of overlap of the Recorder and PGS stations enabled a stage-discharge relationship to be derived for the Recorder station. In 1971 the weir immediately downstream of the bridge was reconstructed, flood relief gates added, and the present FMS (Flow Measuring Station) built downstream. A temporary recorder was installed approx 600m downstream of the FMS during construction of the FMS and upstream weir. The FMS station has a low central notch 3.7m wide, and two flanking crests 10m and 16.9 m wide, 0.65 m higher. Weir was repaired summer 2013 and crests restored to original profile; does not appear to have affected the single rating equation.	Full-range station. The bridge is a control at medium to high flows, though some modelling suggests that the comparatively narrow part of the lake upstream of the bridge can act as a control on lake levels. The November 2009 event exceeded the top of the divide walls, but the weir was not drowned (see photos). There are 2 ADCP gaugings from December 2015 at 2.145m and 2.134m, extrapolated beyond. Observations of weir during highest event on record give confidence to extrapolation of rating. There is an effect of the upstream flood relief gates on recorded flows, they can suddenly increase significantly when opened and suddenly decrease significantly when closed. There are fish sluice gates on the upstream weir which are opened at very low flows to maintain a certain flow downstream. Therefore recorded flows at extreme levels have a large artificial influence. Multiple peak flow ratings across period of record.	The records from the various stations since 1939 have been merged to form one record, though the Recorder record has more uncertainties than the later stations. Peak stage data for the Recorder period have been adjusted; the adjustment sets the offset of the rating equation to zero, which should generally be around 0.274m. (So an original stated level of 1.274m at a chart datum of 38.71mAOD with (h-0.274m) in the rating equation has been reset to a level of 1.0m, with (h+0) in the rating equation). The temporary station was used to calculate flows by correlation with the PGS and used to infill the flow record from Sept 1970 to June 1971. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Catchment drains southern parts of the Lake District massif. Predominantly impervious, Borrowdale Volcanics in north and Silurian Slate in south. Boulder Clay along river valleys. Mainly grassland, very wooded in lower reaches. Catchment contains Windermere, Esthwaite Water, Rydal Water and Grasmere, and numerous other small, natural water bodies. No catchment changes known.	Abstractions from Lake Windermere for public water supply. Peak flows attenuated by Lake Windermere.
73011	Mint at Mint Bridge	65.8	SD5241194470	352411.0	494470.0	54°20'36.7643"N 2°44'00.7080"W	54.34355	-2.73353	Mint	Mint Bridge	50.3	EA-CL	730404	73	1970-01-01		FV	64.0		15.9	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1970-08-01	2023-09-30	2.62	0.065	1984-08-26	1984-08-27	101.1	2015-12-05	2015-12-05	0.21	0.731	1.382	6.274	8.902	0.36	19419	18537	95.458	1970-07-28		57.76	51.2	133.5	210.9	388.1	551.9	1674	1599	0.0645	0.022	0.8816	0.0213	0.0081	0.0496	0.005	0.7846	0.1504	0.0091		0.1207	0.8793			0.0192	0.5318	0.71	0.512	0.993	138.0	36.87	50.5	69.3	11.1	20.56	10.65	231	214	0.16	51.2	65.44	0.744	0.836	0.0615	0.0005			0.0009					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging steep, very wet natural catchment.	Station opened in 1969. Flat V weir, 10.9m across, cross-slope 1:10, originally with stainless steel crest which disappeared in 1987. Replaced 1990 but negligible effect, weir repaired summer 2002, 2007 and 2013. Weir situated 300m upstream of the bridge.	Low flow weir - likely to drown at high flows. Flows contained except during Storm Desmond (05/12/2015). Site can be waded to 0.7m. Two ratings applied across period of record with a change on 01/01/1990 attributed to gravel accretion upstream.	Significant gaps in daily mean flow record: 1978, 1980 and 1988. Peak flows: Although calendar years 1980 and 1988 are largely missing, comparison of dates and magnitudes at Sprint Mill suggests that water year AMAX series presented are reasonable. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	A steep, very wet natural catchment. Geology predominantly impervious Silurian Slate with bands of Flags and Shale, small patches of Carboniferous Limestone and Basal Conglomerate. Patchy boulder clay cover in the middle and lower reaches. Sheep grazing with peat moorland in the extreme north. No known catchment changes.	Natural catchment. Low flows slightly affected by Meal Bank mill sluice operation from 21/7/67 to 3/1/69 and periodic releases from sludge disposal works.
73012	Kent at Victoria Bridge	183.0	SD517931	351700.0	493100.0	54°19'52.2023"N 2°44'39.2759"W	54.33117	-2.74424	Kent	Victoria Bridge		EA-CL	730507	73	1974-01-29		VA				false	true	true	true	false	false	false	false	false	false	false	false	false																				1974-01-29		144.086	44.1	106.8	226.6	458.2	815.5	1824	1787	0.0588	0.0465	0.8321	0.0436	0.0122	0.051	0.0055	0.698	0.2244	0.0184		0.0717	0.9283		0.0154	0.0467	0.3489	0.71	0.496	0.972	165.5	39.87	55.7	77.2	11.7	25.83	13.64	257	177	0.17	44.7	183.22	1.031	0.761	0.0712	0.0038			0.0052	0.653	0.219	1973..1977	1974-10-01..1978-10-01	cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened in 1974 to replace Nether Bridge. Flows pre-1978 affected by Kendal flood alleviation scheme.	Velocity area station in a stone wall lined open channel. Opened January 1974, replacing an earlier station at Nether Bridge (1963-1981) downstream. The original Victoria Bridge site had to be closed, and a new site was opened some 40m downstream in February 2010, with a temporary site being used from 2007 to 2010.	High flows affected by Stramongate Bridge and Stramongate Weir just downstream. Kendal flood alleviation scheme (1972-1978) improved conveyance through Kendal. Gravel trap upstream of Kendal, constructed as part of the flood relief scheme, is believed to have reduced gravel input, causing significant scour through the gauging section, with a deeper channel. Although there were no works to Stramongate Weir itself, and little change between Stramongate Weir and the gauging station, flow data before the scheme agrees less well with Sedgwick downstream. Few gaugings before 1995. Portable cableway used for rating in the early 1980s, but few gaugings and some uncertainty in results. One rating applied to period of record (although no reliable high-flow rating available pre-scheme to 1978) valid post-scheme, based on gaugings and hydraulic modelling, and compared with Sedgwick. Few gaugings to confirm use of rating for lower flows before 1991.	Peak flow data pre-1978 has been marked as rejected due to Kendal flood alleviation scheme.	A steep, very wet catchment draining the south of the Lake District massif. Geology is predominately impervious Ordovician Silurian Slate with bands of flags and shale, small patches of Carboniferous Limestone and basal conglomerate. Patchy boulder clay cover in the middle and lower reaches. Sheep grazing with peat moorland in the extreme north.
73013	Rothay at Miller Bridge House	64.0	NY3712504195	337125.0	504195.0	54°25'45.3860"N 2°58'14.4876"W	54.42927	-2.97069	Rothay	Miller Bridge House	40.8	EA-CL	735022	73	1966-01-01		VA	80.0			true	false	false	false	false	false	false	true	false	true	false	false	true	N	1976-01-01	2023-09-30	4.357	0.055	2023-06-16	2023-06-16	141.0	2015-12-05	2015-12-05	0.353	1.182	2.21	10.32	15.12	0.31	17440	16045	92.001				42.7	88.7	321.0	587.0	874.0	2433	2392	0.1035	0.0285	0.7757	0.0694	0.0063	0.1347	0.0094	0.5732	0.2546	0.0103			1.0			0.0162	0.1475	0.71	0.409	0.866	305.9	51.22	71.1	98.6	13.1	14.91	7.63	329	191	0.18	44.5	59.51	0.619	0.731	0.0393	0.002			0.0035					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station in a natural catchment.	Velocity area station. Natural catchment, containing Rydal Water and Grasmere.	Initially a loose boulder control, but rating was unstable because of the mobile bed. Data quality poor. A wooden low flow control was installed 2/91 but deteriorating (2002). New timber control constructed July 2006. Flood berm on left bank. High flows not contained (flows down road and across field). Gaugings taken 170m d/s or by wading.	Revised data from 20/07/2006 to 31/12/2007 loaded on 11/08/2009 due to new rating: medium and low flows substantially reduced; 2007 runoff reduced by 20%.	Steep, wet catchment draining Borrowdale Volcanics with intermittent Boulder Clay. Predominantly rural catchment; gauging station immediately d/s of Ambleside.
73014	Brathay at Jeffy Knotts	57.4	NY3596503406	335965.0	503406.0	54°25'19.3410"N 2°59'18.2333"W	54.42204	-2.9884	Brathay	Jeffy Knotts	41.9	EA-CL	735123	73	1970-01-01		VA	48.0			true	true	false	true	false	false	false	true	false	false	false	false	false	N	1976-01-01	2023-09-30	5.032	0.005	1976-09-02	1976-09-07	161.1	2009-11-19	2009-11-19	0.338	1.155	2.355	12.93	18.61	0.24	17440	16067	92.127	1970-07-28		87.776	43.9	89.5	236.6	580.0	893.2	2867	2757	0.1044	0.0219	0.7937	0.0571	0.0065	0.2066	0.012	0.5782	0.1927	0.0032			1.0			0.0459	0.1137	0.71	0.435	0.907	299.8	49.37	84.4	122.2	14.4	15.39	9.03	291	96	0.17	45.1	56.58	1.356	0.747	0.0751	0.0013			0.0002					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Bed movement and weed growth require frequent rating changes.	Velocity area station in a straight section with stony bed, opened 07/09/1970. The original site at Jeffy Knotts consisted of a small kiosk with chart recorder. This was replaced during March-April 1998 with a full size well and building with power and telemetry. The station replaced the nearby site downstream at Brathay Hall which opened on 08/10/1965 and was terminated on 16/12/1980. Microfiche stage data is available for that site.	Rock bar downstream acts as control. All flows contained. Bed dredged between 19-24/07/1994 causing water levels to fall by approx. 0.2m. Flows seriously affected by weed growth and heavily vegetated banks (which restrict flow at high levels to centre of the channel). No permanent cableway or suitable bridge nearby, though flows above wade height can now be gauged by ADCP. Multiple low flow ratings to account for gravel deposition and weed growth, with a single modelled peak flow rating above 2m.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Steep, very wet moorland catchment, draining Langdale Fell in centre of Lake District, running into Windermere. Solid geology Silurian and Ordovician Volcanics and lavas, much exposed at outcrop. Some hill peat and boulder clay cover. Catchment contains four small, natural waterbodies. No catchment changes known.	Natural catchment, draining through Elterwater.
73015	Keer at High Keer Weir	48.0	SD5232071893	352320.0	471893.0	54°08'26.3320"N 2°43'52.7928"W	54.14065	-2.73133	Keer	High Keer Weir	7.7	EA-CL	733020	73	1971-01-01		FV				true	true	true	true	false	false	true	true	false	false	false	false	false	N	1976-01-01	2023-09-30	0.619	0.022	1976-08-27	2018-07-27	18.28	2015-12-05	2015-12-05	0.061	0.163	0.305	1.438	2.309	0.39	17440	12999	74.536	1971-05-18		12.421	8.9	30.4	92.9	149.1	271.9	1195	1158	0.1252	0.0747	0.773		0.0237	0.1384	0.018	0.8158	0.0135	0.0121		1.0			0.0808		0.7765	0.6	0.486	0.976	83.0	35.79	41.7	53.5	10.5	11.48	6.15	93	265	0.13	8.9	30.04	0.764	0.788	0.0744	0.0006			0.0029			1970..1989	1971-10-01..1990-09-20	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station opened in 1971 with a flat V weir gauging a natural, flashy catchment. Peak flow data available from 1990 onwards.	Flat-V weir, opened 1971, 3.5m wide, cross-slopes 1:10, set in vertical wing walls, approx 1m high. Superseded level-only open channel station (High Keer Bridge) which opened 1970.	Structure performs well, all flows contained within banks. A downstream recorder was installed in June 2007, and showed that the modular limit of the weir is around 0.6m. Station closed between October 1981 and 20 September 1990, and during this period the watercourse is believed to have been straightened. No cableway, but recent higher gaugings by ADCP. All gaugings at the higher flows are after 1990. One rating applied across period of record. Rating developed from gaugings. Rating revised after high flow gaugings in September 2011.	No daily flow data 09/08/2001 and 23/11/2001 due to instrument failure during foot and mouth outbreak. Peak flow data are rejected as unrepresentative before 1990 as stages of high flow events in the early period (to 1981) tend to be lower than from 1990; the reason is unknown - could be due to the changes to the downstream channel, a change in maintenance regime, just possibly differences in equipment, or could be a genuine change in flows. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	NE-SW trending catchment formed from series of ridges of moderate relief. Solid geology: Carboniferous Limestone and Millstone Grit overlain by extensive Boulder Clay, glacial sands and gravels. Wholly rural with forest plantations. No significant catchment changes.	Rather flashy regime from natural catchment.
73016	Trout Beck at Calgarth	24.49	SD3961299883	339612.0	499883.0	54°23'26.9841"N 2°55'53.3355"W	54.39083	-2.93148	Trout Beck	Calgarth	40.5	EA-CL	735328	73	1995-11-07		VA			29.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	2003-07-01	2023-09-24	1.698	0.025	2003-09-01	2003-09-01	44.46	2015-12-05	2015-12-05	0.126	0.474	0.843	4.101	6.133	0.3	7391	7268	98.336				43.0	142.9	326.6	583.3	780.7	2144	2213	0.0792	0.0268	0.8018	0.0817	0.001	0.0664	0.0017	0.4624	0.4644	0.0051			1.0			0.1241	0.2836	0.71	0.394	1.0	280.3	49.26	68.5	93.2	13.0	13.91	8.42	344	206	0.24	43.0	24.36	0.639	0.726	0.0403	0.0002			0.0004					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station 250 m upstream of Windermere lake; one of the four main lake tributaries.	Established Nov 1995 as a temporary site to monitor low flows. Timber bed control present 2004-2009, bridge-mounted radar installed 2018. Station good for low and medium flows, suspect at high flows. Troutbeck Bridge (EA station 735327) was approximately 1.2km upstream and recorded from June 1967 to April 1983 (possibly poor data quality).	Originally, pressure sensor in river that lacked accuracy. Whole river section subject to extensive work (from 10/07/1997) in strengthening the banks and re-grading the bed. A low timber bed control installed 10/09/2004 to improve stability but still prone to rating change and hence not replaced when destroyed in Nov 2009 flood; subsequently fully open channel again. Significant gravel deposition through reach during storm Desmond, Dec 2015. Levels over 2m affected by bridge immediately upstream causing significant afflux and some out of bank flow. Very high Windermere lake levels can also influence levels. Mobile gravel bed at the site results in frequent rating changes. Top end ratings are very uncertain and inconsistent, with lack of high gaugings.	Flows not held before 01/07/2003 due to poor quality. Low flows remain poor quality until the control was installed. Quality improved since then but still affected by frequent bed movements and rating changes. Missing data July 2010, Jan-Feb 2011, Feb 2023 and Sept-Oct 2023 due to instrument faults.	Steep, mountainous catchment rising to over 700m.	Very flashy.
73017	Kent at Bowston	70.61	SD4993596525	349935.0	496525.0	54°21'42.3898"N 2°46'19.0521"W	54.36177	-2.77196	Kent	Bowston		EA-CL	730120	73	2000-10		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		1999-10-01	2023-09-30	3.933	0.176	2018-07-27	2018-07-27	131.0	2015-12-05	2015-12-05	0.388	1.19	2.113	9.22	12.9	0.36	8766	8766	100.0	1999-10-01		67.88	57.7	116.2	239.4	471.8	815.5	1902	1919	0.0565	0.0633	0.8219	0.0439	0.0045	0.0562	0.0032	0.64	0.2849	0.01		0.0014	0.9986		0.0012	0.0641	0.186	0.71	0.454	0.948	177.5	43.29	59.5	82.5	12.2	20.66	10.06	272	169	0.21	57.7	70.62	0.82	0.819	0.0602	0.0015			0.0015					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened as replacement for Burneside (73003).	Velocity area station with purpose built shallow V low flow control. The site is downstream of the village of Bowston and has a good approach channel. Station commissioned October 1999 as a replacement for the site at Burneside (1500m downstream). Catchment area to Bowston is approx 5% less than Burneside. There is an overlap with Burneside of 8 months and a good correlation between the two data sets is apparent, peaks at Bowston being slightly less.	Left bank has been raised to contain anticipated flows of up to a one in a hundred year return period at 3m. Cableway for high flow gaugings. Two peak flow ratings applied across period of record. High flow gaugings at Bowston used to develop a single rating applied to both Burneside and Bowston.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11). Statistical analysis does not support merging of the flow records of 73003 and 73017.	Impervious lower Palaeozoic slate, flagstone and shale covered by boulder clay in the middle reaches of the valley, which supports permanent grassland, remainder for grazing. Rises in mountainous Lake District - steep descent to Kendal.	Highly flashy regime from a predominantly natural catchment.
74001	Duddon at Duddon Hall	85.66	SD1952689585	319526.0	489585.0	54°17'43.8670"N 3°14'16.6275"W	54.29552	-3.23795	Duddon	Duddon Hall	14.8	EA-CL	740102	74	1968-01-01		CB	160.0	105.0	14.5	true	true	true	true	false	false	true	true	false	false	false	false	true	SP	1968-03-01	2023-09-30	5.203	0.147	1976-09-07	1976-09-07	162.0	2009-11-19	2009-11-19	0.468	1.38	2.691	12.7	17.9	0.29	20302	20302	100.0	1967-12-14		120.913	17.5	131.8	296.1	541.1	820.8	2351	2267	0.0855	0.0166	0.7256	0.1611	0.0047	0.1375	0.0089	0.6425	0.2072	0.0006			1.0			0.2032	0.0193	0.71	0.337	0.985	210.3	53.69	62.4	84.0	12.7	22.05	11.09	315	156	0.09	19.1	85.25	0.793	0.866	0.0465	0.0002			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir gauging a steep, responsive catchment.	Station opened in 1967. Compound broad-crested weir, 22.9m overall, centre crest 7m and 0.3m below flanking crests of equal height.	All flows contained. Lower flows are gauged by wading but section is poor due to exposed rocks and skew flows. In the past some low gaugings were undertaken in the centre notch of the weir. High flow gaugings up to 1.463m were undertaken in 1968 from a portable cableway upstream of the weir. Improvements to the gauging section and to gauging kit may explain gauging deviation trends over time. The original theoretical equation applies across the whole record, supported by gaugings.	Peak flows: although 212 days missing in water year 1978/79, AMAX at 74008 Duddon at Ulpha (upstream) occurs on the same date and flows (allowing for catchment area) are comparable. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A steep catchment, with the river rising at Wrynose Pass and flowing through sparsely populated agricultural land. Geology composed of entirely impervious Ordovician Borrowdale Volcanics and Andesitic Lavas with patches of Boulder Clay and thin soils. Peat moss in north west. No catchment changes known.	Little urbanisation, but extremely flashy runoff. Abstractions for Barrow public water supply from Ulpha pumping station u/s. Variable compensation flow from Seathwaite Tarn.
74002	Irt at Galesyke	44.2	NY1355803823	313558.0	503823.0	54°25'20.8794"N 3°20'01.5371"W	54.42247	-3.33376	Irt	Galesyke	54.2	EA-CL	743008	74	1967-01-01		FV	31.0		14.6	true	true	false	true	false	false	false	true	false	false	false	false	false	SPI	1967-12-01	2023-09-30	3.482	0.0	2013-10-01	2013-10-01	47.09	1968-10-02	1968-10-02	0.449	1.44	2.48	7.45	9.62	0.47	20393	20352	99.799	1967-12-08		22.285	54.1	71.7	383.2	702.9	973.1	2738	2629	0.0277	0.0012	0.8482	0.0426	0.0031	0.0426	0.003	0.5593	0.3269	0.0014			1.0				0.0776	0.71	0.367	0.746	384.6	52.21	81.9	115.2	14.1	13.07	7.84	377	218	0.2	55.2	43.99	0.542	0.855	0.0281	0.0003			0.0001			1967..1989	1968-12-01..1978-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir replacing earlier velocity area station. Station gauges a very wet catchment with steep headwaters and flow regime affected by Wast Water, 1km upstream.	Station opened December 1967 on a natural channel with a plastic pipe, then gabion as bed control. The control was modified in September 1968. Flat V weir constructed 20m upstream in September 1990. The weir was refurbished in July and August 2006; the datum plate was reset on 19/04/2007 and levels from the date of the refurbishment were adjusted by the change.	Flows contained to 1.3m, significant out of bank flow thereafter. Flows above bankfull are extremely suspect as there is significant unmeasured out of bank flow. Cableway until 2002. Multiple peak flow ratings applied across period of record, the most recent is valid from April 2007. Ratings show good fit to corresponding gaugings. Flood Studies Report grade B.	No data during weir construction May-Sep 1990. No data 04/07/2006 - 15/08/2006 due to weir repairs. High daily mean flows pre-Oct 1978 are often higher than peak flows and uncertain; peak flows rejected pre-Oct 1978 pending review of the early pre-digital rating history. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Catchment subject to heavy rainfall, with rapid runoff in short, steep rivers. Entirely impervious Orodovician Borrowdale Volcanics and Andesitic Lavas rocks with Drift cover along river valley. Landuse mainly sheep farming on rough pasture, with heath and moorland. No known catchment changes.	Site is 1km downstream of Wast Water which is important for public water supply and major industrial purposes; greatly affects low flows and subdues hydrograph variation.
74003	Ehen at Bleach Green	44.2	NY0838715393	308387.0	515393.0	54°31'31.8267"N 3°25'01.2698"W	54.52551	-3.41702	Ehen	Bleach Green	110.4	EA-CL	744111	74	1973-01-01		CC		41.0	9.7	true	true	false	true	false	false	false	true	false	false	false	false	false	SPI	1973-08-01	2023-09-30	2.819	0.124	1976-08-22	1976-08-23	80.2	2009-11-19	2009-11-19	0.409	0.85	1.46	6.72	9.31	0.38	18323	18262	99.667	1973-10-24		33.995	110.9	123.2	368.7	633.5	893.6	2567	2542	0.1407	0.001	0.5987	0.1786	0.0022	0.2316	0.0065	0.3015	0.3872	0.0039			1.0		0.0307	0.0024	0.0952	0.71	0.417	0.74	323.3	41.89	68.6	94.9	13.2	16.28	7.59	372	291	0.21	111.1	44.59	0.528	0.895	0.0323	0.0			0.0			1972		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir gauging the outflow from Ennerdale Lake.	Compound Crump profile weir from August 1973; 10.6m overall width; centre notch 3.0m wide and 0.3m lower than flanking crests each 3.5m wide. Measures flood discharge and compensation water from Ennerdale Water 800m u/s. The station was formerly known as Ennerdale Weir. Replaced narrow flume with side weir regarded as control for a rated section. Eel pass installed 2016.	Wingwalls raised from 1.5m to 2.0m in 1999. However, flow above around 1.4m stage bypasses the station on right bank - observed during the large event in October 2008. Although a baffle plate has been installed, well surging, which can be over 20 mm at higher stages, can be a problem. Eel pass installed 2016. Permanent cableway, but gaugings do not include bypassing flow. Gaugings also carried out 30m downstream of weir. One rating applied, based on gaugings although above 1.5m rating is uncertain due to bypassing.	Considerable uncertainty due to bypassing in the largest events, such as October 2008 and November 2009. No data are presented for the earlier station (before 1973). Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Catchment geology of completely impervious Skiddaw Slates in the north west, Borrowdale Volcanics in the south east with intrusions in the centre. Mostly rough sheep grazing, with forestry on drift cover along river valley. No catchment changes known.	Although gauging Ennerdale lake outflow, the regime is much more responsive than other lake outflows in the area. Ennerdale Water (0.8 km u/s) provides public water supply for West Cumbria and industrial supply for Sellafield. Compensation flow.
74005	Ehen at Braystones	125.5	NY0090906051	300909.0	506051.0	54°26'24.6220"N 3°31'45.7732"W	54.44017	-3.52938	Ehen	Braystones	10.1	EA-CL	744312	74	1974-01-01		FV	90.0		11.5	true	true	false	true	false	false	false	true	false	true	false	false	true	SP	1974-01-01	2023-09-30	5.4	0.431	1976-09-02	1976-09-02	100.0	2009-11-19	2009-11-19	0.997	1.92	3.14	12.2	17.0	0.42	18170	18164	99.967	1973-10-24		73.04	9.5	75.3	157.6	500.0	893.6	1817	1753	0.1015	0.0978	0.6629	0.0824	0.0247	0.1674	0.1145	0.5059	0.1545	0.0316	0.066	0.0576	0.5465	0.3299	0.0355	0.0165	0.4918	0.69	0.497	0.897	165.8	35.35	51.6	69.2	11.7	38.52	20.56	219	241	0.17	9.6	129.5	0.997	0.783	0.0648	0.0119	0.659	0.562	0.0111	0.764	0.53	1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard shallow V weir. Low flows dominated by compensation flow from Ennerdale.	Non-standard shallow V control installed 1997. Superseded a velocity area station with unstable rating. Weir lowered summer 2007.	Cableway at site. Stony bed. Bypassed in extreme floods - comes out of bank u/s at about 2m and bypasses station; thus flow measured is not total flow. Velocity area station had unstable rating - gravel bar low flow control with significant weed growth problems. Multiple peak flow ratings applied across period of record. Rated by current meter to 2.4m. Ratings allow for changes in channel and weir structure. Change in datum in 2007 when weir was lowered unknown.	Significant bypassing in major events, such as November 2009 when embankments were breached. Flows above 1.3m likely to be underestimated. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in September 2023 (WINFAP Files v12).	Geology of the upper catchment is impervious Borrowdale Volcanics in east, Skiddaw Slates in west, the whole overlain in north west by Carboniferous Limestone, Coal Measures and patches of Permo-Triassic Sandstone. Drift covered. Some urban development in the small towns of Egremont and Cleator Moor in the lower catchment, middle reaches arable, remainder sheep pasture. Towns situated close to the channel or tributaries. Includes Ennerdale Water. No known catchment changes.	Low flows dominated by compensation flow from Ennerdale; major exports for water supply.
74006	Calder at Calder Hall	44.8	NY0350104491	303501.0	504491.0	54°25'35.9654"N 3°29'20.1206"W	54.42666	-3.48892	Calder	Calder Hall	26.4	EA-CL	743509	74	1964-01-01		FV		21.0	15.5	true	true	false	true	false	false	false	true	false	false	false	false	false	G	1964-08-01	2023-09-30	1.942	0.081	1976-08-23	1976-08-23	53.12	1969-09-10	1969-09-10	0.297	0.728	1.144	4.28	6.311	0.39	21610	20970	97.038	1973-12-01		59.691	26.7	94.4	270.0	472.7	672.9	1843	1828	0.0568	0.0619	0.7125	0.1645	0.0032	0.0811	0.0558	0.7479	0.1125	0.0028	0.2125		0.7875			0.2541	0.3721	0.71	0.423	0.999	161.4	47.29	48.0	62.8	11.5	16.16	10.25	284	241	0.36	26.7	43.9	0.446	0.603	0.0313	0.0013			0.0017					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging a very steep catchment with flashy regime. Some influences on flow due to abstractions and low flow augmentation.	Station opened December 1973. Flat V weir 12m wide, 1:20 cross-slope, measures low and medium flows. Weir repaired in 1990, 1995 and 2001. Right bank 4m high, left bank 2.56m high.	Thought to drown at very high flows. All flows are contained within bank. Slight silting occurs, but flashy nature keeps structure clear although makes gauging high flows very difficult. No weed growth problem. Stilling well leaked intermittently until repaired in 1989. Permanent cableway installed in 2002. One peak flow rating applied to period of record. Rating derived from current metering at low and medium flows.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	A very steep, flashy catchment. Upper catchment geology comprises impervious Skiddaw Slates and Borrowdale Volcanics; lower catchment Triassic Sandstone. Land use is mostly rough sheep grazing in the upper reaches, with meadow and permanent pasture lower down. Soil cover is very thin. Small percentage of the catchment is forested. No catchment changes known.	Flashy response. From 1/1/80 low flow augmentation by pumping from the St Bees sandstone. Industrial abstraction which ceases during times of low flow.
74007	Esk at Cropple How	70.2	SD13109777	313100.0	497770.0	54°22'04.8165"N 3°20'20.5589"W	54.368	-3.33904	Esk	Cropple How	6.2	EA-CL	742006	74	1974-01-01		VA	90.0		30.0	true	true	false	true	false	false	false	true	false	true	false	false	true	N	1976-01-01	2023-09-30	4.702	0.076	1983-08-14	1983-08-14	96.6	2009-11-19	2009-11-19	0.444	1.37	2.56	11.1	15.9	0.29	17440	17440	100.0	1974-10-01		103.648	6.2	79.1	281.0	624.0	973.1	2431	2308	0.0594	0.0153	0.8586	0.0407	0.0066	0.1044	0.0033	0.6252	0.2537	0.0038			1.0			0.0353	0.137	0.71	0.416	0.964	231.8	45.51	66.4	90.3	12.8	21.54	11.43	318	251	0.19	6.9	70.04	0.957	0.732	0.0582	0.0003			0.0001					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging steep, rural flashy catchment in the western Lake District.	Velocity area station, opened October 1974. Channel 17.3m across, banks about 2m.	An Open channel site where a rough stone ford downstream forms some control for low flows. Changes to the ford and problems with gauging sites has necessitated frequent rating changes at the site. Due to the nature of the rough control, there is low confidence in low flow data although no known major problems. Low Flows - Cobble accretion problems at control variably affecting levels and low flow derivation. High Flows - no known problems up to bank full. Above bank full, rating does not include bypass flow.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	A steep rural, flashy, catchment with geology comprising impervious Ordovician andesitic lavas and tuffs with massive granitic intrusion, virtually drift free. Mountainous catchment (maximum altitude at Scafell Pike), with no industry or urbanisation, supports rough pasture and moorland for sheep grazing; grassland in valley. Catchment includes Burnmoor Tarn. No catchment changes known.	Flashy regime with no known artificial influences.
74008	Duddon at Ulpha	47.9	SD20919472	320910.0	494720.0	54°20'30.7453"N 3°13'04.9995"W	54.34187	-3.21806	Duddon	Ulpha	75.9	EA-CL	740101	74	1971-01-01		CB	60.0		6.9	true	true	false	true	false	false	false	true	false	false	false	false	false	SP	1973-01-11	2023-09-30	3.217	0.029	1976-08-29	1976-08-29	77.8	2009-11-19	2009-11-19	0.283	0.779	1.62	8.142	11.4	0.26	18525	18423	99.449	1971-01-11		68.689	75.5	175.9	358.2	619.2	820.8	2604	2517	0.0657	0.0059	0.8389	0.0734	0.0076	0.1363	0.0065	0.6029	0.2481	0.0006			1.0			0.0245	0.0265	0.71	0.323	0.974	251.3	54.72	69.1	95.0	13.2	14.82	7.81	373	229	0.15	76.3	47.05	0.772	0.729	0.047	0.0002			0.0			1972		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard three bay compound broad-crested weir gauging a steeply sloping flashy catchment containing Seathwaite Tarn.	Station opened 1971. Non-standard compound broad-crested weir, three different crest levels (heights zero, 0.31m, 0.54m) of varying widths and lengths. Structure at obtuse angle on a gentle right bend. Approach banks are man-made stone walls. Eel passes installed in 2019.	The bed is concrete and there is no silting. Stony bed. Weir walls contain all flows. Levels may be affected by surging during high flows. No cableway. Waded current metering 100 m downstream of weir. Although well-gauged to around 0.72m, the two higher gaugings (around QMED) were obtained in 1979 using a portable cableway and accuracy is uncertain. The post-1982 peak flow rating is applied across the period of record pending review, but there is considerable uncertainty in top end ratings and limited drivers for improvement at this site.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Geology of impervious Ordovician Andesitic Lavas, virtually drift free. Steeply sloping, thin soils, sheep pasture. No urbanisation. Catchment includes Seathwaite Tarn. No catchment changes known.	Major abstraction 10m upstream for Barrow public water supply. Compensation flow from Seathwaite Tarn 8km upstream.
75001	St Johns Beck at Thirlmere Reservoir	42.1	NY31321950	331320.0	519500.0	54°33'57.7534"N 3°03'49.3983"W	54.56604	-3.06372	St Johns Beck	Thirlmere Reservoir	159.5	EA-CL	750605	75	1935-01-01		CC		48.0	12.9	true	true	false	true	false	false	false	true	false	false	false	false	false	SP	1935-10-01	2023-09-30	0.85	0.072	1975-10-28	1975-10-30	97.96	2015-12-05	2015-12-05	0.159	0.174	0.213	1.711	3.845	0.39	32142	28032	87.213	1973-01-01		20.196	163.8	188.5	464.9	732.8	945.4	2676	2598	0.1393	0.0006	0.5834	0.2003	0.0034	0.1801	0.0021	0.2979	0.442	0.0039			1.0			0.2665	0.0135	0.71	0.38	0.721	285.4	52.29	69.1	93.5	13.1	14.51	7.01	465	324	0.14	163.9	41.87	0.38	0.845	0.0178	0.0			0.0			1973		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir gauging the compensation and flood discharges from Thirlmere reservoir.	Compound Crump profile weir, 13.6m wide overall, central notch 1.96m wide and 0.31m lower than flanking crests, each 5.5m wide. Station building raised above flood level in 2001. Station measures compensation and flood spill discharges from Thirlmere reservoir approx. 1km upstream. Replaced a rectangular thin-plate weir in January 1973.	Modular limit 0.7m (centre crest), 0.8m (side crests), 1.04m (full structure). Station is bypassed on both banks at high flows, with significant out of bank flow at the highest flows. The bridge downstream can be blocked by debris, backing-up the weir. During the 2005 event the bridge was almost totally blocked with debris causing a significant rise in levels. The highest flows have been compared with the spillweir (Thirlmere Dam Wall) at Thirlmere Reservoir. Rating from theory and check gaugings to 1m, above this from weir equations at Thirlmere Dam Wall and stage-stage relationship between the two stations. More high flow gaugings necessary to confirm or improve the rating which is understood to underestimate significant bypass flow.	Daily mean flow record begins in 1935 and is missing from 1937-45, 1968-69 and 1970-72. Naturalised monthly flows 1964-1966. Confidence in the flow record before the installation of the compound Crump weir in 1973 is low.	Catchment composed entirely of impervious Ordovician Borrowdale Volcanics, runoff from these into the reservoir is rapid. Rock outcrop, rough pasture with heather. Sheep grazing, some forestry.	Flow pattern reflects heavy abstraction, compensation flows and flood spill discharges of Thirlmere 1km upstream. Natural water level of Thirlmere was raised 17m by impounding dam at beginning of 20th Century. Abstractions from Thirlmere Reservoir for Manchester, pumped from Dunmail Raise. Catchwater channel diverts streams from Mill Gill to Helvellyn Gill into Thirlmere Reservoir at all but highest flows.
75002	Derwent at Camerton	663.0	NY037305	303700.0	530500.0	54°39'37.2754"N 3°29'39.7445"W	54.66035	-3.49437	Derwent	Camerton	16.7	EA-CL	753015	75	1960-01-01	2009-11-20	VA	400.0		7.1	true	true	true	true	false	false	false	false	false	false	true	false	false	SP	1960-09-01	2009-11-20	26.623	1.15	1976-09-06	1976-09-06	561.0	2009-11-20	2009-11-20	3.378	9.847	16.78	61.55	81.25	0.49	17978	17978	100.0	1960-08-12	2010-10-01	203.936	17.0	78.0	216.7	553.1	945.4	1914	1810	0.1036	0.0448	0.7195	0.0901	0.0114	0.1398	0.0735	0.5582	0.1895	0.0105		0.0855	0.8258	0.0887	0.0088	0.0608	0.4261	0.63	0.438	0.844	208.7	41.92	54.5	73.1	11.7	67.37	35.04	271	313	0.13	18.1	661.92	1.38	0.878	0.0746	0.003			0.004					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station for the Derwent catchment, closed after being destroyed by flooding in 2009.	Velocity area station opened August 1960, destroyed by fire in 1986 but replaced, closed after being destroyed by November 2009 flood. The farthest downstream flow measurement on the River Derwent, channel 30m wide.	Stony, gravely bed. Station had permanent cableway. Full range calibration, all flows contained. No by-passing owing to steep banks (left is artificial flood bank). Footbridge acted as high flow control 50-60m downstream of the site. One high flow rating applied across period of record. Rating developed from gaugings. Gauged to a high level - several over 200m3/s, with a further gauging at just over 300m3/s. Rating and flows for Nov 2009 event from hydraulic modelling. Flood Studies Report grade A1.	Opened in 1960, reliable record since 1961. Naturalised monthly flows from 1962 to 1967. The November 2009 flood was exceptional. Both banks were severely damaged and the footbridge downstream largely demolished. Flows spilled over the banks downstream of the station. The flow was estimated by hydraulic modelling at 700 m3/s (720m3/s +- around 60 m3/s), attempting to allow for the channel changes.	Upper third of catchment is moorland draining Ordovician rocks; Borrodale volcanics or Skiddaw group. Drift covered valley floors support grazing and some arable farming. All flows from Derwent Water, Bassenthwaite Lake, Buttermere, Crummock Water, Loweswater and Thirlmere flow through station, giving a slowly changing flow pattern with hydrographs of differing origin superimposed. Towns of Keswick and Cockermouth are in the catchment. No catchment changes known.	Compensation flows from Thirlmere Reservoir and Crummock Water will affect low flows.
75003	Derwent at Ouse Bridge	363.0	NY1987832134	319878.0	532134.0	54°40'40.3286"N 3°14'38.7637"W	54.67787	-3.2441	Derwent	Ouse Bridge	67.7	EA-CL	751110	75	1968-01-01		VA	140.0		12.3	true	true	true	true	false	true	false	true	true	false	false	false	false	SP	1968-03-01	2023-09-30	17.348	0.303	1984-07-26	1984-07-26	341.7	2015-12-06	2015-12-06	2.032	6.326	10.87	40.73	53.14	0.51	20302	20295	99.966	1968-02-21		104.507	67.3	87.6	307.7	610.0	945.4	2155	2064	0.1205	0.0196	0.708	0.1043	0.0072	0.1607	0.0361	0.4989	0.2572	0.0092		0.0099	0.9901			0.0893	0.2954	0.63	0.439	0.789	247.4	44.49	61.8	83.0	12.3	41.53	21.09	334	331	0.13	67.3	363.04	1.479	0.759	0.0768	0.0018			0.0026					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging outflows from Bassenthwaite Lake.	Velocity-area station opened March 1968. Channel 30m wide immediately downstream of Ouse Bridge itself, which is at the outlet to Bassenthwaite Lake. Station hut was originally on left bank, moved to right bank 1994/95, and rebuilt after Nov 2009 event.	Low flow control is an artificial pipe about 120m downstream, close to an island which acts as a control for higher flows. Stony bank without much weed growth. Performs reasonably well at flood flows. New floodbank, 2006, constructed on right bank, raising containment level from 2.3m to 2.8m; rarely overtopped. However, the new flood bank was overtopped in the exceptional November 2009 event, which demolished the walls of the gauging hut (see photo). Station has permanent cableway. Rated by current meter to top of flood banks, with modelled rating above. Ratings applied before and after bank raising in June 2006, and after effects of November 2009, 2012 and 2015 events.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	An entirely rural catchment rising to the summit of Helvellyn. Entirely on impervious Lower Palaeozoic rocks supporting mainly rough pasture and moorland with deeply incised headwaters. Drift is confined to the valley floor. Catchment contains two large natural water bodies, Derwent Water and Bassenthwaite Lake, also Thirlmere Reservoir. Entirely rural, mainly rough pasture and moorland. No catchment changes known.	Derwent Water, Bassenthwaite Lake and Thirlmere Reservoir moderate flood discharges.
75004	Cocker at Southwaite Bridge	116.6	NY13092809	313090.0	528090.0	54°38'25.4778"N 3°20'53.2989"W	54.64041	-3.34814	Cocker	Southwaite Bridge	59.5	EA-CL	751613	75	1967-01-01		VA	130.0		20.1	true	true	true	true	false	false	false	true	false	false	false	false	false	SP	1967-12-01	2023-09-30	5.468	0.146	1976-09-07	1976-09-07	166.1	2009-11-19	2009-11-19	0.654	1.772	3.172	12.95	17.58	0.42	20393	20393	100.0	1967-04-05		52.738	57.4	96.8	274.2	548.9	853.0	2157	1976	0.0823	0.0176	0.7062	0.1518	0.002	0.1331	0.0374	0.549	0.2414	0.0029		0.0005	0.9995			0.0508	0.2542	0.63	0.483	0.83	289.7	40.13	56.1	76.6	11.9	23.42	12.26	300	318	0.15	57.6	116.17	0.748	0.672	0.0486	0.0001			0.0003			1966		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a catchment draining the Cumbrian mountains with some reservoirs.	Velocity area station, channel is approximately 17m wide. Station is often used in conjunction with Scalehill (75016).	Control is a pipeline downstream, and mill weir 137m downstream at higher flows. Station has permanent cableway and flood banks containing most flows; bypassing from upstream on right bank at high flows. Suffers from silt, weed growth and minor bed movements, hence many rating changes. Low and medium flows of limited accuracy. Multiple peak flow ratings applied across period of record. Rated by current meter, with model results for higher stages.	WY1966/1967 rejected due to substanital under-estimation of the true AMAX. October 2008 flood appears to have resulted in subsequent underestimation of low flows and overestimation of high flows: data subject to revision. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Catchment drains roughly northwards from the Cumbrian mountains, with geology comprising Lower Palaeozoic rocks and granite intrusions, under moorland. Headwaters are deeply incised, while lower river flows in broad glacial trough. Land use is mainly grazing, with some arable on a broad swathe of drift in the river valley. No known catchment changes.	Catchment contains Crummock Water, Buttermere and Loweswater; catchment is sometimes responsive in spite of these. Low flow compensation pumped from Crummock Water. Occasional evidence of low flow regulation (e.g. July 1988).
75005	Derwent at Portinscale	235.0	NY2519423884	325194.0	523884.0	54°36'16.4252"N 3°09'34.4324"W	54.60456	-3.15956	Derwent	Portinscale	72.6	EA-CL	751007	75	1972-01-01		VA			5.9	true	true	true	true	false	false	false	false	false	false	false	false	false	S	1972-01-01	2015-12-05	12.277	0.0	1984-07-17	1984-07-27	299.0	2015-12-05	2015-12-05	1.35	4.165	7.4	29.13	38.53	0.44	16045	16030	99.907	1971-12-17		105.2	75.3	143.4	344.9	628.3	945.4	2372	2238	0.1079	0.0155	0.7185	0.1115	0.0066	0.1394	0.0291	0.4959	0.2885	0.0106		0.0152	0.9848			0.1178	0.2809	0.64	0.408	0.846	245.8	47.61	66.4	89.9	12.6	30.59	15.96	365	334	0.13	75.3	237.24	1.351	0.747	0.0627	0.0021			0.0029					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station located between Derwent and Bassenthwaite lakes.	Opened December 1971 as a velocity area station located between Derwent (upstream) and Bassenthwaite (downstream) lakes. Non-standard shallow V weir installed in March 1993.	Initially, a mobile gravel shoal immediately downstream acted as a control, with bank stability provided by wooden shuttering. This was not stable and a trench-piled non-standard shallow V weir was installed in March 1993 with bank stability provided by stone embankments. The station may be bypassed a little before the bankfull level at the station - roughly, a little above QMED. Bypassing is significant in the larger floods. Station has permanent cableway. Shifting ratings particularly at the low end. Results also appear reasonable in relation to Ouse Bridge downstream, allowing for attenuation. Mean daily flows have multiple ratings before weir construction, one thereafter. For peak flows, ratings simplified to separate (though similar) ratings before and after weir construction. Rated inbank by current meter to approximately 2.6m and out of bank by hydraulic model. Significant out-of-bank flow and hysteresis at the very largest events. Two peak flow ratings across period of record.	No data after the 5th December 2015 due to rating changes during/following storm Desmond. Re-rating following temporary closure ongoing. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Geology mainly Borrowdale Volcanic series with Skiddaw Slates in the north and igneous intrusions east of Keswick (e.g. Castlehead Dolorite, St.John's and Threlkeld Microgranite). Boulder Clay overlies geology within the valleys of the north, with peat within the upland areas. Land-use mainly grasslands along river valley with the remainder heather and moorland. Catchment rises to the summit of Helvellyn. No catchment changes known.	Regime affected by controlled releases from Derwent Water and spill and controlled releases from Thirlmere reservoir.
75006	Newlands Beck at Braithwaite	33.9	NY24052393	324050.0	523930.0	54°36'17.2977"N 3°10'38.2162"W	54.6048	-3.17728	Newlands Beck	Braithwaite	74.6	EA-CL		75	1968-01-01	1997-05-13	VA	44.0		37.4	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1968-09-01	1997-05-13	1.628	0.0	1970-06-09	1997-04-22	36.71	1995-01-31	1995-01-31	0.038	0.426	0.814	3.805	5.368	0.31	10482	5484	52.318				77.5	148.9	341.2	598.5	838.0	2382	2388	0.0512	0.0149	0.8144	0.1105	0.0064	0.1419	0.0278	0.5512	0.2735	0.0056			1.0			0.0037	0.045	0.64	0.459	0.999	380.4	41.8	63.3	84.7	12.4	12.85	7.0	360	47	0.25	77.6	33.98	0.603	0.606	0.0374	0.0009			0.0015					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station. Closed in 1997. Cause of low runoff under review.				Small, steep, wet catchment, entirely on impervious Ordovician rocks.
75007	Glenderamackin at Threlkeld	64.5	NY3226024796	332260.0	524796.0	54°36'49.5196"N 3°03'01.4777"W	54.61376	-3.05041	Glenderamackin	Threlkeld	136.3	EA-CL	750504	75	1969-01-01		FVVA	75.0		27.0	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1969-04-01	2023-09-30	2.679	0.041	1976-08-26	1976-08-26	106.1	2015-12-05	2015-12-05	0.209	0.638	1.201	6.664	10.22	0.3	19906	16810	84.447	1969-04-01		65.666	137.1	194.8	319.7	577.2	862.5	1836	1723	0.1088	0.0248	0.8113	0.0519	0.0006	0.108	0.0501	0.5752	0.2632	0.0036		0.0556	0.9444			0.1256	0.5877	0.62	0.395	0.999	179.8	44.96	55.7	74.7	11.5	19.35	9.26	352	348	0.13	137.1	64.68	0.654	0.876	0.0527	0.0003			0.0005			1985..1992		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard shallow V weir gauging a natural, high relief catchment in the northern Lake District. Flow record contains large gaps.	Opened April 1969 as a velocity-area station with gabion basket low flow control which was prone to erosion and drowning. A non-standard 13m wide weir was built in 1986. Non-standard shallow V concrete weir was constructed 1998, reduced by 0.2m in 2008.	Significant bypass flow on the right-bank floodplain from around 2.2m. Weir drowned at higher flows. Cableway present to measure in bank flows. Three peak flow ratings applied across period of record, the pre-1998 rating is a consolidation of multiple early ratings, the most recent is valid from July 2008 after lowering of weir. Top-end ratings are from hydraulic models.	Station closed Jun 1981-Jan 1986, data quality poor pre-closure. Large gaps are present in the daily flow series. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	High relief, natural catchment in northern Lake District; broad main valley below 200m, flanking fells exceed 700m. Geology principally Skiddaw Slates, with Borrowdale volcanics on southern watershed and granite boss in the south. Extensive Boulder Clay overlies the geology with alluvium within the river valley and peat on upland reaches. Land-use rural and moorland.	No known artificial influences on flow regime.
75009	Greta at Low Briery	145.6	NY2855824216	328558.0	524216.0	54°36'28.9196"N 3°06'27.2864"W	54.60803	-3.10758	Greta	Low Briery	99.7	EA-CL	750806	75	1971-01-01	2015-12-05	VA			9.2	false	true	true	true	false	false	false	false	false	false	false	false	false	S																			1971-03-25		110.942	101.1	177.3	345.3	640.9	945.4	2116	2025	0.1125	0.0174	0.7419	0.1038	0.002	0.1269	0.0365	0.5114	0.2992	0.0047		0.0245	0.9755			0.1535	0.3547	0.63	0.399	0.91	227.1	47.22	60.6	81.2	12.0	25.88	13.64	378	327	0.09	107.6	146.99	0.834	0.795	0.0522	0.0001			0.0004			1970		cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station. Level only from 1999. Closed in December 2015 and will be relocated to Riddings Wood upstream.	Velocity area station opened March 1971. Station operated from 1999 as level only but was important for flood forecasting and a rating was developed for high flows. Flood warning site for Keswick. Massive channel changes through gravel deposition occurred at the station during Storm Desmond on 05/12/2015. The gauging station also sustained damage. A decision was made to relocate upstream to Riddings Wood,a location that is expected to offer channel stability to enable the production of reliable flows and will be less prone to damage during exceptional floods.	Natural rock bar downstream acting as a control where the channel divides and the gradient becomes steeper. Flows contained to the highest stage. There was a permanent cableway, but confidence in high flow gaugings was low due to high velocities and poor gauging section, and the cableway has now been removed. Station was operated as level only from 1999 until 2015 and was no longer gauged by current meter. However, the station remained important for flood forecasting, had been gauged to a high level and hydraulically modelled, so a rating was applied to high flows. Low flows below 0.5m after 1999 are flagged as "beyond limit" (i.e the rating does not apply to low flows). Multiple peak flows ratings applied, however only one shown which is the upper limb of all ratings. Low flow re-rating adjustments are not shown. Rating derived by current meter to 2m with hydraulic model results beyond.	In November 2009 there was some very minor spill on left bank, and the stage trace had some oscillations, reflecting the high velocities and unstable flow conditions. The peak flow in the December 2015 is uncertain due to significant gravel movement during the event; value derived based on post-event survey. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Geology is impervious Ordovician Skiddaw slates, Borrowdale Volcanics and some igneous intrusions, covered with Boulder Clay below 200m. An entirely rural catchment, rising to the summit of Helvellyn, with sheep farming predominating on the rough pasture. The high ground is moorland. No significant catchment changes.	Thirlmere Reservoir controls part of catchment - spills and regulation releases.
75010	Marron at Ullock	27.7	NY07432376	307430.0	523760.0	54°36'01.8085"N 3°26'03.9766"W	54.6005	-3.43444	Marron	Ullock	93.8	EA-CL		75	1972-01-01	1981-12-31	FV		4.2	18.6	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1972-05-01	1977-12-31	0.811	0.081	1972-10-07	1972-10-07	13.88	1977-10-30	1977-10-30	0.116	0.288	0.489	1.812	2.627	0.48	2071	2071	100.0				93.8	119.5	179.4	350.0	571.4	1709	1515	0.0841	0.0706	0.7529	0.0696	0.0151	0.1044	0.1592	0.6614	0.0626	0.0034		0.2046	0.3905	0.4049	0.0501	0.0088	0.5841	0.63	0.541	0.964	121.8	32.73	44.3	59.3	10.9	10.11	5.11	206	308	0.33	94.0	26.83	0.688	0.672	0.0657	0.0008			0.0017					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir. Closed in 1977.				Small, rural catchment. Mostly grassland.
75016	Cocker at Scalehill	64.0	NY1489921430	314899.0	521430.0	54°34'51.1805"N 3°19'05.4548"W	54.58088	-3.31818	Cocker	Scalehill	95.1	EA-CL	751612	75	1974-01-01		MIS	6.7		5.8	true	false	false	false	false	false	false	true	false	false	false	false	false	S	1974-03-18	2023-09-30	3.621	0.076	1988-07-03	1988-07-04	130.8	2009-11-19	2009-11-19	0.372	1.164	2.184	8.086	11.0	0.41	18094	18018	99.58				93.2	111.2	307.0	565.5	853.0	2399	2251	0.0568	0.0117	0.6933	0.1662	0.0012	0.0979	0.018	0.5139	0.3009	0.0029			1.0			0.0426	0.1359	0.66	0.443	0.713	330.7	43.79	64.3	88.3	12.7	14.25	7.01	324	351	0.1	93.3	63.28	0.432	0.863	0.0309	0.0001			0.0001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard compound Crump weir gauging an entirely rural catchment. Downstream of Crummock water, low flows are mostly compensation flows.	Non-standard compound weir with Crump centre section. Straight approach upstream, uniform flow. Generally used in conjunction with 75004 Southwaite.	Stable rating to bankfull (1.215m); above this structure completely drowned, flow over both banks (upstream bypassing on left bank above 0.8m). Low flows good. Pebble/gravel bed, with stone walls at either side. Walls eroded and prone to flooding. No permanent cableway. The Cocker was modelled in 1997 (ISIS Hydrodynamic Model) as part of the River Derwent S105 Flood Mapping Study in 1997; rating reviewed but not recalculated. Rated by current meter to 0.74m.	29/10 - 7/11/97 data suspect due to vandalism and repair of sluice gates at Crummock.	Entirely rural, heathland, moorland and rough pasture over impervious Ordovician Skiddaw Slates and Borrowdale Volcanics. Substantial outcrop of granitic intrusion. Drift covered to the elevation of Crummock Water. Catchment contains Buttermere, Crummock Water and Loweswater, which run into each other. No catchment changes known.	Downstream of Crummock Water, flow regulated, mostly compensation at low flows.
75017	Ellen at Bullgill	96.0	NY096384	309600.0	538400.0	54°43'56.7148"N 3°24'19.4187"W	54.73242	-3.40539	Ellen	Bullgill	26.6	EA-CL	754016	75	1975-01-01		FV	2.1		16.8	true	true	true	true	false	false	true	true	false	true	false	false	true	PG	1976-01-01	2023-09-30	2.434	0.017	2023-09-30	2023-09-30	46.8	2015-12-05	2015-12-05	0.308	0.826	1.43	5.44	7.63	0.49	17440	17301	99.203	1975-09-30		34.958	27.8	60.8	157.2	284.6	650.0	1152	1106	0.037	0.1126	0.8168	0.0149	0.0162	0.0385	0.2154	0.701	0.0327	0.0098	0.0198	0.5606	0.1664	0.2532	0.005	0.0002	0.8284	0.62	0.487	0.982	78.4	34.38	39.9	51.5	10.7	31.13	15.96	164	322	0.3	27.8	102.56	0.784	0.816	0.072	0.0039			0.0064	0.621	0.665	1975		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir gauging catchment with steep headwaters in the Uldale Fells. Some abstractions and effluents with limited impact on runoff.	Flat V weir (1:20 side slopes) 11m wide installed in 1975. Right bank 1.77 m high, left bank 1.67m high.	Full range covered with stable rating; drowns above 0.63m. Some bypassing below road bridge, cutting off bend on left bank. Suffers from slight accretion. It has been suggested that reductions in channel maintenance in recent years have increased water levels. Permanent cableway, and gauged above banktop (though only inbank). The photos include one taken during gaugings in the November 2009 event, with significant water on both floodplains. One rating applied across period of record - re-rated to take account of floodplain flow (Peak Flows v12). Station rated by current meter to 1.92 m, though out-of-bank flows are not included. Some scatter in the gaugings.	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10) and in September 2023 (WINFAP Files v12). Flows at end Sept 2023 missing due to dropout.	Steep headwaters drain Uldale Fells and flow westward. Lower reaches follow the E-W trend of the Coal Measures with Carboniferous Limestone to the south. Extensively overlain by Boulder Clay with alluvium within the main river valley. No catchment changes known.	Chapel House reservoir near the top of the catchment along with several groundwater abstractions and discharges of sewage and industrial effluent impact the flow regime somewhat however the impact is fairly small. Flashy runoff regime.
75018	Derwent at Seaton Mill	665.8	NY0189029447	301890.0	529447.0	54°39'01.9632"N 3°31'19.4438"W	54.65055	-3.52207	Derwent	Seaton Mill		EA-CL	753050	75	2011-02		VA				true	true	false	true	false	false	false	true	false	false	false	false	false		2011-02-17	2023-09-30	31.091	0.54	2018-07-22	2018-07-22	473.3	2015-12-05	2015-12-05	4.004	10.28	18.92	73.51	96.54	0.47	4609	4609	100.0	2011-02-17		205.788	9.2	77.3	215.1	552.8	945.4	1909	1805	0.1038	0.0455	0.7187	0.0896	0.0119	0.1396	0.0747	0.5578	0.1885	0.0109		0.085	0.821	0.094	0.0088	0.0605	0.4294	0.63	0.437	0.845	207.7	41.9	54.3	72.9	11.7	71.23	38.63	270	312	0.13	9.6	665.8	1.419	0.879	0.0756	0.0031			0.0042			2010		gdf;gmf;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Most downstream station on the Derwent, opened to replace Camerton (75002).	The station was built to replace Camerton which was destroyed in the flood Nov 2009. Station added to peak flows dataset in September 2019 (WINFAP Files v8).	Levels at the station are subject to surging during windy conditions which can impact levels by 20-30mm. Major floods such as November 2009 and December 2015 have significant bypassing flows on the right bank, which have been assessed by hydraulic modelling and comparison with upstream stations. A cableway is installed and all gaugings are done at the station. Control is Yearl Weir 300m downstream which incorporates two fish passes and a broad crested weir section. An offtake sluice is located close to the weir left bank which can be opened to aid fish passage with an effect on the rating at low flows. One peak flow rating valid across period of record.	Low flows are difficult to measure as velocities are very low.	The river Derwent starts at Styhead Tarn beneath Scafell Pike and runs north through the Borrowdale valley into Derwentwater then Bassenthwaite lake and eventually joins the sea at Workington. Once it leaves Bassenthwaite it is joined by some significant tributaries (Cocker and Marron). The catchment is predominantly rural but many of the rivers and streams have been artificially straightened and modified in the past.
76001	Haweswater Beck at Burnbanks	33.0	NY5075915929	350759.0	515929.0	54°32'10.4038"N 2°45'45.0496"W	54.53622	-2.76251	Haweswater Beck	Burnbanks	189.0	EA-CL	761103	76	1951-01-01		CC			22.9	true	true	true	true	false	false	false	true	false	false	false	false	false	SP	1953-10-01	2023-09-30	0.568	0.091	1984-10-23	1984-10-23	49.4	2009-11-19	2009-11-19	0.224	0.273	0.287	0.438	1.53	0.51	25567	21946	85.837	1977-12-01		16.67	219.7	245.5	457.0	680.9	827.4	2400	2438	0.0608		0.6904	0.1309	0.0042	0.041	0.0012	0.3644	0.4621	0.0057			1.0			0.2965	0.1063	0.71	0.345	0.645	293.6	54.31	70.2	97.1	13.2	10.49	6.1	463	68	0.22	222.0	32.34	0.253	0.877	0.0153	0.0001			0.0			1977..1978		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir gauging high relief, very wet catchment just downstream of Haweswater reservoir.	Compound Crump weir from April 1978, side weirs 6.7m wide, with central weir 6m wide, 0.26m lower Replaced compound thin plate, 4 stage weir, 1961-1978 (21.3m wide overall with lowest crest 3m wide; paired flanking crests 0.6m higher each 4.56 m wide, 1m higher (each 2.28m wide) and 1.25m higher (each 2.28 m wide) than the lowest. Previously velocity-area station 1951-1961.	Downstream recorder added August 2005, which suggests drowning reduces flows slightly above around 1m. Flow was measured just downstream at Thornthwaite weir in the past. Peak flow rating valid from April 1978 when compound Crump weir was installed. Flood Studies Report grade A1. One peak flow rating across period of record.	Peak flow data presented solely for the compound Crump weir from April 1978. Some monthly naturalised data available. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	High relief, very wet catchment draining Ordovician Borrowdale Volcanics with igneous intrusions. Extensively peat covered in the west with Boulder Clay and sands and gravels in the main valley. Entirely moorland, heathland and rough pasture. No catchment changes known.	500m downstream of Haweswater Reservoir which imports water from Lowther tributaries and Ullswater. In dry years reservoir absorbs all flood flows. Flow pattern reflects heavy abstraction and drawdown of Haweswater immediately upstream, often compensation releases only. Measures compensation and overspill only. Major exports to Shap aqueduct for public water supply.
76002	Eden at Warwick Bridge	1366.7	NY470567	347000.0	556700.0	54°54'07.9079"N 2°49'40.9329"W	54.9022	-2.82804	Eden	Warwick Bridge	17.5	EA-CL	762507	76	1966-01-01	1998-06-05	VA	410.0		8.0	true	true	true	true	false	false	false	false	false	false	false	false	false	SP	1959-11-13	1998-06-05	34.119	2.94	1989-07-25	1989-07-25	727.0	1968-04-01	1968-04-01	6.85	14.4	21.48	73.3	104.6	0.5	14085	14085	100.0	1959-11-13	1998-06-05	413.42	18.4	128.5	241.2	531.9	945.4	1326	1272	0.0648	0.0644	0.7804	0.0553	0.0154	0.0676	0.0579	0.6291	0.2205	0.0134	0.1415	0.6449	0.2137		0.0254	0.0808	0.5282	0.65	0.509	0.955	124.8	36.88	42.8	58.4	10.9	107.5	62.71	284	330	0.08	19.4	1374.85	0.969	0.919	0.0619	0.0028			0.005					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, replaced in 1996 by Great Corby (76017).	Velocity area station, opened November 1959, channel width 40m. Station replaced in December 1996 by Great Corby (76017). Closed June 1998.	Cableway for high flows. Bypassed on left bank floodplain above 3.8m. Seasonal weed growth very problematic in the later half of each calendar year (May - December). 0.01m discrepancy between actual and recorded stage during winter. One rating applied across period of record. Above bankfull rating limbs based on hydraulic modelling. The highest gaugings do not include floodplain flow.	Statistical analysis does not support merging of the flow records of 76002 with 76017.	Large catchment with mixed geology. Horseshoe shaped outcrop of Carboniferous Limestone forms south and east watersheds in Pennines; lakes drain Ordovician Borrowdale volcanics. Main Vale of Eden is Boulder Clay overlying Sherwood sandstone. Land-use variable; moorland to arable with little urbanisation. No known catchment changes.	Very responsive catchment, in spite of its comparatively large area. Catchment includes Ullswater, Haweswater Reservoir and Wet Sleddale Reservoir.
76003	Eamont at Udford	396.2	NY5756930450	357569.0	530450.0	54°40'02.3845"N 2°39'33.7757"W	54.66733	-2.65938	Eamont	Udford	90.9	EA-CL	762006	76	1960-01-01		VA	320.0			true	true	true	true	false	false	false	false	false	false	false	false	false	S	1961-10-01	2016-09-30	15.802	0.449	1984-08-25	1984-08-25	449.0	2015-12-05	2015-12-05	2.43	5.862	9.68	34.8	48.59	0.51	20089	19680	97.964	1961-04-20		200.3	92.5	150.0	287.9	580.0	945.4	1788	1768	0.0768	0.0322	0.7797	0.0556	0.0207	0.0773	0.0331	0.549	0.2851	0.021		0.3689	0.6311		0.0058	0.0904	0.44	0.66	0.453	0.86	187.9	42.6	54.6	75.3	11.8	41.89	26.3	333	46	0.2	93.5	406.99	1.022	0.798	0.0621	0.0051	0.601	0.467	0.0084	0.807	0.437	1960		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Flows influenced by Haweswater and Wet Sleddale Reservoirs. Ullswater has a significant effect on Eamont flows.	Velocity area station, opened April 1961.	Permanent cableway 120m upstream of recorder, historically wading downstream for low flows, but ADCPs used at cableway for all flows. All flows contained. Badly affected by weeds throughout the year, and significant bed erosion/deposition. Multiple low flow ratings. Two peak flow ratings in period of record, based on gaugings with modelled top end, the most recent valid from January 2005. Good fit to gaugings. Flood Studies Report grade A2. Site has not been gauged since December 2015 due to damage and rebuild, and flows have been turned off since this time.	No data after 6th December 2015 due to impacts of Storm Desmond. High flow data quality good; low flow quality dependent on weed growth (poor prior to Jan 2005). 1983 minimum may have been eclipsed in 1984 (data under review). Naturalised monthly flows 1962-1965. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Two-thirds of the catchment drains Ordovician Borrowdale Volcanics of peat moorland headwaters; broad band of Carboniferous L'st in middle reaches; Coal Measures and Permo-Triassic s'st nearer thestation. Extensive Boulder Clay in valleys and lower reaches. Land-use mostly grazing. No catchment changes known.	Flows are influenced by Haweswater and Wet Sleddale Reservoirs, which control 10% of the catchment and result in a gradual recession; response can nevertheless be quick. Haweswater impounded 1930s, level raised by 29m; Wet Sleddale impounded later 1940s. The catchment also contains Ullswater, which affects 37% of the area.
76004	Lowther at Eamont Bridge	158.5	NY5250728562	352507.0	528562.0	54°38'59.6794"N 2°44'15.1825"W	54.64991	-2.73755	Lowther	Eamont Bridge	113.3	EA-CL	761104	76	1962-01-01		VA	175.0		11.6	true	true	true	true	false	false	false	true	false	false	false	false	false	S	1962-10-01	2023-09-30	3.962	0.369	1984-07-23	1984-07-23	217.0	2015-12-05	2015-12-05	0.716	1.23	1.756	8.481	14.9	0.39	22280	22203	99.654	1962-07-27		118.366	113.5	199.4	323.4	568.7	827.4	1810	1828	0.0649	0.0141	0.8032	0.08	0.0091	0.0531	0.0091	0.5296	0.3697	0.0101		0.3119	0.6881			0.154	0.4259	0.69	0.405	0.901	153.2	45.63	57.4	79.9	12.3	30.52	19.03	360	48	0.26	113.5	156.1	0.838	0.831	0.0549	0.0011			0.0015			1961		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging rural catchment including Haweswater and Wet Sleddale reservoirs.	Velocity area station, opened 1962, channel approximately 15m wide, with open channel control (gravel bed). In-river sensor added July 2013 to monitor well performance.	Permanent cableway. Affected by seasonal weed growth. Spill onto right bank above around 2.1m. Site of gauging station was landscaped in 1988, resulting in a deepening of the channel. Original station building rebuilt July - October 1973; possible change in datum. Multiple peak flow ratings applied across period of record. Gauged inbank to above bankfull, with modelled rating including floodplain flow at the top end. Flood Studies report grade B.	Some gaps in the early flow record. Monthly naturalised flows from 1962-1965. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Majority of the catchment drains Ordovician Borrowdale Volcanics of the peat moorland headwaters. The centre of the catchment is dominated by a broad band of Carboniferous Limestone followed by Millstone Grit and Permian Sandstone close to the gauging station. Extensive Boulder Clay in the valleys and lower third of the catchment. Land-use mostly grazing. No catchment changes known.	Strongly influenced by Haweswater and Wet Sleddale reservoirs, which naturally control approx. 26% of the catchment, although the actual proportion may be much higher (approx. 60%) due to diversions from Lowther tributaries.
76005	Eden at Temple Sowerby	616.4	NY6045228316	360452.0	528316.0	54°38'54.1956"N 2°36'51.8278"W	54.64839	-2.6144	Eden	Temple Sowerby	92.4	EA-CL	760502	76	1964-01-01		VA	260.0		8.9	true	true	true	true	false	false	false	true	false	true	true	false	true	E	1964-11-01	2023-09-30	15.445	1.04	1996-09-23	1996-09-25	904.0	2015-12-05	2015-12-05	1.98	4.44	7.63	35.8	55.3	0.37	21518	21462	99.74	1964-05-01		295.4	93.5	145.4	250.0	498.9	796.6	1211	1142	0.0499	0.0541	0.8031	0.0615	0.0125	0.0467	0.0401	0.6853	0.2158	0.0119	0.0463	0.9179	0.0358		0.0041	0.079	0.6053	0.66	0.474	0.998	98.8	37.0	41.0	56.4	10.7	62.7	30.72	283	322	0.11	93.5	618.21	0.725	0.825	0.06	0.002			0.0039			1963..1975	1963-10-01..1975-12-31	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with rock bar then shallow V bed control, gauging a largely rural catchment.	Velocity area station opened in 1964 with a rock bar downstream acting as hydraulic control. Non-standard shallow V bed control constructed in 2002 to stabilise the gravel bed.	Severe summer weed growth has required numerous rating changes in the past, but has been controlled in recent years. Left bank raised after 1968 flood. Before May 1995, floods above 3.3m inundated wide floodplain on left bank. Both banks then raised to 4.2m to contain the previous highest flood, and station hut rebuilt on top of the new bank. Floods cause considerable scour and erosion. Two peak flow ratings applied across period of record, before and after the January 2005 event. Ratings derived from gaugings and hydraulic modelling to include bypassing.	Digitised flow data in the early record (pre-1975) is either missing or estimated, with significant editing to the stage record; chart data are retained, but peak flows rejected as consistency is uncertain. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Catchment is rural except for Appleby and Kirkby Stephen. Geology of Boulder Clay covering Permo-Triassic sandstone in main valley; supports arable farming. Headwaters drain Carboniferous Limestone with rough grazing. Moorland on highest ground. No large waterbodies. No catchment changes known.	Sewage discharge downstream of Appleby affects low flows.
76007	Eden at Sheepmount	2286.5	NY3900057103	339000.0	557103.0	54°54'17.6519"N 2°57'10.2977"W	54.9049	-2.95286	Eden	Sheepmount	9.9	EA-CL	765512	76	1967-01-01		VA	230.0		3.5	true	true	true	true	false	true	false	true	true	true	true	true	true	SP	1967-10-01	2023-09-30	54.715	5.468	1976-09-07	1976-09-07	1167.0	2015-12-06	2015-12-06	10.06	20.73	33.1	120.5	171.8	0.48	20454	20445	99.956	1967-02-03		639.356	8.0	85.5	210.4	488.1	945.4	1224	1182	0.0858	0.0853	0.7271	0.0647	0.0242	0.1003	0.0947	0.5894	0.1897	0.0181	0.1732	0.6516	0.1568	0.0183	0.0602	0.1045	0.5622	0.64	0.489	0.971	103.3	37.8	39.9	53.7	10.7	125.17	62.12	248	329	0.08	8.0	2276.0	1.071	0.826	0.0741	0.0056	0.655	0.442	0.0082	0.768	0.522	1968		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the furthest downstream on the River Eden.	Velocity area station opened 1967 in a deep, slack section. River approximately 35m wide at gauging section.	Permanent cableway. Full-range. Most floods contained in immediate channel, significant bypassing on left bank, more so before 1970, when floodbanks constructed. However, post-1970 major floods, such as Storm Desmond still have very significant bypassing and floodplain flow. Inlet may block at high flows - extended c2013. Gravel movement around downstream bridge and weed growth may affect low flows. Periodic recalibration. Multiple ratings consolidated pre-1993 to remove extrapolation of the effects of weed growth and gravel movement into the peak flow range. Two peak flow ratings therefore applied across period of record derived from current meter gaugings, the most recent is applied after storm Desmond.	A new rating from December 2015 (storm Desmond) onwards was implemented in January 2019. However, peak flows are thought to be underestimated by 5 - 15% and a further rating review is in progress. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Rural catchment except for Carlisle, Penrith and Appleby. Headwaters in Carboniferous Limestone of Pennines to east, impervious Lower Palaeozoics of Lake District massif to west; moorland. Extensive Boulder Clay covered Permo-Triassic sandstone in Vale of Eden. Land-use: arable and grazing. No significant catchment changes.	Mainly natural catchment, but contains some large settlements (Carlisle, Penrith) and reservoirs (Haweswater, Wet Sleddale). Reservoirs control 2% of catchment naturally, though actual proportion may be higher as Haweswater collects water from Lowther tributaries. Flows influenced by these, especially at low flows.
76008	Irthing at Greenholme	334.6	NY4861958073	348619.0	558073.0	54°54'52.9310"N 2°48'10.9362"W	54.9147	-2.80304	Irthing	Greenholme	18.4	EA-CL	763308	76	1967-01-01		MIS	180.0		15.0	true	true	true	true	false	false	false	true	false	false	false	false	false	SP	1967-11-01	2023-09-30	8.111	0.076	1975-05-31	1975-05-31	199.0	2015-12-05	2019-08-10	1.09	2.29	3.98	18.6	28.8	0.32	20423	20351	99.647	1967-08-15		154.499	18.7	75.0	218.7	403.0	621.4	1072	1073	0.1834	0.0699	0.5602	0.159	0.0244	0.2599	0.0495	0.4232	0.2589	0.0071	0.1352	0.8629		0.0019	0.1333	0.3224	0.4175	0.62	0.359	0.994	76.0	46.46	35.1	46.5	10.4	64.38	27.74	225	220	0.14	18.7	333.42	0.801	0.955	0.0671	0.0015			0.0027			1966		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with non-standard shallow V weir.	Velocity area station with non-standard shallow V weir (2m wide in the direction of flow) installed between February and August 1975. Originally (1967-1975), had a plastic pipe control that was effective over most of the flow range.	Permanent cableway. The present shallow V control is insensitive at low levels but retains control in reasonably high flows. Thought to be affected sometimes by high levels in the River Eden. Floodplain flow occurs at very high flows. One peak flow rating applied across period of record that accounts for bypassing. Upper limb of rating developed by hydraulic modelling. Flood Studies Report grade B.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Tributaries rising in the Pennines are short, steep and flashy through heather and moorland cover. Solid geology dominated by Carboniferous L'st - outcrops on steep slopes. Extensive hill peat, Boulder Clay, and glacial sands and gravels. Land-use is moorland to arable. Some urbanisation in villages and Brampton town. Afforestation began in the 1950s, peaked in the 1970s and, by 2000, constituted almost 20% of the catchment.	Medium-high flows can be affected by backing-up from the Eden. Moderately affected by Castle Carrock Reservoir and associated public water supply abstractions from the River Gelt, which controls <1% of the area.
76009	Caldew at Holm Hill	147.2	NY37824686	337820.0	546860.0	54°48'45.8045"N 2°58'08.5820"W	54.81272	-2.96905	Caldew	Holm Hill	59.7	EA-CL		76	1968-01-01	2000-04-09	VA	190.0		10.2	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1968-05-01	1999-01-18	4.534	0.301	1996-08-19	1996-08-19	96.39	1979-11-25	1979-11-25	0.743	1.644	2.649	10.12	14.46	0.49	11220	11057	98.547				61.9	143.7	280.9	569.0	925.8	1529	1401	0.0758	0.0318	0.8057	0.0815	0.0044	0.089	0.0948	0.603	0.2111	0.0019	0.0031	0.5064	0.3983	0.0922	0.0467	0.1044	0.5581	0.62	0.409	0.998	132.1	40.87	48.2	62.7	11.7	36.99	19.91	324	15	0.19	61.9	149.1	0.802	0.844	0.0593	0.0004			0.0006					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station closed 2000.	Natural channel with low flow gabion control, severely affected by gravel deposition.	Rating changes due to gabion suffering damage at high velocities. Full range of flows contained. Permanent cableway.		Natural catchment. Rises on impervious Skiddaw Slates and flows northward over Carboniferous Limestone and Coal Measures. Hill peat; Boulder Clay extensive below 200m. Rural catchment, heath and moorland in headwaters, arable farming confined to lower reaches.
76010	Petteril at Harraby Green	160.0	NY4118454500	341184.0	554500.0	54°52'54.3983"N 2°55'05.7801"W	54.88178	-2.91827	Petteril	Harraby Green	20.1	EA-CL	764009	76	1969-01-01	2014-01-14	MIS	38.1	10.4	25.1	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1970-01-01	2014-01-14	2.184	0.17	1995-08-22	1995-08-22	53.5	2005-01-08	2005-01-08	0.279	0.585	1.104	5.27	7.69	0.46	16085	16057	99.826	1969-12-10	2014-02-01	33.117	19.5	76.1	158.3	246.3	361.0	933	940	0.0884	0.2032	0.6521	0.0171	0.0375	0.0969	0.2431	0.6149	0.0213	0.0231	0.1109	0.8891			0.0505	0.0019	0.8299	0.64	0.59	0.993	51.5	30.52	32.4	43.0	10.2	48.14	27.5	161	28	0.22	19.7	157.58	0.699	0.974	0.0768	0.0051	0.562	0.279	0.0074	0.629	0.368			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with thin plate rectangular notch weir as control. Station closed 2014.	Opened December 1969. Velocity area station with thin plate rectangular notch weir as control, 10m wide (nearly full width of channel). Weir notch full at 0.7m. River Petteril joins the Eden 0.7 km downstream of station. Station closed in 2014, replaced by Newbiggin Bridge (76020).	Permanent cableway. The river bed is very silty and requires the stilling well to be flushed regularly. Some leakage beneath the weir which may affect low flows. The weir is good for medium and high flows, overtopping the right bank at 1.3m although there is not significant bypassing flow. Weed growth affects rating (severely in 1973 and 1974). One peak flow rating applied across period of record. Upper limbs of rating developed by hydraulic modelling.	Accuracy of December 2010 flows affected by freezing conditions.	Long, thin catchment rising in moorland W of Penrith, flowing north to Carlisle. Carboniferous Limestone in headwaters; the remainder is Millstone Grit and Penrith Sandstones covered with Boulder Clay and valley gravel. No significant catchment changes.	Natural catchment with no known artificial influences.
76011	Coal Burn at Coalburn	1.5	NY6936877778	369368.0	577778.0	55°05'36.5174"N 2°28'53.4064"W	55.09348	-2.4815	Coal Burn	Coalburn	275.3	EA-CL	763117	76	1967-01-01		CB				true	true	true	true	false	false	false	true	false	false	false	false	false	N	1967-01-01	2023-09-30	0.045	0.0	1967-04-18	2023-06-17	1.46	2011-01-15	2011-01-15	0.001	0.007	0.017	0.117	0.191	0.17	20727	20222	97.564	1967-01-01		1.827	274.1	291.9	304.9	323.9	332.3	1162	1096	0.3665	0.1091	0.1575	0.3025	0.0644	0.9443		0.0179	0.0377			1.0				0.9548	0.0452	0.62	0.196	1.0	47.2	58.93	39.2	52.4	10.6	2.21	1.3	305	160	0.46	274.1	1.63	0.702	0.865	0.0736	0.0			0.0			1973..1990		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound V notch and broad-crested weir in experimental catchment to study afforestation.	Opened in 1965 as a compound Crump profile weir, 18.5ft wide overall, central notch 2.5ft wide with flanking crests 1ft higher & 7ft wide. Structure was affected by deterioration leading to its replacement by a compound broad-crested weir (with V-notch for low flows) in 1991. Small experimental catchment (with boundary ditches) to show the effects of afforestation from planting to canopy closure. Experiments jointly managed by EA, CEH and the Forestry Commission. Central climate station and areal rainfall derived by CEH using a small network of within-catchment raingauges. Record exceeds 40 years in length; a time series of major strategic importance.	Weir does not drown at high flows. Two theoretical ratings (for Crump and broad-crested weirs) applied across relevant periods of record. Temporary rating prior to reopening in 1991 not held. Ratings checked against current meterings, but site has never been check-gauged at extreme flows. Difficulties in gauging at high flows, therefore a gauging platform was built 30m upstream where flow is confined and there is reasonable approach.	Recent gaugings suggest that peak flows may be underestimated by up to 10%, and that further investigation is required. Exceptional August 1975 flood (triggered by 70-80 mm rain; percentage runoff approached 70%) was fully contained. Three extended periods of missing data in the peak flow record; Oct 1972 to July 1973, Dec 1983 to July 1991 (station rebuild) and June to Aug 2019 (telemetry rebuild). Data affected by the station rebuild are rejected. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Undulating upland catchment on Carboniferous L'st with Boulder Clay and blanket peat cover. Usage was entirely moorland before being afforested.	Natural, very responsive regime with near zero flows common in the summer months and no abstractions or additions. Drained summer 1972 in preparation for planting, creating stream density of about 200 km/km2 (about 60 times greater than original stream network). Sitka spruce planted 1973. Runoff (especially low and moderate flows) calculated to have increased after drainage; baseflow index also increased.
76014	Eden at Kirkby Stephen	69.4	NY7729909694	377299.0	509694.0	54°28'55.4952"N 2°21'06.7659"W	54.48208	-2.35188	Eden	Kirkby Stephen	158.1	EA-CL	760101	76	1971-01-01		B VA	120.0	2.3	26.1	true	true	true	true	false	false	true	true	false	true	true	false	true	N	1971-10-01	2023-09-30	2.702	0.068	1976-08-26	1976-08-26	122.0	2015-12-05	2015-12-05	0.173	0.548	1.06	6.85	10.8	0.25	18993	18098	95.288	1971-11-01		89.115	158.7	220.4	377.0	601.9	708.8	1387	1492	0.0188	0.0237	0.8413	0.0937	0.0105	0.0134	0.0042	0.4722	0.4981	0.012		1.0				0.1369	0.4077	0.68	0.409	1.0	149.0	45.76	51.0	71.2	11.7	23.33	10.34	395	309	0.2	158.9	66.82	0.369	0.745	0.0296	0.0032			0.005					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad-crested weir, the highest gauging station on the River Eden. Gauges a high relief, natural catchment.	Non-standard compound broad-crested weir, built in 1971 to stabilise the bed and act as a low flow control. In 2007 extensive revetment works on left bank were carried out to prevent bank slippage into channel; weir repaired in 2008.	Gravel bed, good parallel approach. Crest corrosion a problem prior to addition of iron crest. Insensitive at low flows. Structure drowns and modest bypassing occurs at highest flows (some gauged evidence of its magnitude). Low flows gauged by wading; cableway measures higher flows. One peak flow rating applied across period of record. Rated by gaugings to 2.5m. Slight alterations and repairs to weir between 2nd May and 19th June 1989, with no significant change to rating.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	High relief catchment draining Carboniferous Limestone which forms most of the watershed. Middle reaches floored by Permian Sandstone. Hill peat and moorland, variable Boulder Clay cover. No catchment changes known.	Natural catchment with no known abstractions or returns.
76015	Eamont at Pooley Bridge	145.0	NY4723324963	347233.0	524963.0	54°37'01.3648"N 2°49'07.0566"W	54.61705	-2.81863	Eamont	Pooley Bridge	144.2	EA-CL	761605	76	1970-01-01		CC		46.9	11.8	true	true	true	true	false	false	false	true	false	false	false	false	false	SP	1970-07-01	2023-09-30	8.282	0.395	1976-09-07	1976-09-07	185.5	2015-12-05	2015-12-05	1.091	3.013	5.213	18.85	25.1	0.53	19450	19444	99.969	1970-07-01		59.677	142.4	158.4	367.6	662.2	945.4	2198	2149	0.0777	0.0081	0.789	0.0601	0.0029	0.0833	0.0071	0.4675	0.3734	0.0056		0.0577	0.9423			0.0854	0.2202	0.67	0.404	0.744	302.9	48.69	62.8	85.9	12.2	23.74	13.55	390	36	0.15	144.7	149.36	0.699	0.876	0.0383	0.0008			0.0006			1975		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir gauges outflows from Ullswater.	Compound Crump weir just downstream of Ullswater, constructed in 1970, although no records until 1976. Weir is 29.3m wide with all crests 9.1m wide, the centre being 0.55m lower.	Bed consists of stone and gravel. Some bypassing and drowning at the higher flows (see photos). Flows are measured in a section 200m upstream of a sewage works outlet, carried out by wading until recent ADCP gaugings. Two peak flow ratings applied across period of record derived from current meter gaugings and hydraulic model.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7). Ratings reviewed in 2022 and data reprocessed for full period of record.	Geology largely Borrowdale Volcanics with Skiddaw Slates further downstream. Some Boulder Clay cover. Sheep grazing on rough pasture predominates with some arable in lower reaches, moorland on high ground.	Gauge is just downstream of Ullswater and catchment includes several small tarns. Variable compensation releases. Ullswater occassionally used for public water supply, via pumped pipeline to Haweswater Reservoir. Temporary weir installed at the outlet of Ullswater to raise lake levels to facilitate abstraction under Drought Orders of 1989 and 1995/6.
76017	Eden at Great Corby	1373.0	NY4682555339	346825.0	555339.0	54°53'23.8161"N 2°49'49.8500"W	54.88995	-2.83051	Eden	Great Corby	19.0	EA-CL	762505	76	2004-05-30		CC	600.0			true	true	true	true	false	false	false	true	false	false	false	false	false		1996-12-11	2023-09-30	40.856	5.841	2003-09-17	2003-09-17	1119.0	2015-12-05	2015-12-05	8.343	16.34	24.58	91.07	126.3	0.48	9790	9790	100.0	1996-12-11		481.805	19.0	129.1	241.8	532.3	945.4	1327	1273	0.0644	0.0641	0.7809	0.0554	0.0153	0.0675	0.0571	0.6296	0.221	0.0134	0.1395	0.6463	0.2142		0.0237	0.081	0.5288	0.65	0.509	0.955	124.9	36.89	42.8	58.4	10.9	105.81	61.17	284	330	0.08	19.8	1371.7	0.962	0.921	0.0615	0.0028			0.0049			1996..2001	1997-04-17..2002-08-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard compound Crump weir gauging responsive catchment. Ullswater has a significant effect on Eamont flows.	Non-standard compound Crump weir. Was designed as a multifunctional station to also allow and count fish migration, and has 1:2 upstream slope, 1:7.3 downstream slope. Side sections approx 14.5m wide, central low flow section 1.458m wide with crest 0.5m below side weirs. Opened December 1996 to replace Warwick Bridge (76002).	Until 1999, surging was a serious problem at this site, especially when gauging high flows. Baffles fitted and surging was reduced. Two peak flow rating applied across period of record, the most recent following storm Desmond. Rating for low and medium flows derived from gaugings, high flows from hydraulic modelling.	December 2010 daily flows may have been affected by freezing conditions. Period of overlap with Warwick Bridge shows good correlation at high flows. Surge was noted in the well between April 1997 and July 2002 and data marked as rejected. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11). Statistical analysis does not support merging of the flow records of 76002 with 76017.	Large catchment with mixed geology. Horseshoe shaped outcrop of Carboniferous Limestone forms south and east watersheds in Pennines; lakes drain Ordovician Borrowdale volcanics. Main Vale of Eden is Boulder Clay overlying Sherwood sandstone. Land-use variable; moorland to arable with little urbanisation. No significant catchment changes.	Responsive catchment, with flows influenced by Ullswater and Haweswater and Wet Sleddale reservoirs, and abstractions.
76019	Roe Beck at Stockdalewath	62.99	NY3875845020	338758.0	545020.0	54°47'46.7030"N 2°57'14.6440"W	54.79631	-2.95407	Roe Beck	Stockdalewath		EA-CL	765850	76	1999-03		MIS				true	true	true	true	false	false	false	true	false	false	false	false	false		1999-03-17	2023-09-30	0.958	0.019	2005-08-07	2022-08-14	50.1	2015-12-05	2015-12-05	0.038	0.135	0.352	2.48	3.92	0.29	8964	8964	100.0	1999-03-17		42.495	73.1	121.2	166.2	245.4	354.8	1007	983	0.0717	0.1436	0.775	0.0039	0.0059	0.0773	0.2352	0.6795	0.0059	0.0021		0.9424		0.0576	0.0532		0.9321	0.63	0.429	1.0	40.0	38.24	34.5	44.3	10.4	17.67	8.96	174	4	0.4	73.2	63.09	0.654	0.995	0.0796	0.0006			0.0004			1998		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard timber weir gauging a rural, natural catchment.	A non-standard V weir constructed from timber in March 1999, 12m across, anchored to the sandstone bed.	The control is quite insensitive for lower flows and drowns at around 0.34m, but is good for medium to high flows. Pressure transducer used. High flows are controlled by the bridge downstream. Station hut floods in extreme events but still records. During the very highest flows there has been limited spill around the bridge. Rating developed from gaugings, with modelled top-end. Stable rating history.	Water year 1998/1999 rejected due to likely underestimation of true AMAX. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Rural catchment. Roe Beck drains upland hills in south west, joined by the flatter River Iver draining the south east. Bedrock is a mixture of mudstone, sandstone and limestone, with extensive cover of boulder clay. No catchment changes known.	Responsive catchment. No artificial influences known.
76020	Petteril at Newbiggin Bridge	145.82	NY4356151259	343561.0	551259.0	54°51'10.5495"N 2°52'50.1335"W	54.85293	-2.88059	Petteril	Newbiggin Bridge	38.4	EA-CL	764050	76	2006-10		VA				true	false	false	false	false	false	false	false	false	false	false	false	false		2007-03-05	2016-06-08	2.606	0.141	2011-07-31	2011-07-31	78.3	2015-12-05	2015-12-05	0.293	0.666	1.24	6.35	9.25	0.44	3384	3384	100.0				38.6	100.9	165.3	250.1	361.0	942	951	0.0916	0.2025	0.6566	0.0179	0.0297	0.1006	0.2389	0.623	0.0223	0.0144	0.0393	0.9607			0.0537	0.002	0.8171	0.64	0.598	0.993	52.8	29.81	32.7	43.5	10.2	42.64	23.87	169	33	0.22	38.6	145.84	0.671	1.012	0.0737	0.0014			0.003					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened in 2006 to replace 76010 (Harraby Green).	Velocity area station opened in 2006 to replace 76010 (Harraby Green) 5km downstream.	Control is a d/s single span bridge. Shallow water vertical ADP installed 2006, destroyed in December 2015 (Storm Desmond). Data derived from stage discharge rating rather than index velocity. Check gaugings done d/s of station, wading at low flows, ADP boat at high flows.		Long, thin catchment rising in moorland W of Penrith, flowing north to Carlisle. Carboniferous Limestone in headwaters; the remainder is Millstone Grit and Penrith Sandstones covered with Boulder Clay and valley gravel.	Natural catchment with no known artificial influences.
76021	Eden at Great Musgrave Bridge	223.1	NY7648613108	376486.0	513108.0	54°30'45.8117"N 2°21'52.9211"W	54.51273	-2.3647	Eden	Great Musgrave Bridge		EA-CL	760112	76	2000-08		FVVA		0.31		true	true	true	true	false	false	false	true	false	false	false	false	false		2000-08-03	2023-09-30	7.248	0.276	2001-07-04	2001-07-04	286.1	2015-12-05	2015-12-05	0.694	1.833	3.324	17.65	27.0	0.31	8459	8459	100.0	2000-08-03		180.155	141.9	178.7	336.3	535.1	727.4	1318	1270	0.0352	0.022	0.8135	0.1068	0.0095	0.0255	0.0078	0.5651	0.3922	0.0092		0.9851	0.0149		0.0094	0.1487	0.4493	0.66	0.443	0.997	117.8	42.36	45.1	62.5	11.0	29.71	13.54	352	304	0.15	141.9	223.03	0.548	0.68	0.0471	0.0018			0.004			1999		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with non-standard shallow V weir. Gauges a steep, natural catchment.	Velocity area station with non-standard shallow V weir, 30m across constructed July 2000.	Originally, an island 15m upstream of the weir caused slack water on the left bank, and then slowly encroached onto the weir; improvements have been made. The far bank suffers from vegetation which needs clearing to aid high flow gaugings. In spite of this, generally a good station, and gaugings by cableway extend to high flows with little scatter. Three peak flow ratings across period of record, good fit to gaugings across stage range.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Steep catchment, combined with local limestone gives a very rapidly rising stage. No known catchment changes.	No artificial influences known.
76022	Caldew at Cummersdale	244.0	NY3948952735	339489.0	552735.0	54°51'56.5775"N 2°56'39.5404"W	54.86572	-2.94432	Caldew	Cummersdale		EA-CL	765013	76	1997-09		MIS				true	true	true	true	false	false	false	true	false	false	false	false	false		1997-09-16	2023-09-30	6.612	0.506	2018-07-26	2018-07-26	223.0	2015-12-05	2015-12-05	0.914	2.09	3.492	15.33	22.0	0.43	9511	9511	100.0	1997-09-16		156.751	23.7	87.7	214.6	505.0	925.8	1299	1211	0.079	0.0849	0.7746	0.0507	0.0101	0.0892	0.1654	0.6113	0.13	0.0037	0.0874	0.5836	0.2392	0.0898	0.0493	0.0624	0.711	0.62	0.419	0.998	94.0	39.77	42.1	54.4	11.1	45.99	23.47	250	5	0.25	24.0	249.7	0.906	0.803	0.0781	0.0013			0.0017			1996		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Non-standard broad crested shallow V weir gauging a rural catchment. Steep catchment produces very responsive flow regime. Previously station number 76809.	Non-standard broad crested shallow V weir, 17m wide. Opened September 1997, replacing Holm Hill (76009) and Holm Head stations.	High flows measured in channel using a cableway. One peak flow rating applied across period of record with a modelled top-end. Upper limb developed by hydraulic modelling. Out of bank flow on right bank, and also some out of bank flow on left bank in extreme events.	Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	Rural catchment. Headwaters in Carboniferous Limestone of Pennines to east, impervious Lower Palaeozoics of Lake District Massif to west; moorland. Extensive boulder clay covered Permo-Triassic sandstone in Vale of Eden. Very steep catchment, producing responsive hydrograph. No significant catchment changes.	Very responsive catchment. No known artificial influences.
76023	Dacre Beck at Dacre Bridge	36.0	NY4600726287	346007.0	526287.0	54°37'43.7269"N 2°50'16.2746"W	54.62881	-2.83785	Dacre Beck	Dacre Bridge		EA-CL	761706	76	2000-08		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		2000-08-21	2023-09-30	1.175	0.017	2001-08-05	2010-06-27	41.7	2015-12-05	2015-12-05	0.061	0.25	0.5	3.01	4.493	0.29	8441	8441	100.0	1997-11-25		35.266	156.7	218.4	275.5	375.2	534.4	1526	1429	0.1133	0.0155	0.8593	0.009	0.0007	0.1434	0.0666	0.728	0.0566	0.0046		0.7437	0.2563				0.7824	0.64	0.457	0.999	101.3	36.35	46.2	64.3	10.9	12.91	7.55	287	59	0.2	157.8	33.91	0.796	0.971	0.0723	0.0005			0.0			1999		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened in 1999. Flashy regime in a small north-eastern Lake District catchment. Previously station number 76811.	Station opened in November 1997 as levels-only for flood warning purposes. Closed September 1998 and re-opened January 1999 using velocity area method for flow measurement.	Cableway present. Bridge downstream forms a control at high flows and prevents bypassing. Calibration difficult because of very turbulent velocity profiles. One peak flow rating applied across period of record. Rating based on gaugings at low and medium flows, with modelled top end.	Data are presented from August 2000 when continuous flow calculation began. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9).	An upland area in the north-east of the Lake District, receiving high annual rainfall. No significant catchment changes.	Flashy regime, with no known artificial influences.
77001	Esk at Netherby	841.7	NY39057177	339050.0	571770.0	55°02'12.0902"N 2°57'18.7349"W	55.03669	-2.9552	Esk	Netherby	14.3	EA-CL	770201	77	1963-01-01	2004-03-18	VA	620.0		7.3	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1963-10-01	2003-12-31	26.227	1.852	1984-07-25	1984-07-25	722.7	1967-10-09	1967-10-09	3.339	8.117	14.05	61.11	88.73	0.37	14702	13884	94.436	1961-08-24	2003-12-31	636.51	14.6	118.3	265.4	412.7	691.7	1448	1358	0.3112	0.0264	0.5425	0.1118	0.0063	0.4019	0.0327	0.4468	0.1146	0.0028	0.3576	0.073	0.5565	0.0102	0.0137	0.1813	0.4974	0.61	0.371	0.997	147.3	45.44	42.2	55.5	11.2	66.14	35.99	266	186	0.14	14.6	848.74	0.624	0.86	0.037	0.0006			0.0009			1960		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a predominantly rural catchment draining from Scotland into NW England.	Full-range velocity area station in a sandstone channel. Station closed March 2004.	Permanent cableway. Higher flows spilled onto a berm, with bankfull above this. Gauging from cableway could include flow above berm, but few high flow gaugings. Gravel extraction 1.3 km d/s caused drop in levels in 1973, so station rebuilt July-October 1973, with change in datum. New stilling well in 1974 as inlet pipes were dried during low flows. High flow gauging difficult because flashy catchment. Stepping stones placed in channel in January 1990 have since affected lower flows. Rating derived from gaugings. Scatter in low flow gaugings, with a number of ratings to cover these changes at low flows, but not valid at high flows. Rating 06 applied up to 1973 & rating 26 after to fit the few higher gaugings. Rating affected by regrading of natural control after high flows and gravel abstractions downstream. Flood Studies Report Grade A1.		Catchment comprises Silurian rocks with igneous intrusions in north, Carboniferous Limestone in centre, and Permo-Triassic succession in the south. Widely blanketed by Boulder Clay. Rural catchment, heavily forested in the north, arable in the south. Majority of catchment in Scotland (Canonbie upstream). No catchment changes known.	Black Esk Reservoir 47km upstream.
77002	Esk at Canonbie	495.0	NY3966875053	339668.0	575053.0	55°03'58.5522"N 2°56'46.4331"W	55.06626	-2.94623	Esk	Canonbie	22.4	SEPA-SW	133148	77	1962-01-01		VA	400.0		8.0	true	true	false	true	false	false	false	true	true	false	true	false	false	SP	1962-10-01	2023-09-30	17.952	0.574	2023-06-16	2023-06-16	385.5	2015-12-05	2015-12-05	2.162	5.733	9.915	42.22	60.27	0.38	22280	22280	100.0	1962-10-05		367.985	23.2	143.1	277.9	411.1	691.7	1507	1423	0.3583	0.0129	0.5213	0.1033	0.003	0.4294	0.0247	0.4314	0.1104	0.0029	0.1753	0.0141	0.8105	0.0	0.016	0.148	0.4841	0.61	0.405	0.994	165.6	44.23	44.6	58.6	11.6	61.11	33.54	279	183	0.14	23.2	495.4	0.568	0.924	0.035	0.0007			0.0011					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the River Esk.	Velocity area station located on straight reach with natural channel control. Cableway.	Historic station notes describes erosion possibly linked to gravel extraction down stream. There have been a number of datum changes through the station history. Well gauged up to QMED with confidence in the flows up to around 370 cumecs. Larger events are out of bank and can link up with the nearby Liddel Water during extreme events, also with the possibility of variable backwater effects as the confluence with the Liddel Water is 1.2Km downstream. Multiple peak flow ratings across the period of record.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Natural upland catchment area around Eskdalemuir. Mostly impermeable bedrock with approx. 2/3 superficial deposits. Upper Carboniferous Coal Measures in lower reaches, dominated by Upper Silurian shales, silts and mudstones. Landuse predominantly rough grazing with more than a third forestry. Minimal floodplains. No significant catchment changes known.	Storage or impounding reservoir, Black Esk Reservoir. Impounds about 1% of flows for export for public water supplies.
77003	Liddel Water at Rowanburnfoot	319.0	NY4145775935	341457.0	575935.0	55°04'27.8531"N 2°55'06.2557"W	55.0744	-2.9184	Liddel Water	Rowanburnfoot	27.1	SEPA-SW	133176	77	1973-01-01		VA	250.0		8.8	true	true	false	false	true	false	false	true	false	true	true	false	true	N	1973-10-01	2023-09-30	10.768	0.099	2023-06-16	2023-06-16	289.8	2015-12-05	2015-12-05	1.052	2.779	5.074	26.6	39.76	0.3	18262	18262	100.0	1973-10-03		296.218	27.8	129.0	253.2	422.3	615.4	1398	1291	0.2577	0.0373	0.5561	0.1354	0.0112	0.383	0.0303	0.4504	0.1333	0.0024	0.6588	0.1011	0.2217	0.0133		0.2513	0.4774	0.62	0.314	1.0	129.2	48.06	39.3	52.0	10.7	45.96	27.35	266	184	0.14	27.8	319.3	0.605	0.839	0.0333	0.0006			0.0006					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in Liddesdale, southern Scotland.	Velocity area station with cableway on straight gravel bedded reach.	Gravel shoal gives low flow control. A railway viaduct downstream will contribute to the control during higher events along with other factors. Floodplain inundation about 2km downstream occurs during extreme events where the Liddel joins the Esk and backing up effects may be a factor at Rowanburnfoot. Larger floods overtop right hand floodbank, bypassing is known to start between 3 and 3.5m - this is not gauged. Two peak flow ratings across period of record. The first rating is based on gaugings and extrapolated above (with low confidence in these flows). Second rating developed following bank repair work in 2011, based on fewer gaugings and again low confidence in extrapolated flows. There is limited confidence in flows above QMED. The suitability of the Peak Flow record has been temporarily downgraded from QMED to Neither, until the calibration for flood estimation is fully understood and revised.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Silurian shales, often with peat cover, form the hills; Lower Carboniferous series overlain by Boulder Clay in the valleys. Coal measures with some Silurian in headwaters. Landuse mainly dairy and hill farming with some forestry. Minimal floodplains. No significant catchment changes known.	Natural flow regime.
77004	Kirtle Water at Mossknowe	72.0	NY2850269268	328502.0	569268.0	55°00'46.1002"N 3°07'10.5117"W	55.01281	-3.11959	Kirtle Water	Mossknowe	20.8	SEPA-SW	133169	77	1979-01-01		VA	50.0		17.8	true	false	false	false	false	false	true	true	false	true	false	false	true	N	1979-07-01	2023-09-30	1.844	0.047	1984-08-24	1984-08-24	39.61	2021-10-28	2021-10-28	0.138	0.401	0.815	4.685	7.032	0.29	16163	16163	100.0				21.5	67.2	124.1	247.4	423.6	1225	1180	0.1358	0.074	0.7367	0.0322	0.0183	0.1892	0.1942	0.5394	0.0641	0.0117	0.4508	0.2694	0.2799		0.0585	0.0166	0.8777	0.6	0.324	0.988	71.3	42.74	39.3	50.4	11.4	25.08	14.3	142	189	0.28	21.7	69.93	0.559	0.777	0.0544	0.0024			0.0065	0.523	0.449			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station with historic high flow gaugings.	Velocity area station. Sited on straight reach above fall over rock bar acting as control.	Cableway present. Rating applied since 1/1/05 has been well gauged between 0.05 and 40 cumecs; historic high flow gaugings extend this to c.45 cumecs and indicate rating has remained stable over time.		Silurian shales of the upper catchment give way briefly to the Carboniferous series, then to Triassic s'sts in the lower catchment. Generally overlain by Boulder Clay. Landuse: mixed dairy and hill farming, with some forest.	Natural flow regime.
78001	Annan at St Mungos Manse	730.3	NY125755	312500.0	575500.0	55°03'58.4330"N 3°22'17.9692"W	55.06623	-3.37166	Annan	St Mungos Manse	34.0	SEPA-SW		78	1958-01-01	1961-12-31	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1958-10-01	1961-09-30	21.355	1.926	1959-09-09	1959-09-09	197.1	1960-02-03	1960-02-03	2.786	8.014	13.03	51.25	70.51	0.41	1096	1096	100.0				33.5	64.9	225.0	451.7	820.0	1493	1392	0.28	0.063	0.5424	0.0989	0.0116	0.3496	0.0974	0.4521	0.0897	0.0082	0.1925	0.0018	0.8056		0.0947	0.0201	0.5517	0.63	0.486	0.988	137.5	39.95	41.8	56.0	11.0	65.39	37.86	244	160	0.14	33.6	729.68	1.195	0.69	0.0827	0.0016			0.0027					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Penultimate station on the River Annan near Lockerbie.	River section 45m u/s of St Mungo's Manse near Lockerbie. Discontinued as a flow station in 1961.	Affected by weed growth primarily in the summer month.
78003	Annan at Brydekirk	925.0	NY1904770414	319047.0	570414.0	55°01'17.9436"N 3°16'03.8153"W	55.02165	-3.26773	Annan	Brydekirk	10.0	SEPA-SW	133146	78	1967-01-01		VA	420.0		7.3	true	true	true	true	false	false	false	true	false	true	true	false	true	N	1967-10-01	2023-09-30	31.097	1.345	1984-07-23	1984-07-23	414.8	2021-10-28	2021-10-28	3.797	10.26	18.54	73.71	101.1	0.43	20454	20454	100.0	1967-08-01		314.667	10.8	61.7	204.9	425.2	820.0	1446	1350	0.2462	0.0696	0.5877	0.0806	0.0119	0.3131	0.1146	0.4801	0.0812	0.0079	0.1937	0.0014	0.8048		0.0846	0.0177	0.6179	0.62	0.486	0.989	125.6	38.99	41.2	54.8	11.1	77.44	43.62	226	170	0.14	10.8	925.03	1.098	0.795	0.0769	0.0014			0.0025			1966		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Natural flow regime.	Velocity area station with cableway (span 190 feet) located on straight section below bend and with slightly curving channel below.	Gauged up to 3.7m (453cumecs, about 1.5 QMED); good performance at high flows. Ratings derived from current meter gaugings. Simple extrapolation of the rating curve.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Silurain shales in the north; Carboniferous series in the south. Centre of catchment is dominated by Triassic sandstone aquifer of the Lochmaben basin, with a smaller ribbon aquifer extending up the valley to Moffat. Rural catchment, some arable land use, mostly pasture and forestry. Motorway built during station record.	Natural flow regime.
78004	Kinnel Water at Redhall	76.1	NY0771886862	307718.0	586862.0	55°10'02.7516"N 3°27'00.7392"W	55.16743	-3.45021	Kinnel Water	Redhall	53.7	SEPA-SW	133175	78	1963-01-01		VA	170.0		31.2	true	true	false	true	false	false	true	true	false	true	false	false	true	N	1963-10-01	2023-09-30	2.936	0.028	2021-07-24	2021-07-24	75.39	2009-11-19	2009-11-19	0.148	0.648	1.289	7.524	11.47	0.27	21915	21550	98.334	1960-11-01		82.21	54.0	96.9	236.4	378.8	658.1	1551	1466	0.3006	0.0417	0.615	0.0306	0.0021	0.372	0.0524	0.4777	0.0965	0.0014	0.1114		0.8886		0.0645	0.0195	0.5548	0.62	0.431	0.999	98.7	43.96	43.4	58.0	11.2	28.15	15.98	243	109	0.31	54.0	76.17	0.769	0.695	0.0598	0.0001			0.0002					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with natural flow regime.	Velocity area station located in straight gravel-bedded reach.	Informal concrete low-flow control installed in 1966 - good hydraulic performance. D/s gravel had a short-term impact on modularity. Peak flow ratings derived from current meter gaugings. Highest known gauging 1.8m, 55cumecs (about 0.75 QMED). Simple extrapolation of rating to calculate high flows.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Silurian shales in upper catchment; Triassic sandstone aquifer in lower catchment. Land use: predominantly hill pasture with a third forestry. Minimal floodplains. No significant catchment changes known.	Natural catchment.
78005	Kinnel Water at Bridgemuir	229.0	NY0907084485	309070.0	584485.0	55°08'46.7833"N 3°25'41.6111"W	55.14633	-3.42823	Kinnel Water	Bridgemuir	44.9	SEPA-SW	133145	78	1979-01-01		VA	120.0		12.4	true	true	false	true	false	false	false	true	false	true	false	false	true	N	1978-12-31	2023-09-30	8.133	0.128	1995-09-22	1995-09-22	122.2	2009-11-19	2009-11-19	0.773	2.317	4.337	19.54	27.93	0.36	16345	16345	100.0	1979-01-01		124.078	47.0	74.8	242.5	400.2	693.9	1551	1397	0.3158	0.0451	0.5632	0.0682	0.004	0.4237	0.0878	0.4049	0.0799	0.0034	0.1992	0.0058	0.795		0.0539	0.0226	0.5767	0.62	0.434	0.996	110.7	43.79	41.9	55.8	11.2	35.68	21.35	241	129	0.26	47.0	229.28	0.987	0.623	0.0776	0.0002			0.0004					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with a natural flow regime.	Velocity area station with cableway on a small channel at a well confined section. Large bend u/s but straight at gauge. Steep bank on the right bank.	Natural channel control. Levels have gone above bankfull but not ever known to bypass station. Peak flow ratings derived from current meter gaugings.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Silurian shales in upper catchment; Triassic sandstone aquifer in lower catchment. Catchment supports hill pasture and forestry (drains Forest of AE). Minimal floodplains. No significant catchment changes known.	Natural catchment.
78006	Annan at Woodfoot	217.0	NT09990090	309990.0	600900.0	55°17'38.2351"N 3°25'08.5257"W	55.29395	-3.41903	Annan	Woodfoot	82.3	SEPA-SW	133182	78	1984-01-01		VA	120.0		9.9	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1983-12-01	2023-09-30	9.259	0.355	2021-07-26	2021-07-26	166.1	2009-11-19	2009-11-19	1.133	3.065	5.319	21.6	30.64	0.41	14549	14549	100.0				83.9	158.0	346.3	564.4	820.0	1627	1588	0.3627	0.0355	0.384	0.2038	0.0117	0.4115	0.0295	0.396	0.1543	0.0068	0.0773		0.9227		0.0485	0.0358	0.3565	0.72	0.441	0.995	206.1	43.42	45.6	63.2	11.0	26.37	13.58	352	179	0.12	83.9	218.03	0.527	0.657	0.0382	0.0016			0.0025					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station in the headwaters of the River Annan catchment.	Velocity area station with cableway (span 52m). Good approach, steep lb. Cableway spans immediate rb and subsidiary flood bank.			High relief upland catchment draining Silurian slates, shales and mudstones. Boulder Clay and alluvium overlay bedrock in the valleys with sands and gravels near the station.	Responsive, natural catchment.
79001	Afton Water at Afton Reservoir	8.5	NS631050	263100.0	605000.0	55°19'11.8592"N 4°09'32.3245"W	55.31996	-4.15898	Afton Water	Afton Reservoir	386.0	SEPA-SW		79	1965-01-01	1981-12-31	TP				true	false	false	false	false	false	false	false	false	false	false	false	false		1965-10-01	1981-09-30	0.202	0.002	1971-10-31	1971-12-01	7.846	1977-10-30	1977-10-30	0.008	0.018	0.023	0.58	1.235	0.11	5844	5113	87.491				389.5	425.1	506.5	590.3	678.5	2192	2165	0.1388	0.0011	0.2186	0.5877		0.0496		0.014	0.8861				1.0			0.6556	0.1694	0.71	0.366	0.781	177.2	46.19	59.5	83.1	13.4	4.96	2.81	507	336	0.17	389.5	8.37	0.29	0.927	0.0235	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station in the headwaters of the Nith catchment that measures compensation flows and spillages from Afton Reservoir.	Compound sharp-edged weir below Afton Reservoir (major water supply abstraction) - measures compensation flows and spillage.
79002	Nith at Friars Carse	799.0	NX9234685121	292346.0	585121.0	55°08'55.2654"N 3°41'26.6920"W	55.14868	-3.69075	Nith	Friars Carse	19.8	SEPA-SW	133156	79	1957-01-01		VA	590.0		7.6	true	true	false	true	false	true	true	true	true	true	true	true	true	SPN	1957-10-01	2023-09-30	28.418	1.154	1984-08-27	1984-08-27	447.4	1962-01-15	1962-01-15	3.065	8.66	15.69	69.77	97.69	0.39	24106	24106	100.0	1957-08-01		450.731	20.6	125.2	288.9	470.4	722.7	1547	1461	0.1388	0.0434	0.6765	0.1248	0.01	0.1667	0.0485	0.5331	0.2452	0.0042	0.0562	0.2168	0.727		0.0794	0.11	0.4214	0.67	0.433	0.991	157.8	42.18	45.2	61.9	10.8	79.51	40.6	294	85	0.04	20.6	797.71	0.838	0.856	0.05	0.0013			0.0023			1956		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the River Nith.	Velocity area station.	Cableway present. Straight approach with sharp bend (with gravel bar) 150m below station which probably controls higher flows. Shallow section with gravel bed. Narrow floodplain on left bank, more extensive on right. Ratings derived from current meter gaugings. Highest known gauging 4.2m (about 1.1 QMED). High flows calculated by simple extrapolation. Ratings are well gauged from 2 to 200 cumecs. Historic high flow gaugings to almost 500 cumecs provide a good fit to rating. High flow events e.g. November 2009 thought to have remodelled low flow control; new ratings produced as a result.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Silurian shales and mudstones. Coal measures at the top of the catchment. Patches of granite. Land use: hill pasture with mixed farming in the valley bottom. Minimal floodplains. No significant catchment changes known.	Afton Res. has a minor influence on the flow regime. Public water supplies in catchment - limited influence.
79003	Nith at Hall Bridge	155.0	NS68411297	268410.0	612970.0	55°23'34.7243"N 4°04'44.7944"W	55.39298	-4.07911	Nith	Hall Bridge	173.0	SEPA-SW	133160	79	1959-01-01		VA	100.0		33.2	true	true	false	true	false	false	false	true	false	false	false	false	false	SP	1959-10-01	2023-09-30	5.856	0.116	1995-08-23	1995-08-23	138.2	1994-12-11	1994-12-11	0.382	1.259	2.575	15.99	22.58	0.28	23376	23376	100.0	1959-10-01		70.626	171.3	205.5	308.7	492.2	698.3	1568	1512	0.1834	0.0001	0.5652	0.227	0.0083	0.2025	0.0073	0.3653	0.4124	0.0075	0.1595	0.3083	0.5322		0.0197	0.2055	0.5639	0.63	0.358	0.972	121.6	45.45	45.0	62.8	10.6	28.76	15.84	330	355	0.16	171.3	153.02	0.906	0.783	0.0674	0.0017			0.0029					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Largely natural with controlled storage of Afton Res. having occasional significant effect.	Velocity area station. Straight and uniform approach.	All flows contained by bridge opening below station which is likely high flow control. Low flows controlled by riffles near bridge. Unable to gain access to the station during highest events to be able to gauge. Three peak flow ratings across period of record derived from gaugings with extrapolation above.	Treat Dec 2013 peak with caution. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Silurain shales and Coal Measures overlain by, predominantly, Boulder Clay with Peat in the headwaters. Patches of volcanic rocks. Upland catchment supporting pasture and rough grazing; some forest cover. U-shaped valley, notable floodplains. No significant catchment changes known.	Largely natural with controlled storage of Afton Res. having occasional significant effect. Public water supply only affects low flows.
79004	Scar Water at Capenoch	142.0	NX8452694078	284526.0	594078.0	55°13'38.5231"N 3°49'01.3612"W	55.22737	-3.81704	Scar Water	Capenoch	48.5	SEPA-SW	133149	79	1963-01-01		VA	187.0		16.9	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1963-10-01	2023-09-30	5.838	0.056	2023-06-17	2023-06-17	111.2	2009-11-19	2009-11-19	0.345	1.44	2.84	14.65	21.42	0.3	21915	21915	100.0	1963-09-01		147.502	49.4	162.4	319.7	461.7	597.2	1730	1627	0.1596	0.0111	0.7487	0.0749	0.0035	0.1736	0.0257	0.5267	0.2734	0.0003			1.0		0.0117	0.1179	0.3319	0.66	0.446	0.999	196.0	41.97	47.2	64.8	11.6	27.23	13.63	319	106	0.16	49.4	142.68	0.499	0.883	0.0319	0.0001			0.0006			1962..1980	1963-09-19..1981-09-30	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with a natural flow regime.	Velocity area station with cableway, channel approximately 15m wide. Prior to 1981 an open channel station. Fairly straight gravel bedded reach.	Well confined reach for all but extreme flows. Control of pre-cast concrete sections installed during winter of 1986/87 replacing earlier 1981 gabion control. Rating applied since 17/01/2003 is based on gaugings between 0.1 and 35 cumecs; historical gaugings provide confidence in rating up to 130 cumecs. From current meter gaugings - highest gauging at 2.6m (0.9 QMED). The changes to the control in 1986/87 are unlikely to have significantly affected the high flow performance. However, the peak flow estimates pre-01/10/1981 have been temporary excluded as the rating applied does not represent the channel state before the gabion weir was built on 10/08/1981.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Natural upland catchment. Silurian shales and mudstones with some overlain by superficial deposits, mainly Boulder Clay. Land use: predominantly pasture with some wood cover in the headwaters (conifer plantation with contour ploughing). Minimal floodplains.	Natural regime.
79005	Cluden Water at Fiddlers Ford	238.0	NX9286079521	292860.0	579521.0	55°05'54.5880"N 3°40'50.0596"W	55.0985	-3.68057	Cluden Water	Fiddlers Ford	22.9	SEPA-SW	133155	79	1963-01-01		VA	82.0		13.8	true	true	true	true	false	false	false	true	false	false	true	false	false	SP	1963-10-01	2023-09-30	8.402	0.169	1977-08-18	1977-08-18	147.7	2009-11-19	2009-11-19	0.595	2.315	4.5	20.52	29.39	0.37	21915	21915	100.0	1963-10-01		108.469	22.2	90.2	211.6	343.5	596.2	1464	1422	0.2122	0.0261	0.6832	0.0665	0.009	0.2532	0.1012	0.4842	0.1569	0.002	0.0337		0.9663		0.1482	0.0012	0.4434	0.64	0.497	0.985	129.8	37.26	45.1	59.1	11.4	43.72	23.35	216	111	0.13	22.3	237.22	0.87	0.836	0.0622	0.0004			0.0012					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Some abstraction for public water supply.	Velocity area station with cableway (47m in length) under natural channel control. Straight reach with gravel bed.	Rating derived from current meter gaugings. Highest known gauging 2.4m, 121 cumecs (about 1.1 QMED). No problems at high flows. High stability.	Increase in flow during dry period in May 2017 due to possible influences from works at Glenkiln reservoir or U/s fish farm releasing impounded water.	Silurian shales and mudstones in upper catchment; Permian basal breccias, sandstones and mudstones in lower catchment. More than 50% of catchment overlain by superficial deposits; predominantly Boulder Clay with some sands and gravels. Landuse mainly pasture giving way to rough grazing on higher ground with some forestry. No significant catchment changes known.	Contains Glenkin Res. 1-2% of flows abstracted for public water supply.
79006	Nith at Drumlanrig	471.0	NX8577699307	285776.0	599307.0	55°16'28.6393"N 3°47'58.2876"W	55.27462	-3.79952	Nith	Drumlanrig	52.2	SEPA-SW	133154	79	1967-01-01		VA	300.0		6.0	true	true	true	true	false	false	false	true	false	true	false	false	true	SPN	1967-06-01	2023-09-30	17.423	0.606	1984-08-26	1984-08-26	342.1	1994-12-11	1994-12-11	1.524	4.645	8.68	44.5	63.37	0.34	20576	20576	100.0	1967-05-01		361.019	54.5	187.3	320.4	486.6	722.7	1580	1485	0.1222	0.0256	0.6821	0.1543	0.0083	0.1517	0.0117	0.5302	0.2998	0.0046	0.052	0.2577	0.6903		0.035	0.149	0.453	0.68	0.386	0.99	154.0	44.47	46.3	63.6	10.8	58.83	32.06	328	33	0.07	54.5	469.04	0.617	1.051	0.0408	0.0015			0.0023			1966		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the River Nith.	Velocity area station on long straight reach at a particularly well confined site. Cableway. Gravel and rock bed.	Natural channel control. Ratings derived from current meter gaugings. Highest known gauging 3.3m (353 cumecs; about QMED). Sensibly natural flow regime. Extrapolation for high flows believed to be reliable. Some shifting at low flows.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Mostly upland catchment. Silurian shales and mudstones; approx. 2/3 overlain by superficial deposits, predominately Boulder Clay with peat in the headwaters and Triassic sandstones around gauging station. Mixed farming and pasture in valley bottom; rough grazing, moorland and forestry in upland areas. No significant catchment changes known.	Storage at Afton reservoir and public water supply have small influence on high flows.
79007	Lochar Water at Kirkblain Bridge	125.0	NY0265669512	302656.0	569512.0	55°00'38.1887"N 3°31'25.3180"W	55.01061	-3.5237	Lochar Water	Kirkblain Bridge	8.0	SEPA-SW	133162	79	1991-10-01	2009-01-01	VA	20.0			true	false	false	false	false	false	false	false	false	false	false	false	false	N	1992-01-01	2008-12-31	2.357	0.167	1995-09-22	1995-09-22	19.23	1992-12-02	1992-12-02	0.355	0.889	1.474	5.648	7.683	0.55	6210	6208	99.968				4.4	11.8	42.1	160.6	265.0	1108	1067	0.1437	0.1555	0.6143	0.0406	0.0403	0.167	0.2668	0.4787	0.054	0.0323	0.4045		0.5955		0.3084	0.1942	0.4088	0.6	0.51	0.986	49.5	36.47	36.7	46.5	10.6	25.75	11.55	66	209	0.31	4.4	118.43	1.458	0.756	0.1942	0.0062	0.651	1.032	0.0126	0.831	1.041			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station with natural channel control, closed in January 2009.	Velocity area station on a short, straight reach below sharp bend and road bridge. Station closed January 2009.	Natural channel control. Flood flows contained by bridge used for gauging. Summer flows badly affected by weed growth.	Treat 1997 flows with extreme caution.	Natural low lying catchment draining Lochar Moss, overlying Permian s'st aquifer. Headwaters drain Silurian shales. More than 90% of catchment overlain by mixed superficial deposits. Land use mixed farming and pasture with some forestry.	River management scheme and tides affect flow regime (river dredged to beyond tidal limit).
80001	Urr at Dalbeattie	199.0	NX8213261018	282132.0	561018.0	54°55'47.5593"N 3°50'27.4907"W	54.92988	-3.84097	Urr	Dalbeattie	10.3	SEPA-SW	133151	80	1963-01-01		VA	95.0		9.6	true	true	false	true	false	false	false	true	false	true	true	false	true	N	1963-11-01	2023-09-30	6.081	0.045	1995-08-20	1995-08-21	121.2	2022-12-30	2022-12-30	0.316	1.521	3.14	15.2	21.44	0.36	21884	21884	100.0	1963-11-01		88.148	3.4	61.4	156.6	245.6	423.3	1352	1341	0.2094	0.0492	0.688	0.0352	0.0114	0.2138	0.0647	0.5749	0.1373	0.0021			1.0		0.0411	0.0267	0.5481	0.64	0.376	0.963	79.6	48.39	44.2	57.3	11.5	37.67	20.25	155	170	0.13	3.4	197.06	0.822	0.915	0.0714	0.0004			0.0016					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a natural catchment.	Velocity area station with cableway (span 35m) located between two sharp bends.	Gravel and rock bar forms low flow control, channel control at high flows. Highest gauging at 3.1m (120 cumecs; ~1.3 QMED). Extrapolation of ratings is thought to be fair. Multiple peak flow ratings across period of record.	Station liable to tidal backwater, occasional tidal peaks recorded. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10) and in August 2024 (WINFAP Files v13).	Low-lying catchment. Silurian shales and greywackes with granite intrusion in Dalbeattie area. Extensively covered by Boulder Clay. Land use: pasture, hill grazing and forestry. Minimal floodplains. No significant catchment changes known.	Natural catchment.
80002	Dee at Glenlochar	809.0	NX7336064115	273360.0	564115.0	54°57'19.9494"N 3°58'44.9166"W	54.95554	-3.97914	Dee	Glenlochar	42.6	SEPA-SW	133157	80	1977-01-01		VA	400.0		10.8	true	false	false	false	false	false	false	true	false	false	true	false	false	H	1977-11-01	2023-09-30	41.648	1.379	1978-05-16	1978-05-16	423.2	2015-12-30	2015-12-30	4.158	11.98	28.25	100.8	125.6	0.39	16770	16770	100.0				42.3	90.6	237.2	459.3	813.3	1708	1755	0.374	0.0062	0.5155	0.078	0.005	0.3902	0.0089	0.3781	0.1988	0.0019			1.0		0.0067	0.094	0.3506	0.65	0.367	0.813	124.1	49.86	53.7	73.9	12.1	69.2	34.61	258	167	0.09	42.3	810.38	0.897	0.866	0.0596	0.0001			0.0007					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Lowest station on the highly regulated River Dee.	Velocity area station on gentle bend about 500m d/s of Glenlochar Barrage. Gravel bed with some large boulders. Lowest station on highly regulated river.	Cableway present. All flows contained at section.		Ordovician and Silurian shales and greywackes, with two major granitic intrusions. Glacial drift deposits on lower ground. Scenic catchment with rugged peaks and extensive afforestation giving way to rolling lowland pastures.	Distribution of flows controlled by Glenlochar Barrage feeding Glenlec HEP station.
80003	White Laggan Burn at Loch Dee	5.7	NX46797812	246790.0	578120.0	55°04'25.7659"N 4°24'04.3138"W	55.07382	-4.4012	White Laggan Burn	Loch Dee	226.0	SEPA-SW	133180	80	1980-01-01		VA	5.0		44.4	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1980-03-01	2023-09-30	0.426	0.002	2021-07-26	2021-07-26	6.301	1980-09-26	1980-09-26	0.018	0.08	0.174	1.211	1.73	0.17	15919	15919	100.0	1980-02-01		6.53	225.9	287.4	455.7	562.4	657.6	2141	2468	0.1043		0.6701	0.2256		0.1698		0.533	0.2962				1.0			0.0009	0.1438	0.69	0.385	0.996	246.0	49.12	71.9	99.9	14.3	4.39	2.19	440	2	0.36	227.5	5.74	0.248	0.589	0.0179	0.0			0.0			1980		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station upstream of Loch Dee.	Velocity area station. Gauge on long straight section with gravel bed and low grassy banks.	Informal wooden asymmetrical Flat V weir controls most flows. Occasional backwater effects from Loch Dee after prolonged wet periods. Bypassing may occur above 1.2m through forest drainage channels. Peak flow rating derived from current meter gaugings. Highest known gauging 1.3m, 6.7 cumecs (0.9 QMED). No cableway at station - not possible to gauge high flows. One peak flow rating across period of record.	Icing affects data in Jan, Nov, Dec 2010.	Very wet rugged upland catchment. Lower catchment Loch Doon Granite; mid catchment metamorphosed country rocks giving way to unaltered Ordovician and Silurian shales and greywackes to the S. Land use is mainly grassland and forestry. Minimal floodplains. No significant catchment changes known.	Natural catchment.
80004	Green Burn at Loch Dee	2.6	NX4805779086	248057.0	579086.0	55°04'58.3910"N 4°22'54.7990"W	55.08289	-4.38189	Green Burn	Loch Dee	228.0	SEPA-SW	133158	80	1983-01-01		VA	3.0		18.7	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1983-10-01	2023-09-30	0.194	0.0	2009-02-25	2009-02-25	2.711	1994-12-11	1994-12-11	0.007	0.033	0.069	0.581	0.847	0.16	14610	14610	100.0				229.8	259.7	365.2	503.7	550.6	2209	2382	0.3561		0.5126	0.1313		0.6178		0.3276	0.0527	0.0018			1.0			0.132		0.69	0.364	0.998	189.4	49.54	73.9	104.6	14.1	3.02	1.46	373	327	0.61	229.8	2.64	0.237	0.525	0.018	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station u/s of Loch Dee.	Velocity area station with an informal timber control.	Uncertainty in high flows due to considerable degree of scatter in rating about c0.5 cumecs, caused by changes in channel form and control. Multiple peak flow ratings across period of record.	Icing of control and stilling well evident in Jan, Nov, Dec 2010.	Very wet, moderate relief, moorland catchment. Impermeable bedrock (large granitic component) with some peat on lower slopes. Extensive young coniferous plantations.	Natural flow regime.
80005	Dargall Lane at Loch Dee	2.1	NX4506978706	245069.0	578706.0	55°04'42.7825"N 4°25'42.4041"W	55.07855	-4.42845	Dargall Lane	Loch Dee	259.0	SEPA-SW	133153	80	1983-01-01		VA	4.0		30.6	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1983-07-01	2023-09-30	0.176	0.003	1984-05-28	1984-08-27	3.965	1984-01-30	1984-01-30	0.014	0.048	0.088	0.443	0.678	0.25	14702	13972	95.035				258.7	349.6	456.9	619.6	714.4	2171	2435			0.534	0.466				0.7334	0.2666				1.0				0.1895	0.69	0.355	1.0	307.5	54.92	74.3	100.9	15.0	2.61	1.64	474	0	0.54	258.7	2.07	0.278	0.827	0.023	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station u/s of Loch Dee.	Velocity area station on a natural river section.	Boulder control. Reasonable approach, gauged by wading.	Freezing of stilling well is evident in hydrograph for Jan, Nov, Dec 2010 (when the burn itself was noted to be frozen).	Very wet catchment. High relief moorland catchment. Impermeable bedrock (large granitic component) with some Boulder Clay cover on lower slopes.	Natural flow regime (note: true rainfall may be underestimated).
80006	Blackwater at Loch Dee	15.6	NX4781179675	247811.0	579675.0	55°05'17.1570"N 4°23'09.7935"W	55.0881	-4.38605	Blackwater	Loch Dee	229.0	SEPA-SW	133163	80	1982-01-01		VA				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1983-01-01	2023-09-30	1.201	0.011	2018-07-19	2018-07-19	10.27	2008-10-10	2008-10-10	0.114	0.481	0.879	2.661	3.335	0.45	14883	14741	99.046				224.5	230.4	373.6	544.3	714.4	2180	2375	0.1641		0.5402	0.2321		0.2357	0.0017	0.4896	0.2074	0.0031			1.0			0.1252	0.102	0.69	0.364	0.743	219.7	50.08	73.8	103.2	14.2	6.49	3.25	382	9	0.31	227.1	15.72	0.455	0.688	0.0306	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the outflow from Loch Dee.	Velocity area station on the outflow from Loch Dee.	Gravel bed, natural channel control. Flood flows overbank from approx 1.0m stage / 2.5 cumecs although the current rating puts this at 1.181m / c3.5 cumecs. Confidence in the rating is backed by gaugings up to c2.5 cumecs, diminishes beyond this point, and is unreliable above 5.5 cumecs.	Flows from Mar 2002 reprocessed in 2012.	Rugged moorland upland catchment on granite and Silurian shales. Boulder Clay and shallow peat on lower slopes. Some forestry.
81001	Penwhirn Burn at Penwhirn Reservoir	18.2	NX128694	212800.0	569400.0	54°59'02.0918"N 4°55'37.7347"W	54.98391	-4.92715	Penwhirn Burn	Penwhirn Reservoir	151.0	DGRW		81	1965-01-01	1968-12-31	TP		113.0		true	false	false	false	false	false	false	false	false	false	false	false	false	S	1965-10-01	1968-09-30	0.51	0.028	1966-04-05	1966-04-05	5.791	1965-12-05	1965-12-05	0.074	0.108	0.133	1.464	2.192	0.23	1096	1065	97.172				154.1	172.7	205.4	246.1	392.6	1478	1557	0.3928	0.002	0.0617	0.5094		0.4584		0.1719	0.3268	0.0085			1.0			0.979		0.57	0.243	0.978	56.3	58.71	44.5	58.4	11.4	9.65	4.67	209	135	0.26	157.5	18.13	0.575	0.901	0.0523	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound V notch and rectangular weir below Penwhirn Reservoir measuring compensation flows and spillage.	Station measures compensation flows and spillage from Penwhirn Reservoir.	Compound V notch and rectangular weir below Penwhirn Reservoir.
81002	Cree at Newton Stewart	368.0	NX4126665330	241266.0	565330.0	54°57'26.1481"N 4°28'49.8932"W	54.95726	-4.48053	Cree	Newton Stewart	4.8	SEPA-SW	133171	81	1963-01-01		VA	330.0		7.6	true	true	true	true	false	true	true	true	true	true	true	true	true	N	1963-10-01	2023-09-30	15.895	0.083	2021-07-27	2021-07-27	248.1	1991-12-21	1991-12-21	1.029	4.101	8.327	39.6	56.48	0.28	21915	20089	91.668	1963-10-01		208.969	5.2	65.9	212.6	456.9	843.0	1713	1757	0.4909	0.0033	0.3973	0.0905	0.0076	0.5556	0.0037	0.2377	0.1901	0.0037			1.0		0.0181	0.1424	0.3806	0.69	0.341	0.932	118.7	50.86	50.2	65.9	11.9	45.88	23.78	238	204	0.23	5.2	366.21	0.972	0.91	0.0697	0.0008			0.0017					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, lowest on the River Cree.	Velocity area station with cableway located on long, reasonably straight, gravel bedded reach.	Channel with gravel control 50m downstream pre-1997. Rating changed around 1997 coincided with the time of building of boulder groynes 75m downstream. A footbridge was also built in the same location in 1998 and the vertical concrete supports creates a constriction that will be a significant control factor at higher flows. Bridge was removed in November 2016 after being damaged in the 2015 flood but the bridge supports remain in place and continue to act as a control during floods.The bridge is to be reinstalled at a higher level. Multiple peak flow ratings across the period of record. Advised extrapolation is 10% above the highest gauged flow in each rating period. The post-1997 rating is based on gaugings up to 3.45m (280.98 cumecs rated flow). This gauging was above bank full (3.3m), but the out of bank flow component was insignificant. AMAX1 reached 4.1m and the out of bank flow component may have been more significant.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Natural catchment with a few small lochs, moorland and forestry. Impermeable bedrock with approx. half overlain by superficial deposits. Silurian shales for much of the catchment. Minimal floodplains. No significant catchment changes known.	Natural catchment.
81003	Luce at Airyhemming	171.0	NX1801759917	218017.0	559917.0	54°54'02.6513"N 4°50'22.9890"W	54.90074	-4.83972	Luce	Airyhemming	19.0	SEPA-SW	133141	81	1967-01-01		VA	64.0		15.4	true	true	true	true	false	false	false	true	false	false	false	false	false	SPN	1967-01-01	2023-09-30	6.251	0.005	2008-06-16	2008-06-16	120.3	1981-10-02	1981-10-02	0.305	1.133	2.571	16.95	24.87	0.22	20727	20727	100.0	1966-12-01		134.2	19.5	101.4	181.0	259.5	438.2	1419	1504	0.158	0.0066	0.3378	0.4901	0.0038	0.1689	0.0036	0.414	0.4084	0.0013			1.0			0.7288	0.143	0.58	0.296	0.977	71.7	54.88	43.5	56.9	11.5	32.54	16.04	182	165	0.18	19.5	170.7	0.752	0.968	0.0584	0.0			0.0002					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, lowest on the River Luce.	Velocity area station with cableway, on long straight and uniform reach with wooded banks.	Natural channel control. Bypassing thought to begin on the left bank at 2.8m but not thought to be very significant. Peak flow rating derived from current meter gaugings. Highest known gauging 2.8m, 188 cumecs (about 1.2 QMED). Extrapolation of rating above this.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Predominantly lowland catchment. Bedrock Silurian shales and greywackes with extensive peat cover. Natural moorland catchment draining westerly end of Southern Uplands. Landuse mainly hill grazing and forest cover. Increases in forestry. Minimal floodplains.	Penwhirn Reservoir abstractions constitute approx. 2% of flows.
81004	Bladnoch at Low Malzie	334.0	NX3821254496	238212.0	554496.0	54°51'32.4671"N 4°31'19.4807"W	54.85902	-4.52208	Bladnoch	Low Malzie	11.3	SEPA-SW	133167	81	1977-01-01		VA	70.0		21.5	true	false	false	false	false	false	true	true	true	true	true	false	true	N	1977-12-01	2023-09-30	10.088	0.043	1995-08-23	1995-08-24	128.8	2000-10-25	2000-10-25	0.482	2.532	5.394	25.75	35.55	0.34	16740	16740	100.0				11.9	50.1	94.1	173.4	317.6	1322	1346	0.372	0.0105	0.437	0.1605	0.0082	0.4399	0.0088	0.2865	0.2507	0.0013			1.0		0.0148	0.5027	0.1049	0.62	0.291	0.946	44.6	53.24	40.3	50.8	11.5	47.14	23.45	105	122	0.18	11.9	329.07	1.319	0.907	0.1278	0.0002			0.0002					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station on a straight reach of the meandering River Bladnoch.	Velocity area station on straight reach in a meandering section of river situated in pastures.	Long cableway ensures flows over berms gauged. Weedy islands below gauge. Natural control.		Lowland catchment. Impermeable bedrock (Silurian shales and greywackes) overlain by Boulder Clay and substantial areas of peat. Land use; grassland and forestry; significant number of lochs.
81005	Piltanton Burn at Barsolus	34.2	NX1069956333	210699.0	556333.0	54°51'57.0711"N 4°57'04.7903"W	54.86585	-4.95133	Piltanton Burn	Barsolus	6.2	SEPA-SW	133142	81	1985-01-01	2011-12-31	VA	19.0		28.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1985-12-01	2011-12-31	0.718	0.029	1995-09-19	1995-09-20	15.39	2000-10-10	2000-10-10	0.063	0.177	0.345	1.817	2.714	0.37	9527	9527	100.0				8.3	20.3	84.0	136.8	181.2	1100	1165	0.0247	0.2041	0.7356	0.0103	0.0194	0.065	0.2174	0.6747	0.0317	0.0033			0.6756	0.3244	0.2007	0.0298	0.5934	0.51	0.369	0.97	64.2	41.47	35.4	47.9	10.5	16.09	8.41	79	79	0.28	8.4	32.83	0.572	0.669	0.0672	0.0009			0.0016					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station with an artificial channel.	Artificial channel maintained by statutory drainage scheme. Cableway.	Station utilises check weir as control to low flows. Flood flows generally contained. Very poor high flow rating.	Major weed growth problems requiring complicated rating (not yet applied to 1997 dmfs, treat with caution).	Lowland catchment. Ordovician shales and greywackes; approx. 80% overlain by superficial deposits. Land use: grassland & arable; a little forestry in upper catchment.	Some abstraction may take place.
81006	Water of Minnoch at Minnoch Bridge	141.0	NX3628774600	236287.0	574600.0	55°02'19.9371"N 4°33'48.6110"W	55.03887	-4.5635	Water of Minnoch	Minnoch Bridge	27.4	SEPA-SW	133168	81	1986-01-01		VA	150.0		24.0	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1986-08-01	2023-09-30	7.802	0.074	1992-06-30	1992-06-30	153.3	1991-12-21	1991-12-21	0.554	2.14	4.106	19.75	27.55	0.27	13575	13574	99.993				29.1	108.2	309.2	547.8	843.0	1955	1992	0.4097	0.0003	0.4642	0.1058	0.0032	0.4726	0.0009	0.2521	0.2623	0.0004			1.0			0.0692	0.4766	0.69	0.353	0.935	167.0	50.31	55.9	75.5	12.2	27.87	15.22	323	231	0.27	29.1	139.01	0.829	0.796	0.0536	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station in a natural catchment with rugged uplands.	Velocity area station on straight reach with gravel bed below steep rocky section.	Cableway spans across low rh floodbank - which is occasionally breached.		Natural catchment including rugged uplands. Impermeable bedrock (Ordovician shales and greywackes) overlain with superficial deposits. Extensive forestry (Glentrool Forest); several lochs.
81007	Water of Fleet at Rusko	77.0	NX5919858998	259198.0	558998.0	54°54'20.8555"N 4°11'51.4222"W	54.90579	-4.19762	Water of Fleet	Rusko	7.6	SEPA-SW	133177	81	1988-05		VA	70.0		6.0	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1988-05-01	2023-09-30	3.598	0.069	1995-08-21	1995-08-23	59.65	1991-12-21	1991-12-21	0.264	0.903	1.714	9.23	13.64	0.28	12936	12936	100.0				8.0	86.0	171.3	345.2	707.8	1836	1810	0.4408	0.0037	0.4224	0.1253	0.0056	0.4573	0.0025	0.2684	0.2685	0.0012			1.0		0.0285	0.1649	0.1783	0.68	0.385	0.991	131.8	49.02	58.1	76.8	12.6	18.44	9.98	195	130	0.15	8.0	77.39	0.753	0.835	0.0537	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station on the Water of Fleet, upstream of Gatehouse of Fleet.	Velocity area station on short straight reach with gravel bed and gravel shoal control.	Flows well contained with help from rh floodbank. New rating applied since 10/10/2008 when a flood event resulted in control change.		Predominatly low-lying catchment. Impermeable bedrock (Silurian shales with granitic intrusion which forms highest point in catchment at Cairnsmore of Fleet); overlain with superficial deposits. Rugged moorland catchment with extensive forestry.
82001	Girvan at Robstone	245.5	NX2167099665	221670.0	599665.0	55°15'31.6995"N 4°48'27.7959"W	55.25881	-4.80772	Girvan	Robstone	9.1	SEPA-SW	133123	82	1963-01-01		VA	90.0		10.9	true	true	false	true	false	false	false	true	true	false	true	false	false	S	1963-10-01	2023-09-30	6.779	0.016	2021-07-25	2021-07-25	112.8	1985-09-21	1985-09-21	0.469	1.637	3.34	17.26	25.04	0.34	21915	21915	100.0	1963-09-05		86.645	10.0	58.4	189.0	323.0	656.7	1328	1368	0.1969	0.0359	0.6546	0.0811	0.0143	0.2522	0.0234	0.5747	0.1291	0.0061	0.4647	0.3379	0.1974		0.0113	0.0183	0.7284	0.6	0.4	0.942	105.9	42.27	39.1	54.2	10.0	55.15	26.07	193	315	0.11	10.0	243.63	0.741	0.893	0.0547	0.0022			0.004			1962..1981	1963-09-05..1982-05-31	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the River Girvan. Flows affected by abstractions from Loch Bradan.	Velocity area station approx. 15m wide.	Low flow control is an informal gravel weir built in 1982, which is subject to re-grading in substantial floods. Flood banks contain all flows (pre-1982, right bank inundated beyond 2.2m). Peak flow ratings from current meter gaugings. Rating for period up to 1982 max gauging 2.2m (about 0.9 QMED); post-1982 max gauging up to 1.9m (about 0.7 QMED), simple extrapolation beyond. Gaugings to 1982 show scatter; may suggest a changing relationship.	Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	Upland catchment draining from Carrick Forest. Complex geology: Ordovician/Carboniferous metamorphics and igneous formations; predominantly overlain by superficial deposits, drift and peat also. Mostly hill pasture with some mixed farming in the valley and afforestation in the headwaters; several lochs.	Runoff diminished by abstractions from Loch Bradan. Additional storage in a few high level lochs.
82002	Doon at Auchendrane	323.8	NS3378316035	233783.0	616035.0	55°24'35.9271"N 4°37'37.3970"W	55.40998	-4.62705	Doon	Auchendrane	22.2	SEPA-SW	133060	82	1974-01-01		VA			6.2	true	false	false	false	false	false	false	true	false	false	true	false	false	P	1974-07-01	2023-09-30	7.768	1.998	1989-06-19	1989-06-19	76.63	1994-12-11	1994-12-11	2.807	3.895	5.124	16.18	22.07	0.57	17989	17986	99.983				20.8	89.1	261.5	424.7	843.0	1513	1580	0.1909	0.0175	0.6328	0.1077	0.0061	0.2416	0.0243	0.5338	0.1538	0.0085	0.187	0.2799	0.5331		0.0039	0.0755	0.5439	0.61	0.328	0.818	112.9	47.41	47.4	66.9	11.0	57.98	32.91	260	319	0.05	20.8	313.36	0.863	0.897	0.0616	0.0006			0.0016					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station on the River Doon to the South of Prestwick.	Velocity area station in a straight section.	Riffle control at low flows, rock boulder control at high discharges. Wide floodplain u/s but all flows contained.		Mostly upland catchment developed on basement rocks - metamorphosed sediments (Ordovician and Carboniferous) and igneous formations; >60% covered by superficial deposits. Hill pasture is the principal land use, some afforestation - mostly in headwaters. Significant extent of lochs.	Flow regime heavily influenced by regulation releases from Loch Doon (129.5 sq.km) - large export of water reduces runoff substantially.
82003	Stinchar at Balnowlart	341.0	NX1074983222	210749.0	583222.0	55°06'25.8433"N 4°58'05.9598"W	55.10718	-4.96832	Stinchar	Balnowlart	8.6	SEPA-SW	133062	82	1972-01-01		VA			13.0	true	true	false	true	false	false	false	true	false	false	true	false	false		1973-01-01	2023-09-30	11.034	0.028	1975-07-08	1975-07-08	169.3	1974-01-30	1974-01-30	0.545	2.735	5.858	27.54	39.44	0.3	18535	18535	100.0	1972-10-01		200.741	8.5	99.8	184.3	328.3	623.8	1500	1507	0.316	0.0115	0.5072	0.1544	0.0083	0.4243	0.0061	0.4031	0.1625	0.0014	0.0026	0.081	0.9163			0.2768	0.5567	0.63	0.392	0.987	110.4	45.1	42.3	57.1	10.9	50.74	24.61	201	289	0.07	8.5	324.54	0.843	0.935	0.0613	0.0			0.0016					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a rural catchment with extensive forested upland areas in the west.	Velocity area station in long straight reach. Approx. 20m wide section.	Riffle control. All but exceptional floods contained (<3.1m). Peak flow ratings derived from current meter gaugings up to 3 m (about 0.9 QMED), simple extrapolation beyond. Hydrometric performance has been modestly affected by a leaking stilling well, known to still be leaking as of Jan 2010, although extent of effect on hydrometric performance is unknown.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Catchment topography approx. 2/3 lowland and 1/3 upland. Predominantly impermeable bedrock dominated by metamorphosed sandstone and shales (Ordovician) with igneous outcrops in the headwaters, overlain with Peat and Boulder Clay. Rural catchment with extensive forested upland areas in W (Carrick Forest); hill pasture elsewhere. Afforestation.	PWS abstractions cause small reduction in runoff. Very limited storage within the catchment.
83002	Garnock at Dalry	88.8	NS2937548738	229375.0	648738.0	55°42'07.1443"N 4°43'00.4338"W	55.70198	-4.71679	Garnock	Dalry	19.1	SEPA-SW	116020	83	1963-01-01		VA			35.4	true	true	true	true	false	false	false	false	false	false	false	false	false		1963-10-01	2023-09-30	3.042	0.003	1975-07-08	1975-07-08	57.78	2020-08-04	2020-08-04	0.185	0.565	1.232	8.124	12.52	0.2	21915	8068	36.815	2014-11-21		68.045	21.4	45.1	183.4	393.3	520.4	1692	1715	0.0767	0.0029	0.6506	0.2124	0.0461	0.1394	0.0391	0.5007	0.2676	0.0429	0.4117		0.5883			0.1656	0.5205	0.61	0.369	0.944	94.9	43.85	48.5	63.2	10.9	20.17	10.37	201	151	0.3	21.4	91.21	0.906	0.686	0.0769	0.0133	0.678	0.551	0.0221	0.774	0.57			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station downstream of the Muirhead and Camphill Reservoirs.	River section 0.8km d/s of Dalry. Station added to peak flows dataset in September 2023 (WINFAP Files v12).	After a long period of closure, the station was reopened on 21/11/2014 to inform flood management. The new station infrastructure is situated on top of the original station plinth. The station is gauged up to 2.657m, with a measured flow of 57.7 cumecs. The rating has been extended by flow modelling to increase the confidence of flood estimation. The new station has a different datum from the original site.			Runoff substantially reduced by PWS exports from u/s reservoirs.
83003	Ayr at Catrine	166.3	NS5252225909	252522.0	625909.0	55°30'16.6522"N 4°20'11.7259"W	55.50463	-4.33659	Ayr	Catrine	89.9	SEPA-SW	133071	83	1970-01-01		VA	500.0		16.7	true	true	false	true	false	false	false	true	false	false	false	false	false	H	1970-08-01	2023-09-30	5.301	0.065	2021-05-19	2021-05-19	121.6	1994-12-11	1994-12-11	0.599	1.345	2.471	13.56	19.88	0.3	19419	19312	99.449	1970-06-02		104.852	86.0	178.3	271.3	400.0	591.5	1280	1292	0.0686	0.0205	0.5696	0.3191	0.0086	0.0779	0.0118	0.4568	0.4463	0.0052	0.3969	0.2503	0.3528		0.0686	0.3143	0.4184	0.67	0.328	0.991	89.5	48.4	39.1	56.1	9.6	38.77	22.02	281	247	0.17	86.0	167.25	0.593	0.819	0.0455	0.0012			0.0038					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Flows modestly affected by HEP scheme.	Velocity area station (approx. 20m wide) in a long straight reach. There is a flood bank on the lb and retaining wall on the rb.	The low to medium flow control is an informal broad-crested weir. At higher flows when the weir drowns out, natural channel features will become more prevalent including some sharp bends in the river downstream. Old Howford Bridge 1.5k downstream may be a influential control feature at very high flows. All flows are contained in the channel. Peak flow ratings derived from current meter gaugings up to 1.5m and are based on simple extrapolation beyond this stage.	Missing data during May 2021 due to weir collapse. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	A catchment of rugged topography draining W from Southern Uplands. Complex bedrock - Carboniferous sediments and igneous outcrops dominate; extensive superficial deposits (mostly Boulder Clay and peat). Hill grazing is the main land use; some forestry. No significant catchment changes known.	A responsive, natural catchment but the flow pattern is modestly affected (esp. at low flows) by the operation of a small HEP scheme 1km u/s. Some open cast mining in upper areas.
83004	Lugar Water at Langholm	181.0	NS5077021755	250770.0	621755.0	55°28'00.4790"N 4°21'43.4530"W	55.4668	-4.36207	Lugar Water	Langholm	80.7	SEPA-SW	133103	83	1972-01-01		VA	153.3		10.0	true	true	false	true	false	false	false	true	false	true	false	false	true	N	1972-02-01	2023-09-30	5.644	0.071	1981-09-03	1981-09-03	129.9	1981-01-02	1981-01-02	0.383	1.158	2.435	14.81	21.8	0.27	18870	18857	99.931	1972-02-01		133.21	82.6	143.1	248.2	382.0	560.5	1290	1254	0.1935	0.0376	0.5321	0.1903	0.0282	0.2005	0.0204	0.4693	0.2876	0.0206	0.3412	0.5159	0.1429		0.0191	0.3536	0.6019	0.62	0.31	0.99	70.2	47.35	36.8	52.4	9.5	34.87	17.01	255	313	0.21	82.6	203.81	0.654	0.803	0.0548	0.0045			0.0087	0.779	0.533	1971		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a very responsive, natural and mostly upland catchment.	Velocity area station; approx. 15m wide.	Rock/boulder control (may be subject to erosion/accretion) plus a thin-plate weir in the mill lade (Langholm B, local no. 140, station level 84.17mOD; closed 1990). Combined flows are archived. Peak flow ratings derived from current meter gaugings up to 1.93m (about 0.5 QMED), simple extrapolation beyond.	Flows from Jan 2002 reprocessed in 2012. Icing evident in hydrograph 1-14/1/2011.	A mostly upland catchment developed, mainly, on Carboniferous sediments (chiefly Coal Measures) and igneous formations; extensively overlain by superficial deposits. Hill grazing is the major landuse with some forestry. No significant catchment changes known.	Very responsive, natural catchment (open cast mines and minor effluent discharge close to the station).
83005	Irvine at Shewalton	380.7	NS3452436853	234524.0	636853.0	55°35'49.5339"N 4°37'40.0397"W	55.59709	-4.62779	Irvine	Shewalton	4.8	SEPA-SW	133125	83	1972-01-01	2009-12-31	VA	431.3		8.3	true	true	true	true	false	false	false	false	false	false	true	false	false	E	1972-02-01	2009-12-31	9.665	0.135	1989-06-24	1989-06-24	214.0	1994-12-11	1994-12-11	0.55	1.965	4.138	25.31	37.78	0.27	13849	13843	99.957	1972-01-01		200.493	6.2	40.2	142.8	266.0	383.3	1211	1228	0.1298	0.1202	0.6024	0.0778	0.0605	0.1448	0.0633	0.6083	0.1311	0.0487	0.275	0.2966	0.4285		0.0552	0.1753	0.7431	0.6	0.339	0.98	55.5	42.41	37.3	52.8	9.4	52.58	27.56	151	241	0.24	6.2	367.57	0.899	0.823	0.0813	0.024	0.826	0.571	0.0271	0.841	0.571			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with bank stability issues since March 2011.	Velocity area station approx. 30m wide.	Rock bar/bridge debris control - channel control at high flows. All flows contained. Peak flow ratings derived from current meter gaugings up to 3.8m (about 1.5 QMED), simple extrapolation beyond.	Flows since March 2011 not currently held on the NRFA due to bank stability issues.	Generally upland catchment but topography more subdued below Greenholm. Bedrock predominantly Carboniferous sediments with basalt tracts towards headwaters. Extensively overlain by superficial deposits, mainly Boulder Clay with peat in the headwaters. Land use: mixed farming and hill grazing; some forestry in the upper catchment. Kilmarnock (12km u/s) is the only large urban area.	A responsive, sensibly natural flow regime (but affected by effluent from STW). In the near future there is a comprehensive flood prevention scheme planned.
83006	Ayr at Mainholm	574.0	NS3617921634	236179.0	621634.0	55°27'39.7611"N 4°35'33.1664"W	55.46104	-4.59255	Ayr	Mainholm	2.5	SEPA-SW	133111	83	1975-01-01		VA	574.5		8.1	true	true	true	true	false	false	true	true	true	true	true	false	true	N	1976-08-01	2023-09-30	16.198	0.785	1989-06-24	1989-06-24	310.6	1994-12-11	1994-12-11	1.511	3.762	7.172	42.67	63.43	0.29	17227	17227	100.0	1975-10-01		256.557	4.7	86.1	212.1	368.2	591.5	1221	1212	0.1194	0.0894	0.5858	0.1721	0.0195	0.1399	0.0632	0.5303	0.248	0.0158	0.3365	0.4191	0.2445		0.0273	0.2404	0.6277	0.62	0.33	0.992	74.0	46.09	36.2	51.7	9.4	69.48	41.43	219	288	0.15	4.7	579.03	0.726	0.88	0.0582	0.0034			0.0061	0.748	0.844	1991		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, lowest on the River Ayr. Winter icing can affect flows.	Velocity area station approx. 30m wide located in a long straight section. Very steep banks (approx. 6m); most flows contained - overspilling occurs on lb.	Channel control. Rating derived from current meter gaugings up to 3.6m (about QMED), simple extrapolation beyond. Lower end of ratings (<0.615m) recalibrated in 2006 as gaugings since 2001 showed flows were being slightly overestimated.	December 1981 flows may be affected by ice build-up and are under review. Severe icing in December 2010 led to ice floes in river and stage increase of c.1m at station - flows are estimated. Flows since Jan 2000 reprocessed in 2012. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Catchment topography approx. 2/3 lowland and 1/3 upland. Complex bedrock geology; Carboniferous sediments (chiefly Coal Measures) dominate, but some igneous formations and Permian sandstones in upper reaches. Extensively overlain by superficial deposits (mostly Boulder Clay and peat). No major urban centres. Hill grazing and forestry in upland headwaters, mixed farming in lowlands. No significant catchment changes known although previously mined for coal.	Responsive, natural catchment.
83007	Lugton Water at Eglinton Castle	54.6	NS3157942059	231579.0	642059.0	55°38'34.1119"N 4°40'39.5652"W	55.64281	-4.67766	Lugton Water	Eglinton Castle	7.0	SEPA-SW	133083	83	1978-01-01		B VA	54.4		55.2	true	false	false	false	false	false	false	true	false	false	false	false	false		1977-11-01	2018-06-09	1.74	0.031	2000-07-20	2000-07-20	39.92	1994-12-11	1994-12-11	0.111	0.354	0.744	4.659	6.831	0.27	14831	14820	99.926				7.7	31.9	93.3	170.2	255.9	1286	1343	0.0849	0.0466	0.8147	0.0398	0.013	0.1051	0.0361	0.8064	0.0391	0.0096	0.5145	0.2238	0.2617		0.0488	0.1016	0.6421	0.61	0.345	0.981	46.5	39.94	40.8	56.2	9.9	27.95	14.43	99	209	0.25	7.7	56.94	1.046	0.823	0.1148	0.0029			0.0029					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station in a linear, mostly lowland catchment.	Velocity area station with a wide floodplain.	Cableway (in a straight reach) used for rating. Broad-crested masonry weir as control. Insensitive at low flows; algae can accumulate on crest and cause flow drops on removal (e.g. June 2008 and June 2009).	A new fish pass was installed in 2018 causing a datum change.	A linear, mostly lowland, catchment. Impervious basalts dominate the headwaters, Carboniferous sediments below; with significant cover by superficial deposits. Land use: predominantly grassland, some forestry and agriculture. Loch Libo, in the upper reaches, has little effect on flows.	Very responsive flow pattern.
83008	Annick Water at Dreghorn	90.6	NS3511438426	235114.0	638426.0	55°36'41.0831"N 4°37'09.7588"W	55.61141	-4.61938	Annick Water	Dreghorn	14.0	SEPA-SW	133078	83	1980-01-01		VA	36.3		17.5	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1980-10-01	2023-09-30	3.503	0.011	2018-07-26	2018-07-26	110.4	1994-12-10	1994-12-10	0.195	0.653	1.529	9.094	13.38	0.26	15705	15102	96.16				9.3	41.7	139.0	223.5	280.7	1265	1324	0.0622	0.0396	0.7793	0.0666	0.0435	0.0764	0.0512	0.757	0.0864	0.025	0.3285	0.116	0.5554		0.0076	0.1304	0.6862	0.61	0.346	0.984	50.7	40.85	39.6	55.5	9.8	31.63	19.24	136	226	0.28	9.3	93.14	0.832	0.825	0.0802	0.0143	0.765	0.519	0.0179	0.852	0.605			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station on the Annick Water in a lowland catchment.	Velocity area station.	Some control from a bridge 30m d/s. Various temporary controls have been sited in the river following the removal of an earlier weir (Jul 1982). Calibration checked regularly. Lack of gaugings since 2012 has led to recommended caution for flow beyond about 5 cumecs.		Lowland catchment. Bedrock mainly Coal Measures overlain by Boulder Clay, with river terraces and raised beach deposits along river channel. Land use predominantly grazing with isolated forested areas. Urbanisation limited to Stewarton and Irvine.	Long Loch and Corsehouse Res. can affect the flow regime.
83009	Garnock at Kilwinning	183.8	NS3068542409	230685.0	642409.0	55°38'44.3024"N 4°41'31.4165"W	55.64564	-4.69206	Garnock	Kilwinning	4.4	SEPA-SW	133101	83	1976-01-01		VA	379.4		9.0	true	false	false	false	false	false	false	true	false	false	false	false	false		1978-01-01	2023-09-30	6.29	0.01	2018-07-09	2018-07-09	234.2	1994-12-10	1994-12-10	0.316	1.335	2.64	16.35	23.98	0.24	16709	16706	99.982				4.4	39.0	111.3	352.9	520.4	1525	1553	0.0818	0.0069	0.7186	0.1362	0.0455	0.1349	0.0582	0.5757	0.1797	0.0421	0.5258	0.0091	0.4651		0.0153	0.0884	0.5408	0.61	0.367	0.945	79.5	41.95	45.3	59.2	10.5	28.55	15.98	159	167	0.25	4.4	175.26	0.914	0.833	0.0801	0.0133	0.714	0.543	0.0211	0.81	0.556			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station in a very responsive catchment with stage measurement uncertainty since August 2009.	A velocity-area station.	River section with long round-crested masonry weir (with central rectangular notch) acting as the control. All flows contained. Exceptionally high tides may influence water levels. No gaugings below 0.6 cumecs and weir deterioration means that flows below 2.0 cumecs should be treated with extreme caution. Stage measurements are subject to further uncertainty since August 2009 due to issues with subsidence and vandalism.		Rugged upland headwaters (peat and Boulder Clay overlying igneous formations), mostly Carboniferous sediments covered by superficial deposits in lower catchment. Mainly rural with urbanisation along main valley at Kilbirnie, Dalry and Kilwinning; some forestry.	Very responsive catchment notwithstanding several reservoirs (including Muirhead and Camphill) in the headwaters - small net diminution in runoff.
83010	Irvine at Newmilns	72.8	NS5325237188	253252.0	637188.0	55°36'21.9863"N 4°19'51.7192"W	55.60611	-4.33103	Irvine	Newmilns	60.9	SEPA-SW	133117	83	1977-01-01		FV			19.2	true	true	true	true	false	false	true	true	true	true	false	false	true	N	1976-09-01	2023-09-30	2.445	0.077	1984-08-25	1984-08-25	65.4	1994-12-10	1994-12-10	0.212	0.6	1.112	6.3	9.143	0.28	17196	17076	99.302	1976-09-01		54.178	62.3	141.2	240.6	309.4	383.3	1352	1339	0.2352	0.0759	0.48	0.1805	0.023	0.2657	0.0198	0.4532	0.2455	0.015	0.0732	0.1852	0.7417		0.199	0.3524	0.427	0.6	0.399	0.996	77.7	42.6	39.7	56.9	9.5	18.09	9.5	232	226	0.14	62.3	75.48	0.489	0.924	0.0437	0.007	0.662	0.333	0.0082	0.69	0.314			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A flat v weir station to the East of Kilmarnock.	Flat V weir within broad-crested flanks in a long straight reach. Stage data collected for this site dates back to 1959. Station added to peak flows dataset in September 2023 (WINFAP Files v12).	Weir superseded (Sep 1976) an unstable gravel bar control. Rating based on gaugings up to c.40 cumecs, a daily mean flow which has only been exceeded on 2 consecutive days in the record.		Mostly upland catchment developed on basalts and metamorphosed sedimentary formations (mostly Carboniferous and ORS); extensively overlain by superficial deposits. Moorland and rough pasture predominate, significant afforestation in the north, mixed farming in the valley - Greenholm and Darvel are the largest settlements.	Sensibly natural flow regime.
83011	Ayr at Wellwood	60.0	NS6598926182	265989.0	626182.0	55°30'39.4495"N 4°07'25.2135"W	55.51096	-4.12367	Ayr	Wellwood	211.6	SEPA-SW	133135	83	1991-10-10	2010-04-22	VN	21.9			true	false	false	false	false	false	false	false	false	false	false	false	false		1991-10-10	2010-04-22	2.147	0.25	1996-09-23	1996-09-23	69.11	1994-12-11	1994-12-11	0.409	0.739	1.152	5.148	7.284	0.41	6770	6765	99.926				191.1	230.9	305.8	428.4	591.5	1358	1353	0.0454	0.0003	0.5019	0.407	0.0121	0.0402	0.0039	0.4943	0.452	0.0055	0.6953	0.1543	0.1504		0.0777	0.2157	0.3546	0.71	0.347	0.978	105.6	48.5	40.6	58.9	9.7	18.26	9.09	319	309	0.22	191.1	60.72	0.45	0.757	0.0358	0.0012			0.0048					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station set-up for a coal project, closed in April 2010.	Station set-up for a coal project. Station closed April 2010.			Mid-altitude catchment (>200 m). Land use is mostly grasslands and heath.	Rather responsive catchment.
83012	Gass Water at Welltrees	13.9	NS6283524204	262835.0	624204.0	55°29'32.3591"N 4°10'21.3484"W	55.49232	-4.1726	Gass Water	Welltrees	203.3	SEPA-SW	133134	83	1992-02-01	2006-12-31	VA	10.8			true	false	false	false	false	false	false	false	false	false	false	false	false		1992-01-01	2006-12-31	0.462	0.008	1998-08-02	1998-08-06	9.707	1994-12-11	1994-12-11	0.025	0.08	0.161	1.257	2.018	0.21	5479	5479	100.0				200.6	254.3	344.6	418.1	494.8	1421	1348	0.0835		0.5742	0.3271	0.0093	0.078		0.2665	0.6547	0.0008	0.8054	0.1946			0.0503	0.587	0.3306	0.71	0.266	1.0	71.8	56.28	38.7	54.3	9.8	10.79	6.18	340	251	0.42	200.6	12.52	0.318	0.962	0.0278	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station set-up for a coal project, closed in December 2006.	Station set-up for a coal project. Station closed December 2006.			Mid-altitude catchment (>200 m). Predominantly permeable bedrock with extensive impermeable superficial deposits. Land use is mostly grasslands and heath.	Rather responsive catchment.
83013	Irvine at Glenfield	218.0	NS4299636996	242996.0	636996.0	55°36'04.2581"N 4°29'36.8155"W	55.60118	-4.49356	Irvine	Glenfield	20.6	SEPA-SW	335374	83	1913-01-01		B	85.0			true	true	false	false	true	false	false	true	false	false	false	false	false	N	1982-05-01	2023-09-30	6.294	0.001	1984-07-21	1984-08-19	223.4	1994-12-10	1994-12-10	0.329	1.32	2.713	16.7	25.29	0.27	15128	15079	99.676	1913-08-29		87.9	21.5	55.4	160.1	275.2	383.3	1221	1222	0.128	0.1626	0.5875	0.0779	0.0373	0.1424	0.054	0.6425	0.1308	0.0292	0.3358	0.2788	0.3854		0.0709	0.1661	0.7457	0.59	0.348	0.986	63.9	41.73	37.0	52.9	9.3	39.3	20.17	167	249	0.22	21.5	211.89	0.775	0.807	0.0704	0.015	0.799	0.402	0.0158	0.785	0.407	1913..1981	1913-10-01..1982-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Broad crested masonry weir on the River Irvine.	Broad crested masonry weir, diagonal to flow, approx. 15-20m wide. Originally, station installed and maintained by Glenfield and Kennedy Works. Station taken over by CRPB (now SEPA) on 14/04/1982.	The flood walls and banks are approx. 3m high. All but very high flows contained. Pre-1982 ratings were derived by hydraulic formulae with correction for drowning and skewness of weir and checking against a few measurements. Uncertainty of rating curves (pre-1982) above 113cumecs. Peak flow ratings derived from current meter gaugings up to 0.7m (about 0.3 QMED), simple extrapolation beyond. Rating accuracy not good at low flows, reflected in occasional lower flows recorded than at Newmilns upstream.	Bypassing known in the past via abandoned railway line (1932 and 1961 events). Peak flows rejected until 1982 because there was significant influence by a very active sluice.	Mostly lowland catchment. Predominantly Carboniferous and igneous bedrock, with localised ORS; extensively overlain by superficial deposits (mainly Boulder Clay). Rural catchment with forested areas in NE and urbanisation along main valley (Darvel, Newmilns, Galston and Kilmarnock). Flood walls built approximately spring 1998.	Natural flow regime.
84001	Kelvin at Killermont	335.1	NS5583970532	255839.0	670532.0	55°54'22.4509"N 4°18'27.4415"W	55.90624	-4.30762	Kelvin	Killermont	27.0	SEPA-SW	133099	84	1948-01-01		VA	31.4		6.6	true	true	true	true	false	false	false	true	false	false	true	false	false	E	1948-10-01	2023-09-30	8.671	0.607	2010-06-26	2010-06-26	182.0	1994-12-12	1994-12-12	1.495	3.2	5.094	20.13	27.97	0.42	27393	27074	98.835	1946-10-18		80.498	26.7	48.2	89.9	325.4	577.4	1257	1258	0.1159	0.0331	0.5979	0.0812	0.1357	0.1942	0.0868	0.4311	0.1314	0.1445	0.6857	0.0655	0.2488		0.072	0.061	0.7075	0.58	0.405	0.951	77.6	40.58	37.2	50.9	9.2	37.88	20.69	138	166	0.12	26.7	335.21	1.265	0.864	0.1124	0.0603	0.776	0.816	0.0657	0.847	0.888	1947..1961	1948-09-15..1962-06-29	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station affected by vigorous seasonal weed growth.	Velocity area station; approx. 20m wide. Station moved 300m u/s (from Killermont) in 1962.	Low flow control was unstable gravel control 40m d/s; replaced by gabion weir in Aug 1989. It was subsequently capped with concrete and the upstream face lined with sheet piling, this was completed on the Sept 1995. High flow control was a small island in mid-channel immediately below station; now it is probably the channel bend d/s. The banks have contained all recorded flows. Multiple peak flow ratings across period of record derived from current meter gaugings, simple extrapolation beyond. There is particularly low confidence in the extrapolated flow due to likely backing up from the road bridge downstream and resistance in the woody floodplain.	Some monthly naturalised flows available (1970-74). Pre-1962 data is rejected because the gauging station was moved 300m upstream. Very low confidence in the accuracy of AMAX1 (1994) due to the exceptionally high magnitude; complex interaction with wooded banks and possible backing up from downstream bridge. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Predominantly lowland catchment, some upland headwaters in the Campsie Fells. The main channel runs along the northern edge of the Central Lowlands taking tributaries from the faulted igneous block to the north - remainder of catchment is chiefly Carboniferous sediments overlain by, predominantly, Boulder Clay. Mixed land use - moorland, forestry and urban concentrations. A number of small lochs. Notable floodplains. Flood prevention schemes along the river (e.g. at Kirkintilloch, completed March 2003), more projected in the future.	Extensive canalisation of river with the Forth and Clyde canal draining through catchment; feeders probably only influence low flows. Effluent return. Mugdock and Craigmaddie Reservoirs for PWS transit water from Loch Katrine via pipelines, probably no effect on Kelvin catchment.
84002	Calder at Muirshiel	12.4	NS309638	230900.0	663800.0	55°50'15.7235"N 4°42'06.8070"W	55.8377	-4.70189	Calder	Muirshiel	229.0	SRCW	133116	84	1952-01-01	2003-03	TP	26.3			true	true	false	true	false	false	false	false	false	false	false	false	false	P	1952-04-01	2001-12-04	0.658	0.0	1969-06-13	1969-06-14	12.81	1994-12-10	1994-12-10	0.032	0.113	0.255	1.841	2.685	0.16	18145	9457	52.119	1952-08-01	1976-12-31	16.31	231.2	273.9	356.3	449.3	491.0	2246	2316	0.0028		0.3149	0.6761		0.0031		0.0136	0.9784				1.0			0.7585	0.0571	0.61	0.272	0.988	95.1	58.06	57.5	80.4	12.5	8.35	4.41	359	49	0.38	231.2	12.05	0.547	0.821	0.0399	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound sharp-edged weir. Poor quality and patchy record.	Compound sharp-edged weir approx. 20m wide. 7km above the river outfall to Castle Semple Loch. Station closed in 1976. SEPA re-opened the station in Dec 1993 with main purpose of pollution prevention and control; but the data is of poor quality. Re-opened station closed in 2003.	U/s of station is a very active gravel/silt bank. Limit of measurement 16cumecs; no information on hydrometric performance. Theoretical rating (Lea rated).	Calder Reservoir was breached in 1984, it controlled about 50% of the catchment. Very patchy record but includes most of the 1950s-60s.	Carboniferous basalt on igneous intrusions, overlain by Boulder Clay. Peat in some upland areas. Upland catchment. Land use comprises of moorland and rough grazing. No significant catchment changes known.	Very flashy response. Runoff reduced by major u/s abstraction.
84003	Clyde at Hazelbank	1092.9	NS8353145323	283531.0	645323.0	55°41'14.4810"N 3°51'14.9525"W	55.68736	-3.85415	Clyde	Hazelbank	51.7	SEPA-SW	133094	84	1957-01-01		VA	181.9		5.5	true	true	true	true	false	false	false	true	false	false	false	false	false	H	1956-10-01	2023-09-30	28.943	2.197	1959-10-11	1959-10-11	486.1	1994-12-11	1994-12-11	5.388	11.21	17.58	64.85	91.16	0.49	24471	24440	99.873	1956-01-01		284.192	53.3	210.3	295.8	460.4	745.2	1181	1165	0.1031	0.0794	0.5972	0.193	0.0158	0.1482	0.0814	0.5273	0.2308	0.0076	0.2634	0.2045	0.5321		0.0761	0.0751	0.5218	0.6	0.45	0.97	116.3	41.73	37.5	51.8	9.5	95.12	48.31	318	22	0.05	53.3	1093.1	0.851	0.818	0.0645	0.0019			0.0039					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in Southern Uplands. HEP upstream.	Velocity area station; approx. 60m wide in a straight section. The cableway was destroyed during a storm in 1998.	Natural bedrock control. Well calibrated. All flows contained. Weed growth apparent in May to September affecting low flows. Peak flow rating derived from current meter gaugings up to 3.6m (about 1.66 QMED), simple extrapolation beyond. One peak flow rating across period of record.	Some monthly naturalised flows available. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Predominantly upland catchment. Catchment drains from the Southern Uplands. Complex bedrock geology with Metamorphics and igneous rocks extensively overlain, in the lower half of the catchment, by superficial deposits, mainly Boulder Clay. Hill grazing is principal land use with some forestry and arable lands. Sparsely populated except for Lanark 5km u/s. Minimal floodplains. No significant catchment changes known.	Very minor net impact of artificial influences (some naturalised data) but flow pattern is affected by operation of u/s HEP station (Stonebyres Falls). Some small reservoirs in headwaters. Mining can affect low to medium flows.
84004	Clyde at Sills of Clyde	741.8	NS9283742386	292837.0	642386.0	55°39'47.2463"N 3°42'18.2098"W	55.66312	-3.70506	Clyde	Sills of Clyde	183.1	SEPA-SW	133126	84	1956-01-01		VA	411.3		5.9	true	true	true	true	false	false	false	true	false	false	true	false	false		1957-10-01	2023-09-30	19.86	1.614	1959-10-11	1959-10-12	309.8	2022-12-30	2022-12-30	3.794	8.009	12.3	43.89	61.64	0.51	24106	24106	100.0	1955-10-01		214.838	180.1	217.7	327.9	489.9	745.2	1249	1223	0.0893	0.066	0.5776	0.2487	0.0093	0.1302	0.0758	0.5313	0.2532	0.0044	0.1755	0.1234	0.7012		0.0754	0.0591	0.4253	0.6	0.458	0.964	135.1	42.58	39.5	54.1	9.8	78.33	42.94	343	357	0.05	180.1	742.26	0.878	0.751	0.0625	0.0011			0.0021					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the Clyde draining the Southern Uplands.	Velocity area station; about 15m wide section. Sited on a 200m straight natural reach between two sharp opposing bends. Flows are straight at cableway but there is some turbulence. Station transferred from SDD to Clyde RPB in Jul 1969.	Natural control. Low flow control is a riffle 30m d/s. At higher flows the remnants of two old mill weirs around 800m and 1.2km downstream may be influential. There is a five arch stone bridge 2.2km downstream that is likely the primary control during very big events. Weed growth in summer affects low flows. To date all flows contained. Peak flow ratings derived from current meter gaugings up to 2.9m (measured flow of 346 cumecs, which is around 1.7 QMED), with simple extrapolation beyond the highest gauging.	Peak flows from October 1955. GDF from 1957. Full period of record peak flow data reviewed and released in September 2020 (WINFAP Files v9) and in August 2024 (WINFAP Files v13)	Upland catchment draining part of Southern Uplands, with several small storage reservoirs in headwaters. Silurian and Ordovician sedimentary rocks, approx. half of which overlain by superficial deposits, mainly Boulder Clay and sands and gravels. Land use: rough grazing, improved pasture, moorland, and afforestation. No significant catchment changes known.	Small storage reservoirs and one larger reservoir that feeds South Lanarkshire.
84005	Clyde at Blairston	1704.2	NS7043557942	270435.0	657942.0	55°47'50.4350"N 4°04'05.9001"W	55.79734	-4.06831	Clyde	Blairston	17.6	SEPA-SW	133064	84	1958-01-01		VA	830.0		6.9	true	true	false	true	false	true	false	true	false	true	true	true	true	H	1958-10-01	2023-09-30	44.075	3.366	1984-08-23	1984-08-23	676.4	1994-12-11	1994-12-11	7.817	15.33	24.75	104.5	146.2	0.44	23741	23566	99.263	1956-01-01		391.015	17.2	157.1	264.0	426.9	745.2	1151	1139	0.1288	0.0972	0.5573	0.1595	0.0434	0.1687	0.0705	0.5169	0.2025	0.0365	0.2523	0.2828	0.4649		0.0716	0.1056	0.5936	0.59	0.422	0.959	97.3	41.89	36.2	50.2	9.2	120.15	57.36	279	7	0.07	17.2	1699.36	0.843	0.88	0.0643	0.0131	0.703	0.271	0.0182	0.817	0.324	2000		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on River Clyde in the Southern Uplands.	Velocity area station, about 60m wide. Velocity profile slightly uneven due to u/s bend. Steep grass and tree covered banks. Station is subject to vandalism, station burnt down Feb 1997, temporary logger installed (became permanent).	Control formed by piers of redundant rail bridge 300 m d/s. Less confidence in med-high flows than at Daldowie leading to occasional higher peaks at Blairston. Recorder moved from opposite bank in 1974. Peak flow rating derived from current meter gaugings up to 3.4m (1.8 QMED), just below max. recorded stage, simple extrapolation beyond.	Rating change 01/07/1976 evident in flow pattern. Some monthly naturalised flows available (1958-1975). Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Predominantly upland catchment. Bedrock mainly Ordovician s'sts and shales. Lowther Hills in S are Silurian L'st, other upland areas Carboniferous basaltic lavas. The lower reaches of the catchment are overlain by superficial deposits, mainly Boulder Clay. Land use is mainly hill grazing and moorland on high ground, some afforestation; fruit farming in valley. Rapid urbanisation in lower catchment.	Several upland tributaries impounded for PWS. River hydropower schemes u/s of New Lanark; however this scheme does not involve damming, abstraction or diversion so exerts little or no influence on flow regime.
84006	Kelvin at Bridgend	63.7	NS6715074944	267150.0	674944.0	55°56'56.7827"N 4°07'44.4225"W	55.94911	-4.12901	Kelvin	Bridgend	34.6	SEPA-SW	133066	84	1961-01-01	1983-12-31	VA	16.0		7.0	true	false	false	false	false	false	false	false	false	false	false	false	false	E	1963-10-01	1983-02-28	1.984	0.098	1972-08-21	1972-08-21	20.62	1981-10-02	1981-10-02	0.286	0.679	1.224	4.583	6.319	0.44	7091	6969	98.28				36.5	44.2	99.5	375.0	523.6	1377	1332	0.0842	0.0132	0.688	0.0899	0.0955	0.1719	0.0418	0.5218	0.1361	0.114	0.7039		0.2961		0.0963	0.034	0.7583	0.57	0.432	0.949	94.2	41.22	38.7	55.0	9.0	16.71	7.95	150	168	0.28	37.1	64.61	1.423	0.66	0.1208	0.027	0.62	0.856	0.0402	0.789	0.918			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Station was closed in 1983 then re-opened in 1998 as a level only station.	Velocity area station, about 12m wide. River section 340m u/s of Inchbelly Bridge, Kirkintilloch. Station was closed in 1983 then re-opened in 1998 as a level only station. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Natural control. Station is affected by seasonal weed growth. Floods are contained within the banks which are heightened to protect fairly extensive low lying areas upstream. Peak flow rating derived from current meter gaugings up to 2.32m (0.5 QMED), simple extrapolation beyond. After dredging of river in 1976 rating was good fit, after 01/10/1979 however spot gaugings scatter substantially - no rating used from then.		Predominantly coal measures with some Dolerite and Basalt intrusions. Lowland river with some upland tributaries rising from Campsie Fells. Rough and improved pasture, some urban, small amount of forestry. No significant catchment changes known.	Responsive regime. Some small reservoirs and lochs in headwaters. Forth and Clyde Canal fed from some reservoirs.
84007	South Calder Water at Forgewood	93.0	NS7513758572	275137.0	658572.0	55°48'15.2587"N 3°59'37.1166"W	55.80424	-3.99364	South Calder Water	Forgewood	43.8	SEPA-SW	133085	84	1965-01-01	2010-05-10	CC	87.9	130.0	7.3	true	true	true	true	false	false	false	false	false	false	false	false	false	EI	1965-02-01	2010-05-09	1.946	0.257	1994-10-17	1994-10-17	31.56	1990-10-06	1990-10-06	0.686	1.045	1.348	3.79	5.277	0.59	16534	16309	98.639	1965-01-20		20.524	46.4	109.1	193.2	255.1	311.7	911	928	0.1965	0.1309	0.392	0.0864	0.1499	0.2511	0.0831	0.4105	0.1312	0.1225	0.2542	0.7458			0.0357	0.1417	0.7241	0.58	0.331	0.985	47.4	41.65	30.2	41.7	8.3	28.15	15.9	189	260	0.28	46.4	92.32	0.5	0.972	0.0581	0.0618	0.709	0.508	0.0644	0.82	0.696	1964		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound crump profile weir on the South Calder Water, closed in May 2010.	Compound Crump profile weir (centre: 3.7m, flanks: 13.4m). Gradient sufficient to avoid drowning. Vandalism poses a problem. Station closed May 2010.	All flows contained. Theoretical rating confirmed by low flow gaugings up to 0.495m (about 0.06 QMED). Depositions u/s of right flank of weir causing accretion of bank, intermittently dug out in the past.		Relatively subdued topography developed on sedimentary formations of Carboniferous age (chiefly Coal Measures); predominantly overlain by superficial deposits. Land use arable and pasture with some woodland and urbanised areas - the gauging station is located in Motherwell. Large steelworks closed down in mid-90s, hence less water abstraction at Ravenscraig.	Flow pattern influenced by industrial abstractions and discharges - net import of water from the Clyde.
84008	Rotten Calder Water at Redlees	51.3	NS6795960439	267959.0	660439.0	55°49'08.7342"N 4°06'32.3418"W	55.81909	-4.10898	Rotten Calder Water	Redlees	16.8	SEPA-SW	133122	84	1966-01-01		CC		72.0	11.9	true	false	false	false	false	false	false	true	false	false	false	false	false	E	1966-10-01	2023-09-30	1.64	0.046	2023-06-15	2023-06-15	36.03	1994-12-11	1994-12-11	0.148	0.378	0.707	4.232	6.353	0.31	20819	20724	99.544				16.9	100.3	203.0	256.5	372.5	1182	1217	0.0836	0.0204	0.6092	0.1185	0.1461	0.1419	0.0888	0.4745	0.1311	0.1622	0.5668	0.1104	0.3228		0.0202	0.1165	0.7882	0.58	0.315	0.997	53.0	42.21	37.3	52.1	9.2	22.35	13.05	192	21	0.29	16.9	55.41	0.628	1.048	0.069	0.0618	0.829	0.703	0.0695	0.841	0.712			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump profile weir on Rotten Calder Water.	Compound Crump profile weir (central crest: 1.8m, flanks: 4.9m). Occasional vandalism. Removed from peak flows dataset in August 2021 (WINFAP Files v10).	River gradient obviates drowning. Tree debris is a problem and can cause blockage of centre of crump weir. All flows contained. Theoretical rating confirmed by low flow gaugings up to 0.2m (about 0.013 QMED). Data removed from peak flows dataset because station not designed or operated for flood estimation as well as problems with wood and urban debris in weir.	Data for 07/08/08-24/09/08 dubious due to weir blockage.	A mainly impervious catchment (Carboniferous deposits predominate; Drift cover). Moorland and hill pasture in the headwaters, some significant urban growth in the lower catchment (East Kilbride).	Runoff augmented by sewage and industrial effluent.
84009	Nethan at Kirkmuirhill	66.0	NS8097942910	280979.0	642910.0	55°39'54.2410"N 3°53'37.2269"W	55.66507	-3.89367	Nethan	Kirkmuirhill	121.8	SEPA-SW	133102	84	1966-01-01		CC	92.4	90.0	14.4	true	false	false	false	false	false	false	true	false	false	false	false	false	PN	1966-11-01	2023-09-30	1.775	0.009	1967-08-28	1967-08-28	44.39	1994-12-11	1994-12-11	0.186	0.51	0.893	4.365	6.451	0.37	20788	19266	92.678				125.6	204.5	284.2	398.1	521.3	1220	1194	0.2276	0.0814	0.5132	0.1443	0.0234	0.2237	0.0196	0.526	0.2111	0.0152	0.1959	0.3676	0.4364			0.2552	0.73	0.66	0.41	0.976	88.0	45.02	35.5	50.8	9.1	22.0	12.12	291	39	0.22	125.6	67.08	0.4	0.712	0.0345	0.0029			0.0085	0.704	0.397			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound crump profile weir. Flows affected by PWS abstractions.	Compound Crump profile weir (centre crest: 2.4m, flanks: 4.3m); significant accretion u/s of rh crest. Removed from peak flows dataset in February 2018 (WINFAP Files v6).	Flows remain modular and are fully contained; the channel is deeply incised into rock. Wood debris causes periodic problems. Theoretical rating confirmed by low flow gaugings up to 0.215m (about 0.011 QMED).		The Nethan drains from Nutberry Hill. Complex geology - mostly ORS and Carboniferous limestone overlain by peat in the headwaters and Boulder Clay in the lower reaches. Mainly impervious catchment. The land use is a mixture of improved and rough pasture with some small reservoirs and forest cover. Afforestation in the headwaters, hill pasture below. Open cast mining.	Runoff is diminished by PWS abstractions.
84011	Gryfe at Craigend	85.5	NS4147066386	241470.0	666386.0	55°51'52.2089"N 4°32'05.2945"W	55.8645	-4.5348	Gryfe	Craigend	11.3	SEPA-SW	133073	84	1963-01-01		VA			29.6	true	true	false	true	false	false	false	true	false	false	false	false	false	S	1963-07-01	2023-09-30	3.91	0.065	1996-07-20	1996-07-20	78.47	1999-12-22	1999-12-22	0.301	0.955	1.86	10.14	14.44	0.31	22007	21581	98.064	1963-06-27		71.791	10.5	67.8	164.4	298.0	439.3	1745	1837	0.1224	0.0044	0.6871	0.1385	0.0323	0.1428	0.016	0.5014	0.2845	0.0415	0.0057		0.9943		0.001	0.1605	0.3475	0.61	0.449	0.93	71.8	40.97	50.2	70.6	11.2	25.47	13.71	176	76	0.3	10.8	86.87	0.921	0.872	0.0759	0.0178	0.739	0.408	0.0135	0.761	0.43			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Flows significantly affected by Loch Thom and Gryfe Reservoir in the west.	Velocity area station with cableway (about 20m wide), curving broad-crested masonry weir control (on gentle bend), weir crest 0.24m. 11/96-3/97 weir collapsed; from 1/4/97 weir stabilised (datum changed). Weir repairs completed in Feb 2000.	Weir drowns at high flows. Lb overtopped at 1.1m at the station and 1.6m downstream of the weir. Peak flow rating from current meter gaugings. 1st rating (1963-81) highest spot gauging up to about 0.75 QMED; 2nd (1981-97) up to about 0.7 QMED; 3rd rating (1997-2000) up to about 0.5 QMED; 4th (post 2000) up to 0.9 QMED, simple extrapolation beyond.	Some monthly naturalised flows (1964-74).	Wet, responsive upland catchment draining from Duchal Moor. Geology: Carboniferous basaltic lavas; isolated pockets of Boulder Clay in valleys. Extensive cover of raised beach deposits W of gauging site. Land use: predominantly grazing, some forestry. Urban development along valley. No significant catchment changes known.	Responsive. Significant affect of L. Thom and Gryfe Res. in W. Runoff augmented by compensation flows and spillages from reservoired catchment (11.6 sq.km).
84012	White Cart Water at Hawkhead	234.9	NS4988662918	249886.0	662918.0	55°50'09.8351"N 4°23'54.7347"W	55.83607	-4.39854	White Cart Water	Hawkhead	5.1	SEPA-SW	133093	84	1963-01-01		VA	155.0		3.9	true	true	true	true	false	false	false	true	false	false	true	false	false	S	1963-10-01	2023-09-30	6.61	0.148	1995-08-17	1995-08-17	171.4	1994-12-11	1994-12-11	0.778	1.855	3.236	16.51	24.34	0.35	21915	21915	100.0	1963-08-28		104.895	6.1	30.2	154.9	249.4	372.7	1270	1306	0.0928	0.0311	0.5669	0.0426	0.2379	0.1441	0.0535	0.4679	0.0559	0.2609	0.3898	0.0173	0.5929		0.0983	0.0338	0.5801	0.6	0.414	0.927	63.9	38.16	40.6	56.5	9.7	36.66	20.35	146	9	0.25	6.1	236.26	1.064	0.79	0.0827	0.1277	0.843	0.747	0.1277	0.87	0.755	1962..1989		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with complex water utilisation.	Velocity area station; approx. 20m wide section in a straight reach of uniform cross-section. Occasional vandalism.	Major flood defence works have been developed through the White Cart catchment. In the first phase, three flood storage areas were built in the upper catchment. This work started in March 2008 and were completed in Autumn 2010. A second phase of the flood defence involved the construction of flood defence walls along the White Cart in the Southside of Glasgow upstream of Hawkhead Gauging Station. This work started in January 2009 and was completed in October 2011.	Complex water utilisation; some monthly naturalised flows available (1963-74). Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Predominantly lowland catchment. Carboniferous rocks (basalt in the headwaters) dominate; greater than half overlain by Boulder Clay. Much of the catchment is open pasture (with several small lochs) but the northern part is heavily urbanised (Glasgow); some forestry. Notable floodplains. Development of East Kilbride and Newton Mearns (suburban development). Flood prevention scheme planned for the future.	Storage in the catchment with complex water utilisation. Urban drainage systems.
84013	Clyde at Daldowie	1903.1	NS6718461676	267184.0	661676.0	55°49'47.9529"N 4°07'19.0141"W	55.82999	-4.12195	Clyde	Daldowie	7.5	SEPA-SW	133074	84	1967-01-01		VA	370.0		4.7	true	true	true	true	false	false	false	true	true	true	false	false	true	E	1963-10-01	2023-09-30	48.458	5.881	2022-07-21	2022-07-21	937.7	1994-12-11	1994-12-11	9.542	17.38	28.17	112.8	157.3	0.46	21915	21909	99.973	1963-05-23		428.866	9.9	131.0	251.9	417.6	745.2	1135	1128	0.1242	0.092	0.5488	0.1531	0.0643	0.1657	0.0693	0.5041	0.193	0.0617	0.2429	0.3251	0.432		0.0676	0.1068	0.6147	0.59	0.412	0.958	92.3	41.85	35.8	49.7	9.2	128.37	60.56	265	356	0.06	9.9	1901.23	0.85	0.878	0.0659	0.0221	0.742	0.314	0.0301	0.84	0.345			gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Small influence of hydroelectric scheme at New Lanark.	Velocity area station with cableway; approx. 50m wide section. Lowest on the Clyde.	Natural channel control. Well calibrated. Bypassing of flow can occur on right bank behind station hut at floods above 3.5m. These flows are occasionally gauged from the ramp/walkway. Occasional vandalism and problems with woody debris. There is a very large weir at Carmyle approximately 2.1km downstream from Daldowie that will likely act as a control at high flows at least. The weir has a rectangular notch where a sluice gate would have been, but is now permantly open. The piers of an old railway bridge and a tight bend in the river may also be influential in the control during flood events. Multiple peak flow ratings applied across period of record.	Some monthly naturalised flows available (1967-74). Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in August 2024 (WINFAP Files v13).	Large catchment with upland headwaters. Mixed bedrock geology - Ordovician (in the south) to Carboniferous with superficial deposits, mainly Boulder Clay, below the headwaters. Hill pasture is the major land use in the moorland headwaters with some forestry. Mixed farming and urbanisation in the lower valley. In last 5 years, sewage of smaller towns, e.g. East Kilbride, transferred to Daldowie STW.	Some reservoirs in headwaters (Daer Reservoir). Small influence of hydroelectric scheme at New Lanark.
84014	Avon Water at Fairholm	265.5	NS7537351879	275373.0	651879.0	55°44'39.1167"N 3°59'12.5511"W	55.7442	-3.98682	Avon Water	Fairholm	53.9	SEPA-SW	133084	84	1964-01-01		VA	397.0		15.3	true	true	true	true	false	false	false	true	false	false	false	false	false		1964-02-01	2023-09-30	7.935	0.157	1984-08-17	1984-08-17	213.8	1994-12-11	1994-12-11	0.578	1.717	3.424	20.61	31.09	0.28	21792	21760	99.853	1964-01-15		162.681	53.3	162.1	237.8	338.6	474.3	1269	1264	0.179	0.1075	0.5259	0.1476	0.0315	0.2182	0.0353	0.4945	0.2282	0.0216	0.1499	0.174	0.6761		0.0866	0.247	0.5919	0.59	0.376	0.986	62.0	44.0	37.8	53.0	9.2	43.09	23.4	245	37	0.15	53.3	263.07	0.618	0.974	0.0568	0.0056	0.641	0.445	0.0102	0.813	0.495	1963		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the Avon Water.	Velocity area station; approx. 25m wide section in a very straight uniform reach.	Rock platform below a bridge forms the control. All but the highest flows are contained. Two ratings due to a datum shift of 3ft (0.914m) on 01/03/72. The pre 01/03/72 rating is based on gaugings up to 100 cumecs and a modelled out of bank segment has been added. The post 01/03/72 rating is based on gaugings up to 200 cumecs, with a modelled out of bank segment added.	Some monthly naturalised flows (1964-74). Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Predominantly upland catchment. Mostly ORS and Carboniferous formations extensively overlain by superficial deposits; mainly Boulder Clay with peat in the headwaters. Land use hill grazing, moorland, rough and improved pasture, and some forest cover. No significant catchment changes known.	Flashy response. Two small reservoirs in the catchment but flow pattern remains responsive.
84015	Kelvin at Dryfield	235.4	NS6379273914	263792.0	673914.0	55°56'20.1057"N 4°10'55.9805"W	55.93892	-4.18222	Kelvin	Dryfield	31.4	SEPA-SW	133080	84	1965-01-01	1999-12-31	VA	189.5		7.1	true	true	false	true	false	false	false	false	false	false	false	false	false	E	1960-10-01	1999-12-31	6.896	0.338	1986-09-25	1986-09-25	87.96	1994-12-12	1994-12-12	1.218	2.647	4.232	15.68	21.91	0.43	14336	12537	87.451	1947-01-01	1998-07-01	61.566	35.2	54.1	90.7	394.1	577.4	1264	1256	0.0907	0.0251	0.6287	0.0966	0.1239	0.1701	0.0768	0.4592	0.1496	0.1348	0.678	0.0927	0.2293		0.0477	0.0853	0.7452	0.58	0.39	0.963	80.5	41.34	37.2	51.1	9.1	26.34	12.7	148	183	0.11	35.2	237.01	1.162	0.808	0.1085	0.0477	0.719	0.818	0.0577	0.82	0.908	1946..2005	1998-07-01..2005-12-30	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in the low lying central valley of Scotland. Bypassing occurs in largest events.	Velocity area station; approx. 30m wide river section. Recorder sited in straight even reach where erosion has made banks very steep. The river was canalised during last war and floodbanks made on both banks from dredged material. Cableway installed in 1960 so no high measurements prior to this date. From July 1998 maintained as level only station for flood warning purposes.	The section is affected by weed growth and requires constant attention. Peak flow ratings derived from current meter gaugings up to 3.5m (about 1.1 QMED), simple extrapolation beyond. Bypassing at the very highest flows is a significant problem with the rating.	Bypassing occurs in largest events (e.g. Sep 1985, Dec 1994), overtopping at both banks. Flows rejected from July 1998 because of the maintainance of the station as level only for flood warning purposes. Via correlation with the downstream gauge 84001 the highest recorded event is greatly underestimated at Dryfield.	Catchment in the low lying central valley of Scotland. Upland catchments drain from the Campsie Fells. Millstone Grit and coal bearing rocks of Carboniferous age overlain by extensive Boulder Clay and sand and gravels deposits. Mixed land use including farming, forestry, urban development and open cast mining. Flood prevention schemes along the river at Kirkintilloch.	The river was canalised during the last war downstream of Kilsyth. The Forth and Clyde canal is influenced by feeder reservoirs at low flow.
84016	Luggie Water at Condorrat	33.9	NS7391772559	273917.0	672559.0	55°55'46.2542"N 4°01'10.5734"W	55.92952	-4.0196	Luggie Water	Condorrat	68.0	SEPA-SW	133072	84	1966-01-01		CB	32.0		13.7	true	true	false	true	false	false	false	true	true	false	false	false	false	N	1966-10-01	2023-09-30	0.842	0.082	1984-08-25	1984-08-25	37.03	1994-12-11	1994-12-11	0.144	0.285	0.457	1.914	2.804	0.41	20819	20394	97.959	1968-03-01		17.294	68.6	89.1	139.6	191.5	224.2	1060	1089	0.105	0.0616	0.5555	0.1038	0.1348	0.1577	0.1033	0.5016	0.1163	0.1169	0.5642	0.4358				0.0827	0.9173	0.58	0.327	0.995	56.0	41.41	35.1	46.2	8.8	13.26	5.81	139	306	0.26	68.6	35.34	0.426	0.955	0.0528	0.0366	0.665	0.537	0.0659	0.814	0.602	1967..1996	1967-10-01..1997-10-01	gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a catchment with significant urban development.	Velocity area approx. 8m wide section with compound broad-crested weir, central low flow notch, about 8m wide. Cableway and weir installed in March 1968. Occasional vandalism.	Bypassing occurs at the very highest flows (e.g. Dec 1994). Once the weir drowns out, the higher flows will be influenced by a wooden footbridge downstream that has a flat bottom at bank level. This footbridge has been built sometime in the period of record. Before the construction of the footbridge the higher floods will have been controlled by the humpback stone road bridge further downstream. Peak flow ratings derived from current meter gaugings up to 1.5m (about 0.9 QMED), simple extrapolation beyond. Gauging evidence shows a large rating shift that has been assigned an arbitrary date of 01/01/98. A review of the ratings and available station records highlighted some historic operational issues at the site such as slumping of the ramp gauge and poor quality gaugings.	Although the site has been operational since 17/11/62, SEPA does not hold data prior to March 1968 and a note in the records suggest the pre 1968 data was of poor quality. Peak flow data rejected pre-1998 due to issues with rating derivation described under 'Hydrometry'.	Lowland catchment. Predominantly Coal Measures with intrusive basalt overlain extensively by Boulder Clay, some peat in the headwaters. Much of the catchment is agricultural in character with significant urban development in the north (Cumbernauld), and some forestry. No controlled storages but significant local depressions and boggy areas. Housing development encroaching on right bank floodplain d/s.	No abstractions in catchment. Minor influences at low flows from open cast mining. The deep coal mines were closed prior to station opening.
84017	Black Cart Water at Milliken Park	103.1	NS4112362024	241123.0	662024.0	55°49'30.8444"N 4°32'16.0400"W	55.82523	-4.53779	Black Cart Water	Milliken Park	24.8	SEPA-SW	133112	84	1967-01-01		VA	47.0		19.0	true	true	true	true	false	false	false	true	false	false	false	false	false	S	1967-12-01	2023-09-30	4.749	0.041	2002-10-01	2002-10-01	95.8	1994-12-11	1994-12-11	0.42	1.371	2.833	11.85	15.67	0.38	20393	20393	100.0	1967-12-04		33.72	21.5	39.5	146.1	369.8	520.4	1755	1790	0.0596	0.0078	0.6477	0.2046	0.0466	0.1207	0.0413	0.4948	0.2645	0.0392	0.2199		0.7801			0.1668	0.321	0.61	0.445	0.786	89.3	42.39	50.9	69.9	10.9	24.8	12.15	175	85	0.09	21.5	103.16	0.638	0.863	0.0545	0.0095	0.666	0.57	0.0166	0.826	0.714	1967		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Flows significantly affected by operation of Castle Semple Loch and Barr Loch (fed by Calder Water).	Velocity area station about 27m wide.	Station has informal (dished) concrete low flow control of length 26.52m and natural high flow control. Overtopping of rb can occur when stage exceeds 1m. Peak flow ratings derived from current meter gaugings up to 1.1 m (about QMED), simple extrapolation beyond (stable rating). Problems with winch resulted in bad gaugings in early 1990s. Multiple peak flow ratings across period of record.	Flow control evident on the hydrograph trace, although less obvious post 1980. Monthly naturalised flows available (1967-74). Site was recalibrated back to 2001 during the 2010 review, mainly affecting low flows. Station started operating on 10/01/1967, data reliable from 01/12/1967. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Predominantly lowland, wet, catchment. Principally impervious - Carboniferous basalt and igneous intrusions, overlain by Boulder Clay. Peat in some upland areas, river gravel on floodplains. Rural land use, urbanisation in valley; some forestry. No significant catchment changes known.	Several lochs and reservoirs (e.g. Rowbanks) provide storage, flows sig. affected by operation of Castle Semple Loch and Barr Loch (fed by Calder Water). 75% of the catchment is controlled by Castle Semple Loch.
84018	Clyde at Tulliford Mill	932.6	NS8938840314	289388.0	640314.0	55°38'37.4702"N 3°45'32.4765"W	55.64374	-3.75902	Clyde	Tulliford Mill	173.7	SEPA-SW	133130	84	1968-01-01		VA	587.5		16.3	true	true	true	true	false	false	false	true	false	false	false	false	false	P	1969-01-01	2023-09-30	26.3	1.131	1996-09-20	1996-09-20	447.6	1994-12-12	1994-12-12	4.621	9.883	16.1	59.49	80.89	0.51	19996	19996	100.0	1968-10-01		247.852	174.4	213.8	312.9	472.8	745.2	1225	1205	0.0968	0.066	0.599	0.2147	0.0121	0.1448	0.0708	0.5268	0.2475	0.0053	0.2092	0.1869	0.604		0.0782	0.0618	0.4844	0.61	0.452	0.966	126.2	42.3	38.5	53.3	9.6	84.89	42.73	330	7	0.07	174.4	938.36	0.86	0.785	0.0616	0.0013			0.0024					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station on the River Clyde.	Velocity area station; approx. 60m wide.	Natural open channel control. Weed growth at low flows affects the Clyde from May to September. Banks are likely overtopped during extreme events. A major rating shift is applied on 18/10/2011, Pre 18/10/2011, one flood segment is applied to various lower segments and is gauged up to 2.543m (measured flow of 372.4 cumecs) with simple extrapolation beyond. Post 18/10/2011, a new flood segment is applied to ratings, based on gaugings up to 2.230m (measured flow of 313.9 cumecs) with simple extrapolation beyond. The reason for the change in flood control is currently unknown and the rating change is based purely on gauging evidence.	Monthly naturalised flows available (1969-1974). Flows from Jan 1978 reprocessed in 2013. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	The catchment ranges in height from 180-800m. Mixed geology - ancient sedimentaries (ORS/Ordovician) dominate the headwaters; mostly igneous formations below. Substantial superficial deposits. About one third is cultivated, the remainder is hill grazing and moorland, with some forestry. No significant catchment changes known. Small reservoirs in headwaters.	Catchment includes a number of PWS gathering grounds from which the yield is exported.
84019	North Calder Water at Calderpark	129.8	NS6809762490	268097.0	662490.0	55°50'15.1662"N 4°06'28.0049"W	55.83755	-4.10778	North Calder Water	Calderpark	12.5	SEPA-SW	133069	84	1968-01-01		VA	21.0		8.5	true	true	false	true	false	false	false	true	false	false	false	false	false	RP	1963-01-01	2023-09-30	2.403	0.057	1995-08-10	1995-08-10	93.13	1994-12-11	1994-12-11	0.451	0.898	1.385	5.295	7.744	0.46	22188	22130	99.739	1962-12-18		41.291	13.8	69.2	152.7	228.1	301.4	932	973	0.0814	0.0659	0.434	0.0967	0.2609	0.1343	0.0518	0.3819	0.1207	0.2899	0.0108	0.8847	0.1045		0.0092	0.1332	0.8027	0.58	0.326	0.92	49.9	41.53	31.7	42.7	8.6	38.27	19.15	151	248	0.23	13.8	129.34	0.656	0.877	0.0729	0.105	0.776	0.71	0.1463	0.876	0.711	1971		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in central lowlands east of Glasgow.	Velocity area station; about 12m wide section. The recorder is sited in a river bend, which creates a asymmetrical velocity profile. Outer bank is a steep cliff being undercut by river. The inner bank is quite steep.	The station was built with a broad crested weir in 1962, and then the weir was removed on 09/10/1972. The datum was lowered by 2 feet on 01/04/1972; likely in preparation for the weir removal. There is no rating archived that represents the datum and control change between April and October 1972 and more investigation is required to validate the details in this period. The cableway was removed due to landslip and fallen tree on 24/07/1990. All flows are contained. The post 1972 rating is derived from current meter gaugings up to 1.360m (measured flow of 25.5cumecs) with simple extrapolation beyond.	No POTs between 1968 and 1973 and during this period peak flows are lower than gauged daily flows. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Lies in central lowlands east of Glasgow. Contains several small storage lochs. Sedimentary rocks of Carboniferous age; approx. 95% of which is overlain by superficial deposits. Land use: grassland, forestry, arable lands u/s; extensive urban area d/s. No significant catchment changes known. However changes in sewage discharges and abstraction policy of Scottish Water might have occurred and would have an impact on low flows.	Many artificial influences which mainly impact on low to medium flows. Contains several storage reservoirs for canal supply. Monkland Canal drains through catchment and affects low flows. Water is also exported to Forth & Clyde Canal.
84020	Glazert Water at Milton of Campsie	51.9	NS6564676198	265646.0	676198.0	55°57'35.8088"N 4°09'13.3101"W	55.95995	-4.1537	Glazert Water	Milton of Campsie	38.7	SEPA-SW	133114	84	1968-01-01		VA	137.4			true	true	true	true	false	false	false	true	false	false	false	false	false	E	1968-10-01	2023-09-30	2.108	0.057	1984-08-26	1984-08-26	57.15	1994-12-10	1994-12-10	0.183	0.521	1.036	5.258	7.704	0.29	20088	19803	98.581	1968-09-01		54.245	40.6	75.7	259.8	489.0	577.4	1570	1560	0.0885	0.0041	0.7191	0.1608	0.0197	0.1432	0.0269	0.4141	0.3865	0.0278	0.3224		0.6776		0.0006	0.1569	0.4275	0.59	0.414	0.991	143.7	45.24	42.8	58.9	10.2	15.32	8.2	274	171	0.33	40.6	51.92	0.602	0.72	0.0527	0.009	0.58	0.387	0.0101	0.685	0.46	2000		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a flashy catchment.	Velocity area station.	Broad-crested weir with rectangular low flow notch acts as the control (gaugings confirm the theoretical rating but significant structure erosion evident - especially following the 1990 spates; reconstruction scheduled). Breakpoint of low flow notch is at 0.36m and the structure is drowned out at 1.5m. Peak flow rating derived from current meter gaugings up to 1.5m (0.8 QMED), simple extrapolation beyond. To date all flows contained.	Some monthly naturalised flows available (1970-74).	Catchment topography is >1/3 lowland, <2/3 upland, draining the Campsie Fells. Carboniferous series (principally the Scottish Carboniferous L'st) dominate the bedrock - overlain by mixed superficial deposits. Sparsely populated. Landuse mainly rough pasture and improved pasture in lower parts; some forestry. No significant lochs or storages. No significant catchment changes known.	Flashy response. Minimal effluent returns affecting low flows.
84022	Duneaton at Maidencots	110.3	NS9304625977	293046.0	625977.0	55°30'56.8636"N 3°41'43.3329"W	55.5158	-3.69537	Duneaton	Maidencots	228.3	SEPA-SW	133110	84	1973-01-01		VA	185.6		14.8	true	false	false	false	false	false	true	true	true	true	false	false	true	N	1966-10-01	2023-09-30	3.264	0.13	1984-07-26	1984-07-26	91.74	1994-12-11	1994-12-11	0.434	1.082	1.833	7.601	11.13	0.4	20819	20110	96.594				224.3	267.6	334.5	426.4	591.5	1331	1300	0.1004	0.0197	0.7344	0.1366	0.0019	0.1873	0.0383	0.5531	0.2173	0.004	0.0394	0.4413	0.5193			0.0953	0.5366	0.71	0.369	0.999	118.4	47.8	41.3	57.3	9.9	31.4	15.55	340	67	0.11	224.6	111.67	0.49	0.78	0.0369	0.0			0.0002					gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station in an upland catchment.	Velocity area station.	Ragged rock bar control - considered to be stable and sensitive. Bypassing is unlikely.	Some early flow data available from 1966.	An upland catchment developed mainly on ORS (and older) formations; approx. 50% overlain by Boulder Clay. Mostly grasslands with some forestry.	No significant storages or (current) abstractions.
84023	Bothlin Burn at Auchengeich	35.7	NS6797771609	267977.0	671609.0	55°55'09.8059"N 4°06'50.9072"W	55.91939	-4.11414	Bothlin Burn	Auchengeich	56.7	SEPA-SW	133061	84	1974-09-01		C	36.1			true	false	false	false	false	false	false	true	false	false	false	false	false	E	1973-10-01	2023-09-30	0.725	0.017	2022-08-12	2022-08-13	15.83	1994-12-11	1994-12-11	0.085	0.262	0.429	1.715	2.343	0.47	18262	17974	98.423				55.1	73.0	84.8	94.6	122.3	1002	1029	0.1039	0.0064	0.5462	0.0904	0.2051	0.2473	0.0649	0.4129	0.0405	0.214	0.8112	0.1888				0.1847	0.8126	0.58	0.313	0.912	38.3	39.72	32.0	43.0	8.6	15.75	9.02	84	309	0.02	55.1	34.76	1.338	1.038	0.1367	0.0748	0.67	0.974	0.0942	0.828	0.96			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Crump single-crested weir with flow pattern affected by motorway runoff and STW effluent.	Crump (triangular profile) single-crested weir. No gaugings available to verify rating above structure full. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Flow contained over the full range. There is some siltation behind the weir. Theoretical rating confirmed by low flow gaugings to 0.18m (about 0.11 QMED).	Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	A small undulating catchment, containing three old mining villages, developed on Scottish Carboniferous L'st overlain with superficial deposits (approx. 80% Boulder Clay). Significantly urbanised with grassland, pasture, wetlands and some forestry. Small lochs in the catchment headwaters. Building of the M73 and M80 motorway (1970s).	Sensibly natural regime but motorway (M73) runoff and STW effluent may influence flow pattern.
84024	North Calder Water at Hillend	19.9	NS8281767832	282817.0	667832.0	55°53'21.5488"N 3°52'30.6949"W	55.88932	-3.87519	North Calder Water	Hillend	167.7	SEPA-SW	133095	84	1972-11-01	2010-05-10	FV				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1972-11-01	2010-05-09	0.362	0.003	1988-03-06	1988-03-06	2.659	2008-01-26	2008-01-26	0.114	0.172	0.217	0.839	1.151	0.64	13704	13119	95.731				185.2	196.3	216.3	247.8	284.0	1020	1080	0.1017	0.1233	0.3402	0.2645	0.061	0.1191	0.0281	0.3934	0.3545	0.004		0.6194	0.3806			0.4778	0.3979	0.58	0.374	0.684	42.1	44.78	32.9	43.9	8.8	10.01	3.83	218	255	0.05	191.7	18.64	0.44	0.988	0.0607	0.0011	0.012	0.006	0.0044	0.021	0.012			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station with artificial flows controlled by reservoir releases.	Flat V fibre-glass Crump weir. Station closed May 2010.	Weir susceptible to minor weed growth in summer. Channel flooded out at extreme high flows (very rare).		Bedrock geology mainly Upper and Lower Coal Measures, with some quartz-dolerite intrusions. Significant cover; mainly Boulder Clay and peat. Mixed land use with significant proportion of lochs (>9%).	Flow is totally artificial, being controlled by releases from Hillend Res. (but flood releases via second spillway bypass).
84025	Luggie Water at Oxgang	87.7	NS6653673437	266536.0	673437.0	55°56'07.4598"N 4°08'17.1063"W	55.93541	-4.13809	Luggie Water	Oxgang	38.1	SEPA-SW	133119	84	1974-10-01		VA	77.8			true	false	false	false	false	false	false	true	false	false	false	false	false	N	1975-01-01	2023-09-30	2.257	0.089	2004-06-22	2004-06-22	94.73	1994-12-11	1994-12-11	0.278	0.716	1.187	5.381	7.63	0.41	17805	17775	99.832				38.9	64.4	88.0	167.6	224.2	1047	1068	0.1046	0.0342	0.5603	0.0854	0.1701	0.1953	0.0905	0.463	0.068	0.1737	0.762	0.238			0.0	0.107	0.892	0.58	0.318	0.964	47.7	40.36	33.5	44.9	8.6	22.33	12.01	102	304	0.12	38.9	92.28	0.957	0.936	0.1028	0.059	0.697	0.863	0.0771	0.828	0.922			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a catchment of mixed land use, some urbanisation.	Velocity area station; about 10m wide. Station removed from peak flows dataset in August 2024 (WINFAP Files v13).	Informal Flat V triangular profile weir control. Some sign of weir undercutting in 1992, not thought to affect flows. Two peak flow ratings derived from current meter gaugings, pre- and post-Jan 1980. Both have spot gaugings up to about 0.5 QMED, simple extrapolation beyond.	Most flows contained but some spillage in flood conditions (e.g. Dec 1994).	Catchment is generally lowland and undulating. Predominantly Coal Measures with some dolerite and basalt intrusions extensively overlain by superficial deposits, mainly Boulder Clay. Mixed land use, farming, urban development and open cast mining. Urban development (Cumbernauld) d/s of the station in late 1970s leading to a shift in channel morphology.	Until 2003, sewage discharge to Bothlin Burn joining u/s of station.
84026	Allander Water at Milngavie	32.8	NS5585073559	255850.0	673559.0	55°56'00.2924"N 4°18'32.6256"W	55.93341	-4.30906	Allander Water	Milngavie	33.7	SEPA-SW	133113	84	1974-04-01		FVVA	14.7			true	true	false	true	false	false	false	true	true	false	false	false	false	S	1974-10-01	2023-09-30	1.277	0.011	1977-07-14	1977-07-14	40.77	2006-12-13	2006-12-13	0.12	0.358	0.654	3.139	4.452	0.35	17897	17799	99.452	1972-11-01		34.997	36.6	79.1	176.4	307.3	401.6	1389	1422	0.2781	0.0117	0.5018	0.1074	0.077	0.3463	0.0102	0.347	0.1878	0.086	0.1569		0.8431			0.0079	0.513	0.61	0.368	0.896	101.0	44.17	39.8	54.3	10.1	15.93	8.1	187	109	0.35	36.6	30.65	0.643	0.68	0.0513	0.0397	0.883	0.252	0.0422	0.904	0.268	1972		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. The catchment contains a number of natural and artificial storages but the flow regime remains responsive.	Velocity area station; 8m wide section. Operated by SDD as a level-only station from 1960's until SEPA took over on 01/11/1972.	Station has flat V triangular profile weir for low flow control (installed 1973). Peak flow rating derived from current meter gaugings up to 1.1m (about 0.35 QMED), simple extrapolation beyond.		Hilly catchment developed mostly on Carboniferous formations (basaltic lava and Scottish Carboniferous L'st predominate); overlain by Boulder Clay in the lower catchment. Upland grazing is the main land use; some afforestation and also urban development (Milngavie) near the outfall. No significant catchment changes known.	The catchment contains a number of natural and artificial storages but the flow regime remains responsive.
84027	North Calder Water at Calderbank	60.6	NS7650662603	276506.0	662603.0	55°50'26.8345"N 3°58'25.1380"W	55.84079	-3.97365	North Calder Water	Calderbank	102.7	SEPA-SW	133068	84	1968-08-01	2005-02-18	MIS				true	false	false	false	false	false	false	false	false	false	false	false	false	S	1968-08-01	2004-12-27	1.056	0.0	1978-04-21	1985-05-30	21.99	1994-12-11	1994-12-11	0.023	0.276	0.42	2.774	6.225	0.34	13298	10101	75.959				77.8	128.2	203.8	248.0	301.4	967	1016	0.0766	0.0955	0.4544	0.1463	0.1681	0.1335	0.0449	0.4358	0.1878	0.1585	0.0052	0.7975	0.1973			0.2124	0.6839	0.58	0.335	0.866	55.2	42.75	32.5	43.6	8.7	22.72	10.26	194	244	0.21	78.5	68.52	0.492	1.003	0.0529	0.058	0.751	0.486	0.0825	0.849	0.534			gdf;gmf;nmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station in an urbanised catchment with canal offtake just u/s.	Canal offtake just u/s. Station closed February 2005.	Fibre-glass flume for low flows, broad-crested control for higher flows. Flume is susceptible to blockage by vandals (but checked daily). High flow calibration is poorly defined - further gauging planned.		Urbanised catchment with rough grazing remaining on uplands. Reservoired headwaters. Bedrock principally Upper and Lower Coal Measures overlain by Boulder Clay and localised riverine deposits.
84029	Cander Water at Candermill	24.5	NS7648647024	276486.0	647024.0	55°42'03.1952"N 3°58'00.8703"W	55.70089	-3.96691	Cander Water	Candermill	120.3	SEPA-SW	133070	84	1975-01-01		VA	119.3		34.3	true	false	false	false	false	false	false	true	false	false	false	false	false		1975-10-01	2023-09-30	0.564	0.002	2002-10-03	2002-10-10	18.03	1977-10-30	1977-10-30	0.041	0.122	0.229	1.428	2.265	0.31	17532	17380	99.133				109.7	147.6	194.5	248.3	304.4	1099	1033	0.0687	0.2183	0.6357	0.0051	0.0606	0.0498	0.1322	0.7207	0.0588	0.0374	0.4927	0.5073			0.0303		0.9697	0.58	0.399	0.985	53.0	41.72	32.3	43.6	8.6	11.48	5.91	198	19	0.36	111.1	25.52	0.41	0.958	0.0419	0.0117	0.693	0.704	0.0165	0.85	0.696			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station on a tributary in the River Clyde catchment.		Non-standard Flat V and broad-crested control, no wing walls; current meter calibration. Flood flows spill onto banks. High flow rating under review following road works involving the rb. New rating from 30/07/2002 following July 2002 storm event that redefined channel.	July 2002 storm event redefined channel.	Small, northward draining, rural catchment developed on productive Coal Measures, with ORS (Greywacke Conglomerate) occurring on some hills. Boulder Clay and terrace gravels along the Cander Water. Quarrying activity in S. of catchment.	Responsive flow regime.
84030	White Cart Water at Overlee	106.4	NS5796357501	257963.0	657501.0	55°47'23.5603"N 4°16'00.6723"W	55.78988	-4.26685	White Cart Water	Overlee	45.8	SEPA-SW	133118	84	1980-01-01		MIS				true	false	false	false	false	false	false	true	false	false	false	false	false	S	1981-01-01	2023-09-30	3.586	0.077	1999-08-24	1999-08-24	75.59	1994-12-11	1994-12-11	0.382	0.877	1.581	9.334	13.57	0.31	15613	15488	99.199				47.1	123.8	194.0	274.7	372.7	1331	1367	0.1144	0.0669	0.6194	0.0521	0.1252	0.1482	0.0787	0.5186	0.0947	0.147	0.2591		0.7409		0.0474	0.0658	0.6745	0.59	0.366	0.955	64.2	42.14	41.9	58.6	9.7	18.51	10.55	198	359	0.26	47.6	106.42	0.551	0.933	0.0509	0.0623	0.806	0.786	0.0649	0.85	0.812			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station to the south of Glasgow with rapid urbanisation in the lower catchment.	Thin-plate damaged and removed in 1999.	Rectangular thin-plate low flow notch in a broad-crested (V cross-section) weir. Confirmatory gaugings not yet available for the full flow range. Good fall below weir, flows remain modular.	Poor low flow gauging section, reflected in occasional higher flows recorded than at 84012 (e.g. Jun 2010 HIF).	Geology - mostly basaltic lava and Carboniferous L'st overlain with Boulder Clay and river gravels along main river channel. Land use - predominantly grazing but rapid urbanisation of lower catchment and upper catchment is becoming forested.	Frequent flooding d/s of the gauge reflects flashy nature of the river. There are several reservoirs and lochs within the catchment.
84031	Watstone Burn at Watstone	5.0	NS7631746957	276317.0	646957.0	55°42'00.8742"N 3°58'10.4357"W	55.70024	-3.96957	Watstone Burn	Watstone	123.6	SEPA-SW		84	1976-01-01	1994	C				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1986-02-01	1993-05-31	0.02	0.001	1986-09-17	1993-03-29	1.344	1991-12-22	1991-12-22	0.002	0.004	0.008	0.033	0.075	0.32	2677	2643	98.73				113.6	137.7	188.6	228.3	242.2	1073	1031	0.0442	0.2199	0.6524		0.0647	0.0261	0.1285	0.7318	0.0207	0.0928	0.5746	0.4254					1.0	0.58	0.349	1.0	50.6	40.92	32.7	44.2	8.5	6.44	3.08	182	32	0.43	113.6	6.04	0.397	1.053	0.049	0.0226	0.753	0.486	0.0315	0.897	0.547			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station opened to study the Burn because of proposed new town at Stonehouse.	Crump weir. Station opened to study the Burn because of proposed new town at Stonehouse. Station closed in 1981, re-opened 1986-93.			Geology: predominantly Carboniferous deposits overlain with Boulder Clay; ORS (Greywacke conglomerate) occurs on some hills. Rural catchment.	No significant abstractions or discharges, however, proportion of runoff diverted out of catchment (due to urban drainage).
84032	Bagabout Burn at Giffnock	4.92	NS5552459581	255524.0	659581.0	55°48'28.1822"N 4°18'24.5562"W	55.80783	-4.30682	Bagabout Burn	Giffnock	28.1	SEPA-SW		84	1984	1997	TP				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1984-01-01	1997-06-30	0.098	0.001	1984-07-16	1994-08-18	2.745	1984-01-12	1984-01-12	0.004	0.019	0.036	0.241	0.424	0.24	4930	2333	47.323				26.0	39.1	60.1	111.6	131.8	1053	1149	0.0649		0.2581	0.0366	0.6239	0.0727	0.0061	0.23		0.6912	0.7224		0.2776				0.8936	0.61	0.313	1.0	49.7	39.66	38.6	52.2	9.2	6.41	2.89	70	351	0.43	26.1	5.15	0.564	0.693	0.0627	0.3696	0.902	0.873	0.3419	0.904	0.822			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station located within Giffnock STW.	Located in Giffnock STW. Station closed.	Rectangular thin-plate weir, overtops at 0.17m.		Small, urban catchment. Bedrock: extrusive igneous rocks overlain with Boulder Clay, and some isolated Upper Limestone outcrops.	No significant abstractions or discharges.
84033	White Cart Water at MacQuisten Bridge	120.0	NS5686361443	256863.0	661443.0	55°49'29.7976"N 4°17'11.2412"W	55.82494	-4.28646	White Cart Water	MacQuisten Bridge	20.4	SEPA-SW	133109	84	1991-03-18	2010-08-04	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1991-04-01	2010-08-03	3.543	0.154	1996-09-21	1996-09-21	91.2	1994-12-11	1994-12-11	0.371	0.931	1.623	8.993	13.3	0.32	7065	7063	99.972				18.0	85.9	182.8	270.3	372.7	1289	1326	0.1125	0.0581	0.5824	0.0501	0.1738	0.1539	0.0717	0.4743	0.0826	0.2065	0.2993	0.0327	0.668		0.0574	0.0616	0.6741	0.59	0.372	0.961	65.2	41.26	41.2	57.1	9.7	25.5	15.94	181	355	0.27	18.0	122.56	0.945	0.81	0.0636	0.0952	0.805	0.661	0.0936	0.86	0.697			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flood warning station on the White Cart Water, closed in August 2010.	Velocity area station with well confined open channel. Station closed August 2010.	Catchment prone to frequent flooding.		Outcrops of Carboniferous Coal Measures and basalts overlain by significant superficial deposits, mainly Boulder Clay. Rural catchment undergoing land use changes: afforestation in upper reaches and rapid urban expansion of East Kilbride and Castlemilk.	Very responsive, natural regime. A number of small PWS reservoirs in upper reaches but have insignificant effect at station.
84035	Kittoch Water at Waterside	16.8	NS5956556202	259565.0	656202.0	55°46'43.2606"N 4°14'26.3619"W	55.77868	-4.24066	Kittoch Water	Waterside	100.4	SEPA-SW	133133	84	1991-02-19		VA				true	true	true	true	false	false	false	true	false	false	false	false	false	N	1991-02-19	2023-09-30	0.474	0.004	2000-07-01	2000-07-23	14.39	1994-12-11	1994-12-11	0.039	0.128	0.222	1.112	1.771	0.31	11912	11907	99.958	1991-02-19		20.128	99.9	137.3	169.6	201.6	214.5	1143	1184	0.0859	0.0027	0.4236	0.0149	0.442	0.1198	0.0781	0.274	0.0105	0.5157	0.6629		0.3371				0.8264	0.58	0.337	0.978	56.9	38.82	37.7	51.6	9.3	9.88	4.72	170	296	0.17	99.9	16.81	0.474	0.994	0.0525	0.2203	0.85	1.3	0.2642	0.876	1.217			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area flood warning station, on the edge of Glasgow. A significant percentage of the catchment drains the large new town of East Kilbridge .	Velocity area station. Flood warning station. Station added to peak flows dataset in September 2019 (WINFAP Files v8).	Multiple peak flow ratings across period of record, based on gaugings.		Carboniferous Coal Measures and outcrops of Basalt extensively overlain by Boulder Clay. Small, rural catchment having undergone rapid land use change since the expansion of East Kilbride in the 1960s.	Very minor impact from sewage works u/s of catchment. The urban drainage system produces misleading water balance.
84037	Douglas Water at Happendon	97.0	NS8556733337	285567.0	633337.0	55°34'48.7131"N 3°49'00.4692"W	55.5802	-3.8168	Douglas Water	Happendon	188.9	SEPA-SW	133092	84	1989-09-14		C	27.7			true	false	false	false	false	false	false	true	false	false	false	false	false	N	1989-09-14	2023-09-30	2.838	0.21	2010-06-27	2010-06-27	60.59	1994-12-11	1994-12-11	0.395	0.901	1.506	6.869	9.603	0.41	12435	12356	99.365				181.2	223.6	308.7	396.7	579.6	1258	1241	0.1354	0.034	0.7195	0.0862	0.0128	0.2312	0.0086	0.5137	0.2372	0.0072	0.1163	0.5677	0.316		0.0654	0.0889	0.6414	0.71	0.386	0.99	109.5	44.11	37.4	55.2	9.3	22.69	12.03	309	35	0.14	181.2	97.58	0.439	0.712	0.0352	0.0012			0.0029					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station in a rural catchment whose high flows should be treated with caution.	Crump weir. All flows contained.	Rating altered as a result of damage to structure during Jan 2010 event. Rating extrapolated above 25 cumecs and higher flows should be treated with caution.	Freezing of stilling well evident Jan, Dec 2010; record HIF in Jan 2010 reflects ice melt.	Carboniferous rocks with local occurrences of Lower ORS, intruded by basaltic and doleritic dykes. Significant superficial deposit cover (mainly Boulder Clay). Rural catchment having undergone some afforestation.	Two small lochs in catchment but flow pattern remains responsive.
84040	Clyde at Abington	251.8	NS9327122756	293271.0	622756.0	55°29'12.8952"N 3°41'26.0459"W	55.48692	-3.69057	Clyde	Abington	418.0	SEPA-SW	322551	84	2005-01-01		VA				false	true	true	true	false	false	false	false	false	false	false	false	false																				2004-11-03		142.586						1605	1540																		0.71	0.379	0.937	183.1	47.91	47.0	64.8	11.0	34.8	17.9	418	7	0.08	231.5	251.81	0.676	0.805	0.0433	0.0007			0.0013					pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station built to improve flood warning in the Clyde catchment.	Velocity area station, the most upstream on the Clyde. Station added to peak flows dataset in August 2021 (WINFAP Files v10).	Station spills into right floodplain after around 2m and then into left floodplain after around 2.8m. Rating based on gaugings up to ~1.6m and thereafter higher flow estimates are informed by velocity indexing from a fixed ADCP and floodplain modelling.		Heavily grazed uplands and heather moor. Large wind farms have been installed in the catchment since the station was built.	Two major reservoirs in the catchment.
85001	Leven at Linnbrane	784.3	NS3940980307	239409.0	680307.0	55°59'19.5765"N 4°34'33.5351"W	55.98877	-4.57598	Leven	Linnbrane	5.3	SEPA-SW	133107	85	1963-01-01		VA	124.6		3.9	true	true	true	true	false	true	false	true	true	false	true	false	false	S	1963-07-01	2023-09-30	45.788	3.307	1984-08-29	1984-08-29	216.7	2006-12-14	2006-12-14	8.762	19.36	44.94	88.47	103.3	0.77	22007	21965	99.809	1962-10-01		124.173	5.4	9.2	197.6	518.5	1120.0	2040	2023	0.1313	0.0036	0.4738	0.2772	0.0083	0.1671	0.0116	0.4496	0.2656	0.0073	0.2235	0.1489	0.6276	0.0001	0.0388	0.0629	0.4249	0.71	0.436	0.681	179.6	44.0	50.3	69.7	10.7	64.99	31.32	238	188	0.13	9.8	786.11	1.232	0.837	0.0549	0.0025			0.0037			1962		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station substantially regulated during summer.	Velocity area station, about 35m wide.	Channel control at outflow from Loch Lomond. No bypassing occurs. Two peak flow ratings for periods pre & post-Jun 1982 due to datum change. From current meter gaugings: pre-1982 up to about QMED, post-1982 up to about 1.2 QMED, simple extrapolation beyond. Stable rating but recalibration for low flows after erosion by 1990 floods.	A problem with the gauging winch was identified, which means that all gaugings between 1991-2000 should be viewed as suspect. Naturalised monthly flows available (1963-74).	Large, wet, upland catchment with mountainous headwaters, often snowy in winter. Bedrock geology dominated by ancient metamorphic formations - overlain by superficial deposits in the west. The land use is rough pasture and moorland u/s, improved pasture d/s, small amount of arable land, some forestry. Several water bodies. The catchment outflow is controlled by Loch Lomond (surface area 71sq.km).	Natural regime until loch outfall control weir built in 1971, now substantially regulated during summer. Barrage does not operate in winter, and does not affect high flows. Three main lochs are located in catchment - Loch Sloy with a hydroelectric power scheme, Loch Lomond with barrage (which may affect flow) and Loch Arklet. All three provide a PWS.
85002	Endrick Water at Gaidrew	219.9	NS4846586588	248465.0	686588.0	56°02'53.1575"N 4°26'04.2189"W	56.0481	-4.43451	Endrick Water	Gaidrew	9.5	SEPA-SW	133086	85	1967-01-01		VA	133.8		10.0	true	true	false	true	false	false	false	true	false	false	false	false	false	P	1963-09-01	2023-09-30	7.731	0.069	2021-07-26	2021-07-26	156.9	2009-11-19	2009-11-19	0.644	1.841	3.4	19.97	29.4	0.3	21945	21882	99.713	1963-01-09		124.192	14.6	50.0	155.2	404.1	577.4	1432	1484	0.1595	0.0096	0.5921	0.2234	0.0079	0.1868	0.0256	0.4974	0.2762	0.0098	0.5483	0.1425	0.3092		0.0713	0.1924	0.5087	0.65	0.454	0.981	108.9	41.56	41.7	56.6	9.9	39.7	16.72	192	319	0.11	14.7	219.07	0.78	0.757	0.0632	0.0008			0.0032			1962		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in an upland rural catchment, draining from the Campsie Fells. Flows affected by export of water from Carron Res. into the Forth system.	Velocity area station, approx. 28m wide.	Natural channel control. Low and medium flows considered reliable but flood discharges are of a lesser accuracy (due to overspill on to the lb floodplain above 3.6m and a curved approach to the measuring reach). Peak flow ratings before and after datum change in May 1981 derived from current meter gaugings. Pre-1981 gaugings up to about 0.7 QMED, post-1981 up to about QMED, simple extrapolation beyond. The rating changed in October 2008 following significant channel scour event where gaugings up to 50cumecs showed considerable deviation from earlier ratings. Multiple peak flow ratings across period of record.	Flows over 60 cumecs should presently be regarded with caution. Some monthly naturalised flows available (1967-74). Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	An upland rural catchment, draining from the Campsie Fells, developed on ORS overlain with Boulder Clay; large tracts of sand and gravel also. Land use: mostly moorland, rough grazing, pasture; forestry and some limited cropland. No significant catchment changes known.	Runoff is diminished by the export of water from Carron Res. into the Forth system.
85003	Falloch at Glen Falloch	80.3	NN3210619470	232106.0	719470.0	56°20'15.8504"N 4°43'03.4871"W	56.33774	-4.71764	Falloch	Glen Falloch	9.5	SEPA-SW	133089	85	1970-01-01		VA				true	true	false	true	false	false	true	true	true	true	true	false	true	N	1970-10-01	2023-09-30	5.994	0.02	1995-08-21	1995-08-21	123.6	1994-12-10	1994-12-10	0.285	1.031	2.204	16.31	24.44	0.16	19358	19261	99.499	1970-10-01		160.178	15.1	199.3	447.4	703.2	1120.0	2768	2847	0.0376		0.3966	0.5565	0.0	0.0239	0.0008	0.6186	0.3552				0.9995	0.0005			0.4537	0.78	0.379	0.988	256.1	49.27	64.0	91.5	12.5	14.6	7.45	446	181	0.14	15.1	79.92	0.46	0.836	0.0285	0.0			0.0			1970		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a very responsive, natural catchment.	Velocity area station, approx. 35m wide.	Long broad-crested weir (with rectangular notch) as low flow control - installed Feb 1975. Damage to part of main crest results in a small discharge bypassing the central notch. Very high flows above 2.4m could bypass station on either side. Peak flow ratings derived from current meter gaugings, simple extrapolation beyond. Ratings reviewed in 2016.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Very wet, mountainous, catchment draining southern slopes of Benn Oss and northern slopes of Beinn a Chroin and Beinn Chabair, often snowy in winter. Developed on ancient metamorphic formations with isolated outcrops of igneous intrusions (impermeable). Peat deposits in upland areas. Small lochans in some headwaters, but have little affect on flows. Land use mainly moorland and rough grazing with small amounts of forestry. Minimal floodplains. No significant catchment changes known.	Very responsive regime. No significant abstractions or discharges.
85004	Luss Water at Luss	35.3	NS3563592880	235635.0	692880.0	56°06'01.2116"N 4°38'38.8431"W	56.10034	-4.64412	Luss Water	Luss	16.2	SEPA-SW	133108	85	1976-04-01		B VA	57.2			true	false	false	false	false	true	false	true	false	true	false	true	true	N	1976-01-01	2023-09-30	2.562	0.025	2023-06-15	2023-06-15	39.24	1998-02-11	1998-02-11	0.227	0.709	1.362	6.385	8.911	0.29	17440	16667	95.568				15.3	153.5	338.8	573.7	732.6	2430	2341	0.0279		0.6745	0.2935	0.0001	0.0413	0.0019	0.6714	0.2852	0.0002			1.0			0.0005	0.5631	0.74	0.41	1.0	352.4	44.94	54.5	75.0	11.5	12.0	6.15	348	105	0.19	15.3	35.48	0.249	0.962	0.0133	0.0003			0.0001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station near the shore of Loch Lomond with a very responsive, natural regime.	Velocity area station.	Artificial low flow control: broad-crested weir with low flow notch, slight damage to centre section repaired in autumn 1992. Rating validated by gaugings from 0.15 - 5 cumecs, with historical gaugings to c.25 cumecs. However weir is now in poor condition.	Numerous record gaps May 1983 - 1987 due to site access issues. No daily flow data for January - June 2013 due to weir repairs.	A very wet, mountainous catchment developed mainly on Dalradian schists, overlain by Boulder Clay. Land use is mostly grassland.	Very responsive, natural regime.
86001	Little Eachaig at Dalinlongart	30.8	NS1424382016	214243.0	682016.0	55°59'42.0824"N 4°58'48.0776"W	55.99502	-4.98002	Little Eachaig	Dalinlongart	10.1	SEPA-SW	133075	86	1968-01-01	2008-01	VA	83.1		22.5	true	true	false	true	false	false	false	false	false	false	false	false	false	I	1968-07-01	2008-01-12	1.789	0.01	1977-07-14	1977-07-14	29.23	1979-12-07	1979-12-07	0.085	0.363	0.765	4.818	6.887	0.21	14440	14325	99.204	1968-01-01		43.18	11.7	96.1	267.9	478.5	611.4	2362	2341	0.4854		0.191	0.3167	0.0034	0.5178		0.225	0.2555	0.0017			1.0		0.0014		0.2419	0.71	0.393	1.0	277.7	47.17	55.5	75.5	11.9	9.88	5.04	274	69	0.11	11.8	31.83	0.42	0.923	0.0268	0.0			0.0005					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in a compact, steep, mountainous catchment with a very responsive flow regime.	Velocity area station; approx. 17m wide. Cableway on site until 1988.	Compound artificial control (low flow notch, broad-crested flanks). At high flows weir is drowned and control is natural channel. All flows contained to date. Peak flow ratings derived using meter gaugings up to 0.8m (about 0.3 QMED), simple extrapolation beyond. Based on cableway spot gaugings up to 1988.		A compact, steep, mountainous catchment, often snowy in winter - very wet - developed on ancient metamorphic formations; overlain by limited superficial deposits. Landuse mainly forest and moorland. Minimal floodplains. No significant catchment changes known, however ongoing forestry operations in catchment.	Natural flow regime but catchwaters divert a small runoff volume to Loch Tarsan. Very responsive flow regime. There are also some minor industrial and agricultural abstractions.
86002	Eachaig at Eckford	139.9	NS1393084319	213930.0	684319.0	56°00'56.0345"N 4°59'11.8593"W	56.01557	-4.98663	Eachaig	Eckford	5.8	SEPA-SW	133082	86	1968-01-01	1998-05-31	VA	101.3		14.3	true	true	true	true	false	false	false	false	false	false	false	false	false	SP	1968-10-01	1998-05-31	11.735	0.241	1977-06-29	1977-06-29	118.9	1993-01-16	1993-01-16	0.921	4.157	7.58	27.9	35.58	0.39	10835	10490	96.816	1968-03-01	1998-06-30	80.978	7.6	58.9	308.2	524.9	775.8	2578	2470	0.3667		0.3837	0.211	0.0043	0.4877	0.0017	0.2521	0.2262	0.0017			1.0		0.0141		0.358	0.75	0.38	0.836	302.9	48.89	54.1	77.5	11.6	29.96	15.14	298	238	0.09	7.6	138.67	0.602	0.802	0.0328	0.0			0.0					gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Loch Eck dominates catchment.	Velocity area station, about 28m wide. Station closed 31/05/98.	Riffle control for low to medium flows. Natural channel control at high flows. All but major floods were contained within the channel, but some bypassing on lb. The river channel at the station had been significantly changing during the 1980s. Apparently material had been dumped into the channel u/s to reinforce the river adjacent to a caravan site. This was thought to have caused erosion of the far bank at the station. Peak flow ratings derived using current meter gaugings up to 1.7m (0.8 QMED), simple extrapolation beyond. Ratings applied only until July 1991 due to unreliable data thereafter.	1990s flows under review. Some monthly naturalised flows available (1970-74).	A very wet (mean rainfall may be underestimated), steep-sided, mountainous catchment developed on ancient metamorphic formations - some overlying superficial deposits. Mainly moorland with significant commercial forestry. Loch Eck dominates catchment. No significant catchment changes known.	The catchment contains Loch Eck, a major PWS reservoir.
88001	Carradale at Dippen	58.5	NR7972737673	179727.0	637673.0	55°34'57.8945"N 5°29'47.4851"W	55.58275	-5.49652	Carradale	Dippen	8.7	SEPA-SW	133077	88	1995-10-01		US				true	false	false	false	false	false	false	true	false	false	false	false	false		1995-10-02	2023-09-30	2.536	0.002	2010-06-18	2010-06-18	58.64	2014-11-06	2014-11-06	0.143	0.599	1.221	6.557	9.652	0.24	10226	10151	99.267				3.2	58.6	193.6	298.1	420.2	1709	1819	0.6898		0.0988	0.2229		0.6256	0.004	0.1153	0.2627	0.0022			0.9941	0.0059			0.4564	0.62	0.292	0.989	154.3	54.1	42.6	57.7	10.5	21.93	11.86	186	74	0.12	3.2	58.84	0.591	0.748	0.0435	0.0002			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station on the Carradale Water draining into Kilbrannan Sound.	Velocity area station with natural control.	Natural control. Rating in use from Oct 1995 - 01/12/2007 was based on ultrasonic time-of-flight high flow gaugings between 1996-2003. Recalibration in 2009 (due to drift in low flows) suggested rating shift around 2000; new rating was thus created and has been applied from December 2007. Data from 2000-2007 are therefore based on older rating despite possible shift. Both ratings are suspect at high flows (probable underestimation) but the reason is unknown; more gaugings are required.		Low-lying catchment predominantly forested (~70%) with impermeable bedrock.	Responsive catchment.
89002	Linne nam Beathach at Victoria Bridge	50.5	NN2709942193	227099.0	742193.0	56°32'23.4015"N 4°48'48.8185"W	56.53983	-4.81356	Linne nam Beathach	Victoria Bridge	168.3	SEPA-SW	133131	89	1980-01-01		VA				true	false	false	false	false	false	false	true	false	true	false	false	true	N	1981-10-01	2023-09-30	4.697	0.009	1996-07-21	1996-07-21	127.9	1992-01-02	1992-01-02	0.202	0.784	1.938	12.08	18.37	0.16	15340	15162	98.84				169.2	220.5	396.6	748.1	1082.3	2899	2956	0.0726	0.0017	0.4905	0.3999	0.0037	0.0718		0.5503	0.3692				1.0				0.5426	0.79	0.384	0.92	275.2	49.44	71.7	109.6	13.2	13.83	7.53	437	148	0.26	169.7	49.85	0.986	0.711	0.0512	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station in a very wet, rural, upland catchment draining into Loch Tulla.	Velocity area with a spillway crested weir. Initially installed as part of HEP programme.	Calibration good at low flows.		Very wet, rural, upland catchment draining to Loch Tulla. Dalradian metamorphics with igneous extrusions; over half overlain by Boulder Clay. Moderate forest cover. A couple of small lochs in the catchment.	No artificial influences on the flow regime.
89003	Orchy at Glen Orchy	251.2	NN2425931917	224259.0	731917.0	56°26'47.6732"N 4°51'09.8982"W	56.44658	-4.85275	Orchy	Glen Orchy	69.4	SEPA-SW	133087	89	1977-01-01		VA				true	false	false	false	false	false	false	true	true	true	true	false	true	N	1977-01-01	2023-09-30	22.631	0.278	1977-07-17	1977-07-17	462.5	1989-02-06	1989-02-06	1.479	5.245	8.994	58.97	90.82	0.22	17074	16869	98.799				69.6	188.5	365.6	706.8	1082.3	2618	2713	0.1049	0.0046	0.3963	0.4618	0.0017	0.1334	0.0008	0.4692	0.3827	0.0006			0.9541	0.0459	0.0081	0.0091	0.6355	0.79	0.359	0.892	252.3	51.83	64.5	94.8	12.3	34.9	18.43	408	167	0.01	69.6	249.92	1.132	0.923	0.0553	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station u/s of the confluence with the River Lochy, initially installed as part of a HEP programme.	Velocity area station with low flow control (broad-crested weir). Initially installed as part of HEP programme.	All but very high flows contained. Calibration does not extend to highest flows - may result in overestimation of runoff.		Very wet, upland, steep, and rural catchment with some forest. Predominantly metamorphic rocks with local occurrences of Dalradian L'st; over 60% overlain by Boulder Clay.	Very responsive natural flow regime.
89004	Strae at Glen Strae	36.2	NN1503329930	215033.0	729930.0	56°25'30.7958"N 5°00'02.8653"W	56.42522	-5.0008	Strae	Glen Strae	45.4	SEPA-SW	133088	89	1977-01-01		B				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1978-11-01	2023-09-30	2.99	0.027	2023-06-16	2023-06-16	45.99	1998-02-11	1998-02-11	0.178	0.594	1.408	7.875	10.9	0.19	16405	15872	96.751				42.3	116.6	338.4	611.8	985.5	2941	2777	0.0648	0.0105	0.605	0.3052	0.0076	0.0434		0.4735	0.4819				1.0				0.4893	0.79	0.361	0.995	327.7	52.15	65.0	94.8	12.8	13.07	6.57	348	230	0.07	48.9	36.62	1.143	0.731	0.0437	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound broad crested spillway weir, initially installed as part of Loch Awe HEP programme.	Compound broad crested spillway weir, about 8m wide. Initially installed as part of Loch Awe HEP programme. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	To date all flows contained. Rocks which stand above bed level immediately d/s of the weir are likely to result in rapid drowning of the weir in floods. Low flow ratings derived using meter gaugings up to 0.7m (about 0.2 QMED). High flow rating unconfirmed. Medium to high flow rating taken from theoretical rating inherited from HEP (which was the first edition rating for the site).	The nominal 'normal maximum' flood is 144.7cumecs.	A very wet, mountainous, often snowy in winter, linear catchment draining to Loch Awe. Bedrock geology: predominantly Dalradian metamorphics with local occurrences of Dalradian L'st. Almost half the catchment overlain by Boulder Clay. Landuse predominantly rough grazing; some woodland cover. No significant catchment changes known.	Flashy response. No significant artificial effects on the flow regime during the early record. Generally natural regime. Possibly some water abstraction.
89005	Lochy at Inverlochy	47.7	NN1969227471	219692.0	727471.0	56°24'17.8593"N 4°55'25.2115"W	56.40496	-4.92367	Lochy	Inverlochy	56.8	SEPA-SW	133097	89	1978-01-01		B			41.5	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1978-10-01	2023-09-30	4.691	0.033	2023-06-16	2023-06-16	190.8	2006-12-13	2006-12-13	0.274	0.864	1.79	11.37	17.29	0.19	16436	16333	99.373				53.2	214.0	410.1	686.3	1112.3	2670	2883	0.3455	0.0005	0.2619	0.3642	0.0007	0.441	0.0011	0.3221	0.2301	0.0027			1.0				0.4329	0.79	0.366	0.981	298.7	51.73	65.6	92.4	12.9	18.05	8.79	425	262	0.15	56.8	47.04	0.851	0.92	0.0394	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station u/s of the confluence with the River Orchy, initially installed as part of a HEP programme.	Velocity area station with low flow control (broad-crested weir). Initially installed as part of HEP programme.	Rocky bed makes gauging difficult, particularly at low flows, reducing rating confidence.		Linear catchment draining westward from Lochan na Bi. Predominantly Dalradian metamorphics with local outcrops of Middle ORS. Upland rural catchment with forested slopes.
89006	Avich at Barnaline Lodge	32.1	NM9714313972	197143.0	713972.0	56°16'29.0601"N 5°16'40.9755"W	56.27474	-5.27805	Avich	Barnaline Lodge	50.9	SEPA-SW	133063	89	1980-01-01		CB				true	false	false	false	false	false	false	true	false	false	false	false	false	S	1980-08-01	2023-09-30	1.949	0.055	2021-08-03	2021-08-04	16.65	1998-02-12	1998-02-12	0.255	0.837	1.488	4.26	5.122	0.51	15766	15587	98.865				48.8	92.5	193.4	312.5	431.6	2226	2341	0.5455		0.1962	0.1435		0.5824	0.0044	0.1555	0.1491				1.0				0.1113	0.75	0.303	0.678	180.2	53.84	56.9	78.2	12.4	10.81	5.86	199	119	0.23	48.8	32.41	0.4	1.045	0.0253	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station d/s of Loch Avich and u/s of Loch Awe, initially installed as part of a HEP programme.	Compound weir: broad crest low flow notch set in level rounded crest weir with wing walls. Initially installed as part of HEP programme.	Relatively few gaugings have been taken and all at low flows, down to c.0.3 cumecs. Only a single rating has ever been used and generally low flows fit the rating well; accuracy lost progressively with floods above main crest.		Predominantly Dalradian metamorphics with intrusive and extrusive igneous outcrops. Forested catchment (>50%) draining into Loch Awe. Catchment dominated by presence of Loch Avich approx. 2km u/s.
89007	Abhainn a' Bhealaich at Braevallich	24.1	NM9570607536	195706.0	707536.0	56°12'59.0239"N 5°17'46.4873"W	56.2164	-5.29625	Abhainn a' Bhealaich	Braevallich	46.1	SEPA-SW	133065	89	1981-01-01		CB			9.8	true	false	false	false	false	false	false	true	false	false	false	false	false	N	1981-10-01	2023-09-30	1.456	0.014	2021-08-03	2021-08-03	48.37	1991-04-07	1991-04-07	0.093	0.283	0.618	3.778	5.338	0.21	15340	15194	99.048				47.3	230.4	337.6	429.5	511.6	2485	2489	0.6051		0.1712	0.2056		0.6833	0.0009	0.1845	0.1142				1.0		0.0116		0.4345	0.75	0.302	0.923	128.6	52.77	56.2	77.4	12.6	9.57	5.19	327	297	0.26	48.5	23.55	0.696	0.978	0.0426	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station in a steep catchment draining into Loch Awe.	Compound weir. All but highest flows contained. Initially installed as part of HEP programme. HEP station installed November 2005 with turbine flow bypassing the station.	Low flows measured over a broad crest notch; high flows over a long rounded crest with decreasing accuracy. No gaugings have been taken above 2 cumecs and high flows should be therefore treated with a degree of caution.	Apr-Sept 1991 flows and runoff are anomalously high and should be treated with caution. The bypassed flow is accounted for in the flow record except for Aug 2007 - Mar 2009, where offtake data unavailable.	Predominantly Dalradian metamorphics with igneous intrusions; approx. 40% overlain by Boulder Clay. A steep catchment draining into Loch Awe. One of the most afforested UK catchments (>60%).	No other artificial effects on flow regime.
89008	Eas Daimh at Eas Daimh	4.5	NN2388627602	223886.0	727602.0	56°24'27.7877"N 4°51'21.1915"W	56.40772	-4.85589	Eas Daimh	Eas Daimh	184.7	SEPA-SW	133081	89	1981-01-01		C				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1981-08-01	2023-09-30	0.456	0.001	1984-08-26	1992-05-26	7.226	2006-12-13	2006-12-13	0.05	0.147	0.256	1.111	1.523	0.29	15401	10693	69.431				183.9	319.5	521.0	828.8	1112.3	2739	3120	0.2662		0.0683	0.5809		0.2815		0.3805	0.338				1.0				0.0372	0.79	0.377	1.0	395.6	54.48	66.6	94.0	13.5	3.68	2.15	544	298	0.43	184.7	5.0	0.085	0.511	0.0065	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station with a small upland catchment.	Crump weir (originally installed for research purposes, now operated by SEPA).	Good low flow calibration. Access problems create difficulties in establishing medium and high flow rating; accuracy at high flows considered poor.	Missing data 25/08/14 - 08/20/2014 due to weir construction work.	A wet, mountainous, catchment developed largely on Dalradian metamorphics (mainly schists, some slate and phyllite). Peat in upland areas. Small upland catchment, partially forested.	A very responsive, natural regime - no abstractions or loch storage (but snow pack storage can be considerable).
89009	Eas a' Ghaill at Succoth	9.7	NN2064926481	220649.0	726481.0	56°23'47.1929"N 4°54'27.0200"W	56.39644	-4.90751	Eas a' Ghaill	Succoth	129.7	SEPA-SW		89	1981-01-01	1993-05	C				true	false	false	false	false	false	false	false	false	false	false	false	false	N	1981-09-01	1993-04-30	0.738	0.001	1986-03-08	1992-07-01	10.07	1990-03-10	1990-03-10	0.038	0.15	0.34	1.973	2.743	0.22	4260	4051	95.094				114.4	254.2	464.4	693.6	916.4	2456	3031	0.3411		0.3338	0.3087		0.3896	0.0015	0.3661	0.2388	0.002			1.0				0.3482	0.79	0.382	1.0	259.6	49.66	63.4	88.8	13.0	6.38	3.66	465	296	0.27	115.1	10.3	0.141	0.785	0.008	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A station with a crump weir in a narrow ravine.	Crump weir (installed for research project, now operated by SEPA) in a narrow ravine, all flows contained.	Calibration good at low flows but poor at high.		A wet, mountainous catchment developed on metamorphic formations - mainly Dalradian schists with some phyllite and slate. Peat in upland areas. Small, partially forested upland catchment.	Very responsive, natural regime - no abstractions or storage (excepting seasonal snow cover).
90003	Nevis at Claggan	69.2	NN1159274257	211592.0	774257.0	56°49'17.4383"N 5°05'19.8221"W	56.82151	-5.08884	Nevis	Claggan	3.6	SEPA-NW	116011	90	1982-01-01		VA	108.1		9.2	true	true	true	true	false	true	true	true	true	true	true	true	true	P	1982-10-01	2022-09-30	6.545	0.129	1992-06-12	1992-06-12	131.9	1992-01-02	1992-01-02	0.679	1.855	3.396	16.06	23.08	0.26	14610	14610	100.0	1982-10-01		121.753	5.4	94.1	521.0	888.8	1342.6	2663	2913	0.0779		0.2461	0.5495	0.0017	0.0973	0.0011	0.3328	0.5674	0.001			0.9297	0.0703	0.0031		0.3644	0.81	0.428	0.998	441.8	47.03	94.1	160.8	16.4	21.04	11.91	511	285	0.07	5.4	69.21	0.689	0.619	0.0351	0.0009			0.0006					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station draining the southern slopes of Ben Nevis.	Velocity area station; about 20m wide river section with boulder control.	All flows contained. Difficulty in gauging low flows results in a scattered low flow rating. Ratings derived from current meter gaugings up to 118 cumecs (about 0.95 QMED), simple extrapolation beyond.	Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7).	Wet, steep-sided, high altitude catchment draining southern slopes of Ben Nevis. No storage. Largely impermeable bedrock with approx. 1/3 overlain by superficial deposits. Predominantly Moinian metamorphic with limestone and granitic intrusions. Prolonged winter snow cover. Moorland, rough pasture, and some forestry. No significant catchment changes known.	Very responsive regime. Flows are largely natural although runoff from 6.7 sq.km of the headwaters diverted to Loch Trieg for HEP and further d/s around 5% of Q95 is abstracted for PWS.
91002	Lochy at Camisky	1252.0	NN1445680478	214456.0	780478.0	56°52'42.4896"N 5°02'47.4777"W	56.87847	-5.04652	Lochy	Camisky	12.3	SEPA-NW	234178	91	1980-01-01		VA			4.8	true	false	false	false	false	false	false	true	true	false	true	false	false	SH	1980-08-01	2023-09-30	59.306	1.15	1984-08-27	1984-08-27	1349.0	1992-01-02	1992-01-02	5.873	18.94	33.12	144.9	215.4	0.4	15766	15766	100.0				18.0	128.3	430.3	754.0	1231.3	2151	2191	0.1312	0.0048	0.1671	0.6097	0.0004	0.1362	0.0017	0.3698	0.4464	0.0002		0.0035	0.9828	0.0137	0.0125	0.0574	0.474	0.83	0.385	0.778	242.8	51.13	61.7	92.5	12.5	81.85	35.99	443	326	0.01	19.5	1262.93	0.931	0.924	0.0413	0.0003			0.0001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a rural catchment with a complex regime.	Velocity area station 60m wide.	Fully contained river section with stable gravel bed calibrated to 644 cumecs. Gauged to 105% above QMED.	Staff gauge observations from Feb 1977 to Jul 1979.	Catchment is mainly rough grazing and moorland with some afforestation. Predominantly impermeable bedrock with approx. half overlain by superficial deposits. Significant snow cover during winter.	Abstractions for power generation and flows in Caledonian Canal regularly bypass station. Complex catchment with three large reservoirs controlled for power generation and transfers from the R. Nevis, Mashie and Spey increasing the natural catchment by 17%.
91802	Allt Leachdach at Intake	6.5	NN261781	226100.0	778100.0	56°51'41.9190"N 4°51'14.7126"W	56.86164	-4.85409	Allt Leachdach	Intake	210.0	ALCAN		91	1938-01-01		VN		15.8		false	true	true	true	false	false	false	false	false	false	false	false	false																				1938-12-28	1974-12-31	6.35	274.1	388.6	595.6	885.3	1119.9	2411	2555	0.0435		0.0743	0.7099		0.0178		0.1977	0.7845				1.0				0.4201	0.83	0.397	0.992	407.5	53.32	70.4	105.7	14.4	4.69	2.68	623	1	0.33	279.6	6.52	0.041		0.0031	0.0			0.0			1938..1974		cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound weir measuring flows draining the north-eastern slopes of the Ben Nevis massif.	Compound sharp edge weir with a flat 'V' set in a sharp edge rectangular notch (6.7m long).	No drowning due to the steep gradient d/s, but at low flows the nappe in the V-notch is not aerated. The stilling pool is unlikely to be entirely effective at high flows. Freezing occurs in winter. Theoretical rating.		Mountainous catchment, often snowy in winter. The catchment lies on the north flank of the eastward extension of the Ben Nevis massif. Land cover is rough grazing, pasture and bare rock. No significant catchment changes known.	Natural regime.
92001	Shiel at Shielfoot	256.0	NM6658670178	166586.0	770178.0	56°45'52.3633"N 5°49'15.2130"W	56.76455	-5.82089	Shiel	Shielfoot	3.2	SEPA-NW	234310	92	1995-06-01	2021-09-30	VA	39.5		10.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1995-08-01	2022-09-30	21.208	0.385	2019-05-22	2019-05-22	108.2	1998-02-13	1998-02-13	3.163	10.95	17.3	43.0	51.78	0.62	9923	9923	100.0				3.2	8.3	226.2	572.0	943.1	2724	2769	0.1676		0.2854	0.463		0.177	0.0026	0.4605	0.2786				1.0		0.0134	0.037	0.1983	0.78	0.363	0.701	308.4	53.84	60.3	86.4	12.6	42.04	24.25	259	264	0.09	3.2	255.12	1.637	0.595	0.0579	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a wet mountainous catchment. Natural flow regime. Downgraded to level only end of 2021.	Velocity area station d/s of Loch Sheil.	Cableway present. Gravel bed but relatively stable rating and sensibly a full range station.	Low flow periods during July/Aug 2011 thought to be a true representation of discharge at the time and due to the installation of coffer dam at u/s outlet of Loch Shiel during bridge works.	Wet, mountainous catchment with grassland and some afforestation in the glens. Impermeable bedrock with some superficial deposits.	Natural flow regime.
92002	Allt Coire nan Con at Polloch	8.05	NM7920868812	179208.0	768812.0	56°45'30.4158"N 5°36'49.1894"W	56.75845	-5.61366	Allt Coire nan Con	Polloch	18.8	SEPA-NW	234295	92	1985-08-01		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		1986-05-01	2023-09-30	0.577	0.0	1989-06-20	1989-12-15	7.52	2001-10-29	2001-10-29	0.027	0.115	0.267	1.522	2.176	0.18	13667	13457	98.463	1986-04-01		13.573	11.4	119.5	321.5	584.4	754.7	2570	2538	0.3751		0.2402	0.3847		0.4359		0.3974	0.1646				1.0				0.4252	0.8	0.359	0.989	290.1	53.79	54.6	75.9	12.5	7.41	3.77	331	200	0.5	9.0	8.15	0.176	0.658	0.0086	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station operated from 30/12/1969. Daily flows held from 1986, peak flows from water year 2001.	Pillar Box hut with stilling well. New station planned with cableway in 2018/2019. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	Station gauged to wading limit. The station has a pillar box hut with a stilling well and a natural channel control. Added to the Peak Flows dataset in October 2018 (WINFAP Files v7) with QMED indicative suitability status. This was updated to Pooling suitability in 2024 following a flood measurement in 2023. One peak flow rating across period of record.	The wading limit for gauging is around 0.6m and high flow gaugings have been carried out using ADCP instruments upstream of the station. One peak flow rating is applied through the period of record. A stationary upward looking acoustic instrument was installed for a period in 2023 and this measured a large flood on 21/08/23. This measurement validated the flood rating and improved the confidence in the estimation of higher flood events. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).
92003	Strontian at Ariundle	25.17	NM8238762932	182387.0	762932.0	56°42'25.9992"N 5°33'24.4174"W	56.70722	-5.55678	Strontian	Ariundle	12.0	SEPA-NW	234157	92	2009-01-01		CC	33.1			true	false	false	false	false	false	false	true	false	false	false	false	false		2008-09-12	2023-09-30	2.025	0.001	2021-07-26	2021-07-26	18.76	2009-10-24	2009-10-24	0.088	0.412	0.973	5.601	7.581	0.18	5497	5493	99.927				11.3	84.3	294.6	557.6	879.2	2708	2714	0.1652		0.127	0.7046		0.1248		0.4498	0.423				1.0			0.0372	0.3324	0.81	0.349	0.964	279.1	53.97	66.5	93.0	13.5	10.39	5.92	309	244	0.27	11.3	25.17	0.596	0.669	0.0359	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound crump weir gauging a small flashy catchment.	Compound crump weir with fish pass.	Scottish Water abstraction weir control. Gauged to below QMED. Weir bypassed at ~2.2m. No cableway.		Small catchment, natural to gauging station. Some forestry, rough grazing, moorland and peat bog.	Flashy catchment with no storage.
92004	Aline at Craigendarroch	103.8	NM6976548285	169765.0	748285.0	56°34'11.5313"N 5°44'57.9674"W	56.56987	-5.74944	Aline	Craigendarroch	5.4	SEPA-NW	356326	92	2008-06-11		VA	46.5			true	false	false	false	false	false	false	true	false	false	false	false	false		2008-06-11	2023-09-30	7.583	0.093	2023-06-17	2023-06-17	60.09	2018-10-09	2018-10-09	0.452	2.245	4.803	18.66	23.59	0.3	5590	5590	100.0				4.3	56.4	209.6	431.0	736.8	2303	2337	0.1663		0.2846	0.5273		0.1429	0.0003	0.5865	0.2491				0.9999		0.0139	0.1389	0.0948	0.82	0.327	0.904	191.9	52.57	51.9	73.1	12.3	17.72	9.88	226	229	0.12	4.3	103.8	0.634	0.867	0.0404	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural mountainous catchment.	15m open channel section with gravel control.	No cableway. Gauged to around QMED; high flow gauging carried out by ADCP boat. Good confidence in high flows.		A natural mountainous catchment with few small lochs. Mainly pasture, rough grazing, moorland and peat bog with some forestry.
93001	Carron at New Kelso	137.8	NG9418642885	194186.0	842885.0	57°25'46.3265"N 5°25'47.9972"W	57.42954	-5.43	Carron	New Kelso	5.6	SEPA-NW	234289	93	1979-01-01		VA	239.2		10.0	true	true	false	true	false	true	true	true	true	true	false	true	true	N	1979-01-01	2022-09-30	10.709	0.426	1982-06-24	1982-06-27	203.9	1992-01-02	1992-01-02	1.047	2.8	5.539	25.92	36.81	0.26	15979	15979	100.0	1979-01-01		181.095	6.8	86.7	344.4	645.3	1052.7	2502	2616	0.0701		0.1189	0.7807	0.0001	0.1058	0.0001	0.1761	0.7011	0.001			1.0			0.035	0.5527	0.83	0.406	0.858	291.6	49.12	63.6	89.5	10.7	27.81	15.08	356	200	0.02	6.8	139.21	0.847	0.675	0.0479	0.0001			0.0			1978		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, 70% of catchment drains through Lochs Dughaill and Scaven.	Velocity area station, 40m wide with floodbank on right bank.	Unstable gravel control requires regular calibration of low flow range. Any bypassing in extreme floods will be over 30m wide floodplain on left bank. Adequately gauged to bankfull. To date all flows contained. Ratings derived from current meter gaugings up to 120 cumecs (about 0.6QMED), simple extrapolation beyond. Peak flow rating was revised in 2003 a new single rating for peak flows only was judged to be suitable for whole period of record.		Mountainous headwaters, often snowy in winter. Impermeable bedrock catchment with little superficial deposits. Typical mix of rough grazing and moorland; some forestry and lochs. Increased forestry over last 15 years.	Flows are 100% natural. 70% of catchment drains through Lochs Dughaill and Sgamhain with little additional surface storage. One of the wetter Highland catchments currently gauged.
93002	Ling at Killilan	132.83	NG9387530553	193875.0	830553.0	57°19'07.7459"N 5°25'29.4084"W	57.31882	-5.42484	Ling	Killilan	2.0	SEPA-NW	234252	93	2002-11-04		VA				true	false	false	false	false	false	false	true	false	false	false	false	false		2002-11-04	2023-09-30	9.497	0.181	2023-06-10	2023-06-10	163.7	2005-09-13	2005-09-13	0.554	2.01	4.648	24.59	34.76	0.19	7636	7613	99.699				5.0	194.7	368.6	651.8	1058.8	2671	2568	0.0086		0.1095	0.8717	0.0002	0.0099	0.0002	0.432	0.5506				1.0			0.0163	0.624	0.85	0.35	0.946	262.0	54.74	58.4	81.1	11.3	27.31	14.84	393	251	0.05	5.0	132.83	0.728	0.944	0.0423	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural mountainous catchment.	Open channel section with gravel control; 30m wide section.	Pressure transmitter initially until the full site was built in 2006. No cableway. Control is subject to change during major flooding events. Gauged to below QMED.	Very high coastal tides evident on stage trace when river is low. Stage edited to remove tidal spikes.	A natural mountainous catchment with little storage. Mainly rough grazing, peat bog and moorland with some forestry.	Hydropower schemes on River Attadale divert water out of the catchment.
94001	Ewe at Poolewe	441.1	NG8600280330	186002.0	880330.0	57°45'41.1912"N 5°35'56.6770"W	57.76144	-5.59908	Ewe	Poolewe	4.6	SEPA-NW	234296	94	1970-01-01		VA	62.3		3.4	true	true	true	true	false	true	true	true	true	true	true	true	true	N	1970-10-19	2022-09-30	29.686	1.963	1974-05-18	1974-05-18	227.1	1989-02-06	1989-02-06	5.635	14.18	22.63	62.02	74.47	0.64	18975	18975	100.0	1970-01-01		115.06	4.6	29.0	310.5	583.0	1007.3	2345	2273	0.0369		0.065	0.7718	0.0002	0.0493	0.0005	0.1717	0.6923	0.0001			1.0		0.0052	0.0366	0.461	0.83	0.365	0.665	222.0	50.08	63.7	89.5	10.6	47.42	25.98	311	5	0.1	4.6	441.21	0.611	1.031	0.0381	0.0001			0.0001					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in north west Scotland. Flow regime dominated by Loch Maree.	Velocity area station, 50m wide.	Stable (rock armoured) control which has been modified infrequently resulting in re-calibration of low flows. Right bank has been modified by fisheries proprietors (about 3 times) without affecting the control. To date all flows contained. Rating from current meter gaugings, simple extrapolation beyond. Peak flow rating revised in 2016, with one rating applied across period of record.	Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5). Chart data between 1972 & 1982 was digitised in 2016.	Mountainous headwaters, often snowy in winter. Very wet, mountainous catchment developed largely on ancient metamorphic formations (Lewisian Gneiss and Torridonian Sandstone). About a third overlain by superficial deposit. Typical Highland land use with rough pasture and moorland and some tree cover. No significant catchment changes known.	Slow responding. In excess of 95% of the catchment drains through Loch Maree (surface area 30 sq km) which dominates the flow regime. Low to medium flows from 3% of the upper catchment diverted to Conon hydro scheme.
94003	Kerry at Faich Bhiorach	42.33	NG8191072603	181910.0	872603.0	57°41'24.7502"N 5°39'38.5038"W	57.69021	-5.6607	Kerry	Faich Bhiorach	26.0	SEPA-NW	378262	94	2011-03-01	2021-09-30	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		2011-01-13	2021-09-30	2.402	0.331	2012-06-26	2012-06-26	38.03	2014-08-11	2014-08-11	0.533	1.136	1.936	4.335	5.459	0.6	3914	3910	99.898				25.4	115.5	239.8	509.4	862.3	2350	2308	0.0112		0.0625	0.8504	0.0036	0.0239	0.0003	0.0564	0.8441				1.0				0.2696	0.83	0.311	0.707	203.5	53.7	59.7	79.8	10.5	17.18	8.05	287	1	0.27	25.4	42.33	0.544	0.841	0.037	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a Highland catchment. Regime influenced by power station and impoundment dam. Station downgraded to level only and closed on the NRFA in Sept 2021.	Open channel section around 15m wide with gravel control.	No cableway. Gauged to below QMED.		Highland, mountainous catchment. Moorland, bog and rough grazing. Significant storage in upper catchment at Loch na h-Oidhche.	River heavily modified due to power station and impoundment dam. Agreement for compensation flows to protect freshwater biota - flow regime never extremely low or extremely high. Small Hydro scheme about 2.5km upstream at Loch Bad an Sgalaig.
95001	Inver at Little Assynt	137.5	NC1469324921	214693.0	924921.0	58°10'26.8392"N 5°09'09.3711"W	58.17412	-5.1526	Inver	Little Assynt	60.3	SEPA-NW	234264	95	1977-01-01		VA	40.5		7.0	true	true	true	true	false	true	true	true	false	false	false	false	true	N	1977-08-01	2022-09-30	8.297	0.228	2006-05-23	2006-05-23	58.71	1983-03-06	1983-03-06	1.879	4.37	6.564	16.25	19.88	0.66	16497	16497	100.0	1977-03-03		38.449	63.1	79.8	269.7	541.6	1108.6	2019	2208	0.0015		0.1922	0.7153		0.017		0.2217	0.6841				0.8701	0.1299		0.1191	0.0205	0.77	0.399	0.67	190.3	45.87	57.2	85.5	10.0	26.13	13.4	292	272	0.14	63.1	138.47	0.489	0.987	0.0344	0.0			0.0			1976		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station. Low flow regime can be affected by Loch Assynt gate operation.	Velocity area station, about 30m wide.	Completely contained river section with adequately gauged stable calibration in excess of MAF. Rock control. To date all flows contained. Rating derived from current meter gaugings, simple extrapolation beyond. Peak flow rating was revised in 2003 and a new single rating for peak flows only was judged to be suitable for the whole period of record. Rating reviewed in 2016.	Very low flows in May/June 1998 and April 2002 due to gate operations at Loch Assynt. Full period of record peak flow data reviewed and released in April 2017 (WINFAP Files v5).	Mountainous headwaters, often snowy in winter. Predominantly Lewisian gneiss with Lewisian basic rock intrusions; some superficial deposits. Catchment is rough grazing and moorland with many lochans, of which Loch Assynt dominates (surface area 7.9 sq km). No significant catchment changes known.	Flow regime completely natural except for occasional operation of gates for fisheries purposes which mainly influence low flows. The gates are immediately u/s at outlet to Loch Assynt (surface area: 7.9 sq.km) and can result in very low flows.
95002	Broom at Inverbroom	141.4	NH1840784203	218407.0	884203.0	57°48'37.6955"N 5°03'29.6561"W	57.81047	-5.05824	Broom	Inverbroom	4.6	SEPA-NW	234242	95	1985-01-01	2021-09-30	VA	49.0		19.0	true	false	false	false	false	false	false	false	false	false	false	false	false	H	1985-01-18	2021-09-30	7.219	0.198	2018-07-07	2018-07-07	134.0	1989-02-05	1989-02-05	0.58	1.747	3.507	17.63	26.2	0.24	13405	13405	100.0				4.8	239.7	395.0	663.6	1103.4	2250	2023	0.0388		0.1625	0.7735	0.0006	0.0468		0.2802	0.6539	0.0003			1.0				0.6123	0.77	0.366	0.909	217.1	52.23	54.0	79.7	10.1	23.29	12.98	419	336	0.05	4.9	141.78	0.697	0.816	0.0437	0.0			0.0001					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a typical upland Scottish catchment. Diversions of water in the upper catchment. Station downgraded to level only and closed on the NRFA from Sept 2021.	25m wide river section on gentle bend d/s of bridge.	Floodbank on lb protects a wide cultivated floodplain; heavy tree cover on steep rb. Unstable gravel/cobble control, significant low flow gaugings scatter. Slightly skew velocity in high flows. Adequately calibrated to bankfull (150 cumecs).		Catchment typically Scottish upland except for a very narrow cultivated band on the lower valley floor. Impermeable bedrock with >60% overlain by superficial deposits.	20% of natural catchment diverted (except overflows) via Loch Droma to Conon HEP scheme. 25% of upper catchment drains through Loch a' Bhraoin.
95003	Langwell at Langwell Lodge	30.9	NC1673102604	216731.0	902604.0	57°58'29.3657"N 5°06'02.1241"W	57.97482	-5.10059	Langwell	Langwell Lodge	28.3	SEPA-NW	354621	95	2007-01-01	2021-09-30	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		2007-01-01	2021-09-30	1.631	0.008	2008-06-08	2008-06-08	23.41	2019-01-12	2019-01-12	0.072	0.346	0.92	3.956	5.528	0.24	5387	5387	100.0				25.9	157.7	282.8	392.8	471.8	1978	1900	0.0011		0.3686	0.6064		0.0049		0.2059	0.7753				1.0			0.069	0.2422	0.8	0.313	0.879	153.8	54.29	49.1	68.3	9.5	13.48	7.54	276	214	0.25	25.9	30.9	0.653	0.778	0.0437	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural mountainous catchment. Station downgraded to level only and closed on the NRFA from Sept 2021.	Open channel section 12m wide with gravel control. HEP Scheme installed in upper catchment during 2016 and began operation in January 2017.	Cableway present. Left bank is artificial flood bank.		A natural mountainous catchment with small loch in upper catchment. Mainly rough grazing, peat bog and moorland with some forestry.	HEP Scheme began operation in January 2017 - flows are not natural, particularly at low flows.
95004	Abhainn a'Chnocain at Elphin	10.58	NC2122910988	221229.0	910988.0	58°03'06.6669"N 5°01'51.6486"W	58.05185	-5.03101	Abhainn a'Chnocain	Elphin	138.3	SEPA-NW	368495	95	2008-06-13		VA				true	true	false	true	false	false	false	true	false	false	false	false	false		2008-06-13	2023-09-30	0.54	0.021	2018-06-08	2018-07-03	6.921	2019-01-12	2019-01-12	0.041	0.114	0.236	1.412	2.01	0.22	5588	5588	100.0	2008-10-01		11.307	141.1	171.3	266.4	380.8	514.2	2067	1964			0.3094	0.6844		0.0079		0.2285	0.7499				0.4126	0.5874		0.212	0.0217	0.81	0.467	0.926	121.8	47.18	51.1	73.0	9.8	8.19	4.53	273	24	0.28	141.1	10.57	0.7	0.703	0.049	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural catchment with some small lochs.	The station was built in 2008 to improve the network coverage of catchment typologies. The catchment type was identified as being poorly represented and is a relatively small catchment with a natural flow regime. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	The station is built in a straight reach that runs through flat peat bog after descending from the steeper uplands. The flows are nearly all contained. There is a modern concrete lined road bridge 60m downstream that acts as the control and although higher events will be out of bank at the station, all flows pass though the downstream bridge section. A constant flood segment is applied to all ratings though the period of record. Low end rating shifts are caused by episodes of deposition and erosion of bed material in the reach of the bridge control. No cableway. Gauged to 1.060m with a measured flow of 7.508 cumecs. There is good confidence in flows within the gauged ranged, which is just below the QMED figure.	Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Natural catchment with small lochs. Mountainous with rough grazing, moorland and peat bog. Partly limestone geology.	Natural flow regime.
95005	Laxford at Laxford Bridge	112.97	NC2514646532	225146.0	946532.0	58°22'19.9914"N 4°59'29.2480"W	58.37222	-4.99146	Laxford	Laxford Bridge	8.9	SEPA-NW	234260	95	2004-09-07		VA				true	false	false	false	false	false	false	true	false	false	false	false	false		2004-09-07	2023-09-30	7.214	0.258	2008-06-09	2008-06-09	67.35	2006-10-26	2006-10-26	0.844	3.121	5.628	15.46	19.08	0.45	6963	6963	100.0				14.1	47.2	221.9	512.3	800.8	2256	2115	0.0448		0.3674	0.5074		0.0724	0.0001	0.2916	0.5652				1.0				0.3602	0.85	0.327	0.707	240.1	54.22	57.6	84.3	10.1	23.02	13.0	257	268	0.13	14.5	112.97	0.45	0.868	0.0304	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural mountainous catchment with significant Loch storage.	Open channel section around 20m wide with rock control.	No cableway. Gauged to below QMED. More gaugings are needed to have confidence in high flows.	Occasional very low flows e.g. Feb 2021, occur as a result of a ice.	A natural mountainous catchment with significant storage in Loch More and Loch Stack. Mainly rough grazing, peat bog and moorland with some forestry.
95006	Rhidorroch at Rhidorroch	77.38	NH1542395538	215423.0	895538.0	57°54'39.2808"N 5°07'01.7904"W	57.91091	-5.11716	Rhidorroch	Rhidorroch	78.6	SEPA-NW	356990	95	2007-01-01		VA				true	false	false	false	false	false	false	true	false	false	false	false	false		2007-09-12	2023-09-30	3.767	0.03	2008-06-09	2008-06-09	102.4	2010-12-10	2010-12-10	0.284	1.004	2.029	9.206	12.63	0.28	5863	5574	95.071				77.8	128.5	334.1	600.0	924.0	2043	1937	0.0085		0.215	0.7362		0.0164	0.0002	0.2554	0.7046	0.0002			1.0			0.115	0.4049	0.8	0.355	0.833	185.5	53.61	48.7	67.9	9.9	26.27	13.09	357	347	0.14	79.4	76.89	0.819	0.863	0.0528	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural mountainous catchment with some small lochs.	Open channel section 15m wide located in a narrow rock gorge.	No cableway. Gauged to wading limit with plans to extend using ADCP boat.	Missing data periods (2011, 2015) due to data logger issues.	A natural mountainous catchment with few small lochs. Mainly pasture, rough grazing, moorland and peat bog with some forestry.
96001	Halladale at Halladale	204.6	NC8912556081	289125.0	956081.0	58°28'43.7190"N 3°54'10.8692"W	58.47881	-3.90302	Halladale	Halladale	23.2	SEPA-NW	234232	96	1976-01-01		VA	100.5		17.0	true	true	false	true	false	false	false	true	false	true	true	false	true	N	1976-01-01	2023-09-30	4.967	0.122	1984-08-26	1984-08-26	129.0	1990-08-16	1990-08-16	0.304	1.087	2.324	12.67	18.9	0.27	17440	17440	100.0	1975-01-01		105.526	22.9	110.5	167.4	254.1	568.7	1055	1096	0.1819	0.0001	0.0485	0.7606		0.1843	0.0008	0.1602	0.6447	0.0005			1.0			0.8067	0.1455	0.69	0.297	0.955	55.1	55.66	33.2	46.3	8.2	27.79	13.27	175	1	0.13	23.1	193.72	0.785	0.934	0.0741	0.0			0.0			1974		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in upland catchment. Predominantly natural flows.	Velocity area station, about 20m wide.	Natural control. Adequately gauged to bankfull. Two peak flow ratings both derived from current meter gaugings up to 62 cumecs (about 0.6QMED), simple extrapolation beyond. Peak flow rating was revised in 2003.		Upland catchment. Predominantly Torridonian sandstone with intrusions of metamorphic gneiss. Largely overlain by superficial deposits. Largely moorland with a peat based cover. Extensive afforestation from late 1970s. A few small lochs within the headwaters.	Flows predominantly natural apart from during very dry periods (e.g. Jun 2010) when there may be minor influence from augmentation (for fishery purposes) using sluices on a few small lochs.
96002	Naver at Apigill	477.0	NC7136356765	271363.0	956765.0	58°28'48.2596"N 4°12'27.8973"W	58.48007	-4.20775	Naver	Apigill	5.1	SEPA-NW	234153	96	1977-01-01		VA	30.1		12.0	true	true	true	true	false	true	true	true	true	true	true	true	true	N	1977-06-10	2022-09-30	15.775	0.334	1992-07-04	1992-07-04	313.5	2006-10-26	2006-10-26	1.355	5.141	9.786	37.1	50.16	0.42	16549	16549	100.0	1978-01-01		134.326	7.7	97.7	187.7	402.9	959.0	1485	1383	0.0658		0.2335	0.6674		0.0597	0.0004	0.4341	0.4707	0.0001			1.0		0.0124	0.3281	0.4765	0.73	0.338	0.822	111.7	52.34	40.4	55.3	8.7	56.74	35.02	224	81	0.06	7.8	474.01	0.955	0.911	0.0698	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; approximately half of the catchment drains through Loch Naver.	Velocity area station; 40m wide river section with narrow 6m floodplain on rb but otherwise completely contained.	Gravel control - regular need to reassess low flow rating. To date all flows contained. One peak flow rating across period of record based on gaugings with simple extrapolation beyond.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Mountainous headwaters, often snowy in winter. Impermeable bedrock with a large proportion overlain by superficial deposits. Predominantly Torridonian sandstone with granitic intrusions. Typical Highland mix of rough grazing and moorland; some forestry. No significant catchment changes known.	Flows 98% natural with small interbasin transfer to the Shin hydro-electric scheme. Half of the catchment drains through Loch Naver. Several small high level lochs within catchment in addition to the total surface area of Lochs Coire, Meadie and Naver of 13 sq.km.
96003	Strathy at Strathy Bridge	111.8	NC8358465145	283584.0	965145.0	58°33'31.3971"N 4°00'09.3774"W	58.55872	-4.0026	Strathy	Strathy Bridge	4.5	SEPA-NW	234319	96	1985-01-01		VA	55.9		20.0	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1985-10-18	2023-09-30	2.623	0.098	2003-08-08	2003-08-08	67.89	1990-08-16	1990-08-16	0.202	0.637	1.371	6.356	9.422	0.31	13862	13862	100.0	1985-10-17		46.217	5.4	76.8	159.7	258.3	345.1	1110	1090	0.2033		0.0428	0.7261		0.2591		0.1484	0.5652	0.0007		0.0894	0.9106			0.7997	0.1306	0.6	0.289	0.895	58.1	55.12	32.8	45.7	8.2	30.28	16.64	161	17	0.17	6.6	120.87	0.793	0.953	0.0736	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in north west Scotland.	Velocity area station, about 15m wide.	Stable pitched river bed control with gabion mattress constriction to increase sensitivity (installed on old bridge invert upstream of new road bridge). Bypassing on the right bank during extreme flood events above 1.65m. Adequately gauged to bankfull. Ratings derived from current meter gaugings up to 40 cumecs (about 0.5QMED), simple extrapolation beyond.	Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Upland headwaters. Predominantly Moinian metamorphic with small areas of sandstone and granite. Largely overlain by superficial deposits. Gently sloping peat-covered catchment with moorland and rough pasture. Extensively afforested from the late 1970s.	Natural regime. No significant surface storage but several small hill lochs on a low altitude.
96004	Strathmore at Allnabad	105.0	NC4531442895	245314.0	942895.0	58°20'49.8363"N 4°38'40.6359"W	58.34718	-4.64462	Strathmore	Allnabad	21.9	SEPA-NW	234151	96	1987-12-01		VA	112.4		19.0	true	true	false	true	false	false	false	true	false	false	false	false	false	N	1987-12-01	2023-09-30	7.256	0.134	1995-08-21	1995-08-21	150.9	1992-12-13	1992-12-13	0.454	1.613	3.455	18.3	26.86	0.2	13088	13088	100.0	1987-12-01		198.528	25.3	150.0	306.9	535.3	851.4	2665	2455	0.0127		0.2089	0.7659		0.0127		0.3998	0.5767				1.0			0.0343	0.4187	0.85	0.352	0.938	192.3	55.28	58.3	85.2	10.7	14.36	7.42	325	51	0.07	25.7	105.36	0.638	0.789	0.0414	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station in natural and very responsive catchment. Some headwater storage.	Velocity area station, about 30m wide.	Boulder and gravel control, can be subject to change in big events. Gauged down to 0.15 cumecs. Extreme low flows measured 2 km d/s at a more suitable site for wading (catchment area increase: 7 sq.km). All flows contained to date. Scatter in gaugings through the flow range due to the instability of the control and the turbulence in the gauging pool at medium to high flows. Two peak flow ratings, both derived from current meter gaugings. Maximum gauging for pre-Oct 1994 rating of about 0.7 QMED; for post-Oct 1994 about 0.8QMED; simple extrapolation beyond. Peak flow rating was revised in 2003.		Very wet, rugged, upland catchment with mountainous headwaters, often snowy in winter. Predominantly Moinian metamorphic with schist intrusions. Less than half overlain by superficial deposits. Moorland and rough grazing dominate land use. No significant catchment changes known.	Natural and very responsive flow regime; moderate storage in headwater lochans.
96005	Dionard at Dionard	73.1	NC3568860107	235688.0	960107.0	58°29'53.0630"N 4°49'16.3074"W	58.49807	-4.8212	Dionard	Dionard	17.7	SEPA-NW	234330	96	2005-02-23		VA				true	false	false	false	false	false	false	true	false	false	false	false	false		2005-02-24	2023-09-30	5.293	0.238	2023-06-18	2023-06-18	61.1	2009-02-16	2009-02-16	0.561	1.484	2.959	12.91	17.77	0.26	6793	6752	99.396				11.5	77.1	249.1	573.7	905.0	2249	2341	0.0058		0.1979	0.7576		0.0017	0.0002	0.3139	0.6712				0.9992	0.0008			0.4718	0.85	0.352	0.917	250.7	50.0	57.5	87.1	10.2	24.2	12.5	288	33	0.17	11.5	73.1	0.908	0.743	0.0577	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural mountainous catchment.	Open channel section 20m wide with gravel control.	No cableway. Rating extended using ADCP boat but not high enough to allow accurate extrapolations of high flows.	April 2010 - April 2011 data is suspect due to instrument fault.	A natural mountainous catchment with little storage. Mainly rough grazing, peat bog and moorland with some forestry.
96006	Borgie at Borgie Bridge	138.75	NC6674358652	266743.0	958652.0	58°29'44.2276"N 4°17'16.8332"W	58.49562	-4.28801	Borgie	Borgie Bridge	27.9	SEPA-NW	234334	96	2007-10-25		VA				true	false	false	false	false	false	false	true	false	false	false	false	false		2007-10-26	2023-09-30	3.837	0.17	2018-09-04	2018-09-04	41.27	2010-12-10	2010-12-10	0.748	1.947	3.054	7.77	9.652	0.69	5819	5788	99.467				24.6	112.5	164.2	313.1	759.1	1381	1332	0.137		0.1982	0.5909		0.129		0.3071	0.4882	0.0001			1.0		0.0012	0.1064	0.6306	0.71	0.306	0.661	98.3	53.34	37.3	51.0	8.3	33.37	16.39	189	41	0.11	24.6	138.75	0.668	0.958	0.0582	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural mountainous catchment with significant Loch storage.	Open channel section with croy control, 14m wide.	No cableway. Gauged to around QMED.		A natural mountainous catchment with significant storage in Loch Loyal. Mainly rough grazing, peat bog and moorland with some forestry.
97002	Thurso at Halkirk	412.8	ND1312359561	313123.0	959561.0	58°30'55.7906"N 3°29'34.8155"W	58.5155	-3.493	Thurso	Halkirk	30.2	SEPA-NW	234231	97	1972-01-01		VA	164.1		21.0	true	true	true	true	false	false	false	true	true	false	true	false	false	RP	1972-01-01	2023-09-30	8.953	0.22	1976-08-22	1976-08-29	250.9	2006-10-26	2006-10-26	0.677	3.175	5.209	20.5	29.67	0.46	18901	18901	100.0	1972-01-01		104.956	30.2	69.9	142.3	225.8	434.8	1020	1058	0.1146	0.0136	0.1462	0.6927	0.0009	0.125	0.005	0.1884	0.6488	0.001		0.6382	0.3618		0.003	0.7856	0.1807	0.58	0.292	0.861	37.6	55.23	33.8	46.9	8.4	58.44	29.54	149	39	0.21	30.6	414.48	1.07	0.817	0.1083	0.0001			0.0003			1971		gdf;gmf;nmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station; 50% of the catchment drains through Loch More.	Velocity area station, about 30m wide.	Stable rock bar control. To date all flows contained. Two peak flow ratings across period of record derived from gaugings with extrapolation beyond.	Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8).	Upland headwaters. Mixed bedrock permeability with about 1/3 impermeable, largely overlain by superficial deposits. Blanket peat cover. Land use is moorland and rough pasture with some tree cover. Extensive afforestation of upper catchment from late 1970s. Catchment characterised by small lochs.	50% of catchment drains through Loch More which is used for river regulation (mainly freshets for fishing). Public water supply is taken from Loch Calder - this loch would naturally drain into both the Thurso and Forss catchments, but the outlet to Forss to the North is blocked by a barrage. Average net abstraction from Loch Calder 5% of long-term average runoff.
101001	Eastern Yar at Alverstone Mill	57.5	SZ577857	457700.0	85700.0	50°40'05.2230"N 1°11'05.6349"W	50.66812	-1.1849	Eastern Yar	Alverstone Mill	3.7	EA-SSD	050101002	101	1957-01-01	1997-02-28	TP	6.3	0.8		true	false	false	false	false	false	false	false	false	false	false	false	false	PI	1961-10-01	1997-02-28	0.493	0.049	1971-07-05	1971-07-05	5.923	1971-06-10	1971-06-10	0.126	0.227	0.336	0.887	1.458	0.6	12935	5617	43.425				4.4	21.4	60.4	152.2	242.1	910	845	0.0673	0.4218	0.4077		0.077	0.0629	0.4144	0.4845	0.0042	0.0327	0.7223	0.1334		0.1443	0.1783	0.0034	0.08	0.33	0.743	0.992	84.7	24.3	33.9	45.3	9.4	18.57	9.96	76	7	0.07	8.0	58.43	0.669	0.601	0.0681	0.0176	0.446	0.877	0.0292	0.709	0.892			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station closed in 1997.	Compound thin-plate weir. The archived 'gauged' flows incorporate an adjustment to allow for an upstream public water supply abstraction - the record is thus partially naturalised.			A largely permeable catchment - the Eastern Yar rises as springs on the Chalk of St. Catherine's Down but Lower Greensand dominates the lower catchment. Very rural.
101002	Medina at Shide	29.8	SZ5035988113	450359.0	88113.0	50°41'25.7826"N 1°17'18.3761"W	50.6905	-1.28844	Medina	Shide	10.4	EA-SSD	050301011	101	1965-10-01		US	17.8	7.3	12.9	true	false	false	false	false	false	false	true	false	false	false	false	false	GI	1965-10-01	2023-09-30	0.321	0.028	1976-09-02	1976-09-02	6.13	2003-12-01	2003-12-01	0.091	0.164	0.217	0.611	0.888	0.66	21184	20154	95.138				9.4	26.8	56.8	98.0	193.2	910	841	0.069	0.5114	0.3487		0.0424	0.0632	0.5003	0.4129	0.0044	0.0143	0.7344	0.0857		0.1799	0.0495	0.0199	0.0065	0.33	0.756	0.985	80.0	23.33	35.0	46.1	9.5	12.2	6.28	60	62	0.11	9.4	30.61	0.589	0.89	0.0707	0.0156	0.357	0.826	0.0192	0.578	0.77			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Ultrasonic station (at road bridge) installed in 1996.	Ultrasonic station, superseded trapezoidal critical depth flume, width 2.4m (with broad-crested c/m rated overflow weir for stages > 0.6m). Upper Shide site closed since 2005, replaced by station 300m downstream at Shide; data from either side of transition considered homogeneous.	Springline accretion between the two sites may impact on the homogeneity of the overall flow record. Nov 2000 peak under review. Flow reduced in 1985 by groundwater pumping tests. From 1989, low flows augmented by Isle of Wight Conjunctive Use Scheme; also transfers to the Eastern Yar.	No data Sep-Dec 1996.	Entirely rural, arable catchment. Fairly steep slopes in southern headwaters. Predominantly permeable: Chalk and Lower Greensand with some Gault Clay.	Small abstractions for irrigation.
101003	Lukely Brook at Carisbrooke Mill	16.2	SZ49098862	449090.0	88620.0	50°41'42.5845"N 1°18'22.8033"W	50.69516	-1.30633	Lukely Brook	Carisbrooke Mill	12.6	EA-SSD	050301004	101	1979-01-01		CC	10.5	9.8		true	false	false	false	false	false	false	true	false	false	false	false	false	GI	1980-01-01	2023-09-30	0.121	0.0	1984-09-16	1997-11-02	1.292	2000-12-12	2000-12-12	0.009	0.041	0.077	0.266	0.408	0.85	15979	14543	91.013				12.4	37.9	96.6	164.0	212.9	898	862	0.0808	0.4263	0.4162		0.0559	0.144	0.4247	0.3702	0.0007	0.0603	0.7888	0.0854		0.1257		0.2363		0.33	0.89	0.976	130.2	10.13	35.1	44.9	9.7	9.02	4.93	99	44	0.17	12.8	14.86	0.274	0.501	0.0284	0.0185	0.477	0.192	0.0275	0.808	0.16			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound Crump weir. Site formerly known on National River Flow Archive as Newport.	Compound Crump weir. Total crest width 3.2m (upper crest: 2.4m wide; lower crest: 0.8m wide). Data quality improved since installation of fish pass. Site formerly known on National River Flow Archive as Newport.	Minimum in 1986; 1999 minimum under review.		The Lukely Brook drains the Bowcombe Valley - mostly Chalk with some impervious Tertiary formations near to the catchment outfall. Rural land use, but increasing urban development around Newport.	Groundwater abstractions upstream affect flow regime, water mill immediately downstream.
101004	Eastern Yar at Burnt House	59.6	SZ58288532	458280.0	85320.0	50°39'52.7146"N 1°10'36.3076"W	50.66464	-1.17675	Eastern Yar	Burnt House	7.4	EA-SSD	050101011	101	1982-01-01		FV			50.0	true	false	false	false	false	false	false	true	false	false	false	false	false	PG	1982-10-25	2023-09-30	0.888	0.001	1983-08-10	1984-08-23	7.49	1999-12-26	2016-03-09	0.05	0.138	0.261	2.518	4.76	0.44	14951	14921	99.799				4.4	20.8	59.5	151.4	242.1	910	844	0.0689	0.4187	0.4101		0.0766	0.0655	0.4103	0.486	0.0042	0.0328	0.7256	0.1308		0.1436	0.1748	0.0033	0.0833	0.33	0.743	0.992	84.5	24.29	33.9	45.3	9.4	19.49	10.68	75	6	0.06	7.4	59.58	0.72	0.595	0.073	0.0174	0.44	0.895	0.0291	0.708	0.903			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir, a rural, largely permeable catchment.	Flat V weir, 1:10 cross slope. Limited head for long periods. Peak flows truncated at around 7.9 cumecs.			A largely permeable catchment - the Eastern Yar rises as springs on the Chalk of St. Catherine's Down but Lower Greensand dominates the lower catchment. Very rural.	Runoff reduced by surface and groundwater abstractions. From 1989, low flows augmented as part of the Isle of Wight Conjunctive Use Scheme, but also regular abstraction upstream.
101005	Eastern Yar at Budbridge	22.5	SZ53128352	453120.0	83520.0	50°38'56.2199"N 1°15'00.0442"W	50.64895	-1.25001	Eastern Yar	Budbridge	17.2	EA-SSD	050101012	101	1982-01-01		FV			22.9	true	false	false	false	false	false	false	false	false	false	false	false	false	PGI	1982-04-14	2023-09-30	0.226	0.034	1997-07-23	1997-07-23	5.24	2013-12-23	2013-12-23	0.073	0.108	0.14	0.421	0.647	0.58	15145	15121	99.842				17.2	32.9	84.0	157.2	234.6	916	841	0.0613	0.46	0.3968		0.0494	0.0493	0.4492	0.4647	0.0055	0.031	0.6781	0.2196		0.1024	0.1659	0.0007	0.0793	0.33	0.707	0.996	87.0	26.78	33.0	45.0	9.3	11.76	6.59	92	31	0.12	17.2	24.31	0.436	0.519	0.046	0.0148	0.459	0.742	0.0193	0.694	0.888			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir, runoff reduced by surface and groundwater abstractions.	Flat V weir, cross-slope 1:10, 2.98m wide. Limited head for extended periods. From 1988, low flows augmented as part of the Isle of Wight Conjunctive Use Scheme.	Regularly subject to weed growth.		The Eastern Yar rises on the Chalk of St. Catherine's Down, below the permeable headwaters Upper Greensand and Gault Clay dominate. Very rural, Godshill is the main settlement.	Runoff reduced by surface and groundwater abstractions.
101006	Wroxall Stream at Waightshale	15.8	SZ53688377	453680.0	83770.0	50°39'04.1283"N 1°14'31.4016"W	50.65115	-1.24206	Wroxall Stream	Waightshale	15.7	EA-SSD	050101014	101	1982-01-01	1994-02-20	FV			32.4	true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1982-12-08	1994-02-20	0.137	0.011	1985-04-09	1985-04-09	6.961	1993-10-09	1993-10-09	0.03	0.054	0.075	0.254	0.382	0.46	4093	3744	91.473				16.2	28.0	76.2	185.3	242.1	913	873	0.0906	0.3863	0.4334		0.0672	0.076	0.3223	0.5622	0.0009	0.0381	0.7195	0.145		0.1355	0.1247	0.0107	0.0581	0.33	0.755	0.982	95.5	23.14	33.7	45.2	9.4	8.91	4.77	93	338	0.29	16.5	16.94	0.349	0.433	0.0412	0.0159	0.384	1.034	0.0296	0.71	1.202			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station level-only since 1994, runoff reduced by groundwater abstractions.	Station level-only since 1994. Flat V weir (2.90m wide, cross-slope 1:10). Limited head for extended periods.		Extensive periods of missing flows between July 1992 and December 1995.	A rural catchment trending N-S from the Chalk of St. Boniface Down. Some Upper Greensand and Gault Clay below the headwaters.	Runoff reduced by groundwater abstractions especially after the commissioning of the Isle of Wight Conjunctive Use Scheme (in 1989). Very artificial low flow pattern.
101007	Scotchells Brook at Burnt House	9.2	SZ583852	458300.0	85200.0	50°39'48.8229"N 1°10'35.3569"W	50.66356	-1.17649	Scotchells Brook	Burnt House	7.4	EA-SSD	050101013	101	1982-01-10	1995-12-31	FV			35.0	true	false	false	false	false	false	false	false	false	false	false	false	false	GI	1982-10-01	1995-12-31	0.174	0.005	1984-08-28	1984-08-28	5.91	1993-12-20	1993-12-20	0.015	0.03	0.047	0.307	0.771	0.28	4840	4611	95.269				7.4	11.0	40.6	100.7	231.5	898	850	0.1264	0.3729	0.3163		0.1747	0.1267	0.3348	0.3415	0.0028	0.1942	0.9832			0.0168	0.0812		0.0924	0.33	0.752	1.0	73.1	24.18	35.4	46.7	9.4	6.84	3.73	50	40	0.41	7.4	9.32	0.767	0.473	0.1035	0.1011	0.76	1.189	0.097	0.858	1.089			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station decommissioned, long periods with negligible head.	Station decommissioned. Flat V weir, 1:10 cross slope. Peak flows truncated at just below six cumecs. Long periods with negligible head.			Chalk headwaters thence Greensand and Gault formations (largely impermeable). Land use: agricultural in upper reaches, more varied below (some runoff from Shanklin/Sandown).	Runoff reduced by groundwater abstractions.
102001	Cefni at Bodffordd	21.7	SH4292576857	242925.0	376857.0	53°15'55.3832"N 4°21'23.7292"W	53.26538	-4.35659	Cefni	Bodffordd	34.2	NRW	102001	102	1988-01-01		TP				true	false	false	false	false	false	true	false	true	false	false	false	false		1988-10-10	2023-09-30	0.423	0.002	1990-08-09	1990-08-18	14.16	2021-10-28	2021-10-28	0.019	0.079	0.193	1.01	1.507	0.43	12774	12763	99.914				33.5	55.2	67.8	82.2	104.4	1061	1061	0.0742	0.062	0.8544		0.0041	0.0102	0.0722	0.9137	0.0006	0.0027			1.0				0.9506	0.45	0.448	0.964	29.0	38.78	37.7	48.2	10.6	10.94	6.17	68	157	0.15	33.8	21.01	0.831	0.988	0.1029	0.0011			0.0007					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Weir structure. Domestic property discharges may impact low flows.	Rectangular thin-plate weir.	Weir rated at medium to high flows by current meter. Full range station. Weir susceptible to blockage and accumulation of debris which may affect the intake, particularly in the summer/autumn. Some gravel accumulation and clearance. Domestic property discharges maximum of 1.2 cumecs per day upstream of station; may impact low flows.	Missing data 12-23/09/2009 due to repair work on weir; in-channel work minimal but downstream banks reinforced. Theoretical rating curve applied subsequently.	Typical low-lying Angelsey catchment of impermeable rocks overlain by thick Boulder Clay. Mostly grassland, minor patches of forest and arable.
105001	Snizort at Skeabost	80.55	NG4149648661	141496.0	848661.0	57°27'15.7326"N 6°18'40.4475"W	57.45437	-6.31124	Snizort	Skeabost	12.1	SEPA-NW	234313	105	2001-02-22		VA				true	true	false	true	false	false	false	true	false	false	false	false	false		2001-02-23	2023-09-30	4.583	0.105	2008-06-05	2008-06-05	60.42	2022-11-10	2022-11-10	0.307	1.046	2.361	11.68	16.19	0.24	8255	8255	100.0	2001-02-22		65.53	6.2	53.2	145.6	287.7	436.6	1976	2158	0.2447		0.2275	0.5263		0.2452	0.0007	0.1991	0.5579				1.0			0.666	0.0437	0.76	0.308	0.976	106.6	54.19	51.6	74.1	10.8	21.8	11.61	160	320	0.14	6.2	80.55	0.909	0.771	0.0723	0.0			0.0001					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the only one on the Isle of Skye.	Velocity-area station opened in 2001 as the first representative gauging station on Skye. Station added to peak flows dataset in September 2020 (WINFAP Files v9).	Deep rocky channel with semi-artificial rock control in channel roughly 25m wide. No cableway at site for high flows, gaugings are carried out ~600m upstream. Gauged to around QMED. Multiple peak flow ratings across the period of record.	Dec 2009-Jan 2010 and Dec 2010 flows considered suspect due to extended period of freezing in the stilling well. Full period of record peak flow data reviewed and released in September 2022 (WINFAP Files v11).	80.6 km2 High moor land to 400m, rough pasture and some forestry. Small loch in headwaters 0.5 sq.km. Tertiary geology, mainly ovaline-basalt and dolerite.	Moderately flashy. Small fish farm abstraction, with discharge immediately d/s.
106001	Creed at Creed Bridge	43.4	NB4018732508	140187.0	932508.0	58°12'16.3450"N 6°25'27.2207"W	58.20454	-6.42423	Creed	Creed Bridge	37.0	SEPA-NW	234190	106	1993-03-13		CC			34.0	true	false	false	false	false	false	false	true	false	false	false	false	false	IN	1993-03-13	2023-09-30	1.668	0.015	2008-06-11	2008-06-15	18.83	2000-10-29	2000-10-29	0.103	0.593	1.205	3.74	4.778	0.47	11159	9773	87.58				37.2	67.4	97.5	135.0	276.8	1326	1481	0.0352		0.0669	0.8573		0.0312		0.0068	0.9144				1.0			0.9409		0.7	0.23	0.719	47.1	59.61	34.1	46.2	9.2	18.44	10.33	100	134	0.14	37.2	44.93	0.858	0.926	0.078	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Compound crump weir gauging a mainly natural catchment near Stornoway.	Asymmetrical compound Crump weir - 8.6m main crest with 0.6m low flow crest on left hand side - immediately d/s of sharp right hand bend.	Theoretical rating. Structure capacity: approx. 15 cumecs, overtopped by flood peaks. Levels monitored by pressure transducer - monthly offsets applied, based on dip-flash readings.		Gently-sloping peat-covered (>75%) catchment near Stornoway. Heather moorland developed on ancient metamorphics, mostly Lewisian gneiss. Many lochans in South of the catchment. Some afforestation; current land-use mostly sheep-grazing.	Small fish-hatchery abstraction immediately u/s - can influence low flows (amounts unknown), causing both prolonged periods and single days of low flow - otherwise an entirely natural regime.
106002	Laxdale at Laxdale	10.64	NG0993097086	109930.0	897086.0	57°52'07.3637"N 6°53'36.9206"W	57.86871	-6.89359	Laxdale	Laxdale	12.6	SEPA-NW	356217	106	2007-10-24		VA				true	true	true	true	false	false	false	true	false	false	false	false	false		2007-10-24	2023-09-30	0.697	0.001	2012-06-17	2012-06-20	9.79	2014-08-11	2014-08-11	0.025	0.151	0.359	1.745	2.497	0.18	5821	5746	98.712	2007-10-27		17.448	12.6	55.6	166.9	351.1	462.9	1677	1993			0.0058	0.8903				0.0312	0.9767				1.0				0.4734	0.76	0.31	0.888	177.6	53.36	37.7	51.8	9.5	5.42	3.13	185	227	0.33	12.9	10.64	0.295	0.656	0.0235	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural mountainous catchment on the Isle of Harris.	Open channel section 5m wide with gravel control. Station added to peak flows dataset in September 2020 (WINFAP Files v9).	Flood gauging is challenging at the site due to its remoteness and there being no permanent cableway. However, a flood gauging has was obtained on 17/09/18 using a ADCP boat and temporary cableway set up. The gauged stage was 1.786m and the measured flow was 23.5 cumecs. Although the river was out of bank on the right during this gauging, there is confidence that the measured flow was close to the actual flow. One peak flow rating across the period of record.	Low flows in June 2012 verified by gaugings during the event, therefore thought to be reliable.	A natural mountainous catchment on South Harris with little storage. Mainly rough grazing, peat bog and moorland with some forestry.
106003	Abhainn Roag at Mill Croft	13.81	NF7670134768	76701.0	834768.0	57°17'19.1644"N 7°22'05.9937"W	57.28866	-7.36833	Abhainn Roag	Mill Croft	5.5	SEPA-NW	354623	106	2007-11-05		VA				true	true	false	true	false	false	false	true	false	false	false	false	false		2007-11-05	2023-09-30	0.675	0.018	2019-05-15	2023-06-16	11.69	2017-08-22	2017-08-22	0.043	0.159	0.334	1.741	2.454	0.22	5809	5809	100.0	2007-10-01		16.113	7.9	29.3	104.0	310.0	540.1	1485	1730			0.05	0.9446				0.1569	0.8445				1.0			0.2972	0.0086	0.62	0.333	0.923	158.6	50.52	38.3	50.4	10.4	7.91	4.43	142	290	0.43	7.9	13.81	0.909	0.733	0.0695	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a natural mountainous catchment on South Uist (Outer Hebrides).	Open channel section 7m wide with gravel control. Station added to peak flows dataset in October 2018 (WINFAP Files v7).	No cableway. Gauged to around QMED. One peak flow rating across period of record.		A natural mountainous catchment on North Uist with little storage. Mainly rough grazing, peat bog and moorland with some forestry.
107001	Durkadale at Durkadale	19.03	HY2953225280	329532.0	1025280.0	59°06'30.7014"N 3°13'55.8224"W	59.10853	-3.23217	Durkadale	Durkadale	28.2	SEPA-NW	234207	107	1999-08-01		VA				true	false	false	false	false	false	false	true	false	false	false	false	false	N	1999-08-05	2023-09-30	0.499	0.018	2009-07-16	2009-07-16	5.175	2013-11-03	2013-11-03	0.041	0.128	0.287	1.258	1.684	0.39	8823	8817	99.932				25.8	39.1	98.7	164.0	222.0	1104	1150		0.0126	0.3414	0.645	0.0005		0.0042	0.2493	0.7461	0.0004		1.0				0.5986	0.3128	0.56	0.299	0.975	69.5	52.74	35.0	49.2	7.3	9.42	5.69	99	266	0.29	25.8	19.6	0.0		0.0	0.0001			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, the first opened on Orkney.	Velocity area station installed on Orkney mainland. Record from August 1999. Regarded as a secondary site by SEPA (but first station on Orkney).
108001	Weisdale Burn at Weisdale Mill	12.6	HU39475300	439470.0	1153000.0	60°15'33.5768"N 1°17'18.9747"W	60.25933	-1.2886	Weisdale Burn	Weisdale Mill	9.3	SEPA-NW	116008	108	2002-04-17		VA			15.0	true	false	false	false	false	false	false	true	false	false	false	false	false		2003-01-01	2023-09-30	0.587	0.016	2014-06-30	2014-07-01	38.48	2007-08-20	2007-08-20	0.042	0.123	0.241	1.342	2.14	0.26	7578	7199	94.999				8.1	33.6	95.0	208.4	276.9	1275	1320			0.2644	0.7319	0.0037			0.5331	0.4659	0.0004			1.0			0.547	0.4147	0.52	0.532	0.999	156.7	48.68	33.7	45.3	7.4	9.15	4.65	110	116	0.3	8.1	12.71	0.0		0.0	0.0003			0.0008					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened in 2002 to record data for Shetland.	Velocity area station, opened in 2002 to obtain continuous flow data for Shetland.	Steep banks contain majority of flows. No cableway so high flows extrapolated. Natural control; bed is gravel and small boulders with consistent depth. Weed growth in summer - a second rating curve has been developed to calculate flows in weedy conditions.	Missing data in November 2010 - October 2011 is due to a faulty shaft encoder at the station.	Quartzite and Pelites with some metamorphosed limestone and dolomite. Overlain with peat and till. Mainly moorland and rough pasture.	Fish hatchery nearby abstracts and discharges - amounts unknown.
201002	Fairywater at Dudgeon Bridge	158.4	IH4056275809	240562.0	375809.0	54°37'43.8274"N 7°22'21.7610"W	54.62884	-7.37271	Fairywater	Dudgeon Bridge	61.0	DfIR	201002	201	1971-11-11		VA			17.0	true	true	false	false	true	false	false	false	false	false	false	false	false	N	1971-12-01	2023-09-30	5.368	0.095	1984-07-09	1984-07-09	89.08	2015-11-15	2015-11-15	0.437	1.268	2.5	13.71	20.29	0.3	18932	18567	98.072	1971-11-01		66.784	65.1	74.1	122.3	242.9	413.1	1249	1285	0.0818	0.028	0.7195	0.1556	0.0139	0.1385	0.0189	0.5809	0.262	0.0032					0.0559	0.0186	0.0616	0.62	0.419	0.992	74.4	38.84	33.4	45.0	8.7	26.62	15.19	143	85	0.08	65.1	158.24	1.368	0.823	0.1246	0.0044			0.0006					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened in November 1971.	One of the earliest stations in the NI hydrometric network. A velocity area station comprising a wooden hut housing a stilling well. Main and backup instruments both present using shaft encoders with float and weight. Channel width approximately 15m at station.	Channel too deep to wade gauge at station, but during low flows in-channel gauging is undertaken at road bridge downstream. The last gauging over 10 cumecs was on 07/08/86, the highest gauging flow recorded since this date was on 18/04/96 when the flow was 8.3 cumecs. Rating derived from current meter gaugings.	AMAX1 in November 2015 exceeded the previous long-standing highest flow on record from October 1987. Daily flows from 1977 onwards reprocessed in 2002. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Solid geology - Dalradian schistose sandstone and shale form generally impermeable basement in the south. Much of the area is underlain by Carboniferous, generally indurated conglomerate, Claragh sandstone, mudstone and limestone. Prominent Palaeogene dolerite dykes cross the area. Drift geology - river alluvium overlies glacial sand and gravel deposited on drumlinised glacial till. Rock near surface and post-glacial peat extensive on high ground. Restricted development of river alluvium in valleys. Predominantly grassland with some shrub heath, bog and coniferous woodland. No significant urban development.	Natural regime - no water abstractions or significant returns.
201005	Camowen at Camowen Terrace	276.6	IH4607173048	246071.0	373048.0	54°36'12.8466"N 7°17'16.2734"W	54.60357	-7.28785	Camowen	Camowen Terrace	66.0	DfIR	201005	201	1972-04-28		VA			26.0	true	true	true	true	false	true	true	false	false	false	false	true	false	H	1972-05-01	2023-09-30	6.805	0.001	2013-08-31	2014-07-26	138.3	1987-10-21	1987-10-21	1.019	2.4	4.06	15.3	21.18	0.46	18780	18776	99.979	1972-04-28		89.663	68.6	99.5	151.3	227.8	519.5	1183	1144	0.0308	0.0228	0.784	0.1468	0.0145	0.0603	0.0585	0.6542	0.1943	0.0344					0.0791	0.302	0.4946	0.64	0.514	0.989	64.0	33.87	31.3	41.4	8.5	38.93	22.04	159	232	0.1	68.6	276.38	0.808	0.927	0.0798	0.0212		0.515	0.0034			1971		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in April 1972 as part of the original core network in Northern Ireland. Flow regime impacted since 2011 by HEP downstream.	Velocity-area station with cableway. Masonry hut housing stilling well and cableway winch situated on top of floodbank on left bank. Camowen River is one of two major watercourses flowing through Omagh that join to form the Strule River. Station located c.750m upstream of confluence with Drumragh River. Main and backup instruments present both using shaft encoders with float & weight. Channel width c.22m at station. Channel too deep to wade gauge in all but the very lowest of conditions. Cableway upgraded in 2014.	Informal broad-crested weir c.240m downstream originally constructed for mill use acts as control. Full range of flows contained within channel. Ratings derived from current meter gaugings and there are a good number of both low and high flow gaugings providing a good rating fit. Simple extrapolation used beyond the maximum gauged flow at 2.16m. Hydro-electric scheme opened in 2011 which is affecting (particularly low) flows.	AMAX1 2011 event extent captured by aerial photography - area to left of gauging station shows an area of inundation rather than bypass flow. Daily flows from 1975 onwards reprocessed in 2002. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in September 2023 (WINFAP Files v12).	Largely upland given over mainly to grassland or heath. Solid geology - Dalradian schistose sandstone and shale form generally impermeable basement north of the Omagh Thrust. Moinian and Ordovician igneous complexes from generally impermeable basement south of the Omagh Thrust. The rest of the area is underlain by Devonian and Carboniferous conglomerate, sandstone and mudstone that are generally indurated. Drift geology - Extensive drumlinised glacial till with sand and gravel in valleys. Extensive rock near surface and post-glacial peat cover on high ground with restricted development of river alluvium in valleys. No significant urban development.	Records indicate a sensibly natural regime since the station opened in 1972 until HEP scheme downstream started up in 2011. This has had a noticeable impact on summer low flows in 2013 & 2014 when levels dropped to new minima below the bottom end of current rating equation. Given operational constraints of HEP in high flows, Peak Flows data remains unaffected.
201006	Drumragh at Campsie Bridge	320.0	IH4594372192	245943.0	372192.0	54°35'45.2083"N 7°17'23.8850"W	54.59589	-7.28997	Drumragh	Campsie Bridge	63.0	DfIR	201006	201	1972-08-01		VA			11.0	true	false	false	false	false	false	false	false	true	false	false	false	false	N	1972-07-31	2023-09-30	8.361	0.165	1977-07-15	1977-07-15	166.9	1987-10-21	1987-10-21	0.684	1.914	3.87	21.52	31.49	0.33	18689	18689	100.0				68.2	90.4	118.6	202.7	338.8	1152	1163	0.0284	0.0201	0.8411	0.1036	0.0093	0.0709	0.0294	0.7809	0.1067	0.0167					0.0168	0.1973	0.4005	0.6	0.441	0.998	63.7	35.83	33.6	42.8	8.9	37.07	23.2	134	7	0.06	68.2	319.94	0.98	0.903	0.0991	0.007	-1.688	0.411	0.0026					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in July 1972 as part of the original core network in Northern Ireland.	Velocity-area station with cableway. Masonry hut housing stilling well and cableway winch situated on right bank. Drumragh River one of two major watercourses flowing through Omagh that join to form the Strule River. Station affected by backing up with confluence with Camowen downstream. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Main and backup instruments present both using shaft encoders with float & weight. Channel width c.16 metres at station. Top of the berm is 6.08m. Flow is out of bank above 100m3/s however the station is not bypassed. Well rated at low and high flows. Single peak flow rating across the period of record derived from current meter gaugings. Simple extrapolation used beyond maximum gauged level of 3.82m. Daily flows in late December 2010 considered suspect due to likely freezing in stilling well but this is very much an exception rather than the norm for winter conditions.	Highest station flows both recorded in the month of October in 1987 & 2011. Latter event extent captured by aerial photography. Daily flows from 1975 onwards reprocessed in 2002. POT threshold revised in 2017 using the entire period of record data up to 2015 water year.	Approximately agricultural grassland and upland heath. Solid geology - Dalradian schistose sandstone and shale form generally impermeable basement north of the Omagh Thrust. Much of south is composed of Devonian and Carboniferous conglomerate, sandstone, mudstone and limestone that are generally indurated. Prominent Palaeogene dolerite dykes cross the area. Drift geology - Extensive drumlinised glacial till with some sand and gravel in valleys. Extensive rock near surface and post-glacial peat cover on high ground with restricted development of river alluvium in valleys. No significant urban development.	No water abstractions or significant returns.
201007	Burn Dennet at Burndennet	148.3	IC3725604779	237256.0	404779.0	54°53'21.5369"N 7°25'12.6725"W	54.88932	-7.42019	Burn Dennet	Burndennet	6.4	DfIR	201007	201	1975-05-05		VA			10.0	true	true	false	false	true	false	false	false	false	false	false	false	false	E	1975-05-04	2013-09-30	3.975	0.126	2013-09-04	2013-09-06	93.79	1987-10-21	1987-10-21	0.809	1.649	2.494	8.496	12.09	0.5	14030	14030	100.0	1975-05-05		82.981	5.8	54.9	159.6	287.5	634.7	1156	1186	0.0095	0.0342	0.7529	0.1922	0.0098	0.0646	0.1218	0.5379	0.2672	0.014					0.1169	0.1637	0.664	0.61	0.455	0.994	98.3	40.72	35.5	48.7	8.2	31.7	16.43	167	307	0.13	5.8	147.14	0.515	0.752	0.046	0.0044			0.0004			1974		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway and natural control opened in May 1975.	Velocity-area station with cableway. Masonry hut housing cableway winch situated on top of floodbank on right bank. Main and backup instruments present both using pressure probes. Channel width c.11m at station. Instruments re-sited directly in channel in December 2017 as inlet pipe to stilling well is now sitting up out of the water in low flows as channel bed has lowered in recent years.	Natural in-channel control. Major bed shift in recent years has rendered lower end of rating equation as inadequate and in need of review. Bed also prone to movement at high flows prohibiting accurate ADCP gauging at the station. Ratings derived from traditional current meter gaugings with recent check gaugings using in-channel electromagnetic current meter. Highest gauging to date (45 m3/s) in 2009 was c.1 m below top of floodbank. Simple extrapolation used beyond 65m3/s. Two peak flow ratings across period of record.	Daily flows from October 2013 are not available as a result of a shifting bed effecting gauging at low flows. Peak flows unaffected. Water year 1974/1975 rejected because AMAX from partial water year at start of station record. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10) and in August 2024 (WINFAP Files v13).	Predominantly improved grassland, some bog and heath rising to above 500 mAOD. Solid geology - Dalradian rock types form a generally impermeable basement composed of metamorphosed, schistose sandstone, shale, limestone and basic igneous intrusive and extrusive lithologies. Drift geology - upstream, glacial till is overlain by significant sand and gravel and more restricted river alluvium. Downstream, sand and gravel may be absent or hidden by laterally more extensive river alluvium. Rock near surface and post-glacial peat cover extensive on high ground with restricted development of river alluvium in valleys.	No water abstractions or significant returns. Discharge through the underlying gravels may be significant.
201008	Derg at Castlederg	335.4	IH2651284216	226512.0	384216.0	54°42'19.0482"N 7°35'22.1408"W	54.70529	-7.58948	Derg	Castlederg	43.0	DfIR	201008	201	1975-10-29		VA			13.0	true	true	false	true	false	false	true	false	false	true	false	false	true	E	1975-10-29	2023-09-30	14.683	0.107	1989-07-24	1989-07-24	242.9	2015-12-05	2015-12-05	1.005	3.936	7.971	36.28	50.09	0.31	17504	17504	100.0	1975-05-29		189.437	41.6	89.6	172.1	273.0	450.0	1504	1558	0.1813	0.0043	0.5283	0.1517	0.0051	0.1321	0.0059	0.2841	0.1659	0.0019								0.62	0.504	0.914	67.9	35.43	42.2	56.8	9.5	38.17	20.17	177	116	0.12	41.7	335.51	0.907	0.887	0.0771	0.0021			0.0007					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in October 1975.	Velocity-area station with cableway. Masonry hut housing stilling well and cableway winch situated on top of floodbank on right bank. Main and backup instruments present both using shaft encoders with float & weight. Channel width c.32m at station.	Natural bed control downstream of station. Single rating across period of record derived from current meter gaugings. Low flow gauging conducted from upstream road bridge as bed is too rocky to safely wade gauge despite shallow depths at station. High flows gaugings conducted using cableway. Top of flood bank 3.84m. Simple extrapolation used beyond maximum gauged level at 3.04m. Daily flows in late December 2010 considered suspect due to likely freezing in stilling well but this is very much an exception rather than the norm for winter conditions.	The two highest flows on record took place within 3 weeks of each other in November/December 2015 both surpassing the previous long-held Peak Flow record from 1985. Daily flows from 1975 onwards reprocessed in 2002. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in September 2023 (WINFAP Files v12).	Solid geology - Dalradian rock types form a generally impermeable basement composed of metamorphosed, schistose sandstone, shale, limestone and basic igneous intrusive and extrusive lithologies. Moinian and Ordovician igneous complexes form generally impermeable basement south of the Omagh Thrust. Carboniferous conglomerate, sandstone and mudstone are generally indurated. Drift geology - Extensive glacial till with sand and gravel and lake alluvium in valleys. Extensive rock near surface and post-glacial peat cover on high ground with restricted development of river alluvium in valleys. Predominantly upland heath, agricultural grassland, coniferous forest. Castlederg is the main settlement.	There is a large water abstraction plant downstream. Loughs Derg and Mourne are in the headwaters; Lough Mourne is used for water supply in Co. Donegal. Aside from this, there are no significant water abstractions or effluent returns upstream of the station.
201009	Owenkillew at Crosh	440.1	IH4185586684	241855.0	386684.0	54°43'35.1094"N 7°21'04.0898"W	54.72642	-7.35114	Owenkillew	Crosh	40.0	DfIR	201009	201	1980-02-13		VA			6.0	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1980-02-13	2023-09-30	16.308	1.54	1983-08-14	1983-08-14	302.0	1987-10-21	1987-10-21	2.99	5.96	9.51	37.5	53.6	0.42	15936	15936	100.0	1980-02-14		274.55	39.9	122.9	216.0	367.7	677.0	1332	1367	0.059	0.0137	0.6103	0.3152	0.0026	0.089	0.0186	0.4962	0.3946	0.0047					0.1449	0.2801	0.4673	0.64	0.355	0.997	115.5	48.23	36.3	49.7	8.5	48.34	25.49	234	179	0.07	39.9	440.62	0.51	0.963	0.0441	0.0016			0.0002					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened in 1980. Steel cabinet kiosk installed in February 2018 to replace original wooden hut and cableway destroyed in August 2017 flood.	Velocity-area station comprised of steel cabinet kiosk on right bank housing main and backup instruments both using pressure probes. Station replaced that at Killymore in 1980, because of mobile bed problems. Killymore, about a mile upstream, was part of the original core network from the early 1970's. Wooden hut housing stilling well and cableway winch at Crosh destroyed during 23 August 2017 flood. New station sited c.60 m downstream of original station on higher ground although pressure probes are located in same position in river channel inlet pipe to stilling well used in previous station location.	River gets out-of-bank at high flows. The rating is derived from current meter gaugings. Simple extrapolation is used beyond 3.458m (maximum gauged level). Gauging and rating is good but some gaugings at higher flows would be useful.	Highest flow recorded in August 2017 eclipsed previous, long-held peak flow recorded in October 1987. Flows for full period of record reprocessed in 2002. Data in late 2010 suspect likely due to frozen stilling well. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Catchment of grassland, heath and forest with substantial agriculture. Solid geology -Moinian and Dalradian rock types form a generally impermeable basement composed of metamorphosed, schistose sandstone, shale, limestone and basic igneous intrusive and extrusive lithologies. Drift geology - glacial till extensive and overlain with sand, gravel and river alluvium. Rock near surface and post-glacial peat cover extensive on high ground with restricted development of river alluvium in valleys.	No water abstractions or significant returns.
201010	Mourne at Drumnabuoy House	1843.8	IH3477995968	234779.0	395968.0	54°48'37.2624"N 7°27'35.4357"W	54.81035	-7.45984	Mourne	Drumnabuoy House	7.0	DfIR	201010	201	1982-06-16		VA			6.0	true	true	false	true	false	true	false	false	false	true	false	true	true	S	1982-06-16	2023-09-30	59.871	1.336	1989-07-24	1989-07-24	802.8	2015-12-05	2015-12-05	7.261	19.01	34.27	147.1	196.9	0.39	15082	15082	100.0	1982-06-17		603.027	5.2	82.0	154.0	279.2	677.0	1261	1288	0.0768	0.0219	0.6959	0.1692	0.0106	0.0969	0.0308	0.5706	0.21	0.0153					0.0994	0.1561	0.3026	0.62	0.448	0.977	79.6	38.84	35.0	47.0	8.7	78.11	47.44	168	167	0.03	5.2	1843.89	0.891	0.994	0.0787	0.0121		0.816	0.003					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in June 1982 on Mourne River which holds record for highest flow recorded in Northern Ireland.	Velocity-area station with cableway. Masonry hut housing stilling well and cableway winch situated on top of floodbank on right bank. Main and backup instruments present both using shaft encoders with float & weight. Floor of station raised up following major inundation during 1987 flood event. Channel width c.47m at station.	Station location selected to be outside tidal influence of Foyle and influence of Finn River which joins Mourne c.3km downstream to form River Foyle. Natural bed control. Low flow gauging conducted by wade gauging. Electric cableway historically used for high flow gauging however this was destroyed during high flows in winter 2015. Last high flow gauging undertaken in 2002. Rating derived from current meter gaugings. Simple extrapolation used beyond maximum gauged level of 4.27m.	AMAX1 in August 2017 exceeded the previous long-standing highest flow on record from October 1987. Defences constructed post-1987, when Strabane was flooded, protected the town in 2017. No gaps in record. Daily flows for full period of record reprocessed in 2002. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in September 2023 (WINFAP Files v12).	A mainly rural catchment (grassland and heath with limited afforestation), with urban development at Omagh and Castlederg. Solid geology - Moinian and Dalradian rock types form a generally impermeable basement composed of metamorphosed, schistose sandstone, shale, limestone and basic igneous intrusive and extrusive lithologies. Moinian and Ordovician igneous complexes form generally impermeable basement south of the Omagh Thrust. Ordovician and Silurian greywacke sandstones and shales form some of the ground and are generally indurated. Much of south is composed of Devonian and Carboniferous conglomerate, sandstone, mudstone and limestone that are generally indurated. Drift geology - Extensive glacial till with sand and gravel and lake alluvium in valleys. Extensive rock near surface and post-glacial peat cover on high ground with restricted development of river alluvium in valleys.	There is a slight effect of water abstractions. The station has the largest catchment of any in Northern Ireland that has a natural flow regime, and has a relatively small urban percentage.
202001	Roe at Ardnargle	364.4	IC6734424637	267344.0	424637.0	55°03'52.2647"N 6°56'48.2314"W	55.06452	-6.94673	Roe	Ardnargle	5.4	DfIR	202001	202	1975-01-09		VA			8.0	true	true	true	true	false	false	false	false	false	false	false	false	false	SN	1975-01-09	2010-10-22	9.815	0.455	2006-07-26	2006-07-26	144.3	2008-08-16	2008-08-16	1.213	2.895	4.973	24.08	32.97	0.35	13071	12941	99.005	1975-01-10		154.975	4.3	60.9	174.3	360.7	625.7	1241	1250	0.0999	0.0342	0.6394	0.2074	0.0185	0.1348	0.0534	0.5328	0.258	0.0245					0.1732	0.2036	0.5529	0.61	0.403	0.993	89.6	42.01	38.2	51.5	8.3	44.42	22.23	194	335	0.14	4.3	365.73	0.705	0.786	0.0595	0.0149		0.355	0.0064	0.842	0.415	1974		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in January 1975. Very flashy flow regime in spite of large catchment and reservoir in headlands.	Velocity-area station with cableway. Masonry hut housing cableway winch situated on top of floodbank on left bank. Main and backup instruments present both using pressure probes. Channel width c.17m at station. Channel stabilisation work completed in October 2010 saw bank protection and concrete bed installed and control established.	Control comprised of tiered rock olives established in October 2010 as part of bed stabilisation work. Multiple ratings apply to period of record with differences at low flows due to bed movements. High spring tides intrude up to the station. Very large range in water level (6m) although fully contained at high flows by extensive floodbanks.	Daily flows not archived on the NRFA since October 2010 - pending rating review to account for bed stabilisation works. Highest flow recorded on 16th August 2008 when 3 inches of rain fell in 12 hours on already saturated ground during what the Met Office termed "Awful August". Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in August 2024 (WINFAP Files v13).	Predominantly grassland headwaters with some shrub heath, bog and coniferous woodland. Intensively cultivated alluvial plain. High upland headwater area sloping fairly steeply onto an intensively cultivated alluvial plain. Contains towns of Limavady and Dungiven. Solid geology - bedrock is very varied with metamorphic, sedimentary and contemporaneous igneous rocks. Dalradian rock types form a generally impermeable basement composed of metamorphosed, schistose sandstone, shale, limestone and basic igneous intrusive and extrusive lithologyies. Carboniferous conglomerates, sandstones and mudstone are generally indurated. Permeable Triassic sandstone (Sherwood) overlain by impermeable Triassic mudstone. Thin Cretaceous chalk is indurated and overlain by Palaeogene basalt lava flows. Drift geology - glacial till covers much of the area with extensive sand and gravel at the northern end of the catchment. Post-glacial peat cover extensive with restricted development of river alluvium.	Flow regime characterised as flashy despite relatively large catchment area. Headwaters contain Altnaheglish reservoir yielding 32Ml/d.
202002	Faughan at Drumahoe	273.1	IC4641115098	246411.0	415098.0	54°58'52.4459"N 7°16'33.1346"W	54.98123	-7.27587	Faughan	Drumahoe	7.0	DfIR	202002	202	1976-08-26		VA			11.0	true	true	false	true	false	true	true	false	true	true	false	true	true	PGEI	1976-08-26	2017-08-22	7.911	0.58	2006-07-25	2006-07-27	173.0	1987-10-21	1987-10-21	1.3	3.03	4.91	17.7	24.2	0.47	14972	14972	100.0	1976-08-27		151.498	8.6	86.4	173.2	307.5	677.0	1173	1219	0.0502	0.0256	0.6963	0.2146	0.0145	0.1104	0.0543	0.544	0.2796	0.0162					0.2189	0.2335	0.43	0.61	0.426	1.0	98.9	41.1	37.4	50.0	8.3	36.95	19.38	188	338	0.12	8.6	273.03	0.477	0.896	0.0411	0.0106		0.383	0.0044	0.3	0.117			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station opened in August 1976. Steel cabinet kiosk installed in December 2017 to replace original masonry hut and cableway destroyed in August 2017 flood.	Velocity-area station comprised of steel cabinet kiosk on right bank housing main and backup instruments both using pressure probes. Original masonry hut housing stilling well and cableway winch destroyed on 23 August 2017 when floodwaters eroded right bank and undercut station hut which fell into the Faughan. New station sited c.20 m upstream of original station. Channel width c.22m at station.	Natural control c.50m downstream of station altered in 1985. Floodwall constructed on left bank in 1995. Ratings derived from current meter gaugings. All low and high flow gaugings prior to August 2017 were conducted using cableway as channel is too deep to wade gauge even during low flows. Simple extrapolation used beyond maximum gauged level of 2.998m.	Highest flow recorded in August 2017 eclipsed previous, long-held peak flow recorded in October 1987. Daily flows not shown after this event as channel changes necessitates rating revision. Peak flows not affected. Flows for full period of record reprocessed in 2002. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in September 2023 (WINFAP Files v12).	Drumahoe is a suburban development near the coast - some light industry; otherwise agricultural, upland basin. Solid geology - Dalradian rock types form a generally impermeable basement composed of metamorphosed, schistose sandstone, shale, limestone and basic igneous intrusive and extrusive lithologies. Drift geology - Extensive glacial till with sand and gravel and lake alluvium in valleys. Post-glacial peat cover extensive with restricted development of river alluvium.	No significant abstractions or returns.
203010	Blackwater at Maydown Bridge	970.2	IH8197451941	281974.0	351941.0	54°24'34.0627"N 6°44'17.7764"W	54.40946	-6.73827	Blackwater	Maydown Bridge	15.0	DfIR	203010	203	1970-06-26		VA			7.0	true	true	true	true	false	false	false	false	false	false	false	false	false	GN	1970-06-26	2023-09-30	18.14	0.183	1976-09-04	1976-09-04	194.7	2015-12-07	2015-12-07	1.468	4.878	9.615	46.78	64.43	0.42	19455	19090	98.124	1970-06-26		134.233	16.4	50.0	97.3	186.7	382.1	1032	1008	0.0541	0.0432	0.836	0.0544	0.0092	0.0482	0.0316	0.4676	0.0334	0.0086					0.0293	0.04	0.5128	0.57	0.395	0.976	75.9	37.37	31.1	41.6	9.1	76.02	42.2	110	85	0.08	19.5	964.71	1.095	0.937	0.1004	0.0105		0.951	0.0019			1969..1989	1970-10-23..1990-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in June 1970. Flows influenced by major arterial drainage scheme between 1983-1995.	Velocity-area station with cableway. Masonry hut housing stilling well and cableway winch situated in steeply-sloping field on left bank, just downstream of a twin-arched bridge. Main and backup instruments present both using shaft encoders with float and weight. Channel width c.27m at station. Flood bank built on right bank in 1990 constraining all but the most extreme flows - aerial photograph from AMAX2 event in November 2009 (187m3/s, 4.051m) shows overtopping of floodbank directly opposite station.	Natural in-channel control. Historical flows between 1983-1995 impacted by major arterial drainage scheme. Approximately 50% of catchment is in Republic of Ireland where some groundwater may be abstracted but its hydrological significance is not considered to be significant. One peak flow rating across period of record based on gaugings. Gauging close to 2009 AMAX2 event lends credence to rating equation.	Peak flow data are only presented from 1990 onward since the construction of flood bank constrained the majority of high flow events. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in August 2024 (WINFAP Files v13).	Solid geology - indurated Carboniferous limestone, sandstone and mudstone are exposed upstream while permeable Sherwood Sandstone Group occurs downstream. Drift geology -downstream, drumlinised glacial till is overlain by river alluvium. Extensive rock near surface and post-glacial peat cover on high ground with restricted development of river alluvium in valleys. A predominantly rural catchment - largely improved grassland with limited afforestation. Monaghan Town - in the Irish Republic - is the only significant urban centre.	Second largest catchment size (behind 201010 Drumnabuoy House) of NI stations in Peak Flows dataset at 970km2 with a correspondingly high average T-rise of 29 hours - nearly twice the average for NI stations. There is evidence of abstraction activity in the instantaneous data however the scale of the impact is not considered to be significant.
203011	Main at Dromona	243.5	ID0487709012	304877.0	409012.0	54°55'03.8111"N 6°21'54.8112"W	54.91773	-6.36523	Main	Dromona	71.0	DfIR	203011	203	1970-01-01		VA	26.7		7.0	true	true	true	true	false	false	false	false	false	false	false	false	false	S	1970-05-27	2023-09-30	5.57	0.344	2022-08-24	2022-08-24	57.49	1970-08-16	1970-08-16	0.905	2.235	3.612	12.32	17.02	0.5	19485	19435	99.743	1970-05-27		48.337	72.3	89.9	135.7	303.6	542.4	1268	1205	0.0102	0.0735	0.7706	0.1342	0.0119	0.0299	0.0437	0.7075	0.2017	0.0201					0.0789	0.2017	0.4997	0.61	0.492	0.993	57.9	34.81	36.6	50.2	9.0	32.51	17.78	169	226	0.14	72.3	243.56	1.192	0.846	0.1291	0.0062		1.102	0.0018			1969..2022	2015-10-01..2023-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area without cableway, controlled by a weir of capped sheet piles.	Velocity area station with level recorder; instrumentation housed in compartment at top of the vertical well pipe.	Major arterial drainage scheme, channel deepening and bridge replacement, was implemented in the 1980s from the confluence with the River Braid to the headwaters. During river works the cap was removed from weir leading to site moving upstream at ID 049 090 on 01/11/1980, retaining same name. Multiple rating curves, derived from current meter gaugings. No cableway, high flow gauging from gauging bridge. Simple extrapolation used above approx 51 cumecs. High flow gauging in 2002 confirmed validity of rating.	Water year 1969/1970 rejected because AMAX from partial water year at start of station record. Instrument failure lead to missing daily data during water year 2010/2011. Peak flow for this year rejected because the true AMAX may have occurred during this period based on nearby gauges. Additionally, peak flows rejected as unrepresentative post-2015 because of uncertain changes due to which the low flows are likely underestimated. Rejected until further investigations and amendment to rating. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	No significant centres of habitation. Solid geology - the area is underlain predominantly by Palaeogene basalt lava flows. Drift geology - Extensive drumlinised glacial till with sand and gravel concentrated around the River Main and other major valleys. Extensive rock near surface and post-glacial peat cover on high ground with development of river alluvium in valleys.	Water abstracted from Dungonnell Reservoir in the Clogh catchment (12.5Ml/d) is predominantly returned downstream of station.
203012	Ballinderry at Ballinderry Bridge	430.2	IH9267879835	292678.0	379835.0	54°39'29.2550"N 6°33'52.9474"W	54.65813	-6.56471	Ballinderry	Ballinderry Bridge	16.0	DfIR	203012	203	1970-06-29		VA			13.0	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1970-06-29	2023-09-30	9.257	0.605	1975-08-14	1975-08-14	134.3	2008-08-16	2008-08-16	1.578	3.138	5.374	21.03	29.91	0.47	19452	19452	100.0	1970-06-07		133.185	16.0	42.9	97.8	209.0	527.6	1132	1077	0.0201	0.0676	0.8227	0.0731	0.0144	0.0643	0.0993	0.7437	0.0725	0.0232					0.1878	0.1262	0.6502	0.56	0.523	0.996	61.4	34.32	32.8	43.9	8.8	46.75	26.4	119	118	0.15	16.1	429.19	0.787	0.889	0.091	0.0227		0.779	0.0055	0.767	0.769			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway and natural control opened in June 1970.	Velocity-area station with cableway. Wooden hut housing stilling well and cableway winch situated on top of floodbank on left bank. Station located c.60m upstream of a multi-span road bridge which supplements natural bed control slightly further downstream. Main and backup instruments present both using shaft encoders with float and weight. Channel width c.20m at station. Channel too deep to wade gauge in all but the very lowest of conditions at the station but comfortably gaugable in-channel at road bridge.	Stable bed. Flows contained in channel beyond QMED, however highest flows do overtop floodbanks on left bank. Simple extrapolation used above 71m3/s. More high flow gaugings would be advantageous to confirm assumption that station is Suitable for QMED essential to upgrade station to Suitable for Pooling.	Highest 3 flows on record in 1987, 1988 and 2008. Daily flows for full period of record reprocessed in 2002. New rating applied in 2007 to take account of raised bed caused by underpinning of Ballinderry Bridge, data reprocessed back to Sept 1995. Late December 2010 flows considered suspect due to likely freezing in stilling well. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Solid geology - Ordovician igneous complexes form generally impermeable basement overlain by indurated Ordovician and Silurian greywacke sandstones and shales. Much of south is composed of Devonian and Carboniferous conglomerate, sandstone, mudstone and limestone that are generally indurated. Permeable Triassic sandstone (Sherwood) occurs to the east and is overlain by impermeable Triassic mudstone (Mercia). Thin Cretaceous chalk is indurated and overlain by Palaeogene basalt lava flows and Oligocene clay and lignite. Drift geology - Extensive glacial till, sand and gravel particularly in the west. Extensive rock near surface and post-glacial peat cover on high ground with variable development of river alluvium in valleys. Mainly rural catchment (grassland or heath) with significant upland area. Cookstown has cement manufacturing works.
203017	Upper Bann at Dynes Bridge	316.3	IJ043511	304300.0	351100.0	54°23'52.1823"N 6°23'41.4918"W	54.39783	-6.39486	Upper Bann	Dynes Bridge	13.0	DfIR	203017	203	1970-08-14	1991-06-26	VA	74.9		11.0	true	true	false	true	false	false	false	false	false	false	false	false	false	SR	1970-09-01	1991-06-17	5.368	0.105	1975-06-29	1975-06-29	151.0	1978-12-28	1978-12-28	0.509	1.569	2.798	11.95	18.67	0.41	7595	7595	100.0	1970-08-14	1991-06-26	75.943	16.8	68.8	105.8	238.3	673.3	1081	1023	0.0144	0.1104	0.7947	0.0568	0.0206	0.0244	0.0668	0.7793	0.0917	0.0363							0.8977	0.53	0.449	0.974	86.7	35.46	40.9	55.2	10.5	56.14	33.37	135	298	0.07	16.8	315.94	0.692	0.929	0.0781	0.0238		0.48	0.0095	0.798	0.489			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway, natural control.	Velocity area station with cableway, natural section control for low flows.	Cableway present. Natural section control for low flows. Channel capacity is large. Main road bridge 100m downstream gives partial control at medium and high stages. Simple extrapolation has been used beyond 3.08m.	1978 peak estimated (flood banks overtopped). Flows from 1979 onwards reprocessed in 2002. Upper one third of the drainage area is regulated with a minimum prescribed flow of 18Ml/d at Bannfield (203033). Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Impermeable quartzite and granite overlain by superficial deposits mainly till. Significant upland, predominantly grassland or heath, limited afforestation. Urban area at Banbridge, no major industry.	Upper third of the drainage area is regulated with Spelga Dam located in the headwaters of the River Bann.
203018	Six-Mile Water at Antrim	277.6	IJ1452886672	314528.0	386672.0	54°42'54.1064"N 6°13'25.0542"W	54.71503	-6.22363	Six-Mile Water	Antrim	13.0	DfIR	203018	203	1970-08-26		VA			13.0	true	true	true	true	false	false	false	false	false	false	false	false	false	REI	1970-09-02	2023-09-30	6.085	0.087	2008-05-10	2008-05-10	115.5	2008-08-16	2008-08-16	0.88	2.444	4.021	12.79	17.67	0.53	19387	19387	100.0	1970-08-26		80.859	13.7	60.7	140.3	240.5	473.2	1106	1075	0.0299	0.0665	0.7739	0.0447	0.0805	0.038	0.0807	0.7528	0.0517	0.0802					0.0798	0.0362	0.7509	0.52	0.425	0.993	53.2	38.03	36.9	48.6	10.4	33.56	20.28	146	256	0.16	13.7	277.78	0.87	0.881	0.0894	0.0304		0.744	0.0255	0.841	0.863	1969		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway and natural control.	Reasonable velocity-area station.	Control at old bridge downstream. Channel has changed at the station over the years due to channel works and new bridge upstream. There is probably no better site on the river for the station. Multiple ratings applied to period of record. Rating derived from current meter gaugings. Simple extrapolation used above approx 3.5m.	Exceptionally low flows in May/June 2009; however high degree of uncertainty (recession pattern not observed upstream). Low flows during 2008 and 2009 deemed unreliable and are under review. Flows from 1975 onwards reprocessed in 2002. There is a lack of data between July & August 2010 due to vandalism at the site. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Solid geology - the area is underlain predominantly by Palaeogene basalt lava flows. Drift geology - extensive glacial till with sand and gravel concentrated around Six Mile Water valley. Lacustrine deposits might be present below river alluvium. Limited rock near surface and post-glacial peat cover on high ground with restricted development of river alluvium in valleys. Significant proportion of upland - predominantly grassland or heath, limited afforestation. Urban area: Antrim has substantial light industry and Ballyclare is a small market town.	The net effect of industrial abstractions and effluent returns is minor.
203019	Claudy at Glenone Bridge	126.3	IC9629203801	296292.0	403801.0	54°52'21.5752"N 6°30'02.8521"W	54.87266	-6.50079	Claudy	Glenone Bridge	14.0	DfIR	203019	203	1970-12-22		VA			13.0	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1972-06-01	2023-09-30	3.221	0.064	1977-08-17	1977-08-18	45.2	1980-10-23	1980-10-23	0.405	1.05	1.795	7.76	11.22	0.44	18749	18688	99.675	1970-12-22		33.86	17.1	38.8	75.6	238.6	462.7	1128	1131	0.0055	0.0623	0.7751	0.15	0.0121	0.0861	0.1002	0.6408	0.1594	0.0207					0.0689	0.2118	0.6725	0.6	0.463	0.992	48.6	35.11	32.8	44.4	8.3	28.48	15.97	111	95	0.25	17.1	126.42	1.308	0.772	0.1524	0.0204		0.888	0.0036			1970		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway and natural control.	Velocity area station.	Cableway present. Rock bar with boulders 8m downstream of gauge gives low insensitive flow control. Three arch-road bridge 50m downstream gives medium and high flow control. Three peak flow ratings applied to period of record. Rating derived from current meter gaugings from cableway. Simple extrapolation occurs beyond 2m.	Flows from 1980 onwards reprocessed in 2002. Flows for 20-27 December 2010 considered suspect due to likely freezing in stilling well followed by rapid melt event. Need more high flow gaugings. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Catchment is predominantly grassland with no urban areas or major industry. Solid geology - the area is mostly underlain by Palaeogene basalt lava flows. Dalradian occurs in the west forming a generally impermeable basement composed of metamorphosed, schistose sandstone, shale, limestone and basic igneous intrusive and extrusive lithologies. Carboniferous sandstone and mudstone also occurs in the west and is generally indurated. Drift geology - extensive glacial till with sand and gravel around the River Bann. Rock near surface and extensive post-glacial peat cover on high ground with restricted development of river alluvium in valleys.	Natural catchment with no major artificial influences.
203020	Moyola at Moyola New Bridge	304.3	IH9563090521	295630.0	390521.0	54°45'12.7275"N 6°30'55.7329"W	54.75354	-6.51548	Moyola	Moyola New Bridge	13.0	DfIR	203020	203	1971-01-11		VA			18.0	true	true	true	true	false	false	false	false	true	false	false	false	false	SPGI	1971-01-11	2023-09-30	8.726	0.31	1977-07-12	1977-07-12	118.0	1973-01-19	1973-01-19	1.56	3.3	5.25	20.04	28.26	0.45	19256	19252	99.979	1971-01-11		113.948	15.0	40.8	100.2	328.9	566.9	1230	1225	0.0337	0.0482	0.7261	0.1738	0.0175	0.0798	0.1073	0.6247	0.1632	0.0272					0.1596	0.2462	0.5086	0.55	0.454	0.992	74.7	39.42	36.3	48.5	8.5	46.93	26.51	148	88	0.2	15.0	304.2	1.067	0.729	0.112	0.0229		0.551	0.0082	0.809	0.547	1970..1977		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway.	Velocity area station.	Small range. At high flows, river overspills banks. Multi-arched bridge just d/s of station, between the piers, the inverts act as informal, horizontal controls. Rating derived from current meter gaugings. Simple extrapolation occurs above 2.5m.	Daily flows for full period of record reprocessed in 2002. Suspect flows in July 2002, resulting from works on bridge d/s. Rating equation was adjusted in February 2008 due to infilling of scoured invert with concrete by Roads Service. Water year 1970/1971 rejected because AMAX from partial water year at start of station record and 1976-1978 rejected due to missing data. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Predominantly grassland and heath with limited afforestation. Urban areas at Magherafelt and Maghera but no major industry. Solid geology - north of the Omagh Thrust and west of the Tow Valley Fault, Dalradian rock types form a generally impermeable basement composed of metamorphosed, schistose sandstone, shale, limestone and basic igneous intrusive and extrusive lithologies. Moinian and Ordovician igneous complexes form generally impermeable basement to the south and east. Much of south is composed of Carboniferous conglomerate, sandstone, mudstone and limestone that are generally indurated. Drift geology - extensive glacial till and sand and gravel. Rock near surface and post-glacial peat cover on high ground with variable development of river alluvium in valleys.	Kilberry reservoir provides storage in catchment for public water supply, however its impact on the gauging station is minor.
203021	Kellswater at Curry's Bridge	126.3	IJ1053497107	310534.0	397107.0	54°48'34.6170"N 6°16'53.7701"W	54.80962	-6.2816	Kellswater	Curry's Bridge	35.0	DfIR	203021	203	1971-05-25		VA			12.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1971-06-01	2023-09-30	3.043	0.087	1983-08-11	1983-08-11	96.8	2008-08-16	2008-08-16	0.304	0.806	1.45	7.15	11.3	0.32	19115	18750	98.091				37.2	100.0	212.3	323.7	472.9	1231	1188	0.0705	0.0374	0.734	0.1433	0.0149	0.0953	0.0681	0.5912	0.2304	0.0194					0.0199	0.0941	0.5433	0.54	0.346	0.992	64.6	44.57	41.5	54.9	10.6	33.0	18.6	212	252	0.24	37.2	126.46	0.835	0.835	0.0712	0.0044			0.0019					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway and natural control.	Velocity area station 1.5km d/s of confluence with the R Main. Removed from peak flows dataset in September 2019 (WINFAP Files v8).	Cableway present. Bridge downstream does not backup flows, and nor does the River Main at high flows. Rating derived from current meter gaugings from cableway. Simple extrapolation occurs above approx 47m3/s.	Daily flows from 1974 onwards were reprocessed in 2002. Last high flow gauging carried out in 1986. No gaugings above QMED. Out of bank below QMED. Significant unmeasured floodplain flow.	Predominantly upland area - mostly heath, some upland grass pasture, with some shrub heath and coniferous woodland and limited afforestation. No urban development. Solid geology - the area is mostly underlain by Palaeogene basalt lava flows. Drift geology -Extensive glacial till with restricted sand and gravel and river alluvium in valleys. Rock near surface and extensive post-glacial peat cover on high ground.	Ballyboley reservoir provides storage in catchment and abstractions for public water supply but net effect is minor, 13Ml/d. Indirect diversions result in an additional 10 km2 to the catchment but this is offset by the export of water for public water supply out of the catchment. Flows may be affected by fishermen's weirs.
203022	Blackwater at Derrymeen Bridge	182.9	IH6250853031	262508.0	353031.0	54°25'19.2458"N 7°02'16.0154"W	54.42201	-7.03778	Blackwater	Derrymeen Bridge	50.1	DfIR	203022	203	1979-05-01		VA			10.0	true	true	true	true	false	false	false	false	false	false	false	false	false		1998-01-01	2023-09-30	4.976	0.265	2022-09-02	2022-09-02	72.2	2020-08-25	2020-08-25	0.587	1.489	2.589	11.48	17.94	0.4	9404	9404	100.0	1971-05-26		62.337	48.9	68.2	123.1	230.0	381.2	1143	1142	0.1095	0.0115	0.7593	0.1134	0.007	0.147	0.0334	0.7075	0.0987	0.0122					0.112	0.1325	0.6928	0.58	0.46	0.977	78.2	37.2	32.0	42.4	9.0	29.18	16.07	140	84	0.1	49.0	183.94	0.885	0.845	0.0861	0.0056		0.827	0.0009			1979..1989	1979-10-01..1990-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station originally opened in 1971.	Velocity-area station originally opened in May 1971 but closed in November 1971 due to political climate in Northern Ireland (station is located c.500m from border with ROI). Station reopened October 1979. Channel deepened in 1986 as part of River Blackwater Drainage Scheme. Masonry hut housing stilling well situated on right bank. Main and backup instruments present both using shaft encoders with float & weight. Channel width c.11m at station.	Fisheries boulders may cause blockage and affect lower end of rating equation. Good range of gaugings (50m3/s). Unusual catchment geology means station has flat growth curve; does not often get out of bank upstream. Ratings derived from current meter gaugings. Simple extrapolation occurs above 50m3/s.	Highest flows recorded in 2011 & 2015. Data prior to completion of arterial drainage scheme in 1990 not presented in Peak Flows dataset due to the significant change on channel and flow regime. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in September 2023 (WINFAP Files v12).	Catchment contains town of Coalisland. Currently brickmaking and agricultural land use, formerly mining area. Solid geology - bedrock composed of generally indurated Maydown Carboniferous Limestone Formation with some Lower Old Red Sandstone. Drift geology - upstream, drumlinised glacial till and an area of sand and gravel are overlain by river alluvium. Extensive rock near surface with some peat on high ground.	Major arterial drainage scheme deepened channel and drastically lowered levels and altered existing rating equation. The stage/discharge relationship was so significantly altered that data from before scheme completion is excluded from the Peak Flows dataset.
203024	Cusher at Gamble's Bridge	170.7	IJ0479347090	304793.0	347090.0	54°21'42.1848"N 6°23'19.2591"W	54.36172	-6.38868	Cusher	Gamble's Bridge	14.0	DfIR	203024	203	1971-06-28		VA			27.0	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1971-06-28	2023-09-30	3.908	0.013	1976-09-08	1976-09-08	60.1	1987-10-21	1987-10-21	0.205	1.12	2.195	9.42	13.3	0.47	19088	19088	100.0	1971-06-28		52.377	18.0	67.9	120.6	218.4	350.3	1021	996	0.0284	0.0862	0.8503	0.0251	0.0116	0.0376	0.0631	0.8454	0.0323	0.0266						0.0219	0.9598	0.53	0.365	0.992	77.0	38.23	34.6	47.3	9.9	33.17	20.82	132	53	0.16	18.0	170.89	0.555	0.853	0.0581	0.0099		0.497	0.0038			1970..1984	1971-06-28..1984-11-06	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in June 1971. Construction of weir in 1980 stabilised measuring section.	Velocity-area station with cableway. Wooden hut housing stilling well and cableway winch situated on right bank. Main and backup instruments present both using shaft encoders with float and weight. Channel width c.13m at station. Block built weir constructed in 1980 stabilised measuring section although this significantly altered the flow regime rendering earlier flows as unrepresentative. Cusher River runs parallel to the Newry Canal for its final 5km before joining the Lower Bann just south of Portadown.	Block built weir constructed in 1980 acts as control. As a result all data prior to 1980 should be treated with caution and should not be used for flood estimation. Multiple ratings apply to period of record. All flows are contained in bank. Ratings derived from current meter gaugings from cableway.	No gaps in station records although early record (before 1980) prior to weir construction is marked as unrepresentative. Period between 1982-1985 also marked as unrepresentative due to an issue with recording the level relative to the datum, giving lower than expected flow values. Gravel build-up removed in April 1989, thought to affect flows back to Oct 1987. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in August 2024 (WINFAP Files v13).	Solid geology - area underlain by indurated Silurian greywacke sandstones and shales. Palaeogene basalt lava flow form bedrock in an area to the north of the catchment. Drift Geology - Drumlinised glacial till covers much of the area, with river alluvium in the main valleys. Rock near surface and peat associated with Silurian bedrock area. Rural catchment, mostly grassland, some arable farming. Small town of Tandragee is the only sizeable urban area located at very bottom end of the catchment.	Station has an average t-rise figure for NI stations included in Peak Flows - 16.5 hours. No significant artificial influences.
203025	Callan at Martin's Bridge	166.9	IH8919552421	289195.0	352421.0	54°24'45.2145"N 6°37'37.0237"W	54.41256	-6.62695	Callan	Martin's Bridge	16.0	DfIR	203025	203	1971-08-31		VA			13.0	true	true	false	true	false	false	false	false	false	false	false	false	false	RPI	1971-09-01	2023-09-30	2.888	0.016	2003-08-31	2003-08-31	39.64	2022-02-20	2022-02-20	0.182	0.739	1.397	7.126	10.53	0.39	19023	19023	100.0	1971-08-31		38.77	19.3	41.9	114.4	231.2	363.7	983	933	0.0417	0.053	0.8233	0.0354	0.0364	0.0427	0.0681	0.7828	0.0355	0.0611						0.0149	0.9536	0.53	0.385	0.958	71.9	38.22	33.1	44.8	9.7	35.56	20.93	128	330	0.19	19.4	166.7	0.744	0.781	0.0814	0.0281		0.647	0.019	0.791	0.689			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station opened in December 1974.	Velocity-area station with cableway. Wooden hut housing stilling well and cableway winch situated on left bank. Main and backup instruments present both using shaft encoders with float & weight. Channel width c.7m at station.	Natural bed control. Channel in and around staff gauge susceptible to silting up after flood events. High flows truncated by a road bridge immediately upstream of station. Multiple ratings across period of record derived from current meter gaugings. Low flow gauging conducted by wade gauging, high flows gauged using cableway. Simple extrapolation occurs above 40m3/s.	Daily flows from 1975 onwards reprocessed in 2002. Station was rejected from the FEH analysis but has been included in the Peak Flows dataset. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in September 2023 (WINFAP Files v12).	Solid geology - southern area underlain by indurated Ordovician/Silurian greywacke sandstones and shales. North-western area underlain by indurated Permian and Carboniferous conglomerates, sandstone and shale, that are overlain in turn by permeable Triassic sandstone (Sherwood) at the north-eastern margin of the catchment. Drift geology - glacial till (drumlinised) covers much of the area with sand and gravel. Alluvium is common to inter-drumlin lows. Rock near surface and peat associated with Ordovician/Silurian bedrock area. Predominantly grassland and heath, limited arable use. Small amount of upland with limited afforestation. Urban area Armagh with some light industry and Keady.	Reservoir storage in catchment (Seagahan 13.64Ml/d) with abstractions for public water supply and industrial use; minor net effect.
203026	Glenavy at Glenavy	44.6	IJ149725	314900.0	372500.0	54°35'15.7158"N 6°13'24.3068"W	54.5877	-6.22342	Glenavy	Glenavy	56.0	DfIR	203026	203	1971-01-01	2001-02-13	TPVA			25.0	true	true	false	true	false	false	false	false	false	false	false	false	false	RP	1971-11-01	1990-12-31	0.781	0.008	1977-10-16	1977-10-16	21.19	1987-10-21	1987-10-21	0.077	0.171	0.369	1.633	2.489	0.43	7001	6940	99.129	1971-10-28	2001-02-13	18.459	57.0	95.3	152.1	259.5	324.6	1025	987	0.0198	0.0279	0.7814	0.1378	0.023	0.0386	0.0818	0.7177	0.1203	0.0388					0.0234		0.7947	0.52	0.376	0.939	50.4	36.79	35.4	45.3	10.8	19.71	11.51	165	267	0.37	57.0	44.51	0.851	0.894	0.0891	0.0126		0.098	0.0038			1975	1975-10-01..1976-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, no cableway, thin-plate weir control.	Velocity area station. Station now closed, replaced by Leapbridge, located downstream so as to include the effects of Glenavy urban area.	Masonry hut; control is a thin plate weir downstream with a wide notch which is often stop-logged - not knowing when this is done causes problems with record. Rating derived from current meter gaugings. Simple extrapolation occurs beyond 1.7m (maximum gauged level).	Water Year 1975/1976 rejected due to low confidence. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Catchment is largely upland, predominantly grassland and heath. No significant urban development. Solid geology - the area is underlain by Palaeogene basalt lava flows. Drift geology - upstream, extensive glacial till (part drumlinised) is overlain by a significant area of sand and gravel; downstream, restricted river alluvium (terraced) and areas of exposed bedrock.	Two reservoirs in catchment: Stoneyford and Leathemstown with abstractions for public water supply - minor net effect. Pipe feed to private pond is taken off just upstream of weir but downstream of station hence flows at station are not impacted (small flow only).
203027	Braid at Ballee	177.2	ID0978601503	309786.0	401503.0	54°50'57.3023"N 6°17'29.6312"W	54.84925	-6.29156	Braid	Ballee	35.0	DfIR	203027	203	1972-08-17		VA			5.0	true	false	false	false	false	false	false	false	false	false	false	false	false	E	1972-09-01	2023-09-30	4.981	0.285	1975-08-18	1975-08-18	110.0	2008-08-16	2008-08-16	0.897	2.31	3.39	9.95	13.9	0.54	18657	18656	99.995				38.0	62.0	149.3	309.0	442.2	1188	1202	0.0614	0.0431	0.7199	0.1195	0.0566	0.0939	0.0559	0.6848	0.1067	0.064					0.0495	0.083	0.47	0.61	0.498	0.994	61.3	32.63	36.9	51.4	9.5	31.82	15.88	169	233	0.2	38.0	183.03	0.907	0.754	0.0889	0.0328		0.27	0.0249	0.856	0.272			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway opened in August 1972.	Velocity-area station with cableway. Masonry hut housing stilling well and cableway winch situated on left bank. Main and backup instruments present both using shaft encoders with float and weight. Channel width c.11m at station. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Single rating across period of record derived from current meter gaugings. Simple extrapolation used beyond maximum gauged level at 2.2m. Flows not constrained within channel at QMED - highest gauging only 58% of QMED. Weed growth during summer months. At extreme flows the station gets out of bank on both sides of the river but floodplain flow is not significant.	Three highest flow events recorded in 2008, 1995 and 2002. Daily flows from 1980 onwards reprocessed in 2002. POT threshold revised in 2017 using entire period of record data up to 2015 water year.	Geology entirely Upper and Lower Basalt extensively exposed with thin covering of till (part drumlinised). Some alluvium, sand and gravel near to the river. Predominantly improved grassland with some coniferous woodland, some intensive pig and poultry units. Ballymena is the major settlement.	Two small impounding reservoirs (Quoile and Buchna - capacity 409Ml combined) for a public water extraction of 5Ml/d.
203028	Agivey at Whitehill	100.5	IC8833719362	288337.0	419362.0	55°00'49.9094"N 6°37'11.5927"W	55.01386	-6.61989	Agivey	Whitehill	17.0	DfIR	203028	203	1972-11-03		VA			14.0	true	true	true	true	false	false	true	false	true	true	false	false	true	N	1972-12-01	2023-09-30	2.797	0.11	1989-07-24	1989-07-24	70.5	1987-10-21	1987-10-21	0.374	0.864	1.494	6.51	9.63	0.36	18566	18566	100.0	1972-11-03		66.488	16.0	68.8	161.5	322.3	462.7	1277	1270	0.0858	0.0256	0.572	0.2917	0.0316	0.1377	0.0419	0.5396	0.276	0.0129					0.029	0.3965	0.5082	0.61	0.404	0.999	59.5	41.8	35.4	49.1	8.2	27.37	15.61	179	51	0.33	16.3	100.42	1.049	0.868	0.0929	0.0139		0.582	0.0033					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in November 1972 as part of the original core network in Northern Ireland. Flow regime impacted since 2014 by two HEP schemes upstream.	Velocity-area station with cableway. Masonry hut housing stilling well and cableway winch situated on right bank. Main and backup instruments present both using shaft encoders with float & weight. Channel width c.14m at station.	Ratings derived from current meter gaugings from cableway. Ratings considered stable. Out of bank at flows below QMED. Simple extrapolation occurs above maximum gauged level of 2.244m.	Highest flow recorded in October 1987. Flows from 1975 onwards reprocessed in 2002. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in September 2023 (WINFAP Files v12).	Significant proportion of upland, predominantly grassland or heath and coniferous woodland. No urban areas or major industry. Solid geology - the area is mostly underlain by Palaeogene basalt lava flows. Generally impermeable Dalradian occurs in the south. Drift geology - upstream, drumlinised glacial till with restricted lacustrine and river alluvium and areas of peat. Downstream the area of glacio-lacustrine alluvium become much more extensive.	Low to medium flows impacted since June 2014 by two hydro-electric schemes upstream of station, the closest of which has its return point 20m from station. However given operational constraints of HEP in high flows Peak Flows data remains unaffected.
203029	Six-Mile Water at Ballyclare	58.4	IJ282902	328200.0	390200.0	54°44'36.2706"N 6°00'36.2199"W	54.74341	-6.01006	Six-Mile Water	Ballyclare	59.0	DfIR		203	1973-03-12	1998-12	VA			15.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1973-04-01	1990-07-31	1.596	0.029	1990-04-15	1990-04-15	50.72	1981-10-02	1981-10-02	0.158	0.525	1.019	3.327	4.632	0.5	6331	6300	99.51				60.4	99.6	150.4	256.8	410.3	1210	1157	0.0476	0.0733	0.7709	0.0474	0.062	0.0669	0.0675	0.7745	0.0321	0.065					0.0756	0.0505	0.6222	0.52	0.452	0.988	58.0	39.15	40.1	52.7	10.5	13.53	7.81	165	253	0.26	60.4	58.52	0.687	0.87	0.0744	0.0292		0.292	0.0228	0.823	0.351			gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A velocity-area station operating downstream of the Dungonell reservoir, and was closed in 1990.	Velocity area station. Closed in 1990.	No cableway.		Catchment contains the Dungonell reservior. It is almost entirely basalt with considerable superficial deposits of till. Land use is predominantly improved grassland. Some urban/suburban development including the small market town of Ballyclare.
203033	Upper Bann at Bannfield	101.7	IJ2338834071	323388.0	334071.0	54°14'26.4057"N 6°06'29.3780"W	54.24067	-6.10816	Upper Bann	Bannfield	77.0	DfIR	203033	203	1975-03-19		VA			18.0	true	true	false	true	false	false	false	false	false	false	false	false	false	R	1975-03-18	2023-09-30	2.772	0.118	1977-07-10	1977-07-10	69.9	1978-12-28	1978-12-28	0.283	0.72	1.293	6.61	10.0	0.36	17729	17265	97.383	1975-03-19		64.73	78.4	92.9	168.0	385.3	673.3	1341	1261	0.0114	0.0328	0.8284	0.1151	0.004	0.0112	0.0143	0.7688	0.1805	0.0167							0.7708	0.53	0.471	0.951	118.3	36.86	51.9	70.3	11.4	17.71	9.84	202	328	0.22	78.4	101.64	0.545	0.673	0.0616	0.0049			0.0012			1974..2022	1999-10-01..2023-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station opened in March 1975. Flat V control installed in 1989 replacing previous natural control.	Velocity-area station with cableway. Masonry hut housing stilling well and cableway winch situated on right bank. Main and backup instruments present both using shaft encoders with float & weight. Channel width c.10 metres at station. Flat V weir constructed in September/October 1989 to monitor prescribed flow of 18Ml/d.	For high flows, the station is treated as velocity-area as weir drowns at moderate flows. The same high flow rating is therefore applied to the full period of record, with level adjustment for the datum shift due to the weir. Rating is derived from current meter gaugings. Simple extrapolation occurs above approx 46 cumecs.	Major flood event in August 2008. Periods of missing flows between Sep and Oct 1989 during construction of Flat V weir and between Jan and Apr 2009 due to instrument failure. Flows for late Dec 2010 considered suspect due to freezing in stilling well. Gaugings show good agreement with the rating equation between 1989-1998. However since Apr 2000 all gaugings have demonstrated a negative deviation indicating that the current rating equation is over-estimating flows. Until this can be investigated and rectified all data post-1999 has been rejected from the Peak Flows data holdings. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in September 2023 (WINFAP Files v12).	The Upper Bann drains the Mourne Mountains. The catchment is predominantly grassland with some shrub heath; no significant urban fraction. Solid geology - area underlain by indurated Silurian greywacke sandstones and shales intruded by Devonian and Palaeogene granites impermeable (granite and quartzite). Drift geology - rock near surface, drumlinised glacial till is overlain by river alluvium. Peaty alluvium is common to inter-drumlin lows.	Reservoir storage (Spelga Dam) in catchment with abstractions for public water supply the net effect of which is minor. The station is used to monitor a prescribed flow designated for the river below which compensation flows are received from Spelga Dam and Lough Island Reavey.
203038	Rocky at Rocky Mountain	7.7	IJ2430826500	324308.0	326500.0	54°10'20.8849"N 6°05'49.8690"W	54.17247	-6.09719	Rocky	Rocky Mountain	202.2	DfIR	203038	203	1979-11-23		FV			29.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1985-12-26	2023-09-30	0.334	0.008	2005-08-05	2005-08-05	7.04	2010-09-06	2010-09-06	0.046	0.096	0.153	0.811	1.285	0.29	13793	13517	97.999				199.7	274.1	373.9	487.9	636.8	1613	1611			0.4614	0.5627			0.0052	0.3902	0.6287								0.0095	0.53	0.327	1.0	213.0	52.15	60.5	82.7	12.3	4.3	2.27	372	318	0.26	202.2	6.79	0.194	0.677	0.0162	0.0			0.0					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	A flat V weir on a steep mountain stream. Flows pre-1986 have been removed from NRFA.	Flat V weir, approx. 6.1 metres wide in steep mountain stream.	All but notable floods contained. Pebble/cobble bed, large boulders may settle in measuring reach during floods. Theoretical calibration and some confirmatory gaugings (by wading) completed.	Flows for full POR reprocessed in 2002; pre-1986 flows removed from NRFA.	A rugged, impervious catchment - with some thin peat cover in the Mourne Mountains. Shrub heath and rough grass cover. Catchment rainfall may be underestimated.	Natural and responsive regime.
203039	Clogh at Tullynewey	98.7	ID0883610961	308836.0	410961.0	54°56'03.7632"N 6°18'10.0031"W	54.93438	-6.30278	Clogh	Tullynewey	84.0	DfIR	203039	203	1980-11-19		VA			28.0	true	false	false	false	false	false	false	false	false	false	false	false	false	SP	1983-12-19	2023-09-30	2.751	0.053	2009-07-10	2009-07-10	36.3	2012-09-24	2012-09-24	0.321	0.916	1.71	6.22	8.9	0.41	14531	14531	100.0				76.5	104.4	195.1	353.1	542.4	1362	1296	0.0121	0.0441	0.7684	0.1665	0.0126	0.0283	0.038	0.7116	0.2109	0.0159					0.0205	0.1496	0.4583	0.61	0.437	0.986	73.2	38.52	39.1	54.7	9.3	21.17	11.07	213	224	0.22	85.4	98.37	0.756	0.747	0.0742	0.0042			0.0011					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway.	Velocity area station. A good site for representing an Antrim Hills catchment. Removed from peak flows dataset in April 2017 (WINFAP Files v5).	Bed stability issues affect the accuracy of low flows.	June/July 2009 low flows thought to be underestimated and deemed unreliable. Daily flows for full period of record reprocessed in 2002.	Solid geology - the area is underlain predominantly by Palaeogene basalt lava flows. Drift geology - extensive glacial till (part drumlinised) with sand and gravel concentrated in major valleys and extensive inter-drumlin peat cover. Extensive rock near surface and post-glacial peat cover on high ground. Agricultural area, sparsely populated - predominantly grassland with some shrub heath.	Headwaters contain Dungonnell reservoir, yielding 12Ml/d.
203040	Lower Bann at Movanagher	5209.8	IC9307615349	293076.0	415349.0	54°58'37.0767"N 6°32'49.6925"W	54.97697	-6.54714	Lower Bann	Movanagher	7.0	DfIR	203040	203	1980-06-25		VA				true	false	false	false	false	true	false	false	false	false	false	false	false	SR	1980-06-25	2023-09-30	91.508	0.486	2013-05-04	2013-05-04	365.0	2016-01-07	2016-01-07	11.71	19.44	47.35	211.5	235.9	0.66	15803	15803	100.0				9.8	17.6	85.7	213.2	673.3	1037	999	0.0293	0.0678	0.7274	0.0702	0.0259	0.0482	0.0678	0.6259	0.0711	0.036					0.0611	0.1104	0.6141	0.54	0.443	0.704	55.1	35.71	33.2	44.6	9.4	158.92	81.56	103	351	0.06	9.8	5252.19	1.32	0.914	0.1195	0.0238		0.892	0.0096	0.799	0.893			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station measuring the outflow from 37% of Northern Ireland.	Velocity area station. Station measures outflow from 37% of NI.	No cableway, control is masonry weir 800m d/s (built for angling).	Flows for full POR reprocessed in 2002. Some low flows between 2011 and 2013 affected by refurbishment works at Portna sluices (e.g. March 2012 & May 2013).	Lough Neagh (385 sq.km) is within catchment, containing 3636 Mm3 of water. Catchment contains all solid and drift deposits present in N.Ireland. Numerous minor aquifers developed for PWS. Catchment is agricultural - predominantly improved grassland but with pop. approx. 500,000 concentrated in 8 urban centres.	Very artificial flow pattern - regulated by sluices u/s at Portna and Toome. Total net export of water from catchment is approx. 200 Ml/d.
203042	Crumlin at Cidercourt Bridge	55.3	IJ1347276525	313472.0	376525.0	54°37'26.9795"N 6°14'38.1854"W	54.62416	-6.24394	Crumlin	Cidercourt Bridge	24.7	DfIR	203042	203	1981-01-20		VA			21.0	true	true	false	true	false	false	true	false	false	true	false	false	true	N	1981-02-01	2023-09-30	1.055	0.01	2008-06-16	2008-06-16	42.9	1987-10-21	1987-10-21	0.089	0.282	0.519	2.45	3.83	0.35	15582	15582	100.0	1980-01-01		38.615	25.0	84.9	127.4	231.7	383.2	1012	991	0.0188	0.0465	0.8585	0.0509	0.0297	0.0212	0.0722	0.8205	0.0506	0.044							0.9896	0.52	0.338	1.0	41.5	39.61	35.8	46.0	10.7	19.47	10.81	143	283	0.44	25.0	54.36	0.691	0.813	0.0913	0.0227		0.417	0.0052	0.762	0.295			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in January 1981.	Velocity-area station with cableway. Masonry hut housing stilling well and cableway winch situated on right bank. Main and backup instruments present both using shaft encoders with float & weight. Channel width c.8m at station.	Natural bed control. Simple extrapolation occurs above approx 34m3/s. Rating equation flagged as being provisional due to lowering of channel - there has been no change to this rating equation since this time.	Highest flows recorded in August 2008 and October 1987. Daily flows from 1983 onwards reprocessed in 2002. August 2008 peak flows above bankfull and subject to considerable uncertainty. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Hydro-Electric scheme operational on Crumlin River upstream of station since 2017 impacting upon hitherto natural flow regime of river at low flows, high flows unaffected. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in September 2023 (WINFAP Files v12).	Mostly upland - predominantly grassland or heath. No urban areas, some scattered light industry. Solid geology - the area is underlain by Palaeogene basalt lava flows. Drift geology - extensive glacial till (part drumlinised) with development of river alluvium in valleys.	Quick-reacting, largely rural catchment draining into Lough Neagh. Natural regime with minor abstractions.
203043	Oonawater at Shanmoy	94.1	IH7794555679	277945.0	355679.0	54°26'37.2000"N 6°47'57.5685"W	54.44367	-6.79932	Oonawater	Shanmoy	36.0	DfIR	203043	203	1986-11-12		FVVA			21.0	true	true	false	true	false	false	false	false	false	false	false	false	false	RPI	1986-11-11	2023-09-30	1.794	0.005	1995-08-31	1995-08-31	36.0	2008-08-16	2008-08-16	0.114	0.433	0.888	4.477	6.381	0.35	13473	13473	100.0	1986-11-12		33.835	37.5	79.4	108.0	167.5	283.1	1057	1003	0.0238	0.0244	0.9263	0.0188	0.0081	0.0532	0.0791	0.8092	0.0429	0.02					0.043	0.0191	0.9276	0.59	0.4	0.974	78.1	36.05	31.4	43.1	9.0	24.07	13.63	117	92	0.17	37.5	88.59	0.767	0.936	0.0776	0.009		0.315	0.0021					gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway.	Flat V weir installed 1986. Site initially installed 1980/1 with an open channel control but was replaced due to a shifting beds and station bypassing.	Rating is derived from current meter gaugings. Simple extrapolation occurs above 1.4m. More high flow gaugings are required.	The pre-weir record is intermittent, unreliable and is of limited use therefore peak flows are not shown. Daily flows for full period of record reprocessed in 2002. Late December 2010 flows considered suspect due to likely freezing in stilling well. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Predominantly improved grassland with no significant centres of habitation. Highest total grass cover of gauged NI catchments. Solid Geology - Mostly composed of Devonian and Carboniferous conglomerate, sandstone, mudstone and limestone that are generally indurated. Permeable Triassic sandstone (Sherwood) occurs in the east. Drift Geology - Extensive glacial till with sand and gravel and river alluvium in valleys.
203046	Rathmore Burn at Rathmore Bridge	22.5	IJ1974785394	319747.0	385394.0	54°42'08.4306"N 6°08'35.5707"W	54.70234	-6.14321	Rathmore Burn	Rathmore Bridge	42.0	DfIR	203046	203	1981-11-11		VA			23.0	true	true	false	true	false	false	false	false	false	false	false	false	false	N	1983-12-26	2023-09-30	0.38	0.001	2021-07-15	2021-07-26	9.99	1987-10-21	1987-10-21	0.044	0.145	0.251	0.787	1.13	0.51	14524	14524	100.0	1981-11-11		10.561	45.0	71.4	154.7	216.9	317.8	1065	1043	0.0294	0.1013	0.7663	0.0627	0.0381	0.0668	0.071	0.7896	0.0572	0.0283					0.015	0.052	0.6432	0.52	0.429	1.0	57.9	36.88	35.0	45.3	10.2	11.12	6.41	150	197	0.45	45.0	22.5	0.599	0.771	0.0723	0.0			0.0			1981		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station opened in November 1981. Predominantly rural catchment and the smallest catchment of all the NI stations in the Peak Flows dataset at 22.5km2.	Velocity-area station comprised of steel cabinet kiosk on left bank housing main and backup instruments both using pressure probes upstream of double-arched road bridge. Channel width c.4.6m at station. Station located c.1km upstream of confluence with the Sixmilewater. Stable cobble channel bed with well defined straight banks reinforced by tree roots.	Arches of road bridge downstream are liable to collect branches and debris particularly after high flows so backing-up can be an issue. Flows fully contained at QMED but anything above 2.6m does get out of bank. One rating applied across period of record.	Highest flow recorded on 16th August 2008 when 3 inches of rain fell in 12 hours on already saturated ground during what the Met Office termed "Awful August". Late December 2010 flows considered suspect due to likely freezing in stilling well. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in August 2024 (WINFAP Files v13).	Solid geology - the area is underlain predominantly by Palaeogene basalt and rhyolite lava flows. Drift geology - extensive glacial till with an area of lacustrine clay. Limited rock near surface and post-glacial peat cover on high ground with restricted development of river alluvium in valleys. Predominantly improved grassland, but rock outcrops also; some horticulture (mainly potatoes). No significant urban centres.	One of the faster-responding catchments in the NI subset of the Peak Flows stations with a t-rise figure of 9 hours. Some minor abstractions upstream associated with agriculture.
203049	Clady at Clady Bridge	29.4	IJ2008383640	320083.0	383640.0	54°41'11.4508"N 6°08'19.4148"W	54.68651	-6.13873	Clady	Clady Bridge	61.7	DfIR	203049	203	1982-06-16		VA			17.0	true	true	false	true	false	false	false	false	false	false	false	false	false		1983-12-19	2023-09-30	0.618	0.032	1984-07-26	1984-07-30	18.1	1987-10-21	1987-10-21	0.088	0.211	0.349	1.32	2.064	0.42	14531	14531	100.0	1982-06-16		23.65	63.9	118.4	173.9	298.7	473.2	1067	1080	0.0246	0.0328	0.8482	0.0639	0.0424	0.0228	0.079	0.7824	0.1085	0.0208					0.0299	0.0013	0.8967	0.52	0.367	1.0	58.2	40.57	36.7	49.2	10.7	14.1	7.86	193	290	0.47	63.9	29.21	0.501	0.814	0.0599	0.0			0.0			1981		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with natural control opened in February 1982.	Velocity-area station. Wooden hut housing stilling well on right bank. Main and backup instruments present both using shaft encoders with float and weight. Channel width c.9m at station.	Full range of flows contained within channel. Rating derived from current meter gaugings and there are a good number of both low and high flow gaugings providing a good rating fit. Simple extrapolation used beyond the maximum gauged flow at 14ms/s. Immediately upstream of station is a long, straight culverted section which goes under a main road. Hydro-electric schemes upstream and immediately downstream of the station cause minor alterations to low flows. One peak flow rating across period of record.	AMAX1 occurred in August 2008 was 40% higher than AMAX2. Daily flows for full record reprocessed in 2002. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in September 2023 (WINFAP Files v12).	Solid geology - the area is underlain predominantly by Palaeogene basalt and rhyolite lava flows. Drift geology - extensive glacial till with an area of lacustrine clay. Limited rock near surface and post-glacial peat cover on high ground with restricted development of river alluvium in valleys.	Natural catchment - no drainage works or urbanisation.
203050	Ballysally Blagh at University of Ulster	14.2	IC8472333960	284723.0	433960.0	55°08'44.0921"N 6°40'19.2920"W	55.14558	-6.67203	Ballysally Blagh	University of Ulster	10.5	DfIR	203050	203	1993-06-02		VN				true	false	false	false	false	false	false	false	false	false	false	false	false		1993-06-02	2023-09-30	0.203	0.008	2021-07-25	2021-07-25	4.79	2010-03-30	2010-03-30	0.029	0.075	0.117	0.49	0.729	0.51	11078	11078	100.0				10.0	24.4	40.7	67.6	130.8	926	971	0.0197	0.2191	0.5591	0.137	0.0731	0.0351	0.1488	0.6664	0.053	0.1114					0.0405	0.1797	0.5886	0.61	0.455	1.0	32.0	29.92	30.4	38.4	7.6	7.76	4.0	44	225	0.43	10.0	14.65	0.784	0.828	0.1154	0.0353		0.379	0.026	0.742	0.366			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	V-notch weir with records since 1993.	V-notch weir.	Rating extrapolated above around 0.8m (2 cumecs).	GDFs from 1993. Flows for full POR reprocessed in 2002. Flows between Sept 2010 and July 2011 altered to take account of suspected debris on weir crest and should be treated with caution.	Flows from low hills across agricultural land and then through suburban area. Soils outside the urban area are water gleys.
203092	Main at Dunminning	221.5	ID0505210966	305052.0	410966.0	54°56'06.8403"N 6°21'42.4239"W	54.93523	-6.36178	Main	Dunminning	75.2	DfIR	203092	203	1983-05-25		VA			6.0	true	false	false	false	false	false	false	false	false	false	false	false	false	SR	1983-08-24	2023-09-30	5.776	0.372	1984-07-27	1984-07-27	73.2	2002-11-14	2002-11-14	0.964	2.26	3.68	12.6	17.6	0.49	14648	14625	99.843				75.1	89.9	137.0	310.3	542.4	1282	1215	0.0088	0.0773	0.7733	0.1293	0.0124	0.0276	0.0428	0.7142	0.1976	0.021					0.0729	0.1815	0.5138	0.61	0.498	0.994	59.7	34.57	37.1	50.8	9.0	30.02	16.52	172	235	0.15	75.1	220.96	1.218	0.808	0.1317	0.0068		1.033	0.002					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station draining a mainly grassland catchment.	Velocity area station located immediately d/s of a radial-gated flood control structure.	Cableway present.	Flows for full POR reprocessed in 2002. Instrument failure lead to missing data in August 2010.	Geology predominantly basalt overlain by till with alluvium in valleys. Landuse mainly improved grassland but catchment contains Glarryford bog.	Upstream reservoir effectively transfers 12 Ml/d to points downstream of the station.
203093	Main at Shane's Viaduct	707.4	IJ0861489605	308614.0	389605.0	54°44'33.6296"N 6°18'51.3169"W	54.74267	-6.31425	Main	Shane's Viaduct	25.6	DfIR	203093	203	1983-12-31		VA			11.0	true	true	true	true	false	false	false	false	false	false	false	false	false	RI	1983-12-30	2023-09-30	20.057	0.565	1984-07-27	1984-07-27	261.4	2008-08-16	2008-08-16	2.641	7.783	13.06	43.91	60.1	0.49	14520	14382	99.05	1983-12-31		201.292	21.0	56.8	133.3	295.2	542.4	1186	1154	0.0349	0.0615	0.7496	0.1198	0.0315	0.059	0.0578	0.6928	0.1519	0.0401					0.0527	0.1343	0.5704	0.57	0.459	0.995	55.6	35.68	36.4	49.6	9.4	61.3	35.09	158	224	0.11	21.1	707.79	1.13	0.911	0.1128	0.0242		0.665	0.0109	0.819	0.65			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station opened in December 1983.	Velocity-area station, previously with cableway which was vandalised in 2016. Masonry hut on right bank housing main and backup instruments present both using pressure probes. Channel width c.36m at station. Major hydro-electric scheme upstream of station has considerable impact on instantaneous data when operational.	Natural in-channel control. Contained at all flows. Upper half of Main river was subject to a major arterial drainage scheme, channel deepening and bridge replacement in the 1980s from the confluence with the River Braid to the headwaters. One peak flow rating applied to the period of record. The rating is derived from current meter gaugings. Large boulders in channel makes wade gauging impossible in all but the very lowest of flows. Simple extrapolation occurs above approx. 226 m3/s. Gaugings cover wide range and rating is good.	AMAX1 recorded in August 2008 was double QMED. Periods of missing flow in 2010 (July-November) and 2011 (May-June) due to instrument failure. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in August 2024 (WINFAP Files v13).	Significant upland areas, predominantly grassland or heath, limited afforestation. Extensive bogland in the north. Solid geology - the area is underlain predominantly by Palaeogene basalt lava flows. Drift geology - extensive glacial till with limited rock near surface and post-glacial peat cover on high ground. Significant development of river alluvium (terraced) around Clady Water. Contains Ballymena (substantial light industry) and Randalstown.	Third largest catchment size (behind 201010 Drumnabuoy House and 203010 Maydown Bridge) of NI stations in Peak Flows dataset at 707km2. T-rise figure of c.17 hours. Clogh, Braid and Kellswater all within catchment and contain a series of small reservoirs used for public water supply. Large hydro-electric scheme upstream of station has impact on instantaneous data when in operation however the peaks and troughs average out over the daily and monthly values.
203097	Upper Bann at Moyallen	304.9	IJ045504	304500.0	350400.0	54°23'29.4055"N 6°23'31.2963"W	54.3915	-6.39203	Upper Bann	Moyallen	17.1	DfIR	203097	203	1990-08-20		VA			12.0	true	false	false	false	false	false	false	false	false	false	false	false	false		1990-08-20	2023-09-30	5.765	0.16	2018-07-13	2018-07-13	97.19	2015-12-30	2015-12-30	0.692	1.773	3.154	13.12	19.61	0.44	12095	12095	100.0				17.1	73.1	107.8	242.5	673.3	1088	1030	0.0148	0.1097	0.7952	0.0564	0.0208	0.0243	0.0648	0.7794	0.0937	0.0362							0.8944	0.53	0.451	0.973	88.0	35.4	41.2	55.6	10.5	55.36	33.52	138	302	0.07	17.1	306.22	0.69	0.935	0.0776	0.024		0.455	0.0098	0.798	0.463			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened as a replacement for 203017.	Velocity area station opened to replace 203017 in 1990.	With cableway and natural control.	Flows for full period of record reprocessed in 2002. Replaced 203017 in 1990.	Predominantly improved grassland, some horticulture (mainly potatoes). Urban areas include the towns of Banbridge and Rathfriland.
204001	Bush at Seneirl Bridge	299.2	IC9419136250	294191.0	436250.0	55°09'51.9680"N 6°31'22.1856"W	55.16444	-6.52283	Bush	Seneirl Bridge	25.0	DfIR	204001	204	1972-08-21		VA			9.0	true	true	true	true	false	true	true	false	true	true	false	true	true	SPG	1972-08-21	2023-09-30	6.895	0.216	1983-09-01	1983-09-01	88.54	1981-10-03	1981-10-03	1.18	2.802	4.408	15.19	21.11	0.51	18668	18588	99.571	1972-08-21		62.534	25.0	41.7	90.1	264.5	540.8	1154	1116	0.1004	0.1248	0.6182	0.1451	0.0137	0.1143	0.0453	0.6389	0.1851	0.0202					0.1179	0.2792	0.5057	0.61	0.561	0.992	43.8	29.33	36.3	48.6	8.2	46.75	23.32	119	245	0.17	25.0	298.98	1.551	0.79	0.164	0.0084		0.574	0.0026			1974		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in August 1972 as part of the original core network in Northern Ireland.	Velocity-area station with cableway. Masonry hut housing stilling well and cableway winch situated on right bank. Main and backup instruments present both using shaft encoders with float & weight. Channel width c.17m at station.	Stable bed with section control. Out of bank at flows above QMED although station is not bypassed. The rating is derived from current meter gaugings. Simple extrapolation occurs above highest gauged flow of 63m3/s. One peak flow rating across period of record.	Highest flow recorded in October 1981. Full period of record daily flows reprocessed in 2002. Gaps in early part of record - most of 1974 missing and 3 months missing from late 1977. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Solid geology - the area is mostly underlain by Palaeogene basalt lava flows. Beneath basalt occurs permeable Triassic sandstone (Sherwood) that is overlain by indurated Cretaceous chalk. Impermeable Oligocene Lough Neagh Group clays and lignite underlie the south-west of the area, while the east is composed of Dalradian rock types that form a generally impermeable basement composed of metamorphosed, schistose sandstone, shale, limestone and basic igneous intrusive and extrusive lithologies. Drift geology - extensive glacial till with sand and gravel around the River Bush and other major valleys. Rock near surface and extensive post-glacial peat cover on high ground with restricted development of river alluvium in valleys. Predominantly grassland with some horticulture (mainly potatoes), coniferous woodland and shrub heath. Contains the town of Ballymoney.	Altnahinch reservoir upstream, impact is minor.
205004	Lagan at Newforge	491.6	IJ3287269316	332872.0	369316.0	54°33'16.9779"N 5°56'49.3493"W	54.55472	-5.94704	Lagan	Newforge	5.1	DfIR	205004	205	1972-07-10		VA	104.1		7.0	true	true	true	true	false	true	false	false	true	true	false	true	true	GEI	1972-08-01	2023-09-30	8.128	0.163	2021-07-26	2021-07-26	146.6	1978-12-28	1978-12-28	0.924	2.327	4.126	20.56	28.3	0.42	18688	18688	100.0	1972-10-07		75.107	5.0	37.7	95.2	171.0	529.0	948	916	0.0297	0.1243	0.7256	0.0452	0.0711	0.0393	0.0949	0.7078	0.0566	0.1036					0.0717	0.0032	0.722	0.52	0.459	0.983	59.9	38.83	36.0	46.9	10.4	77.62	37.8	102	304	0.05	5.0	493.14	0.846	0.946	0.0975	0.0376		0.525	0.0321	0.853	0.512			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in July 1972 as part of the original core network in Northern Ireland.	A velocity-area station with masonry hut housing stilling well and cableway winch situated on left bank. Station opened in July 1972 to replace Dunmurry station upstream. Main and backup instruments present both using shaft encoders with float & weight. Station rebuilt after showing minor signs of instability. Channel width c.13m at station.	Natural bed control downstream of station. Some unmeasured bypassing occurs at very high flows on right bank. Rating derived from current meter gaugings from cableway as channel is too deep to wade gauge. Simple extrapolation occurs above c.128m3/s. One peak flow rating across period of record.	Highest flow recorded in August 2008. Daily flows from start of 1980 onwards reprocessed in 2002. No gaps in record. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Solid geology - south-eastern area underlain by indurated Ordovician/Silurian greywacke sandstones and shales. North-western area underlain by indurated Permian conglomerates, sandstone and shale, that are overlain in turn by permeable Triassic sandstone (Sherwood) and impermeable Triassic mudstone (Mercia) and Jurassic mudstone. Thin Cretaceous chalk is indurated and overlain by Palaeogene basalt lava flows. Drift geology - Glacial till (drumlinised) covers much of the area with extensive sand and gravel and river alluvium in the main Lagan Valley. Rock near surface, drumlinised glacial till, peat and limited river alluvium associated with Ordovician/Silurian bedrock area. Predominantly improved grassland, some horticulture (mainly potatoes). Contains dense urban areas of south Belfast and Lisburn.	Numerous public water supply boreholes in the Sherwood Sandstone - pumping capacity total nearly 30Ml/d. All effluent returns to the river. Station typically exhibits double-peak in high flow events due to difference in time it takes urban and rural parts of catchment to drain to watercourse.
205005	Ravernet at Ravernet	73.5	IJ2665161265	326651.0	361265.0	54°29'02.4986"N 6°02'47.7092"W	54.48403	-6.04659	Ravernet	Ravernet	31.0	DfIR	205005	205	1972-07-24		FV+VA			45.0	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1978-01-01	2023-09-30	1.136	0.0	2018-07-26	2022-09-02	26.8	2008-08-16	2008-08-16	0.033	0.212	0.545	2.95	4.25	0.42	16709	16709	100.0	1972-07-24		14.495	33.7	72.1	98.7	132.5	176.4	937	946	0.0285	0.1039	0.8188	0.0396	0.009	0.0365	0.0481	0.8359	0.055	0.0274					0.0013		0.4919	0.52	0.422	0.934	55.8	44.85	37.9	48.6	10.5	18.94	10.5	100	231	0.09	33.7	73.72	0.893	1.046	0.1065	0.0			0.0			1971		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir station gauging a natural catchment with significant storage in headwater loughs.	Station opened 1973 as a velocity area station. In 1977 a concrete Flat-V weir and high-flow gauging bridge were constructed.	Flows contained. Weir requires cleaning in summer, though little deposition of material behind weir. Two peak flow ratings apply to period of record. High flow rating from current meter gaugings; simple extrapolation above 1.4m. More medium-flow gaugings required. Prior to weir installation rating based on current meter gaugings.	Daily flows from start of 1980 reprocessed in 2002. Water year 1971/1972 rejected because AMAX is from partial water year at start of station record. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Solid geology - Silurian greywacke sandstones and shales form indurated bedrock. Drift geology - upstream, rock near surface and drumlinised glacial till overlain by limited river alluvium (terraced). Downstream, extensive glacial sand and gravel complex. Predominantly improved grassland with some horticulture (mainly potatoes). No significant urban development.	Natural flow regime; significant storage in headwater loughs.
205008	Lagan at Drumiller	84.6	IJ2363552493	323635.0	352493.0	54°24'21.6435"N 6°05'48.2998"W	54.40601	-6.09675	Lagan	Drumiller	81.0	DfIR	205008	205	1974-03-14		FV+VA			28.0	true	true	true	true	false	false	true	false	true	true	false	false	true	N	1974-04-01	2023-09-30	1.658	0.003	1995-08-23	1995-08-23	39.2	1978-12-28	1978-12-28	0.084	0.369	0.798	3.99	5.87	0.35	18080	18001	99.563	1974-03-14		27.176	83.2	104.4	156.4	245.2	529.0	1082	1016	0.0148	0.0687	0.8731	0.0436	0.0056	0.0183	0.0279	0.8766	0.0627	0.0201							0.768	0.53	0.403	0.992	86.5	44.9	40.9	53.0	10.7	19.21	11.7	168	337	0.18	83.3	84.97	0.668	0.75	0.0694	0.0135		0.747	0.0013			1973		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station opened in March 1974. Station located at top of Lagan catchment between villages of Dromara and Dromore.	Velocity-area station opened March 1974 with open channel control. Masonry hut housing stilling well situated on right bank. Main and backup instruments present both using shaft encoders with float & weight. Concrete Flat V weir installed in 1991. Channel width c.10m at station.	Prior to weir installation in 1991 rating based solely on gaugings. Low flow gauging conducted by wade gauging with high flow gaugings carried out on downstream side road bridge at station. Road bridge rebuilt in January 2014 but impact on flows deemed minimal. Minor floodplain flow on left bank at very high flows. Simple extrapolation used above highest gauged flow of 30.77m3/s (gauged on 07/11/2000). One peak flow rating across period of record.	Daily flows from 1978 onwards reprocessed in 2002. Late December 2010 flows considered suspect due to likely freezing in stilling well. Gap in data between August and November 1991 when flat V weir was installed. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Predominantly upland heath rising to over 500m, some grassland used for sheep grazing. Solid geology - Silurian greywacke sandstones and shale form indurated bedrock. Drift geology - rock near surface, drumlinised glacial till and river alluvium. Catchment contains one large village (Dromara).	Natural regime - no water abstractions or significant effluent returns.
205010	Lagan at Banoge	189.8	IJ123540	312300.0	354000.0	54°25'19.8064"N 6°16'14.3340"W	54.42217	-6.27065	Lagan	Banoge	39.0	DfIR	205010	205	1974-11-01	1994-07-26	VA			17.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1974-11-01	1994-07-26	2.64	0.017	1975-09-02	1975-09-02	198.0	1978-12-28	1978-12-28	0.049	0.383	1.04	6.009	9.48	0.29	7208	6963	96.601				39.6	73.8	117.1	200.7	529.0	986	927	0.0156	0.099	0.8387	0.0336	0.0169	0.0251	0.0671	0.8269	0.0491	0.0368							0.8587	0.53	0.423	0.992	75.5	41.03	37.5	48.7	10.5	36.26	19.69	131	310	0.1	39.6	178.54	0.773	0.866	0.0808	0.0223		0.747	0.0065	0.776	0.646			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station, once with cableway, but now calibrated by wading.	Velocity area station. Original station by-passed by millrace but was then moved downstream. Station closed in 1994 and replaced by Feney. Removed from peak flows dataset in September 2023 (WINFAP Files v12).	Station previously had cableway, but subsequently calibrated by wading. Station subject to weed problems at low summer flows and goes out of bank at high flows. The rating is derived from current meter gaugings carried out by wading. Simple extrapolation occurs beyond 1.94m (highest gauged level). Poor range of gaugings, few high flow gaugings. Floodplain flow is ungauged.	Daily flows from start of 1985 onwards reprocessed in 2002.	Upland heath rising to over 500m. Remainder is agricultural grassland except for the town of Dromore. Geology - entirely Silurian overlain with till.	No water abstractions. The town of Dromore's effluent is returned to river with minor impact.
205011	Annacloy at Kilmore Bridge	186.6	IJ4485350808	344853.0	350808.0	54°23'07.0676"N 5°46'15.8318"W	54.3853	-5.77106	Annacloy	Kilmore Bridge	9.0	DfIR	205011	205	1979-11-23		VA			19.0	true	true	true	true	false	true	false	false	false	true	false	true	true		1979-11-22	2023-09-30	3.598	0.017	1984-07-28	1984-07-28	61.96	2008-08-17	2008-08-17	0.165	0.742	1.658	9.143	13.84	0.35	16019	16019	100.0	1979-11-23		41.317	9.1	48.3	90.0	145.4	295.2	971	968	0.0386	0.0754	0.7982	0.0587	0.0273	0.0535	0.0309	0.8115	0.0581	0.0459							0.6579	0.53	0.44	0.96	66.3	44.65	38.7	51.0	10.4	29.58	15.16	95	85	0.15	9.1	186.21	0.894	0.933	0.1041	0.0235		0.941	0.0113	0.741	0.898	1979		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station with cableway opened in November 1979.	Velocity-area station opened November 1979 with open channel control. Station is comprised of steel shipping container housing stilling well and cableway winch situated on left bank. Main and backup instruments present both using shaft encoders with float and weight. Channel width c.11m at station.	Open channel control. Weed growth during summer months known to affect low flows. Bank vegetation known to impact upon high flows - see photograph showing slumped section of bank that has fallen into watercourse. Upstream 2-arch road bridge replaced in June 2016 with single span bridge. Downstream of station river flattens out and discharges through the Quoile Barrage. Some out of bank flows during high flows on right bank but contained to beyond QMED. Low flows wade gauged at station, high flows historically gauged using cableway, now gauged using ADCP. Rating derived from current meter gaugings. Simple extrapolation highest gauged flow of 60.4m3/s. One peak flow rating across period of record.	Responsive natural regime with no significant artificial influences. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Solid geology - Ordovician/Silurian greywacke sandstones and shales form indurated bedrock. Drift geology - rock near surface, drumlinised glacial till, peat and limited river alluvium. Predominantly improved grassland, some urban development (including Ballynahinch).	In common with most eastern stations in Northern Ireland the highest flow was recorded in August 2008. No gaps in record. Daily flows for full period of record reprocessed in 2002. POT threshold revised in 2017 using entire period of record data up to 2015 water year.
205015	Cotton at Grandmere	19.2	IJ5236081797	352360.0	381797.0	54°39'40.5180"N 5°38'22.6225"W	54.66125	-5.63962	Cotton	Grandmere	14.0	DfIR	205015	205	1981-09-16		VA			64.0	true	false	false	false	false	false	false	false	false	false	false	false	false		1990-05-14	2023-09-30	0.281	0.007	1991-09-08	1991-09-19	5.23	2010-03-30	2010-03-30	0.029	0.082	0.151	0.693	0.981	0.44	12193	11808	96.842				4.9	23.6	31.7	58.1	135.3	915	862	0.0258	0.1441	0.6334	0.0323	0.1766	0.0432	0.0641	0.6693	0.0326	0.2051					0.0518	0.0534	0.6479	0.52	0.488	0.998	24.4	41.82	33.7	44.3	10.2	12.72	5.81	39	42	0.22	4.9	22.68	1.111	0.918	0.2166	0.0578		0.462	0.0774	0.911	0.404			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area gauging a predominantly rural catchment.	Velocity area station.	Simple extrapolation used above maximum gauging of 5.64m3/s.	Flows reprocessed in 2002. Missing flows in Oct/Nov 2010 due to instrument failure.	Geology is Silurain sedimentary rocks overlain by a limited coverage of peat and alluvium. Mostly flat grassland with some urban development (Bangor). Soil is shallow brown earth with organic alluvium & surface water gleys.
205020	Enler at Comber	61.8	IJ4591369708	345913.0	369708.0	54°33'16.7316"N 5°44'43.6108"W	54.55465	-5.74545	Enler	Comber	4.9	DfIR	205020	205	1983-05		FV			19.0	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1983-12-29	2023-09-30	0.829	0.0	1983-12-29	1983-12-29	26.6	2010-03-30	2010-03-30	0.108	0.25	0.423	1.85	2.86	0.41	14521	14513	99.945	1983-05-20		18.703	3.9	29.2	79.8	147.9	212.2	961	933	0.0153	0.2671	0.592	0.0342	0.0925	0.0319	0.1983	0.623	0.0367	0.1189					0.1219	0.009	0.6938	0.52	0.438	1.0	64.5	37.13	36.2	47.7	10.4	15.86	8.0	83	130	0.21	3.9	61.4	0.496	0.942	0.0637	0.0421		0.836	0.0458	0.843	0.781			gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Flat V weir in trapezoidal channel station opened in May 1983.	Concrete flat V weir in trapezoidal channel. Instruments housed in secure metal shipping container on left bank. Main and backup instruments present both using shaft encoders with float and weight. Channel width c.9m at station. Station opened initially at request of DoE for water quality monitoring but a flood defence scheme in 1985 in Comber afforded the station increased importance.	Weir acts as control but is drowned out at high flows and flows get out of bank at station. High flow gauging possible from road bridge further downstream although this is not ideal as the bridge is very high and there is another watercourse joining the Enler between the station and bridge. One peak flow rating across period of record with simple extrapolation beyond maximum gauging.	AMAX1 in March 2010 was highest flow by considerable margin - 2.7 x QMED and 40% higher than AMAX2. Short 9 day period of missing flow in 2008 due to vandalism. Rating revised following high flow gaugings in 2000/01 (up to 23.6 cumecs), all flows reprocessed producing substantial reduction in highest flows. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in August 2024 (WINFAP Files v13).	Solid geology - Ordovician/Silurian greywacke sandstones and shales form indurated basement overlain in turn by indurated Permian conglomerates, sandstone and shale and permeable Triassic sandstone (Sherwood). Drift geology - drumlinised glacial till covers much of the area with extensive sand and gravel and river alluvium associated with the Enler River valley. Predominantly grassland but highest proportion of horticulture (mainly potatoes) for any gauged NI catchment. Some urban/suburban development in the upper reaches, Dundonald.	Small rural catchment with correspondingly fast time-to-rise figure of 10 hours. A limited number of boreholes nearby with pumped extraction to water supply.
205029	Lagan at Feney	202.6	IJ1421659057	314216.0	359057.0	54°28'01.7385"N 6°14'21.1120"W	54.46715	-6.2392	Lagan	Feney	29.7	DfIR	205029	205	1993-11		VA			14.0	true	false	false	false	false	false	false	false	false	false	false	false	false		1993-12-14	2023-09-30	3.159	0.037	1995-08-21	1995-08-21	46.2	2008-08-17	2008-08-17	0.423	0.963	1.48	7.015	12.8	0.37	10883	10883	100.0				29.8	58.8	108.8	193.6	529.0	967	910	0.015	0.1176	0.8164	0.0316	0.0222	0.0244	0.0789	0.8138	0.0455	0.0427							0.8781	0.53	0.423	0.993	70.1	40.68	36.8	48.0	10.4	43.9	24.71	121	316	0.1	29.8	206.82	0.843	0.853	0.0891	0.0232		0.741	0.0081	0.783	0.681			gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station opened to replace 205010.	Velocity area station opened to replace 205010.	With cableway and natural control, and used simple rating extrapolation used above 35m3/s.	Flows for full period of record reprocessed in 2002. In 2022 summer low flows severely affected by weed growth artificially raising flows.	Predominantly improved grassland, some horticulture (mainly potatoes).
205034	Woodburn at Control	0.15	IJ3703590058	337035.0	390058.0	54°44'23.3001"N 5°52'22.9434"W	54.73981	-5.87304	Woodburn	Control		DfIR		205	1959	1970-11-30	TP				false	true	false	true	false	false	false	false	false	false	false	false	false																				1959-01-01	1970-11-30	0.121	172.7	182.5	212.8	231.6	240.0	1207	1177			1.144	0.0039				1.0809	0.0671							0.186	0.3864	0.52	0.41	0.901	53.9	33.84	39.8	52.4	10.9	4.38	2.17	242	174	0.29	166.2	5.74	0.501	1.029	0.0514	0.0	0.0		0.0			1970		pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Thin plate 90 degree V notch weir.	Lined rectangular concrete channel with thin plate 90 degree V notch weir. Station located downstream of concrete channel connecting two reservoirs.	Theoretical calibration for thin plate weir. Catchment water flows under this channel in concrete pipe. Catchment area taken as upstream of reservoir connecting channel. A1 rating in FSR.	Flows (1961 -1970) did not exceed weir's capacity. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).
205101	Blackstaff at Eason's	13.15	IJ31797237	331790.0	372370.0	54°34'56.6970"N 5°57'44.5885"W	54.58242	-5.96239	Blackstaff	Eason's		DfIR	205101	205	1979-02-20	2002-12-18	VA				false	true	false	true	false	false	false	false	false	false	false	false	false																				1979-02-02	2001-12-18	9.033	7.4	9.8	27.4	136.7	365.6	990	990	0.004	0.0175	0.231	0.0348	0.6606	0.046	0.0115	0.1876	0.0494	0.7208					0.1093	0.001	0.8059	0.52	0.413	0.997	54.7	36.76	36.1	49.1	9.8	5.54	2.93	54	66	0.27	7.4	13.96	1.028	0.568	0.1628	0.1982		0.928	0.4229	0.926	0.863	1978..2001		pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station.	Velocity area station. Originally installed in 1976, which included the Ballymurphy sub-catchment, but was moved slightly upstream to an existing small weir when the Ballymurphy Stream was diverted in approximately 1978.	River is culverted immediately downstream of the Eason's site where it flows through a series of industrial units, predominantly car garages and showrooms. Low flows gauged by wading; high flows off bridge (difficult due to flashy response). High flow rating from current meter gaugings. Simple extrapolation beyond 1.24m (max gauging). Recent gaugings have allowed calibration of upper end of rating.	Sometimes blockages at a grille hundreds of metres downstream have affected levels. Water year at start and end of record rejected due to partial years. Full period of record peak flow data reviewed and released in August 2021 (WINFAP Files v10).	Solid geology - south-eastern half underlain by permeable Triassic sandstone (Sherwood) that is overlain in turn by impermeable Triassic mudstone (Mercia) and Jurassic mudstone. Thin Cretaceous chalk is indurated and overlain by Palaeogene basalt lava flows. Drift geology - glacial till covers much of the area with extensive sand and gravel, estuarine clay (sleech) and river alluvium at the southern end of the catchment. Flashy response.
205105	Knock at Orangefield	12.9	IJ3712073201	337120.0	373201.0	54°35'18.4561"N 5°52'46.6385"W	54.58846	-5.87962	Knock	Orangefield	8.6	DfIR	205105	205	1979-11-16	2013-09-17	VA				true	false	false	false	false	false	false	false	false	false	false	false	false		1983-10-01	2013-09-30	0.187	0.006	1991-10-10	1991-10-19	3.133	2010-03-30	2010-03-30	0.039	0.097	0.133	0.346	0.488	0.59	10958	10844	98.96				7.8	23.9	37.1	137.8	181.1	968	921	0.0672	0.0378	0.366	0.0301	0.4903	0.1084	0.0218	0.3826	0.0611	0.4457					0.2669		0.5034	0.52	0.578	1.0	60.7	30.0	36.1	47.5	10.3	7.42	3.65	61	266	0.2	7.8	12.03	0.608	0.893	0.1006	0.1519		0.809	0.2648	0.877	0.762			gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Previously a Velocity area station in a small urban catchment east of Belfast, now measuring levels only after major flood alleviation scheme. Main stream rises 180m to hills to north east. Disturbed soils in urban area, free draining soils elsewhere.	Velocity area station. Station closed 17/09/13 due to major rechannelisation of Knock River as part of the East Belfast Flood Alleviation Scheme - <a href="http://www.connswatergreenway.co.uk/news/2014-01-28/knock-river-moves-in-orangefield-park-providing-a-green-solution-to-flooding">more information</a>. Photos post-scheme show the major changes to channel.	Simple extrapolation of flows above 4m3/s.	Flows reprocessed in 2002.	Small urban catchment east of Belfast. Main stream rises 180m to hills on NE. Disturbed soils in urban area, free draining soils elsewhere.
206001	Clanrye at Mountmill Bridge	120.3	IJ0853631026	308536.0	331026.0	54°13'00.0648"N 6°20'13.0349"W	54.21668	-6.33695	Clanrye	Mountmill Bridge	16.0	DfIR	206001	206	1971-10-26		VA	18.9		10.0	true	true	true	true	false	false	true	false	true	true	false	false	true	N	1974-12-30	2023-09-30	1.985	0.083	1983-08-15	1983-08-15	35.8	2015-12-30	2015-12-30	0.241	0.654	1.1	4.51	6.6	0.51	17807	17807	100.0	1971-10-26		19.972	16.9	48.5	89.8	155.8	354.3	1065	975	0.0082	0.0889	0.8654	0.0273	0.0107	0.0312	0.0891	0.7942	0.0616	0.0271					0.0		0.9006	0.53	0.569	0.972	75.6	23.69	36.9	49.4	10.0	30.63	17.35	97	274	0.14	16.9	120.47	0.513	0.901	0.064	0.0095		1.071	0.0036			1971..1974	1971-10-26..1975-10-01	gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station opened in October 1971 as part of the original core network in Northern Ireland.	Velocity-area station comprising masonry hut housing stilling well situated on left bank. Main and backup instruments present both using shaft encoders with float & weight. Channel width c.8.5m at station.	Natural bed control. Summer low flows affected by moderate weed growth. Flows contained in all but most extreme flow events. Fishery measures carried out upstream of station in 1990 but did not impact record. Channel works in 1970s affected flows at station. Peak Flows data only presented from 1975 onward. Rating derived from current meter gaugings. Low flows gauged by wade gauging, high flows historically gauged from metal gauging bridge at station. Gaugings conducted up to 1.2 QMED. Simple extrapolation above highest gauged stage at 2.155m. Three peak flow ratings across period of record.	Peak flows data presented for period after completion of drainage scheme in 1975. No gaps in post-1975 record. Daily flows reprocessed in 2002. Three highest flows recorded in March 2013, November 2014 and December 2015. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in October 2018 (WINFAP Files v7) and in August 2024 (WINFAP Files v13).	Solid geology - area underlain by indurated Silurian greywacke sandstones and shales and Lower Palaeozoic granodiorite. Drift geology - rock near surface, drumlinised glacial till, peat and limited river alluvium. Predominantly improved grassland with some horticulture (mainly potatoes). Catchment is completely rural.	Predominantly rural catchment with natural flow regime.
206002	Jerretspass at Jerretspass	107.8	IJ0648733187	306487.0	333187.0	54°14'11.4715"N 6°22'03.3025"W	54.23652	-6.36758	Jerretspass	Jerretspass	11.0	DfIR	206002	206	1971-12-09		VA			12.0	true	false	false	false	false	false	false	false	false	false	false	false	false	N	1972-01-01	2023-09-30	0.702	0.0	1995-08-06	1995-08-23	15.3	2014-11-14	2014-11-14	0.023	0.117	0.256	1.886	3.1	0.34	18901	18876	99.868				11.2	30.6	85.0	128.8	191.0		-9999	0.0151	0.1651	0.785	0.025	0.0096	0.0317	0.1196	0.79	0.0344	0.0262					0.0012		0.9971																											gdf;gmf	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging an entirely rural catchment.	Velocity area station.	Calibrated by wading and from footbridge. Canal intercepts drainage from 73 km from the west (during high flows spillage occurs to the Jerrettspass).	Flows from start of 1981 onwards reprocessed in 2002.	Low catchment runoff, and effective catchment area for flows below the mean is 34.8 sq km. Geology is Llandovery in age. Occasional igneous intrusions. Catchment is entirely rural, predominantly improved grassland with some horticulture (mainly potatoes).
206006	Annalong at Recorder	13.8	IJ350231	335000.0	323100.0	54°08'21.2840"N 5°56'06.3258"W	54.13925	-5.93509	Annalong	Recorder		BCDWC		206	1895-02-09	1943-02-01	TP				false	true	true	true	false	false	false	false	false	false	false	false	false																				1895-02-09	1943-12-01	15.33	124.5	202.6	371.9	592.0	841.2	1565	1704	0.0356	0.0002	0.298	0.6769		0.1007	0.0004	0.1068	0.8014	0.0024							0.2065	0.53	0.336	0.981	270.8	51.72	61.4	76.9	11.6	7.04	3.44	385	146	0.28	125.9	14.44	0.292	0.82	0.023	0.0			0.0			1894		cmr;cdr;cdr-d;pot-flow;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Station operated by Belfast City & District Water Commissioners opened in February 1895.	Station composed of steel plate weir with end contractions and rectangular notch to accommodate low flows. Levels recorded from stilling pool transmitted to standpipe in which a float is connected to a clockwork recorder and flows registered on chart mounted on a cylindrical drum. Station opened in February 1895. Station decommissioned in 1943 when a tunnel upstream to the the Silent Valley reservoir was opened rendering the records no longer natural.	Weir has been classified as good with an A2 grade given in the FSR. The rating for this station is not available but it is thought that the discharge measurements are probably theoretical.	Concerns regarding the accuracy of the weir were raised c.1900 and were found to be unfounded following investigation.	The catchment lies within the quartzose granites of the Mourne Complex. The Annalong Valley has deep deposits of glacial silts, sands, gravels and boulders.	Upland, responsive and natural flow regime.
236005	Colebrooke at Ballindarragh Bridge	313.6	IH3319535906	233195.0	335906.0	54°16'15.3513"N 7°29'28.4590"W	54.27093	-7.49124	Colebrooke	Ballindarragh Bridge	53.0	DfIR	236005	236	1975-09		VA			12.0	true	true	true	true	false	false	false	false	false	false	false	false	false	N	1975-09-01	2023-09-30	8.451	0.314	1995-08-31	1995-08-31	134.1	1987-10-21	1987-10-21	0.774	2.147	4.166	20.74	30.34	0.38	17562	15889	90.474	1975-09-05		109.461	47.5	77.4	126.0	245.7	381.9	1137	1156	0.1278	0.011	0.7025	0.1537	0.0054	0.2076	0.0343	0.6053	0.1343	0.0118					0.057	0.1594	0.3165	0.58	0.421	0.987	74.6	39.02	32.8	43.7	9.2	46.29	24.72	147	235	0.06	47.5	313.58	0.878	0.811	0.0819	0.0067		0.645	0.0012			1974..1986		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity-area station originally opened in September 1975, closed in 1977 and reopened October 1981.	Velocity-area station composed of masonry hut housing on left bank. Downstream of 4-arched road bridge although arch closest to left bank typically silted up with flow restricted through this arch to high flow events only. Main and backup instruments present both using shaft encoders with float and weight. Channel width c.16m at station.	Natural in-channel control. Channel is too deep at station to wade gauge. Some bank erosion on right bank. Rating derived from current meter gaugings. Flows not constrained in channel at QMED although station is not bypassed during flood flows and numerous out of bank flow gaugings have been undertaken. Simple extrapolation occurs beyond 129.6 m3/s. One peak flow rating across period of record.	AMAX1 and AMAX2 in October 1987 and December 2015 respectively both in excess of 150 m3/s. Station originally opened in September 1975, subsequently closed in March 1977 reopened in October 1981. Gaps in data in 1986 (July - August and September - December). Flows from start of 1987 reprocessed in 2002. Broad range of gaugings. Data in December 2010 considered suspect due to the stilling well freezing. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Full period of record peak flow data reviewed and released in August 2024 (WINFAP Files v13).	Solid geology - area underlain by indurated Silurian greywacke sandstones and shales and Lower Palaeozoic granodiorite. Drift geology - rock near surface, drumlinised glacial till, peat, lacustrine clay and limited river alluvium. Land use is predominantly grassland with significant coniferous woodland, some bog and no significant urban development.
236007	Sillees at Drumrainey Bridge	166.3	IH2048640003	220486.0	340003.0	54°18'30.2467"N 7°41'09.6840"W	54.3084	-7.68602	Sillees	Drumrainey Bridge	44.0	DfIR	236007	236	1981-09-22		VA			18.0	true	true	true	true	false	false	false	false	true	false	false	false	false	E	1981-09-22	2023-09-30	5.8	0.042	1989-08-09	1989-08-09	36.59	1991-12-22	1991-12-22	0.448	2.013	4.199	13.75	16.91	0.51	15349	15303	99.7	1981-09-22		24.895	47.7	59.3	104.2	270.1	395.3	1363	1330	0.1716	0.0033	0.7096	0.1048	0.0045	0.2325	0.0181	0.6248	0.1096	0.0108								0.6	0.495	0.888	103.0	31.34	35.5	47.9	9.5	47.08	24.02	140	91	0.06	47.7	167.5	2.282	0.844	0.1622	0.002			0.0006			1980		gdf;gmf;cmr;cdr;cdr-d;pot-stage;pot-flow;gauging-stage;gauging-flow;amax-stage;amax-flow	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station with cableway opened in September 1981.	Velocity-area station with cableway. Masonry hut housing cableway winch situated on right bank. Immediately upstream of single-deck road bridge. Main and backup instruments present both using shaft encoders with float and weight. Channel width c.12m at station.	Natural in-channel control. Downstream road bridge causes backing-up at levels above c.3.25m (c.28m3/s). Single rating equation for entire period of record derived from current meter gaugings. Good number of high flow gaugings. High flows not fully contained on left bank however no bypassing of station occurs. Simple extrapolation occurs beyond highest gauging at 27.6m3/s.	AMAX1 recorded in December 1991 was 1.5 x QMED and 1.2 x AMAX2. No gaps in station record. Daily flows from start of 1984 onwards reprocessed in 2002. POT threshold revised in 2017 using entire period of record data up to 2015 water year. Water year 1980/1981 rejected because AMAX from partial water year at start of station record. Full period of record peak flow data reviewed and released in September 2019 (WINFAP Files v8) and in August 2024 (WINFAP Files v13).	Solid geology - indurated Carboniferous sandstone and mudstone with limestone that is sometimes karstified. Drift geology - extensive glacial till (drumlinised), lacustrine clay and river alluvium in valleys. A mainly agricultural catchment (appreciable forestry in higher areas). No significant urban development.	Some natural storage provided by small lakes in headwaters which attenuate and delay flood peaks resulting in a large time-to-peak c.25 hours.
236051	Ballinamallard at Ballycassidy	159.4	IH2292750868	222927.0	350868.0	54°24'21.2467"N 7°38'51.6787"W	54.4059	-7.64769	Ballinamallard	Ballycassidy	49.8	DfIR	236051	236	1991-04-17		VA			11.0	true	false	false	false	false	false	false	false	false	false	false	false	false		1991-04-17	2023-09-30	3.897	0.196	1995-08-23	1995-08-23	71.2	1991-12-21	1991-12-21	0.473	1.12	2.01	9.42	13.5	0.38	11855	11855	100.0				46.1	66.0	110.1	161.7	314.5	1119	1122	0.0211	0.0165	0.9167	0.0391	0.0108	0.0716	0.0263	0.8576	0.0273	0.022								0.6	0.472	0.993	70.7	33.35	35.8	45.7	9.3	27.18	15.47	113	265	0.1	46.1	160.07	0.978	0.859	0.1033	0.0158		0.727	0.0041					gdf;gmf;cmr;cdr;cdr-d	http://eidc.ceh.ac.uk/administration-folder/tools/ceh-standard-licence-texts/nrfa-data-terms-and-conditions-for-api-access-to-time-series-data-and-metadata/plain	Velocity area station gauging a rural catchment.	Velocity area station.	With cableway and natural control.	All flows reprocessed in 2002.	Predominantly improved grassland.