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Slei Gill upstream of Arkle Beck confluence

EA name: SLEI GILL U/S ARKLE BECK CONFLUENCE (also listed as “SLEI GILL U/S ARKLE BECK CONFLUENCE ARKENGARTHDALE”)
Environment Agency sampling point NE-49905178 · Freshwater - rivers · listed as open (“open” does not mean it is sampled now)

These are samples taken on a date, not live readings of the river. Results reach the Environment Agency's archive days to months after the sample is taken, so the newest here may be weeks or months old. FloodRadar does not grade them.

Where and when

Last sampled
15 Jun 2026, 10:274 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
30 since 21 Nov 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Monitoring (national agency policy)
Where
National Grid 401718, 502012As published, to the nearest 1 m. Open in a map
River, by its own name
Slei Gill
River, by the map
Not placedTwo watercourses within reach (6 m and 23 m) and no name to choose by. The river map cannot say which watercourse this is.
Next gauge downstream
Not known
Why it was sampled
Monitoring (national agency policy) (17 samples)
Planned investigation (local monitoring) (13 samples)

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

99.9%

Sampled 15 Jun 2026, 4 months ago · 30 results banked

90100110120130%20242025202621 Nov 2023, 10:25: 100.8%12 Dec 2023, 10:31: 99.6%23 Jan 2024, 10:40: 99.1%15 Mar 2024, 11:00: 118.2%17 Apr 2024, 10:15: 100.7%15 May 2024, 10:30: 100.3%20 Jun 2024, 10:30: 104.4%17 Jul 2024, 15:39: 100.1%15 Aug 2024, 11:04: 97%18 Sep 2024, 10:05: 100.3%24 Oct 2024, 10:24: 126.4%13 Nov 2024, 10:26: 101.4%19 Dec 2024, 12:00: 102.4%10 Feb 2025, 10:58: 101.2%24 Mar 2025, 11:00: 101.2%14 Apr 2025, 11:10: 101.9%27 May 2025, 10:15: 101.4%25 Jun 2025, 10:50: 94.2%29 Jul 2025, 10:30: 100.6%20 Aug 2025, 11:10: 102.1%12 Sep 2025, 10:34: 112.2%29 Oct 2025, 10:50: 99.3%28 Nov 2025, 14:49: 100.3%11 Dec 2025, 12:19: 99.8%15 Jan 2026, 10:35: 98.9%17 Feb 2026, 10:53: 100.7%20 Mar 2026, 10:27: 101.1%14 Apr 2026, 10:46: 103%13 May 2026, 11:09: 102.1%15 Jun 2026, 10:27: 99.9%
Every result (30)
SampledResult as publishedReads as
15 Jun 2026, 10:2799.9 99.9%
13 May 2026, 11:09102.1 102.1%
14 Apr 2026, 10:46103 103%
20 Mar 2026, 10:27101.1 101.1%
17 Feb 2026, 10:53100.7 100.7%
15 Jan 2026, 10:3598.9 98.9%
11 Dec 2025, 12:1999.8 99.8%
28 Nov 2025, 14:49100.3 100.3%
29 Oct 2025, 10:5099.3 99.3%
12 Sep 2025, 10:34112.2 112.2%
20 Aug 2025, 11:10102.1 102.1%
29 Jul 2025, 10:30100.6 100.6%
25 Jun 2025, 10:5094.2 94.2%
27 May 2025, 10:15101.4 101.4%
14 Apr 2025, 11:10101.9 101.9%
24 Mar 2025, 11:00101.2 101.2%
10 Feb 2025, 10:58101.2 101.2%
19 Dec 2024, 12:00102.4 102.4%
13 Nov 2024, 10:26101.4 101.4%
24 Oct 2024, 10:24126.4 126.4%
18 Sep 2024, 10:05100.3 100.3%
15 Aug 2024, 11:0497 97%
17 Jul 2024, 15:39100.1 100.1%
20 Jun 2024, 10:30104.4 104.4%
15 May 2024, 10:30100.3 100.3%
17 Apr 2024, 10:15100.7 100.7%
15 Mar 2024, 11:00118.2 118.2%
23 Jan 2024, 10:4099.1 99.1%
12 Dec 2023, 10:3199.6 99.6%
21 Nov 2023, 10:25100.8 100.8%

Dissolved oxygen

as O2 · code 9924 · mg/l

11.9 mg/l

Sampled 20 Mar 2026, 6 months ago · 13 results banked

10121416mg/l20242025202617 Jul 2024, 15:39: 10.5 mg/l15 Aug 2024, 11:04: 10.1 mg/l18 Sep 2024, 10:05: 10.9 mg/l24 Oct 2024, 10:24: 14.4 mg/l13 Nov 2024, 10:26: 12.2 mg/l10 Feb 2025, 10:58: 13 mg/l20 Aug 2025, 11:10: 10.5 mg/l12 Sep 2025, 10:34: 12.3 mg/l28 Nov 2025, 14:49: 12.1 mg/l11 Dec 2025, 12:19: 12 mg/l15 Jan 2026, 10:35: 12.4 mg/l17 Feb 2026, 10:53: 12.9 mg/l20 Mar 2026, 10:27: 11.9 mg/l
Every result (13)
SampledResult as publishedReads as
20 Mar 2026, 10:2711.9 11.9 mg/l
17 Feb 2026, 10:5312.9 12.9 mg/l
15 Jan 2026, 10:3512.4 12.4 mg/l
11 Dec 2025, 12:1912 12 mg/l
28 Nov 2025, 14:4912.1 12.1 mg/l
12 Sep 2025, 10:3412.3 12.3 mg/l
20 Aug 2025, 11:1010.5 10.5 mg/l
10 Feb 2025, 10:5813 13 mg/l
13 Nov 2024, 10:2612.2 12.2 mg/l
24 Oct 2024, 10:2414.4 14.4 mg/l
18 Sep 2024, 10:0510.9 10.9 mg/l
15 Aug 2024, 11:0410.1 10.1 mg/l
17 Jul 2024, 15:3910.5 10.5 mg/l

Water temperature

code 0076 · °C

10.9 °C

Sampled 15 Jun 2026, 4 months ago · 30 results banked

051015°C20242025202621 Nov 2023, 10:25: 7.8 °C12 Dec 2023, 10:31: 6.3 °C23 Jan 2024, 10:40: 5.6 °C15 Mar 2024, 11:00: 8 °C17 Apr 2024, 10:15: 7.4 °C15 May 2024, 10:30: 10.8 °C20 Jun 2024, 10:30: 12 °C17 Jul 2024, 15:39: 13.3 °C15 Aug 2024, 11:04: 13.3 °C18 Sep 2024, 10:05: 11.7 °C24 Oct 2024, 10:24: 9.6 °C13 Nov 2024, 10:26: 7.4 °C19 Dec 2024, 12:00: 6 °C10 Feb 2025, 10:58: 4.8 °C24 Mar 2025, 11:00: 7.4 °C14 Apr 2025, 11:10: 0.88 °C27 May 2025, 10:15: 10.7 °C25 Jun 2025, 10:50: 13.7 °C29 Jul 2025, 10:30: 14.1 °C20 Aug 2025, 11:10: 13.9 °C12 Sep 2025, 10:34: 11.3 °C29 Oct 2025, 10:50: 7.6 °C28 Nov 2025, 14:49: 7.3 °C11 Dec 2025, 12:19: 7.2 °C15 Jan 2026, 10:35: 5.6 °C17 Feb 2026, 10:53: 4.8 °C20 Mar 2026, 10:27: 8.3 °C14 Apr 2026, 10:46: 8 °C13 May 2026, 11:09: 8.8 °C15 Jun 2026, 10:27: 10.9 °C
Every result (30)
SampledResult as publishedReads as
15 Jun 2026, 10:2710.9 10.9 °C
13 May 2026, 11:098.8 8.8 °C
14 Apr 2026, 10:468 8 °C
20 Mar 2026, 10:278.3 8.3 °C
17 Feb 2026, 10:534.8 4.8 °C
15 Jan 2026, 10:355.6 5.6 °C
11 Dec 2025, 12:197.2 7.2 °C
28 Nov 2025, 14:497.3 7.3 °C
29 Oct 2025, 10:507.6 7.6 °C
12 Sep 2025, 10:3411.3 11.3 °C
20 Aug 2025, 11:1013.9 13.9 °C
29 Jul 2025, 10:3014.1 14.1 °C
25 Jun 2025, 10:5013.7 13.7 °C
27 May 2025, 10:1510.7 10.7 °C
14 Apr 2025, 11:100.88 0.88 °C
24 Mar 2025, 11:007.4 7.4 °C
10 Feb 2025, 10:584.8 4.8 °C
19 Dec 2024, 12:006 6 °C
13 Nov 2024, 10:267.4 7.4 °C
24 Oct 2024, 10:249.6 9.6 °C
18 Sep 2024, 10:0511.7 11.7 °C
15 Aug 2024, 11:0413.3 13.3 °C
17 Jul 2024, 15:3913.3 13.3 °C
20 Jun 2024, 10:3012 12 °C
15 May 2024, 10:3010.8 10.8 °C
17 Apr 2024, 10:157.4 7.4 °C
15 Mar 2024, 11:008 8 °C
23 Jan 2024, 10:405.6 5.6 °C
12 Dec 2023, 10:316.3 6.3 °C
21 Nov 2023, 10:257.8 7.8 °C

pH

code 0061

8.3

Sampled 15 Jun 2026, 4 months ago · 30 results banked

7.47.67.888.28.420242025202621 Nov 2023, 10:25: 8.1312 Dec 2023, 10:31: 8.0523 Jan 2024, 10:40: 7.9615 Mar 2024, 11:00: 8.1717 Apr 2024, 10:15: 8.2215 May 2024, 10:30: 8.2920 Jun 2024, 10:30: 8.2317 Jul 2024, 15:39: 8.2415 Aug 2024, 11:04: 8.1118 Sep 2024, 10:05: 8.324 Oct 2024, 10:24: 8.213 Nov 2024, 10:26: 8.319 Dec 2024, 12:00: 8.2910 Feb 2025, 10:58: 7.624 Mar 2025, 11:00: 8.214 Apr 2025, 11:10: 8.127 May 2025, 10:15: 8.225 Jun 2025, 10:50: 8.329 Jul 2025, 10:30: 8.220 Aug 2025, 11:10: 8.312 Sep 2025, 10:34: 8.329 Oct 2025, 10:50: 8.228 Nov 2025, 14:49: 8.111 Dec 2025, 12:19: 815 Jan 2026, 10:35: 8.117 Feb 2026, 10:53: 820 Mar 2026, 10:27: 8.214 Apr 2026, 10:46: 8.313 May 2026, 11:09: 8.315 Jun 2026, 10:27: 8.3
Every result (30)
SampledResult as publishedReads as
15 Jun 2026, 10:278.3 8.3
13 May 2026, 11:098.3 8.3
14 Apr 2026, 10:468.3 8.3
20 Mar 2026, 10:278.2 8.2
17 Feb 2026, 10:538 8
15 Jan 2026, 10:358.1 8.1
11 Dec 2025, 12:198 8
28 Nov 2025, 14:498.1 8.1
29 Oct 2025, 10:508.2 8.2
12 Sep 2025, 10:348.3 8.3
20 Aug 2025, 11:108.3 8.3
29 Jul 2025, 10:308.2 8.2
25 Jun 2025, 10:508.3 8.3
27 May 2025, 10:158.2 8.2
14 Apr 2025, 11:108.1 8.1
24 Mar 2025, 11:008.2 8.2
10 Feb 2025, 10:587.6 7.6
19 Dec 2024, 12:008.29 8.29
13 Nov 2024, 10:268.3 8.3
24 Oct 2024, 10:248.2 8.2
18 Sep 2024, 10:058.3 8.3
15 Aug 2024, 11:048.11 8.11
17 Jul 2024, 15:398.24 8.24
20 Jun 2024, 10:308.23 8.23
15 May 2024, 10:308.29 8.29
17 Apr 2024, 10:158.22 8.22
15 Mar 2024, 11:008.17 8.17
23 Jan 2024, 10:407.96 7.96
12 Dec 2023, 10:318.05 8.05
21 Nov 2023, 10:258.13 8.13

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 20 Mar 2026, 6 months ago · 13 results banked

-0.500.51mg/l20242025202617 Jul 2024, 15:39: below 0.03 mg/l (not detected above this)15 Aug 2024, 11:04: below 0.03 mg/l (not detected above this)18 Sep 2024, 10:05: below 0.03 mg/l (not detected above this)24 Oct 2024, 10:24: below 0.03 mg/l (not detected above this)13 Nov 2024, 10:26: below 0.03 mg/l (not detected above this)10 Feb 2025, 10:58: below 0.03 mg/l (not detected above this)20 Aug 2025, 11:10: below 0.03 mg/l (not detected above this)12 Sep 2025, 10:34: below 0.03 mg/l (not detected above this)28 Nov 2025, 14:49: below 0.03 mg/l (not detected above this)11 Dec 2025, 12:19: below 0.03 mg/l (not detected above this)15 Jan 2026, 10:35: below 0.03 mg/l (not detected above this)17 Feb 2026, 10:53: below 0.03 mg/l (not detected above this)20 Mar 2026, 10:27: below 0.03 mg/l (not detected above this)
Every result (13)
SampledResult as publishedReads as
20 Mar 2026, 10:27<0.03 below 0.03 mg/l (not detected above this)
17 Feb 2026, 10:53<0.03 below 0.03 mg/l (not detected above this)
15 Jan 2026, 10:35<0.03 below 0.03 mg/l (not detected above this)
11 Dec 2025, 12:19<0.03 below 0.03 mg/l (not detected above this)
28 Nov 2025, 14:49<0.03 below 0.03 mg/l (not detected above this)
12 Sep 2025, 10:34<0.03 below 0.03 mg/l (not detected above this)
20 Aug 2025, 11:10<0.03 below 0.03 mg/l (not detected above this)
10 Feb 2025, 10:58<0.03 below 0.03 mg/l (not detected above this)
13 Nov 2024, 10:26<0.03 below 0.03 mg/l (not detected above this)
24 Oct 2024, 10:24<0.03 below 0.03 mg/l (not detected above this)
18 Sep 2024, 10:05<0.03 below 0.03 mg/l (not detected above this)
15 Aug 2024, 11:04<0.03 below 0.03 mg/l (not detected above this)
17 Jul 2024, 15:39<0.03 below 0.03 mg/l (not detected above this)

Phosphate

orthophosphate, reactive, as P · code 0180 · mg/l

below 0.01 mg/l (not detected above this)

Sampled 20 Mar 2026, 6 months ago · 13 results banked

-0.500.51mg/l20242025202617 Jul 2024, 15:39: below 0.01 mg/l (not detected above this)15 Aug 2024, 11:04: below 0.01 mg/l (not detected above this)18 Sep 2024, 10:05: below 0.01 mg/l (not detected above this)24 Oct 2024, 10:24: below 0.01 mg/l (not detected above this)13 Nov 2024, 10:26: below 0.01 mg/l (not detected above this)10 Feb 2025, 10:58: below 0.01 mg/l (not detected above this)20 Aug 2025, 11:10: below 0.01 mg/l (not detected above this)12 Sep 2025, 10:34: below 0.01 mg/l (not detected above this)28 Nov 2025, 14:49: below 0.01 mg/l (not detected above this)11 Dec 2025, 12:19: below 0.01 mg/l (not detected above this)15 Jan 2026, 10:35: below 0.01 mg/l (not detected above this)17 Feb 2026, 10:53: below 0.01 mg/l (not detected above this)20 Mar 2026, 10:27: below 0.01 mg/l (not detected above this)
Every result (13)
SampledResult as publishedReads as
20 Mar 2026, 10:27<0.01 below 0.01 mg/l (not detected above this)
17 Feb 2026, 10:53<0.01 below 0.01 mg/l (not detected above this)
15 Jan 2026, 10:35<0.01 below 0.01 mg/l (not detected above this)
11 Dec 2025, 12:19<0.01 below 0.01 mg/l (not detected above this)
28 Nov 2025, 14:49<0.01 below 0.01 mg/l (not detected above this)
12 Sep 2025, 10:34<0.01 below 0.01 mg/l (not detected above this)
20 Aug 2025, 11:10<0.01 below 0.01 mg/l (not detected above this)
10 Feb 2025, 10:58<0.01 below 0.01 mg/l (not detected above this)
13 Nov 2024, 10:26<0.01 below 0.01 mg/l (not detected above this)
24 Oct 2024, 10:24<0.01 below 0.01 mg/l (not detected above this)
18 Sep 2024, 10:05<0.01 below 0.01 mg/l (not detected above this)
15 Aug 2024, 11:04<0.01 below 0.01 mg/l (not detected above this)
17 Jul 2024, 15:39<0.01 below 0.01 mg/l (not detected above this)

Conductivity

at 25 °C · code 0077 · µS/cm

224 µS/cm

Sampled 15 Jun 2026, 4 months ago · 30 results banked

150200250300350µS/cm20242025202621 Nov 2023, 10:25: 217 µS/cm12 Dec 2023, 10:31: 165 µS/cm23 Jan 2024, 10:40: 171 µS/cm15 Mar 2024, 11:00: 152.7 µS/cm17 Apr 2024, 10:15: 215 µS/cm15 May 2024, 10:30: 219 µS/cm20 Jun 2024, 10:30: 275.9 µS/cm17 Jul 2024, 15:39: 295 µS/cm15 Aug 2024, 11:04: 312 µS/cm18 Sep 2024, 10:05: 323 µS/cm24 Oct 2024, 10:24: 254 µS/cm13 Nov 2024, 10:26: 306 µS/cm19 Dec 2024, 12:00: 229 µS/cm10 Feb 2025, 10:58: 217 µS/cm24 Mar 2025, 11:00: 237 µS/cm14 Apr 2025, 11:10: 295 µS/cm27 May 2025, 10:15: 316 µS/cm25 Jun 2025, 10:50: 315 µS/cm29 Jul 2025, 10:30: 321 µS/cm20 Aug 2025, 11:10: 328 µS/cm12 Sep 2025, 10:34: 324 µS/cm29 Oct 2025, 10:50: 228 µS/cm28 Nov 2025, 14:49: 192 µS/cm11 Dec 2025, 12:19: 172 µS/cm15 Jan 2026, 10:35: 205 µS/cm17 Feb 2026, 10:53: 169 µS/cm20 Mar 2026, 10:27: 241 µS/cm14 Apr 2026, 10:46: 272 µS/cm13 May 2026, 11:09: 279 µS/cm15 Jun 2026, 10:27: 224 µS/cm
Every result (30)
SampledResult as publishedReads as
15 Jun 2026, 10:27224 224 µS/cm
13 May 2026, 11:09279 279 µS/cm
14 Apr 2026, 10:46272 272 µS/cm
20 Mar 2026, 10:27241 241 µS/cm
17 Feb 2026, 10:53169 169 µS/cm
15 Jan 2026, 10:35205 205 µS/cm
11 Dec 2025, 12:19172 172 µS/cm
28 Nov 2025, 14:49192 192 µS/cm
29 Oct 2025, 10:50228 228 µS/cm
12 Sep 2025, 10:34324 324 µS/cm
20 Aug 2025, 11:10328 328 µS/cm
29 Jul 2025, 10:30321 321 µS/cm
25 Jun 2025, 10:50315 315 µS/cm
27 May 2025, 10:15316 316 µS/cm
14 Apr 2025, 11:10295 295 µS/cm
24 Mar 2025, 11:00237 237 µS/cm
10 Feb 2025, 10:58217 217 µS/cm
19 Dec 2024, 12:00229 229 µS/cm
13 Nov 2024, 10:26306 306 µS/cm
24 Oct 2024, 10:24254 254 µS/cm
18 Sep 2024, 10:05323 323 µS/cm
15 Aug 2024, 11:04312 312 µS/cm
17 Jul 2024, 15:39295 295 µS/cm
20 Jun 2024, 10:30275.9 275.9 µS/cm
15 May 2024, 10:30219 219 µS/cm
17 Apr 2024, 10:15215 215 µS/cm
15 Mar 2024, 11:00152.7 152.7 µS/cm
23 Jan 2024, 10:40171 171 µS/cm
12 Dec 2023, 10:31165 165 µS/cm
21 Nov 2023, 10:25217 217 µS/cm

Everything measured here

56 determinands, each kept by its code, unit and sample material: results in different units or on different materials are never mixed. A “below” result is under the laboratory's detection limit, not zero.

Show all 56 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 30 Nov 2023 – Jun 2026 99.9% 15 Jun 2026
Oxygen, Dissolved as O2 9924 River water 13 Jul 2024 – Mar 2026 11.9 mg/l 20 Mar 2026
Temperature of Water 0076 River water 30 Nov 2023 – Jun 2026 10.9 °C 15 Jun 2026
pH 0061 River water 30 Nov 2023 – Jun 2026 8.3 15 Jun 2026
Ammoniacal Nitrogen as N 0111 River water 13 Jul 2024 – Mar 2026 below 0.03 mg/l 20 Mar 2026
Orthophosphate, reactive as P 0180 River water 13 Jul 2024 – Mar 2026 below 0.01 mg/l 20 Mar 2026
Conductivity at 25 C 0077 River water 30 Nov 2023 – Jun 2026 224 µS/cm 15 Jun 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 13 Jul 2024 – Mar 2026 97 mg/l 20 Mar 2026
Aluminium 6057 River water 14 Jul 2024 – Mar 2026 30 µg/l 20 Mar 2026
Aluminium, Dissolved 6037 River water 14 Jul 2024 – Mar 2026 23 µg/l 20 Mar 2026
Barium 6062 River water 13 Jul 2024 – Mar 2026 230 µg/l 20 Mar 2026
Barium, Dissolved 9446 River water 27 Nov 2023 – Jun 2026 280 µg/l 15 Jun 2026
Boron 6059 River water 13 Jul 2024 – Mar 2026 below 100 µg/l 20 Mar 2026
Boron, Dissolved 9447 River water 29 Nov 2023 – Jun 2026 below 100 µg/l 15 Jun 2026
Cadmium 0108 River water 30 Nov 2023 – Jun 2026 1.9 µg/l 15 Jun 2026
Cadmium, Dissolved 0106 River water 30 Nov 2023 – Jun 2026 1.9 µg/l 15 Jun 2026
Calcium 0241 River water 16 Apr 2024 – Mar 2026 37 mg/l 20 Mar 2026
Calcium, Dissolved 0239 River water 27 Nov 2023 – Jun 2026 42 mg/l 15 Jun 2026
Carbon, Organic, Dissolved as C :- {DOC} 0301 River water 24 Nov 2023 – Jun 2026 1.7 mg/l 15 Jun 2026
Chloride 0172 River water 13 Jul 2024 – Mar 2026 6.4 mg/l 20 Mar 2026
Chromium 3164 River water 14 Jul 2024 – Mar 2026 below 0.5 µg/l 20 Mar 2026
Chromium, Dissolved 3409 River water 16 Apr 2024 – Mar 2026 below 0.5 µg/l 20 Mar 2026
Copper 6452 River water 30 Nov 2023 – Jun 2026 below 1 µg/l 15 Jun 2026
Copper, Dissolved 6450 River water 30 Nov 2023 – Jun 2026 below 1 µg/l 15 Jun 2026
Hardness, Total as CaCO3 0158 River water 30 Nov 2023 – Jun 2026 134 mg/l 15 Jun 2026
Ionic Balance 7044 River water 8 Feb 2025 – Mar 2026 0.78% 20 Mar 2026
Iron 6051 River water 15 Apr 2024 – Mar 2026 below 30 µg/l 20 Mar 2026
Iron, Dissolved 6460 River water 27 Nov 2023 – Jun 2026 below 30 µg/l 15 Jun 2026
Lead 0050 River water 30 Nov 2023 – Jun 2026 26 µg/l 15 Jun 2026
Lead, Dissolved 0052 River water 30 Nov 2023 – Jun 2026 24 µg/l 15 Jun 2026
Lithium 6064 River water 13 Jul 2024 – Mar 2026 below 100 µg/l 20 Mar 2026
Lithium, Dissolved 4201 River water 29 Nov 2023 – Jun 2026 below 100 µg/l 15 Jun 2026
Magnesium 0237 River water 16 Apr 2024 – Mar 2026 5.6 mg/l 20 Mar 2026
Magnesium, Dissolved 0235 River water 27 Nov 2023 – Jun 2026 7 mg/l 15 Jun 2026
Manganese 6050 River water 13 Jul 2024 – Mar 2026 below 10 µg/l 20 Mar 2026
Manganese, Dissolved 6458 River water 28 Nov 2023 – Jun 2026 below 10 µg/l 15 Jun 2026
National Grid Reference : Whole : Field report 7434 River water 5 Mar 2024 – Dec 2024 1 unitless value 19 Dec 2024
Nickel 6462 River water 30 Nov 2023 – Jun 2026 below 1 µg/l 15 Jun 2026
Nickel, Dissolved 3410 River water 30 Nov 2023 – Jun 2026 below 1 µg/l 15 Jun 2026
Nitrite as N 0118 River water 13 Jul 2024 – Mar 2026 below 0.004 mg/l 20 Mar 2026
Nitrogen, Total Oxidised as N 0116 River water 13 Jul 2024 – Mar 2026 0.61 mg/l 20 Mar 2026
pH : In Situ 3169 River water 12 Mar 2025 – Jun 2026 8.18 15 Jun 2026
Potassium 0211 River water 13 Jul 2024 – Mar 2026 0.81 mg/l 20 Mar 2026
Potassium, Dissolved 0209 River water 27 Nov 2023 – Jun 2026 0.86 mg/l 15 Jun 2026
Salinity : In Situ 7608 River water 7 Nov 2023 – Jun 2024 0 parts per thousand 20 Jun 2024
Silica, reactive as SiO2 0182 River water 13 Jul 2024 – Mar 2026 5.5 mg/l 20 Mar 2026
Sodium 0207 River water 13 Jul 2024 – Mar 2026 4.3 mg/l 20 Mar 2026
Sodium, Dissolved 0205 River water 27 Nov 2023 – Jun 2026 4.6 mg/l 15 Jun 2026
Solids, Suspended at 105 C 0135 River water 28 Nov 2023 – Jun 2026 below 3 mg/l 15 Jun 2026
Strontium 6063 River water 13 Jul 2024 – Mar 2026 140 µg/l 20 Mar 2026
Strontium, Filtered 6693 River water 27 Nov 2023 – Jun 2026 180 µg/l 15 Jun 2026
Sulphate as SO4 0183 River water 8 Feb 2025 – Mar 2026 15 mg/l 20 Mar 2026
Sulphate, Dissolved as SO4 7859 River water 14 Nov 2023 – Jun 2026 19 mg/l 15 Jun 2026
Visible oil or grease, significant trace: Present/Not found (1/0) 0664 River water 7 Nov 2023 – Jun 2024 Not found 20 Jun 2024
Zinc 6455 River water 30 Nov 2023 – Jun 2026 100 µg/l 15 Jun 2026
Zinc, Dissolved 3408 River water 30 Nov 2023 – Jun 2026 100 µg/l 15 Jun 2026

FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.

Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.

Contains OS data © Crown copyright and database rights 2026.