Whiston/Longnor Brook - Whiston Mill
EA name: WHISTON/LONGNOR BROOK - WHISTON MILL
Environment Agency sampling point MD-71363300 · 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
- 1 Sep 2026, 10:0430 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 33 since 9 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 390134, 314403As published, to the nearest 1 m. Open in a map
- River, by its own name
- Whiston Longnor Brook
- River, by the map
- Whiston BrookPlaced on a river whose name partly matches its own, 2 m from the line.
- Next gauge downstream
- Penkridge On the River Penk · 2.6 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (33 samples)
2 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
63.8%
Sampled 1 Sep 2026, 30 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:04 | 63.8 | 63.8% |
| 12 Jun 2026, 10:37 | 70.3 | 70.3% |
| 28 May 2026, 12:15 | 78.6 | 78.6% |
| 9 Apr 2026, 11:21 | 82.2 | 82.2% |
| 19 Mar 2026, 13:58 | 86.7 | 86.7% |
| 6 Feb 2026, 12:35 | 82.1 | 82.1% |
| 22 Jan 2026, 09:57 | 70.1 | 70.1% |
| 15 Dec 2025, 12:36 | 79.3 | 79.3% |
| 6 Nov 2025, 14:46 | 94 | 94% |
| 21 Oct 2025, 10:15 | 74.1 | 74.1% |
| 30 Sep 2025, 13:26 | 83.7 | 83.7% |
| 7 Aug 2025, 13:20 | 91.2 | 91.2% |
| 15 Jul 2025, 12:16 | 87.2 | 87.2% |
| 10 Jun 2025, 11:31 | 88.5 | 88.5% |
| 6 May 2025, 12:36 | 105.4 | 105.4% |
| 11 Apr 2025, 12:54 | 105 | 105% |
| 26 Mar 2025, 12:36 | 93.3 | 93.3% |
| 11 Feb 2025, 13:50 | 88.9 | 88.9% |
| 14 Jan 2025, 12:46 | 89.9 | 89.9% |
| 5 Nov 2024, 11:54 | 82.6 | 82.6% |
| 15 Oct 2024, 13:53 | 83.3 | 83.3% |
| 26 Sep 2024, 11:51 | 89.8 | 89.8% |
| 14 Aug 2024, 13:43 | 84 | 84% |
| 25 Jul 2024, 12:59 | 89.4 | 89.4% |
| 26 Jun 2024, 14:22 | 99.8 | 99.8% |
| 8 Mar 2024, 08:16 | 91 | 91% |
| 8 Feb 2024, 10:30 | 90.6 | 90.6% |
| 9 Jan 2024, 10:30 | 88 | 88% |
| 4 Dec 2023, 09:10 | 90 | 90% |
| 2 Nov 2023, 10:36 | 92 | 92% |
| 9 Oct 2023, 10:39 | 74.2 | 74.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.5 mg/l
Sampled 1 Sep 2026, 30 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:04 | 6.5 | 6.5 mg/l |
| 12 Jun 2026, 10:37 | 7.34 | 7.34 mg/l |
| 28 May 2026, 12:15 | 7.58 | 7.58 mg/l |
| 9 Apr 2026, 11:21 | 8.94 | 8.94 mg/l |
| 19 Mar 2026, 13:58 | 9.77 | 9.77 mg/l |
| 6 Feb 2026, 12:35 | 10.4 | 10.4 mg/l |
| 22 Jan 2026, 09:57 | 8.41 | 8.41 mg/l |
| 15 Dec 2025, 12:36 | 9.13 | 9.13 mg/l |
| 6 Nov 2025, 14:46 | 10.1 | 10.1 mg/l |
| 21 Oct 2025, 10:15 | 7.99 | 7.99 mg/l |
| 30 Sep 2025, 13:26 | 9.17 | 9.17 mg/l |
| 7 Aug 2025, 13:20 | 9.11 | 9.11 mg/l |
| 15 Jul 2025, 12:16 | 8.77 | 8.77 mg/l |
| 10 Jun 2025, 11:31 | 9.1 | 9.1 mg/l |
| 6 May 2025, 12:36 | 11.7 | 11.7 mg/l |
| 11 Apr 2025, 12:54 | 11.3 | 11.3 mg/l |
| 26 Mar 2025, 12:36 | 10.6 | 10.6 mg/l |
| 11 Feb 2025, 13:50 | 11.2 | 11.2 mg/l |
| 14 Jan 2025, 12:46 | 11 | 11 mg/l |
| 5 Nov 2024, 11:54 | 9.15 | 9.15 mg/l |
| 15 Oct 2024, 13:53 | 9.15 | 9.15 mg/l |
| 26 Sep 2024, 11:51 | 9.33 | 9.33 mg/l |
| 14 Aug 2024, 13:43 | 8.29 | 8.29 mg/l |
| 25 Jul 2024, 12:59 | 8.65 | 8.65 mg/l |
| 26 Jun 2024, 14:22 | 9.11 | 9.11 mg/l |
| 8 Mar 2024, 08:16 | 11.3 | 11.3 mg/l |
| 8 Feb 2024, 10:30 | 11.6 | 11.6 mg/l |
| 9 Jan 2024, 10:30 | 11.2 | 11.2 mg/l |
| 4 Dec 2023, 09:10 | 11.4 | 11.4 mg/l |
| 2 Nov 2023, 10:36 | 10.1 | 10.1 mg/l |
| 9 Oct 2023, 10:39 | 7.7 | 7.7 mg/l |
Water temperature
code 0076 · °C
14.4 °C
Sampled 1 Sep 2026, 30 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:04 | 14.4 | 14.4 °C |
| 12 Jun 2026, 10:37 | 13.3 | 13.3 °C |
| 28 May 2026, 12:15 | 17 | 17 °C |
| 9 Apr 2026, 11:21 | 11.5 | 11.5 °C |
| 19 Mar 2026, 13:58 | 10 | 10 °C |
| 6 Feb 2026, 12:35 | 5.2 | 5.2 °C |
| 22 Jan 2026, 09:57 | 7.4 | 7.4 °C |
| 15 Dec 2025, 12:36 | 9.1 | 9.1 °C |
| 6 Nov 2025, 14:46 | 12 | 12 °C |
| 21 Oct 2025, 10:15 | 11.9 | 11.9 °C |
| 30 Sep 2025, 13:26 | 11.2 | 11.2 °C |
| 7 Aug 2025, 13:20 | 15.3 | 15.3 °C |
| 15 Jul 2025, 12:16 | 15 | 15 °C |
| 10 Jun 2025, 11:31 | 14 | 14 °C |
| 6 May 2025, 12:36 | 10.8 | 10.8 °C |
| 11 Apr 2025, 12:54 | 12.1 | 12.1 °C |
| 26 Mar 2025, 12:36 | 9.5 | 9.5 °C |
| 11 Feb 2025, 13:50 | 5.4 | 5.4 °C |
| 14 Jan 2025, 12:46 | 6.6 | 6.6 °C |
| 5 Nov 2024, 11:54 | 10.7 | 10.7 °C |
| 15 Oct 2024, 13:53 | 11.1 | 11.1 °C |
| 26 Sep 2024, 11:51 | 13.5 | 13.5 °C |
| 14 Aug 2024, 13:43 | 15.9 | 15.9 °C |
| 25 Jul 2024, 12:59 | 16.8 | 16.8 °C |
| 26 Jun 2024, 14:22 | 19.7 | 19.7 °C |
| 8 Mar 2024, 08:16 | 5.9 | 5.9 °C |
| 8 Feb 2024, 10:30 | 5 | 5 °C |
| 9 Jan 2024, 10:30 | 5 | 5 °C |
| 4 Dec 2023, 09:10 | 5.2 | 5.2 °C |
| 2 Nov 2023, 10:36 | 11 | 11 °C |
| 9 Oct 2023, 10:39 | 13.6 | 13.6 °C |
pH
code 0061
7.72
Sampled 1 Sep 2026, 30 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:04 | 7.72 | 7.72 |
| 12 Jun 2026, 10:37 | 7.84 | 7.84 |
| 28 May 2026, 12:15 | 7.76 | 7.76 |
| 9 Apr 2026, 11:21 | 8.05 | 8.05 |
| 19 Mar 2026, 13:58 | 8.02 | 8.02 |
| 6 Feb 2026, 12:35 | 7.66 | 7.66 |
| 22 Jan 2026, 09:57 | 7.47 | 7.47 |
| 15 Dec 2025, 12:36 | 7.63 | 7.63 |
| 6 Nov 2025, 14:46 | 7.75 | 7.75 |
| 21 Oct 2025, 10:15 | 7.8 | 7.8 |
| 30 Sep 2025, 13:26 | 8.14 | 8.14 |
| 7 Aug 2025, 13:20 | 7.89 | 7.89 |
| 15 Jul 2025, 12:16 | 7.81 | 7.81 |
| 10 Jun 2025, 11:31 | 7.88 | 7.88 |
| 6 May 2025, 12:36 | 8.07 | 8.07 |
| 11 Apr 2025, 12:54 | 8.1 | 8.1 |
| 26 Mar 2025, 12:36 | 7.95 | 7.95 |
| 11 Feb 2025, 13:50 | 7.89 | 7.89 |
| 14 Jan 2025, 12:46 | 7.86 | 7.86 |
| 5 Nov 2024, 11:54 | 7.79 | 7.79 |
| 15 Oct 2024, 13:53 | 7.69 | 7.69 |
| 26 Sep 2024, 11:51 | 7.63 | 7.63 |
| 14 Aug 2024, 13:43 | 7.81 | 7.81 |
| 25 Jul 2024, 12:59 | 7.99 | 7.99 |
| 26 Jun 2024, 14:22 | 7.96 | 7.96 |
| 8 Mar 2024, 08:16 | 7.88 | 7.88 |
| 8 Feb 2024, 10:30 | 7.95 | 7.95 |
| 9 Jan 2024, 10:30 | 8.34 | 8.34 |
| 4 Dec 2023, 09:10 | 7.69 | 7.69 |
| 2 Nov 2023, 10:36 | 7.81 | 7.81 |
| 9 Oct 2023, 10:39 | 7.85 | 7.85 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.067 mg/l
Sampled 1 Sep 2026, 30 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:04 | 0.067 | 0.067 mg/l |
| 12 Jun 2026, 10:37 | 0.81 | 0.81 mg/l |
| 28 May 2026, 12:15 | 0.069 | 0.069 mg/l |
| 9 Apr 2026, 11:21 | 0.067 | 0.067 mg/l |
| 19 Mar 2026, 13:58 | 0.076 | 0.076 mg/l |
| 6 Feb 2026, 12:35 | 0.38 | 0.38 mg/l |
| 22 Jan 2026, 09:57 | 0.098 | 0.098 mg/l |
| 15 Dec 2025, 12:36 | 0.06 | 0.06 mg/l |
| 6 Nov 2025, 14:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Oct 2025, 10:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Sep 2025, 13:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Aug 2025, 13:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2025, 12:16 | 0.046 | 0.046 mg/l |
| 10 Jun 2025, 11:31 | 0.038 | 0.038 mg/l |
| 6 May 2025, 12:36 | 0.033 | 0.033 mg/l |
| 11 Apr 2025, 12:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Mar 2025, 12:36 | 0.044 | 0.044 mg/l |
| 11 Feb 2025, 13:50 | 0.12 | 0.12 mg/l |
| 14 Jan 2025, 12:46 | 0.23 | 0.23 mg/l |
| 5 Nov 2024, 11:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Oct 2024, 13:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Sep 2024, 11:51 | 0.064 | 0.064 mg/l |
| 14 Aug 2024, 13:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jul 2024, 12:59 | 0.037 | 0.037 mg/l |
| 26 Jun 2024, 14:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Mar 2024, 08:16 | 0.12 | 0.12 mg/l |
| 8 Feb 2024, 10:30 | 0.093 | 0.093 mg/l |
| 9 Jan 2024, 10:30 | 0.17 | 0.17 mg/l |
| 4 Dec 2023, 09:10 | 0.34 | 0.34 mg/l |
| 2 Nov 2023, 10:36 | 0.081 | 0.081 mg/l |
| 9 Oct 2023, 10:39 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
7.67 mg/l
Sampled 1 Sep 2026, 30 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:04 | 7.67 | 7.67 mg/l |
| 12 Jun 2026, 10:37 | 6.34 | 6.34 mg/l |
| 28 May 2026, 12:15 | 7.96 | 7.96 mg/l |
| 9 Apr 2026, 11:21 | 7.43 | 7.43 mg/l |
| 19 Mar 2026, 13:58 | 6.54 | 6.54 mg/l |
| 6 Feb 2026, 12:35 | 4.76 | 4.76 mg/l |
| 22 Jan 2026, 09:57 | 11.9 | 11.9 mg/l |
| 15 Dec 2025, 12:36 | 9.82 | 9.82 mg/l |
| 6 Nov 2025, 14:46 | 6.78 | 6.78 mg/l |
| 21 Oct 2025, 10:15 | 9.18 | 9.18 mg/l |
| 30 Sep 2025, 13:26 | 8.87 | 8.87 mg/l |
| 7 Aug 2025, 13:20 | 9.38 | 9.38 mg/l |
| 15 Jul 2025, 12:16 | 11 | 11 mg/l |
| 10 Jun 2025, 11:31 | 8.26 | 8.26 mg/l |
| 6 May 2025, 12:36 | 8.16 | 8.16 mg/l |
| 11 Apr 2025, 12:54 | 8.97 | 8.97 mg/l |
| 26 Mar 2025, 12:36 | 7.76 | 7.76 mg/l |
| 11 Feb 2025, 13:50 | 7.04 | 7.04 mg/l |
| 14 Jan 2025, 12:46 | 6.55 | 6.55 mg/l |
| 5 Nov 2024, 11:54 | 6.47 | 6.47 mg/l |
| 15 Oct 2024, 13:53 | 6.87 | 6.87 mg/l |
| 26 Sep 2024, 11:51 | 9.35 | 9.35 mg/l |
| 14 Aug 2024, 13:43 | 8.19 | 8.19 mg/l |
| 25 Jul 2024, 12:59 | 8.92 | 8.92 mg/l |
| 26 Jun 2024, 14:22 | 7.97 | 7.97 mg/l |
| 8 Mar 2024, 08:16 | 6.84 | 6.84 mg/l |
| 9 Jan 2024, 10:30 | 7.03 | 7.03 mg/l |
| 4 Dec 2023, 09:10 | 5.36 | 5.36 mg/l |
| 2 Nov 2023, 10:36 | 9.04 | 9.04 mg/l |
| 9 Oct 2023, 10:39 | 7.29 | 7.29 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.31 mg/l
Sampled 1 Sep 2026, 30 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:04 | 0.31 | 0.31 mg/l |
| 12 Jun 2026, 10:37 | 0.46 | 0.46 mg/l |
| 28 May 2026, 12:15 | 0.43 | 0.43 mg/l |
| 9 Apr 2026, 11:21 | 0.21 | 0.21 mg/l |
| 19 Mar 2026, 13:58 | 0.26 | 0.26 mg/l |
| 6 Feb 2026, 12:35 | 0.3 | 0.3 mg/l |
| 22 Jan 2026, 09:57 | 0.14 | 0.14 mg/l |
| 15 Dec 2025, 12:36 | 0.2 | 0.2 mg/l |
| 6 Nov 2025, 14:46 | 0.13 | 0.13 mg/l |
| 21 Oct 2025, 10:15 | 0.27 | 0.27 mg/l |
| 30 Sep 2025, 13:26 | 0.24 | 0.24 mg/l |
| 7 Aug 2025, 13:20 | 0.29 | 0.29 mg/l |
| 15 Jul 2025, 12:16 | 0.36 | 0.36 mg/l |
| 10 Jun 2025, 11:31 | 0.27 | 0.27 mg/l |
| 6 May 2025, 12:36 | 0.21 | 0.21 mg/l |
| 11 Apr 2025, 12:54 | 0.16 | 0.16 mg/l |
| 26 Mar 2025, 12:36 | 0.14 | 0.14 mg/l |
| 11 Feb 2025, 13:50 | 0.13 | 0.13 mg/l |
| 14 Jan 2025, 12:46 | 0.14 | 0.14 mg/l |
| 5 Nov 2024, 11:54 | 0.17 | 0.17 mg/l |
| 15 Oct 2024, 13:53 | 0.19 | 0.19 mg/l |
| 26 Sep 2024, 11:51 | 0.16 | 0.16 mg/l |
| 14 Aug 2024, 13:43 | 0.24 | 0.24 mg/l |
| 25 Jul 2024, 12:59 | 0.32 | 0.32 mg/l |
| 26 Jun 2024, 14:22 | 0.26 | 0.26 mg/l |
| 8 Mar 2024, 08:16 | 0.12 | 0.12 mg/l |
| 8 Feb 2024, 10:30 | 0.22 | 0.22 mg/l |
| 9 Jan 2024, 10:30 | 0.12 | 0.12 mg/l |
| 4 Dec 2023, 09:10 | 0.27 | 0.27 mg/l |
| 2 Nov 2023, 10:36 | 0.16 | 0.16 mg/l |
| 9 Oct 2023, 10:39 | 0.28 | 0.28 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1154 µS/cm
Sampled 1 Sep 2026, 30 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:04 | 1154 | 1154 µS/cm |
| 12 Jun 2026, 10:37 | 830 | 830 µS/cm |
| 28 May 2026, 12:15 | 1163 | 1163 µS/cm |
| 9 Apr 2026, 11:21 | 1021 | 1021 µS/cm |
| 19 Mar 2026, 13:58 | 830 | 830 µS/cm |
| 6 Feb 2026, 12:35 | 453 | 453 µS/cm |
| 22 Jan 2026, 09:57 | 484 | 484 µS/cm |
| 15 Dec 2025, 12:36 | 809 | 809 µS/cm |
| 6 Nov 2025, 14:46 | 793 | 793 µS/cm |
| 21 Oct 2025, 10:15 | 1219 | 1219 µS/cm |
| 30 Sep 2025, 13:26 | 1238 | 1238 µS/cm |
| 7 Aug 2025, 13:20 | 1252 | 1252 µS/cm |
| 15 Jul 2025, 12:16 | 1244 | 1244 µS/cm |
| 10 Jun 2025, 11:31 | 1164 | 1164 µS/cm |
| 6 May 2025, 12:36 | 1154 | 1154 µS/cm |
| 11 Apr 2025, 12:54 | 1098 | 1098 µS/cm |
| 26 Mar 2025, 12:36 | 1069 | 1069 µS/cm |
| 11 Feb 2025, 13:50 | 871 | 871 µS/cm |
| 14 Jan 2025, 12:46 | 759 | 759 µS/cm |
| 5 Nov 2024, 11:54 | 922 | 922 µS/cm |
| 15 Oct 2024, 13:53 | 835 | 835 µS/cm |
| 26 Sep 2024, 11:51 | 803 | 803 µS/cm |
| 14 Aug 2024, 13:43 | 799 | 799 µS/cm |
| 25 Jul 2024, 12:59 | 1101 | 1101 µS/cm |
| 26 Jun 2024, 14:22 | 1093 | 1093 µS/cm |
| 8 Mar 2024, 08:16 | 851 | 851 µS/cm |
| 8 Feb 2024, 10:30 | 704 | 704 µS/cm |
| 9 Jan 2024, 10:30 | 543 | 543 µS/cm |
| 4 Dec 2023, 09:10 | 553 | 553 µS/cm |
| 2 Nov 2023, 10:36 | 721 | 721 µS/cm |
| 9 Oct 2023, 10:39 | 1167 | 1167 µS/cm |
Everything measured here
13 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 13 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 31 | Oct 2023 – Sep 2026 | 63.8% 1 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 31 | Oct 2023 – Sep 2026 | 6.5 mg/l 1 Sep 2026 |
| Temperature of Water 0076 | River water | 31 | Oct 2023 – Sep 2026 | 14.4 °C 1 Sep 2026 |
| pH 0061 | River water | 31 | Oct 2023 – Sep 2026 | 7.72 1 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 31 | Oct 2023 – Sep 2026 | 0.067 mg/l 1 Sep 2026 |
| Nitrate as N 0117 | River water | 30 | Oct 2023 – Sep 2026 | 7.67 mg/l 1 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 31 | Oct 2023 – Sep 2026 | 0.31 mg/l 1 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 31 | Oct 2023 – Sep 2026 | 1154 µS/cm 1 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 31 | Oct 2023 – Sep 2026 | 230 mg/l 1 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 31 | Oct 2023 – Sep 2026 | 0.00089 mg/l 1 Sep 2026 |
| Nitrite as N 0118 | River water | 30 | Oct 2023 – Sep 2026 | 0.13 mg/l 1 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 31 | Oct 2023 – Sep 2026 | 7.8 mg/l 1 Sep 2026 |
| No flow /No sample 7668 | River water | 2 | Jul 2026 – Aug 2026 | No flow/discharge at sampling point 17 Aug 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.