South Dike and Grayfleet Drain
EA name: SOUTH DIKE AND GRAYFLEET DRAIN (also listed as “SOUTH DIKE AND GRAYFLEET DRAIN - GB105029061680”)
Environment Agency sampling point AN-CREEK · 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
- 11 Sep 2026, 11:0520 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 34 since 2 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 545576, 393455As published, to the nearest 1 m. Open in a map
- River, by its own name
- South Dike Grayfleet Drain
- River, by the map
- Not placedTwo watercourses within reach (2 m and 9 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
- Environmental monitoring statutory (EU directives) (25 samples)
Monitoring (national agency policy) (9 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
95.6%
Sampled 11 Sep 2026, 20 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:05 | 95.6 | 95.6% |
| 26 Aug 2026, 10:27 | 74.3 | 74.3% |
| 2 Jul 2026, 11:58 | 85 | 85% |
| 8 Jun 2026, 10:52 | 84.4 | 84.4% |
| 14 May 2026, 07:39 | 101.1 | 101.1% |
| 20 Apr 2026, 10:28 | 107.7 | 107.7% |
| 12 Mar 2026, 12:58 | 105.8 | 105.8% |
| 5 Feb 2026, 11:31 | 95.7 | 95.7% |
| 6 Jan 2026, 12:16 | 92.8 | 92.8% |
| 3 Dec 2025, 10:51 | 85.2 | 85.2% |
| 3 Nov 2025, 12:12 | 97.3 | 97.3% |
| 6 Oct 2025, 10:02 | 97.1 | 97.1% |
| 9 Sep 2025, 10:20 | 88.9 | 88.9% |
| 5 Aug 2025, 09:03 | 86.4 | 86.4% |
| 11 Jul 2025, 10:38 | 86.2 | 86.2% |
| 4 Jun 2025, 08:01 | 94.4 | 94.4% |
| 13 May 2025, 09:20 | 104.7 | 104.7% |
| 1 Apr 2025, 08:33 | 99.5 | 99.5% |
| 3 Mar 2025, 08:45 | 112.5 | 112.5% |
| 3 Feb 2025, 11:56 | 97.6 | 97.6% |
| 20 Jan 2025, 10:10 | 95.2 | 95.2% |
| 3 Dec 2024, 10:40 | 88.7 | 88.7% |
| 18 Nov 2024, 12:09 | 97.3 | 97.3% |
| 16 Oct 2024, 10:03 | 91.6 | 91.6% |
| 16 Sep 2024, 10:49 | 96.4 | 96.4% |
| 19 Aug 2024, 08:08 | 94.3 | 94.3% |
| 15 Jul 2024, 08:13 | 77.4 | 77.4% |
| 18 Jun 2024, 10:31 | 72.1 | 72.1% |
| 5 Mar 2024, 11:44 | 87.4 | 87.4% |
| 1 Feb 2024, 09:59 | 94.7 | 94.7% |
| 4 Jan 2024, 08:34 | 81.5 | 81.5% |
| 1 Dec 2023, 10:12 | 79.6 | 79.6% |
| 9 Nov 2023, 08:09 | 69.4 | 69.4% |
| 2 Oct 2023, 08:26 | 85.7 | 85.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.45 mg/l
Sampled 11 Sep 2026, 20 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:05 | 9.45 | 9.45 mg/l |
| 26 Aug 2026, 10:27 | 6.92 | 6.92 mg/l |
| 2 Jul 2026, 11:58 | 7.86 | 7.86 mg/l |
| 8 Jun 2026, 10:52 | 8.29 | 8.29 mg/l |
| 14 May 2026, 07:39 | 11.3 | 11.3 mg/l |
| 20 Apr 2026, 10:28 | 11.5 | 11.5 mg/l |
| 12 Mar 2026, 12:58 | 12.3 | 12.3 mg/l |
| 5 Feb 2026, 11:31 | 12.3 | 12.3 mg/l |
| 6 Jan 2026, 12:16 | 13.1 | 13.1 mg/l |
| 3 Dec 2025, 10:51 | 10.3 | 10.3 mg/l |
| 3 Nov 2025, 12:12 | 10.9 | 10.9 mg/l |
| 6 Oct 2025, 10:02 | 10.4 | 10.4 mg/l |
| 9 Sep 2025, 10:20 | 8.75 | 8.75 mg/l |
| 5 Aug 2025, 09:03 | 8.62 | 8.62 mg/l |
| 11 Jul 2025, 10:38 | 7.87 | 7.87 mg/l |
| 4 Jun 2025, 08:01 | 9.54 | 9.54 mg/l |
| 13 May 2025, 09:20 | 10.2 | 10.2 mg/l |
| 1 Apr 2025, 08:33 | 11.5 | 11.5 mg/l |
| 3 Mar 2025, 08:45 | 14.1 | 14.1 mg/l |
| 3 Feb 2025, 11:56 | 12.7 | 12.7 mg/l |
| 20 Jan 2025, 10:10 | 12.2 | 12.2 mg/l |
| 3 Dec 2024, 10:40 | 10.6 | 10.6 mg/l |
| 18 Nov 2024, 12:09 | 12.4 | 12.4 mg/l |
| 16 Oct 2024, 10:03 | 9.89 | 9.89 mg/l |
| 16 Sep 2024, 10:49 | 10 | 10 mg/l |
| 19 Aug 2024, 08:08 | 9.4 | 9.4 mg/l |
| 15 Jul 2024, 08:13 | 7.77 | 7.77 mg/l |
| 18 Jun 2024, 10:31 | 7.1 | 7.1 mg/l |
| 5 Mar 2024, 11:44 | 10.5 | 10.5 mg/l |
| 1 Feb 2024, 09:59 | 12.1 | 12.1 mg/l |
| 4 Jan 2024, 08:34 | 9.9 | 9.9 mg/l |
| 1 Dec 2023, 10:12 | 10.6 | 10.6 mg/l |
| 9 Nov 2023, 08:09 | 8.29 | 8.29 mg/l |
| 2 Oct 2023, 08:26 | 8.62 | 8.62 mg/l |
Water temperature
code 0076 · °C
15.8 °C
Sampled 11 Sep 2026, 20 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:05 | 15.8 | 15.8 °C |
| 26 Aug 2026, 10:27 | 18.7 | 18.7 °C |
| 2 Jul 2026, 11:58 | 19 | 19 °C |
| 8 Jun 2026, 10:52 | 16.1 | 16.1 °C |
| 14 May 2026, 07:39 | 10.2 | 10.2 °C |
| 20 Apr 2026, 10:28 | 12.3 | 12.3 °C |
| 12 Mar 2026, 12:58 | 8.8 | 8.8 °C |
| 5 Feb 2026, 11:31 | 4.7 | 4.7 °C |
| 6 Jan 2026, 12:16 | 1.3 | 1.3 °C |
| 3 Dec 2025, 10:51 | 7 | 7 °C |
| 3 Nov 2025, 12:12 | 10.1 | 10.1 °C |
| 6 Oct 2025, 10:02 | 12.1 | 12.1 °C |
| 9 Sep 2025, 10:20 | 16 | 16 °C |
| 5 Aug 2025, 09:03 | 15.4 | 15.4 °C |
| 11 Jul 2025, 10:38 | 19.7 | 19.7 °C |
| 4 Jun 2025, 08:01 | 14.8 | 14.8 °C |
| 13 May 2025, 09:20 | 16.6 | 16.6 °C |
| 1 Apr 2025, 08:33 | 9.1 | 9.1 °C |
| 3 Mar 2025, 08:45 | 5.6 | 5.6 °C |
| 3 Feb 2025, 11:56 | 4.1 | 4.1 °C |
| 20 Jan 2025, 10:10 | 4.7 | 4.7 °C |
| 3 Dec 2024, 10:40 | 7.5 | 7.5 °C |
| 18 Nov 2024, 12:09 | 5 | 5 °C |
| 16 Oct 2024, 10:03 | 11.8 | 11.8 °C |
| 16 Sep 2024, 10:49 | 13.4 | 13.4 °C |
| 19 Aug 2024, 08:08 | 15.4 | 15.4 °C |
| 15 Jul 2024, 08:13 | 15.1 | 15.1 °C |
| 18 Jun 2024, 10:31 | 16 | 16 °C |
| 5 Mar 2024, 11:44 | 7.2 | 7.2 °C |
| 1 Feb 2024, 09:59 | 5 | 5 °C |
| 4 Jan 2024, 08:34 | 6.9 | 6.9 °C |
| 1 Dec 2023, 10:12 | 3.2 | 3.2 °C |
| 9 Nov 2023, 08:09 | 7.6 | 7.6 °C |
| 2 Oct 2023, 08:26 | 15 | 15 °C |
pH
code 0061
7.91
Sampled 11 Sep 2026, 20 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:05 | 7.91 | 7.91 |
| 26 Aug 2026, 10:27 | 7.53 | 7.53 |
| 2 Jul 2026, 11:58 | 7.73 | 7.73 |
| 8 Jun 2026, 10:52 | 7.71 | 7.71 |
| 14 May 2026, 07:39 | 8.26 | 8.26 |
| 20 Apr 2026, 10:28 | 8.1 | 8.1 |
| 12 Mar 2026, 12:58 | 8.34 | 8.34 |
| 5 Feb 2026, 11:31 | 8.11 | 8.11 |
| 6 Jan 2026, 12:16 | 7.95 | 7.95 |
| 3 Dec 2025, 10:51 | 8.02 | 8.02 |
| 6 Oct 2025, 10:02 | 7.88 | 7.88 |
| 9 Sep 2025, 10:20 | 7.72 | 7.72 |
| 5 Aug 2025, 09:03 | 7.85 | 7.85 |
| 11 Jul 2025, 10:38 | 7.63 | 7.63 |
| 4 Jun 2025, 08:01 | 7.86 | 7.86 |
| 13 May 2025, 09:20 | 7.95 | 7.95 |
| 1 Apr 2025, 08:33 | 8.05 | 8.05 |
| 3 Mar 2025, 08:45 | 8.27 | 8.27 |
| 3 Feb 2025, 11:56 | 8.17 | 8.17 |
| 20 Jan 2025, 10:10 | 8.24 | 8.24 |
| 3 Dec 2024, 10:40 | 8.15 | 8.15 |
| 18 Nov 2024, 12:09 | 8.01 | 8.01 |
| 16 Oct 2024, 10:03 | 7.96 | 7.96 |
| 16 Sep 2024, 10:49 | 7.73 | 7.73 |
| 19 Aug 2024, 08:08 | 7.95 | 7.95 |
| 15 Jul 2024, 08:13 | 7.71 | 7.71 |
| 18 Jun 2024, 10:31 | 7.76 | 7.76 |
| 5 Mar 2024, 11:44 | 8.06 | 8.06 |
| 1 Feb 2024, 09:59 | 8.24 | 8.24 |
| 4 Jan 2024, 08:34 | 7.89 | 7.89 |
| 1 Dec 2023, 10:12 | 7.8 | 7.8 |
| 9 Nov 2023, 08:09 | 7.72 | 7.72 |
| 2 Oct 2023, 08:26 | 7.68 | 7.68 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.24 mg/l
Sampled 11 Sep 2026, 20 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:05 | 0.24 | 0.24 mg/l |
| 26 Aug 2026, 10:27 | 0.59 | 0.59 mg/l |
| 2 Jul 2026, 11:58 | 0.41 | 0.41 mg/l |
| 8 Jun 2026, 10:52 | 0.46 | 0.46 mg/l |
| 14 May 2026, 07:39 | 0.32 | 0.32 mg/l |
| 20 Apr 2026, 10:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Mar 2026, 12:58 | 0.11 | 0.11 mg/l |
| 5 Feb 2026, 11:31 | 0.29 | 0.29 mg/l |
| 6 Jan 2026, 12:16 | 0.47 | 0.47 mg/l |
| 3 Dec 2025, 10:51 | 0.13 | 0.13 mg/l |
| 3 Nov 2025, 12:12 | 0.33 | 0.33 mg/l |
| 6 Oct 2025, 10:02 | 0.25 | 0.25 mg/l |
| 9 Sep 2025, 10:20 | 0.46 | 0.46 mg/l |
| 5 Aug 2025, 09:03 | 0.42 | 0.42 mg/l |
| 11 Jul 2025, 10:38 | 0.43 | 0.43 mg/l |
| 4 Jun 2025, 08:01 | 0.32 | 0.32 mg/l |
| 13 May 2025, 09:20 | 0.09 | 0.09 mg/l |
| 3 Mar 2025, 08:45 | 0.039 | 0.039 mg/l |
| 3 Feb 2025, 11:56 | 0.082 | 0.082 mg/l |
| 20 Jan 2025, 10:10 | 0.067 | 0.067 mg/l |
| 3 Dec 2024, 10:40 | 0.12 | 0.12 mg/l |
| 18 Nov 2024, 12:09 | 0.43 | 0.43 mg/l |
| 16 Oct 2024, 10:03 | 0.15 | 0.15 mg/l |
| 16 Sep 2024, 10:49 | 0.14 | 0.14 mg/l |
| 19 Aug 2024, 08:08 | 0.049 | 0.049 mg/l |
| 15 Jul 2024, 08:13 | 0.13 | 0.13 mg/l |
| 18 Jun 2024, 10:31 | 0.14 | 0.14 mg/l |
| 5 Mar 2024, 11:44 | 0.16 | 0.16 mg/l |
| 4 Jan 2024, 08:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Dec 2023, 10:12 | 0.088 | 0.088 mg/l |
| 9 Nov 2023, 08:09 | 0.087 | 0.087 mg/l |
| 2 Oct 2023, 08:26 | 0.16 | 0.16 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.193 mg/l
Sampled 11 Sep 2026, 20 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:05 | 0.193 | 0.193 mg/l |
| 26 Aug 2026, 10:27 | 0.172 | 0.172 mg/l |
| 2 Jul 2026, 11:58 | 0.244 | 0.244 mg/l |
| 8 Jun 2026, 10:52 | 0.209 | 0.209 mg/l |
| 14 May 2026, 07:39 | 0.188 | 0.188 mg/l |
| 20 Apr 2026, 10:28 | 9.36 | 9.36 mg/l |
| 12 Mar 2026, 12:58 | 5.64 | 5.64 mg/l |
| 5 Feb 2026, 11:31 | 6.91 | 6.91 mg/l |
| 6 Jan 2026, 12:16 | 1.41 | 1.41 mg/l |
| 3 Dec 2025, 10:51 | 14 | 14 mg/l |
| 3 Nov 2025, 12:12 | 0.196 | 0.196 mg/l |
| 6 Oct 2025, 10:02 | <0.196 | below 0.196 mg/l (not detected above this) |
| 9 Sep 2025, 10:20 | 0.192 | 0.192 mg/l |
| 5 Aug 2025, 09:03 | 0.195 | 0.195 mg/l |
| 11 Jul 2025, 10:38 | 0.194 | 0.194 mg/l |
| 4 Jun 2025, 08:01 | 0.195 | 0.195 mg/l |
| 13 May 2025, 09:20 | 5.75 | 5.75 mg/l |
| 3 Mar 2025, 08:45 | 8.28 | 8.28 mg/l |
| 3 Feb 2025, 11:56 | 3.88 | 3.88 mg/l |
| 20 Jan 2025, 10:10 | 9.98 | 9.98 mg/l |
| 3 Dec 2024, 10:40 | 5.35 | 5.35 mg/l |
| 18 Nov 2024, 12:09 | 0.983 | 0.983 mg/l |
| 16 Oct 2024, 10:03 | 3.05 | 3.05 mg/l |
| 16 Sep 2024, 10:49 | 0.286 | 0.286 mg/l |
| 19 Aug 2024, 08:08 | 7.35 | 7.35 mg/l |
| 15 Jul 2024, 08:13 | 3.53 | 3.53 mg/l |
| 18 Jun 2024, 10:31 | 6.38 | 6.38 mg/l |
| 5 Mar 2024, 11:44 | 6.05 | 6.05 mg/l |
| 4 Jan 2024, 08:34 | 2.99 | 2.99 mg/l |
| 1 Dec 2023, 10:12 | 6.68 | 6.68 mg/l |
| 9 Nov 2023, 08:09 | 8.42 | 8.42 mg/l |
| 2 Oct 2023, 08:26 | 3.37 | 3.37 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.066 mg/l
Sampled 11 Sep 2026, 20 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:05 | 0.066 | 0.066 mg/l |
| 26 Aug 2026, 10:27 | 0.16 | 0.16 mg/l |
| 2 Jul 2026, 11:58 | 0.025 | 0.025 mg/l |
| 8 Jun 2026, 10:52 | 0.026 | 0.026 mg/l |
| 14 May 2026, 07:39 | 0.042 | 0.042 mg/l |
| 20 Apr 2026, 10:28 | 0.06 | 0.06 mg/l |
| 12 Mar 2026, 12:58 | 0.049 | 0.049 mg/l |
| 5 Feb 2026, 11:31 | 0.063 | 0.063 mg/l |
| 6 Jan 2026, 12:16 | 0.06 | 0.06 mg/l |
| 3 Dec 2025, 10:51 | 0.064 | 0.064 mg/l |
| 3 Nov 2025, 12:12 | 0.05 | 0.05 mg/l |
| 6 Oct 2025, 10:02 | 0.024 | 0.024 mg/l |
| 9 Sep 2025, 10:20 | 0.048 | 0.048 mg/l |
| 5 Aug 2025, 09:03 | 0.02 | 0.02 mg/l |
| 11 Jul 2025, 10:38 | 0.025 | 0.025 mg/l |
| 4 Jun 2025, 08:01 | <0.01 | below 0.01 mg/l (not detected above this) |
| 13 May 2025, 09:20 | 0.11 | 0.11 mg/l |
| 3 Mar 2025, 08:45 | 0.063 | 0.063 mg/l |
| 3 Feb 2025, 11:56 | 0.062 | 0.062 mg/l |
| 20 Jan 2025, 10:10 | 0.027 | 0.027 mg/l |
| 3 Dec 2024, 10:40 | 0.047 | 0.047 mg/l |
| 18 Nov 2024, 12:09 | 0.035 | 0.035 mg/l |
| 16 Oct 2024, 10:03 | 0.034 | 0.034 mg/l |
| 16 Sep 2024, 10:49 | 0.021 | 0.021 mg/l |
| 19 Aug 2024, 08:08 | 0.035 | 0.035 mg/l |
| 15 Jul 2024, 08:13 | 0.053 | 0.053 mg/l |
| 18 Jun 2024, 10:31 | 0.029 | 0.029 mg/l |
| 5 Mar 2024, 11:44 | 0.04 | 0.04 mg/l |
| 4 Jan 2024, 08:34 | 0.11 | 0.11 mg/l |
| 1 Dec 2023, 10:12 | 0.051 | 0.051 mg/l |
| 9 Nov 2023, 08:09 | 0.05 | 0.05 mg/l |
| 2 Oct 2023, 08:26 | 0.2 | 0.2 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
14594 µS/cm
Sampled 11 Sep 2026, 20 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:05 | 14594 | 14594 µS/cm |
| 26 Aug 2026, 10:27 | 32093 | 32093 µS/cm |
| 2 Jul 2026, 11:58 | 27662 | 27662 µS/cm |
| 8 Jun 2026, 10:52 | 16390 | 16390 µS/cm |
| 14 May 2026, 07:39 | 34842 | 34842 µS/cm |
| 20 Apr 2026, 10:28 | 2030 | 2030 µS/cm |
| 12 Mar 2026, 12:58 | 3646 | 3646 µS/cm |
| 5 Feb 2026, 11:31 | 5439 | 5439 µS/cm |
| 6 Jan 2026, 12:16 | 14967 | 14967 µS/cm |
| 3 Dec 2025, 10:51 | 1033 | 1033 µS/cm |
| 3 Nov 2025, 12:12 | 21864 | 21864 µS/cm |
| 6 Oct 2025, 10:02 | 27963 | 27963 µS/cm |
| 9 Sep 2025, 10:20 | 47585 | 47585 µS/cm |
| 5 Aug 2025, 09:03 | 26924 | 26924 µS/cm |
| 11 Jul 2025, 10:38 | 28656 | 28656 µS/cm |
| 4 Jun 2025, 08:01 | 16752 | 16752 µS/cm |
| 13 May 2025, 09:20 | 6848 | 6848 µS/cm |
| 1 Apr 2025, 08:33 | 4994 | 4994 µS/cm |
| 3 Mar 2025, 08:45 | 3266 | 3266 µS/cm |
| 3 Feb 2025, 11:56 | 3106 | 3106 µS/cm |
| 20 Jan 2025, 10:10 | 1353 | 1353 µS/cm |
| 3 Dec 2024, 10:40 | 3252 | 3252 µS/cm |
| 18 Nov 2024, 12:09 | 19068 | 19068 µS/cm |
| 16 Oct 2024, 10:03 | 11941 | 11941 µS/cm |
| 16 Sep 2024, 10:49 | 14312 | 14312 µS/cm |
| 19 Aug 2024, 08:08 | 5294 | 5294 µS/cm |
| 15 Jul 2024, 08:13 | 4478 | 4478 µS/cm |
| 18 Jun 2024, 10:31 | 1461 | 1461 µS/cm |
| 5 Mar 2024, 11:44 | 885 | 885 µS/cm |
| 1 Feb 2024, 09:59 | 2483 | 2483 µS/cm |
| 4 Jan 2024, 08:34 | 288 | 288 µS/cm |
| 1 Dec 2023, 10:12 | 3731 | 3731 µS/cm |
| 9 Nov 2023, 08:09 | 2476 | 2476 µS/cm |
| 2 Oct 2023, 08:26 | 8456 | 8456 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 | 34 | Oct 2023 – Sep 2026 | 95.6% 11 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 34 | Oct 2023 – Sep 2026 | 9.45 mg/l 11 Sep 2026 |
| Temperature of Water 0076 | River water | 34 | Oct 2023 – Sep 2026 | 15.8 °C 11 Sep 2026 |
| pH 0061 | River water | 33 | Oct 2023 – Sep 2026 | 7.91 11 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 32 | Oct 2023 – Sep 2026 | 0.24 mg/l 11 Sep 2026 |
| Nitrate as N 0117 | River water | 32 | Oct 2023 – Sep 2026 | 0.193 mg/l 11 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 32 | Oct 2023 – Sep 2026 | 0.066 mg/l 11 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 34 | Oct 2023 – Sep 2026 | 14594 µS/cm 11 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 33 | Oct 2023 – Sep 2026 | 200 mg/l 11 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 31 | Oct 2023 – Sep 2026 | 0.00546 mg/l 11 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 22 | Jun 2024 – May 2026 | 3.6 mg/l 14 May 2026 |
| Nitrite as N 0118 | River water | 32 | Oct 2023 – Sep 2026 | 0.0072 mg/l 11 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 32 | Oct 2023 – Sep 2026 | below 0.2 mg/l 11 Sep 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.