Chichester Flood Relief Channel
EA name: CHICHESTER FLOOD RELIEF CHANNEL (also listed as “RSN1805 CHICHESTER FLOOD RELIEF CHANNEL”)
Environment Agency sampling point SO-RSN1805 · 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
- 10 Aug 2026, 13:2552 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 34 since 5 Oct 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 489512, 103387As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- Forebridge RifePlaced by position alone, on a line whose map name differs from its own, 6 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Why it was sampled
- Monitoring (national agency policy) (34 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
99.1%
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 13:25 | 99.1 | 99.1% |
| 16 Jul 2026, 16:18 | 100.6 | 100.6% |
| 18 Jun 2026, 15:21 | 93 | 93% |
| 12 May 2026, 11:12 | 97 | 97% |
| 21 Apr 2026, 11:55 | 107.3 | 107.3% |
| 12 Mar 2026, 15:10 | 92.4 | 92.4% |
| 18 Feb 2026, 16:44 | 95.8 | 95.8% |
| 9 Dec 2025, 11:30 | 74.5 | 74.5% |
| 10 Nov 2025, 10:55 | 92.7 | 92.7% |
| 7 Oct 2025, 14:21 | 95.5 | 95.5% |
| 8 Sep 2025, 10:28 | 97.5 | 97.5% |
| 4 Aug 2025, 14:20 | 102.6 | 102.6% |
| 10 Jul 2025, 10:19 | 93 | 93% |
| 12 Jun 2025, 13:44 | 94.4 | 94.4% |
| 8 May 2025, 14:59 | 102.2 | 102.2% |
| 1 Apr 2025, 10:42 | 100.7 | 100.7% |
| 4 Mar 2025, 16:33 | 100.4 | 100.4% |
| 4 Feb 2025, 12:31 | 99.1 | 99.1% |
| 14 Jan 2025, 13:29 | 97.3 | 97.3% |
| 9 Dec 2024, 09:51 | 91.5 | 91.5% |
| 11 Nov 2024, 15:06 | 96.4 | 96.4% |
| 28 Oct 2024, 16:18 | 91.8 | 91.8% |
| 2 Sep 2024, 13:09 | 99.6 | 99.6% |
| 6 Aug 2024, 14:21 | 103.8 | 103.8% |
| 2 Jul 2024, 10:23 | 94.1 | 94.1% |
| 7 Jun 2024, 10:35 | 97.2 | 97.2% |
| 1 May 2024, 09:47 | 106.2 | 106.2% |
| 11 Apr 2024, 09:54 | 104.6 | 104.6% |
| 19 Mar 2024, 10:51 | 114.4 | 114.4% |
| 5 Feb 2024, 10:40 | 101.6 | 101.6% |
| 4 Jan 2024, 08:26 | 92.8 | 92.8% |
| 6 Dec 2023, 09:08 | 93.9 | 93.9% |
| 6 Nov 2023, 11:54 | 89 | 89% |
| 5 Oct 2023, 08:46 | 91.4 | 91.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.15 mg/l
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 13:25 | 9.15 | 9.15 mg/l |
| 16 Jul 2026, 16:18 | 8.74 | 8.74 mg/l |
| 18 Jun 2026, 15:21 | 8.62 | 8.62 mg/l |
| 12 May 2026, 11:12 | 9.77 | 9.77 mg/l |
| 21 Apr 2026, 11:55 | 11 | 11 mg/l |
| 12 Mar 2026, 15:10 | 10.2 | 10.2 mg/l |
| 18 Feb 2026, 16:44 | 11.4 | 11.4 mg/l |
| 9 Dec 2025, 11:30 | 8.04 | 8.04 mg/l |
| 10 Nov 2025, 10:55 | 9.7 | 9.7 mg/l |
| 7 Oct 2025, 14:21 | 9.68 | 9.68 mg/l |
| 8 Sep 2025, 10:28 | 9.63 | 9.63 mg/l |
| 4 Aug 2025, 14:20 | 9.53 | 9.53 mg/l |
| 10 Jul 2025, 10:19 | 8.72 | 8.72 mg/l |
| 12 Jun 2025, 13:44 | 9.23 | 9.23 mg/l |
| 8 May 2025, 14:59 | 10.2 | 10.2 mg/l |
| 1 Apr 2025, 10:42 | 11.3 | 11.3 mg/l |
| 4 Mar 2025, 16:33 | 11.5 | 11.5 mg/l |
| 4 Feb 2025, 12:31 | 11.7 | 11.7 mg/l |
| 14 Jan 2025, 13:29 | 11.8 | 11.8 mg/l |
| 9 Dec 2024, 09:51 | 10.6 | 10.6 mg/l |
| 11 Nov 2024, 15:06 | 10.3 | 10.3 mg/l |
| 28 Oct 2024, 16:18 | 9.37 | 9.37 mg/l |
| 2 Sep 2024, 13:09 | 9.33 | 9.33 mg/l |
| 6 Aug 2024, 14:21 | 9.47 | 9.47 mg/l |
| 2 Jul 2024, 10:23 | 9.03 | 9.03 mg/l |
| 7 Jun 2024, 10:35 | 9.33 | 9.33 mg/l |
| 1 May 2024, 09:47 | 11.1 | 11.1 mg/l |
| 11 Apr 2024, 09:54 | 11.2 | 11.2 mg/l |
| 19 Mar 2024, 10:51 | 12.6 | 12.6 mg/l |
| 5 Feb 2024, 10:40 | 11.6 | 11.6 mg/l |
| 4 Jan 2024, 08:26 | 10.8 | 10.8 mg/l |
| 6 Dec 2023, 09:08 | 11.4 | 11.4 mg/l |
| 6 Nov 2023, 11:54 | 9.5 | 9.5 mg/l |
| 5 Oct 2023, 08:46 | 9.52 | 9.52 mg/l |
Water temperature
code 0076 · °C
19.1 °C
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 13:25 | 19.1 | 19.1 °C |
| 16 Jul 2026, 16:18 | 22.2 | 22.2 °C |
| 18 Jun 2026, 15:21 | 18.9 | 18.9 °C |
| 12 May 2026, 11:12 | 14.9 | 14.9 °C |
| 21 Apr 2026, 11:55 | 14 | 14 °C |
| 12 Mar 2026, 15:10 | 10.7 | 10.7 °C |
| 18 Feb 2026, 16:44 | 7.7 | 7.7 °C |
| 9 Dec 2025, 11:30 | 11.8 | 11.8 °C |
| 10 Nov 2025, 10:55 | 13.2 | 13.2 °C |
| 7 Oct 2025, 14:21 | 14.6 | 14.6 °C |
| 8 Sep 2025, 10:28 | 15.8 | 15.8 °C |
| 4 Aug 2025, 14:20 | 18.8 | 18.8 °C |
| 10 Jul 2025, 10:19 | 18.3 | 18.3 °C |
| 12 Jun 2025, 13:44 | 16.3 | 16.3 °C |
| 8 May 2025, 14:59 | 15.2 | 15.2 °C |
| 1 Apr 2025, 10:42 | 10.3 | 10.3 °C |
| 4 Mar 2025, 16:33 | 9.4 | 9.4 °C |
| 4 Feb 2025, 12:31 | 8.2 | 8.2 °C |
| 14 Jan 2025, 13:29 | 7.1 | 7.1 °C |
| 9 Dec 2024, 09:51 | 8.7 | 8.7 °C |
| 11 Nov 2024, 15:06 | 12.2 | 12.2 °C |
| 28 Oct 2024, 16:18 | 14.3 | 14.3 °C |
| 2 Sep 2024, 13:09 | 18.4 | 18.4 °C |
| 6 Aug 2024, 14:21 | 19.7 | 19.7 °C |
| 2 Jul 2024, 10:23 | 17.2 | 17.2 °C |
| 7 Jun 2024, 10:35 | 17.2 | 17.2 °C |
| 1 May 2024, 09:47 | 13.4 | 13.4 °C |
| 11 Apr 2024, 09:54 | 12.1 | 12.1 °C |
| 19 Mar 2024, 10:51 | 11.1 | 11.1 °C |
| 5 Feb 2024, 10:40 | 9.6 | 9.6 °C |
| 4 Jan 2024, 08:26 | 8.7 | 8.7 °C |
| 6 Dec 2023, 09:08 | 7.1 | 7.1 °C |
| 6 Nov 2023, 11:54 | 12.3 | 12.3 °C |
| 5 Oct 2023, 08:46 | 13.4 | 13.4 °C |
pH
code 0061
8.44
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 13:25 | 8.44 | 8.44 |
| 16 Jul 2026, 16:18 | 8.17 | 8.17 |
| 18 Jun 2026, 15:21 | 7.95 | 7.95 |
| 12 May 2026, 11:12 | 7.87 | 7.87 |
| 21 Apr 2026, 11:55 | 8.06 | 8.06 |
| 12 Mar 2026, 15:10 | 8.2 | 8.2 |
| 18 Feb 2026, 16:44 | 7.96 | 7.96 |
| 9 Dec 2025, 11:30 | 7.57 | 7.57 |
| 10 Nov 2025, 10:55 | 8.02 | 8.02 |
| 7 Oct 2025, 14:21 | 8.24 | 8.24 |
| 8 Sep 2025, 10:28 | 8.04 | 8.04 |
| 4 Aug 2025, 14:20 | 8.22 | 8.22 |
| 10 Jul 2025, 10:19 | 8.87 | 8.87 |
| 12 Jun 2025, 13:44 | 8.23 | 8.23 |
| 8 May 2025, 14:59 | 8.23 | 8.23 |
| 1 Apr 2025, 10:42 | 8.04 | 8.04 |
| 4 Mar 2025, 16:33 | 7.89 | 7.89 |
| 4 Feb 2025, 12:31 | 7.99 | 7.99 |
| 14 Jan 2025, 13:29 | 7.91 | 7.91 |
| 9 Dec 2024, 09:51 | 8.08 | 8.08 |
| 11 Nov 2024, 15:06 | 8.53 | 8.53 |
| 28 Oct 2024, 16:18 | 8.05 | 8.05 |
| 2 Sep 2024, 13:09 | 8.7 | 8.7 |
| 6 Aug 2024, 14:21 | 8.2 | 8.2 |
| 2 Jul 2024, 10:23 | 8.29 | 8.29 |
| 7 Jun 2024, 10:35 | 8.15 | 8.15 |
| 1 May 2024, 09:47 | 8.03 | 8.03 |
| 11 Apr 2024, 09:54 | 8.01 | 8.01 |
| 19 Mar 2024, 10:51 | 8.17 | 8.17 |
| 5 Feb 2024, 10:40 | 8.36 | 8.36 |
| 4 Jan 2024, 08:26 | 8.09 | 8.09 |
| 6 Dec 2023, 09:08 | 7.96 | 7.96 |
| 6 Nov 2023, 11:54 | 7.61 | 7.61 |
| 5 Oct 2023, 08:46 | 8.09 | 8.09 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.015 mg/l
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 13:25 | 0.015 | 0.015 mg/l |
| 16 Jul 2026, 16:18 | 0.025 | 0.025 mg/l |
| 18 Jun 2026, 15:21 | 0.034 | 0.034 mg/l |
| 12 May 2026, 11:12 | 0.085 | 0.085 mg/l |
| 21 Apr 2026, 11:55 | 0.02 | 0.02 mg/l |
| 12 Mar 2026, 15:10 | 0.004 | 0.004 mg/l |
| 18 Feb 2026, 16:44 | <0.002 | below 0.002 mg/l (not detected above this) |
| 9 Dec 2025, 11:30 | 0.26 | 0.26 mg/l |
| 10 Nov 2025, 10:55 | 0.028 | 0.028 mg/l |
| 7 Oct 2025, 14:21 | 0.009 | 0.009 mg/l |
| 8 Sep 2025, 10:28 | 0.012 | 0.012 mg/l |
| 4 Aug 2025, 14:20 | 0.023 | 0.023 mg/l |
| 10 Jul 2025, 10:19 | 0.037 | 0.037 mg/l |
| 12 Jun 2025, 13:44 | 0.024 | 0.024 mg/l |
| 8 May 2025, 14:59 | 0.028 | 0.028 mg/l |
| 1 Apr 2025, 10:42 | 0.028 | 0.028 mg/l |
| 4 Mar 2025, 16:33 | 0.032 | 0.032 mg/l |
| 4 Feb 2025, 12:31 | 0.013 | 0.013 mg/l |
| 14 Jan 2025, 13:29 | 0.013 | 0.013 mg/l |
| 9 Dec 2024, 09:51 | 0.015 | 0.015 mg/l |
| 11 Nov 2024, 15:06 | 0.023 | 0.023 mg/l |
| 28 Oct 2024, 16:18 | 0.016 | 0.016 mg/l |
| 2 Sep 2024, 13:09 | 0.014 | 0.014 mg/l |
| 6 Aug 2024, 14:21 | 0.021 | 0.021 mg/l |
| 2 Jul 2024, 10:23 | 0.028 | 0.028 mg/l |
| 7 Jun 2024, 10:35 | 0.066 | 0.066 mg/l |
| 1 May 2024, 09:47 | 0.023 | 0.023 mg/l |
| 11 Apr 2024, 09:54 | 0.0041 | 0.0041 mg/l |
| 19 Mar 2024, 10:51 | 0.004 | 0.004 mg/l |
| 5 Feb 2024, 10:40 | 0.0059 | 0.0059 mg/l |
| 4 Jan 2024, 08:26 | 0.021 | 0.021 mg/l |
| 6 Dec 2023, 09:08 | 0.028 | 0.028 mg/l |
| 6 Nov 2023, 11:54 | 0.056 | 0.056 mg/l |
| 5 Oct 2023, 08:46 | 0.035 | 0.035 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.875 mg/l
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 13:25 | 0.875 | 0.875 mg/l |
| 16 Jul 2026, 16:18 | 1.49 | 1.49 mg/l |
| 18 Jun 2026, 15:21 | 2.28 | 2.28 mg/l |
| 12 May 2026, 11:12 | 3.25 | 3.25 mg/l |
| 21 Apr 2026, 11:55 | 4.07 | 4.07 mg/l |
| 12 Mar 2026, 15:10 | 5.19 | 5.19 mg/l |
| 18 Feb 2026, 16:44 | 5.39 | 5.39 mg/l |
| 9 Dec 2025, 11:30 | 3.86 | 3.86 mg/l |
| 10 Nov 2025, 10:55 | 3.49 | 3.49 mg/l |
| 7 Oct 2025, 14:21 | 1.89 | 1.89 mg/l |
| 8 Sep 2025, 10:28 | 1.79 | 1.79 mg/l |
| 4 Aug 2025, 14:20 | 0.991 | 0.991 mg/l |
| 10 Jul 2025, 10:19 | 1.39 | 1.39 mg/l |
| 12 Jun 2025, 13:44 | 2.19 | 2.19 mg/l |
| 8 May 2025, 14:59 | 2.89 | 2.89 mg/l |
| 1 Apr 2025, 10:42 | 3.69 | 3.69 mg/l |
| 4 Mar 2025, 16:33 | 3.79 | 3.79 mg/l |
| 4 Feb 2025, 12:31 | 3.59 | 3.59 mg/l |
| 14 Jan 2025, 13:29 | 3.2 | 3.2 mg/l |
| 9 Dec 2024, 09:51 | 3.09 | 3.09 mg/l |
| 11 Nov 2024, 15:06 | 2.69 | 2.69 mg/l |
| 28 Oct 2024, 16:18 | 2.39 | 2.39 mg/l |
| 2 Sep 2024, 13:09 | 2.49 | 2.49 mg/l |
| 6 Aug 2024, 14:21 | 2.59 | 2.59 mg/l |
| 2 Jul 2024, 10:23 | 3.67 | 3.67 mg/l |
| 7 Jun 2024, 10:35 | 4.16 | 4.16 mg/l |
| 1 May 2024, 09:47 | 4.77 | 4.77 mg/l |
| 11 Apr 2024, 09:54 | 4.98 | 4.98 mg/l |
| 19 Mar 2024, 10:51 | 4.89 | 4.89 mg/l |
| 5 Feb 2024, 10:40 | 5.79 | 5.79 mg/l |
| 4 Jan 2024, 08:26 | 5.89 | 5.89 mg/l |
| 6 Dec 2023, 09:08 | 4.89 | 4.89 mg/l |
| 6 Nov 2023, 11:54 | 3.68 | 3.68 mg/l |
| 5 Oct 2023, 08:46 | 2.98 | 2.98 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.012 mg/l
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 13:25 | 0.012 | 0.012 mg/l |
| 16 Jul 2026, 16:18 | 0.035 | 0.035 mg/l |
| 18 Jun 2026, 15:21 | 0.016 | 0.016 mg/l |
| 12 May 2026, 11:12 | 0.011 | 0.011 mg/l |
| 21 Apr 2026, 11:55 | 0.01 | 0.01 mg/l |
| 12 Mar 2026, 15:10 | 0.029 | 0.029 mg/l |
| 18 Feb 2026, 16:44 | 0.061 | 0.061 mg/l |
| 9 Dec 2025, 11:30 | 0.13 | 0.13 mg/l |
| 10 Nov 2025, 10:55 | 0.044 | 0.044 mg/l |
| 7 Oct 2025, 14:21 | 0.013 | 0.013 mg/l |
| 8 Sep 2025, 10:28 | 0.041 | 0.041 mg/l |
| 4 Aug 2025, 14:20 | 0.038 | 0.038 mg/l |
| 10 Jul 2025, 10:19 | 0.045 | 0.045 mg/l |
| 12 Jun 2025, 13:44 | 0.043 | 0.043 mg/l |
| 8 May 2025, 14:59 | 0.028 | 0.028 mg/l |
| 1 Apr 2025, 10:42 | 0.018 | 0.018 mg/l |
| 4 Mar 2025, 16:33 | 0.015 | 0.015 mg/l |
| 4 Feb 2025, 12:31 | 0.013 | 0.013 mg/l |
| 14 Jan 2025, 13:29 | 0.027 | 0.027 mg/l |
| 9 Dec 2024, 09:51 | 0.032 | 0.032 mg/l |
| 11 Nov 2024, 15:06 | 0.043 | 0.043 mg/l |
| 28 Oct 2024, 16:18 | 0.033 | 0.033 mg/l |
| 2 Sep 2024, 13:09 | 0.031 | 0.031 mg/l |
| 6 Aug 2024, 14:21 | 0.028 | 0.028 mg/l |
| 2 Jul 2024, 10:23 | 0.024 | 0.024 mg/l |
| 7 Jun 2024, 10:35 | 0.012 | 0.012 mg/l |
| 1 May 2024, 09:47 | 0.0028 | 0.0028 mg/l |
| 11 Apr 2024, 09:54 | 0.0012 | 0.0012 mg/l |
| 19 Mar 2024, 10:51 | 0.001 | 0.001 mg/l |
| 5 Feb 2024, 10:40 | 0.026 | 0.026 mg/l |
| 4 Jan 2024, 08:26 | 0.068 | 0.068 mg/l |
| 6 Dec 2023, 09:08 | 0.029 | 0.029 mg/l |
| 6 Nov 2023, 11:54 | 0.03 | 0.03 mg/l |
| 5 Oct 2023, 08:46 | 0.04 | 0.04 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
648 µS/cm
Sampled 10 Aug 2026, 52 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Aug 2026, 13:25 | 648 | 648 µS/cm |
| 16 Jul 2026, 16:18 | 622 | 622 µS/cm |
| 18 Jun 2026, 15:21 | 545 | 545 µS/cm |
| 12 May 2026, 11:12 | 498 | 498 µS/cm |
| 21 Apr 2026, 11:55 | 515 | 515 µS/cm |
| 12 Mar 2026, 15:10 | 554 | 554 µS/cm |
| 18 Feb 2026, 16:44 | 550 | 550 µS/cm |
| 9 Dec 2025, 11:30 | 661 | 661 µS/cm |
| 10 Nov 2025, 10:55 | 737 | 737 µS/cm |
| 7 Oct 2025, 14:21 | 683 | 683 µS/cm |
| 8 Sep 2025, 10:28 | 708 | 708 µS/cm |
| 4 Aug 2025, 14:20 | 628 | 628 µS/cm |
| 10 Jul 2025, 10:19 | 642 | 642 µS/cm |
| 12 Jun 2025, 13:44 | 598 | 598 µS/cm |
| 8 May 2025, 14:59 | 569 | 569 µS/cm |
| 1 Apr 2025, 10:42 | 569 | 569 µS/cm |
| 4 Mar 2025, 16:33 | 573 | 573 µS/cm |
| 4 Feb 2025, 12:31 | 597 | 597 µS/cm |
| 14 Jan 2025, 13:29 | 569 | 569 µS/cm |
| 9 Dec 2024, 09:51 | 569 | 569 µS/cm |
| 11 Nov 2024, 15:06 | 705 | 705 µS/cm |
| 28 Oct 2024, 16:18 | 552 | 552 µS/cm |
| 2 Sep 2024, 13:09 | 821 | 821 µS/cm |
| 6 Aug 2024, 14:21 | 516 | 516 µS/cm |
| 2 Jul 2024, 10:23 | 810 | 810 µS/cm |
| 7 Jun 2024, 10:35 | 545 | 545 µS/cm |
| 1 May 2024, 09:47 | 521 | 521 µS/cm |
| 11 Apr 2024, 09:54 | 508 | 508 µS/cm |
| 19 Mar 2024, 10:51 | 541 | 541 µS/cm |
| 5 Feb 2024, 10:40 | 567 | 567 µS/cm |
| 4 Jan 2024, 08:26 | 555 | 555 µS/cm |
| 6 Dec 2023, 09:08 | 641 | 641 µS/cm |
| 6 Nov 2023, 11:54 | 500 | 500 µS/cm |
| 5 Oct 2023, 08:46 | 662 | 662 µS/cm |
Everything measured here
66 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 66 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 34 | Oct 2023 – Aug 2026 | 99.1% 10 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 34 | Oct 2023 – Aug 2026 | 9.15 mg/l 10 Aug 2026 |
| Temperature of Water 0076 | River water | 34 | Oct 2023 – Aug 2026 | 19.1 °C 10 Aug 2026 |
| pH 0061 | River water | 34 | Oct 2023 – Aug 2026 | 8.44 10 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 34 | Oct 2023 – Aug 2026 | 0.015 mg/l 10 Aug 2026 |
| Nitrate as N 0117 | River water | 34 | Oct 2023 – Aug 2026 | 0.875 mg/l 10 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 34 | Oct 2023 – Aug 2026 | 0.012 mg/l 10 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 34 | Oct 2023 – Aug 2026 | 648 µS/cm 10 Aug 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 2 | Jan 2024 – Sep 2024 | below 0.001 µg/l 2 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 2 | Jan 2024 – Sep 2024 | below 0.001 µg/l 2 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | Jan 2024 – Sep 2024 | below 0.001 µg/l 2 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 2 | Jan 2024 – Sep 2024 | below 0.002 µg/l 2 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 2 | Jan 2024 – Sep 2024 | below 0.0005 µg/l 2 Sep 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | Jan 2024 – Sep 2024 | below 0.001 µg/l 2 Sep 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 2 | Jan 2024 – Sep 2024 | below 0.0005 µg/l 2 Sep 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 2 | Jan 2024 – Sep 2024 | below 0.004 µg/l 2 Sep 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | Jan 2024 – Sep 2024 | below 0.005 µg/l 2 Sep 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 2 | Jan 2024 – Sep 2024 | below 0.0005 µg/l 2 Sep 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 2 | Jan 2024 – Sep 2024 | below 0.001 µg/l 2 Sep 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 2 | Jan 2024 – Sep 2024 | below 0.001 µg/l 2 Sep 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 2 | Jan 2024 – Sep 2024 | below 0.0005 µg/l 2 Sep 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 34 | Oct 2023 – Aug 2026 | 270 mg/l 10 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 34 | Oct 2023 – Aug 2026 | 0.00053 mg/l 10 Aug 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 33 | Oct 2023 – Aug 2026 | 1.6 mg/l 10 Aug 2026 |
| Chloride 0172 | River water | 34 | Oct 2023 – Aug 2026 | 36 mg/l 10 Aug 2026 |
| Flow Type 2896 | River water | 24 | Jul 2024 – Aug 2026 | Moderate Flow 10 Aug 2026 |
| GCMS Screen : Target Based multi-residue screening : Semi Quantitative 4994 | River water | 2 | Mar 2026 – Jun 2026 | 1 text result 18 Jun 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 2 | Jan 2024 – Sep 2024 | below 0.001 µg/l 2 Sep 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 2 | Jan 2024 – Sep 2024 | below 0.002 µg/l 2 Sep 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 2 | Jan 2024 – Sep 2024 | below 0.002 µg/l 2 Sep 2024 |
| Nitrite as N 0118 | River water | 34 | Oct 2023 – Aug 2026 | 0.0051 mg/l 10 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 34 | Oct 2023 – Aug 2026 | 0.88 mg/l 10 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 2 | Jan 2024 – Sep 2024 | below 0.0005 µg/l 2 Sep 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 2 | Jan 2024 – Sep 2024 | below 0.0005 µg/l 2 Sep 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 2 | Jan 2024 – Sep 2024 | below 0.0005 µg/l 2 Sep 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 2 | Jan 2024 – Sep 2024 | below 0.0005 µg/l 2 Sep 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 2 | Jan 2024 – Sep 2024 | below 0.0005 µg/l 2 Sep 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 2 | Jan 2024 – Sep 2024 | 0.0029 µg/l 2 Sep 2024 |
| Perfluorobutanoic acid 2995 | River water | 2 | Jan 2024 – Sep 2024 | 0.0034 µg/l 2 Sep 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 2 | Jan 2024 – Sep 2024 | 0.0017 µg/l 2 Sep 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 2 | Jan 2024 – Sep 2024 | below 0.002 µg/l 2 Sep 2024 |
| Perfluorodecanoic acid 8892 | River water | 2 | Jan 2024 – Sep 2024 | below 0.002 µg/l 2 Sep 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 2 | Jan 2024 – Sep 2024 | below 0.005 µg/l 2 Sep 2024 |
| Perfluorododecanoic acid 8894 | River water | 2 | Jan 2024 – Sep 2024 | below 0.002 µg/l 2 Sep 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 2 | Jan 2024 – Sep 2024 | 0.00064 µg/l 2 Sep 2024 |
| Perfluoroheptanoic acid 8889 | River water | 2 | Jan 2024 – Sep 2024 | 0.0029 µg/l 2 Sep 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 2 | Jan 2024 – Sep 2024 | 0.00066 µg/l 2 Sep 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 2 | Jan 2024 – Sep 2024 | 0.0039 µg/l 2 Sep 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | Jan 2024 – Sep 2024 | 0.019 µg/l 2 Sep 2024 |
| Perfluorohexanoic acid 8888 | River water | 2 | Jan 2024 – Sep 2024 | 0.0073 µg/l 2 Sep 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 2 | Jan 2024 – Sep 2024 | below 0.0005 µg/l 2 Sep 2024 |
| Perfluorononanoic acid 8891 | River water | 2 | Jan 2024 – Sep 2024 | below 0.001 µg/l 2 Sep 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 2 | Jan 2024 – Sep 2024 | below 0.002 µg/l 2 Sep 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 2 | Jan 2024 – Sep 2024 | below 0.001 µg/l 2 Sep 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 2 | Jan 2024 – Sep 2024 | 0.012 µg/l 2 Sep 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 2 | Jan 2024 – Sep 2024 | 0.021 µg/l 2 Sep 2024 |
| Perfluorooctanoic acid 8890 | River water | 2 | Jan 2024 – Sep 2024 | 0.0024 µg/l 2 Sep 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 2 | Jan 2024 – Sep 2024 | 0.0024 µg/l 2 Sep 2024 |
| Perfluoropentanoic acid 8887 | River water | 2 | Jan 2024 – Sep 2024 | 0.0076 µg/l 2 Sep 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | Jan 2024 – Sep 2024 | below 0.006 µg/l 2 Sep 2024 |
| Perfluorotridecanoic acid 2955 | River water | 2 | Jan 2024 – Sep 2024 | below 0.005 µg/l 2 Sep 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 2 | Jan 2024 – Sep 2024 | below 0.004 µg/l 2 Sep 2024 |
| Perfluoroundecanoic acid 8893 | River water | 2 | Jan 2024 – Sep 2024 | below 0.002 µg/l 2 Sep 2024 |
| Phosphorus, Total as P 0348 | River water | 34 | Oct 2023 – Aug 2026 | 0.027 mg/l 10 Aug 2026 |
| Silica, reactive as SiO2 0182 | River water | 34 | Oct 2023 – Aug 2026 | 7.2 mg/l 10 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 8 | Dec 2025 – Aug 2026 | 16 mg/l 10 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.