Bourne (North) at Thorpegreen Bridge
EA name: BOURNE ( NORTH ) AT THORPEGREEN BRIDGE
Environment Agency sampling point TH-PBNR0003 · 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
- 18 Aug 2026, 09:3144 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 33 since 18 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 501500, 168030As published, to the nearest 10 m. Open in a map
- River, by its own name
- Bourne
- River, by the map
- The BournePlaced on the river its name gives, 6 m from the line.
- Next gauge downstream
- Free Prae Road On the Chertsey Bourne · 4.0 km along the river
- Nearest gauge upstream
- Trumps Green On the Chertsey Bourne · 2.1 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (33 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
69%
Sampled 18 Aug 2026, 44 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:31 | 69 | 69% |
| 17 Jul 2026, 15:38 | 65.4 | 65.4% |
| 15 Jun 2026, 12:57 | 76.2 | 76.2% |
| 13 May 2026, 11:03 | 78.9 | 78.9% |
| 13 Apr 2026, 11:54 | 94.4 | 94.4% |
| 13 Mar 2026, 09:50 | 92 | 92% |
| 12 Feb 2026, 12:21 | 89 | 89% |
| 9 Jan 2026, 11:05 | 95.1 | 95.1% |
| 5 Dec 2025, 12:17 | 91 | 91% |
| 12 Nov 2025, 11:30 | 84.5 | 84.5% |
| 8 Oct 2025, 11:14 | 84.1 | 84.1% |
| 17 Sep 2025, 11:12 | 86 | 86% |
| 18 Aug 2025, 09:28 | 74 | 74% |
| 28 Jul 2025, 10:44 | 76 | 76% |
| 25 Jun 2025, 10:11 | 64.4 | 64.4% |
| 19 May 2025, 10:48 | 74.4 | 74.4% |
| 22 Apr 2025, 12:44 | 89.6 | 89.6% |
| 5 Mar 2025, 11:44 | 97.2 | 97.2% |
| 6 Feb 2025, 09:45 | 97.8 | 97.8% |
| 14 Jan 2025, 09:50 | 98.6 | 98.6% |
| 11 Dec 2024, 11:08 | 95 | 95% |
| 20 Nov 2024, 11:22 | 94.2 | 94.2% |
| 4 Oct 2024, 12:47 | 97.8 | 97.8% |
| 13 Sep 2024, 09:34 | 90.5 | 90.5% |
| 22 Aug 2024, 10:21 | 84.3 | 84.3% |
| 31 Jul 2024, 13:09 | 82.4 | 82.4% |
| 24 Jun 2024, 13:52 | 83.4 | 83.4% |
| 5 Mar 2024, 09:47 | 96 | 96% |
| 12 Feb 2024, 09:45 | 94.8 | 94.8% |
| 24 Jan 2024, 11:06 | 96.5 | 96.5% |
| 6 Dec 2023, 13:23 | 95.1 | 95.1% |
| 7 Nov 2023, 12:24 | 92.6 | 92.6% |
| 18 Oct 2023, 09:33 | 87 | 87% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.42 mg/l
Sampled 18 Aug 2026, 44 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:31 | 6.42 | 6.42 mg/l |
| 17 Jul 2026, 15:38 | 5.93 | 5.93 mg/l |
| 15 Jun 2026, 12:57 | 7.41 | 7.41 mg/l |
| 13 May 2026, 11:03 | 8.7 | 8.7 mg/l |
| 13 Apr 2026, 11:54 | 10.6 | 10.6 mg/l |
| 13 Mar 2026, 09:50 | 10.6 | 10.6 mg/l |
| 12 Feb 2026, 12:21 | 10.4 | 10.4 mg/l |
| 9 Jan 2026, 11:05 | 12.5 | 12.5 mg/l |
| 5 Dec 2025, 12:17 | 11.3 | 11.3 mg/l |
| 12 Nov 2025, 11:30 | 9 | 9 mg/l |
| 8 Oct 2025, 11:14 | 8.74 | 8.74 mg/l |
| 17 Sep 2025, 11:12 | 8.71 | 8.71 mg/l |
| 18 Aug 2025, 09:28 | 7.16 | 7.16 mg/l |
| 28 Jul 2025, 10:44 | 7.47 | 7.47 mg/l |
| 25 Jun 2025, 10:11 | 6.16 | 6.16 mg/l |
| 19 May 2025, 10:48 | 7.72 | 7.72 mg/l |
| 22 Apr 2025, 12:44 | 9.57 | 9.57 mg/l |
| 5 Mar 2025, 11:44 | 12.2 | 12.2 mg/l |
| 6 Feb 2025, 09:45 | 12.8 | 12.8 mg/l |
| 14 Jan 2025, 09:50 | 12.8 | 12.8 mg/l |
| 11 Dec 2024, 11:08 | 11.5 | 11.5 mg/l |
| 20 Nov 2024, 11:22 | 11.3 | 11.3 mg/l |
| 4 Oct 2024, 12:47 | 10.5 | 10.5 mg/l |
| 13 Sep 2024, 09:34 | 9.87 | 9.87 mg/l |
| 22 Aug 2024, 10:21 | 8.41 | 8.41 mg/l |
| 31 Jul 2024, 13:09 | 7.66 | 7.66 mg/l |
| 24 Jun 2024, 13:52 | 8.02 | 8.02 mg/l |
| 5 Mar 2024, 09:47 | 11.6 | 11.6 mg/l |
| 12 Feb 2024, 09:45 | 11.5 | 11.5 mg/l |
| 24 Jan 2024, 11:06 | 11.8 | 11.8 mg/l |
| 6 Dec 2023, 13:23 | 11.9 | 11.9 mg/l |
| 7 Nov 2023, 12:24 | 10.4 | 10.4 mg/l |
| 18 Oct 2023, 09:33 | 9.38 | 9.38 mg/l |
Water temperature
code 0076 · °C
18.7 °C
Sampled 18 Aug 2026, 44 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:31 | 18.7 | 18.7 °C |
| 17 Jul 2026, 15:38 | 20 | 20 °C |
| 15 Jun 2026, 12:57 | 16.6 | 16.6 °C |
| 13 May 2026, 11:03 | 10.9 | 10.9 °C |
| 13 Apr 2026, 11:54 | 10.1 | 10.1 °C |
| 13 Mar 2026, 09:50 | 9.2 | 9.2 °C |
| 12 Feb 2026, 12:21 | 8.4 | 8.4 °C |
| 9 Jan 2026, 11:05 | 3.7 | 3.7 °C |
| 5 Dec 2025, 12:17 | 6 | 6 °C |
| 12 Nov 2025, 11:30 | 12.4 | 12.4 °C |
| 8 Oct 2025, 11:14 | 13.5 | 13.5 °C |
| 17 Sep 2025, 11:12 | 14.7 | 14.7 °C |
| 18 Aug 2025, 09:28 | 16.8 | 16.8 °C |
| 28 Jul 2025, 10:44 | 16.1 | 16.1 °C |
| 25 Jun 2025, 10:11 | 17.4 | 17.4 °C |
| 19 May 2025, 10:48 | 13.6 | 13.6 °C |
| 22 Apr 2025, 12:44 | 12.3 | 12.3 °C |
| 5 Mar 2025, 11:44 | 5.6 | 5.6 °C |
| 6 Feb 2025, 09:45 | 4 | 4 °C |
| 14 Jan 2025, 09:50 | 4.2 | 4.2 °C |
| 11 Dec 2024, 11:08 | 7 | 7 °C |
| 20 Nov 2024, 11:22 | 7.3 | 7.3 °C |
| 4 Oct 2024, 12:47 | 12.1 | 12.1 °C |
| 13 Sep 2024, 09:34 | 11.4 | 11.4 °C |
| 22 Aug 2024, 10:21 | 15.4 | 15.4 °C |
| 31 Jul 2024, 13:09 | 18.8 | 18.8 °C |
| 24 Jun 2024, 13:52 | 17.1 | 17.1 °C |
| 5 Mar 2024, 09:47 | 7.2 | 7.2 °C |
| 12 Feb 2024, 09:45 | 7 | 7 °C |
| 24 Jan 2024, 11:06 | 6.8 | 6.8 °C |
| 6 Dec 2023, 13:23 | 5.9 | 5.9 °C |
| 7 Nov 2023, 12:24 | 10.1 | 10.1 °C |
| 18 Oct 2023, 09:33 | 11.9 | 11.9 °C |
pH
code 0061
7.17
Sampled 18 Aug 2026, 44 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:31 | 7.17 | 7.17 |
| 17 Jul 2026, 15:38 | 7.22 | 7.22 |
| 15 Jun 2026, 12:57 | 7.01 | 7.01 |
| 13 May 2026, 11:03 | 6.93 | 6.93 |
| 13 Apr 2026, 11:54 | 7.31 | 7.31 |
| 13 Mar 2026, 09:50 | 7.39 | 7.39 |
| 12 Feb 2026, 12:21 | 7.39 | 7.39 |
| 9 Jan 2026, 11:05 | 7.14 | 7.14 |
| 5 Dec 2025, 12:17 | 7.49 | 7.49 |
| 12 Nov 2025, 11:30 | 7.12 | 7.12 |
| 8 Oct 2025, 11:14 | 7.28 | 7.28 |
| 17 Sep 2025, 11:12 | 7.27 | 7.27 |
| 18 Aug 2025, 09:28 | 7.14 | 7.14 |
| 28 Jul 2025, 10:44 | 7.09 | 7.09 |
| 25 Jun 2025, 10:11 | 7.07 | 7.07 |
| 19 May 2025, 10:48 | 7.01 | 7.01 |
| 22 Apr 2025, 12:44 | 7.24 | 7.24 |
| 5 Mar 2025, 11:44 | 7.46 | 7.46 |
| 6 Feb 2025, 09:45 | 7.34 | 7.34 |
| 14 Jan 2025, 09:50 | 7.44 | 7.44 |
| 11 Dec 2024, 11:08 | 7.39 | 7.39 |
| 20 Nov 2024, 11:22 | 7.45 | 7.45 |
| 4 Oct 2024, 12:47 | 7.43 | 7.43 |
| 13 Sep 2024, 09:34 | 7.32 | 7.32 |
| 22 Aug 2024, 10:21 | 6.89 | 6.89 |
| 31 Jul 2024, 13:09 | 7.24 | 7.24 |
| 24 Jun 2024, 13:52 | 7.25 | 7.25 |
| 5 Mar 2024, 09:47 | 7.5 | 7.5 |
| 12 Feb 2024, 09:45 | 7.62 | 7.62 |
| 24 Jan 2024, 11:06 | 7.54 | 7.54 |
| 6 Dec 2023, 13:23 | 7.37 | 7.37 |
| 7 Nov 2023, 12:24 | 7.25 | 7.25 |
| 18 Oct 2023, 09:33 | 7.26 | 7.26 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.23 mg/l
Sampled 18 Aug 2026, 44 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:31 | 0.23 | 0.23 mg/l |
| 17 Jul 2026, 15:38 | 0.26 | 0.26 mg/l |
| 15 Jun 2026, 12:57 | 0.32 | 0.32 mg/l |
| 13 May 2026, 11:03 | 0.54 | 0.54 mg/l |
| 13 Apr 2026, 11:54 | 0.22 | 0.22 mg/l |
| 13 Mar 2026, 09:50 | 0.15 | 0.15 mg/l |
| 12 Feb 2026, 12:21 | 0.13 | 0.13 mg/l |
| 9 Jan 2026, 11:05 | 0.095 | 0.095 mg/l |
| 5 Dec 2025, 12:17 | 0.24 | 0.24 mg/l |
| 12 Nov 2025, 11:30 | 0.19 | 0.19 mg/l |
| 8 Oct 2025, 11:14 | 0.21 | 0.21 mg/l |
| 17 Sep 2025, 11:12 | 0.21 | 0.21 mg/l |
| 18 Aug 2025, 09:28 | 0.23 | 0.23 mg/l |
| 28 Jul 2025, 10:44 | 0.33 | 0.33 mg/l |
| 25 Jun 2025, 10:11 | 0.51 | 0.51 mg/l |
| 19 May 2025, 10:48 | 0.52 | 0.52 mg/l |
| 22 Apr 2025, 12:44 | 0.16 | 0.16 mg/l |
| 5 Mar 2025, 11:44 | 0.12 | 0.12 mg/l |
| 6 Feb 2025, 09:45 | 0.12 | 0.12 mg/l |
| 14 Jan 2025, 09:50 | 0.13 | 0.13 mg/l |
| 11 Dec 2024, 11:08 | 0.096 | 0.096 mg/l |
| 20 Nov 2024, 11:22 | 0.11 | 0.11 mg/l |
| 4 Oct 2024, 12:47 | 0.095 | 0.095 mg/l |
| 13 Sep 2024, 09:34 | 0.089 | 0.089 mg/l |
| 22 Aug 2024, 10:21 | 0.14 | 0.14 mg/l |
| 31 Jul 2024, 13:09 | 0.12 | 0.12 mg/l |
| 24 Jun 2024, 13:52 | 0.12 | 0.12 mg/l |
| 5 Mar 2024, 09:47 | 0.091 | 0.091 mg/l |
| 12 Feb 2024, 09:45 | 0.11 | 0.11 mg/l |
| 24 Jan 2024, 11:06 | 0.12 | 0.12 mg/l |
| 6 Dec 2023, 13:23 | 0.09 | 0.09 mg/l |
| 7 Nov 2023, 12:24 | 0.1 | 0.1 mg/l |
| 18 Oct 2023, 09:33 | 0.14 | 0.14 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.01 mg/l
Sampled 18 Aug 2026, 44 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:31 | 1.01 | 1.01 mg/l |
| 17 Jul 2026, 15:38 | 1 | 1 mg/l |
| 15 Jun 2026, 12:57 | 0.645 | 0.645 mg/l |
| 13 May 2026, 11:03 | 0.635 | 0.635 mg/l |
| 13 Apr 2026, 11:54 | 0.585 | 0.585 mg/l |
| 13 Mar 2026, 09:50 | 0.886 | 0.886 mg/l |
| 12 Feb 2026, 12:21 | 1.19 | 1.19 mg/l |
| 9 Jan 2026, 11:05 | 0.796 | 0.796 mg/l |
| 5 Dec 2025, 12:17 | 0.5 | 0.5 mg/l |
| 12 Nov 2025, 11:30 | 0.398 | 0.398 mg/l |
| 8 Oct 2025, 11:14 | 0.435 | 0.435 mg/l |
| 17 Sep 2025, 11:12 | 0.411 | 0.411 mg/l |
| 18 Aug 2025, 09:28 | 0.931 | 0.931 mg/l |
| 28 Jul 2025, 10:44 | 0.847 | 0.847 mg/l |
| 25 Jun 2025, 10:11 | 0.8 | 0.8 mg/l |
| 19 May 2025, 10:48 | 0.592 | 0.592 mg/l |
| 22 Apr 2025, 12:44 | 0.511 | 0.511 mg/l |
| 5 Mar 2025, 11:44 | 0.946 | 0.946 mg/l |
| 6 Feb 2025, 09:45 | 0.965 | 0.965 mg/l |
| 14 Jan 2025, 09:50 | 0.834 | 0.834 mg/l |
| 11 Dec 2024, 11:08 | 0.688 | 0.688 mg/l |
| 20 Nov 2024, 11:22 | 0.392 | 0.392 mg/l |
| 4 Oct 2024, 12:47 | 0.417 | 0.417 mg/l |
| 13 Sep 2024, 09:34 | 0.266 | 0.266 mg/l |
| 22 Aug 2024, 10:21 | 0.391 | 0.391 mg/l |
| 31 Jul 2024, 13:09 | 0.47 | 0.47 mg/l |
| 24 Jun 2024, 13:52 | 0.375 | 0.375 mg/l |
| 5 Mar 2024, 09:47 | 0.849 | 0.849 mg/l |
| 12 Feb 2024, 09:45 | 0.961 | 0.961 mg/l |
| 24 Jan 2024, 11:06 | 1.09 | 1.09 mg/l |
| 6 Dec 2023, 13:23 | 0.652 | 0.652 mg/l |
| 7 Nov 2023, 12:24 | 0.452 | 0.452 mg/l |
| 18 Oct 2023, 09:33 | 0.266 | 0.266 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.094 mg/l
Sampled 18 Aug 2026, 44 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:31 | 0.094 | 0.094 mg/l |
| 17 Jul 2026, 15:38 | 0.092 | 0.092 mg/l |
| 15 Jun 2026, 12:57 | 0.083 | 0.083 mg/l |
| 13 May 2026, 11:03 | 0.072 | 0.072 mg/l |
| 13 Apr 2026, 11:54 | 0.049 | 0.049 mg/l |
| 13 Mar 2026, 09:50 | 0.041 | 0.041 mg/l |
| 12 Feb 2026, 12:21 | 0.05 | 0.05 mg/l |
| 9 Jan 2026, 11:05 | 0.027 | 0.027 mg/l |
| 5 Dec 2025, 12:17 | 0.043 | 0.043 mg/l |
| 12 Nov 2025, 11:30 | 0.036 | 0.036 mg/l |
| 8 Oct 2025, 11:14 | 0.047 | 0.047 mg/l |
| 17 Sep 2025, 11:12 | 0.062 | 0.062 mg/l |
| 18 Aug 2025, 09:28 | 0.095 | 0.095 mg/l |
| 28 Jul 2025, 10:44 | 0.085 | 0.085 mg/l |
| 25 Jun 2025, 10:11 | 0.071 | 0.071 mg/l |
| 19 May 2025, 10:48 | 0.093 | 0.093 mg/l |
| 22 Apr 2025, 12:44 | 0.04 | 0.04 mg/l |
| 5 Mar 2025, 11:44 | 0.051 | 0.051 mg/l |
| 6 Feb 2025, 09:45 | 0.055 | 0.055 mg/l |
| 14 Jan 2025, 09:50 | 0.052 | 0.052 mg/l |
| 11 Dec 2024, 11:08 | 0.05 | 0.05 mg/l |
| 20 Nov 2024, 11:22 | 0.039 | 0.039 mg/l |
| 4 Oct 2024, 12:47 | 0.038 | 0.038 mg/l |
| 13 Sep 2024, 09:34 | 0.062 | 0.062 mg/l |
| 22 Aug 2024, 10:21 | 0.018 | 0.018 mg/l |
| 31 Jul 2024, 13:09 | 0.069 | 0.069 mg/l |
| 24 Jun 2024, 13:52 | 0.059 | 0.059 mg/l |
| 5 Mar 2024, 09:47 | 0.055 | 0.055 mg/l |
| 12 Feb 2024, 09:45 | 0.043 | 0.043 mg/l |
| 24 Jan 2024, 11:06 | 0.053 | 0.053 mg/l |
| 6 Dec 2023, 13:23 | 0.039 | 0.039 mg/l |
| 7 Nov 2023, 12:24 | 0.034 | 0.034 mg/l |
| 18 Oct 2023, 09:33 | 0.029 | 0.029 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
452 µS/cm
Sampled 18 Aug 2026, 44 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Aug 2026, 09:31 | 452 | 452 µS/cm |
| 17 Jul 2026, 15:38 | 460 | 460 µS/cm |
| 15 Jun 2026, 12:57 | 431 | 431 µS/cm |
| 13 May 2026, 11:03 | 446 | 446 µS/cm |
| 13 Apr 2026, 11:54 | 403 | 403 µS/cm |
| 13 Mar 2026, 09:50 | 371 | 371 µS/cm |
| 12 Feb 2026, 12:21 | 364 | 364 µS/cm |
| 9 Jan 2026, 11:05 | 459 | 459 µS/cm |
| 5 Dec 2025, 12:17 | 460 | 460 µS/cm |
| 12 Nov 2025, 11:30 | 431 | 431 µS/cm |
| 8 Oct 2025, 11:14 | 432 | 432 µS/cm |
| 17 Sep 2025, 11:12 | 425 | 425 µS/cm |
| 18 Aug 2025, 09:28 | 422 | 422 µS/cm |
| 28 Jul 2025, 10:44 | 428 | 428 µS/cm |
| 25 Jun 2025, 10:11 | 454 | 454 µS/cm |
| 19 May 2025, 10:48 | 437 | 437 µS/cm |
| 22 Apr 2025, 12:44 | 400 | 400 µS/cm |
| 5 Mar 2025, 11:44 | 376 | 376 µS/cm |
| 6 Feb 2025, 09:45 | 367 | 367 µS/cm |
| 14 Jan 2025, 09:50 | 385 | 385 µS/cm |
| 11 Dec 2024, 11:08 | 371 | 371 µS/cm |
| 20 Nov 2024, 11:22 | 357 | 357 µS/cm |
| 4 Oct 2024, 12:47 | 363 | 363 µS/cm |
| 13 Sep 2024, 09:34 | 386 | 386 µS/cm |
| 22 Aug 2024, 10:21 | 393 | 393 µS/cm |
| 31 Jul 2024, 13:09 | 418 | 418 µS/cm |
| 24 Jun 2024, 13:52 | 412 | 412 µS/cm |
| 5 Mar 2024, 09:47 | 352 | 352 µS/cm |
| 12 Feb 2024, 09:45 | 372 | 372 µS/cm |
| 24 Jan 2024, 11:06 | 398 | 398 µS/cm |
| 6 Dec 2023, 13:23 | 382 | 382 µS/cm |
| 7 Nov 2023, 12:24 | 382 | 382 µS/cm |
| 18 Oct 2023, 09:33 | 401 | 401 µS/cm |
Everything measured here
14 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 14 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 33 | Oct 2023 – Aug 2026 | 69% 18 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 33 | Oct 2023 – Aug 2026 | 6.42 mg/l 18 Aug 2026 |
| Temperature of Water 0076 | River water | 33 | Oct 2023 – Aug 2026 | 18.7 °C 18 Aug 2026 |
| pH 0061 | River water | 33 | Oct 2023 – Aug 2026 | 7.17 18 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 33 | Oct 2023 – Aug 2026 | 0.23 mg/l 18 Aug 2026 |
| Nitrate as N 0117 | River water | 33 | Oct 2023 – Aug 2026 | 1.01 mg/l 18 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 33 | Oct 2023 – Aug 2026 | 0.094 mg/l 18 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 33 | Oct 2023 – Aug 2026 | 452 µS/cm 18 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 33 | Oct 2023 – Aug 2026 | 56 mg/l 18 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 33 | Oct 2023 – Aug 2026 | 0.0012 mg/l 18 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 27 | Oct 2023 – Mar 2026 | below 4 mg/l 13 Mar 2026 |
| Nitrite as N 0118 | River water | 33 | Oct 2023 – Aug 2026 | 0.09 mg/l 18 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 33 | Oct 2023 – Aug 2026 | 1.1 mg/l 18 Aug 2026 |
| Phosphorus, Total as P 0348 | River water | 9 | Apr 2025 – Mar 2026 | 0.19 mg/l 13 Mar 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.