Blackwater above Whitewater
EA name: BLACKWATER ABOVE WHITEWATER
Environment Agency sampling point TH-PLDR0007 · 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, 10:4730 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 32 since 6 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 474290, 163430As published, to the nearest 10 m. Open in a map
- River, by its own name
- Blackwater
- River, by the map
- Blackwater RiverPlaced on the river its name gives, 6 m from the line.
- Next gauge downstream
- Swallowfield On the River Blackwater · 2.1 km along the riverSwallowfield Side Channel On the River Blackwater · 2.1 km along the river
- Nearest gauge upstream
- Eversley On the River Blackwater · 4.1 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (32 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
83.5%
Sampled 1 Sep 2026, 30 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:47 | 83.5 | 83.5% |
| 14 Jul 2026, 15:34 | 85.7 | 85.7% |
| 26 Jun 2026, 09:59 | 75.9 | 75.9% |
| 14 May 2026, 09:17 | 82.8 | 82.8% |
| 13 Apr 2026, 10:07 | 87.3 | 87.3% |
| 23 Mar 2026, 11:53 | 96.8 | 96.8% |
| 7 Jan 2026, 09:35 | 67.5 | 67.5% |
| 4 Dec 2025, 11:06 | 84.2 | 84.2% |
| 11 Nov 2025, 11:53 | 78.5 | 78.5% |
| 27 Oct 2025, 10:11 | 88.6 | 88.6% |
| 26 Sep 2025, 09:03 | 89.7 | 89.7% |
| 20 Aug 2025, 09:05 | 83.5 | 83.5% |
| 2 Jul 2025, 11:14 | 80.2 | 80.2% |
| 16 Jun 2025, 08:53 | 85.6 | 85.6% |
| 29 May 2025, 10:47 | 87.6 | 87.6% |
| 28 Apr 2025, 09:15 | 89.6 | 89.6% |
| 12 Mar 2025, 12:21 | 98.5 | 98.5% |
| 12 Feb 2025, 09:44 | 90 | 90% |
| 23 Jan 2025, 08:38 | 89.5 | 89.5% |
| 6 Dec 2024, 08:58 | 83.2 | 83.2% |
| 18 Nov 2024, 10:23 | 87.8 | 87.8% |
| 25 Oct 2024, 08:53 | 85.3 | 85.3% |
| 6 Sep 2024, 08:56 | 78.8 | 78.8% |
| 23 Aug 2024, 08:51 | 84.9 | 84.9% |
| 24 Jul 2024, 12:06 | 93.5 | 93.5% |
| 26 Jun 2024, 08:57 | 80.3 | 80.3% |
| 12 Mar 2024, 09:54 | 92 | 92% |
| 28 Feb 2024, 11:38 | 85.1 | 85.1% |
| 22 Jan 2024, 10:22 | 82.7 | 82.7% |
| 5 Dec 2023, 08:49 | 82.3 | 82.3% |
| 13 Nov 2023, 12:03 | 79.4 | 79.4% |
| 6 Oct 2023, 10:02 | 86.8 | 86.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8 mg/l
Sampled 1 Sep 2026, 30 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:47 | 8 | 8 mg/l |
| 14 Jul 2026, 15:34 | 7.61 | 7.61 mg/l |
| 26 Jun 2026, 09:59 | 6.42 | 6.42 mg/l |
| 14 May 2026, 09:17 | 9.03 | 9.03 mg/l |
| 13 Apr 2026, 10:07 | 9.67 | 9.67 mg/l |
| 23 Mar 2026, 11:53 | 10.6 | 10.6 mg/l |
| 7 Jan 2026, 09:35 | 8.65 | 8.65 mg/l |
| 4 Dec 2025, 11:06 | 9.69 | 9.69 mg/l |
| 11 Nov 2025, 11:53 | 8.25 | 8.25 mg/l |
| 27 Oct 2025, 10:11 | 9.7 | 9.7 mg/l |
| 26 Sep 2025, 09:03 | 9.69 | 9.69 mg/l |
| 20 Aug 2025, 09:05 | 7.97 | 7.97 mg/l |
| 2 Jul 2025, 11:14 | 7.2 | 7.2 mg/l |
| 16 Jun 2025, 08:53 | 8.17 | 8.17 mg/l |
| 29 May 2025, 10:47 | 8.5 | 8.5 mg/l |
| 28 Apr 2025, 09:15 | 9.36 | 9.36 mg/l |
| 12 Mar 2025, 12:21 | 11.2 | 11.2 mg/l |
| 12 Feb 2025, 09:44 | 11 | 11 mg/l |
| 23 Jan 2025, 08:38 | 10.8 | 10.8 mg/l |
| 6 Dec 2024, 08:58 | 9.37 | 9.37 mg/l |
| 18 Nov 2024, 10:23 | 9.68 | 9.68 mg/l |
| 25 Oct 2024, 08:53 | 8.83 | 8.83 mg/l |
| 6 Sep 2024, 08:56 | 7.56 | 7.56 mg/l |
| 23 Aug 2024, 08:51 | 8.17 | 8.17 mg/l |
| 24 Jul 2024, 12:06 | 8.63 | 8.63 mg/l |
| 26 Jun 2024, 08:57 | 7.43 | 7.43 mg/l |
| 12 Mar 2024, 09:54 | 10.5 | 10.5 mg/l |
| 28 Feb 2024, 11:38 | 9.87 | 9.87 mg/l |
| 22 Jan 2024, 10:22 | 9.59 | 9.59 mg/l |
| 5 Dec 2023, 08:49 | 9.64 | 9.64 mg/l |
| 13 Nov 2023, 12:03 | 8.7 | 8.7 mg/l |
| 6 Oct 2023, 10:02 | 8.66 | 8.66 mg/l |
Water temperature
code 0076 · °C
17.3 °C
Sampled 1 Sep 2026, 30 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:47 | 17.3 | 17.3 °C |
| 14 Jul 2026, 15:34 | 21.1 | 21.1 °C |
| 26 Jun 2026, 09:59 | 23.6 | 23.6 °C |
| 14 May 2026, 09:17 | 11.4 | 11.4 °C |
| 13 Apr 2026, 10:07 | 10.7 | 10.7 °C |
| 23 Mar 2026, 11:53 | 11.3 | 11.3 °C |
| 7 Jan 2026, 09:35 | 4.8 | 4.8 °C |
| 4 Dec 2025, 11:06 | 9.1 | 9.1 °C |
| 11 Nov 2025, 11:53 | 13 | 13 °C |
| 27 Oct 2025, 10:11 | 11.2 | 11.2 °C |
| 26 Sep 2025, 09:03 | 11.8 | 11.8 °C |
| 20 Aug 2025, 09:05 | 17.5 | 17.5 °C |
| 2 Jul 2025, 11:14 | 20.5 | 20.5 °C |
| 16 Jun 2025, 08:53 | 17.5 | 17.5 °C |
| 29 May 2025, 10:47 | 16.7 | 16.7 °C |
| 28 Apr 2025, 09:15 | 13.3 | 13.3 °C |
| 12 Mar 2025, 12:21 | 9.5 | 9.5 °C |
| 12 Feb 2025, 09:44 | 6.5 | 6.5 °C |
| 23 Jan 2025, 08:38 | 7.1 | 7.1 °C |
| 6 Dec 2024, 08:58 | 10 | 10 °C |
| 18 Nov 2024, 10:23 | 10.9 | 10.9 °C |
| 25 Oct 2024, 08:53 | 13.7 | 13.7 °C |
| 6 Sep 2024, 08:56 | 17.2 | 17.2 °C |
| 23 Aug 2024, 08:51 | 17.1 | 17.1 °C |
| 24 Jul 2024, 12:06 | 19.1 | 19.1 °C |
| 26 Jun 2024, 08:57 | 19 | 19 °C |
| 12 Mar 2024, 09:54 | 9.5 | 9.5 °C |
| 28 Feb 2024, 11:38 | 8.8 | 8.8 °C |
| 22 Jan 2024, 10:22 | 8.8 | 8.8 °C |
| 5 Dec 2023, 08:49 | 8.4 | 8.4 °C |
| 13 Nov 2023, 12:03 | 11.2 | 11.2 °C |
| 6 Oct 2023, 10:02 | 15.4 | 15.4 °C |
pH
code 0061
7.73
Sampled 1 Sep 2026, 30 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:47 | 7.73 | 7.73 |
| 14 Jul 2026, 15:34 | 7.93 | 7.93 |
| 26 Jun 2026, 09:59 | 7.5 | 7.5 |
| 14 May 2026, 09:17 | 7.45 | 7.45 |
| 13 Apr 2026, 10:07 | 7.64 | 7.64 |
| 23 Mar 2026, 11:53 | 7.59 | 7.59 |
| 7 Jan 2026, 09:35 | 7.54 | 7.54 |
| 4 Dec 2025, 11:06 | 7.68 | 7.68 |
| 11 Nov 2025, 11:53 | 7.39 | 7.39 |
| 27 Oct 2025, 10:11 | 7.6 | 7.6 |
| 26 Sep 2025, 09:03 | 7.54 | 7.54 |
| 20 Aug 2025, 09:05 | 7.78 | 7.78 |
| 2 Jul 2025, 11:14 | 7.49 | 7.49 |
| 16 Jun 2025, 08:53 | 7.54 | 7.54 |
| 29 May 2025, 10:47 | 7.69 | 7.69 |
| 28 Apr 2025, 09:15 | 7.62 | 7.62 |
| 12 Mar 2025, 12:21 | 7.83 | 7.83 |
| 12 Feb 2025, 09:44 | 7.52 | 7.52 |
| 23 Jan 2025, 08:38 | 7.43 | 7.43 |
| 6 Dec 2024, 08:58 | 7.49 | 7.49 |
| 18 Nov 2024, 10:23 | 7.68 | 7.68 |
| 25 Oct 2024, 08:53 | 7.65 | 7.65 |
| 6 Sep 2024, 08:56 | 7.27 | 7.27 |
| 23 Aug 2024, 08:51 | 7.62 | 7.62 |
| 24 Jul 2024, 12:06 | 7.82 | 7.82 |
| 26 Jun 2024, 08:57 | 7.63 | 7.63 |
| 12 Mar 2024, 09:54 | 7.6 | 7.6 |
| 28 Feb 2024, 11:38 | 7.54 | 7.54 |
| 22 Jan 2024, 10:22 | 7.56 | 7.56 |
| 5 Dec 2023, 08:49 | 7.49 | 7.49 |
| 13 Nov 2023, 12:03 | 7.39 | 7.39 |
| 6 Oct 2023, 10:02 | 7.71 | 7.71 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 1 Sep 2026, 30 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Jul 2026, 15:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Jun 2026, 09:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 May 2026, 09:17 | 0.062 | 0.062 mg/l |
| 13 Apr 2026, 10:07 | 0.089 | 0.089 mg/l |
| 23 Mar 2026, 11:53 | 0.14 | 0.14 mg/l |
| 7 Jan 2026, 09:35 | 0.43 | 0.43 mg/l |
| 4 Dec 2025, 11:06 | 0.044 | 0.044 mg/l |
| 11 Nov 2025, 11:53 | 0.061 | 0.061 mg/l |
| 27 Oct 2025, 10:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Sep 2025, 09:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Aug 2025, 09:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jul 2025, 11:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jun 2025, 08:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 May 2025, 10:47 | 0.043 | 0.043 mg/l |
| 28 Apr 2025, 09:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Mar 2025, 12:21 | 0.12 | 0.12 mg/l |
| 12 Feb 2025, 09:44 | 0.15 | 0.15 mg/l |
| 23 Jan 2025, 08:38 | 0.12 | 0.12 mg/l |
| 6 Dec 2024, 08:58 | 0.1 | 0.1 mg/l |
| 18 Nov 2024, 10:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Oct 2024, 08:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Sep 2024, 08:56 | 0.32 | 0.32 mg/l |
| 23 Aug 2024, 08:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Jul 2024, 12:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Jun 2024, 08:57 | 0.6 | 0.6 mg/l |
| 12 Mar 2024, 09:54 | 0.19 | 0.19 mg/l |
| 28 Feb 2024, 11:38 | 0.3 | 0.3 mg/l |
| 22 Jan 2024, 10:22 | 0.56 | 0.56 mg/l |
| 5 Dec 2023, 08:49 | 0.14 | 0.14 mg/l |
| 13 Nov 2023, 12:03 | 0.16 | 0.16 mg/l |
| 6 Oct 2023, 10:02 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
18 mg/l
Sampled 1 Sep 2026, 30 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:47 | 18 | 18 mg/l |
| 14 Jul 2026, 15:34 | 17 | 17 mg/l |
| 26 Jun 2026, 09:59 | 16 | 16 mg/l |
| 14 May 2026, 09:17 | 16.9 | 16.9 mg/l |
| 13 Apr 2026, 10:07 | 11.9 | 11.9 mg/l |
| 23 Mar 2026, 11:53 | 11.9 | 11.9 mg/l |
| 7 Jan 2026, 09:35 | 10.8 | 10.8 mg/l |
| 4 Dec 2025, 11:06 | 9.55 | 9.55 mg/l |
| 11 Nov 2025, 11:53 | 9.27 | 9.27 mg/l |
| 27 Oct 2025, 10:11 | 12 | 12 mg/l |
| 26 Sep 2025, 09:03 | 15 | 15 mg/l |
| 20 Aug 2025, 09:05 | 17 | 17 mg/l |
| 2 Jul 2025, 11:14 | 15 | 15 mg/l |
| 16 Jun 2025, 08:53 | 14 | 14 mg/l |
| 29 May 2025, 10:47 | 13 | 13 mg/l |
| 28 Apr 2025, 09:15 | 14 | 14 mg/l |
| 12 Mar 2025, 12:21 | 10.9 | 10.9 mg/l |
| 12 Feb 2025, 09:44 | 8.34 | 8.34 mg/l |
| 23 Jan 2025, 08:38 | 12.9 | 12.9 mg/l |
| 6 Dec 2024, 08:58 | 6.55 | 6.55 mg/l |
| 18 Nov 2024, 10:23 | 14 | 14 mg/l |
| 25 Oct 2024, 08:53 | 8.78 | 8.78 mg/l |
| 6 Sep 2024, 08:56 | 9.95 | 9.95 mg/l |
| 23 Aug 2024, 08:51 | 12 | 12 mg/l |
| 24 Jul 2024, 12:06 | 12 | 12 mg/l |
| 26 Jun 2024, 08:57 | 11.8 | 11.8 mg/l |
| 12 Mar 2024, 09:54 | 6.33 | 6.33 mg/l |
| 28 Feb 2024, 11:38 | 4.74 | 4.74 mg/l |
| 22 Jan 2024, 10:22 | 7.04 | 7.04 mg/l |
| 5 Dec 2023, 08:49 | 4.08 | 4.08 mg/l |
| 13 Nov 2023, 12:03 | 4.32 | 4.32 mg/l |
| 6 Oct 2023, 10:02 | 13 | 13 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.11 mg/l
Sampled 1 Sep 2026, 30 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:47 | 0.11 | 0.11 mg/l |
| 14 Jul 2026, 15:34 | 0.14 | 0.14 mg/l |
| 26 Jun 2026, 09:59 | 0.14 | 0.14 mg/l |
| 14 May 2026, 09:17 | 0.083 | 0.083 mg/l |
| 13 Apr 2026, 10:07 | 0.08 | 0.08 mg/l |
| 23 Mar 2026, 11:53 | 0.11 | 0.11 mg/l |
| 7 Jan 2026, 09:35 | 0.08 | 0.08 mg/l |
| 4 Dec 2025, 11:06 | 0.068 | 0.068 mg/l |
| 11 Nov 2025, 11:53 | 0.095 | 0.095 mg/l |
| 27 Oct 2025, 10:11 | 0.093 | 0.093 mg/l |
| 26 Sep 2025, 09:03 | 0.092 | 0.092 mg/l |
| 20 Aug 2025, 09:05 | 0.1 | 0.1 mg/l |
| 2 Jul 2025, 11:14 | 0.15 | 0.15 mg/l |
| 16 Jun 2025, 08:53 | 0.12 | 0.12 mg/l |
| 29 May 2025, 10:47 | 0.11 | 0.11 mg/l |
| 28 Apr 2025, 09:15 | 0.077 | 0.077 mg/l |
| 12 Mar 2025, 12:21 | 0.097 | 0.097 mg/l |
| 12 Feb 2025, 09:44 | 0.059 | 0.059 mg/l |
| 23 Jan 2025, 08:38 | 0.065 | 0.065 mg/l |
| 6 Dec 2024, 08:58 | 0.075 | 0.075 mg/l |
| 18 Nov 2024, 10:23 | 0.073 | 0.073 mg/l |
| 25 Oct 2024, 08:53 | 0.075 | 0.075 mg/l |
| 6 Sep 2024, 08:56 | 0.13 | 0.13 mg/l |
| 23 Aug 2024, 08:51 | 0.14 | 0.14 mg/l |
| 24 Jul 2024, 12:06 | 0.11 | 0.11 mg/l |
| 26 Jun 2024, 08:57 | 0.12 | 0.12 mg/l |
| 12 Mar 2024, 09:54 | 0.027 | 0.027 mg/l |
| 28 Feb 2024, 11:38 | 0.072 | 0.072 mg/l |
| 22 Jan 2024, 10:22 | 0.084 | 0.084 mg/l |
| 5 Dec 2023, 08:49 | 0.12 | 0.12 mg/l |
| 13 Nov 2023, 12:03 | 0.079 | 0.079 mg/l |
| 6 Oct 2023, 10:02 | 0.083 | 0.083 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
889 µS/cm
Sampled 1 Sep 2026, 30 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 10:47 | 889 | 889 µS/cm |
| 14 Jul 2026, 15:34 | 952 | 952 µS/cm |
| 26 Jun 2026, 09:59 | 837 | 837 µS/cm |
| 14 May 2026, 09:17 | 794 | 794 µS/cm |
| 13 Apr 2026, 10:07 | 713 | 713 µS/cm |
| 23 Mar 2026, 11:53 | 705 | 705 µS/cm |
| 7 Jan 2026, 09:35 | 748 | 748 µS/cm |
| 4 Dec 2025, 11:06 | 599 | 599 µS/cm |
| 11 Nov 2025, 11:53 | 554 | 554 µS/cm |
| 27 Oct 2025, 10:11 | 740 | 740 µS/cm |
| 26 Sep 2025, 09:03 | 760 | 760 µS/cm |
| 20 Aug 2025, 09:05 | 891 | 891 µS/cm |
| 2 Jul 2025, 11:14 | 855 | 855 µS/cm |
| 16 Jun 2025, 08:53 | 790 | 790 µS/cm |
| 29 May 2025, 10:47 | 777 | 777 µS/cm |
| 28 Apr 2025, 09:15 | 757 | 757 µS/cm |
| 12 Mar 2025, 12:21 | 679 | 679 µS/cm |
| 12 Feb 2025, 09:44 | 603 | 603 µS/cm |
| 23 Jan 2025, 08:38 | 680 | 680 µS/cm |
| 6 Dec 2024, 08:58 | 551 | 551 µS/cm |
| 18 Nov 2024, 10:23 | 751 | 751 µS/cm |
| 25 Oct 2024, 08:53 | 621 | 621 µS/cm |
| 6 Sep 2024, 08:56 | 593 | 593 µS/cm |
| 23 Aug 2024, 08:51 | 735 | 735 µS/cm |
| 24 Jul 2024, 12:06 | 776 | 776 µS/cm |
| 26 Jun 2024, 08:57 | 792 | 792 µS/cm |
| 12 Mar 2024, 09:54 | 573 | 573 µS/cm |
| 28 Feb 2024, 11:38 | 510 | 510 µS/cm |
| 22 Jan 2024, 10:22 | 803 | 803 µS/cm |
| 5 Dec 2023, 08:49 | 530 | 530 µS/cm |
| 13 Nov 2023, 12:03 | 531 | 531 µS/cm |
| 6 Oct 2023, 10:02 | 800 | 800 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 | 32 | Oct 2023 – Sep 2026 | 83.5% 1 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 32 | Oct 2023 – Sep 2026 | 8 mg/l 1 Sep 2026 |
| Temperature of Water 0076 | River water | 32 | Oct 2023 – Sep 2026 | 17.3 °C 1 Sep 2026 |
| pH 0061 | River water | 32 | Oct 2023 – Sep 2026 | 7.73 1 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 32 | Oct 2023 – Sep 2026 | below 0.03 mg/l 1 Sep 2026 |
| Nitrate as N 0117 | River water | 32 | Oct 2023 – Sep 2026 | 18 mg/l 1 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 32 | Oct 2023 – Sep 2026 | 0.11 mg/l 1 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 32 | Oct 2023 – Sep 2026 | 889 µS/cm 1 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 32 | Oct 2023 – Sep 2026 | 86 mg/l 1 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 32 | Oct 2023 – Sep 2026 | below 0.00051 mg/l 1 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 27 | Oct 2023 – Mar 2026 | 1.6 mg/l 23 Mar 2026 |
| Nitrite as N 0118 | River water | 32 | Oct 2023 – Sep 2026 | 0.021 mg/l 1 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 32 | Oct 2023 – Sep 2026 | 18 mg/l 1 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.