Filchampstead Brook above Thames
EA name: FILCHAMPSTEAD BROOK ABOVE THAMES
Environment Agency sampling point TH-PTHR0026 · 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
- 3 Aug 2026, 10:2459 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 33 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 444567, 207126As published, to the nearest 1 m. Open in a map
- River, by its own name
- Filchampstead Brook
- River, by the map
- Filchampstead BrookPlaced on the river its name gives, 4 m from the line.
- Next gauge downstream
- Eynsham Lock On the River Thames · 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 · %
57.6%
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 10:24 | 57.6 | 57.6% |
| 6 Jul 2026, 10:07 | 81.6 | 81.6% |
| 16 Jun 2026, 09:53 | 80.1 | 80.1% |
| 29 May 2026, 13:16 | 102.6 | 102.6% |
| 10 Apr 2026, 08:53 | 81.9 | 81.9% |
| 4 Mar 2026, 10:53 | 86.5 | 86.5% |
| 5 Feb 2026, 10:03 | 88.1 | 88.1% |
| 8 Jan 2026, 10:23 | 85.4 | 85.4% |
| 3 Dec 2025, 09:35 | 84.7 | 84.7% |
| 18 Nov 2025, 11:38 | 73.8 | 73.8% |
| 31 Oct 2025, 09:40 | 69.5 | 69.5% |
| 8 Sep 2025, 13:27 | 110.9 | 110.9% |
| 5 Aug 2025, 08:52 | 67 | 67% |
| 14 Jul 2025, 11:37 | 64.5 | 64.5% |
| 23 Jun 2025, 10:16 | 58.5 | 58.5% |
| 29 May 2025, 09:33 | 49.8 | 49.8% |
| 9 Apr 2025, 09:03 | 72.8 | 72.8% |
| 7 Mar 2025, 09:31 | 82.4 | 82.4% |
| 18 Feb 2025, 12:39 | 92.3 | 92.3% |
| 7 Jan 2025, 13:10 | 87.6 | 87.6% |
| 3 Dec 2024, 09:20 | 72.4 | 72.4% |
| 7 Nov 2024, 15:24 | 55.5 | 55.5% |
| 2 Oct 2024, 12:26 | 67.6 | 67.6% |
| 6 Sep 2024, 09:12 | 81.6 | 81.6% |
| 2 Aug 2024, 15:22 | 48.1 | 48.1% |
| 2 Jul 2024, 09:00 | 78.2 | 78.2% |
| 3 Jun 2024, 13:11 | 71.8 | 71.8% |
| 1 Mar 2024, 08:51 | 83.2 | 83.2% |
| 5 Feb 2024, 10:51 | 77.2 | 77.2% |
| 17 Jan 2024, 15:11 | 74.8 | 74.8% |
| 1 Dec 2023, 09:15 | 66.3 | 66.3% |
| 6 Nov 2023, 11:14 | 58 | 58% |
| 2 Oct 2023, 08:52 | 40.1 | 40.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
5.35 mg/l
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 10:24 | 5.35 | 5.35 mg/l |
| 6 Jul 2026, 10:07 | 7.43 | 7.43 mg/l |
| 16 Jun 2026, 09:53 | 7.69 | 7.69 mg/l |
| 29 May 2026, 13:16 | 9.51 | 9.51 mg/l |
| 10 Apr 2026, 08:53 | 9.38 | 9.38 mg/l |
| 4 Mar 2026, 10:53 | 10.2 | 10.2 mg/l |
| 5 Feb 2026, 10:03 | 10.8 | 10.8 mg/l |
| 8 Jan 2026, 10:23 | 11 | 11 mg/l |
| 3 Dec 2025, 09:35 | 10.6 | 10.6 mg/l |
| 18 Nov 2025, 11:38 | 8.86 | 8.86 mg/l |
| 31 Oct 2025, 09:40 | 7.54 | 7.54 mg/l |
| 8 Sep 2025, 13:27 | 10.6 | 10.6 mg/l |
| 5 Aug 2025, 08:52 | 6.7 | 6.7 mg/l |
| 14 Jul 2025, 11:37 | 5.92 | 5.92 mg/l |
| 23 Jun 2025, 10:16 | 5.76 | 5.76 mg/l |
| 29 May 2025, 09:33 | 5.05 | 5.05 mg/l |
| 9 Apr 2025, 09:03 | 8.57 | 8.57 mg/l |
| 7 Mar 2025, 09:31 | 9.89 | 9.89 mg/l |
| 18 Feb 2025, 12:39 | 12.1 | 12.1 mg/l |
| 7 Jan 2025, 13:10 | 11.1 | 11.1 mg/l |
| 3 Dec 2024, 09:20 | 8.58 | 8.58 mg/l |
| 7 Nov 2024, 15:24 | 6.04 | 6.04 mg/l |
| 2 Oct 2024, 12:26 | 7.03 | 7.03 mg/l |
| 6 Sep 2024, 09:12 | 7.82 | 7.82 mg/l |
| 2 Aug 2024, 15:22 | 4.42 | 4.42 mg/l |
| 2 Jul 2024, 09:00 | 7.95 | 7.95 mg/l |
| 3 Jun 2024, 13:11 | 7.38 | 7.38 mg/l |
| 1 Mar 2024, 08:51 | 10.1 | 10.1 mg/l |
| 5 Feb 2024, 10:51 | 8.95 | 8.95 mg/l |
| 17 Jan 2024, 15:11 | 9.77 | 9.77 mg/l |
| 1 Dec 2023, 09:15 | 8.5 | 8.5 mg/l |
| 6 Nov 2023, 11:14 | 6.52 | 6.52 mg/l |
| 2 Oct 2023, 08:52 | 3.96 | 3.96 mg/l |
Water temperature
code 0076 · °C
18.8 °C
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 10:24 | 18.8 | 18.8 °C |
| 6 Jul 2026, 10:07 | 19.8 | 19.8 °C |
| 16 Jun 2026, 09:53 | 17.2 | 17.2 °C |
| 29 May 2026, 13:16 | 18.9 | 18.9 °C |
| 10 Apr 2026, 08:53 | 9.3 | 9.3 °C |
| 4 Mar 2026, 10:53 | 8.2 | 8.2 °C |
| 5 Feb 2026, 10:03 | 6.4 | 6.4 °C |
| 8 Jan 2026, 10:23 | 4.7 | 4.7 °C |
| 3 Dec 2025, 09:35 | 5.7 | 5.7 °C |
| 18 Nov 2025, 11:38 | 7.4 | 7.4 °C |
| 31 Oct 2025, 09:40 | 11.6 | 11.6 °C |
| 8 Sep 2025, 13:27 | 17.2 | 17.2 °C |
| 5 Aug 2025, 08:52 | 15.3 | 15.3 °C |
| 14 Jul 2025, 11:37 | 19.4 | 19.4 °C |
| 23 Jun 2025, 10:16 | 16 | 16 °C |
| 29 May 2025, 09:33 | 14.6 | 14.6 °C |
| 9 Apr 2025, 09:03 | 8.2 | 8.2 °C |
| 7 Mar 2025, 09:31 | 7.4 | 7.4 °C |
| 18 Feb 2025, 12:39 | 4.1 | 4.1 °C |
| 7 Jan 2025, 13:10 | 5.2 | 5.2 °C |
| 3 Dec 2024, 09:20 | 7.9 | 7.9 °C |
| 7 Nov 2024, 15:24 | 11.5 | 11.5 °C |
| 2 Oct 2024, 12:26 | 13.5 | 13.5 °C |
| 6 Sep 2024, 09:12 | 17.3 | 17.3 °C |
| 2 Aug 2024, 15:22 | 19.4 | 19.4 °C |
| 2 Jul 2024, 09:00 | 14.5 | 14.5 °C |
| 3 Jun 2024, 13:11 | 14 | 14 °C |
| 1 Mar 2024, 08:51 | 6.9 | 6.9 °C |
| 5 Feb 2024, 10:51 | 8.8 | 8.8 °C |
| 17 Jan 2024, 15:11 | 4.1 | 4.1 °C |
| 1 Dec 2023, 09:15 | 4.8 | 4.8 °C |
| 6 Nov 2023, 11:14 | 10.1 | 10.1 °C |
| 2 Oct 2023, 08:52 | 15.8 | 15.8 °C |
pH
code 0061
7.46
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 10:24 | 7.46 | 7.46 |
| 6 Jul 2026, 10:07 | 7.54 | 7.54 |
| 16 Jun 2026, 09:53 | 7.55 | 7.55 |
| 29 May 2026, 13:16 | 7.76 | 7.76 |
| 10 Apr 2026, 08:53 | 7.73 | 7.73 |
| 4 Mar 2026, 10:53 | 7.75 | 7.75 |
| 5 Feb 2026, 10:03 | 7.8 | 7.8 |
| 8 Jan 2026, 10:23 | 7.7 | 7.7 |
| 3 Dec 2025, 09:35 | 7.99 | 7.99 |
| 18 Nov 2025, 11:38 | 7.68 | 7.68 |
| 31 Oct 2025, 09:40 | 7.93 | 7.93 |
| 8 Sep 2025, 13:27 | 7.95 | 7.95 |
| 5 Aug 2025, 08:52 | 7.56 | 7.56 |
| 14 Jul 2025, 11:37 | 7.58 | 7.58 |
| 23 Jun 2025, 10:16 | 7.6 | 7.6 |
| 29 May 2025, 09:33 | 7.54 | 7.54 |
| 9 Apr 2025, 09:03 | 7.68 | 7.68 |
| 7 Mar 2025, 09:31 | 7.7 | 7.7 |
| 18 Feb 2025, 12:39 | 7.86 | 7.86 |
| 7 Jan 2025, 13:10 | 7.94 | 7.94 |
| 3 Dec 2024, 09:20 | 7.77 | 7.77 |
| 7 Nov 2024, 15:24 | 7.63 | 7.63 |
| 2 Oct 2024, 12:26 | 7.66 | 7.66 |
| 6 Sep 2024, 09:12 | 7.35 | 7.35 |
| 2 Aug 2024, 15:22 | 7.45 | 7.45 |
| 2 Jul 2024, 09:00 | 7.74 | 7.74 |
| 3 Jun 2024, 13:11 | 7.97 | 7.97 |
| 1 Mar 2024, 08:51 | 7.81 | 7.81 |
| 5 Feb 2024, 10:51 | 7.95 | 7.95 |
| 17 Jan 2024, 15:11 | 7.68 | 7.68 |
| 1 Dec 2023, 09:15 | 7.63 | 7.63 |
| 6 Nov 2023, 11:14 | 7.65 | 7.65 |
| 2 Oct 2023, 08:52 | 8.79 | 8.79 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.28 mg/l
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 10:24 | 0.28 | 0.28 mg/l |
| 6 Jul 2026, 10:07 | 0.033 | 0.033 mg/l |
| 16 Jun 2026, 09:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 May 2026, 13:16 | 0.037 | 0.037 mg/l |
| 10 Apr 2026, 08:53 | 0.059 | 0.059 mg/l |
| 4 Mar 2026, 10:53 | 0.04 | 0.04 mg/l |
| 5 Feb 2026, 10:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Jan 2026, 10:23 | 0.1 | 0.1 mg/l |
| 3 Dec 2025, 09:35 | 0.032 | 0.032 mg/l |
| 18 Nov 2025, 11:38 | 0.082 | 0.082 mg/l |
| 31 Oct 2025, 09:40 | 0.05 | 0.05 mg/l |
| 8 Sep 2025, 13:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2025, 08:52 | 0.064 | 0.064 mg/l |
| 14 Jul 2025, 11:37 | 0.037 | 0.037 mg/l |
| 23 Jun 2025, 10:16 | 0.079 | 0.079 mg/l |
| 29 May 2025, 09:33 | 0.14 | 0.14 mg/l |
| 9 Apr 2025, 09:03 | 0.074 | 0.074 mg/l |
| 7 Mar 2025, 09:31 | 0.087 | 0.087 mg/l |
| 18 Feb 2025, 12:39 | 0.073 | 0.073 mg/l |
| 7 Jan 2025, 13:10 | 0.091 | 0.091 mg/l |
| 3 Dec 2024, 09:20 | 0.039 | 0.039 mg/l |
| 7 Nov 2024, 15:24 | 0.071 | 0.071 mg/l |
| 2 Oct 2024, 12:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Sep 2024, 09:12 | 0.049 | 0.049 mg/l |
| 2 Aug 2024, 15:22 | 0.055 | 0.055 mg/l |
| 2 Jul 2024, 09:00 | 0.057 | 0.057 mg/l |
| 3 Jun 2024, 13:11 | 0.072 | 0.072 mg/l |
| 1 Mar 2024, 08:51 | 0.073 | 0.073 mg/l |
| 5 Feb 2024, 10:51 | 0.086 | 0.086 mg/l |
| 17 Jan 2024, 15:11 | 0.085 | 0.085 mg/l |
| 1 Dec 2023, 09:15 | 0.057 | 0.057 mg/l |
| 6 Nov 2023, 11:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Oct 2023, 08:52 | 0.078 | 0.078 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
7.42 mg/l
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 10:24 | 7.42 | 7.42 mg/l |
| 6 Jul 2026, 10:07 | 1.74 | 1.74 mg/l |
| 16 Jun 2026, 09:53 | 3.48 | 3.48 mg/l |
| 29 May 2026, 13:16 | 1.68 | 1.68 mg/l |
| 10 Apr 2026, 08:53 | 3.69 | 3.69 mg/l |
| 4 Mar 2026, 10:53 | 4.8 | 4.8 mg/l |
| 5 Feb 2026, 10:03 | 6.4 | 6.4 mg/l |
| 8 Jan 2026, 10:23 | 5.19 | 5.19 mg/l |
| 3 Dec 2025, 09:35 | 20 | 20 mg/l |
| 18 Nov 2025, 11:38 | 13.9 | 13.9 mg/l |
| 31 Oct 2025, 09:40 | 3.08 | 3.08 mg/l |
| 8 Sep 2025, 13:27 | 1.57 | 1.57 mg/l |
| 5 Aug 2025, 08:52 | 1.77 | 1.77 mg/l |
| 14 Jul 2025, 11:37 | 1.97 | 1.97 mg/l |
| 23 Jun 2025, 10:16 | 1.78 | 1.78 mg/l |
| 29 May 2025, 09:33 | 2.56 | 2.56 mg/l |
| 9 Apr 2025, 09:03 | 4.58 | 4.58 mg/l |
| 7 Mar 2025, 09:31 | 5.09 | 5.09 mg/l |
| 18 Feb 2025, 12:39 | 5.09 | 5.09 mg/l |
| 7 Jan 2025, 13:10 | 6.18 | 6.18 mg/l |
| 3 Dec 2024, 09:20 | 5.17 | 5.17 mg/l |
| 7 Nov 2024, 15:24 | 3.67 | 3.67 mg/l |
| 2 Oct 2024, 12:26 | 9.97 | 9.97 mg/l |
| 6 Sep 2024, 09:12 | 3.78 | 3.78 mg/l |
| 2 Aug 2024, 15:22 | 3.07 | 3.07 mg/l |
| 2 Jul 2024, 09:00 | 3.78 | 3.78 mg/l |
| 3 Jun 2024, 13:11 | 3.77 | 3.77 mg/l |
| 1 Mar 2024, 08:51 | 2.98 | 2.98 mg/l |
| 5 Feb 2024, 10:51 | 4.48 | 4.48 mg/l |
| 17 Jan 2024, 15:11 | 4.99 | 4.99 mg/l |
| 1 Dec 2023, 09:15 | 5.19 | 5.19 mg/l |
| 6 Nov 2023, 11:14 | 8.87 | 8.87 mg/l |
| 2 Oct 2023, 08:52 | 1.76 | 1.76 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.025 mg/l
Sampled 6 Jul 2026, 3 months ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jul 2026, 10:07 | 0.025 | 0.025 mg/l |
| 16 Jun 2026, 09:53 | 0.087 | 0.087 mg/l |
| 29 May 2026, 13:16 | 0.098 | 0.098 mg/l |
| 10 Apr 2026, 08:53 | 0.2 | 0.2 mg/l |
| 4 Mar 2026, 10:53 | 0.14 | 0.14 mg/l |
| 5 Feb 2026, 10:03 | 0.11 | 0.11 mg/l |
| 8 Jan 2026, 10:23 | 0.24 | 0.24 mg/l |
| 3 Dec 2025, 09:35 | 0.11 | 0.11 mg/l |
| 18 Nov 2025, 11:38 | 0.15 | 0.15 mg/l |
| 31 Oct 2025, 09:40 | 0.3 | 0.3 mg/l |
| 8 Sep 2025, 13:27 | 0.092 | 0.092 mg/l |
| 5 Aug 2025, 08:52 | 0.18 | 0.18 mg/l |
| 14 Jul 2025, 11:37 | 0.085 | 0.085 mg/l |
| 23 Jun 2025, 10:16 | 0.1 | 0.1 mg/l |
| 29 May 2025, 09:33 | 0.1 | 0.1 mg/l |
| 9 Apr 2025, 09:03 | 0.063 | 0.063 mg/l |
| 7 Mar 2025, 09:31 | 0.069 | 0.069 mg/l |
| 18 Feb 2025, 12:39 | 0.072 | 0.072 mg/l |
| 7 Jan 2025, 13:10 | 0.093 | 0.093 mg/l |
| 3 Dec 2024, 09:20 | 0.094 | 0.094 mg/l |
| 7 Nov 2024, 15:24 | 0.093 | 0.093 mg/l |
| 2 Oct 2024, 12:26 | 0.099 | 0.099 mg/l |
| 6 Sep 2024, 09:12 | 0.035 | 0.035 mg/l |
| 2 Aug 2024, 15:22 | 0.098 | 0.098 mg/l |
| 2 Jul 2024, 09:00 | 0.13 | 0.13 mg/l |
| 3 Jun 2024, 13:11 | 0.1 | 0.1 mg/l |
| 1 Mar 2024, 08:51 | 0.092 | 0.092 mg/l |
| 5 Feb 2024, 10:51 | 0.1 | 0.1 mg/l |
| 17 Jan 2024, 15:11 | 0.077 | 0.077 mg/l |
| 1 Dec 2023, 09:15 | 0.089 | 0.089 mg/l |
| 6 Nov 2023, 11:14 | 0.14 | 0.14 mg/l |
| 2 Oct 2023, 08:52 | 0.065 | 0.065 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
774 µS/cm
Sampled 3 Aug 2026, 59 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Aug 2026, 10:24 | 774 | 774 µS/cm |
| 6 Jul 2026, 10:07 | 604 | 604 µS/cm |
| 16 Jun 2026, 09:53 | 654 | 654 µS/cm |
| 29 May 2026, 13:16 | 701 | 701 µS/cm |
| 10 Apr 2026, 08:53 | 732 | 732 µS/cm |
| 4 Mar 2026, 10:53 | 767 | 767 µS/cm |
| 5 Feb 2026, 10:03 | 657 | 657 µS/cm |
| 8 Jan 2026, 10:23 | 873 | 873 µS/cm |
| 3 Dec 2025, 09:35 | 788 | 788 µS/cm |
| 18 Nov 2025, 11:38 | 870 | 870 µS/cm |
| 31 Oct 2025, 09:40 | 772 | 772 µS/cm |
| 8 Sep 2025, 13:27 | 823 | 823 µS/cm |
| 5 Aug 2025, 08:52 | 773 | 773 µS/cm |
| 14 Jul 2025, 11:37 | 698 | 698 µS/cm |
| 23 Jun 2025, 10:16 | 730 | 730 µS/cm |
| 29 May 2025, 09:33 | 725 | 725 µS/cm |
| 9 Apr 2025, 09:03 | 773 | 773 µS/cm |
| 7 Mar 2025, 09:31 | 826 | 826 µS/cm |
| 18 Feb 2025, 12:39 | 829 | 829 µS/cm |
| 7 Jan 2025, 13:10 | 793 | 793 µS/cm |
| 3 Dec 2024, 09:20 | 789 | 789 µS/cm |
| 7 Nov 2024, 15:24 | 784 | 784 µS/cm |
| 2 Oct 2024, 12:26 | 671 | 671 µS/cm |
| 6 Sep 2024, 09:12 | 589 | 589 µS/cm |
| 2 Aug 2024, 15:22 | 713 | 713 µS/cm |
| 2 Jul 2024, 09:00 | 742 | 742 µS/cm |
| 3 Jun 2024, 13:11 | 800 | 800 µS/cm |
| 1 Mar 2024, 08:51 | 651 | 651 µS/cm |
| 5 Feb 2024, 10:51 | 832 | 832 µS/cm |
| 17 Jan 2024, 15:11 | 847 | 847 µS/cm |
| 1 Dec 2023, 09:15 | 841 | 841 µS/cm |
| 6 Nov 2023, 11:14 | 756 | 756 µS/cm |
| 2 Oct 2023, 08:52 | 779 | 779 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 | 33 | Oct 2023 – Aug 2026 | 57.6% 3 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 33 | Oct 2023 – Aug 2026 | 5.35 mg/l 3 Aug 2026 |
| Temperature of Water 0076 | River water | 33 | Oct 2023 – Aug 2026 | 18.8 °C 3 Aug 2026 |
| pH 0061 | River water | 33 | Oct 2023 – Aug 2026 | 7.46 3 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 33 | Oct 2023 – Aug 2026 | 0.28 mg/l 3 Aug 2026 |
| Nitrate as N 0117 | River water | 33 | Oct 2023 – Aug 2026 | 7.42 mg/l 3 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 32 | Oct 2023 – Jul 2026 | 0.025 mg/l 6 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 33 | Oct 2023 – Aug 2026 | 774 µS/cm 3 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 33 | Oct 2023 – Aug 2026 | 210 mg/l 3 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 33 | Oct 2023 – Aug 2026 | 0.00286 mg/l 3 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 27 | Oct 2023 – Mar 2026 | 1.3 mg/l 4 Mar 2026 |
| Nitrite as N 0118 | River water | 33 | Oct 2023 – Aug 2026 | 0.28 mg/l 3 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 33 | Oct 2023 – Aug 2026 | 7.7 mg/l 3 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.