Holton Brook above River Thame
EA name: HOLTON BROOK ABOVE RIVER THAME
Environment Agency sampling point TH-PTAR0014 · 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
- 4 Sep 2026, 13:1427 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 34 since 10 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 461800, 206200As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Holton Brook
- River, by the map
- Holton BrookPlaced on the river its name gives, 25 m from the line.
- Next gauge downstream
- Wheatley On the River Thame · 1.7 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (34 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
75.6%
Sampled 4 Sep 2026, 27 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:14 | 75.6 | 75.6% |
| 13 Aug 2026, 13:28 | 75.4 | 75.4% |
| 13 Jul 2026, 13:52 | 71.9 | 71.9% |
| 8 Jun 2026, 13:33 | 77.8 | 77.8% |
| 20 May 2026, 09:40 | 85.1 | 85.1% |
| 27 Apr 2026, 09:29 | 92.6 | 92.6% |
| 5 Mar 2026, 12:18 | 96.8 | 96.8% |
| 17 Feb 2026, 12:04 | 90.3 | 90.3% |
| 2 Jan 2026, 14:11 | 88.9 | 88.9% |
| 9 Dec 2025, 10:37 | 84.7 | 84.7% |
| 24 Nov 2025, 12:05 | 81 | 81% |
| 30 Oct 2025, 09:16 | 71.3 | 71.3% |
| 26 Sep 2025, 08:56 | 86.1 | 86.1% |
| 29 Aug 2025, 13:34 | 76.9 | 76.9% |
| 29 Jul 2025, 09:52 | 84.8 | 84.8% |
| 25 Jun 2025, 10:06 | 76.7 | 76.7% |
| 15 May 2025, 12:08 | 87.4 | 87.4% |
| 30 Apr 2025, 11:44 | 103.3 | 103.3% |
| 5 Mar 2025, 14:38 | 97.5 | 97.5% |
| 10 Feb 2025, 10:37 | 89.3 | 89.3% |
| 7 Jan 2025, 11:02 | 84.4 | 84.4% |
| 6 Dec 2024, 12:43 | 86.8 | 86.8% |
| 1 Nov 2024, 10:16 | 78.8 | 78.8% |
| 4 Oct 2024, 14:11 | 71.1 | 71.1% |
| 11 Sep 2024, 12:20 | 84.2 | 84.2% |
| 5 Aug 2024, 11:53 | 84.4 | 84.4% |
| 1 Jul 2024, 11:07 | 84.3 | 84.3% |
| 14 Jun 2024, 12:30 | 92.2 | 92.2% |
| 7 Mar 2024, 12:38 | 91 | 91% |
| 5 Feb 2024, 11:27 | 88.9 | 88.9% |
| 17 Jan 2024, 12:43 | 90.1 | 90.1% |
| 8 Dec 2023, 12:20 | 82.1 | 82.1% |
| 10 Nov 2023, 11:38 | 70.9 | 70.9% |
| 10 Oct 2023, 10:12 | 72.6 | 72.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.24 mg/l
Sampled 4 Sep 2026, 27 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:14 | 7.24 | 7.24 mg/l |
| 13 Aug 2026, 13:28 | 6.99 | 6.99 mg/l |
| 13 Jul 2026, 13:52 | 6.85 | 6.85 mg/l |
| 8 Jun 2026, 13:33 | 8.02 | 8.02 mg/l |
| 20 May 2026, 09:40 | 9.13 | 9.13 mg/l |
| 27 Apr 2026, 09:29 | 10.5 | 10.5 mg/l |
| 5 Mar 2026, 12:18 | 11.3 | 11.3 mg/l |
| 17 Feb 2026, 12:04 | 11.4 | 11.4 mg/l |
| 2 Jan 2026, 14:11 | 11.8 | 11.8 mg/l |
| 9 Dec 2025, 10:37 | 9.48 | 9.48 mg/l |
| 24 Nov 2025, 12:05 | 9.89 | 9.89 mg/l |
| 30 Oct 2025, 09:16 | 8.37 | 8.37 mg/l |
| 26 Sep 2025, 08:56 | 10.1 | 10.1 mg/l |
| 29 Aug 2025, 13:34 | 7.73 | 7.73 mg/l |
| 29 Jul 2025, 09:52 | 8.49 | 8.49 mg/l |
| 25 Jun 2025, 10:06 | 7.35 | 7.35 mg/l |
| 15 May 2025, 12:08 | 9.46 | 9.46 mg/l |
| 30 Apr 2025, 11:44 | 11 | 11 mg/l |
| 5 Mar 2025, 14:38 | 12.1 | 12.1 mg/l |
| 10 Feb 2025, 10:37 | 11.5 | 11.5 mg/l |
| 7 Jan 2025, 11:02 | 11.3 | 11.3 mg/l |
| 6 Dec 2024, 12:43 | 10.5 | 10.5 mg/l |
| 1 Nov 2024, 10:16 | 8.82 | 8.82 mg/l |
| 4 Oct 2024, 14:11 | 7.7 | 7.7 mg/l |
| 11 Sep 2024, 12:20 | 9.01 | 9.01 mg/l |
| 5 Aug 2024, 11:53 | 8.26 | 8.26 mg/l |
| 1 Jul 2024, 11:07 | 8.53 | 8.53 mg/l |
| 14 Jun 2024, 12:30 | 9.74 | 9.74 mg/l |
| 7 Mar 2024, 12:38 | 11.1 | 11.1 mg/l |
| 5 Feb 2024, 11:27 | 10.3 | 10.3 mg/l |
| 17 Jan 2024, 12:43 | 12.3 | 12.3 mg/l |
| 8 Dec 2023, 12:20 | 10.2 | 10.2 mg/l |
| 10 Nov 2023, 11:38 | 8.26 | 8.26 mg/l |
| 10 Oct 2023, 10:12 | 7.56 | 7.56 mg/l |
Water temperature
code 0076 · °C
17.3 °C
Sampled 4 Sep 2026, 27 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:14 | 17.3 | 17.3 °C |
| 13 Aug 2026, 13:28 | 18.9 | 18.9 °C |
| 13 Jul 2026, 13:52 | 17.6 | 17.6 °C |
| 8 Jun 2026, 13:33 | 13.9 | 13.9 °C |
| 20 May 2026, 09:40 | 12.1 | 12.1 °C |
| 27 Apr 2026, 09:29 | 9.9 | 9.9 °C |
| 5 Mar 2026, 12:18 | 8.6 | 8.6 °C |
| 17 Feb 2026, 12:04 | 5.4 | 5.4 °C |
| 2 Jan 2026, 14:11 | 3.5 | 3.5 °C |
| 9 Dec 2025, 10:37 | 10.3 | 10.3 °C |
| 24 Nov 2025, 12:05 | 6.7 | 6.7 °C |
| 30 Oct 2025, 09:16 | 8.3 | 8.3 °C |
| 26 Sep 2025, 08:56 | 8.4 | 8.4 °C |
| 29 Aug 2025, 13:34 | 15 | 15 °C |
| 29 Jul 2025, 09:52 | 15.2 | 15.2 °C |
| 25 Jun 2025, 10:06 | 17.3 | 17.3 °C |
| 15 May 2025, 12:08 | 11.7 | 11.7 °C |
| 30 Apr 2025, 11:44 | 12.4 | 12.4 °C |
| 5 Mar 2025, 14:38 | 6.1 | 6.1 °C |
| 10 Feb 2025, 10:37 | 4.5 | 4.5 °C |
| 7 Jan 2025, 11:02 | 3.1 | 3.1 °C |
| 6 Dec 2024, 12:43 | 7 | 7 °C |
| 1 Nov 2024, 10:16 | 10.3 | 10.3 °C |
| 4 Oct 2024, 14:11 | 11.7 | 11.7 °C |
| 11 Sep 2024, 12:20 | 12.2 | 12.2 °C |
| 5 Aug 2024, 11:53 | 16.3 | 16.3 °C |
| 1 Jul 2024, 11:07 | 14.7 | 14.7 °C |
| 14 Jun 2024, 12:30 | 12.8 | 12.8 °C |
| 7 Mar 2024, 12:38 | 6.7 | 6.7 °C |
| 5 Feb 2024, 11:27 | 8.8 | 8.8 °C |
| 17 Jan 2024, 12:43 | 2.4 | 2.4 °C |
| 8 Dec 2023, 12:20 | 6.2 | 6.2 °C |
| 10 Nov 2023, 11:38 | 8.6 | 8.6 °C |
| 10 Oct 2023, 10:12 | 13.4 | 13.4 °C |
pH
code 0061
7.87
Sampled 4 Sep 2026, 27 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:14 | 7.87 | 7.87 |
| 13 Aug 2026, 13:28 | 7.84 | 7.84 |
| 13 Jul 2026, 13:52 | 7.97 | 7.97 |
| 8 Jun 2026, 13:33 | 7.96 | 7.96 |
| 20 May 2026, 09:40 | 7.99 | 7.99 |
| 27 Apr 2026, 09:29 | 8.14 | 8.14 |
| 5 Mar 2026, 12:18 | 8.02 | 8.02 |
| 17 Feb 2026, 12:04 | 8.01 | 8.01 |
| 2 Jan 2026, 14:11 | 8.03 | 8.03 |
| 9 Dec 2025, 10:37 | 7.75 | 7.75 |
| 24 Nov 2025, 12:05 | 7.79 | 7.79 |
| 30 Oct 2025, 09:16 | 7.91 | 7.91 |
| 26 Sep 2025, 08:56 | 8.17 | 8.17 |
| 29 Aug 2025, 13:34 | 7.91 | 7.91 |
| 29 Jul 2025, 09:52 | 8.03 | 8.03 |
| 25 Jun 2025, 10:06 | 7.98 | 7.98 |
| 15 May 2025, 12:08 | 8.16 | 8.16 |
| 30 Apr 2025, 11:44 | 8.03 | 8.03 |
| 5 Mar 2025, 14:38 | 7.99 | 7.99 |
| 10 Feb 2025, 10:37 | 7.78 | 7.78 |
| 7 Jan 2025, 11:02 | 7.87 | 7.87 |
| 6 Dec 2024, 12:43 | 7.72 | 7.72 |
| 1 Nov 2024, 10:16 | 7.93 | 7.93 |
| 4 Oct 2024, 14:11 | 7.64 | 7.64 |
| 11 Sep 2024, 12:20 | 7.98 | 7.98 |
| 5 Aug 2024, 11:53 | 8.11 | 8.11 |
| 1 Jul 2024, 11:07 | 8.18 | 8.18 |
| 14 Jun 2024, 12:30 | 8.17 | 8.17 |
| 7 Mar 2024, 12:38 | 8.02 | 8.02 |
| 5 Feb 2024, 11:27 | 8.47 | 8.47 |
| 17 Jan 2024, 12:43 | 8.06 | 8.06 |
| 8 Dec 2023, 12:20 | 7.66 | 7.66 |
| 10 Nov 2023, 11:38 | 7.72 | 7.72 |
| 10 Oct 2023, 10:12 | 7.9 | 7.9 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 4 Sep 2026, 27 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Aug 2026, 13:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jul 2026, 13:52 | 0.03 | 0.03 mg/l |
| 8 Jun 2026, 13:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 May 2026, 09:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Apr 2026, 09:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Mar 2026, 12:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Feb 2026, 12:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jan 2026, 14:11 | 0.037 | 0.037 mg/l |
| 9 Dec 2025, 10:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Nov 2025, 12:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Oct 2025, 09:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Sep 2025, 08:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Aug 2025, 13:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Jul 2025, 09:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jun 2025, 10:06 | 0.032 | 0.032 mg/l |
| 15 May 2025, 12:08 | 0.031 | 0.031 mg/l |
| 30 Apr 2025, 11:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Mar 2025, 14:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Feb 2025, 10:37 | 0.044 | 0.044 mg/l |
| 7 Jan 2025, 11:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Dec 2024, 12:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Nov 2024, 10:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Oct 2024, 14:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Sep 2024, 12:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2024, 11:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Jul 2024, 11:07 | 0.049 | 0.049 mg/l |
| 14 Jun 2024, 12:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Mar 2024, 12:38 | 0.058 | 0.058 mg/l |
| 5 Feb 2024, 11:27 | 0.054 | 0.054 mg/l |
| 17 Jan 2024, 12:43 | 0.12 | 0.12 mg/l |
| 8 Dec 2023, 12:20 | 0.03 | 0.03 mg/l |
| 10 Nov 2023, 11:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Oct 2023, 10:12 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.29 mg/l
Sampled 4 Sep 2026, 27 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:14 | 3.29 | 3.29 mg/l |
| 13 Aug 2026, 13:28 | 3.79 | 3.79 mg/l |
| 13 Jul 2026, 13:52 | 4.19 | 4.19 mg/l |
| 8 Jun 2026, 13:33 | 4.58 | 4.58 mg/l |
| 20 May 2026, 09:40 | 5.78 | 5.78 mg/l |
| 27 Apr 2026, 09:29 | 6.09 | 6.09 mg/l |
| 5 Mar 2026, 12:18 | 5.59 | 5.59 mg/l |
| 17 Feb 2026, 12:04 | 3.19 | 3.19 mg/l |
| 2 Jan 2026, 14:11 | 7.07 | 7.07 mg/l |
| 9 Dec 2025, 10:37 | 6.68 | 6.68 mg/l |
| 24 Nov 2025, 12:05 | 12 | 12 mg/l |
| 30 Oct 2025, 09:16 | 3.79 | 3.79 mg/l |
| 26 Sep 2025, 08:56 | 5.49 | 5.49 mg/l |
| 29 Aug 2025, 13:34 | 4.79 | 4.79 mg/l |
| 29 Jul 2025, 09:52 | 4.8 | 4.8 mg/l |
| 25 Jun 2025, 10:06 | 5.78 | 5.78 mg/l |
| 15 May 2025, 12:08 | 5.67 | 5.67 mg/l |
| 30 Apr 2025, 11:44 | 6.28 | 6.28 mg/l |
| 5 Mar 2025, 14:38 | 5.18 | 5.18 mg/l |
| 10 Feb 2025, 10:37 | 2.29 | 2.29 mg/l |
| 7 Jan 2025, 11:02 | 2.49 | 2.49 mg/l |
| 6 Dec 2024, 12:43 | 1.79 | 1.79 mg/l |
| 1 Nov 2024, 10:16 | 5.19 | 5.19 mg/l |
| 4 Oct 2024, 14:11 | 3.09 | 3.09 mg/l |
| 11 Sep 2024, 12:20 | 6.09 | 6.09 mg/l |
| 5 Aug 2024, 11:53 | 6.79 | 6.79 mg/l |
| 1 Jul 2024, 11:07 | 6.68 | 6.68 mg/l |
| 14 Jun 2024, 12:30 | 6.99 | 6.99 mg/l |
| 7 Mar 2024, 12:38 | 5.61 | 5.61 mg/l |
| 17 Jan 2024, 12:43 | 7.43 | 7.43 mg/l |
| 8 Dec 2023, 12:20 | 3.29 | 3.29 mg/l |
| 10 Nov 2023, 11:38 | 4.98 | 4.98 mg/l |
| 10 Oct 2023, 10:12 | 5.89 | 5.89 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.076 mg/l
Sampled 4 Sep 2026, 27 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:14 | 0.076 | 0.076 mg/l |
| 13 Aug 2026, 13:28 | 0.082 | 0.082 mg/l |
| 13 Jul 2026, 13:52 | 0.11 | 0.11 mg/l |
| 8 Jun 2026, 13:33 | 0.1 | 0.1 mg/l |
| 20 May 2026, 09:40 | 0.059 | 0.059 mg/l |
| 27 Apr 2026, 09:29 | 0.033 | 0.033 mg/l |
| 5 Mar 2026, 12:18 | 0.071 | 0.071 mg/l |
| 17 Feb 2026, 12:04 | 0.07 | 0.07 mg/l |
| 2 Jan 2026, 14:11 | 0.071 | 0.071 mg/l |
| 9 Dec 2025, 10:37 | 0.091 | 0.091 mg/l |
| 24 Nov 2025, 12:05 | 0.068 | 0.068 mg/l |
| 30 Oct 2025, 09:16 | 0.059 | 0.059 mg/l |
| 26 Sep 2025, 08:56 | 0.058 | 0.058 mg/l |
| 29 Aug 2025, 13:34 | 0.069 | 0.069 mg/l |
| 29 Jul 2025, 09:52 | 0.09 | 0.09 mg/l |
| 25 Jun 2025, 10:06 | 0.1 | 0.1 mg/l |
| 15 May 2025, 12:08 | 0.048 | 0.048 mg/l |
| 30 Apr 2025, 11:44 | 0.043 | 0.043 mg/l |
| 5 Mar 2025, 14:38 | 0.047 | 0.047 mg/l |
| 10 Feb 2025, 10:37 | 0.053 | 0.053 mg/l |
| 7 Jan 2025, 11:02 | 0.055 | 0.055 mg/l |
| 6 Dec 2024, 12:43 | 0.063 | 0.063 mg/l |
| 1 Nov 2024, 10:16 | 0.061 | 0.061 mg/l |
| 4 Oct 2024, 14:11 | 0.095 | 0.095 mg/l |
| 11 Sep 2024, 12:20 | 0.087 | 0.087 mg/l |
| 5 Aug 2024, 11:53 | 0.082 | 0.082 mg/l |
| 1 Jul 2024, 11:07 | 0.084 | 0.084 mg/l |
| 14 Jun 2024, 12:30 | 0.081 | 0.081 mg/l |
| 7 Mar 2024, 12:38 | 0.08 | 0.08 mg/l |
| 5 Feb 2024, 11:27 | 0.082 | 0.082 mg/l |
| 17 Jan 2024, 12:43 | 0.077 | 0.077 mg/l |
| 8 Dec 2023, 12:20 | 0.07 | 0.07 mg/l |
| 10 Nov 2023, 11:38 | 0.073 | 0.073 mg/l |
| 10 Oct 2023, 10:12 | 0.095 | 0.095 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
848 µS/cm
Sampled 4 Sep 2026, 27 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Sep 2026, 13:14 | 848 | 848 µS/cm |
| 13 Aug 2026, 13:28 | 794 | 794 µS/cm |
| 13 Jul 2026, 13:52 | 779 | 779 µS/cm |
| 8 Jun 2026, 13:33 | 778 | 778 µS/cm |
| 20 May 2026, 09:40 | 793 | 793 µS/cm |
| 27 Apr 2026, 09:29 | 758 | 758 µS/cm |
| 5 Mar 2026, 12:18 | 717 | 717 µS/cm |
| 17 Feb 2026, 12:04 | 464 | 464 µS/cm |
| 2 Jan 2026, 14:11 | 800 | 800 µS/cm |
| 9 Dec 2025, 10:37 | 530 | 530 µS/cm |
| 24 Nov 2025, 12:05 | 678 | 678 µS/cm |
| 30 Oct 2025, 09:16 | 847 | 847 µS/cm |
| 26 Sep 2025, 08:56 | 805 | 805 µS/cm |
| 29 Aug 2025, 13:34 | 897 | 897 µS/cm |
| 29 Jul 2025, 09:52 | 759 | 759 µS/cm |
| 25 Jun 2025, 10:06 | 771 | 771 µS/cm |
| 15 May 2025, 12:08 | 771 | 771 µS/cm |
| 30 Apr 2025, 11:44 | 788 | 788 µS/cm |
| 5 Mar 2025, 14:38 | 719 | 719 µS/cm |
| 10 Feb 2025, 10:37 | 358 | 358 µS/cm |
| 7 Jan 2025, 11:02 | 380 | 380 µS/cm |
| 6 Dec 2024, 12:43 | 341 | 341 µS/cm |
| 1 Nov 2024, 10:16 | 746 | 746 µS/cm |
| 4 Oct 2024, 14:11 | 563 | 563 µS/cm |
| 11 Sep 2024, 12:20 | 793 | 793 µS/cm |
| 5 Aug 2024, 11:53 | 791 | 791 µS/cm |
| 1 Jul 2024, 11:07 | 788 | 788 µS/cm |
| 14 Jun 2024, 12:30 | 794 | 794 µS/cm |
| 7 Mar 2024, 12:38 | 709 | 709 µS/cm |
| 5 Feb 2024, 11:27 | 769 | 769 µS/cm |
| 17 Jan 2024, 12:43 | 778 | 778 µS/cm |
| 8 Dec 2023, 12:20 | 446 | 446 µS/cm |
| 10 Nov 2023, 11:38 | 670 | 670 µS/cm |
| 10 Oct 2023, 10:12 | 835 | 835 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 | 34 | Oct 2023 – Sep 2026 | 75.6% 4 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 34 | Oct 2023 – Sep 2026 | 7.24 mg/l 4 Sep 2026 |
| Temperature of Water 0076 | River water | 34 | Oct 2023 – Sep 2026 | 17.3 °C 4 Sep 2026 |
| pH 0061 | River water | 34 | Oct 2023 – Sep 2026 | 7.87 4 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 34 | Oct 2023 – Sep 2026 | below 0.03 mg/l 4 Sep 2026 |
| Nitrate as N 0117 | River water | 33 | Oct 2023 – Sep 2026 | 3.29 mg/l 4 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 34 | Oct 2023 – Sep 2026 | 0.076 mg/l 4 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 34 | Oct 2023 – Sep 2026 | 848 µS/cm 4 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 34 | Oct 2023 – Sep 2026 | 270 mg/l 4 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 34 | Oct 2023 – Sep 2026 | below 0.0007 mg/l 4 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 28 | Oct 2023 – Mar 2026 | 1.1 mg/l 5 Mar 2026 |
| Nitrite as N 0118 | River water | 33 | Oct 2023 – Sep 2026 | 0.0072 mg/l 4 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 34 | Oct 2023 – Sep 2026 | 3.3 mg/l 4 Sep 2026 |
| Phosphorus, Total as P 0348 | River water | 9 | Apr 2025 – Mar 2026 | 0.084 mg/l 5 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.