Nidd at Knaresborough B6163 Bridge
EA name: NIDD AT KNARESBOROUGH B6163 BRIDGE
Environment Agency sampling point NE-49800093 · 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
- 17 Sep 2026, 12:3414 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 34 since 11 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) · results completed 19 Sep 2026
- Where
- National Grid 434999, 456487As published, to the nearest 1 m. Open in a map
- River, by its own name
- Nidd
- River, by the map
- River NiddPlaced on the river its name gives, 9 m from the line.
- Next gauge downstream
- Hunsingore On the River Nidd · 17 km along the river
- Nearest gauge upstream
- Birstwith On the River Nidd · 17 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (28 samples)
Monitoring (national agency policy) (6 samples)
Results here were completed a median of 3 days after the sample was taken (2 to 13 days, 13 samples).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
95.9%
Sampled 17 Sep 2026, 14 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 12:34 | 95.9 | 95.9% |
| 28 Aug 2026, 14:03 | 86.7 | 86.7% |
| 16 Jul 2026, 10:47 | 111.5 | 111.5% |
| 19 Jun 2026, 11:48 | 104.4 | 104.4% |
| 29 May 2026, 13:12 | 99.4 | 99.4% |
| 15 Apr 2026, 12:46 | 105.5 | 105.5% |
| 23 Mar 2026, 13:23 | 104.7 | 104.7% |
| 27 Feb 2026, 13:27 | 100.9 | 100.9% |
| 27 Jan 2026, 12:48 | 100.6 | 100.6% |
| 8 Dec 2025, 13:04 | 100.1 | 100.1% |
| 17 Nov 2025, 11:47 | 99.2 | 99.2% |
| 20 Oct 2025, 13:10 | 95.6 | 95.6% |
| 30 Sep 2025, 13:59 | 97.8 | 97.8% |
| 8 Aug 2025, 12:27 | 111.5 | 111.5% |
| 4 Jul 2025, 11:42 | 109.1 | 109.1% |
| 10 Jun 2025, 13:04 | 101.6 | 101.6% |
| 8 May 2025, 12:18 | 100.1 | 100.1% |
| 2 Apr 2025, 11:49 | 112.7 | 112.7% |
| 4 Mar 2025, 11:47 | 104 | 104% |
| 5 Feb 2025, 12:48 | 98.8 | 98.8% |
| 7 Jan 2025, 11:11 | 99.2 | 99.2% |
| 4 Dec 2024, 11:10 | 100.6 | 100.6% |
| 4 Nov 2024, 10:45 | 87.6 | 87.6% |
| 2 Oct 2024, 11:26 | 102.1 | 102.1% |
| 10 Sep 2024, 09:30 | 91.6 | 91.6% |
| 2 Aug 2024, 11:44 | 105.8 | 105.8% |
| 4 Jul 2024, 12:09 | 104.5 | 104.5% |
| 7 Jun 2024, 11:12 | 105.5 | 105.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.67 mg/l
Sampled 17 Sep 2026, 14 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 12:34 | 9.67 | 9.67 mg/l |
| 28 Aug 2026, 14:03 | 8.24 | 8.24 mg/l |
| 16 Jul 2026, 10:47 | 10.3 | 10.3 mg/l |
| 19 Jun 2026, 11:48 | 10.1 | 10.1 mg/l |
| 29 May 2026, 13:12 | 9.31 | 9.31 mg/l |
| 15 Apr 2026, 12:46 | 11.6 | 11.6 mg/l |
| 23 Mar 2026, 13:23 | 12.3 | 12.3 mg/l |
| 27 Feb 2026, 13:27 | 11.7 | 11.7 mg/l |
| 27 Jan 2026, 12:48 | 12.7 | 12.7 mg/l |
| 8 Dec 2025, 13:04 | 11.9 | 11.9 mg/l |
| 17 Nov 2025, 11:47 | 11.8 | 11.8 mg/l |
| 20 Oct 2025, 13:10 | 10.4 | 10.4 mg/l |
| 30 Sep 2025, 13:59 | 10.5 | 10.5 mg/l |
| 8 Aug 2025, 12:27 | 10.7 | 10.7 mg/l |
| 4 Jul 2025, 11:42 | 10.4 | 10.4 mg/l |
| 10 Jun 2025, 13:04 | 9.96 | 9.96 mg/l |
| 8 May 2025, 12:18 | 10.7 | 10.7 mg/l |
| 2 Apr 2025, 11:49 | 12.6 | 12.6 mg/l |
| 4 Mar 2025, 11:47 | 12.6 | 12.6 mg/l |
| 5 Feb 2025, 12:48 | 12.3 | 12.3 mg/l |
| 7 Jan 2025, 11:11 | 13.2 | 13.2 mg/l |
| 4 Dec 2024, 11:10 | 12.7 | 12.7 mg/l |
| 4 Nov 2024, 10:45 | 9.82 | 9.82 mg/l |
| 2 Oct 2024, 11:26 | 10.9 | 10.9 mg/l |
| 10 Sep 2024, 09:30 | 9.31 | 9.31 mg/l |
| 2 Aug 2024, 11:44 | 9.65 | 9.65 mg/l |
| 4 Jul 2024, 12:09 | 10.4 | 10.4 mg/l |
| 7 Jun 2024, 11:12 | 11 | 11 mg/l |
Water temperature
code 0076 · °C
14.9 °C
Sampled 17 Sep 2026, 14 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 12:34 | 14.9 | 14.9 °C |
| 28 Aug 2026, 14:03 | 17.7 | 17.7 °C |
| 16 Jul 2026, 10:47 | 19.3 | 19.3 °C |
| 19 Jun 2026, 11:48 | 16.8 | 16.8 °C |
| 29 May 2026, 13:12 | 18.4 | 18.4 °C |
| 15 Apr 2026, 12:46 | 11 | 11 °C |
| 23 Mar 2026, 13:23 | 8.2 | 8.2 °C |
| 27 Feb 2026, 13:27 | 8.9 | 8.9 °C |
| 27 Jan 2026, 12:48 | 5.3 | 5.3 °C |
| 8 Dec 2025, 13:04 | 7.9 | 7.9 °C |
| 17 Nov 2025, 11:47 | 7.8 | 7.8 °C |
| 20 Oct 2025, 13:10 | 11.5 | 11.5 °C |
| 30 Sep 2025, 13:59 | 11.9 | 11.9 °C |
| 8 Aug 2025, 12:27 | 17.1 | 17.1 °C |
| 4 Jul 2025, 11:42 | 17.6 | 17.6 °C |
| 10 Jun 2025, 13:04 | 16.2 | 16.2 °C |
| 8 May 2025, 12:18 | 12.2 | 12.2 °C |
| 2 Apr 2025, 11:49 | 10.3 | 10.3 °C |
| 4 Mar 2025, 11:47 | 7 | 7 °C |
| 5 Feb 2025, 12:48 | 5.8 | 5.8 °C |
| 7 Jan 2025, 11:11 | 3.4 | 3.4 °C |
| 4 Dec 2024, 11:10 | 5.3 | 5.3 °C |
| 4 Nov 2024, 10:45 | 10.2 | 10.2 °C |
| 2 Oct 2024, 11:26 | 12.2 | 12.2 °C |
| 10 Sep 2024, 09:30 | 14.5 | 14.5 °C |
| 2 Aug 2024, 11:44 | 19.7 | 19.7 °C |
| 4 Jul 2024, 12:09 | 15.4 | 15.4 °C |
| 7 Jun 2024, 11:12 | 13.5 | 13.5 °C |
| 6 Mar 2024, 12:32 | 6 | 6 °C |
| 6 Feb 2024, 13:23 | 8 | 8 °C |
| 4 Jan 2024, 13:29 | 7.2 | 7.2 °C |
| 4 Dec 2023, 11:14 | 4.1 | 4.1 °C |
| 2 Nov 2023, 12:50 | 9.7 | 9.7 °C |
| 11 Oct 2023, 12:08 | 14.5 | 14.5 °C |
pH
code 0061
7.61
Sampled 17 Sep 2026, 14 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 12:34 | 7.61 | 7.61 |
| 28 Aug 2026, 14:03 | 7.4 | 7.4 |
| 16 Jul 2026, 10:47 | 8.12 | 8.12 |
| 19 Jun 2026, 11:48 | 7.73 | 7.73 |
| 29 May 2026, 13:12 | 7.83 | 7.83 |
| 15 Apr 2026, 12:46 | 7.98 | 7.98 |
| 23 Mar 2026, 13:23 | 7.84 | 7.84 |
| 27 Feb 2026, 13:27 | 7.77 | 7.77 |
| 27 Jan 2026, 12:48 | 7.67 | 7.67 |
| 8 Dec 2025, 13:04 | 7.43 | 7.43 |
| 17 Nov 2025, 11:47 | 7.63 | 7.63 |
| 20 Oct 2025, 13:10 | 7.54 | 7.54 |
| 30 Sep 2025, 13:59 | 7.57 | 7.57 |
| 8 Aug 2025, 12:27 | 7.64 | 7.64 |
| 4 Jul 2025, 11:42 | 8.18 | 8.18 |
| 10 Jun 2025, 13:04 | 7.79 | 7.79 |
| 8 May 2025, 12:18 | 7.93 | 7.93 |
| 2 Apr 2025, 11:49 | 8.1 | 8.1 |
| 4 Mar 2025, 11:47 | 7.83 | 7.83 |
| 5 Feb 2025, 12:48 | 7.71 | 7.71 |
| 7 Jan 2025, 11:11 | 7.59 | 7.59 |
| 4 Dec 2024, 11:10 | 7.56 | 7.56 |
| 4 Nov 2024, 10:45 | 7.78 | 7.78 |
| 2 Oct 2024, 11:26 | 7.78 | 7.78 |
| 10 Sep 2024, 09:30 | 7.79 | 7.79 |
| 2 Aug 2024, 11:44 | 7.88 | 7.88 |
| 4 Jul 2024, 12:09 | 8.01 | 8.01 |
| 7 Jun 2024, 11:12 | 7.94 | 7.94 |
| 6 Mar 2024, 12:32 | 7.7 | 7.7 |
| 6 Feb 2024, 13:23 | 7.5 | 7.5 |
| 4 Jan 2024, 13:29 | 7.6 | 7.6 |
| 4 Dec 2023, 11:14 | 7.8 | 7.8 |
| 2 Nov 2023, 12:50 | 7.5 | 7.5 |
| 11 Oct 2023, 12:08 | 7.7 | 7.7 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 17 Sep 2026, 14 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 12:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jul 2026, 10:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jun 2026, 11:48 | 0.04 | 0.04 mg/l |
| 29 May 2026, 13:12 | 0.093 | 0.093 mg/l |
| 15 Apr 2026, 12:46 | 0.2 | 0.2 mg/l |
| 23 Mar 2026, 13:23 | 0.074 | 0.074 mg/l |
| 27 Feb 2026, 13:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Jan 2026, 12:48 | 0.35 | 0.35 mg/l |
| 8 Dec 2025, 13:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Nov 2025, 11:47 | 0.037 | 0.037 mg/l |
| 20 Oct 2025, 13:10 | 0.05 | 0.05 mg/l |
| 30 Sep 2025, 13:59 | 0.059 | 0.059 mg/l |
| 8 Aug 2025, 12:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Jul 2025, 11:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jun 2025, 13:04 | 0.058 | 0.058 mg/l |
| 8 May 2025, 12:18 | 0.086 | 0.086 mg/l |
| 4 Mar 2025, 11:47 | 0.091 | 0.091 mg/l |
| 5 Feb 2025, 12:48 | 0.11 | 0.11 mg/l |
| 7 Jan 2025, 11:11 | 0.046 | 0.046 mg/l |
| 4 Dec 2024, 11:10 | 0.065 | 0.065 mg/l |
| 4 Nov 2024, 10:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Oct 2024, 11:26 | 0.037 | 0.037 mg/l |
| 10 Sep 2024, 09:30 | 0.031 | 0.031 mg/l |
| 2 Aug 2024, 11:44 | 0.088 | 0.088 mg/l |
| 4 Jul 2024, 12:09 | 0.079 | 0.079 mg/l |
| 7 Jun 2024, 11:12 | 0.042 | 0.042 mg/l |
| 6 Mar 2024, 12:32 | 0.072 | 0.072 mg/l |
| 6 Feb 2024, 13:23 | 0.072 | 0.072 mg/l |
| 4 Jan 2024, 13:29 | 0.072 | 0.072 mg/l |
| 4 Dec 2023, 11:14 | 0.31 | 0.31 mg/l |
| 2 Nov 2023, 12:50 | 0.13 | 0.13 mg/l |
| 11 Oct 2023, 12:08 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.38 mg/l
Sampled 17 Sep 2026, 14 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 12:34 | 2.38 | 2.38 mg/l |
| 16 Jul 2026, 10:47 | 2.57 | 2.57 mg/l |
| 19 Jun 2026, 11:48 | 3.04 | 3.04 mg/l |
| 29 May 2026, 13:12 | 2.53 | 2.53 mg/l |
| 15 Apr 2026, 12:46 | 2.84 | 2.84 mg/l |
| 23 Mar 2026, 13:23 | 2.18 | 2.18 mg/l |
| 27 Feb 2026, 13:27 | 1.89 | 1.89 mg/l |
| 27 Jan 2026, 12:48 | 2.09 | 2.09 mg/l |
| 8 Dec 2025, 13:04 | 1.5 | 1.5 mg/l |
| 17 Nov 2025, 11:47 | 2.09 | 2.09 mg/l |
| 20 Oct 2025, 13:10 | 1.88 | 1.88 mg/l |
| 30 Sep 2025, 13:59 | 1.39 | 1.39 mg/l |
| 8 Aug 2025, 12:27 | 2.08 | 2.08 mg/l |
| 4 Jul 2025, 11:42 | 2.66 | 2.66 mg/l |
| 10 Jun 2025, 13:04 | 2.53 | 2.53 mg/l |
| 8 May 2025, 12:18 | 2.84 | 2.84 mg/l |
| 4 Mar 2025, 11:47 | 2.38 | 2.38 mg/l |
| 5 Feb 2025, 12:48 | 2.09 | 2.09 mg/l |
| 7 Jan 2025, 11:11 | 1.09 | 1.09 mg/l |
| 4 Dec 2024, 11:10 | 1.79 | 1.79 mg/l |
| 4 Nov 2024, 10:45 | 1.87 | 1.87 mg/l |
| 2 Oct 2024, 11:26 | 1.49 | 1.49 mg/l |
| 10 Sep 2024, 09:30 | 2.96 | 2.96 mg/l |
| 2 Aug 2024, 11:44 | 3.29 | 3.29 mg/l |
| 4 Jul 2024, 12:09 | 2.91 | 2.91 mg/l |
| 7 Jun 2024, 11:12 | 2.37 | 2.37 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.083 mg/l
Sampled 17 Sep 2026, 14 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 12:34 | 0.083 | 0.083 mg/l |
| 16 Jul 2026, 10:47 | 0.058 | 0.058 mg/l |
| 19 Jun 2026, 11:48 | 0.073 | 0.073 mg/l |
| 29 May 2026, 13:12 | 0.1 | 0.1 mg/l |
| 15 Apr 2026, 12:46 | 0.046 | 0.046 mg/l |
| 23 Mar 2026, 13:23 | 0.051 | 0.051 mg/l |
| 27 Feb 2026, 13:27 | 0.042 | 0.042 mg/l |
| 27 Jan 2026, 12:48 | 0.062 | 0.062 mg/l |
| 8 Dec 2025, 13:04 | 0.031 | 0.031 mg/l |
| 17 Nov 2025, 11:47 | 0.028 | 0.028 mg/l |
| 20 Oct 2025, 13:10 | 0.074 | 0.074 mg/l |
| 30 Sep 2025, 13:59 | 0.041 | 0.041 mg/l |
| 8 Aug 2025, 12:27 | 0.076 | 0.076 mg/l |
| 4 Jul 2025, 11:42 | 0.14 | 0.14 mg/l |
| 10 Jun 2025, 13:04 | 0.16 | 0.16 mg/l |
| 8 May 2025, 12:18 | 0.11 | 0.11 mg/l |
| 4 Mar 2025, 11:47 | 0.043 | 0.043 mg/l |
| 5 Feb 2025, 12:48 | 0.034 | 0.034 mg/l |
| 7 Jan 2025, 11:11 | 0.023 | 0.023 mg/l |
| 4 Dec 2024, 11:10 | 0.036 | 0.036 mg/l |
| 4 Nov 2024, 10:45 | 0.041 | 0.041 mg/l |
| 2 Oct 2024, 11:26 | 0.046 | 0.046 mg/l |
| 10 Sep 2024, 09:30 | 0.15 | 0.15 mg/l |
| 2 Aug 2024, 11:44 | 0.16 | 0.16 mg/l |
| 4 Jul 2024, 12:09 | 0.14 | 0.14 mg/l |
| 7 Jun 2024, 11:12 | 0.085 | 0.085 mg/l |
| 6 Mar 2024, 12:32 | 0.037 | 0.037 mg/l |
| 6 Feb 2024, 13:23 | 0.034 | 0.034 mg/l |
| 4 Jan 2024, 13:29 | 0.035 | 0.035 mg/l |
| 4 Dec 2023, 11:14 | 0.054 | 0.054 mg/l |
| 2 Nov 2023, 12:50 | 0.089 | 0.089 mg/l |
| 11 Oct 2023, 12:08 | 0.041 | 0.041 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
268 µS/cm
Sampled 17 Sep 2026, 14 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 12:34 | 268 | 268 µS/cm |
| 28 Aug 2026, 14:03 | 295 | 295 µS/cm |
| 16 Jul 2026, 10:47 | 261 | 261 µS/cm |
| 19 Jun 2026, 11:48 | 294 | 294 µS/cm |
| 29 May 2026, 13:12 | 250 | 250 µS/cm |
| 15 Apr 2026, 12:46 | 257 | 257 µS/cm |
| 23 Mar 2026, 13:23 | 205 | 205 µS/cm |
| 27 Feb 2026, 13:27 | 174 | 174 µS/cm |
| 27 Jan 2026, 12:48 | 232 | 232 µS/cm |
| 8 Dec 2025, 13:04 | 123 | 123 µS/cm |
| 17 Nov 2025, 11:47 | 154 | 154 µS/cm |
| 20 Oct 2025, 13:10 | 203 | 203 µS/cm |
| 30 Sep 2025, 13:59 | 171 | 171 µS/cm |
| 8 Aug 2025, 12:27 | 276 | 276 µS/cm |
| 4 Jul 2025, 11:42 | 294 | 294 µS/cm |
| 10 Jun 2025, 13:04 | 264 | 264 µS/cm |
| 8 May 2025, 12:18 | 296 | 296 µS/cm |
| 2 Apr 2025, 11:49 | 268 | 268 µS/cm |
| 4 Mar 2025, 11:47 | 214 | 214 µS/cm |
| 5 Feb 2025, 12:48 | 193 | 193 µS/cm |
| 7 Jan 2025, 11:11 | 273 | 273 µS/cm |
| 4 Dec 2024, 11:10 | 193 | 193 µS/cm |
| 4 Nov 2024, 10:45 | 443 | 443 µS/cm |
| 2 Oct 2024, 11:26 | 143 | 143 µS/cm |
| 10 Sep 2024, 09:30 | 288 | 288 µS/cm |
| 2 Aug 2024, 11:44 | 296 | 296 µS/cm |
| 4 Jul 2024, 12:09 | 283 | 283 µS/cm |
| 7 Jun 2024, 11:12 | 255 | 255 µS/cm |
| 6 Mar 2024, 12:32 | 197 | 197 µS/cm |
| 6 Feb 2024, 13:23 | 150 | 150 µS/cm |
| 4 Jan 2024, 13:29 | 150 | 150 µS/cm |
| 4 Dec 2023, 11:14 | 345 | 345 µS/cm |
| 2 Nov 2023, 12:50 | 146 | 146 µS/cm |
| 11 Oct 2023, 12:08 | 145 | 145 µS/cm |
Everything measured here
57 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 57 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 28 | Jun 2024 – Sep 2026 | 95.9% 17 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 28 | Jun 2024 – Sep 2026 | 9.67 mg/l 17 Sep 2026 |
| Temperature of Water 0076 | River water | 34 | Oct 2023 – Sep 2026 | 14.9 °C 17 Sep 2026 |
| pH 0061 | River water | 34 | Oct 2023 – Sep 2026 | 7.61 17 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 32 | Oct 2023 – Sep 2026 | below 0.03 mg/l 17 Sep 2026 |
| Nitrate as N 0117 | River water | 26 | Jun 2024 – Sep 2026 | 2.38 mg/l 17 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 32 | Oct 2023 – Sep 2026 | 0.083 mg/l 17 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 34 | Oct 2023 – Sep 2026 | 268 µS/cm 17 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 32 | Oct 2023 – Sep 2026 | 70 mg/l 17 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 26 | Jun 2024 – Sep 2026 | below 0.00032 mg/l 17 Sep 2026 |
| Barium 6062 | River water | 6 | Oct 2023 – Mar 2024 | 68 µg/l 6 Mar 2024 |
| Barium, Dissolved 9446 | River water | 6 | Oct 2023 – Mar 2024 | 63 µg/l 6 Mar 2024 |
| Boron 6059 | River water | 6 | Oct 2023 – Mar 2024 | below 100 µg/l 6 Mar 2024 |
| Boron, Dissolved 9447 | River water | 6 | Oct 2023 – Mar 2024 | below 100 µg/l 6 Mar 2024 |
| Cadmium 0108 | River water | 6 | Oct 2023 – Mar 2024 | 0.14 µg/l 6 Mar 2024 |
| Cadmium, Dissolved 0106 | River water | 6 | Oct 2023 – Mar 2024 | 0.091 µg/l 6 Mar 2024 |
| Calcium 0241 | River water | 6 | Oct 2023 – Mar 2024 | 20 mg/l 6 Mar 2024 |
| Calcium, Dissolved 0239 | River water | 6 | Oct 2023 – Mar 2024 | 18 mg/l 6 Mar 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 6 | Oct 2023 – Mar 2024 | 6.1 mg/l 6 Mar 2024 |
| Chloride 0172 | River water | 6 | Oct 2023 – Mar 2024 | 15 mg/l 6 Mar 2024 |
| Chromium 3164 | River water | 6 | Oct 2023 – Mar 2024 | 0.52 µg/l 6 Mar 2024 |
| Chromium, Dissolved 3409 | River water | 6 | Oct 2023 – Mar 2024 | below 0.5 µg/l 6 Mar 2024 |
| Copper 6452 | River water | 6 | Oct 2023 – Mar 2024 | 2.5 µg/l 6 Mar 2024 |
| Copper : BLM Bioavailable 4821 | River water | 6 | Oct 2023 – Mar 2024 | 0.07 µg/l 6 Mar 2024 |
| Copper, Dissolved 6450 | River water | 6 | Oct 2023 – Mar 2024 | 1.7 µg/l 6 Mar 2024 |
| Hardness, Total as CaCO3 0158 | River water | 6 | Oct 2023 – Mar 2024 | 64.7 mg/l 6 Mar 2024 |
| Ionic Balance 7044 | River water | 6 | Oct 2023 – Mar 2024 | 2.62% 6 Mar 2024 |
| Iron 6051 | River water | 6 | Oct 2023 – Mar 2024 | 560 µg/l 6 Mar 2024 |
| Iron, Dissolved 6460 | River water | 6 | Oct 2023 – Mar 2024 | 250 µg/l 6 Mar 2024 |
| Lead 0050 | River water | 6 | Oct 2023 – Mar 2024 | 4.2 µg/l 6 Mar 2024 |
| Lead : BLM Bioavailable 3377 | River water | 6 | Oct 2023 – Mar 2024 | 0.26 µg/l 6 Mar 2024 |
| Lead, Dissolved 0052 | River water | 6 | Oct 2023 – Mar 2024 | 1.6 µg/l 6 Mar 2024 |
| Lithium 6064 | River water | 6 | Oct 2023 – Mar 2024 | below 100 µg/l 6 Mar 2024 |
| Lithium, Dissolved 4201 | River water | 6 | Oct 2023 – Mar 2024 | below 100 µg/l 6 Mar 2024 |
| Magnesium 0237 | River water | 6 | Oct 2023 – Mar 2024 | 5 mg/l 6 Mar 2024 |
| Magnesium, Dissolved 0235 | River water | 6 | Oct 2023 – Mar 2024 | 4.8 mg/l 6 Mar 2024 |
| Manganese 6050 | River water | 6 | Oct 2023 – Mar 2024 | 32 µg/l 6 Mar 2024 |
| Manganese : BLM Bioavailable 4820 | River water | 6 | Oct 2023 – Mar 2024 | 12 µg/l 6 Mar 2024 |
| Manganese, Dissolved 6458 | River water | 6 | Oct 2023 – Mar 2024 | 22 µg/l 6 Mar 2024 |
| Nickel 6462 | River water | 6 | Oct 2023 – Mar 2024 | 2.4 µg/l 6 Mar 2024 |
| Nickel : BLM Bioavailable 3878 | River water | 6 | Oct 2023 – Mar 2024 | 0.64 µg/l 6 Mar 2024 |
| Nickel, Dissolved 3410 | River water | 6 | Oct 2023 – Mar 2024 | 1.9 µg/l 6 Mar 2024 |
| Nitrite as N 0118 | River water | 32 | Oct 2023 – Sep 2026 | 0.017 mg/l 17 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 32 | Oct 2023 – Sep 2026 | 2.4 mg/l 17 Sep 2026 |
| Potassium 0211 | River water | 6 | Oct 2023 – Mar 2024 | 2.7 mg/l 6 Mar 2024 |
| Potassium, Dissolved 0209 | River water | 6 | Oct 2023 – Mar 2024 | 2.6 mg/l 6 Mar 2024 |
| Silica, reactive as SiO2 0182 | River water | 6 | Oct 2023 – Mar 2024 | 6.1 mg/l 6 Mar 2024 |
| Sodium 0207 | River water | 6 | Oct 2023 – Mar 2024 | 11 mg/l 6 Mar 2024 |
| Sodium, Dissolved 0205 | River water | 6 | Oct 2023 – Mar 2024 | 10 mg/l 6 Mar 2024 |
| Solids, Suspended at 105 C 0135 | River water | 6 | Oct 2023 – Mar 2024 | 6.7 mg/l 6 Mar 2024 |
| Strontium 6063 | River water | 6 | Oct 2023 – Mar 2024 | 87 µg/l 6 Mar 2024 |
| Strontium, Filtered 6693 | River water | 6 | Oct 2023 – Mar 2024 | 84 µg/l 6 Mar 2024 |
| Sulphate as SO4 0183 | River water | 6 | Oct 2023 – Mar 2024 | 14 mg/l 6 Mar 2024 |
| Sulphate, Dissolved as SO4 7859 | River water | 6 | Oct 2023 – Mar 2024 | 14 mg/l 6 Mar 2024 |
| Zinc 6455 | River water | 6 | Oct 2023 – Mar 2024 | 23 µg/l 6 Mar 2024 |
| Zinc : BLM Bioavailable 4822 | River water | 6 | Oct 2023 – Mar 2024 | 6.4 µg/l 6 Mar 2024 |
| Zinc, Dissolved 3408 | River water | 6 | Oct 2023 – Mar 2024 | 18 µg/l 6 Mar 2024 |
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.