Swale at Catterick
EA name: SWALE AT CATTERICK
Environment Agency sampling point NE-49900178 · 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
- 14 Aug 2026, 09:1148 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 46 since 16 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 422670, 499334As published, to the nearest 1 m. Open in a map
- River, by its own name
- Swale
- River, by the map
- River SwalePlaced on the river its name gives, 22 m from the line.
- Next gauge downstream
- Maunby On the River Swale · 32 km along the river
- Nearest gauge upstream
- Catterick Bridge On the River Swale · 0.1 km along the river
- Why it was sampled
- Monitoring (national agency policy) (42 samples)
Planned investigation (local monitoring) (4 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
99.2%
Sampled 22 Jul 2026, 2 months ago · 44 results banked
Every result (44)
| Sampled | Result as published | Reads as |
|---|---|---|
| 22 Jul 2026, 09:20 | 99.2 | 99.2% |
| 6 May 2026, 10:19 | 108.4 | 108.4% |
| 30 Apr 2026, 11:34 | 118.1 | 118.1% |
| 17 Mar 2026, 14:06 | 99.7 | 99.7% |
| 20 Feb 2026, 08:44 | 100.5 | 100.5% |
| 6 Jan 2026, 09:24 | 102.6 | 102.6% |
| 10 Dec 2025, 14:08 | 102.4 | 102.4% |
| 24 Sep 2025, 08:55 | 100.7 | 100.7% |
| 27 Aug 2025, 08:55 | 83.3 | 83.3% |
| 31 Jul 2025, 08:27 | 93.8 | 93.8% |
| 30 Jun 2025, 08:34 | 92.3 | 92.3% |
| 22 May 2025, 08:32 | 77.2 | 77.2% |
| 16 Apr 2025, 08:42 | 91.7 | 91.7% |
| 31 Mar 2025, 08:32 | 93.5 | 93.5% |
| 3 Mar 2025, 09:37 | 98.9 | 98.9% |
| 13 Feb 2025, 08:21 | 100.2 | 100.2% |
| 5 Feb 2025, 13:36 | 102 | 102% |
| 21 Jan 2025, 16:12 | 99.8 | 99.8% |
| 17 Jan 2025, 16:29 | 100.4 | 100.4% |
| 11 Dec 2024, 14:50 | 100.1 | 100.1% |
| 2 Dec 2024, 09:23 | 99.6 | 99.6% |
| 19 Nov 2024, 13:12 | 107.1 | 107.1% |
| 5 Nov 2024, 09:03 | 95.4 | 95.4% |
| 21 Oct 2024, 07:45 | 101.1 | 101.1% |
| 15 Oct 2024, 13:15 | 104.5 | 104.5% |
| 20 Sep 2024, 08:58 | 91.8 | 91.8% |
| 2 Sep 2024, 08:59 | 85 | 85% |
| 21 Aug 2024, 11:59 | 110.3 | 110.3% |
| 19 Aug 2024, 08:59 | 99.1 | 99.1% |
| 6 Aug 2024, 09:01 | 87.2 | 87.2% |
| 26 Jul 2024, 13:11 | 115.6 | 115.6% |
| 15 Jul 2024, 09:01 | 103.9 | 103.9% |
| 28 Jun 2024, 13:18 | 131.8 | 131.8% |
| 19 Jun 2024, 08:43 | 100.2 | 100.2% |
| 20 May 2024, 08:53 | 95.8 | 95.8% |
| 13 May 2024, 08:15 | 93.7 | 93.7% |
| 22 Apr 2024, 08:50 | 98.7 | 98.7% |
| 10 Apr 2024, 08:50 | 100.3 | 100.3% |
| 4 Apr 2024, 12:01 | 102.9 | 102.9% |
| 18 Mar 2024, 10:02 | 100.8 | 100.8% |
| 19 Feb 2024, 09:27 | 100.2 | 100.2% |
| 16 Jan 2024, 13:20 | 102.8 | 102.8% |
| 4 Dec 2023, 13:22 | 103.7 | 103.7% |
| 16 Oct 2023, 13:49 | 106.9 | 106.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.4 mg/l
Sampled 6 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 May 2026, 10:19 | 12.4 | 12.4 mg/l |
| 30 Apr 2026, 11:34 | 12.9 | 12.9 mg/l |
| 17 Mar 2026, 14:06 | 11.5 | 11.5 mg/l |
| 20 Feb 2026, 08:44 | 12.7 | 12.7 mg/l |
| 6 Jan 2026, 09:24 | 14.9 | 14.9 mg/l |
| 10 Dec 2025, 14:08 | 12.1 | 12.1 mg/l |
| 3 Mar 2025, 09:37 | 12 | 12 mg/l |
| 5 Feb 2025, 13:36 | 12.8 | 12.8 mg/l |
| 21 Jan 2025, 16:12 | 12.6 | 12.6 mg/l |
| 2 Dec 2024, 09:23 | 11.7 | 11.7 mg/l |
| 19 Nov 2024, 13:12 | 13.9 | 13.9 mg/l |
| 15 Oct 2024, 13:15 | 12.1 | 12.1 mg/l |
| 20 Sep 2024, 08:58 | 9.58 | 9.58 mg/l |
| 21 Aug 2024, 11:59 | 11.2 | 11.2 mg/l |
| 26 Jul 2024, 13:11 | 11.1 | 11.1 mg/l |
| 28 Jun 2024, 13:18 | 12.8 | 12.8 mg/l |
| 13 May 2024, 08:15 | 9.83 | 9.83 mg/l |
| 22 Apr 2024, 08:50 | 11.5 | 11.5 mg/l |
| 18 Mar 2024, 10:02 | 11.7 | 11.7 mg/l |
| 19 Feb 2024, 09:27 | 11.8 | 11.8 mg/l |
| 16 Jan 2024, 13:20 | 13.5 | 13.5 mg/l |
| 4 Dec 2023, 13:22 | 13.4 | 13.4 mg/l |
| 16 Oct 2023, 13:49 | 12.8 | 12.8 mg/l |
Water temperature
code 0076 · °C
19.5 °C
Sampled 14 Aug 2026, 48 days ago · 46 results banked
Every result (46)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 09:11 | 19.5 | 19.5 °C |
| 22 Jul 2026, 09:20 | 18.2 | 18.2 °C |
| 6 May 2026, 10:19 | 9.4 | 9.4 °C |
| 30 Apr 2026, 11:34 | 11.2 | 11.2 °C |
| 17 Mar 2026, 14:06 | 8.9 | 8.9 °C |
| 20 Feb 2026, 08:44 | 5.4 | 5.4 °C |
| 6 Jan 2026, 09:24 | 0.1 | 0.1 °C |
| 10 Dec 2025, 14:08 | 8.1 | 8.1 °C |
| 24 Sep 2025, 08:55 | 9.7 | 9.7 °C |
| 27 Aug 2025, 08:55 | 16 | 16 °C |
| 31 Jul 2025, 08:27 | 16.5 | 16.5 °C |
| 30 Jun 2025, 08:34 | 17.4 | 17.4 °C |
| 22 May 2025, 08:32 | 13.8 | 13.8 °C |
| 16 Apr 2025, 08:42 | 10.5 | 10.5 °C |
| 31 Mar 2025, 08:32 | 8.6 | 8.6 °C |
| 3 Mar 2025, 09:37 | 6.8 | 6.8 °C |
| 13 Feb 2025, 08:21 | 4.2 | 4.2 °C |
| 5 Feb 2025, 13:36 | 5.7 | 5.7 °C |
| 21 Jan 2025, 16:12 | 5.3 | 5.3 °C |
| 17 Jan 2025, 16:29 | 5.2 | 5.2 °C |
| 11 Dec 2024, 14:50 | 6.7 | 6.7 °C |
| 2 Dec 2024, 09:23 | 8.3 | 8.3 °C |
| 19 Nov 2024, 13:12 | 4.3 | 4.3 °C |
| 5 Nov 2024, 09:03 | 10 | 10 °C |
| 21 Oct 2024, 07:45 | 10.1 | 10.1 °C |
| 15 Oct 2024, 13:15 | 8.7 | 8.7 °C |
| 20 Sep 2024, 08:58 | 13.3 | 13.3 °C |
| 2 Sep 2024, 08:59 | 15 | 15 °C |
| 21 Aug 2024, 11:59 | 14.6 | 14.6 °C |
| 19 Aug 2024, 08:59 | 14.7 | 14.7 °C |
| 6 Aug 2024, 09:01 | 17.5 | 17.5 °C |
| 26 Jul 2024, 13:11 | 17.4 | 17.4 °C |
| 15 Jul 2024, 09:01 | 13.4 | 13.4 °C |
| 28 Jun 2024, 13:18 | 16.6 | 16.6 °C |
| 19 Jun 2024, 08:43 | 12.7 | 12.7 °C |
| 20 May 2024, 08:53 | 14.3 | 14.3 °C |
| 13 May 2024, 08:15 | 13.1 | 13.1 °C |
| 22 Apr 2024, 08:50 | 8.6 | 8.6 °C |
| 10 Apr 2024, 08:50 | 6.7 | 6.7 °C |
| 4 Apr 2024, 12:01 | 7.8 | 7.8 °C |
| 18 Mar 2024, 10:02 | 8.6 | 8.6 °C |
| 19 Feb 2024, 09:27 | 8 | 8 °C |
| 16 Jan 2024, 13:20 | 4 | 4 °C |
| 4 Dec 2023, 13:22 | 4.4 | 4.4 °C |
| 6 Nov 2023, 13:04 | 8.4 | 8.4 °C |
| 16 Oct 2023, 13:49 | 7.6 | 7.6 °C |
pH
code 0061
8.1
Sampled 14 Aug 2026, 48 days ago · 46 results banked
Every result (46)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 09:11 | 8.1 | 8.1 |
| 22 Jul 2026, 09:20 | 8.4 | 8.4 |
| 6 May 2026, 10:19 | 8.48 | 8.48 |
| 30 Apr 2026, 11:34 | 8.79 | 8.79 |
| 17 Mar 2026, 14:06 | 8.11 | 8.11 |
| 20 Feb 2026, 08:44 | 8.24 | 8.24 |
| 6 Jan 2026, 09:24 | 8.2 | 8.2 |
| 10 Dec 2025, 14:08 | 7.82 | 7.82 |
| 24 Sep 2025, 08:55 | 8.1 | 8.1 |
| 27 Aug 2025, 08:55 | 8.2 | 8.2 |
| 31 Jul 2025, 08:27 | 8.2 | 8.2 |
| 30 Jun 2025, 08:34 | 7.9 | 7.9 |
| 22 May 2025, 08:32 | 8 | 8 |
| 16 Apr 2025, 08:42 | 8.2 | 8.2 |
| 31 Mar 2025, 08:32 | 8.1 | 8.1 |
| 3 Mar 2025, 09:37 | 8.47 | 8.47 |
| 13 Feb 2025, 08:21 | 7.9 | 7.9 |
| 5 Feb 2025, 13:36 | 8.3 | 8.3 |
| 21 Jan 2025, 16:12 | 8.35 | 8.35 |
| 17 Jan 2025, 16:29 | 8.2 | 8.2 |
| 11 Dec 2024, 14:50 | 8.1 | 8.1 |
| 2 Dec 2024, 09:23 | 8.53 | 8.53 |
| 19 Nov 2024, 13:12 | 8.42 | 8.42 |
| 5 Nov 2024, 09:03 | 8.2 | 8.2 |
| 21 Oct 2024, 07:45 | 8 | 8 |
| 15 Oct 2024, 13:15 | 8.23 | 8.23 |
| 20 Sep 2024, 08:58 | 8.43 | 8.43 |
| 2 Sep 2024, 08:59 | 7.88 | 7.88 |
| 21 Aug 2024, 11:59 | 8.51 | 8.51 |
| 19 Aug 2024, 08:59 | 8.15 | 8.15 |
| 6 Aug 2024, 09:01 | 8.05 | 8.05 |
| 26 Jul 2024, 13:11 | 8.64 | 8.64 |
| 15 Jul 2024, 09:01 | 8.19 | 8.19 |
| 28 Jun 2024, 13:18 | 9.11 | 9.11 |
| 19 Jun 2024, 08:43 | 8.11 | 8.11 |
| 20 May 2024, 08:53 | 8.22 | 8.22 |
| 13 May 2024, 08:15 | 8.07 | 8.07 |
| 22 Apr 2024, 08:50 | 8.34 | 8.34 |
| 10 Apr 2024, 08:50 | 7.77 | 7.77 |
| 4 Apr 2024, 12:01 | 7.95 | 7.95 |
| 18 Mar 2024, 10:02 | 8.1 | 8.1 |
| 19 Feb 2024, 09:27 | 8.1 | 8.1 |
| 16 Jan 2024, 13:20 | 8.2 | 8.2 |
| 4 Dec 2023, 13:22 | 8.2 | 8.2 |
| 6 Nov 2023, 13:04 | 8.2 | 8.2 |
| 16 Oct 2023, 13:49 | 8.2 | 8.2 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.042 mg/l
Sampled 14 Aug 2026, 48 days ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 09:11 | 0.042 | 0.042 mg/l |
| 22 Jul 2026, 09:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 May 2026, 10:19 | 0.039 | 0.039 mg/l |
| 30 Apr 2026, 11:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Mar 2026, 14:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Feb 2026, 08:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Jan 2026, 09:24 | 0.053 | 0.053 mg/l |
| 10 Dec 2025, 14:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Mar 2025, 09:37 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Jan 2025, 16:12 | 0.082 | 0.082 mg/l |
| 2 Dec 2024, 09:23 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Nov 2024, 13:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Oct 2024, 13:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Sep 2024, 08:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Aug 2024, 11:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Jul 2024, 13:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Jun 2024, 13:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2024, 08:15 | 0.059 | 0.059 mg/l |
| 22 Apr 2024, 08:50 | 0.032 | 0.032 mg/l |
| 18 Mar 2024, 10:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Feb 2024, 09:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jan 2024, 13:20 | 0.04 | 0.04 mg/l |
| 4 Dec 2023, 13:22 | 0.3 | 0.3 mg/l |
| 6 Nov 2023, 13:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Oct 2023, 13:49 | 0.036 | 0.036 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.19 mg/l
Sampled 6 May 2026, 5 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 May 2026, 10:19 | 1.19 | 1.19 mg/l |
| 30 Apr 2026, 11:34 | 1.29 | 1.29 mg/l |
| 17 Mar 2026, 14:06 | 0.746 | 0.746 mg/l |
| 20 Feb 2026, 08:44 | 1.9 | 1.9 mg/l |
| 6 Jan 2026, 09:24 | 1.79 | 1.79 mg/l |
| 10 Dec 2025, 14:08 | 0.996 | 0.996 mg/l |
| 3 Mar 2025, 09:37 | 1.49 | 1.49 mg/l |
| 21 Jan 2025, 16:12 | 1.99 | 1.99 mg/l |
| 2 Dec 2024, 09:23 | 0.586 | 0.586 mg/l |
| 19 Nov 2024, 13:12 | 1.69 | 1.69 mg/l |
| 15 Oct 2024, 13:15 | 1.4 | 1.4 mg/l |
| 20 Sep 2024, 08:58 | 1.29 | 1.29 mg/l |
| 21 Aug 2024, 11:59 | 0.986 | 0.986 mg/l |
| 26 Jul 2024, 13:11 | 1.48 | 1.48 mg/l |
| 28 Jun 2024, 13:18 | 1.69 | 1.69 mg/l |
| 13 May 2024, 08:15 | 6.44 | 6.44 mg/l |
| 22 Apr 2024, 08:50 | 1.49 | 1.49 mg/l |
| 18 Mar 2024, 10:02 | 0.906 | 0.906 mg/l |
| 19 Feb 2024, 09:27 | 1.3 | 1.3 mg/l |
| 16 Jan 2024, 13:20 | 2.19 | 2.19 mg/l |
| 4 Dec 2023, 13:22 | 1.69 | 1.69 mg/l |
| 16 Oct 2023, 13:49 | 1.1 | 1.1 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.35 mg/l
Sampled 14 Aug 2026, 48 days ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 09:11 | 0.35 | 0.35 mg/l |
| 22 Jul 2026, 09:20 | 0.18 | 0.18 mg/l |
| 6 May 2026, 10:19 | 0.067 | 0.067 mg/l |
| 30 Apr 2026, 11:34 | 0.067 | 0.067 mg/l |
| 17 Mar 2026, 14:06 | 0.018 | 0.018 mg/l |
| 20 Feb 2026, 08:44 | 0.023 | 0.023 mg/l |
| 6 Jan 2026, 09:24 | 0.041 | 0.041 mg/l |
| 10 Dec 2025, 14:08 | 0.023 | 0.023 mg/l |
| 3 Mar 2025, 09:37 | 0.022 | 0.022 mg/l |
| 21 Jan 2025, 16:12 | 0.042 | 0.042 mg/l |
| 2 Dec 2024, 09:23 | 0.015 | 0.015 mg/l |
| 19 Nov 2024, 13:12 | 0.056 | 0.056 mg/l |
| 15 Oct 2024, 13:15 | 0.047 | 0.047 mg/l |
| 20 Sep 2024, 08:58 | 0.083 | 0.083 mg/l |
| 21 Aug 2024, 11:59 | 0.045 | 0.045 mg/l |
| 26 Jul 2024, 13:11 | 0.073 | 0.073 mg/l |
| 28 Jun 2024, 13:18 | 0.058 | 0.058 mg/l |
| 13 May 2024, 08:15 | 0.058 | 0.058 mg/l |
| 22 Apr 2024, 08:50 | 0.016 | 0.016 mg/l |
| 18 Mar 2024, 10:02 | 0.014 | 0.014 mg/l |
| 19 Feb 2024, 09:27 | 0.018 | 0.018 mg/l |
| 16 Jan 2024, 13:20 | 0.037 | 0.037 mg/l |
| 4 Dec 2023, 13:22 | 0.096 | 0.096 mg/l |
| 6 Nov 2023, 13:04 | 0.017 | 0.017 mg/l |
| 16 Oct 2023, 13:49 | 0.037 | 0.037 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
439 µS/cm
Sampled 14 Aug 2026, 48 days ago · 46 results banked
Every result (46)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Aug 2026, 09:11 | 439 | 439 µS/cm |
| 22 Jul 2026, 09:20 | 398 | 398 µS/cm |
| 6 May 2026, 10:19 | 312 | 312 µS/cm |
| 30 Apr 2026, 11:34 | 362 | 362 µS/cm |
| 17 Mar 2026, 14:06 | 168 | 168 µS/cm |
| 20 Feb 2026, 08:44 | 387 | 387 µS/cm |
| 6 Jan 2026, 09:24 | 384 | 384 µS/cm |
| 10 Dec 2025, 14:08 | 185 | 185 µS/cm |
| 24 Sep 2025, 08:55 | 231 | 231 µS/cm |
| 27 Aug 2025, 08:55 | 412 | 412 µS/cm |
| 31 Jul 2025, 08:27 | 352 | 352 µS/cm |
| 30 Jun 2025, 08:34 | 142 | 142 µS/cm |
| 22 May 2025, 08:32 | 446 | 446 µS/cm |
| 16 Apr 2025, 08:42 | 415 | 415 µS/cm |
| 31 Mar 2025, 08:32 | 293 | 293 µS/cm |
| 3 Mar 2025, 09:37 | 328 | 328 µS/cm |
| 13 Feb 2025, 08:21 | 218 | 218 µS/cm |
| 5 Feb 2025, 13:36 | 234 | 234 µS/cm |
| 21 Jan 2025, 16:12 | 355 | 355 µS/cm |
| 17 Jan 2025, 16:29 | 268 | 268 µS/cm |
| 11 Dec 2024, 14:50 | 266 | 266 µS/cm |
| 2 Dec 2024, 09:23 | 171 | 171 µS/cm |
| 19 Nov 2024, 13:12 | 340 | 340 µS/cm |
| 5 Nov 2024, 09:03 | 333 | 333 µS/cm |
| 21 Oct 2024, 07:45 | 149 | 149 µS/cm |
| 15 Oct 2024, 13:15 | 303 | 303 µS/cm |
| 20 Sep 2024, 08:58 | 205 | 205 µS/cm |
| 2 Sep 2024, 08:59 | 298 | 298 µS/cm |
| 21 Aug 2024, 11:59 | 320 | 320 µS/cm |
| 19 Aug 2024, 08:59 | 311 | 311 µS/cm |
| 6 Aug 2024, 09:01 | 405 | 405 µS/cm |
| 26 Jul 2024, 13:11 | 355 | 355 µS/cm |
| 15 Jul 2024, 09:01 | 281 | 281 µS/cm |
| 28 Jun 2024, 13:18 | 395 | 395 µS/cm |
| 19 Jun 2024, 08:43 | 254.4 | 254.4 µS/cm |
| 20 May 2024, 08:53 | 347.9 | 347.9 µS/cm |
| 13 May 2024, 08:15 | 679 | 679 µS/cm |
| 22 Apr 2024, 08:50 | 330 | 330 µS/cm |
| 10 Apr 2024, 08:50 | 159.5 | 159.5 µS/cm |
| 4 Apr 2024, 12:01 | 148 | 148 µS/cm |
| 18 Mar 2024, 10:02 | 216 | 216 µS/cm |
| 19 Feb 2024, 09:27 | 256 | 256 µS/cm |
| 16 Jan 2024, 13:20 | 365 | 365 µS/cm |
| 4 Dec 2023, 13:22 | 448 | 448 µS/cm |
| 6 Nov 2023, 13:04 | 277 | 277 µS/cm |
| 16 Oct 2023, 13:49 | 271 | 271 µS/cm |
Everything measured here
107 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 107 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 44 | Oct 2023 – Jul 2026 | 99.2% 22 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Oct 2023 – May 2026 | 12.4 mg/l 6 May 2026 |
| Temperature of Water 0076 | River water | 46 | Oct 2023 – Aug 2026 | 19.5 °C 14 Aug 2026 |
| pH 0061 | River water | 46 | Oct 2023 – Aug 2026 | 8.1 14 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 25 | Oct 2023 – Aug 2026 | 0.042 mg/l 14 Aug 2026 |
| Nitrate as N 0117 | River water | 22 | Oct 2023 – May 2026 | 1.19 mg/l 6 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 25 | Oct 2023 – Aug 2026 | 0.35 mg/l 14 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 46 | Oct 2023 – Aug 2026 | 439 µS/cm 14 Aug 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 20 Sep 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 3 | May 2024 – Sep 2024 | below 0.004 µg/l 20 Sep 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 3 | May 2024 – Sep 2024 | below 0.005 µg/l 20 Sep 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 3 | May 2024 – Sep 2024 | 0.0011 µg/l 20 Sep 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 25 | Oct 2023 – Aug 2026 | 170 mg/l 14 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Oct 2023 – May 2026 | 0.00068 mg/l 6 May 2026 |
| Barium 6062 | River water | 8 | Oct 2023 – Aug 2026 | 300 µg/l 14 Aug 2026 |
| Barium, Dissolved 9446 | River water | 27 | Oct 2023 – Aug 2026 | 280 µg/l 14 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 19 | Feb 2024 – May 2026 | 2 mg/l 6 May 2026 |
| Boron 6059 | River water | 8 | Oct 2023 – Aug 2026 | below 100 µg/l 14 Aug 2026 |
| Boron, Dissolved 9447 | River water | 28 | Oct 2023 – Aug 2026 | below 100 µg/l 14 Aug 2026 |
| Cadmium 0108 | River water | 28 | Oct 2023 – Aug 2026 | 0.085 µg/l 14 Aug 2026 |
| Cadmium, Dissolved 0106 | River water | 28 | Oct 2023 – Aug 2026 | 0.052 µg/l 14 Aug 2026 |
| Calcium 0241 | River water | 9 | Oct 2023 – Aug 2026 | 58 mg/l 14 Aug 2026 |
| Calcium, Dissolved 0239 | River water | 27 | Oct 2023 – Aug 2026 | 57 mg/l 14 Aug 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 28 | Oct 2023 – Aug 2026 | 4.9 mg/l 14 Aug 2026 |
| Chloride 0172 | River water | 8 | Oct 2023 – Aug 2026 | 16 mg/l 14 Aug 2026 |
| Chromium 3164 | River water | 8 | Oct 2023 – Aug 2026 | below 0.5 µg/l 14 Aug 2026 |
| Chromium, Dissolved 3409 | River water | 8 | Oct 2023 – Aug 2026 | below 0.5 µg/l 14 Aug 2026 |
| Copper 6452 | River water | 28 | Oct 2023 – Aug 2026 | 2.6 µg/l 14 Aug 2026 |
| Copper : BLM Bioavailable 4821 | River water | 8 | Oct 2023 – Aug 2026 | 0.1 µg/l 14 Aug 2026 |
| Copper, Dissolved 6450 | River water | 28 | Oct 2023 – Aug 2026 | 1.4 µg/l 14 Aug 2026 |
| Hardness, Total as CaCO3 0158 | River water | 28 | Oct 2023 – Aug 2026 | 179 mg/l 14 Aug 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| Ionic Balance 7044 | River water | 8 | Oct 2023 – Aug 2026 | 0.969% 14 Aug 2026 |
| Iron 6051 | River water | 9 | Oct 2023 – Aug 2026 | 70 µg/l 14 Aug 2026 |
| Iron, Dissolved 6460 | River water | 27 | Oct 2023 – Aug 2026 | below 30 µg/l 14 Aug 2026 |
| Lead 0050 | River water | 28 | Oct 2023 – Aug 2026 | 3.9 µg/l 14 Aug 2026 |
| Lead : BLM Bioavailable 3377 | River water | 8 | Oct 2023 – Aug 2026 | 0.1 µg/l 14 Aug 2026 |
| Lead, Dissolved 0052 | River water | 28 | Oct 2023 – Aug 2026 | 0.49 µg/l 14 Aug 2026 |
| Lithium 6064 | River water | 8 | Oct 2023 – Aug 2026 | below 100 µg/l 14 Aug 2026 |
| Lithium, Dissolved 4201 | River water | 28 | Oct 2023 – Aug 2026 | below 100 µg/l 14 Aug 2026 |
| Magnesium 0237 | River water | 9 | Oct 2023 – Aug 2026 | 9.2 mg/l 14 Aug 2026 |
| Magnesium, Dissolved 0235 | River water | 27 | Oct 2023 – Aug 2026 | 9 mg/l 14 Aug 2026 |
| Manganese 6050 | River water | 8 | Oct 2023 – Aug 2026 | 13 µg/l 14 Aug 2026 |
| Manganese : BLM Bioavailable 4820 | River water | 8 | Oct 2023 – Aug 2026 | 5 µg/l 14 Aug 2026 |
| Manganese, Dissolved 6458 | River water | 28 | Oct 2023 – Aug 2026 | below 10 µg/l 14 Aug 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 20 Sep 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 20 Sep 2024 |
| National Grid Reference : Whole : Field report 7434 | River water | 4 | Apr 2024 – Dec 2024 | 1 unitless value 11 Dec 2024 |
| Nickel 6462 | River water | 28 | Oct 2023 – Aug 2026 | 1.1 µg/l 14 Aug 2026 |
| Nickel : BLM Bioavailable 3878 | River water | 8 | Oct 2023 – Aug 2026 | 0.27 µg/l 14 Aug 2026 |
| Nickel, Dissolved 3410 | River water | 28 | Oct 2023 – Aug 2026 | 0.64 µg/l 14 Aug 2026 |
| Nitrite as N 0118 | River water | 25 | Oct 2023 – Aug 2026 | 0.061 mg/l 14 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 25 | Oct 2023 – Aug 2026 | 1.4 mg/l 14 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| Perfluorobutanoic acid 2995 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 20 Sep 2024 |
| Perfluorodecanoic acid 8892 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 20 Sep 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 3 | May 2024 – Sep 2024 | below 0.005 µg/l 20 Sep 2024 |
| Perfluorododecanoic acid 8894 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 20 Sep 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluoroheptanoic acid 8889 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluorohexanoic acid 8888 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluorononanoic acid 8891 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 20 Sep 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluorooctanoic acid 8890 | River water | 3 | May 2024 – Sep 2024 | 0.00089 µg/l 20 Sep 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 3 | May 2024 – Sep 2024 | below 0.0005 µg/l 20 Sep 2024 |
| Perfluoropentanoic acid 8887 | River water | 3 | May 2024 – Sep 2024 | below 0.001 µg/l 20 Sep 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 3 | May 2024 – Sep 2024 | below 0.006 µg/l 20 Sep 2024 |
| Perfluorotridecanoic acid 2955 | River water | 3 | May 2024 – Sep 2024 | below 0.005 µg/l 20 Sep 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 3 | May 2024 – Sep 2024 | below 0.004 µg/l 20 Sep 2024 |
| Perfluoroundecanoic acid 8893 | River water | 3 | May 2024 – Sep 2024 | below 0.002 µg/l 20 Sep 2024 |
| pH : In Situ 3169 | River water | 9 | Jan 2025 – Jul 2026 | 8.29 22 Jul 2026 |
| Potassium 0211 | River water | 8 | Oct 2023 – Aug 2026 | 3.2 mg/l 14 Aug 2026 |
| Potassium, Dissolved 0209 | River water | 27 | Oct 2023 – Aug 2026 | 2.7 mg/l 14 Aug 2026 |
| Silica, reactive as SiO2 0182 | River water | 8 | Oct 2023 – Aug 2026 | 0.66 mg/l 14 Aug 2026 |
| Sodium 0207 | River water | 8 | Oct 2023 – Aug 2026 | 18 mg/l 14 Aug 2026 |
| Sodium, Dissolved 0205 | River water | 27 | Oct 2023 – Aug 2026 | 16 mg/l 14 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 28 | Oct 2023 – Aug 2026 | 7.1 mg/l 14 Aug 2026 |
| Strontium 6063 | River water | 8 | Oct 2023 – Aug 2026 | 320 µg/l 14 Aug 2026 |
| Strontium, Filtered 6693 | River water | 27 | Oct 2023 – Aug 2026 | 320 µg/l 14 Aug 2026 |
| Sulphate as SO4 0183 | River water | 8 | Oct 2023 – Aug 2026 | 23 mg/l 14 Aug 2026 |
| Sulphate, Dissolved as SO4 7859 | River water | 27 | Oct 2023 – Aug 2026 | 23 mg/l 14 Aug 2026 |
| Zinc 6455 | River water | 28 | Oct 2023 – Aug 2026 | 16 µg/l 14 Aug 2026 |
| Zinc : BLM Bioavailable 4822 | River water | 8 | Oct 2023 – Aug 2026 | 2.7 µg/l 14 Aug 2026 |
| Zinc, Dissolved 3408 | River water | 28 | Oct 2023 – Aug 2026 | 7.1 µg/l 14 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.