Medway at Colliers/Chafford gauging station
EA name: MEDWAY AT COLLIERS/CHAFFORD GS
Environment Agency sampling point SO-E0007260 · 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
- 15 Sep 2026, 08:4616 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 36 since 18 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 552219, 141278As published, to the nearest 1 m. Open in a map
- River, by its own name
- Medway
- River, by the map
- River MedwayPlaced on the river its name gives, 1 m from the line.
- Next gauge downstream
- Leigh Flood Storage Area On the River Medway · 10 km along the riverLeigh Barrier 10 km along the riverBeside COLLIERS LAND BRIDGE RL, Colliers Land Bridge: too close to say above or below.
- Nearest gauge upstream
- Chafford On the River Medway · 1.1 km along the river
- Why it was sampled
- Monitoring (national agency policy) (36 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
93.1%
Sampled 15 Sep 2026, 16 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 08:46 | 93.1 | 93.1% |
| 1 Sep 2026, 11:57 | 94.5 | 94.5% |
| 27 Aug 2026, 09:08 | 91.8 | 91.8% |
| 14 Aug 2026, 12:33 | 100.1 | 100.1% |
| 21 Jul 2026, 08:43 | 94.1 | 94.1% |
| 9 Jul 2026, 09:12 | 91.7 | 91.7% |
| 19 Jun 2026, 07:55 | 94.3 | 94.3% |
| 2 Jun 2026, 08:36 | 92.9 | 92.9% |
| 20 May 2026, 08:06 | 96.2 | 96.2% |
| 6 May 2026, 10:59 | 98.1 | 98.1% |
| 15 Apr 2026, 11:41 | 102.8 | 102.8% |
| 10 Apr 2026, 13:20 | 105.8 | 105.8% |
| 20 Jan 2026, 15:59 | 99.7 | 99.7% |
| 6 Jan 2026, 12:03 | 99.5 | 99.5% |
| 16 Dec 2025, 10:59 | 100.2 | 100.2% |
| 10 Dec 2025, 09:27 | 100.9 | 100.9% |
| 17 Nov 2025, 14:40 | 98.3 | 98.3% |
| 5 Nov 2025, 14:10 | 101.3 | 101.3% |
| 4 Mar 2025, 11:28 | 99.6 | 99.6% |
| 4 Feb 2025, 08:41 | 100.4 | 100.4% |
| 21 Jan 2025, 14:50 | 99.4 | 99.4% |
| 4 Dec 2024, 13:06 | 101.3 | 101.3% |
| 18 Nov 2024, 10:10 | 99.1 | 99.1% |
| 14 Oct 2024, 13:21 | 98.9 | 98.9% |
| 17 Sep 2024, 14:16 | 100.5 | 100.5% |
| 29 Aug 2024, 10:01 | 95.5 | 95.5% |
| 15 Jul 2024, 13:36 | 100 | 100% |
| 24 Jun 2024, 10:14 | 97.8 | 97.8% |
| 16 May 2024, 14:46 | 100.6 | 100.6% |
| 17 Apr 2024, 13:33 | 102.7 | 102.7% |
| 18 Mar 2024, 10:33 | 101.4 | 101.4% |
| 21 Feb 2024, 09:06 | 101.7 | 101.7% |
| 15 Jan 2024, 14:25 | 99.8 | 99.8% |
| 5 Dec 2023, 08:38 | 93.8 | 93.8% |
| 20 Nov 2023, 13:18 | 100.8 | 100.8% |
| 18 Oct 2023, 08:48 | 94.6 | 94.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.85 mg/l
Sampled 15 Sep 2026, 16 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 08:46 | 8.85 | 8.85 mg/l |
| 1 Sep 2026, 11:57 | 9 | 9 mg/l |
| 27 Aug 2026, 09:08 | 8.74 | 8.74 mg/l |
| 14 Aug 2026, 12:33 | 8.96 | 8.96 mg/l |
| 21 Jul 2026, 08:43 | 8.92 | 8.92 mg/l |
| 9 Jul 2026, 09:12 | 8.16 | 8.16 mg/l |
| 19 Jun 2026, 07:55 | 8.85 | 8.85 mg/l |
| 2 Jun 2026, 08:36 | 8.86 | 8.86 mg/l |
| 20 May 2026, 08:06 | 10.2 | 10.2 mg/l |
| 6 May 2026, 10:59 | 10.1 | 10.1 mg/l |
| 15 Apr 2026, 11:41 | 11.2 | 11.2 mg/l |
| 10 Apr 2026, 13:20 | 11.3 | 11.3 mg/l |
| 20 Jan 2026, 15:59 | 11.7 | 11.7 mg/l |
| 6 Jan 2026, 12:03 | 13.9 | 13.9 mg/l |
| 16 Dec 2025, 10:59 | 11.4 | 11.4 mg/l |
| 10 Dec 2025, 09:27 | 11.3 | 11.3 mg/l |
| 17 Nov 2025, 14:40 | 11.1 | 11.1 mg/l |
| 5 Nov 2025, 14:10 | 10.7 | 10.7 mg/l |
| 4 Mar 2025, 11:28 | 12.6 | 12.6 mg/l |
| 4 Feb 2025, 08:41 | 12.4 | 12.4 mg/l |
| 21 Jan 2025, 14:50 | 12.6 | 12.6 mg/l |
| 4 Dec 2024, 13:06 | 12.1 | 12.1 mg/l |
| 18 Nov 2024, 10:10 | 11.4 | 11.4 mg/l |
| 14 Oct 2024, 13:21 | 10.9 | 10.9 mg/l |
| 17 Sep 2024, 14:16 | 10.4 | 10.4 mg/l |
| 29 Aug 2024, 10:01 | 9.28 | 9.28 mg/l |
| 15 Jul 2024, 13:36 | 9.76 | 9.76 mg/l |
| 24 Jun 2024, 10:14 | 9.53 | 9.53 mg/l |
| 16 May 2024, 14:46 | 10.2 | 10.2 mg/l |
| 17 Apr 2024, 13:33 | 11.4 | 11.4 mg/l |
| 18 Mar 2024, 10:33 | 11.3 | 11.3 mg/l |
| 21 Feb 2024, 09:06 | 11.7 | 11.7 mg/l |
| 15 Jan 2024, 14:25 | 12.7 | 12.7 mg/l |
| 5 Dec 2023, 08:38 | 11.4 | 11.4 mg/l |
| 20 Nov 2023, 13:18 | 11.2 | 11.2 mg/l |
| 18 Oct 2023, 08:48 | 10.6 | 10.6 mg/l |
Water temperature
code 0076 · °C
17.7 °C
Sampled 15 Sep 2026, 16 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 08:46 | 17.7 | 17.7 °C |
| 1 Sep 2026, 11:57 | 17.6 | 17.6 °C |
| 27 Aug 2026, 09:08 | 17.6 | 17.6 °C |
| 14 Aug 2026, 12:33 | 20.7 | 20.7 °C |
| 21 Jul 2026, 08:43 | 17.8 | 17.8 °C |
| 9 Jul 2026, 09:12 | 21 | 21 °C |
| 19 Jun 2026, 07:55 | 18.3 | 18.3 °C |
| 2 Jun 2026, 08:36 | 17.5 | 17.5 °C |
| 20 May 2026, 08:06 | 12.7 | 12.7 °C |
| 6 May 2026, 10:59 | 13.8 | 13.8 °C |
| 15 Apr 2026, 11:41 | 11.6 | 11.6 °C |
| 10 Apr 2026, 13:20 | 12.4 | 12.4 °C |
| 20 Jan 2026, 15:59 | 8.2 | 8.2 °C |
| 6 Jan 2026, 12:03 | 1.6 | 1.6 °C |
| 16 Dec 2025, 10:59 | 9.5 | 9.5 °C |
| 10 Dec 2025, 09:27 | 10.3 | 10.3 °C |
| 17 Nov 2025, 14:40 | 9.9 | 9.9 °C |
| 5 Nov 2025, 14:10 | 12.8 | 12.8 °C |
| 4 Mar 2025, 11:28 | 5.4 | 5.4 °C |
| 4 Feb 2025, 08:41 | 6.2 | 6.2 °C |
| 21 Jan 2025, 14:50 | 5.1 | 5.1 °C |
| 4 Dec 2024, 13:06 | 7.6 | 7.6 °C |
| 18 Nov 2024, 10:10 | 9.2 | 9.2 °C |
| 14 Oct 2024, 13:21 | 10.9 | 10.9 °C |
| 17 Sep 2024, 14:16 | 13.9 | 13.9 °C |
| 29 Aug 2024, 10:01 | 16.6 | 16.6 °C |
| 15 Jul 2024, 13:36 | 16.4 | 16.4 °C |
| 24 Jun 2024, 10:14 | 16.5 | 16.5 °C |
| 16 May 2024, 14:46 | 14.5 | 14.5 °C |
| 17 Apr 2024, 13:33 | 10.6 | 10.6 °C |
| 18 Mar 2024, 10:33 | 10.4 | 10.4 °C |
| 21 Feb 2024, 09:06 | 9.2 | 9.2 °C |
| 15 Jan 2024, 14:25 | 5 | 5 °C |
| 5 Dec 2023, 08:38 | 7 | 7 °C |
| 20 Nov 2023, 13:18 | 10.5 | 10.5 °C |
| 18 Oct 2023, 08:48 | 10.3 | 10.3 °C |
pH
code 0061
7.61
Sampled 15 Sep 2026, 16 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 08:46 | 7.61 | 7.61 |
| 1 Sep 2026, 11:57 | 7.62 | 7.62 |
| 27 Aug 2026, 09:08 | 7.82 | 7.82 |
| 14 Aug 2026, 12:33 | 7.59 | 7.59 |
| 21 Jul 2026, 08:43 | 7.71 | 7.71 |
| 9 Jul 2026, 09:12 | 7.6 | 7.6 |
| 19 Jun 2026, 07:55 | 7.63 | 7.63 |
| 2 Jun 2026, 08:36 | 7.54 | 7.54 |
| 20 May 2026, 08:06 | 7.56 | 7.56 |
| 6 May 2026, 10:59 | 7.72 | 7.72 |
| 15 Apr 2026, 11:41 | 7.77 | 7.77 |
| 10 Apr 2026, 13:20 | 7.88 | 7.88 |
| 20 Jan 2026, 15:59 | 7.45 | 7.45 |
| 6 Jan 2026, 12:03 | 7.59 | 7.59 |
| 16 Dec 2025, 10:59 | 7.53 | 7.53 |
| 10 Dec 2025, 09:27 | 7.23 | 7.23 |
| 17 Nov 2025, 14:40 | 7.64 | 7.64 |
| 5 Nov 2025, 14:10 | 7.94 | 7.94 |
| 4 Mar 2025, 11:28 | 7.71 | 7.71 |
| 4 Feb 2025, 08:41 | 7.39 | 7.39 |
| 21 Jan 2025, 14:50 | 7.55 | 7.55 |
| 4 Dec 2024, 13:06 | 7.41 | 7.41 |
| 18 Nov 2024, 10:10 | 7.48 | 7.48 |
| 14 Oct 2024, 13:21 | 7.48 | 7.48 |
| 17 Sep 2024, 14:16 | 7.59 | 7.59 |
| 29 Aug 2024, 10:01 | 7.48 | 7.48 |
| 15 Jul 2024, 13:36 | 7.84 | 7.84 |
| 24 Jun 2024, 10:14 | 7.79 | 7.79 |
| 16 May 2024, 14:46 | 7.6 | 7.6 |
| 17 Apr 2024, 13:33 | 7.54 | 7.54 |
| 18 Mar 2024, 10:33 | 7.43 | 7.43 |
| 21 Feb 2024, 09:06 | 7.47 | 7.47 |
| 15 Jan 2024, 14:25 | 7.53 | 7.53 |
| 5 Dec 2023, 08:38 | 7.21 | 7.21 |
| 20 Nov 2023, 13:18 | 7.32 | 7.32 |
| 18 Oct 2023, 08:48 | 7.67 | 7.67 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 15 Sep 2026, 16 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 08:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Sep 2026, 11:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Aug 2026, 09:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Aug 2026, 12:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Jul 2026, 08:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Jul 2026, 09:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jun 2026, 07:55 | 0.037 | 0.037 mg/l |
| 2 Jun 2026, 08:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 May 2026, 08:06 | 0.27 | 0.27 mg/l |
| 6 May 2026, 10:59 | 0.033 | 0.033 mg/l |
| 15 Apr 2026, 11:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Apr 2026, 13:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jan 2026, 15:59 | 0.034 | 0.034 mg/l |
| 6 Jan 2026, 12:03 | 0.064 | 0.064 mg/l |
| 16 Dec 2025, 10:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Dec 2025, 09:27 | 0.037 | 0.037 mg/l |
| 17 Nov 2025, 14:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Nov 2025, 14:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Mar 2025, 11:28 | 0.24 | 0.24 mg/l |
| 4 Feb 2025, 08:41 | 0.35 | 0.35 mg/l |
| 21 Jan 2025, 14:50 | 0.091 | 0.091 mg/l |
| 4 Dec 2024, 13:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Nov 2024, 10:10 | 0.033 | 0.033 mg/l |
| 14 Oct 2024, 13:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Sep 2024, 14:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 Aug 2024, 10:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2024, 13:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Jun 2024, 10:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 May 2024, 14:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Apr 2024, 13:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Mar 2024, 10:33 | 0.045 | 0.045 mg/l |
| 21 Feb 2024, 09:06 | 0.044 | 0.044 mg/l |
| 15 Jan 2024, 14:25 | 0.058 | 0.058 mg/l |
| 5 Dec 2023, 08:38 | 0.06 | 0.06 mg/l |
| 20 Nov 2023, 13:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Oct 2023, 08:48 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
6.09 mg/l
Sampled 15 Sep 2026, 16 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 08:46 | 6.09 | 6.09 mg/l |
| 1 Sep 2026, 11:57 | 7.59 | 7.59 mg/l |
| 27 Aug 2026, 09:08 | 6.49 | 6.49 mg/l |
| 14 Aug 2026, 12:33 | 7.09 | 7.09 mg/l |
| 21 Jul 2026, 08:43 | 5.99 | 5.99 mg/l |
| 9 Jul 2026, 09:12 | 6.09 | 6.09 mg/l |
| 19 Jun 2026, 07:55 | 5.88 | 5.88 mg/l |
| 2 Jun 2026, 08:36 | 6.38 | 6.38 mg/l |
| 20 May 2026, 08:06 | 5.07 | 5.07 mg/l |
| 6 May 2026, 10:59 | 4.78 | 4.78 mg/l |
| 15 Apr 2026, 11:41 | 4.49 | 4.49 mg/l |
| 10 Apr 2026, 13:20 | 3.99 | 3.99 mg/l |
| 20 Jan 2026, 15:59 | 2.39 | 2.39 mg/l |
| 6 Jan 2026, 12:03 | 4.48 | 4.48 mg/l |
| 16 Dec 2025, 10:59 | 2.69 | 2.69 mg/l |
| 10 Dec 2025, 09:27 | 1.69 | 1.69 mg/l |
| 17 Nov 2025, 14:40 | 2.79 | 2.79 mg/l |
| 5 Nov 2025, 14:10 | 2.79 | 2.79 mg/l |
| 4 Mar 2025, 11:28 | 2.6 | 2.6 mg/l |
| 4 Feb 2025, 08:41 | 2.3 | 2.3 mg/l |
| 21 Jan 2025, 14:50 | 2.56 | 2.56 mg/l |
| 4 Dec 2024, 13:06 | 2.39 | 2.39 mg/l |
| 18 Nov 2024, 10:10 | 4.49 | 4.49 mg/l |
| 14 Oct 2024, 13:21 | 2.29 | 2.29 mg/l |
| 17 Sep 2024, 14:16 | 5.29 | 5.29 mg/l |
| 29 Aug 2024, 10:01 | 5.09 | 5.09 mg/l |
| 15 Jul 2024, 13:36 | 4.39 | 4.39 mg/l |
| 24 Jun 2024, 10:14 | 4.29 | 4.29 mg/l |
| 16 May 2024, 14:46 | 2.99 | 2.99 mg/l |
| 17 Apr 2024, 13:33 | 2.69 | 2.69 mg/l |
| 18 Mar 2024, 10:33 | 1.88 | 1.88 mg/l |
| 21 Feb 2024, 09:06 | 2.29 | 2.29 mg/l |
| 15 Jan 2024, 14:25 | 3.02 | 3.02 mg/l |
| 5 Dec 2023, 08:38 | 1.59 | 1.59 mg/l |
| 20 Nov 2023, 13:18 | 2.09 | 2.09 mg/l |
| 18 Oct 2023, 08:48 | 5.19 | 5.19 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.14 mg/l
Sampled 15 Sep 2026, 16 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 08:46 | 0.14 | 0.14 mg/l |
| 1 Sep 2026, 11:57 | 0.19 | 0.19 mg/l |
| 27 Aug 2026, 09:08 | 0.15 | 0.15 mg/l |
| 21 Jul 2026, 08:43 | 0.11 | 0.11 mg/l |
| 9 Jul 2026, 09:12 | 0.1 | 0.1 mg/l |
| 19 Jun 2026, 07:55 | 0.092 | 0.092 mg/l |
| 2 Jun 2026, 08:36 | 0.097 | 0.097 mg/l |
| 20 May 2026, 08:06 | 0.14 | 0.14 mg/l |
| 6 May 2026, 10:59 | 0.094 | 0.094 mg/l |
| 15 Apr 2026, 11:41 | 0.069 | 0.069 mg/l |
| 10 Apr 2026, 13:20 | 0.062 | 0.062 mg/l |
| 20 Jan 2026, 15:59 | 0.058 | 0.058 mg/l |
| 6 Jan 2026, 12:03 | 0.049 | 0.049 mg/l |
| 16 Dec 2025, 10:59 | 0.064 | 0.064 mg/l |
| 10 Dec 2025, 09:27 | 0.069 | 0.069 mg/l |
| 17 Nov 2025, 14:40 | 0.08 | 0.08 mg/l |
| 5 Nov 2025, 14:10 | 0.093 | 0.093 mg/l |
| 4 Mar 2025, 11:28 | 0.056 | 0.056 mg/l |
| 4 Feb 2025, 08:41 | 0.084 | 0.084 mg/l |
| 21 Jan 2025, 14:50 | 0.08 | 0.08 mg/l |
| 4 Dec 2024, 13:06 | 0.067 | 0.067 mg/l |
| 18 Nov 2024, 10:10 | 0.095 | 0.095 mg/l |
| 14 Oct 2024, 13:21 | 0.11 | 0.11 mg/l |
| 17 Sep 2024, 14:16 | 0.17 | 0.17 mg/l |
| 29 Aug 2024, 10:01 | 0.27 | 0.27 mg/l |
| 15 Jul 2024, 13:36 | 0.3 | 0.3 mg/l |
| 24 Jun 2024, 10:14 | 0.21 | 0.21 mg/l |
| 16 May 2024, 14:46 | 0.15 | 0.15 mg/l |
| 17 Apr 2024, 13:33 | 0.11 | 0.11 mg/l |
| 18 Mar 2024, 10:33 | 0.052 | 0.052 mg/l |
| 21 Feb 2024, 09:06 | 0.085 | 0.085 mg/l |
| 15 Jan 2024, 14:25 | 0.096 | 0.096 mg/l |
| 5 Dec 2023, 08:38 | 0.078 | 0.078 mg/l |
| 20 Nov 2023, 13:18 | 0.09 | 0.09 mg/l |
| 18 Oct 2023, 08:48 | 0.27 | 0.27 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
435 µS/cm
Sampled 15 Sep 2026, 16 days ago · 36 results banked
Every result (36)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Sep 2026, 08:46 | 435 | 435 µS/cm |
| 1 Sep 2026, 11:57 | 476 | 476 µS/cm |
| 27 Aug 2026, 09:08 | 491 | 491 µS/cm |
| 14 Aug 2026, 12:33 | 493 | 493 µS/cm |
| 21 Jul 2026, 08:43 | 455 | 455 µS/cm |
| 9 Jul 2026, 09:12 | 455 | 455 µS/cm |
| 19 Jun 2026, 07:55 | 415 | 415 µS/cm |
| 2 Jun 2026, 08:36 | 418 | 418 µS/cm |
| 20 May 2026, 08:06 | 368 | 368 µS/cm |
| 6 May 2026, 10:59 | 357 | 357 µS/cm |
| 15 Apr 2026, 11:41 | 335 | 335 µS/cm |
| 10 Apr 2026, 13:20 | 315 | 315 µS/cm |
| 20 Jan 2026, 15:59 | 237 | 237 µS/cm |
| 6 Jan 2026, 12:03 | 333 | 333 µS/cm |
| 16 Dec 2025, 10:59 | 272 | 272 µS/cm |
| 10 Dec 2025, 09:27 | 215 | 215 µS/cm |
| 17 Nov 2025, 14:40 | 299 | 299 µS/cm |
| 5 Nov 2025, 14:10 | 300 | 300 µS/cm |
| 4 Mar 2025, 11:28 | 268 | 268 µS/cm |
| 4 Feb 2025, 08:41 | 258 | 258 µS/cm |
| 21 Jan 2025, 14:50 | 262 | 262 µS/cm |
| 4 Dec 2024, 13:06 | 241 | 241 µS/cm |
| 18 Nov 2024, 10:10 | 319 | 319 µS/cm |
| 14 Oct 2024, 13:21 | 246 | 246 µS/cm |
| 17 Sep 2024, 14:16 | 374 | 374 µS/cm |
| 29 Aug 2024, 10:01 | 362 | 362 µS/cm |
| 15 Jul 2024, 13:36 | 348 | 348 µS/cm |
| 24 Jun 2024, 10:14 | 347 | 347 µS/cm |
| 16 May 2024, 14:46 | 270 | 270 µS/cm |
| 17 Apr 2024, 13:33 | 255 | 255 µS/cm |
| 18 Mar 2024, 10:33 | 212 | 212 µS/cm |
| 21 Feb 2024, 09:06 | 228 | 228 µS/cm |
| 15 Jan 2024, 14:25 | 253 | 253 µS/cm |
| 5 Dec 2023, 08:38 | 199 | 199 µS/cm |
| 20 Nov 2023, 13:18 | 232 | 232 µS/cm |
| 18 Oct 2023, 08:48 | 363 | 363 µS/cm |
Everything measured here
60 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 60 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 36 | Oct 2023 – Sep 2026 | 93.1% 15 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 36 | Oct 2023 – Sep 2026 | 8.85 mg/l 15 Sep 2026 |
| Temperature of Water 0076 | River water | 36 | Oct 2023 – Sep 2026 | 17.7 °C 15 Sep 2026 |
| pH 0061 | River water | 36 | Oct 2023 – Sep 2026 | 7.61 15 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 36 | Oct 2023 – Sep 2026 | below 0.03 mg/l 15 Sep 2026 |
| Nitrate as N 0117 | River water | 36 | Oct 2023 – Sep 2026 | 6.09 mg/l 15 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 35 | Oct 2023 – Sep 2026 | 0.14 mg/l 15 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 36 | Oct 2023 – Sep 2026 | 435 µS/cm 15 Sep 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 2 | Nov 2023 – Mar 2024 | below 0.001 µg/l 18 Mar 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 2 | Nov 2023 – Mar 2024 | below 0.001 µg/l 18 Mar 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 2 | Nov 2023 – Mar 2024 | below 0.001 µg/l 18 Mar 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 2 | Nov 2023 – Mar 2024 | below 0.002 µg/l 18 Mar 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 2 | Nov 2023 – Mar 2024 | below 0.001 µg/l 18 Mar 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 2 | Nov 2023 – Mar 2024 | below 0.004 µg/l 18 Mar 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 2 | Nov 2023 – Mar 2024 | below 0.005 µg/l 18 Mar 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 2 | Nov 2023 – Mar 2024 | below 0.001 µg/l 18 Mar 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 2 | Nov 2023 – Mar 2024 | below 0.001 µg/l 18 Mar 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 36 | Oct 2023 – Sep 2026 | 72 mg/l 15 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 36 | Oct 2023 – Sep 2026 | below 0.0004 mg/l 15 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 31 | Feb 2024 – Sep 2026 | below 3 mg/l 15 Sep 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 2 | Nov 2023 – Mar 2024 | below 0.001 µg/l 18 Mar 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 2 | Nov 2023 – Mar 2024 | below 0.002 µg/l 18 Mar 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 2 | Nov 2023 – Mar 2024 | below 0.002 µg/l 18 Mar 2024 |
| Nitrite as N 0118 | River water | 36 | Oct 2023 – Sep 2026 | 0.0095 mg/l 15 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 36 | Oct 2023 – Sep 2026 | 6.1 mg/l 15 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 2 | Nov 2023 – Mar 2024 | 0.001 µg/l 18 Mar 2024 |
| Perfluorobutanoic acid 2995 | River water | 2 | Nov 2023 – Mar 2024 | 0.0019 µg/l 18 Mar 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 2 | Nov 2023 – Mar 2024 | below 0.002 µg/l 18 Mar 2024 |
| Perfluorodecanoic acid 8892 | River water | 2 | Nov 2023 – Mar 2024 | below 0.002 µg/l 18 Mar 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 2 | Nov 2023 – Mar 2024 | below 0.005 µg/l 18 Mar 2024 |
| Perfluorododecanoic acid 8894 | River water | 2 | Nov 2023 – Mar 2024 | below 0.002 µg/l 18 Mar 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Perfluoroheptanoic acid 8889 | River water | 2 | Nov 2023 – Mar 2024 | below 0.001 µg/l 18 Mar 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 2 | Nov 2023 – Mar 2024 | 0.00064 µg/l 18 Mar 2024 |
| Perfluorohexanoic acid 8888 | River water | 2 | Nov 2023 – Mar 2024 | 0.00079 µg/l 18 Mar 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Perfluorononanoic acid 8891 | River water | 2 | Nov 2023 – Mar 2024 | below 0.001 µg/l 18 Mar 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 2 | Nov 2023 – Mar 2024 | below 0.002 µg/l 18 Mar 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 2 | Nov 2023 – Mar 2024 | below 0.001 µg/l 18 Mar 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 2 | Nov 2023 – Mar 2024 | 0.00073 µg/l 18 Mar 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 2 | Nov 2023 – Mar 2024 | 0.00061 µg/l 18 Mar 2024 |
| Perfluorooctanoic acid 8890 | River water | 2 | Nov 2023 – Mar 2024 | 0.001 µg/l 18 Mar 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 2 | Nov 2023 – Mar 2024 | below 0.0005 µg/l 18 Mar 2024 |
| Perfluoropentanoic acid 8887 | River water | 2 | Nov 2023 – Mar 2024 | below 0.001 µg/l 18 Mar 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 2 | Nov 2023 – Mar 2024 | below 0.006 µg/l 18 Mar 2024 |
| Perfluorotridecanoic acid 2955 | River water | 2 | Nov 2023 – Mar 2024 | below 0.005 µg/l 18 Mar 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 2 | Nov 2023 – Mar 2024 | below 0.004 µg/l 18 Mar 2024 |
| Perfluoroundecanoic acid 8893 | River water | 2 | Nov 2023 – Mar 2024 | below 0.002 µg/l 18 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.