Silk Stream at Silk Bridge, A5, Hendon
EA name: SILK STREAM AT SILK BRIDGE, A5, HENDON
Environment Agency sampling point TH-PBRR0094 · 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
- 12 Aug 2026, 12:1050 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 35 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 Environmental monitoring statutory (EU directives)
- Where
- National Grid 521783, 188345As published, to the nearest 1 m. Open in a map
- River, by its own name
- Silk Stream
- River, by the map
- Silk StreamPlaced on the river its name gives, 17 m from the line.
- Next gauge downstream
- Brent, Monks Park On the River Brent · 4.8 km along the river
- Nearest gauge upstream
- Colindale On the Silk Stream · 1.2 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (33 samples)
Monitoring (national agency policy) (2 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
45.8%
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 12:10 | 45.8 | 45.8% |
| 15 Jul 2026, 15:16 | 113.4 | 113.4% |
| 10 Jun 2026, 11:15 | 49.7 | 49.7% |
| 5 May 2026, 11:34 | 60.1 | 60.1% |
| 21 Apr 2026, 13:07 | 112.9 | 112.9% |
| 6 Mar 2026, 12:45 | 76.8 | 76.8% |
| 9 Feb 2026, 11:20 | 89.5 | 89.5% |
| 6 Jan 2026, 13:23 | 67.2 | 67.2% |
| 3 Dec 2025, 09:34 | 67.6 | 67.6% |
| 7 Nov 2025, 13:58 | 45.6 | 45.6% |
| 16 Oct 2025, 14:14 | 37.7 | 37.7% |
| 2 Sep 2025, 09:20 | 45.1 | 45.1% |
| 1 Aug 2025, 13:07 | 59.5 | 59.5% |
| 31 Jul 2025, 10:27 | 52.5 | 52.5% |
| 20 Jun 2025, 12:33 | 68.4 | 68.4% |
| 28 May 2025, 13:30 | 75.5 | 75.5% |
| 28 Apr 2025, 10:12 | 53.6 | 53.6% |
| 6 Mar 2025, 12:42 | 88.4 | 88.4% |
| 7 Feb 2025, 11:14 | 75.3 | 75.3% |
| 24 Jan 2025, 15:09 | 88.7 | 88.7% |
| 6 Dec 2024, 12:24 | 88.2 | 88.2% |
| 18 Nov 2024, 09:33 | 49.1 | 49.1% |
| 23 Oct 2024, 12:31 | 55.9 | 55.9% |
| 17 Sep 2024, 15:08 | 31.5 | 31.5% |
| 19 Aug 2024, 10:05 | 40.5 | 40.5% |
| 15 Jul 2024, 10:47 | 49.5 | 49.5% |
| 17 Jun 2024, 14:10 | 90.7 | 90.7% |
| 14 May 2024, 11:53 | 67.2 | 67.2% |
| 15 Apr 2024, 11:21 | 84.8 | 84.8% |
| 18 Mar 2024, 10:06 | 88.7 | 88.7% |
| 20 Feb 2024, 11:56 | 90.3 | 90.3% |
| 18 Jan 2024, 10:28 | 77.2 | 77.2% |
| 12 Dec 2023, 15:04 | 87.8 | 87.8% |
| 20 Nov 2023, 11:48 | 78.9 | 78.9% |
| 16 Oct 2023, 14:51 | 74.7 | 74.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
4.23 mg/l
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 12:10 | 4.23 | 4.23 mg/l |
| 15 Jul 2026, 15:16 | 9.99 | 9.99 mg/l |
| 10 Jun 2026, 11:15 | 5.1 | 5.1 mg/l |
| 5 May 2026, 11:34 | 6.32 | 6.32 mg/l |
| 21 Apr 2026, 13:07 | 12.2 | 12.2 mg/l |
| 6 Mar 2026, 12:45 | 8.57 | 8.57 mg/l |
| 9 Feb 2026, 11:20 | 10.5 | 10.5 mg/l |
| 6 Jan 2026, 13:23 | 9.23 | 9.23 mg/l |
| 3 Dec 2025, 09:34 | 7.84 | 7.84 mg/l |
| 7 Nov 2025, 13:58 | 4.61 | 4.61 mg/l |
| 16 Oct 2025, 14:14 | 3.94 | 3.94 mg/l |
| 2 Sep 2025, 09:20 | 4.48 | 4.48 mg/l |
| 1 Aug 2025, 13:07 | 5.72 | 5.72 mg/l |
| 31 Jul 2025, 10:27 | 4.97 | 4.97 mg/l |
| 20 Jun 2025, 12:33 | 6.24 | 6.24 mg/l |
| 28 May 2025, 13:30 | 7.4 | 7.4 mg/l |
| 28 Apr 2025, 10:12 | 5.67 | 5.67 mg/l |
| 6 Mar 2025, 12:42 | 10.1 | 10.1 mg/l |
| 7 Feb 2025, 11:14 | 9.53 | 9.53 mg/l |
| 24 Jan 2025, 15:09 | 10.6 | 10.6 mg/l |
| 6 Dec 2024, 12:24 | 10.2 | 10.2 mg/l |
| 18 Nov 2024, 09:33 | 5.52 | 5.52 mg/l |
| 23 Oct 2024, 12:31 | 5.76 | 5.76 mg/l |
| 17 Sep 2024, 15:08 | 3.08 | 3.08 mg/l |
| 19 Aug 2024, 10:05 | 4.02 | 4.02 mg/l |
| 15 Jul 2024, 10:47 | 4.93 | 4.93 mg/l |
| 17 Jun 2024, 14:10 | 8.84 | 8.84 mg/l |
| 14 May 2024, 11:53 | 6.79 | 6.79 mg/l |
| 15 Apr 2024, 11:21 | 9.29 | 9.29 mg/l |
| 18 Mar 2024, 10:06 | 9.78 | 9.78 mg/l |
| 20 Feb 2024, 11:56 | 10.3 | 10.3 mg/l |
| 18 Jan 2024, 10:28 | 10.8 | 10.8 mg/l |
| 12 Dec 2023, 15:04 | 10.1 | 10.1 mg/l |
| 20 Nov 2023, 11:48 | 8.7 | 8.7 mg/l |
| 16 Oct 2023, 14:51 | 8.07 | 8.07 mg/l |
Water temperature
code 0076 · °C
19.1 °C
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 12:10 | 19.1 | 19.1 °C |
| 15 Jul 2026, 15:16 | 21.5 | 21.5 °C |
| 10 Jun 2026, 11:15 | 14.1 | 14.1 °C |
| 5 May 2026, 11:34 | 13 | 13 °C |
| 21 Apr 2026, 13:07 | 11.8 | 11.8 °C |
| 6 Mar 2026, 12:45 | 10.4 | 10.4 °C |
| 9 Feb 2026, 11:20 | 8.5 | 8.5 °C |
| 6 Jan 2026, 13:23 | 2.2 | 2.2 °C |
| 3 Dec 2025, 09:34 | 8.8 | 8.8 °C |
| 7 Nov 2025, 13:58 | 14.8 | 14.8 °C |
| 16 Oct 2025, 14:14 | 13.3 | 13.3 °C |
| 2 Sep 2025, 09:20 | 15.6 | 15.6 °C |
| 1 Aug 2025, 13:07 | 17.1 | 17.1 °C |
| 31 Jul 2025, 10:27 | 17.9 | 17.9 °C |
| 20 Jun 2025, 12:33 | 19.7 | 19.7 °C |
| 28 May 2025, 13:30 | 16.2 | 16.2 °C |
| 28 Apr 2025, 10:12 | 12.7 | 12.7 °C |
| 6 Mar 2025, 12:42 | 9.3 | 9.3 °C |
| 7 Feb 2025, 11:14 | 5.3 | 5.3 °C |
| 24 Jan 2025, 15:09 | 7.7 | 7.7 °C |
| 6 Dec 2024, 12:24 | 9.1 | 9.1 °C |
| 18 Nov 2024, 09:33 | 10.1 | 10.1 °C |
| 23 Oct 2024, 12:31 | 13.9 | 13.9 °C |
| 17 Sep 2024, 15:08 | 16.3 | 16.3 °C |
| 19 Aug 2024, 10:05 | 15.6 | 15.6 °C |
| 15 Jul 2024, 10:47 | 15.5 | 15.5 °C |
| 17 Jun 2024, 14:10 | 16.5 | 16.5 °C |
| 14 May 2024, 11:53 | 14.8 | 14.8 °C |
| 15 Apr 2024, 11:21 | 11.2 | 11.2 °C |
| 18 Mar 2024, 10:06 | 10.9 | 10.9 °C |
| 20 Feb 2024, 11:56 | 9.5 | 9.5 °C |
| 18 Jan 2024, 10:28 | 1.6 | 1.6 °C |
| 12 Dec 2023, 15:04 | 9.1 | 9.1 °C |
| 20 Nov 2023, 11:48 | 10.9 | 10.9 °C |
| 16 Oct 2023, 14:51 | 11.8 | 11.8 °C |
pH
code 0061
7.79
Sampled 12 Aug 2026, 50 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 12:10 | 7.79 | 7.79 |
| 15 Jul 2026, 15:16 | 8.26 | 8.26 |
| 5 May 2026, 11:34 | 7.77 | 7.77 |
| 21 Apr 2026, 13:07 | 8.13 | 8.13 |
| 6 Mar 2026, 12:45 | 8.16 | 8.16 |
| 9 Feb 2026, 11:20 | 7.96 | 7.96 |
| 6 Jan 2026, 13:23 | 7.93 | 7.93 |
| 3 Dec 2025, 09:34 | 7.77 | 7.77 |
| 7 Nov 2025, 13:58 | 7.63 | 7.63 |
| 16 Oct 2025, 14:14 | 7.73 | 7.73 |
| 2 Sep 2025, 09:20 | 7.64 | 7.64 |
| 1 Aug 2025, 13:07 | 7.81 | 7.81 |
| 31 Jul 2025, 10:27 | 7.47 | 7.47 |
| 20 Jun 2025, 12:33 | 7.95 | 7.95 |
| 28 May 2025, 13:30 | 7.72 | 7.72 |
| 28 Apr 2025, 10:12 | 7.69 | 7.69 |
| 6 Mar 2025, 12:42 | 7.97 | 7.97 |
| 7 Feb 2025, 11:14 | 7.88 | 7.88 |
| 24 Jan 2025, 15:09 | 7.9 | 7.9 |
| 6 Dec 2024, 12:24 | 7.89 | 7.89 |
| 18 Nov 2024, 09:33 | 7.64 | 7.64 |
| 23 Oct 2024, 12:31 | 7.75 | 7.75 |
| 17 Sep 2024, 15:08 | 7.6 | 7.6 |
| 19 Aug 2024, 10:05 | 7.8 | 7.8 |
| 15 Jul 2024, 10:47 | 7.79 | 7.79 |
| 17 Jun 2024, 14:10 | 8.08 | 8.08 |
| 14 May 2024, 11:53 | 7.83 | 7.83 |
| 15 Apr 2024, 11:21 | 7.92 | 7.92 |
| 18 Mar 2024, 10:06 | 7.89 | 7.89 |
| 20 Feb 2024, 11:56 | 8.07 | 8.07 |
| 18 Jan 2024, 10:28 | 8.21 | 8.21 |
| 12 Dec 2023, 15:04 | 7.93 | 7.93 |
| 20 Nov 2023, 11:48 | 7.87 | 7.87 |
| 16 Oct 2023, 14:51 | 7.92 | 7.92 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.3 mg/l
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 12:10 | 0.3 | 0.3 mg/l |
| 15 Jul 2026, 15:16 | 0.06 | 0.06 mg/l |
| 10 Jun 2026, 11:15 | 0.4 | 0.4 mg/l |
| 5 May 2026, 11:34 | 0.32 | 0.32 mg/l |
| 21 Apr 2026, 13:07 | 0.18 | 0.18 mg/l |
| 6 Mar 2026, 12:45 | 0.29 | 0.29 mg/l |
| 9 Feb 2026, 11:20 | 0.08 | 0.08 mg/l |
| 6 Jan 2026, 13:23 | 1.2 | 1.2 mg/l |
| 3 Dec 2025, 09:34 | 0.19 | 0.19 mg/l |
| 7 Nov 2025, 13:58 | 0.16 | 0.16 mg/l |
| 16 Oct 2025, 14:14 | 0.28 | 0.28 mg/l |
| 2 Sep 2025, 09:20 | 0.27 | 0.27 mg/l |
| 1 Aug 2025, 13:07 | 0.17 | 0.17 mg/l |
| 31 Jul 2025, 10:27 | 1 | 1 mg/l |
| 20 Jun 2025, 12:33 | 0.18 | 0.18 mg/l |
| 28 May 2025, 13:30 | 0.16 | 0.16 mg/l |
| 28 Apr 2025, 10:12 | 0.31 | 0.31 mg/l |
| 6 Mar 2025, 12:42 | 0.6 | 0.6 mg/l |
| 7 Feb 2025, 11:14 | 0.46 | 0.46 mg/l |
| 24 Jan 2025, 15:09 | 0.17 | 0.17 mg/l |
| 6 Dec 2024, 12:24 | 0.14 | 0.14 mg/l |
| 18 Nov 2024, 09:33 | 1 | 1 mg/l |
| 23 Oct 2024, 12:31 | 0.18 | 0.18 mg/l |
| 17 Sep 2024, 15:08 | 0.37 | 0.37 mg/l |
| 19 Aug 2024, 10:05 | 0.094 | 0.094 mg/l |
| 15 Jul 2024, 10:47 | 0.46 | 0.46 mg/l |
| 17 Jun 2024, 14:10 | 0.34 | 0.34 mg/l |
| 14 May 2024, 11:53 | 0.57 | 0.57 mg/l |
| 15 Apr 2024, 11:21 | 0.45 | 0.45 mg/l |
| 18 Mar 2024, 10:06 | 0.098 | 0.098 mg/l |
| 20 Feb 2024, 11:56 | 0.12 | 0.12 mg/l |
| 18 Jan 2024, 10:28 | 0.74 | 0.74 mg/l |
| 12 Dec 2023, 15:04 | 0.073 | 0.073 mg/l |
| 20 Nov 2023, 11:48 | 0.12 | 0.12 mg/l |
| 16 Oct 2023, 14:51 | 0.37 | 0.37 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.62 mg/l
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 12:10 | 3.62 | 3.62 mg/l |
| 15 Jul 2026, 15:16 | 4.22 | 4.22 mg/l |
| 10 Jun 2026, 11:15 | 3.3 | 3.3 mg/l |
| 5 May 2026, 11:34 | 3.5 | 3.5 mg/l |
| 21 Apr 2026, 13:07 | 4.39 | 4.39 mg/l |
| 6 Mar 2026, 12:45 | 3 | 3 mg/l |
| 9 Feb 2026, 11:20 | 2.48 | 2.48 mg/l |
| 6 Jan 2026, 13:23 | 4.67 | 4.67 mg/l |
| 3 Dec 2025, 09:34 | 2.73 | 2.73 mg/l |
| 7 Nov 2025, 13:58 | 2.63 | 2.63 mg/l |
| 16 Oct 2025, 14:14 | 4.25 | 4.25 mg/l |
| 2 Sep 2025, 09:20 | 2.74 | 2.74 mg/l |
| 1 Aug 2025, 13:07 | 3.04 | 3.04 mg/l |
| 31 Jul 2025, 10:27 | 2.01 | 2.01 mg/l |
| 20 Jun 2025, 12:33 | 2.71 | 2.71 mg/l |
| 28 May 2025, 13:30 | 2.52 | 2.52 mg/l |
| 28 Apr 2025, 10:12 | 3.43 | 3.43 mg/l |
| 6 Mar 2025, 12:42 | 3.11 | 3.11 mg/l |
| 7 Feb 2025, 11:14 | 3.19 | 3.19 mg/l |
| 24 Jan 2025, 15:09 | 2.26 | 2.26 mg/l |
| 6 Dec 2024, 12:24 | 2.44 | 2.44 mg/l |
| 18 Nov 2024, 09:33 | 2.81 | 2.81 mg/l |
| 23 Oct 2024, 12:31 | 2.8 | 2.8 mg/l |
| 17 Sep 2024, 15:08 | 3.93 | 3.93 mg/l |
| 19 Aug 2024, 10:05 | 3.7 | 3.7 mg/l |
| 15 Jul 2024, 10:47 | 3.35 | 3.35 mg/l |
| 17 Jun 2024, 14:10 | 2.77 | 2.77 mg/l |
| 14 May 2024, 11:53 | 2.42 | 2.42 mg/l |
| 15 Apr 2024, 11:21 | 2.99 | 2.99 mg/l |
| 18 Mar 2024, 10:06 | 2.16 | 2.16 mg/l |
| 20 Feb 2024, 11:56 | 2.57 | 2.57 mg/l |
| 18 Jan 2024, 10:28 | 3.72 | 3.72 mg/l |
| 12 Dec 2023, 15:04 | 1.87 | 1.87 mg/l |
| 20 Nov 2023, 11:48 | 2.35 | 2.35 mg/l |
| 16 Oct 2023, 14:51 | 3.9 | 3.9 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.89 mg/l
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 12:10 | 0.89 | 0.89 mg/l |
| 15 Jul 2026, 15:16 | 0.69 | 0.69 mg/l |
| 10 Jun 2026, 11:15 | 0.63 | 0.63 mg/l |
| 5 May 2026, 11:34 | 0.79 | 0.79 mg/l |
| 21 Apr 2026, 13:07 | 0.6 | 0.6 mg/l |
| 6 Mar 2026, 12:45 | 0.37 | 0.37 mg/l |
| 9 Feb 2026, 11:20 | 0.16 | 0.16 mg/l |
| 6 Jan 2026, 13:23 | 0.54 | 0.54 mg/l |
| 3 Dec 2025, 09:34 | 0.29 | 0.29 mg/l |
| 7 Nov 2025, 13:58 | 0.55 | 0.55 mg/l |
| 16 Oct 2025, 14:14 | 0.83 | 0.83 mg/l |
| 2 Sep 2025, 09:20 | 0.46 | 0.46 mg/l |
| 1 Aug 2025, 13:07 | 0.49 | 0.49 mg/l |
| 31 Jul 2025, 10:27 | 0.36 | 0.36 mg/l |
| 20 Jun 2025, 12:33 | 0.76 | 0.76 mg/l |
| 28 May 2025, 13:30 | 0.4 | 0.4 mg/l |
| 28 Apr 2025, 10:12 | 0.47 | 0.47 mg/l |
| 6 Mar 2025, 12:42 | 0.33 | 0.33 mg/l |
| 7 Feb 2025, 11:14 | 0.33 | 0.33 mg/l |
| 24 Jan 2025, 15:09 | 0.18 | 0.18 mg/l |
| 6 Dec 2024, 12:24 | 0.22 | 0.22 mg/l |
| 18 Nov 2024, 09:33 | 0.49 | 0.49 mg/l |
| 23 Oct 2024, 12:31 | 0.42 | 0.42 mg/l |
| 17 Sep 2024, 15:08 | 0.68 | 0.68 mg/l |
| 19 Aug 2024, 10:05 | 0.69 | 0.69 mg/l |
| 15 Jul 2024, 10:47 | 0.55 | 0.55 mg/l |
| 17 Jun 2024, 14:10 | 0.53 | 0.53 mg/l |
| 14 May 2024, 11:53 | 0.31 | 0.31 mg/l |
| 15 Apr 2024, 11:21 | 0.34 | 0.34 mg/l |
| 18 Mar 2024, 10:06 | 0.2 | 0.2 mg/l |
| 20 Feb 2024, 11:56 | 0.17 | 0.17 mg/l |
| 18 Jan 2024, 10:28 | 0.4 | 0.4 mg/l |
| 12 Dec 2023, 15:04 | 0.13 | 0.13 mg/l |
| 20 Nov 2023, 11:48 | 0.24 | 0.24 mg/l |
| 16 Oct 2023, 14:51 | 0.38 | 0.38 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
980 µS/cm
Sampled 12 Aug 2026, 50 days ago · 35 results banked
Every result (35)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 12:10 | 980 | 980 µS/cm |
| 15 Jul 2026, 15:16 | 982 | 982 µS/cm |
| 10 Jun 2026, 11:15 | 914 | 914 µS/cm |
| 5 May 2026, 11:34 | 1010 | 1010 µS/cm |
| 21 Apr 2026, 13:07 | 989 | 989 µS/cm |
| 6 Mar 2026, 12:45 | 991 | 991 µS/cm |
| 9 Feb 2026, 11:20 | 727 | 727 µS/cm |
| 6 Jan 2026, 13:23 | 1079 | 1079 µS/cm |
| 3 Dec 2025, 09:34 | 795 | 795 µS/cm |
| 7 Nov 2025, 13:58 | 808 | 808 µS/cm |
| 16 Oct 2025, 14:14 | 997 | 997 µS/cm |
| 2 Sep 2025, 09:20 | 742 | 742 µS/cm |
| 1 Aug 2025, 13:07 | 848 | 848 µS/cm |
| 31 Jul 2025, 10:27 | 456 | 456 µS/cm |
| 20 Jun 2025, 12:33 | 1007 | 1007 µS/cm |
| 28 May 2025, 13:30 | 766 | 766 µS/cm |
| 28 Apr 2025, 10:12 | 1032 | 1032 µS/cm |
| 6 Mar 2025, 12:42 | 986 | 986 µS/cm |
| 7 Feb 2025, 11:14 | 977 | 977 µS/cm |
| 24 Jan 2025, 15:09 | 808 | 808 µS/cm |
| 6 Dec 2024, 12:24 | 698 | 698 µS/cm |
| 18 Nov 2024, 09:33 | 753 | 753 µS/cm |
| 23 Oct 2024, 12:31 | 878 | 878 µS/cm |
| 17 Sep 2024, 15:08 | 933 | 933 µS/cm |
| 19 Aug 2024, 10:05 | 932 | 932 µS/cm |
| 15 Jul 2024, 10:47 | 964 | 964 µS/cm |
| 17 Jun 2024, 14:10 | 908 | 908 µS/cm |
| 14 May 2024, 11:53 | 667 | 667 µS/cm |
| 15 Apr 2024, 11:21 | 824 | 824 µS/cm |
| 18 Mar 2024, 10:06 | 801 | 801 µS/cm |
| 20 Feb 2024, 11:56 | 791 | 791 µS/cm |
| 18 Jan 2024, 10:28 | 998 | 998 µS/cm |
| 12 Dec 2023, 15:04 | 593 | 593 µS/cm |
| 20 Nov 2023, 11:48 | 818 | 818 µS/cm |
| 16 Oct 2023, 14:51 | 942 | 942 µS/cm |
Everything measured here
73 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 73 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 35 | Oct 2023 – Aug 2026 | 45.8% 12 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 35 | Oct 2023 – Aug 2026 | 4.23 mg/l 12 Aug 2026 |
| Temperature of Water 0076 | River water | 35 | Oct 2023 – Aug 2026 | 19.1 °C 12 Aug 2026 |
| pH 0061 | River water | 34 | Oct 2023 – Aug 2026 | 7.79 12 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 35 | Oct 2023 – Aug 2026 | 0.3 mg/l 12 Aug 2026 |
| Nitrate as N 0117 | River water | 35 | Oct 2023 – Aug 2026 | 3.62 mg/l 12 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 35 | Oct 2023 – Aug 2026 | 0.89 mg/l 12 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 35 | Oct 2023 – Aug 2026 | 980 µS/cm 12 Aug 2026 |
| 10:2 Fluorotelomer sulfonic acid 2994 | River water | 1 | Jan 2026 – Jan 2026 | below 0.002 µg/l 6 Jan 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| 2H-Perfluoro-2-decenoic acid 2888 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Jan 2026 – Jan 2026 | below 0.004 µg/l 6 Jan 2026 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| 5:1:2 Fluorotelomer betaine 2887 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| 5:3 Fluorotelomer betaine 2886 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| 6:2 Fluorotelomer phosphate diester 2986 | River water | 1 | Jan 2026 – Jan 2026 | below 0.004 µg/l 6 Jan 2026 |
| 6:2 Fluorotelomer sulfonamide amine oxide (6:2 FTNO) (Capstone A) 2841 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| 6:2 Fluorotelomer sulfonamide betaine 2985 | River water | 1 | Jan 2026 – Jan 2026 | 0.0051 µg/l 6 Jan 2026 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| 6:2/8:2 Fluorotelomer phosphate diester 2884 | River water | 1 | Jan 2026 – Jan 2026 | below 0.01 µg/l 6 Jan 2026 |
| 6:6 Perfluorophosphinic acid 2883 | River water | 1 | Jan 2026 – Jan 2026 | below 0.004 µg/l 6 Jan 2026 |
| 6:8 Perfluorophosphinic acid 2882 | River water | 1 | Jan 2026 – Jan 2026 | below 0.01 µg/l 6 Jan 2026 |
| 8:2 Fluorotelomer phosphate diester 2880 | River water | 1 | Jan 2026 – Jan 2026 | below 0.004 µg/l 6 Jan 2026 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| 8:8 Perfluorophosphinic acid 2879 | River water | 1 | Jan 2026 – Jan 2026 | below 0.01 µg/l 6 Jan 2026 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 35 | Oct 2023 – Aug 2026 | 280 mg/l 12 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 34 | Oct 2023 – Aug 2026 | 0.00663 mg/l 12 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 27 | Feb 2024 – May 2026 | 1.8 mg/l 5 May 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| Hexafluoropropylene oxide trimer acid 2980 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Jan 2026 – Jan 2026 | below 0.002 µg/l 6 Jan 2026 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Jan 2026 – Jan 2026 | below 0.002 µg/l 6 Jan 2026 |
| Nitrite as N 0118 | River water | 35 | Oct 2023 – Aug 2026 | 0.28 mg/l 12 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 35 | Oct 2023 – Aug 2026 | 3.9 mg/l 12 Aug 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Jan 2026 – Jan 2026 | 0.0052 µg/l 6 Jan 2026 |
| Perfluorobutanoic acid 2995 | River water | 1 | Jan 2026 – Jan 2026 | 0.0045 µg/l 6 Jan 2026 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Jan 2026 – Jan 2026 | 0.00099 µg/l 6 Jan 2026 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| Perfluorodecanoic acid 8892 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Jan 2026 – Jan 2026 | below 0.005 µg/l 6 Jan 2026 |
| Perfluorododecanoic acid 8894 | River water | 1 | Jan 2026 – Jan 2026 | below 0.002 µg/l 6 Jan 2026 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Jan 2026 – Jan 2026 | 0.0025 µg/l 6 Jan 2026 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Jan 2026 – Jan 2026 | 0.001 µg/l 6 Jan 2026 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Jan 2026 – Jan 2026 | 0.0038 µg/l 6 Jan 2026 |
| Perfluorohexanoic acid 8888 | River water | 1 | Jan 2026 – Jan 2026 | 0.0066 µg/l 6 Jan 2026 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Jan 2026 – Jan 2026 | below 0.0005 µg/l 6 Jan 2026 |
| Perfluorononanoic acid 8891 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Jan 2026 – Jan 2026 | below 0.002 µg/l 6 Jan 2026 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 2026 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Jan 2026 – Jan 2026 | 0.004 µg/l 6 Jan 2026 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Jan 2026 – Jan 2026 | 0.0049 µg/l 6 Jan 2026 |
| Perfluorooctanesulfonic acid (total) 2958 | River water | 1 | Jan 2026 – Jan 2026 | 0.0089 µg/l 6 Jan 2026 |
| Perfluorooctanoic acid 8890 | River water | 1 | Jan 2026 – Jan 2026 | 0.0051 µg/l 6 Jan 2026 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Jan 2026 – Jan 2026 | 0.00064 µg/l 6 Jan 2026 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Jan 2026 – Jan 2026 | below 0.006 µg/l 6 Jan 2026 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Jan 2026 – Jan 2026 | below 0.002 µg/l 6 Jan 2026 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Jan 2026 – Jan 2026 | below 0.004 µg/l 6 Jan 2026 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Jan 2026 – Jan 2026 | below 0.001 µg/l 6 Jan 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.