Stort at Gypsy Lane
EA name: STORT AT GYPSY LANE
Environment Agency sampling point TH-PLER0146 · 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
- 1 Sep 2026, 12:1330 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)
- Where
- National Grid 550362, 223918As published, to the nearest 1 m. Open in a map
- River, by its own name
- Stort
- River, by the map
- River StortPlaced on the river its name gives, 5 m from the line.
- Next gauge downstream
- Bishops Stortford, Grange Paddocks On the River Stort · 2.8 km along the river
- Nearest gauge upstream
- Clavering On the River Stort · 10 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (34 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
66.1%
Sampled 1 Sep 2026, 30 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:13 | 66.1 | 66.1% |
| 7 Aug 2026, 11:30 | 68.9 | 68.9% |
| 7 Jul 2026, 10:00 | 64.2 | 64.2% |
| 3 Jun 2026, 14:03 | 67.9 | 67.9% |
| 19 May 2026, 12:42 | 75.6 | 75.6% |
| 13 Apr 2026, 13:11 | 94.6 | 94.6% |
| 16 Mar 2026, 12:51 | 86.5 | 86.5% |
| 3 Feb 2026, 10:13 | 86.1 | 86.1% |
| 14 Jan 2026, 11:15 | 89 | 89% |
| 2 Dec 2025, 10:57 | 61.4 | 61.4% |
| 6 Nov 2025, 09:51 | 82 | 82% |
| 9 Oct 2025, 09:13 | 70.5 | 70.5% |
| 4 Sep 2025, 12:49 | 76.2 | 76.2% |
| 11 Aug 2025, 12:44 | 80.8 | 80.8% |
| 21 Jul 2025, 12:02 | 78 | 78% |
| 16 Jun 2025, 13:07 | 87.5 | 87.5% |
| 21 May 2025, 12:22 | 85.8 | 85.8% |
| 11 Apr 2025, 09:21 | 77.8 | 77.8% |
| 11 Mar 2025, 09:40 | 84.5 | 84.5% |
| 18 Feb 2025, 13:24 | 89.5 | 89.5% |
| 27 Jan 2025, 12:47 | 95.6 | 95.6% |
| 11 Dec 2024, 10:35 | 85.5 | 85.5% |
| 20 Nov 2024, 10:04 | 84.3 | 84.3% |
| 21 Oct 2024, 13:38 | 80.4 | 80.4% |
| 30 Sep 2024, 14:11 | 73.6 | 73.6% |
| 21 Aug 2024, 13:44 | 85.5 | 85.5% |
| 16 Jul 2024, 10:12 | 78.1 | 78.1% |
| 20 Jun 2024, 11:39 | 85.1 | 85.1% |
| 7 Mar 2024, 12:09 | 88.8 | 88.8% |
| 9 Feb 2024, 10:20 | 90 | 90% |
| 10 Jan 2024, 10:28 | 90.2 | 90.2% |
| 12 Dec 2023, 10:07 | 82.2 | 82.2% |
| 16 Nov 2023, 08:44 | 84.2 | 84.2% |
| 11 Oct 2023, 11:31 | 66.5 | 66.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.95 mg/l
Sampled 1 Sep 2026, 30 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:13 | 6.95 | 6.95 mg/l |
| 7 Aug 2026, 11:30 | 7.29 | 7.29 mg/l |
| 7 Jul 2026, 10:00 | 6.59 | 6.59 mg/l |
| 3 Jun 2026, 14:03 | 7.14 | 7.14 mg/l |
| 19 May 2026, 12:42 | 8.19 | 8.19 mg/l |
| 13 Apr 2026, 13:11 | 10.5 | 10.5 mg/l |
| 16 Mar 2026, 12:51 | 9.93 | 9.93 mg/l |
| 3 Feb 2026, 10:13 | 10.5 | 10.5 mg/l |
| 14 Jan 2026, 11:15 | 11.3 | 11.3 mg/l |
| 2 Dec 2025, 10:57 | 6.93 | 6.93 mg/l |
| 6 Nov 2025, 09:51 | 8.86 | 8.86 mg/l |
| 9 Oct 2025, 09:13 | 7.76 | 7.76 mg/l |
| 4 Sep 2025, 12:49 | 7.87 | 7.87 mg/l |
| 11 Aug 2025, 12:44 | 8.4 | 8.4 mg/l |
| 21 Jul 2025, 12:02 | 8.04 | 8.04 mg/l |
| 16 Jun 2025, 13:07 | 9.07 | 9.07 mg/l |
| 21 May 2025, 12:22 | 9.27 | 9.27 mg/l |
| 11 Apr 2025, 09:21 | 9 | 9 mg/l |
| 11 Mar 2025, 09:40 | 9.92 | 9.92 mg/l |
| 18 Feb 2025, 13:24 | 11.1 | 11.1 mg/l |
| 27 Jan 2025, 12:47 | 11.9 | 11.9 mg/l |
| 11 Dec 2024, 10:35 | 9.91 | 9.91 mg/l |
| 20 Nov 2024, 10:04 | 10.5 | 10.5 mg/l |
| 21 Oct 2024, 13:38 | 8.55 | 8.55 mg/l |
| 30 Sep 2024, 14:11 | 7.81 | 7.81 mg/l |
| 21 Aug 2024, 13:44 | 8.85 | 8.85 mg/l |
| 16 Jul 2024, 10:12 | 7.96 | 7.96 mg/l |
| 20 Jun 2024, 11:39 | 9.11 | 9.11 mg/l |
| 7 Mar 2024, 12:09 | 10.2 | 10.2 mg/l |
| 9 Feb 2024, 10:20 | 10.6 | 10.6 mg/l |
| 10 Jan 2024, 10:28 | 11.4 | 11.4 mg/l |
| 12 Dec 2023, 10:07 | 9.63 | 9.63 mg/l |
| 16 Nov 2023, 08:44 | 10 | 10 mg/l |
| 11 Oct 2023, 11:31 | 6.96 | 6.96 mg/l |
Water temperature
code 0076 · °C
13 °C
Sampled 1 Sep 2026, 30 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:13 | 13 | 13 °C |
| 7 Aug 2026, 11:30 | 12.7 | 12.7 °C |
| 7 Jul 2026, 10:00 | 14.1 | 14.1 °C |
| 3 Jun 2026, 14:03 | 13 | 13 °C |
| 19 May 2026, 12:42 | 11.7 | 11.7 °C |
| 13 Apr 2026, 13:11 | 10.6 | 10.6 °C |
| 16 Mar 2026, 12:51 | 9.2 | 9.2 °C |
| 3 Feb 2026, 10:13 | 6.6 | 6.6 °C |
| 14 Jan 2026, 11:15 | 5.2 | 5.2 °C |
| 2 Dec 2025, 10:57 | 9.9 | 9.9 °C |
| 6 Nov 2025, 09:51 | 11.8 | 11.8 °C |
| 9 Oct 2025, 09:13 | 11 | 11 °C |
| 4 Sep 2025, 12:49 | 13.8 | 13.8 °C |
| 11 Aug 2025, 12:44 | 13.5 | 13.5 °C |
| 21 Jul 2025, 12:02 | 13.9 | 13.9 °C |
| 16 Jun 2025, 13:07 | 13.6 | 13.6 °C |
| 21 May 2025, 12:22 | 11.8 | 11.8 °C |
| 11 Apr 2025, 09:21 | 8.9 | 8.9 °C |
| 11 Mar 2025, 09:40 | 8.3 | 8.3 °C |
| 18 Feb 2025, 13:24 | 6 | 6 °C |
| 27 Jan 2025, 12:47 | 6.1 | 6.1 °C |
| 11 Dec 2024, 10:35 | 8.8 | 8.8 °C |
| 20 Nov 2024, 10:04 | 6 | 6 °C |
| 21 Oct 2024, 13:38 | 12.5 | 12.5 °C |
| 30 Sep 2024, 14:11 | 12.6 | 12.6 °C |
| 21 Aug 2024, 13:44 | 13.7 | 13.7 °C |
| 16 Jul 2024, 10:12 | 14.4 | 14.4 °C |
| 20 Jun 2024, 11:39 | 12.2 | 12.2 °C |
| 7 Mar 2024, 12:09 | 9.2 | 9.2 °C |
| 9 Feb 2024, 10:20 | 8.1 | 8.1 °C |
| 10 Jan 2024, 10:28 | 5.2 | 5.2 °C |
| 12 Dec 2023, 10:07 | 8.4 | 8.4 °C |
| 16 Nov 2023, 08:44 | 7.7 | 7.7 °C |
| 11 Oct 2023, 11:31 | 13.2 | 13.2 °C |
pH
code 0061
7.34
Sampled 1 Sep 2026, 30 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:13 | 7.34 | 7.34 |
| 7 Aug 2026, 11:30 | 7.43 | 7.43 |
| 7 Jul 2026, 10:00 | 7.33 | 7.33 |
| 3 Jun 2026, 14:03 | 7.38 | 7.38 |
| 19 May 2026, 12:42 | 7.31 | 7.31 |
| 13 Apr 2026, 13:11 | 7.6 | 7.6 |
| 16 Mar 2026, 12:51 | 7.57 | 7.57 |
| 3 Feb 2026, 10:13 | 8.03 | 8.03 |
| 14 Jan 2026, 11:15 | 7.93 | 7.93 |
| 2 Dec 2025, 10:57 | 7.53 | 7.53 |
| 6 Nov 2025, 09:51 | 7.97 | 7.97 |
| 9 Oct 2025, 09:13 | 7.43 | 7.43 |
| 4 Sep 2025, 12:49 | 7.45 | 7.45 |
| 11 Aug 2025, 12:44 | 7.36 | 7.36 |
| 21 Jul 2025, 12:02 | 7.51 | 7.51 |
| 16 Jun 2025, 13:07 | 7.39 | 7.39 |
| 21 May 2025, 12:22 | 7.4 | 7.4 |
| 11 Apr 2025, 09:21 | 7.46 | 7.46 |
| 11 Mar 2025, 09:40 | 7.52 | 7.52 |
| 18 Feb 2025, 13:24 | 7.66 | 7.66 |
| 27 Jan 2025, 12:47 | 8.1 | 8.1 |
| 11 Dec 2024, 10:35 | 7.71 | 7.71 |
| 20 Nov 2024, 10:04 | 7.83 | 7.83 |
| 21 Oct 2024, 13:38 | 7.44 | 7.44 |
| 30 Sep 2024, 14:11 | 7.43 | 7.43 |
| 21 Aug 2024, 13:44 | 7.52 | 7.52 |
| 16 Jul 2024, 10:12 | 7.62 | 7.62 |
| 20 Jun 2024, 11:39 | 7.58 | 7.58 |
| 7 Mar 2024, 12:09 | 7.55 | 7.55 |
| 9 Feb 2024, 10:20 | 7.86 | 7.86 |
| 10 Jan 2024, 10:28 | 7.78 | 7.78 |
| 12 Dec 2023, 10:07 | 7.66 | 7.66 |
| 16 Nov 2023, 08:44 | 7.83 | 7.83 |
| 11 Oct 2023, 11:31 | 7.29 | 7.29 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.038 mg/l
Sampled 1 Sep 2026, 30 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:13 | 0.038 | 0.038 mg/l |
| 7 Aug 2026, 11:30 | 0.034 | 0.034 mg/l |
| 7 Jul 2026, 10:00 | 0.035 | 0.035 mg/l |
| 3 Jun 2026, 14:03 | 0.1 | 0.1 mg/l |
| 19 May 2026, 12:42 | 0.053 | 0.053 mg/l |
| 13 Apr 2026, 13:11 | 0.89 | 0.89 mg/l |
| 16 Mar 2026, 12:51 | 0.35 | 0.35 mg/l |
| 3 Feb 2026, 10:13 | 0.033 | 0.033 mg/l |
| 14 Jan 2026, 11:15 | 0.25 | 0.25 mg/l |
| 2 Dec 2025, 10:57 | 0.047 | 0.047 mg/l |
| 6 Nov 2025, 09:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Oct 2025, 09:13 | 0.032 | 0.032 mg/l |
| 4 Sep 2025, 12:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Aug 2025, 12:44 | 0.058 | 0.058 mg/l |
| 21 Jul 2025, 12:02 | 0.03 | 0.03 mg/l |
| 16 Jun 2025, 13:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 May 2025, 12:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Apr 2025, 09:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Mar 2025, 09:40 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Feb 2025, 13:24 | 0.11 | 0.11 mg/l |
| 27 Jan 2025, 12:47 | 0.27 | 0.27 mg/l |
| 11 Dec 2024, 10:35 | 0.035 | 0.035 mg/l |
| 20 Nov 2024, 10:04 | 0.036 | 0.036 mg/l |
| 21 Oct 2024, 13:38 | 0.091 | 0.091 mg/l |
| 30 Sep 2024, 14:11 | 0.095 | 0.095 mg/l |
| 21 Aug 2024, 13:44 | 0.032 | 0.032 mg/l |
| 16 Jul 2024, 10:12 | 0.32 | 0.32 mg/l |
| 20 Jun 2024, 11:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Mar 2024, 12:09 | 0.039 | 0.039 mg/l |
| 9 Feb 2024, 10:20 | 0.099 | 0.099 mg/l |
| 10 Jan 2024, 10:28 | 0.055 | 0.055 mg/l |
| 12 Dec 2023, 10:07 | 0.061 | 0.061 mg/l |
| 16 Nov 2023, 08:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Oct 2023, 11:31 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
12 mg/l
Sampled 1 Sep 2026, 30 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:13 | 12 | 12 mg/l |
| 7 Aug 2026, 11:30 | 12 | 12 mg/l |
| 7 Jul 2026, 10:00 | 11 | 11 mg/l |
| 3 Jun 2026, 14:03 | 13.9 | 13.9 mg/l |
| 19 May 2026, 12:42 | 15.9 | 15.9 mg/l |
| 13 Apr 2026, 13:11 | 14.8 | 14.8 mg/l |
| 16 Mar 2026, 12:51 | 12.9 | 12.9 mg/l |
| 3 Feb 2026, 10:13 | 15 | 15 mg/l |
| 14 Jan 2026, 11:15 | 19 | 19 mg/l |
| 2 Dec 2025, 10:57 | 12.9 | 12.9 mg/l |
| 6 Nov 2025, 09:51 | 12.9 | 12.9 mg/l |
| 9 Oct 2025, 09:13 | 12 | 12 mg/l |
| 4 Sep 2025, 12:49 | 9.98 | 9.98 mg/l |
| 11 Aug 2025, 12:44 | 11 | 11 mg/l |
| 21 Jul 2025, 12:02 | 9.38 | 9.38 mg/l |
| 16 Jun 2025, 13:07 | 15 | 15 mg/l |
| 21 May 2025, 12:22 | 15 | 15 mg/l |
| 11 Apr 2025, 09:21 | 12 | 12 mg/l |
| 11 Mar 2025, 09:40 | 12 | 12 mg/l |
| 18 Feb 2025, 13:24 | 13.9 | 13.9 mg/l |
| 27 Jan 2025, 12:47 | 11 | 11 mg/l |
| 11 Dec 2024, 10:35 | 12 | 12 mg/l |
| 20 Nov 2024, 10:04 | 17 | 17 mg/l |
| 21 Oct 2024, 13:38 | 13 | 13 mg/l |
| 30 Sep 2024, 14:11 | 14.9 | 14.9 mg/l |
| 21 Aug 2024, 13:44 | 12 | 12 mg/l |
| 16 Jul 2024, 10:12 | 7.84 | 7.84 mg/l |
| 20 Jun 2024, 11:39 | 9.98 | 9.98 mg/l |
| 7 Mar 2024, 12:09 | 9.98 | 9.98 mg/l |
| 9 Feb 2024, 10:20 | 8.85 | 8.85 mg/l |
| 10 Jan 2024, 10:28 | 12 | 12 mg/l |
| 12 Dec 2023, 10:07 | 14 | 14 mg/l |
| 16 Nov 2023, 08:44 | 7.97 | 7.97 mg/l |
| 11 Oct 2023, 11:31 | 9.98 | 9.98 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.16 mg/l
Sampled 1 Sep 2026, 30 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:13 | 0.16 | 0.16 mg/l |
| 7 Aug 2026, 11:30 | 0.49 | 0.49 mg/l |
| 7 Jul 2026, 10:00 | 0.25 | 0.25 mg/l |
| 3 Jun 2026, 14:03 | 0.33 | 0.33 mg/l |
| 19 May 2026, 12:42 | 0.4 | 0.4 mg/l |
| 13 Apr 2026, 13:11 | 0.24 | 0.24 mg/l |
| 16 Mar 2026, 12:51 | 0.21 | 0.21 mg/l |
| 3 Feb 2026, 10:13 | 0.12 | 0.12 mg/l |
| 14 Jan 2026, 11:15 | 0.16 | 0.16 mg/l |
| 2 Dec 2025, 10:57 | 0.21 | 0.21 mg/l |
| 6 Nov 2025, 09:51 | 0.15 | 0.15 mg/l |
| 9 Oct 2025, 09:13 | 0.14 | 0.14 mg/l |
| 4 Sep 2025, 12:49 | 0.11 | 0.11 mg/l |
| 11 Aug 2025, 12:44 | 0.093 | 0.093 mg/l |
| 21 Jul 2025, 12:02 | 0.1 | 0.1 mg/l |
| 16 Jun 2025, 13:07 | 0.15 | 0.15 mg/l |
| 21 May 2025, 12:22 | 0.074 | 0.074 mg/l |
| 11 Apr 2025, 09:21 | 0.072 | 0.072 mg/l |
| 11 Mar 2025, 09:40 | 0.11 | 0.11 mg/l |
| 18 Feb 2025, 13:24 | 0.1 | 0.1 mg/l |
| 27 Jan 2025, 12:47 | 0.11 | 0.11 mg/l |
| 11 Dec 2024, 10:35 | 0.084 | 0.084 mg/l |
| 20 Nov 2024, 10:04 | 0.16 | 0.16 mg/l |
| 21 Oct 2024, 13:38 | 0.24 | 0.24 mg/l |
| 30 Sep 2024, 14:11 | 0.27 | 0.27 mg/l |
| 21 Aug 2024, 13:44 | 0.23 | 0.23 mg/l |
| 16 Jul 2024, 10:12 | 0.27 | 0.27 mg/l |
| 20 Jun 2024, 11:39 | 0.18 | 0.18 mg/l |
| 7 Mar 2024, 12:09 | 0.15 | 0.15 mg/l |
| 9 Feb 2024, 10:20 | 0.12 | 0.12 mg/l |
| 10 Jan 2024, 10:28 | 0.18 | 0.18 mg/l |
| 12 Dec 2023, 10:07 | 0.18 | 0.18 mg/l |
| 16 Nov 2023, 08:44 | 0.08 | 0.08 mg/l |
| 11 Oct 2023, 11:31 | 0.16 | 0.16 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
779 µS/cm
Sampled 1 Sep 2026, 30 days ago · 34 results banked
Every result (34)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 12:13 | 779 | 779 µS/cm |
| 7 Aug 2026, 11:30 | 780 | 780 µS/cm |
| 7 Jul 2026, 10:00 | 777 | 777 µS/cm |
| 3 Jun 2026, 14:03 | 809 | 809 µS/cm |
| 19 May 2026, 12:42 | 850 | 850 µS/cm |
| 13 Apr 2026, 13:11 | 861 | 861 µS/cm |
| 16 Mar 2026, 12:51 | 810 | 810 µS/cm |
| 3 Feb 2026, 10:13 | 751 | 751 µS/cm |
| 14 Jan 2026, 11:15 | 730 | 730 µS/cm |
| 2 Dec 2025, 10:57 | 809 | 809 µS/cm |
| 6 Nov 2025, 09:51 | 878 | 878 µS/cm |
| 9 Oct 2025, 09:13 | 804 | 804 µS/cm |
| 4 Sep 2025, 12:49 | 683 | 683 µS/cm |
| 11 Aug 2025, 12:44 | 772 | 772 µS/cm |
| 21 Jul 2025, 12:02 | 743 | 743 µS/cm |
| 16 Jun 2025, 13:07 | 833 | 833 µS/cm |
| 21 May 2025, 12:22 | 830 | 830 µS/cm |
| 11 Apr 2025, 09:21 | 771 | 771 µS/cm |
| 11 Mar 2025, 09:40 | 776 | 776 µS/cm |
| 18 Feb 2025, 13:24 | 796 | 796 µS/cm |
| 27 Jan 2025, 12:47 | 708 | 708 µS/cm |
| 11 Dec 2024, 10:35 | 726 | 726 µS/cm |
| 20 Nov 2024, 10:04 | 707 | 707 µS/cm |
| 21 Oct 2024, 13:38 | 738 | 738 µS/cm |
| 30 Sep 2024, 14:11 | 815 | 815 µS/cm |
| 21 Aug 2024, 13:44 | 830 | 830 µS/cm |
| 16 Jul 2024, 10:12 | 663 | 663 µS/cm |
| 20 Jun 2024, 11:39 | 807 | 807 µS/cm |
| 7 Mar 2024, 12:09 | 785 | 785 µS/cm |
| 9 Feb 2024, 10:20 | 503 | 503 µS/cm |
| 10 Jan 2024, 10:28 | 762 | 762 µS/cm |
| 12 Dec 2023, 10:07 | 754 | 754 µS/cm |
| 16 Nov 2023, 08:44 | 693 | 693 µS/cm |
| 11 Oct 2023, 11:31 | 769 | 769 µS/cm |
Everything measured here
58 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 58 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 34 | Oct 2023 – Sep 2026 | 66.1% 1 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 34 | Oct 2023 – Sep 2026 | 6.95 mg/l 1 Sep 2026 |
| Temperature of Water 0076 | River water | 34 | Oct 2023 – Sep 2026 | 13 °C 1 Sep 2026 |
| pH 0061 | River water | 34 | Oct 2023 – Sep 2026 | 7.34 1 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 34 | Oct 2023 – Sep 2026 | 0.038 mg/l 1 Sep 2026 |
| Nitrate as N 0117 | River water | 34 | Oct 2023 – Sep 2026 | 12 mg/l 1 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 34 | Oct 2023 – Sep 2026 | 0.16 mg/l 1 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 34 | Oct 2023 – Sep 2026 | 779 µS/cm 1 Sep 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 11 Dec 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 11 Dec 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 11 Dec 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 11 Dec 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 11 Dec 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Dec 2024 – Dec 2024 | below 0.004 µg/l 11 Dec 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Dec 2024 – Dec 2024 | below 0.005 µg/l 11 Dec 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 11 Dec 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 34 | Oct 2023 – Sep 2026 | 260 mg/l 1 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 34 | Oct 2023 – Sep 2026 | 0.00019 mg/l 1 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 24 | Jun 2024 – May 2026 | 1.7 mg/l 19 May 2026 |
| Calcium, Dissolved 0239 | River water | 6 | Apr 2025 – Jul 2026 | 130 mg/l 7 Jul 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 6 | Apr 2025 – Jul 2026 | 1.8 mg/l 7 Jul 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 11 Dec 2024 |
| Iron 6051 | River water | 6 | Apr 2025 – Jul 2026 | 260 µg/l 7 Jul 2026 |
| Iron, Dissolved 6460 | River water | 6 | Apr 2025 – Jul 2026 | 30 µg/l 7 Jul 2026 |
| Magnesium, Dissolved 0235 | River water | 6 | Apr 2025 – Jul 2026 | 4.2 mg/l 7 Jul 2026 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 11 Dec 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 11 Dec 2024 |
| Nickel : BLM Bioavailable 3878 | River water | 6 | Apr 2025 – Jul 2026 | 0.47 µg/l 7 Jul 2026 |
| Nickel, Dissolved 3410 | River water | 6 | Apr 2025 – Jul 2026 | 1.5 µg/l 7 Jul 2026 |
| Nitrite as N 0118 | River water | 34 | Oct 2023 – Sep 2026 | 0.035 mg/l 1 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 34 | Oct 2023 – Sep 2026 | 12 mg/l 1 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Dec 2024 – Dec 2024 | 0.00052 µg/l 11 Dec 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 11 Dec 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 11 Dec 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Dec 2024 – Dec 2024 | below 0.005 µg/l 11 Dec 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 11 Dec 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Dec 2024 – Dec 2024 | 0.00097 µg/l 11 Dec 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Dec 2024 – Dec 2024 | 0.0041 µg/l 11 Dec 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 11 Dec 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 11 Dec 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Dec 2024 – Dec 2024 | below 0.001 µg/l 11 Dec 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Dec 2024 – Dec 2024 | below 0.0005 µg/l 11 Dec 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Dec 2024 – Dec 2024 | below 0.006 µg/l 11 Dec 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Dec 2024 – Dec 2024 | below 0.005 µg/l 11 Dec 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Dec 2024 – Dec 2024 | below 0.004 µg/l 11 Dec 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Dec 2024 – Dec 2024 | below 0.002 µg/l 11 Dec 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.