New Dike Catchment tributary of Louth Canal
EA name: NEW DIKE CATCHMENT TRIB LOUTH CANAL (also listed as “NEW DIKE CATCHMENT (TRIB OF LOUTH CANAL) - GB104029062030”)
Environment Agency sampling point AN-NEWDIKE · 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
- 18 Sep 2026, 10:1413 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 30 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) · results completed 23 Sep 2026
- Where
- National Grid 533997, 399207As published, to the nearest 1 m. Open in a map
- River, by its own name
- New Dike Catchment
- River, by the map
- New DikePlaced on a river whose name partly matches its own, 1 m from the line.
- Next gauge downstream
- None tracedThe map stops before any gauge.
- Why it was sampled
- Environmental monitoring statutory (EU directives) (22 samples)
Monitoring (national agency policy) (8 samples)
Results here were completed a median of 3 days after the sample was taken (2 to 5 days, 11 samples).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
89.9%
Sampled 18 Sep 2026, 13 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Sep 2026, 10:14 | 89.9 | 89.9% |
| 6 Jul 2026, 10:52 | 94 | 94% |
| 3 Jun 2026, 10:42 | 112.8 | 112.8% |
| 18 May 2026, 11:26 | 118.2 | 118.2% |
| 24 Apr 2026, 09:14 | 119.8 | 119.8% |
| 12 Mar 2026, 11:16 | 94.7 | 94.7% |
| 10 Feb 2026, 10:59 | 89.1 | 89.1% |
| 8 Jan 2026, 12:37 | 85.8 | 85.8% |
| 2 Dec 2025, 08:30 | 80.5 | 80.5% |
| 5 Nov 2025, 11:02 | 85.2 | 85.2% |
| 14 Oct 2025, 12:00 | 79.2 | 79.2% |
| 23 Apr 2025, 13:05 | 136.9 | 136.9% |
| 13 Mar 2025, 09:44 | 103.6 | 103.6% |
| 5 Feb 2025, 08:07 | 96.4 | 96.4% |
| 20 Jan 2025, 09:12 | 91.8 | 91.8% |
| 3 Dec 2024, 09:20 | 83.2 | 83.2% |
| 18 Nov 2024, 11:09 | 82.4 | 82.4% |
| 17 Oct 2024, 12:34 | 85.9 | 85.9% |
| 16 Sep 2024, 12:10 | 146.2 | 146.2% |
| 19 Aug 2024, 09:21 | 80.4 | 80.4% |
| 15 Jul 2024, 09:07 | 72.6 | 72.6% |
| 24 Jun 2024, 09:43 | 109.1 | 109.1% |
| 14 May 2024, 10:15 | 123.5 | 123.5% |
| 15 Apr 2024, 11:25 | 107.8 | 107.8% |
| 18 Mar 2024, 12:09 | 95.7 | 95.7% |
| 19 Feb 2024, 09:57 | 94.1 | 94.1% |
| 15 Jan 2024, 11:55 | 94.6 | 94.6% |
| 5 Dec 2023, 12:14 | 85.4 | 85.4% |
| 20 Nov 2023, 11:13 | 82.3 | 82.3% |
| 16 Oct 2023, 12:13 | 49.3 | 49.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.89 mg/l
Sampled 18 Sep 2026, 13 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Sep 2026, 10:14 | 8.89 | 8.89 mg/l |
| 6 Jul 2026, 10:52 | 8.51 | 8.51 mg/l |
| 3 Jun 2026, 10:42 | 10.5 | 10.5 mg/l |
| 18 May 2026, 11:26 | 12.2 | 12.2 mg/l |
| 24 Apr 2026, 09:14 | 12.8 | 12.8 mg/l |
| 12 Mar 2026, 11:16 | 10.9 | 10.9 mg/l |
| 10 Feb 2026, 10:59 | 10.6 | 10.6 mg/l |
| 8 Jan 2026, 12:37 | 11.4 | 11.4 mg/l |
| 2 Dec 2025, 08:30 | 9.38 | 9.38 mg/l |
| 5 Nov 2025, 11:02 | 9.18 | 9.18 mg/l |
| 14 Oct 2025, 12:00 | 8.27 | 8.27 mg/l |
| 23 Apr 2025, 13:05 | 13.6 | 13.6 mg/l |
| 13 Mar 2025, 09:44 | 12.7 | 12.7 mg/l |
| 5 Feb 2025, 08:07 | 12.6 | 12.6 mg/l |
| 20 Jan 2025, 09:12 | 12 | 12 mg/l |
| 3 Dec 2024, 09:20 | 9.84 | 9.84 mg/l |
| 18 Nov 2024, 11:09 | 10 | 10 mg/l |
| 17 Oct 2024, 12:34 | 9.28 | 9.28 mg/l |
| 16 Sep 2024, 12:10 | 14.9 | 14.9 mg/l |
| 19 Aug 2024, 09:21 | 7.62 | 7.62 mg/l |
| 15 Jul 2024, 09:07 | 7.18 | 7.18 mg/l |
| 24 Jun 2024, 09:43 | 9.88 | 9.88 mg/l |
| 14 May 2024, 10:15 | 11.8 | 11.8 mg/l |
| 15 Apr 2024, 11:25 | 11.8 | 11.8 mg/l |
| 18 Mar 2024, 12:09 | 10.3 | 10.3 mg/l |
| 19 Feb 2024, 09:57 | 10.8 | 10.8 mg/l |
| 15 Jan 2024, 11:55 | 12.1 | 12.1 mg/l |
| 5 Dec 2023, 12:14 | 10.2 | 10.2 mg/l |
| 20 Nov 2023, 11:13 | 9.16 | 9.16 mg/l |
| 16 Oct 2023, 12:13 | 5.54 | 5.54 mg/l |
Water temperature
code 0076 · °C
15.8 °C
Sampled 18 Sep 2026, 13 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Sep 2026, 10:14 | 15.8 | 15.8 °C |
| 6 Jul 2026, 10:52 | 20.1 | 20.1 °C |
| 3 Jun 2026, 10:42 | 18.9 | 18.9 °C |
| 18 May 2026, 11:26 | 13.9 | 13.9 °C |
| 24 Apr 2026, 09:14 | 12.4 | 12.4 °C |
| 12 Mar 2026, 11:16 | 9.1 | 9.1 °C |
| 10 Feb 2026, 10:59 | 7.7 | 7.7 °C |
| 8 Jan 2026, 12:37 | 3.5 | 3.5 °C |
| 2 Dec 2025, 08:30 | 8.6 | 8.6 °C |
| 5 Nov 2025, 11:02 | 11.9 | 11.9 °C |
| 14 Oct 2025, 12:00 | 13.3 | 13.3 °C |
| 23 Apr 2025, 13:05 | 15.5 | 15.5 °C |
| 13 Mar 2025, 09:44 | 6.7 | 6.7 °C |
| 5 Feb 2025, 08:07 | 4.2 | 4.2 °C |
| 20 Jan 2025, 09:12 | 4 | 4 °C |
| 3 Dec 2024, 09:20 | 8 | 8 °C |
| 18 Nov 2024, 11:09 | 6.8 | 6.8 °C |
| 17 Oct 2024, 12:34 | 11.8 | 11.8 °C |
| 16 Sep 2024, 12:10 | 14.3 | 14.3 °C |
| 19 Aug 2024, 09:21 | 17.8 | 17.8 °C |
| 15 Jul 2024, 09:07 | 15.8 | 15.8 °C |
| 24 Jun 2024, 09:43 | 20.1 | 20.1 °C |
| 14 May 2024, 10:15 | 17.3 | 17.3 °C |
| 15 Apr 2024, 11:25 | 11.1 | 11.1 °C |
| 18 Mar 2024, 12:09 | 11.8 | 11.8 °C |
| 19 Feb 2024, 09:57 | 9.3 | 9.3 °C |
| 15 Jan 2024, 11:55 | 5 | 5 °C |
| 5 Dec 2023, 12:14 | 7.4 | 7.4 °C |
| 20 Nov 2023, 11:13 | 10.5 | 10.5 °C |
| 16 Oct 2023, 12:13 | 10.1 | 10.1 °C |
pH
code 0061
7.85
Sampled 18 Sep 2026, 13 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Sep 2026, 10:14 | 7.85 | 7.85 |
| 6 Jul 2026, 10:52 | 7.67 | 7.67 |
| 3 Jun 2026, 10:42 | 7.89 | 7.89 |
| 18 May 2026, 11:26 | 8.05 | 8.05 |
| 24 Apr 2026, 09:14 | 8.29 | 8.29 |
| 12 Mar 2026, 11:16 | 8.16 | 8.16 |
| 10 Feb 2026, 10:59 | 7.86 | 7.86 |
| 8 Jan 2026, 12:37 | 8.14 | 8.14 |
| 2 Dec 2025, 08:30 | 7.73 | 7.73 |
| 5 Nov 2025, 11:02 | 7.84 | 7.84 |
| 14 Oct 2025, 12:00 | 7.7 | 7.7 |
| 23 Apr 2025, 13:05 | 7.96 | 7.96 |
| 13 Mar 2025, 09:44 | 8.26 | 8.26 |
| 5 Feb 2025, 08:07 | 8.24 | 8.24 |
| 20 Jan 2025, 09:12 | 7.94 | 7.94 |
| 3 Dec 2024, 09:20 | 8.02 | 8.02 |
| 18 Nov 2024, 11:09 | 8.01 | 8.01 |
| 17 Oct 2024, 12:34 | 7.85 | 7.85 |
| 16 Sep 2024, 12:10 | 8.43 | 8.43 |
| 19 Aug 2024, 09:21 | 7.87 | 7.87 |
| 15 Jul 2024, 09:07 | 7.86 | 7.86 |
| 24 Jun 2024, 09:43 | 7.67 | 7.67 |
| 14 May 2024, 10:15 | 8 | 8 |
| 15 Apr 2024, 11:25 | 8.12 | 8.12 |
| 18 Mar 2024, 12:09 | 8.11 | 8.11 |
| 19 Feb 2024, 09:57 | 8.04 | 8.04 |
| 15 Jan 2024, 11:55 | 8.09 | 8.09 |
| 5 Dec 2023, 12:14 | 7.85 | 7.85 |
| 20 Nov 2023, 11:13 | 7.91 | 7.91 |
| 16 Oct 2023, 12:13 | 7.67 | 7.67 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 18 Sep 2026, 13 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Sep 2026, 10:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Jul 2026, 10:52 | 0.049 | 0.049 mg/l |
| 3 Jun 2026, 10:42 | 0.048 | 0.048 mg/l |
| 18 May 2026, 11:26 | 0.039 | 0.039 mg/l |
| 24 Apr 2026, 09:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Mar 2026, 11:16 | 0.14 | 0.14 mg/l |
| 10 Feb 2026, 10:59 | 0.12 | 0.12 mg/l |
| 8 Jan 2026, 12:37 | 0.98 | 0.98 mg/l |
| 2 Dec 2025, 08:30 | 0.14 | 0.14 mg/l |
| 5 Nov 2025, 11:02 | 0.042 | 0.042 mg/l |
| 14 Oct 2025, 12:00 | 0.041 | 0.041 mg/l |
| 13 Mar 2025, 09:44 | 0.043 | 0.043 mg/l |
| 5 Feb 2025, 08:07 | 0.19 | 0.19 mg/l |
| 20 Jan 2025, 09:12 | 0.073 | 0.073 mg/l |
| 3 Dec 2024, 09:20 | 0.07 | 0.07 mg/l |
| 18 Nov 2024, 11:09 | 0.056 | 0.056 mg/l |
| 17 Oct 2024, 12:34 | 0.1 | 0.1 mg/l |
| 16 Sep 2024, 12:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Aug 2024, 09:21 | 0.073 | 0.073 mg/l |
| 15 Jul 2024, 09:07 | 0.12 | 0.12 mg/l |
| 24 Jun 2024, 09:43 | 0.076 | 0.076 mg/l |
| 14 May 2024, 10:15 | 0.088 | 0.088 mg/l |
| 15 Apr 2024, 11:25 | 0.051 | 0.051 mg/l |
| 18 Mar 2024, 12:09 | 0.18 | 0.18 mg/l |
| 19 Feb 2024, 09:57 | 0.06 | 0.06 mg/l |
| 15 Jan 2024, 11:55 | 0.078 | 0.078 mg/l |
| 5 Dec 2023, 12:14 | 0.058 | 0.058 mg/l |
| 20 Nov 2023, 11:13 | 0.057 | 0.057 mg/l |
| 16 Oct 2023, 12:13 | 0.1 | 0.1 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
5.96 mg/l
Sampled 18 Sep 2026, 13 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Sep 2026, 10:14 | 5.96 | 5.96 mg/l |
| 6 Jul 2026, 10:52 | 4.52 | 4.52 mg/l |
| 3 Jun 2026, 10:42 | 6.3 | 6.3 mg/l |
| 18 May 2026, 11:26 | 10.9 | 10.9 mg/l |
| 24 Apr 2026, 09:14 | 6.96 | 6.96 mg/l |
| 12 Mar 2026, 11:16 | 10.9 | 10.9 mg/l |
| 10 Feb 2026, 10:59 | 9.95 | 9.95 mg/l |
| 8 Jan 2026, 12:37 | 10.9 | 10.9 mg/l |
| 2 Dec 2025, 08:30 | 12.9 | 12.9 mg/l |
| 5 Nov 2025, 11:02 | 7.39 | 7.39 mg/l |
| 14 Oct 2025, 12:00 | 7.66 | 7.66 mg/l |
| 13 Mar 2025, 09:44 | 8.76 | 8.76 mg/l |
| 5 Feb 2025, 08:07 | 7.07 | 7.07 mg/l |
| 20 Jan 2025, 09:12 | 6.37 | 6.37 mg/l |
| 3 Dec 2024, 09:20 | 8.64 | 8.64 mg/l |
| 18 Nov 2024, 11:09 | 9.9 | 9.9 mg/l |
| 17 Oct 2024, 12:34 | 7.33 | 7.33 mg/l |
| 16 Sep 2024, 12:10 | 3.26 | 3.26 mg/l |
| 19 Aug 2024, 09:21 | 7.64 | 7.64 mg/l |
| 15 Jul 2024, 09:07 | 5.09 | 5.09 mg/l |
| 24 Jun 2024, 09:43 | 1.85 | 1.85 mg/l |
| 14 May 2024, 10:15 | 9.05 | 9.05 mg/l |
| 15 Apr 2024, 11:25 | 9.16 | 9.16 mg/l |
| 18 Mar 2024, 12:09 | 9.54 | 9.54 mg/l |
| 19 Feb 2024, 09:57 | 8.78 | 8.78 mg/l |
| 15 Jan 2024, 11:55 | 9.67 | 9.67 mg/l |
| 5 Dec 2023, 12:14 | 7.38 | 7.38 mg/l |
| 20 Nov 2023, 11:13 | 9.55 | 9.55 mg/l |
| 16 Oct 2023, 12:13 | 11.9 | 11.9 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.01 mg/l (not detected above this)
Sampled 18 Sep 2026, 13 days ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Sep 2026, 10:14 | <0.01 | below 0.01 mg/l (not detected above this) |
| 6 Jul 2026, 10:52 | <0.01 | below 0.01 mg/l (not detected above this) |
| 3 Jun 2026, 10:42 | <0.01 | below 0.01 mg/l (not detected above this) |
| 18 May 2026, 11:26 | <0.01 | below 0.01 mg/l (not detected above this) |
| 24 Apr 2026, 09:14 | <0.01 | below 0.01 mg/l (not detected above this) |
| 12 Mar 2026, 11:16 | 0.035 | 0.035 mg/l |
| 10 Feb 2026, 10:59 | 0.048 | 0.048 mg/l |
| 8 Jan 2026, 12:37 | 0.06 | 0.06 mg/l |
| 2 Dec 2025, 08:30 | 0.073 | 0.073 mg/l |
| 5 Nov 2025, 11:02 | 0.017 | 0.017 mg/l |
| 14 Oct 2025, 12:00 | 0.015 | 0.015 mg/l |
| 13 Mar 2025, 09:44 | 0.018 | 0.018 mg/l |
| 5 Feb 2025, 08:07 | 0.045 | 0.045 mg/l |
| 20 Jan 2025, 09:12 | 0.039 | 0.039 mg/l |
| 3 Dec 2024, 09:20 | 0.04 | 0.04 mg/l |
| 18 Nov 2024, 11:09 | 0.058 | 0.058 mg/l |
| 17 Oct 2024, 12:34 | 0.03 | 0.03 mg/l |
| 16 Sep 2024, 12:10 | <0.01 | below 0.01 mg/l (not detected above this) |
| 19 Aug 2024, 09:21 | 0.041 | 0.041 mg/l |
| 15 Jul 2024, 09:07 | 0.041 | 0.041 mg/l |
| 24 Jun 2024, 09:43 | <0.01 | below 0.01 mg/l (not detected above this) |
| 14 May 2024, 10:15 | 0.028 | 0.028 mg/l |
| 15 Apr 2024, 11:25 | 0.029 | 0.029 mg/l |
| 18 Mar 2024, 12:09 | 0.042 | 0.042 mg/l |
| 19 Feb 2024, 09:57 | 0.051 | 0.051 mg/l |
| 15 Jan 2024, 11:55 | 0.074 | 0.074 mg/l |
| 5 Dec 2023, 12:14 | 0.095 | 0.095 mg/l |
| 20 Nov 2023, 11:13 | 0.12 | 0.12 mg/l |
| 16 Oct 2023, 12:13 | 0.15 | 0.15 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
632 µS/cm
Sampled 18 Sep 2026, 13 days ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 18 Sep 2026, 10:14 | 632 | 632 µS/cm |
| 6 Jul 2026, 10:52 | 568 | 568 µS/cm |
| 3 Jun 2026, 10:42 | 553 | 553 µS/cm |
| 18 May 2026, 11:26 | 643 | 643 µS/cm |
| 24 Apr 2026, 09:14 | 656 | 656 µS/cm |
| 12 Mar 2026, 11:16 | 704 | 704 µS/cm |
| 10 Feb 2026, 10:59 | 785 | 785 µS/cm |
| 8 Jan 2026, 12:37 | 936 | 936 µS/cm |
| 2 Dec 2025, 08:30 | 774 | 774 µS/cm |
| 5 Nov 2025, 11:02 | 657 | 657 µS/cm |
| 14 Oct 2025, 12:00 | 659 | 659 µS/cm |
| 23 Apr 2025, 13:05 | 634 | 634 µS/cm |
| 13 Mar 2025, 09:44 | 712 | 712 µS/cm |
| 5 Feb 2025, 08:07 | 1040 | 1040 µS/cm |
| 20 Jan 2025, 09:12 | 1024 | 1024 µS/cm |
| 3 Dec 2024, 09:20 | 988 | 988 µS/cm |
| 18 Nov 2024, 11:09 | 700 | 700 µS/cm |
| 17 Oct 2024, 12:34 | 748 | 748 µS/cm |
| 16 Sep 2024, 12:10 | 541 | 541 µS/cm |
| 19 Aug 2024, 09:21 | 632 | 632 µS/cm |
| 15 Jul 2024, 09:07 | 669 | 669 µS/cm |
| 24 Jun 2024, 09:43 | 580 | 580 µS/cm |
| 14 May 2024, 10:15 | 672 | 672 µS/cm |
| 15 Apr 2024, 11:25 | 689 | 689 µS/cm |
| 18 Mar 2024, 12:09 | 659 | 659 µS/cm |
| 19 Feb 2024, 09:57 | 728 | 728 µS/cm |
| 15 Jan 2024, 11:55 | 876 | 876 µS/cm |
| 5 Dec 2023, 12:14 | 645 | 645 µS/cm |
| 20 Nov 2023, 11:13 | 812 | 812 µS/cm |
| 16 Oct 2023, 12:13 | 671 | 671 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 | 30 | Oct 2023 – Sep 2026 | 89.9% 18 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 30 | Oct 2023 – Sep 2026 | 8.89 mg/l 18 Sep 2026 |
| Temperature of Water 0076 | River water | 30 | Oct 2023 – Sep 2026 | 15.8 °C 18 Sep 2026 |
| pH 0061 | River water | 30 | Oct 2023 – Sep 2026 | 7.85 18 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 29 | Oct 2023 – Sep 2026 | below 0.03 mg/l 18 Sep 2026 |
| Nitrate as N 0117 | River water | 29 | Oct 2023 – Sep 2026 | 5.96 mg/l 18 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 29 | Oct 2023 – Sep 2026 | below 0.01 mg/l 18 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 30 | Oct 2023 – Sep 2026 | 632 µS/cm 18 Sep 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Nov 2024 – Nov 2024 | below 0.004 µg/l 18 Nov 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 18 Nov 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 29 | Oct 2023 – Sep 2026 | 200 mg/l 18 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 29 | Oct 2023 – Sep 2026 | below 0.0006 mg/l 18 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – Mar 2025 | 2.1 mg/l 13 Mar 2025 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Nitrite as N 0118 | River water | 29 | Oct 2023 – Sep 2026 | 0.038 mg/l 18 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 29 | Oct 2023 – Sep 2026 | 6 mg/l 18 Sep 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Nov 2024 – Nov 2024 | 0.0011 µg/l 18 Nov 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Nov 2024 – Nov 2024 | 0.00056 µg/l 18 Nov 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 18 Nov 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Nov 2024 – Nov 2024 | 0.0006 µg/l 18 Nov 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Nov 2024 – Nov 2024 | 0.00089 µg/l 18 Nov 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Nov 2024 – Nov 2024 | below 0.001 µg/l 18 Nov 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Nov 2024 – Nov 2024 | below 0.0005 µg/l 18 Nov 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Nov 2024 – Nov 2024 | 0.0012 µg/l 18 Nov 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Nov 2024 – Nov 2024 | below 0.006 µg/l 18 Nov 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Nov 2024 – Nov 2024 | below 0.005 µg/l 18 Nov 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Nov 2024 – Nov 2024 | below 0.004 µg/l 18 Nov 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Nov 2024 – Nov 2024 | below 0.002 µg/l 18 Nov 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.