Stort above Twyford Mill Lock
EA name: STORT ABOVE TWYFORD MILL LOCK
Environment Agency sampling point TH-PLER0143 · 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
- 17 Aug 2026, 10:5945 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 33 since 2 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 549419, 219270As 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, 2 m from the line.
- Next gauge downstream
- Sawbridgeworth On the River Stort · 5.5 km along the river (the path rests on a repair to the map)
- Nearest gauge upstream
- Bishops Stortford, Grange Paddocks On the River Stort · 3.8 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (33 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
82.3%
Sampled 17 Aug 2026, 45 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 10:59 | 82.3 | 82.3% |
| 14 Jul 2026, 08:31 | 106.2 | 106.2% |
| 4 Jun 2026, 09:53 | 60.1 | 60.1% |
| 15 May 2026, 13:39 | 101.7 | 101.7% |
| 27 Apr 2026, 12:13 | 125.2 | 125.2% |
| 2 Mar 2026, 13:05 | 91.2 | 91.2% |
| 10 Feb 2026, 12:08 | 97.6 | 97.6% |
| 19 Jan 2026, 11:53 | 87.1 | 87.1% |
| 4 Dec 2025, 12:04 | 65 | 65% |
| 6 Nov 2025, 11:57 | 51.1 | 51.1% |
| 13 Oct 2025, 11:14 | 72.3 | 72.3% |
| 4 Sep 2025, 13:53 | 71.6 | 71.6% |
| 18 Aug 2025, 12:36 | 89.1 | 89.1% |
| 3 Jul 2025, 14:06 | 99.6 | 99.6% |
| 26 Jun 2025, 10:44 | 105.9 | 105.9% |
| 21 May 2025, 11:10 | 106 | 106% |
| 4 Apr 2025, 09:27 | 108.7 | 108.7% |
| 7 Mar 2025, 10:54 | 92.5 | 92.5% |
| 7 Feb 2025, 10:58 | 85.8 | 85.8% |
| 23 Jan 2025, 11:29 | 83.3 | 83.3% |
| 10 Dec 2024, 09:50 | 92.1 | 92.1% |
| 14 Nov 2024, 09:13 | 71.6 | 71.6% |
| 7 Oct 2024, 10:54 | 74.3 | 74.3% |
| 9 Sep 2024, 13:20 | 71.5 | 71.5% |
| 2 Aug 2024, 10:54 | 105.1 | 105.1% |
| 11 Jul 2024, 12:07 | 77 | 77% |
| 5 Jun 2024, 11:29 | 91.3 | 91.3% |
| 5 Mar 2024, 12:08 | 91.1 | 91.1% |
| 9 Feb 2024, 11:55 | 93.4 | 93.4% |
| 15 Jan 2024, 12:14 | 88 | 88% |
| 1 Dec 2023, 09:37 | 82.2 | 82.2% |
| 3 Nov 2023, 08:58 | 88.6 | 88.6% |
| 2 Oct 2023, 10:34 | 57.3 | 57.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.52 mg/l
Sampled 17 Aug 2026, 45 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 10:59 | 7.52 | 7.52 mg/l |
| 14 Jul 2026, 08:31 | 9.65 | 9.65 mg/l |
| 4 Jun 2026, 09:53 | 5.94 | 5.94 mg/l |
| 15 May 2026, 13:39 | 11.1 | 11.1 mg/l |
| 27 Apr 2026, 12:13 | 13.1 | 13.1 mg/l |
| 2 Mar 2026, 13:05 | 10.1 | 10.1 mg/l |
| 10 Feb 2026, 12:08 | 11.2 | 11.2 mg/l |
| 19 Jan 2026, 11:53 | 10.4 | 10.4 mg/l |
| 4 Dec 2025, 12:04 | 7.72 | 7.72 mg/l |
| 6 Nov 2025, 11:57 | 5.51 | 5.51 mg/l |
| 13 Oct 2025, 11:14 | 7.42 | 7.42 mg/l |
| 4 Sep 2025, 13:53 | 6.8 | 6.8 mg/l |
| 18 Aug 2025, 12:36 | 8.38 | 8.38 mg/l |
| 3 Jul 2025, 14:06 | 9.07 | 9.07 mg/l |
| 26 Jun 2025, 10:44 | 9.9 | 9.9 mg/l |
| 21 May 2025, 11:10 | 10.9 | 10.9 mg/l |
| 4 Apr 2025, 09:27 | 11.9 | 11.9 mg/l |
| 7 Mar 2025, 10:54 | 11 | 11 mg/l |
| 7 Feb 2025, 10:58 | 10.9 | 10.9 mg/l |
| 23 Jan 2025, 11:29 | 10.2 | 10.2 mg/l |
| 10 Dec 2024, 09:50 | 11.1 | 11.1 mg/l |
| 14 Nov 2024, 09:13 | 8.24 | 8.24 mg/l |
| 7 Oct 2024, 10:54 | 7.97 | 7.97 mg/l |
| 9 Sep 2024, 13:20 | 7.14 | 7.14 mg/l |
| 2 Aug 2024, 10:54 | 9.55 | 9.55 mg/l |
| 11 Jul 2024, 12:07 | 7.58 | 7.58 mg/l |
| 5 Jun 2024, 11:29 | 9.41 | 9.41 mg/l |
| 5 Mar 2024, 12:08 | 10.9 | 10.9 mg/l |
| 9 Feb 2024, 11:55 | 10.9 | 10.9 mg/l |
| 15 Jan 2024, 12:14 | 11.1 | 11.1 mg/l |
| 1 Dec 2023, 09:37 | 10.8 | 10.8 mg/l |
| 3 Nov 2023, 08:58 | 10 | 10 mg/l |
| 2 Oct 2023, 10:34 | 5.68 | 5.68 mg/l |
Water temperature
code 0076 · °C
19.6 °C
Sampled 17 Aug 2026, 45 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 10:59 | 19.6 | 19.6 °C |
| 14 Jul 2026, 08:31 | 19.9 | 19.9 °C |
| 4 Jun 2026, 09:53 | 15.8 | 15.8 °C |
| 15 May 2026, 13:39 | 11.5 | 11.5 °C |
| 27 Apr 2026, 12:13 | 13.2 | 13.2 °C |
| 2 Mar 2026, 13:05 | 10.9 | 10.9 °C |
| 10 Feb 2026, 12:08 | 9.2 | 9.2 °C |
| 19 Jan 2026, 11:53 | 7.5 | 7.5 °C |
| 4 Dec 2025, 12:04 | 7.8 | 7.8 °C |
| 6 Nov 2025, 11:57 | 11.9 | 11.9 °C |
| 13 Oct 2025, 11:14 | 14.1 | 14.1 °C |
| 4 Sep 2025, 13:53 | 17.7 | 17.7 °C |
| 18 Aug 2025, 12:36 | 18.2 | 18.2 °C |
| 3 Jul 2025, 14:06 | 19.8 | 19.8 °C |
| 26 Jun 2025, 10:44 | 18.5 | 18.5 °C |
| 21 May 2025, 11:10 | 13.8 | 13.8 °C |
| 4 Apr 2025, 09:27 | 11.2 | 11.2 °C |
| 7 Mar 2025, 10:54 | 7.6 | 7.6 °C |
| 7 Feb 2025, 10:58 | 5.2 | 5.2 °C |
| 23 Jan 2025, 11:29 | 6.7 | 6.7 °C |
| 10 Dec 2024, 09:50 | 7.1 | 7.1 °C |
| 14 Nov 2024, 09:13 | 9.1 | 9.1 °C |
| 7 Oct 2024, 10:54 | 12.1 | 12.1 °C |
| 9 Sep 2024, 13:20 | 15.3 | 15.3 °C |
| 2 Aug 2024, 10:54 | 19.9 | 19.9 °C |
| 11 Jul 2024, 12:07 | 16 | 16 °C |
| 5 Jun 2024, 11:29 | 13.9 | 13.9 °C |
| 5 Mar 2024, 12:08 | 7.7 | 7.7 °C |
| 9 Feb 2024, 11:55 | 8.5 | 8.5 °C |
| 15 Jan 2024, 12:14 | 5.4 | 5.4 °C |
| 1 Dec 2023, 09:37 | 4 | 4 °C |
| 3 Nov 2023, 08:58 | 9.9 | 9.9 °C |
| 2 Oct 2023, 10:34 | 15.7 | 15.7 °C |
pH
code 0061
7.76
Sampled 17 Aug 2026, 45 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 10:59 | 7.76 | 7.76 |
| 14 Jul 2026, 08:31 | 7.98 | 7.98 |
| 4 Jun 2026, 09:53 | 7.7 | 7.7 |
| 15 May 2026, 13:39 | 8.05 | 8.05 |
| 27 Apr 2026, 12:13 | 7.94 | 7.94 |
| 2 Mar 2026, 13:05 | 8.11 | 8.11 |
| 10 Feb 2026, 12:08 | 8.15 | 8.15 |
| 19 Jan 2026, 11:53 | 7.85 | 7.85 |
| 4 Dec 2025, 12:04 | 7.66 | 7.66 |
| 6 Nov 2025, 11:57 | 7.6 | 7.6 |
| 13 Oct 2025, 11:14 | 7.96 | 7.96 |
| 4 Sep 2025, 13:53 | 7.71 | 7.71 |
| 18 Aug 2025, 12:36 | 7.83 | 7.83 |
| 3 Jul 2025, 14:06 | 7.83 | 7.83 |
| 26 Jun 2025, 10:44 | 7.88 | 7.88 |
| 21 May 2025, 11:10 | 7.79 | 7.79 |
| 4 Apr 2025, 09:27 | 7.91 | 7.91 |
| 7 Mar 2025, 10:54 | 7.79 | 7.79 |
| 7 Feb 2025, 10:58 | 7.79 | 7.79 |
| 23 Jan 2025, 11:29 | 7.74 | 7.74 |
| 10 Dec 2024, 09:50 | 7.97 | 7.97 |
| 14 Nov 2024, 09:13 | 7.52 | 7.52 |
| 7 Oct 2024, 10:54 | 7.75 | 7.75 |
| 9 Sep 2024, 13:20 | 7.61 | 7.61 |
| 2 Aug 2024, 10:54 | 7.99 | 7.99 |
| 11 Jul 2024, 12:07 | 7.75 | 7.75 |
| 5 Jun 2024, 11:29 | 7.76 | 7.76 |
| 5 Mar 2024, 12:08 | 7.75 | 7.75 |
| 9 Feb 2024, 11:55 | 8.07 | 8.07 |
| 15 Jan 2024, 12:14 | 7.98 | 7.98 |
| 1 Dec 2023, 09:37 | 7.83 | 7.83 |
| 3 Nov 2023, 08:58 | 7.87 | 7.87 |
| 2 Oct 2023, 10:34 | 7.55 | 7.55 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.06 mg/l
Sampled 17 Aug 2026, 45 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 10:59 | 0.06 | 0.06 mg/l |
| 14 Jul 2026, 08:31 | 0.063 | 0.063 mg/l |
| 4 Jun 2026, 09:53 | 0.15 | 0.15 mg/l |
| 15 May 2026, 13:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Apr 2026, 12:13 | 0.046 | 0.046 mg/l |
| 2 Mar 2026, 13:05 | 0.17 | 0.17 mg/l |
| 10 Feb 2026, 12:08 | 0.18 | 0.18 mg/l |
| 19 Jan 2026, 11:53 | 0.093 | 0.093 mg/l |
| 4 Dec 2025, 12:04 | 0.063 | 0.063 mg/l |
| 6 Nov 2025, 11:57 | 0.048 | 0.048 mg/l |
| 13 Oct 2025, 11:14 | 0.06 | 0.06 mg/l |
| 4 Sep 2025, 13:53 | 0.18 | 0.18 mg/l |
| 18 Aug 2025, 12:36 | 0.055 | 0.055 mg/l |
| 3 Jul 2025, 14:06 | 0.032 | 0.032 mg/l |
| 26 Jun 2025, 10:44 | 0.055 | 0.055 mg/l |
| 21 May 2025, 11:10 | 0.042 | 0.042 mg/l |
| 4 Apr 2025, 09:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Mar 2025, 10:54 | 0.031 | 0.031 mg/l |
| 7 Feb 2025, 10:58 | 0.085 | 0.085 mg/l |
| 23 Jan 2025, 11:29 | 0.088 | 0.088 mg/l |
| 10 Dec 2024, 09:50 | 0.066 | 0.066 mg/l |
| 14 Nov 2024, 09:13 | 0.045 | 0.045 mg/l |
| 7 Oct 2024, 10:54 | 0.044 | 0.044 mg/l |
| 9 Sep 2024, 13:20 | 0.053 | 0.053 mg/l |
| 2 Aug 2024, 10:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Jul 2024, 12:07 | 0.29 | 0.29 mg/l |
| 5 Jun 2024, 11:29 | 0.044 | 0.044 mg/l |
| 5 Mar 2024, 12:08 | 0.048 | 0.048 mg/l |
| 9 Feb 2024, 11:55 | 0.17 | 0.17 mg/l |
| 15 Jan 2024, 12:14 | 0.049 | 0.049 mg/l |
| 1 Dec 2023, 09:37 | 0.038 | 0.038 mg/l |
| 3 Nov 2023, 08:58 | 0.039 | 0.039 mg/l |
| 2 Oct 2023, 10:34 | 0.05 | 0.05 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.31 mg/l
Sampled 17 Aug 2026, 45 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 10:59 | 9.31 | 9.31 mg/l |
| 14 Jul 2026, 08:31 | 9.78 | 9.78 mg/l |
| 4 Jun 2026, 09:53 | 8.21 | 8.21 mg/l |
| 15 May 2026, 13:39 | 9.03 | 9.03 mg/l |
| 27 Apr 2026, 12:13 | 9.65 | 9.65 mg/l |
| 2 Mar 2026, 13:05 | 9.72 | 9.72 mg/l |
| 10 Feb 2026, 12:08 | 10.9 | 10.9 mg/l |
| 19 Jan 2026, 11:53 | 13 | 13 mg/l |
| 4 Dec 2025, 12:04 | 8.52 | 8.52 mg/l |
| 6 Nov 2025, 11:57 | 9.88 | 9.88 mg/l |
| 13 Oct 2025, 11:14 | 16 | 16 mg/l |
| 4 Sep 2025, 13:53 | 12.9 | 12.9 mg/l |
| 18 Aug 2025, 12:36 | 9.62 | 9.62 mg/l |
| 3 Jul 2025, 14:06 | 14.9 | 14.9 mg/l |
| 26 Jun 2025, 10:44 | 9.74 | 9.74 mg/l |
| 21 May 2025, 11:10 | 9.95 | 9.95 mg/l |
| 4 Apr 2025, 09:27 | 9.97 | 9.97 mg/l |
| 7 Mar 2025, 10:54 | 9.85 | 9.85 mg/l |
| 7 Feb 2025, 10:58 | 9.93 | 9.93 mg/l |
| 23 Jan 2025, 11:29 | 10.9 | 10.9 mg/l |
| 10 Dec 2024, 09:50 | 11 | 11 mg/l |
| 14 Nov 2024, 09:13 | 9.96 | 9.96 mg/l |
| 7 Oct 2024, 10:54 | 9.75 | 9.75 mg/l |
| 9 Sep 2024, 13:20 | 9.33 | 9.33 mg/l |
| 2 Aug 2024, 10:54 | 16.9 | 16.9 mg/l |
| 11 Jul 2024, 12:07 | 5.51 | 5.51 mg/l |
| 5 Jun 2024, 11:29 | 8.17 | 8.17 mg/l |
| 5 Mar 2024, 12:08 | 7.48 | 7.48 mg/l |
| 9 Feb 2024, 11:55 | 7.95 | 7.95 mg/l |
| 15 Jan 2024, 12:14 | 8.77 | 8.77 mg/l |
| 1 Dec 2023, 09:37 | 11 | 11 mg/l |
| 3 Nov 2023, 08:58 | 12 | 12 mg/l |
| 2 Oct 2023, 10:34 | 6.75 | 6.75 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.57 mg/l
Sampled 17 Aug 2026, 45 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 10:59 | 0.57 | 0.57 mg/l |
| 14 Jul 2026, 08:31 | 0.22 | 0.22 mg/l |
| 4 Jun 2026, 09:53 | 0.19 | 0.19 mg/l |
| 15 May 2026, 13:39 | 0.2 | 0.2 mg/l |
| 27 Apr 2026, 12:13 | 0.1 | 0.1 mg/l |
| 2 Mar 2026, 13:05 | 0.2 | 0.2 mg/l |
| 10 Feb 2026, 12:08 | 0.11 | 0.11 mg/l |
| 19 Jan 2026, 11:53 | 0.11 | 0.11 mg/l |
| 4 Dec 2025, 12:04 | 0.18 | 0.18 mg/l |
| 6 Nov 2025, 11:57 | 0.14 | 0.14 mg/l |
| 13 Oct 2025, 11:14 | 0.37 | 0.37 mg/l |
| 4 Sep 2025, 13:53 | 0.31 | 0.31 mg/l |
| 18 Aug 2025, 12:36 | 0.1 | 0.1 mg/l |
| 3 Jul 2025, 14:06 | 0.57 | 0.57 mg/l |
| 26 Jun 2025, 10:44 | 0.1 | 0.1 mg/l |
| 21 May 2025, 11:10 | 0.033 | 0.033 mg/l |
| 4 Apr 2025, 09:27 | 0.027 | 0.027 mg/l |
| 7 Mar 2025, 10:54 | 0.061 | 0.061 mg/l |
| 7 Feb 2025, 10:58 | 0.08 | 0.08 mg/l |
| 23 Jan 2025, 11:29 | 0.095 | 0.095 mg/l |
| 10 Dec 2024, 09:50 | 0.093 | 0.093 mg/l |
| 14 Nov 2024, 09:13 | 0.12 | 0.12 mg/l |
| 7 Oct 2024, 10:54 | 0.24 | 0.24 mg/l |
| 9 Sep 2024, 13:20 | 0.17 | 0.17 mg/l |
| 2 Aug 2024, 10:54 | 0.46 | 0.46 mg/l |
| 11 Jul 2024, 12:07 | 0.19 | 0.19 mg/l |
| 5 Jun 2024, 11:29 | 0.16 | 0.16 mg/l |
| 5 Mar 2024, 12:08 | 0.1 | 0.1 mg/l |
| 9 Feb 2024, 11:55 | 0.11 | 0.11 mg/l |
| 15 Jan 2024, 12:14 | 0.13 | 0.13 mg/l |
| 1 Dec 2023, 09:37 | 0.11 | 0.11 mg/l |
| 3 Nov 2023, 08:58 | 0.12 | 0.12 mg/l |
| 2 Oct 2023, 10:34 | 0.17 | 0.17 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
843 µS/cm
Sampled 17 Aug 2026, 45 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Aug 2026, 10:59 | 843 | 843 µS/cm |
| 14 Jul 2026, 08:31 | 803 | 803 µS/cm |
| 4 Jun 2026, 09:53 | 754 | 754 µS/cm |
| 15 May 2026, 13:39 | 800 | 800 µS/cm |
| 27 Apr 2026, 12:13 | 784 | 784 µS/cm |
| 2 Mar 2026, 13:05 | 777 | 777 µS/cm |
| 10 Feb 2026, 12:08 | 758 | 758 µS/cm |
| 19 Jan 2026, 11:53 | 748 | 748 µS/cm |
| 4 Dec 2025, 12:04 | 850 | 850 µS/cm |
| 6 Nov 2025, 11:57 | 825 | 825 µS/cm |
| 13 Oct 2025, 11:14 | 1088 | 1088 µS/cm |
| 4 Sep 2025, 13:53 | 892 | 892 µS/cm |
| 18 Aug 2025, 12:36 | 798 | 798 µS/cm |
| 3 Jul 2025, 14:06 | 911 | 911 µS/cm |
| 26 Jun 2025, 10:44 | 805 | 805 µS/cm |
| 21 May 2025, 11:10 | 789 | 789 µS/cm |
| 4 Apr 2025, 09:27 | 785 | 785 µS/cm |
| 7 Mar 2025, 10:54 | 796 | 796 µS/cm |
| 7 Feb 2025, 10:58 | 803 | 803 µS/cm |
| 23 Jan 2025, 11:29 | 836 | 836 µS/cm |
| 10 Dec 2024, 09:50 | 642 | 642 µS/cm |
| 14 Nov 2024, 09:13 | 813 | 813 µS/cm |
| 7 Oct 2024, 10:54 | 747 | 747 µS/cm |
| 9 Sep 2024, 13:20 | 741 | 741 µS/cm |
| 2 Aug 2024, 10:54 | 964 | 964 µS/cm |
| 11 Jul 2024, 12:07 | 686 | 686 µS/cm |
| 5 Jun 2024, 11:29 | 795 | 795 µS/cm |
| 5 Mar 2024, 12:08 | 775 | 775 µS/cm |
| 9 Feb 2024, 11:55 | 522 | 522 µS/cm |
| 15 Jan 2024, 12:14 | 812 | 812 µS/cm |
| 1 Dec 2023, 09:37 | 758 | 758 µS/cm |
| 3 Nov 2023, 08:58 | 539 | 539 µS/cm |
| 2 Oct 2023, 10:34 | 689 | 689 µS/cm |
Everything measured here
12 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 12 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 33 | Oct 2023 – Aug 2026 | 82.3% 17 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 33 | Oct 2023 – Aug 2026 | 7.52 mg/l 17 Aug 2026 |
| Temperature of Water 0076 | River water | 33 | Oct 2023 – Aug 2026 | 19.6 °C 17 Aug 2026 |
| pH 0061 | River water | 33 | Oct 2023 – Aug 2026 | 7.76 17 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 33 | Oct 2023 – Aug 2026 | 0.06 mg/l 17 Aug 2026 |
| Nitrate as N 0117 | River water | 33 | Oct 2023 – Aug 2026 | 9.31 mg/l 17 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 33 | Oct 2023 – Aug 2026 | 0.57 mg/l 17 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 33 | Oct 2023 – Aug 2026 | 843 µS/cm 17 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 33 | Oct 2023 – Aug 2026 | 260 mg/l 17 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 33 | Oct 2023 – Aug 2026 | 0.00128 mg/l 17 Aug 2026 |
| Nitrite as N 0118 | River water | 33 | Oct 2023 – Aug 2026 | 0.094 mg/l 17 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 33 | Oct 2023 – Aug 2026 | 9.4 mg/l 17 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.