Tees at Yarm Road Bridge
EA name: TEES AT YARM ROAD BRIDGE
Environment Agency sampling point NE-45400523 · 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
- 3 Sep 2026, 14:1228 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 Planned investigation (local monitoring)
- Where
- National Grid 441797, 513165As published, to the nearest 1 m. Open in a map
- River, by its own name
- Tees
- River, by the map
- River TeesPlaced on the river its name gives, 5 m from the line.
- Next gauge downstream
- Stockton On the River Tees · 12 km along the riverBeside Yarm: too close to say above or below.
- Nearest gauge upstream
- Low Moor On the River Tees · 12 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (25 samples)
Monitoring (national agency policy) (8 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
86.1%
Sampled 3 Sep 2026, 28 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 14:12 | 86.1 | 86.1% |
| 4 Aug 2026, 11:09 | 97.2 | 97.2% |
| 9 Jul 2026, 13:19 | 95.7 | 95.7% |
| 2 Jun 2026, 12:59 | 84 | 84% |
| 29 May 2026, 14:28 | 76.5 | 76.5% |
| 21 Apr 2026, 08:27 | 104.4 | 104.4% |
| 23 Mar 2026, 11:45 | 98 | 98% |
| 5 Feb 2026, 13:50 | 100.2 | 100.2% |
| 20 Jan 2026, 14:31 | 97.9 | 97.9% |
| 16 Dec 2025, 14:49 | 95.5 | 95.5% |
| 27 Nov 2025, 08:51 | 99.1 | 99.1% |
| 29 Oct 2025, 08:41 | 93.4 | 93.4% |
| 29 Sep 2025, 15:07 | 92.3 | 92.3% |
| 29 Aug 2025, 13:45 | 91.5 | 91.5% |
| 8 Jul 2025, 13:20 | 96.5 | 96.5% |
| 9 Jun 2025, 13:48 | 95.3 | 95.3% |
| 1 May 2025, 14:22 | 117.1 | 117.1% |
| 7 Apr 2025, 14:03 | 103.7 | 103.7% |
| 7 Mar 2025, 12:16 | 107.1 | 107.1% |
| 4 Feb 2025, 12:51 | 93.1 | 93.1% |
| 13 Jan 2025, 13:32 | 98.4 | 98.4% |
| 4 Dec 2024, 08:38 | 95.8 | 95.8% |
| 6 Nov 2024, 09:12 | 90.3 | 90.3% |
| 11 Oct 2024, 10:44 | 93.4 | 93.4% |
| 4 Sep 2024, 12:06 | 88.1 | 88.1% |
| 8 Aug 2024, 12:50 | 84.9 | 84.9% |
| 2 Jul 2024, 09:40 | 94.1 | 94.1% |
| 4 Apr 2024, 08:36 | 93.1 | 93.1% |
| 1 Feb 2024, 11:12 | 99.3 | 99.3% |
| 4 Jan 2024, 12:46 | 97.4 | 97.4% |
| 8 Dec 2023, 08:46 | 99.8 | 99.8% |
| 10 Nov 2023, 08:14 | 94 | 94% |
| 2 Oct 2023, 10:41 | 92.8 | 92.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.18 mg/l
Sampled 3 Sep 2026, 28 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 14:12 | 8.18 | 8.18 mg/l |
| 4 Aug 2026, 11:09 | 8.9 | 8.9 mg/l |
| 9 Jul 2026, 13:19 | 7.86 | 7.86 mg/l |
| 2 Jun 2026, 12:59 | 7.77 | 7.77 mg/l |
| 29 May 2026, 14:28 | 6.94 | 6.94 mg/l |
| 21 Apr 2026, 08:27 | 11.5 | 11.5 mg/l |
| 23 Mar 2026, 11:45 | 11.4 | 11.4 mg/l |
| 5 Feb 2026, 13:50 | 12.9 | 12.9 mg/l |
| 20 Jan 2026, 14:31 | 12.3 | 12.3 mg/l |
| 16 Dec 2025, 14:49 | 11.4 | 11.4 mg/l |
| 27 Nov 2025, 08:51 | 12.4 | 12.4 mg/l |
| 29 Oct 2025, 08:41 | 11.1 | 11.1 mg/l |
| 29 Sep 2025, 15:07 | 9.68 | 9.68 mg/l |
| 29 Aug 2025, 13:45 | 8.45 | 8.45 mg/l |
| 8 Jul 2025, 13:20 | 8.86 | 8.86 mg/l |
| 9 Jun 2025, 13:48 | 9.36 | 9.36 mg/l |
| 1 May 2025, 14:22 | 10.8 | 10.8 mg/l |
| 7 Apr 2025, 14:03 | 11 | 11 mg/l |
| 7 Mar 2025, 12:16 | 12.5 | 12.5 mg/l |
| 4 Feb 2025, 12:51 | 11.7 | 11.7 mg/l |
| 13 Jan 2025, 13:32 | 13.6 | 13.6 mg/l |
| 4 Dec 2024, 08:38 | 12.3 | 12.3 mg/l |
| 6 Nov 2024, 09:12 | 9.98 | 9.98 mg/l |
| 11 Oct 2024, 10:44 | 10.9 | 10.9 mg/l |
| 4 Sep 2024, 12:06 | 8.62 | 8.62 mg/l |
| 8 Aug 2024, 12:50 | 7.95 | 7.95 mg/l |
| 2 Jul 2024, 09:40 | 9.2 | 9.2 mg/l |
| 4 Apr 2024, 08:36 | 10.9 | 10.9 mg/l |
| 1 Feb 2024, 11:12 | 12.5 | 12.5 mg/l |
| 4 Jan 2024, 12:46 | 12 | 12 mg/l |
| 8 Dec 2023, 08:46 | 12.9 | 12.9 mg/l |
| 10 Nov 2023, 08:14 | 11.6 | 11.6 mg/l |
| 2 Oct 2023, 10:41 | 9.54 | 9.54 mg/l |
Water temperature
code 0076 · °C
17.7 °C
Sampled 3 Sep 2026, 28 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 14:12 | 17.7 | 17.7 °C |
| 4 Aug 2026, 11:09 | 19.5 | 19.5 °C |
| 9 Jul 2026, 13:19 | 25.2 | 25.2 °C |
| 2 Jun 2026, 12:59 | 19 | 19 °C |
| 29 May 2026, 14:28 | 20 | 20 °C |
| 21 Apr 2026, 08:27 | 10.8 | 10.8 °C |
| 23 Mar 2026, 11:45 | 8.8 | 8.8 °C |
| 5 Feb 2026, 13:50 | 4.6 | 4.6 °C |
| 20 Jan 2026, 14:31 | 5.7 | 5.7 °C |
| 16 Dec 2025, 14:49 | 7.7 | 7.7 °C |
| 27 Nov 2025, 08:51 | 5.6 | 5.6 °C |
| 29 Oct 2025, 08:41 | 7.7 | 7.7 °C |
| 29 Sep 2025, 15:07 | 13.1 | 13.1 °C |
| 29 Aug 2025, 13:45 | 19.1 | 19.1 °C |
| 8 Jul 2025, 13:20 | 19.4 | 19.4 °C |
| 9 Jun 2025, 13:48 | 16.1 | 16.1 °C |
| 1 May 2025, 14:22 | 19.3 | 19.3 °C |
| 7 Apr 2025, 14:03 | 12.4 | 12.4 °C |
| 7 Mar 2025, 12:16 | 8.5 | 8.5 °C |
| 4 Feb 2025, 12:51 | 5.5 | 5.5 °C |
| 13 Jan 2025, 13:32 | 2 | 2 °C |
| 4 Dec 2024, 08:38 | 4.8 | 4.8 °C |
| 6 Nov 2024, 09:12 | 10.8 | 10.8 °C |
| 11 Oct 2024, 10:44 | 8.5 | 8.5 °C |
| 4 Sep 2024, 12:06 | 16.3 | 16.3 °C |
| 8 Aug 2024, 12:50 | 18.4 | 18.4 °C |
| 2 Jul 2024, 09:40 | 16.3 | 16.3 °C |
| 4 Apr 2024, 08:36 | 8.4 | 8.4 °C |
| 1 Feb 2024, 11:12 | 5.4 | 5.4 °C |
| 4 Jan 2024, 12:46 | 6.4 | 6.4 °C |
| 8 Dec 2023, 08:46 | 4.4 | 4.4 °C |
| 10 Nov 2023, 08:14 | 6.3 | 6.3 °C |
| 2 Oct 2023, 10:41 | 14 | 14 °C |
pH
code 0061
7.76
Sampled 3 Sep 2026, 28 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 14:12 | 7.76 | 7.76 |
| 4 Aug 2026, 11:09 | 7.88 | 7.88 |
| 9 Jul 2026, 13:19 | 7.81 | 7.81 |
| 2 Jun 2026, 12:59 | 7.73 | 7.73 |
| 29 May 2026, 14:28 | 7.75 | 7.75 |
| 21 Apr 2026, 08:27 | 8.37 | 8.37 |
| 23 Mar 2026, 11:45 | 8.19 | 8.19 |
| 5 Feb 2026, 13:50 | 7.75 | 7.75 |
| 20 Jan 2026, 14:31 | 7.71 | 7.71 |
| 16 Dec 2025, 14:49 | 8.2 | 8.2 |
| 27 Nov 2025, 08:51 | 8.15 | 8.15 |
| 29 Oct 2025, 08:41 | 7.84 | 7.84 |
| 29 Sep 2025, 15:07 | 7.93 | 7.93 |
| 29 Aug 2025, 13:45 | 7.88 | 7.88 |
| 8 Jul 2025, 13:20 | 7.74 | 7.74 |
| 9 Jun 2025, 13:48 | 7.59 | 7.59 |
| 1 May 2025, 14:22 | 8.68 | 8.68 |
| 7 Apr 2025, 14:03 | 8.34 | 8.34 |
| 7 Mar 2025, 12:16 | 8.28 | 8.28 |
| 4 Feb 2025, 12:51 | 8.04 | 8.04 |
| 13 Jan 2025, 13:32 | 7.95 | 7.95 |
| 4 Dec 2024, 08:38 | 8.18 | 8.18 |
| 6 Nov 2024, 09:12 | 7.89 | 7.89 |
| 11 Oct 2024, 10:44 | 8.05 | 8.05 |
| 4 Sep 2024, 12:06 | 7.73 | 7.73 |
| 8 Aug 2024, 12:50 | 8.44 | 8.44 |
| 2 Jul 2024, 09:40 | 8.58 | 8.58 |
| 4 Apr 2024, 08:36 | 8.29 | 8.29 |
| 1 Feb 2024, 11:12 | 7.95 | 7.95 |
| 4 Jan 2024, 12:46 | 8.07 | 8.07 |
| 8 Dec 2023, 08:46 | 7.98 | 7.98 |
| 10 Nov 2023, 08:14 | 8.01 | 8.01 |
| 2 Oct 2023, 10:41 | 8.01 | 8.01 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.026 mg/l
Sampled 3 Sep 2026, 28 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 14:12 | 0.026 | 0.026 mg/l |
| 4 Aug 2026, 11:09 | 0.0063 | 0.0063 mg/l |
| 9 Jul 2026, 13:19 | 0.029 | 0.029 mg/l |
| 2 Jun 2026, 12:59 | 0.044 | 0.044 mg/l |
| 29 May 2026, 14:28 | 0.059 | 0.059 mg/l |
| 21 Apr 2026, 08:27 | 0.0096 | 0.0096 mg/l |
| 23 Mar 2026, 11:45 | 0.016 | 0.016 mg/l |
| 5 Feb 2026, 13:50 | 0.061 | 0.061 mg/l |
| 20 Jan 2026, 14:31 | 0.042 | 0.042 mg/l |
| 16 Dec 2025, 14:49 | 0.031 | 0.031 mg/l |
| 27 Nov 2025, 08:51 | 0.032 | 0.032 mg/l |
| 29 Oct 2025, 08:41 | 0.025 | 0.025 mg/l |
| 29 Sep 2025, 15:07 | 0.015 | 0.015 mg/l |
| 29 Aug 2025, 13:45 | 0.019 | 0.019 mg/l |
| 8 Jul 2025, 13:20 | 0.016 | 0.016 mg/l |
| 9 Jun 2025, 13:48 | 0.016 | 0.016 mg/l |
| 1 May 2025, 14:22 | <0.002 | below 0.002 mg/l (not detected above this) |
| 7 Apr 2025, 14:03 | 0.0054 | 0.0054 mg/l |
| 7 Mar 2025, 12:16 | 0.014 | 0.014 mg/l |
| 4 Feb 2025, 12:51 | 0.045 | 0.045 mg/l |
| 13 Jan 2025, 13:32 | 0.084 | 0.084 mg/l |
| 4 Dec 2024, 08:38 | 0.021 | 0.021 mg/l |
| 6 Nov 2024, 09:12 | 0.008 | 0.008 mg/l |
| 11 Oct 2024, 10:44 | 0.039 | 0.039 mg/l |
| 4 Sep 2024, 12:06 | 0.028 | 0.028 mg/l |
| 8 Aug 2024, 12:50 | 0.029 | 0.029 mg/l |
| 2 Jul 2024, 09:40 | 0.035 | 0.035 mg/l |
| 1 Feb 2024, 11:12 | 0.096 | 0.096 mg/l |
| 4 Jan 2024, 12:46 | 0.045 | 0.045 mg/l |
| 8 Dec 2023, 08:46 | 0.093 | 0.093 mg/l |
| 10 Nov 2023, 08:14 | 0.023 | 0.023 mg/l |
| 2 Oct 2023, 10:41 | 0.014 | 0.014 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.49 mg/l
Sampled 3 Sep 2026, 28 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 14:12 | 2.49 | 2.49 mg/l |
| 4 Aug 2026, 11:09 | 2.89 | 2.89 mg/l |
| 9 Jul 2026, 13:19 | 2.59 | 2.59 mg/l |
| 2 Jun 2026, 12:59 | 2.98 | 2.98 mg/l |
| 29 May 2026, 14:28 | 3.27 | 3.27 mg/l |
| 21 Apr 2026, 08:27 | 2.19 | 2.19 mg/l |
| 23 Mar 2026, 11:45 | 3.69 | 3.69 mg/l |
| 5 Feb 2026, 13:50 | 3.87 | 3.87 mg/l |
| 20 Jan 2026, 14:31 | 3.37 | 3.37 mg/l |
| 16 Dec 2025, 14:49 | 2.39 | 2.39 mg/l |
| 27 Nov 2025, 08:51 | 4.08 | 4.08 mg/l |
| 29 Oct 2025, 08:41 | 1.17 | 1.17 mg/l |
| 29 Sep 2025, 15:07 | 1.99 | 1.99 mg/l |
| 29 Aug 2025, 13:45 | 3.39 | 3.39 mg/l |
| 8 Jul 2025, 13:20 | 2.28 | 2.28 mg/l |
| 9 Jun 2025, 13:48 | 2.28 | 2.28 mg/l |
| 1 May 2025, 14:22 | 3.78 | 3.78 mg/l |
| 7 Apr 2025, 14:03 | 3.39 | 3.39 mg/l |
| 7 Mar 2025, 12:16 | 3.49 | 3.49 mg/l |
| 4 Feb 2025, 12:51 | 3.67 | 3.67 mg/l |
| 13 Jan 2025, 13:32 | 4.08 | 4.08 mg/l |
| 4 Dec 2024, 08:38 | 1.98 | 1.98 mg/l |
| 6 Nov 2024, 09:12 | 2.89 | 2.89 mg/l |
| 11 Oct 2024, 10:44 | 3.28 | 3.28 mg/l |
| 4 Sep 2024, 12:06 | 2.19 | 2.19 mg/l |
| 8 Aug 2024, 12:50 | 3.29 | 3.29 mg/l |
| 2 Jul 2024, 09:40 | 3.28 | 3.28 mg/l |
| 1 Feb 2024, 11:12 | 4.97 | 4.97 mg/l |
| 4 Jan 2024, 12:46 | 2.09 | 2.09 mg/l |
| 8 Dec 2023, 08:46 | 1.29 | 1.29 mg/l |
| 10 Nov 2023, 08:14 | 0.872 | 0.872 mg/l |
| 2 Oct 2023, 10:41 | 1.39 | 1.39 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.26 mg/l
Sampled 3 Sep 2026, 28 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 14:12 | 0.26 | 0.26 mg/l |
| 4 Aug 2026, 11:09 | 0.36 | 0.36 mg/l |
| 9 Jul 2026, 13:19 | 0.3 | 0.3 mg/l |
| 2 Jun 2026, 12:59 | 0.31 | 0.31 mg/l |
| 29 May 2026, 14:28 | 0.35 | 0.35 mg/l |
| 21 Apr 2026, 08:27 | 0.14 | 0.14 mg/l |
| 23 Mar 2026, 11:45 | 0.14 | 0.14 mg/l |
| 5 Feb 2026, 13:50 | 0.092 | 0.092 mg/l |
| 20 Jan 2026, 14:31 | 0.087 | 0.087 mg/l |
| 16 Dec 2025, 14:49 | 0.072 | 0.072 mg/l |
| 27 Nov 2025, 08:51 | 0.075 | 0.075 mg/l |
| 29 Oct 2025, 08:41 | 0.14 | 0.14 mg/l |
| 29 Sep 2025, 15:07 | 0.2 | 0.2 mg/l |
| 29 Aug 2025, 13:45 | 0.48 | 0.48 mg/l |
| 8 Jul 2025, 13:20 | 0.35 | 0.35 mg/l |
| 9 Jun 2025, 13:48 | 0.29 | 0.29 mg/l |
| 1 May 2025, 14:22 | 0.38 | 0.38 mg/l |
| 7 Apr 2025, 14:03 | 0.28 | 0.28 mg/l |
| 7 Mar 2025, 12:16 | 0.16 | 0.16 mg/l |
| 4 Feb 2025, 12:51 | 0.13 | 0.13 mg/l |
| 13 Jan 2025, 13:32 | 0.14 | 0.14 mg/l |
| 4 Dec 2024, 08:38 | 0.11 | 0.11 mg/l |
| 6 Nov 2024, 09:12 | 0.17 | 0.17 mg/l |
| 11 Oct 2024, 10:44 | 0.098 | 0.098 mg/l |
| 4 Sep 2024, 12:06 | 0.26 | 0.26 mg/l |
| 8 Aug 2024, 12:50 | 0.35 | 0.35 mg/l |
| 2 Jul 2024, 09:40 | 0.31 | 0.31 mg/l |
| 1 Feb 2024, 11:12 | 0.16 | 0.16 mg/l |
| 4 Jan 2024, 12:46 | 0.047 | 0.047 mg/l |
| 8 Dec 2023, 08:46 | 0.045 | 0.045 mg/l |
| 10 Nov 2023, 08:14 | 0.035 | 0.035 mg/l |
| 2 Oct 2023, 10:41 | 0.13 | 0.13 mg/l |
Turbidity
code 6396 · NTU
16 NTU
Sampled 1 Feb 2024, 2.7 years ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Feb 2024, 11:12 | 16 | 16 NTU |
| 4 Jan 2024, 12:46 | 32 | 32 NTU |
| 8 Dec 2023, 08:46 | 250 | 250 NTU |
| 10 Nov 2023, 08:14 | 11 | 11 NTU |
| 2 Oct 2023, 10:41 | 3.7 | 3.7 NTU |
Conductivity
at 25 °C · code 0077 · µS/cm
302 µS/cm
Sampled 3 Sep 2026, 28 days ago · 33 results banked
Every result (33)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Sep 2026, 14:12 | 302 | 302 µS/cm |
| 4 Aug 2026, 11:09 | 320 | 320 µS/cm |
| 9 Jul 2026, 13:19 | 329 | 329 µS/cm |
| 2 Jun 2026, 12:59 | 388 | 388 µS/cm |
| 29 May 2026, 14:28 | 410 | 410 µS/cm |
| 21 Apr 2026, 08:27 | 311 | 311 µS/cm |
| 23 Mar 2026, 11:45 | 407 | 407 µS/cm |
| 5 Feb 2026, 13:50 | 378 | 378 µS/cm |
| 20 Jan 2026, 14:31 | 334 | 334 µS/cm |
| 16 Dec 2025, 14:49 | 239 | 239 µS/cm |
| 27 Nov 2025, 08:51 | 475 | 475 µS/cm |
| 29 Oct 2025, 08:41 | 187 | 187 µS/cm |
| 29 Sep 2025, 15:07 | 264 | 264 µS/cm |
| 29 Aug 2025, 13:45 | 375 | 375 µS/cm |
| 8 Jul 2025, 13:20 | 283 | 283 µS/cm |
| 9 Jun 2025, 13:48 | 322 | 322 µS/cm |
| 1 May 2025, 14:22 | 492 | 492 µS/cm |
| 7 Apr 2025, 14:03 | 466 | 466 µS/cm |
| 7 Mar 2025, 12:16 | 463 | 463 µS/cm |
| 4 Feb 2025, 12:51 | 459 | 459 µS/cm |
| 13 Jan 2025, 13:32 | 488 | 488 µS/cm |
| 4 Dec 2024, 08:38 | 322 | 322 µS/cm |
| 6 Nov 2024, 09:12 | 411 | 411 µS/cm |
| 11 Oct 2024, 10:44 | 333 | 333 µS/cm |
| 4 Sep 2024, 12:06 | 291 | 291 µS/cm |
| 8 Aug 2024, 12:50 | 465 | 465 µS/cm |
| 2 Jul 2024, 09:40 | 665 | 665 µS/cm |
| 4 Apr 2024, 08:36 | 276 | 276 µS/cm |
| 1 Feb 2024, 11:12 | 268 | 268 µS/cm |
| 4 Jan 2024, 12:46 | 299 | 299 µS/cm |
| 8 Dec 2023, 08:46 | 201 | 201 µS/cm |
| 10 Nov 2023, 08:14 | 187 | 187 µS/cm |
| 2 Oct 2023, 10:41 | 409 | 409 µS/cm |
Everything measured here
15 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 15 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 33 | Oct 2023 – Sep 2026 | 86.1% 3 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 33 | Oct 2023 – Sep 2026 | 8.18 mg/l 3 Sep 2026 |
| Temperature of Water 0076 | River water | 33 | Oct 2023 – Sep 2026 | 17.7 °C 3 Sep 2026 |
| pH 0061 | River water | 33 | Oct 2023 – Sep 2026 | 7.76 3 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 32 | Oct 2023 – Sep 2026 | 0.026 mg/l 3 Sep 2026 |
| Nitrate as N 0117 | River water | 32 | Oct 2023 – Sep 2026 | 2.49 mg/l 3 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 32 | Oct 2023 – Sep 2026 | 0.26 mg/l 3 Sep 2026 |
| Turbidity 6396 | River water | 5 | Oct 2023 – Feb 2024 | 16 NTU 1 Feb 2024 |
| Conductivity at 25 C 0077 | River water | 33 | Oct 2023 – Sep 2026 | 302 µS/cm 3 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 31 | Oct 2023 – Sep 2026 | 75 mg/l 3 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 32 | Oct 2023 – Sep 2026 | 0.00048 mg/l 3 Sep 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 5 | Oct 2023 – Feb 2024 | 0.7 µg/l 1 Feb 2024 |
| Nitrite as N 0118 | River water | 32 | Oct 2023 – Sep 2026 | 0.01 mg/l 3 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 32 | Oct 2023 – Sep 2026 | 2.5 mg/l 3 Sep 2026 |
| Solids, Suspended at 105 C 0135 | River water | 5 | Oct 2023 – Feb 2024 | 22 mg/l 1 Feb 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.