Tees just upstream of Blackwell Bridge (WRPN)
EA name: TEES JUST U/S BLACKWELL BRIDGE (WRPN)
Environment Agency sampling point NE-45200249 · 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
- 7 Sep 2026, 11:2124 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 32 since 18 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 427035, 512617As 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, 2 m from the line.
- Next gauge downstream
- Hurworth On the River Tees · 11 km along the river
- Nearest gauge upstream
- Broken Scar On the River Tees · 3.1 km along the river
- Why it was sampled
- Planned investigation (local monitoring) (27 samples)
Monitoring (national agency policy) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
98.5%
Sampled 7 Sep 2026, 24 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:21 | 98.5 | 98.5% |
| 21 Aug 2026, 11:09 | 100.3 | 100.3% |
| 28 Jul 2026, 09:20 | 96.5 | 96.5% |
| 26 Jun 2026, 08:25 | 98.5 | 98.5% |
| 29 May 2026, 07:24 | 85.7 | 85.7% |
| 10 Apr 2026, 09:11 | 97.6 | 97.6% |
| 20 Mar 2026, 07:47 | 99.4 | 99.4% |
| 27 Feb 2026, 13:35 | 102.2 | 102.2% |
| 8 Jan 2026, 08:48 | 100.7 | 100.7% |
| 18 Dec 2025, 08:50 | 104.7 | 104.7% |
| 28 Nov 2025, 10:18 | 102.1 | 102.1% |
| 31 Oct 2025, 08:20 | 98.8 | 98.8% |
| 11 Sep 2025, 07:52 | 91.6 | 91.6% |
| 28 Aug 2025, 08:16 | 92.7 | 92.7% |
| 30 Jul 2025, 07:53 | 94.9 | 94.9% |
| 12 Jun 2025, 13:18 | 99.3 | 99.3% |
| 28 May 2025, 16:22 | 101.1 | 101.1% |
| 1 Apr 2025, 13:29 | 108.6 | 108.6% |
| 5 Mar 2025, 13:12 | 101.5 | 101.5% |
| 3 Feb 2025, 09:17 | 95.5 | 95.5% |
| 14 Jan 2025, 11:59 | 101.4 | 101.4% |
| 2 Dec 2024, 08:33 | 98 | 98% |
| 1 Nov 2024, 11:09 | 99.2 | 99.2% |
| 2 Oct 2024, 08:52 | 98.6 | 98.6% |
| 10 Sep 2024, 09:46 | 97.4 | 97.4% |
| 6 Aug 2024, 14:00 | 112.8 | 112.8% |
| 1 Jul 2024, 14:53 | 105.9 | 105.9% |
| 1 Feb 2024, 08:23 | 102.4 | 102.4% |
| 2 Jan 2024, 09:18 | 101.1 | 101.1% |
| 12 Dec 2023, 14:30 | 99.8 | 99.8% |
| 7 Nov 2023, 12:37 | 100.2 | 100.2% |
| 18 Oct 2023, 14:19 | 105.4 | 105.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.72 mg/l
Sampled 7 Sep 2026, 24 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:21 | 9.72 | 9.72 mg/l |
| 21 Aug 2026, 11:09 | 10.1 | 10.1 mg/l |
| 28 Jul 2026, 09:20 | 8.96 | 8.96 mg/l |
| 26 Jun 2026, 08:25 | 8.53 | 8.53 mg/l |
| 29 May 2026, 07:24 | 7.99 | 7.99 mg/l |
| 10 Apr 2026, 09:11 | 11.3 | 11.3 mg/l |
| 20 Mar 2026, 07:47 | 11.6 | 11.6 mg/l |
| 27 Feb 2026, 13:35 | 12.3 | 12.3 mg/l |
| 8 Jan 2026, 08:48 | 14.7 | 14.7 mg/l |
| 18 Dec 2025, 08:50 | 12.6 | 12.6 mg/l |
| 28 Nov 2025, 10:18 | 12.3 | 12.3 mg/l |
| 31 Oct 2025, 08:20 | 11.8 | 11.8 mg/l |
| 11 Sep 2025, 07:52 | 9.54 | 9.54 mg/l |
| 28 Aug 2025, 08:16 | 9.15 | 9.15 mg/l |
| 30 Jul 2025, 07:53 | 9.38 | 9.38 mg/l |
| 12 Jun 2025, 13:18 | 9.34 | 9.34 mg/l |
| 28 May 2025, 16:22 | 10.4 | 10.4 mg/l |
| 1 Apr 2025, 13:29 | 12.1 | 12.1 mg/l |
| 5 Mar 2025, 13:12 | 12.4 | 12.4 mg/l |
| 3 Feb 2025, 09:17 | 12.5 | 12.5 mg/l |
| 14 Jan 2025, 11:59 | 13.1 | 13.1 mg/l |
| 2 Dec 2024, 08:33 | 11.5 | 11.5 mg/l |
| 1 Nov 2024, 11:09 | 11 | 11 mg/l |
| 2 Oct 2024, 08:52 | 10.9 | 10.9 mg/l |
| 10 Sep 2024, 09:46 | 10.1 | 10.1 mg/l |
| 6 Aug 2024, 14:00 | 10.3 | 10.3 mg/l |
| 1 Jul 2024, 14:53 | 10.5 | 10.5 mg/l |
| 1 Feb 2024, 08:23 | 13.3 | 13.3 mg/l |
| 2 Jan 2024, 09:18 | 12.7 | 12.7 mg/l |
| 12 Dec 2023, 14:30 | 12.5 | 12.5 mg/l |
| 7 Nov 2023, 12:37 | 11.8 | 11.8 mg/l |
| 18 Oct 2023, 14:19 | 11.9 | 11.9 mg/l |
Water temperature
code 0076 · °C
15.9 °C
Sampled 7 Sep 2026, 24 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:21 | 15.9 | 15.9 °C |
| 21 Aug 2026, 11:09 | 15.1 | 15.1 °C |
| 28 Jul 2026, 09:20 | 18.8 | 18.8 °C |
| 26 Jun 2026, 08:25 | 22.4 | 22.4 °C |
| 29 May 2026, 07:24 | 18.6 | 18.6 °C |
| 10 Apr 2026, 09:11 | 8.7 | 8.7 °C |
| 20 Mar 2026, 07:47 | 8.5 | 8.5 °C |
| 27 Feb 2026, 13:35 | 7.3 | 7.3 °C |
| 8 Jan 2026, 08:48 | 0 | 0 °C |
| 18 Dec 2025, 08:50 | 7.3 | 7.3 °C |
| 28 Nov 2025, 10:18 | 7.1 | 7.1 °C |
| 31 Oct 2025, 08:20 | 7.7 | 7.7 °C |
| 11 Sep 2025, 07:52 | 13.4 | 13.4 °C |
| 28 Aug 2025, 08:16 | 15.9 | 15.9 °C |
| 30 Jul 2025, 07:53 | 15.8 | 15.8 °C |
| 12 Jun 2025, 13:18 | 18.2 | 18.2 °C |
| 28 May 2025, 16:22 | 14.1 | 14.1 °C |
| 1 Apr 2025, 13:29 | 10.5 | 10.5 °C |
| 5 Mar 2025, 13:12 | 6.8 | 6.8 °C |
| 3 Feb 2025, 09:17 | 4 | 4 °C |
| 14 Jan 2025, 11:59 | 4.6 | 4.6 °C |
| 2 Dec 2024, 08:33 | 8.2 | 8.2 °C |
| 1 Nov 2024, 11:09 | 10.7 | 10.7 °C |
| 2 Oct 2024, 08:52 | 10.9 | 10.9 °C |
| 10 Sep 2024, 09:46 | 13.7 | 13.7 °C |
| 6 Aug 2024, 14:00 | 19.5 | 19.5 °C |
| 1 Jul 2024, 14:53 | 15.7 | 15.7 °C |
| 1 Feb 2024, 08:23 | 4.3 | 4.3 °C |
| 2 Jan 2024, 09:18 | 5.5 | 5.5 °C |
| 12 Dec 2023, 14:30 | 5.7 | 5.7 °C |
| 7 Nov 2023, 12:37 | 8.2 | 8.2 °C |
| 18 Oct 2023, 14:19 | 9.9 | 9.9 °C |
pH
code 0061
8.12
Sampled 7 Sep 2026, 24 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:21 | 8.12 | 8.12 |
| 21 Aug 2026, 11:09 | 7.95 | 7.95 |
| 28 Jul 2026, 09:20 | 8.55 | 8.55 |
| 26 Jun 2026, 08:25 | 8.3 | 8.3 |
| 29 May 2026, 07:24 | 7.85 | 7.85 |
| 10 Apr 2026, 09:11 | 8.33 | 8.33 |
| 20 Mar 2026, 07:47 | 8.38 | 8.38 |
| 27 Feb 2026, 13:35 | 8.18 | 8.18 |
| 8 Jan 2026, 08:48 | 8.04 | 8.04 |
| 18 Dec 2025, 08:50 | 8.6 | 8.6 |
| 28 Nov 2025, 10:18 | 8.25 | 8.25 |
| 31 Oct 2025, 08:20 | 8.07 | 8.07 |
| 11 Sep 2025, 07:52 | 8.27 | 8.27 |
| 28 Aug 2025, 08:16 | 7.95 | 7.95 |
| 30 Jul 2025, 07:53 | 8.41 | 8.41 |
| 12 Jun 2025, 13:18 | 7.88 | 7.88 |
| 28 May 2025, 16:22 | 8.1 | 8.1 |
| 1 Apr 2025, 13:29 | 8.49 | 8.49 |
| 5 Mar 2025, 13:12 | 7.83 | 7.83 |
| 3 Feb 2025, 09:17 | 8.21 | 8.21 |
| 14 Jan 2025, 11:59 | 8.3 | 8.3 |
| 2 Dec 2024, 08:33 | 8.42 | 8.42 |
| 1 Nov 2024, 11:09 | 8.15 | 8.15 |
| 2 Oct 2024, 08:52 | 8.12 | 8.12 |
| 10 Sep 2024, 09:46 | 7.83 | 7.83 |
| 6 Aug 2024, 14:00 | 8.44 | 8.44 |
| 1 Jul 2024, 14:53 | 8.62 | 8.62 |
| 1 Feb 2024, 08:23 | 8.4 | 8.4 |
| 2 Jan 2024, 09:18 | 7.89 | 7.89 |
| 12 Dec 2023, 14:30 | 7.98 | 7.98 |
| 7 Nov 2023, 12:37 | 8.2 | 8.2 |
| 18 Oct 2023, 14:19 | 8.07 | 8.07 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.0088 mg/l
Sampled 7 Sep 2026, 24 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:21 | 0.0088 | 0.0088 mg/l |
| 21 Aug 2026, 11:09 | 0.0046 | 0.0046 mg/l |
| 28 Jul 2026, 09:20 | 0.0056 | 0.0056 mg/l |
| 26 Jun 2026, 08:25 | 0.15 | 0.15 mg/l |
| 29 May 2026, 07:24 | 0.029 | 0.029 mg/l |
| 10 Apr 2026, 09:11 | 0.0056 | 0.0056 mg/l |
| 20 Mar 2026, 07:47 | 0.022 | 0.022 mg/l |
| 27 Feb 2026, 13:35 | 0.008 | 0.008 mg/l |
| 8 Jan 2026, 08:48 | 0.017 | 0.017 mg/l |
| 18 Dec 2025, 08:50 | 0.0042 | 0.0042 mg/l |
| 28 Nov 2025, 10:18 | <0.002 | below 0.002 mg/l (not detected above this) |
| 31 Oct 2025, 08:20 | <0.002 | below 0.002 mg/l (not detected above this) |
| 11 Sep 2025, 07:52 | 0.0095 | 0.0095 mg/l |
| 28 Aug 2025, 08:16 | 0.0067 | 0.0067 mg/l |
| 30 Jul 2025, 07:53 | 0.0091 | 0.0091 mg/l |
| 12 Jun 2025, 13:18 | 0.02 | 0.02 mg/l |
| 28 May 2025, 16:22 | 0.038 | 0.038 mg/l |
| 1 Apr 2025, 13:29 | 0.0071 | 0.0071 mg/l |
| 5 Mar 2025, 13:12 | 0.017 | 0.017 mg/l |
| 3 Feb 2025, 09:17 | 0.0072 | 0.0072 mg/l |
| 14 Jan 2025, 11:59 | 0.009 | 0.009 mg/l |
| 2 Dec 2024, 08:33 | 0.0039 | 0.0039 mg/l |
| 1 Nov 2024, 11:09 | 0.0024 | 0.0024 mg/l |
| 2 Oct 2024, 08:52 | 0.0084 | 0.0084 mg/l |
| 10 Sep 2024, 09:46 | <0.002 | below 0.002 mg/l (not detected above this) |
| 1 Jul 2024, 14:53 | 0.0057 | 0.0057 mg/l |
| 1 Feb 2024, 08:23 | 0.02 | 0.02 mg/l |
| 2 Jan 2024, 09:18 | 0.13 | 0.13 mg/l |
| 12 Dec 2023, 14:30 | 0.015 | 0.015 mg/l |
| 7 Nov 2023, 12:37 | <0.002 | below 0.002 mg/l (not detected above this) |
| 18 Oct 2023, 14:19 | 0.0024 | 0.0024 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.318 mg/l
Sampled 7 Sep 2026, 24 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:21 | 0.318 | 0.318 mg/l |
| 21 Aug 2026, 11:09 | 0.308 | 0.308 mg/l |
| 28 Jul 2026, 09:20 | 0.198 | 0.198 mg/l |
| 26 Jun 2026, 08:25 | 0.486 | 0.486 mg/l |
| 29 May 2026, 07:24 | 0.72 | 0.72 mg/l |
| 10 Apr 2026, 09:11 | 0.996 | 0.996 mg/l |
| 20 Mar 2026, 07:47 | 1.59 | 1.59 mg/l |
| 27 Feb 2026, 13:35 | 0.688 | 0.688 mg/l |
| 8 Jan 2026, 08:48 | 1.4 | 1.4 mg/l |
| 18 Dec 2025, 08:50 | 0.588 | 0.588 mg/l |
| 28 Nov 2025, 10:18 | 0.518 | 0.518 mg/l |
| 31 Oct 2025, 08:20 | 0.219 | 0.219 mg/l |
| 11 Sep 2025, 07:52 | 0.268 | 0.268 mg/l |
| 28 Aug 2025, 08:16 | 0.209 | 0.209 mg/l |
| 30 Jul 2025, 07:53 | 0.229 | 0.229 mg/l |
| 12 Jun 2025, 13:18 | 0.297 | 0.297 mg/l |
| 28 May 2025, 16:22 | 0.503 | 0.503 mg/l |
| 1 Apr 2025, 13:29 | 0.697 | 0.697 mg/l |
| 5 Mar 2025, 13:12 | 1.39 | 1.39 mg/l |
| 3 Feb 2025, 09:17 | 1.6 | 1.6 mg/l |
| 14 Jan 2025, 11:59 | 0.857 | 0.857 mg/l |
| 2 Dec 2024, 08:33 | 0.647 | 0.647 mg/l |
| 1 Nov 2024, 11:09 | 0.877 | 0.877 mg/l |
| 2 Oct 2024, 08:52 | 2.29 | 2.29 mg/l |
| 10 Sep 2024, 09:46 | 0.0871 | 0.0871 mg/l |
| 1 Jul 2024, 14:53 | 0.737 | 0.737 mg/l |
| 1 Feb 2024, 08:23 | 0.817 | 0.817 mg/l |
| 2 Jan 2024, 09:18 | 1.09 | 1.09 mg/l |
| 12 Dec 2023, 14:30 | 2 | 2 mg/l |
| 7 Nov 2023, 12:37 | 2.1 | 2.1 mg/l |
| 18 Oct 2023, 14:19 | 0.748 | 0.748 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.019 mg/l
Sampled 7 Sep 2026, 24 days ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:21 | 0.019 | 0.019 mg/l |
| 21 Aug 2026, 11:09 | 0.019 | 0.019 mg/l |
| 28 Jul 2026, 09:20 | 0.006 | 0.006 mg/l |
| 26 Jun 2026, 08:25 | 0.012 | 0.012 mg/l |
| 29 May 2026, 07:24 | 0.014 | 0.014 mg/l |
| 10 Apr 2026, 09:11 | 0.007 | 0.007 mg/l |
| 20 Mar 2026, 07:47 | 0.015 | 0.015 mg/l |
| 27 Feb 2026, 13:35 | 0.007 | 0.007 mg/l |
| 8 Jan 2026, 08:48 | 0.019 | 0.019 mg/l |
| 18 Dec 2025, 08:50 | 0.013 | 0.013 mg/l |
| 28 Nov 2025, 10:18 | 0.008 | 0.008 mg/l |
| 31 Oct 2025, 08:20 | 0.011 | 0.011 mg/l |
| 11 Sep 2025, 07:52 | 0.02 | 0.02 mg/l |
| 28 Aug 2025, 08:16 | 0.015 | 0.015 mg/l |
| 30 Jul 2025, 07:53 | 0.016 | 0.016 mg/l |
| 12 Jun 2025, 13:18 | 0.015 | 0.015 mg/l |
| 28 May 2025, 16:22 | 0.026 | 0.026 mg/l |
| 1 Apr 2025, 13:29 | 0.0067 | 0.0067 mg/l |
| 5 Mar 2025, 13:12 | 0.015 | 0.015 mg/l |
| 3 Feb 2025, 09:17 | 0.02 | 0.02 mg/l |
| 14 Jan 2025, 11:59 | 0.021 | 0.021 mg/l |
| 2 Dec 2024, 08:33 | 0.011 | 0.011 mg/l |
| 1 Nov 2024, 11:09 | 0.014 | 0.014 mg/l |
| 2 Oct 2024, 08:52 | 0.022 | 0.022 mg/l |
| 10 Sep 2024, 09:46 | 0.011 | 0.011 mg/l |
| 1 Jul 2024, 14:53 | 0.016 | 0.016 mg/l |
| 1 Feb 2024, 08:23 | 0.01 | 0.01 mg/l |
| 2 Jan 2024, 09:18 | 0.018 | 0.018 mg/l |
| 12 Dec 2023, 14:30 | 0.014 | 0.014 mg/l |
| 7 Nov 2023, 12:37 | 0.02 | 0.02 mg/l |
| 18 Oct 2023, 14:19 | 0.023 | 0.023 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, 08:23 | 16 | 16 NTU |
| 2 Jan 2024, 09:18 | 72 | 72 NTU |
| 12 Dec 2023, 14:30 | 34 | 34 NTU |
| 7 Nov 2023, 12:37 | 3.4 | 3.4 NTU |
| 18 Oct 2023, 14:19 | <1 | below 1 NTU (not detected above this) |
Conductivity
at 25 °C · code 0077 · µS/cm
144 µS/cm
Sampled 7 Sep 2026, 24 days ago · 32 results banked
Every result (32)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 11:21 | 144 | 144 µS/cm |
| 21 Aug 2026, 11:09 | 131 | 131 µS/cm |
| 28 Jul 2026, 09:20 | 201 | 201 µS/cm |
| 26 Jun 2026, 08:25 | 275 | 275 µS/cm |
| 29 May 2026, 07:24 | 206 | 206 µS/cm |
| 10 Apr 2026, 09:11 | 218 | 218 µS/cm |
| 20 Mar 2026, 07:47 | 265 | 265 µS/cm |
| 27 Feb 2026, 13:35 | 117 | 117 µS/cm |
| 8 Jan 2026, 08:48 | 274 | 274 µS/cm |
| 18 Dec 2025, 08:50 | 131 | 131 µS/cm |
| 28 Nov 2025, 10:18 | 117 | 117 µS/cm |
| 31 Oct 2025, 08:20 | 135 | 135 µS/cm |
| 11 Sep 2025, 07:52 | 165 | 165 µS/cm |
| 28 Aug 2025, 08:16 | 157 | 157 µS/cm |
| 30 Jul 2025, 07:53 | 329 | 329 µS/cm |
| 12 Jun 2025, 13:18 | 136 | 136 µS/cm |
| 28 May 2025, 16:22 | 219 | 219 µS/cm |
| 1 Apr 2025, 13:29 | 231 | 231 µS/cm |
| 5 Mar 2025, 13:12 | 562 | 562 µS/cm |
| 3 Feb 2025, 09:17 | 274 | 274 µS/cm |
| 14 Jan 2025, 11:59 | 277 | 277 µS/cm |
| 2 Dec 2024, 08:33 | 249 | 249 µS/cm |
| 1 Nov 2024, 11:09 | 219 | 219 µS/cm |
| 2 Oct 2024, 08:52 | 233 | 233 µS/cm |
| 10 Sep 2024, 09:46 | 112 | 112 µS/cm |
| 6 Aug 2024, 14:00 | 229 | 229 µS/cm |
| 1 Jul 2024, 14:53 | 243 | 243 µS/cm |
| 1 Feb 2024, 08:23 | 158 | 158 µS/cm |
| 2 Jan 2024, 09:18 | 166 | 166 µS/cm |
| 12 Dec 2023, 14:30 | 285 | 285 µS/cm |
| 7 Nov 2023, 12:37 | 312 | 312 µS/cm |
| 18 Oct 2023, 14:19 | 229 | 229 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 | 32 | Oct 2023 – Sep 2026 | 98.5% 7 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 32 | Oct 2023 – Sep 2026 | 9.72 mg/l 7 Sep 2026 |
| Temperature of Water 0076 | River water | 32 | Oct 2023 – Sep 2026 | 15.9 °C 7 Sep 2026 |
| pH 0061 | River water | 32 | Oct 2023 – Sep 2026 | 8.12 7 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 31 | Oct 2023 – Sep 2026 | 0.0088 mg/l 7 Sep 2026 |
| Nitrate as N 0117 | River water | 31 | Oct 2023 – Sep 2026 | 0.318 mg/l 7 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 31 | Oct 2023 – Sep 2026 | 0.019 mg/l 7 Sep 2026 |
| Turbidity 6396 | River water | 5 | Oct 2023 – Feb 2024 | 16 NTU 1 Feb 2024 |
| Conductivity at 25 C 0077 | River water | 32 | Oct 2023 – Sep 2026 | 144 µS/cm 7 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 32 | Oct 2023 – Sep 2026 | 52 mg/l 7 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 31 | Oct 2023 – Sep 2026 | 0.00025 mg/l 7 Sep 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 5 | Oct 2023 – Feb 2024 | 3.8 µg/l 1 Feb 2024 |
| Nitrite as N 0118 | River water | 31 | Oct 2023 – Sep 2026 | below 0.002 mg/l 7 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 31 | Oct 2023 – Sep 2026 | 0.32 mg/l 7 Sep 2026 |
| Solids, Suspended at 105 C 0135 | River water | 5 | Oct 2023 – Feb 2024 | 20 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.