Minley Brook at B3013, Fleet
EA name: MINLEY BROOK AT B3013, FLEET
Environment Agency sampling point TH-PLDR0145 · 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
- 10 Jul 2026, 13:583 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 32 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 481200, 156540As published, to the nearest 10 m. Open in a map
- River, by its own name
- Minley Brook
- River, by the map
- Minley BrookPlaced on the river its name gives, 10 m from the line.
- Next gauge downstream
- Bramshill On the River Hart · 8.4 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (32 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
29.8%
Sampled 10 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 13:58 | 29.8 | 29.8% |
| 25 Jun 2026, 09:37 | 28 | 28% |
| 11 May 2026, 13:29 | 55.5 | 55.5% |
| 9 Apr 2026, 08:54 | 70.3 | 70.3% |
| 17 Mar 2026, 10:15 | 74.4 | 74.4% |
| 12 Feb 2026, 09:03 | 70.6 | 70.6% |
| 29 Jan 2026, 12:49 | 69 | 69% |
| 10 Dec 2025, 11:38 | 70.6 | 70.6% |
| 13 Nov 2025, 10:08 | 48.4 | 48.4% |
| 8 Oct 2025, 08:56 | 53.4 | 53.4% |
| 11 Sep 2025, 12:15 | 60 | 60% |
| 14 Aug 2025, 10:15 | 24.9 | 24.9% |
| 15 Jul 2025, 12:43 | 45.4 | 45.4% |
| 25 Jun 2025, 09:29 | 24.6 | 24.6% |
| 13 May 2025, 10:10 | 45.6 | 45.6% |
| 23 Apr 2025, 11:06 | 62.6 | 62.6% |
| 5 Mar 2025, 12:19 | 69.4 | 69.4% |
| 12 Feb 2025, 11:19 | 77 | 77% |
| 9 Jan 2025, 10:16 | 70.5 | 70.5% |
| 13 Dec 2024, 11:53 | 69 | 69% |
| 12 Nov 2024, 11:46 | 48.3 | 48.3% |
| 17 Oct 2024, 10:37 | 56.8 | 56.8% |
| 11 Sep 2024, 11:08 | 64.6 | 64.6% |
| 2 Aug 2024, 09:06 | 56.3 | 56.3% |
| 8 Jul 2024, 10:18 | 62.3 | 62.3% |
| 6 Mar 2024, 09:10 | 68.1 | 68.1% |
| 2 Feb 2024, 10:13 | 65.5 | 65.5% |
| 10 Jan 2024, 13:23 | 66.3 | 66.3% |
| 7 Dec 2023, 10:24 | 69.3 | 69.3% |
| 1 Nov 2023, 13:05 | 63.7 | 63.7% |
| 2 Oct 2023, 09:54 | 45.2 | 45.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
2.66 mg/l
Sampled 10 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 13:58 | 2.66 | 2.66 mg/l |
| 25 Jun 2026, 09:37 | 2.58 | 2.58 mg/l |
| 11 May 2026, 13:29 | 6.34 | 6.34 mg/l |
| 9 Apr 2026, 08:54 | 7.72 | 7.72 mg/l |
| 17 Mar 2026, 10:15 | 8.56 | 8.56 mg/l |
| 12 Feb 2026, 09:03 | 8.37 | 8.37 mg/l |
| 29 Jan 2026, 12:49 | 8.56 | 8.56 mg/l |
| 10 Dec 2025, 11:38 | 7.92 | 7.92 mg/l |
| 13 Nov 2025, 10:08 | 5.17 | 5.17 mg/l |
| 8 Oct 2025, 08:56 | 5.78 | 5.78 mg/l |
| 11 Sep 2025, 12:15 | 6.14 | 6.14 mg/l |
| 14 Aug 2025, 10:15 | 2.44 | 2.44 mg/l |
| 15 Jul 2025, 12:43 | 4.51 | 4.51 mg/l |
| 25 Jun 2025, 09:29 | 2.43 | 2.43 mg/l |
| 13 May 2025, 10:10 | 4.83 | 4.83 mg/l |
| 23 Apr 2025, 11:06 | 7.04 | 7.04 mg/l |
| 5 Mar 2025, 12:19 | 8.81 | 8.81 mg/l |
| 12 Feb 2025, 11:19 | 9.77 | 9.77 mg/l |
| 9 Jan 2025, 10:16 | 9.33 | 9.33 mg/l |
| 13 Dec 2024, 11:53 | 8.3 | 8.3 mg/l |
| 12 Nov 2024, 11:46 | 5.64 | 5.64 mg/l |
| 17 Oct 2024, 10:37 | 5.93 | 5.93 mg/l |
| 11 Sep 2024, 11:08 | 6.95 | 6.95 mg/l |
| 2 Aug 2024, 09:06 | 5.4 | 5.4 mg/l |
| 8 Jul 2024, 10:18 | 6.53 | 6.53 mg/l |
| 6 Mar 2024, 09:10 | 8.57 | 8.57 mg/l |
| 2 Feb 2024, 10:13 | 7.94 | 7.94 mg/l |
| 10 Jan 2024, 13:23 | 8.84 | 8.84 mg/l |
| 7 Dec 2023, 10:24 | 8.44 | 8.44 mg/l |
| 1 Nov 2023, 13:05 | 6.9 | 6.9 mg/l |
| 2 Oct 2023, 09:54 | 4.55 | 4.55 mg/l |
Water temperature
code 0076 · °C
20.8 °C
Sampled 10 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 13:58 | 20.8 | 20.8 °C |
| 25 Jun 2026, 09:37 | 19.2 | 19.2 °C |
| 11 May 2026, 13:29 | 9.4 | 9.4 °C |
| 9 Apr 2026, 08:54 | 11.1 | 11.1 °C |
| 17 Mar 2026, 10:15 | 9.1 | 9.1 °C |
| 12 Feb 2026, 09:03 | 7.9 | 7.9 °C |
| 29 Jan 2026, 12:49 | 6.1 | 6.1 °C |
| 10 Dec 2025, 11:38 | 10.2 | 10.2 °C |
| 13 Nov 2025, 10:08 | 12.3 | 12.3 °C |
| 8 Oct 2025, 08:56 | 11.7 | 11.7 °C |
| 11 Sep 2025, 12:15 | 14.2 | 14.2 °C |
| 14 Aug 2025, 10:15 | 16.2 | 16.2 °C |
| 15 Jul 2025, 12:43 | 15.6 | 15.6 °C |
| 25 Jun 2025, 09:29 | 15.9 | 15.9 °C |
| 13 May 2025, 10:10 | 12.7 | 12.7 °C |
| 23 Apr 2025, 11:06 | 10.1 | 10.1 °C |
| 5 Mar 2025, 12:19 | 5.2 | 5.2 °C |
| 12 Feb 2025, 11:19 | 5.2 | 5.2 °C |
| 9 Jan 2025, 10:16 | 3.6 | 3.6 °C |
| 13 Dec 2024, 11:53 | 7.3 | 7.3 °C |
| 12 Nov 2024, 11:46 | 8.5 | 8.5 °C |
| 17 Oct 2024, 10:37 | 13.3 | 13.3 °C |
| 11 Sep 2024, 11:08 | 12 | 12 °C |
| 2 Aug 2024, 09:06 | 17.2 | 17.2 °C |
| 8 Jul 2024, 10:18 | 13.1 | 13.1 °C |
| 6 Mar 2024, 09:10 | 5.5 | 5.5 °C |
| 2 Feb 2024, 10:13 | 7 | 7 °C |
| 10 Jan 2024, 13:23 | 3.3 | 3.3 °C |
| 7 Dec 2023, 10:24 | 6.8 | 6.8 °C |
| 1 Nov 2023, 13:05 | 11.7 | 11.7 °C |
| 2 Oct 2023, 09:54 | 15 | 15 °C |
pH
code 0061
6.63
Sampled 10 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 13:58 | 6.63 | 6.63 |
| 25 Jun 2026, 09:37 | 6.53 | 6.53 |
| 11 May 2026, 13:29 | 6.49 | 6.49 |
| 9 Apr 2026, 08:54 | 6.94 | 6.94 |
| 17 Mar 2026, 10:15 | 6.8 | 6.8 |
| 12 Feb 2026, 09:03 | 6.65 | 6.65 |
| 29 Jan 2026, 12:49 | 6.49 | 6.49 |
| 10 Dec 2025, 11:38 | 6.44 | 6.44 |
| 13 Nov 2025, 10:08 | 6.2 | 6.2 |
| 8 Oct 2025, 08:56 | 6.44 | 6.44 |
| 11 Sep 2025, 12:15 | 6.43 | 6.43 |
| 14 Aug 2025, 10:15 | 6.63 | 6.63 |
| 15 Jul 2025, 12:43 | 6.47 | 6.47 |
| 25 Jun 2025, 09:29 | 6.4 | 6.4 |
| 13 May 2025, 10:10 | 6.88 | 6.88 |
| 23 Apr 2025, 11:06 | 6.75 | 6.75 |
| 5 Mar 2025, 12:19 | 6.81 | 6.81 |
| 12 Feb 2025, 11:19 | 6.89 | 6.89 |
| 9 Jan 2025, 10:16 | 6.64 | 6.64 |
| 13 Dec 2024, 11:53 | 6.66 | 6.66 |
| 12 Nov 2024, 11:46 | 6.63 | 6.63 |
| 17 Oct 2024, 10:37 | 6.48 | 6.48 |
| 11 Sep 2024, 11:08 | 6.63 | 6.63 |
| 2 Aug 2024, 09:06 | 6.75 | 6.75 |
| 8 Jul 2024, 10:18 | 6.72 | 6.72 |
| 6 Mar 2024, 09:10 | 6.93 | 6.93 |
| 2 Feb 2024, 10:13 | 6.81 | 6.81 |
| 10 Jan 2024, 13:23 | 6.89 | 6.89 |
| 7 Dec 2023, 10:24 | 6.84 | 6.84 |
| 1 Nov 2023, 13:05 | 6.77 | 6.77 |
| 2 Oct 2023, 09:54 | 6.52 | 6.52 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.32 mg/l
Sampled 10 Jul 2026, 3 months ago · 29 results banked
Every result (29)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 13:58 | 0.32 | 0.32 mg/l |
| 25 Jun 2026, 09:37 | 0.41 | 0.41 mg/l |
| 11 May 2026, 13:29 | 0.18 | 0.18 mg/l |
| 9 Apr 2026, 08:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Mar 2026, 10:15 | 0.061 | 0.061 mg/l |
| 12 Feb 2026, 09:03 | 0.045 | 0.045 mg/l |
| 29 Jan 2026, 12:49 | 0.04 | 0.04 mg/l |
| 10 Dec 2025, 11:38 | 0.052 | 0.052 mg/l |
| 13 Nov 2025, 10:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Oct 2025, 08:56 | 0.041 | 0.041 mg/l |
| 11 Sep 2025, 12:15 | 0.065 | 0.065 mg/l |
| 14 Aug 2025, 10:15 | 0.14 | 0.14 mg/l |
| 15 Jul 2025, 12:43 | 0.16 | 0.16 mg/l |
| 25 Jun 2025, 09:29 | 0.14 | 0.14 mg/l |
| 13 May 2025, 10:10 | 0.1 | 0.1 mg/l |
| 5 Mar 2025, 12:19 | 0.46 | 0.46 mg/l |
| 12 Feb 2025, 11:19 | 0.065 | 0.065 mg/l |
| 9 Jan 2025, 10:16 | 0.12 | 0.12 mg/l |
| 13 Dec 2024, 11:53 | 0.074 | 0.074 mg/l |
| 12 Nov 2024, 11:46 | 0.2 | 0.2 mg/l |
| 17 Oct 2024, 10:37 | 0.036 | 0.036 mg/l |
| 11 Sep 2024, 11:08 | 0.1 | 0.1 mg/l |
| 2 Aug 2024, 09:06 | 0.37 | 0.37 mg/l |
| 8 Jul 2024, 10:18 | 0.13 | 0.13 mg/l |
| 6 Mar 2024, 09:10 | 0.076 | 0.076 mg/l |
| 10 Jan 2024, 13:23 | 0.22 | 0.22 mg/l |
| 7 Dec 2023, 10:24 | 0.068 | 0.068 mg/l |
| 1 Nov 2023, 13:05 | 0.053 | 0.053 mg/l |
| 2 Oct 2023, 09:54 | 0.17 | 0.17 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
below 0.196 mg/l (not detected above this)
Sampled 10 Jul 2026, 3 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 13:58 | <0.196 | below 0.196 mg/l (not detected above this) |
| 25 Jun 2026, 09:37 | <0.196 | below 0.196 mg/l (not detected above this) |
| 11 May 2026, 13:29 | <0.196 | below 0.196 mg/l (not detected above this) |
| 9 Apr 2026, 08:54 | 0.236 | 0.236 mg/l |
| 17 Mar 2026, 10:15 | 0.206 | 0.206 mg/l |
| 12 Feb 2026, 09:03 | 0.376 | 0.376 mg/l |
| 29 Jan 2026, 12:49 | 0.586 | 0.586 mg/l |
| 10 Dec 2025, 11:38 | 0.686 | 0.686 mg/l |
| 13 Nov 2025, 10:08 | <0.196 | below 0.196 mg/l (not detected above this) |
| 8 Oct 2025, 08:56 | 0.226 | 0.226 mg/l |
| 11 Sep 2025, 12:15 | <0.196 | below 0.196 mg/l (not detected above this) |
| 14 Aug 2025, 10:15 | <0.196 | below 0.196 mg/l (not detected above this) |
| 15 Jul 2025, 12:43 | <0.196 | below 0.196 mg/l (not detected above this) |
| 25 Jun 2025, 09:29 | <0.196 | below 0.196 mg/l (not detected above this) |
| 13 May 2025, 10:10 | <0.196 | below 0.196 mg/l (not detected above this) |
| 5 Mar 2025, 12:19 | 0.226 | 0.226 mg/l |
| 12 Feb 2025, 11:19 | 0.236 | 0.236 mg/l |
| 9 Jan 2025, 10:16 | 0.336 | 0.336 mg/l |
| 13 Dec 2024, 11:53 | <0.196 | below 0.196 mg/l (not detected above this) |
| 12 Nov 2024, 11:46 | <0.196 | below 0.196 mg/l (not detected above this) |
| 17 Oct 2024, 10:37 | <0.196 | below 0.196 mg/l (not detected above this) |
| 11 Sep 2024, 11:08 | <0.196 | below 0.196 mg/l (not detected above this) |
| 2 Aug 2024, 09:06 | 0.325 | 0.325 mg/l |
| 8 Jul 2024, 10:18 | <0.196 | below 0.196 mg/l (not detected above this) |
| 6 Mar 2024, 09:10 | 0.246 | 0.246 mg/l |
| 2 Feb 2024, 10:13 | <0.196 | below 0.196 mg/l (not detected above this) |
| 10 Jan 2024, 13:23 | 0.236 | 0.236 mg/l |
| 7 Dec 2023, 10:24 | <0.196 | below 0.196 mg/l (not detected above this) |
| 1 Nov 2023, 13:05 | 0.306 | 0.306 mg/l |
| 2 Oct 2023, 09:54 | 0.193 | 0.193 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.03 mg/l
Sampled 10 Jul 2026, 3 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 13:58 | 0.03 | 0.03 mg/l |
| 25 Jun 2026, 09:37 | 0.042 | 0.042 mg/l |
| 11 May 2026, 13:29 | 0.051 | 0.051 mg/l |
| 9 Apr 2026, 08:54 | 0.037 | 0.037 mg/l |
| 17 Mar 2026, 10:15 | 0.041 | 0.041 mg/l |
| 12 Feb 2026, 09:03 | 0.041 | 0.041 mg/l |
| 29 Jan 2026, 12:49 | 0.028 | 0.028 mg/l |
| 10 Dec 2025, 11:38 | 0.036 | 0.036 mg/l |
| 13 Nov 2025, 10:08 | 0.04 | 0.04 mg/l |
| 8 Oct 2025, 08:56 | 0.025 | 0.025 mg/l |
| 11 Sep 2025, 12:15 | 0.036 | 0.036 mg/l |
| 14 Aug 2025, 10:15 | 0.05 | 0.05 mg/l |
| 15 Jul 2025, 12:43 | 0.013 | 0.013 mg/l |
| 25 Jun 2025, 09:29 | 0.035 | 0.035 mg/l |
| 13 May 2025, 10:10 | 0.032 | 0.032 mg/l |
| 5 Mar 2025, 12:19 | 0.051 | 0.051 mg/l |
| 12 Feb 2025, 11:19 | 0.042 | 0.042 mg/l |
| 9 Jan 2025, 10:16 | 0.046 | 0.046 mg/l |
| 13 Dec 2024, 11:53 | 0.038 | 0.038 mg/l |
| 12 Nov 2024, 11:46 | 0.069 | 0.069 mg/l |
| 17 Oct 2024, 10:37 | 0.063 | 0.063 mg/l |
| 11 Sep 2024, 11:08 | 0.056 | 0.056 mg/l |
| 2 Aug 2024, 09:06 | 0.092 | 0.092 mg/l |
| 8 Jul 2024, 10:18 | 0.051 | 0.051 mg/l |
| 6 Mar 2024, 09:10 | 0.055 | 0.055 mg/l |
| 2 Feb 2024, 10:13 | 0.041 | 0.041 mg/l |
| 10 Jan 2024, 13:23 | 0.062 | 0.062 mg/l |
| 7 Dec 2023, 10:24 | 0.054 | 0.054 mg/l |
| 1 Nov 2023, 13:05 | 0.043 | 0.043 mg/l |
| 2 Oct 2023, 09:54 | 0.023 | 0.023 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
272 µS/cm
Sampled 10 Jul 2026, 3 months ago · 31 results banked
Every result (31)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Jul 2026, 13:58 | 272 | 272 µS/cm |
| 25 Jun 2026, 09:37 | 306 | 306 µS/cm |
| 11 May 2026, 13:29 | 309 | 309 µS/cm |
| 9 Apr 2026, 08:54 | 335 | 335 µS/cm |
| 17 Mar 2026, 10:15 | 357 | 357 µS/cm |
| 12 Feb 2026, 09:03 | 320 | 320 µS/cm |
| 29 Jan 2026, 12:49 | 327 | 327 µS/cm |
| 10 Dec 2025, 11:38 | 494 | 494 µS/cm |
| 13 Nov 2025, 10:08 | 471 | 471 µS/cm |
| 8 Oct 2025, 08:56 | 309 | 309 µS/cm |
| 11 Sep 2025, 12:15 | 283 | 283 µS/cm |
| 14 Aug 2025, 10:15 | 293 | 293 µS/cm |
| 15 Jul 2025, 12:43 | 316 | 316 µS/cm |
| 25 Jun 2025, 09:29 | 313 | 313 µS/cm |
| 13 May 2025, 10:10 | 364 | 364 µS/cm |
| 23 Apr 2025, 11:06 | 392 | 392 µS/cm |
| 5 Mar 2025, 12:19 | 384 | 384 µS/cm |
| 12 Feb 2025, 11:19 | 423 | 423 µS/cm |
| 9 Jan 2025, 10:16 | 419 | 419 µS/cm |
| 13 Dec 2024, 11:53 | 333 | 333 µS/cm |
| 12 Nov 2024, 11:46 | 336 | 336 µS/cm |
| 17 Oct 2024, 10:37 | 290 | 290 µS/cm |
| 11 Sep 2024, 11:08 | 346 | 346 µS/cm |
| 2 Aug 2024, 09:06 | 248 | 248 µS/cm |
| 8 Jul 2024, 10:18 | 303 | 303 µS/cm |
| 6 Mar 2024, 09:10 | 344 | 344 µS/cm |
| 2 Feb 2024, 10:13 | 405 | 405 µS/cm |
| 10 Jan 2024, 13:23 | 330 | 330 µS/cm |
| 7 Dec 2023, 10:24 | 399 | 399 µS/cm |
| 1 Nov 2023, 13:05 | 353 | 353 µS/cm |
| 2 Oct 2023, 09:54 | 330 | 330 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 | 31 | Oct 2023 – Jul 2026 | 29.8% 10 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 31 | Oct 2023 – Jul 2026 | 2.66 mg/l 10 Jul 2026 |
| Temperature of Water 0076 | River water | 31 | Oct 2023 – Jul 2026 | 20.8 °C 10 Jul 2026 |
| pH 0061 | River water | 31 | Oct 2023 – Jul 2026 | 6.63 10 Jul 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 29 | Oct 2023 – Jul 2026 | 0.32 mg/l 10 Jul 2026 |
| Nitrate as N 0117 | River water | 30 | Oct 2023 – Jul 2026 | below 0.196 mg/l 10 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 30 | Oct 2023 – Jul 2026 | 0.03 mg/l 10 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 31 | Oct 2023 – Jul 2026 | 272 µS/cm 10 Jul 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 29 | Oct 2023 – Jul 2026 | 59 mg/l 10 Jul 2026 |
| Ammonia un-ionised as N 0119 | River water | 29 | Oct 2023 – Jul 2026 | 0.00057 mg/l 10 Jul 2026 |
| BOD : 5 Day ATU 0085 | River water | 26 | Oct 2023 – Mar 2026 | 1 mg/l 17 Mar 2026 |
| Nitrite as N 0118 | River water | 30 | Oct 2023 – Jul 2026 | below 0.004 mg/l 10 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 30 | Oct 2023 – Jul 2026 | below 0.2 mg/l 10 Jul 2026 |
| No flow /No sample 7668 | River water | 1 | Jun 2024 – Jun 2024 | No flow/discharge at sampling point 3 Jun 2024 |
| Phosphorus, Total as P 0348 | River water | 8 | Aug 2025 – Mar 2026 | 0.063 mg/l 17 Mar 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.