River Stour upstream of Bourton sewage treatment works
EA name: RIVER STOUR U/S BOURTON STW
Environment Agency sampling point SW-50310289 · 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
- 11 Aug 2026, 10:1151 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 27 since 26 Jun 2024 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 378324, 130234As published, to the nearest 1 m. Open in a map
- River, by its own name
- Stour
- River, by the map
- River StourPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Gillingham Le Neubourg Way On the River Stour · 5.3 km along the river
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Environmental monitoring statutory (EU directives) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
85.4%
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 10:11 | 85.4 | 85.4% |
| 3 Jul 2026, 10:21 | 96.3 | 96.3% |
| 10 Jun 2026, 11:53 | 90.9 | 90.9% |
| 5 May 2026, 11:55 | 95.8 | 95.8% |
| 9 Apr 2026, 12:31 | 102.3 | 102.3% |
| 13 Mar 2026, 10:29 | 98.4 | 98.4% |
| 23 Feb 2026, 10:18 | 93.1 | 93.1% |
| 29 Jan 2026, 10:47 | 100.2 | 100.2% |
| 4 Dec 2025, 12:50 | 98 | 98% |
| 3 Nov 2025, 10:45 | 86.9 | 86.9% |
| 6 Oct 2025, 13:24 | 96.3 | 96.3% |
| 30 Sep 2025, 10:52 | 90.9 | 90.9% |
| 15 Sep 2025, 09:11 | 92.9 | 92.9% |
| 27 Aug 2025, 09:20 | 90.1 | 90.1% |
| 18 Aug 2025, 12:34 | 87.4 | 87.4% |
| 9 Jul 2025, 09:22 | 90.3 | 90.3% |
| 26 Jun 2025, 12:47 | 90.5 | 90.5% |
| 28 Apr 2025, 13:27 | 103.2 | 103.2% |
| 6 Feb 2025, 11:56 | 100 | 100% |
| 22 Jan 2025, 11:40 | 100.6 | 100.6% |
| 4 Dec 2024, 12:54 | 98.6 | 98.6% |
| 21 Nov 2024, 12:48 | 99.5 | 99.5% |
| 22 Oct 2024, 09:05 | 97.3 | 97.3% |
| 16 Sep 2024, 13:11 | 93.2 | 93.2% |
| 22 Aug 2024, 11:19 | 93.4 | 93.4% |
| 24 Jul 2024, 13:48 | 93.6 | 93.6% |
| 26 Jun 2024, 12:32 | 93.9 | 93.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.34 mg/l
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 10:11 | 8.34 | 8.34 mg/l |
| 3 Jul 2026, 10:21 | 9.46 | 9.46 mg/l |
| 10 Jun 2026, 11:53 | 9.51 | 9.51 mg/l |
| 5 May 2026, 11:55 | 10 | 10 mg/l |
| 9 Apr 2026, 12:31 | 10.8 | 10.8 mg/l |
| 13 Mar 2026, 10:29 | 11.6 | 11.6 mg/l |
| 23 Feb 2026, 10:18 | 10.9 | 10.9 mg/l |
| 29 Jan 2026, 10:47 | 12.2 | 12.2 mg/l |
| 4 Dec 2025, 12:50 | 11.7 | 11.7 mg/l |
| 3 Nov 2025, 10:45 | 9.43 | 9.43 mg/l |
| 6 Oct 2025, 13:24 | 10 | 10 mg/l |
| 30 Sep 2025, 10:52 | 9.86 | 9.86 mg/l |
| 15 Sep 2025, 09:11 | 9.72 | 9.72 mg/l |
| 27 Aug 2025, 09:20 | 8.81 | 8.81 mg/l |
| 18 Aug 2025, 12:34 | 8.42 | 8.42 mg/l |
| 9 Jul 2025, 09:22 | 8.85 | 8.85 mg/l |
| 26 Jun 2025, 12:47 | 8.63 | 8.63 mg/l |
| 28 Apr 2025, 13:27 | 10.4 | 10.4 mg/l |
| 6 Feb 2025, 11:56 | 12.6 | 12.6 mg/l |
| 22 Jan 2025, 11:40 | 12.5 | 12.5 mg/l |
| 4 Dec 2024, 12:54 | 11.8 | 11.8 mg/l |
| 21 Nov 2024, 12:48 | 12.4 | 12.4 mg/l |
| 22 Oct 2024, 09:05 | 10.8 | 10.8 mg/l |
| 16 Sep 2024, 13:11 | 9.71 | 9.71 mg/l |
| 22 Aug 2024, 11:19 | 9.27 | 9.27 mg/l |
| 24 Jul 2024, 13:48 | 8.8 | 8.8 mg/l |
| 26 Jun 2024, 12:32 | 8.88 | 8.88 mg/l |
Water temperature
code 0076 · °C
16.4 °C
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 10:11 | 16.4 | 16.4 °C |
| 3 Jul 2026, 10:21 | 16.1 | 16.1 °C |
| 10 Jun 2026, 11:53 | 13.2 | 13.2 °C |
| 5 May 2026, 11:55 | 13.3 | 13.3 °C |
| 9 Apr 2026, 12:31 | 12.7 | 12.7 °C |
| 13 Mar 2026, 10:29 | 8.3 | 8.3 °C |
| 23 Feb 2026, 10:18 | 8.4 | 8.4 °C |
| 29 Jan 2026, 10:47 | 6.8 | 6.8 °C |
| 4 Dec 2025, 12:50 | 7.6 | 7.6 °C |
| 3 Nov 2025, 10:45 | 11.6 | 11.6 °C |
| 6 Oct 2025, 13:24 | 13.4 | 13.4 °C |
| 30 Sep 2025, 10:52 | 11.6 | 11.6 °C |
| 15 Sep 2025, 09:11 | 13.2 | 13.2 °C |
| 27 Aug 2025, 09:20 | 16.3 | 16.3 °C |
| 18 Aug 2025, 12:34 | 17 | 17 °C |
| 9 Jul 2025, 09:22 | 16.2 | 16.2 °C |
| 26 Jun 2025, 12:47 | 17.5 | 17.5 °C |
| 28 Apr 2025, 13:27 | 14.9 | 14.9 °C |
| 6 Feb 2025, 11:56 | 5.4 | 5.4 °C |
| 22 Jan 2025, 11:40 | 6 | 6 °C |
| 4 Dec 2024, 12:54 | 7.5 | 7.5 °C |
| 21 Nov 2024, 12:48 | 5.9 | 5.9 °C |
| 22 Oct 2024, 09:05 | 10.7 | 10.7 °C |
| 16 Sep 2024, 13:11 | 13.4 | 13.4 °C |
| 22 Aug 2024, 11:19 | 15.6 | 15.6 °C |
| 24 Jul 2024, 13:48 | 18.2 | 18.2 °C |
| 26 Jun 2024, 12:32 | 17.9 | 17.9 °C |
pH
code 0061
8.15
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 10:11 | 8.15 | 8.15 |
| 3 Jul 2026, 10:21 | 8.08 | 8.08 |
| 10 Jun 2026, 11:53 | 7.99 | 7.99 |
| 5 May 2026, 11:55 | 8.03 | 8.03 |
| 9 Apr 2026, 12:31 | 8.24 | 8.24 |
| 13 Mar 2026, 10:29 | 7.8 | 7.8 |
| 23 Feb 2026, 10:18 | 8.08 | 8.08 |
| 29 Jan 2026, 10:47 | 8.01 | 8.01 |
| 4 Dec 2025, 12:50 | 7.76 | 7.76 |
| 3 Nov 2025, 10:45 | 7.89 | 7.89 |
| 6 Oct 2025, 13:24 | 8.12 | 8.12 |
| 30 Sep 2025, 10:52 | 8.07 | 8.07 |
| 15 Sep 2025, 09:11 | 8.03 | 8.03 |
| 27 Aug 2025, 09:20 | 8.13 | 8.13 |
| 18 Aug 2025, 12:34 | 8 | 8 |
| 9 Jul 2025, 09:22 | 7.92 | 7.92 |
| 26 Jun 2025, 12:47 | 7.87 | 7.87 |
| 28 Apr 2025, 13:27 | 8.3 | 8.3 |
| 6 Feb 2025, 11:56 | 8.1 | 8.1 |
| 22 Jan 2025, 11:40 | 7.99 | 7.99 |
| 4 Dec 2024, 12:54 | 7.96 | 7.96 |
| 21 Nov 2024, 12:48 | 7.91 | 7.91 |
| 22 Oct 2024, 09:05 | 8.07 | 8.07 |
| 16 Sep 2024, 13:11 | 8.24 | 8.24 |
| 22 Aug 2024, 11:19 | 8 | 8 |
| 24 Jul 2024, 13:48 | 8.11 | 8.11 |
| 26 Jun 2024, 12:32 | 8.17 | 8.17 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.037 mg/l
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 10:11 | 0.037 | 0.037 mg/l |
| 3 Jul 2026, 10:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jun 2026, 11:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 May 2026, 11:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Apr 2026, 12:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Mar 2026, 10:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Feb 2026, 10:18 | 0.13 | 0.13 mg/l |
| 29 Jan 2026, 10:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Dec 2025, 12:50 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Nov 2025, 10:45 | 0.13 | 0.13 mg/l |
| 6 Oct 2025, 13:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Sep 2025, 10:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Sep 2025, 09:11 | 0.045 | 0.045 mg/l |
| 27 Aug 2025, 09:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Aug 2025, 12:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Jul 2025, 09:22 | 0.087 | 0.087 mg/l |
| 26 Jun 2025, 12:47 | 0.058 | 0.058 mg/l |
| 28 Apr 2025, 13:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Feb 2025, 11:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jan 2025, 11:40 | 0.16 | 0.16 mg/l |
| 4 Dec 2024, 12:54 | 0.05 | 0.05 mg/l |
| 21 Nov 2024, 12:48 | 0.044 | 0.044 mg/l |
| 22 Oct 2024, 09:05 | 0.031 | 0.031 mg/l |
| 16 Sep 2024, 13:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Aug 2024, 11:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Jul 2024, 13:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Jun 2024, 12:32 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.17 mg/l
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 10:11 | 2.17 | 2.17 mg/l |
| 3 Jul 2026, 10:21 | 1.89 | 1.89 mg/l |
| 10 Jun 2026, 11:53 | 1.78 | 1.78 mg/l |
| 5 May 2026, 11:55 | 1.69 | 1.69 mg/l |
| 9 Apr 2026, 12:31 | 1.59 | 1.59 mg/l |
| 13 Mar 2026, 10:29 | 1.4 | 1.4 mg/l |
| 23 Feb 2026, 10:18 | 0.887 | 0.887 mg/l |
| 29 Jan 2026, 10:47 | 1.7 | 1.7 mg/l |
| 4 Dec 2025, 12:50 | 1.89 | 1.89 mg/l |
| 3 Nov 2025, 10:45 | 2.24 | 2.24 mg/l |
| 6 Oct 2025, 13:24 | 1.99 | 1.99 mg/l |
| 30 Sep 2025, 10:52 | 2.89 | 2.89 mg/l |
| 15 Sep 2025, 09:11 | 1.49 | 1.49 mg/l |
| 27 Aug 2025, 09:20 | 1.59 | 1.59 mg/l |
| 18 Aug 2025, 12:34 | 2.09 | 2.09 mg/l |
| 9 Jul 2025, 09:22 | 2.07 | 2.07 mg/l |
| 26 Jun 2025, 12:47 | 1.68 | 1.68 mg/l |
| 28 Apr 2025, 13:27 | 1.79 | 1.79 mg/l |
| 6 Feb 2025, 11:56 | 2.19 | 2.19 mg/l |
| 22 Jan 2025, 11:40 | 2.39 | 2.39 mg/l |
| 4 Dec 2024, 12:54 | 2.18 | 2.18 mg/l |
| 21 Nov 2024, 12:48 | 1.89 | 1.89 mg/l |
| 22 Oct 2024, 09:05 | 1.68 | 1.68 mg/l |
| 16 Sep 2024, 13:11 | 2.49 | 2.49 mg/l |
| 22 Aug 2024, 11:19 | 2.27 | 2.27 mg/l |
| 24 Jul 2024, 13:48 | 1.49 | 1.49 mg/l |
| 26 Jun 2024, 12:32 | 1.89 | 1.89 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.15 mg/l
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 10:11 | 0.15 | 0.15 mg/l |
| 3 Jul 2026, 10:21 | 0.15 | 0.15 mg/l |
| 10 Jun 2026, 11:53 | 0.13 | 0.13 mg/l |
| 5 May 2026, 11:55 | 0.098 | 0.098 mg/l |
| 9 Apr 2026, 12:31 | 0.081 | 0.081 mg/l |
| 13 Mar 2026, 10:29 | 0.092 | 0.092 mg/l |
| 23 Feb 2026, 10:18 | 0.097 | 0.097 mg/l |
| 29 Jan 2026, 10:47 | 0.096 | 0.096 mg/l |
| 4 Dec 2025, 12:50 | 0.11 | 0.11 mg/l |
| 3 Nov 2025, 10:45 | 0.11 | 0.11 mg/l |
| 6 Oct 2025, 13:24 | 0.079 | 0.079 mg/l |
| 30 Sep 2025, 10:52 | 0.14 | 0.14 mg/l |
| 15 Sep 2025, 09:11 | 0.09 | 0.09 mg/l |
| 27 Aug 2025, 09:20 | 0.11 | 0.11 mg/l |
| 18 Aug 2025, 12:34 | 0.12 | 0.12 mg/l |
| 9 Jul 2025, 09:22 | 0.17 | 0.17 mg/l |
| 26 Jun 2025, 12:47 | 0.15 | 0.15 mg/l |
| 28 Apr 2025, 13:27 | 0.067 | 0.067 mg/l |
| 6 Feb 2025, 11:56 | 0.1 | 0.1 mg/l |
| 22 Jan 2025, 11:40 | 0.12 | 0.12 mg/l |
| 4 Dec 2024, 12:54 | 0.1 | 0.1 mg/l |
| 21 Nov 2024, 12:48 | 0.1 | 0.1 mg/l |
| 22 Oct 2024, 09:05 | 0.12 | 0.12 mg/l |
| 16 Sep 2024, 13:11 | 0.15 | 0.15 mg/l |
| 22 Aug 2024, 11:19 | 0.14 | 0.14 mg/l |
| 24 Jul 2024, 13:48 | 0.14 | 0.14 mg/l |
| 26 Jun 2024, 12:32 | 0.13 | 0.13 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
347 µS/cm
Sampled 11 Aug 2026, 51 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Aug 2026, 10:11 | 347 | 347 µS/cm |
| 3 Jul 2026, 10:21 | 389 | 389 µS/cm |
| 10 Jun 2026, 11:53 | 343 | 343 µS/cm |
| 5 May 2026, 11:55 | 329 | 329 µS/cm |
| 9 Apr 2026, 12:31 | 319 | 319 µS/cm |
| 13 Mar 2026, 10:29 | 270 | 270 µS/cm |
| 23 Feb 2026, 10:18 | 411 | 411 µS/cm |
| 29 Jan 2026, 10:47 | 242 | 242 µS/cm |
| 4 Dec 2025, 12:50 | 299 | 299 µS/cm |
| 3 Nov 2025, 10:45 | 602 | 602 µS/cm |
| 6 Oct 2025, 13:24 | 360 | 360 µS/cm |
| 30 Sep 2025, 10:52 | 388 | 388 µS/cm |
| 15 Sep 2025, 09:11 | 338 | 338 µS/cm |
| 27 Aug 2025, 09:20 | 332 | 332 µS/cm |
| 18 Aug 2025, 12:34 | 343 | 343 µS/cm |
| 9 Jul 2025, 09:22 | 342 | 342 µS/cm |
| 26 Jun 2025, 12:47 | 352 | 352 µS/cm |
| 28 Apr 2025, 13:27 | 329 | 329 µS/cm |
| 6 Feb 2025, 11:56 | 297 | 297 µS/cm |
| 22 Jan 2025, 11:40 | 325 | 325 µS/cm |
| 4 Dec 2024, 12:54 | 305 | 305 µS/cm |
| 21 Nov 2024, 12:48 | 272 | 272 µS/cm |
| 22 Oct 2024, 09:05 | 278 | 278 µS/cm |
| 16 Sep 2024, 13:11 | 434 | 434 µS/cm |
| 22 Aug 2024, 11:19 | 352 | 352 µS/cm |
| 24 Jul 2024, 13:48 | 348 | 348 µS/cm |
| 26 Jun 2024, 12:32 | 367 | 367 µS/cm |
Everything measured here
13 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 13 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 27 | Jun 2024 – Aug 2026 | 85.4% 11 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Jun 2024 – Aug 2026 | 8.34 mg/l 11 Aug 2026 |
| Temperature of Water 0076 | River water | 27 | Jun 2024 – Aug 2026 | 16.4 °C 11 Aug 2026 |
| pH 0061 | River water | 27 | Jun 2024 – Aug 2026 | 8.15 11 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Jun 2024 – Aug 2026 | 0.037 mg/l 11 Aug 2026 |
| Nitrate as N 0117 | River water | 27 | Jun 2024 – Aug 2026 | 2.17 mg/l 11 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 27 | Jun 2024 – Aug 2026 | 0.15 mg/l 11 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Jun 2024 – Aug 2026 | 347 µS/cm 11 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 26 | Jun 2024 – Aug 2026 | 120 mg/l 11 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Jun 2024 – Aug 2026 | 0.00108 mg/l 11 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 24 | Jun 2024 – May 2026 | 1.8 mg/l 5 May 2026 |
| Nitrite as N 0118 | River water | 27 | Jun 2024 – Aug 2026 | 0.029 mg/l 11 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Jun 2024 – Aug 2026 | 2.2 mg/l 11 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.