River Ouse Bourton Mill
EA name: R.OUSE BOURTON MILL
Environment Agency sampling point AN-01M07 · 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, 12:2624 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 22 since 5 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 470789, 233419As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- River Great OusePlaced by position alone, on a line whose map name differs from its own, 1 m from the line.
- Next gauge downstream
- THORNBOROUGH MILL SLUICE AUTOMATION 4.4 km along the riverThornborough On the River Great Ouse · 4.4 km along the river
- Nearest gauge upstream
- Buckingham On the River Great Ouse · 3.0 km along the river
- Why it was sampled
- Monitoring (national agency policy) (16 samples)
Environmental monitoring statutory (EU directives) (6 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
85.8%
Sampled 7 Sep 2026, 24 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 85.8 | 85.8% |
| 12 Aug 2026, 09:36 | 80.9 | 80.9% |
| 1 Jul 2026, 10:41 | 83.9 | 83.9% |
| 12 Jun 2026, 10:58 | 93 | 93% |
| 22 May 2026, 11:00 | 89.4 | 89.4% |
| 10 Apr 2026, 14:03 | 119.8 | 119.8% |
| 7 Mar 2025, 12:35 | 107.4 | 107.4% |
| 10 Feb 2025, 13:24 | 101.1 | 101.1% |
| 14 Jan 2025, 12:31 | 101.2 | 101.2% |
| 5 Dec 2024, 11:38 | 97.4 | 97.4% |
| 1 Nov 2024, 10:17 | 95.1 | 95.1% |
| 17 Oct 2024, 12:36 | 95.6 | 95.6% |
| 13 Sep 2024, 11:18 | 91.6 | 91.6% |
| 1 Aug 2024, 11:31 | 96.6 | 96.6% |
| 1 Jul 2024, 11:36 | 98.3 | 98.3% |
| 3 Jun 2024, 13:25 | 100.3 | 100.3% |
| 8 Mar 2024, 13:19 | 102.8 | 102.8% |
| 8 Feb 2024, 12:09 | 98.2 | 98.2% |
| 4 Jan 2024, 13:29 | 95.6 | 95.6% |
| 4 Dec 2023, 11:54 | 97.4 | 97.4% |
| 2 Nov 2023, 10:54 | 96.1 | 96.1% |
| 5 Oct 2023, 14:08 | 96.5 | 96.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.2 mg/l
Sampled 7 Sep 2026, 24 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 8.2 | 8.2 mg/l |
| 12 Aug 2026, 09:36 | 7.8 | 7.8 mg/l |
| 1 Jul 2026, 10:41 | 7.92 | 7.92 mg/l |
| 12 Jun 2026, 10:58 | 9.56 | 9.56 mg/l |
| 22 May 2026, 11:00 | 8.97 | 8.97 mg/l |
| 10 Apr 2026, 14:03 | 13.2 | 13.2 mg/l |
| 7 Mar 2025, 12:35 | 12.4 | 12.4 mg/l |
| 10 Feb 2025, 13:24 | 12.6 | 12.6 mg/l |
| 14 Jan 2025, 12:31 | 12.4 | 12.4 mg/l |
| 5 Dec 2024, 11:38 | 11.1 | 11.1 mg/l |
| 1 Nov 2024, 10:17 | 10.5 | 10.5 mg/l |
| 17 Oct 2024, 12:36 | 9.96 | 9.96 mg/l |
| 13 Sep 2024, 11:18 | 10.1 | 10.1 mg/l |
| 1 Aug 2024, 11:31 | 9.07 | 9.07 mg/l |
| 1 Jul 2024, 11:36 | 9.8 | 9.8 mg/l |
| 3 Jun 2024, 13:25 | 10.1 | 10.1 mg/l |
| 8 Mar 2024, 13:19 | 12.1 | 12.1 mg/l |
| 8 Feb 2024, 12:09 | 11.9 | 11.9 mg/l |
| 4 Jan 2024, 13:29 | 11.3 | 11.3 mg/l |
| 4 Dec 2023, 11:54 | 11.9 | 11.9 mg/l |
| 2 Nov 2023, 10:54 | 10.7 | 10.7 mg/l |
| 5 Oct 2023, 14:08 | 9.88 | 9.88 mg/l |
Water temperature
code 0076 · °C
17.4 °C
Sampled 7 Sep 2026, 24 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 17.4 | 17.4 °C |
| 12 Aug 2026, 09:36 | 17 | 17 °C |
| 1 Jul 2026, 10:41 | 18 | 18 °C |
| 12 Jun 2026, 10:58 | 14 | 14 °C |
| 22 May 2026, 11:00 | 15.1 | 15.1 °C |
| 10 Apr 2026, 14:03 | 11 | 11 °C |
| 7 Mar 2025, 12:35 | 9 | 9 °C |
| 10 Feb 2025, 13:24 | 5.8 | 5.8 °C |
| 14 Jan 2025, 12:31 | 6.5 | 6.5 °C |
| 5 Dec 2024, 11:38 | 9.6 | 9.6 °C |
| 1 Nov 2024, 10:17 | 10.7 | 10.7 °C |
| 17 Oct 2024, 12:36 | 13.4 | 13.4 °C |
| 13 Sep 2024, 11:18 | 10.8 | 10.8 °C |
| 1 Aug 2024, 11:31 | 18.3 | 18.3 °C |
| 1 Jul 2024, 11:36 | 15.4 | 15.4 °C |
| 3 Jun 2024, 13:25 | 14.8 | 14.8 °C |
| 8 Mar 2024, 13:19 | 8.1 | 8.1 °C |
| 8 Feb 2024, 12:09 | 7 | 7 °C |
| 4 Jan 2024, 13:29 | 7.9 | 7.9 °C |
| 4 Dec 2023, 11:54 | 6.8 | 6.8 °C |
| 2 Nov 2023, 10:54 | 10.6 | 10.6 °C |
| 5 Oct 2023, 14:08 | 14.2 | 14.2 °C |
pH
code 0061
8.09
Sampled 7 Sep 2026, 24 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 8.09 | 8.09 |
| 12 Aug 2026, 09:36 | 7.93 | 7.93 |
| 1 Jul 2026, 10:41 | 7.96 | 7.96 |
| 12 Jun 2026, 10:58 | 8.07 | 8.07 |
| 22 May 2026, 11:00 | 8.04 | 8.04 |
| 10 Apr 2026, 14:03 | 8.44 | 8.44 |
| 7 Mar 2025, 12:35 | 8.27 | 8.27 |
| 10 Feb 2025, 13:24 | 8.22 | 8.22 |
| 14 Jan 2025, 12:31 | 8.18 | 8.18 |
| 5 Dec 2024, 11:38 | 8.06 | 8.06 |
| 1 Nov 2024, 10:17 | 7.9 | 7.9 |
| 17 Oct 2024, 12:36 | 7.93 | 7.93 |
| 13 Sep 2024, 11:18 | 8.08 | 8.08 |
| 1 Aug 2024, 11:31 | 8.11 | 8.11 |
| 1 Jul 2024, 11:36 | 8.15 | 8.15 |
| 3 Jun 2024, 13:25 | 8.36 | 8.36 |
| 8 Mar 2024, 13:19 | 8.17 | 8.17 |
| 8 Feb 2024, 12:09 | 8.12 | 8.12 |
| 4 Jan 2024, 13:29 | 7.95 | 7.95 |
| 4 Dec 2023, 11:54 | 8 | 8 |
| 2 Nov 2023, 10:54 | 8.06 | 8.06 |
| 5 Oct 2023, 14:08 | 8.21 | 8.21 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 7 Sep 2026, 24 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Aug 2026, 09:36 | 0.039 | 0.039 mg/l |
| 1 Jul 2026, 10:41 | 0.037 | 0.037 mg/l |
| 12 Jun 2026, 10:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 May 2026, 11:00 | 0.042 | 0.042 mg/l |
| 10 Apr 2026, 14:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Mar 2025, 12:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Feb 2025, 13:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Jan 2025, 12:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Dec 2024, 11:38 | 0.033 | 0.033 mg/l |
| 1 Nov 2024, 10:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Oct 2024, 12:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Sep 2024, 11:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Aug 2024, 11:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Jul 2024, 11:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Jun 2024, 13:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Mar 2024, 13:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Feb 2024, 12:09 | 0.06 | 0.06 mg/l |
| 4 Jan 2024, 13:29 | 0.053 | 0.053 mg/l |
| 4 Dec 2023, 11:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Nov 2023, 10:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Oct 2023, 14:08 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
6.98 mg/l
Sampled 7 Sep 2026, 24 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 6.98 | 6.98 mg/l |
| 12 Aug 2026, 09:36 | 5.49 | 5.49 mg/l |
| 1 Jul 2026, 10:41 | 2.99 | 2.99 mg/l |
| 12 Jun 2026, 10:58 | 5.19 | 5.19 mg/l |
| 22 May 2026, 11:00 | 5.47 | 5.47 mg/l |
| 10 Apr 2026, 14:03 | 6.88 | 6.88 mg/l |
| 7 Mar 2025, 12:35 | 7.39 | 7.39 mg/l |
| 10 Feb 2025, 13:24 | 6.78 | 6.78 mg/l |
| 14 Jan 2025, 12:31 | 7.57 | 7.57 mg/l |
| 5 Dec 2024, 11:38 | 6.78 | 6.78 mg/l |
| 1 Nov 2024, 10:17 | 6.69 | 6.69 mg/l |
| 17 Oct 2024, 12:36 | 6.15 | 6.15 mg/l |
| 13 Sep 2024, 11:18 | 6.89 | 6.89 mg/l |
| 1 Aug 2024, 11:31 | 6.19 | 6.19 mg/l |
| 1 Jul 2024, 11:36 | 6.19 | 6.19 mg/l |
| 3 Jun 2024, 13:25 | 6.88 | 6.88 mg/l |
| 8 Mar 2024, 13:19 | 8.48 | 8.48 mg/l |
| 4 Jan 2024, 13:29 | 7.38 | 7.38 mg/l |
| 4 Dec 2023, 11:54 | 6.58 | 6.58 mg/l |
| 2 Nov 2023, 10:54 | 6.69 | 6.69 mg/l |
| 5 Oct 2023, 14:08 | 8.59 | 8.59 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.13 mg/l
Sampled 7 Sep 2026, 24 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 0.13 | 0.13 mg/l |
| 12 Aug 2026, 09:36 | 0.08 | 0.08 mg/l |
| 1 Jul 2026, 10:41 | 0.13 | 0.13 mg/l |
| 12 Jun 2026, 10:58 | 0.089 | 0.089 mg/l |
| 22 May 2026, 11:00 | 0.067 | 0.067 mg/l |
| 10 Apr 2026, 14:03 | <0.01 | below 0.01 mg/l (not detected above this) |
| 7 Mar 2025, 12:35 | 0.032 | 0.032 mg/l |
| 10 Feb 2025, 13:24 | 0.047 | 0.047 mg/l |
| 14 Jan 2025, 12:31 | 0.044 | 0.044 mg/l |
| 5 Dec 2024, 11:38 | 0.055 | 0.055 mg/l |
| 1 Nov 2024, 10:17 | 0.052 | 0.052 mg/l |
| 17 Oct 2024, 12:36 | 0.059 | 0.059 mg/l |
| 13 Sep 2024, 11:18 | 0.13 | 0.13 mg/l |
| 1 Aug 2024, 11:31 | 0.11 | 0.11 mg/l |
| 1 Jul 2024, 11:36 | 0.085 | 0.085 mg/l |
| 3 Jun 2024, 13:25 | 0.066 | 0.066 mg/l |
| 8 Mar 2024, 13:19 | 0.044 | 0.044 mg/l |
| 8 Feb 2024, 12:09 | 0.092 | 0.092 mg/l |
| 4 Jan 2024, 13:29 | 0.064 | 0.064 mg/l |
| 4 Dec 2023, 11:54 | 0.074 | 0.074 mg/l |
| 2 Nov 2023, 10:54 | 0.087 | 0.087 mg/l |
| 5 Oct 2023, 14:08 | 0.16 | 0.16 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
869 µS/cm
Sampled 7 Sep 2026, 24 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 7 Sep 2026, 12:26 | 869 | 869 µS/cm |
| 12 Aug 2026, 09:36 | 897 | 897 µS/cm |
| 1 Jul 2026, 10:41 | 844 | 844 µS/cm |
| 12 Jun 2026, 10:58 | 748 | 748 µS/cm |
| 22 May 2026, 11:00 | 781 | 781 µS/cm |
| 10 Apr 2026, 14:03 | 751 | 751 µS/cm |
| 7 Mar 2025, 12:35 | 755 | 755 µS/cm |
| 10 Feb 2025, 13:24 | 713 | 713 µS/cm |
| 14 Jan 2025, 12:31 | 717 | 717 µS/cm |
| 5 Dec 2024, 11:38 | 702 | 702 µS/cm |
| 1 Nov 2024, 10:17 | 761 | 761 µS/cm |
| 17 Oct 2024, 12:36 | 678 | 678 µS/cm |
| 13 Sep 2024, 11:18 | 824 | 824 µS/cm |
| 1 Aug 2024, 11:31 | 835 | 835 µS/cm |
| 1 Jul 2024, 11:36 | 831 | 831 µS/cm |
| 3 Jun 2024, 13:25 | 779 | 779 µS/cm |
| 8 Mar 2024, 13:19 | 753 | 753 µS/cm |
| 8 Feb 2024, 12:09 | 580 | 580 µS/cm |
| 4 Jan 2024, 13:29 | 633 | 633 µS/cm |
| 4 Dec 2023, 11:54 | 716 | 716 µS/cm |
| 2 Nov 2023, 10:54 | 602 | 602 µS/cm |
| 5 Oct 2023, 14:08 | 876 | 876 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 | 22 | Oct 2023 – Sep 2026 | 85.8% 7 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Oct 2023 – Sep 2026 | 8.2 mg/l 7 Sep 2026 |
| Temperature of Water 0076 | River water | 22 | Oct 2023 – Sep 2026 | 17.4 °C 7 Sep 2026 |
| pH 0061 | River water | 22 | Oct 2023 – Sep 2026 | 8.09 7 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Oct 2023 – Sep 2026 | below 0.03 mg/l 7 Sep 2026 |
| Nitrate as N 0117 | River water | 21 | Oct 2023 – Sep 2026 | 6.98 mg/l 7 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Oct 2023 – Sep 2026 | 0.13 mg/l 7 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Oct 2023 – Sep 2026 | 869 µS/cm 7 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 22 | Oct 2023 – Sep 2026 | 220 mg/l 7 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Oct 2023 – Sep 2026 | below 0.00094 mg/l 7 Sep 2026 |
| Nitrite as N 0118 | River water | 22 | Oct 2023 – Sep 2026 | 0.016 mg/l 7 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Oct 2023 – Sep 2026 | 7 mg/l 7 Sep 2026 |
| Phosphorus, Total as P 0348 | River water | 10 | Jun 2024 – Mar 2025 | 0.047 mg/l 7 Mar 2025 |
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.