River Ouzel Orchard Mill
EA name: R.OUZEL ORCHARD MILL
Environment Agency sampling point AN-08M04 · 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
- 1 May 2026, 10:325 months ago · time as the Environment Agency records it (UK clock time; the source gives no time zone). Not sampled since, as far as the archive shows: the Environment Agency was asked up to 30 Sep 2026 and had nothing newer.
- Samples banked
- 30 since 16 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 488500, 230900As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Ouzel
- River, by the map
- River OuzelPlaced on the river its name gives, 69 m from the line.
- Next gauge downstream
- WATERHALL BLETCHLEY FGS 1.7 km along the riverBletchley On the River Ouzel · 1.8 km along the river
- Nearest gauge upstream
- Leighton Buzzard On the River Ouzel · 12 km along the riverClipstone Brook On the Clipstone Brook · 15 km along the riverCLIPSTONE BROOK GS LEIGHTON BUZZARD WITS DO NOT POLL MANUALLY 15 km along the river
- Why it was sampled
- Monitoring (national agency policy) (21 samples)
Planned investigation (local monitoring) (9 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
87.6%
Sampled 1 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 May 2026, 10:32 | 87.6 | 87.6% |
| 10 Apr 2026, 12:47 | 96 | 96% |
| 9 Mar 2026, 13:16 | 98.4 | 98.4% |
| 5 Feb 2026, 11:56 | 97.2 | 97.2% |
| 13 Jan 2026, 11:00 | 96.7 | 96.7% |
| 4 Dec 2025, 12:24 | 90.9 | 90.9% |
| 3 Nov 2025, 14:41 | 88.1 | 88.1% |
| 8 Oct 2025, 12:34 | 84.3 | 84.3% |
| 12 Sep 2025, 11:12 | 85.5 | 85.5% |
| 1 Aug 2025, 14:22 | 88.8 | 88.8% |
| 15 Jul 2025, 08:22 | 76.7 | 76.7% |
| 11 Jun 2025, 10:22 | 84.4 | 84.4% |
| 15 May 2025, 11:48 | 83.8 | 83.8% |
| 7 Apr 2025, 14:36 | 112.6 | 112.6% |
| 20 Mar 2025, 10:22 | 99.7 | 99.7% |
| 4 Feb 2025, 14:28 | 99 | 99% |
| 20 Jan 2025, 15:50 | 97 | 97% |
| 5 Dec 2024, 13:19 | 95.2 | 95.2% |
| 21 Nov 2024, 10:55 | 95 | 95% |
| 28 Oct 2024, 12:29 | 93.6 | 93.6% |
| 16 Sep 2024, 14:06 | 91.7 | 91.7% |
| 26 Jul 2024, 14:24 | 92.8 | 92.8% |
| 20 Jun 2024, 11:24 | 89.2 | 89.2% |
| 13 May 2024, 13:25 | 98.9 | 98.9% |
| 15 Apr 2024, 12:27 | 92.6 | 92.6% |
| 19 Feb 2024, 12:56 | 92.3 | 92.3% |
| 15 Jan 2024, 15:08 | 96.9 | 96.9% |
| 5 Dec 2023, 13:22 | 92.1 | 92.1% |
| 20 Nov 2023, 11:01 | 91.5 | 91.5% |
| 16 Oct 2023, 11:49 | 90.6 | 90.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.13 mg/l
Sampled 1 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 May 2026, 10:32 | 9.13 | 9.13 mg/l |
| 10 Apr 2026, 12:47 | 10.4 | 10.4 mg/l |
| 9 Mar 2026, 13:16 | 11.2 | 11.2 mg/l |
| 5 Feb 2026, 11:56 | 11.8 | 11.8 mg/l |
| 13 Jan 2026, 11:00 | 11.7 | 11.7 mg/l |
| 4 Dec 2025, 12:24 | 10.9 | 10.9 mg/l |
| 3 Nov 2025, 14:41 | 9.58 | 9.58 mg/l |
| 8 Oct 2025, 12:34 | 8.72 | 8.72 mg/l |
| 12 Sep 2025, 11:12 | 8.71 | 8.71 mg/l |
| 1 Aug 2025, 14:22 | 8.44 | 8.44 mg/l |
| 15 Jul 2025, 08:22 | 7.1 | 7.1 mg/l |
| 11 Jun 2025, 10:22 | 8.27 | 8.27 mg/l |
| 15 May 2025, 11:48 | 8.5 | 8.5 mg/l |
| 7 Apr 2025, 14:36 | 12.2 | 12.2 mg/l |
| 20 Mar 2025, 10:22 | 11.6 | 11.6 mg/l |
| 4 Feb 2025, 14:28 | 12.2 | 12.2 mg/l |
| 20 Jan 2025, 15:50 | 12.1 | 12.1 mg/l |
| 5 Dec 2024, 13:19 | 10.9 | 10.9 mg/l |
| 21 Nov 2024, 10:55 | 12 | 12 mg/l |
| 28 Oct 2024, 12:29 | 10 | 10 mg/l |
| 16 Sep 2024, 14:06 | 9.41 | 9.41 mg/l |
| 26 Jul 2024, 14:24 | 8.69 | 8.69 mg/l |
| 20 Jun 2024, 11:24 | 8.78 | 8.78 mg/l |
| 13 May 2024, 13:25 | 9.45 | 9.45 mg/l |
| 15 Apr 2024, 12:27 | 10.1 | 10.1 mg/l |
| 19 Feb 2024, 12:56 | 10.5 | 10.5 mg/l |
| 15 Jan 2024, 15:08 | 12.5 | 12.5 mg/l |
| 5 Dec 2023, 13:22 | 11.2 | 11.2 mg/l |
| 20 Nov 2023, 11:01 | 10.3 | 10.3 mg/l |
| 16 Oct 2023, 11:49 | 10.1 | 10.1 mg/l |
Water temperature
code 0076 · °C
13.4 °C
Sampled 1 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 May 2026, 10:32 | 13.4 | 13.4 °C |
| 10 Apr 2026, 12:47 | 11.6 | 11.6 °C |
| 9 Mar 2026, 13:16 | 9.6 | 9.6 °C |
| 5 Feb 2026, 11:56 | 6.8 | 6.8 °C |
| 13 Jan 2026, 11:00 | 7.2 | 7.2 °C |
| 4 Dec 2025, 12:24 | 7.5 | 7.5 °C |
| 3 Nov 2025, 14:41 | 11.5 | 11.5 °C |
| 8 Oct 2025, 12:34 | 13.7 | 13.7 °C |
| 12 Sep 2025, 11:12 | 14.4 | 14.4 °C |
| 1 Aug 2025, 14:22 | 17.7 | 17.7 °C |
| 15 Jul 2025, 08:22 | 19 | 19 °C |
| 11 Jun 2025, 10:22 | 16.2 | 16.2 °C |
| 15 May 2025, 11:48 | 14.6 | 14.6 °C |
| 7 Apr 2025, 14:36 | 11.5 | 11.5 °C |
| 20 Mar 2025, 10:22 | 8.8 | 8.8 °C |
| 4 Feb 2025, 14:28 | 6.5 | 6.5 °C |
| 20 Jan 2025, 15:50 | 5.8 | 5.8 °C |
| 5 Dec 2024, 13:19 | 9.4 | 9.4 °C |
| 21 Nov 2024, 10:55 | 5.4 | 5.4 °C |
| 28 Oct 2024, 12:29 | 12.2 | 12.2 °C |
| 16 Sep 2024, 14:06 | 14.1 | 14.1 °C |
| 26 Jul 2024, 14:24 | 18.4 | 18.4 °C |
| 20 Jun 2024, 11:24 | 16 | 16 °C |
| 13 May 2024, 13:25 | 17.4 | 17.4 °C |
| 15 Apr 2024, 12:27 | 11.4 | 11.4 °C |
| 19 Feb 2024, 12:56 | 9.4 | 9.4 °C |
| 15 Jan 2024, 15:08 | 4.6 | 4.6 °C |
| 5 Dec 2023, 13:22 | 6.9 | 6.9 °C |
| 20 Nov 2023, 11:01 | 9.9 | 9.9 °C |
| 16 Oct 2023, 11:49 | 10.3 | 10.3 °C |
pH
code 0061
7.96
Sampled 1 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 May 2026, 10:32 | 7.96 | 7.96 |
| 10 Apr 2026, 12:47 | 8.03 | 8.03 |
| 9 Mar 2026, 13:16 | 8.09 | 8.09 |
| 5 Feb 2026, 11:56 | 8.35 | 8.35 |
| 13 Jan 2026, 11:00 | 8.22 | 8.22 |
| 4 Dec 2025, 12:24 | 8.07 | 8.07 |
| 3 Nov 2025, 14:41 | 8.01 | 8.01 |
| 8 Oct 2025, 12:34 | 8.03 | 8.03 |
| 12 Sep 2025, 11:12 | 8.15 | 8.15 |
| 1 Aug 2025, 14:22 | 8.05 | 8.05 |
| 15 Jul 2025, 08:22 | 7.92 | 7.92 |
| 11 Jun 2025, 10:22 | 7.95 | 7.95 |
| 15 May 2025, 11:48 | 7.95 | 7.95 |
| 7 Apr 2025, 14:36 | 8.28 | 8.28 |
| 20 Mar 2025, 10:22 | 8.17 | 8.17 |
| 4 Feb 2025, 14:28 | 8.19 | 8.19 |
| 20 Jan 2025, 15:50 | 8.21 | 8.21 |
| 5 Dec 2024, 13:19 | 8.03 | 8.03 |
| 21 Nov 2024, 10:55 | 8.08 | 8.08 |
| 28 Oct 2024, 12:29 | 7.81 | 7.81 |
| 16 Sep 2024, 14:06 | 7.99 | 7.99 |
| 26 Jul 2024, 14:24 | 7.96 | 7.96 |
| 20 Jun 2024, 11:24 | 7.92 | 7.92 |
| 13 May 2024, 13:25 | 8.11 | 8.11 |
| 15 Apr 2024, 12:27 | 8.25 | 8.25 |
| 19 Feb 2024, 12:56 | 7.94 | 7.94 |
| 15 Jan 2024, 15:08 | 8.21 | 8.21 |
| 5 Dec 2023, 13:22 | 8.06 | 8.06 |
| 20 Nov 2023, 11:01 | 8.06 | 8.06 |
| 16 Oct 2023, 11:49 | 7.9 | 7.9 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 1 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 May 2026, 10:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Apr 2026, 12:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Mar 2026, 13:16 | 0.1 | 0.1 mg/l |
| 5 Feb 2026, 11:56 | 0.06 | 0.06 mg/l |
| 13 Jan 2026, 11:00 | 0.12 | 0.12 mg/l |
| 4 Dec 2025, 12:24 | 0.12 | 0.12 mg/l |
| 3 Nov 2025, 14:41 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Oct 2025, 12:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Sep 2025, 11:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Aug 2025, 14:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2025, 08:22 | 0.071 | 0.071 mg/l |
| 11 Jun 2025, 10:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 May 2025, 11:48 | 0.064 | 0.064 mg/l |
| 7 Apr 2025, 14:36 | 0.15 | 0.15 mg/l |
| 20 Mar 2025, 10:22 | 0.12 | 0.12 mg/l |
| 4 Feb 2025, 14:28 | 0.078 | 0.078 mg/l |
| 20 Jan 2025, 15:50 | 0.082 | 0.082 mg/l |
| 5 Dec 2024, 13:19 | 0.056 | 0.056 mg/l |
| 21 Nov 2024, 10:55 | 0.12 | 0.12 mg/l |
| 28 Oct 2024, 12:29 | 0.05 | 0.05 mg/l |
| 16 Sep 2024, 14:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Jul 2024, 14:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jun 2024, 11:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2024, 13:25 | 0.045 | 0.045 mg/l |
| 15 Apr 2024, 12:27 | 0.046 | 0.046 mg/l |
| 19 Feb 2024, 12:56 | 0.056 | 0.056 mg/l |
| 15 Jan 2024, 15:08 | 0.14 | 0.14 mg/l |
| 5 Dec 2023, 13:22 | 0.11 | 0.11 mg/l |
| 20 Nov 2023, 11:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Oct 2023, 11:49 | 0.14 | 0.14 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
8.33 mg/l
Sampled 1 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 May 2026, 10:32 | 8.33 | 8.33 mg/l |
| 10 Apr 2026, 12:47 | 8.21 | 8.21 mg/l |
| 9 Mar 2026, 13:16 | 8.91 | 8.91 mg/l |
| 5 Feb 2026, 11:56 | 10.9 | 10.9 mg/l |
| 13 Jan 2026, 11:00 | 11.9 | 11.9 mg/l |
| 4 Dec 2025, 12:24 | 11.8 | 11.8 mg/l |
| 3 Nov 2025, 14:41 | 8.25 | 8.25 mg/l |
| 8 Oct 2025, 12:34 | 7.68 | 7.68 mg/l |
| 12 Sep 2025, 11:12 | 8.07 | 8.07 mg/l |
| 1 Aug 2025, 14:22 | 8.49 | 8.49 mg/l |
| 15 Jul 2025, 08:22 | 9.89 | 9.89 mg/l |
| 11 Jun 2025, 10:22 | 8.35 | 8.35 mg/l |
| 15 May 2025, 11:48 | 9.93 | 9.93 mg/l |
| 7 Apr 2025, 14:36 | 9.87 | 9.87 mg/l |
| 20 Mar 2025, 10:22 | 9.73 | 9.73 mg/l |
| 4 Feb 2025, 14:28 | 8.76 | 8.76 mg/l |
| 20 Jan 2025, 15:50 | 8.54 | 8.54 mg/l |
| 5 Dec 2024, 13:19 | 7.12 | 7.12 mg/l |
| 21 Nov 2024, 10:55 | 8.14 | 8.14 mg/l |
| 28 Oct 2024, 12:29 | 7.72 | 7.72 mg/l |
| 16 Sep 2024, 14:06 | 9.06 | 9.06 mg/l |
| 26 Jul 2024, 14:24 | 8.27 | 8.27 mg/l |
| 20 Jun 2024, 11:24 | 8.53 | 8.53 mg/l |
| 13 May 2024, 13:25 | 8.79 | 8.79 mg/l |
| 15 Apr 2024, 12:27 | 8.24 | 8.24 mg/l |
| 19 Feb 2024, 12:56 | 6.26 | 6.26 mg/l |
| 15 Jan 2024, 15:08 | 8.9 | 8.9 mg/l |
| 5 Dec 2023, 13:22 | 8.13 | 8.13 mg/l |
| 20 Nov 2023, 11:01 | 8.36 | 8.36 mg/l |
| 16 Oct 2023, 11:49 | 10.9 | 10.9 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.15 mg/l
Sampled 1 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 May 2026, 10:32 | 0.15 | 0.15 mg/l |
| 10 Apr 2026, 12:47 | 0.11 | 0.11 mg/l |
| 9 Mar 2026, 13:16 | 0.1 | 0.1 mg/l |
| 5 Feb 2026, 11:56 | 0.094 | 0.094 mg/l |
| 13 Jan 2026, 11:00 | 0.11 | 0.11 mg/l |
| 4 Dec 2025, 12:24 | 0.13 | 0.13 mg/l |
| 3 Nov 2025, 14:41 | 0.13 | 0.13 mg/l |
| 8 Oct 2025, 12:34 | 0.16 | 0.16 mg/l |
| 12 Sep 2025, 11:12 | 0.19 | 0.19 mg/l |
| 1 Aug 2025, 14:22 | 0.17 | 0.17 mg/l |
| 15 Jul 2025, 08:22 | 0.22 | 0.22 mg/l |
| 11 Jun 2025, 10:22 | 0.21 | 0.21 mg/l |
| 15 May 2025, 11:48 | 0.21 | 0.21 mg/l |
| 7 Apr 2025, 14:36 | 0.2 | 0.2 mg/l |
| 20 Mar 2025, 10:22 | 0.15 | 0.15 mg/l |
| 4 Feb 2025, 14:28 | 0.13 | 0.13 mg/l |
| 20 Jan 2025, 15:50 | 0.14 | 0.14 mg/l |
| 5 Dec 2024, 13:19 | 0.097 | 0.097 mg/l |
| 21 Nov 2024, 10:55 | 0.1 | 0.1 mg/l |
| 28 Oct 2024, 12:29 | 0.11 | 0.11 mg/l |
| 16 Sep 2024, 14:06 | 0.27 | 0.27 mg/l |
| 26 Jul 2024, 14:24 | 0.27 | 0.27 mg/l |
| 20 Jun 2024, 11:24 | 0.19 | 0.19 mg/l |
| 13 May 2024, 13:25 | 0.14 | 0.14 mg/l |
| 15 Apr 2024, 12:27 | 0.095 | 0.095 mg/l |
| 19 Feb 2024, 12:56 | 0.13 | 0.13 mg/l |
| 15 Jan 2024, 15:08 | 0.17 | 0.17 mg/l |
| 5 Dec 2023, 13:22 | 0.12 | 0.12 mg/l |
| 20 Nov 2023, 11:01 | 0.14 | 0.14 mg/l |
| 16 Oct 2023, 11:49 | 0.16 | 0.16 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
816 µS/cm
Sampled 1 May 2026, 5 months ago · 30 results banked
Every result (30)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 May 2026, 10:32 | 816 | 816 µS/cm |
| 10 Apr 2026, 12:47 | 799 | 799 µS/cm |
| 9 Mar 2026, 13:16 | 791 | 791 µS/cm |
| 5 Feb 2026, 11:56 | 714 | 714 µS/cm |
| 13 Jan 2026, 11:00 | 794 | 794 µS/cm |
| 4 Dec 2025, 12:24 | 830 | 830 µS/cm |
| 3 Nov 2025, 14:41 | 833 | 833 µS/cm |
| 8 Oct 2025, 12:34 | 850 | 850 µS/cm |
| 12 Sep 2025, 11:12 | 841 | 841 µS/cm |
| 1 Aug 2025, 14:22 | 815 | 815 µS/cm |
| 15 Jul 2025, 08:22 | 974 | 974 µS/cm |
| 11 Jun 2025, 10:22 | 817 | 817 µS/cm |
| 15 May 2025, 11:48 | 836 | 836 µS/cm |
| 7 Apr 2025, 14:36 | 808 | 808 µS/cm |
| 20 Mar 2025, 10:22 | 812 | 812 µS/cm |
| 4 Feb 2025, 14:28 | 765 | 765 µS/cm |
| 20 Jan 2025, 15:50 | 774 | 774 µS/cm |
| 5 Dec 2024, 13:19 | 720 | 720 µS/cm |
| 21 Nov 2024, 10:55 | 695 | 695 µS/cm |
| 28 Oct 2024, 12:29 | 790 | 790 µS/cm |
| 16 Sep 2024, 14:06 | 824 | 824 µS/cm |
| 26 Jul 2024, 14:24 | 794 | 794 µS/cm |
| 20 Jun 2024, 11:24 | 806 | 806 µS/cm |
| 13 May 2024, 13:25 | 787 | 787 µS/cm |
| 15 Apr 2024, 12:27 | 766 | 766 µS/cm |
| 19 Feb 2024, 12:56 | 586 | 586 µS/cm |
| 15 Jan 2024, 15:08 | 802 | 802 µS/cm |
| 5 Dec 2023, 13:22 | 656 | 656 µS/cm |
| 20 Nov 2023, 11:01 | 745 | 745 µS/cm |
| 16 Oct 2023, 11:49 | 741 | 741 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 | 30 | Oct 2023 – May 2026 | 87.6% 1 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 30 | Oct 2023 – May 2026 | 9.13 mg/l 1 May 2026 |
| Temperature of Water 0076 | River water | 30 | Oct 2023 – May 2026 | 13.4 °C 1 May 2026 |
| pH 0061 | River water | 30 | Oct 2023 – May 2026 | 7.96 1 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 30 | Oct 2023 – May 2026 | below 0.03 mg/l 1 May 2026 |
| Nitrate as N 0117 | River water | 30 | Oct 2023 – May 2026 | 8.33 mg/l 1 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 30 | Oct 2023 – May 2026 | 0.15 mg/l 1 May 2026 |
| Conductivity at 25 C 0077 | River water | 30 | Oct 2023 – May 2026 | 816 µS/cm 1 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 30 | Oct 2023 – May 2026 | 190 mg/l 1 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 30 | Oct 2023 – May 2026 | below 0.00064 mg/l 1 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 17 | Feb 2024 – May 2026 | 1.5 mg/l 1 May 2026 |
| Nitrite as N 0118 | River water | 30 | Oct 2023 – May 2026 | 0.068 mg/l 1 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 30 | Oct 2023 – May 2026 | 8.4 mg/l 1 May 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.