River Ouzel Town Bridge Leighton
EA name: R.OUZEL TOWN BRIDGE LEIGHTON
Environment Agency sampling point AN-08M01 · 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
- 17 Sep 2026, 11:3514 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 28 since 20 Jun 2024 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 491700, 225000As 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 13 km along the riverBletchley On the River Ouzel · 13 km along the river
- Nearest gauge upstream
- Leighton Buzzard On the River Ouzel · 1.0 km along the riverClipstone Brook On the Clipstone Brook · 3.5 km along the riverCLIPSTONE BROOK GS LEIGHTON BUZZARD WITS DO NOT POLL MANUALLY 3.5 km along the river
- Why it was sampled
- Monitoring (national agency policy) (28 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
78.2%
Sampled 17 Sep 2026, 14 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:35 | 78.2 | 78.2% |
| 1 Jul 2026, 11:46 | 69.5 | 69.5% |
| 16 Jun 2026, 11:54 | 83 | 83% |
| 8 May 2026, 14:47 | 102.3 | 102.3% |
| 17 Apr 2026, 14:17 | 111.6 | 111.6% |
| 9 Mar 2026, 13:33 | 112.9 | 112.9% |
| 5 Feb 2026, 12:15 | 95.1 | 95.1% |
| 13 Jan 2026, 11:27 | 94 | 94% |
| 1 Dec 2025, 14:12 | 90.7 | 90.7% |
| 4 Nov 2025, 11:17 | 75.3 | 75.3% |
| 3 Oct 2025, 14:21 | 78 | 78% |
| 1 Sep 2025, 12:57 | 80.7 | 80.7% |
| 7 Aug 2025, 13:22 | 89.7 | 89.7% |
| 8 Jul 2025, 11:54 | 86.3 | 86.3% |
| 6 Jun 2025, 13:36 | 96.4 | 96.4% |
| 9 May 2025, 14:31 | 114.7 | 114.7% |
| 4 Apr 2025, 11:35 | 110.5 | 110.5% |
| 11 Mar 2025, 11:40 | 104.2 | 104.2% |
| 4 Feb 2025, 13:05 | 98.2 | 98.2% |
| 3 Jan 2025, 12:37 | 94.6 | 94.6% |
| 4 Dec 2024, 14:40 | 94.4 | 94.4% |
| 11 Nov 2024, 13:35 | 92.6 | 92.6% |
| 14 Oct 2024, 14:22 | 89.5 | 89.5% |
| 6 Sep 2024, 12:28 | 84.7 | 84.7% |
| 21 Aug 2024, 12:24 | 86.7 | 86.7% |
| 1 Jul 2024, 14:51 | 92.2 | 92.2% |
| 20 Jun 2024, 12:30 | 95.9 | 95.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.76 mg/l
Sampled 17 Sep 2026, 14 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:35 | 7.76 | 7.76 mg/l |
| 1 Jul 2026, 11:46 | 6.46 | 6.46 mg/l |
| 16 Jun 2026, 11:54 | 9.07 | 9.07 mg/l |
| 8 May 2026, 14:47 | 10.6 | 10.6 mg/l |
| 17 Apr 2026, 14:17 | 11.6 | 11.6 mg/l |
| 9 Mar 2026, 13:33 | 12.8 | 12.8 mg/l |
| 5 Feb 2026, 12:15 | 11.5 | 11.5 mg/l |
| 13 Jan 2026, 11:27 | 11.3 | 11.3 mg/l |
| 1 Dec 2025, 14:12 | 10.6 | 10.6 mg/l |
| 4 Nov 2025, 11:17 | 7.99 | 7.99 mg/l |
| 3 Oct 2025, 14:21 | 7.97 | 7.97 mg/l |
| 1 Sep 2025, 12:57 | 7.86 | 7.86 mg/l |
| 7 Aug 2025, 13:22 | 8.49 | 8.49 mg/l |
| 8 Jul 2025, 11:54 | 8.37 | 8.37 mg/l |
| 6 Jun 2025, 13:36 | 9.74 | 9.74 mg/l |
| 9 May 2025, 14:31 | 11.8 | 11.8 mg/l |
| 4 Apr 2025, 11:35 | 11.9 | 11.9 mg/l |
| 11 Mar 2025, 11:40 | 12.3 | 12.3 mg/l |
| 4 Feb 2025, 13:05 | 11.9 | 11.9 mg/l |
| 3 Jan 2025, 12:37 | 12.2 | 12.2 mg/l |
| 4 Dec 2024, 14:40 | 11.2 | 11.2 mg/l |
| 11 Nov 2024, 13:35 | 10.2 | 10.2 mg/l |
| 14 Oct 2024, 14:22 | 9.94 | 9.94 mg/l |
| 6 Sep 2024, 12:28 | 8.08 | 8.08 mg/l |
| 21 Aug 2024, 12:24 | 8.52 | 8.52 mg/l |
| 1 Jul 2024, 14:51 | 8.92 | 8.92 mg/l |
| 20 Jun 2024, 12:30 | 9.44 | 9.44 mg/l |
Water temperature
code 0076 · °C
15.6 °C
Sampled 17 Sep 2026, 14 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:35 | 15.6 | 15.6 °C |
| 3 Aug 2026, 12:40 | 19.7 | 19.7 °C |
| 1 Jul 2026, 11:46 | 18.8 | 18.8 °C |
| 16 Jun 2026, 11:54 | 11.3 | 11.3 °C |
| 8 May 2026, 14:47 | 13.7 | 13.7 °C |
| 17 Apr 2026, 14:17 | 13.4 | 13.4 °C |
| 9 Mar 2026, 13:33 | 9.8 | 9.8 °C |
| 5 Feb 2026, 12:15 | 7 | 7 °C |
| 13 Jan 2026, 11:27 | 7.2 | 7.2 °C |
| 1 Dec 2025, 14:12 | 8.5 | 8.5 °C |
| 4 Nov 2025, 11:17 | 12.6 | 12.6 °C |
| 3 Oct 2025, 14:21 | 14.3 | 14.3 °C |
| 1 Sep 2025, 12:57 | 16.5 | 16.5 °C |
| 7 Aug 2025, 13:22 | 17.9 | 17.9 °C |
| 8 Jul 2025, 11:54 | 16.7 | 16.7 °C |
| 6 Jun 2025, 13:36 | 14.8 | 14.8 °C |
| 9 May 2025, 14:31 | 13.8 | 13.8 °C |
| 4 Apr 2025, 11:35 | 11.8 | 11.8 °C |
| 11 Mar 2025, 11:40 | 8 | 8 °C |
| 4 Feb 2025, 13:05 | 7.1 | 7.1 °C |
| 3 Jan 2025, 12:37 | 4.5 | 4.5 °C |
| 4 Dec 2024, 14:40 | 7.9 | 7.9 °C |
| 11 Nov 2024, 13:35 | 10.9 | 10.9 °C |
| 14 Oct 2024, 14:22 | 10.6 | 10.6 °C |
| 6 Sep 2024, 12:28 | 17.5 | 17.5 °C |
| 21 Aug 2024, 12:24 | 16.1 | 16.1 °C |
| 1 Jul 2024, 14:51 | 16.8 | 16.8 °C |
| 20 Jun 2024, 12:30 | 16 | 16 °C |
pH
code 0061
7.82
Sampled 17 Sep 2026, 14 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:35 | 7.82 | 7.82 |
| 3 Aug 2026, 12:40 | 7.87 | 7.87 |
| 1 Jul 2026, 11:46 | 7.8 | 7.8 |
| 16 Jun 2026, 11:54 | 7.94 | 7.94 |
| 8 May 2026, 14:47 | 8.23 | 8.23 |
| 17 Apr 2026, 14:17 | 8.34 | 8.34 |
| 9 Mar 2026, 13:33 | 8.34 | 8.34 |
| 5 Feb 2026, 12:15 | 8 | 8 |
| 13 Jan 2026, 11:27 | 8.15 | 8.15 |
| 1 Dec 2025, 14:12 | 8.19 | 8.19 |
| 4 Nov 2025, 11:17 | 7.94 | 7.94 |
| 3 Oct 2025, 14:21 | 7.91 | 7.91 |
| 1 Sep 2025, 12:57 | 8.01 | 8.01 |
| 7 Aug 2025, 13:22 | 8.1 | 8.1 |
| 8 Jul 2025, 11:54 | 7.97 | 7.97 |
| 6 Jun 2025, 13:36 | 8.13 | 8.13 |
| 9 May 2025, 14:31 | 8.25 | 8.25 |
| 4 Apr 2025, 11:35 | 8.29 | 8.29 |
| 11 Mar 2025, 11:40 | 8.31 | 8.31 |
| 4 Feb 2025, 13:05 | 8.28 | 8.28 |
| 3 Jan 2025, 12:37 | 8.35 | 8.35 |
| 4 Dec 2024, 14:40 | 8.23 | 8.23 |
| 11 Nov 2024, 13:35 | 7.93 | 7.93 |
| 14 Oct 2024, 14:22 | 8.11 | 8.11 |
| 6 Sep 2024, 12:28 | 8.07 | 8.07 |
| 21 Aug 2024, 12:24 | 7.98 | 7.98 |
| 1 Jul 2024, 14:51 | 8 | 8 |
| 20 Jun 2024, 12:30 | 8.03 | 8.03 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.098 mg/l
Sampled 17 Sep 2026, 14 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:35 | 0.098 | 0.098 mg/l |
| 3 Aug 2026, 12:40 | 0.042 | 0.042 mg/l |
| 1 Jul 2026, 11:46 | 0.041 | 0.041 mg/l |
| 16 Jun 2026, 11:54 | 0.036 | 0.036 mg/l |
| 8 May 2026, 14:47 | 0.035 | 0.035 mg/l |
| 17 Apr 2026, 14:17 | 0.031 | 0.031 mg/l |
| 9 Mar 2026, 13:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Feb 2026, 12:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 Jan 2026, 11:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Dec 2025, 14:12 | 0.13 | 0.13 mg/l |
| 4 Nov 2025, 11:17 | 0.079 | 0.079 mg/l |
| 3 Oct 2025, 14:21 | 0.057 | 0.057 mg/l |
| 1 Sep 2025, 12:57 | 0.041 | 0.041 mg/l |
| 7 Aug 2025, 13:22 | 0.043 | 0.043 mg/l |
| 8 Jul 2025, 11:54 | 0.077 | 0.077 mg/l |
| 6 Jun 2025, 13:36 | 0.06 | 0.06 mg/l |
| 9 May 2025, 14:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Apr 2025, 11:35 | 0.035 | 0.035 mg/l |
| 11 Mar 2025, 11:40 | 0.037 | 0.037 mg/l |
| 4 Feb 2025, 13:05 | 0.044 | 0.044 mg/l |
| 3 Jan 2025, 12:37 | 0.063 | 0.063 mg/l |
| 4 Dec 2024, 14:40 | 0.053 | 0.053 mg/l |
| 11 Nov 2024, 13:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Oct 2024, 14:22 | 0.041 | 0.041 mg/l |
| 6 Sep 2024, 12:28 | 0.054 | 0.054 mg/l |
| 21 Aug 2024, 12:24 | 0.058 | 0.058 mg/l |
| 1 Jul 2024, 14:51 | 0.056 | 0.056 mg/l |
| 20 Jun 2024, 12:30 | 0.044 | 0.044 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
7.78 mg/l
Sampled 17 Sep 2026, 14 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:35 | 7.78 | 7.78 mg/l |
| 3 Aug 2026, 12:40 | 9.58 | 9.58 mg/l |
| 1 Jul 2026, 11:46 | 6.27 | 6.27 mg/l |
| 16 Jun 2026, 11:54 | 6.07 | 6.07 mg/l |
| 8 May 2026, 14:47 | 7.25 | 7.25 mg/l |
| 17 Apr 2026, 14:17 | 8.06 | 8.06 mg/l |
| 9 Mar 2026, 13:33 | 8.77 | 8.77 mg/l |
| 5 Feb 2026, 12:15 | 11 | 11 mg/l |
| 13 Jan 2026, 11:27 | 11 | 11 mg/l |
| 1 Dec 2025, 14:12 | 11.9 | 11.9 mg/l |
| 4 Nov 2025, 11:17 | 8.96 | 8.96 mg/l |
| 3 Oct 2025, 14:21 | 7.17 | 7.17 mg/l |
| 1 Sep 2025, 12:57 | 7.16 | 7.16 mg/l |
| 7 Aug 2025, 13:22 | 5.28 | 5.28 mg/l |
| 8 Jul 2025, 11:54 | 6.46 | 6.46 mg/l |
| 6 Jun 2025, 13:36 | 9.55 | 9.55 mg/l |
| 9 May 2025, 14:31 | 9.96 | 9.96 mg/l |
| 4 Apr 2025, 11:35 | 8.26 | 8.26 mg/l |
| 11 Mar 2025, 11:40 | 8.96 | 8.96 mg/l |
| 4 Feb 2025, 13:05 | 9.67 | 9.67 mg/l |
| 3 Jan 2025, 12:37 | 8.37 | 8.37 mg/l |
| 4 Dec 2024, 14:40 | 8.65 | 8.65 mg/l |
| 11 Nov 2024, 13:35 | 8.36 | 8.36 mg/l |
| 14 Oct 2024, 14:22 | 7.04 | 7.04 mg/l |
| 6 Sep 2024, 12:28 | 11 | 11 mg/l |
| 21 Aug 2024, 12:24 | 9.67 | 9.67 mg/l |
| 1 Jul 2024, 14:51 | 7.46 | 7.46 mg/l |
| 20 Jun 2024, 12:30 | 8.66 | 8.66 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.25 mg/l
Sampled 17 Sep 2026, 14 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:35 | 0.25 | 0.25 mg/l |
| 3 Aug 2026, 12:40 | 0.26 | 0.26 mg/l |
| 1 Jul 2026, 11:46 | 0.23 | 0.23 mg/l |
| 16 Jun 2026, 11:54 | 0.18 | 0.18 mg/l |
| 8 May 2026, 14:47 | 0.14 | 0.14 mg/l |
| 17 Apr 2026, 14:17 | 0.091 | 0.091 mg/l |
| 9 Mar 2026, 13:33 | 0.084 | 0.084 mg/l |
| 5 Feb 2026, 12:15 | 0.084 | 0.084 mg/l |
| 13 Jan 2026, 11:27 | 0.095 | 0.095 mg/l |
| 1 Dec 2025, 14:12 | 0.2 | 0.2 mg/l |
| 4 Nov 2025, 11:17 | 0.22 | 0.22 mg/l |
| 3 Oct 2025, 14:21 | 0.18 | 0.18 mg/l |
| 1 Sep 2025, 12:57 | 0.37 | 0.37 mg/l |
| 7 Aug 2025, 13:22 | 0.12 | 0.12 mg/l |
| 8 Jul 2025, 11:54 | 0.19 | 0.19 mg/l |
| 6 Jun 2025, 13:36 | 0.2 | 0.2 mg/l |
| 9 May 2025, 14:31 | 0.11 | 0.11 mg/l |
| 4 Apr 2025, 11:35 | 0.053 | 0.053 mg/l |
| 11 Mar 2025, 11:40 | 0.058 | 0.058 mg/l |
| 4 Feb 2025, 13:05 | 0.1 | 0.1 mg/l |
| 3 Jan 2025, 12:37 | 0.11 | 0.11 mg/l |
| 4 Dec 2024, 14:40 | 0.09 | 0.09 mg/l |
| 11 Nov 2024, 13:35 | 0.093 | 0.093 mg/l |
| 14 Oct 2024, 14:22 | 0.17 | 0.17 mg/l |
| 6 Sep 2024, 12:28 | 0.29 | 0.29 mg/l |
| 21 Aug 2024, 12:24 | 0.27 | 0.27 mg/l |
| 1 Jul 2024, 14:51 | 0.23 | 0.23 mg/l |
| 20 Jun 2024, 12:30 | 0.22 | 0.22 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
839 µS/cm
Sampled 17 Sep 2026, 14 days ago · 28 results banked
Every result (28)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:35 | 839 | 839 µS/cm |
| 3 Aug 2026, 12:40 | 954 | 954 µS/cm |
| 1 Jul 2026, 11:46 | 827 | 827 µS/cm |
| 16 Jun 2026, 11:54 | 784 | 784 µS/cm |
| 8 May 2026, 14:47 | 847 | 847 µS/cm |
| 17 Apr 2026, 14:17 | 823 | 823 µS/cm |
| 9 Mar 2026, 13:33 | 800 | 800 µS/cm |
| 5 Feb 2026, 12:15 | 731 | 731 µS/cm |
| 13 Jan 2026, 11:27 | 809 | 809 µS/cm |
| 1 Dec 2025, 14:12 | 859 | 859 µS/cm |
| 4 Nov 2025, 11:17 | 943 | 943 µS/cm |
| 3 Oct 2025, 14:21 | 836 | 836 µS/cm |
| 1 Sep 2025, 12:57 | 839 | 839 µS/cm |
| 7 Aug 2025, 13:22 | 715 | 715 µS/cm |
| 8 Jul 2025, 11:54 | 765 | 765 µS/cm |
| 6 Jun 2025, 13:36 | 847 | 847 µS/cm |
| 9 May 2025, 14:31 | 850 | 850 µS/cm |
| 4 Apr 2025, 11:35 | 832 | 832 µS/cm |
| 11 Mar 2025, 11:40 | 805 | 805 µS/cm |
| 4 Feb 2025, 13:05 | 800 | 800 µS/cm |
| 3 Jan 2025, 12:37 | 759 | 759 µS/cm |
| 4 Dec 2024, 14:40 | 785 | 785 µS/cm |
| 11 Nov 2024, 13:35 | 809 | 809 µS/cm |
| 14 Oct 2024, 14:22 | 698 | 698 µS/cm |
| 6 Sep 2024, 12:28 | 895 | 895 µS/cm |
| 21 Aug 2024, 12:24 | 857 | 857 µS/cm |
| 1 Jul 2024, 14:51 | 800 | 800 µS/cm |
| 20 Jun 2024, 12:30 | 825 | 825 µS/cm |
Everything measured here
12 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 12 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 27 | Jun 2024 – Sep 2026 | 78.2% 17 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Jun 2024 – Sep 2026 | 7.76 mg/l 17 Sep 2026 |
| Temperature of Water 0076 | River water | 28 | Jun 2024 – Sep 2026 | 15.6 °C 17 Sep 2026 |
| pH 0061 | River water | 28 | Jun 2024 – Sep 2026 | 7.82 17 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 28 | Jun 2024 – Sep 2026 | 0.098 mg/l 17 Sep 2026 |
| Nitrate as N 0117 | River water | 28 | Jun 2024 – Sep 2026 | 7.78 mg/l 17 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 28 | Jun 2024 – Sep 2026 | 0.25 mg/l 17 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 28 | Jun 2024 – Sep 2026 | 839 µS/cm 17 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 28 | Jun 2024 – Sep 2026 | 190 mg/l 17 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 28 | Jun 2024 – Sep 2026 | 0.00179 mg/l 17 Sep 2026 |
| Nitrite as N 0118 | River water | 28 | Jun 2024 – Sep 2026 | 0.019 mg/l 17 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 28 | Jun 2024 – Sep 2026 | 7.8 mg/l 17 Sep 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.