Tributary of Ouzel Brook Road Bridge SW of Eaton Bray

EA name: TRIB.OUZEL BK.RD.BR.SW OF EATON BRAY
Environment Agency sampling point AN-06M20 · 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, 10:2321 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
5 since 28 May 2026 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
Latest sample
River / running surface water Environmental monitoring statutory (EU directives) · results completed 19 Sep 2026
Where
National Grid 496484, 220357As 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 OuzelPlaced by position alone, on a line whose map name differs from its own, 5 m from the line.
Next gauge downstream
Leighton Buzzard On the River Ouzel · 8.1 km along the riverLEIGHTON BUZZARD GS 8.1 km along the river
Why it was sampled
Environmental monitoring statutory (EU directives) (5 samples)

Results here were completed a median of 3 days after the sample was taken (2 to 34 days, 5 samples).

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

88.6%

Sampled 17 Sep 2026, 21 days ago · 5 results banked

859095100%20242025202628 May 2026, 13:46: 99.4%11 Jun 2026, 13:37: 92.2%7 Jul 2026, 15:57: 96%3 Aug 2026, 11:19: 92.1%17 Sep 2026, 10:23: 88.6%
Every result (5)
SampledResult as publishedReads as
17 Sep 2026, 10:2388.6 88.6%
3 Aug 2026, 11:1992.1 92.1%
7 Jul 2026, 15:5796 96%
11 Jun 2026, 13:3792.2 92.2%
28 May 2026, 13:4699.4 99.4%

Dissolved oxygen

as O2 · code 9924 · mg/l

9.01 mg/l

Sampled 17 Sep 2026, 21 days ago · 5 results banked

8.599.510mg/l20242025202628 May 2026, 13:46: 9.14 mg/l11 Jun 2026, 13:37: 9.8 mg/l7 Jul 2026, 15:57: 8.55 mg/l3 Aug 2026, 11:19: 8.68 mg/l17 Sep 2026, 10:23: 9.01 mg/l
Every result (5)
SampledResult as publishedReads as
17 Sep 2026, 10:239.01 9.01 mg/l
3 Aug 2026, 11:198.68 8.68 mg/l
7 Jul 2026, 15:578.55 8.55 mg/l
11 Jun 2026, 13:379.8 9.8 mg/l
28 May 2026, 13:469.14 9.14 mg/l

Water temperature

code 0076 · °C

14.5 °C

Sampled 17 Sep 2026, 21 days ago · 5 results banked

12.51517.52022.5°C20242025202628 May 2026, 13:46: 19.3 °C11 Jun 2026, 13:37: 12.5 °C7 Jul 2026, 15:57: 20.9 °C3 Aug 2026, 11:19: 18.1 °C17 Sep 2026, 10:23: 14.5 °C
Every result (5)
SampledResult as publishedReads as
17 Sep 2026, 10:2314.5 14.5 °C
3 Aug 2026, 11:1918.1 18.1 °C
7 Jul 2026, 15:5720.9 20.9 °C
11 Jun 2026, 13:3712.5 12.5 °C
28 May 2026, 13:4619.3 19.3 °C

pH

code 0061

8.15

Sampled 17 Sep 2026, 21 days ago · 5 results banked

8.18.158.28.258.38.3520242025202628 May 2026, 13:46: 8.1411 Jun 2026, 13:37: 8.167 Jul 2026, 15:57: 8.223 Aug 2026, 11:19: 8.3217 Sep 2026, 10:23: 8.15
Every result (5)
SampledResult as publishedReads as
17 Sep 2026, 10:238.15 8.15
3 Aug 2026, 11:198.32 8.32
7 Jul 2026, 15:578.22 8.22
11 Jun 2026, 13:378.16 8.16
28 May 2026, 13:468.14 8.14

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

below 0.03 mg/l (not detected above this)

Sampled 17 Sep 2026, 21 days ago · 5 results banked

0.030.0320.0340.036mg/l20242025202628 May 2026, 13:46: below 0.03 mg/l (not detected above this)11 Jun 2026, 13:37: 0.036 mg/l7 Jul 2026, 15:57: below 0.03 mg/l (not detected above this)3 Aug 2026, 11:19: below 0.03 mg/l (not detected above this)17 Sep 2026, 10:23: below 0.03 mg/l (not detected above this)
Every result (5)
SampledResult as publishedReads as
17 Sep 2026, 10:23<0.03 below 0.03 mg/l (not detected above this)
3 Aug 2026, 11:19<0.03 below 0.03 mg/l (not detected above this)
7 Jul 2026, 15:57<0.03 below 0.03 mg/l (not detected above this)
11 Jun 2026, 13:370.036 0.036 mg/l
28 May 2026, 13:46<0.03 below 0.03 mg/l (not detected above this)

Nitrate

as nitrogen (N) · code 0117 · mg/l

11 mg/l

Sampled 17 Sep 2026, 21 days ago · 5 results banked

891011mg/l20242025202628 May 2026, 13:46: 11 mg/l11 Jun 2026, 13:37: 8.98 mg/l7 Jul 2026, 15:57: 11 mg/l3 Aug 2026, 11:19: 11 mg/l17 Sep 2026, 10:23: 11 mg/l
Every result (5)
SampledResult as publishedReads as
17 Sep 2026, 10:2311 11 mg/l
3 Aug 2026, 11:1911 11 mg/l
7 Jul 2026, 15:5711 11 mg/l
11 Jun 2026, 13:378.98 8.98 mg/l
28 May 2026, 13:4611 11 mg/l

Phosphate

orthophosphate, reactive, as P · code 0180 · mg/l

0.015 mg/l

Sampled 17 Sep 2026, 21 days ago · 5 results banked

0.010.0150.020.0250.03mg/l20242025202628 May 2026, 13:46: 0.017 mg/l11 Jun 2026, 13:37: 0.028 mg/l7 Jul 2026, 15:57: 0.014 mg/l3 Aug 2026, 11:19: 0.021 mg/l17 Sep 2026, 10:23: 0.015 mg/l
Every result (5)
SampledResult as publishedReads as
17 Sep 2026, 10:230.015 0.015 mg/l
3 Aug 2026, 11:190.021 0.021 mg/l
7 Jul 2026, 15:570.014 0.014 mg/l
11 Jun 2026, 13:370.028 0.028 mg/l
28 May 2026, 13:460.017 0.017 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

677 µS/cm

Sampled 17 Sep 2026, 21 days ago · 5 results banked

550600650700µS/cm20242025202628 May 2026, 13:46: 670 µS/cm11 Jun 2026, 13:37: 563 µS/cm7 Jul 2026, 15:57: 647 µS/cm3 Aug 2026, 11:19: 662 µS/cm17 Sep 2026, 10:23: 677 µS/cm
Every result (5)
SampledResult as publishedReads as
17 Sep 2026, 10:23677 677 µS/cm
3 Aug 2026, 11:19662 662 µS/cm
7 Jul 2026, 15:57647 647 µS/cm
11 Jun 2026, 13:37563 563 µS/cm
28 May 2026, 13:46670 670 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
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 5 May 2026 – Sep 2026 88.6% 17 Sep 2026
Oxygen, Dissolved as O2 9924 River water 5 May 2026 – Sep 2026 9.01 mg/l 17 Sep 2026
Temperature of Water 0076 River water 5 May 2026 – Sep 2026 14.5 °C 17 Sep 2026
pH 0061 River water 5 May 2026 – Sep 2026 8.15 17 Sep 2026
Ammoniacal Nitrogen as N 0111 River water 5 May 2026 – Sep 2026 below 0.03 mg/l 17 Sep 2026
Nitrate as N 0117 River water 5 May 2026 – Sep 2026 11 mg/l 17 Sep 2026
Orthophosphate, reactive as P 0180 River water 5 May 2026 – Sep 2026 0.015 mg/l 17 Sep 2026
Conductivity at 25 C 0077 River water 5 May 2026 – Sep 2026 677 µS/cm 17 Sep 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 5 May 2026 – Sep 2026 230 mg/l 17 Sep 2026
Ammonia un-ionised as N 0119 River water 5 May 2026 – Sep 2026 below 0.00076 mg/l 17 Sep 2026
Nitrite as N 0118 River water 5 May 2026 – Sep 2026 0.011 mg/l 17 Sep 2026
Nitrogen, Total Oxidised as N 0116 River water 5 May 2026 – Sep 2026 11 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.