Dockerel Brook Brick Bridge 400 m downstream of Over sewage treatment works
EA name: DOCKEREL BK.BRICK BR. 400M D/S OVER STW
Environment Agency sampling point AN-35M35 · 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
- 2 Sep 2026, 13:2729 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 16 since 4 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 539088, 270790As published, to the nearest 1 m. Open in a map
- River, by its own name
- Dockerel Brook Brick Br
- River, by the map
- Dockerel BrookPlaced on a river whose name partly matches its own, 0 m from the line.
- Next gauge downstream
- Soham Lode On the River Great Ouse · 22 km along the river
- Why it was sampled
- Monitoring (national agency policy) (14 samples)
Environmental monitoring statutory (EU directives) (2 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
100.5%
Sampled 2 Sep 2026, 29 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:27 | 100.5 | 100.5% |
| 4 Aug 2026, 10:25 | 31.5 | 31.5% |
| 9 Jul 2026, 09:37 | 26.5 | 26.5% |
| 8 Jun 2026, 09:30 | 24.3 | 24.3% |
| 14 May 2026, 14:02 | 90.6 | 90.6% |
| 1 Apr 2026, 13:12 | 74.4 | 74.4% |
| 14 Jan 2026, 12:17 | 82.7 | 82.7% |
| 28 Oct 2025, 11:00 | 87.7 | 87.7% |
| 15 Jul 2025, 10:51 | 62.8 | 62.8% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.21 mg/l
Sampled 2 Sep 2026, 29 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:27 | 9.21 | 9.21 mg/l |
| 4 Aug 2026, 10:25 | 2.8 | 2.8 mg/l |
| 9 Jul 2026, 09:37 | 2.33 | 2.33 mg/l |
| 8 Jun 2026, 09:30 | 2.36 | 2.36 mg/l |
| 14 May 2026, 14:02 | 9.21 | 9.21 mg/l |
| 1 Apr 2026, 13:12 | 7.79 | 7.79 mg/l |
| 14 Jan 2026, 12:17 | 9.66 | 9.66 mg/l |
| 28 Oct 2025, 11:00 | 9.24 | 9.24 mg/l |
| 15 Jul 2025, 10:51 | 5.8 | 5.8 mg/l |
Water temperature
code 0076 · °C
19.5 °C
Sampled 2 Sep 2026, 29 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:27 | 19.5 | 19.5 °C |
| 4 Aug 2026, 10:25 | 21 | 21 °C |
| 9 Jul 2026, 09:37 | 21.6 | 21.6 °C |
| 8 Jun 2026, 09:30 | 16.6 | 16.6 °C |
| 14 May 2026, 14:02 | 14.5 | 14.5 °C |
| 1 Apr 2026, 13:12 | 13.2 | 13.2 °C |
| 14 Jan 2026, 12:17 | 8.5 | 8.5 °C |
| 28 Oct 2025, 11:00 | 12.9 | 12.9 °C |
| 15 Jul 2025, 10:51 | 19.1 | 19.1 °C |
pH
code 0061
7.72
Sampled 2 Sep 2026, 29 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:27 | 7.72 | 7.72 |
| 4 Aug 2026, 10:25 | 7.13 | 7.13 |
| 9 Jul 2026, 09:37 | 7.19 | 7.19 |
| 8 Jun 2026, 09:30 | 7.2 | 7.2 |
| 14 May 2026, 14:02 | 7.49 | 7.49 |
| 1 Apr 2026, 13:12 | 7.38 | 7.38 |
| 14 Jan 2026, 12:17 | 7.43 | 7.43 |
| 28 Oct 2025, 11:00 | 7.68 | 7.68 |
| 15 Jul 2025, 10:51 | 7.53 | 7.53 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 2 Sep 2026, 29 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Aug 2026, 10:25 | 0.37 | 0.37 mg/l |
| 9 Jul 2026, 09:37 | 0.26 | 0.26 mg/l |
| 8 Jun 2026, 09:30 | 0.81 | 0.81 mg/l |
| 14 May 2026, 14:02 | 0.46 | 0.46 mg/l |
| 1 Apr 2026, 13:12 | 0.75 | 0.75 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
25 mg/l
Sampled 2 Sep 2026, 29 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:27 | 25 | 25 mg/l |
| 4 Aug 2026, 10:25 | 23.4 | 23.4 mg/l |
| 9 Jul 2026, 09:37 | 26.2 | 26.2 mg/l |
| 8 Jun 2026, 09:30 | 22 | 22 mg/l |
| 14 May 2026, 14:02 | 28.6 | 28.6 mg/l |
| 1 Apr 2026, 13:12 | 22.5 | 22.5 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.19 mg/l
Sampled 2 Sep 2026, 29 days ago · 5 results banked
Every result (5)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:27 | 0.19 | 0.19 mg/l |
| 9 Jul 2026, 09:37 | 0.36 | 0.36 mg/l |
| 8 Jun 2026, 09:30 | 1 | 1 mg/l |
| 14 May 2026, 14:02 | 1.4 | 1.4 mg/l |
| 1 Apr 2026, 13:12 | 0.83 | 0.83 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1068 µS/cm
Sampled 2 Sep 2026, 29 days ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Sep 2026, 13:27 | 1068 | 1068 µS/cm |
| 4 Aug 2026, 10:25 | 1119 | 1119 µS/cm |
| 9 Jul 2026, 09:37 | 1087 | 1087 µS/cm |
| 8 Jun 2026, 09:30 | 1020 | 1020 µS/cm |
| 14 May 2026, 14:02 | 1024 | 1024 µS/cm |
| 1 Apr 2026, 13:12 | 1055 | 1055 µS/cm |
| 14 Jan 2026, 12:17 | 1011 | 1011 µS/cm |
| 28 Oct 2025, 11:00 | 1055 | 1055 µS/cm |
| 15 Jul 2025, 10:51 | 1032 | 1032 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 | 9 | Jul 2025 – Sep 2026 | 100.5% 2 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 9 | Jul 2025 – Sep 2026 | 9.21 mg/l 2 Sep 2026 |
| Temperature of Water 0076 | River water | 9 | Jul 2025 – Sep 2026 | 19.5 °C 2 Sep 2026 |
| pH 0061 | River water | 9 | Jul 2025 – Sep 2026 | 7.72 2 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 6 | Apr 2026 – Sep 2026 | below 0.03 mg/l 2 Sep 2026 |
| Nitrate as N 0117 | River water | 6 | Apr 2026 – Sep 2026 | 25 mg/l 2 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 5 | Apr 2026 – Sep 2026 | 0.19 mg/l 2 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 9 | Jul 2025 – Sep 2026 | 1068 µS/cm 2 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 6 | Apr 2026 – Sep 2026 | 130 mg/l 2 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 6 | Apr 2026 – Sep 2026 | below 0.00058 mg/l 2 Sep 2026 |
| Iron, Dissolved 6460 | River water | 12 | Oct 2023 – Jul 2026 | 61 µg/l 9 Jul 2026 |
| Nitrite as N 0118 | River water | 6 | Apr 2026 – Sep 2026 | 0.028 mg/l 2 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 6 | Apr 2026 – Sep 2026 | 25 mg/l 2 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.