Hey Brook above Pennington Flash
EA name: HEY BROOK ABOVE PENNINGTON FLASH
Environment Agency sampling point NW-88002453 · 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
- 10 Mar 2025, 14:3419 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 8 Oct 2026 and had nothing newer.
- Samples banked
- 18 since 30 Oct 2023 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 362604, 399416As published, to the nearest 1 m. Open in a map
- River, by its own name
- Hey Brook
- River, by the map
- Hey BrookPlaced on the river its name gives, 50 m from the line.
- Next gauge downstream
- Little Woolden Hall On the Glaze Brook · 11 km along the river
- Nearest gauge upstream
- Platt Bridge, Templeton Road On the Hey Brook · 5.1 km along the river
- Why it was sampled
- Monitoring (national agency policy) (18 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
97.8%
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 14:34 | 97.8 | 97.8% |
| 19 Feb 2025, 09:30 | 93.2 | 93.2% |
| 20 Jan 2025, 11:42 | 91.7 | 91.7% |
| 6 Dec 2024, 11:58 | 83.2 | 83.2% |
| 20 Nov 2024, 14:37 | 89.5 | 89.5% |
| 16 Oct 2024, 09:05 | 84.9 | 84.9% |
| 25 Sep 2024, 10:38 | 83.6 | 83.6% |
| 21 Aug 2024, 10:22 | 74.9 | 74.9% |
| 18 Jul 2024, 09:36 | 80.2 | 80.2% |
| 17 Jun 2024, 10:52 | 85.2 | 85.2% |
| 15 May 2024, 08:52 | 66 | 66% |
| 15 Apr 2024, 12:50 | 89 | 89% |
| 21 Mar 2024, 09:59 | 89.9 | 89.9% |
| 21 Feb 2024, 12:34 | 91.1 | 91.1% |
| 15 Jan 2024, 10:32 | 87.1 | 87.1% |
| 5 Dec 2023, 13:11 | 82 | 82% |
| 22 Nov 2023, 12:14 | 80.4 | 80.4% |
| 30 Oct 2023, 08:43 | 82 | 82% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.1 mg/l
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 14:34 | 11.1 | 11.1 mg/l |
| 19 Feb 2025, 09:30 | 12.5 | 12.5 mg/l |
| 20 Jan 2025, 11:42 | 12 | 12 mg/l |
| 6 Dec 2024, 11:58 | 9.94 | 9.94 mg/l |
| 20 Nov 2024, 14:37 | 11.6 | 11.6 mg/l |
| 16 Oct 2024, 09:05 | 9.13 | 9.13 mg/l |
| 25 Sep 2024, 10:38 | 8.91 | 8.91 mg/l |
| 21 Aug 2024, 10:22 | 7.58 | 7.58 mg/l |
| 18 Jul 2024, 09:36 | 7.76 | 7.76 mg/l |
| 17 Jun 2024, 10:52 | 8.7 | 8.7 mg/l |
| 15 May 2024, 08:52 | 6.7 | 6.7 mg/l |
| 15 Apr 2024, 12:50 | 10.1 | 10.1 mg/l |
| 21 Mar 2024, 09:59 | 10.3 | 10.3 mg/l |
| 21 Feb 2024, 12:34 | 10.7 | 10.7 mg/l |
| 15 Jan 2024, 10:32 | 11.7 | 11.7 mg/l |
| 5 Dec 2023, 13:11 | 10.4 | 10.4 mg/l |
| 22 Nov 2023, 12:14 | 9.28 | 9.28 mg/l |
| 30 Oct 2023, 08:43 | 9.11 | 9.11 mg/l |
Water temperature
code 0076 · °C
9.7 °C
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 14:34 | 9.7 | 9.7 °C |
| 19 Feb 2025, 09:30 | 3 | 3 °C |
| 20 Jan 2025, 11:42 | 4.1 | 4.1 °C |
| 6 Dec 2024, 11:58 | 7.6 | 7.6 °C |
| 20 Nov 2024, 14:37 | 4.4 | 4.4 °C |
| 16 Oct 2024, 09:05 | 12 | 12 °C |
| 25 Sep 2024, 10:38 | 12.4 | 12.4 °C |
| 21 Aug 2024, 10:22 | 14.7 | 14.7 °C |
| 18 Jul 2024, 09:36 | 16.8 | 16.8 °C |
| 17 Jun 2024, 10:52 | 14.3 | 14.3 °C |
| 15 May 2024, 08:52 | 14.6 | 14.6 °C |
| 15 Apr 2024, 12:50 | 9.5 | 9.5 °C |
| 21 Mar 2024, 09:59 | 9.5 | 9.5 °C |
| 21 Feb 2024, 12:34 | 8.4 | 8.4 °C |
| 15 Jan 2024, 10:32 | 3 | 3 °C |
| 5 Dec 2023, 13:11 | 5.2 | 5.2 °C |
| 22 Nov 2023, 12:14 | 9 | 9 °C |
| 30 Oct 2023, 08:43 | 10.6 | 10.6 °C |
pH
code 0061
7.99
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 14:34 | 7.99 | 7.99 |
| 19 Feb 2025, 09:30 | 7.95 | 7.95 |
| 20 Jan 2025, 11:42 | 7.74 | 7.74 |
| 6 Dec 2024, 11:58 | 7.55 | 7.55 |
| 20 Nov 2024, 14:37 | 7.9 | 7.9 |
| 16 Oct 2024, 09:05 | 7.63 | 7.63 |
| 25 Sep 2024, 10:38 | 7.8 | 7.8 |
| 21 Aug 2024, 10:22 | 7.86 | 7.86 |
| 18 Jul 2024, 09:36 | 7.73 | 7.73 |
| 17 Jun 2024, 10:52 | 8.01 | 8.01 |
| 15 May 2024, 08:52 | 7.7 | 7.7 |
| 15 Apr 2024, 12:50 | 7.71 | 7.71 |
| 21 Mar 2024, 09:59 | 7.71 | 7.71 |
| 21 Feb 2024, 12:34 | 7.66 | 7.66 |
| 15 Jan 2024, 10:32 | 7.82 | 7.82 |
| 5 Dec 2023, 13:11 | 7.5 | 7.5 |
| 22 Nov 2023, 12:14 | 7.56 | 7.56 |
| 30 Oct 2023, 08:43 | 7.7 | 7.7 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.052 mg/l
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 14:34 | 0.052 | 0.052 mg/l |
| 19 Feb 2025, 09:30 | 0.17 | 0.17 mg/l |
| 20 Jan 2025, 11:42 | 0.25 | 0.25 mg/l |
| 6 Dec 2024, 11:58 | 0.18 | 0.18 mg/l |
| 20 Nov 2024, 14:37 | 0.12 | 0.12 mg/l |
| 16 Oct 2024, 09:05 | 0.081 | 0.081 mg/l |
| 25 Sep 2024, 10:38 | 0.073 | 0.073 mg/l |
| 21 Aug 2024, 10:22 | 0.054 | 0.054 mg/l |
| 18 Jul 2024, 09:36 | 0.11 | 0.11 mg/l |
| 17 Jun 2024, 10:52 | 0.072 | 0.072 mg/l |
| 15 May 2024, 08:52 | 0.12 | 0.12 mg/l |
| 15 Apr 2024, 12:50 | 0.11 | 0.11 mg/l |
| 21 Mar 2024, 09:59 | 0.081 | 0.081 mg/l |
| 21 Feb 2024, 12:34 | 0.11 | 0.11 mg/l |
| 15 Jan 2024, 10:32 | 0.21 | 0.21 mg/l |
| 5 Dec 2023, 13:11 | 0.37 | 0.37 mg/l |
| 22 Nov 2023, 12:14 | 0.089 | 0.089 mg/l |
| 30 Oct 2023, 08:43 | 0.068 | 0.068 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.09 mg/l
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 14:34 | 1.09 | 1.09 mg/l |
| 19 Feb 2025, 09:30 | 1.39 | 1.39 mg/l |
| 20 Jan 2025, 11:42 | 1.58 | 1.58 mg/l |
| 6 Dec 2024, 11:58 | 1.47 | 1.47 mg/l |
| 20 Nov 2024, 14:37 | 1.88 | 1.88 mg/l |
| 16 Oct 2024, 09:05 | 1.46 | 1.46 mg/l |
| 25 Sep 2024, 10:38 | 1.77 | 1.77 mg/l |
| 21 Aug 2024, 10:22 | 0.95 | 0.95 mg/l |
| 18 Jul 2024, 09:36 | 1.37 | 1.37 mg/l |
| 17 Jun 2024, 10:52 | 1.57 | 1.57 mg/l |
| 15 May 2024, 08:52 | 1.45 | 1.45 mg/l |
| 15 Apr 2024, 12:50 | 1.17 | 1.17 mg/l |
| 21 Mar 2024, 09:59 | 1.28 | 1.28 mg/l |
| 21 Feb 2024, 12:34 | 0.982 | 0.982 mg/l |
| 15 Jan 2024, 10:32 | 1.48 | 1.48 mg/l |
| 5 Dec 2023, 13:11 | 1.47 | 1.47 mg/l |
| 22 Nov 2023, 12:14 | 1.28 | 1.28 mg/l |
| 30 Oct 2023, 08:43 | 1.17 | 1.17 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.035 mg/l
Sampled 10 Mar 2025, 19 months ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 14:34 | 0.035 | 0.035 mg/l |
| 19 Feb 2025, 09:30 | 0.033 | 0.033 mg/l |
| 20 Jan 2025, 11:42 | 0.033 | 0.033 mg/l |
| 20 Nov 2024, 14:37 | 0.085 | 0.085 mg/l |
| 16 Oct 2024, 09:05 | 0.085 | 0.085 mg/l |
| 25 Sep 2024, 10:38 | 0.11 | 0.11 mg/l |
| 21 Aug 2024, 10:22 | 0.1 | 0.1 mg/l |
| 18 Jul 2024, 09:36 | 0.1 | 0.1 mg/l |
| 17 Jun 2024, 10:52 | 0.07 | 0.07 mg/l |
| 15 May 2024, 08:52 | 0.067 | 0.067 mg/l |
| 15 Apr 2024, 12:50 | 0.057 | 0.057 mg/l |
| 21 Mar 2024, 09:59 | 0.056 | 0.056 mg/l |
| 21 Feb 2024, 12:34 | 0.055 | 0.055 mg/l |
| 15 Jan 2024, 10:32 | 0.05 | 0.05 mg/l |
| 5 Dec 2023, 13:11 | 0.092 | 0.092 mg/l |
| 22 Nov 2023, 12:14 | 0.079 | 0.079 mg/l |
| 30 Oct 2023, 08:43 | 0.05 | 0.05 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
790 µS/cm
Sampled 10 Mar 2025, 19 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 14:34 | 790 | 790 µS/cm |
| 19 Feb 2025, 09:30 | 819 | 819 µS/cm |
| 20 Jan 2025, 11:42 | 716 | 716 µS/cm |
| 6 Dec 2024, 11:58 | 299 | 299 µS/cm |
| 20 Nov 2024, 14:37 | 559 | 559 µS/cm |
| 16 Oct 2024, 09:05 | 561 | 561 µS/cm |
| 25 Sep 2024, 10:38 | 535 | 535 µS/cm |
| 21 Aug 2024, 10:22 | 826 | 826 µS/cm |
| 18 Jul 2024, 09:36 | 606 | 606 µS/cm |
| 17 Jun 2024, 10:52 | 611 | 611 µS/cm |
| 15 May 2024, 08:52 | 670 | 670 µS/cm |
| 15 Apr 2024, 12:50 | 526 | 526 µS/cm |
| 21 Mar 2024, 09:59 | 506 | 506 µS/cm |
| 21 Feb 2024, 12:34 | 370 | 370 µS/cm |
| 15 Jan 2024, 10:32 | 731 | 731 µS/cm |
| 5 Dec 2023, 13:11 | 383 | 383 µS/cm |
| 22 Nov 2023, 12:14 | 515 | 515 µS/cm |
| 30 Oct 2023, 08:43 | 512 | 512 µS/cm |
Everything measured here
14 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 14 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 18 | Oct 2023 – Mar 2025 | 97.8% 10 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 18 | Oct 2023 – Mar 2025 | 11.1 mg/l 10 Mar 2025 |
| Temperature of Water 0076 | River water | 18 | Oct 2023 – Mar 2025 | 9.7 °C 10 Mar 2025 |
| pH 0061 | River water | 18 | Oct 2023 – Mar 2025 | 7.99 10 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 18 | Oct 2023 – Mar 2025 | 0.052 mg/l 10 Mar 2025 |
| Nitrate as N 0117 | River water | 18 | Oct 2023 – Mar 2025 | 1.09 mg/l 10 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 17 | Oct 2023 – Mar 2025 | 0.035 mg/l 10 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 18 | Oct 2023 – Mar 2025 | 790 µS/cm 10 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 18 | Oct 2023 – Mar 2025 | 190 mg/l 10 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 18 | Oct 2023 – Mar 2025 | 0.00091 mg/l 10 Mar 2025 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – Mar 2025 | 1.7 mg/l 10 Mar 2025 |
| Nitrite as N 0118 | River water | 18 | Oct 2023 – Mar 2025 | 0.013 mg/l 10 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Oct 2023 – Mar 2025 | 1.1 mg/l 10 Mar 2025 |
| Phosphorus, Total as P 0348 | River water | 12 | Apr 2024 – Mar 2025 | 0.077 mg/l 10 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.