Oakhanger Stream above Slea
EA name: OAKHANGER STREAM ABOVE SLEA
Environment Agency sampling point TH-PWER0127 · 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 Sep 2026, 11:3221 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 17 since 2 Apr 2025 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 478160, 137000As published, to the nearest 10 m. Open in a map
- River, by its own name
- Oakhanger Stream
- River, by the map
- Oakhanger StreamPlaced on the river its name gives, 3 m from the line.
- Next gauge downstream
- Tilford On the River Wey · 18 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (17 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
80.8%
Sampled 10 Sep 2026, 21 days ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:32 | 80.8 | 80.8% |
| 2 Jul 2026, 17:18 | 75.6 | 75.6% |
| 12 Jun 2026, 16:17 | 79 | 79% |
| 27 May 2026, 13:33 | 80.3 | 80.3% |
| 20 Apr 2026, 14:40 | 98.6 | 98.6% |
| 11 Mar 2026, 11:45 | 91.8 | 91.8% |
| 5 Feb 2026, 12:51 | 93.4 | 93.4% |
| 22 Jan 2026, 11:18 | 89.1 | 89.1% |
| 4 Dec 2025, 13:46 | 88.5 | 88.5% |
| 12 Nov 2025, 13:02 | 79.9 | 79.9% |
| 8 Oct 2025, 15:50 | 82.6 | 82.6% |
| 4 Sep 2025, 15:38 | 77.9 | 77.9% |
| 1 Aug 2025, 14:57 | 84.1 | 84.1% |
| 4 Jul 2025, 14:18 | 82.3 | 82.3% |
| 5 Jun 2025, 11:34 | 73.7 | 73.7% |
| 6 May 2025, 15:50 | 96.1 | 96.1% |
| 2 Apr 2025, 11:43 | 98.7 | 98.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.38 mg/l
Sampled 10 Sep 2026, 21 days ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:32 | 8.38 | 8.38 mg/l |
| 2 Jul 2026, 17:18 | 7.14 | 7.14 mg/l |
| 12 Jun 2026, 16:17 | 7.84 | 7.84 mg/l |
| 20 Apr 2026, 14:40 | 10.8 | 10.8 mg/l |
| 11 Mar 2026, 11:45 | 10.4 | 10.4 mg/l |
| 5 Feb 2026, 12:51 | 11 | 11 mg/l |
| 22 Jan 2026, 11:18 | 10.4 | 10.4 mg/l |
| 4 Dec 2025, 13:46 | 10.4 | 10.4 mg/l |
| 12 Nov 2025, 13:02 | 8.47 | 8.47 mg/l |
| 8 Oct 2025, 15:50 | 8.72 | 8.72 mg/l |
| 4 Sep 2025, 15:38 | 7.69 | 7.69 mg/l |
| 1 Aug 2025, 14:57 | 8.24 | 8.24 mg/l |
| 4 Jul 2025, 14:18 | 7.95 | 7.95 mg/l |
| 5 Jun 2025, 11:34 | 7.75 | 7.75 mg/l |
| 6 May 2025, 15:50 | 10.6 | 10.6 mg/l |
| 2 Apr 2025, 11:43 | 11.3 | 11.3 mg/l |
Water temperature
code 0076 · °C
13.6 °C
Sampled 10 Sep 2026, 21 days ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:32 | 13.6 | 13.6 °C |
| 2 Jul 2026, 17:18 | 18 | 18 °C |
| 12 Jun 2026, 16:17 | 15.6 | 15.6 °C |
| 20 Apr 2026, 14:40 | 11.2 | 11.2 °C |
| 11 Mar 2026, 11:45 | 9.9 | 9.9 °C |
| 5 Feb 2026, 12:51 | 8.3 | 8.3 °C |
| 22 Jan 2026, 11:18 | 8.5 | 8.5 °C |
| 4 Dec 2025, 13:46 | 8.2 | 8.2 °C |
| 12 Nov 2025, 13:02 | 12.6 | 12.6 °C |
| 8 Oct 2025, 15:50 | 12.8 | 12.8 °C |
| 4 Sep 2025, 15:38 | 15.9 | 15.9 °C |
| 1 Aug 2025, 14:57 | 16.2 | 16.2 °C |
| 4 Jul 2025, 14:18 | 16.9 | 16.9 °C |
| 5 Jun 2025, 11:34 | 13 | 13 °C |
| 6 May 2025, 15:50 | 10.7 | 10.7 °C |
| 2 Apr 2025, 11:43 | 9.4 | 9.4 °C |
pH
code 0061
7.38
Sampled 10 Sep 2026, 21 days ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:32 | 7.38 | 7.38 |
| 2 Jul 2026, 17:18 | 7.4 | 7.4 |
| 12 Jun 2026, 16:17 | 7.29 | 7.29 |
| 27 May 2026, 13:33 | 7.72 | 7.72 |
| 20 Apr 2026, 14:40 | 7.63 | 7.63 |
| 11 Mar 2026, 11:45 | 7.8 | 7.8 |
| 5 Feb 2026, 12:51 | 7.77 | 7.77 |
| 22 Jan 2026, 11:18 | 7.69 | 7.69 |
| 4 Dec 2025, 13:46 | 7.38 | 7.38 |
| 12 Nov 2025, 13:02 | 7.2 | 7.2 |
| 8 Oct 2025, 15:50 | 7.19 | 7.19 |
| 4 Sep 2025, 15:38 | 7.33 | 7.33 |
| 1 Aug 2025, 14:57 | 7.39 | 7.39 |
| 4 Jul 2025, 14:18 | 7.45 | 7.45 |
| 5 Jun 2025, 11:34 | 7.25 | 7.25 |
| 6 May 2025, 15:50 | 7.58 | 7.58 |
| 2 Apr 2025, 11:43 | 7.67 | 7.67 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 10 Sep 2026, 21 days ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jul 2026, 17:18 | 0.037 | 0.037 mg/l |
| 12 Jun 2026, 16:17 | 0.037 | 0.037 mg/l |
| 27 May 2026, 13:33 | 0.056 | 0.056 mg/l |
| 20 Apr 2026, 14:40 | 0.036 | 0.036 mg/l |
| 11 Mar 2026, 11:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Feb 2026, 12:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jan 2026, 11:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Dec 2025, 13:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Nov 2025, 13:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Oct 2025, 15:50 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Sep 2025, 15:38 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Aug 2025, 14:57 | 0.051 | 0.051 mg/l |
| 4 Jul 2025, 14:18 | 0.04 | 0.04 mg/l |
| 5 Jun 2025, 11:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 May 2025, 15:50 | 0.043 | 0.043 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.766 mg/l
Sampled 10 Sep 2026, 21 days ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:32 | 0.766 | 0.766 mg/l |
| 2 Jul 2026, 17:18 | 1.19 | 1.19 mg/l |
| 12 Jun 2026, 16:17 | 1.29 | 1.29 mg/l |
| 27 May 2026, 13:33 | 1.38 | 1.38 mg/l |
| 20 Apr 2026, 14:40 | 2 | 2 mg/l |
| 11 Mar 2026, 11:45 | 2.09 | 2.09 mg/l |
| 5 Feb 2026, 12:51 | 2.5 | 2.5 mg/l |
| 22 Jan 2026, 11:18 | 2.39 | 2.39 mg/l |
| 4 Dec 2025, 13:46 | 0.196 | 0.196 mg/l |
| 12 Nov 2025, 13:02 | 2.3 | 2.3 mg/l |
| 8 Oct 2025, 15:50 | 0.994 | 0.994 mg/l |
| 4 Sep 2025, 15:38 | 1.3 | 1.3 mg/l |
| 1 Aug 2025, 14:57 | 0.964 | 0.964 mg/l |
| 4 Jul 2025, 14:18 | 1.09 | 1.09 mg/l |
| 5 Jun 2025, 11:34 | 1.39 | 1.39 mg/l |
| 6 May 2025, 15:50 | 1.89 | 1.89 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.093 mg/l
Sampled 10 Sep 2026, 21 days ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:32 | 0.093 | 0.093 mg/l |
| 2 Jul 2026, 17:18 | 0.13 | 0.13 mg/l |
| 12 Jun 2026, 16:17 | 0.13 | 0.13 mg/l |
| 27 May 2026, 13:33 | 0.16 | 0.16 mg/l |
| 20 Apr 2026, 14:40 | 0.12 | 0.12 mg/l |
| 11 Mar 2026, 11:45 | 0.14 | 0.14 mg/l |
| 5 Feb 2026, 12:51 | 0.15 | 0.15 mg/l |
| 22 Jan 2026, 11:18 | 0.23 | 0.23 mg/l |
| 4 Dec 2025, 13:46 | 0.16 | 0.16 mg/l |
| 12 Nov 2025, 13:02 | 0.16 | 0.16 mg/l |
| 8 Oct 2025, 15:50 | 0.076 | 0.076 mg/l |
| 4 Sep 2025, 15:38 | 0.11 | 0.11 mg/l |
| 1 Aug 2025, 14:57 | 0.14 | 0.14 mg/l |
| 4 Jul 2025, 14:18 | 0.16 | 0.16 mg/l |
| 5 Jun 2025, 11:34 | 0.12 | 0.12 mg/l |
| 6 May 2025, 15:50 | 0.12 | 0.12 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
308 µS/cm
Sampled 10 Sep 2026, 21 days ago · 17 results banked
Every result (17)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Sep 2026, 11:32 | 308 | 308 µS/cm |
| 2 Jul 2026, 17:18 | 331 | 331 µS/cm |
| 12 Jun 2026, 16:17 | 315 | 315 µS/cm |
| 27 May 2026, 13:33 | 360 | 360 µS/cm |
| 20 Apr 2026, 14:40 | 408 | 408 µS/cm |
| 11 Mar 2026, 11:45 | 402 | 402 µS/cm |
| 5 Feb 2026, 12:51 | 381 | 381 µS/cm |
| 22 Jan 2026, 11:18 | 291 | 291 µS/cm |
| 4 Dec 2025, 13:46 | 323 | 323 µS/cm |
| 12 Nov 2025, 13:02 | 304 | 304 µS/cm |
| 8 Oct 2025, 15:50 | 268 | 268 µS/cm |
| 4 Sep 2025, 15:38 | 292 | 292 µS/cm |
| 1 Aug 2025, 14:57 | 278 | 278 µS/cm |
| 4 Jul 2025, 14:18 | 313 | 313 µS/cm |
| 5 Jun 2025, 11:34 | 330 | 330 µS/cm |
| 6 May 2025, 15:50 | 361 | 361 µS/cm |
| 2 Apr 2025, 11:43 | 415 | 415 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 | 17 | Apr 2025 – Sep 2026 | 80.8% 10 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 16 | Apr 2025 – Sep 2026 | 8.38 mg/l 10 Sep 2026 |
| Temperature of Water 0076 | River water | 16 | Apr 2025 – Sep 2026 | 13.6 °C 10 Sep 2026 |
| pH 0061 | River water | 17 | Apr 2025 – Sep 2026 | 7.38 10 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 16 | May 2025 – Sep 2026 | below 0.03 mg/l 10 Sep 2026 |
| Nitrate as N 0117 | River water | 16 | May 2025 – Sep 2026 | 0.766 mg/l 10 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 16 | May 2025 – Sep 2026 | 0.093 mg/l 10 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 17 | Apr 2025 – Sep 2026 | 308 µS/cm 10 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 16 | May 2025 – Sep 2026 | 73 mg/l 10 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 15 | May 2025 – Sep 2026 | below 0.00017 mg/l 10 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 10 | May 2025 – Mar 2026 | 1.3 mg/l 11 Mar 2026 |
| Nitrite as N 0118 | River water | 16 | May 2025 – Sep 2026 | below 0.004 mg/l 10 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 16 | May 2025 – Sep 2026 | 0.77 mg/l 10 Sep 2026 |
| Phosphorus, Total as P 0348 | River water | 9 | Apr 2025 – Mar 2026 | 0.17 mg/l 11 Mar 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.