Southleigh Stream
EA name: SOUTHLEIGH STRM (also listed as “SOUTHLEIGH STREAM AT SOUTH LEIGH”)
Environment Agency sampling point SO-G0003610 · 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
- 6 Mar 2026, 11:297 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 30 Sep 2026 and had nothing newer.
- Samples banked
- 22 since 7 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 474731, 106223As published, to the nearest 1 m. Open in a map
- River, by its own name
- Southleigh Stream
- River, by the map
- Not placedIts name gives Southleigh Stream; the only line close by, 2 m away, is West Brook and is not traced into it. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
94.7%
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 11:29 | 94.7 | 94.7% |
| 18 Feb 2026, 09:01 | 96.6 | 96.6% |
| 22 Jan 2026, 15:36 | 91.2 | 91.2% |
| 16 Dec 2025, 08:56 | 88.8 | 88.8% |
| 27 Nov 2025, 08:53 | 86.4 | 86.4% |
| 7 Oct 2025, 13:57 | 87.8 | 87.8% |
| 2 Sep 2025, 12:45 | 83.3 | 83.3% |
| 4 Aug 2025, 11:35 | 61.2 | 61.2% |
| 2 Jul 2025, 08:26 | 67.7 | 67.7% |
| 5 Jun 2025, 12:18 | 75.2 | 75.2% |
| 9 May 2025, 08:39 | 84.7 | 84.7% |
| 23 Apr 2025, 08:25 | 83.9 | 83.9% |
| 10 Mar 2025, 08:29 | 95 | 95% |
| 18 Feb 2025, 08:53 | 95.7 | 95.7% |
| 28 Jan 2025, 08:31 | 92.6 | 92.6% |
| 9 Dec 2024, 10:59 | 91.8 | 91.8% |
| 6 Nov 2024, 07:59 | 86.6 | 86.6% |
| 7 Oct 2024, 08:32 | 86.3 | 86.3% |
| 5 Sep 2024, 09:39 | 80.7 | 80.7% |
| 6 Aug 2024, 13:32 | 68.4 | 68.4% |
| 15 Jul 2024, 09:18 | 80.9 | 80.9% |
| 7 Jun 2024, 13:41 | 93.9 | 93.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.8 mg/l
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 11:29 | 10.8 | 10.8 mg/l |
| 18 Feb 2026, 09:01 | 11.7 | 11.7 mg/l |
| 22 Jan 2026, 15:36 | 10.5 | 10.5 mg/l |
| 16 Dec 2025, 08:56 | 9.96 | 9.96 mg/l |
| 27 Nov 2025, 08:53 | 9.76 | 9.76 mg/l |
| 7 Oct 2025, 13:57 | 8.83 | 8.83 mg/l |
| 2 Sep 2025, 12:45 | 7.98 | 7.98 mg/l |
| 4 Aug 2025, 11:35 | 5.83 | 5.83 mg/l |
| 2 Jul 2025, 08:26 | 6.23 | 6.23 mg/l |
| 5 Jun 2025, 12:18 | 7.82 | 7.82 mg/l |
| 9 May 2025, 08:39 | 9.54 | 9.54 mg/l |
| 23 Apr 2025, 08:25 | 9.19 | 9.19 mg/l |
| 10 Mar 2025, 08:29 | 10.9 | 10.9 mg/l |
| 18 Feb 2025, 08:53 | 12.1 | 12.1 mg/l |
| 28 Jan 2025, 08:31 | 11.1 | 11.1 mg/l |
| 9 Dec 2024, 10:59 | 10.6 | 10.6 mg/l |
| 6 Nov 2024, 07:59 | 9.4 | 9.4 mg/l |
| 7 Oct 2024, 08:32 | 8.99 | 8.99 mg/l |
| 5 Sep 2024, 09:39 | 8.17 | 8.17 mg/l |
| 6 Aug 2024, 13:32 | 6.46 | 6.46 mg/l |
| 15 Jul 2024, 09:18 | 8.17 | 8.17 mg/l |
| 7 Jun 2024, 13:41 | 9.55 | 9.55 mg/l |
Water temperature
code 0076 · °C
9.6 °C
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 11:29 | 9.6 | 9.6 °C |
| 18 Feb 2026, 09:01 | 6.9 | 6.9 °C |
| 22 Jan 2026, 15:36 | 9 | 9 °C |
| 16 Dec 2025, 08:56 | 10.2 | 10.2 °C |
| 27 Nov 2025, 08:53 | 9.9 | 9.9 °C |
| 7 Oct 2025, 13:57 | 15 | 15 °C |
| 2 Sep 2025, 12:45 | 17.3 | 17.3 °C |
| 4 Aug 2025, 11:35 | 17.6 | 17.6 °C |
| 2 Jul 2025, 08:26 | 19.3 | 19.3 °C |
| 5 Jun 2025, 12:18 | 13.5 | 13.5 °C |
| 9 May 2025, 08:39 | 10 | 10 °C |
| 23 Apr 2025, 08:25 | 11.2 | 11.2 °C |
| 10 Mar 2025, 08:29 | 9.1 | 9.1 °C |
| 18 Feb 2025, 08:53 | 5.2 | 5.2 °C |
| 28 Jan 2025, 08:31 | 7.4 | 7.4 °C |
| 9 Dec 2024, 10:59 | 9 | 9 °C |
| 6 Nov 2024, 07:59 | 11.6 | 11.6 °C |
| 7 Oct 2024, 08:32 | 13.4 | 13.4 °C |
| 5 Sep 2024, 09:39 | 14.7 | 14.7 °C |
| 6 Aug 2024, 13:32 | 18 | 18 °C |
| 15 Jul 2024, 09:18 | 14.8 | 14.8 °C |
| 7 Jun 2024, 13:41 | 14.5 | 14.5 °C |
pH
code 0061
7.79
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 11:29 | 7.79 | 7.79 |
| 18 Feb 2026, 09:01 | 7.77 | 7.77 |
| 22 Jan 2026, 15:36 | 7.67 | 7.67 |
| 16 Dec 2025, 08:56 | 7.91 | 7.91 |
| 27 Nov 2025, 08:53 | 7.74 | 7.74 |
| 7 Oct 2025, 13:57 | 7.76 | 7.76 |
| 2 Sep 2025, 12:45 | 7.64 | 7.64 |
| 4 Aug 2025, 11:35 | 7.72 | 7.72 |
| 2 Jul 2025, 08:26 | 7.92 | 7.92 |
| 5 Jun 2025, 12:18 | 7.79 | 7.79 |
| 9 May 2025, 08:39 | 7.87 | 7.87 |
| 23 Apr 2025, 08:25 | 7.59 | 7.59 |
| 10 Mar 2025, 08:29 | 7.79 | 7.79 |
| 18 Feb 2025, 08:53 | 7.88 | 7.88 |
| 28 Jan 2025, 08:31 | 7.38 | 7.38 |
| 9 Dec 2024, 10:59 | 8.03 | 8.03 |
| 6 Nov 2024, 07:59 | 7.92 | 7.92 |
| 7 Oct 2024, 08:32 | 7.87 | 7.87 |
| 5 Sep 2024, 09:39 | 7.75 | 7.75 |
| 6 Aug 2024, 13:32 | 7.73 | 7.73 |
| 15 Jul 2024, 09:18 | 7.88 | 7.88 |
| 7 Jun 2024, 13:41 | 8.11 | 8.11 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.087 mg/l
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 11:29 | 0.087 | 0.087 mg/l |
| 18 Feb 2026, 09:01 | 0.035 | 0.035 mg/l |
| 22 Jan 2026, 15:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Dec 2025, 08:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 Nov 2025, 08:53 | 0.032 | 0.032 mg/l |
| 7 Oct 2025, 13:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Sep 2025, 12:45 | 0.03 | 0.03 mg/l |
| 4 Aug 2025, 11:35 | 0.17 | 0.17 mg/l |
| 2 Jul 2025, 08:26 | 0.063 | 0.063 mg/l |
| 5 Jun 2025, 12:18 | 0.32 | 0.32 mg/l |
| 9 May 2025, 08:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Apr 2025, 08:25 | 0.15 | 0.15 mg/l |
| 10 Mar 2025, 08:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Feb 2025, 08:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Jan 2025, 08:31 | 0.045 | 0.045 mg/l |
| 9 Dec 2024, 10:59 | 0.035 | 0.035 mg/l |
| 6 Nov 2024, 07:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Oct 2024, 08:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Sep 2024, 09:39 | 0.034 | 0.034 mg/l |
| 6 Aug 2024, 13:32 | 0.56 | 0.56 mg/l |
| 15 Jul 2024, 09:18 | 0.034 | 0.034 mg/l |
| 7 Jun 2024, 13:41 | 0.032 | 0.032 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
1.39 mg/l
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 11:29 | 1.39 | 1.39 mg/l |
| 18 Feb 2026, 09:01 | 1.8 | 1.8 mg/l |
| 22 Jan 2026, 15:36 | 2.69 | 2.69 mg/l |
| 16 Dec 2025, 08:56 | 2.59 | 2.59 mg/l |
| 27 Nov 2025, 08:53 | 3.59 | 3.59 mg/l |
| 7 Oct 2025, 13:57 | 1.98 | 1.98 mg/l |
| 2 Sep 2025, 12:45 | 1.09 | 1.09 mg/l |
| 4 Aug 2025, 11:35 | 2.51 | 2.51 mg/l |
| 2 Jul 2025, 08:26 | 1.35 | 1.35 mg/l |
| 5 Jun 2025, 12:18 | 3.11 | 3.11 mg/l |
| 9 May 2025, 08:39 | 2.29 | 2.29 mg/l |
| 23 Apr 2025, 08:25 | 1.27 | 1.27 mg/l |
| 10 Mar 2025, 08:29 | 1.59 | 1.59 mg/l |
| 18 Feb 2025, 08:53 | 1.79 | 1.79 mg/l |
| 28 Jan 2025, 08:31 | 1.89 | 1.89 mg/l |
| 9 Dec 2024, 10:59 | 2.29 | 2.29 mg/l |
| 6 Nov 2024, 07:59 | 2.29 | 2.29 mg/l |
| 7 Oct 2024, 08:32 | 2.09 | 2.09 mg/l |
| 5 Sep 2024, 09:39 | 3.38 | 3.38 mg/l |
| 6 Aug 2024, 13:32 | 3.51 | 3.51 mg/l |
| 15 Jul 2024, 09:18 | 3.18 | 3.18 mg/l |
| 7 Jun 2024, 13:41 | 2.98 | 2.98 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.045 mg/l
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 11:29 | 0.045 | 0.045 mg/l |
| 18 Feb 2026, 09:01 | 0.052 | 0.052 mg/l |
| 22 Jan 2026, 15:36 | 0.061 | 0.061 mg/l |
| 16 Dec 2025, 08:56 | 0.061 | 0.061 mg/l |
| 27 Nov 2025, 08:53 | 0.057 | 0.057 mg/l |
| 7 Oct 2025, 13:57 | 0.11 | 0.11 mg/l |
| 2 Sep 2025, 12:45 | 0.077 | 0.077 mg/l |
| 4 Aug 2025, 11:35 | 0.15 | 0.15 mg/l |
| 2 Jul 2025, 08:26 | 0.25 | 0.25 mg/l |
| 5 Jun 2025, 12:18 | 0.3 | 0.3 mg/l |
| 9 May 2025, 08:39 | 0.18 | 0.18 mg/l |
| 23 Apr 2025, 08:25 | 0.054 | 0.054 mg/l |
| 10 Mar 2025, 08:29 | 0.039 | 0.039 mg/l |
| 18 Feb 2025, 08:53 | 0.041 | 0.041 mg/l |
| 28 Jan 2025, 08:31 | 0.046 | 0.046 mg/l |
| 9 Dec 2024, 10:59 | 0.045 | 0.045 mg/l |
| 6 Nov 2024, 07:59 | 0.099 | 0.099 mg/l |
| 7 Oct 2024, 08:32 | 0.12 | 0.12 mg/l |
| 5 Sep 2024, 09:39 | 0.26 | 0.26 mg/l |
| 6 Aug 2024, 13:32 | 0.21 | 0.21 mg/l |
| 15 Jul 2024, 09:18 | 0.21 | 0.21 mg/l |
| 7 Jun 2024, 13:41 | 0.23 | 0.23 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
472 µS/cm
Sampled 6 Mar 2026, 7 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Mar 2026, 11:29 | 472 | 472 µS/cm |
| 18 Feb 2026, 09:01 | 454 | 454 µS/cm |
| 22 Jan 2026, 15:36 | 463 | 463 µS/cm |
| 16 Dec 2025, 08:56 | 599 | 599 µS/cm |
| 27 Nov 2025, 08:53 | 640 | 640 µS/cm |
| 7 Oct 2025, 13:57 | 730 | 730 µS/cm |
| 2 Sep 2025, 12:45 | 297 | 297 µS/cm |
| 4 Aug 2025, 11:35 | 842 | 842 µS/cm |
| 2 Jul 2025, 08:26 | 826 | 826 µS/cm |
| 5 Jun 2025, 12:18 | 711 | 711 µS/cm |
| 9 May 2025, 08:39 | 677 | 677 µS/cm |
| 23 Apr 2025, 08:25 | 465 | 465 µS/cm |
| 10 Mar 2025, 08:29 | 544 | 544 µS/cm |
| 18 Feb 2025, 08:53 | 545 | 545 µS/cm |
| 28 Jan 2025, 08:31 | 449 | 449 µS/cm |
| 9 Dec 2024, 10:59 | 538 | 538 µS/cm |
| 6 Nov 2024, 07:59 | 583 | 583 µS/cm |
| 7 Oct 2024, 08:32 | 589 | 589 µS/cm |
| 5 Sep 2024, 09:39 | 566 | 566 µS/cm |
| 6 Aug 2024, 13:32 | 524 | 524 µS/cm |
| 15 Jul 2024, 09:18 | 620 | 620 µS/cm |
| 7 Jun 2024, 13:41 | 552 | 552 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 | 22 | Jun 2024 – Mar 2026 | 94.7% 6 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Jun 2024 – Mar 2026 | 10.8 mg/l 6 Mar 2026 |
| Temperature of Water 0076 | River water | 22 | Jun 2024 – Mar 2026 | 9.6 °C 6 Mar 2026 |
| pH 0061 | River water | 22 | Jun 2024 – Mar 2026 | 7.79 6 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Jun 2024 – Mar 2026 | 0.087 mg/l 6 Mar 2026 |
| Nitrate as N 0117 | River water | 22 | Jun 2024 – Mar 2026 | 1.39 mg/l 6 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Jun 2024 – Mar 2026 | 0.045 mg/l 6 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Jun 2024 – Mar 2026 | 472 µS/cm 6 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 22 | Jun 2024 – Mar 2026 | 140 mg/l 6 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Jun 2024 – Mar 2026 | 0.00096 mg/l 6 Mar 2026 |
| Nitrite as N 0118 | River water | 22 | Jun 2024 – Mar 2026 | 0.014 mg/l 6 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 22 | Jun 2024 – Mar 2026 | 1.4 mg/l 6 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.