River Winster at Slate Hill
EA name: RIVER WINSTER AT SLATE HILL
Environment Agency sampling point NW-88004467 · 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
- 8 May 2026, 11:435 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
- 24 since 21 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 342257, 483768As published, to the nearest 1 m. Open in a map
- River, by its own name
- Winster
- River, by the map
- River WinsterPlaced on the river its name gives, 6 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Why it was sampled
- Monitoring (national agency policy) (12 samples)
Environmental monitoring statutory (EU directives) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
102.4%
Sampled 8 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 11:43 | 102.4 | 102.4% |
| 10 Apr 2026, 11:52 | 97.6 | 97.6% |
| 9 Mar 2026, 13:59 | 95 | 95% |
| 10 Feb 2026, 14:43 | 96.4 | 96.4% |
| 20 Jan 2026, 10:33 | 94.2 | 94.2% |
| 12 Dec 2025, 14:50 | 91 | 91% |
| 5 Nov 2025, 11:38 | 75.2 | 75.2% |
| 9 Oct 2025, 13:30 | 93.8 | 93.8% |
| 12 Sep 2025, 12:31 | 86.1 | 86.1% |
| 21 Aug 2025, 12:50 | 104.6 | 104.6% |
| 23 Jul 2025, 13:01 | 100.7 | 100.7% |
| 24 Jun 2025, 14:27 | 103.2 | 103.2% |
| 19 May 2025, 09:51 | 109 | 109% |
| 2 Apr 2025, 11:38 | 106.3 | 106.3% |
| 4 Mar 2025, 13:32 | 96.8 | 96.8% |
| 13 Feb 2025, 09:18 | 89.7 | 89.7% |
| 29 Jan 2025, 14:05 | 95.2 | 95.2% |
| 16 Dec 2024, 12:23 | 90.9 | 90.9% |
| 26 Nov 2024, 14:20 | 86 | 86% |
| 15 Oct 2024, 13:52 | 93.3 | 93.3% |
| 30 Sep 2024, 14:47 | 94 | 94% |
| 23 Aug 2024, 13:40 | 92.8 | 92.8% |
| 29 Jul 2024, 08:34 | 82.9 | 82.9% |
| 21 Jun 2024, 09:37 | 90 | 90% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.9 mg/l
Sampled 8 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 11:43 | 10.9 | 10.9 mg/l |
| 10 Apr 2026, 11:52 | 11.5 | 11.5 mg/l |
| 9 Mar 2026, 13:59 | 11 | 11 mg/l |
| 10 Feb 2026, 14:43 | 11.6 | 11.6 mg/l |
| 20 Jan 2026, 10:33 | 11.5 | 11.5 mg/l |
| 12 Dec 2025, 14:50 | 10.5 | 10.5 mg/l |
| 5 Nov 2025, 11:38 | 7.96 | 7.96 mg/l |
| 9 Oct 2025, 13:30 | 9.84 | 9.84 mg/l |
| 12 Sep 2025, 12:31 | 9.05 | 9.05 mg/l |
| 21 Aug 2025, 12:50 | 10.3 | 10.3 mg/l |
| 23 Jul 2025, 13:01 | 9.83 | 9.83 mg/l |
| 24 Jun 2025, 14:27 | 10.2 | 10.2 mg/l |
| 19 May 2025, 09:51 | 10.9 | 10.9 mg/l |
| 2 Apr 2025, 11:38 | 11.9 | 11.9 mg/l |
| 4 Mar 2025, 13:32 | 11.4 | 11.4 mg/l |
| 13 Feb 2025, 09:18 | 11.4 | 11.4 mg/l |
| 29 Jan 2025, 14:05 | 12 | 12 mg/l |
| 16 Dec 2024, 12:23 | 10.4 | 10.4 mg/l |
| 26 Nov 2024, 14:20 | 10.5 | 10.5 mg/l |
| 15 Oct 2024, 13:52 | 10.5 | 10.5 mg/l |
| 30 Sep 2024, 14:47 | 10.3 | 10.3 mg/l |
| 23 Aug 2024, 13:40 | 9.23 | 9.23 mg/l |
| 29 Jul 2024, 08:34 | 8.3 | 8.3 mg/l |
| 21 Jun 2024, 09:37 | 9.07 | 9.07 mg/l |
Water temperature
code 0076 · °C
12.3 °C
Sampled 8 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 11:43 | 12.3 | 12.3 °C |
| 10 Apr 2026, 11:52 | 8.3 | 8.3 °C |
| 9 Mar 2026, 13:59 | 8.9 | 8.9 °C |
| 10 Feb 2026, 14:43 | 7.4 | 7.4 °C |
| 20 Jan 2026, 10:33 | 6.7 | 6.7 °C |
| 12 Dec 2025, 14:50 | 8.9 | 8.9 °C |
| 5 Nov 2025, 11:38 | 12.7 | 12.7 °C |
| 9 Oct 2025, 13:30 | 13.1 | 13.1 °C |
| 12 Sep 2025, 12:31 | 13 | 13 °C |
| 21 Aug 2025, 12:50 | 15.9 | 15.9 °C |
| 23 Jul 2025, 13:01 | 16.4 | 16.4 °C |
| 24 Jun 2025, 14:27 | 15.7 | 15.7 °C |
| 19 May 2025, 09:51 | 15.3 | 15.3 °C |
| 2 Apr 2025, 11:38 | 10.3 | 10.3 °C |
| 4 Mar 2025, 13:32 | 8 | 8 °C |
| 13 Feb 2025, 09:18 | 5.1 | 5.1 °C |
| 29 Jan 2025, 14:05 | 5.5 | 5.5 °C |
| 16 Dec 2024, 12:23 | 9.4 | 9.4 °C |
| 26 Nov 2024, 14:20 | 6.8 | 6.8 °C |
| 15 Oct 2024, 13:52 | 10.1 | 10.1 °C |
| 30 Sep 2024, 14:47 | 11.2 | 11.2 °C |
| 23 Aug 2024, 13:40 | 15.5 | 15.5 °C |
| 29 Jul 2024, 08:34 | 15.2 | 15.2 °C |
| 21 Jun 2024, 09:37 | 14.9 | 14.9 °C |
pH
code 0061
7.38
Sampled 8 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 11:43 | 7.38 | 7.38 |
| 10 Apr 2026, 11:52 | 7.32 | 7.32 |
| 9 Mar 2026, 13:59 | 7.14 | 7.14 |
| 10 Feb 2026, 14:43 | 7.2 | 7.2 |
| 20 Jan 2026, 10:33 | 7.1 | 7.1 |
| 12 Dec 2025, 14:50 | 6.9 | 6.9 |
| 5 Nov 2025, 11:38 | 6.84 | 6.84 |
| 9 Oct 2025, 13:30 | 6.95 | 6.95 |
| 12 Sep 2025, 12:31 | 7.03 | 7.03 |
| 21 Aug 2025, 12:50 | 8.39 | 8.39 |
| 23 Jul 2025, 13:01 | 7.8 | 7.8 |
| 24 Jun 2025, 14:27 | 7.36 | 7.36 |
| 19 May 2025, 09:51 | 7.83 | 7.83 |
| 2 Apr 2025, 11:38 | 7.5 | 7.5 |
| 4 Mar 2025, 13:32 | 7.22 | 7.22 |
| 13 Feb 2025, 09:18 | 7.47 | 7.47 |
| 29 Jan 2025, 14:05 | 7.09 | 7.09 |
| 16 Dec 2024, 12:23 | 7.53 | 7.53 |
| 26 Nov 2024, 14:20 | 6.93 | 6.93 |
| 15 Oct 2024, 13:52 | 7.18 | 7.18 |
| 30 Sep 2024, 14:47 | 7.21 | 7.21 |
| 23 Aug 2024, 13:40 | 7.45 | 7.45 |
| 29 Jul 2024, 08:34 | 7.1 | 7.1 |
| 21 Jun 2024, 09:37 | 7.5 | 7.5 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.045 mg/l
Sampled 8 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 11:43 | 0.045 | 0.045 mg/l |
| 10 Apr 2026, 11:52 | 0.023 | 0.023 mg/l |
| 9 Mar 2026, 13:59 | 0.036 | 0.036 mg/l |
| 10 Feb 2026, 14:43 | 0.016 | 0.016 mg/l |
| 20 Jan 2026, 10:33 | 0.024 | 0.024 mg/l |
| 12 Dec 2025, 14:50 | 0.018 | 0.018 mg/l |
| 5 Nov 2025, 11:38 | 0.013 | 0.013 mg/l |
| 9 Oct 2025, 13:30 | 0.017 | 0.017 mg/l |
| 12 Sep 2025, 12:31 | 0.0084 | 0.0084 mg/l |
| 21 Aug 2025, 12:50 | 0.011 | 0.011 mg/l |
| 23 Jul 2025, 13:01 | 0.0089 | 0.0089 mg/l |
| 24 Jun 2025, 14:27 | 0.021 | 0.021 mg/l |
| 19 May 2025, 09:51 | 0.0082 | 0.0082 mg/l |
| 2 Apr 2025, 11:38 | 0.019 | 0.019 mg/l |
| 4 Mar 2025, 13:32 | 0.017 | 0.017 mg/l |
| 13 Feb 2025, 09:18 | 0.028 | 0.028 mg/l |
| 29 Jan 2025, 14:05 | 0.012 | 0.012 mg/l |
| 16 Dec 2024, 12:23 | 0.039 | 0.039 mg/l |
| 26 Nov 2024, 14:20 | 0.035 | 0.035 mg/l |
| 15 Oct 2024, 13:52 | 0.015 | 0.015 mg/l |
| 30 Sep 2024, 14:47 | 0.022 | 0.022 mg/l |
| 23 Aug 2024, 13:40 | 0.0074 | 0.0074 mg/l |
| 29 Jul 2024, 08:34 | 0.014 | 0.014 mg/l |
| 21 Jun 2024, 09:37 | 0.026 | 0.026 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.557 mg/l
Sampled 8 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 11:43 | 0.557 | 0.557 mg/l |
| 10 Apr 2026, 11:52 | 0.808 | 0.808 mg/l |
| 9 Mar 2026, 13:59 | 0.918 | 0.918 mg/l |
| 10 Feb 2026, 14:43 | 0.918 | 0.918 mg/l |
| 20 Jan 2026, 10:33 | 0.878 | 0.878 mg/l |
| 12 Dec 2025, 14:50 | 0.897 | 0.897 mg/l |
| 5 Nov 2025, 11:38 | 0.557 | 0.557 mg/l |
| 9 Oct 2025, 13:30 | 0.688 | 0.688 mg/l |
| 12 Sep 2025, 12:31 | 0.587 | 0.587 mg/l |
| 21 Aug 2025, 12:50 | 0.667 | 0.667 mg/l |
| 23 Jul 2025, 13:01 | 0.647 | 0.647 mg/l |
| 24 Jun 2025, 14:27 | 0.716 | 0.716 mg/l |
| 19 May 2025, 09:51 | 0.34 | 0.34 mg/l |
| 2 Apr 2025, 11:38 | 0.638 | 0.638 mg/l |
| 4 Mar 2025, 13:32 | 0.998 | 0.998 mg/l |
| 13 Feb 2025, 09:18 | 1.1 | 1.1 mg/l |
| 29 Jan 2025, 14:05 | 1.1 | 1.1 mg/l |
| 16 Dec 2024, 12:23 | 0.866 | 0.866 mg/l |
| 26 Nov 2024, 14:20 | 0.965 | 0.965 mg/l |
| 15 Oct 2024, 13:52 | 0.607 | 0.607 mg/l |
| 30 Sep 2024, 14:47 | 0.517 | 0.517 mg/l |
| 23 Aug 2024, 13:40 | 0.308 | 0.308 mg/l |
| 29 Jul 2024, 08:34 | 0.525 | 0.525 mg/l |
| 21 Jun 2024, 09:37 | 0.512 | 0.512 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.005 mg/l
Sampled 8 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 11:43 | 0.005 | 0.005 mg/l |
| 10 Apr 2026, 11:52 | 0.0081 | 0.0081 mg/l |
| 9 Mar 2026, 13:59 | 0.01 | 0.01 mg/l |
| 10 Feb 2026, 14:43 | 0.01 | 0.01 mg/l |
| 20 Jan 2026, 10:33 | 0.012 | 0.012 mg/l |
| 12 Dec 2025, 14:50 | 0.013 | 0.013 mg/l |
| 5 Nov 2025, 11:38 | 0.025 | 0.025 mg/l |
| 9 Oct 2025, 13:30 | 0.014 | 0.014 mg/l |
| 12 Sep 2025, 12:31 | 0.015 | 0.015 mg/l |
| 21 Aug 2025, 12:50 | 0.0047 | 0.0047 mg/l |
| 23 Jul 2025, 13:01 | 0.012 | 0.012 mg/l |
| 24 Jun 2025, 14:27 | 0.013 | 0.013 mg/l |
| 19 May 2025, 09:51 | 0.0083 | 0.0083 mg/l |
| 2 Apr 2025, 11:38 | 0.0051 | 0.0051 mg/l |
| 4 Mar 2025, 13:32 | 0.0072 | 0.0072 mg/l |
| 13 Feb 2025, 09:18 | 0.011 | 0.011 mg/l |
| 29 Jan 2025, 14:05 | 0.0093 | 0.0093 mg/l |
| 16 Dec 2024, 12:23 | 0.012 | 0.012 mg/l |
| 26 Nov 2024, 14:20 | 0.025 | 0.025 mg/l |
| 15 Oct 2024, 13:52 | 0.0065 | 0.0065 mg/l |
| 30 Sep 2024, 14:47 | 0.0098 | 0.0098 mg/l |
| 23 Aug 2024, 13:40 | 0.024 | 0.024 mg/l |
| 29 Jul 2024, 08:34 | 0.018 | 0.018 mg/l |
| 21 Jun 2024, 09:37 | 0.0067 | 0.0067 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
176 µS/cm
Sampled 8 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 May 2026, 11:43 | 176 | 176 µS/cm |
| 10 Apr 2026, 11:52 | 149 | 149 µS/cm |
| 9 Mar 2026, 13:59 | 150 | 150 µS/cm |
| 10 Feb 2026, 14:43 | 140 | 140 µS/cm |
| 20 Jan 2026, 10:33 | 144 | 144 µS/cm |
| 12 Dec 2025, 14:50 | 130 | 130 µS/cm |
| 5 Nov 2025, 11:38 | 111 | 111 µS/cm |
| 9 Oct 2025, 13:30 | 145 | 145 µS/cm |
| 12 Sep 2025, 12:31 | 158 | 158 µS/cm |
| 21 Aug 2025, 12:50 | 251 | 251 µS/cm |
| 23 Jul 2025, 13:01 | 204 | 204 µS/cm |
| 24 Jun 2025, 14:27 | 168 | 168 µS/cm |
| 19 May 2025, 09:51 | 382 | 382 µS/cm |
| 2 Apr 2025, 11:38 | 187 | 187 µS/cm |
| 4 Mar 2025, 13:32 | 161 | 161 µS/cm |
| 13 Feb 2025, 09:18 | 167 | 167 µS/cm |
| 29 Jan 2025, 14:05 | 143 | 143 µS/cm |
| 16 Dec 2024, 12:23 | 163 | 163 µS/cm |
| 26 Nov 2024, 14:20 | 146 | 146 µS/cm |
| 15 Oct 2024, 13:52 | 170 | 170 µS/cm |
| 30 Sep 2024, 14:47 | 154 | 154 µS/cm |
| 23 Aug 2024, 13:40 | 112 | 112 µS/cm |
| 29 Jul 2024, 08:34 | 194 | 194 µS/cm |
| 21 Jun 2024, 09:37 | 156 | 156 µS/cm |
Everything measured here
16 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 16 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 24 | Jun 2024 – May 2026 | 102.4% 8 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 24 | Jun 2024 – May 2026 | 10.9 mg/l 8 May 2026 |
| Temperature of Water 0076 | River water | 24 | Jun 2024 – May 2026 | 12.3 °C 8 May 2026 |
| pH 0061 | River water | 24 | Jun 2024 – May 2026 | 7.38 8 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 24 | Jun 2024 – May 2026 | 0.045 mg/l 8 May 2026 |
| Nitrate as N 0117 | River water | 24 | Jun 2024 – May 2026 | 0.557 mg/l 8 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 24 | Jun 2024 – May 2026 | 0.005 mg/l 8 May 2026 |
| Conductivity at 25 C 0077 | River water | 24 | Jun 2024 – May 2026 | 176 µS/cm 8 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Jun 2024 – May 2026 | 63 mg/l 8 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Jun 2024 – May 2026 | 0.00024 mg/l 8 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 24 | Jun 2024 – May 2026 | 1.4 mg/l 8 May 2026 |
| Mercury 0105 | River water | 11 | May 2025 – Mar 2026 | below 0.01 µg/l 9 Mar 2026 |
| Mercury, Dissolved 0103 | River water | 12 | Apr 2025 – Mar 2026 | below 0.01 µg/l 9 Mar 2026 |
| Nitrite as N 0118 | River water | 24 | Jun 2024 – May 2026 | 0.0032 mg/l 8 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 24 | Jun 2024 – May 2026 | 0.56 mg/l 8 May 2026 |
| Phosphorus, Total as P 0348 | River water | 11 | May 2025 – Mar 2026 | 0.017 mg/l 9 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.