Westmoor Main Drain Safegates Bridge
EA name: WESTMOOR MAIN DRAIN SAFEGATES BR
Environment Agency sampling point SW-E2020100 · 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
- 5 Aug 2026, 11:1657 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 13 since 13 May 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 341884, 123214As published, to the nearest 1 m. Open in a map
- River, by its own name
- Westmoor Main Drain
- River, by the map
- Westmoor Main DrainPlaced on the river its name gives, 3 m from the line.
- Next gauge downstream
- Westover Pumping Station On the Huish Level Rhyne · 4.9 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (13 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
61.6%
Sampled 5 Aug 2026, 57 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 11:16 | 61.6 | 61.6% |
| 1 Jul 2026, 12:17 | 42.5 | 42.5% |
| 15 Jun 2026, 10:17 | 122.1 | 122.1% |
| 8 May 2026, 10:18 | 91.3 | 91.3% |
| 1 Apr 2026, 13:36 | 98.4 | 98.4% |
| 19 Jan 2026, 08:59 | 68.3 | 68.3% |
| 8 Jan 2026, 14:06 | 63 | 63% |
| 5 Dec 2025, 12:32 | 70.1 | 70.1% |
| 10 Nov 2025, 09:20 | 61.4 | 61.4% |
| 20 Aug 2025, 12:30 | 71.6 | 71.6% |
| 5 Aug 2025, 11:43 | 63 | 63% |
| 25 Jul 2025, 12:09 | 101.4 | 101.4% |
| 13 May 2025, 14:20 | 131.7 | 131.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
5.44 mg/l
Sampled 5 Aug 2026, 57 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 11:16 | 5.44 | 5.44 mg/l |
| 1 Jul 2026, 12:17 | 3.72 | 3.72 mg/l |
| 15 Jun 2026, 10:17 | 11.4 | 11.4 mg/l |
| 8 May 2026, 10:18 | 9.03 | 9.03 mg/l |
| 1 Apr 2026, 13:36 | 10.6 | 10.6 mg/l |
| 19 Jan 2026, 08:59 | 8.34 | 8.34 mg/l |
| 8 Jan 2026, 14:06 | 8.27 | 8.27 mg/l |
| 5 Dec 2025, 12:32 | 8.61 | 8.61 mg/l |
| 10 Nov 2025, 09:20 | 6.62 | 6.62 mg/l |
| 20 Aug 2025, 12:30 | 6.6 | 6.6 mg/l |
| 5 Aug 2025, 11:43 | 5.94 | 5.94 mg/l |
| 25 Jul 2025, 12:09 | 8.85 | 8.85 mg/l |
| 13 May 2025, 14:20 | 12.4 | 12.4 mg/l |
Water temperature
code 0076 · °C
21.4 °C
Sampled 5 Aug 2026, 57 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 11:16 | 21.4 | 21.4 °C |
| 1 Jul 2026, 12:17 | 21.8 | 21.8 °C |
| 15 Jun 2026, 10:17 | 18.4 | 18.4 °C |
| 8 May 2026, 10:18 | 15.8 | 15.8 °C |
| 1 Apr 2026, 13:36 | 12.1 | 12.1 °C |
| 19 Jan 2026, 08:59 | 6.7 | 6.7 °C |
| 8 Jan 2026, 14:06 | 3.9 | 3.9 °C |
| 5 Dec 2025, 12:32 | 6.5 | 6.5 °C |
| 10 Nov 2025, 09:20 | 11.9 | 11.9 °C |
| 20 Aug 2025, 12:30 | 19.2 | 19.2 °C |
| 5 Aug 2025, 11:43 | 18.1 | 18.1 °C |
| 25 Jul 2025, 12:09 | 22 | 22 °C |
| 13 May 2025, 14:20 | 18.1 | 18.1 °C |
pH
code 0061
7.43
Sampled 5 Aug 2026, 57 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 11:16 | 7.43 | 7.43 |
| 1 Jul 2026, 12:17 | 7.39 | 7.39 |
| 15 Jun 2026, 10:17 | 7.7 | 7.7 |
| 8 May 2026, 10:18 | 7.68 | 7.68 |
| 1 Apr 2026, 13:36 | 7.83 | 7.83 |
| 19 Jan 2026, 08:59 | 7.21 | 7.21 |
| 8 Jan 2026, 14:06 | 7.08 | 7.08 |
| 5 Dec 2025, 12:32 | 7.3 | 7.3 |
| 10 Nov 2025, 09:20 | 7.53 | 7.53 |
| 20 Aug 2025, 12:30 | 7.67 | 7.67 |
| 5 Aug 2025, 11:43 | 7.61 | 7.61 |
| 25 Jul 2025, 12:09 | 7.71 | 7.71 |
| 13 May 2025, 14:20 | 8.24 | 8.24 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 1 Jul 2026, 3 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Jul 2026, 12:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jun 2026, 10:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 May 2026, 10:18 | 0.064 | 0.064 mg/l |
| 1 Apr 2026, 13:36 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jan 2026, 08:59 | 0.088 | 0.088 mg/l |
| 8 Jan 2026, 14:06 | 0.31 | 0.31 mg/l |
| 5 Dec 2025, 12:32 | 0.065 | 0.065 mg/l |
| 10 Nov 2025, 09:20 | 0.11 | 0.11 mg/l |
| 20 Aug 2025, 12:30 | 0.053 | 0.053 mg/l |
| 5 Aug 2025, 11:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jul 2025, 12:09 | 0.033 | 0.033 mg/l |
| 13 May 2025, 14:20 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
below 0.196 mg/l (not detected above this)
Sampled 5 Aug 2026, 57 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 11:16 | <0.196 | below 0.196 mg/l (not detected above this) |
| 1 Jul 2026, 12:17 | <0.196 | below 0.196 mg/l (not detected above this) |
| 15 Jun 2026, 10:17 | 0.317 | 0.317 mg/l |
| 8 May 2026, 10:18 | 1.76 | 1.76 mg/l |
| 1 Apr 2026, 13:36 | 1.48 | 1.48 mg/l |
| 19 Jan 2026, 08:59 | 4.48 | 4.48 mg/l |
| 8 Jan 2026, 14:06 | 1.78 | 1.78 mg/l |
| 5 Dec 2025, 12:32 | 6.45 | 6.45 mg/l |
| 10 Nov 2025, 09:20 | 2.34 | 2.34 mg/l |
| 20 Aug 2025, 12:30 | 0.247 | 0.247 mg/l |
| 5 Aug 2025, 11:43 | 6.07 | 6.07 mg/l |
| 25 Jul 2025, 12:09 | 0.755 | 0.755 mg/l |
| 13 May 2025, 14:20 | 1.36 | 1.36 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.17 mg/l
Sampled 1 Jul 2026, 3 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Jul 2026, 12:17 | 0.17 | 0.17 mg/l |
| 15 Jun 2026, 10:17 | 0.024 | 0.024 mg/l |
| 8 May 2026, 10:18 | 0.033 | 0.033 mg/l |
| 1 Apr 2026, 13:36 | 0.024 | 0.024 mg/l |
| 19 Jan 2026, 08:59 | 0.094 | 0.094 mg/l |
| 8 Jan 2026, 14:06 | 0.071 | 0.071 mg/l |
| 5 Dec 2025, 12:32 | 0.13 | 0.13 mg/l |
| 10 Nov 2025, 09:20 | 0.057 | 0.057 mg/l |
| 20 Aug 2025, 12:30 | 0.056 | 0.056 mg/l |
| 5 Aug 2025, 11:43 | 0.16 | 0.16 mg/l |
| 25 Jul 2025, 12:09 | 0.057 | 0.057 mg/l |
| 13 May 2025, 14:20 | 0.016 | 0.016 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
564 µS/cm
Sampled 5 Aug 2026, 57 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Aug 2026, 11:16 | 564 | 564 µS/cm |
| 1 Jul 2026, 12:17 | 516 | 516 µS/cm |
| 15 Jun 2026, 10:17 | 518 | 518 µS/cm |
| 8 May 2026, 10:18 | 624 | 624 µS/cm |
| 1 Apr 2026, 13:36 | 706 | 706 µS/cm |
| 19 Jan 2026, 08:59 | 481 | 481 µS/cm |
| 8 Jan 2026, 14:06 | 733 | 733 µS/cm |
| 5 Dec 2025, 12:32 | 515 | 515 µS/cm |
| 10 Nov 2025, 09:20 | 615 | 615 µS/cm |
| 20 Aug 2025, 12:30 | 597 | 597 µS/cm |
| 5 Aug 2025, 11:43 | 612 | 612 µS/cm |
| 25 Jul 2025, 12:09 | 598 | 598 µS/cm |
| 13 May 2025, 14:20 | 554 | 554 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 | 13 | May 2025 – Aug 2026 | 61.6% 5 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 13 | May 2025 – Aug 2026 | 5.44 mg/l 5 Aug 2026 |
| Temperature of Water 0076 | River water | 13 | May 2025 – Aug 2026 | 21.4 °C 5 Aug 2026 |
| pH 0061 | River water | 13 | May 2025 – Aug 2026 | 7.43 5 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 12 | May 2025 – Jul 2026 | below 0.03 mg/l 1 Jul 2026 |
| Nitrate as N 0117 | River water | 13 | May 2025 – Aug 2026 | below 0.196 mg/l 5 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 12 | May 2025 – Jul 2026 | 0.17 mg/l 1 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 13 | May 2025 – Aug 2026 | 564 µS/cm 5 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 13 | May 2025 – Aug 2026 | 220 mg/l 5 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 12 | May 2025 – Jul 2026 | below 0.00033 mg/l 1 Jul 2026 |
| Nitrite as N 0118 | River water | 13 | May 2025 – Aug 2026 | below 0.004 mg/l 5 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 13 | May 2025 – Aug 2026 | below 0.2 mg/l 5 Aug 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.