Four Towns Drain
EA name: FOUR TOWNS DRAIN
Environment Agency sampling point AN-FOURTOWN · 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
- 13 Mar 2026, 13:297 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
- 28 since 23 Oct 2023 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 528099, 337358As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- Not placedNo mapped watercourse within 500 m. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (28 samples)
3 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
154.8%
Sampled 13 Mar 2026, 7 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 13:29 | 154.8 | 154.8% |
| 4 Mar 2026, 11:05 | 100.1 | 100.1% |
| 17 Feb 2026, 11:06 | 76.5 | 76.5% |
| 2 Feb 2026, 14:01 | 96.4 | 96.4% |
| 20 Jan 2026, 11:43 | 92.9 | 92.9% |
| 8 Jan 2026, 10:20 | 62.7 | 62.7% |
| 16 Dec 2025, 12:21 | 81.3 | 81.3% |
| 8 Dec 2025, 13:48 | 116.2 | 116.2% |
| 20 Nov 2025, 12:36 | 91.8 | 91.8% |
| 4 Nov 2025, 13:12 | 99.4 | 99.4% |
| 7 Mar 2025, 11:57 | 141.5 | 141.5% |
| 17 Feb 2025, 13:12 | 139.9 | 139.9% |
| 27 Jan 2025, 12:03 | 111.1 | 111.1% |
| 5 Dec 2024, 12:11 | 98.2 | 98.2% |
| 20 Nov 2024, 13:12 | 99.2 | 99.2% |
| 23 Oct 2024, 14:22 | 215.7 | 215.7% |
| 17 Jun 2024, 12:43 | 68.6 | 68.6% |
| 17 May 2024, 13:20 | 94.1 | 94.1% |
| 16 Apr 2024, 12:50 | 140.4 | 140.4% |
| 18 Mar 2024, 13:07 | 195.4 | 195.4% |
| 20 Feb 2024, 13:07 | 90.8 | 90.8% |
| 15 Jan 2024, 13:10 | 101.1 | 101.1% |
| 5 Dec 2023, 13:03 | 66.3 | 66.3% |
| 20 Nov 2023, 13:18 | 117.4 | 117.4% |
| 23 Oct 2023, 13:22 | 37.3 | 37.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
17.7 mg/l
Sampled 13 Mar 2026, 7 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 13:29 | 17.7 | 17.7 mg/l |
| 4 Mar 2026, 11:05 | 11.7 | 11.7 mg/l |
| 17 Feb 2026, 11:06 | 9.81 | 9.81 mg/l |
| 2 Feb 2026, 14:01 | 11.7 | 11.7 mg/l |
| 20 Jan 2026, 11:43 | 11.1 | 11.1 mg/l |
| 8 Jan 2026, 10:20 | 9.04 | 9.04 mg/l |
| 16 Dec 2025, 12:21 | 9.43 | 9.43 mg/l |
| 8 Dec 2025, 13:48 | 13.5 | 13.5 mg/l |
| 20 Nov 2025, 12:36 | 12.4 | 12.4 mg/l |
| 4 Nov 2025, 13:12 | 10.5 | 10.5 mg/l |
| 7 Mar 2025, 11:57 | 16 | 16 mg/l |
| 17 Feb 2025, 13:12 | 17.8 | 17.8 mg/l |
| 27 Jan 2025, 12:03 | 14.2 | 14.2 mg/l |
| 5 Dec 2024, 12:11 | 11.3 | 11.3 mg/l |
| 20 Nov 2024, 13:12 | 13.3 | 13.3 mg/l |
| 23 Oct 2024, 14:22 | 22.5 | 22.5 mg/l |
| 17 Jun 2024, 12:43 | 7.07 | 7.07 mg/l |
| 17 May 2024, 13:20 | 9.36 | 9.36 mg/l |
| 16 Apr 2024, 12:50 | 15.9 | 15.9 mg/l |
| 18 Mar 2024, 13:07 | 21.1 | 21.1 mg/l |
| 20 Feb 2024, 13:07 | 10.4 | 10.4 mg/l |
| 15 Jan 2024, 13:10 | 13.9 | 13.9 mg/l |
| 5 Dec 2023, 13:03 | 7.96 | 7.96 mg/l |
| 20 Nov 2023, 13:18 | 13.3 | 13.3 mg/l |
| 23 Oct 2023, 13:22 | 4.02 | 4.02 mg/l |
Water temperature
code 0076 · °C
9.4 °C
Sampled 13 Mar 2026, 7 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 13:29 | 9.4 | 9.4 °C |
| 4 Mar 2026, 11:05 | 8.4 | 8.4 °C |
| 17 Feb 2026, 11:06 | 4.8 | 4.8 °C |
| 2 Feb 2026, 14:01 | 7.1 | 7.1 °C |
| 20 Jan 2026, 11:43 | 7.4 | 7.4 °C |
| 8 Jan 2026, 10:20 | 0.4 | 0.4 °C |
| 16 Dec 2025, 12:21 | 8.8 | 8.8 °C |
| 8 Dec 2025, 13:48 | 8.7 | 8.7 °C |
| 20 Nov 2025, 12:36 | 2.8 | 2.8 °C |
| 4 Nov 2025, 13:12 | 12.9 | 12.9 °C |
| 7 Mar 2025, 11:57 | 9.9 | 9.9 °C |
| 17 Feb 2025, 13:12 | 5.1 | 5.1 °C |
| 27 Jan 2025, 12:03 | 5 | 5 °C |
| 5 Dec 2024, 12:11 | 9.3 | 9.3 °C |
| 20 Nov 2024, 13:12 | 3 | 3 °C |
| 23 Oct 2024, 14:22 | 13.3 | 13.3 °C |
| 17 Jun 2024, 12:43 | 13.9 | 13.9 °C |
| 17 May 2024, 13:20 | 15.5 | 15.5 °C |
| 16 Apr 2024, 12:50 | 9.9 | 9.9 °C |
| 18 Mar 2024, 13:07 | 11.8 | 11.8 °C |
| 20 Feb 2024, 13:07 | 9.4 | 9.4 °C |
| 15 Jan 2024, 13:10 | 2.1 | 2.1 °C |
| 5 Dec 2023, 13:03 | 7.4 | 7.4 °C |
| 20 Nov 2023, 13:18 | 9.9 | 9.9 °C |
| 23 Oct 2023, 13:22 | 11.9 | 11.9 °C |
pH
code 0061
8.28
Sampled 13 Mar 2026, 7 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 13:29 | 8.28 | 8.28 |
| 4 Mar 2026, 11:05 | 7.71 | 7.71 |
| 17 Feb 2026, 11:06 | 7.6 | 7.6 |
| 2 Feb 2026, 14:01 | 7.8 | 7.8 |
| 20 Jan 2026, 11:43 | 7.8 | 7.8 |
| 8 Jan 2026, 10:20 | 8.28 | 8.28 |
| 16 Dec 2025, 12:21 | 7.85 | 7.85 |
| 8 Dec 2025, 13:48 | 8.11 | 8.11 |
| 20 Nov 2025, 12:36 | 7.97 | 7.97 |
| 4 Nov 2025, 13:12 | 8.23 | 8.23 |
| 7 Mar 2025, 11:57 | 7.96 | 7.96 |
| 17 Feb 2025, 13:12 | 8.04 | 8.04 |
| 27 Jan 2025, 12:03 | 8.03 | 8.03 |
| 5 Dec 2024, 12:11 | 7.87 | 7.87 |
| 20 Nov 2024, 13:12 | 7.96 | 7.96 |
| 23 Oct 2024, 14:22 | 8.45 | 8.45 |
| 17 Jun 2024, 12:43 | 7.78 | 7.78 |
| 17 May 2024, 13:20 | 7.8 | 7.8 |
| 16 Apr 2024, 12:50 | 8.16 | 8.16 |
| 18 Mar 2024, 13:07 | 8.03 | 8.03 |
| 20 Feb 2024, 13:07 | 7.53 | 7.53 |
| 15 Jan 2024, 13:10 | 7.88 | 7.88 |
| 5 Dec 2023, 13:03 | 7.41 | 7.41 |
| 20 Nov 2023, 13:18 | 7.84 | 7.84 |
| 23 Oct 2023, 13:22 | 7.27 | 7.27 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.038 mg/l
Sampled 13 Mar 2026, 7 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 13:29 | 0.038 | 0.038 mg/l |
| 4 Mar 2026, 11:05 | 0.032 | 0.032 mg/l |
| 17 Feb 2026, 11:06 | 0.085 | 0.085 mg/l |
| 2 Feb 2026, 14:01 | 0.071 | 0.071 mg/l |
| 20 Jan 2026, 11:43 | 0.082 | 0.082 mg/l |
| 8 Jan 2026, 10:20 | 3.4 | 3.4 mg/l |
| 16 Dec 2025, 12:21 | 0.12 | 0.12 mg/l |
| 8 Dec 2025, 13:48 | 0.28 | 0.28 mg/l |
| 20 Nov 2025, 12:36 | 0.046 | 0.046 mg/l |
| 4 Nov 2025, 13:12 | 0.14 | 0.14 mg/l |
| 7 Mar 2025, 11:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Feb 2025, 13:12 | 0.045 | 0.045 mg/l |
| 27 Jan 2025, 12:03 | 0.11 | 0.11 mg/l |
| 20 Nov 2024, 13:12 | 0.16 | 0.16 mg/l |
| 23 Oct 2024, 14:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2024, 12:43 | 0.072 | 0.072 mg/l |
| 17 May 2024, 13:20 | 0.35 | 0.35 mg/l |
| 16 Apr 2024, 12:50 | 0.04 | 0.04 mg/l |
| 18 Mar 2024, 13:07 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Feb 2024, 13:07 | 0.058 | 0.058 mg/l |
| 15 Jan 2024, 13:10 | 0.13 | 0.13 mg/l |
| 5 Dec 2023, 13:03 | 0.076 | 0.076 mg/l |
| 20 Nov 2023, 13:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Oct 2023, 13:22 | 0.063 | 0.063 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.17 mg/l
Sampled 13 Mar 2026, 7 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 13:29 | 4.17 | 4.17 mg/l |
| 4 Mar 2026, 11:05 | 6.69 | 6.69 mg/l |
| 17 Feb 2026, 11:06 | 8.89 | 8.89 mg/l |
| 2 Feb 2026, 14:01 | 7.38 | 7.38 mg/l |
| 20 Jan 2026, 11:43 | 8.27 | 8.27 mg/l |
| 8 Jan 2026, 10:20 | 2.26 | 2.26 mg/l |
| 16 Dec 2025, 12:21 | 3.93 | 3.93 mg/l |
| 8 Dec 2025, 13:48 | 7.96 | 7.96 mg/l |
| 20 Nov 2025, 12:36 | 2.67 | 2.67 mg/l |
| 4 Nov 2025, 13:12 | 0.335 | 0.335 mg/l |
| 7 Mar 2025, 11:57 | 2.18 | 2.18 mg/l |
| 17 Feb 2025, 13:12 | 3.29 | 3.29 mg/l |
| 27 Jan 2025, 12:03 | 3.98 | 3.98 mg/l |
| 20 Nov 2024, 13:12 | 4.67 | 4.67 mg/l |
| 23 Oct 2024, 14:22 | 1.47 | 1.47 mg/l |
| 17 Jun 2024, 12:43 | 0.411 | 0.411 mg/l |
| 17 May 2024, 13:20 | 5.38 | 5.38 mg/l |
| 16 Apr 2024, 12:50 | 1.77 | 1.77 mg/l |
| 18 Mar 2024, 13:07 | 4.08 | 4.08 mg/l |
| 20 Feb 2024, 13:07 | 6.08 | 6.08 mg/l |
| 15 Jan 2024, 13:10 | 4.68 | 4.68 mg/l |
| 5 Dec 2023, 13:03 | 7.78 | 7.78 mg/l |
| 20 Nov 2023, 13:18 | 6.77 | 6.77 mg/l |
| 23 Oct 2023, 13:22 | 12.9 | 12.9 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.087 mg/l
Sampled 13 Mar 2026, 7 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 13:29 | 0.087 | 0.087 mg/l |
| 4 Mar 2026, 11:05 | 0.074 | 0.074 mg/l |
| 17 Feb 2026, 11:06 | 0.11 | 0.11 mg/l |
| 2 Feb 2026, 14:01 | 0.11 | 0.11 mg/l |
| 20 Jan 2026, 11:43 | 0.38 | 0.38 mg/l |
| 8 Jan 2026, 10:20 | 0.42 | 0.42 mg/l |
| 16 Dec 2025, 12:21 | 0.19 | 0.19 mg/l |
| 8 Dec 2025, 13:48 | 0.32 | 0.32 mg/l |
| 20 Nov 2025, 12:36 | 0.43 | 0.43 mg/l |
| 4 Nov 2025, 13:12 | 0.11 | 0.11 mg/l |
| 7 Mar 2025, 11:57 | 0.048 | 0.048 mg/l |
| 17 Feb 2025, 13:12 | 0.07 | 0.07 mg/l |
| 27 Jan 2025, 12:03 | 0.1 | 0.1 mg/l |
| 20 Nov 2024, 13:12 | 0.18 | 0.18 mg/l |
| 23 Oct 2024, 14:22 | 0.077 | 0.077 mg/l |
| 17 Jun 2024, 12:43 | 0.16 | 0.16 mg/l |
| 17 May 2024, 13:20 | 0.16 | 0.16 mg/l |
| 16 Apr 2024, 12:50 | 0.05 | 0.05 mg/l |
| 18 Mar 2024, 13:07 | 0.053 | 0.053 mg/l |
| 20 Feb 2024, 13:07 | 0.12 | 0.12 mg/l |
| 15 Jan 2024, 13:10 | 0.091 | 0.091 mg/l |
| 5 Dec 2023, 13:03 | 0.18 | 0.18 mg/l |
| 20 Nov 2023, 13:18 | 0.087 | 0.087 mg/l |
| 23 Oct 2023, 13:22 | 0.37 | 0.37 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
2148 µS/cm
Sampled 13 Mar 2026, 7 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 13 Mar 2026, 13:29 | 2148 | 2148 µS/cm |
| 4 Mar 2026, 11:05 | 2014 | 2014 µS/cm |
| 17 Feb 2026, 11:06 | 1833 | 1833 µS/cm |
| 2 Feb 2026, 14:01 | 2132 | 2132 µS/cm |
| 20 Jan 2026, 11:43 | 2096 | 2096 µS/cm |
| 8 Jan 2026, 10:20 | 2614 | 2614 µS/cm |
| 16 Dec 2025, 12:21 | 1932 | 1932 µS/cm |
| 8 Dec 2025, 13:48 | 1744 | 1744 µS/cm |
| 20 Nov 2025, 12:36 | 1115 | 1115 µS/cm |
| 4 Nov 2025, 13:12 | 928 | 928 µS/cm |
| 7 Mar 2025, 11:57 | 2288 | 2288 µS/cm |
| 17 Feb 2025, 13:12 | 2230 | 2230 µS/cm |
| 27 Jan 2025, 12:03 | 2075 | 2075 µS/cm |
| 5 Dec 2024, 12:11 | 2090 | 2090 µS/cm |
| 20 Nov 2024, 13:12 | 2058 | 2058 µS/cm |
| 23 Oct 2024, 14:22 | 2080 | 2080 µS/cm |
| 17 Jun 2024, 12:43 | 2228 | 2228 µS/cm |
| 17 May 2024, 13:20 | 1655 | 1655 µS/cm |
| 16 Apr 2024, 12:50 | 2311 | 2311 µS/cm |
| 18 Mar 2024, 13:07 | 1956 | 1956 µS/cm |
| 20 Feb 2024, 13:07 | 1677 | 1677 µS/cm |
| 15 Jan 2024, 13:10 | 2322 | 2322 µS/cm |
| 5 Dec 2023, 13:03 | 1600 | 1600 µS/cm |
| 20 Nov 2023, 13:18 | 2147 | 2147 µS/cm |
| 23 Oct 2023, 13:22 | 949 | 949 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 | 25 | Oct 2023 – Mar 2026 | 154.8% 13 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 25 | Oct 2023 – Mar 2026 | 17.7 mg/l 13 Mar 2026 |
| Temperature of Water 0076 | River water | 25 | Oct 2023 – Mar 2026 | 9.4 °C 13 Mar 2026 |
| pH 0061 | River water | 25 | Oct 2023 – Mar 2026 | 8.28 13 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 24 | Oct 2023 – Mar 2026 | 0.038 mg/l 13 Mar 2026 |
| Nitrate as N 0117 | River water | 24 | Oct 2023 – Mar 2026 | 4.17 mg/l 13 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 24 | Oct 2023 – Mar 2026 | 0.087 mg/l 13 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 25 | Oct 2023 – Mar 2026 | 2148 µS/cm 13 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Oct 2023 – Mar 2026 | 440 mg/l 13 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Oct 2023 – Mar 2026 | 0.00066 mg/l 13 Mar 2026 |
| BOD : 5 Day ATU 0085 | River water | 19 | Feb 2024 – Mar 2026 | below 4 mg/l 13 Mar 2026 |
| Nitrite as N 0118 | River water | 24 | Oct 2023 – Mar 2026 | 0.026 mg/l 13 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 24 | Oct 2023 – Mar 2026 | 4.2 mg/l 13 Mar 2026 |
| No flow /No sample 7668 | River water | 3 | Jul 2024 – Sep 2024 | No flow/discharge at sampling point 19 Sep 2024 |
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.