Seymour Drain upstream of Rampton sewage treatment works
EA name: SEYMOUR DRAIN UPSTREAM OF RAMPTON STW (also listed as “SEYMOUR DRAIN UPSTREAM OF RAMPTON SEWAGE TREATMENT WORKS”)
Environment Agency sampling point MD-40634750 · 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
- 15 May 2026, 09:335 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 18 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 479980, 377627As published, to the nearest 1 m. Open in a map
- River, by its own name
- Seymour Drain
- River, by the map
- An unnamed streamOn a small stream traced into the river its name gives, 4 m from the line.
- Next gauge downstream
- Gainsborough On the River Trent · 16 km along the river (the path rests on a repair to the map)
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
93.1%
Sampled 15 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 May 2026, 09:33 | 93.1 | 93.1% |
| 15 Apr 2026, 08:59 | 90.2 | 90.2% |
| 3 Mar 2026, 12:12 | 102.7 | 102.7% |
| 17 Feb 2026, 11:06 | 96.3 | 96.3% |
| 12 Jan 2026, 14:05 | 98.2 | 98.2% |
| 15 Dec 2025, 08:35 | 92.3 | 92.3% |
| 13 Nov 2025, 12:19 | 82.8 | 82.8% |
| 31 Oct 2025, 08:35 | 63.6 | 63.6% |
| 30 Sep 2025, 09:15 | 62.1 | 62.1% |
| 16 Jul 2025, 10:50 | 75.8 | 75.8% |
| 13 Jun 2025, 10:01 | 77.7 | 77.7% |
| 14 May 2025, 10:48 | 104.3 | 104.3% |
| 28 Apr 2025, 08:32 | 100.4 | 100.4% |
| 7 Mar 2025, 08:52 | 97.4 | 97.4% |
| 11 Feb 2025, 11:44 | 96.4 | 96.4% |
| 20 Jan 2025, 08:49 | 93.9 | 93.9% |
| 5 Dec 2024, 09:25 | 91.5 | 91.5% |
| 22 Nov 2024, 09:05 | 97.1 | 97.1% |
| 14 Oct 2024, 08:27 | 92.7 | 92.7% |
| 20 Sep 2024, 09:12 | 85.1 | 85.1% |
| 29 Aug 2024, 10:40 | 94 | 94% |
| 16 Jul 2024, 11:04 | 72.2 | 72.2% |
| 18 Jun 2024, 10:28 | 95.3 | 95.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.7 mg/l
Sampled 15 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 May 2026, 09:33 | 10.7 | 10.7 mg/l |
| 15 Apr 2026, 08:59 | 9.81 | 9.81 mg/l |
| 3 Mar 2026, 12:12 | 11.8 | 11.8 mg/l |
| 17 Feb 2026, 11:06 | 12.5 | 12.5 mg/l |
| 12 Jan 2026, 14:05 | 11.8 | 11.8 mg/l |
| 15 Dec 2025, 08:35 | 10.6 | 10.6 mg/l |
| 13 Nov 2025, 12:19 | 9.01 | 9.01 mg/l |
| 31 Oct 2025, 08:35 | 7.17 | 7.17 mg/l |
| 30 Sep 2025, 09:15 | 7 | 7 mg/l |
| 16 Jul 2025, 10:50 | 7.43 | 7.43 mg/l |
| 13 Jun 2025, 10:01 | 7.68 | 7.68 mg/l |
| 14 May 2025, 10:48 | 10.9 | 10.9 mg/l |
| 28 Apr 2025, 08:32 | 11.2 | 11.2 mg/l |
| 7 Mar 2025, 08:52 | 11.7 | 11.7 mg/l |
| 11 Feb 2025, 11:44 | 12.2 | 12.2 mg/l |
| 20 Jan 2025, 08:49 | 12.2 | 12.2 mg/l |
| 5 Dec 2024, 09:25 | 10.6 | 10.6 mg/l |
| 22 Nov 2024, 09:05 | 13.4 | 13.4 mg/l |
| 14 Oct 2024, 08:27 | 10.9 | 10.9 mg/l |
| 20 Sep 2024, 09:12 | 8.75 | 8.75 mg/l |
| 29 Aug 2024, 10:40 | 9.43 | 9.43 mg/l |
| 16 Jul 2024, 11:04 | 7.14 | 7.14 mg/l |
| 18 Jun 2024, 10:28 | 9.86 | 9.86 mg/l |
Water temperature
code 0076 · °C
9.1 °C
Sampled 15 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 May 2026, 09:33 | 9.1 | 9.1 °C |
| 15 Apr 2026, 08:59 | 11.5 | 11.5 °C |
| 3 Mar 2026, 12:12 | 9.3 | 9.3 °C |
| 17 Feb 2026, 11:06 | 4.3 | 4.3 °C |
| 12 Jan 2026, 14:05 | 7.2 | 7.2 °C |
| 15 Dec 2025, 08:35 | 9.3 | 9.3 °C |
| 13 Nov 2025, 12:19 | 11.5 | 11.5 °C |
| 31 Oct 2025, 08:35 | 10 | 10 °C |
| 30 Sep 2025, 09:15 | 10 | 10 °C |
| 16 Jul 2025, 10:50 | 16.2 | 16.2 °C |
| 13 Jun 2025, 10:01 | 15.8 | 15.8 °C |
| 14 May 2025, 10:48 | 13.1 | 13.1 °C |
| 28 Apr 2025, 08:32 | 10.5 | 10.5 °C |
| 7 Mar 2025, 08:52 | 7.5 | 7.5 °C |
| 11 Feb 2025, 11:44 | 5.2 | 5.2 °C |
| 20 Jan 2025, 08:49 | 4.4 | 4.4 °C |
| 5 Dec 2024, 09:25 | 9 | 9 °C |
| 22 Nov 2024, 09:05 | 2 | 2 °C |
| 14 Oct 2024, 08:27 | 8.4 | 8.4 °C |
| 20 Sep 2024, 09:12 | 14 | 14 °C |
| 29 Aug 2024, 10:40 | 15.1 | 15.1 °C |
| 16 Jul 2024, 11:04 | 15.8 | 15.8 °C |
| 18 Jun 2024, 10:28 | 13.7 | 13.7 °C |
pH
code 0061
7.94
Sampled 15 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 May 2026, 09:33 | 7.94 | 7.94 |
| 15 Apr 2026, 08:59 | 7.84 | 7.84 |
| 3 Mar 2026, 12:12 | 7.96 | 7.96 |
| 17 Feb 2026, 11:06 | 8.12 | 8.12 |
| 12 Jan 2026, 14:05 | 7.88 | 7.88 |
| 15 Dec 2025, 08:35 | 7.86 | 7.86 |
| 13 Nov 2025, 12:19 | 7.9 | 7.9 |
| 31 Oct 2025, 08:35 | 7.73 | 7.73 |
| 30 Sep 2025, 09:15 | 7.9 | 7.9 |
| 16 Jul 2025, 10:50 | 7.71 | 7.71 |
| 13 Jun 2025, 10:01 | 7.67 | 7.67 |
| 14 May 2025, 10:48 | 7.92 | 7.92 |
| 28 Apr 2025, 08:32 | 8 | 8 |
| 7 Mar 2025, 08:52 | 8.06 | 8.06 |
| 11 Feb 2025, 11:44 | 8.06 | 8.06 |
| 20 Jan 2025, 08:49 | 7.95 | 7.95 |
| 5 Dec 2024, 09:25 | 7.87 | 7.87 |
| 22 Nov 2024, 09:05 | 8.06 | 8.06 |
| 14 Oct 2024, 08:27 | 8.14 | 8.14 |
| 20 Sep 2024, 09:12 | 8.08 | 8.08 |
| 29 Aug 2024, 10:40 | 8.06 | 8.06 |
| 16 Jul 2024, 11:04 | 7.67 | 7.67 |
| 18 Jun 2024, 10:28 | 7.98 | 7.98 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.13 mg/l
Sampled 15 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 May 2026, 09:33 | 0.13 | 0.13 mg/l |
| 15 Apr 2026, 08:59 | 0.24 | 0.24 mg/l |
| 3 Mar 2026, 12:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Feb 2026, 11:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Jan 2026, 14:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Dec 2025, 08:35 | 0.04 | 0.04 mg/l |
| 13 Nov 2025, 12:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 31 Oct 2025, 08:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 30 Sep 2025, 09:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Jul 2025, 10:50 | 0.056 | 0.056 mg/l |
| 13 Jun 2025, 10:01 | 0.037 | 0.037 mg/l |
| 14 May 2025, 10:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Apr 2025, 08:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Mar 2025, 08:52 | 0.035 | 0.035 mg/l |
| 11 Feb 2025, 11:44 | 0.13 | 0.13 mg/l |
| 20 Jan 2025, 08:49 | 0.04 | 0.04 mg/l |
| 5 Dec 2024, 09:25 | 0.067 | 0.067 mg/l |
| 22 Nov 2024, 09:05 | 0.15 | 0.15 mg/l |
| 14 Oct 2024, 08:27 | 0.061 | 0.061 mg/l |
| 20 Sep 2024, 09:12 | 0.059 | 0.059 mg/l |
| 29 Aug 2024, 10:40 | 0.083 | 0.083 mg/l |
| 16 Jul 2024, 11:04 | 0.27 | 0.27 mg/l |
| 18 Jun 2024, 10:28 | 0.031 | 0.031 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.26 mg/l
Sampled 15 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 May 2026, 09:33 | 3.26 | 3.26 mg/l |
| 15 Apr 2026, 08:59 | 5.33 | 5.33 mg/l |
| 3 Mar 2026, 12:12 | 7.29 | 7.29 mg/l |
| 17 Feb 2026, 11:06 | 6.9 | 6.9 mg/l |
| 12 Jan 2026, 14:05 | 9.29 | 9.29 mg/l |
| 15 Dec 2025, 08:35 | 11 | 11 mg/l |
| 13 Nov 2025, 12:19 | 16.9 | 16.9 mg/l |
| 31 Oct 2025, 08:35 | 1.89 | 1.89 mg/l |
| 30 Sep 2025, 09:15 | 2.35 | 2.35 mg/l |
| 16 Jul 2025, 10:50 | 0.562 | 0.562 mg/l |
| 13 Jun 2025, 10:01 | 0.576 | 0.576 mg/l |
| 14 May 2025, 10:48 | 3.08 | 3.08 mg/l |
| 28 Apr 2025, 08:32 | 4.27 | 4.27 mg/l |
| 7 Mar 2025, 08:52 | 9.38 | 9.38 mg/l |
| 11 Feb 2025, 11:44 | 9.08 | 9.08 mg/l |
| 20 Jan 2025, 08:49 | 11 | 11 mg/l |
| 5 Dec 2024, 09:25 | 11 | 11 mg/l |
| 22 Nov 2024, 09:05 | 8.17 | 8.17 mg/l |
| 14 Oct 2024, 08:27 | 13.9 | 13.9 mg/l |
| 20 Sep 2024, 09:12 | 2.05 | 2.05 mg/l |
| 29 Aug 2024, 10:40 | 1.54 | 1.54 mg/l |
| 16 Jul 2024, 11:04 | 5.24 | 5.24 mg/l |
| 18 Jun 2024, 10:28 | 7.06 | 7.06 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.061 mg/l
Sampled 15 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 May 2026, 09:33 | 0.061 | 0.061 mg/l |
| 15 Apr 2026, 08:59 | 0.065 | 0.065 mg/l |
| 3 Mar 2026, 12:12 | 0.11 | 0.11 mg/l |
| 17 Feb 2026, 11:06 | 0.11 | 0.11 mg/l |
| 12 Jan 2026, 14:05 | 0.12 | 0.12 mg/l |
| 15 Dec 2025, 08:35 | 0.093 | 0.093 mg/l |
| 13 Nov 2025, 12:19 | 0.18 | 0.18 mg/l |
| 31 Oct 2025, 08:35 | 0.11 | 0.11 mg/l |
| 30 Sep 2025, 09:15 | 0.14 | 0.14 mg/l |
| 16 Jul 2025, 10:50 | 0.27 | 0.27 mg/l |
| 13 Jun 2025, 10:01 | 0.06 | 0.06 mg/l |
| 14 May 2025, 10:48 | 0.021 | 0.021 mg/l |
| 28 Apr 2025, 08:32 | 0.022 | 0.022 mg/l |
| 7 Mar 2025, 08:52 | 0.044 | 0.044 mg/l |
| 11 Feb 2025, 11:44 | 0.12 | 0.12 mg/l |
| 20 Jan 2025, 08:49 | 0.069 | 0.069 mg/l |
| 5 Dec 2024, 09:25 | 0.11 | 0.11 mg/l |
| 22 Nov 2024, 09:05 | 0.15 | 0.15 mg/l |
| 14 Oct 2024, 08:27 | 0.12 | 0.12 mg/l |
| 20 Sep 2024, 09:12 | 0.16 | 0.16 mg/l |
| 29 Aug 2024, 10:40 | 0.16 | 0.16 mg/l |
| 16 Jul 2024, 11:04 | 0.4 | 0.4 mg/l |
| 18 Jun 2024, 10:28 | 0.14 | 0.14 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1390 µS/cm
Sampled 15 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 May 2026, 09:33 | 1390 | 1390 µS/cm |
| 15 Apr 2026, 08:59 | 1523 | 1523 µS/cm |
| 3 Mar 2026, 12:12 | 1171 | 1171 µS/cm |
| 17 Feb 2026, 11:06 | 1046 | 1046 µS/cm |
| 12 Jan 2026, 14:05 | 1108 | 1108 µS/cm |
| 15 Dec 2025, 08:35 | 1385 | 1385 µS/cm |
| 13 Nov 2025, 12:19 | 1091 | 1091 µS/cm |
| 31 Oct 2025, 08:35 | 1385 | 1385 µS/cm |
| 30 Sep 2025, 09:15 | 1522 | 1522 µS/cm |
| 16 Jul 2025, 10:50 | 1047 | 1047 µS/cm |
| 13 Jun 2025, 10:01 | 1990 | 1990 µS/cm |
| 14 May 2025, 10:48 | 1894 | 1894 µS/cm |
| 28 Apr 2025, 08:32 | 1842 | 1842 µS/cm |
| 7 Mar 2025, 08:52 | 1690 | 1690 µS/cm |
| 11 Feb 2025, 11:44 | 1353 | 1353 µS/cm |
| 20 Jan 2025, 08:49 | 1558 | 1558 µS/cm |
| 5 Dec 2024, 09:25 | 646 | 646 µS/cm |
| 22 Nov 2024, 09:05 | 1777 | 1777 µS/cm |
| 14 Oct 2024, 08:27 | 1322 | 1322 µS/cm |
| 20 Sep 2024, 09:12 | 1782 | 1782 µS/cm |
| 29 Aug 2024, 10:40 | 1940 | 1940 µS/cm |
| 16 Jul 2024, 11:04 | 658 | 658 µS/cm |
| 18 Jun 2024, 10:28 | 1638 | 1638 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 | 23 | Jun 2024 – May 2026 | 93.1% 15 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Jun 2024 – May 2026 | 10.7 mg/l 15 May 2026 |
| Temperature of Water 0076 | River water | 23 | Jun 2024 – May 2026 | 9.1 °C 15 May 2026 |
| pH 0061 | River water | 23 | Jun 2024 – May 2026 | 7.94 15 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Jun 2024 – May 2026 | 0.13 mg/l 15 May 2026 |
| Nitrate as N 0117 | River water | 23 | Jun 2024 – May 2026 | 3.26 mg/l 15 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Jun 2024 – May 2026 | 0.061 mg/l 15 May 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Jun 2024 – May 2026 | 1390 µS/cm 15 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Jun 2024 – May 2026 | 230 mg/l 15 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 23 | Jun 2024 – May 2026 | 0.00194 mg/l 15 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 22 | Jun 2024 – May 2026 | below 3 mg/l 15 May 2026 |
| Nitrite as N 0118 | River water | 23 | Jun 2024 – May 2026 | 0.041 mg/l 15 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Jun 2024 – May 2026 | 3.3 mg/l 15 May 2026 |
| No flow /No sample 7668 | River water | 1 | Aug 2025 – Aug 2025 | No flow/discharge at sampling point 29 Aug 2025 |
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.