South Holland Main Drain B1165 Road Bridge (Top)
EA name: SOUTH HOLLAND MAIN DRN.B1165 RD.BR.(TOP)
Environment Agency sampling point AN-SHMD060C · 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
- 14 Sep 2026, 10:0717 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 23 since 12 Jun 2024 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 538012, 318954As published, to the nearest 1 m. Open in a map
- River, by its own name
- South Holland Main
- River, by the map
- South Holland Main DrainPlaced on a river whose name partly matches its own, 0 m from the line.
- Next gauge downstream
- None tracedThe map stops before any gauge.
- Why it was sampled
- Environmental monitoring statutory (EU directives) (23 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
68.4%
Sampled 14 Sep 2026, 17 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Sep 2026, 10:07 | 68.4 | 68.4% |
| 6 Aug 2026, 14:19 | 85.2 | 85.2% |
| 10 Jul 2026, 11:46 | 88.6 | 88.6% |
| 9 Jun 2026, 09:52 | 78 | 78% |
| 6 May 2026, 12:02 | 86.2 | 86.2% |
| 22 Apr 2026, 09:11 | 92.3 | 92.3% |
| 18 Mar 2026, 09:42 | 108.2 | 108.2% |
| 23 Feb 2026, 10:33 | 96.9 | 96.9% |
| 13 Jan 2026, 09:13 | 88.3 | 88.3% |
| 3 Dec 2025, 10:58 | 83.6 | 83.6% |
| 11 Nov 2025, 10:08 | 63.5 | 63.5% |
| 10 Oct 2025, 13:49 | 93.7 | 93.7% |
| 1 Apr 2025, 10:28 | 128.6 | 128.6% |
| 12 Mar 2025, 08:38 | 106.2 | 106.2% |
| 10 Feb 2025, 14:14 | 99.1 | 99.1% |
| 13 Jan 2025, 08:58 | 82.6 | 82.6% |
| 9 Dec 2024, 10:24 | 87.8 | 87.8% |
| 5 Nov 2024, 11:39 | 88.9 | 88.9% |
| 9 Oct 2024, 13:40 | 76.5 | 76.5% |
| 3 Sep 2024, 12:28 | 80.3 | 80.3% |
| 16 Aug 2024, 10:02 | 57.8 | 57.8% |
| 10 Jul 2024, 11:34 | 67 | 67% |
| 12 Jun 2024, 13:55 | 84.7 | 84.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.41 mg/l
Sampled 14 Sep 2026, 17 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Sep 2026, 10:07 | 6.41 | 6.41 mg/l |
| 6 Aug 2026, 14:19 | 7.74 | 7.74 mg/l |
| 10 Jul 2026, 11:46 | 7.21 | 7.21 mg/l |
| 9 Jun 2026, 09:52 | 7.68 | 7.68 mg/l |
| 6 May 2026, 12:02 | 8.65 | 8.65 mg/l |
| 22 Apr 2026, 09:11 | 9.75 | 9.75 mg/l |
| 18 Mar 2026, 09:42 | 12 | 12 mg/l |
| 23 Feb 2026, 10:33 | 11.2 | 11.2 mg/l |
| 13 Jan 2026, 09:13 | 11.1 | 11.1 mg/l |
| 3 Dec 2025, 10:58 | 10.2 | 10.2 mg/l |
| 11 Nov 2025, 10:08 | 7.02 | 7.02 mg/l |
| 10 Oct 2025, 13:49 | 9.74 | 9.74 mg/l |
| 1 Apr 2025, 10:28 | 14 | 14 mg/l |
| 12 Mar 2025, 08:38 | 12.6 | 12.6 mg/l |
| 10 Feb 2025, 14:14 | 12.8 | 12.8 mg/l |
| 13 Jan 2025, 08:58 | 11.8 | 11.8 mg/l |
| 9 Dec 2024, 10:24 | 10.6 | 10.6 mg/l |
| 5 Nov 2024, 11:39 | 9.65 | 9.65 mg/l |
| 9 Oct 2024, 13:40 | 7.83 | 7.83 mg/l |
| 3 Sep 2024, 12:28 | 7.42 | 7.42 mg/l |
| 16 Aug 2024, 10:02 | 5.17 | 5.17 mg/l |
| 10 Jul 2024, 11:34 | 6.24 | 6.24 mg/l |
| 12 Jun 2024, 13:55 | 8.3 | 8.3 mg/l |
Water temperature
code 0076 · °C
18.4 °C
Sampled 14 Sep 2026, 17 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Sep 2026, 10:07 | 18.4 | 18.4 °C |
| 6 Aug 2026, 14:19 | 19.9 | 19.9 °C |
| 10 Jul 2026, 11:46 | 25.7 | 25.7 °C |
| 9 Jun 2026, 09:52 | 16 | 16 °C |
| 6 May 2026, 12:02 | 15.1 | 15.1 °C |
| 22 Apr 2026, 09:11 | 12.8 | 12.8 °C |
| 18 Mar 2026, 09:42 | 10.6 | 10.6 °C |
| 23 Feb 2026, 10:33 | 8.9 | 8.9 °C |
| 13 Jan 2026, 09:13 | 5.5 | 5.5 °C |
| 3 Dec 2025, 10:58 | 6.6 | 6.6 °C |
| 11 Nov 2025, 10:08 | 10.8 | 10.8 °C |
| 10 Oct 2025, 13:49 | 13.5 | 13.5 °C |
| 1 Apr 2025, 10:28 | 11.5 | 11.5 °C |
| 12 Mar 2025, 08:38 | 7.8 | 7.8 °C |
| 10 Feb 2025, 14:14 | 4.4 | 4.4 °C |
| 13 Jan 2025, 08:58 | 0.7 | 0.7 °C |
| 9 Dec 2024, 10:24 | 7.1 | 7.1 °C |
| 5 Nov 2024, 11:39 | 11.6 | 11.6 °C |
| 9 Oct 2024, 13:40 | 14.2 | 14.2 °C |
| 3 Sep 2024, 12:28 | 19.1 | 19.1 °C |
| 16 Aug 2024, 10:02 | 20.7 | 20.7 °C |
| 10 Jul 2024, 11:34 | 18.7 | 18.7 °C |
| 12 Jun 2024, 13:55 | 16.2 | 16.2 °C |
pH
code 0061
8.33
Sampled 14 Sep 2026, 17 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Sep 2026, 10:07 | 8.33 | 8.33 |
| 6 Aug 2026, 14:19 | 8.03 | 8.03 |
| 10 Jul 2026, 11:46 | 8.26 | 8.26 |
| 9 Jun 2026, 09:52 | 8.27 | 8.27 |
| 6 May 2026, 12:02 | 8.3 | 8.3 |
| 22 Apr 2026, 09:11 | 8.49 | 8.49 |
| 18 Mar 2026, 09:42 | 8.13 | 8.13 |
| 23 Feb 2026, 10:33 | 8.14 | 8.14 |
| 13 Jan 2026, 09:13 | 7.97 | 7.97 |
| 3 Dec 2025, 10:58 | 8.31 | 8.31 |
| 11 Nov 2025, 10:08 | 8.09 | 8.09 |
| 10 Oct 2025, 13:49 | 7.92 | 7.92 |
| 1 Apr 2025, 10:28 | 8.38 | 8.38 |
| 12 Mar 2025, 08:38 | 8.18 | 8.18 |
| 10 Feb 2025, 14:14 | 8.4 | 8.4 |
| 13 Jan 2025, 08:58 | 7.75 | 7.75 |
| 9 Dec 2024, 10:24 | 7.73 | 7.73 |
| 5 Nov 2024, 11:39 | 7.94 | 7.94 |
| 9 Oct 2024, 13:40 | 7.83 | 7.83 |
| 3 Sep 2024, 12:28 | 7.98 | 7.98 |
| 16 Aug 2024, 10:02 | 7.91 | 7.91 |
| 10 Jul 2024, 11:34 | 8.04 | 8.04 |
| 12 Jun 2024, 13:55 | 8.1 | 8.1 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.32 mg/l
Sampled 14 Sep 2026, 17 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Sep 2026, 10:07 | 0.32 | 0.32 mg/l |
| 6 Aug 2026, 14:19 | 0.36 | 0.36 mg/l |
| 10 Jul 2026, 11:46 | 0.34 | 0.34 mg/l |
| 9 Jun 2026, 09:52 | 0.09 | 0.09 mg/l |
| 6 May 2026, 12:02 | 0.056 | 0.056 mg/l |
| 22 Apr 2026, 09:11 | 0.033 | 0.033 mg/l |
| 18 Mar 2026, 09:42 | 0.068 | 0.068 mg/l |
| 23 Feb 2026, 10:33 | 0.11 | 0.11 mg/l |
| 13 Jan 2026, 09:13 | 0.16 | 0.16 mg/l |
| 3 Dec 2025, 10:58 | 0.19 | 0.19 mg/l |
| 11 Nov 2025, 10:08 | 0.28 | 0.28 mg/l |
| 10 Oct 2025, 13:49 | 0.24 | 0.24 mg/l |
| 12 Mar 2025, 08:38 | 0.081 | 0.081 mg/l |
| 10 Feb 2025, 14:14 | 0.2 | 0.2 mg/l |
| 13 Jan 2025, 08:58 | 0.52 | 0.52 mg/l |
| 9 Dec 2024, 10:24 | 0.2 | 0.2 mg/l |
| 5 Nov 2024, 11:39 | 0.07 | 0.07 mg/l |
| 9 Oct 2024, 13:40 | 0.099 | 0.099 mg/l |
| 3 Sep 2024, 12:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Aug 2024, 10:02 | 0.046 | 0.046 mg/l |
| 10 Jul 2024, 11:34 | 0.043 | 0.043 mg/l |
| 12 Jun 2024, 13:55 | <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 14 Sep 2026, 17 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Sep 2026, 10:07 | <0.196 | below 0.196 mg/l (not detected above this) |
| 6 Aug 2026, 14:19 | <0.196 | below 0.196 mg/l (not detected above this) |
| 10 Jul 2026, 11:46 | <0.196 | below 0.196 mg/l (not detected above this) |
| 9 Jun 2026, 09:52 | <0.196 | below 0.196 mg/l (not detected above this) |
| 6 May 2026, 12:02 | 0.194 | 0.194 mg/l |
| 22 Apr 2026, 09:11 | <0.196 | below 0.196 mg/l (not detected above this) |
| 18 Mar 2026, 09:42 | 2.77 | 2.77 mg/l |
| 23 Feb 2026, 10:33 | 4.36 | 4.36 mg/l |
| 13 Jan 2026, 09:13 | 5.47 | 5.47 mg/l |
| 3 Dec 2025, 10:58 | 5.83 | 5.83 mg/l |
| 11 Nov 2025, 10:08 | 0.186 | 0.186 mg/l |
| 10 Oct 2025, 13:49 | <0.196 | below 0.196 mg/l (not detected above this) |
| 12 Mar 2025, 08:38 | 1.39 | 1.39 mg/l |
| 10 Feb 2025, 14:14 | 2.58 | 2.58 mg/l |
| 13 Jan 2025, 08:58 | 4.37 | 4.37 mg/l |
| 9 Dec 2024, 10:24 | 6.07 | 6.07 mg/l |
| 5 Nov 2024, 11:39 | 0.87 | 0.87 mg/l |
| 9 Oct 2024, 13:40 | 3.99 | 3.99 mg/l |
| 3 Sep 2024, 12:28 | <0.196 | below 0.196 mg/l (not detected above this) |
| 16 Aug 2024, 10:02 | <0.196 | below 0.196 mg/l (not detected above this) |
| 10 Jul 2024, 11:34 | <0.196 | below 0.196 mg/l (not detected above this) |
| 12 Jun 2024, 13:55 | <0.196 | below 0.196 mg/l (not detected above this) |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.44 mg/l
Sampled 14 Sep 2026, 17 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Sep 2026, 10:07 | 0.44 | 0.44 mg/l |
| 6 Aug 2026, 14:19 | 0.26 | 0.26 mg/l |
| 10 Jul 2026, 11:46 | 0.15 | 0.15 mg/l |
| 9 Jun 2026, 09:52 | 0.046 | 0.046 mg/l |
| 6 May 2026, 12:02 | 0.056 | 0.056 mg/l |
| 22 Apr 2026, 09:11 | 0.032 | 0.032 mg/l |
| 18 Mar 2026, 09:42 | 0.045 | 0.045 mg/l |
| 23 Feb 2026, 10:33 | 0.049 | 0.049 mg/l |
| 13 Jan 2026, 09:13 | 0.066 | 0.066 mg/l |
| 3 Dec 2025, 10:58 | 0.15 | 0.15 mg/l |
| 11 Nov 2025, 10:08 | 0.09 | 0.09 mg/l |
| 10 Oct 2025, 13:49 | 0.043 | 0.043 mg/l |
| 12 Mar 2025, 08:38 | 0.026 | 0.026 mg/l |
| 10 Feb 2025, 14:14 | 0.067 | 0.067 mg/l |
| 13 Jan 2025, 08:58 | 0.062 | 0.062 mg/l |
| 9 Dec 2024, 10:24 | 0.066 | 0.066 mg/l |
| 5 Nov 2024, 11:39 | 0.033 | 0.033 mg/l |
| 9 Oct 2024, 13:40 | 0.096 | 0.096 mg/l |
| 3 Sep 2024, 12:28 | 0.023 | 0.023 mg/l |
| 16 Aug 2024, 10:02 | 0.058 | 0.058 mg/l |
| 10 Jul 2024, 11:34 | 0.024 | 0.024 mg/l |
| 12 Jun 2024, 13:55 | 0.011 | 0.011 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
23435 µS/cm
Sampled 14 Sep 2026, 17 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Sep 2026, 10:07 | 23435 | 23435 µS/cm |
| 6 Aug 2026, 14:19 | 22584 | 22584 µS/cm |
| 10 Jul 2026, 11:46 | 17623 | 17623 µS/cm |
| 9 Jun 2026, 09:52 | 11238 | 11238 µS/cm |
| 6 May 2026, 12:02 | 6372 | 6372 µS/cm |
| 22 Apr 2026, 09:11 | 6314 | 6314 µS/cm |
| 18 Mar 2026, 09:42 | 3712 | 3712 µS/cm |
| 23 Feb 2026, 10:33 | 3372 | 3372 µS/cm |
| 13 Jan 2026, 09:13 | 3091 | 3091 µS/cm |
| 3 Dec 2025, 10:58 | 2406 | 2406 µS/cm |
| 11 Nov 2025, 10:08 | 13962 | 13962 µS/cm |
| 10 Oct 2025, 13:49 | 14934 | 14934 µS/cm |
| 1 Apr 2025, 10:28 | 4577 | 4577 µS/cm |
| 12 Mar 2025, 08:38 | 4549 | 4549 µS/cm |
| 10 Feb 2025, 14:14 | 4123 | 4123 µS/cm |
| 13 Jan 2025, 08:58 | 3652 | 3652 µS/cm |
| 9 Dec 2024, 10:24 | 2147 | 2147 µS/cm |
| 5 Nov 2024, 11:39 | 3649 | 3649 µS/cm |
| 9 Oct 2024, 13:40 | 2467 | 2467 µS/cm |
| 3 Sep 2024, 12:28 | 8355 | 8355 µS/cm |
| 16 Aug 2024, 10:02 | 6844 | 6844 µS/cm |
| 10 Jul 2024, 11:34 | 7145 | 7145 µS/cm |
| 12 Jun 2024, 13:55 | 4277 | 4277 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 | 23 | Jun 2024 – Sep 2026 | 68.4% 14 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Jun 2024 – Sep 2026 | 6.41 mg/l 14 Sep 2026 |
| Temperature of Water 0076 | River water | 23 | Jun 2024 – Sep 2026 | 18.4 °C 14 Sep 2026 |
| pH 0061 | River water | 23 | Jun 2024 – Sep 2026 | 8.33 14 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Jun 2024 – Sep 2026 | 0.32 mg/l 14 Sep 2026 |
| Nitrate as N 0117 | River water | 22 | Jun 2024 – Sep 2026 | below 0.196 mg/l 14 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 22 | Jun 2024 – Sep 2026 | 0.44 mg/l 14 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Jun 2024 – Sep 2026 | 23435 µS/cm 14 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 22 | Jun 2024 – Sep 2026 | 300 mg/l 14 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Jun 2024 – Sep 2026 | 0.0108 mg/l 14 Sep 2026 |
| Nitrite as N 0118 | River water | 22 | Jun 2024 – Sep 2026 | below 0.004 mg/l 14 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 22 | Jun 2024 – Sep 2026 | below 0.2 mg/l 14 Sep 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.