South Holland Main Drain at Shell BRD
EA name: SOUTH HOLLAND MAIN DRAIN AT SHELL BRD (also listed as “RSN0453 SOUTH HOLLAND MAIN DRAIN AT SHELL BRIDGE”)
Environment Agency sampling point AN-RSN0453 · 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
- 6 Aug 2026, 15:3256 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 20 since 8 Jan 2025 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 534209, 316105As published, to the nearest 1 m. Open in a map
- River, by its own name
- South Holland Main Drain
- River, by the map
- South Holland Main DrainPlaced on the river its name gives, 9 m from the line.
- Next gauge downstream
- None tracedThe map stops before any gauge.
- Why it was sampled
- Monitoring (national agency policy) (20 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
109.3%
Sampled 6 Aug 2026, 56 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 15:32 | 109.3 | 109.3% |
| 10 Jul 2026, 13:31 | 126 | 126% |
| 9 Jun 2026, 09:35 | 83.8 | 83.8% |
| 6 May 2026, 12:28 | 100.6 | 100.6% |
| 17 Apr 2026, 10:30 | 143.6 | 143.6% |
| 19 Mar 2026, 11:13 | 121.7 | 121.7% |
| 23 Feb 2026, 10:18 | 98.1 | 98.1% |
| 16 Jan 2026, 11:53 | 74.5 | 74.5% |
| 3 Dec 2025, 11:10 | 85.2 | 85.2% |
| 14 Nov 2025, 09:09 | 92 | 92% |
| 29 Oct 2025, 10:38 | 88.6 | 88.6% |
| 10 Sep 2025, 09:50 | 70.6 | 70.6% |
| 21 Aug 2025, 10:06 | 69.4 | 69.4% |
| 15 Jul 2025, 11:18 | 59.4 | 59.4% |
| 17 Jun 2025, 09:36 | 91.1 | 91.1% |
| 8 May 2025, 12:19 | 80.7 | 80.7% |
| 1 Apr 2025, 10:42 | 101.4 | 101.4% |
| 10 Mar 2025, 11:06 | 112.6 | 112.6% |
| 10 Feb 2025, 10:11 | 98 | 98% |
| 8 Jan 2025, 12:07 | 80.3 | 80.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.81 mg/l
Sampled 6 Aug 2026, 56 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 15:32 | 9.81 | 9.81 mg/l |
| 10 Jul 2026, 13:31 | 9.68 | 9.68 mg/l |
| 9 Jun 2026, 09:35 | 8.07 | 8.07 mg/l |
| 6 May 2026, 12:28 | 9.97 | 9.97 mg/l |
| 17 Apr 2026, 10:30 | 14.7 | 14.7 mg/l |
| 19 Mar 2026, 11:13 | 13.1 | 13.1 mg/l |
| 23 Feb 2026, 10:18 | 11.4 | 11.4 mg/l |
| 16 Jan 2026, 11:53 | 9.24 | 9.24 mg/l |
| 3 Dec 2025, 11:10 | 10.5 | 10.5 mg/l |
| 14 Nov 2025, 09:09 | 9.89 | 9.89 mg/l |
| 29 Oct 2025, 10:38 | 9.82 | 9.82 mg/l |
| 10 Sep 2025, 09:50 | 6.8 | 6.8 mg/l |
| 21 Aug 2025, 10:06 | 6.51 | 6.51 mg/l |
| 15 Jul 2025, 11:18 | 5.19 | 5.19 mg/l |
| 17 Jun 2025, 09:36 | 7.92 | 7.92 mg/l |
| 8 May 2025, 12:19 | 8.17 | 8.17 mg/l |
| 1 Apr 2025, 10:42 | 10.9 | 10.9 mg/l |
| 10 Mar 2025, 11:06 | 12.7 | 12.7 mg/l |
| 10 Feb 2025, 10:11 | 12.6 | 12.6 mg/l |
| 8 Jan 2025, 12:07 | 10.7 | 10.7 mg/l |
Water temperature
code 0076 · °C
20.3 °C
Sampled 6 Aug 2026, 56 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 15:32 | 20.3 | 20.3 °C |
| 10 Jul 2026, 13:31 | 26.9 | 26.9 °C |
| 9 Jun 2026, 09:35 | 16.3 | 16.3 °C |
| 6 May 2026, 12:28 | 15.1 | 15.1 °C |
| 17 Apr 2026, 10:30 | 13.6 | 13.6 °C |
| 19 Mar 2026, 11:13 | 11.7 | 11.7 °C |
| 23 Feb 2026, 10:18 | 8.4 | 8.4 °C |
| 16 Jan 2026, 11:53 | 6 | 6 °C |
| 3 Dec 2025, 11:10 | 6.2 | 6.2 °C |
| 14 Nov 2025, 09:09 | 11.3 | 11.3 °C |
| 29 Oct 2025, 10:38 | 9.5 | 9.5 °C |
| 10 Sep 2025, 09:50 | 16.8 | 16.8 °C |
| 21 Aug 2025, 10:06 | 18.3 | 18.3 °C |
| 15 Jul 2025, 11:18 | 20.8 | 20.8 °C |
| 17 Jun 2025, 09:36 | 21.6 | 21.6 °C |
| 8 May 2025, 12:19 | 14.3 | 14.3 °C |
| 1 Apr 2025, 10:42 | 11.5 | 11.5 °C |
| 10 Mar 2025, 11:06 | 9.5 | 9.5 °C |
| 10 Feb 2025, 10:11 | 4.4 | 4.4 °C |
| 8 Jan 2025, 12:07 | 3.3 | 3.3 °C |
pH
code 0061
8.46
Sampled 6 Aug 2026, 56 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 15:32 | 8.46 | 8.46 |
| 10 Jul 2026, 13:31 | 8.52 | 8.52 |
| 9 Jun 2026, 09:35 | 8.54 | 8.54 |
| 6 May 2026, 12:28 | 8.46 | 8.46 |
| 17 Apr 2026, 10:30 | 8.58 | 8.58 |
| 19 Mar 2026, 11:13 | 8.12 | 8.12 |
| 23 Feb 2026, 10:18 | 8.03 | 8.03 |
| 16 Jan 2026, 11:53 | 7.52 | 7.52 |
| 3 Dec 2025, 11:10 | 8.13 | 8.13 |
| 14 Nov 2025, 09:09 | 8.43 | 8.43 |
| 29 Oct 2025, 10:38 | 8.03 | 8.03 |
| 10 Sep 2025, 09:50 | 7.77 | 7.77 |
| 21 Aug 2025, 10:06 | 7.94 | 7.94 |
| 15 Jul 2025, 11:18 | 8.11 | 8.11 |
| 17 Jun 2025, 09:36 | 8.33 | 8.33 |
| 8 May 2025, 12:19 | 8.04 | 8.04 |
| 1 Apr 2025, 10:42 | 8.28 | 8.28 |
| 10 Mar 2025, 11:06 | 8.01 | 8.01 |
| 10 Feb 2025, 10:11 | 8.29 | 8.29 |
| 8 Jan 2025, 12:07 | 7.52 | 7.52 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.002 mg/l (not detected above this)
Sampled 6 Aug 2026, 56 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 15:32 | <0.002 | below 0.002 mg/l (not detected above this) |
| 10 Jul 2026, 13:31 | 0.0038 | 0.0038 mg/l |
| 9 Jun 2026, 09:35 | <0.002 | below 0.002 mg/l (not detected above this) |
| 6 May 2026, 12:28 | <0.002 | below 0.002 mg/l (not detected above this) |
| 17 Apr 2026, 10:30 | <0.002 | below 0.002 mg/l (not detected above this) |
| 19 Mar 2026, 11:13 | 0.056 | 0.056 mg/l |
| 23 Feb 2026, 10:18 | 0.07 | 0.07 mg/l |
| 16 Jan 2026, 11:53 | 0.13 | 0.13 mg/l |
| 3 Dec 2025, 11:10 | 0.15 | 0.15 mg/l |
| 14 Nov 2025, 09:09 | 0.0085 | 0.0085 mg/l |
| 29 Oct 2025, 10:38 | 0.061 | 0.061 mg/l |
| 10 Sep 2025, 09:50 | 0.011 | 0.011 mg/l |
| 21 Aug 2025, 10:06 | <0.002 | below 0.002 mg/l (not detected above this) |
| 15 Jul 2025, 11:18 | 0.0059 | 0.0059 mg/l |
| 17 Jun 2025, 09:36 | <0.01 | below 0.01 mg/l (not detected above this) |
| 8 May 2025, 12:19 | <0.002 | below 0.002 mg/l (not detected above this) |
| 1 Apr 2025, 10:42 | 0.15 | 0.15 mg/l |
| 10 Mar 2025, 11:06 | 0.11 | 0.11 mg/l |
| 10 Feb 2025, 10:11 | 0.34 | 0.34 mg/l |
| 8 Jan 2025, 12:07 | 0.26 | 0.26 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
below 0.004 mg/l (not detected above this)
Sampled 6 Aug 2026, 56 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 15:32 | <0.004 | below 0.004 mg/l (not detected above this) |
| 10 Jul 2026, 13:31 | <0.004 | below 0.004 mg/l (not detected above this) |
| 9 Jun 2026, 09:35 | <0.004 | below 0.004 mg/l (not detected above this) |
| 6 May 2026, 12:28 | <0.004 | below 0.004 mg/l (not detected above this) |
| 17 Apr 2026, 10:30 | 0.989 | 0.989 mg/l |
| 19 Mar 2026, 11:13 | 2.96 | 2.96 mg/l |
| 23 Feb 2026, 10:18 | 5.85 | 5.85 mg/l |
| 16 Jan 2026, 11:53 | 9.97 | 9.97 mg/l |
| 3 Dec 2025, 11:10 | 7.15 | 7.15 mg/l |
| 14 Nov 2025, 09:09 | 0.592 | 0.592 mg/l |
| 29 Oct 2025, 10:38 | 0.559 | 0.559 mg/l |
| 10 Sep 2025, 09:50 | 0.0928 | 0.0928 mg/l |
| 21 Aug 2025, 10:06 | 0.059 | 0.059 mg/l |
| 15 Jul 2025, 11:18 | <0.004 | below 0.004 mg/l (not detected above this) |
| 17 Jun 2025, 09:36 | <0.004 | below 0.004 mg/l (not detected above this) |
| 8 May 2025, 12:19 | <0.004 | below 0.004 mg/l (not detected above this) |
| 1 Apr 2025, 10:42 | 1.18 | 1.18 mg/l |
| 10 Mar 2025, 11:06 | 1.78 | 1.78 mg/l |
| 10 Feb 2025, 10:11 | 2.47 | 2.47 mg/l |
| 8 Jan 2025, 12:07 | 6.77 | 6.77 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.15 mg/l
Sampled 6 Aug 2026, 56 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 15:32 | 0.15 | 0.15 mg/l |
| 10 Jul 2026, 13:31 | 0.083 | 0.083 mg/l |
| 9 Jun 2026, 09:35 | 0.016 | 0.016 mg/l |
| 6 May 2026, 12:28 | 0.011 | 0.011 mg/l |
| 17 Apr 2026, 10:30 | 0.017 | 0.017 mg/l |
| 19 Mar 2026, 11:13 | 0.04 | 0.04 mg/l |
| 23 Feb 2026, 10:18 | 0.081 | 0.081 mg/l |
| 16 Jan 2026, 11:53 | 0.13 | 0.13 mg/l |
| 3 Dec 2025, 11:10 | 0.26 | 0.26 mg/l |
| 14 Nov 2025, 09:09 | 0.023 | 0.023 mg/l |
| 29 Oct 2025, 10:38 | 0.038 | 0.038 mg/l |
| 10 Sep 2025, 09:50 | 0.018 | 0.018 mg/l |
| 21 Aug 2025, 10:06 | 0.027 | 0.027 mg/l |
| 15 Jul 2025, 11:18 | 0.093 | 0.093 mg/l |
| 17 Jun 2025, 09:36 | 0.11 | 0.11 mg/l |
| 8 May 2025, 12:19 | 0.01 | 0.01 mg/l |
| 1 Apr 2025, 10:42 | 0.058 | 0.058 mg/l |
| 10 Mar 2025, 11:06 | 0.043 | 0.043 mg/l |
| 10 Feb 2025, 10:11 | 0.09 | 0.09 mg/l |
| 8 Jan 2025, 12:07 | 0.1 | 0.1 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
19998 µS/cm
Sampled 6 Aug 2026, 56 days ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Aug 2026, 15:32 | 19998 | 19998 µS/cm |
| 10 Jul 2026, 13:31 | 12627 | 12627 µS/cm |
| 9 Jun 2026, 09:35 | 5989 | 5989 µS/cm |
| 6 May 2026, 12:28 | 5210 | 5210 µS/cm |
| 17 Apr 2026, 10:30 | 4264 | 4264 µS/cm |
| 19 Mar 2026, 11:13 | 4040 | 4040 µS/cm |
| 23 Feb 2026, 10:18 | 3079 | 3079 µS/cm |
| 16 Jan 2026, 11:53 | 2013 | 2013 µS/cm |
| 3 Dec 2025, 11:10 | 2504 | 2504 µS/cm |
| 14 Nov 2025, 09:09 | 5980 | 5980 µS/cm |
| 29 Oct 2025, 10:38 | 10040 | 10040 µS/cm |
| 10 Sep 2025, 09:50 | 2445 | 2445 µS/cm |
| 21 Aug 2025, 10:06 | 1026 | 1026 µS/cm |
| 15 Jul 2025, 11:18 | 8122 | 8122 µS/cm |
| 17 Jun 2025, 09:36 | 5033 | 5033 µS/cm |
| 8 May 2025, 12:19 | 4273 | 4273 µS/cm |
| 1 Apr 2025, 10:42 | 4142 | 4142 µS/cm |
| 10 Mar 2025, 11:06 | 4258 | 4258 µS/cm |
| 10 Feb 2025, 10:11 | 4218 | 4218 µS/cm |
| 8 Jan 2025, 12:07 | 2449 | 2449 µS/cm |
Everything measured here
20 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 20 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 20 | Jan 2025 – Aug 2026 | 109.3% 6 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 20 | Jan 2025 – Aug 2026 | 9.81 mg/l 6 Aug 2026 |
| Temperature of Water 0076 | River water | 20 | Jan 2025 – Aug 2026 | 20.3 °C 6 Aug 2026 |
| pH 0061 | River water | 20 | Jan 2025 – Aug 2026 | 8.46 6 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 20 | Jan 2025 – Aug 2026 | below 0.002 mg/l 6 Aug 2026 |
| Nitrate as N 0117 | River water | 20 | Jan 2025 – Aug 2026 | below 0.004 mg/l 6 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 20 | Jan 2025 – Aug 2026 | 0.15 mg/l 6 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 20 | Jan 2025 – Aug 2026 | 19998 µS/cm 6 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 20 | Jan 2025 – Aug 2026 | 310 mg/l 6 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 20 | Jan 2025 – Aug 2026 | below 0.00008 mg/l 6 Aug 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 20 | Jan 2025 – Aug 2026 | 11 mg/l 6 Aug 2026 |
| Chloride 0172 | River water | 20 | Jan 2025 – Aug 2026 | above 500 mg/l 6 Aug 2026 |
| Flow Type 2896 | River water | 18 | Jan 2025 – Aug 2026 | Moderate Flow 6 Aug 2026 |
| LCMS Screen : Semi Quantitative 7299 | River water | 1 | Jun 2026 – Jun 2026 | 1 text result 9 Jun 2026 |
| Nitrite as N 0118 | River water | 20 | Jan 2025 – Aug 2026 | below 0.001 mg/l 6 Aug 2026 |
| Nitrogen, Total as N 9686 | River water | 18 | Jan 2025 – Jun 2026 | 1.7 mg/l 9 Jun 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 20 | Jan 2025 – Aug 2026 | below 0.005 mg/l 6 Aug 2026 |
| Phosphorus, Total as P 0348 | River water | 20 | Jan 2025 – Aug 2026 | 0.061 mg/l 6 Aug 2026 |
| Silica, reactive as SiO2 0182 | River water | 20 | Jan 2025 – Aug 2026 | 0.11 mg/l 6 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 9 | Dec 2025 – Aug 2026 | 41 mg/l 6 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.