Wold Grift Drain upstream of Mablethorpe sewage treatment works O/F
EA name: WOLD GRIFT DRN.U/S MABLETHORPE STW O/F
Environment Agency sampling point AN-WOLD1 · 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
- 4 Mar 2025, 07:4219 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
- 16 since 9 Oct 2023 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 549080, 382420As published, to the nearest 10 m. Open in a map
- River, by its own name
- Wold Grift
- River, by the map
- Wold Grift DrainPlaced on a river whose name partly matches its own, 9 m from the line.
- Next gauge downstream
- None tracedThe map stops before any gauge.
- Why it was sampled
- Planned investigation (local monitoring) (16 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
115.3%
Sampled 4 Mar 2025, 19 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 07:42 | 115.3 | 115.3% |
| 4 Feb 2025, 08:52 | 95.1 | 95.1% |
| 6 Jan 2025, 11:26 | 89.4 | 89.4% |
| 5 Dec 2024, 08:43 | 93.3 | 93.3% |
| 8 Nov 2024, 11:04 | 67.1 | 67.1% |
| 2 Oct 2024, 10:45 | 71.2 | 71.2% |
| 3 Sep 2024, 08:16 | 86.2 | 86.2% |
| 1 Aug 2024, 09:58 | 116.4 | 116.4% |
| 1 Jul 2024, 08:53 | 93.4 | 93.4% |
| 4 Jun 2024, 10:22 | 90.1 | 90.1% |
| 5 Mar 2024, 11:23 | 91.6 | 91.6% |
| 1 Feb 2024, 10:41 | 85.5 | 85.5% |
| 2 Jan 2024, 10:18 | 86 | 86% |
| 1 Dec 2023, 08:28 | 85.4 | 85.4% |
| 6 Nov 2023, 09:30 | 70.7 | 70.7% |
| 9 Oct 2023, 10:37 | 70.2 | 70.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
14.8 mg/l
Sampled 4 Mar 2025, 19 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 07:42 | 14.8 | 14.8 mg/l |
| 4 Feb 2025, 08:52 | 12.4 | 12.4 mg/l |
| 6 Jan 2025, 11:26 | 11.2 | 11.2 mg/l |
| 5 Dec 2024, 08:43 | 10.9 | 10.9 mg/l |
| 8 Nov 2024, 11:04 | 7.38 | 7.38 mg/l |
| 2 Oct 2024, 10:45 | 7.43 | 7.43 mg/l |
| 3 Sep 2024, 08:16 | 8.11 | 8.11 mg/l |
| 1 Aug 2024, 09:58 | 10.6 | 10.6 mg/l |
| 1 Jul 2024, 08:53 | 8.97 | 8.97 mg/l |
| 4 Jun 2024, 10:22 | 8.78 | 8.78 mg/l |
| 5 Mar 2024, 11:23 | 10.8 | 10.8 mg/l |
| 1 Feb 2024, 10:41 | 10.9 | 10.9 mg/l |
| 2 Jan 2024, 10:18 | 10.2 | 10.2 mg/l |
| 1 Dec 2023, 08:28 | 10.9 | 10.9 mg/l |
| 6 Nov 2023, 09:30 | 8.02 | 8.02 mg/l |
| 9 Oct 2023, 10:37 | 6.85 | 6.85 mg/l |
Water temperature
code 0076 · °C
4.8 °C
Sampled 4 Mar 2025, 19 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 07:42 | 4.8 | 4.8 °C |
| 4 Feb 2025, 08:52 | 4 | 4 °C |
| 6 Jan 2025, 11:26 | 5.8 | 5.8 °C |
| 5 Dec 2024, 08:43 | 8.5 | 8.5 °C |
| 8 Nov 2024, 11:04 | 11 | 11 °C |
| 2 Oct 2024, 10:45 | 13.3 | 13.3 °C |
| 3 Sep 2024, 08:16 | 18.2 | 18.2 °C |
| 1 Aug 2024, 09:58 | 19.6 | 19.6 °C |
| 1 Jul 2024, 08:53 | 17.2 | 17.2 °C |
| 4 Jun 2024, 10:22 | 16.5 | 16.5 °C |
| 5 Mar 2024, 11:23 | 8 | 8 °C |
| 1 Feb 2024, 10:41 | 5 | 5 °C |
| 2 Jan 2024, 10:18 | 7.7 | 7.7 °C |
| 1 Dec 2023, 08:28 | 4.8 | 4.8 °C |
| 6 Nov 2023, 09:30 | 9.7 | 9.7 °C |
| 9 Oct 2023, 10:37 | 16.4 | 16.4 °C |
pH
code 0061
8.19
Sampled 4 Mar 2025, 19 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 07:42 | 8.19 | 8.19 |
| 4 Feb 2025, 08:52 | 8.21 | 8.21 |
| 6 Jan 2025, 11:26 | 7.76 | 7.76 |
| 5 Dec 2024, 08:43 | 8.09 | 8.09 |
| 8 Nov 2024, 11:04 | 7.85 | 7.85 |
| 2 Oct 2024, 10:45 | 7.55 | 7.55 |
| 3 Sep 2024, 08:16 | 7.9 | 7.9 |
| 1 Aug 2024, 09:58 | 8.21 | 8.21 |
| 1 Jul 2024, 08:53 | 7.95 | 7.95 |
| 4 Jun 2024, 10:22 | 7.96 | 7.96 |
| 5 Mar 2024, 11:23 | 7.99 | 7.99 |
| 1 Feb 2024, 10:41 | 8.09 | 8.09 |
| 2 Jan 2024, 10:18 | 7.71 | 7.71 |
| 1 Dec 2023, 08:28 | 7.96 | 7.96 |
| 6 Nov 2023, 09:30 | 7.62 | 7.62 |
| 9 Oct 2023, 10:37 | 7.86 | 7.86 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.095 mg/l
Sampled 4 Mar 2025, 19 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 07:42 | 0.095 | 0.095 mg/l |
| 4 Feb 2025, 08:52 | 0.16 | 0.16 mg/l |
| 6 Jan 2025, 11:26 | 0.18 | 0.18 mg/l |
| 5 Dec 2024, 08:43 | 0.076 | 0.076 mg/l |
| 8 Nov 2024, 11:04 | 0.31 | 0.31 mg/l |
| 2 Oct 2024, 10:45 | 0.07 | 0.07 mg/l |
| 3 Sep 2024, 08:16 | 0.15 | 0.15 mg/l |
| 1 Aug 2024, 09:58 | 0.079 | 0.079 mg/l |
| 1 Jul 2024, 08:53 | 0.31 | 0.31 mg/l |
| 4 Jun 2024, 10:22 | 0.26 | 0.26 mg/l |
| 5 Mar 2024, 11:23 | 0.28 | 0.28 mg/l |
| 1 Feb 2024, 10:41 | 0.86 | 0.86 mg/l |
| 2 Jan 2024, 10:18 | 0.13 | 0.13 mg/l |
| 1 Dec 2023, 08:28 | 0.12 | 0.12 mg/l |
| 6 Nov 2023, 09:30 | 0.13 | 0.13 mg/l |
| 9 Oct 2023, 10:37 | 0.11 | 0.11 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
5.62 mg/l
Sampled 4 Mar 2025, 19 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 07:42 | 5.62 | 5.62 mg/l |
| 4 Feb 2025, 08:52 | 6.21 | 6.21 mg/l |
| 6 Jan 2025, 11:26 | 5.48 | 5.48 mg/l |
| 8 Nov 2024, 11:04 | 6.97 | 6.97 mg/l |
| 2 Oct 2024, 10:45 | 16 | 16 mg/l |
| 3 Sep 2024, 08:16 | 7.7 | 7.7 mg/l |
| 1 Aug 2024, 09:58 | 6.29 | 6.29 mg/l |
| 1 Jul 2024, 08:53 | 9.16 | 9.16 mg/l |
| 4 Jun 2024, 10:22 | 8.03 | 8.03 mg/l |
| 5 Mar 2024, 11:23 | 5.35 | 5.35 mg/l |
| 1 Feb 2024, 10:41 | 4.78 | 4.78 mg/l |
| 2 Jan 2024, 10:18 | 3.19 | 3.19 mg/l |
| 1 Dec 2023, 08:28 | 7.06 | 7.06 mg/l |
| 6 Nov 2023, 09:30 | 6.34 | 6.34 mg/l |
| 9 Oct 2023, 10:37 | 4.35 | 4.35 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.034 mg/l
Sampled 4 Mar 2025, 19 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 07:42 | 0.034 | 0.034 mg/l |
| 4 Feb 2025, 08:52 | 0.06 | 0.06 mg/l |
| 6 Jan 2025, 11:26 | 0.14 | 0.14 mg/l |
| 8 Nov 2024, 11:04 | 0.55 | 0.55 mg/l |
| 2 Oct 2024, 10:45 | 0.24 | 0.24 mg/l |
| 3 Sep 2024, 08:16 | 0.74 | 0.74 mg/l |
| 1 Aug 2024, 09:58 | 0.51 | 0.51 mg/l |
| 1 Jul 2024, 08:53 | 0.48 | 0.48 mg/l |
| 4 Jun 2024, 10:22 | 0.37 | 0.37 mg/l |
| 5 Mar 2024, 11:23 | 0.11 | 0.11 mg/l |
| 1 Feb 2024, 10:41 | 0.17 | 0.17 mg/l |
| 2 Jan 2024, 10:18 | 0.14 | 0.14 mg/l |
| 1 Dec 2023, 08:28 | 0.11 | 0.11 mg/l |
| 6 Nov 2023, 09:30 | 0.13 | 0.13 mg/l |
| 9 Oct 2023, 10:37 | 0.35 | 0.35 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
857 µS/cm
Sampled 4 Mar 2025, 19 months ago · 16 results banked
Every result (16)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Mar 2025, 07:42 | 857 | 857 µS/cm |
| 4 Feb 2025, 08:52 | 899 | 899 µS/cm |
| 6 Jan 2025, 11:26 | 360 | 360 µS/cm |
| 5 Dec 2024, 08:43 | 939 | 939 µS/cm |
| 8 Nov 2024, 11:04 | 893 | 893 µS/cm |
| 2 Oct 2024, 10:45 | 574 | 574 µS/cm |
| 3 Sep 2024, 08:16 | 878 | 878 µS/cm |
| 1 Aug 2024, 09:58 | 930 | 930 µS/cm |
| 1 Jul 2024, 08:53 | 906 | 906 µS/cm |
| 4 Jun 2024, 10:22 | 916 | 916 µS/cm |
| 5 Mar 2024, 11:23 | 829 | 829 µS/cm |
| 1 Feb 2024, 10:41 | 924 | 924 µS/cm |
| 2 Jan 2024, 10:18 | 343 | 343 µS/cm |
| 1 Dec 2023, 08:28 | 874 | 874 µS/cm |
| 6 Nov 2023, 09:30 | 685 | 685 µS/cm |
| 9 Oct 2023, 10:37 | 872 | 872 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 | 16 | Oct 2023 – Mar 2025 | 115.3% 4 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 16 | Oct 2023 – Mar 2025 | 14.8 mg/l 4 Mar 2025 |
| Temperature of Water 0076 | River water | 16 | Oct 2023 – Mar 2025 | 4.8 °C 4 Mar 2025 |
| pH 0061 | River water | 16 | Oct 2023 – Mar 2025 | 8.19 4 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 16 | Oct 2023 – Mar 2025 | 0.095 mg/l 4 Mar 2025 |
| Nitrate as N 0117 | River water | 15 | Oct 2023 – Mar 2025 | 5.62 mg/l 4 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 15 | Oct 2023 – Mar 2025 | 0.034 mg/l 4 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 16 | Oct 2023 – Mar 2025 | 857 µS/cm 4 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 16 | Oct 2023 – Mar 2025 | 280 mg/l 4 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 16 | Oct 2023 – Mar 2025 | 0.00118 mg/l 4 Mar 2025 |
| BOD : 5 Day ATU 0085 | River water | 16 | Oct 2023 – Mar 2025 | 2 mg/l 4 Mar 2025 |
| Nitrite as N 0118 | River water | 16 | Oct 2023 – Mar 2025 | 0.079 mg/l 4 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 15 | Oct 2023 – Mar 2025 | 5.7 mg/l 4 Mar 2025 |
| Solids, Suspended at 105 C 0135 | River water | 16 | Oct 2023 – Mar 2025 | 12 mg/l 4 Mar 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.