Holbeach River upstream of Sluice Farm Hstmarks
EA name: HOLBEACH RIVER U/S SLUICE FARM HSTMARKS
Environment Agency sampling point AN-HOLR180S · 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
- 16 Dec 2025, 11:019 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
- 22 since 16 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 534811, 331674As published, to the nearest 1 m. Open in a map
- River, by its own name
- Holbeach
- River, by the map
- Holbeach RiverPlaced on the river its name gives, 0 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Why it was sampled
- Monitoring (national agency policy) (22 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
68.6%
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:01 | 68.6 | 68.6% |
| 3 Dec 2025, 10:18 | 73.6 | 73.6% |
| 19 Nov 2025, 09:26 | 83.5 | 83.5% |
| 4 Nov 2025, 09:57 | 85.7 | 85.7% |
| 12 Mar 2025, 09:13 | 64.6 | 64.6% |
| 14 Feb 2025, 08:47 | 59.3 | 59.3% |
| 29 Jan 2025, 12:58 | 81.1 | 81.1% |
| 6 Dec 2024, 12:50 | 82.5 | 82.5% |
| 20 Nov 2024, 10:45 | 84.7 | 84.7% |
| 21 Oct 2024, 09:36 | 78.4 | 78.4% |
| 17 Sep 2024, 08:56 | 49.3 | 49.3% |
| 30 Aug 2024, 09:12 | 34.8 | 34.8% |
| 25 Jul 2024, 08:58 | 47.4 | 47.4% |
| 28 Jun 2024, 10:59 | 85.8 | 85.8% |
| 23 May 2024, 13:02 | 97.6 | 97.6% |
| 29 Apr 2024, 10:02 | 65.1 | 65.1% |
| 18 Mar 2024, 10:20 | 89.7 | 89.7% |
| 19 Feb 2024, 10:30 | 73.6 | 73.6% |
| 15 Jan 2024, 10:07 | 85.8 | 85.8% |
| 6 Dec 2023, 11:10 | 69.9 | 69.9% |
| 20 Nov 2023, 10:29 | 73.5 | 73.5% |
| 16 Oct 2023, 10:32 | 74.7 | 74.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.82 mg/l
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:01 | 7.82 | 7.82 mg/l |
| 3 Dec 2025, 10:18 | 9.08 | 9.08 mg/l |
| 19 Nov 2025, 09:26 | 10.5 | 10.5 mg/l |
| 4 Nov 2025, 09:57 | 9.3 | 9.3 mg/l |
| 12 Mar 2025, 09:13 | 7.91 | 7.91 mg/l |
| 14 Feb 2025, 08:47 | 7.51 | 7.51 mg/l |
| 29 Jan 2025, 12:58 | 9.76 | 9.76 mg/l |
| 6 Dec 2024, 12:50 | 9.95 | 9.95 mg/l |
| 20 Nov 2024, 10:45 | 11.2 | 11.2 mg/l |
| 21 Oct 2024, 09:36 | 8.73 | 8.73 mg/l |
| 17 Sep 2024, 08:56 | 5.58 | 5.58 mg/l |
| 30 Aug 2024, 09:12 | 3.69 | 3.69 mg/l |
| 25 Jul 2024, 08:58 | 4.6 | 4.6 mg/l |
| 28 Jun 2024, 10:59 | 8.29 | 8.29 mg/l |
| 23 May 2024, 13:02 | 9.77 | 9.77 mg/l |
| 29 Apr 2024, 10:02 | 7.42 | 7.42 mg/l |
| 18 Mar 2024, 10:20 | 10.1 | 10.1 mg/l |
| 19 Feb 2024, 10:30 | 8.37 | 8.37 mg/l |
| 15 Jan 2024, 10:07 | 11.2 | 11.2 mg/l |
| 6 Dec 2023, 11:10 | 8.71 | 8.71 mg/l |
| 20 Nov 2023, 10:29 | 8.26 | 8.26 mg/l |
| 16 Oct 2023, 10:32 | 8.97 | 8.97 mg/l |
Water temperature
code 0076 · °C
9.5 °C
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:01 | 9.5 | 9.5 °C |
| 3 Dec 2025, 10:18 | 6.3 | 6.3 °C |
| 19 Nov 2025, 09:26 | 5.7 | 5.7 °C |
| 4 Nov 2025, 09:57 | 11.6 | 11.6 °C |
| 12 Mar 2025, 09:13 | 6.6 | 6.6 °C |
| 14 Feb 2025, 08:47 | 5.3 | 5.3 °C |
| 29 Jan 2025, 12:58 | 7.3 | 7.3 °C |
| 6 Dec 2024, 12:50 | 7.2 | 7.2 °C |
| 20 Nov 2024, 10:45 | 3.6 | 3.6 °C |
| 21 Oct 2024, 09:36 | 10.5 | 10.5 °C |
| 17 Sep 2024, 08:56 | 9.8 | 9.8 °C |
| 30 Aug 2024, 09:12 | 12.6 | 12.6 °C |
| 25 Jul 2024, 08:58 | 16.7 | 16.7 °C |
| 28 Jun 2024, 10:59 | 16.9 | 16.9 °C |
| 23 May 2024, 13:02 | 15.2 | 15.2 °C |
| 29 Apr 2024, 10:02 | 9.5 | 9.5 °C |
| 18 Mar 2024, 10:20 | 10.2 | 10.2 °C |
| 19 Feb 2024, 10:30 | 9.6 | 9.6 °C |
| 15 Jan 2024, 10:07 | 4.2 | 4.2 °C |
| 6 Dec 2023, 11:10 | 5.9 | 5.9 °C |
| 20 Nov 2023, 10:29 | 10.1 | 10.1 °C |
| 16 Oct 2023, 10:32 | 7.4 | 7.4 °C |
pH
code 0061
7.81
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:01 | 7.81 | 7.81 |
| 3 Dec 2025, 10:18 | 7.83 | 7.83 |
| 19 Nov 2025, 09:26 | 7.92 | 7.92 |
| 4 Nov 2025, 09:57 | 7.96 | 7.96 |
| 12 Mar 2025, 09:13 | 7.76 | 7.76 |
| 14 Feb 2025, 08:47 | 7.81 | 7.81 |
| 29 Jan 2025, 12:58 | 7.69 | 7.69 |
| 6 Dec 2024, 12:50 | 7.95 | 7.95 |
| 20 Nov 2024, 10:45 | 7.88 | 7.88 |
| 21 Oct 2024, 09:36 | 7.87 | 7.87 |
| 17 Sep 2024, 08:56 | 7.62 | 7.62 |
| 30 Aug 2024, 09:12 | 7.54 | 7.54 |
| 25 Jul 2024, 08:58 | 7.82 | 7.82 |
| 28 Jun 2024, 10:59 | 7.86 | 7.86 |
| 23 May 2024, 13:02 | 7.72 | 7.72 |
| 29 Apr 2024, 10:02 | 7.62 | 7.62 |
| 18 Mar 2024, 10:20 | 7.74 | 7.74 |
| 19 Feb 2024, 10:30 | 7.58 | 7.58 |
| 15 Jan 2024, 10:07 | 7.66 | 7.66 |
| 6 Dec 2023, 11:10 | 7.72 | 7.72 |
| 20 Nov 2023, 10:29 | 7.64 | 7.64 |
| 16 Oct 2023, 10:32 | 7.77 | 7.77 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.8 mg/l
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:01 | 0.8 | 0.8 mg/l |
| 3 Dec 2025, 10:18 | 2 | 2 mg/l |
| 19 Nov 2025, 09:26 | 0.78 | 0.78 mg/l |
| 4 Nov 2025, 09:57 | 0.27 | 0.27 mg/l |
| 12 Mar 2025, 09:13 | 0.67 | 0.67 mg/l |
| 14 Feb 2025, 08:47 | 1.2 | 1.2 mg/l |
| 29 Jan 2025, 12:58 | 0.98 | 0.98 mg/l |
| 6 Dec 2024, 12:50 | 0.37 | 0.37 mg/l |
| 20 Nov 2024, 10:45 | 0.73 | 0.73 mg/l |
| 21 Oct 2024, 09:36 | 0.46 | 0.46 mg/l |
| 17 Sep 2024, 08:56 | 0.62 | 0.62 mg/l |
| 30 Aug 2024, 09:12 | 0.24 | 0.24 mg/l |
| 25 Jul 2024, 08:58 | 0.048 | 0.048 mg/l |
| 28 Jun 2024, 10:59 | 0.084 | 0.084 mg/l |
| 23 May 2024, 13:02 | 0.15 | 0.15 mg/l |
| 29 Apr 2024, 10:02 | 2.3 | 2.3 mg/l |
| 18 Mar 2024, 10:20 | 0.48 | 0.48 mg/l |
| 19 Feb 2024, 10:30 | 0.45 | 0.45 mg/l |
| 15 Jan 2024, 10:07 | 1.1 | 1.1 mg/l |
| 6 Dec 2023, 11:10 | 0.37 | 0.37 mg/l |
| 20 Nov 2023, 10:29 | 0.37 | 0.37 mg/l |
| 16 Oct 2023, 10:32 | 0.41 | 0.41 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.64 mg/l
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:01 | 4.64 | 4.64 mg/l |
| 3 Dec 2025, 10:18 | 8.35 | 8.35 mg/l |
| 19 Nov 2025, 09:26 | 10.6 | 10.6 mg/l |
| 4 Nov 2025, 09:57 | 12.8 | 12.8 mg/l |
| 12 Mar 2025, 09:13 | 5.16 | 5.16 mg/l |
| 14 Feb 2025, 08:47 | 5.13 | 5.13 mg/l |
| 29 Jan 2025, 12:58 | 3.34 | 3.34 mg/l |
| 6 Dec 2024, 12:50 | 2.84 | 2.84 mg/l |
| 20 Nov 2024, 10:45 | 4.15 | 4.15 mg/l |
| 21 Oct 2024, 09:36 | 3.82 | 3.82 mg/l |
| 17 Sep 2024, 08:56 | 9.16 | 9.16 mg/l |
| 30 Aug 2024, 09:12 | 6.35 | 6.35 mg/l |
| 25 Jul 2024, 08:58 | 6.32 | 6.32 mg/l |
| 28 Jun 2024, 10:59 | 6.56 | 6.56 mg/l |
| 23 May 2024, 13:02 | 7.65 | 7.65 mg/l |
| 29 Apr 2024, 10:02 | 3.36 | 3.36 mg/l |
| 18 Mar 2024, 10:20 | 3.11 | 3.11 mg/l |
| 19 Feb 2024, 10:30 | 5.04 | 5.04 mg/l |
| 15 Jan 2024, 10:07 | 3.37 | 3.37 mg/l |
| 6 Dec 2023, 11:10 | 5.39 | 5.39 mg/l |
| 20 Nov 2023, 10:29 | 3.64 | 3.64 mg/l |
| 16 Oct 2023, 10:32 | 7.35 | 7.35 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.063 mg/l
Sampled 16 Dec 2025, 9 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:01 | 0.063 | 0.063 mg/l |
| 3 Dec 2025, 10:18 | 0.056 | 0.056 mg/l |
| 19 Nov 2025, 09:26 | 0.059 | 0.059 mg/l |
| 4 Nov 2025, 09:57 | 0.065 | 0.065 mg/l |
| 12 Mar 2025, 09:13 | 0.045 | 0.045 mg/l |
| 14 Feb 2025, 08:47 | 0.098 | 0.098 mg/l |
| 29 Jan 2025, 12:58 | 0.055 | 0.055 mg/l |
| 20 Nov 2024, 10:45 | 0.069 | 0.069 mg/l |
| 21 Oct 2024, 09:36 | 0.096 | 0.096 mg/l |
| 17 Sep 2024, 08:56 | 0.16 | 0.16 mg/l |
| 30 Aug 2024, 09:12 | 0.096 | 0.096 mg/l |
| 25 Jul 2024, 08:58 | 0.057 | 0.057 mg/l |
| 28 Jun 2024, 10:59 | 0.06 | 0.06 mg/l |
| 23 May 2024, 13:02 | 0.085 | 0.085 mg/l |
| 29 Apr 2024, 10:02 | 0.1 | 0.1 mg/l |
| 18 Mar 2024, 10:20 | 0.032 | 0.032 mg/l |
| 19 Feb 2024, 10:30 | 0.032 | 0.032 mg/l |
| 15 Jan 2024, 10:07 | 0.065 | 0.065 mg/l |
| 6 Dec 2023, 11:10 | 0.091 | 0.091 mg/l |
| 20 Nov 2023, 10:29 | 0.13 | 0.13 mg/l |
| 16 Oct 2023, 10:32 | 0.52 | 0.52 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
2090 µS/cm
Sampled 16 Dec 2025, 9 months ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 16 Dec 2025, 11:01 | 2090 | 2090 µS/cm |
| 3 Dec 2025, 10:18 | 1885 | 1885 µS/cm |
| 19 Nov 2025, 09:26 | 1840 | 1840 µS/cm |
| 4 Nov 2025, 09:57 | 2284 | 2284 µS/cm |
| 12 Mar 2025, 09:13 | 6371 | 6371 µS/cm |
| 14 Feb 2025, 08:47 | 5752 | 5752 µS/cm |
| 29 Jan 2025, 12:58 | 5826 | 5826 µS/cm |
| 6 Dec 2024, 12:50 | 3286 | 3286 µS/cm |
| 20 Nov 2024, 10:45 | 3249 | 3249 µS/cm |
| 21 Oct 2024, 09:36 | 3041 | 3041 µS/cm |
| 17 Sep 2024, 08:56 | 2872 | 2872 µS/cm |
| 30 Aug 2024, 09:12 | 3188 | 3188 µS/cm |
| 25 Jul 2024, 08:58 | 3202 | 3202 µS/cm |
| 28 Jun 2024, 10:59 | 4415 | 4415 µS/cm |
| 23 May 2024, 13:02 | 4563 | 4563 µS/cm |
| 29 Apr 2024, 10:02 | 4725 | 4725 µS/cm |
| 18 Mar 2024, 10:20 | 6748 | 6748 µS/cm |
| 19 Feb 2024, 10:30 | 3475 | 3475 µS/cm |
| 15 Jan 2024, 10:07 | 6753 | 6753 µS/cm |
| 6 Dec 2023, 11:10 | 2774 | 2774 µS/cm |
| 20 Nov 2023, 10:29 | 2807 | 2807 µS/cm |
| 16 Oct 2023, 10:32 | 2227 | 2227 µS/cm |
Everything measured here
13 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 13 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 22 | Oct 2023 – Dec 2025 | 68.6% 16 Dec 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Oct 2023 – Dec 2025 | 7.82 mg/l 16 Dec 2025 |
| Temperature of Water 0076 | River water | 22 | Oct 2023 – Dec 2025 | 9.5 °C 16 Dec 2025 |
| pH 0061 | River water | 22 | Oct 2023 – Dec 2025 | 7.81 16 Dec 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Oct 2023 – Dec 2025 | 0.8 mg/l 16 Dec 2025 |
| Nitrate as N 0117 | River water | 22 | Oct 2023 – Dec 2025 | 4.64 mg/l 16 Dec 2025 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Oct 2023 – Dec 2025 | 0.063 mg/l 16 Dec 2025 |
| Conductivity at 25 C 0077 | River water | 22 | Oct 2023 – Dec 2025 | 2090 µS/cm 16 Dec 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 22 | Oct 2023 – Dec 2025 | 370 mg/l 16 Dec 2025 |
| Ammonia un-ionised as N 0119 | River water | 22 | Oct 2023 – Dec 2025 | 0.00914 mg/l 16 Dec 2025 |
| BOD : 5 Day ATU 0085 | River water | 17 | Feb 2024 – Dec 2025 | 1.9 mg/l 3 Dec 2025 |
| Nitrite as N 0118 | River water | 22 | Oct 2023 – Dec 2025 | 0.36 mg/l 16 Dec 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 22 | Oct 2023 – Dec 2025 | 5 mg/l 16 Dec 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.