River Lark Flat Farm Bridge
EA name: R.LARK FLAT FARM BR.
Environment Agency sampling point AN-37M02 · 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, 12:0517 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 25 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 Planned investigation (local monitoring)
- Where
- National Grid 587100, 258200As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- Not placedGrid reference only to 100 m and no line carries the name it gives, so position alone cannot choose. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (13 samples)
Environmental monitoring statutory (EU directives) (6 samples)
Planned investigation (local monitoring) (6 samples)
2 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
83.1%
Sampled 2 Jul 2026, 3 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:38 | 83.1 | 83.1% |
| 8 Jun 2026, 12:24 | 82.9 | 82.9% |
| 11 May 2026, 11:25 | 106.4 | 106.4% |
| 10 Apr 2026, 11:30 | 114.4 | 114.4% |
| 3 Apr 2025, 11:52 | 110.8 | 110.8% |
| 3 Mar 2025, 11:52 | 101.3 | 101.3% |
| 10 Feb 2025, 13:56 | 98.8 | 98.8% |
| 22 Jan 2025, 11:45 | 100.7 | 100.7% |
| 2 Dec 2024, 13:54 | 94.7 | 94.7% |
| 18 Nov 2024, 10:50 | 86.9 | 86.9% |
| 18 Oct 2024, 10:06 | 95.8 | 95.8% |
| 17 Sep 2024, 14:10 | 108.2 | 108.2% |
| 22 Aug 2024, 12:06 | 100.8 | 100.8% |
| 18 Jul 2024, 13:46 | 99.9 | 99.9% |
| 18 Jun 2024, 12:19 | 100.9 | 100.9% |
| 20 May 2024, 10:12 | 105.6 | 105.6% |
| 15 Apr 2024, 10:27 | 104.6 | 104.6% |
| 18 Mar 2024, 10:16 | 101.9 | 101.9% |
| 19 Feb 2024, 10:17 | 95.8 | 95.8% |
| 17 Jan 2024, 12:24 | 99.7 | 99.7% |
| 7 Dec 2023, 13:10 | 98.4 | 98.4% |
| 16 Nov 2023, 10:45 | 97.2 | 97.2% |
| 16 Oct 2023, 10:40 | 97.2 | 97.2% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.87 mg/l
Sampled 2 Jul 2026, 3 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:38 | 7.87 | 7.87 mg/l |
| 8 Jun 2026, 12:24 | 8.5 | 8.5 mg/l |
| 11 May 2026, 11:25 | 12.6 | 12.6 mg/l |
| 10 Apr 2026, 11:30 | 13.3 | 13.3 mg/l |
| 3 Apr 2025, 11:52 | 12.8 | 12.8 mg/l |
| 3 Mar 2025, 11:52 | 12.9 | 12.9 mg/l |
| 10 Feb 2025, 13:56 | 12.6 | 12.6 mg/l |
| 22 Jan 2025, 11:45 | 12.9 | 12.9 mg/l |
| 2 Dec 2024, 13:54 | 11 | 11 mg/l |
| 18 Nov 2024, 10:50 | 10.6 | 10.6 mg/l |
| 18 Oct 2024, 10:06 | 10.5 | 10.5 mg/l |
| 17 Sep 2024, 14:10 | 10.9 | 10.9 mg/l |
| 22 Aug 2024, 12:06 | 10.1 | 10.1 mg/l |
| 18 Jul 2024, 13:46 | 9.73 | 9.73 mg/l |
| 18 Jun 2024, 12:19 | 10.4 | 10.4 mg/l |
| 20 May 2024, 10:12 | 11.3 | 11.3 mg/l |
| 15 Apr 2024, 10:27 | 12.1 | 12.1 mg/l |
| 18 Mar 2024, 10:16 | 11.7 | 11.7 mg/l |
| 19 Feb 2024, 10:17 | 11.2 | 11.2 mg/l |
| 17 Jan 2024, 12:24 | 13.3 | 13.3 mg/l |
| 7 Dec 2023, 13:10 | 12.1 | 12.1 mg/l |
| 16 Nov 2023, 10:45 | 11.5 | 11.5 mg/l |
| 16 Oct 2023, 10:40 | 11.8 | 11.8 mg/l |
Water temperature
code 0076 · °C
17.8 °C
Sampled 2 Jul 2026, 3 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:38 | 17.8 | 17.8 °C |
| 8 Jun 2026, 12:24 | 14.1 | 14.1 °C |
| 11 May 2026, 11:25 | 7.9 | 7.9 °C |
| 10 Apr 2026, 11:30 | 8.8 | 8.8 °C |
| 3 Apr 2025, 11:52 | 8.8 | 8.8 °C |
| 3 Mar 2025, 11:52 | 5.2 | 5.2 °C |
| 10 Feb 2025, 13:56 | 5 | 5 °C |
| 22 Jan 2025, 11:45 | 4.9 | 4.9 °C |
| 2 Dec 2024, 13:54 | 8.9 | 8.9 °C |
| 18 Nov 2024, 10:50 | 6.9 | 6.9 °C |
| 18 Oct 2024, 10:06 | 11 | 11 °C |
| 17 Sep 2024, 14:10 | 14.8 | 14.8 °C |
| 22 Aug 2024, 12:06 | 15.3 | 15.3 °C |
| 18 Jul 2024, 13:46 | 16.5 | 16.5 °C |
| 18 Jun 2024, 12:19 | 13.7 | 13.7 °C |
| 20 May 2024, 10:12 | 12.4 | 12.4 °C |
| 15 Apr 2024, 10:27 | 8.9 | 8.9 °C |
| 18 Mar 2024, 10:16 | 9.1 | 9.1 °C |
| 19 Feb 2024, 10:17 | 8.6 | 8.6 °C |
| 17 Jan 2024, 12:24 | 3.4 | 3.4 °C |
| 7 Dec 2023, 13:10 | 6.3 | 6.3 °C |
| 16 Nov 2023, 10:45 | 8.1 | 8.1 °C |
| 16 Oct 2023, 10:40 | 7.1 | 7.1 °C |
pH
code 0061
8.31
Sampled 3 Apr 2025, 18 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 3 Apr 2025, 11:52 | 8.31 | 8.31 |
| 3 Mar 2025, 11:52 | 8.37 | 8.37 |
| 10 Feb 2025, 13:56 | 8.2 | 8.2 |
| 22 Jan 2025, 11:45 | 8.18 | 8.18 |
| 2 Dec 2024, 13:54 | 8.18 | 8.18 |
| 18 Nov 2024, 10:50 | 8.04 | 8.04 |
| 18 Oct 2024, 10:06 | 8.13 | 8.13 |
| 17 Sep 2024, 14:10 | 8.21 | 8.21 |
| 22 Aug 2024, 12:06 | 8.14 | 8.14 |
| 18 Jul 2024, 13:46 | 8.29 | 8.29 |
| 18 Jun 2024, 12:19 | 8.13 | 8.13 |
| 20 May 2024, 10:12 | 7.74 | 7.74 |
| 15 Apr 2024, 10:27 | 8.27 | 8.27 |
| 18 Mar 2024, 10:16 | 8.23 | 8.23 |
| 19 Feb 2024, 10:17 | 8.02 | 8.02 |
| 17 Jan 2024, 12:24 | 8.23 | 8.23 |
| 7 Dec 2023, 13:10 | 8.15 | 8.15 |
| 16 Nov 2023, 10:45 | 8.25 | 8.25 |
| 16 Oct 2023, 10:40 | 8.31 | 8.31 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.039 mg/l
Sampled 2 Jul 2026, 3 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:38 | 0.039 | 0.039 mg/l |
| 8 Jun 2026, 12:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 May 2026, 11:25 | 0.032 | 0.032 mg/l |
| 10 Apr 2026, 11:30 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Apr 2025, 11:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 Mar 2025, 11:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Feb 2025, 13:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jan 2025, 11:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Dec 2024, 13:54 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Nov 2024, 10:50 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Oct 2024, 10:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Sep 2024, 14:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Aug 2024, 12:06 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jul 2024, 13:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jun 2024, 12:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 May 2024, 10:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Apr 2024, 10:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Mar 2024, 10:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Feb 2024, 10:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jan 2024, 12:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Dec 2023, 13:10 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Nov 2023, 10:45 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Oct 2023, 10:40 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
9.06 mg/l
Sampled 2 Jul 2026, 3 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:38 | 9.06 | 9.06 mg/l |
| 8 Jun 2026, 12:24 | 12 | 12 mg/l |
| 11 May 2026, 11:25 | 14 | 14 mg/l |
| 10 Apr 2026, 11:30 | 11 | 11 mg/l |
| 3 Apr 2025, 11:52 | 9.39 | 9.39 mg/l |
| 3 Mar 2025, 11:52 | 11 | 11 mg/l |
| 10 Feb 2025, 13:56 | 9.99 | 9.99 mg/l |
| 22 Jan 2025, 11:45 | 9.8 | 9.8 mg/l |
| 2 Dec 2024, 13:54 | 11 | 11 mg/l |
| 18 Nov 2024, 10:50 | 9.19 | 9.19 mg/l |
| 18 Oct 2024, 10:06 | 11 | 11 mg/l |
| 17 Sep 2024, 14:10 | 12 | 12 mg/l |
| 22 Aug 2024, 12:06 | 12 | 12 mg/l |
| 18 Jul 2024, 13:46 | 6.09 | 6.09 mg/l |
| 18 Jun 2024, 12:19 | 7.48 | 7.48 mg/l |
| 20 May 2024, 10:12 | 7.57 | 7.57 mg/l |
| 15 Apr 2024, 10:27 | 7.78 | 7.78 mg/l |
| 18 Mar 2024, 10:16 | 8.29 | 8.29 mg/l |
| 19 Feb 2024, 10:17 | 8.19 | 8.19 mg/l |
| 17 Jan 2024, 12:24 | 9.49 | 9.49 mg/l |
| 7 Dec 2023, 13:10 | 9.99 | 9.99 mg/l |
| 16 Nov 2023, 10:45 | 11 | 11 mg/l |
| 16 Oct 2023, 10:40 | 11 | 11 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.1 mg/l
Sampled 2 Jul 2026, 3 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:38 | 0.1 | 0.1 mg/l |
| 8 Jun 2026, 12:24 | 0.073 | 0.073 mg/l |
| 11 May 2026, 11:25 | 0.083 | 0.083 mg/l |
| 10 Apr 2026, 11:30 | 0.012 | 0.012 mg/l |
| 3 Apr 2025, 11:52 | 0.012 | 0.012 mg/l |
| 3 Mar 2025, 11:52 | 0.027 | 0.027 mg/l |
| 10 Feb 2025, 13:56 | 0.04 | 0.04 mg/l |
| 22 Jan 2025, 11:45 | 0.041 | 0.041 mg/l |
| 2 Dec 2024, 13:54 | 0.038 | 0.038 mg/l |
| 18 Nov 2024, 10:50 | 0.043 | 0.043 mg/l |
| 18 Oct 2024, 10:06 | 0.051 | 0.051 mg/l |
| 17 Sep 2024, 14:10 | 0.15 | 0.15 mg/l |
| 22 Aug 2024, 12:06 | 0.22 | 0.22 mg/l |
| 18 Jul 2024, 13:46 | 0.12 | 0.12 mg/l |
| 18 Jun 2024, 12:19 | 0.1 | 0.1 mg/l |
| 20 May 2024, 10:12 | 0.094 | 0.094 mg/l |
| 15 Apr 2024, 10:27 | 0.036 | 0.036 mg/l |
| 18 Mar 2024, 10:16 | 0.044 | 0.044 mg/l |
| 19 Feb 2024, 10:17 | 0.051 | 0.051 mg/l |
| 17 Jan 2024, 12:24 | 0.043 | 0.043 mg/l |
| 7 Dec 2023, 13:10 | 0.035 | 0.035 mg/l |
| 16 Nov 2023, 10:45 | 0.037 | 0.037 mg/l |
| 16 Oct 2023, 10:40 | 0.12 | 0.12 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
991 µS/cm
Sampled 2 Jul 2026, 3 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 2 Jul 2026, 11:38 | 991 | 991 µS/cm |
| 8 Jun 2026, 12:24 | 953 | 953 µS/cm |
| 11 May 2026, 11:25 | 856 | 856 µS/cm |
| 10 Apr 2026, 11:30 | 757 | 757 µS/cm |
| 3 Apr 2025, 11:52 | 742 | 742 µS/cm |
| 3 Mar 2025, 11:52 | 738 | 738 µS/cm |
| 10 Feb 2025, 13:56 | 755 | 755 µS/cm |
| 22 Jan 2025, 11:45 | 762 | 762 µS/cm |
| 2 Dec 2024, 13:54 | 720 | 720 µS/cm |
| 18 Nov 2024, 10:50 | 832 | 832 µS/cm |
| 18 Oct 2024, 10:06 | 708 | 708 µS/cm |
| 17 Sep 2024, 14:10 | 986 | 986 µS/cm |
| 22 Aug 2024, 12:06 | 1013 | 1013 µS/cm |
| 18 Jul 2024, 13:46 | 773 | 773 µS/cm |
| 18 Jun 2024, 12:19 | 786 | 786 µS/cm |
| 20 May 2024, 10:12 | 769 | 769 µS/cm |
| 15 Apr 2024, 10:27 | 728 | 728 µS/cm |
| 18 Mar 2024, 10:16 | 734 | 734 µS/cm |
| 19 Feb 2024, 10:17 | 619 | 619 µS/cm |
| 17 Jan 2024, 12:24 | 769 | 769 µS/cm |
| 7 Dec 2023, 13:10 | 731 | 731 µS/cm |
| 16 Nov 2023, 10:45 | 713 | 713 µS/cm |
| 16 Oct 2023, 10:40 | 792 | 792 µS/cm |
Everything measured here
19 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 19 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 23 | Oct 2023 – Jul 2026 | 83.1% 2 Jul 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Oct 2023 – Jul 2026 | 7.87 mg/l 2 Jul 2026 |
| Temperature of Water 0076 | River water | 23 | Oct 2023 – Jul 2026 | 17.8 °C 2 Jul 2026 |
| pH 0061 | River water | 19 | Oct 2023 – Apr 2025 | 8.31 3 Apr 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Oct 2023 – Jul 2026 | 0.039 mg/l 2 Jul 2026 |
| Nitrate as N 0117 | River water | 23 | Oct 2023 – Jul 2026 | 9.06 mg/l 2 Jul 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Oct 2023 – Jul 2026 | 0.1 mg/l 2 Jul 2026 |
| Conductivity at 25 C 0077 | River water | 23 | Oct 2023 – Jul 2026 | 991 µS/cm 2 Jul 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 19 | Oct 2023 – Apr 2025 | 280 mg/l 3 Apr 2025 |
| Ammonia un-ionised as N 0119 | River water | 19 | Oct 2023 – Apr 2025 | below 0.0005 mg/l 3 Apr 2025 |
| BOD : 5 Day ATU 0085 | River water | 19 | Feb 2024 – Jul 2026 | below 3 mg/l 2 Jul 2026 |
| Chemical Oxygen Demand :- {COD} 0092 | River water | 3 | Apr 2026 – Jul 2026 | 18 mg/l 2 Jul 2026 |
| Chloride 0172 | River water | 4 | Apr 2026 – Jul 2026 | 69 mg/l 2 Jul 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 3 | Apr 2026 – Jun 2026 | 2.2 µg/l 8 Jun 2026 |
| Nitrite as N 0118 | River water | 23 | Oct 2023 – Jul 2026 | 0.037 mg/l 2 Jul 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Oct 2023 – Jul 2026 | 9.1 mg/l 2 Jul 2026 |
| No flow /No sample 7668 | River water | 2 | Aug 2026 – Sep 2026 | No flow/discharge at sampling point 14 Sep 2026 |
| Silica, reactive as SiO2 0182 | River water | 4 | Apr 2026 – Jul 2026 | 11 mg/l 2 Jul 2026 |
| Solids, Suspended at 105 C 0135 | River water | 4 | Apr 2026 – Jul 2026 | 10 mg/l 2 Jul 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.