River Lark Lackford Road Bridge
EA name: R.LARK LACKFORD RD.BR.
Environment Agency sampling point AN-37M11 · 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
- 9 Sep 2024, 14:142.1 years 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 8 Oct 2026 and had nothing newer.
- Samples banked
- 10 since 9 Oct 2023 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 578800, 271100As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Lark
- River, by the map
- River LarkPlaced on the river its name gives, 16 m from the line.
- Next gauge downstream
- Temple On the River Lark · 4.2 km along the river (the path rests on a repair to the map)
- Nearest gauge upstream
- Fornham St Martin On the River Lark · 8.4 km along the river
- Why it was sampled
- Monitoring (national agency policy) (10 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
83.8%
Sampled 9 Sep 2024, 2.1 years ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 14:14 | 83.8 | 83.8% |
| 5 Aug 2024, 13:44 | 97.6 | 97.6% |
| 1 Jul 2024, 14:26 | 103 | 103% |
| 4 Jun 2024, 12:34 | 95.8 | 95.8% |
| 4 Mar 2024, 15:19 | 98.2 | 98.2% |
| 8 Feb 2024, 12:21 | 89.9 | 89.9% |
| 8 Jan 2024, 15:14 | 86.3 | 86.3% |
| 12 Dec 2023, 10:04 | 84.6 | 84.6% |
| 1 Nov 2023, 12:39 | 80.5 | 80.5% |
| 9 Oct 2023, 10:58 | 80.4 | 80.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.39 mg/l
Sampled 9 Sep 2024, 2.1 years ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 14:14 | 8.39 | 8.39 mg/l |
| 5 Aug 2024, 13:44 | 9.39 | 9.39 mg/l |
| 1 Jul 2024, 14:26 | 10.1 | 10.1 mg/l |
| 4 Jun 2024, 12:34 | 9.53 | 9.53 mg/l |
| 4 Mar 2024, 15:19 | 11.6 | 11.6 mg/l |
| 8 Feb 2024, 12:21 | 10.9 | 10.9 mg/l |
| 8 Jan 2024, 15:14 | 11.1 | 11.1 mg/l |
| 12 Dec 2023, 10:04 | 10.1 | 10.1 mg/l |
| 1 Nov 2023, 12:39 | 8.78 | 8.78 mg/l |
| 9 Oct 2023, 10:58 | 8.23 | 8.23 mg/l |
Water temperature
code 0076 · °C
15.2 °C
Sampled 9 Sep 2024, 2.1 years ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 14:14 | 15.2 | 15.2 °C |
| 5 Aug 2024, 13:44 | 17.1 | 17.1 °C |
| 1 Jul 2024, 14:26 | 16.2 | 16.2 °C |
| 4 Jun 2024, 12:34 | 15.5 | 15.5 °C |
| 4 Mar 2024, 15:19 | 8.1 | 8.1 °C |
| 8 Feb 2024, 12:21 | 7.1 | 7.1 °C |
| 8 Jan 2024, 15:14 | 4.7 | 4.7 °C |
| 12 Dec 2023, 10:04 | 7.7 | 7.7 °C |
| 1 Nov 2023, 12:39 | 11.4 | 11.4 °C |
| 9 Oct 2023, 10:58 | 14.2 | 14.2 °C |
pH
code 0061
7.8
Sampled 9 Sep 2024, 2.1 years ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 14:14 | 7.8 | 7.8 |
| 5 Aug 2024, 13:44 | 8.05 | 8.05 |
| 1 Jul 2024, 14:26 | 7.99 | 7.99 |
| 4 Jun 2024, 12:34 | 7.92 | 7.92 |
| 4 Mar 2024, 15:19 | 7.92 | 7.92 |
| 8 Feb 2024, 12:21 | 7.96 | 7.96 |
| 8 Jan 2024, 15:14 | 7.85 | 7.85 |
| 12 Dec 2023, 10:04 | 7.8 | 7.8 |
| 1 Nov 2023, 12:39 | 7.86 | 7.86 |
| 9 Oct 2023, 10:58 | 7.9 | 7.9 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.044 mg/l
Sampled 9 Sep 2024, 2.1 years ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 14:14 | 0.044 | 0.044 mg/l |
| 5 Aug 2024, 13:44 | 0.033 | 0.033 mg/l |
| 1 Jul 2024, 14:26 | 0.039 | 0.039 mg/l |
| 4 Jun 2024, 12:34 | 0.084 | 0.084 mg/l |
| 4 Mar 2024, 15:19 | 0.22 | 0.22 mg/l |
| 8 Feb 2024, 12:21 | 0.12 | 0.12 mg/l |
| 8 Jan 2024, 15:14 | 0.22 | 0.22 mg/l |
| 12 Dec 2023, 10:04 | 0.091 | 0.091 mg/l |
| 1 Nov 2023, 12:39 | 0.19 | 0.19 mg/l |
| 9 Oct 2023, 10:58 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
8.68 mg/l
Sampled 9 Sep 2024, 2.1 years ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 14:14 | 8.68 | 8.68 mg/l |
| 5 Aug 2024, 13:44 | 8.37 | 8.37 mg/l |
| 1 Jul 2024, 14:26 | 8.46 | 8.46 mg/l |
| 4 Jun 2024, 12:34 | 8.92 | 8.92 mg/l |
| 4 Mar 2024, 15:19 | 8.92 | 8.92 mg/l |
| 8 Jan 2024, 15:14 | 7.74 | 7.74 mg/l |
| 12 Dec 2023, 10:04 | 9.03 | 9.03 mg/l |
| 1 Nov 2023, 12:39 | 8.05 | 8.05 mg/l |
| 9 Oct 2023, 10:58 | 7.99 | 7.99 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.11 mg/l
Sampled 9 Sep 2024, 2.1 years ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 14:14 | 0.11 | 0.11 mg/l |
| 5 Aug 2024, 13:44 | 0.16 | 0.16 mg/l |
| 1 Jul 2024, 14:26 | 0.078 | 0.078 mg/l |
| 4 Jun 2024, 12:34 | 0.11 | 0.11 mg/l |
| 4 Mar 2024, 15:19 | 0.067 | 0.067 mg/l |
| 8 Feb 2024, 12:21 | 0.088 | 0.088 mg/l |
| 8 Jan 2024, 15:14 | 0.095 | 0.095 mg/l |
| 12 Dec 2023, 10:04 | 0.1 | 0.1 mg/l |
| 1 Nov 2023, 12:39 | 0.098 | 0.098 mg/l |
| 9 Oct 2023, 10:58 | 0.12 | 0.12 mg/l |
Turbidity
code 6396 · NTU
1.5 NTU
Sampled 9 Sep 2024, 2.1 years ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 14:14 | 1.5 | 1.5 NTU |
| 5 Aug 2024, 13:44 | 2 | 2 NTU |
| 1 Jul 2024, 14:26 | 1.7 | 1.7 NTU |
| 4 Jun 2024, 12:34 | 3.4 | 3.4 NTU |
| 4 Mar 2024, 15:19 | 4.4 | 4.4 NTU |
| 8 Feb 2024, 12:21 | 6.4 | 6.4 NTU |
| 8 Jan 2024, 15:14 | 5.2 | 5.2 NTU |
| 12 Dec 2023, 10:04 | 5.7 | 5.7 NTU |
| 1 Nov 2023, 12:39 | 3.2 | 3.2 NTU |
| 9 Oct 2023, 10:58 | 2 | 2 NTU |
Conductivity
at 25 °C · code 0077 · µS/cm
982 µS/cm
Sampled 9 Sep 2024, 2.1 years ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 9 Sep 2024, 14:14 | 982 | 982 µS/cm |
| 5 Aug 2024, 13:44 | 962 | 962 µS/cm |
| 1 Jul 2024, 14:26 | 931 | 931 µS/cm |
| 4 Jun 2024, 12:34 | 877 | 877 µS/cm |
| 4 Mar 2024, 15:19 | 851 | 851 µS/cm |
| 8 Feb 2024, 12:21 | 773 | 773 µS/cm |
| 8 Jan 2024, 15:14 | 810 | 810 µS/cm |
| 12 Dec 2023, 10:04 | 812 | 812 µS/cm |
| 1 Nov 2023, 12:39 | 846 | 846 µS/cm |
| 9 Oct 2023, 10:58 | 1043 | 1043 µS/cm |
Everything measured here
15 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 15 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 10 | Oct 2023 – Sep 2024 | 83.8% 9 Sep 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 10 | Oct 2023 – Sep 2024 | 8.39 mg/l 9 Sep 2024 |
| Temperature of Water 0076 | River water | 10 | Oct 2023 – Sep 2024 | 15.2 °C 9 Sep 2024 |
| pH 0061 | River water | 10 | Oct 2023 – Sep 2024 | 7.8 9 Sep 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 10 | Oct 2023 – Sep 2024 | 0.044 mg/l 9 Sep 2024 |
| Nitrate as N 0117 | River water | 9 | Oct 2023 – Sep 2024 | 8.68 mg/l 9 Sep 2024 |
| Orthophosphate, reactive as P 0180 | River water | 10 | Oct 2023 – Sep 2024 | 0.11 mg/l 9 Sep 2024 |
| Turbidity 6396 | River water | 10 | Oct 2023 – Sep 2024 | 1.5 NTU 9 Sep 2024 |
| Conductivity at 25 C 0077 | River water | 10 | Oct 2023 – Sep 2024 | 982 µS/cm 9 Sep 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 10 | Oct 2023 – Sep 2024 | 290 mg/l 9 Sep 2024 |
| Ammonia un-ionised as N 0119 | River water | 10 | Oct 2023 – Sep 2024 | 0.00075 mg/l 9 Sep 2024 |
| Chlorophyll : Acetone Extract 7887 | River water | 10 | Oct 2023 – Sep 2024 | 4 µg/l 9 Sep 2024 |
| Nitrite as N 0118 | River water | 9 | Oct 2023 – Sep 2024 | 0.021 mg/l 9 Sep 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 9 | Oct 2023 – Sep 2024 | 8.7 mg/l 9 Sep 2024 |
| Solids, Suspended at 105 C 0135 | River water | 10 | Oct 2023 – Sep 2024 | 6.2 mg/l 9 Sep 2024 |
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.