Downstream of Black Lane
EA name: RSN2485 D/S BLACK LANE
Environment Agency sampling point TH-RSN2485 · 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
- 15 Dec 2025, 10:0910 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
- 12 since 14 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 463527, 163457As published, to the nearest 1 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- West End BrookPlaced by position alone (the only river line close by), 2 m from the line.
- Next gauge downstream
- Beech Hill On the Foudry Brook · 7.7 km along the river
- Why it was sampled
- Monitoring (national agency policy) (12 samples)
1 visit found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
90.8%
Sampled 15 Dec 2025, 10 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Dec 2025, 10:09 | 90.8 | 90.8% |
| 27 Nov 2025, 11:24 | 92.5 | 92.5% |
| 14 Oct 2025, 12:57 | 84.7 | 84.7% |
| 15 Sep 2025, 10:31 | 89 | 89% |
| 1 Jul 2025, 11:27 | 85.8 | 85.8% |
| 4 Jun 2025, 11:53 | 88 | 88% |
| 8 May 2025, 10:04 | 90.5 | 90.5% |
| 10 Apr 2025, 11:40 | 97.5 | 97.5% |
| 24 Mar 2025, 12:21 | 95.9 | 95.9% |
| 21 Feb 2025, 10:00 | 96.7 | 96.7% |
| 14 Jan 2025, 11:31 | 96.6 | 96.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.8 mg/l
Sampled 15 Dec 2025, 10 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Dec 2025, 10:09 | 10.8 | 10.8 mg/l |
| 27 Nov 2025, 11:24 | 10.9 | 10.9 mg/l |
| 14 Oct 2025, 12:57 | 9.15 | 9.15 mg/l |
| 15 Sep 2025, 10:31 | 9.15 | 9.15 mg/l |
| 1 Jul 2025, 11:27 | 7.76 | 7.76 mg/l |
| 4 Jun 2025, 11:53 | 8.92 | 8.92 mg/l |
| 8 May 2025, 10:04 | 9.98 | 9.98 mg/l |
| 10 Apr 2025, 11:40 | 10.8 | 10.8 mg/l |
| 24 Mar 2025, 12:21 | 10.9 | 10.9 mg/l |
| 21 Feb 2025, 10:00 | 11.1 | 11.1 mg/l |
| 14 Jan 2025, 11:31 | 12.5 | 12.5 mg/l |
Water temperature
code 0076 · °C
7.8 °C
Sampled 15 Dec 2025, 10 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Dec 2025, 10:09 | 7.8 | 7.8 °C |
| 27 Nov 2025, 11:24 | 8.3 | 8.3 °C |
| 14 Oct 2025, 12:57 | 11.8 | 11.8 °C |
| 15 Sep 2025, 10:31 | 14 | 14 °C |
| 1 Jul 2025, 11:27 | 20.1 | 20.1 °C |
| 4 Jun 2025, 11:53 | 14.6 | 14.6 °C |
| 8 May 2025, 10:04 | 10.9 | 10.9 °C |
| 10 Apr 2025, 11:40 | 10.7 | 10.7 °C |
| 24 Mar 2025, 12:21 | 9.6 | 9.6 °C |
| 21 Feb 2025, 10:00 | 9.3 | 9.3 °C |
| 14 Jan 2025, 11:31 | 4.4 | 4.4 °C |
pH
code 0061
7.6
Sampled 15 Dec 2025, 10 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Dec 2025, 10:09 | 7.6 | 7.6 |
| 27 Nov 2025, 11:24 | 7.33 | 7.33 |
| 14 Oct 2025, 12:57 | 7.52 | 7.52 |
| 15 Sep 2025, 10:31 | 7.57 | 7.57 |
| 1 Jul 2025, 11:27 | 7.64 | 7.64 |
| 4 Jun 2025, 11:53 | 7.86 | 7.86 |
| 8 May 2025, 10:04 | 7.78 | 7.78 |
| 10 Apr 2025, 11:40 | 7.7 | 7.7 |
| 24 Mar 2025, 12:21 | 7.87 | 7.87 |
| 21 Feb 2025, 10:00 | 7.7 | 7.7 |
| 14 Jan 2025, 11:31 | 7.73 | 7.73 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.097 mg/l
Sampled 15 Dec 2025, 10 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Dec 2025, 10:09 | 0.097 | 0.097 mg/l |
| 27 Nov 2025, 11:24 | 0.07 | 0.07 mg/l |
| 14 Oct 2025, 12:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Sep 2025, 10:31 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Jul 2025, 11:27 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Jun 2025, 11:53 | 0.087 | 0.087 mg/l |
| 8 May 2025, 10:04 | 0.036 | 0.036 mg/l |
| 10 Apr 2025, 11:40 | 0.05 | 0.05 mg/l |
| 24 Mar 2025, 12:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Feb 2025, 10:00 | 0.039 | 0.039 mg/l |
| 14 Jan 2025, 11:31 | 0.079 | 0.079 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.989 mg/l
Sampled 15 Dec 2025, 10 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Dec 2025, 10:09 | 0.989 | 0.989 mg/l |
| 27 Nov 2025, 11:24 | 0.809 | 0.809 mg/l |
| 14 Oct 2025, 12:57 | 0.226 | 0.226 mg/l |
| 15 Sep 2025, 10:31 | 0.386 | 0.386 mg/l |
| 1 Jul 2025, 11:27 | 0.416 | 0.416 mg/l |
| 4 Jun 2025, 11:53 | 0.49 | 0.49 mg/l |
| 8 May 2025, 10:04 | 0.302 | 0.302 mg/l |
| 10 Apr 2025, 11:40 | 0.196 | 0.196 mg/l |
| 24 Mar 2025, 12:21 | 0.376 | 0.376 mg/l |
| 21 Feb 2025, 10:00 | 0.683 | 0.683 mg/l |
| 14 Jan 2025, 11:31 | 0.851 | 0.851 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.034 mg/l
Sampled 15 Dec 2025, 10 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Dec 2025, 10:09 | 0.034 | 0.034 mg/l |
| 27 Nov 2025, 11:24 | 0.035 | 0.035 mg/l |
| 14 Oct 2025, 12:57 | 0.047 | 0.047 mg/l |
| 15 Sep 2025, 10:31 | 0.033 | 0.033 mg/l |
| 1 Jul 2025, 11:27 | 0.13 | 0.13 mg/l |
| 4 Jun 2025, 11:53 | 0.14 | 0.14 mg/l |
| 8 May 2025, 10:04 | 0.068 | 0.068 mg/l |
| 10 Apr 2025, 11:40 | 0.032 | 0.032 mg/l |
| 24 Mar 2025, 12:21 | 0.063 | 0.063 mg/l |
| 21 Feb 2025, 10:00 | 0.038 | 0.038 mg/l |
| 14 Jan 2025, 11:31 | 0.028 | 0.028 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
383 µS/cm
Sampled 15 Dec 2025, 10 months ago · 11 results banked
Every result (11)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Dec 2025, 10:09 | 383 | 383 µS/cm |
| 27 Nov 2025, 11:24 | 424 | 424 µS/cm |
| 14 Oct 2025, 12:57 | 448 | 448 µS/cm |
| 15 Sep 2025, 10:31 | 397 | 397 µS/cm |
| 1 Jul 2025, 11:27 | 473 | 473 µS/cm |
| 4 Jun 2025, 11:53 | 407 | 407 µS/cm |
| 8 May 2025, 10:04 | 359 | 359 µS/cm |
| 10 Apr 2025, 11:40 | 327 | 327 µS/cm |
| 24 Mar 2025, 12:21 | 327 | 327 µS/cm |
| 21 Feb 2025, 10:00 | 325 | 325 µS/cm |
| 14 Jan 2025, 11:31 | 285 | 285 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 | 11 | Jan 2025 – Dec 2025 | 90.8% 15 Dec 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 11 | Jan 2025 – Dec 2025 | 10.8 mg/l 15 Dec 2025 |
| Temperature of Water 0076 | River water | 11 | Jan 2025 – Dec 2025 | 7.8 °C 15 Dec 2025 |
| pH 0061 | River water | 11 | Jan 2025 – Dec 2025 | 7.6 15 Dec 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 11 | Jan 2025 – Dec 2025 | 0.097 mg/l 15 Dec 2025 |
| Nitrate as N 0117 | River water | 11 | Jan 2025 – Dec 2025 | 0.989 mg/l 15 Dec 2025 |
| Orthophosphate, reactive as P 0180 | River water | 11 | Jan 2025 – Dec 2025 | 0.034 mg/l 15 Dec 2025 |
| Conductivity at 25 C 0077 | River water | 11 | Jan 2025 – Dec 2025 | 383 µS/cm 15 Dec 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 11 | Jan 2025 – Dec 2025 | 55 mg/l 15 Dec 2025 |
| Ammonia un-ionised as N 0119 | River water | 11 | Jan 2025 – Dec 2025 | 0.00061 mg/l 15 Dec 2025 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 11 | Jan 2025 – Dec 2025 | 6.8 mg/l 15 Dec 2025 |
| Chloride 0172 | River water | 11 | Jan 2025 – Dec 2025 | 44 mg/l 15 Dec 2025 |
| Flow Type 2896 | River water | 12 | Jan 2025 – Dec 2025 | Moderate Flow 15 Dec 2025 |
| Nitrite as N 0118 | River water | 11 | Jan 2025 – Dec 2025 | 0.011 mg/l 15 Dec 2025 |
| Nitrogen, Total as N 9686 | River water | 11 | Jan 2025 – Dec 2025 | 1.6 mg/l 15 Dec 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 11 | Jan 2025 – Dec 2025 | 1 mg/l 15 Dec 2025 |
| No flow /No sample 7668 | River water | 1 | Aug 2025 – Aug 2025 | No flow/discharge at sampling point 27 Aug 2025 |
| Phosphorus, Total as P 0348 | River water | 11 | Jan 2025 – Dec 2025 | 0.057 mg/l 15 Dec 2025 |
| Silica, reactive as SiO2 0182 | River water | 11 | Jan 2025 – Dec 2025 | 15 mg/l 15 Dec 2025 |
| Solids, Suspended at 105 C 0135 | River water | 1 | Dec 2025 – Dec 2025 | 6.8 mg/l 15 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.