Preston Stream downstream of Preston Lane
EA name: PRESTON STREAM D/S PRESTON LANE (also listed as “PRESTON STREAM DOWNSTREAM PRESTON LANE STW”)
Environment Agency sampling point SW-Z8490143 · 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
- 21 May 2026, 15:564 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
- 24 since 29 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 403788, 177816As published, to the nearest 1 m. Open in a map
- River, by its own name
- Preston Stream
- River, by the map
- Not placedIts name gives Preston Stream; the only line close by, 4 m away, is Cowage Brook and is not traced into it. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
95.9%
Sampled 21 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 15:56 | 95.9 | 95.9% |
| 6 May 2026, 13:09 | 107.1 | 107.1% |
| 22 Apr 2026, 14:29 | 112.5 | 112.5% |
| 7 Apr 2026, 13:28 | 109.7 | 109.7% |
| 23 Mar 2026, 12:17 | 107.6 | 107.6% |
| 10 Mar 2026, 14:51 | 100.5 | 100.5% |
| 23 Feb 2026, 13:04 | 96.2 | 96.2% |
| 5 Feb 2026, 12:48 | 93.6 | 93.6% |
| 22 Jan 2026, 13:04 | 96.7 | 96.7% |
| 2 Jan 2026, 12:50 | 96.1 | 96.1% |
| 17 Dec 2025, 13:43 | 99.5 | 99.5% |
| 9 Dec 2025, 12:12 | 90.5 | 90.5% |
| 25 Nov 2025, 13:49 | 95.1 | 95.1% |
| 11 Nov 2025, 09:11 | 82.7 | 82.7% |
| 28 Oct 2025, 10:00 | 72.6 | 72.6% |
| 25 Sep 2025, 15:42 | 93.5 | 93.5% |
| 27 Aug 2025, 11:45 | 81.4 | 81.4% |
| 6 Aug 2025, 16:54 | 87.6 | 87.6% |
| 17 Jul 2025, 13:17 | 97.3 | 97.3% |
| 19 Jun 2025, 10:10 | 91.9 | 91.9% |
| 11 Apr 2025, 11:28 | 106.5 | 106.5% |
| 25 Mar 2025, 12:05 | 101.3 | 101.3% |
| 26 Feb 2025, 11:17 | 99 | 99% |
| 29 Jan 2025, 11:37 | 96.9 | 96.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.34 mg/l
Sampled 21 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 15:56 | 9.34 | 9.34 mg/l |
| 6 May 2026, 13:09 | 11.1 | 11.1 mg/l |
| 22 Apr 2026, 14:29 | 11.9 | 11.9 mg/l |
| 7 Apr 2026, 13:28 | 11.7 | 11.7 mg/l |
| 23 Mar 2026, 12:17 | 12.3 | 12.3 mg/l |
| 10 Mar 2026, 14:51 | 11.5 | 11.5 mg/l |
| 23 Feb 2026, 13:04 | 11.1 | 11.1 mg/l |
| 5 Feb 2026, 12:48 | 11.2 | 11.2 mg/l |
| 22 Jan 2026, 13:04 | 11.4 | 11.4 mg/l |
| 2 Jan 2026, 12:50 | 12.2 | 12.2 mg/l |
| 17 Dec 2025, 13:43 | 11.7 | 11.7 mg/l |
| 9 Dec 2025, 12:12 | 10.1 | 10.1 mg/l |
| 25 Nov 2025, 13:49 | 11.7 | 11.7 mg/l |
| 11 Nov 2025, 09:11 | 9.08 | 9.08 mg/l |
| 28 Oct 2025, 10:00 | 7.81 | 7.81 mg/l |
| 25 Sep 2025, 15:42 | 9.72 | 9.72 mg/l |
| 27 Aug 2025, 11:45 | 7.98 | 7.98 mg/l |
| 6 Aug 2025, 16:54 | 8.48 | 8.48 mg/l |
| 17 Jul 2025, 13:17 | 9.02 | 9.02 mg/l |
| 19 Jun 2025, 10:10 | 8.97 | 8.97 mg/l |
| 11 Apr 2025, 11:28 | 12.3 | 12.3 mg/l |
| 25 Mar 2025, 12:05 | 11.5 | 11.5 mg/l |
| 26 Feb 2025, 11:17 | 12.3 | 12.3 mg/l |
| 29 Jan 2025, 11:37 | 12 | 12 mg/l |
Water temperature
code 0076 · °C
16.5 °C
Sampled 21 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 15:56 | 16.5 | 16.5 °C |
| 6 May 2026, 13:09 | 13.5 | 13.5 °C |
| 22 Apr 2026, 14:29 | 12.6 | 12.6 °C |
| 7 Apr 2026, 13:28 | 12.2 | 12.2 °C |
| 23 Mar 2026, 12:17 | 9.4 | 9.4 °C |
| 10 Mar 2026, 14:51 | 9.4 | 9.4 °C |
| 23 Feb 2026, 13:04 | 9.1 | 9.1 °C |
| 5 Feb 2026, 12:48 | 7.6 | 7.6 °C |
| 22 Jan 2026, 13:04 | 8.2 | 8.2 °C |
| 2 Jan 2026, 12:50 | 5.2 | 5.2 °C |
| 17 Dec 2025, 13:43 | 8.3 | 8.3 °C |
| 9 Dec 2025, 12:12 | 10.2 | 10.2 °C |
| 25 Nov 2025, 13:49 | 6.4 | 6.4 °C |
| 11 Nov 2025, 09:11 | 11.1 | 11.1 °C |
| 28 Oct 2025, 10:00 | 12 | 12 °C |
| 25 Sep 2025, 15:42 | 13.5 | 13.5 °C |
| 27 Aug 2025, 11:45 | 16.2 | 16.2 °C |
| 6 Aug 2025, 16:54 | 16.8 | 16.8 °C |
| 17 Jul 2025, 13:17 | 18.9 | 18.9 °C |
| 19 Jun 2025, 10:10 | 16.4 | 16.4 °C |
| 11 Apr 2025, 11:28 | 9.1 | 9.1 °C |
| 25 Mar 2025, 12:05 | 9.6 | 9.6 °C |
| 26 Feb 2025, 11:17 | 6.1 | 6.1 °C |
| 29 Jan 2025, 11:37 | 6.2 | 6.2 °C |
pH
code 0061
8.03
Sampled 21 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 15:56 | 8.03 | 8.03 |
| 6 May 2026, 13:09 | 8.15 | 8.15 |
| 22 Apr 2026, 14:29 | 7.98 | 7.98 |
| 7 Apr 2026, 13:28 | 7.96 | 7.96 |
| 23 Mar 2026, 12:17 | 8.14 | 8.14 |
| 10 Mar 2026, 14:51 | 8.04 | 8.04 |
| 23 Feb 2026, 13:04 | 7.9 | 7.9 |
| 5 Feb 2026, 12:48 | 7.74 | 7.74 |
| 22 Jan 2026, 13:04 | 7.75 | 7.75 |
| 2 Jan 2026, 12:50 | 7.9 | 7.9 |
| 17 Dec 2025, 13:43 | 7.92 | 7.92 |
| 9 Dec 2025, 12:12 | 7.62 | 7.62 |
| 25 Nov 2025, 13:49 | 8.02 | 8.02 |
| 11 Nov 2025, 09:11 | 7.74 | 7.74 |
| 28 Oct 2025, 10:00 | 7.63 | 7.63 |
| 25 Sep 2025, 15:42 | 7.91 | 7.91 |
| 27 Aug 2025, 11:45 | 7.81 | 7.81 |
| 6 Aug 2025, 16:54 | 7.82 | 7.82 |
| 17 Jul 2025, 13:17 | 7.74 | 7.74 |
| 19 Jun 2025, 10:10 | 7.58 | 7.58 |
| 11 Apr 2025, 11:28 | 7.89 | 7.89 |
| 25 Mar 2025, 12:05 | 8.08 | 8.08 |
| 26 Feb 2025, 11:17 | 7.81 | 7.81 |
| 29 Jan 2025, 11:37 | 7.76 | 7.76 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.12 mg/l
Sampled 21 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 15:56 | 0.12 | 0.12 mg/l |
| 6 May 2026, 13:09 | 0.17 | 0.17 mg/l |
| 22 Apr 2026, 14:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Mar 2026, 12:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Mar 2026, 14:51 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Feb 2026, 13:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Feb 2026, 12:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Jan 2026, 13:04 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jan 2026, 12:50 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Dec 2025, 13:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Dec 2025, 12:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Nov 2025, 13:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Nov 2025, 09:11 | 0.059 | 0.059 mg/l |
| 28 Oct 2025, 10:00 | 0.15 | 0.15 mg/l |
| 25 Sep 2025, 15:42 | 0.28 | 0.28 mg/l |
| 27 Aug 2025, 11:45 | 0.83 | 0.83 mg/l |
| 6 Aug 2025, 16:54 | 0.77 | 0.77 mg/l |
| 17 Jul 2025, 13:17 | 0.22 | 0.22 mg/l |
| 19 Jun 2025, 10:10 | 0.2 | 0.2 mg/l |
| 11 Apr 2025, 11:28 | 0.045 | 0.045 mg/l |
| 25 Mar 2025, 12:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 Feb 2025, 11:17 | 0.095 | 0.095 mg/l |
| 29 Jan 2025, 11:37 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
3.86 mg/l
Sampled 21 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 15:56 | 3.86 | 3.86 mg/l |
| 6 May 2026, 13:09 | 3.78 | 3.78 mg/l |
| 22 Apr 2026, 14:29 | 3.69 | 3.69 mg/l |
| 23 Mar 2026, 12:17 | 5.5 | 5.5 mg/l |
| 10 Mar 2026, 14:51 | 6.99 | 6.99 mg/l |
| 23 Feb 2026, 13:04 | 6.89 | 6.89 mg/l |
| 5 Feb 2026, 12:48 | 9.08 | 9.08 mg/l |
| 22 Jan 2026, 13:04 | 9.59 | 9.59 mg/l |
| 2 Jan 2026, 12:50 | 13 | 13 mg/l |
| 17 Dec 2025, 13:43 | 13 | 13 mg/l |
| 9 Dec 2025, 12:12 | 12 | 12 mg/l |
| 25 Nov 2025, 13:49 | 13 | 13 mg/l |
| 11 Nov 2025, 09:11 | 1.88 | 1.88 mg/l |
| 28 Oct 2025, 10:00 | 1.69 | 1.69 mg/l |
| 25 Sep 2025, 15:42 | 3.38 | 3.38 mg/l |
| 27 Aug 2025, 11:45 | 2.35 | 2.35 mg/l |
| 6 Aug 2025, 16:54 | 3.25 | 3.25 mg/l |
| 17 Jul 2025, 13:17 | 3.73 | 3.73 mg/l |
| 19 Jun 2025, 10:10 | 3.55 | 3.55 mg/l |
| 11 Apr 2025, 11:28 | 3.39 | 3.39 mg/l |
| 25 Mar 2025, 12:05 | 4.19 | 4.19 mg/l |
| 26 Feb 2025, 11:17 | 1.49 | 1.49 mg/l |
| 29 Jan 2025, 11:37 | 5.29 | 5.29 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.089 mg/l
Sampled 21 May 2026, 4 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 15:56 | 0.089 | 0.089 mg/l |
| 6 May 2026, 13:09 | 0.11 | 0.11 mg/l |
| 22 Apr 2026, 14:29 | 0.12 | 0.12 mg/l |
| 23 Mar 2026, 12:17 | 0.09 | 0.09 mg/l |
| 10 Mar 2026, 14:51 | 0.075 | 0.075 mg/l |
| 23 Feb 2026, 13:04 | 0.061 | 0.061 mg/l |
| 5 Feb 2026, 12:48 | 0.06 | 0.06 mg/l |
| 22 Jan 2026, 13:04 | 0.072 | 0.072 mg/l |
| 2 Jan 2026, 12:50 | 0.084 | 0.084 mg/l |
| 17 Dec 2025, 13:43 | 0.061 | 0.061 mg/l |
| 9 Dec 2025, 12:12 | 0.098 | 0.098 mg/l |
| 25 Nov 2025, 13:49 | 0.093 | 0.093 mg/l |
| 11 Nov 2025, 09:11 | 0.087 | 0.087 mg/l |
| 28 Oct 2025, 10:00 | 0.11 | 0.11 mg/l |
| 25 Sep 2025, 15:42 | 0.091 | 0.091 mg/l |
| 27 Aug 2025, 11:45 | 0.16 | 0.16 mg/l |
| 6 Aug 2025, 16:54 | 0.16 | 0.16 mg/l |
| 17 Jul 2025, 13:17 | 0.049 | 0.049 mg/l |
| 19 Jun 2025, 10:10 | 0.074 | 0.074 mg/l |
| 11 Apr 2025, 11:28 | 0.16 | 0.16 mg/l |
| 25 Mar 2025, 12:05 | 0.1 | 0.1 mg/l |
| 26 Feb 2025, 11:17 | 0.093 | 0.093 mg/l |
| 29 Jan 2025, 11:37 | 0.075 | 0.075 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
670 µS/cm
Sampled 21 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 21 May 2026, 15:56 | 670 | 670 µS/cm |
| 6 May 2026, 13:09 | 674 | 674 µS/cm |
| 22 Apr 2026, 14:29 | 637 | 637 µS/cm |
| 7 Apr 2026, 13:28 | 608 | 608 µS/cm |
| 23 Mar 2026, 12:17 | 560 | 560 µS/cm |
| 10 Mar 2026, 14:51 | 528 | 528 µS/cm |
| 23 Feb 2026, 13:04 | 447 | 447 µS/cm |
| 5 Feb 2026, 12:48 | 451 | 451 µS/cm |
| 22 Jan 2026, 13:04 | 428 | 428 µS/cm |
| 2 Jan 2026, 12:50 | 577 | 577 µS/cm |
| 17 Dec 2025, 13:43 | 494 | 494 µS/cm |
| 9 Dec 2025, 12:12 | 428 | 428 µS/cm |
| 25 Nov 2025, 13:49 | 595 | 595 µS/cm |
| 11 Nov 2025, 09:11 | 571 | 571 µS/cm |
| 28 Oct 2025, 10:00 | 517 | 517 µS/cm |
| 25 Sep 2025, 15:42 | 598 | 598 µS/cm |
| 27 Aug 2025, 11:45 | 601 | 601 µS/cm |
| 6 Aug 2025, 16:54 | 607 | 607 µS/cm |
| 17 Jul 2025, 13:17 | 620 | 620 µS/cm |
| 19 Jun 2025, 10:10 | 666 | 666 µS/cm |
| 11 Apr 2025, 11:28 | 620 | 620 µS/cm |
| 25 Mar 2025, 12:05 | 592 | 592 µS/cm |
| 26 Feb 2025, 11:17 | 226 | 226 µS/cm |
| 29 Jan 2025, 11:37 | 437 | 437 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 | 24 | Jan 2025 – May 2026 | 95.9% 21 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 24 | Jan 2025 – May 2026 | 9.34 mg/l 21 May 2026 |
| Temperature of Water 0076 | River water | 24 | Jan 2025 – May 2026 | 16.5 °C 21 May 2026 |
| pH 0061 | River water | 24 | Jan 2025 – May 2026 | 8.03 21 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Jan 2025 – May 2026 | 0.12 mg/l 21 May 2026 |
| Nitrate as N 0117 | River water | 23 | Jan 2025 – May 2026 | 3.86 mg/l 21 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Jan 2025 – May 2026 | 0.089 mg/l 21 May 2026 |
| Conductivity at 25 C 0077 | River water | 24 | Jan 2025 – May 2026 | 670 µS/cm 21 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Jan 2025 – May 2026 | 250 mg/l 21 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 23 | Jan 2025 – May 2026 | 0.00351 mg/l 21 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Jan 2025 – May 2026 | 1.4 mg/l 21 May 2026 |
| Nitrite as N 0118 | River water | 23 | Jan 2025 – May 2026 | 0.04 mg/l 21 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Jan 2025 – May 2026 | 3.9 mg/l 21 May 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.