Astley Brook at Mort Lane
EA name: ASTLEY BROOK AT MORT LANE (also listed as “ASTLEY BROOK AT MORT LANE, ABOVE CONFLUENCE WITH WORSLEY WWTW TRIBUTARY”)
Environment Agency sampling point NW-88002484 · 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
- 20 Mar 2025, 15:0218 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
- 18 since 24 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 371756, 402062As published, to the nearest 1 m. Open in a map
- River, by its own name
- Astley Brook
- River, by the map
- Honksford BrookOn a small stream traced into the river its name gives, 19 m from the line.
- Next gauge downstream
- Size Bridge, Tyldesley On the Ellenor Brook · 3.4 km along the river
- Why it was sampled
- Monitoring (national agency policy) (18 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
97.6%
Sampled 20 Mar 2025, 18 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2025, 15:02 | 97.6 | 97.6% |
| 26 Feb 2025, 09:34 | 98 | 98% |
| 20 Jan 2025, 10:50 | 94.4 | 94.4% |
| 2 Dec 2024, 12:21 | 94.7 | 94.7% |
| 19 Nov 2024, 10:24 | 93.9 | 93.9% |
| 21 Oct 2024, 10:05 | 93.3 | 93.3% |
| 18 Sep 2024, 14:00 | 93.5 | 93.5% |
| 21 Aug 2024, 11:50 | 91.3 | 91.3% |
| 18 Jul 2024, 08:20 | 91.7 | 91.7% |
| 21 Jun 2024, 10:22 | 91 | 91% |
| 15 May 2024, 10:01 | 89.4 | 89.4% |
| 15 Apr 2024, 12:03 | 93.9 | 93.9% |
| 19 Mar 2024, 09:25 | 95.3 | 95.3% |
| 19 Feb 2024, 10:51 | 96.6 | 96.6% |
| 17 Jan 2024, 14:20 | 96.3 | 96.3% |
| 5 Dec 2023, 12:05 | 92.4 | 92.4% |
| 22 Nov 2023, 10:48 | 95.3 | 95.3% |
| 24 Oct 2023, 12:56 | 96 | 96% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.7 mg/l
Sampled 20 Mar 2025, 18 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2025, 15:02 | 10.7 | 10.7 mg/l |
| 26 Feb 2025, 09:34 | 12.1 | 12.1 mg/l |
| 20 Jan 2025, 10:50 | 11.7 | 11.7 mg/l |
| 2 Dec 2024, 12:21 | 10.8 | 10.8 mg/l |
| 19 Nov 2024, 10:24 | 11.1 | 11.1 mg/l |
| 21 Oct 2024, 10:05 | 10.1 | 10.1 mg/l |
| 18 Sep 2024, 14:00 | 9.42 | 9.42 mg/l |
| 21 Aug 2024, 11:50 | 9.34 | 9.34 mg/l |
| 18 Jul 2024, 08:20 | 9.43 | 9.43 mg/l |
| 21 Jun 2024, 10:22 | 9.17 | 9.17 mg/l |
| 15 May 2024, 10:01 | 9.48 | 9.48 mg/l |
| 15 Apr 2024, 12:03 | 11 | 11 mg/l |
| 19 Mar 2024, 09:25 | 10.8 | 10.8 mg/l |
| 19 Feb 2024, 10:51 | 11.1 | 11.1 mg/l |
| 17 Jan 2024, 14:20 | 12.2 | 12.2 mg/l |
| 5 Dec 2023, 12:05 | 11.1 | 11.1 mg/l |
| 22 Nov 2023, 10:48 | 10.7 | 10.7 mg/l |
| 24 Oct 2023, 12:56 | 9.76 | 9.76 mg/l |
Water temperature
code 0076 · °C
11.3 °C
Sampled 20 Mar 2025, 18 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2025, 15:02 | 11.3 | 11.3 °C |
| 26 Feb 2025, 09:34 | 6.3 | 6.3 °C |
| 20 Jan 2025, 10:50 | 6.2 | 6.2 °C |
| 2 Dec 2024, 12:21 | 9.3 | 9.3 °C |
| 19 Nov 2024, 10:24 | 8.1 | 8.1 °C |
| 21 Oct 2024, 10:05 | 11.9 | 11.9 °C |
| 18 Sep 2024, 14:00 | 14.9 | 14.9 °C |
| 21 Aug 2024, 11:50 | 14.2 | 14.2 °C |
| 18 Jul 2024, 08:20 | 14 | 14 °C |
| 21 Jun 2024, 10:22 | 14.9 | 14.9 °C |
| 15 May 2024, 10:01 | 12.6 | 12.6 °C |
| 15 Apr 2024, 12:03 | 8.2 | 8.2 °C |
| 19 Mar 2024, 09:25 | 9.8 | 9.8 °C |
| 19 Feb 2024, 10:51 | 9 | 9 °C |
| 17 Jan 2024, 14:20 | 5.4 | 5.4 °C |
| 5 Dec 2023, 12:05 | 7.3 | 7.3 °C |
| 22 Nov 2023, 10:48 | 10.2 | 10.2 °C |
| 24 Oct 2023, 12:56 | 14.5 | 14.5 °C |
pH
code 0061
7.81
Sampled 20 Mar 2025, 18 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2025, 15:02 | 7.81 | 7.81 |
| 26 Feb 2025, 09:34 | 7.57 | 7.57 |
| 20 Jan 2025, 10:50 | 7.63 | 7.63 |
| 2 Dec 2024, 12:21 | 7.34 | 7.34 |
| 19 Nov 2024, 10:24 | 7.56 | 7.56 |
| 21 Oct 2024, 10:05 | 7.61 | 7.61 |
| 18 Sep 2024, 14:00 | 7.9 | 7.9 |
| 21 Aug 2024, 11:50 | 7.86 | 7.86 |
| 18 Jul 2024, 08:20 | 7.66 | 7.66 |
| 21 Jun 2024, 10:22 | 7.75 | 7.75 |
| 15 May 2024, 10:01 | 7.75 | 7.75 |
| 15 Apr 2024, 12:03 | 7.41 | 7.41 |
| 19 Mar 2024, 09:25 | 7.51 | 7.51 |
| 19 Feb 2024, 10:51 | 7.59 | 7.59 |
| 17 Jan 2024, 14:20 | 7.85 | 7.85 |
| 5 Dec 2023, 12:05 | 7.48 | 7.48 |
| 22 Nov 2023, 10:48 | 7.48 | 7.48 |
| 24 Oct 2023, 12:56 | 7.66 | 7.66 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.48 mg/l
Sampled 20 Mar 2025, 18 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2025, 15:02 | 0.48 | 0.48 mg/l |
| 26 Feb 2025, 09:34 | 0.17 | 0.17 mg/l |
| 20 Jan 2025, 10:50 | 0.29 | 0.29 mg/l |
| 2 Dec 2024, 12:21 | 0.083 | 0.083 mg/l |
| 19 Nov 2024, 10:24 | 0.12 | 0.12 mg/l |
| 21 Oct 2024, 10:05 | 0.11 | 0.11 mg/l |
| 18 Sep 2024, 14:00 | 0.11 | 0.11 mg/l |
| 21 Aug 2024, 11:50 | 0.12 | 0.12 mg/l |
| 18 Jul 2024, 08:20 | 0.13 | 0.13 mg/l |
| 21 Jun 2024, 10:22 | 0.43 | 0.43 mg/l |
| 15 May 2024, 10:01 | 0.12 | 0.12 mg/l |
| 15 Apr 2024, 12:03 | 0.14 | 0.14 mg/l |
| 19 Mar 2024, 09:25 | 0.17 | 0.17 mg/l |
| 19 Feb 2024, 10:51 | 0.11 | 0.11 mg/l |
| 17 Jan 2024, 14:20 | 0.48 | 0.48 mg/l |
| 5 Dec 2023, 12:05 | 0.12 | 0.12 mg/l |
| 22 Nov 2023, 10:48 | 0.11 | 0.11 mg/l |
| 24 Oct 2023, 12:56 | 0.031 | 0.031 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.759 mg/l
Sampled 20 Mar 2025, 18 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2025, 15:02 | 0.759 | 0.759 mg/l |
| 26 Feb 2025, 09:34 | 0.62 | 0.62 mg/l |
| 20 Jan 2025, 10:50 | 0.824 | 0.824 mg/l |
| 2 Dec 2024, 12:21 | 0.98 | 0.98 mg/l |
| 19 Nov 2024, 10:24 | 1.67 | 1.67 mg/l |
| 21 Oct 2024, 10:05 | 1.26 | 1.26 mg/l |
| 18 Sep 2024, 14:00 | 1.67 | 1.67 mg/l |
| 21 Aug 2024, 11:50 | 1.07 | 1.07 mg/l |
| 18 Jul 2024, 08:20 | 1.47 | 1.47 mg/l |
| 21 Jun 2024, 10:22 | 1.13 | 1.13 mg/l |
| 15 May 2024, 10:01 | 1.27 | 1.27 mg/l |
| 15 Apr 2024, 12:03 | 0.577 | 0.577 mg/l |
| 19 Mar 2024, 09:25 | 0.503 | 0.503 mg/l |
| 19 Feb 2024, 10:51 | 1.37 | 1.37 mg/l |
| 17 Jan 2024, 14:20 | 0.94 | 0.94 mg/l |
| 5 Dec 2023, 12:05 | 1.58 | 1.58 mg/l |
| 22 Nov 2023, 10:48 | 1.08 | 1.08 mg/l |
| 24 Oct 2023, 12:56 | 17 | 17 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.01 mg/l (not detected above this)
Sampled 20 Mar 2025, 18 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2025, 15:02 | <0.01 | below 0.01 mg/l (not detected above this) |
| 26 Feb 2025, 09:34 | 0.027 | 0.027 mg/l |
| 20 Jan 2025, 10:50 | <0.01 | below 0.01 mg/l (not detected above this) |
| 2 Dec 2024, 12:21 | 0.036 | 0.036 mg/l |
| 19 Nov 2024, 10:24 | 0.016 | 0.016 mg/l |
| 21 Oct 2024, 10:05 | <0.01 | below 0.01 mg/l (not detected above this) |
| 18 Sep 2024, 14:00 | 0.035 | 0.035 mg/l |
| 21 Aug 2024, 11:50 | 0.014 | 0.014 mg/l |
| 18 Jul 2024, 08:20 | 0.012 | 0.012 mg/l |
| 21 Jun 2024, 10:22 | 0.02 | 0.02 mg/l |
| 15 May 2024, 10:01 | <0.01 | below 0.01 mg/l (not detected above this) |
| 15 Apr 2024, 12:03 | 0.034 | 0.034 mg/l |
| 19 Mar 2024, 09:25 | <0.01 | below 0.01 mg/l (not detected above this) |
| 19 Feb 2024, 10:51 | 0.012 | 0.012 mg/l |
| 17 Jan 2024, 14:20 | 0.057 | 0.057 mg/l |
| 5 Dec 2023, 12:05 | 0.054 | 0.054 mg/l |
| 22 Nov 2023, 10:48 | <0.01 | below 0.01 mg/l (not detected above this) |
| 24 Oct 2023, 12:56 | 0.21 | 0.21 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
814 µS/cm
Sampled 20 Mar 2025, 18 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 20 Mar 2025, 15:02 | 814 | 814 µS/cm |
| 26 Feb 2025, 09:34 | 355 | 355 µS/cm |
| 20 Jan 2025, 10:50 | 692 | 692 µS/cm |
| 2 Dec 2024, 12:21 | 280 | 280 µS/cm |
| 19 Nov 2024, 10:24 | 1104 | 1104 µS/cm |
| 21 Oct 2024, 10:05 | 560 | 560 µS/cm |
| 18 Sep 2024, 14:00 | 717 | 717 µS/cm |
| 21 Aug 2024, 11:50 | 763 | 763 µS/cm |
| 18 Jul 2024, 08:20 | 648 | 648 µS/cm |
| 21 Jun 2024, 10:22 | 773 | 773 µS/cm |
| 15 May 2024, 10:01 | 704 | 704 µS/cm |
| 15 Apr 2024, 12:03 | 314 | 314 µS/cm |
| 19 Mar 2024, 09:25 | 233 | 233 µS/cm |
| 19 Feb 2024, 10:51 | 468 | 468 µS/cm |
| 17 Jan 2024, 14:20 | 769 | 769 µS/cm |
| 5 Dec 2023, 12:05 | 405 | 405 µS/cm |
| 22 Nov 2023, 10:48 | 541 | 541 µS/cm |
| 24 Oct 2023, 12:56 | 535 | 535 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 | 18 | Oct 2023 – Mar 2025 | 97.6% 20 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 18 | Oct 2023 – Mar 2025 | 10.7 mg/l 20 Mar 2025 |
| Temperature of Water 0076 | River water | 18 | Oct 2023 – Mar 2025 | 11.3 °C 20 Mar 2025 |
| pH 0061 | River water | 18 | Oct 2023 – Mar 2025 | 7.81 20 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 18 | Oct 2023 – Mar 2025 | 0.48 mg/l 20 Mar 2025 |
| Nitrate as N 0117 | River water | 18 | Oct 2023 – Mar 2025 | 0.759 mg/l 20 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Oct 2023 – Mar 2025 | below 0.01 mg/l 20 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 18 | Oct 2023 – Mar 2025 | 814 µS/cm 20 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 17 | Oct 2023 – Mar 2025 | 160 mg/l 20 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 18 | Oct 2023 – Mar 2025 | 0.00626 mg/l 20 Mar 2025 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – Mar 2025 | below 2 mg/l 20 Mar 2025 |
| Nitrite as N 0118 | River water | 18 | Oct 2023 – Mar 2025 | 0.031 mg/l 20 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Oct 2023 – Mar 2025 | 0.79 mg/l 20 Mar 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.