Thorley Brook Thorley Bridge
EA name: THORLEY BROOK THORLEY BRIDGE (also listed as “THORLEY BROOK AT THORLEY BRIDGE”)
Environment Agency sampling point SO-Y0004333 · 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
- 8 Sep 2026, 11:3923 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 38 since 25 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 436450, 89450As published, to the nearest 10 m. Open in a map
- River, by its own name
- Thorley Brook
- River, by the map
- Thorley BrookPlaced on the river its name gives, 3 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Why it was sampled
- Monitoring (national agency policy) (38 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
73.3%
Sampled 8 Sep 2026, 23 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 11:39 | 73.3 | 73.3% |
| 2 Jul 2026, 11:12 | 76.3 | 76.3% |
| 6 May 2026, 11:26 | 82.9 | 82.9% |
| 16 Mar 2026, 10:52 | 80.9 | 80.9% |
| 14 Jan 2026, 10:52 | 80.3 | 80.3% |
| 11 Nov 2025, 12:26 | 63.1 | 63.1% |
| 9 Sep 2025, 11:03 | 73.8 | 73.8% |
| 10 Jul 2025, 10:48 | 61 | 61% |
| 22 May 2025, 11:20 | 79.4 | 79.4% |
| 18 Mar 2025, 10:26 | 96.5 | 96.5% |
| 12 Feb 2025, 10:16 | 89 | 89% |
| 6 Jan 2025, 10:18 | 74.7 | 74.7% |
| 10 Dec 2024, 10:21 | 82 | 82% |
| 21 Nov 2024, 10:51 | 80.8 | 80.8% |
| 24 Oct 2024, 10:29 | 64.3 | 64.3% |
| 20 Sep 2024, 09:40 | 70.2 | 70.2% |
| 29 Aug 2024, 09:53 | 47.8 | 47.8% |
| 26 Jul 2024, 12:21 | 73.8 | 73.8% |
| 25 Jun 2024, 11:59 | 74.5 | 74.5% |
| 31 May 2024, 11:19 | 79.9 | 79.9% |
| 18 Apr 2024, 09:03 | 86.6 | 86.6% |
| 18 Mar 2024, 10:06 | 81.1 | 81.1% |
| 20 Feb 2024, 10:19 | 84.5 | 84.5% |
| 24 Jan 2024, 10:27 | 74.3 | 74.3% |
| 14 Dec 2023, 09:23 | 83.5 | 83.5% |
| 20 Nov 2023, 11:08 | 70 | 70% |
| 25 Oct 2023, 10:44 | 80.9 | 80.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
6.91 mg/l
Sampled 8 Sep 2026, 23 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 11:39 | 6.91 | 6.91 mg/l |
| 2 Jul 2026, 11:12 | 7.23 | 7.23 mg/l |
| 6 May 2026, 11:26 | 8.95 | 8.95 mg/l |
| 16 Mar 2026, 10:52 | 9.18 | 9.18 mg/l |
| 14 Jan 2026, 10:52 | 9.88 | 9.88 mg/l |
| 11 Nov 2025, 12:26 | 6.68 | 6.68 mg/l |
| 9 Sep 2025, 11:03 | 7.45 | 7.45 mg/l |
| 10 Jul 2025, 10:48 | 5.89 | 5.89 mg/l |
| 22 May 2025, 11:20 | 8.38 | 8.38 mg/l |
| 18 Mar 2025, 10:26 | 11.4 | 11.4 mg/l |
| 12 Feb 2025, 10:16 | 10.6 | 10.6 mg/l |
| 6 Jan 2025, 10:18 | 8.64 | 8.64 mg/l |
| 10 Dec 2024, 10:21 | 9.49 | 9.49 mg/l |
| 21 Nov 2024, 10:51 | 9.94 | 9.94 mg/l |
| 24 Oct 2024, 10:29 | 6.8 | 6.8 mg/l |
| 20 Sep 2024, 09:40 | 6.93 | 6.93 mg/l |
| 29 Aug 2024, 09:53 | 4.69 | 4.69 mg/l |
| 26 Jul 2024, 12:21 | 7.14 | 7.14 mg/l |
| 25 Jun 2024, 11:59 | 7.3 | 7.3 mg/l |
| 31 May 2024, 11:19 | 8.11 | 8.11 mg/l |
| 18 Apr 2024, 09:03 | 9.95 | 9.95 mg/l |
| 18 Mar 2024, 10:06 | 8.97 | 8.97 mg/l |
| 20 Feb 2024, 10:19 | 9.68 | 9.68 mg/l |
| 24 Jan 2024, 10:27 | 8.59 | 8.59 mg/l |
| 14 Dec 2023, 09:23 | 9.95 | 9.95 mg/l |
| 20 Nov 2023, 11:08 | 7.65 | 7.65 mg/l |
| 25 Oct 2023, 10:44 | 8.66 | 8.66 mg/l |
Water temperature
code 0076 · °C
18.1 °C
Sampled 8 Sep 2026, 23 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 11:39 | 18.1 | 18.1 °C |
| 2 Jul 2026, 11:12 | 17.8 | 17.8 °C |
| 6 May 2026, 11:26 | 11.8 | 11.8 °C |
| 16 Mar 2026, 10:52 | 9.7 | 9.7 °C |
| 14 Jan 2026, 10:52 | 6.4 | 6.4 °C |
| 11 Nov 2025, 12:26 | 12.7 | 12.7 °C |
| 9 Sep 2025, 11:03 | 14.8 | 14.8 °C |
| 10 Jul 2025, 10:48 | 16.9 | 16.9 °C |
| 22 May 2025, 11:20 | 12.8 | 12.8 °C |
| 18 Mar 2025, 10:26 | 8.1 | 8.1 °C |
| 12 Feb 2025, 10:16 | 7.7 | 7.7 °C |
| 6 Jan 2025, 10:18 | 8.9 | 8.9 °C |
| 10 Dec 2024, 10:21 | 8.9 | 8.9 °C |
| 21 Nov 2024, 10:51 | 6.4 | 6.4 °C |
| 24 Oct 2024, 10:29 | 12.7 | 12.7 °C |
| 20 Sep 2024, 09:40 | 15.9 | 15.9 °C |
| 29 Aug 2024, 09:53 | 16.2 | 16.2 °C |
| 26 Jul 2024, 12:21 | 16.8 | 16.8 °C |
| 25 Jun 2024, 11:59 | 16.2 | 16.2 °C |
| 31 May 2024, 11:19 | 14.6 | 14.6 °C |
| 18 Apr 2024, 09:03 | 9.2 | 9.2 °C |
| 18 Mar 2024, 10:06 | 10.8 | 10.8 °C |
| 20 Feb 2024, 10:19 | 9.3 | 9.3 °C |
| 24 Jan 2024, 10:27 | 8.9 | 8.9 °C |
| 14 Dec 2023, 09:23 | 7.7 | 7.7 °C |
| 20 Nov 2023, 11:08 | 11.3 | 11.3 °C |
| 25 Oct 2023, 10:44 | 12.2 | 12.2 °C |
pH
code 0061
7.67
Sampled 8 Sep 2026, 23 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 11:39 | 7.67 | 7.67 |
| 2 Jul 2026, 11:12 | 7.8 | 7.8 |
| 6 May 2026, 11:26 | 8.1 | 8.1 |
| 16 Mar 2026, 10:52 | 7.89 | 7.89 |
| 14 Jan 2026, 10:52 | 7.65 | 7.65 |
| 11 Nov 2025, 12:26 | 7.9 | 7.9 |
| 9 Sep 2025, 11:03 | 8.49 | 8.49 |
| 10 Jul 2025, 10:48 | 7.95 | 7.95 |
| 22 May 2025, 11:20 | 7.93 | 7.93 |
| 18 Mar 2025, 10:26 | 8.1 | 8.1 |
| 12 Feb 2025, 10:16 | 7.82 | 7.82 |
| 6 Jan 2025, 10:18 | 7.83 | 7.83 |
| 10 Dec 2024, 10:21 | 7.76 | 7.76 |
| 21 Nov 2024, 10:51 | 7.89 | 7.89 |
| 24 Oct 2024, 10:29 | 7.75 | 7.75 |
| 20 Sep 2024, 09:40 | 7.99 | 7.99 |
| 29 Aug 2024, 09:53 | 7.68 | 7.68 |
| 26 Jul 2024, 12:21 | 8.22 | 8.22 |
| 25 Jun 2024, 11:59 | 7.96 | 7.96 |
| 31 May 2024, 11:19 | 8.04 | 8.04 |
| 18 Apr 2024, 09:03 | 7.56 | 7.56 |
| 18 Mar 2024, 10:06 | 7.44 | 7.44 |
| 20 Feb 2024, 10:19 | 7.67 | 7.67 |
| 24 Jan 2024, 10:27 | 7.81 | 7.81 |
| 14 Dec 2023, 09:23 | 7.66 | 7.66 |
| 20 Nov 2023, 11:08 | 7.56 | 7.56 |
| 25 Oct 2023, 10:44 | 7.95 | 7.95 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 8 Sep 2026, 23 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 11:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Jul 2026, 11:12 | 0.049 | 0.049 mg/l |
| 6 May 2026, 11:26 | 0.079 | 0.079 mg/l |
| 16 Mar 2026, 10:52 | <0.03 | below 0.03 mg/l (not detected above this) |
| 14 Jan 2026, 10:52 | 0.05 | 0.05 mg/l |
| 11 Nov 2025, 12:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Sep 2025, 11:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jul 2025, 10:48 | 0.087 | 0.087 mg/l |
| 22 May 2025, 11:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Mar 2025, 10:26 | 0.036 | 0.036 mg/l |
| 12 Feb 2025, 10:16 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Jan 2025, 10:18 | 0.062 | 0.062 mg/l |
| 10 Dec 2024, 10:21 | 0.03 | 0.03 mg/l |
| 21 Nov 2024, 10:51 | 0.25 | 0.25 mg/l |
| 24 Oct 2024, 10:29 | 0.058 | 0.058 mg/l |
| 20 Sep 2024, 09:40 | 0.044 | 0.044 mg/l |
| 29 Aug 2024, 09:53 | 0.12 | 0.12 mg/l |
| 26 Jul 2024, 12:21 | 0.17 | 0.17 mg/l |
| 25 Jun 2024, 11:59 | 0.057 | 0.057 mg/l |
| 31 May 2024, 11:19 | 0.046 | 0.046 mg/l |
| 18 Apr 2024, 09:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Mar 2024, 10:06 | 0.046 | 0.046 mg/l |
| 20 Feb 2024, 10:19 | 0.034 | 0.034 mg/l |
| 24 Jan 2024, 10:27 | 0.048 | 0.048 mg/l |
| 14 Dec 2023, 09:23 | 0.03 | 0.03 mg/l |
| 20 Nov 2023, 11:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Oct 2023, 10:44 | 0.11 | 0.11 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
2.9 mg/l
Sampled 8 Sep 2026, 23 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 11:39 | 2.9 | 2.9 mg/l |
| 2 Jul 2026, 11:12 | 6.48 | 6.48 mg/l |
| 6 May 2026, 11:26 | 9.93 | 9.93 mg/l |
| 16 Mar 2026, 10:52 | 8.39 | 8.39 mg/l |
| 14 Jan 2026, 10:52 | 2.89 | 2.89 mg/l |
| 11 Nov 2025, 12:26 | 6.49 | 6.49 mg/l |
| 9 Sep 2025, 11:03 | 3.4 | 3.4 mg/l |
| 10 Jul 2025, 10:48 | 6.08 | 6.08 mg/l |
| 22 May 2025, 11:20 | 8.86 | 8.86 mg/l |
| 18 Mar 2025, 10:26 | 9.98 | 9.98 mg/l |
| 12 Feb 2025, 10:16 | 9.98 | 9.98 mg/l |
| 6 Jan 2025, 10:18 | 3.48 | 3.48 mg/l |
| 10 Dec 2024, 10:21 | 9.97 | 9.97 mg/l |
| 21 Nov 2024, 10:51 | 8.54 | 8.54 mg/l |
| 24 Oct 2024, 10:29 | 7.47 | 7.47 mg/l |
| 20 Sep 2024, 09:40 | 6.29 | 6.29 mg/l |
| 29 Aug 2024, 09:53 | 3.26 | 3.26 mg/l |
| 26 Jul 2024, 12:21 | 5.41 | 5.41 mg/l |
| 25 Jun 2024, 11:59 | 9.35 | 9.35 mg/l |
| 31 May 2024, 11:19 | 9.45 | 9.45 mg/l |
| 18 Apr 2024, 09:03 | 9.86 | 9.86 mg/l |
| 18 Mar 2024, 10:06 | 5.37 | 5.37 mg/l |
| 20 Feb 2024, 10:19 | 7.29 | 7.29 mg/l |
| 24 Jan 2024, 10:27 | 4.38 | 4.38 mg/l |
| 14 Dec 2023, 09:23 | 7.77 | 7.77 mg/l |
| 20 Nov 2023, 11:08 | 7.57 | 7.57 mg/l |
| 25 Oct 2023, 10:44 | 1.78 | 1.78 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.49 mg/l
Sampled 8 Sep 2026, 23 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 11:39 | 0.49 | 0.49 mg/l |
| 2 Jul 2026, 11:12 | 0.37 | 0.37 mg/l |
| 6 May 2026, 11:26 | 0.25 | 0.25 mg/l |
| 16 Mar 2026, 10:52 | 0.069 | 0.069 mg/l |
| 14 Jan 2026, 10:52 | 0.11 | 0.11 mg/l |
| 11 Nov 2025, 12:26 | 0.12 | 0.12 mg/l |
| 9 Sep 2025, 11:03 | 0.37 | 0.37 mg/l |
| 10 Jul 2025, 10:48 | 0.69 | 0.69 mg/l |
| 22 May 2025, 11:20 | 0.43 | 0.43 mg/l |
| 18 Mar 2025, 10:26 | 0.077 | 0.077 mg/l |
| 12 Feb 2025, 10:16 | 0.057 | 0.057 mg/l |
| 6 Jan 2025, 10:18 | 0.13 | 0.13 mg/l |
| 10 Dec 2024, 10:21 | 0.065 | 0.065 mg/l |
| 21 Nov 2024, 10:51 | 0.15 | 0.15 mg/l |
| 24 Oct 2024, 10:29 | 0.12 | 0.12 mg/l |
| 20 Sep 2024, 09:40 | 0.37 | 0.37 mg/l |
| 29 Aug 2024, 09:53 | 0.45 | 0.45 mg/l |
| 26 Jul 2024, 12:21 | 0.39 | 0.39 mg/l |
| 25 Jun 2024, 11:59 | 0.36 | 0.36 mg/l |
| 31 May 2024, 11:19 | 0.1 | 0.1 mg/l |
| 18 Apr 2024, 09:03 | 0.037 | 0.037 mg/l |
| 18 Mar 2024, 10:06 | 0.05 | 0.05 mg/l |
| 20 Feb 2024, 10:19 | 0.077 | 0.077 mg/l |
| 24 Jan 2024, 10:27 | 0.092 | 0.092 mg/l |
| 14 Dec 2023, 09:23 | 0.091 | 0.091 mg/l |
| 20 Nov 2023, 11:08 | 0.11 | 0.11 mg/l |
| 25 Oct 2023, 10:44 | 0.44 | 0.44 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
432 µS/cm
Sampled 8 Sep 2026, 23 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 8 Sep 2026, 11:39 | 432 | 432 µS/cm |
| 2 Jul 2026, 11:12 | 791 | 791 µS/cm |
| 6 May 2026, 11:26 | 783 | 783 µS/cm |
| 16 Mar 2026, 10:52 | 669 | 669 µS/cm |
| 14 Jan 2026, 10:52 | 469 | 469 µS/cm |
| 11 Nov 2025, 12:26 | 783 | 783 µS/cm |
| 9 Sep 2025, 11:03 | 835 | 835 µS/cm |
| 10 Jul 2025, 10:48 | 627 | 627 µS/cm |
| 22 May 2025, 11:20 | 769 | 769 µS/cm |
| 18 Mar 2025, 10:26 | 731 | 731 µS/cm |
| 12 Feb 2025, 10:16 | 718 | 718 µS/cm |
| 6 Jan 2025, 10:18 | 439 | 439 µS/cm |
| 10 Dec 2024, 10:21 | 711 | 711 µS/cm |
| 21 Nov 2024, 10:51 | 715 | 715 µS/cm |
| 24 Oct 2024, 10:29 | 617 | 617 µS/cm |
| 20 Sep 2024, 09:40 | 816 | 816 µS/cm |
| 29 Aug 2024, 09:53 | 663 | 663 µS/cm |
| 26 Jul 2024, 12:21 | 1179 | 1179 µS/cm |
| 25 Jun 2024, 11:59 | 808 | 808 µS/cm |
| 31 May 2024, 11:19 | 781 | 781 µS/cm |
| 18 Apr 2024, 09:03 | 701 | 701 µS/cm |
| 18 Mar 2024, 10:06 | 599 | 599 µS/cm |
| 20 Feb 2024, 10:19 | 624 | 624 µS/cm |
| 24 Jan 2024, 10:27 | 551 | 551 µS/cm |
| 14 Dec 2023, 09:23 | 616 | 616 µS/cm |
| 20 Nov 2023, 11:08 | 621 | 621 µS/cm |
| 25 Oct 2023, 10:44 | 256 | 256 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 | 27 | Oct 2023 – Sep 2026 | 73.3% 8 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Oct 2023 – Sep 2026 | 6.91 mg/l 8 Sep 2026 |
| Temperature of Water 0076 | River water | 27 | Oct 2023 – Sep 2026 | 18.1 °C 8 Sep 2026 |
| pH 0061 | River water | 27 | Oct 2023 – Sep 2026 | 7.67 8 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 27 | Oct 2023 – Sep 2026 | below 0.03 mg/l 8 Sep 2026 |
| Nitrate as N 0117 | River water | 27 | Oct 2023 – Sep 2026 | 2.9 mg/l 8 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 27 | Oct 2023 – Sep 2026 | 0.49 mg/l 8 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Oct 2023 – Sep 2026 | 432 µS/cm 8 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Oct 2023 – Sep 2026 | 130 mg/l 8 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 27 | Oct 2023 – Sep 2026 | below 0.00047 mg/l 8 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 30 | Feb 2024 – Sep 2026 | below 4 mg/l 8 Sep 2026 |
| Nitrite as N 0118 | River water | 27 | Oct 2023 – Sep 2026 | 0.0048 mg/l 8 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Oct 2023 – Sep 2026 | 2.9 mg/l 8 Sep 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.