Syd Brook above the confluence with River Yarrow
EA name: SYD BROOK PTC RIVER YARROW
Environment Agency sampling point NW-88003172 · 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
- 12 May 2026, 10:575 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 17 Jun 2024 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 350087, 417529As published, to the nearest 1 m. Open in a map
- River, by its own name
- Syd Brook
- River, by the map
- Syd BrookPlaced on the river its name gives, 9 m from the line.
- Next gauge downstream
- Croston On the River Yarrow · 0.6 km along the river
- Nearest gauge upstream
- Eccleston Heskin Bridge On the Syd Brook · 3.9 km along the river
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
104.6%
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 10:57 | 104.6 | 104.6% |
| 16 Apr 2026, 13:02 | 135.8 | 135.8% |
| 5 Mar 2026, 10:55 | 99.6 | 99.6% |
| 6 Feb 2026, 10:29 | 98.7 | 98.7% |
| 8 Jan 2026, 13:47 | 95.9 | 95.9% |
| 11 Dec 2025, 11:27 | 96 | 96% |
| 13 Nov 2025, 11:33 | 96.1 | 96.1% |
| 10 Oct 2025, 11:28 | 95.5 | 95.5% |
| 12 Sep 2025, 12:09 | 91.4 | 91.4% |
| 18 Aug 2025, 11:11 | 95.1 | 95.1% |
| 31 Jul 2025, 11:45 | 92.8 | 92.8% |
| 23 Jun 2025, 12:15 | 106.1 | 106.1% |
| 13 May 2025, 10:06 | 93 | 93% |
| 1 Apr 2025, 08:48 | 94 | 94% |
| 5 Mar 2025, 11:47 | 110 | 110% |
| 5 Feb 2025, 11:26 | 100.1 | 100.1% |
| 22 Jan 2025, 09:54 | 98.8 | 98.8% |
| 3 Dec 2024, 09:48 | 98.6 | 98.6% |
| 18 Nov 2024, 13:26 | 96.6 | 96.6% |
| 15 Oct 2024, 11:46 | 97.2 | 97.2% |
| 17 Sep 2024, 12:25 | 98.9 | 98.9% |
| 22 Aug 2024, 14:59 | 103.5 | 103.5% |
| 19 Jul 2024, 12:05 | 114.5 | 114.5% |
| 17 Jun 2024, 13:00 | 99.5 | 99.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.9 mg/l
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 10:57 | 11.9 | 11.9 mg/l |
| 16 Apr 2026, 13:02 | 14.5 | 14.5 mg/l |
| 5 Mar 2026, 10:55 | 11.7 | 11.7 mg/l |
| 6 Feb 2026, 10:29 | 12.7 | 12.7 mg/l |
| 8 Jan 2026, 13:47 | 12.5 | 12.5 mg/l |
| 11 Dec 2025, 11:27 | 11.4 | 11.4 mg/l |
| 13 Nov 2025, 11:33 | 10.4 | 10.4 mg/l |
| 10 Oct 2025, 11:28 | 10.1 | 10.1 mg/l |
| 12 Sep 2025, 12:09 | 9.76 | 9.76 mg/l |
| 18 Aug 2025, 11:11 | 9.4 | 9.4 mg/l |
| 31 Jul 2025, 11:45 | 9.16 | 9.16 mg/l |
| 23 Jun 2025, 12:15 | 10.5 | 10.5 mg/l |
| 13 May 2025, 10:06 | 9.54 | 9.54 mg/l |
| 1 Apr 2025, 08:48 | 11.1 | 11.1 mg/l |
| 5 Mar 2025, 11:47 | 13.5 | 13.5 mg/l |
| 5 Feb 2025, 11:26 | 12.4 | 12.4 mg/l |
| 22 Jan 2025, 09:54 | 12.6 | 12.6 mg/l |
| 3 Dec 2024, 09:48 | 12.1 | 12.1 mg/l |
| 18 Nov 2024, 13:26 | 11.7 | 11.7 mg/l |
| 15 Oct 2024, 11:46 | 10.9 | 10.9 mg/l |
| 17 Sep 2024, 12:25 | 10.5 | 10.5 mg/l |
| 22 Aug 2024, 14:59 | 10.3 | 10.3 mg/l |
| 19 Jul 2024, 12:05 | 10.9 | 10.9 mg/l |
| 17 Jun 2024, 13:00 | 10.3 | 10.3 mg/l |
Water temperature
code 0076 · °C
9.5 °C
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 10:57 | 9.5 | 9.5 °C |
| 16 Apr 2026, 13:02 | 12.3 | 12.3 °C |
| 5 Mar 2026, 10:55 | 8.4 | 8.4 °C |
| 6 Feb 2026, 10:29 | 4.8 | 4.8 °C |
| 8 Jan 2026, 13:47 | 4.3 | 4.3 °C |
| 11 Dec 2025, 11:27 | 7.9 | 7.9 °C |
| 13 Nov 2025, 11:33 | 11.8 | 11.8 °C |
| 10 Oct 2025, 11:28 | 12.8 | 12.8 °C |
| 12 Sep 2025, 12:09 | 12.3 | 12.3 °C |
| 18 Aug 2025, 11:11 | 15.8 | 15.8 °C |
| 31 Jul 2025, 11:45 | 15.9 | 15.9 °C |
| 23 Jun 2025, 12:15 | 15.8 | 15.8 °C |
| 13 May 2025, 10:06 | 14.1 | 14.1 °C |
| 1 Apr 2025, 08:48 | 8.2 | 8.2 °C |
| 5 Mar 2025, 11:47 | 6.6 | 6.6 °C |
| 5 Feb 2025, 11:26 | 6.1 | 6.1 °C |
| 22 Jan 2025, 09:54 | 5.1 | 5.1 °C |
| 3 Dec 2024, 09:48 | 6.5 | 6.5 °C |
| 18 Nov 2024, 13:26 | 7.1 | 7.1 °C |
| 15 Oct 2024, 11:46 | 10.2 | 10.2 °C |
| 17 Sep 2024, 12:25 | 12.7 | 12.7 °C |
| 22 Aug 2024, 14:59 | 15.3 | 15.3 °C |
| 19 Jul 2024, 12:05 | 17.5 | 17.5 °C |
| 17 Jun 2024, 13:00 | 13.5 | 13.5 °C |
pH
code 0061
8.35
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 10:57 | 8.35 | 8.35 |
| 16 Apr 2026, 13:02 | 8.61 | 8.61 |
| 5 Mar 2026, 10:55 | 8.15 | 8.15 |
| 6 Feb 2026, 10:29 | 8.23 | 8.23 |
| 8 Jan 2026, 13:47 | 7.95 | 7.95 |
| 11 Dec 2025, 11:27 | 7.74 | 7.74 |
| 13 Nov 2025, 11:33 | 7.74 | 7.74 |
| 10 Oct 2025, 11:28 | 8.16 | 8.16 |
| 12 Sep 2025, 12:09 | 8.01 | 8.01 |
| 18 Aug 2025, 11:11 | 8.32 | 8.32 |
| 31 Jul 2025, 11:45 | 8.28 | 8.28 |
| 23 Jun 2025, 12:15 | 8.49 | 8.49 |
| 13 May 2025, 10:06 | 8.14 | 8.14 |
| 1 Apr 2025, 08:48 | 8.18 | 8.18 |
| 5 Mar 2025, 11:47 | 8.24 | 8.24 |
| 5 Feb 2025, 11:26 | 8.14 | 8.14 |
| 22 Jan 2025, 09:54 | 7.92 | 7.92 |
| 3 Dec 2024, 09:48 | 7.75 | 7.75 |
| 18 Nov 2024, 13:26 | 7.95 | 7.95 |
| 15 Oct 2024, 11:46 | 8.05 | 8.05 |
| 17 Sep 2024, 12:25 | 8.23 | 8.23 |
| 22 Aug 2024, 14:59 | 8.33 | 8.33 |
| 19 Jul 2024, 12:05 | 8.28 | 8.28 |
| 17 Jun 2024, 13:00 | 8.3 | 8.3 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 10:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2026, 13:02 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Mar 2026, 10:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Feb 2026, 10:29 | 0.058 | 0.058 mg/l |
| 8 Jan 2026, 13:47 | 0.083 | 0.083 mg/l |
| 11 Dec 2025, 11:27 | 0.042 | 0.042 mg/l |
| 13 Nov 2025, 11:33 | 0.044 | 0.044 mg/l |
| 10 Oct 2025, 11:28 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Sep 2025, 12:09 | 0.15 | 0.15 mg/l |
| 18 Aug 2025, 11:11 | <0.03 | below 0.03 mg/l (not detected above this) |
| 31 Jul 2025, 11:45 | 0.032 | 0.032 mg/l |
| 23 Jun 2025, 12:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 13 May 2025, 10:06 | 0.052 | 0.052 mg/l |
| 1 Apr 2025, 08:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Mar 2025, 11:47 | 0.044 | 0.044 mg/l |
| 5 Feb 2025, 11:26 | 0.18 | 0.18 mg/l |
| 22 Jan 2025, 09:54 | 0.26 | 0.26 mg/l |
| 3 Dec 2024, 09:48 | 0.072 | 0.072 mg/l |
| 18 Nov 2024, 13:26 | 0.058 | 0.058 mg/l |
| 15 Oct 2024, 11:46 | 0.076 | 0.076 mg/l |
| 17 Sep 2024, 12:25 | 0.032 | 0.032 mg/l |
| 22 Aug 2024, 14:59 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jul 2024, 12:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2024, 13:00 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.546 mg/l
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 10:57 | 0.546 | 0.546 mg/l |
| 16 Apr 2026, 13:02 | 1.48 | 1.48 mg/l |
| 5 Mar 2026, 10:55 | 1.09 | 1.09 mg/l |
| 6 Feb 2026, 10:29 | 1.19 | 1.19 mg/l |
| 8 Jan 2026, 13:47 | 1.79 | 1.79 mg/l |
| 11 Dec 2025, 11:27 | 1.49 | 1.49 mg/l |
| 13 Nov 2025, 11:33 | 1.59 | 1.59 mg/l |
| 10 Oct 2025, 11:28 | 0.845 | 0.845 mg/l |
| 12 Sep 2025, 12:09 | 1.48 | 1.48 mg/l |
| 18 Aug 2025, 11:11 | 0.296 | 0.296 mg/l |
| 31 Jul 2025, 11:45 | 0.705 | 0.705 mg/l |
| 23 Jun 2025, 12:15 | 0.66 | 0.66 mg/l |
| 13 May 2025, 10:06 | 0.429 | 0.429 mg/l |
| 1 Apr 2025, 08:48 | 0.316 | 0.316 mg/l |
| 5 Mar 2025, 11:47 | 0.85 | 0.85 mg/l |
| 5 Feb 2025, 11:26 | 0.98 | 0.98 mg/l |
| 22 Jan 2025, 09:54 | 1.18 | 1.18 mg/l |
| 3 Dec 2024, 09:48 | 1.19 | 1.19 mg/l |
| 18 Nov 2024, 13:26 | 1.18 | 1.18 mg/l |
| 15 Oct 2024, 11:46 | 0.82 | 0.82 mg/l |
| 17 Sep 2024, 12:25 | 0.836 | 0.836 mg/l |
| 22 Aug 2024, 14:59 | 0.556 | 0.556 mg/l |
| 19 Jul 2024, 12:05 | 0.765 | 0.765 mg/l |
| 17 Jun 2024, 13:00 | 1.18 | 1.18 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.033 mg/l
Sampled 12 May 2026, 5 months ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 10:57 | 0.033 | 0.033 mg/l |
| 16 Apr 2026, 13:02 | 0.037 | 0.037 mg/l |
| 5 Mar 2026, 10:55 | 0.056 | 0.056 mg/l |
| 6 Feb 2026, 10:29 | 0.052 | 0.052 mg/l |
| 8 Jan 2026, 13:47 | 0.061 | 0.061 mg/l |
| 11 Dec 2025, 11:27 | 0.11 | 0.11 mg/l |
| 13 Nov 2025, 11:33 | 0.13 | 0.13 mg/l |
| 10 Oct 2025, 11:28 | 0.067 | 0.067 mg/l |
| 12 Sep 2025, 12:09 | 0.045 | 0.045 mg/l |
| 18 Aug 2025, 11:11 | 0.074 | 0.074 mg/l |
| 31 Jul 2025, 11:45 | 0.083 | 0.083 mg/l |
| 23 Jun 2025, 12:15 | 0.098 | 0.098 mg/l |
| 13 May 2025, 10:06 | 0.031 | 0.031 mg/l |
| 1 Apr 2025, 08:48 | 0.013 | 0.013 mg/l |
| 5 Mar 2025, 11:47 | 0.031 | 0.031 mg/l |
| 5 Feb 2025, 11:26 | 0.054 | 0.054 mg/l |
| 22 Jan 2025, 09:54 | 0.12 | 0.12 mg/l |
| 18 Nov 2024, 13:26 | 0.13 | 0.13 mg/l |
| 15 Oct 2024, 11:46 | 0.073 | 0.073 mg/l |
| 17 Sep 2024, 12:25 | 0.085 | 0.085 mg/l |
| 22 Aug 2024, 14:59 | 0.08 | 0.08 mg/l |
| 19 Jul 2024, 12:05 | 0.064 | 0.064 mg/l |
| 17 Jun 2024, 13:00 | 0.084 | 0.084 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1161 µS/cm
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 10:57 | 1161 | 1161 µS/cm |
| 16 Apr 2026, 13:02 | 717 | 717 µS/cm |
| 5 Mar 2026, 10:55 | 805 | 805 µS/cm |
| 6 Feb 2026, 10:29 | 823 | 823 µS/cm |
| 8 Jan 2026, 13:47 | 650 | 650 µS/cm |
| 11 Dec 2025, 11:27 | 455 | 455 µS/cm |
| 13 Nov 2025, 11:33 | 391 | 391 µS/cm |
| 10 Oct 2025, 11:28 | 926 | 926 µS/cm |
| 12 Sep 2025, 12:09 | 632 | 632 µS/cm |
| 18 Aug 2025, 11:11 | 1369 | 1369 µS/cm |
| 31 Jul 2025, 11:45 | 987 | 987 µS/cm |
| 23 Jun 2025, 12:15 | 1494 | 1494 µS/cm |
| 13 May 2025, 10:06 | 1318 | 1318 µS/cm |
| 1 Apr 2025, 08:48 | 1126 | 1126 µS/cm |
| 5 Mar 2025, 11:47 | 935 | 935 µS/cm |
| 5 Feb 2025, 11:26 | 841 | 841 µS/cm |
| 22 Jan 2025, 09:54 | 600 | 600 µS/cm |
| 3 Dec 2024, 09:48 | 406 | 406 µS/cm |
| 18 Nov 2024, 13:26 | 237 | 237 µS/cm |
| 15 Oct 2024, 11:46 | 789 | 789 µS/cm |
| 17 Sep 2024, 12:25 | 829 | 829 µS/cm |
| 22 Aug 2024, 14:59 | 1083 | 1083 µS/cm |
| 19 Jul 2024, 12:05 | 993 | 993 µS/cm |
| 17 Jun 2024, 13:00 | 749 | 749 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 | Jun 2024 – May 2026 | 104.6% 12 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 24 | Jun 2024 – May 2026 | 11.9 mg/l 12 May 2026 |
| Temperature of Water 0076 | River water | 24 | Jun 2024 – May 2026 | 9.5 °C 12 May 2026 |
| pH 0061 | River water | 24 | Jun 2024 – May 2026 | 8.35 12 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 24 | Jun 2024 – May 2026 | below 0.03 mg/l 12 May 2026 |
| Nitrate as N 0117 | River water | 24 | Jun 2024 – May 2026 | 0.546 mg/l 12 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Jun 2024 – May 2026 | 0.033 mg/l 12 May 2026 |
| Conductivity at 25 C 0077 | River water | 24 | Jun 2024 – May 2026 | 1161 µS/cm 12 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Jun 2024 – May 2026 | 270 mg/l 12 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Jun 2024 – May 2026 | below 0.00053 mg/l 12 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 22 | Jun 2024 – May 2026 | 1.7 mg/l 12 May 2026 |
| Nitrite as N 0118 | River water | 24 | Jun 2024 – May 2026 | below 0.004 mg/l 12 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 24 | Jun 2024 – May 2026 | 0.55 mg/l 12 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.