River Yarrow at Birkacre
EA name: RIVER YARROW AT BIRKACRE
Environment Agency sampling point NW-88003159 · 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, 11:345 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 20 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 357061, 415147As published, to the nearest 1 m. Open in a map
- River, by its own name
- Yarrow
- River, by the map
- River YarrowPlaced on the river its name gives, 2 m from the line.
- Next gauge downstream
- Pincock Brow On the River Yarrow · 5.7 km along the river
- Nearest gauge upstream
- Chorley Haworth Road On the Black Brook · 6.9 km along the river
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
98.4%
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 11:34 | 98.4 | 98.4% |
| 16 Apr 2026, 11:29 | 103.1 | 103.1% |
| 13 Mar 2026, 10:41 | 99.3 | 99.3% |
| 12 Feb 2026, 10:31 | 97.8 | 97.8% |
| 8 Jan 2026, 12:57 | 98.7 | 98.7% |
| 11 Dec 2025, 12:19 | 100.5 | 100.5% |
| 6 Nov 2025, 13:32 | 99.7 | 99.7% |
| 10 Oct 2025, 12:39 | 98.8 | 98.8% |
| 12 Sep 2025, 10:15 | 94.5 | 94.5% |
| 4 Aug 2025, 09:35 | 96.2 | 96.2% |
| 15 Jul 2025, 10:57 | 95.1 | 95.1% |
| 23 Jun 2025, 12:46 | 98 | 98% |
| 8 May 2025, 10:19 | 101.3 | 101.3% |
| 2 Apr 2025, 14:20 | 115.1 | 115.1% |
| 10 Mar 2025, 11:14 | 107.3 | 107.3% |
| 5 Feb 2025, 10:32 | 101.8 | 101.8% |
| 22 Jan 2025, 10:46 | 101.2 | 101.2% |
| 3 Dec 2024, 11:00 | 101.1 | 101.1% |
| 22 Nov 2024, 12:18 | 99.7 | 99.7% |
| 15 Oct 2024, 12:18 | 100.4 | 100.4% |
| 17 Sep 2024, 12:58 | 100.4 | 100.4% |
| 21 Aug 2024, 08:55 | 98.1 | 98.1% |
| 19 Jul 2024, 13:08 | 105.6 | 105.6% |
| 20 Jun 2024, 10:00 | 97.9 | 97.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.2 mg/l
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 11:34 | 11.2 | 11.2 mg/l |
| 16 Apr 2026, 11:29 | 11.4 | 11.4 mg/l |
| 13 Mar 2026, 10:41 | 12.1 | 12.1 mg/l |
| 12 Feb 2026, 10:31 | 12.1 | 12.1 mg/l |
| 8 Jan 2026, 12:57 | 12.9 | 12.9 mg/l |
| 11 Dec 2025, 12:19 | 12.1 | 12.1 mg/l |
| 6 Nov 2025, 13:32 | 10.6 | 10.6 mg/l |
| 10 Oct 2025, 12:39 | 10.5 | 10.5 mg/l |
| 12 Sep 2025, 10:15 | 10 | 10 mg/l |
| 4 Aug 2025, 09:35 | 9.59 | 9.59 mg/l |
| 15 Jul 2025, 10:57 | 9.46 | 9.46 mg/l |
| 23 Jun 2025, 12:46 | 9.67 | 9.67 mg/l |
| 8 May 2025, 10:19 | 11.2 | 11.2 mg/l |
| 2 Apr 2025, 14:20 | 12.8 | 12.8 mg/l |
| 10 Mar 2025, 11:14 | 12.7 | 12.7 mg/l |
| 5 Feb 2025, 10:32 | 13 | 13 mg/l |
| 22 Jan 2025, 10:46 | 13.1 | 13.1 mg/l |
| 3 Dec 2024, 11:00 | 12.5 | 12.5 mg/l |
| 22 Nov 2024, 12:18 | 12.7 | 12.7 mg/l |
| 15 Oct 2024, 12:18 | 11.2 | 11.2 mg/l |
| 17 Sep 2024, 12:58 | 10.5 | 10.5 mg/l |
| 21 Aug 2024, 08:55 | 10.2 | 10.2 mg/l |
| 19 Jul 2024, 13:08 | 10.2 | 10.2 mg/l |
| 20 Jun 2024, 10:00 | 10.2 | 10.2 mg/l |
Water temperature
code 0076 · °C
9.4 °C
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 11:34 | 9.4 | 9.4 °C |
| 16 Apr 2026, 11:29 | 10.7 | 10.7 °C |
| 13 Mar 2026, 10:41 | 6.7 | 6.7 °C |
| 12 Feb 2026, 10:31 | 6.2 | 6.2 °C |
| 8 Jan 2026, 12:57 | 4 | 4 °C |
| 11 Dec 2025, 12:19 | 7.4 | 7.4 °C |
| 6 Nov 2025, 13:32 | 12.5 | 12.5 °C |
| 10 Oct 2025, 12:39 | 12.7 | 12.7 °C |
| 12 Sep 2025, 10:15 | 12.7 | 12.7 °C |
| 4 Aug 2025, 09:35 | 15.4 | 15.4 °C |
| 15 Jul 2025, 10:57 | 15.5 | 15.5 °C |
| 23 Jun 2025, 12:46 | 15.9 | 15.9 °C |
| 8 May 2025, 10:19 | 10.7 | 10.7 °C |
| 2 Apr 2025, 14:20 | 10.7 | 10.7 °C |
| 10 Mar 2025, 11:14 | 8 | 8 °C |
| 5 Feb 2025, 10:32 | 4.9 | 4.9 °C |
| 22 Jan 2025, 10:46 | 4.5 | 4.5 °C |
| 3 Dec 2024, 11:00 | 6.3 | 6.3 °C |
| 22 Nov 2024, 12:18 | 4.9 | 4.9 °C |
| 15 Oct 2024, 12:18 | 10.6 | 10.6 °C |
| 17 Sep 2024, 12:58 | 13.4 | 13.4 °C |
| 21 Aug 2024, 08:55 | 13.7 | 13.7 °C |
| 19 Jul 2024, 13:08 | 17 | 17 °C |
| 20 Jun 2024, 10:00 | 13.3 | 13.3 °C |
pH
code 0061
8.1
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 11:34 | 8.1 | 8.1 |
| 16 Apr 2026, 11:29 | 8.16 | 8.16 |
| 13 Mar 2026, 10:41 | 8.21 | 8.21 |
| 12 Feb 2026, 10:31 | 8.06 | 8.06 |
| 8 Jan 2026, 12:57 | 8.02 | 8.02 |
| 11 Dec 2025, 12:19 | 7.91 | 7.91 |
| 6 Nov 2025, 13:32 | 7.92 | 7.92 |
| 10 Oct 2025, 12:39 | 8.04 | 8.04 |
| 12 Sep 2025, 10:15 | 7.95 | 7.95 |
| 4 Aug 2025, 09:35 | 8.36 | 8.36 |
| 15 Jul 2025, 10:57 | 8.39 | 8.39 |
| 23 Jun 2025, 12:46 | 8.36 | 8.36 |
| 8 May 2025, 10:19 | 8.08 | 8.08 |
| 2 Apr 2025, 14:20 | 8.65 | 8.65 |
| 10 Mar 2025, 11:14 | 8.26 | 8.26 |
| 5 Feb 2025, 10:32 | 8.02 | 8.02 |
| 22 Jan 2025, 10:46 | 7.99 | 7.99 |
| 3 Dec 2024, 11:00 | 7.81 | 7.81 |
| 22 Nov 2024, 12:18 | 8.04 | 8.04 |
| 15 Oct 2024, 12:18 | 7.92 | 7.92 |
| 17 Sep 2024, 12:58 | 7.97 | 7.97 |
| 21 Aug 2024, 08:55 | 8.15 | 8.15 |
| 19 Jul 2024, 13:08 | 8.17 | 8.17 |
| 20 Jun 2024, 10:00 | 8.16 | 8.16 |
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, 11:34 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2026, 11:29 | 0.28 | 0.28 mg/l |
| 13 Mar 2026, 10:41 | 0.2 | 0.2 mg/l |
| 12 Feb 2026, 10:31 | 0.096 | 0.096 mg/l |
| 8 Jan 2026, 12:57 | 0.14 | 0.14 mg/l |
| 11 Dec 2025, 12:19 | 0.038 | 0.038 mg/l |
| 6 Nov 2025, 13:32 | 0.045 | 0.045 mg/l |
| 10 Oct 2025, 12:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Sep 2025, 10:15 | 0.63 | 0.63 mg/l |
| 4 Aug 2025, 09:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jul 2025, 10:57 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Jun 2025, 12:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 May 2025, 10:19 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Apr 2025, 14:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Mar 2025, 11:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Feb 2025, 10:32 | 0.069 | 0.069 mg/l |
| 22 Jan 2025, 10:46 | 0.28 | 0.28 mg/l |
| 3 Dec 2024, 11:00 | 0.048 | 0.048 mg/l |
| 22 Nov 2024, 12:18 | 0.14 | 0.14 mg/l |
| 15 Oct 2024, 12:18 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Sep 2024, 12:58 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Aug 2024, 08:55 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Jul 2024, 13:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Jun 2024, 10:00 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.822 mg/l
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 11:34 | 0.822 | 0.822 mg/l |
| 16 Apr 2026, 11:29 | 0.966 | 0.966 mg/l |
| 13 Mar 2026, 10:41 | 1.18 | 1.18 mg/l |
| 12 Feb 2026, 10:31 | 1.39 | 1.39 mg/l |
| 8 Jan 2026, 12:57 | 0.942 | 0.942 mg/l |
| 11 Dec 2025, 12:19 | 0.923 | 0.923 mg/l |
| 6 Nov 2025, 13:32 | 1.58 | 1.58 mg/l |
| 10 Oct 2025, 12:39 | 0.858 | 0.858 mg/l |
| 12 Sep 2025, 10:15 | 0.968 | 0.968 mg/l |
| 4 Aug 2025, 09:35 | 0.546 | 0.546 mg/l |
| 15 Jul 2025, 10:57 | 0.356 | 0.356 mg/l |
| 23 Jun 2025, 12:46 | 0.721 | 0.721 mg/l |
| 8 May 2025, 10:19 | 0.542 | 0.542 mg/l |
| 2 Apr 2025, 14:20 | 0.496 | 0.496 mg/l |
| 10 Mar 2025, 11:14 | 0.895 | 0.895 mg/l |
| 5 Feb 2025, 10:32 | 0.862 | 0.862 mg/l |
| 22 Jan 2025, 10:46 | 0.938 | 0.938 mg/l |
| 3 Dec 2024, 11:00 | 0.694 | 0.694 mg/l |
| 22 Nov 2024, 12:18 | 0.658 | 0.658 mg/l |
| 15 Oct 2024, 12:18 | 0.546 | 0.546 mg/l |
| 17 Sep 2024, 12:58 | 0.476 | 0.476 mg/l |
| 21 Aug 2024, 08:55 | 0.586 | 0.586 mg/l |
| 19 Jul 2024, 13:08 | 0.666 | 0.666 mg/l |
| 20 Jun 2024, 10:00 | 0.822 | 0.822 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.055 mg/l
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 11:34 | 0.055 | 0.055 mg/l |
| 16 Apr 2026, 11:29 | 0.084 | 0.084 mg/l |
| 13 Mar 2026, 10:41 | 0.085 | 0.085 mg/l |
| 12 Feb 2026, 10:31 | 0.056 | 0.056 mg/l |
| 8 Jan 2026, 12:57 | 0.052 | 0.052 mg/l |
| 11 Dec 2025, 12:19 | 0.036 | 0.036 mg/l |
| 6 Nov 2025, 13:32 | 0.068 | 0.068 mg/l |
| 10 Oct 2025, 12:39 | 0.05 | 0.05 mg/l |
| 12 Sep 2025, 10:15 | 0.13 | 0.13 mg/l |
| 4 Aug 2025, 09:35 | 0.06 | 0.06 mg/l |
| 15 Jul 2025, 10:57 | 0.067 | 0.067 mg/l |
| 23 Jun 2025, 12:46 | 0.081 | 0.081 mg/l |
| 8 May 2025, 10:19 | 0.027 | 0.027 mg/l |
| 2 Apr 2025, 14:20 | 0.02 | 0.02 mg/l |
| 10 Mar 2025, 11:14 | 0.037 | 0.037 mg/l |
| 5 Feb 2025, 10:32 | 0.041 | 0.041 mg/l |
| 22 Jan 2025, 10:46 | 0.18 | 0.18 mg/l |
| 3 Dec 2024, 11:00 | 0.052 | 0.052 mg/l |
| 22 Nov 2024, 12:18 | 0.13 | 0.13 mg/l |
| 15 Oct 2024, 12:18 | 0.052 | 0.052 mg/l |
| 17 Sep 2024, 12:58 | 0.067 | 0.067 mg/l |
| 21 Aug 2024, 08:55 | 0.066 | 0.066 mg/l |
| 19 Jul 2024, 13:08 | 0.066 | 0.066 mg/l |
| 20 Jun 2024, 10:00 | 0.069 | 0.069 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
328 µS/cm
Sampled 12 May 2026, 5 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 May 2026, 11:34 | 328 | 328 µS/cm |
| 16 Apr 2026, 11:29 | 307 | 307 µS/cm |
| 13 Mar 2026, 10:41 | 339 | 339 µS/cm |
| 12 Feb 2026, 10:31 | 209 | 209 µS/cm |
| 8 Jan 2026, 12:57 | 234 | 234 µS/cm |
| 11 Dec 2025, 12:19 | 178 | 178 µS/cm |
| 6 Nov 2025, 13:32 | 309 | 309 µS/cm |
| 10 Oct 2025, 12:39 | 350 | 350 µS/cm |
| 12 Sep 2025, 10:15 | 248 | 248 µS/cm |
| 4 Aug 2025, 09:35 | 343 | 343 µS/cm |
| 15 Jul 2025, 10:57 | 365 | 365 µS/cm |
| 23 Jun 2025, 12:46 | 664 | 664 µS/cm |
| 8 May 2025, 10:19 | 386 | 386 µS/cm |
| 2 Apr 2025, 14:20 | 361 | 361 µS/cm |
| 10 Mar 2025, 11:14 | 380 | 380 µS/cm |
| 5 Feb 2025, 10:32 | 222 | 222 µS/cm |
| 22 Jan 2025, 10:46 | 263 | 263 µS/cm |
| 3 Dec 2024, 11:00 | 170 | 170 µS/cm |
| 22 Nov 2024, 12:18 | 319 | 319 µS/cm |
| 15 Oct 2024, 12:18 | 223 | 223 µS/cm |
| 17 Sep 2024, 12:58 | 216 | 216 µS/cm |
| 21 Aug 2024, 08:55 | 309 | 309 µS/cm |
| 19 Jul 2024, 13:08 | 366 | 366 µS/cm |
| 20 Jun 2024, 10:00 | 376 | 376 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 | 98.4% 12 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 24 | Jun 2024 – May 2026 | 11.2 mg/l 12 May 2026 |
| Temperature of Water 0076 | River water | 24 | Jun 2024 – May 2026 | 9.4 °C 12 May 2026 |
| pH 0061 | River water | 24 | Jun 2024 – May 2026 | 8.1 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 | 0.822 mg/l 12 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 24 | Jun 2024 – May 2026 | 0.055 mg/l 12 May 2026 |
| Conductivity at 25 C 0077 | River water | 24 | Jun 2024 – May 2026 | 328 µS/cm 12 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Jun 2024 – May 2026 | 98 mg/l 12 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Jun 2024 – May 2026 | below 0.00052 mg/l 12 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 22 | Jun 2024 – May 2026 | 2.3 mg/l 12 May 2026 |
| Nitrite as N 0118 | River water | 24 | Jun 2024 – May 2026 | 0.0076 mg/l 12 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 24 | Jun 2024 – May 2026 | 0.83 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.