Croal at Farnworth Recorder Station upstream of Weir
EA name: CROAL @ FARNWORTH RECORDER STN U/S WEIR (also listed as “RIVER CROAL AT FARNWORTH RECORDER STATION U/S OF WEIR”)
Environment Agency sampling point NW-88002316 · 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
- 4 Aug 2026, 11:4658 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 33 since 5 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 374343, 406831As published, to the nearest 1 m. Open in a map
- River, by its own name
- Croal
- River, by the map
- River CroalPlaced on the river its name gives, 12 m from the line.
- Next gauge downstream
- Kearsley On the River Irwell · 2.5 km along the riverBeside Farnworth: too close to say above or below.
- Nearest gauge upstream
- Bessy Brook On the Bessy Brook · 11 km along the riverThreadfold Way On the Eagley Brook · 11 km along the river
- Why it was sampled
- Monitoring (national agency policy) (21 samples)
Environmental monitoring statutory (EU directives) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
79.2%
Sampled 4 Aug 2026, 58 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Aug 2026, 11:46 | 79.2 | 79.2% |
| 15 Jul 2026, 10:48 | 78.3 | 78.3% |
| 16 Jun 2026, 11:15 | 92.7 | 92.7% |
| 14 May 2026, 12:17 | 98.3 | 98.3% |
| 13 Apr 2026, 12:25 | 100.5 | 100.5% |
| 27 Mar 2026, 11:42 | 100 | 100% |
| 18 Feb 2026, 10:02 | 99.7 | 99.7% |
| 27 Jan 2026, 11:34 | 97.3 | 97.3% |
| 10 Dec 2025, 10:32 | 99.4 | 99.4% |
| 19 Nov 2025, 10:53 | 100.4 | 100.4% |
| 21 Oct 2025, 10:08 | 93.5 | 93.5% |
| 22 Sep 2025, 10:48 | 99 | 99% |
| 14 Aug 2025, 10:15 | 73.4 | 73.4% |
| 24 Jul 2025, 12:39 | 74.9 | 74.9% |
| 11 Jun 2025, 09:34 | 88.5 | 88.5% |
| 19 May 2025, 09:08 | 83.3 | 83.3% |
| 3 Apr 2025, 10:59 | 94.7 | 94.7% |
| 14 Mar 2024, 10:24 | 98.3 | 98.3% |
| 1 Feb 2024, 10:34 | 101.1 | 101.1% |
| 9 Jan 2024, 09:41 | 97.3 | 97.3% |
| 4 Dec 2023, 11:06 | 95.7 | 95.7% |
| 1 Nov 2023, 10:06 | 99.1 | 99.1% |
| 5 Oct 2023, 13:14 | 98.5 | 98.5% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.62 mg/l
Sampled 4 Aug 2026, 58 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Aug 2026, 11:46 | 7.62 | 7.62 mg/l |
| 15 Jul 2026, 10:48 | 7.52 | 7.52 mg/l |
| 16 Jun 2026, 11:15 | 9.45 | 9.45 mg/l |
| 14 May 2026, 12:17 | 10.9 | 10.9 mg/l |
| 13 Apr 2026, 12:25 | 11.7 | 11.7 mg/l |
| 27 Mar 2026, 11:42 | 11.7 | 11.7 mg/l |
| 18 Feb 2026, 10:02 | 13 | 13 mg/l |
| 27 Jan 2026, 11:34 | 12.3 | 12.3 mg/l |
| 10 Dec 2025, 10:32 | 11.7 | 11.7 mg/l |
| 19 Nov 2025, 10:53 | 12.2 | 12.2 mg/l |
| 21 Oct 2025, 10:08 | 10.1 | 10.1 mg/l |
| 22 Sep 2025, 10:48 | 11 | 11 mg/l |
| 14 Aug 2025, 10:15 | 6.85 | 6.85 mg/l |
| 24 Jul 2025, 12:39 | 7.16 | 7.16 mg/l |
| 11 Jun 2025, 09:34 | 9.45 | 9.45 mg/l |
| 19 May 2025, 09:08 | 8.93 | 8.93 mg/l |
| 3 Apr 2025, 10:59 | 11 | 11 mg/l |
| 14 Mar 2024, 10:24 | 11.4 | 11.4 mg/l |
| 1 Feb 2024, 10:34 | 12.8 | 12.8 mg/l |
| 9 Jan 2024, 09:41 | 12.7 | 12.7 mg/l |
| 4 Dec 2023, 11:06 | 12.1 | 12.1 mg/l |
| 1 Nov 2023, 10:06 | 11 | 11 mg/l |
| 5 Oct 2023, 13:14 | 10.2 | 10.2 mg/l |
Water temperature
code 0076 · °C
17.1 °C
Sampled 4 Aug 2026, 58 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Aug 2026, 11:46 | 17.1 | 17.1 °C |
| 15 Jul 2026, 10:48 | 17.2 | 17.2 °C |
| 16 Jun 2026, 11:15 | 14.4 | 14.4 °C |
| 14 May 2026, 12:17 | 10.5 | 10.5 °C |
| 13 Apr 2026, 12:25 | 8.6 | 8.6 °C |
| 27 Mar 2026, 11:42 | 8.4 | 8.4 °C |
| 18 Feb 2026, 10:02 | 4 | 4 °C |
| 27 Jan 2026, 11:34 | 5.4 | 5.4 °C |
| 10 Dec 2025, 10:32 | 8.2 | 8.2 °C |
| 19 Nov 2025, 10:53 | 7 | 7 °C |
| 21 Oct 2025, 10:08 | 11.9 | 11.9 °C |
| 22 Sep 2025, 10:48 | 10.5 | 10.5 °C |
| 14 Aug 2025, 10:15 | 18.6 | 18.6 °C |
| 24 Jul 2025, 12:39 | 17.4 | 17.4 °C |
| 11 Jun 2025, 09:34 | 12.3 | 12.3 °C |
| 19 May 2025, 09:08 | 12.1 | 12.1 °C |
| 3 Apr 2025, 10:59 | 8.6 | 8.6 °C |
| 14 Mar 2024, 10:24 | 8.9 | 8.9 °C |
| 1 Feb 2024, 10:34 | 5.2 | 5.2 °C |
| 9 Jan 2024, 09:41 | 4.1 | 4.1 °C |
| 4 Dec 2023, 11:06 | 5.2 | 5.2 °C |
| 1 Nov 2023, 10:06 | 10.8 | 10.8 °C |
| 5 Oct 2023, 13:14 | 13.8 | 13.8 °C |
pH
code 0061
7.47
Sampled 4 Aug 2026, 58 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Aug 2026, 11:46 | 7.47 | 7.47 |
| 15 Jul 2026, 10:48 | 7.67 | 7.67 |
| 16 Jun 2026, 11:15 | 7.75 | 7.75 |
| 14 May 2026, 12:17 | 7.81 | 7.81 |
| 13 Apr 2026, 12:25 | 7.88 | 7.88 |
| 27 Mar 2026, 11:42 | 7.8 | 7.8 |
| 18 Feb 2026, 10:02 | 7.77 | 7.77 |
| 27 Jan 2026, 11:34 | 7.73 | 7.73 |
| 10 Dec 2025, 10:32 | 7.66 | 7.66 |
| 19 Nov 2025, 10:53 | 7.89 | 7.89 |
| 21 Oct 2025, 10:08 | 7.77 | 7.77 |
| 22 Sep 2025, 10:48 | 7.76 | 7.76 |
| 14 Aug 2025, 10:15 | 7.64 | 7.64 |
| 24 Jul 2025, 12:39 | 7.52 | 7.52 |
| 11 Jun 2025, 09:34 | 7.66 | 7.66 |
| 19 May 2025, 09:08 | 7.59 | 7.59 |
| 3 Apr 2025, 10:59 | 7.88 | 7.88 |
| 14 Mar 2024, 10:24 | 7.82 | 7.82 |
| 1 Feb 2024, 10:34 | 7.81 | 7.81 |
| 9 Jan 2024, 09:41 | 7.76 | 7.76 |
| 4 Dec 2023, 11:06 | 7.79 | 7.79 |
| 1 Nov 2023, 10:06 | 7.7 | 7.7 |
| 5 Oct 2023, 13:14 | 7.56 | 7.56 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.11 mg/l
Sampled 4 Aug 2026, 58 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Aug 2026, 11:46 | 0.11 | 0.11 mg/l |
| 15 Jul 2026, 10:48 | 0.16 | 0.16 mg/l |
| 16 Jun 2026, 11:15 | 0.14 | 0.14 mg/l |
| 14 May 2026, 12:17 | 0.13 | 0.13 mg/l |
| 13 Apr 2026, 12:25 | 0.11 | 0.11 mg/l |
| 27 Mar 2026, 11:42 | 0.47 | 0.47 mg/l |
| 18 Feb 2026, 10:02 | 0.097 | 0.097 mg/l |
| 27 Jan 2026, 11:34 | 0.78 | 0.78 mg/l |
| 10 Dec 2025, 10:32 | 0.068 | 0.068 mg/l |
| 19 Nov 2025, 10:53 | 0.074 | 0.074 mg/l |
| 21 Oct 2025, 10:08 | 0.046 | 0.046 mg/l |
| 22 Sep 2025, 10:48 | 0.1 | 0.1 mg/l |
| 14 Aug 2025, 10:15 | 0.18 | 0.18 mg/l |
| 24 Jul 2025, 12:39 | 0.14 | 0.14 mg/l |
| 11 Jun 2025, 09:34 | 0.12 | 0.12 mg/l |
| 19 May 2025, 09:08 | 0.14 | 0.14 mg/l |
| 14 Mar 2024, 10:24 | 0.12 | 0.12 mg/l |
| 1 Feb 2024, 10:34 | 0.14 | 0.14 mg/l |
| 9 Jan 2024, 09:41 | 0.14 | 0.14 mg/l |
| 4 Dec 2023, 11:06 | 0.3 | 0.3 mg/l |
| 1 Nov 2023, 10:06 | 0.24 | 0.24 mg/l |
| 5 Oct 2023, 13:14 | 0.14 | 0.14 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.644 mg/l
Sampled 4 Aug 2026, 58 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Aug 2026, 11:46 | 0.644 | 0.644 mg/l |
| 15 Jul 2026, 10:48 | 0.817 | 0.817 mg/l |
| 16 Jun 2026, 11:15 | 0.915 | 0.915 mg/l |
| 14 May 2026, 12:17 | 0.879 | 0.879 mg/l |
| 13 Apr 2026, 12:25 | 0.908 | 0.908 mg/l |
| 27 Mar 2026, 11:42 | 0.95 | 0.95 mg/l |
| 18 Feb 2026, 10:02 | 1.19 | 1.19 mg/l |
| 27 Jan 2026, 11:34 | 1.08 | 1.08 mg/l |
| 10 Dec 2025, 10:32 | 0.994 | 0.994 mg/l |
| 19 Nov 2025, 10:53 | 0.874 | 0.874 mg/l |
| 21 Oct 2025, 10:08 | 0.848 | 0.848 mg/l |
| 22 Sep 2025, 10:48 | 1.49 | 1.49 mg/l |
| 14 Aug 2025, 10:15 | 0.631 | 0.631 mg/l |
| 24 Jul 2025, 12:39 | 0.623 | 0.623 mg/l |
| 11 Jun 2025, 09:34 | 0.81 | 0.81 mg/l |
| 19 May 2025, 09:08 | 0.892 | 0.892 mg/l |
| 14 Mar 2024, 10:24 | 0.794 | 0.794 mg/l |
| 1 Feb 2024, 10:34 | 0.881 | 0.881 mg/l |
| 9 Jan 2024, 09:41 | 0.989 | 0.989 mg/l |
| 4 Dec 2023, 11:06 | 0.92 | 0.92 mg/l |
| 1 Nov 2023, 10:06 | 0.621 | 0.621 mg/l |
| 5 Oct 2023, 13:14 | 0.68 | 0.68 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.07 mg/l
Sampled 15 Jul 2026, 3 months ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jul 2026, 10:48 | 0.07 | 0.07 mg/l |
| 16 Jun 2026, 11:15 | 0.061 | 0.061 mg/l |
| 14 May 2026, 12:17 | 0.039 | 0.039 mg/l |
| 13 Apr 2026, 12:25 | 0.04 | 0.04 mg/l |
| 27 Mar 2026, 11:42 | 0.079 | 0.079 mg/l |
| 18 Feb 2026, 10:02 | 0.033 | 0.033 mg/l |
| 27 Jan 2026, 11:34 | 0.093 | 0.093 mg/l |
| 10 Dec 2025, 10:32 | 0.039 | 0.039 mg/l |
| 19 Nov 2025, 10:53 | 0.036 | 0.036 mg/l |
| 21 Oct 2025, 10:08 | 0.043 | 0.043 mg/l |
| 22 Sep 2025, 10:48 | 0.053 | 0.053 mg/l |
| 14 Aug 2025, 10:15 | 0.083 | 0.083 mg/l |
| 24 Jul 2025, 12:39 | 0.098 | 0.098 mg/l |
| 11 Jun 2025, 09:34 | 0.058 | 0.058 mg/l |
| 19 May 2025, 09:08 | 0.055 | 0.055 mg/l |
| 14 Mar 2024, 10:24 | 0.027 | 0.027 mg/l |
| 1 Feb 2024, 10:34 | 0.036 | 0.036 mg/l |
| 9 Jan 2024, 09:41 | 0.03 | 0.03 mg/l |
| 4 Dec 2023, 11:06 | 0.051 | 0.051 mg/l |
| 1 Nov 2023, 10:06 | 0.056 | 0.056 mg/l |
| 5 Oct 2023, 13:14 | 0.049 | 0.049 mg/l |
Turbidity
code 6396 · NTU
15 NTU
Sampled 14 Mar 2024, 2.5 years ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 14 Mar 2024, 10:24 | 15 | 15 NTU |
| 1 Feb 2024, 10:34 | 10 | 10 NTU |
| 9 Jan 2024, 09:41 | 5.1 | 5.1 NTU |
| 4 Dec 2023, 11:06 | 10 | 10 NTU |
| 1 Nov 2023, 10:06 | 32 | 32 NTU |
| 5 Oct 2023, 13:14 | 5.9 | 5.9 NTU |
Conductivity
at 25 °C · code 0077 · µS/cm
282 µS/cm
Sampled 4 Aug 2026, 58 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 4 Aug 2026, 11:46 | 282 | 282 µS/cm |
| 15 Jul 2026, 10:48 | 289 | 289 µS/cm |
| 16 Jun 2026, 11:15 | 294 | 294 µS/cm |
| 14 May 2026, 12:17 | 286 | 286 µS/cm |
| 13 Apr 2026, 12:25 | 313 | 313 µS/cm |
| 27 Mar 2026, 11:42 | 252 | 252 µS/cm |
| 18 Feb 2026, 10:02 | 260 | 260 µS/cm |
| 27 Jan 2026, 11:34 | 266 | 266 µS/cm |
| 10 Dec 2025, 10:32 | 205 | 205 µS/cm |
| 19 Nov 2025, 10:53 | 236 | 236 µS/cm |
| 21 Oct 2025, 10:08 | 274 | 274 µS/cm |
| 22 Sep 2025, 10:48 | 272 | 272 µS/cm |
| 14 Aug 2025, 10:15 | 305 | 305 µS/cm |
| 24 Jul 2025, 12:39 | 311 | 311 µS/cm |
| 11 Jun 2025, 09:34 | 268 | 268 µS/cm |
| 19 May 2025, 09:08 | 329 | 329 µS/cm |
| 3 Apr 2025, 10:59 | 304 | 304 µS/cm |
| 14 Mar 2024, 10:24 | 230 | 230 µS/cm |
| 1 Feb 2024, 10:34 | 206 | 206 µS/cm |
| 9 Jan 2024, 09:41 | 262 | 262 µS/cm |
| 4 Dec 2023, 11:06 | 692 | 692 µS/cm |
| 1 Nov 2023, 10:06 | 182 | 182 µS/cm |
| 5 Oct 2023, 13:14 | 204 | 204 µS/cm |
Everything measured here
17 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 17 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 23 | Oct 2023 – Aug 2026 | 79.2% 4 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 23 | Oct 2023 – Aug 2026 | 7.62 mg/l 4 Aug 2026 |
| Temperature of Water 0076 | River water | 23 | Oct 2023 – Aug 2026 | 17.1 °C 4 Aug 2026 |
| pH 0061 | River water | 23 | Oct 2023 – Aug 2026 | 7.47 4 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 22 | Oct 2023 – Aug 2026 | 0.11 mg/l 4 Aug 2026 |
| Nitrate as N 0117 | River water | 22 | Oct 2023 – Aug 2026 | 0.644 mg/l 4 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Oct 2023 – Jul 2026 | 0.07 mg/l 15 Jul 2026 |
| Turbidity 6396 | River water | 6 | Oct 2023 – Mar 2024 | 15 NTU 14 Mar 2024 |
| Conductivity at 25 C 0077 | River water | 23 | Oct 2023 – Aug 2026 | 282 µS/cm 4 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 22 | Oct 2023 – Aug 2026 | 80 mg/l 4 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Oct 2023 – Aug 2026 | 0.00101 mg/l 4 Aug 2026 |
| BOD : 5 Day ATU 0085 | River water | 24 | Jun 2024 – May 2026 | 1.9 mg/l 14 May 2026 |
| Chloride 0172 | River water | 11 | May 2025 – Mar 2026 | 26 mg/l 27 Mar 2026 |
| Chlorophyll : Acetone Extract 7887 | River water | 6 | Oct 2023 – Mar 2024 | 4.4 µg/l 14 Mar 2024 |
| Nitrite as N 0118 | River water | 22 | Oct 2023 – Aug 2026 | 0.0064 mg/l 4 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 22 | Oct 2023 – Aug 2026 | 0.65 mg/l 4 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 17 | Oct 2023 – Mar 2026 | 19 mg/l 27 Mar 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.