Caldew at Crookholme Mill
EA name: CALDEW AT CROOKHOLME MILL (also listed as “RSN0299 CALDEW AT CROOKHOLME MILL”)
Environment Agency sampling point NW-RSN0299 · 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
- 6 Dec 2024, 09:0822 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 8 Oct 2026 and had nothing newer.
- Samples banked
- 15 since 13 Oct 2023 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 336447, 543257As published, to the nearest 1 m. Open in a map
- River, by its own name
- Caldew
- River, by the map
- River CaldewPlaced on the river its name gives, 9 m from the line.
- Next gauge downstream
- Cummersdale On the River Caldew · 14 km along the river
- Nearest gauge upstream
- Sebergham On the River Caldew · 0.9 km along the river
- Why it was sampled
- Monitoring (national agency policy) (15 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
99.5%
Sampled 6 Dec 2024, 22 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Dec 2024, 09:08 | 99.5 | 99.5% |
| 8 Nov 2024, 12:21 | 102.7 | 102.7% |
| 4 Oct 2024, 11:46 | 101.5 | 101.5% |
| 9 Sep 2024, 14:55 | 99.5 | 99.5% |
| 1 Aug 2024, 11:17 | 103.5 | 103.5% |
| 16 Jul 2024, 14:51 | 101.5 | 101.5% |
| 6 Jun 2024, 11:20 | 101.1 | 101.1% |
| 1 May 2024, 13:07 | 108.6 | 108.6% |
| 3 Apr 2024, 08:38 | 100 | 100% |
| 7 Mar 2024, 11:41 | 101 | 101% |
| 9 Feb 2024, 13:21 | 98.9 | 98.9% |
| 25 Jan 2024, 14:09 | 99.9 | 99.9% |
| 1 Dec 2023, 11:15 | 100.1 | 100.1% |
| 3 Nov 2023, 09:50 | 100.8 | 100.8% |
| 13 Oct 2023, 11:39 | 100 | 100% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.2 mg/l
Sampled 6 Dec 2024, 22 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Dec 2024, 09:08 | 12.2 | 12.2 mg/l |
| 8 Nov 2024, 12:21 | 11.7 | 11.7 mg/l |
| 4 Oct 2024, 11:46 | 11.4 | 11.4 mg/l |
| 9 Sep 2024, 14:55 | 10.5 | 10.5 mg/l |
| 1 Aug 2024, 11:17 | 10.7 | 10.7 mg/l |
| 16 Jul 2024, 14:51 | 10.7 | 10.7 mg/l |
| 6 Jun 2024, 11:20 | 11.1 | 11.1 mg/l |
| 1 May 2024, 13:07 | 11.9 | 11.9 mg/l |
| 3 Apr 2024, 08:38 | 12 | 12 mg/l |
| 7 Mar 2024, 11:41 | 12.3 | 12.3 mg/l |
| 9 Feb 2024, 13:21 | 12.4 | 12.4 mg/l |
| 25 Jan 2024, 14:09 | 12.1 | 12.1 mg/l |
| 1 Dec 2023, 11:15 | 13.2 | 13.2 mg/l |
| 3 Nov 2023, 09:50 | 11.7 | 11.7 mg/l |
| 13 Oct 2023, 11:39 | 11.2 | 11.2 mg/l |
Water temperature
code 0076 · °C
6.5 °C
Sampled 6 Dec 2024, 22 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Dec 2024, 09:08 | 6.5 | 6.5 °C |
| 8 Nov 2024, 12:21 | 9.4 | 9.4 °C |
| 4 Oct 2024, 11:46 | 10.2 | 10.2 °C |
| 9 Sep 2024, 14:55 | 12.9 | 12.9 °C |
| 1 Aug 2024, 11:17 | 13.9 | 13.9 °C |
| 16 Jul 2024, 14:51 | 12.9 | 12.9 °C |
| 6 Jun 2024, 11:20 | 11.1 | 11.1 °C |
| 1 May 2024, 13:07 | 11.1 | 11.1 °C |
| 3 Apr 2024, 08:38 | 7.5 | 7.5 °C |
| 7 Mar 2024, 11:41 | 6.7 | 6.7 °C |
| 9 Feb 2024, 13:21 | 5.6 | 5.6 °C |
| 25 Jan 2024, 14:09 | 7.1 | 7.1 °C |
| 1 Dec 2023, 11:15 | 3.8 | 3.8 °C |
| 3 Nov 2023, 09:50 | 8.6 | 8.6 °C |
| 13 Oct 2023, 11:39 | 10.4 | 10.4 °C |
pH
code 0061
7.75
Sampled 6 Dec 2024, 22 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Dec 2024, 09:08 | 7.75 | 7.75 |
| 8 Nov 2024, 12:21 | 8.09 | 8.09 |
| 4 Oct 2024, 11:46 | 7.77 | 7.77 |
| 9 Sep 2024, 14:55 | 7.57 | 7.57 |
| 1 Aug 2024, 11:17 | 8.24 | 8.24 |
| 16 Jul 2024, 14:51 | 8.27 | 8.27 |
| 6 Jun 2024, 11:20 | 7.82 | 7.82 |
| 1 May 2024, 13:07 | 8.15 | 8.15 |
| 3 Apr 2024, 08:38 | 8.02 | 8.02 |
| 7 Mar 2024, 11:41 | 7.78 | 7.78 |
| 9 Feb 2024, 13:21 | 7.36 | 7.36 |
| 25 Jan 2024, 14:09 | 7.63 | 7.63 |
| 1 Dec 2023, 11:15 | 8.01 | 8.01 |
| 3 Nov 2023, 09:50 | 7.74 | 7.74 |
| 13 Oct 2023, 11:39 | 7.75 | 7.75 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.0025 mg/l
Sampled 6 Dec 2024, 22 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Dec 2024, 09:08 | 0.0025 | 0.0025 mg/l |
| 8 Nov 2024, 12:21 | 0.0028 | 0.0028 mg/l |
| 4 Oct 2024, 11:46 | 0.004 | 0.004 mg/l |
| 9 Sep 2024, 14:55 | 0.0022 | 0.0022 mg/l |
| 1 Aug 2024, 11:17 | 0.0051 | 0.0051 mg/l |
| 16 Jul 2024, 14:51 | 0.0081 | 0.0081 mg/l |
| 6 Jun 2024, 11:20 | 0.005 | 0.005 mg/l |
| 1 May 2024, 13:07 | 0.0045 | 0.0045 mg/l |
| 3 Apr 2024, 08:38 | 0.025 | 0.025 mg/l |
| 7 Mar 2024, 11:41 | 0.0047 | 0.0047 mg/l |
| 9 Feb 2024, 13:21 | 0.0069 | 0.0069 mg/l |
| 25 Jan 2024, 14:09 | 0.0054 | 0.0054 mg/l |
| 1 Dec 2023, 11:15 | 0.0084 | 0.0084 mg/l |
| 3 Nov 2023, 09:50 | 0.0034 | 0.0034 mg/l |
| 13 Oct 2023, 11:39 | 0.0022 | 0.0022 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.589 mg/l
Sampled 6 Dec 2024, 22 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Dec 2024, 09:08 | 0.589 | 0.589 mg/l |
| 8 Nov 2024, 12:21 | 0.579 | 0.579 mg/l |
| 4 Oct 2024, 11:46 | 0.559 | 0.559 mg/l |
| 9 Sep 2024, 14:55 | 0.649 | 0.649 mg/l |
| 1 Aug 2024, 11:17 | 0.599 | 0.599 mg/l |
| 16 Jul 2024, 14:51 | 0.416 | 0.416 mg/l |
| 6 Jun 2024, 11:20 | 0.659 | 0.659 mg/l |
| 1 May 2024, 13:07 | 0.559 | 0.559 mg/l |
| 3 Apr 2024, 08:38 | 0.594 | 0.594 mg/l |
| 7 Mar 2024, 11:41 | 0.779 | 0.779 mg/l |
| 9 Feb 2024, 13:21 | 1.1 | 1.1 mg/l |
| 25 Jan 2024, 14:09 | 0.919 | 0.919 mg/l |
| 1 Dec 2023, 11:15 | 0.829 | 0.829 mg/l |
| 3 Nov 2023, 09:50 | 0.619 | 0.619 mg/l |
| 13 Oct 2023, 11:39 | 0.689 | 0.689 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.016 mg/l
Sampled 6 Dec 2024, 22 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Dec 2024, 09:08 | 0.016 | 0.016 mg/l |
| 8 Nov 2024, 12:21 | 0.012 | 0.012 mg/l |
| 4 Oct 2024, 11:46 | 0.012 | 0.012 mg/l |
| 9 Sep 2024, 14:55 | 0.016 | 0.016 mg/l |
| 1 Aug 2024, 11:17 | 0.013 | 0.013 mg/l |
| 16 Jul 2024, 14:51 | 0.024 | 0.024 mg/l |
| 6 Jun 2024, 11:20 | 0.013 | 0.013 mg/l |
| 1 May 2024, 13:07 | 0.0093 | 0.0093 mg/l |
| 3 Apr 2024, 08:38 | 0.02 | 0.02 mg/l |
| 7 Mar 2024, 11:41 | 0.0096 | 0.0096 mg/l |
| 9 Feb 2024, 13:21 | 0.014 | 0.014 mg/l |
| 25 Jan 2024, 14:09 | 0.014 | 0.014 mg/l |
| 1 Dec 2023, 11:15 | 0.012 | 0.012 mg/l |
| 3 Nov 2023, 09:50 | 0.015 | 0.015 mg/l |
| 13 Oct 2023, 11:39 | 0.012 | 0.012 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
150 µS/cm
Sampled 6 Dec 2024, 22 months ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Dec 2024, 09:08 | 150 | 150 µS/cm |
| 8 Nov 2024, 12:21 | 202 | 202 µS/cm |
| 4 Oct 2024, 11:46 | 209 | 209 µS/cm |
| 9 Sep 2024, 14:55 | 201 | 201 µS/cm |
| 1 Aug 2024, 11:17 | 219 | 219 µS/cm |
| 16 Jul 2024, 14:51 | 180 | 180 µS/cm |
| 6 Jun 2024, 11:20 | 204 | 204 µS/cm |
| 1 May 2024, 13:07 | 178 | 178 µS/cm |
| 3 Apr 2024, 08:38 | 191 | 191 µS/cm |
| 7 Mar 2024, 11:41 | 177 | 177 µS/cm |
| 9 Feb 2024, 13:21 | 203 | 203 µS/cm |
| 25 Jan 2024, 14:09 | 169 | 169 µS/cm |
| 1 Dec 2023, 11:15 | 197 | 197 µS/cm |
| 3 Nov 2023, 09:50 | 172 | 172 µS/cm |
| 13 Oct 2023, 11:39 | 180 | 180 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 | 15 | Oct 2023 – Dec 2024 | 99.5% 6 Dec 2024 |
| Oxygen, Dissolved as O2 9924 | River water | 15 | Oct 2023 – Dec 2024 | 12.2 mg/l 6 Dec 2024 |
| Temperature of Water 0076 | River water | 15 | Oct 2023 – Dec 2024 | 6.5 °C 6 Dec 2024 |
| pH 0061 | River water | 15 | Oct 2023 – Dec 2024 | 7.75 6 Dec 2024 |
| Ammoniacal Nitrogen as N 0111 | River water | 15 | Oct 2023 – Dec 2024 | 0.0025 mg/l 6 Dec 2024 |
| Nitrate as N 0117 | River water | 15 | Oct 2023 – Dec 2024 | 0.589 mg/l 6 Dec 2024 |
| Orthophosphate, reactive as P 0180 | River water | 15 | Oct 2023 – Dec 2024 | 0.016 mg/l 6 Dec 2024 |
| Conductivity at 25 C 0077 | River water | 15 | Oct 2023 – Dec 2024 | 150 µS/cm 6 Dec 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 14 | Oct 2023 – Dec 2024 | 60 mg/l 6 Dec 2024 |
| Ammonia un-ionised as N 0119 | River water | 15 | Oct 2023 – Dec 2024 | 0.00002 mg/l 6 Dec 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 15 | Oct 2023 – Dec 2024 | 4.6 mg/l 6 Dec 2024 |
| Chloride 0172 | River water | 15 | Oct 2023 – Dec 2024 | 8.2 mg/l 6 Dec 2024 |
| Flow Type 2896 | River water | 5 | Jul 2024 – Dec 2024 | Moderate Flow 6 Dec 2024 |
| Nitrite as N 0118 | River water | 15 | Oct 2023 – Dec 2024 | below 0.001 mg/l 6 Dec 2024 |
| Nitrogen, Total Oxidised as N 0116 | River water | 15 | Oct 2023 – Dec 2024 | 0.59 mg/l 6 Dec 2024 |
| Phosphorus, Total as P 0348 | River water | 15 | Oct 2023 – Dec 2024 | 0.028 mg/l 6 Dec 2024 |
| Silica, reactive as SiO2 0182 | River water | 15 | Oct 2023 – Dec 2024 | 4.8 mg/l 6 Dec 2024 |
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.