Calder at Crow Wood House below Burnley
EA name: CALDER @ CROW WOOD HOUSE BELOW BURNLEY (also listed as “RIVER CALDER AT CROW WOOD HOUSE BELOW BURNLEY”)
Environment Agency sampling point NW-88003479 · 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 Mar 2025, 12:0420 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 27 Oct 2026 and had nothing newer.
- Samples banked
- 18 since 18 Oct 2023 Imported periods: 1 Oct 2023 – 27 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 383200, 433800As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Calder
- River, by the map
- River CalderPlaced on the river its name gives, 49 m from the line.
- Next gauge downstream
- Padiham Town Centre On the River Calder · 6.3 km along the river
- Nearest gauge upstream
- Active Way On the River Calder · 1.3 km along the riverThompson Park On the River Brun · 3.1 km along the river
- Why it was sampled
- Monitoring (national agency policy) (18 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
116%
Sampled 12 Mar 2025, 20 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Mar 2025, 12:04 | 116 | 116% |
| 21 Feb 2025, 10:10 | 105.3 | 105.3% |
| 31 Jan 2025, 10:40 | 101.6 | 101.6% |
| 11 Dec 2024, 13:35 | 102.7 | 102.7% |
| 26 Nov 2024, 11:25 | 104.5 | 104.5% |
| 16 Oct 2024, 11:39 | 100.6 | 100.6% |
| 17 Sep 2024, 10:47 | 100.5 | 100.5% |
| 21 Aug 2024, 12:42 | 107.7 | 107.7% |
| 16 Jul 2024, 13:10 | 99.8 | 99.8% |
| 18 Jun 2024, 10:21 | 103.5 | 103.5% |
| 16 May 2024, 11:43 | 101.8 | 101.8% |
| 19 Apr 2024, 12:27 | 106.6 | 106.6% |
| 20 Mar 2024, 12:27 | 103.7 | 103.7% |
| 21 Feb 2024, 13:02 | 103.7 | 103.7% |
| 30 Jan 2024, 11:43 | 102.4 | 102.4% |
| 11 Dec 2023, 10:08 | 100.1 | 100.1% |
| 21 Nov 2023, 11:02 | 100.2 | 100.2% |
| 18 Oct 2023, 09:23 | 99.9 | 99.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
14.5 mg/l
Sampled 12 Mar 2025, 20 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Mar 2025, 12:04 | 14.5 | 14.5 mg/l |
| 21 Feb 2025, 10:10 | 12.4 | 12.4 mg/l |
| 31 Jan 2025, 10:40 | 13 | 13 mg/l |
| 11 Dec 2024, 13:35 | 12.6 | 12.6 mg/l |
| 26 Nov 2024, 11:25 | 12.6 | 12.6 mg/l |
| 16 Oct 2024, 11:39 | 10.7 | 10.7 mg/l |
| 17 Sep 2024, 10:47 | 10.8 | 10.8 mg/l |
| 21 Aug 2024, 12:42 | 10.9 | 10.9 mg/l |
| 16 Jul 2024, 13:10 | 10 | 10 mg/l |
| 18 Jun 2024, 10:21 | 11 | 11 mg/l |
| 16 May 2024, 11:43 | 10.5 | 10.5 mg/l |
| 19 Apr 2024, 12:27 | 12.1 | 12.1 mg/l |
| 20 Mar 2024, 12:27 | 11.7 | 11.7 mg/l |
| 21 Feb 2024, 13:02 | 11.9 | 11.9 mg/l |
| 30 Jan 2024, 11:43 | 12.5 | 12.5 mg/l |
| 11 Dec 2023, 10:08 | 12.2 | 12.2 mg/l |
| 21 Nov 2023, 11:02 | 11.6 | 11.6 mg/l |
| 18 Oct 2023, 09:23 | 11.3 | 11.3 mg/l |
Water temperature
code 0076 · °C
5.7 °C
Sampled 12 Mar 2025, 20 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Mar 2025, 12:04 | 5.7 | 5.7 °C |
| 21 Feb 2025, 10:10 | 8.3 | 8.3 °C |
| 31 Jan 2025, 10:40 | 5 | 5 °C |
| 11 Dec 2024, 13:35 | 6.4 | 6.4 °C |
| 26 Nov 2024, 11:25 | 7.1 | 7.1 °C |
| 16 Oct 2024, 11:39 | 12.6 | 12.6 °C |
| 17 Sep 2024, 10:47 | 12.1 | 12.1 °C |
| 21 Aug 2024, 12:42 | 14.8 | 14.8 °C |
| 16 Jul 2024, 13:10 | 15 | 15 °C |
| 18 Jun 2024, 10:21 | 12.6 | 12.6 °C |
| 16 May 2024, 11:43 | 13.9 | 13.9 °C |
| 19 Apr 2024, 12:27 | 9.8 | 9.8 °C |
| 20 Mar 2024, 12:27 | 9.8 | 9.8 °C |
| 21 Feb 2024, 13:02 | 9.1 | 9.1 °C |
| 30 Jan 2024, 11:43 | 6.8 | 6.8 °C |
| 11 Dec 2023, 10:08 | 6.7 | 6.7 °C |
| 21 Nov 2023, 11:02 | 8.9 | 8.9 °C |
| 18 Oct 2023, 09:23 | 9.7 | 9.7 °C |
pH
code 0061
8.71
Sampled 12 Mar 2025, 20 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Mar 2025, 12:04 | 8.71 | 8.71 |
| 21 Feb 2025, 10:10 | 8.18 | 8.18 |
| 31 Jan 2025, 10:40 | 8.03 | 8.03 |
| 11 Dec 2024, 13:35 | 8.27 | 8.27 |
| 26 Nov 2024, 11:25 | 8.02 | 8.02 |
| 16 Oct 2024, 11:39 | 7.94 | 7.94 |
| 17 Sep 2024, 10:47 | 8.07 | 8.07 |
| 21 Aug 2024, 12:42 | 8.8 | 8.8 |
| 16 Jul 2024, 13:10 | 8.17 | 8.17 |
| 18 Jun 2024, 10:21 | 8.25 | 8.25 |
| 16 May 2024, 11:43 | 8.3 | 8.3 |
| 19 Apr 2024, 12:27 | 8.24 | 8.24 |
| 20 Mar 2024, 12:27 | 8.06 | 8.06 |
| 21 Feb 2024, 13:02 | 7.82 | 7.82 |
| 30 Jan 2024, 11:43 | 8.28 | 8.28 |
| 11 Dec 2023, 10:08 | 7.67 | 7.67 |
| 21 Nov 2023, 11:02 | 7.87 | 7.87 |
| 18 Oct 2023, 09:23 | 7.93 | 7.93 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.048 mg/l
Sampled 12 Mar 2025, 20 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Mar 2025, 12:04 | 0.048 | 0.048 mg/l |
| 21 Feb 2025, 10:10 | 0.05 | 0.05 mg/l |
| 31 Jan 2025, 10:40 | 0.073 | 0.073 mg/l |
| 11 Dec 2024, 13:35 | 0.06 | 0.06 mg/l |
| 26 Nov 2024, 11:25 | 0.037 | 0.037 mg/l |
| 16 Oct 2024, 11:39 | 0.07 | 0.07 mg/l |
| 17 Sep 2024, 10:47 | <0.03 | below 0.03 mg/l (not detected above this) |
| 21 Aug 2024, 12:42 | 0.045 | 0.045 mg/l |
| 16 Jul 2024, 13:10 | 0.032 | 0.032 mg/l |
| 18 Jun 2024, 10:21 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 May 2024, 11:43 | 0.07 | 0.07 mg/l |
| 19 Apr 2024, 12:27 | 0.037 | 0.037 mg/l |
| 20 Mar 2024, 12:27 | 0.049 | 0.049 mg/l |
| 21 Feb 2024, 13:02 | 0.074 | 0.074 mg/l |
| 30 Jan 2024, 11:43 | 0.042 | 0.042 mg/l |
| 11 Dec 2023, 10:08 | 0.048 | 0.048 mg/l |
| 21 Nov 2023, 11:02 | 0.046 | 0.046 mg/l |
| 18 Oct 2023, 09:23 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.65 mg/l
Sampled 12 Mar 2025, 20 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Mar 2025, 12:04 | 0.65 | 0.65 mg/l |
| 21 Feb 2025, 10:10 | 0.742 | 0.742 mg/l |
| 31 Jan 2025, 10:40 | 0.963 | 0.963 mg/l |
| 11 Dec 2024, 13:35 | 1.09 | 1.09 mg/l |
| 26 Nov 2024, 11:25 | 1.09 | 1.09 mg/l |
| 16 Oct 2024, 11:39 | 0.629 | 0.629 mg/l |
| 17 Sep 2024, 10:47 | 0.653 | 0.653 mg/l |
| 21 Aug 2024, 12:42 | 0.541 | 0.541 mg/l |
| 16 Jul 2024, 13:10 | 0.796 | 0.796 mg/l |
| 18 Jun 2024, 10:21 | 0.685 | 0.685 mg/l |
| 16 May 2024, 11:43 | 0.556 | 0.556 mg/l |
| 19 Apr 2024, 12:27 | 0.543 | 0.543 mg/l |
| 20 Mar 2024, 12:27 | 0.612 | 0.612 mg/l |
| 21 Feb 2024, 13:02 | 0.664 | 0.664 mg/l |
| 30 Jan 2024, 11:43 | 0.893 | 0.893 mg/l |
| 11 Dec 2023, 10:08 | 0.995 | 0.995 mg/l |
| 21 Nov 2023, 11:02 | 0.912 | 0.912 mg/l |
| 18 Oct 2023, 09:23 | 0.793 | 0.793 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.014 mg/l
Sampled 12 Mar 2025, 20 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Mar 2025, 12:04 | 0.014 | 0.014 mg/l |
| 21 Feb 2025, 10:10 | 0.024 | 0.024 mg/l |
| 31 Jan 2025, 10:40 | 0.024 | 0.024 mg/l |
| 11 Dec 2024, 13:35 | 0.026 | 0.026 mg/l |
| 26 Nov 2024, 11:25 | 0.036 | 0.036 mg/l |
| 16 Oct 2024, 11:39 | 0.048 | 0.048 mg/l |
| 17 Sep 2024, 10:47 | 0.04 | 0.04 mg/l |
| 21 Aug 2024, 12:42 | 0.039 | 0.039 mg/l |
| 16 Jul 2024, 13:10 | 0.036 | 0.036 mg/l |
| 18 Jun 2024, 10:21 | 0.019 | 0.019 mg/l |
| 16 May 2024, 11:43 | 0.062 | 0.062 mg/l |
| 19 Apr 2024, 12:27 | 0.016 | 0.016 mg/l |
| 20 Mar 2024, 12:27 | 0.015 | 0.015 mg/l |
| 21 Feb 2024, 13:02 | 0.034 | 0.034 mg/l |
| 30 Jan 2024, 11:43 | 0.032 | 0.032 mg/l |
| 11 Dec 2023, 10:08 | 0.024 | 0.024 mg/l |
| 21 Nov 2023, 11:02 | 0.02 | 0.02 mg/l |
| 18 Oct 2023, 09:23 | 0.027 | 0.027 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
371 µS/cm
Sampled 12 Mar 2025, 20 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Mar 2025, 12:04 | 371 | 371 µS/cm |
| 21 Feb 2025, 10:10 | 293 | 293 µS/cm |
| 31 Jan 2025, 10:40 | 364 | 364 µS/cm |
| 11 Dec 2024, 13:35 | 294 | 294 µS/cm |
| 26 Nov 2024, 11:25 | 247 | 247 µS/cm |
| 16 Oct 2024, 11:39 | 290 | 290 µS/cm |
| 17 Sep 2024, 10:47 | 326 | 326 µS/cm |
| 21 Aug 2024, 12:42 | 358 | 358 µS/cm |
| 16 Jul 2024, 13:10 | 337 | 337 µS/cm |
| 18 Jun 2024, 10:21 | 314 | 314 µS/cm |
| 16 May 2024, 11:43 | 292 | 292 µS/cm |
| 19 Apr 2024, 12:27 | 258 | 258 µS/cm |
| 20 Mar 2024, 12:27 | 234 | 234 µS/cm |
| 21 Feb 2024, 13:02 | 172 | 172 µS/cm |
| 30 Jan 2024, 11:43 | 233 | 233 µS/cm |
| 11 Dec 2023, 10:08 | 183 | 183 µS/cm |
| 21 Nov 2023, 11:02 | 212 | 212 µS/cm |
| 18 Oct 2023, 09:23 | 285 | 285 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 | 18 | Oct 2023 – Mar 2025 | 116% 12 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 18 | Oct 2023 – Mar 2025 | 14.5 mg/l 12 Mar 2025 |
| Temperature of Water 0076 | River water | 18 | Oct 2023 – Mar 2025 | 5.7 °C 12 Mar 2025 |
| pH 0061 | River water | 18 | Oct 2023 – Mar 2025 | 8.71 12 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 18 | Oct 2023 – Mar 2025 | 0.048 mg/l 12 Mar 2025 |
| Nitrate as N 0117 | River water | 18 | Oct 2023 – Mar 2025 | 0.65 mg/l 12 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Oct 2023 – Mar 2025 | 0.014 mg/l 12 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 18 | Oct 2023 – Mar 2025 | 371 µS/cm 12 Mar 2025 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 18 | Oct 2023 – Mar 2025 | 120 mg/l 12 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 18 | Oct 2023 – Mar 2025 | 0.00064 mg/l 12 Mar 2025 |
| BOD : 5 Day ATU 0085 | River water | 14 | Feb 2024 – Mar 2025 | 1.7 mg/l 12 Mar 2025 |
| Nitrite as N 0118 | River water | 18 | Oct 2023 – Mar 2025 | 0.01 mg/l 12 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Oct 2023 – Mar 2025 | 0.66 mg/l 12 Mar 2025 |
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.