River Calder upstream of Lancaster Canal
EA name: RIVER CALDER U/S LANCASTER CANAL (also listed as “RSN0476 RIVER CALDER U/S LANCASTER CANAL”)
Environment Agency sampling point NW-RSN0476 · 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
- 1 Sep 2026, 09:5730 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 21 since 8 Jan 2025 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 350797, 443447As published, to the nearest 1 m. Open in a map
- River, by its own name
- Calder
- River, by the map
- River CalderPlaced on the river its name gives, 0 m from the line.
- Next gauge downstream
- Kirkland Bridge On the River Wyre · 2.3 km along the river (the path rests on a repair to the map)
- Why it was sampled
- Monitoring (national agency policy) (21 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
100%
Sampled 1 Sep 2026, 30 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 09:57 | 100 | 100% |
| 18 Aug 2026, 10:56 | 103.9 | 103.9% |
| 3 Jul 2026, 10:54 | 101 | 101% |
| 4 Jun 2026, 12:02 | 102.4 | 102.4% |
| 5 May 2026, 10:57 | 105.9 | 105.9% |
| 30 Apr 2026, 13:57 | 112.4 | 112.4% |
| 27 Mar 2026, 11:52 | 103.1 | 103.1% |
| 25 Feb 2026, 09:45 | 104.1 | 104.1% |
| 21 Jan 2026, 12:06 | 101.4 | 101.4% |
| 15 Dec 2025, 10:44 | 101.6 | 101.6% |
| 3 Nov 2025, 13:39 | 98.9 | 98.9% |
| 9 Oct 2025, 12:00 | 97.6 | 97.6% |
| 3 Sep 2025, 11:32 | 106.3 | 106.3% |
| 11 Aug 2025, 14:38 | 103.9 | 103.9% |
| 18 Jul 2025, 11:25 | 100.9 | 100.9% |
| 26 Jun 2025, 12:50 | 100.9 | 100.9% |
| 9 May 2025, 10:54 | 103.2 | 103.2% |
| 4 Apr 2025, 14:23 | 124.3 | 124.3% |
| 5 Mar 2025, 12:35 | 112.7 | 112.7% |
| 7 Feb 2025, 10:25 | 101.8 | 101.8% |
| 8 Jan 2025, 10:41 | 101.1 | 101.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
10.3 mg/l
Sampled 1 Sep 2026, 30 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 09:57 | 10.3 | 10.3 mg/l |
| 18 Aug 2026, 10:56 | 10.2 | 10.2 mg/l |
| 3 Jul 2026, 10:54 | 10.2 | 10.2 mg/l |
| 4 Jun 2026, 12:02 | 11.1 | 11.1 mg/l |
| 5 May 2026, 10:57 | 11.9 | 11.9 mg/l |
| 30 Apr 2026, 13:57 | 11.4 | 11.4 mg/l |
| 27 Mar 2026, 11:52 | 12.2 | 12.2 mg/l |
| 25 Feb 2026, 09:45 | 12.3 | 12.3 mg/l |
| 21 Jan 2026, 12:06 | 12.7 | 12.7 mg/l |
| 15 Dec 2025, 10:44 | 11.8 | 11.8 mg/l |
| 3 Nov 2025, 13:39 | 10.9 | 10.9 mg/l |
| 9 Oct 2025, 12:00 | 10.4 | 10.4 mg/l |
| 3 Sep 2025, 11:32 | 10.6 | 10.6 mg/l |
| 11 Aug 2025, 14:38 | 9.73 | 9.73 mg/l |
| 18 Jul 2025, 11:25 | 9.75 | 9.75 mg/l |
| 26 Jun 2025, 12:50 | 9.85 | 9.85 mg/l |
| 9 May 2025, 10:54 | 11.5 | 11.5 mg/l |
| 4 Apr 2025, 14:23 | 13.2 | 13.2 mg/l |
| 5 Mar 2025, 12:35 | 13.6 | 13.6 mg/l |
| 7 Feb 2025, 10:25 | 13.4 | 13.4 mg/l |
| 8 Jan 2025, 10:41 | 13.7 | 13.7 mg/l |
Water temperature
code 0076 · °C
13.7 °C
Sampled 1 Sep 2026, 30 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 09:57 | 13.7 | 13.7 °C |
| 18 Aug 2026, 10:56 | 15.9 | 15.9 °C |
| 3 Jul 2026, 10:54 | 14.7 | 14.7 °C |
| 4 Jun 2026, 12:02 | 11.5 | 11.5 °C |
| 5 May 2026, 10:57 | 10 | 10 °C |
| 30 Apr 2026, 13:57 | 14.6 | 14.6 °C |
| 27 Mar 2026, 11:52 | 7.9 | 7.9 °C |
| 25 Feb 2026, 09:45 | 7.9 | 7.9 °C |
| 21 Jan 2026, 12:06 | 5.7 | 5.7 °C |
| 15 Dec 2025, 10:44 | 8.7 | 8.7 °C |
| 3 Nov 2025, 13:39 | 11 | 11 °C |
| 9 Oct 2025, 12:00 | 12.3 | 12.3 °C |
| 3 Sep 2025, 11:32 | 15.2 | 15.2 °C |
| 11 Aug 2025, 14:38 | 18.4 | 18.4 °C |
| 18 Jul 2025, 11:25 | 16.9 | 16.9 °C |
| 26 Jun 2025, 12:50 | 16.4 | 16.4 °C |
| 9 May 2025, 10:54 | 10.6 | 10.6 °C |
| 4 Apr 2025, 14:23 | 12.7 | 12.7 °C |
| 5 Mar 2025, 12:35 | 7.3 | 7.3 °C |
| 7 Feb 2025, 10:25 | 3.7 | 3.7 °C |
| 8 Jan 2025, 10:41 | 2.7 | 2.7 °C |
pH
code 0061
7.72
Sampled 1 Sep 2026, 30 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 09:57 | 7.72 | 7.72 |
| 18 Aug 2026, 10:56 | 7.98 | 7.98 |
| 3 Jul 2026, 10:54 | 8.23 | 8.23 |
| 4 Jun 2026, 12:02 | 7.45 | 7.45 |
| 5 May 2026, 10:57 | 8.51 | 8.51 |
| 30 Apr 2026, 13:57 | 8.82 | 8.82 |
| 27 Mar 2026, 11:52 | 7.78 | 7.78 |
| 25 Feb 2026, 09:45 | 7.8 | 7.8 |
| 21 Jan 2026, 12:06 | 7.53 | 7.53 |
| 15 Dec 2025, 10:44 | 7.71 | 7.71 |
| 3 Nov 2025, 13:39 | 7.44 | 7.44 |
| 9 Oct 2025, 12:00 | 7.84 | 7.84 |
| 3 Sep 2025, 11:32 | 7.65 | 7.65 |
| 11 Aug 2025, 14:38 | 8.14 | 8.14 |
| 18 Jul 2025, 11:25 | 7.94 | 7.94 |
| 26 Jun 2025, 12:50 | 8.2 | 8.2 |
| 9 May 2025, 10:54 | 7.91 | 7.91 |
| 4 Apr 2025, 14:23 | 8.98 | 8.98 |
| 5 Mar 2025, 12:35 | 8.79 | 8.79 |
| 7 Feb 2025, 10:25 | 8.04 | 8.04 |
| 8 Jan 2025, 10:41 | 8.02 | 8.02 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.014 mg/l
Sampled 1 Sep 2026, 30 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 09:57 | 0.014 | 0.014 mg/l |
| 18 Aug 2026, 10:56 | 0.0035 | 0.0035 mg/l |
| 3 Jul 2026, 10:54 | 0.0065 | 0.0065 mg/l |
| 4 Jun 2026, 12:02 | 0.21 | 0.21 mg/l |
| 5 May 2026, 10:57 | 0.002 | 0.002 mg/l |
| 30 Apr 2026, 13:57 | 0.0034 | 0.0034 mg/l |
| 27 Mar 2026, 11:52 | 0.016 | 0.016 mg/l |
| 25 Feb 2026, 09:45 | 0.0054 | 0.0054 mg/l |
| 21 Jan 2026, 12:06 | 0.015 | 0.015 mg/l |
| 15 Dec 2025, 10:44 | 0.029 | 0.029 mg/l |
| 3 Nov 2025, 13:39 | 0.021 | 0.021 mg/l |
| 9 Oct 2025, 12:00 | 0.002 | 0.002 mg/l |
| 3 Sep 2025, 11:32 | 0.0037 | 0.0037 mg/l |
| 11 Aug 2025, 14:38 | 0.0044 | 0.0044 mg/l |
| 18 Jul 2025, 11:25 | 0.013 | 0.013 mg/l |
| 26 Jun 2025, 12:50 | 0.016 | 0.016 mg/l |
| 9 May 2025, 10:54 | 0.014 | 0.014 mg/l |
| 4 Apr 2025, 14:23 | 0.011 | 0.011 mg/l |
| 5 Mar 2025, 12:35 | 0.0085 | 0.0085 mg/l |
| 7 Feb 2025, 10:25 | 0.0073 | 0.0073 mg/l |
| 8 Jan 2025, 10:41 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.318 mg/l
Sampled 1 Sep 2026, 30 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 09:57 | 0.318 | 0.318 mg/l |
| 18 Aug 2026, 10:56 | 0.983 | 0.983 mg/l |
| 3 Jul 2026, 10:54 | 0.338 | 0.338 mg/l |
| 4 Jun 2026, 12:02 | 0.216 | 0.216 mg/l |
| 5 May 2026, 10:57 | 0.299 | 0.299 mg/l |
| 30 Apr 2026, 13:57 | 0.259 | 0.259 mg/l |
| 27 Mar 2026, 11:52 | 0.549 | 0.549 mg/l |
| 25 Feb 2026, 09:45 | 1.2 | 1.2 mg/l |
| 21 Jan 2026, 12:06 | 0.877 | 0.877 mg/l |
| 15 Dec 2025, 10:44 | 0.597 | 0.597 mg/l |
| 3 Nov 2025, 13:39 | 0.786 | 0.786 mg/l |
| 9 Oct 2025, 12:00 | 0.747 | 0.747 mg/l |
| 3 Sep 2025, 11:32 | 0.636 | 0.636 mg/l |
| 11 Aug 2025, 14:38 | 0.329 | 0.329 mg/l |
| 18 Jul 2025, 11:25 | 0.309 | 0.309 mg/l |
| 26 Jun 2025, 12:50 | 0.378 | 0.378 mg/l |
| 9 May 2025, 10:54 | 0.327 | 0.327 mg/l |
| 4 Apr 2025, 14:23 | 0.234 | 0.234 mg/l |
| 5 Mar 2025, 12:35 | 0.448 | 0.448 mg/l |
| 7 Feb 2025, 10:25 | 0.719 | 0.719 mg/l |
| 8 Jan 2025, 10:41 | 1.1 | 1.1 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.013 mg/l
Sampled 1 Sep 2026, 30 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 09:57 | 0.013 | 0.013 mg/l |
| 18 Aug 2026, 10:56 | 0.018 | 0.018 mg/l |
| 3 Jul 2026, 10:54 | 0.01 | 0.01 mg/l |
| 4 Jun 2026, 12:02 | 0.019 | 0.019 mg/l |
| 5 May 2026, 10:57 | 0.0031 | 0.0031 mg/l |
| 30 Apr 2026, 13:57 | 0.0017 | 0.0017 mg/l |
| 27 Mar 2026, 11:52 | 0.025 | 0.025 mg/l |
| 25 Feb 2026, 09:45 | 0.018 | 0.018 mg/l |
| 21 Jan 2026, 12:06 | 0.029 | 0.029 mg/l |
| 15 Dec 2025, 10:44 | 0.034 | 0.034 mg/l |
| 3 Nov 2025, 13:39 | 0.042 | 0.042 mg/l |
| 9 Oct 2025, 12:00 | 0.02 | 0.02 mg/l |
| 3 Sep 2025, 11:32 | 0.0097 | 0.0097 mg/l |
| 11 Aug 2025, 14:38 | 0.031 | 0.031 mg/l |
| 18 Jul 2025, 11:25 | 0.031 | 0.031 mg/l |
| 26 Jun 2025, 12:50 | 0.03 | 0.03 mg/l |
| 9 May 2025, 10:54 | 0.026 | 0.026 mg/l |
| 4 Apr 2025, 14:23 | 0.015 | 0.015 mg/l |
| 5 Mar 2025, 12:35 | 0.015 | 0.015 mg/l |
| 7 Feb 2025, 10:25 | 0.013 | 0.013 mg/l |
| 8 Jan 2025, 10:41 | 0.02 | 0.02 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
114 µS/cm
Sampled 1 Sep 2026, 30 days ago · 21 results banked
Every result (21)
| Sampled | Result as published | Reads as |
|---|---|---|
| 1 Sep 2026, 09:57 | 114 | 114 µS/cm |
| 18 Aug 2026, 10:56 | 175 | 175 µS/cm |
| 3 Jul 2026, 10:54 | 125 | 125 µS/cm |
| 4 Jun 2026, 12:02 | 65 | 65 µS/cm |
| 5 May 2026, 10:57 | 138 | 138 µS/cm |
| 30 Apr 2026, 13:57 | 135 | 135 µS/cm |
| 27 Mar 2026, 11:52 | 55 | 55 µS/cm |
| 25 Feb 2026, 09:45 | 134 | 134 µS/cm |
| 21 Jan 2026, 12:06 | 93 | 93 µS/cm |
| 15 Dec 2025, 10:44 | 71 | 71 µS/cm |
| 3 Nov 2025, 13:39 | 83 | 83 µS/cm |
| 9 Oct 2025, 12:00 | 143 | 143 µS/cm |
| 3 Sep 2025, 11:32 | 138 | 138 µS/cm |
| 11 Aug 2025, 14:38 | 138 | 138 µS/cm |
| 18 Jul 2025, 11:25 | 146 | 146 µS/cm |
| 26 Jun 2025, 12:50 | 143 | 143 µS/cm |
| 9 May 2025, 10:54 | 158 | 158 µS/cm |
| 4 Apr 2025, 14:23 | 228 | 228 µS/cm |
| 5 Mar 2025, 12:35 | 154 | 154 µS/cm |
| 7 Feb 2025, 10:25 | 155 | 155 µS/cm |
| 8 Jan 2025, 10:41 | 258 | 258 µS/cm |
Everything measured here
20 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 20 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 21 | Jan 2025 – Sep 2026 | 100% 1 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 21 | Jan 2025 – Sep 2026 | 10.3 mg/l 1 Sep 2026 |
| Temperature of Water 0076 | River water | 21 | Jan 2025 – Sep 2026 | 13.7 °C 1 Sep 2026 |
| pH 0061 | River water | 21 | Jan 2025 – Sep 2026 | 7.72 1 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 21 | Jan 2025 – Sep 2026 | 0.014 mg/l 1 Sep 2026 |
| Nitrate as N 0117 | River water | 21 | Jan 2025 – Sep 2026 | 0.318 mg/l 1 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 21 | Jan 2025 – Sep 2026 | 0.013 mg/l 1 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 21 | Jan 2025 – Sep 2026 | 114 µS/cm 1 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 21 | Jan 2025 – Sep 2026 | 33 mg/l 1 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 21 | Jan 2025 – Sep 2026 | 0.00018 mg/l 1 Sep 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 19 | Jan 2025 – Sep 2026 | 15 mg/l 1 Sep 2026 |
| Chloride 0172 | River water | 21 | Jan 2025 – Sep 2026 | 10 mg/l 1 Sep 2026 |
| Flow Type 2896 | River water | 18 | Jan 2025 – Sep 2026 | Moderate Flow 1 Sep 2026 |
| LCMS Screen : Semi Quantitative 7299 | River water | 3 | Jan 2026 – Jul 2026 | 1 text result 3 Jul 2026 |
| Nitrite as N 0118 | River water | 21 | Jan 2025 – Sep 2026 | below 0.002 mg/l 1 Sep 2026 |
| Nitrogen, Total as N 9686 | River water | 18 | Jan 2025 – Jun 2026 | 1.9 mg/l 4 Jun 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 21 | Jan 2025 – Sep 2026 | 0.32 mg/l 1 Sep 2026 |
| Phosphorus, Total as P 0348 | River water | 21 | Jan 2025 – Sep 2026 | 0.034 mg/l 1 Sep 2026 |
| Silica, reactive as SiO2 0182 | River water | 21 | Jan 2025 – Sep 2026 | 5.7 mg/l 1 Sep 2026 |
| Solids, Suspended at 105 C 0135 | River water | 10 | Dec 2025 – Sep 2026 | 3.8 mg/l 1 Sep 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.