Waterside Brook above the confluence with River Darwen
EA name: WATERSIDE BROOK PTC RIVER DARWEN
Environment Agency sampling point NW-88003539 · 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
- 10 Mar 2025, 10:3019 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
- 12 since 5 Apr 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 369040, 424550As published, to the nearest 10 m. Open in a map
- River, by its own name
- Its name does not give one
- River, by the map
- Davy Field BrookPlaced by position alone, on a line whose map name differs from its own, 3 m from the line.
- Next gauge downstream
- Ewood On the River Darwen · 2.6 km along the river (the path rests on a repair to the map)
- Why it was sampled
- Environmental monitoring statutory (EU directives) (12 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
103%
Sampled 10 Mar 2025, 19 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 10:30 | 103 | 103% |
| 4 Feb 2025, 13:13 | 103 | 103% |
| 14 Jan 2025, 11:51 | 105.6 | 105.6% |
| 5 Dec 2024, 11:21 | 103.5 | 103.5% |
| 6 Nov 2024, 10:01 | 100.7 | 100.7% |
| 10 Oct 2024, 09:01 | 101.5 | 101.5% |
| 5 Sep 2024, 11:55 | 102.6 | 102.6% |
| 1 Aug 2024, 10:43 | 98 | 98% |
| 5 Jul 2024, 13:08 | 99.3 | 99.3% |
| 4 Jun 2024, 13:12 | 102.9 | 102.9% |
| 3 May 2024, 13:39 | 105.8 | 105.8% |
| 5 Apr 2024, 11:43 | 101.1 | 101.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
12.6 mg/l
Sampled 10 Mar 2025, 19 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 10:30 | 12.6 | 12.6 mg/l |
| 4 Feb 2025, 13:13 | 12.6 | 12.6 mg/l |
| 14 Jan 2025, 11:51 | 13.5 | 13.5 mg/l |
| 5 Dec 2024, 11:21 | 12.4 | 12.4 mg/l |
| 6 Nov 2024, 10:01 | 11.2 | 11.2 mg/l |
| 10 Oct 2024, 09:01 | 11.6 | 11.6 mg/l |
| 5 Sep 2024, 11:55 | 10.7 | 10.7 mg/l |
| 1 Aug 2024, 10:43 | 9.47 | 9.47 mg/l |
| 5 Jul 2024, 13:08 | 10.2 | 10.2 mg/l |
| 4 Jun 2024, 13:12 | 10.7 | 10.7 mg/l |
| 3 May 2024, 13:39 | 11.4 | 11.4 mg/l |
| 5 Apr 2024, 11:43 | 11.4 | 11.4 mg/l |
Water temperature
code 0076 · °C
6.6 °C
Sampled 10 Mar 2025, 19 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 10:30 | 6.6 | 6.6 °C |
| 4 Feb 2025, 13:13 | 6.7 | 6.7 °C |
| 14 Jan 2025, 11:51 | 4.8 | 4.8 °C |
| 5 Dec 2024, 11:21 | 7.5 | 7.5 °C |
| 6 Nov 2024, 10:01 | 10.5 | 10.5 °C |
| 10 Oct 2024, 09:01 | 9.5 | 9.5 °C |
| 5 Sep 2024, 11:55 | 13.5 | 13.5 °C |
| 1 Aug 2024, 10:43 | 16.9 | 16.9 °C |
| 5 Jul 2024, 13:08 | 14.1 | 14.1 °C |
| 4 Jun 2024, 13:12 | 13.3 | 13.3 °C |
| 3 May 2024, 13:39 | 12.1 | 12.1 °C |
| 5 Apr 2024, 11:43 | 9.8 | 9.8 °C |
pH
code 0061
8.18
Sampled 10 Mar 2025, 19 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 10:30 | 8.18 | 8.18 |
| 4 Feb 2025, 13:13 | 7.99 | 7.99 |
| 14 Jan 2025, 11:51 | 7.65 | 7.65 |
| 5 Dec 2024, 11:21 | 7.69 | 7.69 |
| 6 Nov 2024, 10:01 | 7.81 | 7.81 |
| 10 Oct 2024, 09:01 | 7.75 | 7.75 |
| 5 Sep 2024, 11:55 | 7.94 | 7.94 |
| 1 Aug 2024, 10:43 | 7.96 | 7.96 |
| 5 Jul 2024, 13:08 | 7.99 | 7.99 |
| 4 Jun 2024, 13:12 | 8.47 | 8.47 |
| 3 May 2024, 13:39 | 8.37 | 8.37 |
| 5 Apr 2024, 11:43 | 7.7 | 7.7 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.055 mg/l
Sampled 10 Mar 2025, 19 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 10:30 | 0.055 | 0.055 mg/l |
| 4 Feb 2025, 13:13 | 0.1 | 0.1 mg/l |
| 14 Jan 2025, 11:51 | 0.31 | 0.31 mg/l |
| 5 Dec 2024, 11:21 | 0.3 | 0.3 mg/l |
| 6 Nov 2024, 10:01 | 0.14 | 0.14 mg/l |
| 10 Oct 2024, 09:01 | 0.069 | 0.069 mg/l |
| 5 Sep 2024, 11:55 | 0.11 | 0.11 mg/l |
| 1 Aug 2024, 10:43 | 0.48 | 0.48 mg/l |
| 5 Jul 2024, 13:08 | 0.25 | 0.25 mg/l |
| 4 Jun 2024, 13:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 3 May 2024, 13:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Apr 2024, 11:43 | 0.075 | 0.075 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.7 mg/l
Sampled 10 Mar 2025, 19 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 10:30 | 0.7 | 0.7 mg/l |
| 4 Feb 2025, 13:13 | 0.889 | 0.889 mg/l |
| 14 Jan 2025, 11:51 | 0.9 | 0.9 mg/l |
| 5 Dec 2024, 11:21 | 0.879 | 0.879 mg/l |
| 6 Nov 2024, 10:01 | 0.662 | 0.662 mg/l |
| 10 Oct 2024, 09:01 | 0.659 | 0.659 mg/l |
| 5 Sep 2024, 11:55 | 0.498 | 0.498 mg/l |
| 1 Aug 2024, 10:43 | 0.698 | 0.698 mg/l |
| 5 Jul 2024, 13:08 | 0.507 | 0.507 mg/l |
| 4 Jun 2024, 13:12 | 0.703 | 0.703 mg/l |
| 3 May 2024, 13:39 | 0.404 | 0.404 mg/l |
| 5 Apr 2024, 11:43 | 0.544 | 0.544 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.056 mg/l
Sampled 10 Mar 2025, 19 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 10:30 | 0.056 | 0.056 mg/l |
| 4 Feb 2025, 13:13 | 0.057 | 0.057 mg/l |
| 14 Jan 2025, 11:51 | 0.051 | 0.051 mg/l |
| 5 Dec 2024, 11:21 | 0.091 | 0.091 mg/l |
| 6 Nov 2024, 10:01 | 0.096 | 0.096 mg/l |
| 10 Oct 2024, 09:01 | 0.071 | 0.071 mg/l |
| 5 Sep 2024, 11:55 | 0.091 | 0.091 mg/l |
| 1 Aug 2024, 10:43 | 0.13 | 0.13 mg/l |
| 5 Jul 2024, 13:08 | 0.13 | 0.13 mg/l |
| 4 Jun 2024, 13:12 | 0.035 | 0.035 mg/l |
| 3 May 2024, 13:39 | 0.029 | 0.029 mg/l |
| 5 Apr 2024, 11:43 | 0.041 | 0.041 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
348 µS/cm
Sampled 10 Mar 2025, 19 months ago · 12 results banked
Every result (12)
| Sampled | Result as published | Reads as |
|---|---|---|
| 10 Mar 2025, 10:30 | 348 | 348 µS/cm |
| 4 Feb 2025, 13:13 | 277 | 277 µS/cm |
| 14 Jan 2025, 11:51 | 264 | 264 µS/cm |
| 5 Dec 2024, 11:21 | 190 | 190 µS/cm |
| 6 Nov 2024, 10:01 | 272 | 272 µS/cm |
| 10 Oct 2024, 09:01 | 212 | 212 µS/cm |
| 5 Sep 2024, 11:55 | 352 | 352 µS/cm |
| 1 Aug 2024, 10:43 | 311 | 311 µS/cm |
| 5 Jul 2024, 13:08 | 321 | 321 µS/cm |
| 4 Jun 2024, 13:12 | 307 | 307 µS/cm |
| 3 May 2024, 13:39 | 147 | 147 µS/cm |
| 5 Apr 2024, 11:43 | 164 | 164 µS/cm |
Everything measured here
59 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 59 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 12 | Apr 2024 – Mar 2025 | 103% 10 Mar 2025 |
| Oxygen, Dissolved as O2 9924 | River water | 12 | Apr 2024 – Mar 2025 | 12.6 mg/l 10 Mar 2025 |
| Temperature of Water 0076 | River water | 12 | Apr 2024 – Mar 2025 | 6.6 °C 10 Mar 2025 |
| pH 0061 | River water | 12 | Apr 2024 – Mar 2025 | 8.18 10 Mar 2025 |
| Ammoniacal Nitrogen as N 0111 | River water | 12 | Apr 2024 – Mar 2025 | 0.055 mg/l 10 Mar 2025 |
| Nitrate as N 0117 | River water | 12 | Apr 2024 – Mar 2025 | 0.7 mg/l 10 Mar 2025 |
| Orthophosphate, reactive as P 0180 | River water | 12 | Apr 2024 – Mar 2025 | 0.056 mg/l 10 Mar 2025 |
| Conductivity at 25 C 0077 | River water | 12 | Apr 2024 – Mar 2025 | 348 µS/cm 10 Mar 2025 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | May 2024 – May 2024 | below 0.004 µg/l 3 May 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 3 May 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | May 2024 – May 2024 | 0.0019 µg/l 3 May 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 12 | Apr 2024 – Mar 2025 | 80 mg/l 10 Mar 2025 |
| Ammonia un-ionised as N 0119 | River water | 12 | Apr 2024 – Mar 2025 | 0.00078 mg/l 10 Mar 2025 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| Nitrite as N 0118 | River water | 12 | Apr 2024 – Mar 2025 | 0.01 mg/l 10 Mar 2025 |
| Nitrogen, Total Oxidised as N 0116 | River water | 12 | Apr 2024 – Mar 2025 | 0.71 mg/l 10 Mar 2025 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | May 2024 – May 2024 | 0.002 µg/l 3 May 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | May 2024 – May 2024 | 0.0015 µg/l 3 May 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 3 May 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | May 2024 – May 2024 | 0.001 µg/l 3 May 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | May 2024 – May 2024 | 0.00078 µg/l 3 May 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | May 2024 – May 2024 | 0.00063 µg/l 3 May 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | May 2024 – May 2024 | 0.0033 µg/l 3 May 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | May 2024 – May 2024 | below 0.0005 µg/l 3 May 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | May 2024 – May 2024 | below 0.001 µg/l 3 May 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | May 2024 – May 2024 | below 0.006 µg/l 3 May 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | May 2024 – May 2024 | below 0.005 µg/l 3 May 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | May 2024 – May 2024 | below 0.004 µg/l 3 May 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | May 2024 – May 2024 | below 0.002 µg/l 3 May 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.