River Duddon at Duddon Bridge
EA name: RIVER DUDDON AT DUDDON BRIDGE
Environment Agency sampling point NW-88004959 · 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
- 11 Sep 2026, 12:3720 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 42 since 20 Jun 2024 Imported periods: 1 Oct 2023 – 30 Sep 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Planned investigation (local monitoring)
- Where
- National Grid 319919, 488160As published, to the nearest 1 m. Open in a map
- River, by its own name
- Duddon
- River, by the map
- River DuddonPlaced on the river its name gives, 8 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Nearest gauge upstream
- Duddon Hall On the River Duddon · 1.6 km along the river
- Why it was sampled
- Monitoring (national agency policy) (24 samples)
Planned investigation (local monitoring) (18 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
100.2%
Sampled 28 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 10:05 | 100.2 | 100.2% |
| 10 Apr 2026, 14:53 | 105.5 | 105.5% |
| 12 Mar 2026, 11:47 | 102.2 | 102.2% |
| 18 Feb 2026, 13:43 | 102.2 | 102.2% |
| 30 Jan 2026, 12:49 | 98.6 | 98.6% |
| 16 Dec 2025, 13:39 | 103.2 | 103.2% |
| 18 Nov 2025, 12:40 | 102 | 102% |
| 17 Oct 2025, 13:02 | 101 | 101% |
| 18 Sep 2025, 12:58 | 102.1 | 102.1% |
| 13 Aug 2025, 13:17 | 108.2 | 108.2% |
| 23 Jul 2025, 10:22 | 102.3 | 102.3% |
| 11 Jun 2025, 09:41 | 102.4 | 102.4% |
| 14 May 2025, 13:04 | 110.4 | 110.4% |
| 22 Apr 2025, 09:42 | 99.4 | 99.4% |
| 3 Mar 2025, 15:01 | 101.6 | 101.6% |
| 11 Feb 2025, 10:43 | 99.2 | 99.2% |
| 21 Jan 2025, 14:12 | 102.6 | 102.6% |
| 10 Dec 2024, 11:57 | 103.6 | 103.6% |
| 25 Nov 2024, 12:42 | 98 | 98% |
| 15 Oct 2024, 11:21 | 101.8 | 101.8% |
| 20 Sep 2024, 11:24 | 98.9 | 98.9% |
| 23 Aug 2024, 12:24 | 100.6 | 100.6% |
| 17 Jul 2024, 14:06 | 104.6 | 104.6% |
| 20 Jun 2024, 10:25 | 104.4 | 104.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.72 mg/l
Sampled 28 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 10:05 | 9.72 | 9.72 mg/l |
| 10 Apr 2026, 14:53 | 12.1 | 12.1 mg/l |
| 12 Mar 2026, 11:47 | 12.2 | 12.2 mg/l |
| 18 Feb 2026, 13:43 | 13.6 | 13.6 mg/l |
| 30 Jan 2026, 12:49 | 12.9 | 12.9 mg/l |
| 16 Dec 2025, 13:39 | 12.4 | 12.4 mg/l |
| 18 Nov 2025, 12:40 | 12.6 | 12.6 mg/l |
| 17 Oct 2025, 13:02 | 11.1 | 11.1 mg/l |
| 18 Sep 2025, 12:58 | 10.6 | 10.6 mg/l |
| 13 Aug 2025, 13:17 | 10.1 | 10.1 mg/l |
| 23 Jul 2025, 10:22 | 10.2 | 10.2 mg/l |
| 11 Jun 2025, 09:41 | 11.1 | 11.1 mg/l |
| 14 May 2025, 13:04 | 10.9 | 10.9 mg/l |
| 22 Apr 2025, 09:42 | 11.4 | 11.4 mg/l |
| 3 Mar 2025, 15:01 | 12 | 12 mg/l |
| 11 Feb 2025, 10:43 | 12.8 | 12.8 mg/l |
| 21 Jan 2025, 14:12 | 12.9 | 12.9 mg/l |
| 10 Dec 2024, 11:57 | 13.5 | 13.5 mg/l |
| 25 Nov 2024, 12:42 | 11.7 | 11.7 mg/l |
| 15 Oct 2024, 11:21 | 11.7 | 11.7 mg/l |
| 20 Sep 2024, 11:24 | 10.5 | 10.5 mg/l |
| 23 Aug 2024, 12:24 | 10.5 | 10.5 mg/l |
| 17 Jul 2024, 14:06 | 10.1 | 10.1 mg/l |
| 20 Jun 2024, 10:25 | 10.9 | 10.9 mg/l |
Water temperature
code 0076 · °C
16.7 °C
Sampled 28 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 10:05 | 16.7 | 16.7 °C |
| 10 Apr 2026, 14:53 | 9.4 | 9.4 °C |
| 12 Mar 2026, 11:47 | 7.6 | 7.6 °C |
| 18 Feb 2026, 13:43 | 3.3 | 3.3 °C |
| 30 Jan 2026, 12:49 | 3.9 | 3.9 °C |
| 16 Dec 2025, 13:39 | 7.2 | 7.2 °C |
| 18 Nov 2025, 12:40 | 6.2 | 6.2 °C |
| 17 Oct 2025, 13:02 | 10.9 | 10.9 °C |
| 18 Sep 2025, 12:58 | 13.7 | 13.7 °C |
| 13 Aug 2025, 13:17 | 18.4 | 18.4 °C |
| 23 Jul 2025, 10:22 | 15.6 | 15.6 °C |
| 11 Jun 2025, 09:41 | 11.7 | 11.7 °C |
| 14 May 2025, 13:04 | 15.7 | 15.7 °C |
| 22 Apr 2025, 09:42 | 9.1 | 9.1 °C |
| 3 Mar 2025, 15:01 | 8 | 8 °C |
| 11 Feb 2025, 10:43 | 4.6 | 4.6 °C |
| 21 Jan 2025, 14:12 | 5.5 | 5.5 °C |
| 10 Dec 2024, 11:57 | 4.1 | 4.1 °C |
| 25 Nov 2024, 12:42 | 7.7 | 7.7 °C |
| 15 Oct 2024, 11:21 | 9.1 | 9.1 °C |
| 20 Sep 2024, 11:24 | 12.7 | 12.7 °C |
| 23 Aug 2024, 12:24 | 13.5 | 13.5 °C |
| 17 Jul 2024, 14:06 | 17.1 | 17.1 °C |
| 20 Jun 2024, 10:25 | 13.5 | 13.5 °C |
pH
code 0061
7.31
Sampled 28 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 10:05 | 7.31 | 7.31 |
| 10 Apr 2026, 14:53 | 7.37 | 7.37 |
| 12 Mar 2026, 11:47 | 7.58 | 7.58 |
| 18 Feb 2026, 13:43 | 7.54 | 7.54 |
| 30 Jan 2026, 12:49 | 7.29 | 7.29 |
| 16 Dec 2025, 13:39 | 7.08 | 7.08 |
| 18 Nov 2025, 12:40 | 7.08 | 7.08 |
| 17 Oct 2025, 13:02 | 7.72 | 7.72 |
| 18 Sep 2025, 12:58 | 7.56 | 7.56 |
| 13 Aug 2025, 13:17 | 7.54 | 7.54 |
| 23 Jul 2025, 10:22 | 8.12 | 8.12 |
| 11 Jun 2025, 09:41 | 7.71 | 7.71 |
| 14 May 2025, 13:04 | 8.66 | 8.66 |
| 22 Apr 2025, 09:42 | 7.62 | 7.62 |
| 3 Mar 2025, 15:01 | 7.58 | 7.58 |
| 11 Feb 2025, 10:43 | 6.78 | 6.78 |
| 21 Jan 2025, 14:12 | 6.91 | 6.91 |
| 10 Dec 2024, 11:57 | 7.97 | 7.97 |
| 25 Nov 2024, 12:42 | 7.36 | 7.36 |
| 15 Oct 2024, 11:21 | 7.7 | 7.7 |
| 20 Sep 2024, 11:24 | 7.03 | 7.03 |
| 23 Aug 2024, 12:24 | 8.05 | 8.05 |
| 17 Jul 2024, 14:06 | 7.59 | 7.59 |
| 20 Jun 2024, 10:25 | 7.81 | 7.81 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.002 mg/l (not detected above this)
Sampled 28 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 10:05 | <0.002 | below 0.002 mg/l (not detected above this) |
| 10 Apr 2026, 14:53 | <0.002 | below 0.002 mg/l (not detected above this) |
| 12 Mar 2026, 11:47 | 0.0026 | 0.0026 mg/l |
| 18 Feb 2026, 13:43 | <0.002 | below 0.002 mg/l (not detected above this) |
| 30 Jan 2026, 12:49 | 0.0084 | 0.0084 mg/l |
| 16 Dec 2025, 13:39 | <0.002 | below 0.002 mg/l (not detected above this) |
| 18 Nov 2025, 12:40 | <0.002 | below 0.002 mg/l (not detected above this) |
| 17 Oct 2025, 13:02 | <0.002 | below 0.002 mg/l (not detected above this) |
| 18 Sep 2025, 12:58 | 0.0054 | 0.0054 mg/l |
| 13 Aug 2025, 13:17 | 0.0027 | 0.0027 mg/l |
| 23 Jul 2025, 10:22 | 0.0023 | 0.0023 mg/l |
| 11 Jun 2025, 09:41 | <0.002 | below 0.002 mg/l (not detected above this) |
| 14 May 2025, 13:04 | 0.0027 | 0.0027 mg/l |
| 22 Apr 2025, 09:42 | 0.0043 | 0.0043 mg/l |
| 3 Mar 2025, 15:01 | 0.0094 | 0.0094 mg/l |
| 11 Feb 2025, 10:43 | 0.0032 | 0.0032 mg/l |
| 21 Jan 2025, 14:12 | 0.0032 | 0.0032 mg/l |
| 10 Dec 2024, 11:57 | <0.002 | below 0.002 mg/l (not detected above this) |
| 25 Nov 2024, 12:42 | <0.002 | below 0.002 mg/l (not detected above this) |
| 15 Oct 2024, 11:21 | 0.0021 | 0.0021 mg/l |
| 20 Sep 2024, 11:24 | 0.012 | 0.012 mg/l |
| 23 Aug 2024, 12:24 | 0.0035 | 0.0035 mg/l |
| 17 Jul 2024, 14:06 | 0.0073 | 0.0073 mg/l |
| 20 Jun 2024, 10:25 | 0.0037 | 0.0037 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.259 mg/l
Sampled 28 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 10:05 | 0.259 | 0.259 mg/l |
| 10 Apr 2026, 14:53 | 0.259 | 0.259 mg/l |
| 12 Mar 2026, 11:47 | 0.379 | 0.379 mg/l |
| 18 Feb 2026, 13:43 | 0.469 | 0.469 mg/l |
| 30 Jan 2026, 12:49 | 0.479 | 0.479 mg/l |
| 16 Dec 2025, 13:39 | 0.359 | 0.359 mg/l |
| 18 Nov 2025, 12:40 | 0.299 | 0.299 mg/l |
| 17 Oct 2025, 13:02 | 0.249 | 0.249 mg/l |
| 18 Sep 2025, 12:58 | 0.219 | 0.219 mg/l |
| 13 Aug 2025, 13:17 | 0.169 | 0.169 mg/l |
| 23 Jul 2025, 10:22 | 0.159 | 0.159 mg/l |
| 11 Jun 2025, 09:41 | 0.219 | 0.219 mg/l |
| 14 May 2025, 13:04 | 0.259 | 0.259 mg/l |
| 22 Apr 2025, 09:42 | 0.349 | 0.349 mg/l |
| 3 Mar 2025, 15:01 | 0.407 | 0.407 mg/l |
| 11 Feb 2025, 10:43 | 0.527 | 0.527 mg/l |
| 21 Jan 2025, 14:12 | 0.359 | 0.359 mg/l |
| 10 Dec 2024, 11:57 | 0.429 | 0.429 mg/l |
| 25 Nov 2024, 12:42 | 0.449 | 0.449 mg/l |
| 15 Oct 2024, 11:21 | 0.178 | 0.178 mg/l |
| 20 Sep 2024, 11:24 | 0.249 | 0.249 mg/l |
| 23 Aug 2024, 12:24 | 0.09 | 0.09 mg/l |
| 17 Jul 2024, 14:06 | 0.139 | 0.139 mg/l |
| 20 Jun 2024, 10:25 | 0.169 | 0.169 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
below 0.001 mg/l (not detected above this)
Sampled 28 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 10:05 | <0.001 | below 0.001 mg/l (not detected above this) |
| 10 Apr 2026, 14:53 | <0.001 | below 0.001 mg/l (not detected above this) |
| 12 Mar 2026, 11:47 | 0.001 | 0.001 mg/l |
| 18 Feb 2026, 13:43 | 0.0011 | 0.0011 mg/l |
| 30 Jan 2026, 12:49 | 0.0012 | 0.0012 mg/l |
| 16 Dec 2025, 13:39 | 0.0015 | 0.0015 mg/l |
| 18 Nov 2025, 12:40 | 0.0011 | 0.0011 mg/l |
| 17 Oct 2025, 13:02 | <0.001 | below 0.001 mg/l (not detected above this) |
| 18 Sep 2025, 12:58 | 0.0019 | 0.0019 mg/l |
| 13 Aug 2025, 13:17 | 0.0013 | 0.0013 mg/l |
| 23 Jul 2025, 10:22 | 0.001 | 0.001 mg/l |
| 11 Jun 2025, 09:41 | <0.001 | below 0.001 mg/l (not detected above this) |
| 14 May 2025, 13:04 | <0.001 | below 0.001 mg/l (not detected above this) |
| 22 Apr 2025, 09:42 | 0.0011 | 0.0011 mg/l |
| 3 Mar 2025, 15:01 | 0.0024 | 0.0024 mg/l |
| 11 Feb 2025, 10:43 | 0.0018 | 0.0018 mg/l |
| 21 Jan 2025, 14:12 | 0.002 | 0.002 mg/l |
| 10 Dec 2024, 11:57 | <0.001 | below 0.001 mg/l (not detected above this) |
| 25 Nov 2024, 12:42 | 0.0012 | 0.0012 mg/l |
| 15 Oct 2024, 11:21 | <0.001 | below 0.001 mg/l (not detected above this) |
| 20 Sep 2024, 11:24 | 0.0011 | 0.0011 mg/l |
| 23 Aug 2024, 12:24 | 0.0025 | 0.0025 mg/l |
| 17 Jul 2024, 14:06 | <0.001 | below 0.001 mg/l (not detected above this) |
| 20 Jun 2024, 10:25 | 0.001 | 0.001 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
55 µS/cm
Sampled 28 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 28 May 2026, 10:05 | 55 | 55 µS/cm |
| 10 Apr 2026, 14:53 | 48 | 48 µS/cm |
| 12 Mar 2026, 11:47 | 43 | 43 µS/cm |
| 18 Feb 2026, 13:43 | 47 | 47 µS/cm |
| 30 Jan 2026, 12:49 | 65 | 65 µS/cm |
| 16 Dec 2025, 13:39 | 44 | 44 µS/cm |
| 18 Nov 2025, 12:40 | 58 | 58 µS/cm |
| 17 Oct 2025, 13:02 | 61 | 61 µS/cm |
| 18 Sep 2025, 12:58 | 63 | 63 µS/cm |
| 13 Aug 2025, 13:17 | 56 | 56 µS/cm |
| 23 Jul 2025, 10:22 | 202 | 202 µS/cm |
| 11 Jun 2025, 09:41 | 130 | 130 µS/cm |
| 14 May 2025, 13:04 | 64 | 64 µS/cm |
| 22 Apr 2025, 09:42 | 72 | 72 µS/cm |
| 3 Mar 2025, 15:01 | 70 | 70 µS/cm |
| 11 Feb 2025, 10:43 | 77 | 77 µS/cm |
| 21 Jan 2025, 14:12 | 45 | 45 µS/cm |
| 10 Dec 2024, 11:57 | 134 | 134 µS/cm |
| 25 Nov 2024, 12:42 | 46 | 46 µS/cm |
| 15 Oct 2024, 11:21 | 53 | 53 µS/cm |
| 20 Sep 2024, 11:24 | 60 | 60 µS/cm |
| 23 Aug 2024, 12:24 | 51 | 51 µS/cm |
| 17 Jul 2024, 14:06 | 49 | 49 µS/cm |
| 20 Jun 2024, 10:25 | 47 | 47 µS/cm |
E. coli
confirmed, membrane filtration · code 2348 · per 100 ml
200 per 100 ml
Sampled 11 Sep 2026, 20 days ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 12:37 | 200 | 200 per 100 ml |
| 8 Sep 2026, 13:05 | 300 | 300 per 100 ml |
| 27 Aug 2026, 10:05 | 170 | 170 per 100 ml |
| 24 Aug 2026, 13:15 | 63 | 63 per 100 ml |
| 13 Aug 2026, 10:46 | 36 | 36 per 100 ml |
| 10 Aug 2026, 12:03 | 130 | 130 per 100 ml |
| 30 Jul 2026, 12:59 | 27 | 27 per 100 ml |
| 26 Jul 2026, 12:55 | 1100 | 1100 per 100 ml |
| 16 Jul 2026, 11:23 | 110 | 110 per 100 ml |
| 13 Jul 2026, 12:10 | 90 | 90 per 100 ml |
| 1 Jul 2026, 13:55 | 72 | 72 per 100 ml |
| 28 Jun 2026, 14:43 | 500 | 500 per 100 ml |
| 16 Jun 2026, 12:40 | 910 | 910 per 100 ml |
| 12 Jun 2026, 12:00 | 240 | 240 per 100 ml |
| 4 Jun 2026, 11:00 | 9300 | 9300 per 100 ml |
| 28 May 2026, 12:56 | <10 | below 10 per 100 ml (not detected above this) |
| 19 May 2026, 10:19 | 4400 | 4400 per 100 ml |
| 15 May 2026, 09:54 | 36 | 36 per 100 ml |
Everything measured here
18 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 18 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 24 | Jun 2024 – May 2026 | 100.2% 28 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 24 | Jun 2024 – May 2026 | 9.72 mg/l 28 May 2026 |
| Temperature of Water 0076 | River water | 24 | Jun 2024 – May 2026 | 16.7 °C 28 May 2026 |
| pH 0061 | River water | 24 | Jun 2024 – May 2026 | 7.31 28 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 24 | Jun 2024 – May 2026 | below 0.002 mg/l 28 May 2026 |
| Nitrate as N 0117 | River water | 24 | Jun 2024 – May 2026 | 0.259 mg/l 28 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 24 | Jun 2024 – May 2026 | below 0.001 mg/l 28 May 2026 |
| Conductivity at 25 C 0077 | River water | 24 | Jun 2024 – May 2026 | 55 µS/cm 28 May 2026 |
| Escherichia coli : Confirmed : MF 2348 | River water | 18 | May 2026 – Sep 2026 | 200 per 100 ml 11 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Jun 2024 – May 2026 | 13 mg/l 28 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Jun 2024 – May 2026 | below 0.00001 mg/l 28 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Jun 2024 – May 2026 | below 1 mg/l 28 May 2026 |
| Enterococci: Intestinal: Confirmed: MF 3723 | River water | 18 | May 2026 – Sep 2026 | 27 colony forming units / 100ml 11 Sep 2026 |
| Enterococci: Intestinal: Presumptive: MF 3722 | River water | 18 | May 2026 – Sep 2026 | 27 colony forming units / 100ml 11 Sep 2026 |
| MST Filtration 4926 | River water | 18 | May 2026 – Sep 2026 | DNA Stored 11 Sep 2026 |
| Nitrite as N 0118 | River water | 24 | Jun 2024 – May 2026 | 0.001 mg/l 28 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 24 | Jun 2024 – May 2026 | 0.26 mg/l 28 May 2026 |
| Volume of Sample Filtered 4865 | River water | 18 | May 2026 – Sep 2026 | 860 millilitre 11 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.