Mar Dyke Stifford Gaugeing Station
EA name: MAR DYKE STIFFORD GAUGEING STATION
Environment Agency sampling point AN-MD0202 · 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, 11:2020 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 30 since 20 Oct 2023 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 559700, 180390As published, to the nearest 10 m. Open in a map
- River, by its own name
- Mar Dyke
- River, by the map
- Mar DykePlaced on the river its name gives, 0 m from the line.
- Next gauge downstream
- None tracedIts water reaches the sea without passing a gauge.
- Why it was sampled
- Monitoring (national agency policy) (13 samples)
Planned investigation (local monitoring) (11 samples)
Environmental monitoring statutory (EU directives) (6 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
13.4%
Sampled 11 Sep 2026, 20 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:20 | 13.4 | 13.4% |
| 26 Aug 2026, 12:11 | 14.9 | 14.9% |
| 7 Jul 2026, 12:16 | 49.1 | 49.1% |
| 15 Jun 2026, 12:09 | 72.2 | 72.2% |
| 26 May 2026, 11:55 | 100.8 | 100.8% |
| 17 Apr 2026, 12:51 | 112.9 | 112.9% |
| 20 Mar 2025, 09:27 | 85 | 85% |
| 11 Feb 2025, 10:28 | 85 | 85% |
| 7 Jan 2025, 12:34 | 72.9 | 72.9% |
| 9 Dec 2024, 12:03 | 69.7 | 69.7% |
| 18 Nov 2024, 10:25 | 32 | 32% |
| 31 Oct 2024, 11:37 | 18.2 | 18.2% |
| 27 Sep 2024, 11:02 | 35.6 | 35.6% |
| 19 Aug 2024, 11:43 | 43.7 | 43.7% |
| 8 Jul 2024, 11:11 | 52.6 | 52.6% |
| 17 Jun 2024, 10:14 | 70 | 70% |
| 20 May 2024, 13:20 | 70 | 70% |
| 24 Apr 2024, 11:52 | 75.4 | 75.4% |
| 5 Mar 2024, 11:58 | 76.3 | 76.3% |
| 19 Feb 2024, 12:56 | 73.4 | 73.4% |
| 10 Jan 2024, 12:01 | 80.6 | 80.6% |
| 15 Dec 2023, 10:55 | 69.6 | 69.6% |
| 27 Nov 2023, 11:01 | 60 | 60% |
| 13 Nov 2023, 11:50 | 78.6 | 78.6% |
| 27 Oct 2023, 13:10 | 46.8 | 46.8% |
| 20 Oct 2023, 11:55 | 33.4 | 33.4% |
Dissolved oxygen
as O2 · code 9924 · mg/l
1.29 mg/l
Sampled 11 Sep 2026, 20 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:20 | 1.29 | 1.29 mg/l |
| 26 Aug 2026, 12:11 | 1.42 | 1.42 mg/l |
| 7 Jul 2026, 12:16 | 4.3 | 4.3 mg/l |
| 15 Jun 2026, 12:09 | 6.99 | 6.99 mg/l |
| 26 May 2026, 11:55 | 8.79 | 8.79 mg/l |
| 17 Apr 2026, 12:51 | 11.3 | 11.3 mg/l |
| 20 Mar 2025, 09:27 | 10.1 | 10.1 mg/l |
| 11 Feb 2025, 10:28 | 10.8 | 10.8 mg/l |
| 7 Jan 2025, 12:34 | 9.25 | 9.25 mg/l |
| 9 Dec 2024, 12:03 | 8.3 | 8.3 mg/l |
| 18 Nov 2024, 10:25 | 3.77 | 3.77 mg/l |
| 31 Oct 2024, 11:37 | 1.91 | 1.91 mg/l |
| 27 Sep 2024, 11:02 | 3.61 | 3.61 mg/l |
| 19 Aug 2024, 11:43 | 4.14 | 4.14 mg/l |
| 8 Jul 2024, 11:11 | 5.17 | 5.17 mg/l |
| 17 Jun 2024, 10:14 | 6.88 | 6.88 mg/l |
| 20 May 2024, 13:20 | 6.54 | 6.54 mg/l |
| 24 Apr 2024, 11:52 | 8.56 | 8.56 mg/l |
| 5 Mar 2024, 11:58 | 8.93 | 8.93 mg/l |
| 19 Feb 2024, 12:56 | 8.23 | 8.23 mg/l |
| 10 Jan 2024, 12:01 | 10.6 | 10.6 mg/l |
| 15 Dec 2023, 10:55 | 8.33 | 8.33 mg/l |
| 27 Nov 2023, 11:01 | 7.11 | 7.11 mg/l |
| 13 Nov 2023, 11:50 | 8.77 | 8.77 mg/l |
| 27 Oct 2023, 13:10 | 5.07 | 5.07 mg/l |
| 20 Oct 2023, 11:55 | 3.37 | 3.37 mg/l |
Water temperature
code 0076 · °C
16.9 °C
Sampled 11 Sep 2026, 20 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:20 | 16.9 | 16.9 °C |
| 26 Aug 2026, 12:11 | 17.4 | 17.4 °C |
| 7 Jul 2026, 12:16 | 21.8 | 21.8 °C |
| 15 Jun 2026, 12:09 | 16.8 | 16.8 °C |
| 26 May 2026, 11:55 | 22 | 22 °C |
| 17 Apr 2026, 12:51 | 15.2 | 15.2 °C |
| 20 Mar 2025, 09:27 | 8 | 8 °C |
| 11 Feb 2025, 10:28 | 5 | 5 °C |
| 7 Jan 2025, 12:34 | 5.2 | 5.2 °C |
| 9 Dec 2024, 12:03 | 7.7 | 7.7 °C |
| 18 Nov 2024, 10:25 | 8.2 | 8.2 °C |
| 31 Oct 2024, 11:37 | 13.1 | 13.1 °C |
| 27 Sep 2024, 11:02 | 14.6 | 14.6 °C |
| 19 Aug 2024, 11:43 | 17.8 | 17.8 °C |
| 8 Jul 2024, 11:11 | 16.1 | 16.1 °C |
| 17 Jun 2024, 10:14 | 16.1 | 16.1 °C |
| 20 May 2024, 13:20 | 18.5 | 18.5 °C |
| 24 Apr 2024, 11:52 | 9.7 | 9.7 °C |
| 5 Mar 2024, 11:58 | 8.4 | 8.4 °C |
| 19 Feb 2024, 12:56 | 10.2 | 10.2 °C |
| 10 Jan 2024, 12:01 | 3.7 | 3.7 °C |
| 15 Dec 2023, 10:55 | 7.5 | 7.5 °C |
| 27 Nov 2023, 11:01 | 7.9 | 7.9 °C |
| 13 Nov 2023, 11:50 | 10.4 | 10.4 °C |
| 27 Oct 2023, 13:10 | 11.7 | 11.7 °C |
| 20 Oct 2023, 11:55 | 14.9 | 14.9 °C |
pH
code 0061
7.02
Sampled 11 Sep 2026, 20 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:20 | 7.02 | 7.02 |
| 26 Aug 2026, 12:11 | 6.75 | 6.75 |
| 7 Jul 2026, 12:16 | 7.01 | 7.01 |
| 15 Jun 2026, 12:09 | 7.58 | 7.58 |
| 26 May 2026, 11:55 | 7.42 | 7.42 |
| 17 Apr 2026, 12:51 | 7.67 | 7.67 |
| 20 Mar 2025, 09:27 | 7.62 | 7.62 |
| 11 Feb 2025, 10:28 | 7.58 | 7.58 |
| 7 Jan 2025, 12:34 | 7.86 | 7.86 |
| 9 Dec 2024, 12:03 | 7.37 | 7.37 |
| 18 Nov 2024, 10:25 | 7.06 | 7.06 |
| 31 Oct 2024, 11:37 | 7.26 | 7.26 |
| 27 Sep 2024, 11:02 | 7.4 | 7.4 |
| 19 Aug 2024, 11:43 | 6.91 | 6.91 |
| 8 Jul 2024, 11:11 | 7.59 | 7.59 |
| 17 Jun 2024, 10:14 | 7.52 | 7.52 |
| 20 May 2024, 13:20 | 7.48 | 7.48 |
| 24 Apr 2024, 11:52 | 7.45 | 7.45 |
| 5 Mar 2024, 11:58 | 7.55 | 7.55 |
| 19 Feb 2024, 12:56 | 7.7 | 7.7 |
| 10 Jan 2024, 12:01 | 7.66 | 7.66 |
| 15 Dec 2023, 10:55 | 7.42 | 7.42 |
| 27 Nov 2023, 11:01 | 7.28 | 7.28 |
| 13 Nov 2023, 11:50 | 7.56 | 7.56 |
| 27 Oct 2023, 13:10 | 7.3 | 7.3 |
| 20 Oct 2023, 11:55 | 7.1 | 7.1 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.12 mg/l
Sampled 11 Sep 2026, 20 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:20 | 0.12 | 0.12 mg/l |
| 26 Aug 2026, 12:11 | 0.2 | 0.2 mg/l |
| 7 Jul 2026, 12:16 | 0.04 | 0.04 mg/l |
| 15 Jun 2026, 12:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 26 May 2026, 11:55 | 0.042 | 0.042 mg/l |
| 17 Apr 2026, 12:51 | 0.17 | 0.17 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
5.56 mg/l
Sampled 11 Sep 2026, 20 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:20 | 5.56 | 5.56 mg/l |
| 26 Aug 2026, 12:11 | 14.9 | 14.9 mg/l |
| 7 Jul 2026, 12:16 | 13.8 | 13.8 mg/l |
| 15 Jun 2026, 12:09 | 4.9 | 4.9 mg/l |
| 26 May 2026, 11:55 | 11.8 | 11.8 mg/l |
| 17 Apr 2026, 12:51 | 9.82 | 9.82 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.74 mg/l
Sampled 11 Sep 2026, 20 days ago · 6 results banked
Every result (6)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:20 | 0.74 | 0.74 mg/l |
| 26 Aug 2026, 12:11 | 0.76 | 0.76 mg/l |
| 7 Jul 2026, 12:16 | 0.31 | 0.31 mg/l |
| 15 Jun 2026, 12:09 | 0.38 | 0.38 mg/l |
| 26 May 2026, 11:55 | 0.54 | 0.54 mg/l |
| 17 Apr 2026, 12:51 | 0.31 | 0.31 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
741 µS/cm
Sampled 11 Sep 2026, 20 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 11 Sep 2026, 11:20 | 741 | 741 µS/cm |
| 26 Aug 2026, 12:11 | 1019 | 1019 µS/cm |
| 7 Jul 2026, 12:16 | 1122 | 1122 µS/cm |
| 15 Jun 2026, 12:09 | 983 | 983 µS/cm |
| 26 May 2026, 11:55 | 1126 | 1126 µS/cm |
| 17 Apr 2026, 12:51 | 1203 | 1203 µS/cm |
| 20 Mar 2025, 09:27 | 1330 | 1330 µS/cm |
| 11 Feb 2025, 10:28 | 1013 | 1013 µS/cm |
| 7 Jan 2025, 12:34 | 728 | 728 µS/cm |
| 9 Dec 2024, 12:03 | 868 | 868 µS/cm |
| 18 Nov 2024, 10:25 | 1086 | 1086 µS/cm |
| 31 Oct 2024, 11:37 | 1022 | 1022 µS/cm |
| 27 Sep 2024, 11:02 | 821 | 821 µS/cm |
| 19 Aug 2024, 11:43 | 1081 | 1081 µS/cm |
| 8 Jul 2024, 11:11 | 846 | 846 µS/cm |
| 17 Jun 2024, 10:14 | 1330 | 1330 µS/cm |
| 20 May 2024, 13:20 | 1168 | 1168 µS/cm |
| 24 Apr 2024, 11:52 | 1148 | 1148 µS/cm |
| 5 Mar 2024, 11:58 | 864 | 864 µS/cm |
| 19 Feb 2024, 12:56 | 554 | 554 µS/cm |
| 10 Jan 2024, 12:01 | 966 | 966 µS/cm |
| 15 Dec 2023, 10:55 | 784 | 784 µS/cm |
| 27 Nov 2023, 11:01 | 1116 | 1116 µS/cm |
| 13 Nov 2023, 11:50 | 342 | 342 µS/cm |
| 27 Oct 2023, 13:10 | 914 | 914 µS/cm |
| 20 Oct 2023, 11:55 | 591 | 591 µS/cm |
Everything measured here
170 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 170 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 26 | Oct 2023 – Sep 2026 | 13.4% 11 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 26 | Oct 2023 – Sep 2026 | 1.29 mg/l 11 Sep 2026 |
| Temperature of Water 0076 | River water | 26 | Oct 2023 – Sep 2026 | 16.9 °C 11 Sep 2026 |
| pH 0061 | River water | 26 | Oct 2023 – Sep 2026 | 7.02 11 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 6 | Apr 2026 – Sep 2026 | 0.12 mg/l 11 Sep 2026 |
| Nitrate as N 0117 | River water | 6 | Apr 2026 – Sep 2026 | 5.56 mg/l 11 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 6 | Apr 2026 – Sep 2026 | 0.74 mg/l 11 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 26 | Oct 2023 – Sep 2026 | 741 µS/cm 11 Sep 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor) 2993 | River water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 17 Jun 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (B) 2942 | River water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 17 Jun 2024 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid (L) 2991 | River water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 17 Jun 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (B) 2943 | River water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 17 Jun 2024 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid (L) 2990 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| 2H,2H,3H,3H-Perfluorooctanoic acid 2989 | River water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 17 Jun 2024 |
| 3-Perfluoroheptylpropanoic acid 2925 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| 3:3 Fluorotelomer carboxylic acid 2926 | River water | 1 | Jun 2024 – Jun 2024 | below 0.004 µg/l 17 Jun 2024 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) 2988 | River water | 1 | Jun 2024 – Jun 2024 | below 0.005 µg/l 17 Jun 2024 |
| 4:2 Fluorotelomer sulfonic acid 2987 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| 6:2 Fluorotelomer sulfonic acid 2984 | River water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 17 Jun 2024 |
| 8:2 Fluorotelomer sulfonic acid 2983 | River water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 17 Jun 2024 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid 2982 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 6 | Apr 2026 – Sep 2026 | 98 mg/l 11 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 6 | Apr 2026 – Sep 2026 | 0.00039 mg/l 11 Sep 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X) 2981 | River water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 17 Jun 2024 |
| N-Ethylperfluorooctanesulfonamide 2977 | River water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 17 Jun 2024 |
| N-methylperfluorooctanesulfonamide 2975 | River water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 17 Jun 2024 |
| Nitrite as N 0118 | River water | 6 | Apr 2026 – Sep 2026 | 0.14 mg/l 11 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 6 | Apr 2026 – Sep 2026 | 5.7 mg/l 11 Sep 2026 |
| Non Target Screening : Water 2876 | River water | 1 | Apr 2026 – Apr 2026 | 1 text result 17 Apr 2026 |
| Perfluoro(2-ethoxyethane)sulfonic acid 2924 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| Perfluoro(4-methoxybutanoic) acid 2923 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| Perfluoro-3,6-dioxaheptanoic acid 2922 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| Perfluoro-3-methoxypropanoic acid 2921 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| Perfluoro-4-ethylcyclohexanesulfonic acid 2973 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| Perfluorobutanesulfonic acid 2972 | River water | 1 | Jun 2024 – Jun 2024 | 0.0067 µg/l 17 Jun 2024 |
| Perfluorobutanoic acid 2995 | River water | 1 | Jun 2024 – Jun 2024 | 0.0098 µg/l 17 Jun 2024 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) 2970 | River water | 1 | Jun 2024 – Jun 2024 | 0.0015 µg/l 17 Jun 2024 |
| Perfluorodecanesulfonic acid 2969 | River water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 17 Jun 2024 |
| Perfluorodecanoic acid 8892 | River water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 17 Jun 2024 |
| Perfluorododecane sulfonic acid 2968 | River water | 1 | Jun 2024 – Jun 2024 | below 0.005 µg/l 17 Jun 2024 |
| Perfluorododecanoic acid 8894 | River water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 17 Jun 2024 |
| Perfluoroheptanesulfonic acid 2967 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| Perfluoroheptanoic acid 8889 | River water | 1 | Jun 2024 – Jun 2024 | 0.0044 µg/l 17 Jun 2024 |
| Perfluorohexanesulfonamide 2965 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| Perfluorohexanesulfonic acid (B) 2944 | River water | 1 | Jun 2024 – Jun 2024 | 0.0012 µg/l 17 Jun 2024 |
| Perfluorohexanesulfonic acid (L) 2964 | River water | 1 | Jun 2024 – Jun 2024 | 0.006 µg/l 17 Jun 2024 |
| Perfluorohexanoic acid 8888 | River water | 1 | Jun 2024 – Jun 2024 | 0.0098 µg/l 17 Jun 2024 |
| Perfluorononanesulfonic acid 2963 | River water | 1 | Jun 2024 – Jun 2024 | below 0.0005 µg/l 17 Jun 2024 |
| Perfluorononanoic acid 8891 | River water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 17 Jun 2024 |
| Perfluorooctadecanoic acid 2962 | River water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 17 Jun 2024 |
| Perfluorooctanesulfonamide 2961 | River water | 1 | Jun 2024 – Jun 2024 | below 0.001 µg/l 17 Jun 2024 |
| Perfluorooctanesulfonic acid (branched) 2960 | River water | 1 | Jun 2024 – Jun 2024 | 0.0036 µg/l 17 Jun 2024 |
| Perfluorooctanesulfonic acid (linear) 2959 | River water | 1 | Jun 2024 – Jun 2024 | 0.0048 µg/l 17 Jun 2024 |
| Perfluorooctanoate anion 9274 | River water | 8 | Oct 2023 – Mar 2024 | 0.0059 µg/l 5 Mar 2024 |
| Perfluorooctanoic acid 8890 | River water | 1 | Jun 2024 – Jun 2024 | 0.0071 µg/l 17 Jun 2024 |
| Perfluorooctylsulphonate anion 9276 | River water | 8 | Oct 2023 – Mar 2024 | 0.0072 µg/l 5 Mar 2024 |
| Perfluoropentanesulfonic acid 2957 | River water | 1 | Jun 2024 – Jun 2024 | 0.00099 µg/l 17 Jun 2024 |
| Perfluoropentanoic acid 8887 | River water | 1 | Jun 2024 – Jun 2024 | 0.013 µg/l 17 Jun 2024 |
| Perfluorotetradecanoic acid 8895 | River water | 1 | Jun 2024 – Jun 2024 | below 0.006 µg/l 17 Jun 2024 |
| Perfluorotridecanoic acid 2955 | River water | 1 | Jun 2024 – Jun 2024 | below 0.005 µg/l 17 Jun 2024 |
| Perfluoroundecane sulfonic acid 2953 | River water | 1 | Jun 2024 – Jun 2024 | below 0.004 µg/l 17 Jun 2024 |
| Perfluoroundecanoic acid 8893 | River water | 1 | Jun 2024 – Jun 2024 | below 0.002 µg/l 17 Jun 2024 |
| 1,2,3,4,6,7,8-Heptachlorodibenzo-p-dioxin : Wet Wt 3255 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 1,2,3,4,6,7,8-Heptachlorodibenzofuran : Wet Wt 3256 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 1,2,3,4,7,8,9-Heptachlorodibenzofuran : Wet Wt 3254 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin : Wet Wt 3205 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 1,2,3,4,7,8-Hexachlorodibenzofuran : Wet Wt 3246 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin : Wet Wt 3200 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 1,2,3,6,7,8-Hexachlorodibenzofuran : Wet Wt 3202 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin : Wet Wt 3198 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 1,2,3,7,8,9-Hexachlorodibenzofuran : Wet Wt 3199 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 1,2,3,7,8-Pentachlorodibenzo-p-dioxin : Wet Wt 3196 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 1,2,3,7,8-Pentachlorodibenzofuran : Wet Wt 3197 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (F-53B Minor): WW 2918 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.007 microgram per kilogram 16 Apr 2026 |
| 1H,1H,2H,2H-perfluorooctane sulfonic acid : wet wt 2998 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.4 microgram per kilogram 16 Apr 2026 |
| 2,2,4,4 Tetrabromodiphenyl ether : Wet Wt 3419 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 1.5 microgram per kilogram 16 Apr 2026 |
| 2,2,4,4,5 Pentabromodiphenyl Ether: Wet Wt 3415 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.02 microgram per kilogram 16 Apr 2026 |
| 2,2,4,4,5,5 Hexabromodiphenyl Ether: Wet Wt 3414 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.022 microgram per kilogram 16 Apr 2026 |
| 2,2,4,4,5,6 Hexabromodiphenyl Ether: Wet Wt 3412 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.2 microgram per kilogram 16 Apr 2026 |
| 2,2,4,4,6 Pentabromodiphenyl Ether: Wet Wt 3407 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.21 microgram per kilogram 16 Apr 2026 |
| 2,3,4,6,7,8-Hexachlorodibenzofuran : Wet Wt 3186 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 2,3,4,7,8-Pentachlorodibenzofuran : Wet Wt 3195 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 2,3,7,8-Tetrachlorodibenzo-p-dioxin : Wet Wt 3193 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 2,3,7,8-Tetrachlorodibenzofuran : Wet Wt 3194 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| 2,4,4 Tribromodiphenyl ether : Wet Wt 3398 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.074 microgram per kilogram 16 Apr 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid - branched 2864 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.014 microgram per kilogram 16 Apr 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid - linear 2863 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.02 microgram per kilogram 16 Apr 2026 |
| 2-(N-Ethylperfluorooctanesulfonamido)acetic acid: wet wt 2917 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.1 microgram per kilogram 16 Apr 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid - branched 2866 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.005 microgram per kilogram 16 Apr 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid - linear 2865 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.5 microgram per kilogram 16 Apr 2026 |
| 2-(N-Methylperfluorooctanesulfonamido)acetic acid: wet wt 2916 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.5 microgram per kilogram 16 Apr 2026 |
| 2H,2H,3H,3H-Perfluorooctanoic acid: wet wt 2915 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.03 microgram per kilogram 16 Apr 2026 |
| 3-Perfluoroheptylpropanoic acid: wet wt 2913 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.6 microgram per kilogram 16 Apr 2026 |
| 3:3 Fluorotelomer carboxylic acid: wet wt 2914 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.06 microgram per kilogram 16 Apr 2026 |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) : wet wt 2912 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.02 microgram per kilogram 16 Apr 2026 |
| 4:2 Fluorotelomer sulfonic acid: wet wt 2911 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.06 microgram per kilogram 16 Apr 2026 |
| 6:6 Perfluorophosphinic acid: wet wt 2910 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.02 microgram per kilogram 16 Apr 2026 |
| 6:8 Perfluorophosphinic acid: wet wt 2909 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.038 microgram per kilogram 16 Apr 2026 |
| 8:2 Fluorotelomer sulfonic acid: wet wt 2908 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.03 microgram per kilogram 16 Apr 2026 |
| 8:8 Perfluorophosphinic acid: wet wt 2907 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.06 microgram per kilogram 16 Apr 2026 |
| 9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (F-53B Major): WW 2906 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.008 microgram per kilogram 16 Apr 2026 |
| Cadmium : Dry Wt 0254 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.012 milligram per kilogram 16 Apr 2026 |
| Cadmium : Wet Wt 8646 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 3.24 microgram per kilogram 16 Apr 2026 |
| cis-Heptachlor epoxide : Wet Wt 3542 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.6 microgram per kilogram 16 Apr 2026 |
| Copper : Dry Wt 0216 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 3.9 milligram per kilogram 16 Apr 2026 |
| Copper : Wet Wt 8649 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 1050 microgram per kilogram 16 Apr 2026 |
| Dioxins and Furans - WHOTEQ Lower Bound 3385 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| Dry Matter : % 9905 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 27% 16 Apr 2026 |
| HCH -alpha : Wet Wt 1488 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.1 microgram per kilogram 16 Apr 2026 |
| HCH -beta : Wet Wt 1492 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.1 microgram per kilogram 16 Apr 2026 |
| HCH -delta : Wet Wt 1496 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.1 microgram per kilogram 16 Apr 2026 |
| HCH -gamma : Wet Wt :- {Lindane} 1500 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.24 microgram per kilogram 16 Apr 2026 |
| Heptachlor : Wet Wt 1528 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.03 microgram per kilogram 16 Apr 2026 |
| Hexachlorobenzene : Wet Wt 5577 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.3 microgram per kilogram 16 Apr 2026 |
| Hexachlorobutadiene : Wet Wt 3252 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.1 microgram per kilogram 16 Apr 2026 |
| Hexafluoropropylene oxide dimer acid (Gen X): wet wt 2905 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.05 microgram per kilogram 16 Apr 2026 |
| Lead : Dry Wt 0329 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.11 milligram per kilogram 16 Apr 2026 |
| Lead : Wet Wt 8647 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 29.7 microgram per kilogram 16 Apr 2026 |
| Lipids : Total : Wet Wt 8680 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.7% 16 Apr 2026 |
| Mercury : Dry Wt 0270 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.11 milligram per kilogram 16 Apr 2026 |
| Mercury : Wet Wt 8648 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 29.7 microgram per kilogram 16 Apr 2026 |
| Nickel : Dry Wt 0430 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.3 milligram per kilogram 16 Apr 2026 |
| Nickel : Wet Wt 8654 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 81 microgram per kilogram 16 Apr 2026 |
| Octachlorodibenzo-p-dioxin : Wet Wt 3191 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| Octachlorodibenzofuran : Wet Wt 3192 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| PCB - 077 : Wet Wt 8905 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.00001 microgram per kilogram 16 Apr 2026 |
| PCB - 081 : Wet Wt 3190 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| PCB - 105 : Wet Wt 3744 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.00005 microgram per kilogram 16 Apr 2026 |
| PCB - 114 : Wet Wt 3189 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0 microgram per kilogram 16 Apr 2026 |
| PCB - 118 : Wet Wt 3153 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.00011 microgram per kilogram 16 Apr 2026 |
| PCB - 123 : Wet Wt 3188 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0 microgram per kilogram 16 Apr 2026 |
| PCB - 126 : Wet Wt 8906 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| PCB - 156 : Wet Wt 3740 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.00002 microgram per kilogram 16 Apr 2026 |
| PCB - 157 : Wet Wt 3185 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0 microgram per kilogram 16 Apr 2026 |
| PCB - 167 : Wet Wt 3183 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.00001 microgram per kilogram 16 Apr 2026 |
| PCB - 169 : Wet Wt 8907 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| PCB - 189 : Wet Wt 3182 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0 microgram per kilogram 16 Apr 2026 |
| Pentachlorobenzene : Wet Wt 3361 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.2 microgram per kilogram 16 Apr 2026 |
| Perfluoro(perfluoroethyl)cyclohexanesulfonic acid: wet wt 2904 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.01 microgram per kilogram 16 Apr 2026 |
| Perfluorobutane sulfonic acid : wet wt 3037 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.008 microgram per kilogram 16 Apr 2026 |
| Perfluorobutanoic acid : wet wt 3036 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.06 microgram per kilogram 16 Apr 2026 |
| Perfluorobutylsulfonamide (perfluorobutane sulfonamide) : wet wt 2903 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.58 microgram per kilogram 16 Apr 2026 |
| Perfluorodecane sulphonic acid : wet wt 3035 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.04 microgram per kilogram 16 Apr 2026 |
| Perfluorodecanoic acid : wet wt 3034 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.66 microgram per kilogram 16 Apr 2026 |
| Perfluorododecanoic acid : wet wt 3033 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 1.3 microgram per kilogram 16 Apr 2026 |
| Perfluoroheptanesulphonic acid : wet wt 3032 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.029 microgram per kilogram 16 Apr 2026 |
| Perfluoroheptanoic acid : wet wt 3031 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.02 microgram per kilogram 16 Apr 2026 |
| Perfluorohexanesulfonamide: wet wt 2902 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.13 microgram per kilogram 16 Apr 2026 |
| Perfluorohexanesulphonic acid - branched 2860 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.02 microgram per kilogram 16 Apr 2026 |
| Perfluorohexanesulphonic acid - linear 2859 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.11 microgram per kilogram 16 Apr 2026 |
| Perfluorohexanesulphonic acid : wet wt 3029 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.13 microgram per kilogram 16 Apr 2026 |
| Perfluorohexanoic acid : wet wt 3016 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.01 microgram per kilogram 16 Apr 2026 |
| Perfluorononanesulfonic acid: wet wt 2901 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.03 microgram per kilogram 16 Apr 2026 |
| Perfluorononanoic acid : wet wt 3015 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.1 microgram per kilogram 16 Apr 2026 |
| Perfluorooctane sulphonamide : wet wt 3014 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.2 microgram per kilogram 16 Apr 2026 |
| Perfluorooctanesulphanoate - branched 2862 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.88 microgram per kilogram 16 Apr 2026 |
| Perfluorooctanesulphanoate - linear 2861 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 5.9 microgram per kilogram 16 Apr 2026 |
| Perfluorooctanoic acid : Wet Wt 3376 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.03 microgram per kilogram 16 Apr 2026 |
| Perfluorooctylsulphonate anion : Wet Wt 3375 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 6.8 microgram per kilogram 16 Apr 2026 |
| Perfluoropentane sulphonic acid : wet wt 3012 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.02 microgram per kilogram 16 Apr 2026 |
| Perfluoropentanoic acid : wet wt 3011 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.038 microgram per kilogram 16 Apr 2026 |
| Perfluorotetradecanoic acid : wet wt 3006 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.6 microgram per kilogram 16 Apr 2026 |
| Perfluorotridecanoic acid : wet wt 3005 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.31 microgram per kilogram 16 Apr 2026 |
| Perfluoroundecanoic acid : wet wt 3003 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 0.28 microgram per kilogram 16 Apr 2026 |
| Quinoxyfen : Wet Wt 3360 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 1 microgram per kilogram 16 Apr 2026 |
| Sample Preparation 8394 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 1 text result 16 Apr 2026 |
| trans-Heptachlor epoxide : Wet Wt 3543 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 0.7 microgram per kilogram 16 Apr 2026 |
| Tributyl Tin : Wet Wt as Cation 4060 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | below 20 microgram per kilogram 16 Apr 2026 |
| Zinc : Dry Wt 0246 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 110 milligram per kilogram 16 Apr 2026 |
| Zinc : Wet Wt 8651 | Any fish - not including flatfish - whole animal | 4 | Apr 2026 – Apr 2026 | 29700 microgram per kilogram 16 Apr 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.