River Parrett at Chiselborough
EA name: RIVER PARRETT AT CHISELBOROUGH (also listed as “R PARRETT CHISELBOROUGH”)
Environment Agency sampling point SW-60250592 · 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
- 29 May 2026, 14:304 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
- 25 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 Monitoring (national agency policy)
- Where
- National Grid 346066, 114457As published, to the nearest 1 m. Open in a map
- River, by its own name
- Parrett
- River, by the map
- River ParrettPlaced on the river its name gives, 4 m from the line.
- Next gauge downstream
- Gaw Bridge On the River Parrett · 8.4 km along the riverBeside Chiselborough: too close to say above or below.
- Why it was sampled
- Monitoring (national agency policy) (25 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
89.4%
Sampled 29 May 2026, 4 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:30 | 89.4 | 89.4% |
| 16 Apr 2026, 13:16 | 99.9 | 99.9% |
| 7 Apr 2026, 14:34 | 103.8 | 103.8% |
| 5 Mar 2026, 12:12 | 91.6 | 91.6% |
| 3 Feb 2026, 10:44 | 86.9 | 86.9% |
| 7 Jan 2026, 15:16 | 92.7 | 92.7% |
| 5 Dec 2025, 11:03 | 90.1 | 90.1% |
| 5 Nov 2025, 14:14 | 83.6 | 83.6% |
| 8 Oct 2025, 12:53 | 85.1 | 85.1% |
| 8 Sep 2025, 09:18 | 76.2 | 76.2% |
| 5 Aug 2025, 11:33 | 84.5 | 84.5% |
| 17 Jul 2025, 13:32 | 80.6 | 80.6% |
| 17 Jun 2025, 09:27 | 78.7 | 78.7% |
| 12 May 2025, 09:58 | 86.7 | 86.7% |
| 24 Apr 2025, 11:45 | 96.8 | 96.8% |
| 27 Mar 2025, 13:29 | 100 | 100% |
| 19 Feb 2025, 09:19 | 90.1 | 90.1% |
| 24 Jan 2025, 10:56 | 89.5 | 89.5% |
| 4 Dec 2024, 14:11 | 93.7 | 93.7% |
| 20 Nov 2024, 10:55 | 88.5 | 88.5% |
| 18 Oct 2024, 15:54 | 86.5 | 86.5% |
| 18 Sep 2024, 11:56 | 85.1 | 85.1% |
| 20 Aug 2024, 10:17 | 83.6 | 83.6% |
| 23 Jul 2024, 11:26 | 86.8 | 86.8% |
| 20 Jun 2024, 12:41 | 96.1 | 96.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.67 mg/l
Sampled 29 May 2026, 4 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:30 | 8.67 | 8.67 mg/l |
| 16 Apr 2026, 13:16 | 10.6 | 10.6 mg/l |
| 7 Apr 2026, 14:34 | 11 | 11 mg/l |
| 5 Mar 2026, 12:12 | 10.4 | 10.4 mg/l |
| 3 Feb 2026, 10:44 | 10.3 | 10.3 mg/l |
| 7 Jan 2026, 15:16 | 11.6 | 11.6 mg/l |
| 5 Dec 2025, 11:03 | 10.6 | 10.6 mg/l |
| 5 Nov 2025, 14:14 | 8.65 | 8.65 mg/l |
| 8 Oct 2025, 12:53 | 8.91 | 8.91 mg/l |
| 8 Sep 2025, 09:18 | 7.63 | 7.63 mg/l |
| 5 Aug 2025, 11:33 | 8.37 | 8.37 mg/l |
| 17 Jul 2025, 13:32 | 7.71 | 7.71 mg/l |
| 17 Jun 2025, 09:27 | 8 | 8 mg/l |
| 12 May 2025, 09:58 | 9.09 | 9.09 mg/l |
| 24 Apr 2025, 11:45 | 10.5 | 10.5 mg/l |
| 27 Mar 2025, 13:29 | 11.1 | 11.1 mg/l |
| 19 Feb 2025, 09:19 | 11 | 11 mg/l |
| 24 Jan 2025, 10:56 | 10.5 | 10.5 mg/l |
| 4 Dec 2024, 14:11 | 10.8 | 10.8 mg/l |
| 20 Nov 2024, 10:55 | 10.7 | 10.7 mg/l |
| 18 Oct 2024, 15:54 | 9.09 | 9.09 mg/l |
| 18 Sep 2024, 11:56 | 8.85 | 8.85 mg/l |
| 20 Aug 2024, 10:17 | 8.34 | 8.34 mg/l |
| 23 Jul 2024, 11:26 | 8.46 | 8.46 mg/l |
| 20 Jun 2024, 12:41 | 9.75 | 9.75 mg/l |
Water temperature
code 0076 · °C
16.7 °C
Sampled 29 May 2026, 4 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:30 | 16.7 | 16.7 °C |
| 16 Apr 2026, 13:16 | 12.6 | 12.6 °C |
| 7 Apr 2026, 14:34 | 12.5 | 12.5 °C |
| 5 Mar 2026, 12:12 | 9.5 | 9.5 °C |
| 3 Feb 2026, 10:44 | 7.9 | 7.9 °C |
| 7 Jan 2026, 15:16 | 5.9 | 5.9 °C |
| 5 Dec 2025, 11:03 | 8.1 | 8.1 °C |
| 5 Nov 2025, 14:14 | 13.7 | 13.7 °C |
| 8 Oct 2025, 12:53 | 13.2 | 13.2 °C |
| 8 Sep 2025, 09:18 | 15.2 | 15.2 °C |
| 5 Aug 2025, 11:33 | 15.7 | 15.7 °C |
| 17 Jul 2025, 13:32 | 17.4 | 17.4 °C |
| 17 Jun 2025, 09:27 | 14.5 | 14.5 °C |
| 12 May 2025, 09:58 | 13.1 | 13.1 °C |
| 24 Apr 2025, 11:45 | 11.7 | 11.7 °C |
| 27 Mar 2025, 13:29 | 10.6 | 10.6 °C |
| 19 Feb 2025, 09:19 | 6.7 | 6.7 °C |
| 24 Jan 2025, 10:56 | 8.2 | 8.2 °C |
| 4 Dec 2024, 14:11 | 8.9 | 8.9 °C |
| 20 Nov 2024, 10:55 | 7 | 7 °C |
| 18 Oct 2024, 15:54 | 13 | 13 °C |
| 18 Sep 2024, 11:56 | 13.5 | 13.5 °C |
| 20 Aug 2024, 10:17 | 15.4 | 15.4 °C |
| 23 Jul 2024, 11:26 | 16.5 | 16.5 °C |
| 20 Jun 2024, 12:41 | 14.6 | 14.6 °C |
pH
code 0061
8.08
Sampled 29 May 2026, 4 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:30 | 8.08 | 8.08 |
| 16 Apr 2026, 13:16 | 8.13 | 8.13 |
| 7 Apr 2026, 14:34 | 8.2 | 8.2 |
| 5 Mar 2026, 12:12 | 7.94 | 7.94 |
| 3 Feb 2026, 10:44 | 8.09 | 8.09 |
| 7 Jan 2026, 15:16 | 8.13 | 8.13 |
| 5 Dec 2025, 11:03 | 7.86 | 7.86 |
| 5 Nov 2025, 14:14 | 7.86 | 7.86 |
| 8 Oct 2025, 12:53 | 7.95 | 7.95 |
| 8 Sep 2025, 09:18 | 8.04 | 8.04 |
| 5 Aug 2025, 11:33 | 8.05 | 8.05 |
| 17 Jul 2025, 13:32 | 7.98 | 7.98 |
| 17 Jun 2025, 09:27 | 7.97 | 7.97 |
| 12 May 2025, 09:58 | 8.02 | 8.02 |
| 24 Apr 2025, 11:45 | 7.99 | 7.99 |
| 27 Mar 2025, 13:29 | 8.23 | 8.23 |
| 19 Feb 2025, 09:19 | 7.9 | 7.9 |
| 24 Jan 2025, 10:56 | 7.8 | 7.8 |
| 4 Dec 2024, 14:11 | 8 | 8 |
| 20 Nov 2024, 10:55 | 8.07 | 8.07 |
| 18 Oct 2024, 15:54 | 7.92 | 7.92 |
| 18 Sep 2024, 11:56 | 8.07 | 8.07 |
| 20 Aug 2024, 10:17 | 8.06 | 8.06 |
| 23 Jul 2024, 11:26 | 8.01 | 8.01 |
| 20 Jun 2024, 12:41 | 8.07 | 8.07 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.045 mg/l
Sampled 29 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:30 | 0.045 | 0.045 mg/l |
| 16 Apr 2026, 13:16 | 0.044 | 0.044 mg/l |
| 5 Mar 2026, 12:12 | 0.12 | 0.12 mg/l |
| 3 Feb 2026, 10:44 | 0.14 | 0.14 mg/l |
| 7 Jan 2026, 15:16 | 0.11 | 0.11 mg/l |
| 5 Dec 2025, 11:03 | 0.061 | 0.061 mg/l |
| 5 Nov 2025, 14:14 | 0.15 | 0.15 mg/l |
| 8 Oct 2025, 12:53 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Sep 2025, 09:18 | 0.076 | 0.076 mg/l |
| 5 Aug 2025, 11:33 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jul 2025, 13:32 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Jun 2025, 09:27 | 0.035 | 0.035 mg/l |
| 12 May 2025, 09:58 | 0.23 | 0.23 mg/l |
| 24 Apr 2025, 11:45 | 0.077 | 0.077 mg/l |
| 27 Mar 2025, 13:29 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Feb 2025, 09:19 | 0.14 | 0.14 mg/l |
| 24 Jan 2025, 10:56 | 0.3 | 0.3 mg/l |
| 4 Dec 2024, 14:11 | 0.057 | 0.057 mg/l |
| 20 Nov 2024, 10:55 | 0.072 | 0.072 mg/l |
| 18 Oct 2024, 15:54 | 0.04 | 0.04 mg/l |
| 18 Sep 2024, 11:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Aug 2024, 10:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Jul 2024, 11:26 | 0.044 | 0.044 mg/l |
| 20 Jun 2024, 12:41 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.86 mg/l
Sampled 29 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:30 | 4.86 | 4.86 mg/l |
| 16 Apr 2026, 13:16 | 4.45 | 4.45 mg/l |
| 5 Mar 2026, 12:12 | 4.06 | 4.06 mg/l |
| 3 Feb 2026, 10:44 | 4.05 | 4.05 mg/l |
| 7 Jan 2026, 15:16 | 5.93 | 5.93 mg/l |
| 5 Dec 2025, 11:03 | 6.08 | 6.08 mg/l |
| 5 Nov 2025, 14:14 | 8.77 | 8.77 mg/l |
| 8 Oct 2025, 12:53 | 5.19 | 5.19 mg/l |
| 8 Sep 2025, 09:18 | 4.17 | 4.17 mg/l |
| 5 Aug 2025, 11:33 | 5.79 | 5.79 mg/l |
| 17 Jul 2025, 13:32 | 5.69 | 5.69 mg/l |
| 17 Jun 2025, 09:27 | 4.58 | 4.58 mg/l |
| 12 May 2025, 09:58 | 4.97 | 4.97 mg/l |
| 24 Apr 2025, 11:45 | 4.86 | 4.86 mg/l |
| 27 Mar 2025, 13:29 | 5.38 | 5.38 mg/l |
| 19 Feb 2025, 09:19 | 3.86 | 3.86 mg/l |
| 24 Jan 2025, 10:56 | 1.27 | 1.27 mg/l |
| 4 Dec 2024, 14:11 | 3.57 | 3.57 mg/l |
| 20 Nov 2024, 10:55 | 2.97 | 2.97 mg/l |
| 18 Oct 2024, 15:54 | 3.48 | 3.48 mg/l |
| 18 Sep 2024, 11:56 | 4.38 | 4.38 mg/l |
| 20 Aug 2024, 10:17 | 5.09 | 5.09 mg/l |
| 23 Jul 2024, 11:26 | 4.07 | 4.07 mg/l |
| 20 Jun 2024, 12:41 | 4.58 | 4.58 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.18 mg/l
Sampled 29 May 2026, 4 months ago · 24 results banked
Every result (24)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:30 | 0.18 | 0.18 mg/l |
| 16 Apr 2026, 13:16 | 0.13 | 0.13 mg/l |
| 5 Mar 2026, 12:12 | 0.1 | 0.1 mg/l |
| 3 Feb 2026, 10:44 | 0.098 | 0.098 mg/l |
| 7 Jan 2026, 15:16 | 0.1 | 0.1 mg/l |
| 5 Dec 2025, 11:03 | 0.088 | 0.088 mg/l |
| 5 Nov 2025, 14:14 | 0.13 | 0.13 mg/l |
| 8 Oct 2025, 12:53 | 0.16 | 0.16 mg/l |
| 8 Sep 2025, 09:18 | 0.19 | 0.19 mg/l |
| 5 Aug 2025, 11:33 | 0.22 | 0.22 mg/l |
| 17 Jul 2025, 13:32 | 0.22 | 0.22 mg/l |
| 17 Jun 2025, 09:27 | 0.19 | 0.19 mg/l |
| 12 May 2025, 09:58 | 0.22 | 0.22 mg/l |
| 24 Apr 2025, 11:45 | 0.15 | 0.15 mg/l |
| 27 Mar 2025, 13:29 | 0.11 | 0.11 mg/l |
| 19 Feb 2025, 09:19 | 0.098 | 0.098 mg/l |
| 24 Jan 2025, 10:56 | 0.32 | 0.32 mg/l |
| 4 Dec 2024, 14:11 | 0.12 | 0.12 mg/l |
| 20 Nov 2024, 10:55 | 0.18 | 0.18 mg/l |
| 18 Oct 2024, 15:54 | 0.17 | 0.17 mg/l |
| 18 Sep 2024, 11:56 | 0.47 | 0.47 mg/l |
| 20 Aug 2024, 10:17 | 0.62 | 0.62 mg/l |
| 23 Jul 2024, 11:26 | 0.35 | 0.35 mg/l |
| 20 Jun 2024, 12:41 | 0.34 | 0.34 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
744 µS/cm
Sampled 29 May 2026, 4 months ago · 25 results banked
Every result (25)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 May 2026, 14:30 | 744 | 744 µS/cm |
| 16 Apr 2026, 13:16 | 659 | 659 µS/cm |
| 7 Apr 2026, 14:34 | 704 | 704 µS/cm |
| 5 Mar 2026, 12:12 | 658 | 658 µS/cm |
| 3 Feb 2026, 10:44 | 598 | 598 µS/cm |
| 7 Jan 2026, 15:16 | 739 | 739 µS/cm |
| 5 Dec 2025, 11:03 | 570 | 570 µS/cm |
| 5 Nov 2025, 14:14 | 615 | 615 µS/cm |
| 8 Oct 2025, 12:53 | 787 | 787 µS/cm |
| 8 Sep 2025, 09:18 | 668 | 668 µS/cm |
| 5 Aug 2025, 11:33 | 708 | 708 µS/cm |
| 17 Jul 2025, 13:32 | 788 | 788 µS/cm |
| 17 Jun 2025, 09:27 | 781 | 781 µS/cm |
| 12 May 2025, 09:58 | 748 | 748 µS/cm |
| 24 Apr 2025, 11:45 | 648 | 648 µS/cm |
| 27 Mar 2025, 13:29 | 714 | 714 µS/cm |
| 19 Feb 2025, 09:19 | 697 | 697 µS/cm |
| 24 Jan 2025, 10:56 | 300 | 300 µS/cm |
| 4 Dec 2024, 14:11 | 673 | 673 µS/cm |
| 20 Nov 2024, 10:55 | 642 | 642 µS/cm |
| 18 Oct 2024, 15:54 | 654 | 654 µS/cm |
| 18 Sep 2024, 11:56 | 740 | 740 µS/cm |
| 20 Aug 2024, 10:17 | 754 | 754 µS/cm |
| 23 Jul 2024, 11:26 | 712 | 712 µS/cm |
| 20 Jun 2024, 12:41 | 771 | 771 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 | 25 | Jun 2024 – May 2026 | 89.4% 29 May 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 25 | Jun 2024 – May 2026 | 8.67 mg/l 29 May 2026 |
| Temperature of Water 0076 | River water | 25 | Jun 2024 – May 2026 | 16.7 °C 29 May 2026 |
| pH 0061 | River water | 25 | Jun 2024 – May 2026 | 8.08 29 May 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 24 | Jun 2024 – May 2026 | 0.045 mg/l 29 May 2026 |
| Nitrate as N 0117 | River water | 24 | Jun 2024 – May 2026 | 4.86 mg/l 29 May 2026 |
| Orthophosphate, reactive as P 0180 | River water | 24 | Jun 2024 – May 2026 | 0.18 mg/l 29 May 2026 |
| Conductivity at 25 C 0077 | River water | 25 | Jun 2024 – May 2026 | 744 µS/cm 29 May 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 24 | Jun 2024 – May 2026 | 270 mg/l 29 May 2026 |
| Ammonia un-ionised as N 0119 | River water | 24 | Jun 2024 – May 2026 | 0.00134 mg/l 29 May 2026 |
| BOD : 5 Day ATU 0085 | River water | 23 | Jun 2024 – May 2026 | below 1 mg/l 29 May 2026 |
| Nitrite as N 0118 | River water | 24 | Jun 2024 – May 2026 | 0.036 mg/l 29 May 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 24 | Jun 2024 – May 2026 | 4.9 mg/l 29 May 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.