River Dun downstream of Wilton Water
EA name: RIVER DUN D/S WILTON WATER (also listed as “RSN0477 RIVER DUN D/S WILTON WATER”)
Environment Agency sampling point TH-RSN0477 · 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
- 17 Sep 2026, 11:3614 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 27 since 26 Jun 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 426326, 162343As published, to the nearest 1 m. Open in a map
- River, by its own name
- Dun
- River, by the map
- Not placedNearest line is 104 m away and its name does not agree. The river map cannot say which watercourse this is.
- Next gauge downstream
- Not known
- Why it was sampled
- Environmental monitoring statutory (EU directives) (22 samples)
Monitoring (national agency policy) (5 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
95.9%
Sampled 17 Sep 2026, 14 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:36 | 95.9 | 95.9% |
| 22 Jul 2026, 11:06 | 93.4 | 93.4% |
| 22 Jun 2026, 11:57 | 96.3 | 96.3% |
| 27 May 2026, 13:19 | 90.4 | 90.4% |
| 27 Apr 2026, 12:03 | 100.7 | 100.7% |
| 24 Mar 2026, 13:43 | 96.4 | 96.4% |
| 24 Feb 2026, 11:48 | 85.2 | 85.2% |
| 5 Jan 2026, 10:55 | 88.2 | 88.2% |
| 15 Dec 2025, 12:16 | 88.7 | 88.7% |
| 11 Nov 2025, 11:55 | 91.8 | 91.8% |
| 8 Oct 2025, 11:08 | 88.4 | 88.4% |
| 15 Sep 2025, 12:43 | 89.1 | 89.1% |
| 11 Aug 2025, 11:35 | 122.4 | 122.4% |
| 10 Jul 2025, 12:08 | 102.5 | 102.5% |
| 4 Jun 2025, 10:41 | 112.1 | 112.1% |
| 8 May 2025, 10:00 | 73.9 | 73.9% |
| 22 Apr 2025, 15:07 | 101.9 | 101.9% |
| 18 Mar 2025, 15:20 | 91.1 | 91.1% |
| 10 Feb 2025, 11:31 | 76.4 | 76.4% |
| 23 Jan 2025, 11:21 | 81 | 81% |
| 13 Dec 2024, 13:20 | 72.4 | 72.4% |
| 20 Nov 2024, 12:11 | 79.1 | 79.1% |
| 22 Oct 2024, 10:39 | 65.9 | 65.9% |
| 23 Sep 2024, 11:21 | 75.1 | 75.1% |
| 19 Aug 2024, 08:08 | 94.5 | 94.5% |
| 19 Jul 2024, 12:08 | 96.8 | 96.8% |
| 26 Jun 2024, 08:32 | 62.1 | 62.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
9.4 mg/l
Sampled 17 Sep 2026, 14 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:36 | 9.4 | 9.4 mg/l |
| 22 Jul 2026, 11:06 | 8.87 | 8.87 mg/l |
| 22 Jun 2026, 11:57 | 8.78 | 8.78 mg/l |
| 27 May 2026, 13:19 | 8.6 | 8.6 mg/l |
| 27 Apr 2026, 12:03 | 10.7 | 10.7 mg/l |
| 24 Mar 2026, 13:43 | 10.8 | 10.8 mg/l |
| 24 Feb 2026, 11:48 | 9.42 | 9.42 mg/l |
| 5 Jan 2026, 10:55 | 11.3 | 11.3 mg/l |
| 15 Dec 2025, 12:16 | 10.2 | 10.2 mg/l |
| 11 Nov 2025, 11:55 | 10.1 | 10.1 mg/l |
| 8 Oct 2025, 11:08 | 9.29 | 9.29 mg/l |
| 15 Sep 2025, 12:43 | 9.28 | 9.28 mg/l |
| 11 Aug 2025, 11:35 | 12 | 12 mg/l |
| 10 Jul 2025, 12:08 | 9.48 | 9.48 mg/l |
| 4 Jun 2025, 10:41 | 11.7 | 11.7 mg/l |
| 8 May 2025, 10:00 | 8.02 | 8.02 mg/l |
| 22 Apr 2025, 15:07 | 10.9 | 10.9 mg/l |
| 18 Mar 2025, 15:20 | 10.3 | 10.3 mg/l |
| 10 Feb 2025, 11:31 | 9.14 | 9.14 mg/l |
| 23 Jan 2025, 11:21 | 9.58 | 9.58 mg/l |
| 13 Dec 2024, 13:20 | 8.29 | 8.29 mg/l |
| 20 Nov 2024, 12:11 | 9.64 | 9.64 mg/l |
| 22 Oct 2024, 10:39 | 7.41 | 7.41 mg/l |
| 23 Sep 2024, 11:21 | 7.86 | 7.86 mg/l |
| 19 Aug 2024, 08:08 | 9.76 | 9.76 mg/l |
| 19 Jul 2024, 12:08 | 9.61 | 9.61 mg/l |
| 26 Jun 2024, 08:32 | 6.62 | 6.62 mg/l |
Water temperature
code 0076 · °C
16.2 °C
Sampled 17 Sep 2026, 14 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:36 | 16.2 | 16.2 °C |
| 22 Jul 2026, 11:06 | 17.7 | 17.7 °C |
| 22 Jun 2026, 11:57 | 19.7 | 19.7 °C |
| 27 May 2026, 13:19 | 17.6 | 17.6 °C |
| 27 Apr 2026, 12:03 | 12.6 | 12.6 °C |
| 24 Mar 2026, 13:43 | 10.4 | 10.4 °C |
| 24 Feb 2026, 11:48 | 10.8 | 10.8 °C |
| 5 Jan 2026, 10:55 | 4.9 | 4.9 °C |
| 15 Dec 2025, 12:16 | 9.3 | 9.3 °C |
| 11 Nov 2025, 11:55 | 11.1 | 11.1 °C |
| 8 Oct 2025, 11:08 | 13 | 13 °C |
| 15 Sep 2025, 12:43 | 13.4 | 13.4 °C |
| 11 Aug 2025, 11:35 | 16.1 | 16.1 °C |
| 10 Jul 2025, 12:08 | 19 | 19 °C |
| 4 Jun 2025, 10:41 | 13.2 | 13.2 °C |
| 8 May 2025, 10:00 | 11.6 | 11.6 °C |
| 22 Apr 2025, 15:07 | 12.1 | 12.1 °C |
| 18 Mar 2025, 15:20 | 10 | 10 °C |
| 10 Feb 2025, 11:31 | 7.5 | 7.5 °C |
| 23 Jan 2025, 11:21 | 8 | 8 °C |
| 13 Dec 2024, 13:20 | 9.3 | 9.3 °C |
| 20 Nov 2024, 12:11 | 6.8 | 6.8 °C |
| 22 Oct 2024, 10:39 | 10.1 | 10.1 °C |
| 23 Sep 2024, 11:21 | 13.2 | 13.2 °C |
| 19 Aug 2024, 08:08 | 13.8 | 13.8 °C |
| 19 Jul 2024, 12:08 | 15.6 | 15.6 °C |
| 26 Jun 2024, 08:32 | 12.4 | 12.4 °C |
pH
code 0061
8.28
Sampled 17 Sep 2026, 14 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:36 | 8.28 | 8.28 |
| 22 Jul 2026, 11:06 | 7.6 | 7.6 |
| 22 Jun 2026, 11:57 | 7.53 | 7.53 |
| 27 May 2026, 13:19 | 7.41 | 7.41 |
| 27 Apr 2026, 12:03 | 7.75 | 7.75 |
| 24 Mar 2026, 13:43 | 7.54 | 7.54 |
| 24 Feb 2026, 11:48 | 7.45 | 7.45 |
| 5 Jan 2026, 10:55 | 7.75 | 7.75 |
| 15 Dec 2025, 12:16 | 7.97 | 7.97 |
| 11 Nov 2025, 11:55 | 8.05 | 8.05 |
| 8 Oct 2025, 11:08 | 7.83 | 7.83 |
| 15 Sep 2025, 12:43 | 8.3 | 8.3 |
| 11 Aug 2025, 11:35 | 8.06 | 8.06 |
| 10 Jul 2025, 12:08 | 7.7 | 7.7 |
| 4 Jun 2025, 10:41 | 7.82 | 7.82 |
| 8 May 2025, 10:00 | 7.41 | 7.41 |
| 22 Apr 2025, 15:07 | 7.6 | 7.6 |
| 18 Mar 2025, 15:20 | 7.3 | 7.3 |
| 10 Feb 2025, 11:31 | 7.32 | 7.32 |
| 23 Jan 2025, 11:21 | 7.46 | 7.46 |
| 13 Dec 2024, 13:20 | 7.27 | 7.27 |
| 20 Nov 2024, 12:11 | 7.46 | 7.46 |
| 22 Oct 2024, 10:39 | 7.3 | 7.3 |
| 23 Sep 2024, 11:21 | 7.44 | 7.44 |
| 19 Aug 2024, 08:08 | 7.41 | 7.41 |
| 19 Jul 2024, 12:08 | 7.37 | 7.37 |
| 26 Jun 2024, 08:32 | 7.15 | 7.15 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.063 mg/l
Sampled 17 Sep 2026, 14 days ago · 26 results banked
Every result (26)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:36 | 0.063 | 0.063 mg/l |
| 22 Jul 2026, 11:06 | 0.046 | 0.046 mg/l |
| 22 Jun 2026, 11:57 | 0.1 | 0.1 mg/l |
| 27 May 2026, 13:19 | 0.12 | 0.12 mg/l |
| 27 Apr 2026, 12:03 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Mar 2026, 13:43 | <0.03 | below 0.03 mg/l (not detected above this) |
| 24 Feb 2026, 11:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Jan 2026, 10:55 | 0.093 | 0.093 mg/l |
| 15 Dec 2025, 12:16 | 0.12 | 0.12 mg/l |
| 11 Nov 2025, 11:55 | 0.12 | 0.12 mg/l |
| 8 Oct 2025, 11:08 | 0.11 | 0.11 mg/l |
| 15 Sep 2025, 12:43 | 0.16 | 0.16 mg/l |
| 11 Aug 2025, 11:35 | 0.13 | 0.13 mg/l |
| 10 Jul 2025, 12:08 | 0.068 | 0.068 mg/l |
| 4 Jun 2025, 10:41 | 0.032 | 0.032 mg/l |
| 8 May 2025, 10:00 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 Apr 2025, 15:07 | 0.036 | 0.036 mg/l |
| 18 Mar 2025, 15:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Feb 2025, 11:31 | 0.052 | 0.052 mg/l |
| 23 Jan 2025, 11:21 | 0.047 | 0.047 mg/l |
| 20 Nov 2024, 12:11 | 0.062 | 0.062 mg/l |
| 22 Oct 2024, 10:39 | 0.054 | 0.054 mg/l |
| 23 Sep 2024, 11:21 | 0.16 | 0.16 mg/l |
| 19 Aug 2024, 08:08 | 0.13 | 0.13 mg/l |
| 19 Jul 2024, 12:08 | 0.075 | 0.075 mg/l |
| 26 Jun 2024, 08:32 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
4.15 mg/l
Sampled 17 Sep 2026, 14 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:36 | 4.15 | 4.15 mg/l |
| 22 Jul 2026, 11:06 | 3.86 | 3.86 mg/l |
| 22 Jun 2026, 11:57 | 4.36 | 4.36 mg/l |
| 27 May 2026, 13:19 | 4.85 | 4.85 mg/l |
| 27 Apr 2026, 12:03 | 5.47 | 5.47 mg/l |
| 24 Mar 2026, 13:43 | 5.89 | 5.89 mg/l |
| 24 Feb 2026, 11:48 | 6.29 | 6.29 mg/l |
| 5 Jan 2026, 10:55 | 5.78 | 5.78 mg/l |
| 15 Dec 2025, 12:16 | 5.43 | 5.43 mg/l |
| 11 Nov 2025, 11:55 | 3.15 | 3.15 mg/l |
| 8 Oct 2025, 11:08 | 3.83 | 3.83 mg/l |
| 15 Sep 2025, 12:43 | 4.53 | 4.53 mg/l |
| 11 Aug 2025, 11:35 | 4.24 | 4.24 mg/l |
| 10 Jul 2025, 12:08 | 4.14 | 4.14 mg/l |
| 4 Jun 2025, 10:41 | 4.73 | 4.73 mg/l |
| 8 May 2025, 10:00 | 5.87 | 5.87 mg/l |
| 22 Apr 2025, 15:07 | 6.07 | 6.07 mg/l |
| 18 Mar 2025, 15:20 | 6.59 | 6.59 mg/l |
| 10 Feb 2025, 11:31 | 6.19 | 6.19 mg/l |
| 23 Jan 2025, 11:21 | 6.39 | 6.39 mg/l |
| 13 Dec 2024, 13:20 | 6.39 | 6.39 mg/l |
| 20 Nov 2024, 12:11 | 5.67 | 5.67 mg/l |
| 22 Oct 2024, 10:39 | 5.98 | 5.98 mg/l |
| 23 Sep 2024, 11:21 | 4.65 | 4.65 mg/l |
| 19 Aug 2024, 08:08 | 4.54 | 4.54 mg/l |
| 19 Jul 2024, 12:08 | 5.26 | 5.26 mg/l |
| 26 Jun 2024, 08:32 | 5.36 | 5.36 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.11 mg/l
Sampled 17 Sep 2026, 14 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:36 | 0.11 | 0.11 mg/l |
| 22 Jul 2026, 11:06 | 0.097 | 0.097 mg/l |
| 22 Jun 2026, 11:57 | 0.13 | 0.13 mg/l |
| 27 May 2026, 13:19 | 0.13 | 0.13 mg/l |
| 27 Apr 2026, 12:03 | 0.11 | 0.11 mg/l |
| 24 Mar 2026, 13:43 | 0.12 | 0.12 mg/l |
| 24 Feb 2026, 11:48 | 0.17 | 0.17 mg/l |
| 5 Jan 2026, 10:55 | 0.16 | 0.16 mg/l |
| 15 Dec 2025, 12:16 | 0.22 | 0.22 mg/l |
| 11 Nov 2025, 11:55 | 0.26 | 0.26 mg/l |
| 8 Oct 2025, 11:08 | 0.13 | 0.13 mg/l |
| 15 Sep 2025, 12:43 | 0.14 | 0.14 mg/l |
| 11 Aug 2025, 11:35 | 0.11 | 0.11 mg/l |
| 10 Jul 2025, 12:08 | 0.097 | 0.097 mg/l |
| 4 Jun 2025, 10:41 | 0.13 | 0.13 mg/l |
| 8 May 2025, 10:00 | 0.1 | 0.1 mg/l |
| 22 Apr 2025, 15:07 | 0.13 | 0.13 mg/l |
| 18 Mar 2025, 15:20 | 0.15 | 0.15 mg/l |
| 10 Feb 2025, 11:31 | 0.19 | 0.19 mg/l |
| 23 Jan 2025, 11:21 | 0.16 | 0.16 mg/l |
| 13 Dec 2024, 13:20 | 0.19 | 0.19 mg/l |
| 20 Nov 2024, 12:11 | 0.21 | 0.21 mg/l |
| 22 Oct 2024, 10:39 | 0.19 | 0.19 mg/l |
| 23 Sep 2024, 11:21 | 0.21 | 0.21 mg/l |
| 19 Aug 2024, 08:08 | 0.13 | 0.13 mg/l |
| 19 Jul 2024, 12:08 | 0.11 | 0.11 mg/l |
| 26 Jun 2024, 08:32 | 0.12 | 0.12 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
643 µS/cm
Sampled 17 Sep 2026, 14 days ago · 27 results banked
Every result (27)
| Sampled | Result as published | Reads as |
|---|---|---|
| 17 Sep 2026, 11:36 | 643 | 643 µS/cm |
| 22 Jul 2026, 11:06 | 638 | 638 µS/cm |
| 22 Jun 2026, 11:57 | 647 | 647 µS/cm |
| 27 May 2026, 13:19 | 644 | 644 µS/cm |
| 27 Apr 2026, 12:03 | 635 | 635 µS/cm |
| 24 Mar 2026, 13:43 | 630 | 630 µS/cm |
| 24 Feb 2026, 11:48 | 634 | 634 µS/cm |
| 5 Jan 2026, 10:55 | 687 | 687 µS/cm |
| 15 Dec 2025, 12:16 | 643 | 643 µS/cm |
| 11 Nov 2025, 11:55 | 599 | 599 µS/cm |
| 8 Oct 2025, 11:08 | 632 | 632 µS/cm |
| 15 Sep 2025, 12:43 | 638 | 638 µS/cm |
| 11 Aug 2025, 11:35 | 640 | 640 µS/cm |
| 10 Jul 2025, 12:08 | 648 | 648 µS/cm |
| 4 Jun 2025, 10:41 | 639 | 639 µS/cm |
| 8 May 2025, 10:00 | 640 | 640 µS/cm |
| 22 Apr 2025, 15:07 | 645 | 645 µS/cm |
| 18 Mar 2025, 15:20 | 634 | 634 µS/cm |
| 10 Feb 2025, 11:31 | 606 | 606 µS/cm |
| 23 Jan 2025, 11:21 | 634 | 634 µS/cm |
| 13 Dec 2024, 13:20 | 628 | 628 µS/cm |
| 20 Nov 2024, 12:11 | 639 | 639 µS/cm |
| 22 Oct 2024, 10:39 | 624 | 624 µS/cm |
| 23 Sep 2024, 11:21 | 600 | 600 µS/cm |
| 19 Aug 2024, 08:08 | 654 | 654 µS/cm |
| 19 Jul 2024, 12:08 | 654 | 654 µS/cm |
| 26 Jun 2024, 08:32 | 656 | 656 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 | 27 | Jun 2024 – Sep 2026 | 95.9% 17 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 27 | Jun 2024 – Sep 2026 | 9.4 mg/l 17 Sep 2026 |
| Temperature of Water 0076 | River water | 27 | Jun 2024 – Sep 2026 | 16.2 °C 17 Sep 2026 |
| pH 0061 | River water | 27 | Jun 2024 – Sep 2026 | 8.28 17 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 26 | Jun 2024 – Sep 2026 | 0.063 mg/l 17 Sep 2026 |
| Nitrate as N 0117 | River water | 27 | Jun 2024 – Sep 2026 | 4.15 mg/l 17 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 27 | Jun 2024 – Sep 2026 | 0.11 mg/l 17 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 27 | Jun 2024 – Sep 2026 | 643 µS/cm 17 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 27 | Jun 2024 – Sep 2026 | 270 mg/l 17 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 26 | Jun 2024 – Sep 2026 | 0.00181 mg/l 17 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 25 | Jun 2024 – Sep 2026 | below 3 mg/l 17 Sep 2026 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 19 | Jan 2025 – Sep 2026 | 2 mg/l 17 Sep 2026 |
| Chloride 0172 | River water | 20 | Jan 2025 – Sep 2026 | 21 mg/l 17 Sep 2026 |
| Flow Type 2896 | River water | 20 | Jan 2025 – Sep 2026 | Low Flow 17 Sep 2026 |
| Nitrite as N 0118 | River water | 27 | Jun 2024 – Sep 2026 | 0.049 mg/l 17 Sep 2026 |
| Nitrogen, Total as N 9686 | River water | 20 | Jan 2025 – Sep 2026 | 4.6 mg/l 17 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 27 | Jun 2024 – Sep 2026 | 4.2 mg/l 17 Sep 2026 |
| Phosphorus, Total as P 0348 | River water | 20 | Jan 2025 – Sep 2026 | 0.14 mg/l 17 Sep 2026 |
| Silica, reactive as SiO2 0182 | River water | 20 | Jan 2025 – Sep 2026 | 23 mg/l 17 Sep 2026 |
| Solids, Suspended at 105 C 0135 | River water | 9 | Dec 2025 – Sep 2026 | 8.1 mg/l 17 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.