Avon West Amesbury
EA name: AVON WEST AMESBURY
Environment Agency sampling point SW-C0110000 · 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
- 12 Aug 2026, 11:2650 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 23 since 4 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 414139, 141285As published, to the nearest 1 m. Open in a map
- River, by its own name
- Avon
- River, by the map
- River AvonPlaced on the river its name gives, 1 m from the line.
- Next gauge downstream
- Salisbury Ashley Road On the River Avon · 15 km along the river
- Nearest gauge upstream
- Amesbury On the River Avon · 3.0 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (17 samples)
Monitoring (national agency policy) (6 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
92.4%
Sampled 12 Aug 2026, 50 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 11:26 | 92.4 | 92.4% |
| 24 Jul 2026, 11:20 | 115.6 | 115.6% |
| 10 Jun 2026, 11:34 | 104 | 104% |
| 29 May 2026, 10:56 | 106.1 | 106.1% |
| 7 Apr 2026, 09:46 | 99.4 | 99.4% |
| 10 Mar 2026, 15:17 | 104.7 | 104.7% |
| 5 Feb 2026, 11:14 | 92 | 92% |
| 7 Jan 2026, 12:44 | 97.5 | 97.5% |
| 4 Dec 2025, 11:26 | 94.3 | 94.3% |
| 19 Nov 2025, 13:08 | 97.7 | 97.7% |
| 10 Oct 2025, 10:42 | 86.8 | 86.8% |
| 26 Sep 2025, 14:10 | 102.6 | 102.6% |
| 21 Aug 2025, 11:25 | 109.7 | 109.7% |
| 25 Jul 2025, 13:20 | 118.2 | 118.2% |
| 18 Jun 2025, 12:12 | 117.4 | 117.4% |
| 22 May 2025, 09:42 | 102.1 | 102.1% |
| 9 Apr 2025, 09:35 | 101.3 | 101.3% |
| 4 Mar 2024, 12:44 | 102.3 | 102.3% |
| 1 Feb 2024, 10:49 | 96 | 96% |
| 12 Jan 2024, 11:17 | 90.3 | 90.3% |
| 7 Dec 2023, 11:25 | 91.8 | 91.8% |
| 4 Oct 2023, 11:44 | 98.1 | 98.1% |
Dissolved oxygen
as O2 · code 9924 · mg/l
8.89 mg/l
Sampled 12 Aug 2026, 50 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 11:26 | 8.89 | 8.89 mg/l |
| 24 Jul 2026, 11:20 | 11 | 11 mg/l |
| 10 Jun 2026, 11:34 | 11 | 11 mg/l |
| 29 May 2026, 10:56 | 10.4 | 10.4 mg/l |
| 7 Apr 2026, 09:46 | 11.3 | 11.3 mg/l |
| 10 Mar 2026, 15:17 | 11.6 | 11.6 mg/l |
| 5 Feb 2026, 11:14 | 10.7 | 10.7 mg/l |
| 7 Jan 2026, 12:44 | 12.1 | 12.1 mg/l |
| 4 Dec 2025, 11:26 | 11.1 | 11.1 mg/l |
| 19 Nov 2025, 13:08 | 11.8 | 11.8 mg/l |
| 10 Oct 2025, 10:42 | 9.21 | 9.21 mg/l |
| 26 Sep 2025, 14:10 | 11.2 | 11.2 mg/l |
| 21 Aug 2025, 11:25 | 11.1 | 11.1 mg/l |
| 25 Jul 2025, 13:20 | 11.1 | 11.1 mg/l |
| 18 Jun 2025, 12:12 | 11.2 | 11.2 mg/l |
| 22 May 2025, 09:42 | 10.9 | 10.9 mg/l |
| 9 Apr 2025, 09:35 | 11.7 | 11.7 mg/l |
| 4 Mar 2024, 12:44 | 12.2 | 12.2 mg/l |
| 1 Feb 2024, 10:49 | 11.1 | 11.1 mg/l |
| 12 Jan 2024, 11:17 | 10.9 | 10.9 mg/l |
| 7 Dec 2023, 11:25 | 10.9 | 10.9 mg/l |
| 4 Oct 2023, 11:44 | 10.3 | 10.3 mg/l |
Water temperature
code 0076 · °C
17.1 °C
Sampled 12 Aug 2026, 50 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 11:26 | 17.1 | 17.1 °C |
| 24 Jul 2026, 11:20 | 17.5 | 17.5 °C |
| 10 Jun 2026, 11:34 | 12.9 | 12.9 °C |
| 29 May 2026, 10:56 | 16 | 16 °C |
| 7 Apr 2026, 09:46 | 9.6 | 9.6 °C |
| 10 Mar 2026, 15:17 | 10.7 | 10.7 °C |
| 5 Feb 2026, 11:14 | 8.6 | 8.6 °C |
| 7 Jan 2026, 12:44 | 6.2 | 6.2 °C |
| 4 Dec 2025, 11:26 | 8.1 | 8.1 °C |
| 19 Nov 2025, 13:08 | 7.2 | 7.2 °C |
| 10 Oct 2025, 10:42 | 12.6 | 12.6 °C |
| 26 Sep 2025, 14:10 | 11.3 | 11.3 °C |
| 21 Aug 2025, 11:25 | 14.9 | 14.9 °C |
| 25 Jul 2025, 13:20 | 18.1 | 18.1 °C |
| 18 Jun 2025, 12:12 | 17.3 | 17.3 °C |
| 22 May 2025, 09:42 | 12.5 | 12.5 °C |
| 9 Apr 2025, 09:35 | 8.9 | 8.9 °C |
| 4 Mar 2024, 12:44 | 7.7 | 7.7 °C |
| 1 Feb 2024, 10:49 | 9 | 9 °C |
| 12 Jan 2024, 11:17 | 7.2 | 7.2 °C |
| 7 Dec 2023, 11:25 | 7.8 | 7.8 °C |
| 4 Oct 2023, 11:44 | 13.2 | 13.2 °C |
pH
code 0061
7.85
Sampled 12 Aug 2026, 50 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 11:26 | 7.85 | 7.85 |
| 24 Jul 2026, 11:20 | 8.1 | 8.1 |
| 10 Jun 2026, 11:34 | 8 | 8 |
| 29 May 2026, 10:56 | 7.96 | 7.96 |
| 7 Apr 2026, 09:46 | 8.08 | 8.08 |
| 10 Mar 2026, 15:17 | 7.93 | 7.93 |
| 5 Feb 2026, 11:14 | 7.94 | 7.94 |
| 7 Jan 2026, 12:44 | 8.1 | 8.1 |
| 4 Dec 2025, 11:26 | 8.02 | 8.02 |
| 19 Nov 2025, 13:08 | 8 | 8 |
| 10 Oct 2025, 10:42 | 7.84 | 7.84 |
| 26 Sep 2025, 14:10 | 8.19 | 8.19 |
| 21 Aug 2025, 11:25 | 8.07 | 8.07 |
| 25 Jul 2025, 13:20 | 8.24 | 8.24 |
| 18 Jun 2025, 12:12 | 8.14 | 8.14 |
| 22 May 2025, 09:42 | 8.18 | 8.18 |
| 9 Apr 2025, 09:35 | 8.09 | 8.09 |
| 4 Mar 2024, 12:44 | 7.98 | 7.98 |
| 1 Feb 2024, 10:49 | 7.9 | 7.9 |
| 12 Jan 2024, 11:17 | 7.89 | 7.89 |
| 7 Dec 2023, 11:25 | 7.84 | 7.84 |
| 4 Oct 2023, 11:44 | 8.03 | 8.03 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.048 mg/l
Sampled 12 Aug 2026, 50 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 11:26 | 0.048 | 0.048 mg/l |
| 24 Jul 2026, 11:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Jun 2026, 11:34 | 0.031 | 0.031 mg/l |
| 29 May 2026, 10:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Apr 2026, 09:46 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Mar 2026, 15:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Feb 2026, 11:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Jan 2026, 12:44 | 0.09 | 0.09 mg/l |
| 4 Dec 2025, 11:26 | 0.072 | 0.072 mg/l |
| 19 Nov 2025, 13:08 | 0.044 | 0.044 mg/l |
| 10 Oct 2025, 10:42 | 0.047 | 0.047 mg/l |
| 26 Sep 2025, 14:10 | 0.041 | 0.041 mg/l |
| 21 Aug 2025, 11:25 | 0.036 | 0.036 mg/l |
| 25 Jul 2025, 13:20 | <0.03 | below 0.03 mg/l (not detected above this) |
| 18 Jun 2025, 12:12 | <0.03 | below 0.03 mg/l (not detected above this) |
| 22 May 2025, 09:42 | <0.03 | below 0.03 mg/l (not detected above this) |
| 9 Apr 2025, 09:35 | <0.03 | below 0.03 mg/l (not detected above this) |
| 4 Mar 2024, 12:44 | <0.03 | below 0.03 mg/l (not detected above this) |
| 1 Feb 2024, 10:49 | <0.03 | below 0.03 mg/l (not detected above this) |
| 12 Jan 2024, 11:17 | <0.03 | below 0.03 mg/l (not detected above this) |
| 7 Dec 2023, 11:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 10 Nov 2023, 14:17 | 0.035 | 0.035 mg/l |
| 4 Oct 2023, 11:44 | <0.03 | below 0.03 mg/l (not detected above this) |
Nitrate
as nitrogen (N) · code 0117 · mg/l
6.85 mg/l
Sampled 12 Aug 2026, 50 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 11:26 | 6.85 | 6.85 mg/l |
| 24 Jul 2026, 11:20 | 6.25 | 6.25 mg/l |
| 10 Jun 2026, 11:34 | 6.18 | 6.18 mg/l |
| 29 May 2026, 10:56 | 6.38 | 6.38 mg/l |
| 7 Apr 2026, 09:46 | 6.29 | 6.29 mg/l |
| 10 Mar 2026, 15:17 | 6.19 | 6.19 mg/l |
| 5 Feb 2026, 11:14 | 5.19 | 5.19 mg/l |
| 7 Jan 2026, 12:44 | 6.77 | 6.77 mg/l |
| 4 Dec 2025, 11:26 | 5.97 | 5.97 mg/l |
| 19 Nov 2025, 13:08 | 5.88 | 5.88 mg/l |
| 10 Oct 2025, 10:42 | 6.86 | 6.86 mg/l |
| 26 Sep 2025, 14:10 | 6.87 | 6.87 mg/l |
| 21 Aug 2025, 11:25 | 7.07 | 7.07 mg/l |
| 25 Jul 2025, 13:20 | 6.67 | 6.67 mg/l |
| 18 Jun 2025, 12:12 | 6.38 | 6.38 mg/l |
| 22 May 2025, 09:42 | 6.58 | 6.58 mg/l |
| 9 Apr 2025, 09:35 | 6.69 | 6.69 mg/l |
| 4 Mar 2024, 12:44 | 5.29 | 5.29 mg/l |
| 1 Feb 2024, 10:49 | 6.58 | 6.58 mg/l |
| 12 Jan 2024, 11:17 | 6.09 | 6.09 mg/l |
| 7 Dec 2023, 11:25 | 5.78 | 5.78 mg/l |
| 10 Nov 2023, 14:17 | 4.66 | 4.66 mg/l |
| 4 Oct 2023, 11:44 | 6.28 | 6.28 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.067 mg/l
Sampled 12 Aug 2026, 50 days ago · 23 results banked
Every result (23)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 11:26 | 0.067 | 0.067 mg/l |
| 24 Jul 2026, 11:20 | 0.074 | 0.074 mg/l |
| 10 Jun 2026, 11:34 | 0.081 | 0.081 mg/l |
| 29 May 2026, 10:56 | 0.067 | 0.067 mg/l |
| 7 Apr 2026, 09:46 | 0.06 | 0.06 mg/l |
| 10 Mar 2026, 15:17 | 0.071 | 0.071 mg/l |
| 5 Feb 2026, 11:14 | 0.12 | 0.12 mg/l |
| 7 Jan 2026, 12:44 | 0.077 | 0.077 mg/l |
| 4 Dec 2025, 11:26 | 0.13 | 0.13 mg/l |
| 19 Nov 2025, 13:08 | 0.12 | 0.12 mg/l |
| 10 Oct 2025, 10:42 | 0.099 | 0.099 mg/l |
| 26 Sep 2025, 14:10 | 0.088 | 0.088 mg/l |
| 21 Aug 2025, 11:25 | 0.084 | 0.084 mg/l |
| 25 Jul 2025, 13:20 | 0.075 | 0.075 mg/l |
| 18 Jun 2025, 12:12 | 0.079 | 0.079 mg/l |
| 22 May 2025, 09:42 | 0.062 | 0.062 mg/l |
| 9 Apr 2025, 09:35 | 0.036 | 0.036 mg/l |
| 4 Mar 2024, 12:44 | 0.12 | 0.12 mg/l |
| 1 Feb 2024, 10:49 | 0.089 | 0.089 mg/l |
| 12 Jan 2024, 11:17 | 0.089 | 0.089 mg/l |
| 7 Dec 2023, 11:25 | 0.14 | 0.14 mg/l |
| 10 Nov 2023, 14:17 | 0.089 | 0.089 mg/l |
| 4 Oct 2023, 11:44 | 0.094 | 0.094 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
592 µS/cm
Sampled 12 Aug 2026, 50 days ago · 22 results banked
Every result (22)
| Sampled | Result as published | Reads as |
|---|---|---|
| 12 Aug 2026, 11:26 | 592 | 592 µS/cm |
| 24 Jul 2026, 11:20 | 589 | 589 µS/cm |
| 10 Jun 2026, 11:34 | 582 | 582 µS/cm |
| 29 May 2026, 10:56 | 582 | 582 µS/cm |
| 7 Apr 2026, 09:46 | 579 | 579 µS/cm |
| 10 Mar 2026, 15:17 | 583 | 583 µS/cm |
| 5 Feb 2026, 11:14 | 553 | 553 µS/cm |
| 7 Jan 2026, 12:44 | 610 | 610 µS/cm |
| 4 Dec 2025, 11:26 | 614 | 614 µS/cm |
| 19 Nov 2025, 13:08 | 634 | 634 µS/cm |
| 10 Oct 2025, 10:42 | 622 | 622 µS/cm |
| 26 Sep 2025, 14:10 | 612 | 612 µS/cm |
| 21 Aug 2025, 11:25 | 628 | 628 µS/cm |
| 25 Jul 2025, 13:20 | 597 | 597 µS/cm |
| 18 Jun 2025, 12:12 | 583 | 583 µS/cm |
| 22 May 2025, 09:42 | 670 | 670 µS/cm |
| 9 Apr 2025, 09:35 | 582 | 582 µS/cm |
| 4 Mar 2024, 12:44 | 557 | 557 µS/cm |
| 1 Feb 2024, 10:49 | 596 | 596 µS/cm |
| 12 Jan 2024, 11:17 | 591 | 591 µS/cm |
| 7 Dec 2023, 11:25 | 584 | 584 µS/cm |
| 4 Oct 2023, 11:44 | 604 | 604 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 | 22 | Oct 2023 – Aug 2026 | 92.4% 12 Aug 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 22 | Oct 2023 – Aug 2026 | 8.89 mg/l 12 Aug 2026 |
| Temperature of Water 0076 | River water | 22 | Oct 2023 – Aug 2026 | 17.1 °C 12 Aug 2026 |
| pH 0061 | River water | 22 | Oct 2023 – Aug 2026 | 7.85 12 Aug 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 23 | Oct 2023 – Aug 2026 | 0.048 mg/l 12 Aug 2026 |
| Nitrate as N 0117 | River water | 23 | Oct 2023 – Aug 2026 | 6.85 mg/l 12 Aug 2026 |
| Orthophosphate, reactive as P 0180 | River water | 23 | Oct 2023 – Aug 2026 | 0.067 mg/l 12 Aug 2026 |
| Conductivity at 25 C 0077 | River water | 22 | Oct 2023 – Aug 2026 | 592 µS/cm 12 Aug 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 23 | Oct 2023 – Aug 2026 | 230 mg/l 12 Aug 2026 |
| Ammonia un-ionised as N 0119 | River water | 22 | Oct 2023 – Aug 2026 | 0.00105 mg/l 12 Aug 2026 |
| Nitrite as N 0118 | River water | 23 | Oct 2023 – Aug 2026 | 0.053 mg/l 12 Aug 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 23 | Oct 2023 – Aug 2026 | 6.9 mg/l 12 Aug 2026 |
| Solids, Suspended at 105 C 0135 | River water | 6 | Oct 2023 – Mar 2024 | 6.7 mg/l 4 Mar 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.