River Wylye at Norton Bavant
EA name: RIVER WYLYE AT NORTON BAVANT
Environment Agency sampling point SW-50240461 · 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
- 5 Mar 2026, 10:147 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 8 Oct 2026 and had nothing newer.
- Samples banked
- 18 since 12 Oct 2023 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Environmental monitoring statutory (EU directives)
- Where
- National Grid 390935, 142721As published, to the nearest 1 m. Open in a map
- River, by its own name
- Wylye
- River, by the map
- River WylyePlaced on the river its name gives, 7 m from the line.
- Next gauge downstream
- HEYTESBURY A36 0.2 km along the riverHeytesbury On the River Wylye · 0.2 km along the river
- Nearest gauge upstream
- Brixton Deverill On the River Wylye · 12 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (12 samples)
Monitoring (national agency policy) (6 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
101%
Sampled 5 Mar 2026, 7 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 10:14 | 101 | 101% |
| 6 Feb 2026, 12:10 | 95 | 95% |
| 20 Jan 2026, 09:55 | 96.3 | 96.3% |
| 2 Dec 2025, 10:36 | 93.6 | 93.6% |
| 5 Nov 2025, 10:13 | 91.9 | 91.9% |
| 6 Oct 2025, 13:39 | 105.4 | 105.4% |
| 17 Sep 2025, 15:25 | 94.1 | 94.1% |
| 5 Aug 2025, 11:09 | 105.7 | 105.7% |
| 28 Jul 2025, 10:26 | 97.1 | 97.1% |
| 25 Jun 2025, 10:15 | 98.7 | 98.7% |
| 27 May 2025, 10:22 | 100.8 | 100.8% |
| 11 Apr 2025, 12:09 | 124.6 | 124.6% |
| 19 Mar 2024, 11:12 | 100.1 | 100.1% |
| 21 Feb 2024, 10:44 | 96.2 | 96.2% |
| 16 Jan 2024, 09:46 | 99.5 | 99.5% |
| 13 Dec 2023, 11:23 | 94.5 | 94.5% |
| 6 Nov 2023, 10:50 | 95.8 | 95.8% |
| 12 Oct 2023, 09:56 | 87.9 | 87.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
11.6 mg/l
Sampled 5 Mar 2026, 7 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 10:14 | 11.6 | 11.6 mg/l |
| 6 Feb 2026, 12:10 | 10.8 | 10.8 mg/l |
| 20 Jan 2026, 09:55 | 11.2 | 11.2 mg/l |
| 2 Dec 2025, 10:36 | 10.9 | 10.9 mg/l |
| 5 Nov 2025, 10:13 | 9.68 | 9.68 mg/l |
| 6 Oct 2025, 13:39 | 11 | 11 mg/l |
| 17 Sep 2025, 15:25 | 9.55 | 9.55 mg/l |
| 5 Aug 2025, 11:09 | 10.5 | 10.5 mg/l |
| 28 Jul 2025, 10:26 | 9.92 | 9.92 mg/l |
| 25 Jun 2025, 10:15 | 9.82 | 9.82 mg/l |
| 27 May 2025, 10:22 | 10.5 | 10.5 mg/l |
| 11 Apr 2025, 12:09 | 13.4 | 13.4 mg/l |
| 19 Mar 2024, 11:12 | 11 | 11 mg/l |
| 21 Feb 2024, 10:44 | 10.9 | 10.9 mg/l |
| 16 Jan 2024, 09:46 | 12.7 | 12.7 mg/l |
| 13 Dec 2023, 11:23 | 10.9 | 10.9 mg/l |
| 6 Nov 2023, 10:50 | 10.8 | 10.8 mg/l |
| 12 Oct 2023, 09:56 | 9.1 | 9.1 mg/l |
Water temperature
code 0076 · °C
9.3 °C
Sampled 5 Mar 2026, 7 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 10:14 | 9.3 | 9.3 °C |
| 6 Feb 2026, 12:10 | 9.6 | 9.6 °C |
| 20 Jan 2026, 09:55 | 8.7 | 8.7 °C |
| 2 Dec 2025, 10:36 | 8.6 | 8.6 °C |
| 5 Nov 2025, 10:13 | 12.9 | 12.9 °C |
| 6 Oct 2025, 13:39 | 13.4 | 13.4 °C |
| 17 Sep 2025, 15:25 | 14.6 | 14.6 °C |
| 5 Aug 2025, 11:09 | 15.4 | 15.4 °C |
| 28 Jul 2025, 10:26 | 14.3 | 14.3 °C |
| 25 Jun 2025, 10:15 | 15.5 | 15.5 °C |
| 27 May 2025, 10:22 | 13.4 | 13.4 °C |
| 11 Apr 2025, 12:09 | 12.1 | 12.1 °C |
| 19 Mar 2024, 11:12 | 10.9 | 10.9 °C |
| 21 Feb 2024, 10:44 | 9.7 | 9.7 °C |
| 16 Jan 2024, 09:46 | 5.1 | 5.1 °C |
| 13 Dec 2023, 11:23 | 9.2 | 9.2 °C |
| 6 Nov 2023, 10:50 | 10.1 | 10.1 °C |
| 12 Oct 2023, 09:56 | 13.7 | 13.7 °C |
pH
code 0061
7.97
Sampled 5 Mar 2026, 7 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 10:14 | 7.97 | 7.97 |
| 6 Feb 2026, 12:10 | 7.97 | 7.97 |
| 20 Jan 2026, 09:55 | 8.06 | 8.06 |
| 2 Dec 2025, 10:36 | 7.84 | 7.84 |
| 5 Nov 2025, 10:13 | 7.9 | 7.9 |
| 6 Oct 2025, 13:39 | 8.14 | 8.14 |
| 17 Sep 2025, 15:25 | 7.96 | 7.96 |
| 5 Aug 2025, 11:09 | 8.26 | 8.26 |
| 28 Jul 2025, 10:26 | 8.17 | 8.17 |
| 25 Jun 2025, 10:15 | 7.81 | 7.81 |
| 27 May 2025, 10:22 | 8.15 | 8.15 |
| 11 Apr 2025, 12:09 | 8.51 | 8.51 |
| 19 Mar 2024, 11:12 | 8.03 | 8.03 |
| 21 Feb 2024, 10:44 | 7.95 | 7.95 |
| 16 Jan 2024, 09:46 | 8.06 | 8.06 |
| 13 Dec 2023, 11:23 | 7.94 | 7.94 |
| 6 Nov 2023, 10:50 | 7.86 | 7.86 |
| 12 Oct 2023, 09:56 | 7.84 | 7.84 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
below 0.03 mg/l (not detected above this)
Sampled 5 Mar 2026, 7 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 10:14 | <0.03 | below 0.03 mg/l (not detected above this) |
| 6 Feb 2026, 12:10 | 0.068 | 0.068 mg/l |
| 20 Jan 2026, 09:55 | 0.051 | 0.051 mg/l |
| 2 Dec 2025, 10:36 | 0.053 | 0.053 mg/l |
| 5 Nov 2025, 10:13 | 0.035 | 0.035 mg/l |
| 6 Oct 2025, 13:39 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Sep 2025, 15:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 5 Aug 2025, 11:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 28 Jul 2025, 10:26 | <0.03 | below 0.03 mg/l (not detected above this) |
| 25 Jun 2025, 10:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 27 May 2025, 10:22 | <0.03 | below 0.03 mg/l (not detected above this) |
| 11 Apr 2025, 12:09 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Mar 2024, 11:12 | 0.06 | 0.06 mg/l |
| 21 Feb 2024, 10:44 | 0.072 | 0.072 mg/l |
| 16 Jan 2024, 09:46 | 0.049 | 0.049 mg/l |
| 13 Dec 2023, 11:23 | 0.063 | 0.063 mg/l |
| 6 Nov 2023, 10:50 | 0.033 | 0.033 mg/l |
| 12 Oct 2023, 09:56 | 0.033 | 0.033 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
6.49 mg/l
Sampled 5 Mar 2026, 7 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 10:14 | 6.49 | 6.49 mg/l |
| 6 Feb 2026, 12:10 | 4.79 | 4.79 mg/l |
| 20 Jan 2026, 09:55 | 5.68 | 5.68 mg/l |
| 2 Dec 2025, 10:36 | 4.18 | 4.18 mg/l |
| 5 Nov 2025, 10:13 | 6.05 | 6.05 mg/l |
| 6 Oct 2025, 13:39 | 5.18 | 5.18 mg/l |
| 17 Sep 2025, 15:25 | 5.88 | 5.88 mg/l |
| 5 Aug 2025, 11:09 | 5.88 | 5.88 mg/l |
| 28 Jul 2025, 10:26 | 7.08 | 7.08 mg/l |
| 25 Jun 2025, 10:15 | 4.67 | 4.67 mg/l |
| 27 May 2025, 10:22 | 5.77 | 5.77 mg/l |
| 11 Apr 2025, 12:09 | 5.89 | 5.89 mg/l |
| 19 Mar 2024, 11:12 | 6.38 | 6.38 mg/l |
| 21 Feb 2024, 10:44 | 4.77 | 4.77 mg/l |
| 16 Jan 2024, 09:46 | 6.28 | 6.28 mg/l |
| 13 Dec 2023, 11:23 | 5.38 | 5.38 mg/l |
| 6 Nov 2023, 10:50 | 5.58 | 5.58 mg/l |
| 12 Oct 2023, 09:56 | 6.45 | 6.45 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.11 mg/l
Sampled 5 Mar 2026, 7 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 10:14 | 0.11 | 0.11 mg/l |
| 6 Feb 2026, 12:10 | 0.15 | 0.15 mg/l |
| 20 Jan 2026, 09:55 | 0.13 | 0.13 mg/l |
| 2 Dec 2025, 10:36 | 0.17 | 0.17 mg/l |
| 5 Nov 2025, 10:13 | 0.16 | 0.16 mg/l |
| 6 Oct 2025, 13:39 | 0.16 | 0.16 mg/l |
| 17 Sep 2025, 15:25 | 0.14 | 0.14 mg/l |
| 5 Aug 2025, 11:09 | 0.14 | 0.14 mg/l |
| 28 Jul 2025, 10:26 | 0.14 | 0.14 mg/l |
| 25 Jun 2025, 10:15 | 0.076 | 0.076 mg/l |
| 27 May 2025, 10:22 | 0.16 | 0.16 mg/l |
| 11 Apr 2025, 12:09 | 0.048 | 0.048 mg/l |
| 19 Mar 2024, 11:12 | 0.11 | 0.11 mg/l |
| 21 Feb 2024, 10:44 | 0.12 | 0.12 mg/l |
| 16 Jan 2024, 09:46 | 0.11 | 0.11 mg/l |
| 13 Dec 2023, 11:23 | 0.16 | 0.16 mg/l |
| 6 Nov 2023, 10:50 | 0.12 | 0.12 mg/l |
| 12 Oct 2023, 09:56 | 0.15 | 0.15 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
581 µS/cm
Sampled 5 Mar 2026, 7 months ago · 18 results banked
Every result (18)
| Sampled | Result as published | Reads as |
|---|---|---|
| 5 Mar 2026, 10:14 | 581 | 581 µS/cm |
| 6 Feb 2026, 12:10 | 520 | 520 µS/cm |
| 20 Jan 2026, 09:55 | 554 | 554 µS/cm |
| 2 Dec 2025, 10:36 | 490 | 490 µS/cm |
| 5 Nov 2025, 10:13 | 558 | 558 µS/cm |
| 6 Oct 2025, 13:39 | 525 | 525 µS/cm |
| 17 Sep 2025, 15:25 | 551 | 551 µS/cm |
| 5 Aug 2025, 11:09 | 523 | 523 µS/cm |
| 28 Jul 2025, 10:26 | 573 | 573 µS/cm |
| 25 Jun 2025, 10:15 | 509 | 509 µS/cm |
| 27 May 2025, 10:22 | 528 | 528 µS/cm |
| 11 Apr 2025, 12:09 | 520 | 520 µS/cm |
| 19 Mar 2024, 11:12 | 582 | 582 µS/cm |
| 21 Feb 2024, 10:44 | 526 | 526 µS/cm |
| 16 Jan 2024, 09:46 | 601 | 601 µS/cm |
| 13 Dec 2023, 11:23 | 561 | 561 µS/cm |
| 6 Nov 2023, 10:50 | 573 | 573 µS/cm |
| 12 Oct 2023, 09:56 | 578 | 578 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 | 18 | Oct 2023 – Mar 2026 | 101% 5 Mar 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 18 | Oct 2023 – Mar 2026 | 11.6 mg/l 5 Mar 2026 |
| Temperature of Water 0076 | River water | 18 | Oct 2023 – Mar 2026 | 9.3 °C 5 Mar 2026 |
| pH 0061 | River water | 18 | Oct 2023 – Mar 2026 | 7.97 5 Mar 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 18 | Oct 2023 – Mar 2026 | below 0.03 mg/l 5 Mar 2026 |
| Nitrate as N 0117 | River water | 18 | Oct 2023 – Mar 2026 | 6.49 mg/l 5 Mar 2026 |
| Orthophosphate, reactive as P 0180 | River water | 18 | Oct 2023 – Mar 2026 | 0.11 mg/l 5 Mar 2026 |
| Conductivity at 25 C 0077 | River water | 18 | Oct 2023 – Mar 2026 | 581 µS/cm 5 Mar 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 18 | Oct 2023 – Mar 2026 | 240 mg/l 5 Mar 2026 |
| Ammonia un-ionised as N 0119 | River water | 18 | Oct 2023 – Mar 2026 | below 0.00049 mg/l 5 Mar 2026 |
| Nitrite as N 0118 | River water | 18 | Oct 2023 – Mar 2026 | 0.012 mg/l 5 Mar 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 18 | Oct 2023 – Mar 2026 | 6.5 mg/l 5 Mar 2026 |
| Solids, Suspended at 105 C 0135 | River water | 6 | Oct 2023 – Mar 2024 | 13 mg/l 19 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.