Lydiard Brook above Ray (Wilts)
EA name: LYDIARD BROOK ABOVE RAY (WILTS)
Environment Agency sampling point TH-PUTR0251 · 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
- 18 Aug 2026, 08:4944 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 22 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 Environmental monitoring statutory (EU directives)
- Where
- National Grid 412140, 186900As published, to the nearest 10 m. Open in a map
- River, by its own name
- Lydiard Brook
- River, by the map
- Lydiard BrookPlaced on the river its name gives, 39 m from the line.
- Next gauge downstream
- Water Eaton On the River Ray · 9.6 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (22 samples)
2 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
48.5%
Sampled 15 Jun 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jun 2026, 11:11 | 48.5 | 48.5% |
| 12 May 2026, 08:39 | 80.8 | 80.8% |
| 20 Apr 2026, 14:11 | 114.6 | 114.6% |
| 4 Mar 2026, 13:48 | 108.1 | 108.1% |
| 2 Feb 2026, 10:25 | 96.4 | 96.4% |
| 8 Jan 2026, 09:24 | 95.9 | 95.9% |
| 8 Dec 2025, 14:48 | 96.5 | 96.5% |
| 19 Nov 2025, 14:51 | 90 | 90% |
| 10 Oct 2025, 12:15 | 73.2 | 73.2% |
| 16 Apr 2025, 12:52 | 102 | 102% |
| 10 Mar 2025, 09:33 | 106.1 | 106.1% |
| 4 Feb 2025, 13:56 | 100.1 | 100.1% |
| 10 Jan 2025, 09:30 | 93.8 | 93.8% |
| 3 Dec 2024, 09:28 | 90.5 | 90.5% |
| 5 Nov 2024, 12:47 | 77.3 | 77.3% |
| 8 Oct 2024, 10:13 | 79.1 | 79.1% |
| 12 Sep 2024, 09:39 | 63.8 | 63.8% |
| 9 Aug 2024, 10:42 | 51.9 | 51.9% |
| 5 Jul 2024, 11:17 | 51.4 | 51.4% |
| 20 Jun 2024, 08:14 | 54.3 | 54.3% |
Dissolved oxygen
as O2 · code 9924 · mg/l
4.7 mg/l
Sampled 15 Jun 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jun 2026, 11:11 | 4.7 | 4.7 mg/l |
| 12 May 2026, 08:39 | 8.95 | 8.95 mg/l |
| 20 Apr 2026, 14:11 | 12.1 | 12.1 mg/l |
| 4 Mar 2026, 13:48 | 12.2 | 12.2 mg/l |
| 2 Feb 2026, 10:25 | 11.6 | 11.6 mg/l |
| 8 Jan 2026, 09:24 | 12.8 | 12.8 mg/l |
| 8 Dec 2025, 14:48 | 11 | 11 mg/l |
| 19 Nov 2025, 14:51 | 10.9 | 10.9 mg/l |
| 10 Oct 2025, 12:15 | 7.69 | 7.69 mg/l |
| 16 Apr 2025, 12:52 | 11 | 11 mg/l |
| 10 Mar 2025, 09:33 | 12.2 | 12.2 mg/l |
| 4 Feb 2025, 13:56 | 12.2 | 12.2 mg/l |
| 10 Jan 2025, 09:30 | 12.2 | 12.2 mg/l |
| 3 Dec 2024, 09:28 | 10.6 | 10.6 mg/l |
| 5 Nov 2024, 12:47 | 8.47 | 8.47 mg/l |
| 8 Oct 2024, 10:13 | 8.35 | 8.35 mg/l |
| 12 Sep 2024, 09:39 | 6.8 | 6.8 mg/l |
| 9 Aug 2024, 10:42 | 4.88 | 4.88 mg/l |
| 5 Jul 2024, 11:17 | 4.99 | 4.99 mg/l |
| 20 Jun 2024, 08:14 | 5.23 | 5.23 mg/l |
Water temperature
code 0076 · °C
16.7 °C
Sampled 15 Jun 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jun 2026, 11:11 | 16.7 | 16.7 °C |
| 12 May 2026, 08:39 | 10.7 | 10.7 °C |
| 20 Apr 2026, 14:11 | 12.9 | 12.9 °C |
| 4 Mar 2026, 13:48 | 9.8 | 9.8 °C |
| 2 Feb 2026, 10:25 | 7.3 | 7.3 °C |
| 8 Jan 2026, 09:24 | 3.4 | 3.4 °C |
| 8 Dec 2025, 14:48 | 9.6 | 9.6 °C |
| 19 Nov 2025, 14:51 | 7.2 | 7.2 °C |
| 10 Oct 2025, 12:15 | 13 | 13 °C |
| 16 Apr 2025, 12:52 | 11.9 | 11.9 °C |
| 10 Mar 2025, 09:33 | 9.2 | 9.2 °C |
| 4 Feb 2025, 13:56 | 6.8 | 6.8 °C |
| 10 Jan 2025, 09:30 | 4.2 | 4.2 °C |
| 3 Dec 2024, 09:28 | 8.2 | 8.2 °C |
| 5 Nov 2024, 12:47 | 11.2 | 11.2 °C |
| 8 Oct 2024, 10:13 | 12.8 | 12.8 °C |
| 12 Sep 2024, 09:39 | 12.4 | 12.4 °C |
| 9 Aug 2024, 10:42 | 18.2 | 18.2 °C |
| 5 Jul 2024, 11:17 | 16.7 | 16.7 °C |
| 20 Jun 2024, 08:14 | 17 | 17 °C |
pH
code 0061
7.65
Sampled 15 Jun 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jun 2026, 11:11 | 7.65 | 7.65 |
| 12 May 2026, 08:39 | 8.14 | 8.14 |
| 20 Apr 2026, 14:11 | 8.28 | 8.28 |
| 4 Mar 2026, 13:48 | 8.37 | 8.37 |
| 2 Feb 2026, 10:25 | 8.02 | 8.02 |
| 8 Jan 2026, 09:24 | 8.25 | 8.25 |
| 8 Dec 2025, 14:48 | 8.1 | 8.1 |
| 19 Nov 2025, 14:51 | 8 | 8 |
| 10 Oct 2025, 12:15 | 7.9 | 7.9 |
| 16 Apr 2025, 12:52 | 8.22 | 8.22 |
| 10 Mar 2025, 09:33 | 8.2 | 8.2 |
| 4 Feb 2025, 13:56 | 8.25 | 8.25 |
| 10 Jan 2025, 09:30 | 8.04 | 8.04 |
| 3 Dec 2024, 09:28 | 8.05 | 8.05 |
| 5 Nov 2024, 12:47 | 7.95 | 7.95 |
| 8 Oct 2024, 10:13 | 7.88 | 7.88 |
| 12 Sep 2024, 09:39 | 7.67 | 7.67 |
| 9 Aug 2024, 10:42 | 7.7 | 7.7 |
| 5 Jul 2024, 11:17 | 7.7 | 7.7 |
| 20 Jun 2024, 08:14 | 7.71 | 7.71 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.18 mg/l
Sampled 15 Jun 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jun 2026, 11:11 | 0.18 | 0.18 mg/l |
| 12 May 2026, 08:39 | 0.051 | 0.051 mg/l |
| 20 Apr 2026, 14:11 | 0.04 | 0.04 mg/l |
| 4 Mar 2026, 13:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 2 Feb 2026, 10:25 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Jan 2026, 09:24 | <0.03 | below 0.03 mg/l (not detected above this) |
| 8 Dec 2025, 14:48 | <0.03 | below 0.03 mg/l (not detected above this) |
| 19 Nov 2025, 14:51 | 0.084 | 0.084 mg/l |
| 10 Oct 2025, 12:15 | <0.03 | below 0.03 mg/l (not detected above this) |
| 16 Apr 2025, 12:52 | 0.064 | 0.064 mg/l |
| 10 Mar 2025, 09:33 | 0.087 | 0.087 mg/l |
| 4 Feb 2025, 13:56 | 0.042 | 0.042 mg/l |
| 10 Jan 2025, 09:30 | 0.065 | 0.065 mg/l |
| 3 Dec 2024, 09:28 | 0.039 | 0.039 mg/l |
| 5 Nov 2024, 12:47 | 0.072 | 0.072 mg/l |
| 8 Oct 2024, 10:13 | 0.044 | 0.044 mg/l |
| 12 Sep 2024, 09:39 | 0.11 | 0.11 mg/l |
| 9 Aug 2024, 10:42 | 0.065 | 0.065 mg/l |
| 5 Jul 2024, 11:17 | 0.072 | 0.072 mg/l |
| 20 Jun 2024, 08:14 | 0.15 | 0.15 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
0.328 mg/l
Sampled 15 Jun 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jun 2026, 11:11 | 0.328 | 0.328 mg/l |
| 12 May 2026, 08:39 | 0.196 | 0.196 mg/l |
| 20 Apr 2026, 14:11 | 0.324 | 0.324 mg/l |
| 4 Mar 2026, 13:48 | 3.29 | 3.29 mg/l |
| 2 Feb 2026, 10:25 | 4.09 | 4.09 mg/l |
| 8 Jan 2026, 09:24 | 5.28 | 5.28 mg/l |
| 8 Dec 2025, 14:48 | 7.26 | 7.26 mg/l |
| 19 Nov 2025, 14:51 | 7.64 | 7.64 mg/l |
| 10 Oct 2025, 12:15 | 0.196 | 0.196 mg/l |
| 16 Apr 2025, 12:52 | 0.191 | 0.191 mg/l |
| 10 Mar 2025, 09:33 | 2.29 | 2.29 mg/l |
| 4 Feb 2025, 13:56 | 2.69 | 2.69 mg/l |
| 10 Jan 2025, 09:30 | 2.69 | 2.69 mg/l |
| 3 Dec 2024, 09:28 | 2.49 | 2.49 mg/l |
| 5 Nov 2024, 12:47 | 1.37 | 1.37 mg/l |
| 8 Oct 2024, 10:13 | 1.38 | 1.38 mg/l |
| 12 Sep 2024, 09:39 | 0.855 | 0.855 mg/l |
| 9 Aug 2024, 10:42 | <0.196 | below 0.196 mg/l (not detected above this) |
| 5 Jul 2024, 11:17 | 0.214 | 0.214 mg/l |
| 20 Jun 2024, 08:14 | 0.187 | 0.187 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.25 mg/l
Sampled 15 Jun 2026, 4 months ago · 19 results banked
Every result (19)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jun 2026, 11:11 | 0.25 | 0.25 mg/l |
| 12 May 2026, 08:39 | 0.096 | 0.096 mg/l |
| 20 Apr 2026, 14:11 | 0.024 | 0.024 mg/l |
| 4 Mar 2026, 13:48 | 0.04 | 0.04 mg/l |
| 2 Feb 2026, 10:25 | 0.075 | 0.075 mg/l |
| 8 Jan 2026, 09:24 | 0.047 | 0.047 mg/l |
| 8 Dec 2025, 14:48 | 0.063 | 0.063 mg/l |
| 19 Nov 2025, 14:51 | 0.07 | 0.07 mg/l |
| 10 Oct 2025, 12:15 | 0.24 | 0.24 mg/l |
| 16 Apr 2025, 12:52 | <0.01 | below 0.01 mg/l (not detected above this) |
| 10 Mar 2025, 09:33 | 0.035 | 0.035 mg/l |
| 4 Feb 2025, 13:56 | 0.066 | 0.066 mg/l |
| 10 Jan 2025, 09:30 | 0.076 | 0.076 mg/l |
| 5 Nov 2024, 12:47 | 0.057 | 0.057 mg/l |
| 8 Oct 2024, 10:13 | 0.057 | 0.057 mg/l |
| 12 Sep 2024, 09:39 | 0.11 | 0.11 mg/l |
| 9 Aug 2024, 10:42 | 0.16 | 0.16 mg/l |
| 5 Jul 2024, 11:17 | 0.14 | 0.14 mg/l |
| 20 Jun 2024, 08:14 | 0.079 | 0.079 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
484 µS/cm
Sampled 15 Jun 2026, 4 months ago · 20 results banked
Every result (20)
| Sampled | Result as published | Reads as |
|---|---|---|
| 15 Jun 2026, 11:11 | 484 | 484 µS/cm |
| 12 May 2026, 08:39 | 463 | 463 µS/cm |
| 20 Apr 2026, 14:11 | 496 | 496 µS/cm |
| 4 Mar 2026, 13:48 | 642 | 642 µS/cm |
| 2 Feb 2026, 10:25 | 573 | 573 µS/cm |
| 8 Jan 2026, 09:24 | 771 | 771 µS/cm |
| 8 Dec 2025, 14:48 | 667 | 667 µS/cm |
| 19 Nov 2025, 14:51 | 699 | 699 µS/cm |
| 10 Oct 2025, 12:15 | 410 | 410 µS/cm |
| 16 Apr 2025, 12:52 | 587 | 587 µS/cm |
| 10 Mar 2025, 09:33 | 708 | 708 µS/cm |
| 4 Feb 2025, 13:56 | 706 | 706 µS/cm |
| 10 Jan 2025, 09:30 | 684 | 684 µS/cm |
| 3 Dec 2024, 09:28 | 664 | 664 µS/cm |
| 5 Nov 2024, 12:47 | 701 | 701 µS/cm |
| 8 Oct 2024, 10:13 | 630 | 630 µS/cm |
| 12 Sep 2024, 09:39 | 404 | 404 µS/cm |
| 9 Aug 2024, 10:42 | 557 | 557 µS/cm |
| 5 Jul 2024, 11:17 | 555 | 555 µS/cm |
| 20 Jun 2024, 08:14 | 525 | 525 µS/cm |
Everything measured here
14 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 14 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 20 | Jun 2024 – Jun 2026 | 48.5% 15 Jun 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 20 | Jun 2024 – Jun 2026 | 4.7 mg/l 15 Jun 2026 |
| Temperature of Water 0076 | River water | 20 | Jun 2024 – Jun 2026 | 16.7 °C 15 Jun 2026 |
| pH 0061 | River water | 20 | Jun 2024 – Jun 2026 | 7.65 15 Jun 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 20 | Jun 2024 – Jun 2026 | 0.18 mg/l 15 Jun 2026 |
| Nitrate as N 0117 | River water | 20 | Jun 2024 – Jun 2026 | 0.328 mg/l 15 Jun 2026 |
| Orthophosphate, reactive as P 0180 | River water | 19 | Jun 2024 – Jun 2026 | 0.25 mg/l 15 Jun 2026 |
| Conductivity at 25 C 0077 | River water | 20 | Jun 2024 – Jun 2026 | 484 µS/cm 15 Jun 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 20 | Jun 2024 – Jun 2026 | 190 mg/l 15 Jun 2026 |
| Ammonia un-ionised as N 0119 | River water | 20 | Jun 2024 – Jun 2026 | 0.00243 mg/l 15 Jun 2026 |
| BOD : 5 Day ATU 0085 | River water | 20 | Jun 2024 – Jun 2026 | 2 mg/l 15 Jun 2026 |
| Nitrite as N 0118 | River water | 20 | Jun 2024 – Jun 2026 | 0.042 mg/l 15 Jun 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 20 | Jun 2024 – Jun 2026 | 0.37 mg/l 15 Jun 2026 |
| No flow /No sample 7668 | River water | 2 | Jul 2026 – Aug 2026 | No flow/discharge at sampling point 18 Aug 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.