Ray at Moredon Bridge, Swindon
EA name: RAY AT MOREDON BRIDGE, SWINDON
Environment Agency sampling point TH-PUTR0069 · 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 Sep 2026, 09:559 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 15 since 6 Nov 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) · results completed 1 Oct 2026
- Where
- National Grid 412100, 187300As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Ray
- River, by the map
- River RayPlaced on the river its name gives, 74 m from the line.
- Next gauge downstream
- Water Eaton On the River Ray · 8.8 km along the river
- Nearest gauge upstream
- Rodbourne On the River Ray · 2.0 km along the river
- Why it was sampled
- Environmental monitoring statutory (EU directives) (15 samples)
Results here were completed a median of 2 days after the sample was taken (2 to 5 days, 4 samples).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
84.2%
Sampled 29 Sep 2026, 9 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Sep 2026, 09:55 | 84.2 | 84.2% |
| 18 Aug 2026, 09:05 | 69.5 | 69.5% |
| 23 Jul 2026, 09:56 | 97.2 | 97.2% |
| 15 Jun 2026, 11:01 | 112.3 | 112.3% |
| 29 May 2026, 10:08 | 102.7 | 102.7% |
| 20 Apr 2026, 13:56 | 133.6 | 133.6% |
| 17 Mar 2026, 14:42 | 111.1 | 111.1% |
| 2 Feb 2026, 10:34 | 91.3 | 91.3% |
| 8 Jan 2026, 09:39 | 96.6 | 96.6% |
| 12 Dec 2025, 13:50 | 92 | 92% |
| 19 Nov 2025, 14:44 | 95.1 | 95.1% |
| 10 Oct 2025, 12:06 | 93.8 | 93.8% |
| 8 Apr 2025, 12:39 | 132.7 | 132.7% |
Dissolved oxygen
as O2 · code 9924 · mg/l
7.9 mg/l
Sampled 29 Sep 2026, 9 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Sep 2026, 09:55 | 7.9 | 7.9 mg/l |
| 18 Aug 2026, 09:05 | 6.18 | 6.18 mg/l |
| 23 Jul 2026, 09:56 | 8.68 | 8.68 mg/l |
| 15 Jun 2026, 11:01 | 10.6 | 10.6 mg/l |
| 29 May 2026, 10:08 | 9.56 | 9.56 mg/l |
| 20 Apr 2026, 13:56 | 13.4 | 13.4 mg/l |
| 17 Mar 2026, 14:42 | 11.6 | 11.6 mg/l |
| 2 Feb 2026, 10:34 | 10.5 | 10.5 mg/l |
| 8 Jan 2026, 09:39 | 11.3 | 11.3 mg/l |
| 12 Dec 2025, 13:50 | 9.82 | 9.82 mg/l |
| 19 Nov 2025, 14:44 | 10.3 | 10.3 mg/l |
| 10 Oct 2025, 12:06 | 8.97 | 8.97 mg/l |
| 8 Apr 2025, 12:39 | 13.7 | 13.7 mg/l |
Water temperature
code 0076 · °C
18.3 °C
Sampled 29 Sep 2026, 9 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Sep 2026, 09:55 | 18.3 | 18.3 °C |
| 18 Aug 2026, 09:05 | 21 | 21 °C |
| 23 Jul 2026, 09:56 | 20.8 | 20.8 °C |
| 15 Jun 2026, 11:01 | 17.9 | 17.9 °C |
| 29 May 2026, 10:08 | 18.7 | 18.7 °C |
| 20 Apr 2026, 13:56 | 15.2 | 15.2 °C |
| 17 Mar 2026, 14:42 | 13.2 | 13.2 °C |
| 2 Feb 2026, 10:34 | 9 | 9 °C |
| 8 Jan 2026, 09:39 | 8.6 | 8.6 °C |
| 12 Dec 2025, 13:50 | 12.3 | 12.3 °C |
| 19 Nov 2025, 14:44 | 11.8 | 11.8 °C |
| 10 Oct 2025, 12:06 | 17.4 | 17.4 °C |
| 8 Apr 2025, 12:39 | 13.8 | 13.8 °C |
pH
code 0061
7.86
Sampled 29 Sep 2026, 9 days ago · 15 results banked
Every result (15)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Sep 2026, 09:55 | 7.86 | 7.86 |
| 18 Aug 2026, 09:05 | 7.72 | 7.72 |
| 23 Jul 2026, 09:56 | 7.72 | 7.72 |
| 15 Jun 2026, 11:01 | 7.85 | 7.85 |
| 29 May 2026, 10:08 | 7.83 | 7.83 |
| 20 Apr 2026, 13:56 | 7.96 | 7.96 |
| 17 Mar 2026, 14:42 | 7.91 | 7.91 |
| 2 Feb 2026, 10:34 | 7.59 | 7.59 |
| 8 Jan 2026, 09:39 | 7.82 | 7.82 |
| 12 Dec 2025, 13:50 | 7.66 | 7.66 |
| 19 Nov 2025, 14:44 | 7.75 | 7.75 |
| 10 Oct 2025, 12:06 | 7.71 | 7.71 |
| 8 Apr 2025, 12:39 | 8.09 | 8.09 |
| 4 Mar 2024, 13:12 | 7.74 | 7.74 |
| 6 Nov 2023, 14:12 | 7.78 | 7.78 |
Ammonia
ammoniacal nitrogen as N · code 0111 · mg/l
0.037 mg/l
Sampled 29 Sep 2026, 9 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Sep 2026, 09:55 | 0.037 | 0.037 mg/l |
| 18 Aug 2026, 09:05 | <0.03 | below 0.03 mg/l (not detected above this) |
| 23 Jul 2026, 09:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 15 Jun 2026, 11:01 | <0.03 | below 0.03 mg/l (not detected above this) |
| 29 May 2026, 10:08 | <0.03 | below 0.03 mg/l (not detected above this) |
| 20 Apr 2026, 13:56 | <0.03 | below 0.03 mg/l (not detected above this) |
| 17 Mar 2026, 14:42 | 0.046 | 0.046 mg/l |
| 2 Feb 2026, 10:34 | 0.18 | 0.18 mg/l |
| 8 Jan 2026, 09:39 | 0.12 | 0.12 mg/l |
| 12 Dec 2025, 13:50 | 0.049 | 0.049 mg/l |
| 19 Nov 2025, 14:44 | 0.058 | 0.058 mg/l |
| 10 Oct 2025, 12:06 | 0.048 | 0.048 mg/l |
| 8 Apr 2025, 12:39 | 0.034 | 0.034 mg/l |
Nitrate
as nitrogen (N) · code 0117 · mg/l
20 mg/l
Sampled 29 Sep 2026, 9 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Sep 2026, 09:55 | 20 | 20 mg/l |
| 18 Aug 2026, 09:05 | 20.9 | 20.9 mg/l |
| 23 Jul 2026, 09:56 | 25.9 | 25.9 mg/l |
| 15 Jun 2026, 11:01 | 18.9 | 18.9 mg/l |
| 29 May 2026, 10:08 | 20.9 | 20.9 mg/l |
| 20 Apr 2026, 13:56 | 17 | 17 mg/l |
| 17 Mar 2026, 14:42 | 12 | 12 mg/l |
| 2 Feb 2026, 10:34 | 6.16 | 6.16 mg/l |
| 8 Jan 2026, 09:39 | 15 | 15 mg/l |
| 12 Dec 2025, 13:50 | 13 | 13 mg/l |
| 19 Nov 2025, 14:44 | 17 | 17 mg/l |
| 10 Oct 2025, 12:06 | 27 | 27 mg/l |
| 8 Apr 2025, 12:39 | 22 | 22 mg/l |
Phosphate
orthophosphate, reactive, as P · code 0180 · mg/l
0.37 mg/l
Sampled 29 Sep 2026, 9 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Sep 2026, 09:55 | 0.37 | 0.37 mg/l |
| 18 Aug 2026, 09:05 | 0.48 | 0.48 mg/l |
| 23 Jul 2026, 09:56 | 0.33 | 0.33 mg/l |
| 15 Jun 2026, 11:01 | 0.34 | 0.34 mg/l |
| 29 May 2026, 10:08 | 0.31 | 0.31 mg/l |
| 20 Apr 2026, 13:56 | 0.24 | 0.24 mg/l |
| 17 Mar 2026, 14:42 | 0.21 | 0.21 mg/l |
| 2 Feb 2026, 10:34 | 0.3 | 0.3 mg/l |
| 8 Jan 2026, 09:39 | 0.42 | 0.42 mg/l |
| 12 Dec 2025, 13:50 | 0.27 | 0.27 mg/l |
| 19 Nov 2025, 14:44 | 0.29 | 0.29 mg/l |
| 10 Oct 2025, 12:06 | 0.52 | 0.52 mg/l |
| 8 Apr 2025, 12:39 | 0.42 | 0.42 mg/l |
Conductivity
at 25 °C · code 0077 · µS/cm
1001 µS/cm
Sampled 29 Sep 2026, 9 days ago · 13 results banked
Every result (13)
| Sampled | Result as published | Reads as |
|---|---|---|
| 29 Sep 2026, 09:55 | 1001 | 1001 µS/cm |
| 18 Aug 2026, 09:05 | 1065 | 1065 µS/cm |
| 23 Jul 2026, 09:56 | 1099 | 1099 µS/cm |
| 15 Jun 2026, 11:01 | 959 | 959 µS/cm |
| 29 May 2026, 10:08 | 998 | 998 µS/cm |
| 20 Apr 2026, 13:56 | 994 | 994 µS/cm |
| 17 Mar 2026, 14:42 | 880 | 880 µS/cm |
| 2 Feb 2026, 10:34 | 635 | 635 µS/cm |
| 8 Jan 2026, 09:39 | 1062 | 1062 µS/cm |
| 12 Dec 2025, 13:50 | 858 | 858 µS/cm |
| 19 Nov 2025, 14:44 | 966 | 966 µS/cm |
| 10 Oct 2025, 12:06 | 1129 | 1129 µS/cm |
| 8 Apr 2025, 12:39 | 965 | 965 µS/cm |
Everything measured here
21 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 21 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 13 | Apr 2025 – Sep 2026 | 84.2% 29 Sep 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 13 | Apr 2025 – Sep 2026 | 7.9 mg/l 29 Sep 2026 |
| Temperature of Water 0076 | River water | 13 | Apr 2025 – Sep 2026 | 18.3 °C 29 Sep 2026 |
| pH 0061 | River water | 15 | Nov 2023 – Sep 2026 | 7.86 29 Sep 2026 |
| Ammoniacal Nitrogen as N 0111 | River water | 13 | Apr 2025 – Sep 2026 | 0.037 mg/l 29 Sep 2026 |
| Nitrate as N 0117 | River water | 13 | Apr 2025 – Sep 2026 | 20 mg/l 29 Sep 2026 |
| Orthophosphate, reactive as P 0180 | River water | 13 | Apr 2025 – Sep 2026 | 0.37 mg/l 29 Sep 2026 |
| Conductivity at 25 C 0077 | River water | 13 | Apr 2025 – Sep 2026 | 1001 µS/cm 29 Sep 2026 |
| Alkalinity to pH 4.5 as CaCO3 0162 | River water | 13 | Apr 2025 – Sep 2026 | 160 mg/l 29 Sep 2026 |
| Ammonia un-ionised as N 0119 | River water | 13 | Apr 2025 – Sep 2026 | 0.0009 mg/l 29 Sep 2026 |
| BOD : 5 Day ATU 0085 | River water | 7 | Apr 2025 – Mar 2026 | 1.7 mg/l 17 Mar 2026 |
| Cadmium, Dissolved 0106 | River water | 2 | Nov 2023 – Mar 2024 | 0.04 µg/l 4 Mar 2024 |
| Calcium, Dissolved 0239 | River water | 2 | Nov 2023 – Mar 2024 | 120 mg/l 4 Mar 2024 |
| Carbon, Organic, Dissolved as C :- {DOC} 0301 | River water | 2 | Nov 2023 – Mar 2024 | 5.8 mg/l 4 Mar 2024 |
| Lead : BLM Bioavailable 3377 | River water | 2 | Nov 2023 – Mar 2024 | 0.04 µg/l 4 Mar 2024 |
| Lead, Dissolved 0052 | River water | 2 | Nov 2023 – Mar 2024 | 0.25 µg/l 4 Mar 2024 |
| Magnesium, Dissolved 0235 | River water | 2 | Nov 2023 – Mar 2024 | 5.5 mg/l 4 Mar 2024 |
| Nickel : BLM Bioavailable 3878 | River water | 2 | Nov 2023 – Mar 2024 | 0.88 µg/l 4 Mar 2024 |
| Nickel, Dissolved 3410 | River water | 2 | Nov 2023 – Mar 2024 | 2.8 µg/l 4 Mar 2024 |
| Nitrite as N 0118 | River water | 13 | Apr 2025 – Sep 2026 | 0.047 mg/l 29 Sep 2026 |
| Nitrogen, Total Oxidised as N 0116 | River water | 13 | Apr 2025 – Sep 2026 | 20 mg/l 29 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.