Kennet downstream Swallowhead Springs
EA name: KENNET DOWNSTREAM SWALLOWHEAD SPRINGS
Environment Agency sampling point TH-WRPNTS01 · 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
- 21 Aug 2026, 13:2448 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
- Samples banked
- 17 since 16 Apr 2025 Imported periods: 1 Oct 2023 – 8 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 410421, 168188As published, to the nearest 1 m. Open in a map
- River, by its own name
- Kennet
- River, by the map
- River KennetPlaced on the river its name gives, 3 m from the line.
- Next gauge downstream
- Marlborough On the River Kennet · 11 km along the river
- Nearest gauge upstream
- Winterborne Monkton On the River Kennet · 5.6 km along the river
- Why it was sampled
- Monitoring (national agency policy) (17 samples)
7 visits found no water to sample (recorded as “No flow”).
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
43%
Sampled 24 Jun 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Jun 2026, 11:26 | 43 | 43% |
| 22 May 2026, 11:10 | 88.5 | 88.5% |
| 15 Apr 2026, 14:31 | 114 | 114% |
| 30 Mar 2026, 11:33 | 112.5 | 112.5% |
| 18 Feb 2026, 11:45 | 101.9 | 101.9% |
| 19 Jan 2026, 12:16 | 93.7 | 93.7% |
| 29 Dec 2025, 11:14 | 98.5 | 98.5% |
| 13 Jun 2025, 11:34 | 114.9 | 114.9% |
| 20 May 2025, 09:39 | 101.5 | 101.5% |
| 16 Apr 2025, 16:11 | 125.6 | 125.6% |
Dissolved oxygen
as O2 · code 9924 · mg/l
4.46 mg/l
Sampled 24 Jun 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Jun 2026, 11:26 | 4.46 | 4.46 mg/l |
| 22 May 2026, 11:10 | 9.72 | 9.72 mg/l |
| 15 Apr 2026, 14:31 | 12.4 | 12.4 mg/l |
| 30 Mar 2026, 11:33 | 12.9 | 12.9 mg/l |
| 18 Feb 2026, 11:45 | 12.5 | 12.5 mg/l |
| 19 Jan 2026, 12:16 | 10.7 | 10.7 mg/l |
| 29 Dec 2025, 11:14 | 12.3 | 12.3 mg/l |
| 13 Jun 2025, 11:34 | 11.4 | 11.4 mg/l |
| 20 May 2025, 09:39 | 11.3 | 11.3 mg/l |
| 16 Apr 2025, 16:11 | 13.5 | 13.5 mg/l |
Water temperature
code 0076 · °C
13.6 °C
Sampled 24 Jun 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Jun 2026, 11:26 | 13.6 | 13.6 °C |
| 22 May 2026, 11:10 | 11.1 | 11.1 °C |
| 15 Apr 2026, 14:31 | 11.6 | 11.6 °C |
| 30 Mar 2026, 11:33 | 9.3 | 9.3 °C |
| 18 Feb 2026, 11:45 | 6.5 | 6.5 °C |
| 19 Jan 2026, 12:16 | 9.5 | 9.5 °C |
| 29 Dec 2025, 11:14 | 5.8 | 5.8 °C |
| 13 Jun 2025, 11:34 | 15.5 | 15.5 °C |
| 20 May 2025, 09:39 | 10.5 | 10.5 °C |
| 16 Apr 2025, 16:11 | 11.9 | 11.9 °C |
pH
code 0061
7.24
Sampled 24 Jun 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Jun 2026, 11:26 | 7.24 | 7.24 |
| 22 May 2026, 11:10 | 7.46 | 7.46 |
| 15 Apr 2026, 14:31 | 7.67 | 7.67 |
| 30 Mar 2026, 11:33 | 7.71 | 7.71 |
| 18 Feb 2026, 11:45 | 8.06 | 8.06 |
| 19 Jan 2026, 12:16 | 7.95 | 7.95 |
| 29 Dec 2025, 11:14 | 8.4 | 8.4 |
| 13 Jun 2025, 11:34 | 7.63 | 7.63 |
| 20 May 2025, 09:39 | 7.45 | 7.45 |
| 16 Apr 2025, 16:11 | 7.76 | 7.76 |
Conductivity
at 25 °C · code 0077 · µS/cm
644 µS/cm
Sampled 24 Jun 2026, 3 months ago · 10 results banked
Every result (10)
| Sampled | Result as published | Reads as |
|---|---|---|
| 24 Jun 2026, 11:26 | 644 | 644 µS/cm |
| 22 May 2026, 11:10 | 644 | 644 µS/cm |
| 15 Apr 2026, 14:31 | 664 | 664 µS/cm |
| 30 Mar 2026, 11:33 | 672 | 672 µS/cm |
| 18 Feb 2026, 11:45 | 652 | 652 µS/cm |
| 19 Jan 2026, 12:16 | 653 | 653 µS/cm |
| 29 Dec 2025, 11:14 | 650 | 650 µS/cm |
| 13 Jun 2025, 11:34 | 627 | 627 µS/cm |
| 20 May 2025, 09:39 | 635 | 635 µS/cm |
| 16 Apr 2025, 16:11 | 661 | 661 µS/cm |
Everything measured here
8 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 8 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 10 | Apr 2025 – Jun 2026 | 43% 24 Jun 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 10 | Apr 2025 – Jun 2026 | 4.46 mg/l 24 Jun 2026 |
| Temperature of Water 0076 | River water | 10 | Apr 2025 – Jun 2026 | 13.6 °C 24 Jun 2026 |
| pH 0061 | River water | 10 | Apr 2025 – Jun 2026 | 7.24 24 Jun 2026 |
| Conductivity at 25 C 0077 | River water | 10 | Apr 2025 – Jun 2026 | 644 µS/cm 24 Jun 2026 |
| Flow Type 2896 | River water | 17 | Apr 2025 – Aug 2026 | Dry 21 Aug 2026 |
| No flow /No sample 7668 | River water | 7 | Jul 2025 – Aug 2026 | No flow/discharge at sampling point 21 Aug 2026 |
| Photo Taken: Yes/No (1/0) 3257 | River water | 10 | Apr 2025 – Jun 2026 | Yes 24 Jun 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.