River Tone at Priory Bridge
EA name: RIVER TONE AT PRIORY BR (also listed as “R TONE PRIORY BR”)
Environment Agency sampling point SW-E1006800 · 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
- 6 Jan 2026, 09:3810 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 25 Oct 2026 and had nothing newer.
- Samples banked
- 9 since 18 Jan 2024 Imported periods: 1 Oct 2023 – 25 Oct 2026. Samples outside them are not shown here.
- Latest sample
- River / running surface water Monitoring (national agency policy)
- Where
- National Grid 322900, 125100As published, to the nearest 100 m (so up to about 70 m out). Open in a map
- River, by its own name
- Tone
- River, by the map
- River TonePlaced on the river its name gives, 4 m from the line.
- Next gauge downstream
- Bathpool Outfall On the River Tone · 2.6 km along the riverBeside Taunton Market, TAUNTON MARKET: too close to say above or below.
- Nearest gauge upstream
- Bishops Hull On the River Tone · 3.1 km along the riverHalsewater On the Halse Water · 3.2 km along the river
- Why it was sampled
- Monitoring (national agency policy) (9 samples)
Main measurements, river water
Dissolved oxygen
% saturation · code 9901 · %
99%
Sampled 6 Jan 2026, 10 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jan 2026, 09:38 | 99 | 99% |
| 1 Oct 2025, 14:36 | 101.3 | 101.3% |
| 15 Jul 2025, 10:59 | 96.3 | 96.3% |
| 1 Apr 2025, 09:34 | 92.9 | 92.9% |
| 10 Jan 2025, 10:39 | 100.4 | 100.4% |
| 4 Dec 2024, 11:28 | 97.8 | 97.8% |
| 2 Jul 2024, 14:15 | 101.3 | 101.3% |
| 5 Apr 2024, 12:33 | 97 | 97% |
| 18 Jan 2024, 10:54 | 97.9 | 97.9% |
Dissolved oxygen
as O2 · code 9924 · mg/l
13.3 mg/l
Sampled 6 Jan 2026, 10 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jan 2026, 09:38 | 13.3 | 13.3 mg/l |
| 1 Oct 2025, 14:36 | 10.5 | 10.5 mg/l |
| 15 Jul 2025, 10:59 | 8.98 | 8.98 mg/l |
| 1 Apr 2025, 09:34 | 10.6 | 10.6 mg/l |
| 10 Jan 2025, 10:39 | 12.9 | 12.9 mg/l |
| 4 Dec 2024, 11:28 | 11.7 | 11.7 mg/l |
| 2 Jul 2024, 14:15 | 9.93 | 9.93 mg/l |
| 5 Apr 2024, 12:33 | 10.5 | 10.5 mg/l |
| 18 Jan 2024, 10:54 | 13.1 | 13.1 mg/l |
Water temperature
code 0076 · °C
3 °C
Sampled 6 Jan 2026, 10 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jan 2026, 09:38 | 3 | 3 °C |
| 1 Oct 2025, 14:36 | 13.6 | 13.6 °C |
| 15 Jul 2025, 10:59 | 18.6 | 18.6 °C |
| 1 Apr 2025, 09:34 | 9.4 | 9.4 °C |
| 10 Jan 2025, 10:39 | 4.6 | 4.6 °C |
| 4 Dec 2024, 11:28 | 7.7 | 7.7 °C |
| 2 Jul 2024, 14:15 | 16.2 | 16.2 °C |
| 5 Apr 2024, 12:33 | 11.7 | 11.7 °C |
| 18 Jan 2024, 10:54 | 3.3 | 3.3 °C |
pH
code 0061
8.31
Sampled 6 Jan 2026, 10 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jan 2026, 09:38 | 8.31 | 8.31 |
| 1 Oct 2025, 14:36 | 8.15 | 8.15 |
| 15 Jul 2025, 10:59 | 7.98 | 7.98 |
| 1 Apr 2025, 09:34 | 8.28 | 8.28 |
| 10 Jan 2025, 10:39 | 8.17 | 8.17 |
| 4 Dec 2024, 11:28 | 8.16 | 8.16 |
| 2 Jul 2024, 14:15 | 8.4 | 8.4 |
| 5 Apr 2024, 12:33 | 7.92 | 7.92 |
| 18 Jan 2024, 10:54 | 8.3 | 8.3 |
Conductivity
at 25 °C · code 0077 · µS/cm
511 µS/cm
Sampled 6 Jan 2026, 10 months ago · 9 results banked
Every result (9)
| Sampled | Result as published | Reads as |
|---|---|---|
| 6 Jan 2026, 09:38 | 511 | 511 µS/cm |
| 1 Oct 2025, 14:36 | 573 | 573 µS/cm |
| 15 Jul 2025, 10:59 | 579 | 579 µS/cm |
| 1 Apr 2025, 09:34 | 539 | 539 µS/cm |
| 10 Jan 2025, 10:39 | 385 | 385 µS/cm |
| 4 Dec 2024, 11:28 | 406 | 406 µS/cm |
| 2 Jul 2024, 14:15 | 567 | 567 µS/cm |
| 5 Apr 2024, 12:33 | 304 | 304 µS/cm |
| 18 Jan 2024, 10:54 | 514 | 514 µS/cm |
Everything measured here
5 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 5 rows
| Determinand | Material | Results | First – last | Latest result |
|---|---|---|---|---|
| Oxygen, Dissolved, % Saturation 9901 | River water | 9 | Jan 2024 – Jan 2026 | 99% 6 Jan 2026 |
| Oxygen, Dissolved as O2 9924 | River water | 9 | Jan 2024 – Jan 2026 | 13.3 mg/l 6 Jan 2026 |
| Temperature of Water 0076 | River water | 9 | Jan 2024 – Jan 2026 | 3 °C 6 Jan 2026 |
| pH 0061 | River water | 9 | Jan 2024 – Jan 2026 | 8.31 6 Jan 2026 |
| Conductivity at 25 C 0077 | River water | 9 | Jan 2024 – Jan 2026 | 511 µS/cm 6 Jan 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.