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

92.59597.5100102.5%20242025202618 Jan 2024, 10:54: 97.9%5 Apr 2024, 12:33: 97%2 Jul 2024, 14:15: 101.3%4 Dec 2024, 11:28: 97.8%10 Jan 2025, 10:39: 100.4%1 Apr 2025, 09:34: 92.9%15 Jul 2025, 10:59: 96.3%1 Oct 2025, 14:36: 101.3%6 Jan 2026, 09:38: 99%
Every result (9)
SampledResult as publishedReads as
6 Jan 2026, 09:3899 99%
1 Oct 2025, 14:36101.3 101.3%
15 Jul 2025, 10:5996.3 96.3%
1 Apr 2025, 09:3492.9 92.9%
10 Jan 2025, 10:39100.4 100.4%
4 Dec 2024, 11:2897.8 97.8%
2 Jul 2024, 14:15101.3 101.3%
5 Apr 2024, 12:3397 97%
18 Jan 2024, 10:5497.9 97.9%

Dissolved oxygen

as O2 · code 9924 · mg/l

13.3 mg/l

Sampled 6 Jan 2026, 10 months ago · 9 results banked

8101214mg/l20242025202618 Jan 2024, 10:54: 13.1 mg/l5 Apr 2024, 12:33: 10.5 mg/l2 Jul 2024, 14:15: 9.93 mg/l4 Dec 2024, 11:28: 11.7 mg/l10 Jan 2025, 10:39: 12.9 mg/l1 Apr 2025, 09:34: 10.6 mg/l15 Jul 2025, 10:59: 8.98 mg/l1 Oct 2025, 14:36: 10.5 mg/l6 Jan 2026, 09:38: 13.3 mg/l
Every result (9)
SampledResult as publishedReads as
6 Jan 2026, 09:3813.3 13.3 mg/l
1 Oct 2025, 14:3610.5 10.5 mg/l
15 Jul 2025, 10:598.98 8.98 mg/l
1 Apr 2025, 09:3410.6 10.6 mg/l
10 Jan 2025, 10:3912.9 12.9 mg/l
4 Dec 2024, 11:2811.7 11.7 mg/l
2 Jul 2024, 14:159.93 9.93 mg/l
5 Apr 2024, 12:3310.5 10.5 mg/l
18 Jan 2024, 10:5413.1 13.1 mg/l

Water temperature

code 0076 · °C

3 °C

Sampled 6 Jan 2026, 10 months ago · 9 results banked

05101520°C20242025202618 Jan 2024, 10:54: 3.3 °C5 Apr 2024, 12:33: 11.7 °C2 Jul 2024, 14:15: 16.2 °C4 Dec 2024, 11:28: 7.7 °C10 Jan 2025, 10:39: 4.6 °C1 Apr 2025, 09:34: 9.4 °C15 Jul 2025, 10:59: 18.6 °C1 Oct 2025, 14:36: 13.6 °C6 Jan 2026, 09:38: 3 °C
Every result (9)
SampledResult as publishedReads as
6 Jan 2026, 09:383 3 °C
1 Oct 2025, 14:3613.6 13.6 °C
15 Jul 2025, 10:5918.6 18.6 °C
1 Apr 2025, 09:349.4 9.4 °C
10 Jan 2025, 10:394.6 4.6 °C
4 Dec 2024, 11:287.7 7.7 °C
2 Jul 2024, 14:1516.2 16.2 °C
5 Apr 2024, 12:3311.7 11.7 °C
18 Jan 2024, 10:543.3 3.3 °C

pH

code 0061

8.31

Sampled 6 Jan 2026, 10 months ago · 9 results banked

7.888.28.420242025202618 Jan 2024, 10:54: 8.35 Apr 2024, 12:33: 7.922 Jul 2024, 14:15: 8.44 Dec 2024, 11:28: 8.1610 Jan 2025, 10:39: 8.171 Apr 2025, 09:34: 8.2815 Jul 2025, 10:59: 7.981 Oct 2025, 14:36: 8.156 Jan 2026, 09:38: 8.31
Every result (9)
SampledResult as publishedReads as
6 Jan 2026, 09:388.31 8.31
1 Oct 2025, 14:368.15 8.15
15 Jul 2025, 10:597.98 7.98
1 Apr 2025, 09:348.28 8.28
10 Jan 2025, 10:398.17 8.17
4 Dec 2024, 11:288.16 8.16
2 Jul 2024, 14:158.4 8.4
5 Apr 2024, 12:337.92 7.92
18 Jan 2024, 10:548.3 8.3

Conductivity

at 25 °C · code 0077 · µS/cm

511 µS/cm

Sampled 6 Jan 2026, 10 months ago · 9 results banked

300400500600µS/cm20242025202618 Jan 2024, 10:54: 514 µS/cm5 Apr 2024, 12:33: 304 µS/cm2 Jul 2024, 14:15: 567 µS/cm4 Dec 2024, 11:28: 406 µS/cm10 Jan 2025, 10:39: 385 µS/cm1 Apr 2025, 09:34: 539 µS/cm15 Jul 2025, 10:59: 579 µS/cm1 Oct 2025, 14:36: 573 µS/cm6 Jan 2026, 09:38: 511 µS/cm
Every result (9)
SampledResult as publishedReads as
6 Jan 2026, 09:38511 511 µS/cm
1 Oct 2025, 14:36573 573 µS/cm
15 Jul 2025, 10:59579 579 µS/cm
1 Apr 2025, 09:34539 539 µS/cm
10 Jan 2025, 10:39385 385 µS/cm
4 Dec 2024, 11:28406 406 µS/cm
2 Jul 2024, 14:15567 567 µS/cm
5 Apr 2024, 12:33304 304 µS/cm
18 Jan 2024, 10:54514 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
DeterminandMaterialResults First – lastLatest 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.