River Clyst at A38 Bridge Broadclyst

EA name: RIVER CLYST AT A38 BRIDGE BROADCLYST
Environment Agency sampling point SW-70522649 · 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
9 Sep 2026, 15:2629 days ago · time as the Environment Agency records it (UK clock time; the source gives no time zone)
Samples banked
6 since 20 Apr 2026 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 16 Sep 2026
Where
National Grid 298393, 97566As published, to the nearest 1 m. Open in a map
River, by its own name
Clyst
River, by the map
River ClystPlaced on the river its name gives, 1 m from the line.
Next gauge downstream
WITHY BRIDGE 2.8 km along the riverWithy Bridge On the River Clyst · 2.8 km along the river
Nearest gauge upstream
Ashclyst On the River Clyst · 3.7 km along the river
Why it was sampled
Environmental monitoring statutory (EU directives) (6 samples)

Results here were completed a median of 5 days after the sample was taken (3 to 7 days, 4 samples).

Main measurements, river water

Dissolved oxygen

% saturation · code 9901 · %

39.5%

Sampled 9 Sep 2026, 29 days ago · 6 results banked

20406080100%20242025202620 Apr 2026, 12:17: 88.1%5 May 2026, 14:18: 79.8%15 Jun 2026, 11:35: 64.5%16 Jul 2026, 10:54: 37.4%14 Aug 2026, 14:46: 34.4%9 Sep 2026, 15:26: 39.5%
Every result (6)
SampledResult as publishedReads as
9 Sep 2026, 15:2639.5 39.5%
14 Aug 2026, 14:4634.4 34.4%
16 Jul 2026, 10:5437.4 37.4%
15 Jun 2026, 11:3564.5 64.5%
5 May 2026, 14:1879.8 79.8%
20 Apr 2026, 12:1788.1 88.1%

Dissolved oxygen

as O2 · code 9924 · mg/l

3.99 mg/l

Sampled 9 Sep 2026, 29 days ago · 6 results banked

246810mg/l20242025202620 Apr 2026, 12:17: 9.83 mg/l5 May 2026, 14:18: 8.31 mg/l15 Jun 2026, 11:35: 6.52 mg/l16 Jul 2026, 10:54: 3.55 mg/l14 Aug 2026, 14:46: 3.23 mg/l9 Sep 2026, 15:26: 3.99 mg/l
Every result (6)
SampledResult as publishedReads as
9 Sep 2026, 15:263.99 3.99 mg/l
14 Aug 2026, 14:463.23 3.23 mg/l
16 Jul 2026, 10:543.55 3.55 mg/l
15 Jun 2026, 11:356.52 6.52 mg/l
5 May 2026, 14:188.31 8.31 mg/l
20 Apr 2026, 12:179.83 9.83 mg/l

Water temperature

code 0076 · °C

14.8 °C

Sampled 9 Sep 2026, 29 days ago · 6 results banked

101214161820°C20242025202620 Apr 2026, 12:17: 10.4 °C5 May 2026, 14:18: 13.4 °C15 Jun 2026, 11:35: 14.8 °C16 Jul 2026, 10:54: 17.8 °C14 Aug 2026, 14:46: 18.2 °C9 Sep 2026, 15:26: 14.8 °C
Every result (6)
SampledResult as publishedReads as
9 Sep 2026, 15:2614.8 14.8 °C
14 Aug 2026, 14:4618.2 18.2 °C
16 Jul 2026, 10:5417.8 17.8 °C
15 Jun 2026, 11:3514.8 14.8 °C
5 May 2026, 14:1813.4 13.4 °C
20 Apr 2026, 12:1710.4 10.4 °C

pH

code 0061

7.49

Sampled 9 Sep 2026, 29 days ago · 6 results banked

7.27.47.67.8820242025202620 Apr 2026, 12:17: 7.845 May 2026, 14:18: 7.7115 Jun 2026, 11:35: 7.5516 Jul 2026, 10:54: 7.4214 Aug 2026, 14:46: 7.249 Sep 2026, 15:26: 7.49
Every result (6)
SampledResult as publishedReads as
9 Sep 2026, 15:267.49 7.49
14 Aug 2026, 14:467.24 7.24
16 Jul 2026, 10:547.42 7.42
15 Jun 2026, 11:357.55 7.55
5 May 2026, 14:187.71 7.71
20 Apr 2026, 12:177.84 7.84

Ammonia

ammoniacal nitrogen as N · code 0111 · mg/l

0.06 mg/l

Sampled 9 Sep 2026, 29 days ago · 6 results banked

0.020.040.060.080.1mg/l20242025202620 Apr 2026, 12:17: below 0.03 mg/l (not detected above this)5 May 2026, 14:18: 0.085 mg/l15 Jun 2026, 11:35: 0.073 mg/l16 Jul 2026, 10:54: 0.04 mg/l14 Aug 2026, 14:46: 0.044 mg/l9 Sep 2026, 15:26: 0.06 mg/l
Every result (6)
SampledResult as publishedReads as
9 Sep 2026, 15:260.06 0.06 mg/l
14 Aug 2026, 14:460.044 0.044 mg/l
16 Jul 2026, 10:540.04 0.04 mg/l
15 Jun 2026, 11:350.073 0.073 mg/l
5 May 2026, 14:180.085 0.085 mg/l
20 Apr 2026, 12:17<0.03 below 0.03 mg/l (not detected above this)

Nitrate

as nitrogen (N) · code 0117 · mg/l

3.55 mg/l

Sampled 9 Sep 2026, 29 days ago · 6 results banked

3456mg/l20242025202620 Apr 2026, 12:17: 4.28 mg/l5 May 2026, 14:18: 4.36 mg/l15 Jun 2026, 11:35: 3.96 mg/l16 Jul 2026, 10:54: 5.84 mg/l14 Aug 2026, 14:46: 5.63 mg/l9 Sep 2026, 15:26: 3.55 mg/l
Every result (6)
SampledResult as publishedReads as
9 Sep 2026, 15:263.55 3.55 mg/l
14 Aug 2026, 14:465.63 5.63 mg/l
16 Jul 2026, 10:545.84 5.84 mg/l
15 Jun 2026, 11:353.96 3.96 mg/l
5 May 2026, 14:184.36 4.36 mg/l
20 Apr 2026, 12:174.28 4.28 mg/l

Phosphate

orthophosphate, reactive, as P · code 0180 · mg/l

0.43 mg/l

Sampled 9 Sep 2026, 29 days ago · 6 results banked

0.10.20.30.40.5mg/l20242025202620 Apr 2026, 12:17: 0.19 mg/l5 May 2026, 14:18: 0.25 mg/l15 Jun 2026, 11:35: 0.38 mg/l16 Jul 2026, 10:54: 0.28 mg/l14 Aug 2026, 14:46: 0.24 mg/l9 Sep 2026, 15:26: 0.43 mg/l
Every result (6)
SampledResult as publishedReads as
9 Sep 2026, 15:260.43 0.43 mg/l
14 Aug 2026, 14:460.24 0.24 mg/l
16 Jul 2026, 10:540.28 0.28 mg/l
15 Jun 2026, 11:350.38 0.38 mg/l
5 May 2026, 14:180.25 0.25 mg/l
20 Apr 2026, 12:170.19 0.19 mg/l

Conductivity

at 25 °C · code 0077 · µS/cm

597 µS/cm

Sampled 9 Sep 2026, 29 days ago · 6 results banked

580600620640µS/cm20242025202620 Apr 2026, 12:17: 624 µS/cm5 May 2026, 14:18: 612 µS/cm15 Jun 2026, 11:35: 602 µS/cm16 Jul 2026, 10:54: 629 µS/cm14 Aug 2026, 14:46: 638 µS/cm9 Sep 2026, 15:26: 597 µS/cm
Every result (6)
SampledResult as publishedReads as
9 Sep 2026, 15:26597 597 µS/cm
14 Aug 2026, 14:46638 638 µS/cm
16 Jul 2026, 10:54629 629 µS/cm
15 Jun 2026, 11:35602 602 µS/cm
5 May 2026, 14:18612 612 µS/cm
20 Apr 2026, 12:17624 624 µS/cm

Everything measured here

12 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 12 rows
DeterminandMaterialResults First – lastLatest result
Oxygen, Dissolved, % Saturation 9901 River water 6 Apr 2026 – Sep 2026 39.5% 9 Sep 2026
Oxygen, Dissolved as O2 9924 River water 6 Apr 2026 – Sep 2026 3.99 mg/l 9 Sep 2026
Temperature of Water 0076 River water 6 Apr 2026 – Sep 2026 14.8 °C 9 Sep 2026
pH 0061 River water 6 Apr 2026 – Sep 2026 7.49 9 Sep 2026
Ammoniacal Nitrogen as N 0111 River water 6 Apr 2026 – Sep 2026 0.06 mg/l 9 Sep 2026
Nitrate as N 0117 River water 6 Apr 2026 – Sep 2026 3.55 mg/l 9 Sep 2026
Orthophosphate, reactive as P 0180 River water 6 Apr 2026 – Sep 2026 0.43 mg/l 9 Sep 2026
Conductivity at 25 C 0077 River water 6 Apr 2026 – Sep 2026 597 µS/cm 9 Sep 2026
Alkalinity to pH 4.5 as CaCO3 0162 River water 6 Apr 2026 – Sep 2026 230 mg/l 9 Sep 2026
Ammonia un-ionised as N 0119 River water 6 Apr 2026 – Sep 2026 0.00049 mg/l 9 Sep 2026
Nitrite as N 0118 River water 6 Apr 2026 – Sep 2026 0.054 mg/l 9 Sep 2026
Nitrogen, Total Oxidised as N 0116 River water 6 Apr 2026 – Sep 2026 3.6 mg/l 9 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.