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Home › Rivers › River Clyst

River Clyst water levels

Live levels from 3 monitoring stations across Devon, updated every 15 minutes.

3stations
0above typical high

Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
AshclystAshclyst0.13 mASD 32m agoNormal—
6.6 km by river
Withy BridgeBroadclyst0.09 mASD 32m agoLow—
2.7 km by river
Clyst HonitonClyst Honiton0.61 mASD 32m agoLow—

Stations are listed from source to mouth as the water flows, traced on the river map (OS Open Rivers) and the Environment Agency’s own links between its gauges. A distance “by river” is along the river, and is shown only where the map traces the path.

Contains OS data © Crown copyright and database rights 2026.

Gauged tributaries

Streams and rivers with a gauge whose water joins the Clyst above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.

1 gauged tributary, 1 gauge

Ford Stream

Joins the Clyst between Withy Bridge and Clyst Honiton, no more than 5.7 km by river above Clyst Honiton.

Rockbeare Bridge0.41 m 1h agoLow

Its water passes Clyst Honiton and every gauge below it on the Clyst. It does not pass Withy Bridge or the gauges above it.

Where the Clyst goes

No gauge below Clyst Honiton is known on the river map.

Tributaries and where they join are traced on the river map (OS Open Rivers, edition 2026-04) and the Environment Agency’s links between its gauges. The map holds distances between gauges, not the junctions themselves, so a junction is placed between two gauges, and no further up than the tributary’s own lowest gauge. Contains OS data © Crown copyright and database rights 2026.

Streams without a gauge

Named streams on the river map that flow into the Clyst and have no gauge of their own. Each has a page with what is known about it: the next gauge downstream, and any storm overflows or water-sampling points placed on it.

Storm overflows upstream

4 storm overflows are traced upstream of Clyst Honiton, the Clyst’s lowest gauge on the river map: on the Clyst itself, on its gauged tributaries, and on smaller streams that join above there.

  • 0 report discharging now
  • 4 not discharging
  • 0 offline or silent: 0 monitor offline, 0 status unknown, 0 no live feed

Official figures for 2025, for the overflows traced upstream of Clyst Honiton: 47 spills over 58 hours in total, across all 4.

Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of the Clyst includes the smaller streams that join it there.

Between Ashclyst and Withy Bridge1 overflow
  • Broadclyst (Side) Pumping Station Not discharging shellfish water
    South West Water · into River Clyst Valley Via Sws · 2.9 km by river above Withy Bridge · 2025: 17 spills, 16 h · reaches the river through a sewer, so where it enters is approximate
Between Withy Bridge and Clyst Honiton3 overflows
  • Church Road CSO Not discharging shellfish water
    South West Water · into Cranny Brook · 9.7 km by river above Clyst Honiton · 2025: 5 spills, 22 h
  • Monkerton Pumping Station Not discharging
    South West Water · into Pin Brook · 2.9 km by river above Clyst Honiton · 2025: 0 spills, 0 h
  • Langaton Lane CSO Not discharging shellfish water
    South West Water · into Pin Brook · 2.2 km by river above Clyst Honiton · 2025: 25 spills, 20 h

Near these gauges, connection not known

Within 3 km of one of the Clyst’s gauges in a straight line, but the river map cannot say whether their water reaches it.

  • Clyst Honiton Pumping Station Not discharging shellfish water
    South West Water · into River Clyst · 80 m from Clyst Honiton in a straight line · too close to Clyst Honiton to say which side · 2025: 23 spills, 269 h
  • Moor Lane Pscso/EO Not discharging
    South West Water · into Stream (S) · 1.7 km from Withy Bridge in a straight line · its watercourse is not on the river map · 2025: 1 spill, 0.1 h

A status is the water company’s own monitor: it says whether an overflow is discharging, never how much or why, and a spill does not by itself explain a change in a river level. A status older than two hours is shown as unknown. Annual figures are the official returns: 12/24-hour spills for England and Wales, overflow events for Scotland (Scottish Water counts differently, so the two cannot be compared). “No data” means the monitor produced no usable data that year, not zero. Overflows are placed on OS Open Rivers (edition 2026-04), which leaves out many small channels: an overflow the map cannot place may still drain here. Contains OS data © Crown copyright and database rights 2026. Sewage in Britain’s rivers →

Live status: © South West Water storm overflow activity data, licensed under CC BY 4.0. Annual figures for England: Environment Agency Event Duration Monitoring return, © Environment Agency copyright and/or database right, Open Government Licence v3.0.

Water samples

Dated samples taken by the Environment Agency, not live readings. Results are published days to months after the sample is taken, and many points are sampled only a few times a year, or have not been sampled for years.

28 sampling points on the River Clyst and the streams that join it above Clyst Honiton, and below it. 5 have a sample from the last 12 months; 7 have any sample banked. Listed from the source down, grouped by the next gauge each one's water reaches.

Above Ashclyst River Clyst 16 points, 1 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Aunk Stream at Pyle Bridgeunnamed stream8.1 kmLast sampled 28 Jan 2005, before the imported period
Plymtree Stream West tributaryunnamed stream7.7 kmLast sampled 28 Jan 2005, before the imported period
Plymtree Stream East tributaryunnamed stream7.7 kmLast sampled 28 Jan 2005, before the imported period
Plymtree Stream downstream of Tribsunnamed stream7.6 kmLast sampled 28 Jan 2005, before the imported period
Plymtree Stream upstream of Twynhayes Farmunnamed stream7.1 kmLast sampled 28 Jan 2005, before the imported period
River Clyst downstream of Marsh FarmRiver Clyst7.0 kmLast sampled 28 Jan 2005, before the imported period
River Clyst Footbridge upstream of C. Hydon BridgeRiver Clyst6.7 kmLast sampled 28 Jan 2005, before the imported period
5 m upstream of Bridge Clyst HydonRiver Clyst6.6 kmLast sampled 14 Dec 2018, before the imported period
River Clyst at Clyst HydonRiver Clyst6.5 kmLast sampled 3 Dec 2004, before the imported period
River Clyst at Yarde FarmRiver Clyst5.9 kmLast sampled 28 Jan 2005, before the imported period
River Clyst Great Barton Farm tributaryunnamed stream4.3 kmLast sampled 28 Jan 2005, before the imported period
River Clyst at Clyst St LawrenceRiver Clyst4.0 kmLast sampled 14 Dec 2018, before the imported period
Ashclyst Forest Stream at Scotch Fir Avunnamed stream2.7 km4 Dec 2024 · 22 months agoOxygen 95.1%Temp 8.4 °CpH 7.52Ammonia below 0.002 mg/l
Westwood Stream at Clapp Mill Farmunnamed stream2.3 kmLast sampled 28 Jan 2005, before the imported period
River Clyst at Stooke BridgeRiver Clyst2.0 kmLast sampled 28 Jan 2005, before the imported period
River Clyst at HarepathsteadRiver Clyst1.1 kmLast sampled 28 Jan 2005, before the imported period
Above WITHY BRIDGE 5 points, 2 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
River Clyst at Ashclyst FarmRiver Clyst6.6 kmLast sampled 13 Dec 2018, before the imported period
River Clyst at Newlands FarmRiver Clyst5.4 kmLast sampled 28 Jan 2005, before the imported period
Cutton Stream at Broadclyst Moorunnamed stream4.0 km4 Dec 2024 · 22 months agoOxygen 63.6%Temp 9.5 °CpH 7.58Ammonia 0.26 mg/l
River Clyst at Burrow BridgeRiver Clyst3.8 kmLast sampled 28 Jan 2005, before the imported period
River Clyst at A38 Bridge BroadclystRiver Clyst2.8 km9 Sep 2026 · 29 days agoOxygen 39.5%Temp 14.8 °CpH 7.49Ammonia 0.06 mg/l
Above Clyst Honiton River Clyst 6 points, 4 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Cranny Brook at BarnshayesCranny Brook9.3 kmLast sampled 5 Mar 2019, before the imported period
Cranny Brook at Crannaford CrossingCranny Brook5.4 km9 Sep 2026 · 29 days agoOxygen 75.1%Temp 14.8 °CpH 7.84Ammonia below 0.03 mg/l
Ford Stream at A30 BridgeFord Stream4.6 km9 Sep 2026 · 29 days agoOxygen 83.6%Temp 15.4 °CpH 7.9Ammonia below 0.03 mg/l
River Clyst at Withy BridgeRiver Clyst2.6 km14 Sep 2026 · 24 days agoOxygen 66.3%Temp 16.1 °CAmmonia below 0.03 mg/lNitrate 9.09 mg/l
Cranny Brook at Wishford FarmCranny Brook2.1 km9 Sep 2026 · 29 days agoOxygen 77.8%Temp 15.2 °CpH 7.66Ammonia below 0.03 mg/l
River Clyst at A30 Bridge Clyst HonitonRiver Clyst0.1 kmLast sampled 28 Oct 2015, before the imported period
Below Clyst Honiton 1 point, 0 with samples
Sampling pointWatercourse (map)Below the gaugeLast sampleLatest results (river water)
River Clyst at Clyst St MaryRiver Clyst3.9 kmLast sampled 1 Feb 2017, before the imported period

Distances are along the river to the gauge named. England's samples only.

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.

Wave tracker for this river → Devon rivers → All UK rivers