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Home › Rivers › River Plym

River Plym water levels

Live levels from 1 monitoring station across Devon, updated every 15 minutes.

1stations
0above typical high

Gauges

Monitoring stations, source to mouth

StationTownLevel nowStatusTrend
CarnwoodBickleigh0.17 m 1h agoNormal—

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 Plym above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.

No gauged tributary joins the Plym above Carnwood on the river map. Streams without a gauge are not counted here.

Where the Plym goes

No gauge below Carnwood 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 Plym 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

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

  • 0 report discharging now
  • 5 not discharging
  • 2 offline or silent: 0 monitor offline, 1 status unknown, 1 no live feed

Official figures for 2025, for the overflows traced upstream of Carnwood: 457 spills over 5,219 hours in total, across all 7.

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 Plym includes the smaller streams that join it there.

Above Carnwood, the Plym’s highest gauge7 overflows
  • Meavy Wastewater Treatment Works Not discharging
    South West Water · into River Meavy (S) · 9.8 km by river above Carnwood · 2025: 34 spills, 27 h
  • Lake Lane CSO Not discharging
    South West Water · into River Meavy (S) · 9.7 km by river above Carnwood · 2025: 46 spills, 276 h
  • Gratton CSO Not discharging
    South West Water · into River Meavy · 8.6 km by river above Carnwood · 2025: 167 spills, 2,124 h
  • Gratton Wastewater Treatment Works Not discharging
    South West Water · into River Meavy · 7.9 km by river above Carnwood · 2025: 143 spills, 2,485 h
  • #n/A Status unknown
    South West Water · into River Meavy · 7.9 km by river above Carnwood · 2025: 15 spills, 49 h
  • CSO Adj Glenview No live feed
    South West Water · into River Meavy (S) · 6.8 km by river above Carnwood · 2025: 26 spills, 88 h
  • Clearbrook STW Not discharging
    South West Water · into (S) Trib Of River Meavy · 6.3 km by river above Carnwood · 2025: 26 spills, 171 h

1 other overflow within 3 km of these gauges is placed below the Plym’s lowest gauge or on another river, so not listed.

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.

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

Above Carnwood River Plym 17 points, 11 with samples
Sampling pointWatercourse (map)Above the gaugeLast sampleLatest results (river water)
Narrator Brook at Narrator LakeNarrator Brook15 kmLast sampled 29 Aug 2013, before the imported period
River Meavy at Narrator BridgeRiver Meavy15 kmLast sampled 29 Aug 2013, before the imported period
River Meavy upstream of Burrator ReservoirRiver Meavy14 km7 Sep 2026 · 31 days agoOxygen 101%Temp 15 °CpH 6.88Ammonia below 0.03 mg/l
River Meavy at Burrator Reservoir SurfaceRiver Meavy12 km10 Aug 2026 · 59 days agoOxygen 112.3%pH 7.33Conductivity 52 µS/cm
River Meavy downstream of Burrator ReservoirRiver Meavy12 km7 Sep 2026 · 31 days agoOxygen 105.8%Temp 17.8 °CpH 7.11Conductivity 76 µS/cm
River Plym above DitsworthyRiver Plym12 kmLast sampled 1 Dec 2004, before the imported period
River Meavy at Gratton Ford BridgeRiver Meavy8.7 km7 Sep 2026 · 31 days agoOxygen 106.6%Temp 16.7 °CpH 7.07Conductivity 76 µS/cm
Blackabrook at River Plym confluenceBlacka Brook7.7 km23 Sep 2026 · 15 days agoOxygen 112.5%Temp 16.1 °CpH 6.06Ammonia below 0.03 mg/l
River Plym upstream of BlackabrookRiver Plym7.7 km7 Sep 2026 · 31 days agoOxygen 102.3%Temp 17.1 °CpH 6.71Ammonia below 0.03 mg/l
River Plym downstream of BlackabrookRiver Plym7.6 km7 Sep 2026 · 31 days agoOxygen 102.2%Temp 17.2 °CpH 6.84Ammonia below 0.03 mg/l
River Plym at Cadover BridgeRiver Plym6.6 kmLast sampled 13 Dec 2007, before the imported period
River Meavy at Hoo Meavy BridgeRiver Meavy6.5 km7 Sep 2026 · 31 days agoOxygen 93.5%Temp 16.1 °CpH 6.85Conductivity 87 µS/cm
River Plym downstream of Cadover BridgeRiver Plym6.5 km21 May 2026 · 5 months agoOxygen 103.2%Temp 15.2 °CpH 6.19Ammonia below 0.03 mg/l
River Plym at DunstoneRiver Plym6.4 km17 Aug 2026 · 52 days agoOxygen 104.8%Temp 20.8 °CpH 6.67Ammonia 0.0038 mg/l
River Plym at Shaugh Bridge (Wooden)River Plym3.9 km7 Sep 2026 · 31 days agoOxygen 101.1%Temp 17.3 °CpH 6.88Conductivity 51 µS/cm
River Meavy at ShaughRiver Meavy3.9 kmLast sampled 13 Dec 2021, before the imported period
River Plym at BickleighRiver Plym0.9 kmLast sampled 22 Aug 2013, before the imported period
Below Carnwood 1 point
Sampling pointWatercourse (map)Below the gaugeLast sampleLatest results (river water)
River Plym at Plym BridgeRiver Plym3.0 km17 Jul 2026 · 3 months agoOxygen 98.4%Temp 18.8 °CpH 7.45Ammonia below 0.03 mg/l

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