A Flood Alert was issued for Plymouth Sound, Wembury Bay and tidal estuaries in Cornwall, Devon, Plymouth on 30th September 2026. Affected watercourses included the South Cornwall Coast.
During this event, FloodRadar monitoring gauges recorded notable rises. The Long Brook at Plympton rose 0.61m, peaking at 0.79m, while the River Tavy at Ludbrook climbed 0.43m.
Environment Agency advice issued
There is no longer a threat of flooding, though standing water and debris may still remain. Coastal conditions are expected to improve and no flooding is expected. We will continue to monitor the situation and will issue further alerts or warnings if necessary. Continue to take care on waterside roads and footpaths and don't put yourself in unnecessary danger. Stay away from floodwater - it contains hidden dangers such as open manhole covers, sewage and chemicals.
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Plympton | Long Brook | +0.61m | 0.79m |
| Ludbrook | River Tavy | +0.43m | 0.56m |
| Carnwood | River Plym | +0.24m | 0.39m |
| Ermington | River Erme | +0.20m | 0.39m |
| Puslinch | River Yealm | +0.15m | 0.34m |
| Cornwood | River Yealm | +0.12m | 0.24m |
| Newnham Park | Tory Brook | +0.07m | 0.41m |