A Flood Alert was issued for Plymouth Sound, Wembury Bay and tidal estuaries in Cornwall, Devon, Plymouth on 29th 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 0.17m.
Environment Agency advice issued
High tides and forecast weather conditions over the next two days may lead to flooding. Flooding is possible 2 hours either side of high tide today, Tuesday evening and tomorrow, Wednesday morning. Areas particularly at risk including Cawsand, Kingsand, The Hoe, Millbrook, and low lying areas on the Tidal Lynher, Tamar, Tavy, Plym and Yealm estuaries. The forecast total high tide at Plymouth on Tuesday is 2.85m at 20:22 and on Wednesday the forecast total high tide is 2.66m at 08:40. Times of high water will vary along the coast. Expect tide levels along the coast to be between 0.42 and 0.47
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Plympton | Long Brook | +0.61m | 0.79m |
| Ludbrook | River Tavy | +0.17m | 0.31m |
| Ermington | River Erme | +0.17m | 0.37m |
| Puslinch | River Yealm | +0.14m | 0.33m |
| Cornwood | River Yealm | +0.07m | 0.18m |
| Carnwood | River Plym | +0.06m | 0.22m |
| Newnham Park | Tory Brook | +0.06m | 0.40m |