A Flood Alert was issued for Tidal Fal Estuary in Cornwall on 29th August 2026. Affected watercourses included the South Cornwall Coast, Tidal Fal Estuary.
During this event, FloodRadar monitoring gauges recorded notable rises. The South Cornwall Coast at Truro Harbour rose 2.92m, peaking at 2.44m, while the Carnon River at Bissoe climbed 0.14m.
Environment Agency advice issued
High tides on Sunday may lead to flooding. Flooding is possible 2 hours either side of high tide on Sunday evening 30th August. Areas particularly at risk include low lying areas in Falmouth, Penryn, Flushing, Mylor Bridge, the A39 at Perranarworthal, Devoran, Calenick, Truro and the A390 at Tresillian. The high tide at Falmouth on Sunday is at 19:26, times of high water will vary along the coast. Forecast total high tide level is 2.7mAOD. Expect tide levels along the coast to be between 0.2 and 0.3 metres above tide table level. Force 6 SW winds and offshore wave heights of over 2m are fore
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Truro Harbour | South Cornwall Coast | +2.92m | 2.44m |
| Bissoe | Carnon River | +0.14m | 0.39m |
| Truro | River Kenwyn | +0.13m | 0.21m |
| Boscadjack | River Cober | +0.08m | 0.35m |
| Penryn Trelawney Park | Praze Stream | +0.07m | -13.00m |
| Idless Dam | River Allen | +0.07m | 0.09m |
| Trenear | River Cober | +0.06m | 0.42m |