A Flood Alert was issued for Tidal Fal Estuary in Cornwall on 26th October 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 3.08m, peaking at 2.62m, while the Carnon River at Bissoe climbed 0.47m.
Environment Agency advice issued
High tides this afternoon may lead to flooding. Flooding is possible 2 hours either side of high tide on Monday afternoon. 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 Monday 26th October is at 17:00, times of high water will vary along the coast. Forecast total high tide level is 2.65mAOD. Expect tide levels along the coast to be between 0.30 and 0.40 metres above tide table level. Storm force 6 South Westerly winds and offshore wav
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Truro Harbour | South Cornwall Coast | +3.08m | 2.62m |
| Bissoe | Carnon River | +0.47m | 0.84m |
| Trenear | River Cober | +0.23m | 0.67m |
| Boscadjack | River Cober | +0.22m | 0.62m |
| Truro | River Kenwyn | +0.11m | 0.33m |
| Idless Dam | River Allen | +0.10m | 0.20m |
| Bolingey Cocks Bridge | Bolingey Stream | +0.09m | 0.35m |
| Ponsanooth | River Kennall | +0.07m | 0.19m |
| Rose in Vale | Perrancombe Stream | +0.06m | 0.38m |