A Flood Alert was issued for Tidal Fal Estuary in Cornwall on 30th September 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 3.16m, peaking at 2.68m, while the River Kenwyn at Truro climbed 0.20m.
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 |
|---|---|---|---|
| Truro Harbour | South Cornwall Coast | +3.16m | 2.68m |
| Truro | River Kenwyn | +0.20m | 0.28m |
| Bissoe | Carnon River | +0.14m | 0.40m |
| Idless Dam | River Allen | +0.12m | 0.12m |
| Bolingey Cocks Bridge | Bolingey Stream | +0.10m | 0.30m |
| Ponsanooth | River Kennall | +0.08m | 0.13m |
| Boscadjack | River Cober | +0.08m | 0.36m |
| Trenear | River Cober | +0.07m | 0.43m |
| Penryn Trelawney Park | Praze Stream | +0.06m | -13.02m |