A Flood Alert was issued for Dorset coast at Poole Harbour in Bournemouth, Christchurch and Poole, Dorset Council on 25th October 2026. Affected watercourses included the English Channel.
During this event, FloodRadar monitoring gauges recorded notable rises. The Dorset Coast at Poole Harbour rose 1.97m, peaking at 1.18m, while the Swan Brook at Swanage Prospect Farm Swan Brook climbed 0.35m.
Environment Agency advice issued
High tides tomorrow may lead to flooding. Flooding is possible from 06:51am to 10:51am and 07:11pm to 11:11pm on 26/10/2026 Areas most at risk include Poole Harbour and tidal stretches of the Lower Frome and River Piddle. The detailed tidal forecast for those who use it is for a peak level at Poole RNLI. The first forecast high water of 1.39mAODN is at 08:51am with southerly force 6 winds. The second forecast high water is at 09:11pm with a level of 1.54mAODN with south westerly force 6 winds. Further flooding is possible on Tuesday 26th October morning's high tide with forecast high water a
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Poole Harbour | Dorset Coast | +1.97m | 1.18m |
| Swanage Prospect Farm Swan Brook | Swan Brook | +0.35m | 0.74m |
| East Stoke | River Frome | +0.24m | 1.02m |
| Swanage King Georges Field St Marys Church | Swan Brook | +0.07m | 0.04m |