A Flood Alert was issued for River Alt, Formby to Huyton in Knowsley, Lancashire, Liverpool, Sefton on 3rd September 2026. Affected watercourses included the River Alt.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Douglas at Wanes Blades rose 0.96m, peaking at 1.25m, while the River Alt at Kirkby climbed 0.85m.
Environment Agency advice issued
High river levels overnight may lead to flooding. Flooding is possible from the evening of 03 September 2026 as rain will be heavy at times and persistent. Locations most affected will be low lying land and roads near rivers. We are closely monitoring the situation . Take care and avoid walking, cycling or driving through flood water . This message will be updated by 10:00AM on 04 September 2026 or as the situation changes.
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Wanes Blades | River Douglas | +0.96m | 1.25m |
| Kirkby | River Alt | +0.85m | 1.03m |
| Castle Bridge Croston | River Yarrow | +0.68m | 1.18m |
| Dovers Bridge | Dovers Brook | +0.61m | 1.42m |
| Davis Road | River Birket | +0.59m | 1.36m |
| Appley Bridge | River Douglas | +0.43m | 0.84m |
| Dyers lane | Sandy Brook | +0.23m | 0.26m |
| Parbold | River Douglas | +0.18m | 0.22m |
| Crossens Pumping Station | The Sluice | +0.14m | 1.62m |