A Flood Alert was issued for River Alt, Formby to Huyton in Knowsley, Lancashire, Liverpool, Sefton on 20th August 2026. Affected watercourses included the River Alt.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Douglas at Wanes Blades rose 1.56m, peaking at 2.06m, while the River Douglas at Parbold climbed 1.22m.
Environment Agency advice issued
Rising river levels today may lead to flooding. Flooding is possible on 20 August 2026 . Locations most affected will be low lying land and roads near rivers. We are closely monitoring the situation . Avoid using low lying footpaths and any bridges near local watercourses . This message will be updated by 1:00PM on 20 August 2026 or as the situation changes.
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Wanes Blades | River Douglas | +1.56m | 2.06m |
| Parbold | River Douglas | +1.22m | 1.31m |
| Castle Bridge Croston | River Yarrow | +1.08m | 1.62m |
| Dovers Bridge | Dovers Brook | +1.07m | 1.78m |
| Davis Road | River Birket | +1.04m | 1.82m |
| Kirkby | River Alt | +0.89m | 1.14m |
| Appley Bridge | River Douglas | +0.74m | 1.12m |
| Crossens Pumping Station | The Sluice | +0.56m | 1.59m |
| Dyers lane | Sandy Brook | +0.37m | 0.39m |