A Flood Alert was issued for Mersey Estuary at Warrington in Halton, Warrington between 26th and 28th October 2026. Affected watercourses included the Mersey Estuary.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Mersey at Fiddlers Ferry rose 3.88m, peaking at 6.26m, while the Sankey Brook at Causey Bridge climbed 2.33m.
Environment Agency advice issued
There is no longer a threat of flooding. 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.
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Fiddlers Ferry | River Mersey | +3.88m | 6.26m |
| Causey Bridge | Sankey Brook | +2.33m | 2.73m |
| Higham Avenue | Sankey Brook | +2.30m | 2.89m |
| Liverpool Road | Sankey Brook | +1.82m | 3.46m |
| Westy | River Mersey | +0.75m | 4.63m |
| Ellamsbridge Road, St Helens | Sutton Mill Brook | +0.70m | 0.85m |
| Ferry Lane, Warrington | Manchester ship canal | +0.64m | 0.96m |
| Pickerings Cut | River Weaver | +0.38m | 5.15m |
| Acton Bridge | River Weaver | +0.18m | 2.81m |
| Morris Brook | Morris Brook | +0.11m | 0.18m |