A Flood Alert was issued for River Sankey catchment with St Helens and Warrington in Lancashire, St. Helens, Warrington, Wigan on 4th September 2026. Affected watercourses included the River Sankey.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Mersey at Fiddlers Ferry rose 2.85m, peaking at 4.95m, while the Sankey Brook at Higham Avenue climbed 1.52m.
Environment Agency advice issued
The flood forecast has changed significantly. As a result, there is no longer a risk of flooding in the area. Weather conditions are expected to improve and no further 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 |
|---|---|---|---|
| Fiddlers Ferry | River Mersey | +2.85m | 4.95m |
| Higham Avenue | Sankey Brook | +1.52m | 1.80m |
| Lincoln Drive | Millingford Brook | +1.40m | 1.66m |
| Causey Bridge | Sankey Brook | +1.32m | 1.53m |
| Liverpool Road | Sankey Brook | +0.95m | 2.39m |
| Westy | River Mersey | +0.70m | 4.22m |
| Ellamsbridge Road, St Helens | Sutton Mill Brook | +0.63m | 0.69m |
| Ferry Lane, Warrington | Manchester ship canal | +0.57m | 0.83m |
| Haydock West End Road | Black Brook | +0.40m | 0.48m |
| Ivy Street, Ashton-In-Makerfield | Millingford Brook | +0.36m | 0.58m |