A Flood Alert was issued for River Bollin catchment, including Knutsford, Wilmslow, Macclesfield and Bollington in Cheshire East, Manchester, Stockport, Trafford, Warrington on 4th September 2026. Affected watercourses included the River Bollin.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Mersey at Didsbury River rose 0.90m, peaking at 3.52m, while the River Bollin at Prestbury climbed 0.70m.
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 |
|---|---|---|---|
| Didsbury River | River Mersey | +0.90m | 3.52m |
| Prestbury | River Bollin | +0.70m | 0.99m |
| Partington | Sinderland Brook | +0.67m | 0.80m |
| Wilmslow | River Bollin | +0.56m | 0.70m |
| Ashton Weir | River Mersey | +0.54m | 0.87m |
| Bollington Mill | River Bollin | +0.33m | 0.59m |
| Northenden | River Mersey | +0.32m | 0.58m |
| Northern Moor | Baguley Brook | +0.22m | 0.41m |
| Stanneylands | Dean | +0.16m | 0.67m |
| Old Mill Lane | River Bollin | +0.11m | 0.22m |