A Flood Alert was issued for Upper River Mole, Ifield Brook, Gatwick Stream and Burstow Stream in Surrey, West Sussex on 23rd October 2026. Affected watercourses included the Ifield Brook, River Mole, Gatwick Stream, Burstow Stream.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Mole at Kinnersley Manor rose 1.46m, peaking at 1.65m, while the River Mole at Horley climbed 1.29m.
Environment Agency advice issued
There is no longer a threat of flooding. Further rainfall is forecast but 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.
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Kinnersley Manor | River Mole | +1.46m | 1.65m |
| Horley | River Mole | +1.29m | 1.68m |
| Gatwick Airport | River Mole | +1.11m | 1.11m |
| Bonehurst Bridge | Burstow Stream | +0.84m | 2.69m |
| Maidenbower | Gatwick Stream | +0.72m | 1.41m |
| Ifield | Ifield Brook | +0.69m | 1.50m |
| Stafford Bridge | River Mole | +0.65m | 1.31m |
| Three Bridges | Gatwick Stream | +0.63m | 1.13m |
| Peeks Brook Lane | Burstow Stream | +0.52m | 1.59m |
| Gatwick Link | Gatwick Stream | +0.46m | 0.54m |