A Flood Alert was issued for Groundwater flooding in West Ilsley, East Ilsley, Compton, Chilton and West Hagbourne in West Berkshire on 7th April 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The Groundwater Level at Water Acre rose 0.33m, peaking at 141.30m, while the Groundwater Level at Longacre climbed 0.26m.
Environment Agency advice issued
Continued high groundwater levels may lead to flooding. Flooding of low-lying areas and roads is possible. Groundwater levels are now at the point where properties may be impacted. Groundwater levels are falling very gradually at our Hodcot borehole affecting West Ilsley, East Ilsley, Compton, Chilton and West Hagbourne. The groundwater level remains higher than normal for this time of year. Due to the nature of groundwater flooding, this situation could continue for several weeks or longer. Residents are advised to consider property resilience measures and ensure that pumps are working where
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Water Acre | Groundwater Level | +0.33m | 141.30m |
| Longacre | Groundwater Level | +0.26m | 142.14m |
| Cleeve Lock | River Thames | +0.12m | 2.32m |
| Stonor Estate | Groundwater Level | +0.06m | 82.39m |