A Flood Alert was issued for Groundwater flooding in West Ilsley, East Ilsley, Compton, Chilton and West Hagbourne in West Berkshire on 26th February 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Thames at Goring Lock rose 4.12m, peaking at 4.21m, while the River Thames at Cleeve Lock climbed 2.69m.
Environment Agency advice issued
High groundwater levels may lead to flooding. Flooding is possible Groundwater levels are high at our Hodcot borehole affecting West Ilsley, East Ilsley, Compton, Chilton and West Hagbourne where flooding of low-lying areas roads is possible. The groundwater level is higher than normal for this time of year at this location and is continuing to rise. Due to the nature of groundwater flooding, this situation could continue for several weeks or longer. We are closely monitoring the situation . Take particular care when driving both for your own safety and to prevent flooding to others . Th
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Goring Lock | River Thames | +4.12m | 4.21m |
| Cleeve Lock | River Thames | +2.69m | 2.71m |
| Hodcott | Groundwater Level | +0.53m | 118.09m |
| Stonor Estate | Groundwater Level | +0.47m | 81.66m |
| Chapel Wood | Groundwater Level | +0.24m | 111.20m |
| Frilsham | River Pang | +0.20m | 0.29m |