A Flood Alert was issued for Groundwater flooding in the Lambourn Valley catchment in Oxfordshire, West Berkshire on 24th March 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The Groundwater Level at Draycot Foliat rose 0.43m, peaking at 157.23m, while the Groundwater Level at Water Acre climbed 0.30m.
Environment Agency advice issued
High groundwater levels may lead to flooding. Flooding is possible. Groundwater levels are falling very slowly at our Longacre borehole in the Lambourne Valley. We expect levels to remain high over the next few weeks and levels will remain sensitive to further sustained rainfall. Due to the nature of groundwater flooding, this situation could continue for several weeks or longer. We are closely monitoring rainfall and groundwater levels. Residents are advised to consider property resilience measures and ensure that pumps are working where they have been installed. Take particular care when dri
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Draycot Foliat | Groundwater Level | +0.43m | 157.23m |
| Water Acre | Groundwater Level | +0.30m | 142.84m |
| Hazelberry Plantation | Groundwater Level | +0.25m | 125.24m |
| Longacre | Groundwater Level | +0.19m | 143.09m |
| Eastbury Flood Control Structure | River Lambourn | +0.09m | 1.13m |