A Flood Alert was issued for Groundwater flooding in the Lambourn Valley catchment in Oxfordshire, West Berkshire between 8th and 10th March 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Lambourn at Eastbury Flood Control Structure rose 2.09m, peaking at 1.96m, while the Groundwater Level at Draycot Foliat climbed 0.97m.
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 prepare property resilience measures and ensure that pumps are working where they have been installed. Take particular care when driv
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Eastbury Flood Control Structure | River Lambourn | +2.09m | 1.96m |
| Draycot Foliat | Groundwater Level | +0.97m | 159.57m |
| Hazelberry Plantation | Groundwater Level | +0.34m | 126.44m |
| Water Acre | Groundwater Level | +0.22m | 143.80m |
| Chapel Wood | Groundwater Level | +0.18m | 111.73m |
| Longacre | Groundwater Level | +0.14m | 143.76m |