A Flood Alert was issued for Groundwater flooding in the Upper Aldbourne Valley in Wiltshire on 21st March 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The Groundwater Level at Draycot Foliat rose 0.47m, peaking at 157.71m, while the Groundwater Level at Water Acre climbed 0.26m.
Environment Agency advice issued
Groundwater levels are now falling steadily. We do not expect further flooding and the flood alert has been removed. Rivers and streams remain full due to high groundwater levels and will react rapidly to further rainfall. Groundwater levels will remain sensitive to further rainfall over the coming weeks. We will continue to monitor the situation and will issue further. We will continue to monitor the situation and will issue further alerts or warnings if necessary. Septic tanks may need emptying as soakaways may not work for some time. Don't put yourself or others at risk.
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Draycot Foliat | Groundwater Level | +0.47m | 157.71m |
| Water Acre | Groundwater Level | +0.26m | 143.10m |
| Hazelberry Plantation | Groundwater Level | +0.23m | 125.47m |
| Longacre | Groundwater Level | +0.18m | 143.27m |
| Everleigh | Groundwater Level | +0.08m | 128.52m |