A Flood Alert was issued for Groundwater flooding in Deane and Ashe in North Hampshire in Hampshire on 11th March 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The Groundwater Level at Chapel Wood rose 0.11m, peaking at 111.78m.
Environment Agency advice issued
High groundwater levels may lead to flooding. Flooding is possible . Light rain (10mm) was recorded in the last week. At the borehole in Oakley, the level has risen by 10cm in the last week. Flooding is affecting the ability of septic tanks to operate effectively. The River Test will be flowing in Deane and Ashe. Groundwater is now very close to the level we expect cellar flooding in Deane. From Thursday 12/03/2026 into Friday 13/03/2026, between 15 and 20mm of rain is expected to affect Hampshire. Saturday 14/03/2026 and Sunday 15/03/2026 are expected to be mostly dry. If heavy rain affects
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Chapel Wood | Groundwater Level | +0.11m | 111.78m |