A Flood Alert was issued for Groundwater flooding in Twyford and Hensting in Hampshire on 23rd February 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The Groundwater Level at Clarendon rose 0.18m, peaking at 74.16m.
Environment Agency advice issued
High groundwater levels may lead to flooding. Flooding is possible , as 31mm of rain has fallen in the last week. Groundwater levels are slowly rising. Flooding is affecting cellars of a small number of properties in Twyford and Hensting. Water is flowing on Hensting Lane. From Thursday 26/02/2026, a larger number of properties in Twyford could experience cellar flooding. From Monday 23/02/2026 to Wednesday 25/02/2026, dry weather is expected. Further rain (between 15 and 25mm) is forecast from Thursday 26/02/2026 into Friday 27/02/2026. Groundwater levels are expected to continue rising slo
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Clarendon | Groundwater Level | +0.18m | 74.16m |