A Flood Alert was issued for Groundwater flooding in Hambledon in Hampshire on 5th March 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Wallington at Denmead rose 0.15m, peaking at 33.61m, while the River Hamble at North Pond climbed 0.06m.
Environment Agency advice issued
Groundwater levels in Hambledon are high but slowly falling. At the borehole at Whitedale Farm, the level has fallen by 50cm in the last week. Currently, widespread cellar flooding is expected. Groundwater is infiltrating sewers and causing issues with overflowing manholes. Fareham Road is closed, and water is flowing onto the road on the north side of East Street. Only small amounts of rain are forecast from Thursday 05/03/2026 to Monday 09/03/2026. Groundwater levels in Hambledon will continue to slowly fall. We are closely monitoring the situation and liaising with Hambledon Flood Action Gr
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Denmead | River Wallington | +0.15m | 33.61m |
| North Pond | River Hamble | +0.06m | 35.05m |