A Flood Alert was issued for Groundwater flooding in Hambledon in Hampshire on 26th February 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Wallington at Denmead rose 0.08m, peaking at 33.54m, while the River Hamble at North Pond climbed 0.07m.
Environment Agency advice issued
High groundwater levels may lead to flooding. Flooding is possible . Very little rain (9mm) has fallen in the last week. Groundwater levels in Hambledon remain relatively stable. 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. From Thursday 26/02/2026 to Monday 02/03/2026, only small amounts of rain are expected in Hampshire. Groundwater levels in Hambledon are expected to begin slowly falling during the weekend. Floo
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Denmead | River Wallington | +0.08m | 33.54m |
| North Pond | River Hamble | +0.07m | 35.11m |
| North Fareham weir | River Wallington | +0.07m | 0.51m |