A Flood Alert was issued for Groundwater flooding in villages surrounding Andover in Hampshire, Wiltshire on 11th March 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The Groundwater Level at Windwhistle rose 1.13m, peaking at 71.51m, while the Groundwater Level at Homington climbed 0.84m.
Environment Agency advice issued
High groundwater levels may lead to flooding. Flooding is possible . Little rain (7mm) has been recorded in the last week. Cellar flooding is expected to be occurring in Appleshaw, Hatherden and possibly Penton Grafton. Sewerage system impacts are ongoing in Appleshaw and Penton Mewsey. The main road into Penton Grafton is flooded, and water is affecting Deacon and Down Road, Kimpton. From Thursday 12/03/2026 into Friday 13/03/2026, between 15 and 20mm of rain is expected to affect Hampshire. Drier weather is expected over the weekend. Groundwater levels are expected to remain very high thro
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Windwhistle | Groundwater Level | +1.13m | 71.51m |
| Homington | Groundwater Level | +0.84m | 65.80m |
| Odstock | Groundwater Level | +0.80m | 60.10m |
| Stoford Cross | Groundwater Level | +0.57m | 68.99m |
| Clarendon | Groundwater Level | +0.44m | 72.42m |
| Everleigh | Groundwater Level | +0.37m | 129.39m |
| Chitterne Down | Groundwater Level | +0.36m | 98.75m |
| Queen Manor Farm | Groundwater Level | +0.27m | 70.13m |
| Hazelberry Plantation | Groundwater Level | +0.21m | 126.25m |