A Flood Alert was issued for Groundwater flooding in villages surrounding Andover in Hampshire, Wiltshire on 25th March 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The Groundwater Level at Clarendon rose 0.28m, peaking at 70.64m, while the Groundwater Level at Stoford Cross climbed 0.28m.
Environment Agency advice issued
Groundwater levels in the villages surrounding Andover are high but falling very slowly. Cellar flooding is expected to be ongoing in Appleshaw, Hatherden and possibly Penton Grafton. Sewerage system impacts are expected be occurring in Appleshaw and Penton Mewsey. In Penton Grafton, the main road is flooded. Only very small amounts of rain are forecast from Wednesday 25/03/2026 to Sunday 29/03/2026. Groundwater levels are expected to continue slowly falling this week. Flooding impacts will continue into April. We are closely monitoring the situation. Residents are advised to ensure that pumps
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Clarendon | Groundwater Level | +0.28m | 70.64m |
| Stoford Cross | Groundwater Level | +0.28m | 66.46m |
| Odstock | Groundwater Level | +0.26m | 57.47m |
| Hazelberry Plantation | Groundwater Level | +0.25m | 125.15m |
| Queen Manor Farm | Groundwater Level | +0.17m | 69.04m |
| Homington | Groundwater Level | +0.16m | 63.43m |
| Chitterne Down | Groundwater Level | +0.14m | 97.51m |
| Everleigh | Groundwater Level | +0.09m | 128.41m |