A Flood Alert was issued for Groundwater flooding in Vernham Dean, Upton and the Bourne Valley in Hampshire on 10th March 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The Groundwater Level at Everleigh rose 0.51m, peaking at 129.62m, while the Groundwater Level at Clarendon climbed 0.49m.
Environment Agency advice issued
Groundwater levels in the Bourne Valley remain high. At the borehole in Vernham Dean, the level has fallen by 1.08m. At Upton, the level remains relatively steady. Flooding is expected to be affecting a small number of cellars in Upton. Septic tanks will also struggle to operate properly. Currently, we do not expect significant impacts to property at Vernham Dean, Hurstbourne Tarrant, Stoke or St Mary Bourne. Mostly dry weather is forecast on Tuesday 10/03/2026, Wednesday 11/03/2026 and Saturday 14/03/2026. On Thursday 12/03/2026 and Friday 13/03/2026, further rain (between 20 and 25mm) is exp
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Everleigh | Groundwater Level | +0.51m | 129.62m |
| Clarendon | Groundwater Level | +0.49m | 72.57m |
| Queen Manor Farm | Groundwater Level | +0.28m | 70.23m |
| Hazelberry Plantation | Groundwater Level | +0.21m | 126.32m |
| Water Acre | Groundwater Level | +0.14m | 143.72m |
| Chapel Wood | Groundwater Level | +0.09m | 111.73m |
| Longacre | Groundwater Level | +0.09m | 143.71m |