A Flood Warning was issued for Groundwater flooding in the Bourne Valley - The Winterbournes in Hampshire, Wiltshire on 20th March 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The Groundwater Level at Odstock rose 0.44m, peaking at 58.17m, while the Groundwater Level at Stoford Cross climbed 0.44m.
Environment Agency advice issued
High groundwater levels are causing flooding. Groundwater levels in Salisbury Plain are high but slowly falling. Areas that could be affected include: Winterbourne Gunner, Winterbourne Dauntsey, Winterbourne Earls and Laverstock . The groundwater level at the Clarendon borehole is at 71.00m, and remains reactive to further rainfall. High groundwater levels will influence the level of the River Bourne as well, increasing the risk of fluvial flooding. Residents are advised to prepare property resilience measures and ensure that pumps are working where they have been installed. Residents may expe
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Odstock | Groundwater Level | +0.44m | 58.17m |
| Stoford Cross | Groundwater Level | +0.44m | 67.18m |
| Windwhistle | Groundwater Level | +0.44m | 68.89m |
| Clarendon | Groundwater Level | +0.32m | 71.16m |
| Homington | Groundwater Level | +0.31m | 63.70m |
| Hazelberry Plantation | Groundwater Level | +0.23m | 125.55m |
| Queen Manor Farm | Groundwater Level | +0.21m | 69.39m |
| Chitterne Down | Groundwater Level | +0.20m | 97.83m |
| Everleigh | Groundwater Level | +0.08m | 128.55m |