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Flooding possible. Be prepared.
High groundwater levels may lead to flooding.
Flooding is possible as a lot of rain (49mm) has fallen in the last week.
Flooding is expected to begin affecting a small number of cellars in Upton before the weekend. Septic tanks will also struggle to operate properly as they become overwhelmed with groundwater. Further rain (between 20 and 50mm) is forecast from today (Wednesday 11/02/2026) to Sunday 15/02/2026. Groundwater levels in the valley are expected to continue rising for much of February. Impacts to property at Vernham Dean, Hurstbourne Tarrant, Stoke or St Mary Bourne could occur during late-February if heavy rain continues to affect the Bourne Valley.
We are closely monitoring the situation .
Residents are advised to prepare property resilience measures and ensure that pumps are working where they have been installed . All residents in the Bourne Valley should remain prepared.
This message will be updated by 6:00PM on 18 February 2026 or as the situation changes.
Information supplied by the Environment Agency
This information last updated 12:05pm, Wednesday 11th February.
Communities at risk of groundwater flooding in Vernham Dean, Upton and the Bourne Valley in North Hampshire including Hurstbourne Tarrant and St Mary Bourne
Region: Solent and South Downs
Country: England
Counties covered: Hampshire
Watercourses covered: Groundwater
The area bounded in blue on the map shows the area covered by flood alerts and warnings for Groundwater flooding in Vernham Dean, Upton and the Bourne Valley.
Note: the area shown on the map is the area covered by flood alerts and warnings. It is not a live map of current flooding. The area covered broadly equates to the area where the risk of flooding in any year is greater than 1% (the "hundred year" flood risk).
No current or recent warnings.
No current or recent warnings.