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Groundwater flooding in the Candovers and Old Alresford

Areas at risk of groundwater flooding in Preston Candover, Chilton Candover, Brown Candover and Old Alresford in Hampshire

Groundwater Hampshire Solent and South Downs Code: 065FAG009

Flood Alert Active Warning

Raised: 24 Feb 2026 at 4:41pm • Updated: 24 Feb 2026 at 4:41pm
High groundwater levels may lead to flooding. 
Flooding is possible . Mostly light rain (22mm) has fallen in the last week. 
Groundwater levels in Preston Candover and Old Alresford have started to stabilise. Flooding is affecting the ability of septic tanks to operate effectively. In Preston Candover and Old Alresford, a small number of properties will experience cellar flooding. On Tuesday 24/02/2026, Wednesday 25/02/2026 and Saturday 28/02/2026, dry weather is expected. From Thursday 26/02/2026 into Friday 27/02/2026, further rain (between 15 and 25mm) is forecast. If heavy rain occurs over the next week, isolated properties in Old Alresford could experience ground floor flooding in March 2026. 
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 . 
This message will be updated by 6:00PM on 03 March 2026 or as the situation changes.

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Flood Event History (1)

24 Feb 2026 at 4:41pm Flood Alert
High groundwater levels may lead to flooding.  Flooding is possible . Mostly light rain (22mm) has fallen in the last week.  Groundwater levels in Preston Candover and Old Alresford have started to stabilise. Flooding is affecting the ability of septic tanks to operate effectively. In Preston Candov...

Related Flood Areas

Data from the Environment Agency • Area code: 065FAG009