A Flood Alert was issued for Groundwater flooding in Deane and Ashe in North Hampshire in Hampshire on 18th March 2026. Affected watercourses included the Groundwater.
Local monitoring gauges did not record a significant level change for this event, which may indicate a precautionary or rainfall-forecast-based alert.
Environment Agency advice issued
Groundwater levels in Deane and Ashe are high but slowly falling. At the borehole in Oakley, the level peaked on Saturday 14/03/2026 and has since fallen by 7cm. Flooding could affect the ability of septic tanks to operate effectively. Dry weather is forecast from Wednesday 18/03/2026 to Sunday 22/03/2026. River levels and flood risk are likely to remain for weeks. 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 18:00 25/03/2026.