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Flood Alert

Flood Alert: Groundwater flooding in Deane and Ashe in North Hampshire - 25th March 2026

📍 Hampshire 🌊 Groundwater 📅 25 March 2026

A Flood Alert was issued for Groundwater flooding in Deane and Ashe in North Hampshire in Hampshire on 25th 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 has fallen by 9cm in the last week. Flooding could affect the ability of septic tanks to operate effectively. From Wednesday 25/03/2026 to Sunday 29/03/2026, only very small amounts of rain are forecast. We are closely monitoring the situation. Residents are advised to ensure that pumps are working where they have been installed. This message will be updated by 18:00 on 01/04/2026.

This report is automatically compiled from Environment Agency flood warning records and FloodRadar river-level monitoring data. Figures are observed gauge readings during the event period. This is a historical record, not a live warning — always check current flood warnings and gov.uk.