Flood Alert Issued for Groundwater Flooding in Vernham Dean, Upton, and Bourne Valley
This alert is no longer in effect.
Environment Agency issued it on April 6, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this Environment Agency flood warning directly from Environment Agency's official public data feed. See our methodology for full source attribution and refresh cadence.
The Environment Agency has issued a flood alert for Hampshire as high groundwater levels threaten cellars and septic tank operations in the Bourne Valley region.
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- Record type
- Flood Alert
- Affected area
- Hampshire, England
- Issued
- April 6, 2026
- Issuing authority
- Environment Agency
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Hampshire, England.
Alert Details
The Environment Agency has issued a flood alert (Severity Level 3) for groundwater flooding in the Solent and South Downs area. High groundwater levels are currently being monitored as flooding becomes possible in the region due to recent rainfall and rising water tables.
Affected Areas
The alert specifically covers Vernham Dean, Upton, and the Bourne Valley in Hampshire. Current reports indicate that flooding is already affecting a small number of cellars in Upton. Additionally, residents in St Mary Bourne, Hurstbourne Tarrant, and Stoke should remain vigilant for potential impacts to cellars and sewerage systems throughout March.
What You Should Do
Residents in the affected areas, particularly those in Upton, are advised to prepare property resilience measures. Ensure that any installed flood pumps are in good working order. Users of septic tanks should be aware that systems may struggle to operate properly due to the high water table. The Environment Agency is closely monitoring the situation.
Expected Conditions
Approximately 19mm of rain has fallen over the last week. While groundwater levels at Vernham Dean have begun to stabilise, further precipitation is expected. Forecasts indicate between 15mm and 25mm of rain will affect Hampshire from Thursday, February 26, into Friday. If heavy rain impacts the Bourne Valley, groundwater levels are expected to continue rising for another two weeks.
Timeline
The alert was raised on February 24, 2026. While dry weather is expected on Tuesday, Wednesday, and Saturday of this week, the threat of cellar flooding and sewerage impacts may persist into March. The Environment Agency will provide an update on the situation by 6:00 PM on March 3, 2026, or sooner if conditions change.
Original source: Environment Agency Official Notice ↗
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