Flood Alert Issued for Deane and Ashe in North Hampshire Due to Rising Groundwater
This alert is no longer in effect.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 Deane and Ashe as rising groundwater levels affect septic tank operations and local river flows.
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- Record type
- Flood Alert
- Affected area
- North Hampshire
- 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 North Hampshire.
Alert Details
The Environment Agency has issued a flood alert for groundwater flooding in Deane and Ashe, located in North Hampshire. This alert is managed by the Solent and South Downs area office and indicates that flooding is possible due to high groundwater levels.
Affected Areas
The primary areas affected are Deane and Ashe in North Hampshire. Monitoring data from a borehole in Oakley indicates that water levels have risen by 26cm over the past week. The River Test is currently flowing through Deane and Ashe as a result of these conditions.
What You Should Do
Residents in the affected areas are advised to take the following precautions:
- Prepare property resilience measures to protect against potential water ingress.
- Ensure that all installed pumps, including those used to reduce water levels, are in good working order.
- Monitor local conditions, particularly if you rely on a septic tank, as high groundwater is currently affecting their ability to operate effectively.
Expected Conditions
While only 7mm of rain has fallen in the last week, groundwater levels remain high. This has caused the River Test to flow in areas where it is not always present and is impacting the functionality of septic tanks. If the area experiences further heavy rain, cellar flooding in Deane could become a possibility. However, the current forecast from Wednesday, March 4, 2026, to Sunday, March 8, 2026, is for mostly dry weather.
Timeline
The alert was raised on March 4, 2026. Groundwater levels are expected to stabilise within the next week given the dry forecast. The Environment Agency is closely monitoring the situation and will provide an update by 6:00 PM on March 11, 2026, or sooner if conditions change significantly.
Original source: Environment Agency Official Notice ↗
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