Flood Alert Issued for River Blackwater in Hampshire and Wiltshire
This alert is no longer in effect.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 the River Blackwater area, with heavy rain expected to cause flooding in parts of Hampshire and Wiltshire on Wednesday.
Read this weather record in 30 seconds
- Record type
- Flood Alert
- Affected area
- Hampshire and Wiltshire
- 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 and Wiltshire.
Alert Details
The Environment Agency has issued a flood alert (Severity Level 3) for the River Blackwater. This alert indicates that flooding is possible due to high river levels resulting from heavy rainfall forecast for the region.
Affected Areas
The alert covers the Solent and South Downs area, specifically impacting the following regions in Hampshire and Wiltshire:
- Cadnam
- West Wellow
- Landford
- Ower
- East Wellow (specifically affecting the mill building)
What You Should Do
Residents in the affected areas are advised to take the following precautions:
- Consider activating any flood protection products you may have, including pumps.
- Monitor local rainfall and river levels closely.
- Avoid driving or walking through flooded fields and roads.
Expected Conditions
Forecasters expect approximately 25mm of rain on Wednesday, February 18, 2026. This heavy rain is likely to cause the River Blackwater to rise, leading to the flooding of land, fields, and roads. Water levels are expected to be particularly high around the mill building at East Wellow.
Timeline
The flood risk is most significant on Wednesday, February 18, 2026. River levels and the associated flood risk are expected to begin reducing by Thursday, February 19, 2026. The Environment Agency will monitor the situation and provide an update by 6:00 PM on February 19, 2026, or sooner if conditions change.
Original source: Environment Agency Official Notice ↗
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