Flood Alert Issued for Lower River Colne and Frays River Across Multiple Counties
This alert is no longer in effect.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 Lower River Colne and Frays River, warning of potential flooding on February 17, 2026, due to high river levels.
Read this weather record in 30 seconds
- Record type
- Flood Alert
- Affected area
- Hertfordshire and North London
- 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 Hertfordshire and North London.
Alert Details
The Environment Agency has issued a flood alert (Severity Level 3) for the Lower River Colne and Frays River. This alert was officially raised at 8:58 AM on February 17, 2026, by the Hertfordshire and North London office.
Affected Areas
The geographic scope of this alert includes Buckinghamshire, Greater London, Hertfordshire, Hillingdon, Slough, Surrey, and Windsor and Maidenhead. Specific locations most affected include low-lying land and roads near rivers around:
- Denham Colne
- Willow Bank
- Fountains Mill
- Clisbys Bridge
- West Drayton
- Yiewsley
- Poyle Trading Estate
- Stanwell Mill
- Staines Moor
- Pound Mill (Wraysbury)
What You Should Do
Residents in the warning area are advised to take the following precautions:
- Take care and avoid walking, cycling, or driving through flood water.
- Monitor local conditions closely as river levels remain high.
- Stay away from low-lying land and roads near the River Colne.
Expected Conditions
River levels are currently high, which may lead to flooding of low-lying land and roads. Flooding is considered possible throughout the day on February 17, 2026. The Environment Agency is closely monitoring the situation as it develops.
Timeline
The alert was issued at 8:58 AM on February 17, 2026. This message is scheduled to be updated by 5:00 PM on February 17, 2026, or sooner if the situation changes.
Original source: Environment Agency Official Notice ↗
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Common questions about this Environment Agency flood warning.