Flood Alert Issued for Chertsey Bourne in Surrey, Bracknell Forest, and Windsor and Maidenhead

Alert Details

The Environment Agency has issued a flood alert (Severity Level 3) for the Chertsey Bourne. High river levels have made flooding possible starting 1 March 2026. The agency is currently monitoring rainfall and river levels while liaising with emergency services and local authorities.

Affected Areas

The alert specifically covers the Chertsey Bourne, The Moat, and Moat areas. Geographic regions impacted include:

• Surrey (particularly areas of Chertsey close to the River Bourne)
• Bracknell Forest
• Windsor and Maidenhead

What You Should Do

Residents in the affected areas are advised to take the following precautions:

• Avoid using low-lying footpaths near watercourses.
• Avoid any bridges located near local rivers or streams.
• Monitor current river levels online for the latest updates on the situation.

Expected Conditions

River levels are currently high on the Chertsey Bourne. Flooding of low-lying land and roads is expected to continue today, 1 March 2026. While light rainfall is forecast for today, weather conditions are expected to turn dry tomorrow. Despite the lack of heavy rain, river levels are expected to remain high over the next few days.

Timeline

The alert was officially raised on 1 March 2026. The Environment Agency expects the high water levels to persist for several days. A formal update to this message is scheduled to be provided by 8:00 PM on 2 March 2026, or sooner if the situation changes.