Flood Alert Issued for Chertsey Bourne: High River Levels Impacting Surrey and Berkshire

Alert Details

The Environment Agency has issued a Flood Alert (Severity Level 3) for the Chertsey Bourne area. The alert was officially raised at 8:24 AM on February 22, 2026, due to high river levels that may lead to flooding.

Affected Areas

The geographic scope of this alert includes parts of Surrey, Bracknell Forest, and Windsor and Maidenhead. Specific areas at risk include low-lying land and roads close to the Chertsey Bourne, The Moat, and Moat rivers. Residents in Chertsey near the River Bourne should remain particularly vigilant.

What You Should Do

Local residents are advised to take the following precautions:

• Avoid using low-lying footpaths near local watercourses.
• Do not attempt to cross bridges near the affected rivers if water levels are high.
• Monitor current river levels via the Environment Agency’s online monitoring service.
• Stay tuned for further updates as the situation evolves.

Expected Conditions

River levels are currently high but are reported to be slowly falling on parts of the Chertsey Bourne. However, flooding of low-lying land and roads is expected to continue throughout the day on February 22, 2026. While light rainfall is forecast for this morning, less rainfall is anticipated over the coming days. Despite the decrease in precipitation, river levels are expected to remain high while continuing their slow decline.

Timeline

The alert is effective as of February 22, 2026. The Environment Agency is currently monitoring rainfall and river levels while liaising with local authorities and emergency services. This message is scheduled to be updated by 8:00 PM on February 23, 2026, or sooner if the situation changes significantly.