Flood Alert Issued for Chertsey Bourne Affecting Surrey and Berkshire Areas

Alert Details

The Environment Agency has issued a flood alert (Severity Level 3) for the Chertsey Bourne area within the Thames region. The alert was officially raised on March 4, 2026, due to high river levels.

Affected Areas

The geographic scope of this alert includes Bracknell Forest, Surrey, and Windsor and Maidenhead. Specific areas of concern include low-lying land and roads in Chertsey situated close to the River Bourne. The alert specifically mentions the Chertsey Bourne and The Moat.

What You Should Do

Residents are advised to avoid using low-lying footpaths and any bridges located near local watercourses. The Environment Agency recommends checking river levels online for the most current updates on the situation.

Expected Conditions

River levels are currently falling but remain high on the Chertsey Bourne. Flooding of low-lying land and roads is expected to continue throughout Wednesday, March 4, 2026. While conditions are expected to remain dry today and tomorrow, river levels are projected to stay high over the next several days.

Timeline

The alert was issued at 6:17 PM on March 4, 2026. High river levels are expected to persist for the next few days. The Environment Agency will provide an update on this situation by 8:00 PM on March 5, 2026, or sooner if conditions change significantly.