Flood Alert Issued for Tidal Thames Riverside from Putney to Teddington

Alert Details

The Environment Agency has issued a flood alert for the Tidal Thames riverside. This alert, designated as severity level 3, indicates that flooding is possible due to rising astronomical tide levels.

Affected Areas

The alert covers the geographic region of Greater London, specifically affecting the boroughs of Hammersmith and Fulham, Hounslow, Richmond upon Thames, and Wandsworth. The primary area of concern is the riverside from Putney Bridge to Teddington Weir. Specific locations identified as having a possibility of flooding include:

• Putney Embankment (SW15)
• Chiswick Mall and Strand on the Green (W4)
• Thames Bank at Mortlake (SW14)
• Ranelagh Drive (TW1)
• Friars Lane and Water Lane (TW9)
• Riverside and The Embankment at Twickenham
• The Towpath below Teddington Lock

What You Should Do

Residents and visitors in the affected areas are advised to take care and avoid walking, cycling, or driving through flood water. The Environment Agency is closely monitoring the situation as river conditions evolve.

Expected Conditions

High tides are expected to lead to localized flooding. At Richmond, the forecast high tide is 4.87 mAOD. While riverside paths and roads may be impacted, flooding of properties is not currently expected. The river flow at Teddington Weir is currently steady at 270 cubic metres per second, though flows are anticipated to begin rising tomorrow.

Timeline

Flooding is possible between 2:30 PM and 4:30 PM on February 18, 2026. The peak tide at Richmond is forecast for 3:30 PM. This message is scheduled to be updated by 8:00 PM on February 18, 2026, or sooner if the situation changes.