Flood Alert Issued for River Adur East Branch in East and West Sussex

Alert Details

The Environment Agency has issued a flood alert for the River Adur East Branch. This level 3 severity alert indicates that flooding is possible and residents should remain prepared for minor impacts in the affected region.

Affected Areas

The alert covers the Solent and South Downs area, specifically impacting geographic regions within East Sussex and West Sussex along the River Adur. Specific locations identified at risk include fields, rural roads, and properties at Mock Bridge near Shermanbury.

What You Should Do

Residents and travelers are advised to avoid roads that are susceptible to flooding, specifically the A281 at Mock Bridge. Residents in low-lying areas should monitor local water levels and prepare for potential minor flooding in gardens and rural transit routes.

Expected Conditions

Persistent rain is forecast to continue until 17:00 on February 15, 2026. While only a small rise in the river is currently expected, impacts are likely to include the flooding of fields and rural roads. From 22:00 on February 15, minor flooding may approach the gardens of properties at Mock Bridge. Conditions are expected to remain unsettled throughout February, with further widespread rain forecast for Wednesday.

Timeline

• Rain Duration: Persistent rainfall expected until 17:00 on February 15, 2026.
• Peak Levels: River levels are expected to peak and begin falling by 06:00 on February 16, 2026.
• Short-term Forecast: Isolated showers are expected Monday and Tuesday, allowing levels to fall toward normal.
• Long-term Outlook: Widespread rain is forecast for Wednesday, February 18, which may cause flood risks to return.
• Next Update: The Environment Agency will update this message by 20:00 on February 16, 2026.