Flood Warning Issued for Wylye Valley as Groundwater Levels Remain High in Wiltshire

Alert Details

The Environment Agency has issued a Severity Level 2 Flood Warning for the Wylye Valley in Wiltshire. This alert, managed by the Wessex area office, specifically addresses the threat of groundwater flooding as levels in Salisbury Plain remain high despite a recent plateau.

Affected Areas

The warning covers several communities within the Wylye Valley. Specific locations that could be affected include:

• Kingston Deverill
• Monkton Deverill
• Hill Deverill
• Longbridge Deverill
• Crockerton
• Norton Bavant
• Heytesbury
• Corton
• Upton Lovell
• Boyton
• Sherrington
• Stockton
• Bapton

What You Should Do

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

• Prepare property resilience measures immediately.
• Ensure that any installed flood pumps are in working order.
• Be aware that septic tanks and sewer systems may experience inundation.
• Monitor cellars for signs of flooding.
• Exercise extreme caution when driving on local roads, as flooding is expected and road surfaces may have been damaged by floodwater. Avoid driving through floodwater to prevent secondary flooding to nearby properties.

Expected Conditions

Groundwater levels at the Tilshead MOD borehole have been recorded at 108.59m. While the region has experienced a few days of drier weather, the Environment Agency forecasts further rainfall starting tomorrow, which may cause groundwater levels to rise again through the weekend.

Timeline

The alert was officially raised on March 5, 2026, at 7:19 AM. The Environment Agency is monitoring the situation closely and expects to provide an updated message by 2:00 PM on March 11, 2026.