Flood Warning Issued for Groundwater Flooding in Iwerne Minster, Dorset

Alert Details

The Environment Agency has issued a Flood Warning (Severity Level 2) for groundwater flooding for the Iwerne in the Wessex area. This alert was officially raised on March 2, 2026, at 1:34 PM following reports of high groundwater levels in the region.

Affected Areas

The primary geographic area affected by this warning is Iwerne Minster, located within the jurisdiction of the Dorset Council.

What You Should Do

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

• Prepare property resilience measures immediately.
• Ensure that any installed flood pumps are functional and switched on.
• Consider alternative power sources in case of potential power cuts.
• Do not drive through floodwater, as this can create bow waves that damage nearby properties.
• Be aware that septic tanks and sewer systems may become inundated.

Expected Conditions

Groundwater levels at the Iwerne Hill Farm borehole have been recorded at 112.02m. While levels are currently starting to fall steadily, they remain significantly high. Expected impacts include the flooding of cellars in vulnerable properties and the flooding of local roads. The weather forecast indicates a mostly dry week, with the exception of Thursday, with drier conditions expected to continue into the weekend.

Timeline

The alert is effective as of March 2, 2026. The Environment Agency is closely monitoring the situation and expects to provide an update by 2:00 PM on March 9, 2026, or sooner if conditions change significantly.