Flood Alert Issued for Lavant Stream at Havant Following Heavy Rain Forecast

Alert Details

The Environment Agency has issued a flood alert for the Lavant Stream at Havant. This alert was officially raised on Wednesday, February 18, 2026, at 1:30 PM, following forecasts of high river levels and significant rainfall in the Solent and South Downs area.

Affected Areas

The alert specifically covers the Lavant Stream in Havant, Hampshire. Geographic areas at immediate risk include gardens of properties located on either side of the river at Crossland Drive, gardens at Eastern Road, and the Boy’s Brigade gardens.

What You Should Do

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

• Consider activating any flood protection products you may have on your property.
• Monitor local conditions closely as the situation develops.
• Report any blockages in the stream or at debris screens to the Environment Agency hotline at 0800 80 70 60.

Expected Conditions

Approximately 25mm of rain is forecast for the region. These conditions may lead to high river levels and the potential for debris screens to become blocked, which could increase the risk of flooding to adjacent gardens. While heavy rain is expected initially, smaller amounts of rain are forecast from Thursday, February 19, through Sunday, February 22.

Timeline

Flooding is possible starting from 6:00 PM on Wednesday, February 18, 2026. The heavy rain is expected to clear during the morning of Thursday, February 19, 2026. River levels and the associated flood risk are anticipated to begin reducing from Thursday onward. The Environment Agency will provide an update on this situation by 6:00 PM on February 20, 2026, or sooner if conditions change significantly.