River Dun Flood alert 11:07pm, Wednesday 18th February

Flooding possible. Be prepared.

Flood alert

High river levels overnight may lead to flooding.
Flooding is possible on 19 February 2026 from 00:30, as a lot of rain (nearly 20mm) fell today.
Flooding could affect low-lying land and the road at Rectory Road, nearest the railway line at West Dean. Rain is forecast to continue for the next 4 hours. River levels and flood risk will remain high overnight and into tomorrow.
We are monitoring rainfall and river levels .
Consider activating any flood protection products you may have and we recommend moving cars parked close to the river in West Dean.
This message will be updated by 6:00PM on 19 February 2026 or as the situation changes.

Information supplied by the Environment Agency

This information last updated 11:07pm, Wednesday 18th February.

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Most recent flood warnings and alerts for River Dun

Warning no longer in force
Thu 19 Feb 2026, 1:12pm
Flood alert
Wed 18 Feb 2026, 11:07pm
Warning no longer in force
Wed 28 Jan 2026, 8:30am
Flood alert
Tue 27 Jan 2026, 5:16pm
Flood alert
Tue 27 Jan 2026, 6:18am
Warning no longer in force
Fri 19 Dec 2025, 10:47am
Flood alert
Thu 18 Dec 2025, 3:42pm
Warning no longer in force
Wed 29 Jan 2025, 4:01pm
Flood alert
Tue 28 Jan 2025, 3:16pm
Flood alert
Mon 27 Jan 2025, 1:43pm

Flood Warning Area Details

River Dun from West Dean to Dunbridge

Region: Solent and South Downs

Country: England

Counties covered: Hampshire, Wiltshire

Watercourses covered: River Dun

Area covered by this alert location

The area bounded in blue on the map shows the area covered by flood alerts and warnings for River Dun.

Note: the area shown on the map is the area covered by flood alerts and warnings. It is not a live map of current flooding. The area covered broadly equates to the area where the risk of flooding in any year is greater than 1% (the "hundred year" flood risk).