River Blackwater Flood alert 10:58am, Tuesday 17th February

Flood alert

High river levels on Wednesday may lead to flooding.
Flooding is possible on 18 February 2026 as a lot of rain is forecast (25mm).
If heavy rain affects the River Blackwater, flooding will affect land, fields, and roads at Cadnam, West Wellow, Landford and Ower. Water levels will also be very high around, and affect, the mill building at East Wellow. River levels and flood risk should begin to reduce by Thursday 19/02/2026.
We are monitoring rainfall and river levels and will ensure the river is kept free of reported blockages.
Consider activating any flood protection products you may have , including pumps.
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 10:58am, Tuesday 17th February.

Most recent flood warnings and alerts for River Blackwater

Warning no longer in force
Sun 22 Feb 2026, 4:14pm
Flood alert
Sat 21 Feb 2026, 4:33pm
Flood alert
Thu 19 Feb 2026, 3:25pm
Flood alert
Tue 17 Feb 2026, 10:58am
Flood alert
Mon 16 Feb 2026, 11:22am
Flood alert
Sat 14 Feb 2026, 1:33pm
Flood alert
Thu 12 Feb 2026, 1:11pm
Flood alert
Tue 10 Feb 2026, 1:43pm
Flood alert
Sun 8 Feb 2026, 5:20pm
Flood alert
Fri 6 Feb 2026, 4:00pm

Flood Warning Area Details

Landford to East Wellow and Wade Bridge on the River Blackwater, and Cadnam to Ower on the Cadnam River

Region: Solent and South Downs

Country: England

Counties covered: Hampshire, Wiltshire

Watercourses covered: River Blackwater

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 Blackwater.

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).