Witham Fourth District Internal Drainage Board

Witham Fourth District Internal Drainage Board covers an area of 40,000 hectares in Lincolnshire, from Boston in the south to Coningsby and Wainfleet in the north.


Got a question about our drainage network?

Go to our frequently asked questions.


Providing you with access to all our documentation

A range of documents including Finance, Board Policy, Legislation, notices and other useful information.


Our district spans 40,000 hectares in Lincolnshire

Check if the watercourse you are interested in is in our area.

Incident of flooding or similar emergencies?

Out of hours number 01205 310099

For emergency use only and all other enquiries should be made to the head office.

The Witham Fourth Internal Drainage Board

The Witham Fourth District Internal Drainage Board is a public body responsible for land drainage and flood defence in and around the area. We work in co-operation with the Environment Agency, local authorities and other drainage boards to help protect land and property from potential flood risk.