Portsmouth City Council’s overall aim is to reduce the risks of flooding to people and property. When drawing up plans or considering development applications, we aim to direct development to sites with lower flood risk. To be able to do this, we need to know as much as possible about the flooding risks across the city.

This guide outlines the assessments we’ve carried out. All reports, annexes, and maps are available to downloaded in PDF format.

Contact us

To find out more about our work in the city, contact the coastal and drainage team at drainageteam@portsmouthcc.gov.uk or on 023 9284 1588, or write to Portsmouth City Council, Civic Offices, Guildhall Square, Portsmouth, PO1 2NE.