Collection: Severn River Basin District preliminary flood risk assessments
The Severn River Basin District is home to over 5.3 million people and covers an area of 21,590 square kilometres. The River Severn is the longest river in Britain and flows into the Severn Estuary. The river basin district includes the River Severn and its tributaries, the rivers of South East Wales, including the Wye, Usk and Taff, and those in Avon and Somerset that drain into the Severn Estuary.
Under the Flood Risk Regulations 2009, each lead local flood authority must carry out a preliminary flood risk assessment (PFRA) for its area and review it every 6 years.
PFRAs are used to identify areas where the risk of flooding is significant.
View a map of the river basin districts.