The law on flood risk management is generally found in the Flood and Water Management Act 2010, the functions in which are largely devolved to the Welsh Ministers.
The 2010 Act provides for a national flood and coastal erosion risk management strategy in relation to Wales, and for local flood risk management strategies.
The Flood Risk Regulations 2009 implement the requirements of the European Floods Directive .The Directive aims to provide a consistent approach to managing flood risk. More information on EU law and the impact of EU Withdrawal is available here.
The law in relation to coastal erosion is generally to be found in the Coast Protection Act 1949, functions under which have generally been transferred to the Welsh Ministers.
The law in relation to land drainage is generally to be found in the Land Drainage Act 1991. This area of law includes such matters as duties on landowners to drain land and protect land from flooding, and the functions of Internal Drainage Boards, Natural Resources Wales and the Welsh Ministers.