Ask first!

All rivers in the UK evolve continuously and almost all show signs of construction work. It is vital that activities are regulated to safeguard against ecological deterioration and flooding. We provide a guide to the process.
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Tan 15 revisited

Technical Advice Note (TAN) 15 guides planners, developers, local authorities and flood-risk specialists on development, flooding and coastal erosion in Wales. An update was released on October 2019.
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