The Board has adopted the key watercourses within its drainage districts and carries out maintenance activities to them. The Board recognises that within its drainage districts they have to make a balance between land drainage and biodiversity. Ensuring the Boards maintenance activities aid in flood risk management while promoting and encouraging biodiversity.
These watercourses are considered critical to the overall drainage network within each district. They are however managed under what is known as permissive powers. This means that some watercourses may not always receive as much maintenance as others.