In Internal Drainage Board (IDB) is a local public authority that manages water levels. They are an integral part of managing flood risk and land drainage within areas of special drainage need.
The Medway IDB’s, under the Land Drainage Act 1991, exercise general powers of supervision over all matters relating to water level management within their districts. Key watercourses within their districts have been adopted by the Board for maintenance purposes although their powers are permissive. Remember the ultimate responsibility will always come back to the landowner.