An Internal Drainage Board is an organization responsible for managing water levels in internal drainage districts. Synonyms for Internal Drainage Board include: Drainage Board, IDB, flood authority, water management board and flood risk management authority. These boards often have responsibilities for water management, flood prevention and land drainage. They have powers to undertake works, such as maintaining rivers and watercourses, building flood defences and constructing pumping stations. Internal Drainage Boards are typically funded by a rate, collected from the local landowners. They play a crucial role in managing flood risk and ensuring that land within drainage districts remains productive and safe.