Sustainable Urban Drainage

This article introduces the concept of sustainable urban drainage as defined by a range of guidelines for Sustainable Urban Drainage Systems (SuDS), Low Impact Development (LID), and Water Sensitive Urban Design (WSUD). The aims of the approach are discussed with specific reference to flood risk management and water quality management. A description is given of the types of infrastructure that can be used to control runoff production in source areas; transport and utilize water in a sustainable manner; and improve surface water quality before it is allowed to enter the local water-course. The design, implementation and maintenance of such systems are also discussed along with a review of how such guidelines are being implemented around the world. The more recent adoption of nature-based solutions in urban drainage and prospects for future developments are then reviewed.