Warringah Council is a local government area in the northern beaches region of Sydney, in the state of New South Wales, Australia. Warringah Council administers of land, including nine beaches of coastline. It contains of natural bushland and open space, and there are four lagoons, Narrabeen Lagoon marks Warringah's northern boundary, Manly Lagoon marking the southern boundary, with Dee Why and Curl Curl Lagoons in between. It also contains Manly Dam, a popular place for recreation. The Warringah local government area includes a number of beaches for swimming and surfing.