Darwin River Dam is an earth- and rock-filled embankment dam spanning the Darwin River in the Northern Territory of Australia, located in the Darwin River settlement approximately south of the city of Darwin. Completed on 29 June 1972 at a construction cost of A$9 million, the dam was built primarily to supply potable water for Darwin and remains operational today under the management of PowerWater. The dam wall stands 27 metres (89 ft) high and stretches 560 metres (1,840 ft) in length, impounding a substantial reservoir drawn from a catchment area of 205 square kilometres (79 sq mi). At full capacity, the reservoir holds an impressive 265,500 megalitres and covers a surface area of 4,000 hectares (9,900 acres), making it eleven times larger than the nearby Manton Dam — a scale that speaks to the significant fishable water this impoundment once offered.