| Mangrove Creek Dam | |
|---|---|
  Location of the Mangrove Creek Dam in New South Wales | |
| Country | Australia |
| Location | Central Coast, New South Wales |
| Coordinates | 33°12′54″S 151°07′04″E / 33.21500°S 151.11778°E |
| Purpose | Water supply |
| Status | Operational |
| Construction began | 1978 |
| Opening date | 1982 |
| Owner(s) | Central Coast Water Corporation |
| Dam and spillways | |
| Type of dam | Embankment dam |
| Impounds | Mangrove Creek |
| Height | 80 metres (260 ft) |
| Length | 380 metres (1,250 ft) |
| Width (crest) | 6 metres (20 ft) |
| Width (base) | 250 metres (820 ft) |
| Dam volume | 1,340,000 cubic metres (47,000,000 cu ft) |
| Spillway type | Concrete lined chute |
| Spillway capacity | 570 cubic metres per second (20,000 cu ft/s) |
| Reservoir | |
| Total capacity | 190,000 megalitres (6,700×106 cu ft) |
| Catchment area | 101 square kilometres (39 sq mi) |
| Surface area | 7 square kilometres (2.7 sq mi) |
| Maximum water depth | 65 metres (213 ft) |
| Website www | |
Mangrove Creek Dam, a concrete faced rockfill embankment dam, is the primary reservoir for water supply to residents of the Central Coast in New South Wales, Australia.
The dam, with a capacity of 190,000 megalitres (6,700×106 cu ft) and fed by a catchment area of 101 square kilometres (39 sq mi), is operated by the Central Coast Water Corporation and supplies approximately 93 per cent of water to 300,000 residents in Central Coast Council. The dam was constructed between 1978 and 1982, formed by impounding the headwaters of Mangrove Creek, a tributary of the Hawkesbury River.