Corin Dam
Dam in the Australian capital Territory, Australia
From Wikipedia, the free encyclopedia
The Corin Dam is an earth and rockfill embankment dam with an uncontrolled side channel spillway across the Cotter River, located within Namadgi National Park in the Australian Capital Territory, Australia. The impounded reservoir is called the Corin Reservoir which is a supply source of potable water for the city of Canberra and its environs. It is named after William Corin,[1] a pioneer in hydroelectric development in Australia.
| Corin Dam | |
|---|---|
Corin Reservoir, 2009 | |
  Corin Dam Location of the dam in the ACT | |
 Interactive map of Corin Dam | |
| Country | Australia |
| Location | Australian Capital Territory |
| Coordinates | 35°32′07″S 148°50′12″E |
| Purpose | Water supply |
| Status | Operational |
| Opening date | 1968 |
| Built by | Thiess Bros |
| Owner | Icon Water |
| Dam and spillways | |
| Type of dam | Embankment dam |
| Impounds | Cotter River |
| Height | 74 m (243 ft) |
| Length | 282 m (925 ft) |
| Dam volume | 1,394×103 m3 (49.2×106 cu ft) |
| Spillways | 1 |
| Spillway type | Uncontrolled side channel |
| Spillway capacity | 1,190 m3/s (42,000 cu ft/s) |
| Reservoir | |
| Creates | Corin Reservoir |
| Total capacity | 75,500 ML (61,200 acre⋅ft) |
| Active capacity | 70,800 ML (57,400 acre⋅ft) |
| Catchment area | 197 km2 (76 sq mi) |
| Surface area | 315 ha (780 acres) |
| Normal elevation | 953 m (3,127 ft) AHD |
| Website iconwater.com.au/corin | |
Location and features
Constructed by Thiess working from designs prepared by the Commonwealth Department of Works, the Corin Dam was completed and opened in 1968. The earthen dam wall built on a rock foundation is 74 metres (243 ft) high and 282 metres (925 ft) long with a volume of 1,394 thousand cubic metres (49.2×106 cu ft). The wall impounds 75,500 megalitres (61,200 acre⋅ft) of water held within the Corin Reservoir, forming a surface area of approximately 3.15 square kilometres (1.22 mi2) drawn from a catchment area of 197 square kilometres (76 mi2).[2] The uncontrolled side channel spillway is capable of discharging 1,190 cubic metres per second (42,000 cu ft/s) from the reservoir,[2] with a high water level approximately 953 metres (3,127 ft) above sea level.[3]
Water from the Corin, together with the Bendora (downstream) are transferred to the suburbs of Canberra via the Bendora Gravity Main.
