Corin Dam

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Corin Dam
Corin Dam aerial W.jpg
Corin Reservoir, 2009
Australia Capital Territory location map.svg
Red pog.svg
Location of the Corin Dam in the ACT
CountryAustralia
Location Australian Capital Territory
Coordinates 35°33′55″S148°49′52″E / 35.56541°S 148.83108°E / -35.56541; 148.83108 Coordinates: 35°33′55″S148°49′52″E / 35.56541°S 148.83108°E / -35.56541; 148.83108
Purpose Potable water supply
StatusOperational
Opening date1968 (1968)
Owner(s) Icon Water
Dam and spillways
Type of dam Embankment dam
Impounds Cotter River
Height74 m (243 ft)
Length282 m (925 ft)
Dam volume1,394×10^3 m3 (49×10^6 cu ft)
Spillways 1
Spillway type Uncontrolled side channel
Spillway capacity1,190 m3/s (42,000 cu ft/s)
Reservoir
CreatesCorin Reservoir
Total capacity75,500 ML (1.66×1010 imp gal; 1.99×1010 US gal)
Active capacity70,800 ML (1.56×1010 imp gal; 1.87×1010 US gal)
Catchment area 197 km2 (76 sq mi)
Surface area315 ha (780 acres)
Normal elevation956 m (3,136 ft)
Website
www.iconwater.com.au/corin

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.

Contents

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 (49.2×10^6 cu ft). The wall impounds 75,500 megalitres (1.66×1010 imp gal; 1.99×1010 US gal) of water held within the Corin Reservoir, forming a surface area of approximately 3.15 square kilometres (1.22 sq mi) drawn from a catchment area of 197 square kilometres (76 sq mi). [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 955.54 metres (3,135 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.

See also

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References

  1. Entry for Willima Corin in Pike, Douglas (1996). Australian dictionary of biography volumes 1–12, 1788–1939. Carlton, Vic.: Melbourne University Press. pp. (Vol 8) 115–6. ISBN   0522846548.
  2. 1 2 "Register of Large Dams in Australia" (Excel (requires download)). Dams information. Australian National Committee on Large Dams. 2010. Retrieved 4 April 2014.
  3. Corin Dam Icon Water

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