Windamere Dam
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Windamere Dam is a minor ungated rock fill with clay core embankment dam with an uncontrolled unlined rock cutting spillway across the Cudgegong River at Cudgegong, upstream of Mudgee in the Central Tablelands of New South Wales, Australia. The dam's purpose includes hydro-power, irrigation, water supply, and conservation. The impounded reservoir is called Lake Windamere.
Location and features
Commenced in 1974 and completed in 1984, the Windamere Dam is a minor ungated dam, located approximately Script error: No such module "convert". south-west of Rylstone. The dam was built by Abignano Pty Ltd on behalf of the New South Wales Department of Land and Water Conservation to supply water for irrigation and potable water for the towns of Mudgee and Gulgong.[1][2][3] Windamere Dam operates in conjunction with Burrendong Dam to supply water to the Cudgegong and Macquarie valleys.[1]
The dam wall constructed with Script error: No such module "convert". of rock fill with clay core is Script error: No such module "convert". high and Script error: No such module "convert". long. The maximum water depth is Script error: No such module "convert". and at 100% capacity the dam wall holds back Script error: No such module "convert". of water at Script error: No such module "convert". AHD. The surface area of Lake Windamere is Script error: No such module "convert". and the catchment area is Script error: No such module "convert".. The uncontrolled unlined rock cut spillway is capable of discharging Script error: No such module "convert"..[1][2][3]
Geotechnical problems included excessive grout takes in highly fractured rock in the dam foundation. The dam foundations are weathered Devonian conglomerates, sandstones and shales. The spillway is located about Script error: No such module "convert". away from the dam wall in mostly unweathered Ordovician andesite. The spillway is an unlined rock cutting that provided all the rock fill required for the construction of the dam embankment. If a spillway had been built in the weathered sedimentary rocks at the dam site full concrete lining would have been required.[4]
To allow the dam's construction, a 15 kilometre deviation of the Castlereagh Highway opened in December 1982.[5]
Power generation
A hydro-electric power station generates up to Script error: No such module "convert". of electricity from the flow of the water leaving Windamere Dam.[1]
See also
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References
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External links
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