Happy Jacks Dam
Dam in Snowy Mountains, New South Wales / From Wikipedia, the free encyclopedia
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Happy Jacks Dam is a major ungated concrete gravity dam across the Tumut River in the Snowy Mountains region of New South Wales, Australia. The dam's main purpose is for the generation of hydro-power and is one of the sixteen major dams that comprise the Snowy Mountains Scheme, a vast hydroelectricity and irrigation complex constructed in south-east Australia between 1949 and 1974 and now run by Snowy Hydro.
Quick Facts Country, Location ...
Happy Jacks Dam | |
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Location of the Happy Jacks Dam in New South Wales | |
Country | Australia |
Location | Snowy Mountains, New South Wales |
Coordinates | 36°01′S 148°26′E |
Status | Operational |
Opening date | 1959 |
Owner(s) | Snowy Hydro |
Dam and spillways | |
Type of dam | Gravity dam |
Impounds | Tumut River |
Height | 29 metres (95 ft) |
Length | 76 metres (249 ft) |
Dam volume | 8,950 cubic metres (316,000 cu ft) |
Spillways | 1 |
Spillway type | Uncontrolled |
Spillway capacity | 1,827 cubic metres per second (64,500 cu ft/s) |
Reservoir | |
Creates | Happy Jacks Pondage |
Total capacity | 271 megalitres (9.6×10 |
Surface area | 5 hectares (12 acres) |
Normal elevation | 1,192 metres (3,911 ft) |
Close
The impounded reservoir is called the Happy Jacks Pondage. The dam wall is immediately downstream of the confluence of Happy Jacks Creek and the Tumut River.