Happy Jacks Dam
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.
Location and features
Completed in 1959, Happy Jacks Dam is a major dam, located within the Snowy Valleys local government area. The dam was constructed by a consortium comprising Kaiser-Walsh-Perini-Raymond based on engineering plans developed by the United States Bureau of Reclamation under contract from the Snowy Mountains Hydroelectric Authority.
The dam wall comprising 8,950 cubic metres (316,000 cu ft) of concrete is 29 metres (95 ft) high and 76 metres (249 ft) long. At 100% capacity the dam wall holds back 271 megalitres (9.6×10 cu ft) of water. The surface area of Happy Jacks Pondage is 5 hectares (12 acres). The uncontrolled spillway is capable of discharging 1,827 cubic metres per second (64,500 cu ft/s).
See also
- Kosciuszko National Park
- List of dams and reservoirs in New South Wales
- Snowy Hydro Limited
- Snowy Mountains Scheme
- Snowy Scheme Museum
Notes
- ^ "Register of Large Dams in Australia". Dams information. Australian National Committee on Large Dams. 2010. Archived from the original (Excel (requires download)) on 12 December 2013. Retrieved 12 May 2013.
- ^ "Dams". Snowy Mountains Scheme. Snowy Hydro. Archived from the original on 3 May 2013. Retrieved 12 May 2013.
References
- Bevitt, R.; Erskine, W.; Gillespie, G.; Harriss, J.; Lake, P.; Miners, B.; Varley, I. (May 2009). Expert panel environmental flow assessment of various rivers affected by the Snowy Mountains Scheme. NSW Department of Water and Energy. ISBN 978-0-7347-5656-5.