| Lake Margaret Dam | |
|---|---|
  Location of the Lake Margaret Dam in Tasmania | |
| Country | Australia |
| Location | Western Tasmania |
| Coordinates | 41°59′24″S 145°34′48″E / 41.99000°S 145.58000°E |
| Purpose | Power |
| Status | Operational |
| Construction began | 1914 |
| Opening date | 1918 |
| Owner(s) | Hydro Tasmania |
| Dam and spillways | |
| Type of dam | Gravity dam |
| Impounds | Yolande River |
| Height | 17 metres (56 ft) |
| Length | 243 metres (797 ft) |
| Dam volume | 6×103 m3 (210×103 cu ft) |
| Spillways | 1 |
| Spillway type | Uncontrolled |
| Spillway capacity | 29 m3/s (1,000 cu ft/s) |
| Reservoir | |
| Creates | Lake Margaret |
| Total capacity | 15,374 megalitres (542.9×106 cu ft) |
| Catchment area | 21 square kilometres (8.1 sq mi) |
| Surface area | 15.83 hectares (39.1 acres) |
| Lake Margaret Power Station | |
| Coordinates | 41°59′24″S 145°34′48″E / 41.99000°S 145.58000°E |
| Operator(s) | Hydro Tasmania |
| Commission date |
|
| Decommission date | 2006 (A-G) |
| Type |
|
| Hydraulic head | 325 metres (1,066 ft) |
| Turbines |
|
| Installed capacity | 8.4 megawatts (11,300 hp) |
| Annual generation | 69 gigawatt-hours (250 TJ) |
| Website hydro | |
| [1] | |
The Lake Margaret Power Stations comprise two hydroelectric power stations located in Western Tasmania, Australia. The power stations are part of the King – Yolande Power Scheme and are owned and operated by Hydro Tasmania. Officially the Upper Lake Margaret Power Station, a conventional hydroelectric power station, and the Lower Lake Margaret Power Station, a mini-hydroelectric power station, the stations are generally collectively referred to in the singular format as the Lake Margaret Power Station. The stations are located approximately 2.5 kilometres (1.6 mi) apart.
The Upper Lake Margaret Power Station was constructed by the Mount Lyell Mining and Railway Company between 1911 and 1914. The 'concrete dam, pipeline, power house, transmission lines and all the necessary machinery were erected ... under the supervision of George [W.] Wright' Chief Mechanical Engineer.[2] In 1984, the station was sold to the Tasmanian Hydro-Electric Commission and was officially decommissioned in 2006 and, after a multimillion-dollar refit, was recommissioned in 2009.[3][4][5] The Lower Lake Margaret Power Station was built also by the Mount Lyell Mining and Railway Company in 1931 and decommissioned in 1995. After the implementation of a mini-hydro project in 2009, the project was recommissioned in 2010.[6]
- ^ "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 23 June 2015.
- ^ Porter, Kenneth Wiggins (December 1955). "The Peaks of Lyell. By Geoffrey Blainey. Victoria, Australia, Melbourne University Press, 1954; New York, Cambridge University Press, 1955. Pp. x + 310. $5.00". Business History Review. 29 (4): 371–373. doi:10.2307/3111866. ISSN 0007-6805.
- ^ Ford, Sean (12 November 2009). "Lake Margaret Power Station reopened". The Advocate. Tasmania. Retrieved 21 June 2015.
- ^ "The redeveloped Lower Lake Margaret power station near Queenstown was officially opened today by the Minister for Energy and Resources Bryan Green" (Press release). Hydro Tasmania. 23 July 2010.
- ^ Mathers, P. (2010). "Lake Margaret Power Scheme: a long history and assured future". Australian Journal of Electrical & Electronics Engineering (Heritage paper report). 7 (1). The Institution of Engineers, Australia (published 1 February 2010): 89(11). doi:10.1080/1448837X.2010.11464261. ISSN 1448-837X. S2CID 111504167.
- ^ "Lower Lake Margaret mini hydro: Technical fact sheet" (PDF). King - Yolande Catchment. Hydro Tasmania. Retrieved 6 July 2015.