Lake Margaret (Tasmania)
| Lake Margaret | ||
|---|---|---|
Annual generation 48 GWh (170 TJ) | | |
| [1][2][3] | ||
Lake Margaret is a concrete-faced gravity dam with an uncontrolled spillway across the Yolande River, located on the north side of Mount Sedgwick, in the West Coast Range, West Coast of Tasmania, Australia.
The impounded reservoir is also called Lake Margaret.[1]
The dam was constructed in 1918 by the
Features and location
The dam, called Lake Margaret, was completed in 1918 and it was the first gravity dam constructed in Tasmania. It was built of concrete with conglomerate "plums". The dam wall is 17 metres (56 ft) high and is 243 metres (797 ft) long and the concrete-faced dam wall has a volume of 6,000 cubic metres (210,000 cu ft). The uncontrolled spillway has a capacity of 29
The Lake Margaret dam impounds the Yolande River, which also is the outflow from the dam. Further west the Yolande joins with the Langdon River, another West Coast Range west flowing river, to join with the Henty River west of the Zeehan Highway.
Reservoir
The 170-hectare (420-acre) reservoir,
Numerous smaller lakes – some named and some not – lie above the location of the Lake Margaret. The vesting of the catchment with the current operator of the hydro electric power station, makes the two feeder parts of the catchment specific Hydro land in contrast to the surrounding landscape which is either in the Tyndall Regional Reserve or the Lake Beatrice Conservation Area.[4][5]
The two southern feeder Hydro reserves start from the slopes of Mount Sedgwick, the westerly from Lake Barnables (less than one kilometre (zero point six two miles) east of Lake Margaret), then to Lake Phillip. The eastern feeder starts at an unnamed lake to Lake Polycarp, Lake Peter, Lake Paul, Lake Apollos, and then to Lake Phillip. The northern feeder starts from Lake Monica, Lake Myra, then Lake Magdala, situated at 782 metres (2,566 ft) AHD , Lake Martha, at 757 metres (2,484 ft), and Lake Mary, at 732 metres (2,402 ft), before flowing into Lake Margaret.[4][5]
The larger lower altitude natural lake of the area lies to the south east side of Mount Sedgwick and is known as Lake Beatrice.
Power scheme
The initial purpose of Lake Margaret when it was constructed by the Mount Lyell Mining and Railway Company was to generate hydroelectric power for the
In 1931 a
See also
- List of reservoirs and dams in Tasmania
- List of lakes in Tasmania
- List of power stations in Tasmania
References
- ^ a b c "Register of Large Dams in Australia" (Excel (requires download)). The Australian National Committee on Large Dams Incorporated. 2012. Retrieved 25 May 2018.
- ^ a b c d "King – Yolande". Energy: Our power stations. Hydro Tasmania. Retrieved 25 May 2018.
- ^ a b "Map of Lake Margaret, TAS". Bonzle Digital Atlas of Australia. n.d. Retrieved 25 May 2018.
- ^ a b "Gormanston" (Map). Tasmap. 2001. Sheet Sheet 3834.
- ^ a b "Tyndall" (Map). Tasmap. 2007. Sheet Sheet 3835.
Further reading
- Cole, Bruce (ed.). Dam Technology in Australia 1850-1999. Australian National Committee on Large Dams Inc.
- ISBN 0-7246-2265-9.
- Whitham, Charles (2003). Western Tasmania – A land of riches and beauty (Reprint 2003 ed.). Queenstown: Municipality of Queenstown.
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| Man-made reservoirs | |
