Lake Margaret, Tasmania
| Lake Margaret | |
|---|---|
| Location | West Coast, Tasmania |
| Coordinates | 42°00′S 145°32′E / 42.000°S 145.533°ECoordinates: 42°00′S 145°32′E / 42.000°S 145.533°E |
| Type | natural lake, reservoir |
| Basin countries | Australia |
Lake Margaret (42°00′S 145°32′E / 42.000°S 145.533°E) is the name of a lake high up on the north side of Mount Sedgwick,in the West Coast Range, West Coast of Tasmania in Australia. It was dammed in the early 1900s by the Mount Lyell Mining and Railway Company. Following the closing of that company in the 1990s, the control of the dam went to Hydro Tasmania.
The dam was completed in 1918. It was the first gravity dam constructed in Tasmania and was built of concrete with conglomerate "plums". The dam was 17 metres high, had a length of 243 metres, and the wall has a volume of 6,000 cubic metres. In 1974 it was strengthened by the use of prestressed anchors and grouting of open joints.
A hydroelectric Lake Margaret Power Station and a townsite with the same name have been constructed. The purpose was to power the nearby mine and community surrounding the Mount Lyell Mining and Railway Company that was based in Queenstown. In the 1990s the HEC took over the operations.
The lake lies just east of Mount Cyril (797m), and south of Mount Geikie (1191m) in the West Coast Range. Mount Sedgwick is to the south. The Bastion (1107M) north of Mount Geikie and Farquhar Lookout (935m) define a rough line of the northern part of the catchment area.
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