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Lake Margaret (Tasmania)
Lake Margaret () 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.
==Dam==
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.
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