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Mundaring Weir is the name of a dam (and historically the adjoining locality) which are located from Perth, Western Australia in the Darling Scarp. It is situated in the Mundaring locality. The dam crosses the Helena River. The town of Mundaring was gazetted in 1898, the same year as the commencement of construction of the dam.〔(General information and history of Mundaring ) www.theage.com.au (accessed 1 April 2006)〕 ==History== A soldier, Ensign Robert Dale, became the first European to explore the region in 1829. European populations did not grow significantly until construction of the dam in the late 1890s. This involved the building of a railway line from Mundaring to the Mundaring Weir site. The Irish Australian engineer C. Y. O'Connor was involved the design of a scheme that transported water to the Eastern Goldfields of Coolgardie and Kalgoorlie in the eastern part of Western Australia. The lake created by the dam was known as the Helena River Reservoir, however it is now known as Lake C.Y. O'Connor. The owner of the dam, the Water Corporation, refers to the weir as Mundaring Dam on its website, but no other authority, such as Geographic Names, or Geosciences Australia uses this term. The Mundaring Shire uses an image of the Mundaring Weir in its logo. Work commenced to raise the dam in the late 1940s, which was completed in November 1951. In the early 1970s the downstream dam from the weir—the 'Lower Helena Pumpback Dam' was constructed. It last overflowed into the Helena Valley in 1996.〔(【引用サイトリンク】title=Mundaring Dam )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Mundaring Weir」の詳細全文を読む スポンサード リンク
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