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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Woronora Dam ： ウィキペディア英語版 Woronora Dam The Woronora Dam is a concrete gravity dam with an uncontrolled serpentine spillway across the Woronora River, located south of Greater Metropolitan Sydney, in New South Wales, Australia. The principal purpose of the dam is for potable water supply for Sydney's southern suburbs and the northern suburbs of the Illawarra region. The impounded reservoir is also called Woronora Dam and is sometimes incorrectly called Lake Woronora. ==History== Water was first supplied to the Sutherland Shire in 1911 when a pipe was laid from Penshurst Reservoir across Georges River at Tom Ugly's Point to Miranda. In 1920 a scheme to supply water from the Woronora River to Sutherland and Cronulla was rejected. It was resurrected five years later when the then Metropolitan Water Sewerage and Drainage Board became the sole constructing authority for water supply works in the metropolitan area. The scheme involved the construction of a dam, which could be increased in size if necessary, on the Woronora River, about upstream of its junction with the Georges River.〔 Construction of the dam began in 1927, the fifth dam built as part of Sydney's water supply.〔 As forecast, the size of the dam wall had to be increased two years later. Workers' accommodation was spartan but functional with small bungalows built of fibrolite and placed on brick or concrete piers on the sloping ground. In 1930 The Depression intervened, suspending work on the dam. The men were forced to look for work further afield, even interstate, often leaving their families behind to live on the Woronora site. Some families had strong ties to the history of Sydney's dams, moving from the Nepean Dam project to Woronora, and then onto Warragamba. Other workers on Woronora Dam were former coal miners from nearby Helensburgh. Late in 1931 the ''Unemployment Relief Account'' released funds to build a weir to provide water to the Sutherland-Cronulla area and four years later, work resumed on the dam itself.〔 Woronora Dam was completed in 1941 at a cost of about 13 million. The dam is the only one of Sydney's water supply dams which is not part of the Upper Nepean/Warragamba/Shoalhaven interconnected system. The dam was built with the objective of supplementing Sydney's water supply whilst the much larger Warragamba Dam was constructed.〔 Six of the cottages were retained for on-site maintenance staff housing while the rest of Woronora township site was turned into picnic and recreational areas.〔 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「Woronora Dam」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.