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出典:『Wikipedia』 (2011/08/04 13:08 UTC 版)

英語による解説

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The Canning Contour Channel is a 16 kilometres (9.9 mi) series of made-made concrete channels and steel and cast iron pipelines in the Darling Scarp in Western Australia constructed between July 1935 and December 1936. The project was a Depression era public works scheme to carry potable water from just below Canning Dam through the hills around and above Roleystone and Kelmscott to a screening, flouridation and pumping station near Gosnells by following the natural contours of the Canning Valley—hence it was entirely gravity fed. Where a tributary valley needed to be crossed, suspended or siphoning pipelines were used. From Gosnells the water entered the city's pipeline distribution system.