History
Development of the Canning River as a source of water for Perth was first proposed in a report of the first Metropolitan Water Works Board of Perth in 1896. Investigation of the site began in 1897 when engineer Thomas Hodgson surveyed and proposed the dam's current location as a possible site. However despite the recommendations of further inquiries, and an extreme shortage of water in some years, government funds were not allocated for the construction of a dam until the Great Depression in the 1930s.
In 1924 a small pipehead dam was built 6 kilometres (4 mi) downstream from the present Canning Dam. It was only intended as a quick fix to the water supply problem and it soon became apparent that a major reservoir was needed, although it would be nine years before work on the current Canning Dam would begin. The new dam was completed in 1940 at a cost of AU£1.1 million. Engineer Russell Dumas designed the dam and directed most of its construction.
A further improvement was made in 1951 when a concrete-lined channel was constructed to divert stream flow from the nearby Kangaroo Gully catchment. The Canning Dam and reservoir was Perth's primary source of water until the boom growth of the city in the 1960s and the completion of Serpentine Dam in 1961. In 1975 the reservoir was connected to Perth's Integrated Water Supply Scheme by the Canning Tunnel. Prior to its opening water had flowed through the Canning Contour Channel to Gosnells.
The Canning Dam and reservoir still supplies approximately 20 percent of Perth's drinking water requirements and plays an important role in the context of the development of Perth.
The Canning reservoir is also used to store water from the newly completed Kwinana Desalination Plant. Treated water can be pumped from the plant to the reservoir through the new Forrestdale Pumping Station.
Read more about this topic: Canning Dam
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