The Clarendon Weir is a weir in the Australian state of South Australia, located on the Onkaparinga River in the suburb of Clarendon, about south of the Adelaide city centre. Built in 1894–96 as a solution to Adelaide's sewer problems, the weir supplied water to the Adelaide plains to flush the sewers as there simply was not enough water to keep the population healthy. A tunnel was built with ponies and carts through the hills to Happy Valley where a reservoir was built. The water was pumped from the Weir through the tunnel to Happy Valley Reservoir. There is no other catchment for this reservoir. Mt Bold Reservoir was added in the 1940s to again supplement Adelaide's water supply with the Clarendon Weir acting as a holding dam down stream. The water is used to supply the majority of the Adelaide region's water needs. In the mid-1960s, the wall of the Clarendon Weir, originally constructed with large blocks of

Macclesfield Macclesfield is a market town and civil parish in the unitary authority of Cheshire East in Cheshire, England. It is located on the River Bollin in the east of the county, on the edge of the Cheshire Plain, with Macclesfield Forest to its east ...

marble, was raised from to its current height of . The weir was listed on the former

Register of the National Estate The Register of the National Estate was a heritage register that listed natural and cultural heritage places in Australia that was closed in 2007. Phasing out began in 2003, when the Australian National Heritage List and the Commonwealth Heritag ...

, and has been listed as a state heritage place on the South Australian Heritage Register since 8 November 1984. Clarendon Weir panorama 04

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External links

Postcards: ClarendonClarendon Weir (youtube)
Dams completed in 1896 Weirs Dams in South Australia South Australian Heritage Register South Australian places listed on the defunct Register of the National Estate {{SouthAustralia-struct-stub

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External links