Clarendon Weir

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Clarendon Weir
CSIRO ScienceImage 4653 Flood waters surge over the Clarendon Weir in the Adelaide Hills South Australia 1992.jpg
Flood waters surge over the Clarendon Weir in 1992
Map of Adelaide urban area showing the reservoir is in the southeast
Map of Adelaide urban area showing the reservoir is in the southeast
Location in the Adelaide area
Country Australia
Location Adelaide
Coordinates 35°06′43″S 138°38′06″E / 35.112°S 138.635°E / -35.112; 138.635Coordinates: 35°06′43″S 138°38′06″E / 35.112°S 138.635°E / -35.112; 138.635
Purpose Water supply
Status Operational
Construction began 1894 (1894)
Opening date 1896 (1896)
Owner(s) SA Water
Dam and spillways
Impounds Onkaparinga River
Height 14.5 metres (48 ft)

The Clarendon Weir is a small weir on the Onkaparinga River, near Adelaide in South Australia. Built in 1894–96 as part of the early Onkaparinga Water Scheme, the weir was designed to pool water from the Mount Bold Reservoir, on the Onkaparinga, which is often boosted with water from the River Murray. From the weir water is directed onwards to Happy Valley Reservoir in the Field River catchment through pipeline. The water is used to supply the majority of the Adelaide region's water needs. The Clarendon Weir wall, originally constructed with large blocks of Macclesfield marble, was raised to its current height of 14.5 metres (48 ft) in the mid-1960s.

Clarendon Weir

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