The Hope Valley Reservoir is a 2840 megalitre service reservoir

Reservoir

A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

 in Hope Valley, South Australia

Hope Valley, South Australia

-History:Hope Valley was more the result of random settlement than of actual town planning. Jacob Pitman first purchased an section in 1839. In the early 1840s he sold a few allotments. One such allotment was purchased by William Holden in 1841, on which he set up a butcher and general store...

, a suburb of Adelaide

Adelaide

Adelaide is the capital city of South Australia and the fifth-largest city in Australia. Adelaide has an estimated population of more than 1.2 million...

, South Australia.

When completed in 1873 it was the second reservoir constructed in Adelaide; it is the oldest still in use in South Australia. It covers 52 hectares (128 acre) and is retained behind a 950 metres (3,117 ft) long clay-cored earth wall. Water is transferred from the River Torrens

River Torrens

The River Torrens is the most significant river of the Adelaide Plains and was one of the reasons for the siting of the city of Adelaide, capital of South Australia. It flows from its source in the Adelaide Hills near Mount Pleasant, across the Adelaide Plains, past the city centre and empties...

 via a tunnel and aqueduct. The river is also used to transfer water from the Kangaroo Creek

Kangaroo Creek Reservoir

Kangaroo Creek Reservoir is a 19,160 megalitre artificial water storage reservoir in the Adelaide Hills, South Australia. It was built from 1966 to 1969, by damming the River Torrens east of Cudlee Creek. The stored water is used to maintain the Hope Valley Reservoir's level via discharge...

 and Millbrook

Millbrook Reservoir

Millbrook Reservoir is a 16,000 Megalitre artificial water storage reservoir in the Adelaide Hills, South Australia. It was built during from 1914–1918 during World War I to control water flows in the upper River Torrens and provide gravity fed water to Adelaide's eastern suburbs.It is...

reservoirs.