Millbrook Reservoir is a 16,000-megalitre artificial water storage

reservoir A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation. Reservoirs are created by controlling a watercourse that drains an existing body of wa ...

in the

Adelaide Hills The Adelaide Hills region is located in the southern Mount Lofty Ranges east of the city of Adelaide in the state of South Australia. The largest town in the area, Mount Barker, South Australia, Mount Barker, is one of Australia's fastest-growi ...

South Australia South Australia (commonly abbreviated as SA) is a States and territories of Australia, state in the southern central part of Australia. With a total land area of , it is the fourth-largest of Australia's states and territories by area, which in ...

. It was built from 1914 to 1918 during

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

to control water flows in the upper

River Torrens The River Torrens (Karrawirra Parri / Karrawirraparri) is the most significant river of the Adelaide Plains. It was one of the main reasons for the siting of the city of Adelaide, capital of South Australia. It flows from its source in the Ad ...

and provide gravity-fed water to

Adelaide Adelaide ( , ; ) is the list of Australian capital cities, capital and most populous city of South Australia, as well as the list of cities in Australia by population, fifth-most populous city in Australia. The name "Adelaide" may refer to ei ...

's eastern suburbs. It is named after the small town of Millbrook, demolished and removed during construction. During the 1970s, the nearby town of Chain of Ponds was also removed to prevent

pollution Pollution is the introduction of contaminants into the natural environment that cause harm. Pollution can take the form of any substance (solid, liquid, or gas) or energy (such as radioactivity, heat, sound, or light). Pollutants, the component ...

of the reservoir's water. Millbrook covers behind a clay-cored earth dam. It lies on Chain of Ponds creek, a tributary of the River Torrens. Water in the reservoir is piped from a

weir A weir or low-head dam is a barrier across the width of a river that alters the flow characteristics of water and usually results in a change in the height of the water level. Weirs are also used to control the flow of water for outlets of l ...

near Gumeracha but it is also used to balance storage of River Murray water via the Mannum–Adelaide pipeline. It also captures approximately half of the Torrens' water flow. John Tippett named the town of Millbrook in the late 19th century after Millbrook in his native

Cornwall Cornwall (; or ) is a Ceremonial counties of England, ceremonial county in South West England. It is also one of the Celtic nations and the homeland of the Cornish people. The county is bordered by the Atlantic Ocean to the north and west, ...

References

Dams completed in 1918 Embankment dams Earth-filled dams Dams in South Australia Reservoirs in South Australia {{adelaide-stub