The Myponga Reservoir is a 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 South Australia

South Australia

South Australia is a state of Australia in the southern central part of the country. It covers some of the most arid parts of the continent; with a total land area of , it is the fourth largest of Australia's six states and two territories.South Australia shares borders with all of the mainland...

, located about 60 km south 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...

 near the town of Myponga

Myponga, South Australia

Myponga is a settlement in South Australia. At the 2006 census, Myponga had a population of 540.-References:One of the first Pioneer Families to Settle the area, was the Family of CON POLDEN & MARY WINDSOR along with their children from Wiltshire SOUTH/WEST ENGLAND.-See also:*Myponga Reservoir...

. The reservoir is fed by the Myponga River and other rivers in the Myponga catchment

Drainage basin

A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean...

.
It provides about 5% of the City of Adelaide

City of Adelaide

The City of Adelaide is a local government area in the metropolitan area of Adelaide, South Australia. It covers the original Adelaide city centre settlement, , North Adelaide, and the Adelaide Park Lands which surround North Adelaide and the city centre.Established in 1840, the organisation now...

's water supply and is the main source of filtered water for southern metropolitan Adelaide and the southern coast area. Plans to utilise the Myponga River catchment as a major storage area were made in 1945. Construction began in 1957 and was completed in 1962, flooding what was from 1840 known as "Lovely Valley". Prior to the construction of the Myponga Water Treatment Plant in 1993, water from Myponga was used to supplement that of Happy Valley Reservoir

Happy Valley Reservoir

Constructed when the total population of Adelaide numbered 315,200 the Happy Valley Reservoir now supplies over a half a million people, from Adelaide's southern extent to the city-centre.-Construction:...

.

The reservoir was searched for the bodies of the Beaumont children

Beaumont children disappearance

Jane Nartare Beaumont , Arnna Kathleen Beaumont , and Grant Ellis Beaumont were three siblings collectively known as The Beaumont Children who disappeared from Glenelg Beach near Adelaide, South Australia on Australia Day 1966.Their case resulted in one of the largest police investigations in...

, Joanne Ratcliffe, and Kirsty Gordon in early 1990, based on evidence against Bevan Spencer von Einem

Bevan Spencer von Einem

Bevan Spencer von Einem , also known as Bevan von Einem , is a convicted child murderer from Adelaide, South Australia...

delivered by "Mr. B", a witness. No remains were found there.

• Capacity: 26,800 megalitres
• Length of wall: 226m
• Height of wall: 49m
• Type of wall: Concrete arch
• Area of water spread: 2.8 km²