The Lower Helena Pipehead Dam, also known as the Lower Helena Pumpback Dam, catchment and pipeline are a part of the Goldfields Water Supply operations at

Mundaring Weir Mundaring Weir is a dam (and historically the adjoining locality) located from Perth, Western Australia in the Darling Scarp. The dam and reservoir form the boundary between the suburbs of Reservoir and Sawyers Valley. The dam impounds the Hel ...

, some distance east in the same valley, in the

Darling Range The Darling Scarp, also referred to as the Darling Range or Darling Ranges, is a low escarpment running north–south to the east of the Swan Coastal Plain and Perth, Western Australia. The escarpment extends generally north of Bindoon, to th ...

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...

. The suburb

Helena Valley Helena may refer to: People *Helena (given name), a given name (including a list of people and characters with the name) *Katri Helena (born 1945), Finnish singer *Helena, mother of Constantine I Places Greece * Helena (island) Guyana * ...

is a few kilometres downstream of the dam. The dam was first constructed in the early 1970s, on the

Helena River The Helena River is a tributary of the Swan River in Western Australia. The river rises in country east of Mount Dale and flows north-west to Mundaring Weir, where it is dammed. It then flows west until it reaches the Darling Scarp. It passes ...

at a location on the southern boundary of the suburb of

Darlington, Western Australia Darlington, Western Australia, is a locality in the Shire of Mundaring on the Darling Scarp, bisected by Nyaania Creek and north of the Helena River. Location About one kilometre to the west of Darlington and lower on the Darling Scarp lies ...

. By the 1980s and 1990s, the catchment and water quality saw a number of studies and reports. Into the 2000s, further research continued, and the upper parts of the catchment area were being considered as restricted activity zones.

Notes

{{coord, -31.942083, 116.076509, display=title Helena River Dams in Western Australia Goldfields Water Supply Scheme