2-713: 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 , some distance east in the same valley, in the Darling Range in Western Australia . The suburb Helena Valley is a few kilometres downstream of the dam. The dam was first constructed in the early 1970s, on the Helena River at
4-505: A location on the southern boundary of the suburb of Darlington . 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. 31°56′31″S 116°04′35″E / 31.942083°S 116.076509°E / -31.942083; 116.076509 Goldfields Water Supply Too Many Requests If you report this error to
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