It is located where the South Dandalup River flows out of Lake Banksiadale.

The dam was built in 1971 in response to rapid population growth in Perth, Western Australia's capital city, and a resources boom in the Pilbara.

[4] With a reservoir capacity of 137.7 gigalitres (4.86 billion cubic feet), it is the second-largest dam providing water to Perth.

Located only 6 kilometres (3.7 mi) north-east of the historic town of Dwellingup, and around 90 kilometres (56 mi) from Perth, it is a popular recreation area.

Western Australia's Water Corporation manages the area, and has provided facilities including picnic areas with gas barbecues, and a number of walk trails.