Cascade Dams

Cascade Dams

Located about 100 kilometres west of Sydney, the Upper, Middle and Lower Cascade dams are on Cascade Creek, just north of Katoomba in the Blue Mountains.

Together with the Greaves Creek and Lake Medlow dams, the three Cascade dams supply the Cascade water filtration plant, which provides water to the middle and upper Blue Mountains. These dams and the water filtration plant are not open to the public.

Statistics

Upper Cascade Dam
Height: 30 m
Length: 247 metres

Total operating capacity: 1,791 ML

Lake: 23 ha
Catchment: 2 square kilometres

Middle Cascade Dam
Height: 15 m
Length: 105 metres

Total operating capacity: 167 ML

Lake: 3 ha
Catchment: 2 square kilometres

Lower Cascade Dam
Height: 26 m
Length: 128 metres

Total operating capacity: 305 ML

Lake: 3 ha
Catchment: 3 square kilometres

Cascade dams history

The first dam, Middle Cascade Dam, was built in 1908 and upgraded in 1915. A concrete arch dam, its lake is the smallest of the three Cascades dams.

Lower Cascade Dam was completed in 1926. It lies downstream of the other Cascade dams. It is an earthfill embankment dam with a central concrete core.

Upper Cascade Dam was completed in 1938. Another earthfill embankment dam with a central concrete core, its lake is the largest of the three Cascades dams.

The completion of the Cascades dams was a significant step in providing a reliable water supply for the upper and middle Blue Mountains.

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Saturday 24 July
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2,462,667 ML
2,581,850 ML
9,217 ML
1,317 ML
14,647 ML
Saturday 24 July