Completed in 1907, Cataract Dam became the first and oldest dam in the Upper Nepean River. Water supply system has a height of up to 56 meters and managed to keep the water supply capacity of up to 130 square kilometers. It was formed up to 850 acre lake with a maximum capacity of 94.300 megaliter. Cataract is the river water flows from north Appin, Wilton in the West, until of Nepean near Douglas Park.

Cataract Dam entered the fourth largest dam across Australia has a magnificent view. Was far from the hustle and bustle of Sydney with the blue waters and green trees pooled around him. Here there is a park that can be used as a picnic area with tables up to 30 the number of BBQ area, 40 sets of desks and chairs, up to 3 pieces of clean public toilets. Visitors will find a variety of fauna and flora species coexist here.

In architecture, Cataract Dam drainage board has the ancient architecture. Not only that, the construction is also still looks the same as first built first. Seem primitive and classical. Concrete walls are made of sand stone monolitikum combined with modern concrete.