Woronora Dam, Heritage-listed concrete gravity dam in New South Wales, Australia
Woronora Dam is a concrete gravity structure that crosses the Woronora River to supply water to Sydney's southern communities. The building stretches across a considerable distance, rises to a significant height, and holds a large volume of water behind it.
Construction started in 1927 as Sydney's fifth water supply project, but was paused during economic hardship and finally finished in 1941. This extended timeline shaped how water resources were developed for the region over following decades.
The structure displays Inter-war architectural style that blends engineering with the natural sandstone landscape of the river valley. Walking along the dam, visitors notice how the building sits within rather than dominates the surrounding terrain.
The site is freely accessible and visitors can view the structure and explore the surroundings at any time. Plan enough time to walk around the building and check local weather conditions before heading out.
The structure features an unusual curved overflow channel system designed to handle massive water flow during flood events. This engineering feature is often overlooked by visitors but shows how the building manages extreme water conditions.
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