Wahroonga Reservoir, Heritage-listed water reservoir in Wahroonga, New South Wales, Australia.
Wahroonga Reservoir is a cylindrical elevated steel tank that sits on an eight-legged steel girder frame at the corner of Pacific Highway and Woonona Avenue. It holds around 1.1 million liters of water and operates as part of the broader water supply system serving the local area.
The Metropolitan Board of Water Supply and Sewerage built this tank in 1915 to meet growing water needs in Sydney's northern suburbs. This project was a key step in expanding the water network across the region during a period of rapid residential growth.
The structure displays early 20th-century craftsmanship through its riveted steel connections and ingenious support design that you can see up close. The visible metalwork shows how engineers of that time solved the challenge of holding large quantities of water above ground.
The site is visible and accessible from the nearby sidewalk during daytime, though it sits at a busy street corner. Visitors get the best view from across the street where they can see the full structure without stepping into traffic.
Cypress, jacaranda, and Illawarra flame trees surround this industrial structure, creating an unexpected visual contrast that surprises many visitors. The vegetation softens the hard angles of the metal framework and adds color throughout the seasons.
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