Silverdale is a small town in New South Wales, Australia, in Wollondilly Shire. Approximately 30 minutes from the city of Camden, Silverdale is close to the historic township of Warragamba, and the main water supply for Sydney, Warragamba Dam. The town's development increased with the construction of the dam. Silverdale is remarkably isolated from the increasing urbanisation of the Penrith City area, although the new housing estates are an example of increasing development in the area.