Sydney's water supply

The Upper Nepean Scheme, consisting of the Upper Canal system, Prospect Reservoir and the Lower Canal, was built in the 1880s to supply water to Sydney. It was completed in 1888. Water from the Upper Nepean River catchment area was diverted into Prospect Reservoir through tunnels and canals known as the Upper Canal. From there it was fed to a location known as the Pipehead at Guidford via an open canal known as the Lower Canal. From 1927 the canal was progressively suplemented by pipelines. The canal continued as part of Sydney's water supply infrastructure until 1995. (Heritage, Prospect Reservoir)).