South-east corner Pacific Highway & Mowbray Road, Artarmon
Constructed in 1888, they were the first reservoirs erected on the north side of the harbour and are still in use. They are 370 feet above sea level. Each tank holds seven megalitres of water. When built they supplied the whole of the North Shore east of the Lane Cove River including Mosman. Water was carried from the Ryde Pumping Station through a rising main crossing the Lane Cove River via a pipe suspension bridge. A third much larger reservoir was built behind them in 1966, holding 45 megalitres.