Buckland Hill Reservoir

Buckland Hill Reservoir is situated in Mosman Park, Western Australia. The covered reservoir is the most westerly in the Perth metropolitan area and provides sweeping views across Gage Roads of Rottnest Island, Garden Island and the Port of Fremantle and mouth of the Swan River to the west and Lucky Bay and Bicton and East Fremantle to the east. The reservoir was originally filled with water from Perth's hill dams and features a water treatment plant. Most of Perth's water supply is now sourced from groundwater aquifers in the Swan Valley. Buckland Hill supplies water to the area from Fremantle and Claremont.

The reservoir was built in 1925 on top of a limestone ridge adjacent to the Buckland Hill lighthouse. In 1935 the reservoir capacity was expanded from 4 million to 14 million gallons. The Buckland Hill obelisk, believed to have been constructed as a trig point and used in the hydrographic surveys of Gage Roads and Cockburn Sound in 1872-74, became an island when the reservoir was enlarged. When the reservoir was roofed in 1983 the obelisk was moved west to its current location.

The hill was originally of a much greater height but was quarried for limestone for the nearby Mt Lyell superphoshate works, which operated from 1910 to 1969. In 1941, the reservoir shared the hill with the Australian Army's Leighton Battery. The area around the reservoir is a popular parking place.