Lake Parramatta is a heritage-listed man-made reservoir and a recreational area located in North Parramatta, City of Parramatta, in the Western Sydney region of New South Wales, Australia. The masonry arch-walled dam across Hunts Creek was completed in 1856 to supply water for domestic purposes; and was operational until 1909. The dam has since been decommissioned and the lake and the surrounding nature reserve are a popular recreational area. The precinct contains a nature reserve, the largest bushland remnant surviving in the Parramatta LGA. The catchment area for Lake Parramatta is bounded by North Rocks Road, Pennant Hills Road and Hunts Creek. The height of the dam wall is and it creates a lake with a maximum storage capacity of , with a surface area of approximately . The dam was the twelfth engineered dam built since Roman times 100BC, the first in Australia, and the second arch built universally that involved calculations for its construction. Water from this dam was not reticulated until 1881 when it was required to augment the then dwindling water supply. The dam wall is listed on the New South Wales State Heritage Register in recognition of its significance relating to dam technology in Australia arch dams worldwide; and has an indicative listing on the Register of the National Estate. It was added to the New South Wales State Heritage Register on 23 March 2012. On 5 December 2012 the Governor proclaimed Lake Parramatta Reserve as a 'Wildlife Refuge’ under Section 68 of the National Parks and Wildlife Act 1974. The proclamation was in recognition of the diversity of wildlife and threatened species which occur in the reserve. Swimming in Lake Parramatta was permitted between 1920 and 1940; and after a prolonged period of closure due to poor water quality, was reopened to the public in 2015. Entry to the reserve is from Lackey Street, . History Indigenous use The traditional custodians of the land surrounding Lake Parramatta are the Burramatagal and Bidjigal clans of the Darug people, an Aboriginal kinship group of Indigenous Australians. There is evidence of Aboriginal occupation within the boundaries of Lake Parramatta Reserve in the form of remnant shelters, hand stencils, flaking scars and deposits. It is possible that other sites were inundated with the construction of the dam in the 1850s. The area was important to Aboriginal people because of the abundant fresh water and diverse range of food