Long Island (New South Wales)

Long Island is an elongated island of 73 hectares in the Hawkesbury River, about 50 kilometres (31 mi) north of the Sydney central business district,New South Wales, Australia. It is joined to the mainland at its south eastern edge by the railway causeway across Sandbrook Inlet. At the other end of this causeway is the Sydney suburb of Brooklyn in Hornsby Shire, to which Long Island belongs.^[1]

Other islands in the Hawkesbury River include Dangar Island, Spectacle Island, Milson Island, Peat Island and Lion Island.

As with Spectacle Island and Lion Island, Long Island is a nature reserve (73ha, notified in 1972), which means it is illegal to visit without permission from the N.S.W. Office of Environment and Heritage. The New South Wales Parks and Wildlife Service runs very infrequent guided tours of the island, for those who are interested in its flora, fauna, geology and Aboriginal history.

Some of the best views of Long Island are from Lloyd Trigonometrical station, and Tipper's Lookout, both located to the west in nearby Muogamarra Nature Reserve. From these vantage points, it is possible to look down along the length of the island and see the mouth of the Hawkesbury River and Broken Bay in the far distance.

Long Island was added to the Australian National Heritage List in December 2006.^[2]