Cumberland Plain
The Cumberland Plain is a relatively flat region lying to the south and west of Sydney CBD in New South Wales, Australia. Cumberland Basin is the preferred physiographic and geological term for the low-lying plain of the Permian-Triassic Sydney Basin found between Sydney and the Blue Mountains.
The Cumberland Plain has an area of roughly 2750 km2. It extends from 10 kilometres north of Windsor in the north, to Picton in the south; and from the Nepean-Hawkesbury River in the west almost to Sydney City's Inner West in the east. Much of the Sydney metropolitan area is located on the Plain. The Hornsby Plateau is located to the north and is dissected by steep valleys.
The plain takes its name from Cumberland County, in which it is situated, one of the cadastral land divisions of New South Wales. The name Cumberland was conferred on the County by Governor Phillip in honour of Ernest Augustus, Duke of Cumberland.
The Cumberland Plain is located within the local government areas of City of Blacktown, Burwood Council, Camden Council, City of Campbelltown, City of Canada Bay, Canterbury-Bankstown Council, Cumberland Council, City of Fairfield, Georges River Council, City of Hawkesbury, Hornsby Shire, Inner West Council, City of Liverpool, City of Parramatta Council, City of Penrith, City of Ryde, Municipality of Strathfield, The Hills Shire, Wingecarribee Shire and Wollondilly Shire. The Hawkesbury, Nepean, Parramatta and Cooks rivers run through parts of the plain.
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