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Gwydir River, New South Wales, 2399, Australia (-29.86292 150.57690)
Over its entire distance, the Gwydir River falls around 616 metres (2,021 ft) in elevation from its headwaters, at an elevation of 760 metres (2,490 ft) above sea level to when it joins the Barwon River at an elevation of 144 metres (472 ft) above sea level. The Gwydir River's total length is 488 kilometres (303 mi), in which space and thirty-four tributaries feed into it over its entire length; including the Horton River, Warialda Creek, Laura Creek and Moredun Creek.
Sydney Harbour National Park, Mosman, Sydney, Mosman Municipal Council, Lower North Shore, New South Wales, 2088, Australia (-33.81288 151.29056)
Coordinates: -33.86395 151.15262 -33.80192 151.30741 - Minimum elevation: 0 m - Maximum elevation: 172 m - Average elevation: 35 m
Border Ranges National Park, Grevillia, Tweed Shire Council, New South Wales, Australia (-28.40742 153.06772)
Coordinates: -28.50514 152.70902 -28.30961 153.15436 - Minimum elevation: 27 m - Maximum elevation: 1,331 m - Average elevation: 313 m