The Murray River is Australia's longest single river. The River Murray rises near Mount Kosciuszko in the Australian Alps and flows 2,530 km to the Southern Ocean, near Goolwa in South Australia. The Murray River forms part of the 3,750 km (2,330 mi) long combined Murray–Darling river system which drains most of inland Victoria, New South Wales, and southern Queensland.
Overall the catchment area is one seventh of Australia's total land mass. The Murray carries only a small fraction of the water of comparably-sized rivers in other parts of the world, and with a great annual variability of its flow.