Australian Government, Geoscience Australia

Updated: 09 October 2007

Longest Rivers

Australia's Longest Rivers

NAME STATE LENGTH (km) approximate
Murray River New South Wales / South Australia 2520
Murrumbidgee River New South Wales / Australian Capital Territory 1575
Darling River (from the Murray River to Culgoa River) New South Wales 1390
Lachlan River New South Wales 1370


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Longest River by State/Territory

STATE/TERRITORY NAME LENGTH (km) approximate
New South Wales Murray River 1870
Queensland Flinders River 840
Western Australia Gascoyne River 760
South Australia Murray River 650
Victoria Goulburn River 566
Northern Territory Victoria 560
Tasmania South Esk River 214
Australian Capital Territory Murrumbidgee 51


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Longest Continuous River System

The Murray-Darling River systemThe Murray River and its tributary, the Darling River, are the main rivers in the Murray-Darling River Basin. This drainage basin comprises the major part of the interior lowlands of Australia, covering more than one million square kilometres, or about 14 per cent of Australia.

The Darling River flows south from the junction of the Culgoa and Barwon rivers. Although the Culgoa is longer than the Barwon, the source of the Darling is generally agreed to be the Barwon River as it has the greater volume of water. The headwaters of the Darling can be traced to the MacIntyre River, which starts in the Great Dividing Range, and forms part of the border between NSW and Queensland. It eventually flows south into the Barwon. The Barwon-MacIntyre section is sometimes referred to as the Upper Darling. When measured from its source in Queensland to its mouth on the coast south-east of Adelaide, the Murray-Darling river system is 3370 kilometres long, about half the length of the world's longest river, the Nile.


NAME STATE LENGTH (km)
Longest Continuous River System - Murray-Darling River System Queensland / New South Wales / South Australia 3370
Longest River - Murray River New South Wales / South Australia 2520
Darling (from the Murray River to Culgoa River) New South Wales 1390
Upper Darling (Barwon and MacIntyre Rivers) New South Wales / Queensland 1140
Culgoa and Condamine Rivers New South Wales / Queensland 1350

Source: Geoscience Australia GEODATA TOPO-250K database.
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