Wanderlust World Wanderlust World The Murray River, Australia's longest river at over 2,500 kilometers (1,550 miles), flows predominantly west to east across the continent's southeast. Its journey from the Snowy Mountains to the Southern Ocean shapes landscapes, ecosystems, and human settlements along its course.
Headwaters: The Murray rises in the Australian Alps, specifically the Snowy Mountains of New South Wales, where snowmelt feeds alpine streams. The river's official source is near Mount Kosciuszko, Australia's highest peak.
Upper Reaches: Flowing northwest initially, it passes through alpine valleys, then turns westward through Lake Hume (formed by Hume Dam near Albury-Wodonga), a major irrigation and flood control reservoir.
Middle Course: The river meanders west-northwest across the Riverina plains, forming the New South Wales–Victoria border for 1,880 km. Major tributaries—the Murrumbidgee, Goulburn, and Campaspe—join here, supporting intensive agriculture (rice, citrus, dairy, viticulture) in the Murray-Darling Basin, Australia's food bowl.
Lower Reaches: In South Australia, the river turns southward, passing through Lake Alexandrina and Lake Albert before reaching the Murray Mouth at the Coorong, a coastal lagoon system opening to the Southern Ocean (often mistakenly called the Indian Ocean).
The Murray-Darling Basin covers 14% of Australia's landmass and produces 40% of its agricultural output. The river sustains river red gum forests, wetlands of international importance (Ramsar sites), and endangered species like the Murray cod and southern bell frog.
Over-allocation of water for irrigation, climate change-driven drought, salinity, and invasive species (carp) threaten the river's health. The Murray-Darling Basin Plan (2012) seeks to balance environmental flows with agricultural needs—a contentious, ongoing process.
Understanding the Murray's west-to-east (then southward) flow reveals how this river stitches together Australia's southeast—ecologically, economically, and culturally.