predominantly rural region, south-central New South Wales, Australia. Occupying 26,509 square miles (68,658 square km), it is bounded on the north and northwest by the Lachlan and Murrumbidgee rivers, on the south by the Murray River, and on the east by an imaginary line connecting the towns of Condobolin, Junee, and Albury. Most of the Riverina comprises level alluvial plains laced with meandering streams that flood periodically. Only in the east does the terrain become hilly. The soils are generally fertile and the climate mild. Average annual rainfall varies from 12 inches (300 mm) in the northwest to 25 inches (635 mm) in the southeast
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