The Bunyip River is a river in southern Victoria

Victoria (Australia)

Victoria is the second most populous state in Australia. Geographically the smallest mainland state, Victoria is bordered by New South Wales, South Australia, and Tasmania on Boundary Islet to the north, west and south respectively....

, Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

 to the east of Melbourne

Melbourne

Melbourne is the capital and most populous city in the state of Victoria, and the second most populous city in Australia. The Melbourne City Centre is the hub of the greater metropolitan area and the Census statistical division—of which "Melbourne" is the common name. As of June 2009, the greater...

. It flows into Western Port

Western Port

Western Port, is sometimes called "Western Port Bay", is a large tidal bay in southern Victoria, Australia opening into Bass Strait. It is the second largest bay in Victoria. Geographically, it is dominated by the two large islands; French Island and Phillip Island. Contrary to its name, it lies to...

. The river formerly flowed into the Koo-Wee-Rup Swamp, the largest wetlands in Victoria, covering an area of 40,000 hectares, before flowing into Western Port.

The Bunyip River starts below Mount Beenak at an elevation of 477m and ends at an elevation of 40.1m merging with the Tarago River. It drops around 437m over its 27.3 km length. The following creeks and rivers flow into the Bunyip River: Diamond Creek, Cannibal Creek, Back Creek, Ryson Creek and Tea Tree Creek