Australia:
- Murray River: The longest river in Australia, stretching over 2,375 kilometers (1,476 miles) through the states of New South Wales, Victoria, and South Australia.
- Darling River: A major tributary of the Murray River, covering a distance of approximately 1,470 kilometers (913 miles) through New South Wales.
- Cooper Creek: A river system situated in the interior of Australia, comprising the Barcoo, Thomson, and Cooper rivers.
Papua New Guinea:
- Sepik River: The longest river in Papua New Guinea, running over 1,126 kilometers (699 miles) from the central Highlands to the Bismarck Sea.
- Fly River: Another significant river in Papua New Guinea, covering approximately 1,050 kilometers (652 miles) and known for its extensive wetlands and rainforest habitats.
New Zealand:
- Waikato River: The longest river in New Zealand, extending around 425 kilometers (264 miles) from its source at Lake Taupo to its outlet in the Tasman Sea.
- Clutha River: A major river located in the South Island of New Zealand, covering approximately 320 kilometers (199 miles) from the Southern Alps to the Pacific Ocean.
These rivers play a vital role in supporting ecosystems, providing water resources, and facilitating navigation and economic activities within the various countries and regions of Oceania.