Finke River: ancient intermittent river of central Australia

Course, hydrology and connected basins

The river is conventionally said to form where Davenport and Ormiston creeks meet just north of Glen Helen and then runs generally south-west. Under ordinary conditions the channel is discontinuous, but in exceptional flood events the Finke can join the Macumba and other channels and deliver water as far as Lake Eyre, a journey of about 750 km. At its terminus the river approaches the eastern margin of the Simpson Desert and the broader drainage reaches northern South Australia. Major named tributaries and feeder streams include Ellery Creek, the Palmer River and the Hugh River.

Geology and age

Geologically the Finke follows an ancient alignment across some of Australia’s oldest rocks. Sections of its channel display deeply incised meanders and gorges carved into Precambrian and Palaeozoic sediments, which has led to the river frequently being described as one of the world’s oldest river systems. This antiquity is apparent in the landscape of bedrock gorges and isolated palm-filled pockets such as Palm Valley in Finke Gorge National Park.

Cultural and historical significance

The river corridor has been important to local Aboriginal peoples for thousands of years; many of its waterholes and features are part of living cultural landscapes and Dreaming stories. In parts of the Northern Territory the Finke is known by the Indigenous name Larapinta. European exploration of the region reached the river in the 19th century; the explorer John McDouall Stuart recorded the watercourse in 1860 and named it for William Finke, a backer from Adelaide who helped fund expeditions.

Ecology, protected areas and human use

Despite its arid setting the Finke supports a variety of plants and animals concentrated at permanent and semi-permanent pools. Riparian woodlands, isolated stands of palms, fish, birds and reptiles all depend on the waterholes in dry seasons. Conservation reserves such as West MacDonnell and Finke Gorge National Parks protect many of the river’s striking landforms and habitats and provide opportunities for regulated tourism, walking and cultural interpretation. The river’s intermittent nature means it has limited use for agriculture, but its scenic gorges and cultural sites make it a focus for visitors travelling along routes like Larapinta Drive and the Larapinta walking trail.

Notable features and quick facts

• Length: about 600 km from the ranges toward the Simpson Desert.
• Hydrology: usually a chain of waterholes; becomes a through-flowing river only in rare floods.
• Geology: flows over very old rock; contains deeply incised meanders and gorges.
• Cultural names: commonly called Larapinta in parts of the Northern Territory.
• Protected areas: flows through West MacDonnell and Finke Gorge National Parks.