Lake Eyre

Kati Thanda-Lake Eyre is a large endorheic salt lake in northern South Australia, known for its episodic flooding and broad salt flats. It is the continent’s largest internal drainage basin and can transform from a dry playa to a shallow inland sea after heavy regional rains.

During major flood events the lake fills to varying depths and becomes an important breeding ground for waterbirds. In dry periods it forms extensive salt pans and clay flats that are traversed by specialized vehicles and used for scientific study and photography.

The lake was named by European explorers in the 19th century and carries an Aboriginal (Arabana) name in parallel; pastoral use and limited tourism have coexisted with conservation research focused on the basin’s episodic ecology.

Geographically it sits in the arid interior of South Australia, several hundred kilometres north of Adelaide, with the nearest service towns some distance away and access commonly via long outback roads.

• Hydrology: The lake is ephemeral - some years it is a dry salt pan, while in exceptional flood years it fills to form Australia's largest lake surface and attracts waterbirds.
• Lowest point: The lowest natural point in Australia lies within the lake basin, roughly 15 metres below sea level, and the area is remote with limited services.

What to See #

• South basin (Kati Thanda-Lake Eyre South): The larger southern basin, often referred to as the main Kati Thanda-Lake Eyre, is the region's lowest natural point and becomes a shallow inland sea in major floods.
• North basin (Lake Eyre North): A smaller northern basin that fills less frequently and is part of the wider endorheic lake system within the Lake Eyre Basin.