- Who
- Kati Thanda/Lake Eyre
- What
- 9,690 square kilometre(s)
- Where
- Australien ()
- When
- 1974
Ephemeral lakes contain water only sometimes, and not even following regular seasons. Kati Thanda-Lake Eyre in South Australia is an endorheic system, meaning it has no outlets other than evaporation for its water. It usually contains little or no water but occasionally floods due to heavy monsoon rains in central Queensland. At its fullest, the Australian Government's Geoscience department estimates that the surface area of Kati Thanda-Lake Eyre can reach as large as 9,690 square kilometres (3,740 square miles).
