Australia's biggest lake has filled completely only three times since 1860

Kati Thanda-Lake Eyre sits at the lowest natural point on the Australian continent, about 15 metres below sea level, and is usually a blinding white salt pan. When monsoon floods push far enough south from Queensland's Channel Country, water can take weeks to arrive and fill its full 9,500 sq km basin — something recorded only three times since the 1860s. When it does, one of Earth's driest places briefly becomes a breeding ground for pelicans and other waterbirds.

— Wikipedia contributors, Lake Eyre — Geography of South Australia