At high water mark, the lake covers 5,850 hectares of the 8,300 hectare park. Ross Lake (470 hectares) and a 2.5 kilometre stretch of Outlet Creek were added to the park in 1991 and some former areas of the park were attached to Wyperfeld National Park.
The lake generally fills and empties on a 20-year cycle, the longest dry period on record being 27 years. It last filled in 1974 an ...
