Image of the Day: Like Giant Sandtraps. Only Wetter

From above, they look like giant sandtraps on a parched golf course. But when the Darling River floods in New South Wales, Australia, it feeds a system of ephemeral freshwater lakes. The longest of these is Lake Tandou, 11.5 miles from north to south. Some of the lakes have been incorporated into an artificially regulated overflow system, which provides flood control, water storage and downstream irrigation. The lakes also serve as important wetlands supporting a rich diversity of birds.

Credit: ISS/ESA