Poopó Lake (Spanish: Lago Poopó) is a large saline lake located in a shallow depression in the Altiplano Mountains in Bolivia at an altitude of approximately 3,700 metres. Because the lake is long and wide (90 km by 32 km) it makes up the eastern half of the Oruro Department, a mining region in southwest Bolivia. The permanent part of the lake body covers approximately 1,000 km2.