The Blanca Lagoon is a body of surface water located on the border between the Department of Potosí, Bolivia, and the Antofagasta Region, Chile. It is the equilibrium point of a large endorheic basin that is bordered to the west by the Laguna Verde basin (Bolivia) (this basin has its own Laguna Blanca (Bolivia)), to the east and south by the Salar de Tara basin and to the north by other basins in Bolivia.