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The Antequera Basin of 150 km2 is a sub-basin to Lake Poopó, located at an altitude of 3800 meters above sea level on the Bolivian high plateau. Lake Poopó is a terminal lake with high salinity and heavy pollution from centuries of extensive mining activity. The climate is semiarid-cold with an average precipitation of 450 mm/year and potential evaporation of 1700 mm/year. Almost all rain falls du
