Which lake, shared by Peru and Bolivia, is the highest navigable lake in the world?

Lake Titicaca, shared by Peru and Bolivia, is commonly recognized as the highest navigable lake in the world.

The lake lies high in the Andes at roughly 3,812 metres above sea level. Its waters cross the border between southeastern Peru and western Bolivia, and important lakeside cities include Puno in Peru and Copacabana in Bolivia. Titicaca is also South America’s largest lake by surface area and water volume.

The phrase “highest navigable lake” usually refers to a large lake used by commercial or substantial vessels. That qualification matters: many tiny mountain lakes sit at greater elevations, but they are not comparable in size or navigational use. Lake Titicaca’s waters are also slightly brackish rather than perfectly fresh.

The lake has long been central to Andean culture. According to Inca tradition, the founders Manco Cápac and Mama Ocllo emerged from its waters. Its islands, reed boats and floating Uros settlements are among the features visitors commonly associate with Titicaca.