Furnas Dam, c.390 ft (120 m) high, at the junction of the Rio Grande and Sapucaí rivers, SE Brazil, in Minas Gerais state; completed 1962. It has a 620-sq mi (1,606-sq km) reservoir. It includes large hydroelectric facilities and is the center of an extensive regional electrical grid serving the industrial centers of São Paulo, Rio de Janeiro, and Belo Horizonte.
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