Três Marias Reservoir, Brazil – June 4th, 200923.5S 46.4W
The Três Marias Reservoir in northwestern Minas Gerais began with the damming of the São Francisco River, formed by the construction of one of the largest earth dams in the world.
The lake, known as the “Sweet Sea of Minas”, has 21 billion square meters of water, a surface area of 1,040 square kilometers, and provides water to 8 municipalities.
The objectives were to control the flow of water of the river in the periodical floods and improve navigability; the use of hydroelectric power and the development of industry and irrigation.
Work on the dam began in 1957 and finished in January 1961, almost a world record in this type of construction. The dam is 2,700 meters long with a base of 600 and a height of 75 meters. Its plant produces 396,000 KW of power.