Sao Fransisku River in Brazil with a length of 2830 km. It is the longest river that flows only in Brazil and the fourth longest in Brazil and South America. It springs from the territory of the State of Minas Gerais, flows through the territory of five states and flows into the Atlantic Ocean. It was discovered on October 4, 1501 by the Italian explorer Amerigo Vespucci, who dubbed of Francis of Assisi. Sao Fransisku has 168 flow (rivers and streams). The majority of the river is navigable. The area through which passes the river is vast and sparsely populated. However, near the river are at least eight settlements, some of which have grown to an average of major cities thanks to fruit production through irrigation water from the river.