Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Tucuruí Dam (Guaraní: Tucuruí, Portuguese: Tucuruí) is a concrete gravity dam on the Tocantins River located on the Tucuruí County in Brazil. The main purpose of the dam is hydroelectric power production and navigation. It is the first large-scale hydroelectric project in the Brazilian Amazon rainforest. The maximum capacity of the 25-unit plant is 8,370 MW. Phase I construction began in 1975 and ended in 1984 while Phase II began in 1998 and is ongoing from delays. The dam was featured in the 1985 film "The Emerald Forest". The initial reconnaissance of the Tocantins River was carried out by the U.S. Bureau of Reclamation and USAID in 1964. The Amazon Energy Studies Coordination Committee was formed in 1968 and begin hydroelectric project studies in 1969. Before the committee closed, Eletrobrás commissioned further studies, called the "Tocantins Studies" on the entire Tocantins River Basin. In 1973, Brazilian President Emílio Médici was asked to assign funding for a dam on the Tocantins. Two options were available: the Tucuruí Dam and Santo Antonio Dam.