Paraná River
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The Paraná River (Portuguese: Rio Paraná ; is a river in south-central South America, running through Brazil, Paraguay, and Argentina for some 4,880 kilometres. Among South American rivers, it is second in length only to the Amazon River. It merges with the Paraguay River and then farther downstream with the Uruguay River to form the Río de la Plata and empties into the Atlantic Ocean.
Paraná River source at the border of the states of São Paulo, Mato Grosso do Sul and Minas Gerais, in Brazil.
Confluence of the Iguazu and Parana rivers. The Triple frontier is a bit further in the background center: On the left is Paraguay, on the right Brazil, taken from Argentina.
Container ship, traveling downstream by the city of Ramallo, Argentina
Guaíra Falls
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Guairá Falls were a series of immense waterfalls on the Paraná River along the border between Paraguay and Brazil. The falls ceased to exist in 1982 when they were inundated by the impoundment of the Itaipu Dam reservoir. While published figures vary, ranging from 13,000 m3 (470,000 cu ft) per second to 50,000 m3 (1,750,000 cu ft) per second, Guaíra's flow rate was among the greatest of any then-existing falls on Earth.
The falls prior to submersion in 1982.