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Río de la Plata Basin

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The Río de la Plata basin ( Spanish : Cuenca del Plata , Portuguese : Bacia do Prata ), more often called the River Plate basin in scholarly writings, sometimes called the Platine basin or Platine region , is the 3,170,000-square-kilometre (1,220,000 sq mi) hydrographical area in South America that drains to the Río de la Plata . It includes areas of southeastern Bolivia , southern and central Brazil , the entire country of Paraguay , most of Uruguay , and northern Argentina . Making up about one fourth of the continent's surface, it is the second largest drainage basin in South America (after the Amazon basin ) and one of the largest in the world.

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33-1204: The main rivers of the La Plata basin are the Paraná River , the Paraguay River (the Paraná's main tributary), and the Uruguay River . The La Plata basin is bounded by the Brazilian Highlands to the north, the Andes Mountains to the west, and Patagonia to the south. The watershed extends mostly northward from the source of the Río de la Plata for roughly 2,400 kilometres (1,500 mi), as far as Brasília and Cuiabá in Brazil and Sucre in Bolivia, spanning latitudes between 14 and 37 degrees south and longitudes between 43 and 67 degrees west. The Paraná River, La Plata's largest tributary,

66-427: A joint project between Paraguay and Argentina. The massive reservoir formed by the project has been the source of a number of problems for people living along the river, most notably the poorer merchants and residents in the low-lying areas of Encarnación, a major city on the southern border of Paraguay. River levels rose dramatically upon completion of the dam, flooding out large sections of the city's lower areas. From

99-567: A series of seven cascades. This natural feature was said to rival the world-famous Iguazu Falls to the south. The falls were flooded, however, by the construction of the Itaipu Dam , which began operating in 1984. For approximately the next 200 km (120 mi), the Paraná flows southward and forms a natural boundary between Paraguay and Brazil until the confluence with the Iguazu River . Further upstream from this confluence, however,

132-549: Is South America's second longest river and one of the longest in the world. Politically, the basin includes part or all of the Brazilian states of Mato Grosso , Goiás , Minas Gerais , São Paulo , Mato Grosso do Sul , Paraná , Santa Catarina , and Rio Grande do Sul ; the Bolivian departments of Santa Cruz , Chuquisaca and Tarija ; the entire country of Paraguay; the western and central departments of Uruguay ; and

165-572: Is a river in south-central South America, running through Brazil, Paraguay, and Argentina for some 4,880 kilometres (3,030 mi). 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. The first European to go up

198-726: The Argentine Civil Wars , the Cisplatine and Platine wars, and the Paraguayan War . There are several hydroelectric dams operating in the basin, among them the third largest operating facility in the world, Itaipu , shared between Paraguay and Brazil on the Paraná River; the 21st, Ilha Solteira Dam in Brazil, on the Paraná; the 25th, the Yacyretá Dam shared between Paraguay and Argentina, also on

231-533: The Argentine provinces of Jujuy , Salta , Formosa , Chaco , Misiones , Tucumán , Santiago del Estero , Santa Fe , Corrientes , Córdoba , Entre Ríos , Buenos Aires , and La Pampa . The precipitation falling within this area is collected by numerous rivers to finally reach the Río de la Plata , almost all of it through the Paraná River , the Paraguay River , and the Uruguay River , La Plata's most important tributaries . The river discharges water into

264-582: The Napoleonic Wars , Spain became an ally of the French, and Britain invaded the region in 1806–1807 unsuccessfully. Conflict in the region intensified after the independence of the former Spanish and Portuguese colonies in the first quarter of the 19th century. Territorial interests and navigation rights in the Platine region were at issue in many armed conflicts throughout the century, including

297-755: The Pantanal wetland, after which its main tributaries include the Pilcomayo River and the Bermejo River , before it ends in the Paraná. The Uruguay's main tributaries include the Pelotas River , Canoas River , Ibicuí River , and the Río Negro . Another significant tributary to the Río de la Plata is the Salado del Sur River . The Río de la Plata Basin has been the site of much conflict in

330-472: The Río de la Plata estuary on the Atlantic Ocean . The Salado's mouth is about 170 kilometres (110 mi) south of the city of Buenos Aires . The Salado's drainage basin is about 170,000 square kilometres (66,000 sq mi), which is over half of the province's area. The region receives an annual average of 2,000 millimetres (79 in) of precipitation, which often causes flooding in

363-522: The sábalo ) are commercially important, and they are exploited for heavy internal consumption or for export. The Parana River delta ranks as one of the world's greatest bird-watching destinations. Much of the length of the Paraná is navigable , and the river serves as an important waterway linking inland cities in Argentina and Paraguay with the ocean, providing deepwater ports in some of these cities. The construction of enormous hydroelectric dams along

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396-541: The Atlantic Ocean at an average rate of 22,000 cubic metres per second (780,000 cu ft/s), the majority of which comes from the Paraná. The basin serves as the recharge zone for the Guarani Aquifer , one of the world's largest aquifer systems. The rivers of the La Plata Basin carry an estimated 57,000,000 cubic metres (2.0 × 10 cu ft) of silt into the Río de la Plata each year, where

429-882: The Iguazu river in Brazil are the Bento Munhoz , Ney Braga , José Richa , Salto Santiago , and Salto Osório hydroelectric power plants. On the Pelotas river in Brazil, it is the Machadinho Hydroelectric Power Plant . The Salto Grande Dam is on the Uruguay River and it is shared between Uruguay and Argentina. Also on the Uruguay River but in Brazilian territory is the Itá Hydroelectric Power Plant . On

462-749: The Instituto de Hidrologia de Llanuras de Azul. Ecological studies have been done by the Ecology group of Facultad de Agronomía de la UNICEN. In the 19th century, before the Conquest of the Desert , the Salado River served as frontier boundary between the Spanish colonised lands and those still under control of the indigenous peoples . Because Argentina has another, more important Salado River , in

495-804: The Negro River, in Uruguay, there are the Rincon del Bonete or Gabriel Terra Reservoir, and the Baygorria and Constitucion dams. The dialect of Spanish spoken in the lower Río de la Plata basin is Rioplatense Spanish , named for the river. The Platine region is the birthplace of the tango dance and music. Paran%C3%A1 River (Period: 1971–2000)667 km /a (21,100 m /s) The Paraná River ( Portuguese : Rio Paraná [ˈʁi.u paɾaˈna] ; Spanish: Río Paraná [ˈri.o paɾaˈna] ; Guarani : Ysyry Parana )

528-481: The Paraná River was the Venetian explorer Sebastian Cabot , in 1526, while working for Spain. A drought hit the river in 2021, causing a 77-year low. In eastern South America there is "an immense number of river names containing the element para- or parana- ", from Guarani language words meaning "river" or "sea"; attempts to derive a more precise meaning for the name of this, the largest of them, e.g. "kin of

561-850: The Paraná; and the 53rd, the Itumbiara Dam in Brazil on the Paranaíba River . Also on the Paranaíba in Brazil are the Emborcação and São Simão dams. On the Paraná in Brazil also are the Engineer Souza Dias and the Engineer Sérgio Motta dams. On the Grande River in Brazil are the Água Vermelha , Furnas , Peixotos , Marimbondo , Luiz Barreto , Jaguara , and Volta Grande dams. On

594-675: The Platine basin was largely neglected by the Spanish Empire until the XVIII century when Portugal, after the founding of Colonia del Sacramento and the colonization of Rio Grande do Sul , and Britain threatened to expand into the estuary. The Spanish colonies in the region were separated from the Viceroyalty of Perú and formed into a new Viceroyalty of the Río de la Plata in 1776 with the capital city in Buenos Aires . During

627-476: The Rio Paraná forms a massive drainage basin that encompasses much of the southcentral part of South America, essentially including all of Paraguay, much of southern Brazil, northern Argentina, and the southeastern part of Bolivia . If the Uruguay River is counted as a tributary to the Paraná, this watershed extends to cover most of Uruguay as well. The volume of water flowing into the Atlantic Ocean through

660-466: The Río de la Plata roughly equals the volume at the Mississippi River delta . This watershed contains a number of large cities, including São Paulo , Buenos Aires , Rosario , Asunción , Brasília , and La Plata . The Paraná and its tributaries provide a source of income and of daily sustenance for fishermen who live along its banks. Some of the species of fish (such as the surubí and

693-594: The Sun's solar cycle . The course of the Paraná is crossed by the following bridges, beginning upstream: Salado del Sur River The Salado River ( Spanish : Río Salado , Spanish pronunciation: [ˈri.o saˈlaðo] ) is a river in northern Buenos Aires Province , Argentina . It originates at El Chañar Lake on the boundary with Santa Fe Province , 40 metres (130 ft) above mean sea level , and flows generally southeast for 640 kilometres (400 mi) before debouching into Samborombón Bay , part of

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726-474: The city of Diamante, Entre Ríos , it splits into several arms and it forms the Paraná Delta . The main tributaries from the mouth: tributary tributary (km) (km ) (m /s) Tiestos Grandes de las Conchas Garupá Guazú Piray Guazú Piray Mini Guazú Urugua-i Francisco Falço Braço Sul Francisco Verdadeiro Guaçu (Arantes) Period: 1971–2000 Together with its tributaries,

759-489: The confluence with the Paraguay River, the Paraná again turns to the south for another approximately 820 km (510 mi) through Argentina, making a slow turn back to the east near the city of Rosario for the final stretch of less than 500 km (310 mi) before merging with the Uruguay River to form the Río de la Plata . This flows into the Atlantic Ocean . During the part of its course downstream from

792-540: The low-lying area. The river flows by the cities of Junín , Roque Pérez , and General Belgrano , as well as a number of wetlands and lakes; channelization of the lower course has improved the drainage of the river's 88 cubic metres per second (3,100 cu ft/s). Nearly 1 million people live in the basin. Hydrological studies have been performed in the Salado basin, principally in the Azul, Buenos Aires creek basin by

825-532: The modern history of South America , much of it because the basin contained the (contested) frontiers between the Portuguese and Spanish Empires in South America and their successor states. A series of wars has been fought over territorial control in the region, particularly in the nineteenth century. Explorer Sebastian Cabot made a detailed study of the Río de la Plata and its tributaries and gave

858-518: The muddy waters are stirred up by winds and tides; the shipping route from the Atlantic to Buenos Aires is kept open by continual dredging . The Paraná River's main tributaries include the Paranaíba River , Grande River , Tietê River , Paranapanema River , Iguazu River , Paraguay River, and the Salado River , after which it ends in the large Paraná Delta . The Paraguay River flows through

891-476: The northern part of the country, this Salado River is sometimes called Salado del Sur ("Southern Salado"). 35°44′44″S 57°21′51″W  /  35.74556°S 57.36417°W  / -35.74556; -57.36417 This article about a place in Buenos Aires Province , Argentina is a stub . You can help Misplaced Pages by expanding it . This article related to a river in Argentina

924-653: The river is dammed by the Itaipu Dam, the third largest hydroelectric power plant in the world (following the Three Gorges Dam and the Baihetan Dam , both in the People's Republic of China ), creating a massive, shallow reservoir behind it. After merging with the Iguazu, the Paraná becomes the natural border between Paraguay and Argentina. Overlooking the Paraná River from Encarnación, Paraguay , across

957-458: The river its modern name. He explored the Paraná and Uruguay rivers between 1526 and 1529, ascending the Paraná as far as the present-day city of Asunción , and also explored up the Paraguay River. Cabot acquired silver trinkets trading with the Guaraní near today's Asunción, and these objects gave rise to the name Río de la Plata, "river of silver". The first European colony in the Platine region

990-493: The river's length has blocked its use as a shipping corridor to cities further upstream, but the economic impact of those dams offsets this. The Yacyretá Dam and the Itaipu Dam on the Paraguay border have made the small, largely undeveloped nation of Paraguay the world's largest exporter of hydroelectric power . Due to its use for oceangoing ships, measurements of the water tables extend back to 1904. The data correlates with

1023-409: The river, is downtown Posadas, Argentina. The river continues its general southward course for about 468 km (291 mi) before making a gradual turn to the west for another 820 km (510 mi), and then encounters the Paraguay River , the largest tributary along the course of the river. Before this confluence, the river passes through a second major hydroelectric project, the Yacyretá Dam ,

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1056-526: The sea", have been discounted. The course is formed at the confluence of the Paranaiba and Rio Grande rivers in southern Brazil. From the confluence the river flows in a generally southwestern direction for about 619 km (385 mi) before encountering the city of Saltos del Guaira , Paraguay. This was once the location of the Guaíra Falls (Sete Quedas waterfalls, where the Paraná fell over

1089-400: Was the city of Buenos Aires , founded by Pedro de Mendoza on 2 February 1536. This settlement, however, was quickly abandoned; the failure to establish a settlement on the La Plata estuary led to explorations upriver and the founding of Asunción in 1537. Buenos Aires was subsequently refounded by Juan de Garay on 11 June 1580. During the colonial era because of the lack of precious metals,

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