Guaíra Falls
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The Guairá Falls () or Guaíra Falls () were a series of immense
waterfall A waterfall is any point in a river or stream where water flows over a vertical drop or a series of steep drops. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. Waterfalls can be formed in seve ...
s on the
Paraná River The Paraná River ( ; ; ) is a river in south-central South America, running through Brazil, Paraguay, and Argentina for some ."Parana River". Encyclopædia Britannica. Encyclopædia Britannica Online. Encyclopædia Britannica Inc., 2012. Web. ...
along the
border Borders are generally defined as geography, geographical boundaries, imposed either by features such as oceans and terrain, or by polity, political entities such as governments, sovereign states, federated states, and other administrative divisio ...
between
Paraguay Paraguay, officially the Republic of Paraguay, is a landlocked country in South America. It is bordered by Argentina to the Argentina–Paraguay border, south and southwest, Brazil to the Brazil–Paraguay border, east and northeast, and Boli ...
and
Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...
. The falls ceased to exist in 1982 when they were inundated by the impoundment of the
Itaipu Dam The Itaipu Dam ( ; ; ) is a hydroelectric dam on the Paraná River located on the border between Brazil and Paraguay. It is the third largest hydroelectric dam in the world, and holds the 45th largest reservoir in the world. The name "Itai ...
reservoir A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation. Reservoirs are created by controlling a watercourse that drains an existing body of wa ...
. While published figures vary, ranging from per second to per second, Guaíra's flow rate was among the greatest of any then-existing falls on Earth. The falls comprised 18 cataracts clustered in seven groups—hence their Portuguese name, ''Sete Quedas'' (Seven Falls)—near the Brazilian municipality of
Guaíra, Paraná Guaíra () is a Municipalities of Brazil, municipality in the states of Brazil, state of Paraná (state), Paraná in the Southern Region, Brazil, Southern Region of Brazil. The population is 33,310 (2020 est.) in an area of 560 km2. The eleva ...
and Salto del Guairá, the easternmost city in Paraguay. The falls were located at a point where the Paraná River was forced through a narrow
gorge A canyon (; archaic British English spelling: ''cañon''), gorge or chasm, is a deep cleft between escarpments or cliffs resulting from weathering and the erosion, erosive activity of a river over geologic time scales. Rivers have a natural tend ...
. At the head of the falls, the river narrowed sharply from a width of about to . The total height of the falls was approximately , while the largest individual cataract was high. The roar of the plunging water could be heard from away.


Submergence

A tourist attraction and a favorite of locals, the falls were completely submerged under the
artificial lake A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from t ...
created by the
Itaipu Dam The Itaipu Dam ( ; ; ) is a hydroelectric dam on the Paraná River located on the border between Brazil and Paraguay. It is the third largest hydroelectric dam in the world, and holds the 45th largest reservoir in the world. The name "Itai ...
upon its completion in 1982. The building of the dam, authorized by a 1973 bilateral agreement between the Paraguayan and Brazilian regimes of the time, marked a new era of cooperation between the countries, both of which had claimed ownership of Guaíra Falls.Wolf, Aaron T.; Newton, Joshua T. Case Study Transboundary Dispute Resolution: the La Plata basin. As construction of the Itaipu Dam progressed, thousands of visitors flocked to the area to see the falls before they disappeared forever. Disaster struck on January 17, 1982, when a suspended footbridge affording access to a particularly spectacular view of the falls collapsed, killing dozens of tourists. Brazilian poet Carlos Drummond de Andrade wrote a poem expressing his dismay at the destruction of Guaíra Falls. Set in large type, the poem filled an entire page in the ''
Jornal do Brasil ''Jornal do Brasil'', widely known as ''JB'', is a daily newspaper published by Editora JB in Rio de Janeiro, Brazil. The paper was founded in 1891 and is the third oldest extant Brazilian paper, after the ''Diário de Pernambuco'' and ''O Esta ...
'' newspaper:
Here seven visions, seven liquid sculptures
vanished through the computerized calculations
of a country ceasing to be human
in order to become a chilly corporation, nothing more.
A movement becomes a dam.
''—Carlos Drummond de Andrade, "Farewell to Seven Falls" (excerpt, translated from the Portuguese)''
Earlier, as the waters began to rise, a demonstration took place, as hundreds of people gathered to participate in a ''quarup'', an indigenous ritual of remembrance for the dead, in memory of the falls. The inundation took only 14 days, occurring during the rainy season when the level of the Paraná River was high. By October 27, 1982, the reservoir was fully formed and the falls had vanished, with only part of the rock face visible during years of drought. The director of the company that built the dam was quoted as saying, "We're not destroying Seven Falls. We're just going to transfer it to Itaipu Dam, whose
spillway A spillway is a structure used to provide the controlled release of water downstream from a dam or levee, typically into the riverbed of the dammed river itself. In the United Kingdom, they may be known as overflow channels. Spillways ensure tha ...
will be a substitute for he falls'beauty".


See also

*
List of waterfalls This list of notable waterfalls of the world is sorted by continent, then country, then province, state or territory. A waterfall is included if it is at least tall and has an existing Wikipedia article, or it is considered historically sig ...
*
List of waterfalls by flow rate This list of waterfalls by flow rate includes all waterfalls which are known to have an average flow rate or discharge of at least . The waterfalls in this list are those for which there is verifiable information, and the list should not be assu ...
* Itaipu Lake


References


Sources

* Brazil, Lonely Planet Guide, 4th Edition, c. 1998 Lonely Planet Publications, PO Box 617, Hawthorn, Victoria 3122, Australia


External links


A new gateway to the heart of South America, 1918 by William Alfred ReidSalto de Sete Quedas photosetSalto de Sete Quedas - Brasil, December 1978 by Mario Cesar Mendonça GomesSalto de Sete Quedas - Brasil, December 1978 by Mario Cesar Mendonça Gomes
{{DEFAULTSORT:Guaira Falls Waterfalls of Brazil Waterfalls of Paraguay Submerged waterfalls Brazil–Paraguay border Paraná River Canindeyú Department Landforms of Paraná (state)