Carioca River
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The Carioca River (
Portuguese Portuguese may refer to: * anything of, from, or related to the country and nation of Portugal ** Portuguese cuisine, traditional foods ** Portuguese language, a Romance language *** Portuguese dialects, variants of the Portuguese language ** Portu ...
: Rio Carioca) is a river in the state of
Rio de Janeiro Rio de Janeiro ( , , ; literally 'River of January'), or simply Rio, is the capital of the state of the same name, Brazil's third-most populous state, and the second-most populous city in Brazil, after São Paulo. Listed by the GaWC as a b ...
state in southeastern
Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...
. It emerges from two springs on the southeast slopes of the Tijuca Massif in the protected Mata Atlantica forest of
Tijuca National Park The Tijuca National Park () is an urban national park in the mountains of the city of Rio de Janeiro, Brazil. The park is part of the Atlantic Forest Biosphere Preserve, and is administered by the Chico Mendes Institute for Biodiversity Conserva ...
. The river then leaves
Tijuca Forest The Tijuca National Park () is an urban national park in the mountains of the city of Rio de Janeiro, Brazil. The park is part of the Atlantic Forest Biosphere Preserve, and is administered by the Chico Mendes Institute for Biodiversity Conservat ...
into the Guararapes
favela Favela () is an umbrella name for several types of working-class neighborhoods in Brazil. The term was first used in the Providência neighborhood in the center of Rio de Janeiro in the late 19th century, which was built by soldiers who had ...
, then into the high-income
Cosme Velho Cosme Velho is a neighborhood in the South Zone of Rio de Janeiro, adjacent to Laranjeiras. Its main street is ''Rua Cosme Velho'', an extension of ''Rua das Laranjeiras''. Cosme Velho is frequently visited by tourists. The ''Estação de Ferro ...
neighborhood, and then it is buried completely underground. The river reemerges in
Flamengo Park Flamengo Park, also known as ''Aterro do Flamengo'', Eduardo Gomes Park, and Aterro do Brigadeiro Eduardo Gomes, is the largest public park and recreation area within the city of Rio de Janeiro, in eastern Brazil, and the largest urban park by t ...
to empty into
Guanabara Bay Guanabara Bay ( pt, Baía de Guanabara, ) is an oceanic bay located in Southeast Brazil in the state of Rio de Janeiro. On its western shore lie the cities of Rio de Janeiro and Duque de Caxias, and on its eastern shore the cities of Niterói and ...
at Flamengo Beach. Research by the Fundação SOS Mata Atlântica in 2015 confirmed that every river in the City of
Rio de Janeiro Rio de Janeiro ( , , ; literally 'River of January'), or simply Rio, is the capital of the state of the same name, Brazil's third-most populous state, and the second-most populous city in Brazil, after São Paulo. Listed by the GaWC as a b ...
is polluted, including the Carioca River. The river, once the primary source of fresh water in the city, is now one of its most polluted. Untreated sewage is the primary source of pollution of the Carioca; the stretch of the river in Guararapes and Cosme Velho are a great sources of unregulated sewage. The water of the Carioca carries pollutants that cause
diarrhea Diarrhea, also spelled diarrhoea, is the condition of having at least three loose, liquid, or watery bowel movements each day. It often lasts for a few days and can result in dehydration due to fluid loss. Signs of dehydration often begin wi ...
,
hepatitis Hepatitis is inflammation of the liver tissue. Some people or animals with hepatitis have no symptoms, whereas others develop yellow discoloration of the skin and whites of the eyes (jaundice), poor appetite, vomiting, tiredness, abdominal pa ...
, and
leptospirosis Leptospirosis is a blood infection caused by the bacteria ''Leptospira''. Signs and symptoms can range from none to mild (headaches, muscle pains, and fevers) to severe ( bleeding in the lungs or meningitis). Weil's disease, the acute, severe ...
. The river has a single
wastewater treatment Wastewater treatment is a process used to remove contaminants from wastewater and convert it into an effluent that can be returned to the water cycle. Once returned to the water cycle, the effluent creates an acceptable impact on the environme ...
facility near its mouth before emptying into Guanabara Bay. It was installed by the State of Rio de Janeiro in 2001. Biochemical evaluation of the river began in 1991 and water quality decreases annually.


See also

*
List of rivers of Rio de Janeiro A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby unio ...


References

Rivers of Rio de Janeiro (state) {{RiodeJaneiro-river-stub