The Bermejo River (

Spanish Spanish might refer to: * Items from or related to Spain: **Spaniards are a nation and ethnic group indigenous to Spain **Spanish language, spoken in Spain and many countries in the Americas **Spanish cuisine **Spanish history **Spanish culture ...

, Río Bermejo) is a river in

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...

that flows from

Bolivia Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, w ...

to the

Paraguay River The Paraguay River (''Ysyry Paraguái'' in Guarani language, Guarani, ''Rio Paraguai'' in Portuguese language, Portuguese, ''Río Paraguay'' in Spanish language, Spanish) is a major river in south-central South America, running through Brazil, Bol ...

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

. The river is generally called Bermejo in spite of its different names along its way, but it also has its own Native American names; in Wichí it is called Teuco, and in Guaraní it is called Ypitá. In the plains of Argentina's

Gran Chaco The Gran Chaco or simply Chaco is a sparsely populated, hot and semiarid lowland tropical dry broadleaf forest natural region of the Río de la Plata basin, divided among eastern Bolivia, western Paraguay, northern Argentina, and a portion o ...

the Bermejo forms

wetland A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially ...

s and splits into two branches. The southern branch is the bed of the old Bermejo River, now an intermittent stream called Río Bermejito. The northern branch is now the

main stem In hydrology, a main stem or mainstem (also known as a trunk) is "the primary downstream segment of a river, as contrasted to its tributaries". The mainstem extends all the way from one specific headwater to the outlet of the river, although t ...

of the Bermejo and is called the Teuco River (''Río Teuco''), Bermejo Nuevo, or simply the Bermejo River. The two branches rejoin at , near Villa Río Bermejito, forming the Lower Bermejo River. The Bermejo River is long and has a

drainage basin A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...

of . Its mean annual discharge is irregular and varies between and . The river is born in a mountain range known as Sierra de Santa Victoria around coordinates near

Tarija Tarija or San Bernardo de la Frontera de Tarixa is a city in southern Bolivia. Founded in 1574, Tarija is the largest city and capital and municipality within the Tarija Department, with an airport ( Capitán Oriel Lea Plaza Airport, (TJA)) of ...

, a few kilometres southeast of Chaguaya in Bolivia, and not far from

La Quiaca La Quiaca is a small city in the north of the , on the southern bank of the La Quiaca River, opposite the town of Villazón, Bolivia. It lies at the end of National Route 9, from San Salvador de Jujuy (the provincial capital), and at an altitude ...

Jujuy Province Jujuy is a province of Argentina, located in the extreme northwest of the country, at the borders with Chile and Bolivia. The only neighboring Argentine province is Salta to the east and south. Geography There are three main areas in Jujuy ...

, Argentina. In general, it maintains a southeastern direction. At its highest part, its main

tributaries A tributary, or an ''affluent'', is a stream or river that flows into a larger stream ('' main stem'' or ''"parent"''), river, or a lake. A tributary does not flow directly into a sea or ocean. Tributaries, and the main stem river into which the ...

are the Lipeo River, and further downstream the Grande de Tarija, the Iruya River, and the San Francisco River. It forms part of the international boundary between Argentina and Bolivia. The Bermejo is not navigable. In the late 19th century, numerous attempts were made to open up the commercial navigation of the river, but all of them failed, largely due to the river's shallow waters, which carry enormous amounts of sediment. Near the

Tropic of Capricorn The Tropic of Capricorn (or the Southern Tropic) is the circle of latitude that contains the subsolar point at the December (or southern) solstice. It is thus the southernmost latitude where the Sun can be seen directly overhead. It also reach ...

, the river splits in two; the smaller southern branch, Bermejito, and the northern branch that is known as the Teuco River (also called Bermejo or ''Bermejo Nuevo''). When leaving the province of Salta, the Teuco marks the boundary between the

provinces A province is an administrative division within a country or state. The term derives from the ancient Roman , which was the major territorial and administrative unit of the Roman Empire's territorial possessions outside Italy. The term ''provi ...

of Chaco and

Formosa Taiwan, officially the Republic of China (ROC), is a country in East Asia. The island of Taiwan, formerly known to Westerners as Formosa, has an area of and makes up 99% of the land under ROC control. It lies about across the Taiwan Strait f ...

. The Bermejito, is intermittent and

meander A meander is one of a series of regular sinuous curves in the Channel (geography), channel of a river or other watercourse. It is produced as a watercourse erosion, erodes the sediments of an outer, concave bank (cut bank, cut bank or river cl ...

ing. It crosses Chaco Province near the El Impenetrable jungle. On the shores of this river can still be seen the ruins of the former towns of Concepcion del Bermejo, San Bernardo de Vértiz (), and La Cangayé (). The Teuco follows its course to finality and into the Paraguay River, in front of the city of Pilar, in

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 ...

. The river carries red-coloured sediments and produces irregular accumulations that can even alter its course, leaving the older paths as wet depressions.

References

{{Coord, 26, 52, S, 58, 23, W, type:river_region:AR_dim:10km_source:GNS, display=title Rivers of Argentina Rivers of Salta Province Rivers of Chaco Province Border rivers Rivers of Formosa Province International rivers of South America Argentina–Bolivia border Rivers of Tarija Department Tributaries of the Paraguay River

See also

References