The Malargüe River is a river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

 located in the southern zone of the Mendoza Province

Mendoza Province

The Province of Mendoza is a province of Argentina, located in the western central part of the country in the Cuyo region. It borders to the north with San Juan, the south with La Pampa and Neuquén, the east with San Luis, and to the west with the republic of Chile; the international limit is...

, in the west of Argentina

Argentina

Argentina , officially the Argentine Republic , is the second largest country in South America by land area, after Brazil. It is constituted as a federation of 23 provinces and an autonomous city, Buenos Aires...

. It originates in the Malargüe lagoon in the Andes

Andes

The Andes is the world's longest continental mountain range. It is a continual range of highlands along the western coast of South America. This range is about long, about to wide , and of an average height of about .Along its length, the Andes is split into several ranges, which are separated...

 range, at 2,500 m above mean sea level

Above mean sea level

The term above mean sea level refers to the elevation or altitude of any object, relative to the average sea level datum. AMSL is used extensively in radio by engineers to determine the coverage area a station will be able to reach...

, flows into the Malargüe Department

Malargüe Department

Malargüe is a department located in the south west of Mendoza Province in Argentina. Its borders are San Rafael in the north, La Pampa Province in the east, Neuquén Province in the south and Chile to the west....

 and ends in the Llancanelo Lagoon

Llancanelo Lagoon

Llancanelo Lagoon is a wetland with an area of 650 km² located in the Malargüe Department in the south of Mendoza Province, Argentina, 75 km from the city of Malargüe, at 1,280 m above mean sea level, within the arid region near the Andes in the limit between the regions of Cuyo and...

, being its main tributary.

The river is part of the Llancanelo basin, which has an area of 10,602 km² and is located at 35°30′S 70°00′W. Its flow increases in the summer (29.00 m³/s), when the ice begins to melt, and decreases in the winter (6.31 m³/s). Near the city of Malargüe

Malargüe

- Transport and infrastructures :- Transportation :Malargüe is linked to the north of Mendoza by National Route 40. This route continues south, entering Neuquén Province, but is only partially built and not well maintained beyond Malargüe City....

, it is contained by the Blas Brisoli Dam, which derives water for irrigation. Trout can be found in this river and there is a trout hatchery co-located with the dam.

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