The Tunuyán River is a river in the Argentine

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...

 province

Provinces of Argentina

Argentina is subdivided into twenty-three provinces and one autonomous city...

 of Mendoza

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...

. It is born in Mount Tupungato

Tupungato

Tupungato, one of the highest mountains in South America, is a massive stratovolcano dating to Pleistocene times. It lies on the border between the Chilean Metropolitan Region and the , near a major international highway about 80 km east of Santiago, Chile. It is located about south of Monte...

, 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, and flows initially to the northeast, passing by the city of Tunuyán

Tunuyán

Tunuyán is a city in the west of the province of Mendoza, Argentina, located on the western shore of the Tunuyán River, south from the provincial capital Mendoza and east of the Chilean border. It has 42,125 inhabitants as per the , and is the head town of the Tunuyán Department...

. It is then dam

Dam

A dam is a barrier that impounds water or underground streams. Dams generally serve the primary purpose of retaining water, while other structures such as floodgates or levees are used to manage or prevent water flow into specific land regions. Hydropower and pumped-storage hydroelectricity are...

med by the El Carrizal Dam

El Carrizal Dam

The El Carrizal Dam is a dam on the upper-middle course of the Tunuyán River, in the center-north of the province of Mendoza, Argentina, at , upstream from the city of Rivadavia. Its reservoir measures about 15×5 km, and its maximum water level stands at 785.5 m above the sea, covering an area of...

, after which it turns east-southeast passing near the cities of Rivadavia

Rivadavia, Mendoza

Rivadavia is a city in the center-north of the province of Mendoza, Argentina. It has 52,567 inhabitants as per the , and is the head town of the Rivadavia Department...

, Santa Rosa

Santa Rosa, Mendoza

Santa Rosa is a city in the center-north of the province of Mendoza, Argentina, located on the northern shore of the Tunuyán River, by National Route 7, south-east from the provincial capital Mendoza. It has 15,818 inhabitants as per the , and is the head town of the Santa Rosa Department....

 and La Paz

La Paz, Mendoza

La Paz is a town in the northeast of the province of Mendoza, Argentina, located on National Route 7, north of the Tunuyán River. It has 9,560 inhabitants as per the , and is the head town of the La Paz Department....

. Finally, it branches into the Tunuyán Nuevo (north) and Tunuyán Viejo (south), and empties into the Desaguadero River

Desaguadero River

The Desaguadero River is the general name of a river in western Argentina that receives a number of different names on its path of 1,515 kilometres, with its most important section named Desaguadero proper.-Spring:...

.