The Teno 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 Maule Region

Maule Region

The VII Maule Region is one of Chile's 15 first order administrative divisions. Its capital is Talca. The region takes its name from the Maule River which, running westward from the Andes, bisects the region and spans a basin of about 20,600 km2...

 of central Chile

Chile

Chile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...

. It begins at the confluence of the Malo

Malo River (Teno)

-References:*...

and Nacimiento

Nacimiento River (Teno)

-References:*...

rivers. The former originates north of Planchón volcano at Lagunas de Teno. The river flows initially northwest across 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...

. At the locality of Los Queñes, the Teno is joined by the Claro River

Claro River (Teno)

-References:*...

, which is fed by glaciers of Planchón-Peteroa

Planchón-Peteroa

Planchón-Peteroa is a complex volcano extending in a north-south direction along the border between Argentina and Chile. It consists of volcanoes of various ages with several overlapping calderas...

 complex.

Shortly after being crossed by the Pan-American Highway

Pan-American Highway

The Pan-American Highway is a network of roads measuring about in total length. Except for an rainforest break, called the Darién Gap, the road links the mainland nations of the Americas in a connected highway system. According to Guinness World Records, the Pan-American Highway is the world's...

 and by Chile's main railroad, the Teno River turns its course southwestward until it meets the Lontué River

Lontué River

The Lontué River is a river in the province of Curicó in Chile. It originates about 50 km east of Curicó, at the confluence of the Colorado River and the Los Patos River. Both rivers have their origin next to the volcanos Descabezado Chico and Descabezado Grande...

, about 10 kilometers west of Curicó

Curicó

Curicó , meaning "Black Waters" in Mapudungun , is the capital city of the Curicó Province, part of the Maule Region in Chile's central valley....

 near the locality of Sagrada Familia, forming the Mataquito River

Mataquito River

Mataquito is a river located in the Province of Curicó, Maule Region of Chile and formed by the union of rivers Teno and Lontué about 10 kilometers west of Curicó near the locality of Sagrada Familia and empties into the Pacific Ocean south of the town of Iloca, Licantén.- Source :*...

.