The Perené River is a Peru

Peru

Peru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean....

vian 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...

 on the eastern slopes of the South America

South America

South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

n 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...

.

It is formed at 10°57′06"S 75°17′00"W at the confluence of the Chanchamayo River and the Paucartambo rivers, 15 km above the community of Perené, at 650 m above sea level.

The river flows in a south-easterly direction; its length is 165 km.

At 11°09′54"S 74°14′03"W the Perené joins the Ene River

Ene River

The Ene River is a Peruvian river on the eastern slopes of the South American Andes.The Río Ene is part of the headwaters of the Amazon River whose origin is at the Nevado Mismi south of Cuzco where it first becomes Apurímac River, then the Ene River and Tambo River before its waters meet the...

, 10 km below the community of Puerto Ocopa, at 400 m above sea level, and is called the Tambo River from then on.