Río Chira is the name of a river in northern 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....

 whose mouth is 20 km north of the provincial capital of Piura

Piura

Piura is a city in northwestern Peru. It is the capital of the Piura Region and the Piura Province. The population is 377,496.It was here that Spanish Conqueror Francisco Pizarro founded the third Spanish city in South America and first in Peru, San Miguel de Piura, in July 1532...

.

Its source is in the Ecuador

Ecuador

Ecuador , officially the Republic of Ecuador is a representative democratic republic in South America, bordered by Colombia on the north, Peru on the east and south, and by the Pacific Ocean to the west. It is one of only two countries in South America, along with Chile, that do not have a border...

ian 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...

 near the town of Papaca in the province Loja from where it flows for ca 250 km in easterly directions. After crossing the border to Peru, it is dammed up in the 885 million m³ Poechos

Poechos

Poechos Reservoir is a middle-sized reservoir on Peru's Chira River in the border area between Peru and Ecuador.Its purpose is to improve the accumulation of water stocks in the upper part of Peru's Chira basin by flood control, irrigation, drainage and electricity generation.-Location:The Poechos...

 reservoir and later passes the town of Sullana

Sullana

Sullana is the name of the capital of the Sullana Province, in the north-western coastal plains of Peru on the Chira valley.-Location:Sullana is located at 04°53' south latitude and 80°41' west longitude, 38 km north of Piura, the capital of the region.-Climate:The province has a tropical...

.