High Andes. The most distant source of the Mira River may be Puruanta Lake, located at an elevation of in the
Cayambe Coca Ecological Reserve of northern Ecuador. The cities of
Ibarra and
Otavalo are in the upper
drainage basin of the river which includes most of
Imbabura and
Carchi provinces. The borders of the two provinces run roughly along the course of the Mira.
Chota River and Chota Valley. Several tributaries unite to form the Chota River north of the town of Pimampiro at an elevation of . The Chota valley, deep, but wide and fertile in places, extends along the river for about to the village of Concepcion at an elevation of Below the junction of the Chota and Piguchuela rivers, the river is called the Mira. The climate is semi-arid with precipitation on the valley floor as low as per year. Irrigation is necessary for most agriculture. The relatively low elevation (for the Andes) of the Chota Valley has resulted since prehistoric times in the valley being used to grow warm-climate and semi-tropical crops:
coca,
cotton,
chile peppers,
maize, and fruits. A class of traders called
mindaeles, exchanged the semi-tropical crops of the valley with the people of the
Pais Caraqui chiefdoms of the surrounding higher and cooler elevations. Beginning in the 16th century, the
Spanish introduced additional crops, especially
sugar cane,
olives. and
grapes.
Transition. A few miles north of Concepcion, the Mira begins its flow through a narrow, sparsely populated canyon bordered by forested uplands which persist to near the Colombian border, dropping in elevation over the course of from near Conception to . The Mira in this section and upstream in the Chota Valley is popular for
rafting and
kayaking as there are many
Class III and IV rapids.
Coastal. The Mira River is navigable for the it flows through
Nariño Department of Colombia to the Pacific The Mira is joined by the
San Juan River, a major tributary. This is a
rainforest region with only a small population devoted mostly to the cultivation of
bananas and
African oil Palm. ==Afro-Ecuadorians, bomba, and soccer==