Maipo River is the main 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...

 flowing through Santiago Metropolitan Region

Santiago Metropolitan Region

Santiago Metropolitan Region or simply Metropolitan Region is one of Chile's 15 first order administrative divisions. It is the country's only landlocked administrative region and contains the nation's capital, Santiago...

, 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...

. Its headwaters are on the west slope of Maipo

Maipo (volcano)

Maipo is a stratovolcano in the Andes, lying on the border between Argentina and Chile. It is located south of Tupungato and about southeast of Santiago....

 volcano, 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...

. Its most famous tributary is Mapocho River

Mapocho River

The Mapocho River flows from the Andes mountains onto the west and divides Chile's capital Santiago in two.-Course:...

. The Maipo River is by far the major source of irrigation

Irrigation

Irrigation may be defined as the science of artificial application of water to the land or soil. It is used to assist in the growing of agricultural crops, maintenance of landscapes, and revegetation of disturbed soils in dry areas and during periods of inadequate rainfall...

 and potable water for the region.

Course

In its upper course the river runs as an entrenched torrent through the Andes mountains. Here, it receives three major tributaries: El Volcán River, Yeso River

Yeso River

-References:*...

 and Colorado River. After leaving the Andes, the Maipo flows through the valley that bears its name. It is the best known wine-producing

Chilean wine

Chilean wine is wine made in the South American country of Chile. The region has a long viticultural history for a New World wine region dating to the 16th century when the Spanish conquistadors brought Vitis vinifera vines with them as they colonized the region. In the mid-19th century, French...

 region in Chile. The Maipo River travels 250 km before emptying into the Pacific Ocean

Pacific Ocean

The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

 near the locality of Llolleo, south of the port of San Antonio

San Antonio, Chile

San Antonio, meaning "Saint Anthony", is a major Chilean port and a commune in San Antonio Province, Valparaíso Region...

.

External links

• Río Maipo Map