ACONCAGUA:

The Aconcagua River Valley is located North East of the city of Santiago. Aconcagua River is a river in Chile that rises from the joint of two minor tributary rivers at 1430 metres over sea level in the Andes, Juncal River - from the East - and Blanco River - from the South-East.
It flows westward through the  broad valley and enters the Pacific ocean 20 km north of Valparaíso.
The river has a course of about 142 km (88 mi), and its waters irrigate the most populous sections of the Chilean provinces of San Felipe de Aconcagua and Los Andes, being the most important economic resource of those regions.
Although it has the same name, Aconcagua river does not rise in the slopes of the mount Aconcagua, which is entirely in Argentina about 20 km from the beginning of the river, in the Chilean territory.
The province is very mountainous. The climate is hot and dry, the rainfall being too small to influence climatic conditions. The valley is highly fertile, and where irrigation is employed large crops are easily raised.
The region is primarily dedicated to fruit, vegetable and flower production, but has produced wine grapes since the mid-19th century. The possibility of incorporating drip irrigation sparked renewed interest in the valley beginning in the 1980s. The region pioneered the planting of Syrah in Chile and currently has large tracts of land dedicated to organic and biodynamic agriculture.
The river`s waters irrigate the best and most populous part of the province. Alfalfa and grapes are the principal products, and considerable attention is given to the cultivation of other fruits, such as figs, peaches, oranges and melons.
The capital of the valley is San Felipe. The other chief town is Santa Rosa de los Andes (est. pop. 6.854).