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Colorado River (argentina)




The river has been usually described as being formed by the confluence of the Grande and Barrancas, but as the latter is only a small stream compared with the Grande it is better described as a tributary, and the Grande as a part of the main river under another name. After leaving the vicinity of the Andes , the Colorado flows through a barren, arid territory and receives no tributary of note except the Curaco, which has its sources in the Pampas , and is considered to be part of the ancient outlet of the now closed lacustrine basin of southern Mendoza . The bottom lands of the Colorado in its course across Patagonia are fertile and wooded, but their area is too limited to support more than a small, scattered population.

The Colorado river marks most of the political limit between the Rio Negro and Buenos Aires provinces, and the limit between Rio Negro and La Pampa . The artificial ''Embalse Casa de Piedra'' dam was constructed both as an hydroelectric central and as a water lever regulator for the arid region the river crosses.