Desaguadero River

The Desaguadero River (Spanish: Río Desaguadero, Spanish pronunciation: [ˈri.o ðesaɣwaˈðeɾo]) is a river in Argentina.

It is one of the major rivers that supplies the irrigated areas of Cuyo, and it flows in the eastern border of that region.

The river marked the traditional boundary between the vice-royalties of Buenos Aires and Peru.