The RÃÂo Blanco (Spanish for "white river") is a river of Chile. It originates close to Cerro Altar and flows generally northward for until it joins the Juncal River, at an elevation of approximately , forming the Aconcagua River. The mouth of the river is located close to Chile Route 60.
Los Leones River is the main tributary of the river. The inferior course of the RÃÂo Blanco is adjacent to RÃÂo Blanco National Reserve.