The Puelche River (Spanish: Río Puelche) is a natural water course that originates at the Pichi Trolón Pass, on the international border between Chile and Argentina of the Maule Region, and flows in a general west direction until it ends at the Maule River.[1]

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35°49′46″S 70°42′54″W / 35.8294°S 70.7149°W / -35.8294; -70.7149