Flowing from Panguipulli Lake to Riñihue Lake, it carries the water of the six upper lakes of the Seven Lakes area into Riñihue, the last lake in the chain.
The river serves as a conduit from Panguipulli Lake to Riñihue Lake, channeling water from the six upper lakes in the Seven Lakes area into Riñihue, which is the final destination in the series of lakes.