Its origin is at Lake Huechulafquen and it passes by the city of Junín de los Andes.

[1] The Chimehuin is considered a prime spot for fly fishing.

[2] The area around first part of the river's course (from the lake up to a few kilometers before Junín de los Andes) is a protected nature reserve (Área Natural Protegida Boca del Chimehuin).

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