(Spanish: Lago Chapo
) is a lake
located in Los Lagos Region
. It lies immediately southeast of Calbuco
volcano and south of Llanquihue National Reserve
. Just south of the lake is Alerce Andino National Park
Its waters are used for hydroelectric power generation, which causes variations in the level of the lake.
Reloncaví Estuary receives the outflow of Chapo lake.