Kamiasō Dam (上麻生ダム, Kamiasō damu) is a dam in the Gifu Prefecture of Japan.

Kamiasō Dam
LocationGifu Prefecture, Japan.
Construction began1924
Opening date1926
Dam and spillways
ImpoundsHida River
Height13.2 m
Reservoir
Total capacity240,000 m3
Catchment area2,021.2 km2

The gravity dam was completed in 1926 and is managed by Chubu Electric Power. The water intake of the "Kamiasō plant" is used to generate 27,000 kilowatts of electricity. and Japan water agency's "Kisogawa Yosui" abstracts water from here, which is used for irrigation and water supply in central Gifu prefecture.