Shinaki Dam (品木ダム) is a dam in the Gunma Prefecture of Japan.

Shinaki Dam
LocationKuni, Gunma Prefecture, Japan.
Coordinates36°37′41″N 138°38′04″E / 36.62806°N 138.63444°E / 36.62806; 138.63444
Construction began1961
Opening date1965
Dam and spillways
Type of damGravity
ImpoundsYasawa River
Height43.5 m (143 ft)
Length106 m (348 ft)
Reservoir
Total capacity1,273,000 m3 (45,000,000 cu ft)
Catchment area30.9 km2 (11.9 sq mi)
Surface area12 hectares

Shinaki dam was constructed to neutralize strong acid water that flowed from Kusatsu Onsen. Calcium carbonate is used for neutralizing.