Shimagawa Dam is a dam in the Gunma Prefecture of Japan.

Shimagawa Dam
LocationGunma Prefecture, Japan.
Coordinates36°41′47″N 138°46′53″E / 36.69639°N 138.78139°E / 36.69639; 138.78139
Construction began1980
Opening date1999
Dam and spillways
Type of damGravity
ImpoundsShima River
Height89.5 m (294 ft)
Length330 m (1,080 ft)
Reservoir
Total capacity9,200,000 m3 (320,000,000 cu ft)
Catchment area28.4 km2 (11.0 sq mi)