Dodairagawa Dam
Location of Dodairagawa Dam in Japan
Location	Gunma Prefecture, Japan
Coordinates	36°14′08″N 138°40′42″E / 36.23556°N 138.67833°E / 36.23556; 138.67833
Construction began	1978
Opening date	1992
Dam and spillways
Type of dam	Gravity
Impounds	Ichinokaya River
Height	70 m (230 ft)
Length	300 m (980 ft)
Reservoir
Creates	Arafune Lake
Total capacity	5,100,000 m3 (180,000,000 cu ft)
Catchment area	27.6 km2 (10.7 sq mi)
Surface area	22 hectares

Dodairagawa Dam is a gravity dam located in Gunma Prefecture in Japan. The dam is used for flood control and water supply. The catchment area of the dam is 27.6 km². The dam impounds about 22 ha of land when full and can store 5100 thousand cubic meters of water. The construction of the dam was started on 1978 and completed in 1992.^[1]