Kamegawa Dam (Japanese: 亀川ダム) is a gravity dam located in Kumamoto Prefecture in Japan. The dam is used for flood control and water supply. The catchment area of the dam is 10.2 km2. The dam impounds about 24 ha of land when full and can store 2650 thousand cubic meters of water. The construction of the dam was started on 1968 and completed in 1982.