| Komukai Dam | |
| Location: | Chiba Prefecture, Japan |
| Dam Length: | 106m |
| Dam Height: | 37m |
| Construction Began: | 1972 |
| Opening: | 1975 |
| Res Capacity Total: | 950 thousand cubic meters |
| Res Catchment: | 11.3 sq. km |
| Res Surface: | 10 hectares |
| Coordinates: | 35.0658°N 139.9972°W |
| Location Map: | Japan |
Komukai Dam is a gravity dam located in Chiba Prefecture in Japan. The dam is used for water supply. The catchment area of the dam is 11.3 km2. The dam impounds about 10 ha of land when full and can store 950 thousand cubic meters of water. The construction of the dam was started on 1972 and completed in 1975.[1]