| Hirase Dam | |
| Location: | Yamaguchi Prefecture, Japan |
| Dam Length: | 300m |
| Dam Height: | 73m |
| Construction Began: | 1973 |
| Res Capacity Total: | 29500 thousand cubic meters |
| Res Catchment: | 336.2 sq. km |
| Res Surface: | 133 hectares |
| Coordinates: | 34.2542°N 131.9372°W |
| Location Map: | Japan |
Hirase Dam is a gravity dam located in Yamaguchi prefecture in Japan. The dam is used for flood control, water supply and power production. The catchment area of the dam is 336.2 km2. The dam impounds about 133 ha of land when full and can store 29500 thousand cubic meters of water. The construction of the dam was started on 1973.[1]