| Hayakuchi Dam | |
| Location: | Akita Prefecture, Japan |
| Dam Length: | 178m |
| Dam Height: | 61m |
| Construction Began: | 1969 |
| Opening: | 1976 |
| Res Capacity Total: | 6550 thousand cubic meters |
| Res Catchment: | 48.5 sq. km |
| Res Surface: | 33 hectares |
| Coordinates: | 40.4044°N 140.3542°W |
| Location Map: | Japan |
Hayakuchi Dam is a gravity dam located in Akita Prefecture in Japan. The dam is used for flood control and power production. The catchment area of the dam is 48.5 km2. The dam impounds about 33 ha of land when full and can store 6550 thousand cubic meters of water. The construction of the dam was started on 1969 and completed in 1976.[1]