| Mitsuishi Dam | |
| Location: | Hokkaido Prefecture, Japan |
| Dam Length: | 240m |
| Dam Height: | 35m |
| Construction Began: | 1970 |
| Opening: | 1991 |
| Res Capacity Total: | 8170 thousand cubic meters |
| Res Catchment: | 25 sq. km |
| Res Surface: | 74 hectares |
| Coordinates: | 42.3817°N 142.6961°W |
| Location Map: | Japan |
Mitsuishi Dam is a rockfill dam located in Hokkaido Prefecture in Japan. The dam is used for irrigation. The catchment area of the dam is 25 km2. The dam impounds about 74 ha of land when full and can store 8170 thousand cubic meters of water. The construction of the dam was started on 1970 and completed in 1991.[1]