| Sanzai Dam | |
| Location: | Ehime Prefecture, Japan |
| Dam Length: | 205m |
| Dam Height: | 64m |
| Construction Began: | 1972 |
| Opening: | 1980 |
| Res Capacity Total: | 6500 thousand cubic meters |
| Res Catchment: | 29.4 sq. km |
| Res Surface: | 30 hectares |
| Coordinates: | 33.1175°N 132.5831°W |
| Location Map: | Japan |
Sanzai Dam is a gravity dam located in Ehime Prefecture in Japan. The dam is used for flood control, irrigation and water supply. The catchment area of the dam is 29.4 km2. The dam impounds about 30 ha of land when full and can store 6500 thousand cubic meters of water. The construction of the dam was started on 1972 and completed in 1980.[1]