| Nishiyama Dam | |
| Name Official: | 西山ダム |
| Location: | Kochi Prefecture, Japan |
| Dam Length: | 74.7m |
| Dam Height: | 27.2m |
| Construction Began: | 1982 |
| Opening: | 1997 |
| Res Capacity Total: | 56 thousand cubic meters |
| Res Catchment: | 0.2 sq. km |
| Res Surface: | 1 hectares |
| Coordinates: | 33.365°N 134.0869°W |
| Location Map: | Japan |
Nishiyama Dam is an earthfill dam located in Kochi Prefecture in Japan. The dam is used for irrigation. The catchment area of the dam is 0.2 km2. The dam impounds about 1 ha of land when full and can store 56 thousand cubic meters of water. The construction of the dam was started on 1982 and completed in 1997.[1]