| Nariai Dam | |
| Name Official: | 成相ダム |
| Location: | Hyogo Prefecture, Japan |
| Dam Length: | 223.5m |
| Dam Height: | 61m |
| Construction Began: | 1981 |
| Opening: | 1999 |
| Res Capacity Total: | 4050 thousand cubic meters |
| Res Catchment: | 5.1 sq. km |
| Res Surface: | 19 hectares |
| Coordinates: | 34.2742°N 134.8158°W |
| Location Map: | Japan |
Nariai Dam is a gravity dam located in Hyogo Prefecture in Japan. The dam is used for flood control and water supply. The catchment area of the dam is 5.1 km2. The dam impounds about 19 ha of land when full and can store 4050 thousand cubic meters of water. The construction of the dam was started on 1981 and completed in 1999.[1]