| Biwanoki-ike | |
| Location: | Yamaguchi Prefecture, Japan |
| Dam Length: | 63.5m |
| Dam Height: | 17.1m |
| Opening: | 1962 |
| Res Capacity Total: | 50 thousand cubic meters |
| Res Catchment: | 0.2 sq. km |
| Res Surface: | 1 hectares |
| Coordinates: | 34.3653°N 131.1425°W |
| Location Map: | Japan |
Biwanoki-ike is an earthfill dam located in Yamaguchi 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 50 thousand cubic meters of water. The construction of the dam was completed in 1962.[1]