| Yokoyama Dam | |
|---|---|
| Location | Ibigawa, Gifu Prefecture, Japan. |
| Construction began | 1957 |
| Opening date | 1964 |
| Dam and spillways | |
| Height | 80.8 m |
| Length | 220.0 m |
| Impounds | Ibi River |
| Reservoir | |
| Capacity | 43,000,000 m³ |
| Catchment area | 471.0 km² |
| Surface area | 170 hectares |
Yokoyama Dam (横山ダム Yokoyama damu) is a dam in Ibigawa, in the Gifu Prefecture of Japan.
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