| Iwamatsu Dam | |
|---|---|
| Location | Hokkaidō, Japan. |
| Construction began | 1939 |
| Opening date | 1941 |
| Dam and spillways | |
| Height | 37.2 m |
| Length | 190.5 m |
| Impounds | Tokachi River |
| Reservoir | |
| Capacity | 9,026,000 m³ |
| Catchment area | 788 km² |
| Surface area | 102 hectares |
The Iwamatsu Dam is a dam in Hokkaidō, Japan.
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