Iwamatsu Dam
| Iwamatsu Dam | |
|---|---|
| Location | Hokkaidō, Japan. |
| Coordinates | 43°11′49″N 142°56′11″E / 43.19694°N 142.93639°E |
| Construction began | 1939 |
| Opening date | 1941 |
| Dam and spillways | |
| Impounds | Tokachi River |
| Height | 37.2 m |
| Length | 190.5 m |
| Reservoir | |
| Total capacity | 9,026,000 m3 |
| Catchment area | 788 km2 |
| Surface area | 102 hectares |
The Iwamatsu Dam (岩松ダム) is a dam situated in Hokkaidō, Japan. Work began on the dam's construction in 1939. The construction was completed in 1941.