| Yagisawa Dam | |
| Dam Crosses: | Tone River |
| Dam Type: | Arch-Gravity |
| Res Name: | Lake Oku-Tone |
| Location: | Minakami, Gunma Prefecture, Japan. |
| Dam Length: | 352m (1,155feet) |
| Dam Height: | 131m (430feet) |
| Construction Began: | 1959 |
| Opening: | 1967 |
| Res Capacity Total: | 204300000m2 |
| Res Catchment: | 167.4km2 |
| Res Surface: | 570 hectares |
| Coordinates: | 36.9114°N 139.0564°W |
is a dam in the Gunma Prefecture of Japan; it supports a 240 MW hydroelectric power station.[1]