Sakamoto Dam
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| Sakamoto Dam | |
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| Location | Gunma Prefecture, Japan. |
| Coordinates | 36°21′12″N 138°42′27.3″E / 36.35333°N 138.707583°E |
| Construction began | 1985 |
| Opening date | 1994 |
| Dam and spillways | |
| Type of dam | Gravity |
| Impounds | Usui River |
| Height | 36.3 m (119 ft) |
| Length | 85 m (279 ft) |
| Reservoir | |
| Creates | Lake Usui |
| Total capacity | 778,000 m3 (27,500,000 cu ft) |
| Catchment area | 13.7 km2 (5.3 sq mi) |
| Surface area | 7 hectares (17 acres) |
Sakamoto Dam is a dam in the Gunma Prefecture of Japan. It forms Lake Usui.
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