Kōsaka Dam
Kosaka Dam (Japanese: 香坂ダム) is an embankment dam on the Kosaka river in the Saku, Nagano, Japan, completed in 1972.[1] The primary purpose is flood control, because villages in the Kosaka River basin suffered heavy damage from the floods.
Lake Kōsaka Dam
Kōsaka Dam office and spillway
| Kōsaka Dam | |
|---|---|
 | |
| Country | Japan |
| Location | Saku, Nagano |
| Coordinates | 36°15′54″N 138°32′55″E |
| Purpose | Flood control |
| Status | Operational |
| Construction began | 1969 |
| Opening date | 1972 |
| Construction cost | 1,222,000,000 JPY |
| Dam and spillways | |
| Type of dam | Embankment dam |
| Impounds | Kosaka river |
| Height (thalweg) | 38.5 m |
| Length | 184.0 m |
| Dam volume | 334,000 m3 |
| Reservoir | |
| Creates | Lake Kōsaka Dam |
| Total capacity | 1,050,000 m3 |
| Active capacity | 870,000 m3 |
| Catchment area | 14 km2 |
| Surface area | 11 ha |
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