| Ikawa Dam | |
|---|---|
 | |
| Official name | 井川ダム |
| Location | Shizuoka Prefecture, Japan |
| Coordinates | 35°12′38″N 138°13′22″E / 35.21056°N 138.22278°E |
| Construction began | 1952 |
| Opening date | 1957 |
| Operator(s) | Chubu Electric Power |
| Dam and spillways | |
| Type of dam | Gravity |
| Impounds | Ōi River |
| Height | 103.6 m (340 ft) |
| Length | 243 m (797 ft) |
| Reservoir | |
| Creates | Ikawa-ko |
| Total capacity | 150,000,000 m3 (5.3×109 cu ft) |
| Catchment area | 459.2 km2 (177.3 sq mi) |
| Surface area | 422 hectares |
The Ikawa Dam (井川ダム, Ikawa damu) is a dam on the Ōi River in Aoi-ku, Shizuoka, Shizuoka Prefecture on the island of Honshū, Japan. It was the first hollow core concrete gravity dam to be constructed in Japan, and has a hydroelectric power generating station owned by the Chubu Electric Power Company.