Maruyama Dam
| Maruyama Dam | |
|---|---|
| Location | Mitake, Gifu Prefecture, Japan. |
| Coordinates | 35°28′08.0″N 137°10′20.0″E / 35.468889°N 137.172222°E |
| Construction began | 1943 |
| Opening date | 1955 |
| Owner(s) | MLIT and Kansai Electric Power Company |
| Dam and spillways | |
| Impounds | Kiso River |
| Height | 98.2 m |
| Length | 260 m |
| Reservoir | |
| Total capacity | 79,520,000 m3 |
| Catchment area | 2,409.0 km2 |
| Surface area | 263 hectares |
The Maruyama Dam (丸山ダム, Maruyama Damu) is a dam on the border of Mitake and Yaotsu in Gifu Prefecture, Japan. It was built on the upper reaches of the Kiso River system. It is a gravity dam that is 98.2 m (322 ft) tall. It is the site of a power plant.
It was built after World War II as part of a large, nationwide dam building project.