Maruyama Dam
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 was built after World War II as part of a large, nationwide dam building project.
| Maruyama Dam | |
|---|---|
|  | |
| Location | Mitake, Gifu Prefecture, Japan. | 
| Coordinates | 35°28′08.0″N 137°10′20.0″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 | 
Surrounding area
    
Sosui Gorge (蘇水峡 Sosui-kyō) was formed by the completion of the dam. Along with Ena Gorge further upstream, the area is part of the Hida-Kisogawa Quasi-National Park.

Maruyama Dam with Sosui Gorge behind it
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