Maruyama Dam
The  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  tall. It was built after World War II as part of a large, nationwide dam building project. 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. References

Dams in Gifu Prefecture
Hydroelectric power stations in Japan
Dams completed in 1955
1955 establishments in Japan