Iwaya Dam

The Iwaya Dam (Iwaya Damu) is a dam in the city of Gero, Gifu Prefecture, Japan on the Maze River, part of the Kiso River system. The dam is a rockfill dam with a height of 127 meters and was constructed as a multipurpose dam for flood control, supply of municipal and industrial water, irrigation water and hydroelectric power generation. The reservoir created by the dam supplies the Chubu Electric Power Company's Mazegawa No.1 Power plant with a capacity of 288 MW hydroelectric power station.[1]

Iwaya Dam
Official name	岩屋ダム
Location	Gero, Gifu Prefecture, Japan
Coordinates	35°45′39.8″N 137°09′25.8″E
Construction began	1966
Opening date	1976
Dam and spillways
Impounds	Maze River
Height	127.5 meters
Length	366.0 meters
Reservoir
Total capacity	173,500,000 m³
Catchment area	1,734.9 km²
Surface area	424 hectares
Power Station
Installed capacity	28.8 MW

References

1. "Hydropower & Dams in South and East Asia" (PDF). Hydropower and Dams. p. 9. Archived from the original (PDF) on 2 September 2017. Retrieved 3 October 2010.