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
LocationGero, Gifu Prefecture, Japan
Coordinates35°45′39.8″N 137°09′25.8″E / 35.761056°N 137.157167°E / 35.761056; 137.157167
Construction began1966
Opening date1976
Dam and spillways
Impounds Maze River
Height127.5 meters
Length366.0 meters
Reservoir
Total capacity173,500,000 m3
Catchment area1,734.9 km2
Surface area424 hectares
Power Station
Installed capacity28.8 MW

157 households were flooded during the construction of the dam.

References edit

  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.