The Nanairo Dam (七色ダム, Nanairo-damu) is a concrete gravity-arch dam located in Kumano, Mie Prefecture, Japan. The dam crosses the Kitayama River, a tributary of the Kumano River near the border of Mie Prefecture with Wakayama Prefecture.[1]

Nanairo Dam
Official name七色ダム
LocationKumano, Mie Prefecture, Japan
Coordinates33°57′37″N 136°00′08″E / 33.96028°N 136.00222°E / 33.96028; 136.00222
Construction began1963
Opening date1965
Owner(s)Electric Power Development Company
Operator(s)Electric Power Development Company
Dam and spillways
Type of damArch-gravity dam
ImpoundsKitayama River of the Kumano River System
Height61 m (200 ft)
Length200.8 m (659 ft)
Reservoir
Total capacity61,300,000 m3 (49,700 acre⋅ft)
Catchment area462 km2 (178 sq mi)
Surface area332 ha (820 acres)
Power Station
Annual generation350 MW (470,000 hp)

The dam was constructed by Obayashi Corporation, with construction starting in 1963, and completed by 1965. It is currently owned maintained by the Electric Power Development Company. The primary purpose of the dam is hydroelectric power generation, with the dam supplying the nearby Ikehara Power Plant, with an installed turbine capacity of 350 megawatts (470,000 hp). The reservoir behind the dam also serves as a pumped storage facility in conjunction with neighboring Ikehara Dam in Wakayama.

References

edit
  1. ^ "Nanairo Dam [Mie Pref.] - Dams in Japan".