Kurobe Dam

Dam in Toyama Prefecture / From Wikipedia, the free encyclopedia

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The Kurobe Dam (黒部ダム) or Kuroyon Dam (黒四ダム), is a 186 m (610 ft) high variable-radius arch dam on the Kurobe River in Toyama Prefecture, Japan. The tallest dam in Japan,[1] it supports the 335 MW Kurobe No. 4 Hydropower Plant and is owned by Kansai Electric Power Company. It was constructed between 1956 and 1963 at a cost of 51.3 billion yen. The project was a difficult engineering feat for the rapidly growing post–World War II Japan, and claimed the lives of 171 people.[2]

Quick facts: Kurobe dam, Official name, Location, Coordina...
Kurobe dam
Orifice floodgates open
Kurobe Dam is located in Japan
Kurobe Dam
Location of Kurobe dam in Japan
Official name黒部ダム
LocationToyama Prefecture
Coordinates36°33′59″N 137°39′41″E
PurposePower, water supply
Construction began1956; 67 years ago (1956)
Opening date1963; 60 years ago (1963)
Construction cost¥51.3 billion $142.5 million (1963)
Operator(s)Kansai Electric Power Company
Dam and spillways
Type of damArch, variable-radius (dome)
ImpoundsKurobe River
Height186 m (610 ft)
Length492 m (1,614 ft)
Width (crest)8.1 m (27 ft)
Width (base)39.7 m (130 ft)
Dam volume1,582,845 m3 (2,070,283 cu yd)
Spillway typeService, uncontrolled overflow
Spillway capacity906 m3/s (32,000 cu ft/s)
CreatesKurobe Lake
Total capacity199,285,175 m3 (161,563.121 acre⋅ft)
Catchment area188.5 km2 (72.8 sq mi)
Surface area3.49 km2 (1.35 sq mi)
Power Station
Operator(s)Kansai Electric Power Company (KEPCO)
Commission date1961–1973
Turbines4 x Pelton-type
Installed capacity335 MW
Annual generation1 billion kWh