The Akao Dam is a gravity dam on the Shō River in Nishiakao village about 18 km (11 mi) south of Nanto in Toyama Prefecture, Japan. It was constructed between 1974 and 1978. The dam has an associated 34 MW hydroelectric power station which was commissioned in 1978. Of the nine dams on the Shō River it is the fifth furthest downstream.[1]

Akao Dam
Downstream face
Akao Dam is located in Japan
Akao Dam
Location of Akao Dam in Japan
LocationNishiakao, Toyama Prefecture, Japan
Coordinates36°22′34.06″N 136°52′13.95″E / 36.3761278°N 136.8705417°E / 36.3761278; 136.8705417
PurposePower
StatusOperational
Construction began1939
Opening date1942
Dam and spillways
Type of damGravity
ImpoundsShō River
Height29.2 m (96 ft)
Length153.4 m (503 ft)
Dam volume28,000 m3 (37,000 cu yd)
Spillway typeCrest overflow, 5 roller gates
Reservoir
Total capacity1,465,000 m3 (1,188 acre⋅ft)
Active capacity749,000 m3 (607 acre⋅ft)
Catchment area778.1 km2 (300.4 sq mi)
Surface area.26 km2 (0.10 sq mi)
Normal elevation336.7 m (1,105 ft)
Power Station
Operator(s)Kansai Electric Power Co., Inc.
Commission date26 October 1978
Hydraulic head17.4 m (57 ft)
Turbines1 x 34 MW Kaplan-type
Installed capacity34 MW

See also

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References

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  1. ^ "Hydroelectric power plant Akao" (in Japanese). Suiryoku. Retrieved 16 July 2013.