Akao Dam

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Akao Dam

Akao Dam.jpg

Downstream face
Japan location map with side map of the Ryukyu Islands.svg
Red pog.svg
Location of Akao Dam in Japan
Location Nishiakao, Toyama Prefecture, Japan
Coordinates 36°22′34.06″N136°52′13.95″E / 36.3761278°N 136.8705417°E / 36.3761278; 136.8705417 Coordinates: 36°22′34.06″N136°52′13.95″E / 36.3761278°N 136.8705417°E / 36.3761278; 136.8705417
Purpose Power
Status Operational
Construction began 1939
Opening date 1942
Dam and spillways
Type of dam Gravity
Impounds Shō River
Height 29.2 m (96 ft)
Length 153.4 m (503 ft)
Dam volume 28,000 m3 (37,000 cu yd)
Spillway type Crest overflow, 5 roller gates
Reservoir
Total capacity 1,465,000 m3 (1,188 acre⋅ft)
Active capacity 749,000 m3 (607 acre⋅ft)
Catchment area 778.1 km2 (300.4 sq mi)
Surface area .26 km2 (0.10 sq mi)
Normal elevation 336.7 m (1,105 ft)
Power Station
Operator(s) Kansai Electric Power Co., Inc.
Commission date 26 October 1978
Hydraulic head 17.4 m (57 ft)
Turbines 1 x 34 MW Kaplan-type
Installed capacity 34 MW

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]

Gravity dam

A gravity dam is a dam constructed from concrete or stone masonry and designed to hold back water by primarily using the weight of the material alone to resist the horizontal pressure of water pushing against it. Gravity dams are designed so that each section of the dam is stable, independent of any other dam section.

Shō River river in Japan

The Shō River has its source in Mount Eboshi in the Shōkawa-chō area of Takayama, Gifu Prefecture, Japan. After flowing for 115 km (71 mi) through the northern part of Gifu Prefecture and the western part of Toyama Prefecture, it empties into Toyama Bay.

Nanto, Toyama City in Chūbu, Japan

Nanto is a city in Toyama Prefecture, Japan.

See also

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References

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