Soyama Dam

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Soyama Dam

Soyama power station and Soyama Dam.jpg

Power station (foreground), dam (background)
Japan location map with side map of the Ryukyu Islands.svg
Red pog.svg
Location of Soyama Dam in Japan
Country Japan
Location Soyama, Toyama Prefecture
Coordinates 36°28′20.64″N136°59′01.38″E / 36.4724000°N 136.9837167°E / 36.4724000; 136.9837167 Coordinates: 36°28′20.64″N136°59′01.38″E / 36.4724000°N 136.9837167°E / 36.4724000; 136.9837167
Purpose Power
Status Operational
Construction began 1927
Opening date 1930
Dam and spillways
Type of dam Gravity
Impounds Shō River
Height 73.2 m (240 ft)
Length 132 m (433 ft)
Dam volume 146,000 m3 (191,000 cu yd)
Spillway type Crest overflow, 12 tainter gates
Reservoir
Total capacity 33,850,000 m3 (27,440 acre⋅ft)
Active capacity 9,205,000 m3 (7,463 acre⋅ft)
Catchment area 929.4 km2 (358.8 sq mi)
Surface area 1.42 km2 (0.55 sq mi)
Normal elevation 248.3 m (815 ft)
Power Station
Operator(s) Kansai Electric Power Co., Inc.
Commission date Original: 5 December 1930
New: 25 February 1967
Hydraulic head Original: 67.20 m (220.5 ft)
New: 65.7 m (216 ft)
Turbines Original: 3 x 18.7 MW Francis-type
New: 1 x 72 MW Francis-type
Installed capacity 128.1 MW

The Soyama Dam is a gravity dam on the Shō River in Soyama village about 13 km (8.1 mi) southeast of Nanto in Toyama Prefecture, Japan. It was constructed between 1927 and 1930. The dam has an associated 128.1 MW hydroelectric power station which was built in two parts. The first part of the power station (56.1 MW) was commissioned in 1930 and the second part of the power station (72 MW) was commissioned in 1967. Of the nine dams on the Shō River it is the third 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 Soyama" (in Japanese). Suiryoku. Retrieved 16 July 2013.