Soyama Dam

Soyama Dam
Power station (foreground), dam (background)
Location of Soyama Dam in Japan
Country	Japan
Location	Soyama, Toyama Prefecture
Coordinates	36°28′20.64″N 136°59′01.38″E
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.

See also

• Komaki Dam – downstream
• Ohara Dam – upstream