Ohara Dam

The Ohara Dam is a gravity dam on the Shō River in Ohara village about 17 km (11 mi) south of Nanto in Toyama Prefecture, Japan. It was constructed between 1939 and 1942. The dam has an associated 97.6 MW hydroelectric power station which was built in two parts. The first part of the power station (51.3 MW) was commissioned in 1942 and the second part of the power station (46.3 MW) was commissioned in 1980. Of the nine dams on the Shō River it is the fourth furthest downstream.[1]

Ohara Dam
Downstream face
Location of Ohara Dam in Japan
CountryJapan
LocationOhara, Toyama Prefecture
Coordinates36°24′03.97″N 136°54′32.51″E
PurposePower
StatusOperational
Construction began1939
Opening date1942
Dam and spillways
Type of damGravity
ImpoundsShō River
Height52 m (171 ft)
Length158.2 m (519 ft)
Dam volume93,000 m3 (122,000 cu yd)
Spillway typeCrest overflow, 8 tainter gates
Reservoir
Total capacity11,741,000 m3 (9,519 acre⋅ft)
Active capacity5,099,000 m3 (4,134 acre⋅ft)
Catchment area814.5 km2 (314.5 sq mi)
Surface area.56 km2 (0.22 sq mi)
Normal elevation318.6 m (1,045 ft)
Power Station
Operator(s)Kansai Electric Power Co., Inc.
Commission dateOriginal: 2 December 1942
New: 4 April 1980
Hydraulic headOriginal: 39.2 m (129 ft)
New: 52.6 m (173 ft)
TurbinesOriginal: 3 x 17.1 MW Francis-type
New: 1 x 46.3 MW Francis-type
Installed capacity97.6 MW

See also

References

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