Tsubawara Dam

The Tsubawara Dam, also known as the Tsubakihara Dam, is a gravity dam on the Shō River about 5 km (3.1 mi) north of Shirakawa in Gifu Prefecture, Japan. It was constructed between 1952 and 1953. The dam has an associated 107 MW hydroelectric power station which was built in two parts. The first part of the power station (42 MW) was commissioned in 1954 and the second part of the power station (65 MW) was commissioned in 1975. Of the nine dams on the Shō River it is the seventh furthest downstream.[1][2]

Tsubawara Dam
Overview of the dam in 1977
Location of Tsubawara Dam in Japan
Country	Japan
Location	Shirakawa, Gifu Prefecture
Coordinates	36°18′45″N 136°53′51″E
Purpose	Power
Status	Operational
Construction began	1952
Opening date	1953
Dam and spillways
Type of dam	Gravity
Impounds	Shō River
Height	68.2 m (224 ft)
Length	201.7 m (662 ft)
Dam volume	163,000 m3 (213,000 cu yd)
Spillway type	Crest overflow, 7 tainter gates
Reservoir
Total capacity	22,274,000 m3 (18,058 acre⋅ft)
Active capacity	5,788,000 m3 (4,692 acre⋅ft)
Catchment area	665.7 km2 (257.0 sq mi)
Surface area	1.16 km2 (0.45 sq mi)
Normal elevation	460.5 m (1,511 ft)
Power Station
Operator(s)	Kansai Electric Power Co., Inc.
Commission date	Original: 8 January 1954 New: 27 March 1975
Hydraulic head	Original: 65.30 m (214.2 ft) New: 62 m (203 ft)
Turbines	Original: 1 x 42 MW Francis-type New: 1 x 65 MW Francis-type
Installed capacity	107 MW