Isawa Dam (胆沢ダム) is an embankment dam on the Isawa River in Iwate Prefecture, Japan.^[2] It was constructed between 1983 and 2013. Its reservoir, which submerged the smaller Ishibuchi Dam upstream, was full in May 2013.^[3] The dam's 15.7 MW power station was expected to be operational in July 2014.^[1]

Quick Facts Location, Coordinates ...

Isawa Dam
Location of Isawa Dam in Japan
Location	Iwate Prefecture, Japan
Coordinates	39°06′48.0″N 140°54′13.0″E
Purpose	Flood control, power, irrigation
Construction began	1983
Opening date	2013
Dam and spillways
Type of dam	Embankment, rock-fill
Impounds	Isawa River
Height	132 m (433 ft)
Length	723 m (2,372 ft)
Dam volume	13,500,000 m3 (17,700,000 cu yd)
Reservoir
Total capacity	143,000,000 m3 (116,000 acre⋅ft)
Active capacity	132,000,000 m3 (107,000 acre⋅ft)
Catchment area	185 km2 (71 sq mi)
Surface area	440 ha (1,100 acres)
Power Station
Commission date	2014
Hydraulic head	100.7–105.2 m (330–345 ft) (effective)
Turbines	1 × 10.7 MW, 1 × 3.5 MW, 1 × 1.5 MW Francis-type
Installed capacity	15.7 MW[1]

Close