Yomasari Dam

Yomasari Dam
Official name 世増ダム
Location Aomori Prefecture, Japan
Coordinates 40°23′25″N 141°28′50″E / 40.39028°N 141.48056°E / 40.39028; 141.48056Coordinates: 40°23′25″N 141°28′50″E / 40.39028°N 141.48056°E / 40.39028; 141.48056
Construction began 1976
Opening date 2003
Operator(s) Ministry of Agriculture, Forestry and Fisheries (Japan)
Dam and spillways
Impounds Niida River
Height 52 meters
Length 247 meters
Reservoir
Creates Lake Aoba
Total capacity 36,500,000 m³
Catchment area 398 km²
Surface area 180 hectares

The Yomasari Dam (世増ダム Yomasari damu) is a dam on the Niida River, located in the city of Hachinohe, Aomori Prefecture in northern Honshū, Japan.

History

Yomasari Dam was designed as a multi-purpose dam, to provide for flood control in the event of heavy rains or typhoons, which had potential to flood downtown Hachinohe. The reservoir created was intended to provide water for tap water, as well as agricultural and industrial purposes, and to create a new recreational area for fishing and boating for the residents of Hachinohe. However, there is no hydroelectric power station associated with the dam.

Preliminary design work began on the Yomasari Dam in 1976, with main construction beginning in 1989, and was completed by 2003 by a consortium of the Obayashi Corporation, Sumitomo Mitsui Construction, and Tekken Corporation.

Design

The Yomasari Dam is a hollow-core concrete gravity dam with several central spillways.

References

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