Yanba Dam

Yanba Dam (八ッ場ダム, Yanba damu) is a dam in Naganohara, Agatsuma District, Gunma Prefecture, Japan. Construction began in 1967, with effective completion in October 2019 and the official opening on 1 April 2020.

八ッ場ダム
Yanba Dam
LocationGunma Prefecture, Japan
Coordinates36°33′25″N 138°42′51″E
Construction began1967
Opening date2019
Construction cost532 Billion Yen
Dam and spillways
ImpoundsAgatsuma River
Height131 m
Length336 m
Reservoir
CreatesLake Yanba-Agatsuma
Total capacity107,500,000 m³
Catchment area707.9 km²
Surface area304 hectares

Planning for the dam began in 1952, and it was planned to be completed by 2015. The dam's construction had seen sustained local opposition and a ballooning budget, and a change of National government in 2009 resulted in the project being halted, being about 70% completed at the time. Another change of government in 2012 resulted in the project being revived and subsequently completed.

Construction required the relocation of part of the Agatsuma Line, several roads and affected residents.

References

This article incorporates material from the corresponding article in the Japanese Wikipedia.


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