Yamba Dam
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Content in this edit is translated from the existing Japanese Wikipedia article at [[:ja:八ッ場ダム]]; see its history for attribution. - You may also add the template
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| 八ッ場ダム Yamba Dam | |
|---|---|
| Location | Gunma Prefecture, Japan |
| Coordinates | 36°33′25′′N 138°42′51′′E / 36.55694°N 138.71417°E / 36.55694; 138.71417 |
| Construction began | 1967 |
| Opening date | 2019 |
| Construction cost | 532 Billion Yen |
| Dam and spillways | |
| Type of dam | Gravity |
| Impounds | Agatsuma River |
| Height | 131 m (430 ft) |
| Length | 336 m (1,102 ft) |
| Reservoir | |
| Creates | Lake Yamba-Agatsuma |
| Total capacity | 107,500,000 m3 (3.80×ばつ109 cu ft) |
| Catchment area | 707.9 km2 (273.3 sq mi) |
| Surface area | 304 hectares |
Yamba Dam (八ッ場ダム, Yamba damu) is a dam in Naganohara, Agatsuma District, Gunma Prefecture, Japan. Construction began in 1967, with effective completion in October 2019[1] and the official opening on 1 April 2020.
History
[edit ]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.
Test flooding of the reservoir began on 1 October 2019.[1]
Yamba Power Plant, an 11,700 kW hydroelectric station attached to the dam, began operation on 1 April 2021.[2] [3]
References
[edit ]This article incorporates material from the corresponding article in the Japanese Wikipedia.
- ^ a b 八ッ場ダム工事事務所. "八ッ場ダム試験湛>水を開始しました。" [Yamba Dam test flooding begins.] (PDF). 今日のやんば (Press release) (in Japanese). 国土交通省 関東地方整備局. Archived from the original (PDF) on 2022年08月04日. Retrieved 2019年10月14日.
- ^ "八ッ場発電所が完成しました" [Yamba Power Plant has been completed] (in Japanese). 群馬県. 2021年12月01日. Archived from the original on 2022年01月09日. Retrieved 2022年01月20日.
- ^ "クリーンエネルギーである水力発電の拡大に貢献 群馬県企業局・八ッ場発電所の水力発電設備が竣工しました" (in Japanese). 明電舎. 2021年07月07日. Archived from the original on 2021年07月07日. Retrieved 2021年08月26日.
