Minamiaiki Dam

#653 among destinations in Japan

Dam

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Facts and practical information

The Minamiaiki Dam is a rock-fill embankment dam on the Minamiaiki River in Minamiaiki, Nagano Prefecture, Japan. Together with the Ueno Dam, it provides water for the Kannagawa Hydropower Plant owned by the Tokyo Electric Power Company. The Minamiaiki dam is the higher of the two dams. When completed, the station will have the largest power output of any pump-storage power plant in the world at around 2.82 GW. Since 2005 Unit 1 with installed capacity of 470 MW is in commercial operation. Commercial operation of Unit 2 is planned in 2012, commercial operation of all six units as late as 2020. ()

Local name: 南相木ダム Opened: 2005 (20 years ago)Length: 1457 ftHeight: 446 ftCoordinates: 36°0'16"N, 138°39'14"E

Location

NaganoJapan

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Day trips

Minamiaiki Dam – popular in the area (distance from the attraction)

Nearby attractions include: Ueno Dam, Mount Ogura, Mount Takamagahara.

4.3 miNE
Dam, Reservoir
Ueno Dam
111 min walk • Ueno Dam is a concrete gravity dam in the Gunma Prefecture of Japan. The dam serves as the lower reservoir of the Kannagawa Hydropower Plant. Because of the dams remote location deep in the hillside, no houses were submerged.
3.3 miNW
Nature, Natural attraction, Mountain
Mount Ogura
85 min walk • Mount Ogura is a mountain located between Kitaaiki and Minamiaiki Villages, Minamisaku District, Nagano Prefecture, Japan. With its summit being 2,112 meters above sea level, it is the tallest mountain in Minamiaiki, Nagano.
2.1 miSE
Nature, Natural attraction, Mountain
Mount Takamagahara
55 min walk • Mount Takamagahara is a mountain in the Gunma Prefecture of Japan, near Ueno village. Its measurement is 1,978.6 metres tall. Takamagahara is the world of heaven in mythology.