Location Tenryū, Nagano, Japan Type of dam Concrete gravity dam Length 258 m Height 62 m Impound Tenryū River | Opening date 1951 Impounds Tenryū River Dam volume 252,000 m³ Construction began 1938 | |
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Similar Hiraoka Station, Yasuoka Dam, Iwakura Dam, Katagiri Dam, Himekawa Dam | ||
hiraoka dam
Hiraoka Dam (平岡ダム, Hiraoka damu) is a dam in Tenryū, Nagano Prefecture, Japan, completed in 1951. It is located on the Tenryū River upstream from the Sakuma Dam.
During the Second World War prisoners of war held at Tokyo #2D (Mitsushima) Prisoner of War Camp provided labour to build the penstock tunnel to the powerstation, collect aggregate, and mix cement for the construction of the dam between November 1942 and August 1945. Fifty seven prisoners died from diseases relating to poor sanitary, diet, and climate conditions.
References
Hiraoka Dam Wikipedia(Text) CC BY-SA