Hiraoka Dam (平岡ダム, Hiraoka damu) is a dam in Tenryū, Nagano Prefecture, Japan, completed in 1951.[1] It is located on the Tenryū River upstream from the Sakuma Dam.

This article may be expanded with text translated from the corresponding article in Japanese. (July 2011) Click [show] for important translation instructions. View a machine-translated version of the Japanese article. Machine translation like DeepL or Google Translate is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 3,123 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Japanese Wikipedia article at [[:ja:平岡ダム]]; see its history for attribution. You should also add the template {{Translated|ja|平岡ダム}} to the talk page. For more guidance, see Wikipedia:Translation.

Hiraoka Dam
Location	Tenryū, Nagano, Japan
Construction began	1938
Opening date	1951
Dam and spillways
Type of dam	Concrete gravity dam
Impounds	Tenryū River
Height	62.5 m
Length	258 m
Dam volume	252,000 m³
Reservoir
Total capacity	42,425,000 m³
Catchment area	3,650 km²
Surface area	258 ha

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.

See also

Wikimedia Commons has media related to Hiraoka Dam.

• List of dams and reservoirs in Japan

References

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На других языках

[fr] Barrage d'Hiraoka