This article may be expanded with text translated from the corresponding article in Japanese. (December 2008) 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. 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:碓氷湖]]; see its history for attribution. You should also add the template ((Translated|ja|碓氷湖)) to the talk page. For more guidance, see Wikipedia:Translation.
Sakamoto Dam
Lake Usui Sakamoto Dam.jpg
LocationGunma Prefecture, Japan.
Coordinates36°21′12″N 138°42′27.3″E / 36.35333°N 138.707583°E / 36.35333; 138.707583Coordinates: 36°21′12″N 138°42′27.3″E / 36.35333°N 138.707583°E / 36.35333; 138.707583
Construction began1985
Opening date1994; 28 years ago (1994)
Dam and spillways
Height36.3 m (119 ft)
Length85 m (279 ft)
CreatesLake Usui
Total capacity778,000 m3 (27,500,000 cu ft)
Catchment area13.7 km2 (5.3 sq mi)
Surface area7 hectares (17 acres)

Sakamoto Dam is a dam in the Gunma Prefecture of Japan. It forms Lake Usui.

Lake Usui
Lake Usui