page_title: List of dams and reservoirs in Japan
section_title: Gunma Prefecture
hierarchical_section_title: List of dams and reservoirs in Japan / Dams by prefecture / Gunma Prefecture
caption_attribution_description: English: Ueno Dam. 日本語: 上野ダム。
context_page_description: Below is a list of dams and reservoirs in Japan. As a nation of islands and narrow, steep valleys, dams play a vital role in Japanese society as they are constructed primarily to control floods, supply water and generate hydroelectric power. The tallest dam in Japan is the 186 m high Kurobe Dam. The largest dam by structural volume in the country is the Tokuyama Dam with 13,700,000 m³ of rock-fill. Tokuyama also creates Japan's largest reservoir with a water volume of 660,000,000 m³. Some of the dams are listed below by prefecture.
context_section_description: Aimata Dam
  Fujiwara Dam
  Kusaki Dam
  Nakagi Dam
  Naramata Dam
  Nozori Dam
  Sakamoto Dam
  Shimagawa Dam
  Shimokubo Dam
  Shinaki Dam
  Shinsui Dam
  Shirasuna Dam
  Sonohara Dam
  Sudagai Dam
  Takatsudo Dam
  Tamahara Dam
  Ueno Dam
  Yagisawa Dam
  Yanba Dam
caption: Ueno Dam
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