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 high Kurobe Dam. The largest dam by structural volume in the country is the Tokuyama Dam (pictured) with of rock-fill. Tokuyama also creates Japan's largest reservoir with a water volume of .
The dams are arranged by prefecture in the list below.
Chubu region Aichi Fukui Gifu Ishikawa Nagano Niigata Shizuoka Toyama Yamanashi
Chugoku region Hiroshima Okayama Shimane Tottori Yamaguchi
Kansai region Hyogo Kyoto Mie Nara Osaka Shiga Wakayama
Kanto region Chiba Gunma Ibaraki Kanagawa Saitama Tochigi Tokyo
Kyushu region Fukuoka Kagoshima Kumamoto Miyazaki Nagasaki Okinawa Oita Saga
Hokkaido region Hokkaido
Shikoku region Ehime Kagawa Kochi Tokushima
Tohoku region Akita Aomori Fukushima Iwate Miyagi Yamagata
See also List of power stations in Japan List of dams and reservoirs
References