List of dams 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 (610 ft) high Kurobe Dam.

The largest dam by structural volume in the country is the Tokuyama Dam (pictured) with 13,700,000 m3 (17,900,000 cu yd) of rock-fill.

Tokuyama also creates Japan's largest reservoir with a water volume of 660,000,000 m3 (540,000 acre⋅ft).

[1] The dams are arranged by prefecture in the list below.