List of dams in Japan
# 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 $m^3$ (17,900,000 cu yd) of rock-fill. Tokuyama also creates Japan's largest reservoir with a water volume of 660,000,000 $m^3$ (540,000 acre⋅ft).

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
