List of rivers of Japan

Rivers of Japan are characterized by their relatively short lengths and considerably steep gradients due to the narrow and mountainous topography of the country. An often-cited quote is 'this is not a river, but a waterfall' by the Dutch engineer (o-yatoi gaikokujin) Johannis de Rijke who had visited the Jōganji River, Toyama Prefecture. The Mogami, the Fuji and the Kuma are regarded as the three most rapid rivers of Japan.

Typical rivers of Japan rise from mountainous forests and cut out deep V-shaped valleys in their upper reaches, and form alluvial plains in their lower reaches which enable the Japanese to cultivate rice fields and to set up cities. Most rivers are dammed to supply both water and electricity.

The longest river of Japan is the Shinano, which flows from Nagano to Niigata. The Tone has the largest watershed and serves water to more than 30 million inhabitants of Tokyo metropolitan area.

Hokkaidō There are 326 rivers in Hokkaido, including 13 designated by the central government. The class A rivers are administered by . There are six class B river systems.

The following table lists the rivers of Hokkaidō by length. Use the column headers to sort by name, class, or tributary status.

River name Length Class Tributary of Refs A A A A A Ishikari A A A A A Ishikari A B A A B A B A Ishikari B A B B A A Toyohira A Toyohira

Honshu Rivers are listed by length. Columns can also be sorted by name, class, and tributary status.

River name Length Class Tributary of Refs A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A Yodo A A A Yodo A A A A A A A A A A A A A A A A A A B A A Yodo A A A A A Tone A A A A A A A A A A A A A Yodo A A A Arakawa A A Arakawa A B A Yodo

Shikoku First class rivers under control of Shikoku Regional Bureau (四国地方整備局) Yoshino-gawa (吉野川) - Kochi, Ehime, Tokushima, Kagawa Naka-gawa (那賀川) - Tokushima Doki-gawa (土器川) - Kagawa Shigenobu-gawa (重信川) - Ehime Hiji-kawa (肱川) - Ehime Monobe-kawa (物部川) - Kochi Niyodo-gawa (仁淀川) - Ehime, Kochi Shimanto-gawa (四万十川) - Ehime, Kochi

Kyūshū First class rivers under control of Kyushu Regional Bureau (九州地方整備局)

Onga-gawa (遠賀川) - Fukuoka Yamakuni-gawa (山国川) - Oita, Fukuoka Chikugo-gawa (筑後川) - Kumamoto, Oita, Fukuoka, Saga Yabe-gawa (矢部川) - Fukuoka Matsuura-gawa (松浦川) - Saga Rokkaku-gawa (六角川) - Saga Kase-gawa (嘉瀬川) - Saga Honmyo-gawa (本明川) - Nagasaki Kikuchi-gawa (菊池川) - Kumamoto Shira-kawa (白川) - Kumamoto Midori-gawa (緑川) - Kumamoto Kuma-gawa (球磨川) - Kumamoto Ōita-gawa (大分川) - Ōita Ōno-gawa (大野川) - Kumamoto, Miyazaki, Ōita Banjo-gawa (番匠川) - Ōita Gokase-gawa (五ヶ瀬川) - Kumamoto, Ōita, Miyazaki Omaru-gawa (小丸川) - Miyazaki Ōyodo-gawa (大淀川) - Kagoshima, Kumamoto, Miyazaki Sendai-gawa (川内川) - Miyazaki, Kagoshima Kimotsuki-gawa (肝属川, 肝付川) - Kagoshima

List of rivers of Japan

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