INI

Rivers of Japan - INI

Japan's rivers are characterized by many short, rapid-flowing rivers due to the topographical feature that approximately 70% of the country is mountainous. There are approximately 35,000 rivers nationwide, of which 109 river systems with 14,083 rivers are designated as first-class rivers, and 2,710 river systems with 7,081 rivers are designated as second-class rivers. The Shinano River (367km) is the longest in Japan, while the Tone River holds the record for the largest basin area at 16,840km². These rivers are managed by the Ministry of Land, Infrastructure, Transport and Tourism and respective prefectures from the perspectives of flood control, water utilization, and environmental conservation.

rivers first-class rivers second-class rivers Shinano River Tone River MLIT flood control water utilization

[item.shinano-river]
code=01
slug=shinano-river
name=Shinano River
description=The longest river in Japan, flowing from Nagano Prefecture to Niigata Prefecture into the Sea of Japan.
basinAreaKm2=11900
lengthKm=367
mouth=Sea of Japan (Niigata City)
prefectures=["長野県","新潟県"]
ranking=1
riverClass=一級河川
source=Mount Kobushi (Nagano Prefecture)

[item.tone-river]
code=02
slug=tone-river
name=Tone River
description=The river with the largest basin area in Japan, flowing through the Kanto Plain into the Pacific Ocean.
basinAreaKm2=16840
lengthKm=322
mouth=Pacific Ocean (Choshi City)
prefectures=["群馬県","栃木県","埼玉県","茨城県","千葉県","東京都"]
ranking=2
riverClass=一級河川
source=Mount Ominesan (Gunma Prefecture)

[item.ishikari-river]
code=03
slug=ishikari-river
name=Ishikari River
description=The longest river in Hokkaido, famous for salmon fishing.
basinAreaKm2=14330
lengthKm=268
mouth=Sea of Japan (Ishikari City)
prefectures=["北海道"]
ranking=3
riverClass=一級河川
source=Mount Ishikari (Hokkaido)

[item.teshio-river]
code=04
slug=teshio-river
name=Teshio River
description=The second longest river in Hokkaido, known as a famous canoeing spot.
basinAreaKm2=5590
lengthKm=256
mouth=Sea of Japan (Teshio Town)
prefectures=["北海道"]
ranking=4
riverClass=一級河川
source=Mount Teshio (Hokkaido)

[item.kitakami-river]
code=05
slug=kitakami-river
name=Kitakami River
description=A representative river of the Tohoku region, famous for the cherry blossom trees at Kitakami Tenshochi.
basinAreaKm2=10150
lengthKm=249
mouth=Pacific Ocean (Ishinomaki City)
prefectures=["岩手県","宮城県"]
ranking=5
riverClass=一級河川
source=Yumiya-no-Izumi spring (Iwate Prefecture)

[item.abukuma-river]
code=06
slug=abukuma-river
name=Abukuma River
description=A river flowing through Fukushima and Miyagi prefectures, with tourist attractions such as the Abukuma Line boat tours.
basinAreaKm2=5400
lengthKm=239
mouth=Pacific Ocean (Sendai Plain)
prefectures=["福島県","宮城県"]
ranking=6
riverClass=一級河川
source=Mount Asahi (Fukushima Prefecture)

[item.mogami-river]
code=07
slug=mogami-river
name=Mogami River
description=A rapid river flowing through Yamagata Prefecture, known from Matsuo Basho's haiku.
basinAreaKm2=7040
lengthKm=229
mouth=Sea of Japan (Sakata City)
prefectures=["山形県"]
ranking=7
riverClass=一級河川
source=Mount Azuma (Yamagata Prefecture)

[item.kiso-river]
code=08
slug=kiso-river
name=Kiso River
description=A river flowing from Nagano Prefecture to Mie Prefecture into Ise Bay.
basinAreaKm2=9100
lengthKm=229
mouth=Ise Bay
prefectures=["長野県","岐阜県","愛知県","三重県"]
ranking=7
riverClass=一級河川
source=Mount Hachimori (Nagano Prefecture)

[item.tenryu-river]
code=09
slug=tenryu-river
name=Tenryu River
description=A river flowing through Nagano, Aichi, and Shizuoka prefectures into the Enshu Sea.
basinAreaKm2=5050
lengthKm=213
mouth=Pacific Ocean (Enshu Sea)
prefectures=["長野県","愛知県","静岡県"]
ranking=9
riverClass=一級河川
source=Lake Suwa (Nagano Prefecture)

[item.aganogawa-river]
code=10
slug=aganogawa-river
name=Agano River
description=A river flowing through Fukushima and Niigata prefectures, winding through deep mountains.
basinAreaKm2=7710
lengthKm=210
mouth=Sea of Japan (Niigata City)
prefectures=["福島県","新潟県"]
ranking=10
riverClass=一級河川
source=Mount Araumi (Fukushima Prefecture)

[item.fuji-river]
code=15
slug=fuji-river
name=Fuji River
description=One of Japan's three great rapid rivers, flowing through Shizuoka Prefecture.
basinAreaKm2=3990
lengthKm=128
mouth=Suruga Bay
prefectures=["長野県","山梨県","静岡県"]
ranking=15
riverClass=一級河川
source=Mount Noko (Yamanashi Prefecture)

[item.yodo-river]
code=B7
slug=yodo-river
name=Yodo River
description=A river flowing through the center of the Kinki region, with the largest basin population in western Japan.
basinAreaKm2=8240
lengthKm=75
mouth=Osaka Bay
prefectures=["滋賀県","京都府","大阪府","兵庫県","奈良県","三重県"]
ranking=
riverClass=一級河川
source=Lake Biwa (Shiga Prefecture)