TOML

Rivers of Japan - TOML

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

[[items]]
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)"

[[items]]
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)"

[[items]]
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)"

[[items]]
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)"

[[items]]
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)"

[[items]]
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)"

[[items]]
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)"

[[items]]
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)"

[[items]]
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)"

[[items]]
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)"

[[items]]
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)"

[[items]]
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)"