| 1．Arakawa River (Kantō) |
| The Arakawa River or Ara River (Japanese: 荒川, Hepburn: Arakawa, "kawa" (川) already means "river") is a 173-kilometre (107 mi) long river that flows through Saitama Prefecture and Tokyo.[1] Its average flow in 2002 was 30 m3/s. It originates on Mount Kobushi in Saitama Prefecture, and empties into Tokyo Bay.[2] It has a total catchment area of 2,940 km2 (1,140 sq mi). |
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| 2．Nihonbashi River |
| The Nihonbashi River (日本橋川, Nihonbashi-gawa) is a river which flows through central Tokyo, Japan. It is a distributary river of the Kanda River and flows into the Sumida River near the Eitai Bridge. The river is 4.8 km (3.0 mi) in length and passes through Chiyoda and Chuo wards. The river was created by a re-channeling of the former Hira River in the 15th century at the direction of Ōta Dōkan to form a part of the external fortifications and water management plan for Edo Castle.[1] |
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| 3．Shiodome |
| Shiodome (汐留) is an area in Minato, Tokyo, Japan, located adjacent to Shinbashi and Ginza, near Tokyo Bay and the Hamarikyu Gardens. Formerly a railway terminal, Shiodome has been transformed into one of Tokyo's most modern areas. It is a collection of 11 tiny town districts or cooperative zones, but generally there are three main areas: |
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| 4．Ariake West Canal |
| The Ariake West Canal is a canal located between Ariake, Koto-ku, in Tokyo and Odaiba, Minato-ku.[1][2] It is located between Ariake at No. 10 and Daiba at No. 13 in the reclaimed land of Tokyo Bay. Both banks are part of Tokyo Waterfront City, and there are many bridges, like Yume no Ohashi, are at short intervals for transit between the two sides.[3] There are also water bus routes for Tokyo Cruise Ship and Tokyo Mizube Line. The cauldron for the 2020 Summer Olympics was installed at Tokyo Waterfront City.[4][5][6] |
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| 5．Tama River |
| The Tama River (多摩川, Tama-gawa) is a major river in Yamanashi, Kanagawa and Tokyo Prefectures on Honshū, Japan. It is officially classified as a Class 1 river by the Japanese government. It is 138 kilometres (86 mi) long, and has a 1,240 square kilometres (480 sq mi) basin. The river flows through the Greater Tokyo Area, on the dividing line between Tokyo and Kanagawa Prefectures. In Tokyo, its banks are lined with parks and sports fields, making the river a popular picnic spot. |
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| 6．Meguro River |
| The Meguro River (目黒川, Meguro-gawa) is a river which flows through Tokyo, Japan. Its tributaries include the Kitazawa River and the Karasuyama River. The river flows into Tokyo Bay near the Tennōzu Isle Station. The river is 7.82 km (4.86 mi) in length and passes through Setagaya, Meguro and Shinagawa wards. |
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| 7．Shibuya River |
| The Shibuya River (渋谷川, Shibuya-gawa) is a river which flows through central Tokyo, Japan. The river is 2.6 km in length originating close to Shibuya Station and passing through Shibuya and Minato wards before merging with the Furu River near Hiroo and flowing into Tokyo Bay near Shiba Koen.[1][2] The Inner Circular Route is built above the lower course of the river. |
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| 8．Myōshōji River |
| The Myōshōji River (妙正寺川, Myōshōji-gawa) is designated as a Class A river by the Japanese government with a length of 9.7 km and a basin area of 21.4 km². |
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| 9．Sumida River |
| The Sumida River (隅田川, Sumida-gawa) is a river that flows through central Tokyo, Japan. It branches from the Arakawa River at Iwabuchi (in Kita-ku) and flows into Tokyo Bay. Its tributaries include the Kanda and Shakujii rivers. It passes through the Kita, Adachi, Arakawa, Sumida, Taitō, Kōtō and Chūō wards of Tokyo. |
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| 10．Egota River |
| The Egota River (江古田川, Egota-gawa) is designated as a Class A river by the Japanese government with a length of 1.64 km and a basin area of 5.0 km². It used to flow through Naka-arai Village (中新井村, Naka-arai-mura) and so it also used to be called the Naka-arai River (中新井川, Naka-arai-gawa). The open-ditch section of the river is under 2 km in length. |
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| 11．Shakujii River |
| The Shakujii River (石神井川, Shakujii-gawa) is a river which flows through the northwest quadrant of central Tokyo, Japan. It is one of the tributaries of the Arakawa River. With a total length of 25.2 kilometres (15.7 mi) and a drainage basin of 61.6 square kilometres (23.8 sq mi), it is categorized as a Class A river by the Japanese government. |
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| 12．Naka River (Saitama Tokyo) |
| 35°39′37″N 139°51′00″E / 35.660321°N 139.849917°E / 35.660321; 139.849917 The Naka River (中川, Naka-gawa) is a river that flows from Hanyu, Saitama to Edogawa, Tokyo, Japan, where it merges with the Arakawa River. It is 83.7 kilometres (52.0 mi) long. |
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| 13．Kanda River |
| The Kanda River (神田川, Kandagawa) stretches 24.6 km from Inokashira Park in Mitaka to the Sumida River under the Ryōgoku Bridge at the boundary of Taitō, Chūō, and Sumida. Its entire length lies within Tokyo, Japan. It drains an area of 105.0 km². The government of Japan classifies it as a Class I river. |
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| 14．Tamagawa Aqueduct |
| Tamagawa Aqueduct (玉川上水, Tamagawa Jōsui) is a 43 km long Japanese aqueduct located in Tokyo. It was constructed by the Tokugawa shogunate to supply drinking and fire-fighting water from the Tama river to Edo, providing irrigation water around farm villages. The aqueduct was made following a request for permission from the people of Kojimachi and Shibaguchi to build another aqueduct, drawing the waters of the Tama river. The government provided 7,500 ryō for the construction, 3,000 ryō were collected by public subscription. Construction on the 43 km long aqueduct, which runs from Hamura, Tokyo to Yotsuya, Tokyo, began in April 1653. The section from Hanemura to Ōkido [ja] was fully excavated within eight months and the entire aqueduct was completed in eighteen months. The project was undertaken by the Seiemon brothers who were awarded the surname "Tamagawa" in honour of their accomplishment. Prior to the construction, the two brothers were considered "mere peasants".[1][2] Before the construction of the aqueduct the city was served by a single, and insufficient, Kanda Aqueduct.[3] |
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| 15．Sakai River (Tokyo, Kanagawa) |
| The Sakai River (境川, Sakai-gawa) is a Class B river in Tokyo and Kanagawa Prefecture which flows into the Bay of Sagami of the Pacific Ocean. |
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| 16．Asa River (Japan) |
| Asa River (浅川, Asa-kawa) is a tributary of the Tama River in Tokyo, Japan. It is 30.15 km long, flowing from mountains in Hachiōji to the Tama in the city of Hino.[1] 35°39′44″N 139°25′58″E / 35.662195°N 139.43275°E / 35.662195; 139.43275 (mouth) |
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| 17．Nogawa River |
| The Nogawa River (野川, No-gawa) is a river which flows through the west side of central Tokyo, Japan in an area known as the Musashino Terrace. The source of the river is associated with the Ohike Pond in the gardens of the Hitachi Central Research Laboratory [1] just west of Kokubunji Station in the city of Kokubunji.[2] It flows south and then east (receiving water from springs in the adjacent Tonogayato Garden). Having entered Fuchu it then proceeds in an south-easterly direction through the cities of Koganei, Mitaka and Chofu. From Chofu it briefly enters Komae City before crossing into the special ward of Setagaya from where it finally empties into the Tama River close to Futakotamagawa Station. The confluence point is near to the parallel bridges carrying national route 246 and the Tōkyū Den-en-toshi Line/Tōkyū Ōimachi Line over the Tama River. |
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| 18．Senkawa Aqueduct |
| Senkawa Aqueduct (千川上水, Senkawa Jōsui) is a 22 km long Japanese aqueduct located in Tokyo.[1] |
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| 19．Aki River |
| 35°43′00″N 139°19′21″E / 35.716737°N 139.322396°E / 35.716737; 139.322396 The Aki River (also, the Akikawa River)[1] is a river in Japan.[2][3] The Aki River flows west of Tokyo Metropolitan Area. It is a major tributary of the Tama River,[4][5] The Japanese name, 秋川, means "Autumn River."[6][7] The words Akigawa River sound a bit odd, as kawa and gawa, 川, are Japanese words for river,[8][9] so Aki River makes more sense, or simply Akigawa, perhaps Akikawa. |
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