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List of rivers flowing through Yokohama City
You can find a list of rivers flowing through Yokohama City and its managers.
Last Updated June 10, 2024
- Yokohama City River Map
- River List (by water system)
- River extension and management classification
- "Yokohama River" Video and Pamphlet
Rivers flowing through Yokohama City
Yokohama City has 9 first-class rivers, 24 second-class rivers, and 23 mutatis mutandis rivers, totaling 56 rivers. The total length will be about 215 km.
River type
"First-class rivers" are rivers that are particularly important on the national land conservation or on the national economy, and are designated by the Minister of Land, Infrastructure, Transport and Tourism.
A "second-class river" means a river other than a first-class river that is important to public interest, and refers to a river designated by the prefectural governor.
"Mutualized rivers" means rivers designated by the mayor as important from the viewpoint of public nature, other than first-class rivers and second-class rivers.
Other than these three types are called "ordinary rivers", "general sewers" or "waterways".
Yokohama City River Map (a river that flows through Yokohama City)
River List (by water system)
The river becomes a large river as small rivers merge from the upstream, and gradually head toward the sea while repeating this junction. The unit of these groups of rivers is called a "water system."
The rivers that flow through Yokohama can be divided into the Tsurumi River, the Katabira River, the Okagawa River, the Sakaigawa River, and other rivers.
Click on the river name to see the river's management classification and extension.
※The same river may be divided into first-class rivers and mutatis mutandis rivers, and second-class rivers and mutatis mutandis rivers.
(1)Tsurumi River Water System
・First-class rivers: Tsurumi River, Onda River, Umeda River, Kamoi River, Okumakawa River, Toriyama River, Sunada River, Hayabuchi River, Yagami River
・Mutatis mutandis rivers: Kurosuda River, Nara River, Iwakawa, Hayabuchi River, Fukawa
(2)Katabira River Water System
・Second-class rivers: Katabira River, Naka-Horikawa, Ima Igawa, Ishizaki River, Aratama River, Saiwai River, Katabira River Channel
・Mutatis mutandis rivers: Shin-Igawa, Kunugidai River, Yasashi River
(3)Ookagawa Water System
・Second-class rivers: Ookagawa, Hino River, Naka-Murakawa, Horikawa, digging river, Okagawa diversion channel
・Mutatis mutandis rivers: Ookagawa, Hino River
(4)Sakaigawa Water System
・Second-class rivers: Sakaigawa, Kashio River, Akuwa River, Itachi River, Izumi River, Maioka River, Nasegawa River, Hirato Nagatani River, Udagawa
・Mutatis mutandis rivers: Kawakami River, Aizawa River, Seriya River, Maioka River
(5)Other water systems
・Second-class rivers: Samuraigawa, Miyakawa
・Mutatis mutandis rivers: Irie River, Irie River First School River, Irie River Second River, Irie River First Elementary School River, the Irie River Second Elementary School River, the Irie River No.
River extension and management classification
For river management, the river law stipulates the national, prefectural, and city management divisions for each river and its designated section.
The government manages the section of the Minister of Land, Infrastructure, Transport and Tourism of first-class rivers.
Kanagawa Prefecture manages the prefectural governor-designated section of first-class rivers, prefectural governor-managed sections of second-class rivers, and prefectural governor-managed mayor construction and maintenance sections.
Yokohama City manages the mayor-managed section of first-class rivers, mayor-managed sections of second-class rivers, and mutatis mutandis rivers.
How to view the River Extension and Management Category List
The following table shows the extension of management for each river.
For example, if it is the Tsurumi River, which is the number 1 of a first-class river.
The country manages 17,400m.
Kanagawa Prefecture manages 13,100 m.
Indicates that there is no management section of the mayor.
In addition, some rivers can fly to the river introduction page by clicking the river name.
First-class rivers (9 rivers)
Number | Water system name | River Name | Managed by the Minister of Land, Infrastructure, Transport and Tourism | Governor of prefectural governor | Mayor management | Total |
---|---|---|---|---|---|---|
1 | Tsurumi River Water System | Tsurumi River | 17,400(m) | 13,100(m) | -(m) | 30,500(m) |
2 | Tsurumi River Water System | Onda River | -(m) | 7,600(m) | -(m) | 7,600(m) |
3 | Tsurumi River Water System | Umeda River | -(m) | -(m) | 2,200(m) | 2,200(m) |
4 | Tsurumi River Water System | Kamoi River | -(m) | 100(m) | -(m) | 100(m) |
5 | Tsurumi River Water System | Okumakawa | -(m) | 2,840(m) | -(m) | 2,840(m) |
6 | Tsurumi River Water System | Toriyama River | 1,870(m) | -(m) | 2,310(m) | 4,180(m) |
7 | Tsurumi River Water System | Sunada River | -(m) | -(m) | 1,470(m) | 1,470(m) |
8 | Tsurumi River Water System | Hayabuchi River | 1,790(m) | 7,980(m) | -(m) | 9,770(m) |
9 | Tsurumi River Water System | Yagami River | 1,800(m) | 1,000(m) | -(m) | 2,800(m) |
- | A total of nine rivers | 22,860(m) | 32,620(m) | 5,980(m) | 61,460(m) |
Second-class rivers (24 rivers)
Number | Water system name | River Name | Managed by the Minister of Land, Infrastructure, Transport and Tourism | Governor of prefectural governor | Mayor management | Total |
---|---|---|---|---|---|---|
1 | Katabira River Water System | Katabira River | -(m) | 17,340(m) | -(m) | 17,340(m) |
2 | Katabira River Water System | Naka Horikawa | -(m) | 850(m) | -(m) | 850(m) |
3 | Katabira River Water System | Now Igawa | -(m) | 5,590(m) | -(m) | 5,590(m) |
4 | Katabira River Water System | Ishizaki River | -(m) | 1,600(m) | -(m) | 1,600(m) |
5 | Katabira River Water System | Aratama River | -(m) | 2,200(m) | -(m) | 2,200(m) |
6 | Katabira River Water System | Saiwai River | -(m) | 300(m) | -(m) | 300(m) |
7 | Katabira River Water System | Katabira River Waterway | -(m) | 6,610(m) | -(m) | 6,610(m) |
8 | Ookagawa Water System | Ookagawa | -(m) | 10,540(m) | -(m) | 10,540(m) |
9 | Ookagawa Water System | Hinokawa | -(m) | 1,900(m) | -(m) | 1,900(m) |
10 | Ookagawa Water System | Naka-Murakawa | -(m) | 3,000(m) | -(m) | 3,000(m) |
11 | Ookagawa Water System | Horikawa | -(m) | 900(m) | -(m) | 900(m) |
12 | Ookagawa Water System | Horiwari River | -(m) | 2,700(m) | -(m) | 2,700(m) |
13 | Ookagawa Water System | Ookagawa Waterway | -(m) | 3,640(m) | -(m) | 3,640(m) |
14 | Sakaigawa Water System | Sakaigawa | -(m) | 18,300(m) | -(m) | 18,300(m) |
15 | Sakaigawa Water System | Kashio River | -(m) | 7,030(m) | -(m) | 7,030(m) |
16 | Sakaigawa Water System | Hirato Ei Tanikawa | -(m) | -(m) | 4,920(m) | 4,920(m) |
17 | Sakaigawa Water System | Akuwa River | -(m) | 5,510(m) | -(m) | 5,510(m) |
18 | Sakaigawa Water System | Itachi River | -(m) | 7,180(m) | -(m) | 7,180(m) |
19 | Sakaigawa Water System | Izumi River | -(m) | 9,510(m) | -(m) | 9,510(m) |
20 | Sakaigawa Water System | Udagawa | -(m) | -(m) | 3,520(m) | 3,520(m) |
21 | Sakaigawa Water System | Maioka River | -(m) | 1,640(m) | -(m) | 1,640(m) |
22 | Sakaigawa Water System | Name Segawa | -(m) | 2,210(m) | -(m) | 2,210(m) |
23 | Samurai Water System | Samurai River | -(m) | 2,620(m) | -(m) | 2,620(m) |
24 | Miyakawa Water System | Miyakawa | -(m) | 2,040(m) | -(m) | 2,040(m) |
- | A total of 24 rivers | -(m) | 113,210(m) | 8,440(m) | 121,650(m) |
Mutatis mutandis rivers (23 rivers)
Number | Water system name | River Name | Managed by the Minister of Land, Infrastructure, Transport and Tourism | Governor of prefectural governor | Mayor management | Total |
---|---|---|---|---|---|---|
1 | Tsurumi River Water System | Kurosuda River | -(m) | -(m) | 2,820(m) | 2,820(m) |
2 | Tsurumi River Water System | Nara River | -(m) | -(m) | 3,470(m) | 3,470(m) |
3 | Tsurumi River Water System | Iwakawa | -(m) | -(m) | 1,980(m) | 1,980(m) |
4 | Tsurumi River Water System | Hayabuchi River | -(m) | -(m) | 1,020(m) | 1,020(m) |
5 | Tsurumi River Water System | Nunokawa | -(m) | -(m) | 780(m) | 780(m) |
6 | Irie river water system | Irie River | -(m) | -(m) | 2,390(m) | 2,390(m) |
7 | Irie river water system | Irie River First School River | -(m) | -(m) | 1,100(m) | 1,100(m) |
8 | Irie river water system | Irie River Second School River | -(m) | -(m) | 2,400(m) | 2,400(m) |
9 | Irie river water system | Irie River Daiichi Elementary School River | -(m) | -(m) | 330(m) | 330(m) |
10 | Irie river water system | Irie River Second Elementary School River | -(m) | -(m) | 300(m) | 300(m) |
11 | Irie river water system | Irie River Third Small School River | -(m) | -(m) | 450(m) | 450(m) |
12 | Irie river water system | Irie River 4th Elementary School River | -(m) | -(m) | 510(m) | 510(m) |
13 | Irie river water system | Irie River small school Tokiwa River | -(m) | -(m) | 620(m) | 620(m) |
14 | Takinogawa Water System | Waterfall river | -(m) | -(m) | 1,160(m) | 1,160(m) |
15 | Katabira River Water System | Shin-Igawa | -(m) | -(m) | 1,000(m) | 1,000(m) |
16 | Katabira River Water System | Kunugidai River | -(m) | -(m) | 1,190(m) | 1,190(m) |
17 | Katabira River Water System | Yasashigawa River | -(m) | -(m) | 540(m) | 540(m) |
18 | Ookagawa Water System | Ookagawa | -(m) | -(m) | 3,500(m) | 3,500(m) |
19 | Ookagawa Water System | Hinokawa | -(m) | -(m) | 970(m) | 970(m) |
20 | Sakaigawa Water System | Kawakami River | -(m) | -(m) | 1,470(m) | 1,470(m) |
21 | Sakaigawa Water System | Aizawa River | -(m) | -(m) | 2,158(m) | 2,158(m) |
22 | Sakaigawa Water System | Seriya River | -(m) | -(m) | 800(m) | 800(m) |
23 | Sakaigawa Water System | Maioka River | -(m) | -(m) | 510(m) | 510(m) |
- | A total of 23 rivers | -(m) | -(m) | 31,468(m) | 31,468(m) |
"Yokohama River" PR video and brochure
There is also a video and pamphlet explaining the river flowing through Yokohama City.
For more information, please check the "Yokohama River" PR video.
For more information, please refer to the "Yokohama River" brochure.
For inquiries to this page
Sewerage River Bureau River Department Planning Division
Phone: 045-671-4215
Phone: 045-671-4215
Fax: 045-651-0715
Email address: gk-kasenkikaku@city.yokohama.lg.jp
Page ID: 831-911-494