[Japan Water Agency / JWA] Water resources development of seven river systems.

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Dams, Canals Kanto Area

Boso Canal

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By BusBy TrainBy Car
1.Industrial water
Max. 3.500m³/s
2.Domestic water
Max. 4.900m³/s
Benefited Area
Chiba Pref.
Chiba City, Ichikawa City, Funabashi City, Matsudo City, Narashino City, Kamagaya City, Urayasu City, Narita City, Inzai City, Siroi City, Ichihara City, Sodegaura City, Kisarazu City, Kimitsu City, Sakura City, Mobara City, Togane City, Katsuura City, Kamogawa City, Tateyama City, Isumi City, Sosa City, Minamiboso City, Sanmu City, Ooamishirasato City, Yokoshibahikari City, Kujyukuri Town, Shirako Town, Nagara Town, Chosei Village, Chonan Town, Ichinomiya Town, Mutsuzawa Town, Otaki Town, Onjyuku Town, Kyonan Town
Both north and south canals’ common facilities
Tone River Intake Works (Max. 17.47m³/s), No.1 Canal 1.2km, north main canal 7.5km (Max 17.47m³/s), pumping station: 1 spot, Kuriyama River use 23.1km (Max 17.47m³/s) Regulating Weir: 1 spot,
Boso Canal-main faciities
Canal 35.1km (Max. 13.0m³/s), Pumping Station: 3 spots, Diversion Works: 1 spot, Nagara Dam, Togane Dam, Sakata Regulating pond
Minamiboso canal facilities:
Canal 31.8km (Max. o.50m³/s), Pumping Station: 1 spot,
Common operations
Operation and Maintenance Office: 1 office, Solar power generation equipment: 1 unit (Max. 50kw)
Completion 2004
Details Boso Canal was constructed to supply Chiba coastal industrial belt along Tokyo Bay from Chiba City to Kimitsu City and their surrounding areas with industrial water and Chiba City, Kujyukuri coastal area and southern Boso area with domestic water, and its management operation started in April 2005, with the water sources from Naramata Dam and others.
Canal water is taken from the right bank of Tone River at Ryoso Canal No.1 Pumping station in Sawara area, Katori City, Chiba Prefecture with max. water intake of 17.47m³/s. Then water runs through about 32km of Ryoso Canal common use facilities, about 35km of Boso Canal’s basic canal facilities and approx. 31km of Minamiboso Canal facilities to reach the destination.


455 Ikeda, Oamishirasato City, Chiba Pref.
Phone No.


Train and car
Apprx.20 min. by walking from Oami sta. of JR Sotobo Line

Tourist Spots

Tokyo Water Science Museum
Tokyo Water Science MuseumThis museum is located about 10 minute walk from Kokusaitenjijyo Station near Big Site Exhibition Hall in Yumenoshima Island.To celebrate 100th water works service history, Tokyo municipal government opened this museum in 1997 at Yumenoshima Island. The entire facility is dedicated for the hands-on learning of water and how it is delivered, including the explanation of equipment and numerous facilities which make it possible to deliver safe and clean water to Tokyo. Your kids will be thrilled to learn the valuable lessons through such hands-on experiments and other experiences.
Photo by "Tokyo Water Science Museum" HP
See more ->Tokyo Water Science Museum PDF
Namikiri Fudo Temple
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Photo by "Sanmu City" HP
See more ->Sanmu City
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Photo by "Kasamori-Kannon Temple Japanese" HP
See more ->Kasamori-Kannon Temple Japanese


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