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

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

Home > Dams, Canals > Kanto Area > Toso Canal

Dams, Canals Kanto Area

Toso Canal

Tourist Spots
By BusBy TrainBy Car
1.Irrigation water
Max. intake: approx. 2m³/s (Benefited land: approx. 2,800 ha)
2.Domestic water
Max. intake: approx. 1m³/s (Water supply population: approx. 200,000)
Benefited Area
Chiba Pref.
Choshi City, Asahi City, Tohnosho Town
Facilities Tone River Intake Facilities (Ichinowakeme Intake Works,Ichinowakeme Pumping Station)
Kurobe River Intake Facilities [Sasagawa Intake Works, Canal (Length= approx. 850m), Tonosho Pumping Station. Unakami Pressure Pumping Station, Regulating Tank Connection Chanel(Length: approx. 12.5km), Iioka Regulating Tank]
Water Conveyance Facility [Main canal (Length=Approx. 8.2km), Lateral canal (Length= approx. 15.5km), Farm Pond (18 spots) Operation Equipment, etc.]
Completion 1988
Details Toso Canal was constructed for the purpose of supplying 2,800 ha of farmland covering 2 cities and one town in the surrounding areas located in the north-eastern part of Chiba Prefecture with max. 2.24m³/s of irrigation water developed in Naramata Dam and Kasumigaura area under Kasumigaura Development project and also with max. 1.32m³/s of domestic water developed in Naramata Dam, Kasumigaura Development, Kasumigaura Canal, Tonegawa Estuary Barrage and reservoirs of Kurobe River. Its construction was complete in 1988 and its management started in April 1989.


Tohnosho Town, Katori Gun, Chiba Pref.
Phone No.
Fax No.
*Chiba Canal Integrated Operation and Maintenance Office


Train and car
Approx.7 min. by car from Sasagawa sta. of JR Narita Line

Tourist Spots

Strawberry picking
Strawberry pickingToso Canal runs through Tohnosho Town. Making use of relatively warm weather in winter, farmers are growing strawberries in greenhouses in this town. As they are in season starting early January, many families drop in on one of those greenhouses and have fun time picking up and eat ripe strawberries there.
See more ->Tohnosho Town Tourist Association (Only Japanese)


Sasagawa Sumo Festival (held at the time of Autumn Festival of Suwa Shrine) [Last Sat. of July]
Sasagawa Sumo FestivalSasagawa Sumo Festival has a long history, dating back to Edo Period when a local story named "Tenpo Suikoden" about the long territorial battles between the two major Yakuza Groups was really taking place. On the day of the event, various sumo matches such as group matches, tournament matches, and major ranking class matches are held among child sumo players and some representative players from Japanese Self-Defence Forces, stationing near-by. On this day, a parade of some floats and portable shrines supported by local people are also made and the festival lasts until around 10:00 pm.
See more ->Tohnosho Town Tourist Association (Only Japanese)

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