[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 > Chubu Area > Toyogawa Canal

Dams, Canals Chubu Area

Toyogawa Canal

Tourist Spots
By BusBy TrainBy Car
1.Irrigation water
14.92m³/s (Onogake) 6.04m³/s (Muromatsubara gake) [Benefited land: approx. 18,129 ha]
2.Domestic water
2.96m³/s (Onogake), 1.223m³/s (Muromatsubara gake)[Water supply population: approx. 760,000]
3.Industrial water
1.527m³/s (Onogake) 0.903 m³/s (Muromatsubara gake) [Water supply area: 7 cities/towns/villages]
Benefited Area
Aichi Pref.
Shinshiro City, Toyohashi City, Toyokawa City, Gamagoori City, Tahara City
Shizuoka Pref.
Kosai City
Facilities Water source facilities (Ure Dam, Oshima Dam, 5 head works (Ooiri, Furikusa, Ono, Muro/Matsubara, Kansagawa Head Works) and 7 regulating ponds (Mitsukuchi Pond, Hattachi Pond, Komaba Pond, Ohara, Manba, Ashiga Pond, Gamagori Regulating Pond), Canal Length= approx. 34.6km)
Main canals (3 canals, Length= approx. 124.7km), Lateral canals (166 canals, Length= approx. 561.3km)
Parallel canals (Length= approx. 75.3 km)
Completion 1967
Details Toyogawa Canal project was implemented for the purpose of securing irrigation water, domestic water and industrial water for the East Mikawa Region of Aichi Prefecture and Kosai Region of Shizuoka Prefecture. To promote the purpose, the inter-basin water transfer scheme from Tenryu River system to Toyo River system was implemented. With the combined use of Ure Dam, Ono Head Works, main and lateral canals, and regulating ponds, etc., management operations of this canal project has been carried out smoothly since the operations start in April 1968. Toyogawa Comprehensive Canal, which in parallel with the original Toyogawa Canal, uses Oshima Dam as its water source facility, Kansagawa Canal facility and 4 regulating ponds in its territory have been managed for the supply of irrigation water and urban water for the said region since April 2002. After that, Toyogawa Canal Stage II project started to implement dual canals on the main canal for stable water conveyance, proper maintenance management, and efficient water utilization. From April 2016, management of selective areas started.


8 Imahashi-Cho, Toyohashi City, Aichi Pref.
Phone No.


Apprx.10 min. by walking from Higashi-Haccho-Dentei sta. of Toyohashi Railroad Azumada Line (Tram)


Tourist Spots

Toyokawa Inari (Temple)
Kiso Fukushima post-station TownThis temple is quite famous among all the business persons, because of the alleged effect of this Inari temple for buiness prosperity and growth.Especially during the new year holidays awful lots of worhippers come to this temple as one of the three most well-known Inari in Japan.
Photo by "Aichi Now" HP
See more ->Aichi Now (Aichi Prefectural Tourism Association)
Mt. Horai and Horaiji Temple
Kiso Fukushima post-station TownLocated in the west of Oshima Dam and other facilities, Mt. Hirai and Horaiji Temple are located. The temple has the long history since its foundation in the 700s and the main entrance trail to the temple consists of 1425steps of stones and there is the tallest Japanese cedar tree of 60m (800 years Old) standing on the trail. Aichi Prefecture's simbol bird of Japanese scops owl is said to be living in the forest of this mountain, so the entire mountain forest is now designated as natural scenic beauty and national monument as well. If you are wonderinga about it, you should come and confirm its healing effect.
Photo by "Aichi Now" HP
See more ->Aichi Now (Aichi Prefectural Tourism Association)
Water and Life Museum
Water and Life MuseumWater and Life Museum, run by Aichi Prefectural Government, stands on Safuri Lake in Chita City, Aichi Prefecture. Nearest convenient Station is Asakura of Meitetsu Tokoname Line. But as no bus service is available between the station and the museum, please take a taxi (about 10+ minutes). This facility was opened first on 1976, but it was renovated in 1994 and many elementary school students come to this museum for social study tour. Some agricultural implements used at the time before Toyogawa Canal was built along with the relief model of geographical features of Chita Peninsula. Also some large screen video presentations on the development of water works and industrial water projects in Aichi Prefecuture. In the plum bloom season in February to March, over 5000 plum blossoms are in full bloom. When you have a chance to come to the lake in this season, please just stop by this museum.
See more ->Water and Life Museum
*Please choose English.


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