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

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Dams, Canals Kanto Area

Tone Canal

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1.Irrigation water
Max. intake: 72,113m³/s (Benefited land: approx. 24,000 ha)
2.Domestic water
Max. intake: 40,258m³/s (water supply population: approx. 12 million)
3.Industrial water
Max. intake: 2,080m³/s (approx. 700 institutions)
4.Purification water
Max. 30m³/s
Benefited Area
Gunma Pref.
Tatebayahi City, Chiyoda Town, Itakura Town, Meiwa Town
Saitama Pref.
Gyoda City, Hanyu City, Kazo City, Kuki City, Hasuda City, Kasukabe City, Kosigaya City, Kawaguchi City, Ageo City, Souka City, Toda City, Satte City, Yoshikawa City, Yashio City, Misato City, Warabi City, Shiraoka City, Miyashiro Town ,Ina Town, Sugito Town , Matsubushi Town
Facilities Tone Barrage (Main Barrage: Total Length:490m, Water Intake, Sediment Reservoir, Outer Pumping Station)
Unification/connection Channel (Saitama Canal Length=approx. 16.7km, Oura Canal Length: approx. 16.6km)
Kasai Canal (Length: approx. 13.5km)
Completion 1967
Details This facility was constructed to meet the increasing water demand in the metropolitan area of Tokyo and to work as part of the comprehensive water resources development plan of Tone River system. As a result it was completed under the Tone Canal Construction Project to supply irrigation water to the farmland scattered in the midstream area of Tone River and to supply enough urban water to Tokyo and Saitama Prefecture where water was in short supply, and enough water for water purification of Ara River. At Tone Barrage, max. water intake is 134.064m³/s and the facility manages the water conveyance -to the following six canals, i.e. Saitama, Oura, Minuma Dai, Kasai, Musashi, and Gyoda canals.


4369 Funakawa, Suka, Gyoda City, Saitama Pref.
Phone No.


Train and car
Apprx.25 min. by taxi from Kitakounosu sta. or Fukiage sta. of JR Takasaki Line
Apprx.15 min. by taxi from Hanyu sta. of Tobu Railway Isesaki Line

Tourist Spots

Minuma Dai Canal Motoiri Park
Minuma Dai Canal Motoiri ParkMinuma Dai Canal Motoiri Park was constructed in 1977 in memory of Yasobei Izawa, the developer of Minuma Dai Canal in 1828. Within a short period of time this canal was completed, extending for 80km. In Edo period, rice was the staple food and the richness of the feudal lord's territory was measured by the amount of rice harvest. As it was an urgent need for the Tokugawa Shogunate Government to increase the rice harvest and for that purpose, water supply for irrigation of the rice field was a cruial factor. So 8th Shogun Yoshimume ordered Mr. Izawa to build the canal rather urgently. To answer to this order, he constructed this canal, which contributed to the huge expansion of rice fields in Kanto Plain.
Sakitama Ancient Burial Mounds
Sakitama Ancient Burial MoundsMany burial mounds of the heads of the region were built from 5th through 7th century in Japan. What is unique to this ground is that there are eight such ancient burial mounds scattered around rather small area in the flat land somewhat away from a large river. Ajacent to some of the mounds, there is Musium of The Sakitama Ancient Burial Mounds, where some of the discoveries from the mounds are on display. A famous dicovery is the sword with letters engraved. This engraving dipicts the year of 471A.D., supposedly the oldest sword excavated from the ruin.


Salmon Run-ups and Roe Extracting Observation Day at Tone Barrage on November
See more-> Salmon Run-ups and Roe Extracting Observation Day at Tone BarrageTopics:19 October, 2017