Toyogawa Canal has been transmitting water for over 50 years since 1968 and supports the development of East Mikawa Region of Aichi Prefecture and Kosai City of Shizuoka Prefecture.

As East Mikawa Region and Kosai City did not have a large river nearby, their residents had hard time farming and leading daily lives due to water shortage.

Since the start of water transmission through Toyogawa Canal, agriculture in East Mikawa Region made a tremendous development with greenhouse horticulture as a core business and this region has become a leading agricultural production area in Japan.

Since abundant water for industrial use from Toyogawa Canal became available, many factories moved into East Mikawa Region and Kosai City and industrial parks were developed.

The rainwater fallen on the mountains in Okumikawa (Deep Mikawa) Region is stored in Ure and Oshima dam reservoirs. The released water from these dams flows down and is taken at head works located below the dams, and delivered to East Mikawa Region of Aichi Prefecture and Kosai City of Shizuoka Prefecture through Toyogawa Canal. To use limited water resources effectively, the storage water at the said dams is delivered to the tip of Atsumi Peninsula about 100km downstream in a day through many water management facilities like, head works, regulating reservoirs, main canals, lateral canals, pumping stations, and so on. During the past five decades since the start of water transmission in 1968, Toyogawa Canal has become the essential facility to provide its benefitted area with needed water to support the lives of local people.