Noto’s short rivers and lack of flat land make farming difficult. That is why people have carefully managed and passed down water channels built by their ancestors. Quite a few water channels, including Yomosuke-yosui (Nanao City), are still used as irrigation canals. Some of them are underground water channels called “Manpo”. Fukami-mura Manpo (Nanao City) is as long as 300 m. The canals tell us that there were groups of workers or their leaders with advanced civil engineering technology in Noto during the Edo period. In addition, because securing a water supply is essential for rice farming, there could have been conflicts between neighboring villages. Records show that there was fierce competition for water around Kasuga-yosui, which takes water from the Tsukada River in Wajima City. On the other hand, through canal management, local communities have formed strong bonds among their members, who feel like they share a common destiny.