01 / Uwayu channel
The Uwayu channel, opened in 1655,is managed by the tado water association.
Uwayu is an irrigation channel that Kasamatsu Sadayu opened in 1655 (Meireki 1) by building a weir; the Agency for Cultural Affairs writes that it made rice farming on Aragijima possible. It is 3.2 km long. Channels are called yu and the water associations tado; they choose a head (butou) and keep a water keeper to manage it.
- Opened in Meireki 1 (1655)
- 3.2 km long, about 13.5 ha irrigated
- Uwayu tado: about 50 households (2016 report)

