01 / Weir
A weir slanting across the Monobe Riverwatered the plain downstream.

Nonaka Kenzan, a senior retainer of the Tosa domain, built this intake weir of stone and pine. It is 327 m long, 11 m wide and about 1.5 m high. It watered the plain downstream and was also used for transport on the Funairi River. Now that a new weir has been built upstream, the site is Yamada Weir Memorial Park (山田堰記念公園), where a reconstructed stone intake can be seen.
- Weir 327 m long, 11 m wide, about 1.5 m high
- Prefectural historic site
- Also used for transport on the Funairi River
