Chiyoda-entei
This weir is located slightly east from Hokkaido Prefectural Tokachi Ecology Park. Located at the midstream of Tokachi River, it was built as a water intake facility for the surrounding farms in 1935. It was also used for the cultivation of salmon and trout. It was designated as a civil engineering heritage site by the Japan Society of Civil Engineers because of its extraordinary historical value. It is currently used as a trapping area for harvesting salmon roe, and from September to October every year, it is a famous spot for watching large numbers of autumn salmon make their upstream journey.