A region on the west side of the river in Chiyokawa-cho is called Ogawa, and this is believed to be where 'Ogawa-go village, Kuwata-gun County' mentioned in the "Wamyo-sho" (a dictionary compiled in the Heian period) was located.
大堰川を挟んだ西方、千代川町に小川という字名があり、『和名抄』に見える「桑田郡小川郷」の遺称地であるとされている。