 The reservoir has drawn water from the river on more than a dozen occasions since it opened, and the Kanda River has not flooded during that time.Plans call for the tunnel to be extended to Tokyo Bay, literally creating a second, underground Kanda River.In the middle section of the length of the river, there is a 2.1 km section from the area near Toden Arakawa Line Waseda Station to near Iidabashi Station which was formerly called .