The Tsuge-gawa and Hattori-gawa Rivers flow into the Kizu-gawa River in Iga City, Mie Prefecture, where it gathers into the Nabari-gawa River in Minami Yamashiro-mura, Soraku-gun, Kyoto Prefecture.
三重県伊賀市で柘植川と服部川を、京都府相楽郡南山城村で名張川を集める。