The river gradually changes its course to the northwest in the east of Kyotanabe City, merges with the Uji-gawa River (the main river of the Yodo-gawa River system), flowing from northeast and with the Katsura-gawa River (Yodo-gawa River system) running from north at the western edge of Yawata City around the border between Kyoto and Osaka Prefectures, and changes its name to Yodo-gawa River.
京田辺市東部から徐々に北西へと流れを変え、八幡市西端、京都府・大阪府境付近で北東からの宇治川（淀川水系本流）、北からの桂川(淀川水系)と合流し、淀川となる。