In addition to the main river, the Kamogawa River has a tributary, called Kurama-gawa River, which originates in Hanse-toge Mountain Pass in Sakyo Ward, Kyoto City and is joined at Kibune-guchi by the Kibune-gawa River, originating in Seryo-toge Mountain Pass in Ukyo Ward, Kyoto City.
また、この鴨川本流とは別に、京都市右京区の芹生峠を源とする貴船川と、京都市左京区の花脊峠を源とする鞍馬川が貴船口で合流する鞍馬川がある。