This river is one of the main branches of the Sefid Rood River and originates from the Cheshmeh Mountains, elevations of the Hezar Kanian, springs of the eastern mountainous region of the Zagross located to the south, and west of the township of Divandareh. On entering the province of Zanjan, it joins the Shahrood River in Loshan, forming the Sefid Rood River and flows to the Caspian Sea. Qamchoqay and Ozan Dareh Rivers in Bijar and the Terval and Shour Rivers in the township of Qorveh are two important branches of Qezel Ozan in Kurdestan province. The river valleys and fringes of this river are attractive inhabited with reputed species of fish.