This is the largest river in the west or the Talesh region. Its northern branch flows at an altituude of 2,000 m. and its mid-branch at an altitude of 3,000 m. These branches adjoin at an elevation of approximately 350 m. Its water shed has a gentle slope. This river passes through the city of 'Hashtpar' where a bridge is constructed over it. The river bed spreads within the limits of the city, and its southern fringes offer recreational opportunities.