Study the effect of cellular dams on upstream conditions of rivers by using the HEC-RAS model (case study: Mared cellular dam on the karoon river)

Tides are affected by complex tidal hydraulic conditions. This study is the effect of constructing an upstream cell dam of Bahmanshir on Karun river from Ahvaz hydrometric station as an upstream border to Hafar three-way as a downstream model boundary. HEC-RAS model has been used to model river conditions in this research. The software output results showed that after the construction of the dam, the trend of changes in the upstream station changed drastically, so that the water level values ​​in Ahvaz, Darkhovin, upstream of the cell dam were measured 4.5, 8, 12 meters, respectively. شد. The average flow velocities in Ahvaz, Darkhovin, upstream and downstream sections of the cell dam are 1.24, 0.87, 1.53, 1.24 m / s, respectively, and the flow velocity after construction and location of thشThis study is the effect of constructing an upstream cell-dam of Bahmanshir on Karoon river from Ahvaz hydrometric station as an upstream border to Hafar three-way as a downstream model boundary. HEC-RAS model has been used to model river conditions in this research. The software output results showed that after the construction of the dam, the trend of changes in the upstream station changed drastically, so that the water level values in Ahvaz, Darkhovin, upstream of the cell dam were measured at 4.5, 8, 12 meters, respectively. The average flow velocities in Ahvaz, Darkhovin, upstream and downstream sections of the cell dam are 1.24, 0.87, 1.53, 1.24 m / s, respectively,