The rapid growth of the population leads to urbanization that requires the construction of various structures such as roads for transport, hydraulic structures for storage, and diversion of water for drinking water and other basic needs. The construction of these hydraulic structures leads to the bed level change in the upstream of the structure. The Singanpore weir was constructed across the lower Tapi River in Surat city, India, in the year 1995. The current study focuses on the change in bed levels due to construction of the weir in the lower Tapi River between the Singanpore weir and Ghala gauging station using MIKE 21C. A hydrodynamic model was constructed for the specific stretch of the lower Tapi River, utilizing bathymetric data from surveys. This model incorporates the discharge at Ghala as the upstream boundary condition and the water level at Nehru bridge as the downstream boundary condition. The two-dimensional hydrodynamic model was calibrated by comparing the observed and simulated water levels at Singanpore weir. The calibrated two-dimensional hydrodynamic model was coupled with the morphological model where suspended sediment concentration at Ghala and Nehru bridge is considered as the U/S and D/S boundary condition, respectively. The study revealed that construction of the Singanpore weir leads to increase in bed level upstream of the weir for the period of nine months (January to September) in the year 2004.