Tide and wave events were simulated using the ADCIRC+SWAN coupled model for a linearly sloping channel with varying spatial distributions of bottom roughness. Enhanced bottom roughness, representing vegetation, was parameterized using the Manning’s n coefficient. The changes in maximum flow velocity, water surface elevation, and significant wave height as a result of increased bottom roughness were computed, based on a "smooth" control channel. Rough channels were designed as fully rough, smooth with rough patches, and fully intermediate (Manning’s n between “rough” and “smooth”). The reduction or enhancement of flow parameter was also compared among varying tidal amplitudes and wave conditions.