In order to simulate urban storm water flow and analyze its influence on zonal waterlogging, a hydrological and hydrodynamic model for river networks and a hydraulic model for urban drainage networks were dynamically coupled using the OpenMI technology. Using the Dianbei zone, one of 14 water conservation zones in Shanghai, as an example, a coupled urban storm water model was established. Then, the effect of the combination of different types of rainstorms and tides on zonal waterlogging in the Dianbei zone was analyzed using the model. The results indicate that the model can precisely simulate urban zonal waterlogging in tidal river networks and provide reference for urban flood control.