Accurate flood modeling is critical for effective hazard and risk management, particularly in areas prone to pluvial flooding. This study employs an integrated spatial hydrological approach to model flood behavior in the Wadi Watir basin, situated in southeastern Sinai, Egypt, with a focus on assessing flood potential in vulnerable coastal urban areas. The rugged catchment area, spanning 3369.03 km2, was analyzed using a two-dimensional (2D) simulator designed for efficient runoff and flow dynamics assessment. The model's minimal data requirements and user-friendly design make it particularly suitable for regions like Wadi Watir, where discharge records are limited. Topographical data provided the necessary parameters for simulation, enabling detailed insights into water infiltration, bank overtopping, and sediment deposition on the alluvial fan. The simulation further demonstrated the effectiveness of reinforced road embankments in containing medium-scale floods. Key outputs, including flood peak discharge estimates and flood extent maps, are valuable tools for evacuation planning, land-use management, and future environmental and hydrological studies. This research contributes significantly to developing robust flood hazard mitigation strategies, promoting community safety, and supporting sustainable development in the Wadi Watir region.