<p>Unplanned urbanization has disrupted the hydrological balance in many Indian cities, increasing flood and water scarcity risks. Nagpur, despite its inland location, faces recurrent flooding due to inadequate stormwater infrastructure and encroachments on natural water bodies. This study explores the potential of Sustainable Urban Drainage Systems (SuDS) to mitigate urban flooding in Nagpur by simulating the performance of seven SuDS components—Rain Barrel, Rooftop Disconnection (RD), Green Roof, Pervious Pavement, Bio-retention, Rain Garden, and Infiltration Trench (IT)—individually and in combinations using the Storm Water Management Model (SWMM). A flood-prone sub-catchment in the city, comprising 69% impervious area, was selected for simulation. The study was conducted for five rainfall return periods (2, 5, 10, 25, and 100 years) to test performance under varying intensities. Among the components, RD and IT showed the highest effectiveness, reducing runoff by approximately 57% and 15%, respectively. Their combination (RD + IT) achieved a runoff reduction of nearly 67%. Other combinations, such as RD + Bio-retention and RD + Rain Garden, also performed well (~ 60% and ~ 58% reductions). These decentralized interventions promote groundwater recharge, support water reuse, and offer scalable, low-cost solutions for urban flood management. The findings highlight the applicability of SuDS in dense urban areas of India and underscore their relevance in retrofitting existing drainage networks. This study contributes to the limited empirical research on SuDS in tropical developing countries and offers a practical foundation for integrating such systems into local planning and national disaster resilience strategies.</p>