Stormwater drainage pipes and structures are essential components of urban infrastructure, designed to collect, convey, and discharge runoff from impervious surfaces like roads, rooftops, and parking lots. These systems typically include catch basins, manholes, culverts, and a network of pipes. Properly designed drainage infrastructure helps prevent localized flooding, protects roadways and buildings, and reduces erosion and sediment transport downstream. Many systems now incorporate features like sumps, baffles, or pretreatment devices to improve water quality before discharge. Their modularity and scalability make them suitable for both new developments and retrofits. Overall, stormwater drainage systems are a foundational element of resilient, well-managed urban environments.