Urban flood control has become increasingly important due to the intensification of extreme rainfall events caused by climate change. Traditional drainage systems are often overwhelmed, prompting cities to explore modern solutions such as permeable pavements and smart drainage systems. Technologies like pervious concrete, porous asphalt, and permeable interlocking concrete pavers (PICP) allow water to infiltrate into the ground, reducing runoff volume and flood risk. Studies worldwide show that permeable pavements can cut runoff by 7–43% and peak discharge by up to 75%. Leading cities including Copenhagen, Rotterdam, and Los Angeles have embraced the “sponge city” model, which integrates permeable surfaces with green infrastructure like rain gardens and retention plazas. These urban designs absorb rainwater, reduce flood damage, and enhance water quality. Smart drainage systems using sensors and predictive algorithms, like those in Amsterdam and Taipei, dynamically manage water flow to further reduce risk. Innovative materials, such as hydrophobic concrete, clogging-resistant permeable pavements (CRP), and cool pavements, are also being adopted to withstand high traffic and resist clogging. However, these systems face challenges including pore clogging, structural limitations, and higher maintenance needs. Regular upkeep is essential to maintain their infiltration performance. Despite initial costs, permeable infrastructure often results in long-term savings by reducing the need for expensive sewer expansions. For instance, Philadelphia saved $9.6 billion through widespread use of green infrastructure. Overall, permeable pavements combined with smart drainage technologies offer sustainable, multi-functional flood mitigation strategies for the future.