Towards improving the hydrologic design of permeable pavements

Abstract The common approach to the hydrologic design of permeable pavements (PPs) uses synthetic rainfall events. This study assessed validity using events for undrained PP. Synthetic (25-year return period) were used five Norwegian cities. effectiveness these was tested long-term simulation (12–30 years) with high temporal resolution (1 min). Storm Water Management Model (SWMM) generate time series surface runoff PPs and flow duration curves applied analyse hydrological performances. Designing PP found underestimate storage layer depth leading frequent occurrence runoff, which is considered a failure pavements. Long-term provide valuable information can be as basis design. In future, it recommended use precipitation data generated from climate change models incorporate effect in