Modelling Runoff from Permeable Pavements: A Link to the Curve Number Method

Permeable Pavement (PP) models are valuable tools for studying the implementation of PPs in urban environments. However, runoff simulated by traditional such as Curve Number (CN) is different from that created with PP models, infiltration computed differently. many investigations compare both to extract broader conclusions without considering how two related. Hence, this research explores relation between one general model, selecting widespread CN model a baseline, and provided Storm Water Management Model (SWMM). Correlation was set using hydrograph single event baseline obtaining best pavement permeability value calibration. The influence storm depth, slope, catchment shape, type also analysed. Calibration conducted based on Nash–Sutcliffe coefficient, but peak volume performances were studied. results show it possible link hydrographs those method, although not useful entire range. That practical CNs higher than 88 shall be helpful planners researchers several pervious/impervious scenarios drainage more robustly. One direct application changing method simulates runoff. It enough change unique parameter can linked certain imperviousness CN.