Modelling the role of permeable pavements in mitigating pluvial flooding in Genoa, Italy

The risk of pluvial flooding is simulated using a hydrodynamic model, focusing on the efficiency of surface drainage and assuming no backflow from the underground pipe network. Following a detailed survey, the storm drain inlets and their maintenance conditions (clogging) are included in the model in the form of pump station elements with predetermined operating rules. The implementation of resin gravel permeable pavements (PPs) is modelled to assess their potential mitigation benefits. Internal boundaries (blocks) allow the hydrological performance of PPs to be introduced into the model as predetermined input hydrographs derived from published laboratory experiments.