Author(s): Luca Palmiero; Erica Orsi; Gaetano Crispino; Corrado Gisonni
Linked Author(s): Corrado Gisonni, Gaetano Crispino
Keywords: No Keywords
Abstract: The growing urbanisation significantly influences the urban hydrological cycle by increasing the impervious surfaces, reducing the surface roughness, and increasing the stormwater runoff. Under these conditions sewer networks may be forced beyond their capacity, causing pressurization phenomena with potential flooding of the urban areas. A possible mitigating solution to this challenge is the implementation of Nature-based Solutions (NbSs). This study investigates the effects achievable from two different NbSs, namely Green Roofs (GRs) and Permeable Pavements (PPs), to improve the hydraulic operation of the drainage network serving the urban catchment of Ganzirri, in Messina (Italy). Preliminary tests based on the EPA SWMM 5.2 employment reveal that GRs and PPs retain the stormwater volumes giving an effective reduction of the maximum flow discharge along the sewer system. The influence of the pluvial return period and the NBSs coverage area on the performance indicators of such measures is also analyzed.
Year: 2026