Dear Colleagues,

Nature-based solutions (NBS) used in sustainable urban drainage systems (SUDS) exploit natural techniques to control runoff formation. They are based on the restoration of fundamental hydrological processes (interception, evapotranspiration, and infiltration) that are compromised or strongly limited in the urban areas, with resulting critical conditions in urban drainage networks, pluvial floodings, and the pollution of the receiving water bodies. NBSs are also useful to increase rainwater harvesting and to control thermal energy fluxes in indoor and outdoor urban areas.

Research is still needed to define and quantify suitable performance indicators to assess the effect of the NBS on the resilience of modern cities, especially in areas where the rainfall climatology is most challenging, being characterized by short-duration high-intensity events separated by long dry periods.

We welcome research contributions employing experimental and numerical/analytical methods, the former based for instance on the verification of the hydraulic and hydrological performance of different NBSs on dedicated laboratory testbeds and/or field installations, the latter based on rainfall–runoff models and on numerical simulations of the hydraulic behavior of urban drainage solutions.

Prof. Dr. Luca Giovanni Lanza
Dr. Arianna Cauteruccio
Guest Editors

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• urban hydrology
• nature-based solutions
• sustainable urban drainage
• resilient cities
• stormwater management
• low impact development
• green roofs
• rainwater harvesting