Abstract
Infrastructure development, particularly in airport expansion initiatives, can profoundly affect local catchment regions. Alterations in land use to facilitate airport expansion frequently interfere with natural water flow and elevate flood risk in surrounding regions. This study evaluates the role of infiltration wells and drainage systems in airport buffer zones as a nature-based solution (NbS) to manage flood risks and enhance sustainable and resilient infrastructure design. Hydrological and hydraulic evaluations were performed utilizing SWMM 5.1 to assess open channel design and the implementation of infiltration wells. The runoff discharge for a 5-year rainfall return period is 34.15 m3/s. A trapezoidal channel featuring a semicircular base, measuring 3 m in width and 2.4 m in height, was determined to be successful. The implementation of infiltration wells alongside conventional drainage decreases runoff by 27%. This study underscores the potential of rainwater harvesting and infiltration wells for flood mitigation, highlighting its role in sustainable airport infrastructure.