<![CDATA[Serang City, as the center of economic growth and government of Banten Province, faces the challenge of chronic waterlogging in the Cilegon-Serang Highway corridor due to the imbalance between infrastructure development and drainage capacity. This study aims to evaluate the performance of the drainage system through hydrological-hydraulic analysis based on historical rainfall data and channel capacity simulation. The results show that the majority of drainage channels do not meet the planned discharge capacity of 68%, with the dominant factors being sedimentation and channel slope design errors. Multivariate regression analysis reveals significant contributions from both factors to the frequency of waterlogging. The proposed technical solutions include channel dimension normalization, installation of sediment trap systems, and integration of green infrastructure (bioswales) to increase infiltration capacity, supported by participatory community monitoring mechanisms. These findings provide strategic recommendations to improve the resilience of urban drainage systems in the face of urbanization pressures and extreme climate phenomena, while emphasizing the importance of a multidisciplinary approach in sustainable infrastructure planning.]]>
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