Azizah Rokhmawati, Wati Asriningsih Pranoto and Heru Tri Saksena 2026. Effectiveness Analysis of Polder Drainage Systems in Reducing Urban Flood Risk: 1D/2D Hydrodynamic Simulation Based on LiDAR Topographic Data. Structures, Infrastructure, Planning, Implementation, and Legislation . 2, 1 (May 2026), 48–57. DOI:https://doi.org/10.69855/sipil.v2i1.520.