This study presents a systematic framework to derive the best values of design and planning parameters for low impact development
(LID) practices. LID was developed to rehabilitate the distorted hydrological cycle due to the rapid urbanization. This study uses Water
Management Analysis Module (WMAM) to perform sensitivity analysis and multiple scenario analysis for LID design and planning
parameters of Storm Water Management Model (SWMM). This procedure was applied to an urban watershed which have experienced
rapid urbanization in recent years. As a result, the design and planning scenario derived by WMAM shows lower total flows and peak
flow, and larger infiltration than arbitrary scenarios for LID design and planning parameters. In the future, economic analysis can be
added for this application in the field.