Abstract
Recently, in urban areas, watershed management paradigms have changed the water cycle and water quality. This study explored the implementation of multiple low impact development (LID) facilities to improve the water cycle and water quality according to the paradigms. The study area was the Daeyeon campus of Pukyong National University, Busan. In this area, permeable pavement is installed in various LID facilities. In this study, a total of 35 optimal implementation plans of permeable pavement are presented. The suggested optimal designs confirm that the installation of a permeable pavement considering one purpose alone (for example, water quality improvement) does not satisfy the other purposes (for example, runoff reduction); in other words, such an installation is uneconomical. Therefore, this study proposes optimal installation designs for permeable pavements that can achieve multiple purposes (in this case, water quality improvement and runoff reduction) with a limited budget using the methodology suggested herein. Keywords: LID, Multi-objective Optimization, Stormwater Runoff, Water Quality
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