Developing a Reliability Index of Low Impact Development for Urban Areas

摘要: A defining characteristic of the urbanization is transformation existing pervious areas into impervious during development. This leads to numerous hydrologic and environmental problems such as an increase in surface runoff due excess rainfall, flooding, deterioration water quality, nonpoint source pollution. Several studies propose supplementary measures on change development using low impact technique. study investigated reduction pollutant loads flooding catchments through urban catchment rainfall–runoff management. For quantitative assessment flood disasters pollution problems, we a reliability evaluation technique refers series analysis methods that determine disaster prevention performance systems. As two factors involve physical quantities different dimensions, was developed distance measure method. Using storm management model, multiple scenarios based synthetic rainfall Daerim 2 rainwater pumping station Seoul, South Korea, were examined. Our results indicate need for efficient natural risks may occur catchments. Moreover, this can be used primary reference setting significant target facilitating accurate decision making concerning drainage system