Abstract
An increase in the ratio of impermeable area due to urban watersheds and industrial development has led to an increase in nonpoint source pollution and floodplains. In order to solve these problems, development and application of low impact development (LID), which is a rainwater management facility, is actively underway. In this study (I), parameters and ranges applied to the Storm Water Management Model-Low Impact Development (SWMM-LID) model are examined. To this end, 100 scenarios were created through the simulation method within the parameter range, and the sensitivity of peak and total runoff to the influence of the parameters of each element technology dealing with runoff was analyzed. As a result, bio retention cell, green roof, rain garden, rain barrell, in the given order, showed a sensitive response. However, since the LID element technology itself is intended to store low-frequency small-scale rainfall, it is important to understand the degree of rainfall, from low to high frequency. Further, the results of this study can be used as basic data for the design and development of LID element technology and performance verification of LID facilities.
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