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http://dx.doi.org/10.3741/JKWRA.2022.55.8.613

A study on the rainfall-runoff reduction efficiency on each design rainfall for the green infrastructure-baesd stormwater management  

Kim, Byungsung (Water Resources Management Research Center, K-water)
Kim, Jaemoon (Department of Civil and Environmental Engineering, Pusan National University)
Lee, Sangjin (Water Resources Management Research Center, K-water)
Publication Information
Journal of Korea Water Resources Association / v.55, no.8, 2022 , pp. 613-621 More about this Journal
Abstract
Due to the global climate change, the rainfall volume and frequency on the Korean Peninsula are predicted to increase at the end of the 21st century. In addition, impervious surface areas have increased due to rapid urbanization which has caused the urban water cycle to deteriorate. Green Infrastructure (GI) researches have been conducted to improve the water cycle soundness; the efficiency of this technique has been verified through various studies. However, there are still no suitable GI design guidelines for this aspect. Therefore, the rainfall scenarios are set up for each percentile (60, 70, 80, 90) based on the volume and frequency analysis using 10-year rainfall data (Busan Meteorological Station). After determining the GI areas for each scenario, the runoff reduction characteristics are analyzed based on Storm Water Management Model (SWMM) 10-year rainfall-runoff-simulations. The total runoff reduction efficiency for each GI areas are computed to have a range of 13.1~52.1%. As a results of the quantitative analysis, the design rainfall for GI is classified into the 80~85 percentile in the study site.
Keywords
Green Infrastructure (GI); Runoff reduction; SWMM; Water cycle;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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