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http://dx.doi.org/10.5762/KAIS.2021.22.4.545

A Study on Improvement of Hydrologic Cycle by Selection of LID Technology Application Area -in Oncheon Stream Basin-  

Kim, Jae-Moon (Dept. of Social Environmental Systems Engineering, Pusan National University)
Baek, Jong-Seok (Korea Institute of Hydrological Survey)
Shin, Hyun-Suk (Dept. of Social Environmental Systems Engineering, Pusan National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.22, no.4, 2021 , pp. 545-553 More about this Journal
Abstract
The frequency by water disaster in urban areas are increasing continuously due to climate change and urbanization. Countermeasures are being conducted to reduce the damage caused by water disasters. An analysis based on permeability, one of the parameters that affect runoff, is needed to predict quantitative runoff in urban watersheds and study runoff reduction. In this study, the SWAT model was simulated for the oncheon stream basin, a representative urban stream in Busan. The permeability map was prepared by calculating the CN values for each hydrologic response unit. Based on the permeability map prepared, EPA SWMM analyzed the effect of LID technology application on the water cycle in the basin for short-term rainfall events. The LID element technology applied to the oncheon stream basin was rooftop greening in the residential complex, and waterproof packaging was installed on the road. The land cover status of the land selected based on the permeability map and the application of LID technology reduced the outflow rate, peak flow rate, and outflow rate and increased the infiltration. Hence, LID technology has a positive effect on the water cycle in an urban basin.
Keywords
Low Impact Development; SWAT; SWMM; CN; Hydrologic Cycle;
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Times Cited By KSCI : 3  (Citation Analysis)
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