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Analysis of Runoff Reduction with LID Adoption using the SWMM  

Park, Junho (Division of Agricutural Engineering, Kangwon National University)
Yoo, Yonggu (Division of Agricutural Engineering, Kangwon National University)
Park, Youngkon (Korea Railroad Research Institute)
Yoon, Heetaek (Korea Railroad Research Institute)
KIm, Jonggun (Division of Agricutural Engineering, Kangwon National University)
Park, Younshik (Division of Agricutural Engineering, Kangwon National University)
Jeon, Ji-Hong (Division of Environment Engineering, Andong National University)
Lim, Kyoung Jae (Division of Agricutural Engineering, Kangwon National University)
Publication Information
Journal of Korean Society on Water Environment / v.24, no.6, 2008 , pp. 806-816 More about this Journal
Abstract
In recent years, increases in impervious areas with rapid urbanization and land use changes are causing numerous hydrologic and environmental problems. In this study Low Impact Development (LID) was applied to investigate changes in runoff and peak runoff with LID plans. SWMM 5.0 was used to simulate LID Integrated Management Practices (IMPs) at study area. The SWMM estimated total runoff volume with conventional land use planning is (82.3%, 46.44 mm), (99%, 73.16 mm) greater than total runoff before urbanization, while total runoff with LID is (11.1%, 46.44 mm), (49%, 73.16 mm) greater than those before urbanization. With the LID adoption in land use planning, pervious area increases by 49.8% compared with that from the conventional urban land use planning, resulting in (32.7%, 46.44 mm), (23.6%, 73.16 mm) decrease in total runoff, and (32.6%, 46.44 mm), (18.5%, 73.16 mm) decreases in peak rate runoff. The results obtained from this study indicate that peak rate runoff, time to peak, and total runoff can be reduced with the LID in urban land use planning because the LID secures pervious areas with various LID IMPs. The SWMM simulated result using design storm data and the US EPA suggested CN values for various LID IMPs implies that how environment-friendly urban land use planning with the LID adoption is important for sustainable development at urbanizing watershed.
Keywords
Curve number; Low impact development (LID); Low impact development design (LIDD); Storm water management model (SWMM);
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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