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http://dx.doi.org/10.15681/KSWE.2018.34.3.308

Evaluation of Water Cycle Improvement in LH Institute Using SWMM-LID Model  

Jung, Jong-Suk (Land & Housing Institute, Korea Land & Housing Corporation)
Jung, Kwang-Wook (Korea Water Environment Research Institute)
Kang, Suman (Korea Water Environment Research Institute)
Hyun, Kyong-Hak (Land & Housing Institute, Korea Land & Housing Corporation)
Publication Information
Journal of Korean Society on Water Environment / v.34, no.3, 2018 , pp. 308-315 More about this Journal
Abstract
SWMM-LID was calibrated with flow monitoring data in LHI to evaluate runoff after LID application. The flow rate in the B basin was estimated to be 0.94 and 6.15 for O/S and $D_v$, respectively. In the A and C basins, the difference between the observed and simulated data was greater than in the B basin. As a result of runoff reduction efficiency by the application of LID facilities, the change of infiltration increased from 34.6 % to 45.8 % in the entire watershed, and the runoff decreased from 58.8 % to 46.3 %. In the runoff reduction of each LID facility, rain garden E showed the highest effect with 99.9 % and bioretention B showed the lowest effect with 27.5 %. In order to evaluate the efficiency of each LID facility, a comparison is made between the pore volume (V) of the LID and the catchment area (A). The runoff showed a runoff reduction effect of about 70 % above the 0.1 volume/area (V/A) value. As a result of examining the runoff reduction with LID facilities by the LID module of SWMM, a reasonable design is possible by reflecting the appropriate LID volume to drainage area.
Keywords
Hydrology; LID; Runoff reduction; SWMM; Urbanization;
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