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http://dx.doi.org/10.17663/JWR.2015.17.1.101

Evaluation of Rain Garden for Infiltration Capability and Runoff Reduction Efficiency  

Yoo, Chulsang (Department of Civil, Environmental and Architectural Engineering, Korea University)
Lee, Jinwook (Department of Civil, Environmental and Architectural Engineering, Korea University)
Cho, Eunsaem (Department of Civil, Environmental and Architectural Engineering, Korea University)
Zhu, Ju Hua (Department of Civil, Environmental and Architectural Engineering, Korea University)
Choi, Hanna (R&D Team, Research Institute of Technology, TAEYOUNG E&C)
Publication Information
Journal of Wetlands Research / v.17, no.1, 2015 , pp. 101-111 More about this Journal
Abstract
This study conducted a field experiment to estimate the characteristics of the rain garden installed at the site near Haman, also proposed a one-dimensional model to simulate the infiltration and runoff from the rain garden. This model was used to evaluate the rain garden using the rainfall data after the installation and during the last 10 years. Also, this model was applied to the annual maximum rainfall events to quantify the size of the impervious area that the rain garden can offset the adverse effect. The results are summarized below. (1) Hydraulic conductivity of the rain garden was estimated to be about 0.0188 m/hr by the variable-stage experiment. Also, the simulation experiment using the last 10 years rainfall data over the entire roof area showed that the infiltration amount is about 90.38% out of the total rainfall. (2) Infiltration simulation of the annual maximum rainfall events during last 10 years showed that the rain garden can offset the impervious area with its size about 30 times of the rain garden surface.
Keywords
Infiltration Capability; LID; Rain Garden; Runoff Reduction;
Citations & Related Records
Times Cited By KSCI : 11  (Citation Analysis)
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