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The Management of Nonpoint Source and Storm Water Reduction with LID Techniques in Inchon City, South Korea

  • Lim, Dohun (Korea Natural Environment Institute) ;
  • Lee, Yoonjin (Department of General Education, Konyang University)
  • Received : 2015.04.08
  • Accepted : 2015.09.21
  • Published : 2015.10.31

Abstract

Impervious areas have been expanded by urbanization and the natural structure of water circulation has been destroyed. The limits of centralized management for controlling storm water runoff in urban areas have been suggested. Low impact development (LID) technologies have been promoted as a crucial alternative, establishing a connection with city development plans to build green infrastructures in environmentally friendly cities. Thus, the improvement of water circulation and the control of nonpoint source were simulated through XP-SWMM (storm water and wastewater management model for experts) in this study. The application of multiple LID combination practices with permeable pavements, bioretention cells, and gutter filters were observed as reducing the highest runoff volume by up to 70%. The results from four different LID installation scenarios indicated that permeable paving is the most effective method for reducing storm water runoff. The rate of storm water runoff volume reduced as the rainfall duration extended. Based on the simulation results, each LID facility was designed and constructed in the target area. The LID practices in an urban area enable future studies of the analysis of the criteria, suitable capacity, and cost-efficiency, and proper management methods of various LID techniques.

Keywords

Low impact development;Storm water runoff;Water resources management;Nonpoint source;Urban design

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