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A Modification of SWMM for a Groundwater Pumping Simulation  

Lee, Sang-Ho (Department of Civil and Construction Engineering, Pukyong National University)
Lee, Jung-Min (Land & Urban Research Institute, Korea Land Corporation)
Publication Information
Journal of Korean Society on Water Environment / v.23, no.5, 2007 , pp. 628-635 More about this Journal
Abstract
As the hydrologic cycle is transformed by the expansion of impermeable area as a result of the urbanization, the function of an ecosystem is deteriorated by the transformed hydrologic cycle. In this study, a SWMM code was modified to have a groundwater pumping option about rivers-aquifer interaction to be possible. The modified SWMM was applied to continuous simulations of urban runoff from Hakuicheon watershed and it was used to analyse the effect of a groundwater pumping. The modified SWMM overcame the limitation of the ground subroutine that it only simulate groundwater inflow from ground to rivers. The result of continuous simulation of groundwater pumping is that surface runoff, groundwater runoff and groundwater level are well simulated, and Modified SWMM expressed groundwater runoff by negative number (-) when groundwater level is less than river stage.
Keywords
Groundwater pumping; Hakuicheon; Hydrologic cycle; SWMM;
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