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http://dx.doi.org/10.9720/kseg.2014.2.217

Analysis of Groundwater Variations using the Relationship Between Groundwater use and Daily Minimum Temperature in a Water Curtain Cultivation Site  

Chang, Sunwoo (Water Resources Research Division, Korea Institute of Civil Engineering and Building Technology)
Chung, Il-Moon (Water Resources Research Division, Korea Institute of Civil Engineering and Building Technology)
Publication Information
The Journal of Engineering Geology / v.24, no.2, 2014 , pp. 217-225 More about this Journal
Abstract
Water curtain cultivation (WCC) systems in Korea have depleted water resources in shallow aquifers through massive pumping of groundwater. The goal of this study is to simulate the groundwater variations observed from massive groundwater pumping at a site in Cheongweon. MODFLOW was used to simulate three-dimensional regional groundwater flow, and the SWAT (Soil and Water Assessment Tool) watershed hydrologic model was employed to introduce temporal changes in groundwater recharge into the MODFLOW model input. Additionally, the estimation method for groundwater discharge in WCC areas (Moon et al., 2012) was incorporated into a groundwater pumping schedule as a MODFLOW input. We compared simulated data and field measurements to determine the degree to which winter season groundwater drawdown is effectively modeled. A simulation time of 107 days was selected to match the observed groundwater drawdown from November, 2012 to March, 2013. We obtained good agreement between the simulated drawdown and observed groundwater levels. Thus, the estimation method using daily minimum temperatures, may be applicable to other cultivation areas and can serve as a guideline in simulating the regional flow of riverside groundwater aquifers.
Keywords
water curtain cultivation (WCC); MODFLOW; SWAT; daily minimum temperature;
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Times Cited By KSCI : 4  (Citation Analysis)
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