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http://dx.doi.org/10.9720/kseg.2011.21.4.305

Spatio-Temporal Variations in Groundwater Recharge in the Jincheon Region  

Chung, Il-Moon (Water Resources Research Division, Korea Institute of Construction Technology)
Na, Han-Na (Water Resources Research Division, Korea Institute of Construction Technology)
Lee, Deok-Su (Water Resources Research Division, Korea Institute of Construction Technology)
Kim, Nam-Won (Water Resources Research Division, Korea Institute of Construction Technology)
Lee, Jeong-Woo (Water Resources Research Division, Korea Institute of Construction Technology)
Lee, Jae-Myung (Groundwater & Groundwater Investigation Team, Korea Water Resources Corporation)
Publication Information
The Journal of Engineering Geology / v.21, no.4, 2011 , pp. 305-312 More about this Journal
Abstract
Because groundwater recharge shows spatial-temporal variability due to climatic conditions, it is necessary to investigate land use and hydrogeological heterogeneity, and estimate the spatial variability in the daily recharge rate based on an integrated surface-groundwater model. The integrated SWAT-MODFLOW model was applied to compute physically based daily groundwater recharge in the Jincheon region. The temporal variations in estimated recharge were calibrated using the observed groundwater head at several National Groundwater Monitoring Stations and at automatic groundwater-monitoring sites constructed during the Basic Groundwater Investigation Project (2009-2010). For the whole Mihocheon watershed, including the Jincheon region, the average groundwater recharge rate is estimated to be 20.8% of the total rainfall amount, which is in good agreement with the analytically estimated recharge rate. The proposed methodology will be a useful tool in the management of groundwater in Korea.
Keywords
groundwater recharge; spatial-temporal variation; SWAT-MODFLOW;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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