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The Estimation of Groundwater Recharge with Spatial-Temporal Variability at the Musimcheon Catchment  

Kim Nam-Won (Water Resources Research Department, Korea Institute of Construction Technology)
Chung Il-Moon (Water Resources Research Department, Korea Institute of Construction Technology)
Won Yoo-Seung (River Information Center of Han River Flood Control Office, MOCT)
Lee Jeong-Woo (Water Resources Research Department, Korea Institute of Construction Technology)
Lee Byung-Ju (Water Resources Research Department, Korea Institute of Construction Technology)
Publication Information
Journal of Soil and Groundwater Environment / v.11, no.5, 2006 , pp. 9-19 More about this Journal
Abstract
The accurate estimation of groundwater recharge is important for the proper management of groundwater systems. The widely used techniques of groundwater recharge estimation include water table fluctuation method, baseflow separation method, and annual water balance method. However, these methods can not represent the temporal-spatial variability of recharge resulting from climatic condition, land use, soil storage and hydrogeological heterogeneity because the methods are all based on the lumped concept and local scale problems. Therefore, the objective of this paper is to present an effective method for estimating groundwater recharge with spatial-temporal variability using the SWAT model which can represent the heterogeneity of the watershed. The SWAT model can simulate daily surface runoff, evapotranspiration, soil storage, recharge, and groundwater flow within the watershed. The model was applied to the Musimcheon watershed located in the upstream of Mihocheon watershed. Hydrological components were determined during the period from 2001 to 2004, and the validity of the results was tested by comparing the estimated runoff with the observed runoff at the outlet of the catchment. The results of temporal and spatial variations of groundwater recharge were presented here. This study suggests that variations in recharge can be significantly affected by subbasin slope as well as land use.
Keywords
Groundwater recharge; SWAT model; Spatial-temporal variability;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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