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http://dx.doi.org/10.9720/kseg.2011.21.2.107

Correlation Analysis between Groundwater Level and Baseflow in the Geum River Watershed, Calculated using the WHAT SYSTEM  

Yang, Jeong-Seok (School of Civil and Environmental Engineering, Kookmin University)
Chi, Dong-Keun (School of Civil and Environmental Engineering, Kookmin University)
Publication Information
The Journal of Engineering Geology / v.21, no.2, 2011 , pp. 107-116 More about this Journal
Abstract
Groundwater level data and flowrate data were collected by considering the distance between the groundwater-level gauge station and flowrate gauge station (< 10 km) in the Geum River watershed, Baseflow was separated from the collected flowrate data using the WHAT SYSTEM, which is a Web- and GIS-based tool developed for hydrological applications, Correlation analysis was performed for the separated baseflow and groundwater-level data collected from a site close to the flowrate gauge station, Twenty regions were selected and data sets were collected from 2002 to 2008. Twelve regions yielded a correlation coefficient of > 0.5, When the data sets were analyzed for each year for all 20 regions, we obtained a correlation coefficient of 0.5-0.6 for 8 cases, 0.6-0.7 for 5 cases, and > 0.7 for 12 cases. For individual regions, the correlation coefficient varied from year to year. There was a tendency toward weak correlation in the case of drought or flood, Therefore, under normal conditions (i.e., neither flood nor severe drought), it is possible to estimate the baseflow from nearby groundwater-level data for regions with a high correlation coefficient.
Keywords
WHAT SYSTEM; Baseflow; Groundwater level; Correlation Coefficient;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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