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http://dx.doi.org/10.3741/JKWRA.2004.37.7.581

Evaluation of Sustainable Yield for a Small Rural Watershed  

Park, Ki-Jung (경북대학교 농업토목공학과)
Chung, Sang-Ok (경북대학교 농업토목공학과)
Publication Information
Journal of Korea Water Resources Association / v.37, no.7, 2004 , pp. 581-587 More about this Journal
Abstract
An experimental watershed was selected and sustainable yield was evaluated. The study area(3.89$\textrm{km}^2$) was located in Kyungpook Sangju Yangchon-dong. The visual MODFLOW was verified by comparing the observed and estimated groundwater table. The analysis of the observed and estimated groundwater table from 19 March 2003 to 18 March 2004 showed that the average error was 0.0009m, the error sum of squares 7.245$m^2$, absolute mean error 0.094 m, root mean square error 0.141m, and the model efficiency was 92%. The normal, 10- and 30- year drought frequency years were selected and sustainable yield was evaluated in these periods. Ratios of sustainable yield to the annual infiltration were 14.5% for the normal year(1992), 15.1% for the 10-year(1994), and 15.2% for the 30-year drought frequency year(1982). The results of this study can be used as a basic information for groundwater development and management planning considering regional characteristics.
Keywords
sustainable yield; MODFLOW model; drought frequency; infiltration;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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