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http://dx.doi.org/10.9719/EEG.2014.47.6.635

A Method to Estimate the Cell Based Sustainable Development Yield of Groundwater  

Chung, Il-Moon (Water Resources Research Div. Korea Institute of Civil Engineering and Building Technology)
Kim, Nam Won (Water Resources Research Div. Korea Institute of Civil Engineering and Building Technology)
Lee, Jeongwoo (Water Resources Research Div. Korea Institute of Civil Engineering and Building Technology)
Na, Hanna (Water Resources Research Div. Korea Institute of Civil Engineering and Building Technology)
Kim, Youn-Jung (Water Resources Research Div. Korea Institute of Civil Engineering and Building Technology)
Park, Seunghyuk (Water Resources Research Div. Korea Institute of Civil Engineering and Building Technology)
Publication Information
Economic and Environmental Geology / v.47, no.6, 2014 , pp. 635-643 More about this Journal
Abstract
Sustaiable development yield of groundwater in Korea has been determined according to 10 year drought frequency of groundwater recharge in the standard mid-sized watershed or relatively large area of district. Therefore, the evaluation of groundwater impact in a small watershed is hard to apply. Fot this purpose, a novel approach to estimate cell based sustainable development yield of groundwater (SDYG) is suggested and applied to Gyeongju region. Cell based groundwater recharge is computed using hydrological component analysis using the SWAT-MODFLOW which is an integrated surface water-groundwater model. To estimate the potential amount of groundwater development, the existing method which uses 10 year drought frequency rainfall multiplied by recharge coefficient is adopted. Cell based SDYGs are computed and summed for 143 sub-watersheds and administrative districts. When these SDYGs are combined with groundwater usage data, the groundwater usage rate (total usage / SDYG) shows wide local variations (7.1~108.8%) which are unseen when average rate (24%) is only evaluated. Also, it is expected that additional SDYGs in any small district could be estimated.
Keywords
sustaiable development yield of groundwater(SDYG); cell based recharge; SWAT-MODFLOW; Gyeongju region; groundwater usage rate;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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