Mobile QR Code QR CODE : Journal of the Korean Society of Civil Engineers
Title Optimal Groundwater Development Estimation to Prevent Saltwater Intrusion in Western Jeju Island
Authors 김민규(Kim, Min-Gyu) ; 장선우(Chang, Sun Woo)
DOI https://doi.org/10.12652/Ksce.2018.38.4.0527
Page pp.527-535
ISSN 10156348
Keywords 해수침투;제주도;가뭄;적정양수량 Saltwater intrusion;SEAWAT;Jeju Island;Optimal groundwater development
Abstract Agricultural activities of western Jeju island has suffered from saltwater intrusion seasonally. Objectives of this study are to prove the occurrence of saltwater intrusion in the coastal aquifer and to consider a management plan using MODFLOW-family code SEAWAT model. Model results show that the saltwater-freshwater interface intrudes inland only a few meters and that upconing phenomenon is rather the cause of the severe disaster of the agricultural water contamination. This study selected Gosan area as a representative site to estimate optimal groundwater development regulation against upconing by seasonal pumping for agriculture. The suggested optimal groundwater development estimation method considers the groundwater levels of representative monitoring wells for regulatory alarms.