To investigate groundwater variation characteristics in the Hancheon watershed, Jeju Island, an integrated hydrologic component analysis was carried out. For this purpose, SWAT-MODFLOW which is an integrated surface-groundwater model was applied to the watershed for continuous watershed hydrologic analysis as well as groundwater modeling. First, ephemeral stream characteristics of Hancheon watershed can be clearly simulated which is unlikely to be shown by a general watershed hydrologic model. Second, the temporally varied groundwater recharge can be properly obtained from SWAT and then spatially distributed groundwater recharge can be made by MODFLOW. Finally, the groundwater level variation was simulated with distributed groundwater pumping data. Since accurate recharge as well as abstraction can be reflected into the groundwater modeling, more realistic hydrologic component analysis and groundwater modeling could be possible.

Abstract
 1. 서 론
 2. 연구재료 및 방법
  2.1. SWAT-MODFLOW 모형의 개요
  2.2. 모형의 적용
 3. 결과 및 고찰
  3.1. 지표수 유출분석
  3.2. 지하수 함양 분석
  3.3. 지하수 유동 분석
 4. 결 론
 참 고 문 헌

• 김남원(한국건설기술연구원 수자원연구실) | Nam-Won Kim (Water Resources Research Dept., Korea Institute of Construction Technology, Goyang)
• 나한나(한국건설기술연구원 수자원연구실) | Hanna Na (Water Resources Research Dept., Korea Institute of Construction Technology, Goyang)
• 정일문(한국건설기술연구원 수자원연구실) | Il-Moon Chung (Water Resources Research Dept., Korea Institute of Construction Technology, Goyang) Corresponding author