As global warming has accelerated to weather in recent years, and The frequent floods are creating heavy rains and typhoons followed by considerable damage in Jeju. This study estimated design flood discharges and flood stage in Jeju, considering climate change in connection with RCP scenario, the 5th IPCC Report recently published. It also analyzed the period which might be subject to the risk of flooding in downstream of Oedo Stream. As a result, it has analyzed that there might be a risk of flooding when there were 80 years or more rainfall events in 35 years that rainfall would have increased by 10%, 69 years that 100 years or more heavy rain and rainfall would have increased by 20%, and 104 years that 100 years or more heavy rain and rainfall would have increased by 20%. It is expected that this study results of rainfall increasing trend caused by climate change will be helpful to minimize the damage of floods which will secure the future of Jeju.

Abstract
 1. 서 론
 2. 연구방법
  2.1. 연구대상 하천 및 유역
  2.2. 강우자료의 수집 및 연구방법
 3. 결과 및 고찰
  3.1. 외도천 유역의 확률강우량 산정
  3.2. Case 별 설계홍수량 산정
  3.3. Case 별 설계홍수위 산정
  3.4. 기후변화 시나리오를 활용한 범람 위험 분석
 4. 결론
 REFERENCE

• 강보성(제주대학교 토목공학과) | Bo-Seong Kang (Department of Civil Engineering, Jeju National University)
• 양성기(제주대학교 토목공학과) | Sung-Kee Yang (Department of Civil Engineering, Jeju National University) Corresponding author
• 정우열(제주대학교 토목공학과) | Woo-Yeol Jung (Department of Civil Engineering, Jeju National University)