On account of the increase in water demand and climate change, droughts are in great concern for water resources planning and management. In this study, rainfall characteristics with stationary and non-stationary perspectives were analyzed using Weibull distribution model with 40-year records of annual minimum rainfall depth collected in major cities of Korea. As a result, the non-stationary minimum probable rainfall was expected to decrease, compared with the stationary probable rainfall. The reliability of ξ1, a variable reflecting the decrease of the minimum rainfall depth due to climate change, in Wonju, Daegu, and Busan was over 90%, indicating the probability that the minimal rainfall depths in those city decrease is high.

• 뱜바도지엘베자르갈(울란바타르 하수도과) | Elbegjargal Byambadorj (Dept. of Sewerage in Ulanbataar City)
• 유순유(중앙대학교 사회기반시스템공학부) | Soonyu Yu (Dept. of Civil Engineering at Chung-Ang University)
• 박규홍(중앙대학교 사회기반시스템공학부) | Kyoohong Park (Dept. of Civil Engineering at Chung-Ang University) Corresponding author