In the case of Korea, the design flood is calculated to indirectly method using Clark unit Hydrograph. Therefore, to obtain the main outflow parameters of Clark is very important. When estimating the parameters, optimum parameter estimation is very difficult due to lack of observation. In this study, storage coefficient according to numerous rainfall event is calculated to applying similarity characteristics analysis of basin, uncertainty analysis of storage coefficient was performed.

• 권지혜(한국시설안전공단 시설안전연구소 선임연구원) | Kwon, Ji-Hye
• 박지연(한국시설안전공단 시설안전연구소 연구원) | Park, Ji Yeon