In this study, the urban runoff models, ILLUDAS model and SWMM, are analyzed the probable peak discharge and discharge using rainfall distribution by Huff`s method at Bum-uh chun area in Taegu city. The probability rainfall and intensity is analyzed b...
In this study, the urban runoff models, ILLUDAS model and SWMM, are analyzed the probable peak discharge and discharge using rainfall distribution by Huff`s method at Bum-uh chun area in Taegu city. The probability rainfall and intensity is analyzed by Pearson-Ⅲ type. The rainfall duration, 90 minutes, is determined by the critical duration computed the maximun peak discharge for some rainfall durations. The peak discharge according to Huff`s rainfall distribution types compute in order of type 3, type 4, type2, and type 1, so Huff`s 3 type is selected as an adequate rainfall distribution in Bum-uh chun basin. ILLUDAS model and SWMM are shown as good models in Bum-uh chun, but SWMM is computed higher peak discharge than ILLUDAS model, so SWMM is shown as the adequate urban runoff model for the design of interior drainage in urban basin.