Analisis Curah Hujan Untuk Pendugaan Debit Puncak Dengan Metode Rasional Pada Das Bahbolon Kabupaten Simalungun

Abstract

Rainfall Analysis by Rational Method is a kind of Hidrologycal Analysis which purposed to estimate the volume of rainfall or debit in various return periods. Peak debit Estimation by this following way needs rainfall data during 22 years for being analized step by step, beginning from the Statistic Parameters, Distribution of frequency, Test of Distribution, Rainfall design, until the quantity of Intensity(I). By using The function of Landscape data and the characteristic of the River Basin, we can determine the quantity of Run off Coeffisient (C). Both of the parameters (I and C) are using for determining The Peak Debit of River Basin. The Usefull of this experiments for society and environment are being the important ideology for the construction of water flood controlling which able to pretend the water flood destruction which often being happened by this several times, especially in the Bah Bolon River Basin, District of Simalungun.