Frequency distributions of the annual maximum discharges for selected rivers in Peninsular Malaysia / Khairul Azhar Samsuddin

There are many methods for flood estimation. The common used method in Malaysia is flood frequency analysis. For catchment with adequate length of streamflow data, flood frequency analysis by probability distribution is often used. For future development of the localised area near the selected river, the frequency distribution of the flow of water discharged from the river needs to be considered. The distribution of flow discharged by the river will provide a valuable information when designing structures appropriate to the required safety standard. Hence, a plethora of procedures have been recommended. However, the hesitation of practitioners to apply new methods has widened the gap between theory and practice. To serve the above purpose, informations about water discharge collected during the year 1960 to 1990 from various rivers throughout the country are important for future development. The data collected are analysed using Hydrological Frequency Analysis Package (HYFA) in order to obtain the frequency distribution of water discharge. In addition, a probabilistic analysis is carried out to compare various flood frequency distributions and parameter estimation methods.