Abstract
The purpose of a dam is to control the water flow in a river, stream, sea, or lake. However, the water storage capacity of the dam can decrease over time due to the sediment that settles in the reservoir. Therefore, it is important to manage the water resources well and prevent problems like floods. The frequency analysis shows that the Pearson III and Gumbel Log probability distributions are the best methods to analyze the data because they have the smallest deviation values. The Generalized Extreme Value (GEV) probability distribution is the second-best method and can also be used. The GEV distribution method gives higher results for the maximum discharge in 50-, 00- and 1000-year return periods with percentages of 0.10%, 3.04% and 12.35%.
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