Determination of Probability Distribution for Annual Peak Discharges and Example of Giresun Aksu Stream
Fatih SAKA Hasan COŞKUN Hatice Betül Umarusman Mustafa Ruşen DEMİRKOL Onur TANRIVERDİ Rıdvan KATIRCILAR
AbstractFlood prediction methods can be classified into two groups as deterministic and statistical methods. In statistical methods, it is necessary to test to which distribution fit the data. In this study, the suitability of 43 yearly maximum discharge values of discharge gauging station (DGS) 2213 for Log-normal, Gamma, Extreme type-I and Log-pearson type-III distributions in the Eastern Black Sea Basin was investigated by Chi-square test. The Gamma distribution, which shows the lowest Chi-squared value, was determined as the most appropriate among the distributions for the DGS discussed. It is also understood that Extreme type-I distribution can also be used.