Probable maximum precipitation and probable maximum flood extent analysis using L-moment and Hershfeild methods (Case study of Jiroft Dam)

Flood of destructive natural phenomena that occur at any time, which affects damage. The appropriate hydraulic structures help to control this phenomenon. The most important information needed for the design of structures, flood information maximum likelihood and maximum precipitation is likely. This study aimed to investigate how to extend these two parameters has been done in the area of Jiroft Dam. In the research of Hershfeild statistical approach for estimating the Probable maximum precipitation and linear moment method was used to estimate the probable maximum flood. Finally, using kriging interpolation maps were drawn for the range of these two parameters.The results showed that the range of probable maximum precipitation in the north-west to south-east and south-east area of focus is the maximum possible flood. The results of this study can contribute to the monitoring and reduce damages caused by floods.