Flood Frequency Analysis, Case Study: The River Gash

Abstract

this study is concerned with application of statistics in hydraulic engineering . most hydrologic events follow certain pattern ; statistics and and statistical modling help describe the behavior of the matter of study with ease . the study area was described thoroughly, listing all aspects regarding hydrologic properties of the river gash and its catchment area and its recorded history and behavior . in addition, hydrologic statistic and frequency analysis methods which are frequently used in hydraulic engineering were illustrated in the study. used in this research approach for data fitting were both, the normal distribution and the extreme value type one. add to that, the return period of the data was plotted to predict the flood water levels using the cumulative distribution function .