Author(s)

A.M. Negm, A.H. El-Sayed & A.A Alhamid

Abstract

This study presents the time series analysis of the natural flow data of the River Nile at four different sites (Awasn, Hassanab, Tamaniat and Malakal) for the period of 70 years using the periodogram method. The contribution of the different components constituting the time series was computed. It was found that the natural flows consist mainly of three components (trend, periodic and stochastic). The stochastic component is dominant during both flood and dry periods. The periodic component was proved to be of complex nature. The analysis of the subseries of equal lengths revealed that the small periodicities are not dominant for all the subseries. The analysis of the annual flows at t

Keywords