University of Khartoum

Highlights On The Flooding Influence In The Flood Frequency Analysis In The Nile Basin

Highlights On The Flooding Influence In The Flood Frequency Analysis In The Nile Basin

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Title: Highlights On The Flooding Influence In The Flood Frequency Analysis In The Nile Basin
Author: Sonbol, Mohamed A.; Abdo, Gamal; Willems, P.; Abdel-Motteleb, Mohamed
Abstract: In many water engineering applications, the accurate description of extreme surface water states, i.e. flooding, and their recurrence rates is of primary importance. This description can be done either based on long-term time series of measurements or long-term simulation results from mathematical models. For this purpose, an extreme value analysis is needed. In extreme value analysis the tail of the distribution describing the probability of occurrence of extreme events is analyzed and modeled by a separate distribution. In this study, the flooding influence on the flood frequency analysis for some rivers in Sudan, have been done. These rivers are; Blue Nile at Ed Deim at the border with Ethiopia, River Rahad at Hawata, River Dinder at Gwasi, River Jur at Wau, Rivers Pibor and Akkobo (tributaries of River Sobat). The probability distributions are derived based on river observations. The testing and fitting of the flood frequency curves have been done based on the central part of the distributions as well as the tail of these distributions. The tail of the distribution represents the flooding influence in the river because of the high values of the quantiles which having both high
URI: http://khartoumspace.uofk.edu/123456789/27693


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