Fitting Probability Distribution Functions To Discharge Variability Of Kaduna River
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2013, Vol 3, Issue 5
Abstract
In reliability based design of flood protection structures, frequency analysis aimed at determining the occurrence frequency or return periods is an indispensable tool. A frequency analysis was performed by fitting probability distribution functions of Normal, Log Normal Log pearson type III and Gumbel to the discharge variability of Kaduna River at Kaduna South Water Works. The Kolmongonov- Smirnov (K-S) goodness-of-fit test was used to check whether the mean annual discharge variability of the river basin is consistent with a regional GEV distribution for the site. From the measure of discrepancy, it was observed that at selected level of significance of α=1%, α=5% and α=10%, all the four theoretical distributions functions were acceptable.
Authors and Affiliations
Haruna Garba
Keywords
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