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ABSTRACT
Flood frequency analysis is the most important statistical technique in understanding the nature and magnitude of high discharge in a river. The objective of frequency analysis is to relate the magnitude of events to their frequency of occurrence through probability distribution.The various methods used in the estimation of design flood as a criterion for the design and construction of hydraulic structures which in most countries is undermined during the planning of such infrastructure thereby causing significant damages and loss of lifes and properties. Log 6 Pearson type III distribution model and Gumbel probability along side with three plotting position s of Weibull, Gringorten and Cunnane was used. The Gumbel probability distribution and Log Pearson type III distribution values were similar.
