REGIONAL FLOOD FREQUENCY ANALYSIS OF TARABA CATCHMENT

Abstract

ABSTRACT Regional Flood Frequency Analysis was used to generate an equation to predict mean annual discharge at any point within the Taraba region by relating the length, L of a stream and the Area, A of the catchment. A 23 years annual mean discharge records for three rivers at four stations was used. The homogeneity of the records was checked using the double mass curve method by plotting a graph to show consistency in the discharge records and Benson Regression Analysis was used to generate superscript factors for L and A respectively that is only peculiar to the Taraba region. The predicted annual mean discharge generated using the equation was subsequently compared with the Actual annual mean discharge and was found out to be 80% efficient. VI