Derivation of the Rainfall Intensity, Duration and Frequency Equations for Makurdi, Nigeria

Information and adequate data on intensity–duration–frequency of rainfall are regularly required for a variation hydrologic, environmental hydraulic applications. This paper presents intensity-duration-frequency equations Makurdi, Nigeria. Rainfall intensities from Makurdi were used to establish empirically derived constants about thirteen different equations. These evaluated statistically using analysis variance (ANOVA), total error, model of' selection criterion (MSC), Coefficient Determination (CD), Correlation coefficient (R) Akaike Criterion (AIC), with the main objective selecting best equation location. The study revealed that intensity can be expressed in terms either amount time only, frequency or both duration rain return constants. Statistical evaluation correlation coefficients between 0.896 0.894, respectively. Model 12 was discovered most accurate prediction as against 15 presented literature. had highest Makurdi. According findings, functions rainfall, time, functions, which explains severity based values MSC, CD, AIC R.