Emperical Correllation of Hydraullic Characteristics of Ikpa River Akwa Ibom State Nigeria

Abstract

The study examined the hydraulic properties of the of IKPA river and and its impact on sediment transport. Measurements such as depths of the river, Top width, discharges were measured along the stretch of the river. The cross section of the river was divided with ranging poles with maximum distance of 4m apart. The maximum velocity of the river was 0.94m/s while the minimum velocity of 0m/s was recorded in the cross-section of the rivers. The maximum velocity of the river was recorded at the second vertical and the minimum velocity was recorded at the banks of the river and also on the bed of the river. The regression analysis of the velocity profile against depth at different stages showed a quadratic relationship between the velocity and depth of the river with R2 value of 0.962 which occurred at the 3rd vertical, of stage 2.2m. The highest discharge recorded at the stages of the river was 9.79m3/s which occurred at stage 3.28m. Regression analysis of the average depth against the discharge showed a power function relation which a maximum R2 value of 0.90. Results showed that the maximum discharge of the river recorded was 33.71m3/s at the velocity of 0.67m/s and at the depth of 1.73m from the bed of the river.