Vol: 1 Issue: 1
URBAN STORM WATER DRAINAGE SYSTEMS MODELING FOR OBUBRA CENTRAL SENATORIAL DISTRICT, CROSS RIVER STATE OF NIGERIA.
Obio, E. A, Ahaneku, I.E., Onwuka, U.N.
Abstract:
The modeling of storm water drainage systems of Obura catchment area of Cross River State, Nigeria to address problem of local flooding. A current metre was used alongside a speed boat to carry out measurement of discharge as a dependable variable while cross sectional area, velocity, width and depth of channel was also determined as independent variables. The data so measured were subjected to developed a model whose result was Q = -2417.75 +11.68D + 0.33W + 1772.15V + 1.24A. The model gave a correlation r value of 0.994. Verification of the model was carried out and an r value of 0.995 was obtained all indicating a strong correlation. Furthermore, a validation test was conducted using velocity-area method for water flow measurement having a relationship as Q = AV, a correlation value of 1.0 The study recommends that, proper design, computations, adequate constitutions and routine maintenance of drainage channels be made ensuring that the velocity satisfied the minimum requirement.
Keywords: Drainage, Urbanization, Storm water, Molding, Catchment, Flooding.