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Modeling of the Hydraulic Characteristics of Owerri Urban Storm Water in Nigeria
Current Issue
Volume 4, 2017
Issue 2 (March)
Pages: 16-24   |   Vol. 4, No. 2, March 2017   |   Follow on         
Paper in PDF Downloads: 68   Since Jun. 11, 2017 Views: 421   Since Jun. 11, 2017
Authors
[1]
A. L. Okojie, Soil and Water Engineering, Federal University Technology, Owerri, Nigeria.
[2]
N. A. A. Okereke, Department of Agric Engineering, Federal University Technology, Owerri, Nigeria.
[3]
S. N. Asoegwu, Department of Agric Engineering, Federal University Technology, Owerri, Nigeria.
Abstract
This study was carried out by conducting the modeling of the hydraulic characteristics of the urban storm water of Owerri metropolis, Imo State. The parameters analyzed include Discharge, Area of drainages, Wetted perimeter, Velocity, Inlet and Outlet elevations of drains, sum total of channel length, Drainage density, Rainfall, Basin area, Impervious of the area and Gradient. A power regression model was developed ; Y = 0.109469 * x10.033068 *x2─1.05366 * x30.173452 * x40.689028 * x55.296624 * x60.072382, and the modeled results are [2.2920, 2.6709, 3.8919, 4.0642, 3.9051, 5.3527, 5.7628, 3.1398, 2.9155(m3/s)], which when compared with the field results, their respective differences ranges from -0.2745 to +0.3020. The variations between the modeled results and field results are all within an acceptable limits of ± 5% to 30%, with a Standard Estimation Error (SEE) of 0.4783 and coefficient of determination (R2) of 0.966.
Keywords
Storm Water, Drainage Density, Owerri and Drainage Systems
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