Hydrologic and Morphometric Analysis of Ofu River Sub-Basin using Remote Sensing and Geographic Information System

Authors

  • M. I. Alfa University of Jos
  • M. A. Ajibike Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria
  • D. B. Adie Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria
  • O. J. Mudiare Department of Agricultural and Bioresource Engineering, Ahmadu Bello University, Zaria, Nigeria

Keywords:

Delineation, GIS, Morphometric analysis, Ofu river sub-basin, Remote sensing

Abstract

The morphometric characteristics of a river basin are very important factors in watershed hydrology. The morphometric analysis of the Ofu River sub-basin was carried out in this study to assess its morphologic and hydrological characteristics as well as its flood potentials based on the morphological characteristics. The study was carried out using remotely sensed spatial data analysed using Geographical Information Systems (GIS). The morphometric parameters analysed were the areal, linear, and relief aspects of the sub-basin. The results showed that Ofu river sub-basin covers a total area of 1604.56 km2 and a perimeter of 556.98 km covering parts of Kogi and Enugu States in Nigeria. The sub-basin has 3rd order river network based on the Strahler’s classification with a dendritic drainage pattern and moderate drainage texture. The values of bifurcation ratio, drainage density, circularity ratio, elongation ratio, form factor, stream frequency and drainage intensity indicate that the sub-basin is elongated and would produce a flatter peak of direct runoff for a longer duration implying that the sub-basin is morphometrically less susceptible to flood and that any flood flow that may emanate from it would be easy to manage.

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Published

2019-03-11

Issue

Vol. 16 No. 2 (2019)

Section

Articles

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