Publication Date: 2023/10/12
Abstract: The Bonoumin and Gourou watersheds in the city of Abidjan have been subject to repeated flooding in recent years. In order to have a better understanding of the morphometric parameters influencing the hydrological functioning of these two whatershed, this manuscript analyses their morphometric characteristics. The methodology applied consisted in analysing the digitals elevations models (DEM) of the two watersheds using GIS. These morphometric characteristics have been calculated using empirical formulae. It results from this morphometric analysis that the two watersheds are elongated in relation to their Gravelius coefficient (2.36 and 2.23 respectively for the Bonoumin and Gourou watershed). In addition, the relief of these two basins is dominated on average by low relief and no to gentle slopes.This leads to relatively long water concentration times at their respective outlets. (4H51min44s and 3H51min13s respectively for the Bonoumin and Gourou watershed).
Keywords: Morphometric Characteristics, Watersheds, Flooding, GIS, DEM.
DOI: https://doi.org/10.5281/zenodo.8433588
PDF: https://ijirst.demo4.arinfotech.co/assets/upload/files/IJISRT23SEP1826.pdf
REFERENCES