Morphometric Analysis of Topographic Surfaces in Highly Urbanized Tropical Environments: Case of the Bonoumin and Gourou Watersheds (Abidjan, Ivory Coast, West Africa)

Authors : Kouadio Prudence AKA; Yao Blaise KOFFI; Anzoumanan KAMAGATE; Kouassi Ernest AHOUSSI; Amani Michel KOUASSI

Volume/Issue : Volume 8 - 2023, Issue 9 - September

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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.


Paper Submission Last Date
31 - December - 2023

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