Impact de la répartition spatiale de la pluviométrie et de l'occupation du sol sur la recharge des aquifères du bassin versant du Bandama en Côte d'Ivoire

The spatial distribution of rainfall and land use has important consequences for the hydrological and hydrogeological behaviour of a watershed. This study aims to better understand the impact of this distribution on aquifer recharge in the Bandama watershed. The spatialization of rainfall from isohy...

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Bibliographic Details
Published inInternational journal of innovation and applied studies Vol. 27; no. 4; pp. 1024 - 1036
Main Authors Kouamé, Alexis Kassi, Adon, Christian Gnangui, Kouassi, Michel Amani, Koudou, Aimé, Kouamé, Fernand Koffi
Format Journal Article
LanguageFrench
Published Rabat International Journal of Innovation and Applied Studies 01.11.2019
Subjects
Aquifers
Hydrogeology
Hydrology
Land use
Moisture content
Rainfall
Seepage
Spatial distribution
Water balance
Watersheds
Ivory Coast
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Summary:The spatial distribution of rainfall and land use has important consequences for the hydrological and hydrogeological behaviour of a watershed. This study aims to better understand the impact of this distribution on aquifer recharge in the Bandama watershed. The spatialization of rainfall from isohyets, shows that it varies between 1200 mm and 1700 mm. The basin displays five (5) classes of land use that are: (1) dense forests, (2) open forests and / or savannahs, (3) shrub savannas, (4) bare soils and localities, and (5) water. The water balance shows that the excess which gives the surface flow and seepage is 348 mm upstream (Korhogo), and only 119 (Yamoussoukro) downstream. The total amount of water flowing over the Bandama basin at Yamoussoukro is 164.86 mm; which corresponds to an annual volume of run-off water of 4.338109m3. The infiltrated water slide is 73.18 mm; which equates to an annual quantity of infiltrated water of 1.874109m3.
ISSN:2028-9324