This study carried out on the Marahoué (Bandama) watershed at the Bouaflé hydrometric station (Côte d'Ivoire) aims to characterize climate variability and its impact on the variations and availability of water resources in the watershed of the Marahoué (Bandama) in Ivory Coast. This characterization was based on the use of rainfall, thermometric and hydrometric (flow) data collected over the period 1961-2017. Thus, several methods were used (standard index of normalization, Lang method and Maillet's law). There is a decrease in precipitation and flow, however the temperature is rising. A low storage capacity of soil reservoirs in the Marahoué watershed (Bandama) has been demonstrated. Thus, low groundwater reserves were evaluated characterized by a low average drying off coefficient of 3,4.10-2 j-1, a short drying period of nearly a month and a low volume of water mobilized by the aquifers of 0.92 Km3.
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