Impacts of Climate Change on Water Stress in West Africa: Case Study of the N’zi (Bandama) Watershed in Côte d'Ivoire

Amani Michel Kouassi *

Laboratoire du Génie Civil, des Géosciences et des Sciences Géographiques, Département de Formation et de Recherche (DFR) des Sciences de la Terre et des Ressources Minières (STeRMi), Institut National Polytechnique Félix Houphouët-Boigny (INP-HB), BP-1093, Yamoussoukro, Côte d’Ivoire.

Asaph Yahot Joël Gnangouin

Laboratoire du Génie Civil, des Géosciences et des Sciences Géographiques, Institut National Polytechnique Félix Houphouët-Boigny (INP-HB), École Doctorale Polytechnique (EDP), B.P.-1093 Yamoussoukro, Côte d’Ivoire.

Gbangbo Remis Konan

Laboratoire Sciences des Procédés Chimiques, Alimentaires et Environnementaux, Département de Formation et de Recherche (DFR) Infrastructures et Transport (IT), Institut National Polytechnique Félix Houphouët-Boigny (INP-HB), BP 1093 Yamoussoukro, Côte d’Ivoire.

Relwindé Abdoul-Karim Nassa

Laboratoire du Génie Civil, des Géosciences et des Sciences Géographiques, Institut National Polytechnique Félix Houphouët-Boigny (INP-HB), École Doctorale Polytechnique (EDP), B.P.-1093 Yamoussoukro, Côte d’Ivoire.

*Author to whom correspondence should be addressed.


Abstract

The increased pressures on water resources linked to climate and societal changes are recognized as global challenges. The objective of this study is to analyze the impacts of climate change on the water stress of populations in the N'zi (Bandama) watershed in Ivory Coast. The data used (flows, populations, etc.) cover the period 1991-2020. An approach based on the comparison of water resources (standard normalization index, linear regression method, frequency analysis, flow rate index, etc.) and demands through the water needs satisfaction rate index, was applied at interannual and monthly scales. This approach has made it possible to identify the major trends in water stress in Dimbokro populations. It appears that on an interannual scale, the N'zi watershed is in a situation of water stress. The seasonal scale analysis shows that the city of Dimbokro experiences six months (December to May) of water stress. In the future horizons, the water stress of the city of Dimbokro could intensify.

Keywords: Climate change, water needs satisfaction index, water stress, N’zi (Bandama), Côte d’Ivoire


How to Cite

Kouassi, Amani Michel, Asaph Yahot Joël Gnangouin, Gbangbo Remis Konan, and Relwindé Abdoul-Karim Nassa. 2022. “Impacts of Climate Change on Water Stress in West Africa: Case Study of the N’zi (Bandama) Watershed in Côte d’Ivoire”. International Journal of Environment and Climate Change 12 (12):472-83. https://doi.org/10.9734/ijecc/2022/v12i121484.

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