TITLE:
Mapping of Groundwater Potential by Multicriteria Analysis: Case of the Departments of Yamoussoukro and Toumodi (Central Cote d’Ivoire)
AUTHORS:
Atte Guillaume Atte, Arthur Brice Konan-Waidhet, Tanina Drissa Soro, Abé Parfait Sombo, Jean Biemi
KEYWORDS:
Drilling, Fissured Aquifer, Groundwater, GIS, Cote d’Ivoire
JOURNAL NAME:
Journal of Geographic Information System,
Vol.14 No.3,
June
29,
2022
ABSTRACT: This study focuses on the problem of access to drinking water in the fractured areas of the departments of Yamoussoukro and Toumodi. The problem has become more acute since most of the boreholes drilled have failed. The main objective of this study is to map the areas that are favorable for the installation of large boreholes in the departments of Yamoussoukro and Toumodi in order to increase the population’s drinking water needs. Hydroclimatic and cartographic data, technical surveys of boreholes and satellite images were used to conduct this study. The AHP multi-criteria analysis method was adopted. It consists in aggregating the criteria by weighting and allowed to combine these different data to generate maps of groundwater availability, accessibility and exploitability indicators. These different indicators were then considered as criteria and combined using the full aggregation technique to produce the water potential map. These results show that the study area has significant groundwater reserves with nearly 63% of these areas being favorable for the establishment of large flow boreholes. This study provides some answers to the question of groundwater resources and could be used as a decision support tool in the execution of groundwater collection works in the departments of Yamoussoukro and Toumodi in order to avoid the high percentage of drilling failures encountered in past projects.