Centre Universitaire de Recherche et d'Application en Télédétection (CURAT), U.F.R des Sciences de la Terre et des Ressources Minières (STRM), Université Félix Houphouët Boigny de Cocody, 22 B.P. 801 Abidjan 22, Côte d'Ivoire
To meet this need for permanent water availability for rural populations in the departments of Bouna and Doropo in Bounkani, Côte d’Ivoire (north-east), this study set out to identify ten sites for the installation of future boreholes designed to boost the production of water for human consumption. Five (05) panels of electrical resistivity tomography (ERT) were carried out using a Syscal-Pro Switch 36 resistivity meter (Iris Instruments, France) connected to 04 flutes of 36 metal electrodes regularly spaced 10 metres apart by 1070 m according to the pole-dipole (PD) configuration. The results identified conductive corridors within the crystallophyll basement, corresponding to fractures oriented preferentially E-W, NE-SW and NW-SE. The 2D electrical resistivity tomography panels also reveal a structure composed of two layers (alterites and fissured zone) superimposed on the sound bedrock. Hydrogeological analysis of lithological variations and geometric parameters of structural discontinuities (thickness of alterites, thickness, range of electrical resistivities and extension of fissured zone) have led to the proposal of eleven (11) sites suitable for the installation of high-volume boreholes. These future drilling points will help to alleviate the shortage of drinking water in the targeted localities in the area.