The objective of this study is to map the litho-structural and hydrodynamic parameters of the aquifer system in the Boundiali and Kouto departments. The maps were created based on hydrogeological data from 307 boreholes. The altered thickness map shows that alteredthicknesses between 40 and 60 meters are rare, while the saturated thicknesses of the weathered layers vary from 0 to 54 meters. Water inflows are found exclusively in the bedrock, with the most productive ones located between depths of 25 and 60 meters. According to the piezometric level map, the main watercourse in the study area is fed by groundwater. The transmissivity (1.13 x 10⁻⁶ to 2.21 x 10⁻⁴ m²/s), specific (0.02 to 4.35 m²/h), and hydraulic conductivity (0 to 2.8 x 10⁻³ m/s) maps indicate that these parameters are generally low across the study area.