Hydrogeochemical characterization of the areas of exploitation of the CBG sites: cas of the plateaus of N'Dangara and Boundou Wandé, Sous-préfecture de Sangarédi, Prefecture of Boké, Republic of Guinea

Abstract This work aims to analyze the quality of groundwater in riparian areas bauxitic plateaus N'Dangara and Boundou Wandé operation by CBG (Compagnie des Bauxites de Guinée). The geology study area consists mainly sedimentary formations Devonian faro, Neogene Quaternary. Three water measurement sampling campaigns on two were carried out with determination piezometric measurements physic-chemical parameters. showed that general flow direction is dispersed. flows at are from center plateau north south southwest. It can be seen reflects overall relief deposit conditioned its geomorphological framework. emerges analysis physical chemical parameters well consumable. However, wells MW15, MW16, MW17, MW18 MW21 a low pH (4.84 5.13) may present certain nuisance for consumption because it corrosive. Analysis Piper diagram hydrogeochemical facies (calcium magnesium bicarbonate sodium potassium carbonate facies). this strongly suggests continuous monitoring around order meet demand supply communities without compromising ability future generations requirements.