Water, Год журнала: 2025, Номер 17(9), С. 1317 - 1317

Опубликована: Апрель 28, 2025

Groundwater resources in the Kou sub-basin of southwestern Burkina Faso play a critical role supporting domestic water supply, agriculture, and industry around Bobo-Dioulasso, second-largest city Faso. This study synthesizes over three decades research on groundwater vulnerability, recharge mechanisms, hydrochemistry, residence time across region’s sedimentary aquifers. The basin hosts complex stratified system confined unconfined aquifers, where hydrochemical analyses reveal predominantly Ca–Mg–HCO3 facies, alongside local nitrate (0–860 mg/L), iron (0–2 mg/L) potassium (<6.5 mg/L–190 contamination. Vulnerability assessments—using parametric (DRASTIC, GOD, APSU) numerical (MODFLOW/MT3D) models—consistently indicate moderate to high especially alluvial urban/peri-urban areas. Isotopic results show deep for greater than 50 years with dating from 25,000 42,000 years. data confirm vertically system, aquifers holding fossil shallow units showing recent recharge. Recharge estimates vary significantly (0–354 mm/year) depending methodology, reflecting uncertainties climatic, geological, anthropogenic parameters. review highlights major methodological limitations, including inconsistent quality, limited spatial coverage, insufficient integration socio-economic drivers. To ensure long-term sustainability, future work must prioritize high-resolution hydrogeological mapping, multi-method modeling, dynamic vulnerability assessments, strengthened governance. synthesis provides foundation improving resource management one Faso’s most strategic aquifer systems.

Язык: Английский