Cartographie de la vulnérabilité des eaux souterraines à la pollution cas de la nappe d’El Mahmel –Khenchela

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Université Abbes Laghrour -Khenchela-
Vulnerability maps of aquifers are useful tools for contributing to the protection of groundwater resources against possible pollution. The purpose of this study is to determine the intrinsic vulnerability of el mahmel alluvial aquifer using the GOD model. The parameters studied are Type of aquifer (G) type of aquifer in terms of lithological factors (O), depth of the aquifer (D). The results obtained show four vulnerability classes ranging from very low to high. 1.23% of the study area is characterized by "very low" vulnerability and is located around the TZ5 well, 51.5% of the study area is characterized by low vulnerability, Moderate vulnerability class occupies 44 , 9% of the study area and a high vulnerability class occupies 2.35% of the study area and coincides with Sebkhat ouled Ammara in the north. A geographic information system was used for indexing and overlying different layer and creating the final vulnerability map.