FACTORS FOR ASSESSMENT OF GROUNDWATER VULNERABILITY IN SEMI-ARID AND ARID ZONES
Journal Title: Larhyss Journal - Year 2016, Vol 27, Issue 27
Abstract
Aquifer protection from pollution is an important action for a development and wise exploitation of the groundwater resources. In arid and semi-arid zones, rare surface water resources make groundwater the principal source of drinking, industrial and agricultural exploitation water. The idea of this work is to present the different factors participating in natural protection and assessing the groundwater vulnerability in a particular climatic context “arid and semi-aridâ€, so four factors are chosen for vulnerability mapping: lithology, water surface depth, infiltration conditions and effective rainfall. Each parameter is classified to identify a large variability. The vulnerability index is calculated by multiplication of four factor’s rating. A pilot site, the ElBayadh syncline is used to test this methodology in terms of typical physical and hydrogeological characteristics. The vulnerability map shows about 75% of the surface pilot site is classified as very high vulnerability. These areas could consequently be protected for future development.
Authors and Affiliations
KERZABI R. | Laboratoire n° 25 «PRHPM-LE-CT» Département des Sciences de la Terre et de l’UniversFaculté SNV-STU—Université de Tlemcen, Le Nouveau Pôle Universitaire 2ème Tranche, Tlemcen 13000, Algeria, MANSOUR H. | Laboratoire Géoressources, Environnement et Risques Naturels, Département des Sciences de la Terre, Faculté FSTGAT— Université d’Oran, BP 1524, El M’naouer, Oran 31000, Algeria, YOUSFI S. | Laboratoire n° 25 «PRHPM-LE-CT» Département des Sciences de la Terre et de l’UniversFaculté SNV-STU—Université de Tlemcen, Le Nouveau Pôle Universitaire 2ème Tranche, Tlemcen 13000, Algeria, MUDRY J. | Laboratoire Chrono-Environnement, UMR Université de Franche Comté, 16, Route de Gray, Besançon 25000, France, BENCHAIB A. | Laboratoire des Systèmes Dynamiques et Applications, Département de Mathématiques, Faculté des sciences, Université de Tlemcen, BP 119, Tlemcen13000, Algérie, BENTOUMI M. S. | NALTIS Communication, rue Derrar Abderrahmne Tlemcen 13000, Algérie
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