Département de Géologie,

Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. ABSTRACT: This work provides the map of mass movements hazard, which presents the most common phenomena in the N’fis watershed. The study is part of the contribution to the watershed management, which is highly vulnerable to natural hazards, and also in the context of the production of information and awareness documents. The methodology is the creation of thematic maps in GIS by combining, determining factors (slope, lithology, fracturing) in triggering land instabilities in the region, following decision rules. These maps are subsequently combined to yield a map of mass movements hazard. The latter shows four areas of susceptibility to hazard: low, medium, high and very high. The class of high susceptibility to hazard occupies 50.83 % of the surface of the study area. This shows the sensitivity of the area to potential risks. These results were compared to the realities on the ground, allowing the validation of the method used