DELIMITATION OF THE PROTECTION PERIMETERS OF DIR SPRINGS (EL KSIBA-OUAOUMANA, HIGH ATLAS, MOROCCO)

Abstract

The study area is located in the north of the province of Beni Mellal, it covers the Piedmont of the High Atlas between El Ksiba and Ouaoumana. The Jurassic occupies the quasi-totality of geological point of view and staked by springs of flow rates sometimes important. Faced with the increase in water demand and pollution problems, these sources are the subject of this study. The objective of this work is the delineation the protection perimeters (immediate, near and far) of the Dir sources located between El Ksiba and Ouaoumana. These perimeters were delineated based on the multicriteria analysis of multisource data (satellite images, geological, topographic, land cover, inventory of pollution sources, hydrological, hydrogeological and vulnerability). The integration of these data into the geographical information system ArcGis allows us to delimit three protective perimeters (immediate, near and far), whose surfaces are respectively of the order of 1600 m², 302 Km² and 1094 Km².