In Morocco, groundwater is of major importance in national economic policy, that's why groundwater management programs are periodically installed to prevent their qualitative and quantitative degradation. Our work comes to contribute to this program by studying the inherent vulnerability to pollution of the Skhirate-Temara region (NW Morocco) using the GOD-Foster method. The latter defines the vulnerability of aquifers based on the resistance to pollutant penetration and the mitigation capacity of the underlying layer of the saturated zone while neglecting the lateral migration of pollutants into the saturated zone. The vulnerability map will delineate areas vulnerable to pollution and will serve as a decision-making tool to take the necessary action.

the DRASTIC method was chosen because it can be adapted to different environments and because it combines the seven criteria that directly influence groundwater: depth, recharge, geology, soil, slope, unsaturated zone and conductivity. Located in the North West of Morocco, the Temara aquifer is a very important water resource, but it is overexploited and deteriorated as never before. This issue is of concern to decision-makers in the field of water management. The objective of this work is to create a map of vulnerability to pollution by the Bay of Geographic Information Systems (GIS) and the DRASTIC model. Thus, the highest vulnerabilities are located around the drinking water treatment plant of Ain Atiq, at the mouth of the Bouregreg River and scattered in places throughout the study area. The results of the physico-chemical analysis showed compatibility with the results of the DRASTIC model.

Water is a major strategic issue and a key factor in sustainable development for all countries around the world. In Morocco, groundwater has a major importance in the national economic policy. For this reason, sustainable water resources management programs are periodically installed to prevent their qualitative and quantitative degradation, which conditions future development and is part of the research strategy to optimize and mitigate environmental problems. The Temara water table, which extends over nearly 350 km 2 is part of these water resources that must be preserved. This issue is of increasing concern to researchers and decision makers in the field of water resources management. The hydrochemical study carried out on 48 samples taken in the study area during a sampling campaign carried out during the low water period showed that the water table has facies of chloride and sulphate calcic and magnesian type according to the Piper diagram. While the classification diagrams of Wilcox and Richards waters revealed the suitability of these waters for irrigation except for some points that present high contents of Nitrate (NO 3 -), Magnesium (Mg 2+ ), Sulphate (SO 4 2-) and Chloride (Cl -), linked to both the lithological nature of the enclosing formations and the effect of the agricultural activity which induces the phenomenon of return of irrigation water loaded with salts from the fertilizers used, towards the water table.

The city of Eljebha, Morocco, and its surroundings have always been affected by instability and slope failure, both natural and man-made. The Neogene conglomeratic clay formations, which form most of the city of Constantine, are extremely sensitive to the presence of water, which makes them susceptible to landslides. Therefore, to preserve the environment and endangered species, remote sensing has been designed to facilitate the monitoring and supervision of natural hazards and threats. The present paper deals with the detection of stable points by the new technique of permanent dispersers PSInSAR, as well as the subsidence rate with an accuracy in mm/year in the

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