The Maghreb countries (Tunisia, Algeria, and Morocco) are among the regions suffering from increasing water scarcity in light of the climate changes, especially since twothirds of the lands of the Maghreb countries are characterized by a dry and semi-arid climate due to their desert nature, in addition to the effects of population growth and increasing human activities. This paper aims at monitoring the most important future impacts on water resources in the Maghreb and identifying strategies for adaptation and mitigation of climate change within the framework of sustainable management, relying on the projection of global scenarios for greenhouse gas emissions, which are among the main inputs to regional climate models that It aims to project future climate behavior.