With climate change and successive years of drought, conventional water resources are becoming increasingly scarce and unable to meet farmers’ water needs. These conditions result in the overexploitation of groundwater despite the presence of non-conventional water resources. Faced with this situation, sustainable and efficient resource management is necessary. The objective of this work is to develop a decision-making tool using a combination of two multi-criteria analysis methods, AHP and TOPSIS, for the sustainable and efficient management of various irrigation water resources in the Chtouka Ait Baha perimeter. To achieve the objectives of this work, the adopted methodology includes bibliographic research to understand all aspects of the addressed problem. Then, we conducted surveys in the study area among different management actors to gather information for the application of multi-criteria analysis methods. The developed tool aims to identify the most optimal alternatives according to experts, allowing for the sustainable management of irrigation water resources in the area by using the weights of 7 selected criteria. We chose 7 management alternatives: Coupling desalination Plants with Renewable Energy (A1); Financing through Subsidies and Public-Private Partnerships (A2); Reuse of Wastewater for Agricultural Purposes (A3); Modernization of the Irrigation Network (A4); Accelerated Management of the Aquifer by Quotas (A5); Utilization of Brine for Watering Halophyte Crops (A6); Development of Drought-Resistant Crops (A7). After applying the two methods, which were mainly based on the judgment of several stakeholders, we concluded that cost and sustainability are the most important criteria in decision making regarding water resources. We also determined that the best solutions to improve water resource management in the area are the modernization of irrigation networks, the development of drought-resistant crops, and the acceleration of quota-based management.