This review paper presents a comprehensive assessment of monitoring techniques used for evaluating the performance of Managed Aquifer Recharge (MAR) projects. It covers both direct methods, such as water level measurements, groundwater quality monitoring, tracer studies, and geophysical methods, and indirect techniques, including remote sensing, GIS, and spatial analysis. By systematically examining the strengths, limitations, and applications of each approach, the review provides valuable insights into their effectiveness across various hydrogeological settings and project scales. The paper synthesizes findings from studies conducted in regions affected by water scarcity, salinization, and climate change, demonstrating MAR's potential as a sustainable water management strategy. Key findings highlight MAR's effectiveness in replenishing depleted aquifers, mitigating groundwater contamination, and enhancing water security. However, challenges such as site-specific applicability, economic feasibility, and potential geochemical risks are also discussed.