Managed Aquifer Recharge (MAR) as a Tool for Sustainable Groundwater Management in Semi-Arid Regions

Groundwater serves as the principal source of water supply in many semi-arid regions. However, excessive extraction, contamination, and the impacts of climate change have rendered this resource increasingly unreliable. Managed Aquifer Recharge (MAR) has emerged as a viable strategy to enhance groundwater availability by enabling the intentional storage of water during wet periods for subsequent use during dry seasons. This review examines the role of MAR in promoting sustainable groundwater management in semi-arid environments through an analysis of field-based projects, modelling studies, and policy frameworks. It outlines the fundamental principles and techniques of MAR while addressing the associated technical, social, and regulatory challenges. Case studies from India, the United States, Australia, and Mediterranean countries are discussed to illustrate the practical applications and outcomes of MAR initiatives. Furthermore, the review highlights how improved planning, systematic monitoring, and active community participation can enhance the effectiveness of MAR interventions. Overall, the findings suggest that MAR represents a promising approach for strengthening water security and building climate resilience in semi-arid regions, particularly when integrated with sound governance and inclusive stakeholder engagement.

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