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

Abstract

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 ground-water availability by enabling the intentional storage of water during wet peri-ods for subsequent use during dry seasons. This review examines the role of MAR in promoting sustainable groundwater management in semi-arid envi-ronments 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 chal-lenges. Case studies from India, the United States, Australia, and Mediterra-nean countries are discussed to illustrate the practical applications and out-comes of MAR initiatives. Furthermore, the review highlights how improved planning, systematic monitoring, and active community participation can en-hance 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.