The project was implemented in six select areas in different hydrogeological environs of the country as depicted. The area includes the following parts of country.

A summary of the pilot areas have been tabulated as follows :- Aquifer Mapping in Pilot area

Pilot Area	Hydrogeological Terrain
Alluvial plains of Ganga basin in Watershed GNDK013, Patna District, Bihar (~500 sq km)	Alluvial plains of Ganga basin	VIEW REPORTS
Alluvium overlying hard rocks in Baswa-Bandikui, Dausa District, Rajasthan (~633 sq km)	Alluvium overlying hard rocks	VIEW REPORTS
Basaltic traps underlain by Gondwanas in Watershed WGKKC-2, Nagpur District, Maharashtra (~360 sq km)	Basaltic traps underlain by Gondwana	VIEW REPORTS
Crystalline rocks in Parts of Tumkur District, Karnataka (~376 sq km)	Weathered & Fractured Granite Gneiss & Schist	VIEW REPORTS
Coastal sediments in Lower Vellar Watershed, Cuddalore District, Tamil Nadu (~234 sq km)	Coastal sediments	VIEW REPORTS
Part of Thar Desert Terrain in Jaisalmer District, Rajasthan (~505 sq km)	Desert Terrain	VIEW REPORTS

On the basis of integration of data generated from various studies of hydrogeology & geophysics, aquifers have been delineated and characterized in terms of quality and potential. Various maps have been prepared bringing out Characterization of Aquifers, which can be termed as Aquifer maps providing spatial variation (lateral & vertical) in reference aquifer extremities, quality, water level, potential and vulnerability (quality & quantity).

On the basisof aquifer characterization, issues pertaining to sustainable aquifer management in the area have been identified. Initially, a conceptual model has been developed for the pilot area and subsequently, a mathematical model has been formulated simulating the field situation, which was calibrated and validated with the field data. Various scenarios have been tested in the model to study the response of the aquifer to various stress conditions and predictive simulations have been carried out up to the year 2025. Aquifer response Model has been utilized to identify a suitable strategy for sustainable development of the aquifer in the area.

The National Project on Aquifer Management, commonly known as NAQUIM, represents a comprehensive initiative by the Central Ground Water Board to map and manage the country's groundwater resources with scientific precision. This ambitious program focuses on understanding the complex geologic and hydrologic systems that govern aquifer behavior across diverse terrains. From the alluvial plains to basaltic traps, each hydrogeological setting presents unique challenges and opportunities for sustainable water management. The project employs a systematic methodology that combines field studies with advanced analytical techniques to evaluate aquifer characteristics, recharge potential, and extraction sustainability. Through this work, communities and planners gain critical insights into the long-term viability of their groundwater supplies.

The pilot study phase of NAQUIM was implemented across six carefully selected areas representing different hydrogeological environments found throughout the country. These pilot areas included alluvial plains of the Ganga basin, regions where alluvium overlies hard rock formations, and areas underlain by basaltic traps, among others. Each pilot site covered several hundred square kilometers, allowing for detailed characterization of aquifer systems at a meaningful scale. The lessons learned from these pilot studies have been instrumental in refining the national methodology for aquifer mapping. By testing approaches in varied geological settings, the project team developed robust protocols that could be applied across the diverse hydrogeological terrains of India.

Groundwater management requires a thorough understanding of both the geologic framework and the hydrologic processes that control water movement through subsurface materials. Aquifer mapping involves delineating the extent, thickness, and properties of water-bearing formations, as well as assessing water quality and recharge mechanisms. The NAQUIM project integrates data from existing wells, geophysical surveys, and remote sensing to build comprehensive three-dimensional models of aquifer systems. This scientific approach enables informed decision-making about groundwater extraction, artificial recharge, and conservation measures. The ultimate goal is to ensure that groundwater development remains within sustainable limits, protecting this vital resource for future generations while meeting present needs.

The Central Ground Water Board has established expert committees and technical guidelines to ensure the highest standards in aquifer mapping and management. These bodies oversee the methodology, review findings, and provide strategic direction for the national program. The project emphasizes capacity building and knowledge sharing among state groundwater agencies, research institutions, and field practitioners. Regular training programs and workshops help disseminate best practices and innovative techniques for groundwater assessment. The collaborative framework ensures that aquifer management strategies are grounded in local realities while benefiting from national expertise. This institutional approach has been key to building a sustainable groundwater management framework that can adapt to changing conditions and emerging challenges.

Aquifer sustainability is a pressing concern across India, where groundwater supports agriculture, drinking water supplies, and industrial needs in virtually every state. The NAQUIM project addresses this challenge by providing the scientific foundation for informed groundwater governance. Through detailed aquifer mapping, the program identifies areas of overexploitation, regions with potential for additional development, and zones suitable for artificial recharge. The information generated supports state and local authorities in implementing groundwater management plans tailored to specific hydrogeological conditions. By promoting a better understanding of aquifer systems, the project contributes to the long-term sustainability of groundwater resources, helping to balance development needs with the imperative of resource conservation for future generations.