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.

Aquifer mapping is a structured approach to understanding the occurrence, movement, and quality of groundwater beneath the surface. By integrating geologic, hydrologic, and field data, scientists develop a clearer picture of subsurface systems and how they respond to extraction and recharge over time. This kind of regional study supports long-term planning for water security across diverse landscapes and climatic conditions, helping decision-makers balance competing demands on a shared resource while safeguarding ecosystems that depend on consistent subsurface flow.

Pilot studies play an important early role in aquifer mapping efforts because they allow methodologies to be tested in real settings before being scaled nationwide. A small set of representative areas can reveal how different hydrogeological terrains respond to the same set of tools and procedures. Insights gathered from these early sites help refine field protocols, guide data interpretation, and identify gaps that larger programs must address. In this way, pilots serve as practical learning laboratories for national water management initiatives.

The terrain of a region strongly shapes how aquifers are studied and managed. Alluvial plains, weathered hard rock zones, basaltic formations, and coastal belts each present distinct challenges for groundwater exploration. Sedimentary basins often yield productive porous aquifers, while fractured or layered systems require different drilling and sampling strategies. Recognizing these differences early allows mapping teams to adapt their approach, choose appropriate indicators, and produce results that reflect the true behavior of water stored beneath varied Indian landscapes.

A typical pilot mapping exercise brings together multiple streams of information. Hydrogeologists review existing borehole records, examine soil and rock profiles, and conduct pumping tests to estimate aquifer properties. Geophysical surveys help trace subsurface structures, while water level monitoring reveals seasonal trends. Combining these inputs into a coherent spatial framework gives planners a practical tool for assessing availability, identifying vulnerable zones, and recommending sustainable withdrawal limits suited to local conditions and recharge behavior.

When pilot findings are documented and shared, they contribute to a growing national understanding of groundwater resources. Reports from individual study areas become reference points for state agencies, research institutions, and local administrations seeking to design their own management plans. Over time, this cumulative knowledge supports more consistent approaches to aquifer protection, encourages cooperation across regions, and strengthens the broader goal of ensuring that groundwater remains a reliable resource for future generations across the country.