GIS for groundwater management means using geographic information system technology to map aquifer extent, monitor water table trends, identify zones with the highest groundwater recharge potential, pinpoint contamination hotspots, and plan the placement of artificial recharge structures.
This is all carried out within a spatially indexed, multi-layer analytical environment that connects hydrogeological data to the communities and policymakers who need to act on it.
India’s Groundwater Crisis at a Glance
India withdraws more groundwater than any other country on earth, accounting for approximately 25% of global groundwater extraction. As per the 2025 dynamic assessment by the Central Ground Water Board (CGWB) and state governments, India’s total annual groundwater extraction stands at 247.22 Billion Cubic Meters (BCM) against an annually extractable resource of 407.75 BCM, giving an overall stage of extraction of 60.63%.
The spatial picture is far more alarming than the national average suggests. Out of 6,762 assessment units across India, 730 blocks, taluks, and mandals, representing 10.8% of all assessment units, are categorized as overexploited, meaning extraction exceeds the annually replenishable groundwater resource. These are not evenly distributed. Punjab, Haryana, Rajasthan, and parts of Karnataka and Tamil Nadu host the densest clusters of overexploited and critical blocks.
The encouraging news is that consistent intervention is working. Since 2017, the percentage of overexploited units has declined from 17.2% to 10.8%, and the percentage of safe units has increased from 62.6% to 73.14%.
Annual recharge has grown by 15 BCM and extraction has fallen by 3 BCM over the same period. Every one of these gains depends on knowing precisely where the stress is, where the recharge potential exists, and where intervention will deliver the greatest impact. That knowledge comes from GIS.
What Is GIS for Groundwater Management?
GIS for groundwater management is the integration of spatial data on geology, geomorphology, terrain, soil type, land use, drainage networks, vegetation, and monitored water levels into a single analytical platform. This enables planners and hydrogeologists to understand aquifer behaviour, identify where depletion is occurring, and locate where recharge can be augmented most effectively.
It transforms groundwater management from a discipline based on point measurements at monitoring wells into a spatially continuous, evidence-based planning system where every decision, from where to build a check dam to which blocks need regulated extraction, is grounded in mapped, verifiable spatial data.
Why India Needs Spatial Intelligence on Aquifers
India’s groundwater system is not uniform. The country sits over 14 principal aquifer systems and 42 major aquifers, ranging from the vast alluvial plains of the Indo-Gangetic basin to hard rock aquifers in the Deccan plateau, basaltic formations in Maharashtra, and coastal sedimentary aquifers in Gujarat, Andhra Pradesh, and Tamil Nadu. Each aquifer type has different hydraulic properties, different recharge characteristics, and different vulnerability to overextraction and contamination.
Managing this diversity without spatial data is impossible. A regulation that works for the deep alluvial aquifer in western Uttar Pradesh is irrelevant for the fractured granite aquifer in interior Tamil Nadu. GIS is the platform that makes aquifer-specific management actionable at the scale India’s groundwater crisis demands.
How GIS Maps Aquifer Depletion
Aquifer depletion mapping in GIS combines two streams of spatial data: static structural data that characterizes the aquifer, and dynamic monitoring data that tracks how water levels change over time.
ArcGIS Pro integrates geological maps, lithological borehole logs, geophysical survey data, and CGWB’s NAQUIM aquifer characterization outputs into a 3D hydrogeological model that defines aquifer geometry, thickness, and hydraulic properties across a study area. This structural layer tells planners where groundwater exists and how it moves.
ArcGIS Spatial Analyst then processes seasonal and annual water level data from CGWB’s Digital Water Level Recorder (DWLR) network, interpolating point measurements across the landscape to generate continuous water table maps. By comparing pre-monsoon and post-monsoon water level surfaces across multiple years, hydrogeologists can quantify the rate of water table decline in any spatial unit, from individual blocks to entire river basins.
ArcGIS Velocity connects CGWB’s growing IoT-enabled monitoring network to a real-time analytical dashboard, flagging blocks where water level decline accelerates beyond seasonal norms. This shift from periodic assessments, conducted annually by CGWB, to continuous spatial monitoring is one of the most important transitions in India’s groundwater management capability.
How GIS Identifies Groundwater Recharge Zones
Groundwater potential zone mapping is the systematic use of GIS multi-criteria analysis to identify areas where surface water can infiltrate and replenish an aquifer most effectively. It is the spatial foundation for every artificial recharge planning exercise.
A peer-reviewed study conducted by CGWB researchers on the Amaravathi aquifer system in Tamil Nadu demonstrates the workflow precisely. Using GIS overlay analysis across eight thematic layers, namely geology, geomorphology, slope, soil, land use, post-monsoon water level, weathering depth, and waterbodies and drainage, the study delineated four recharge potential zones: very high, high, moderate, and very poor. Approximately 45% of the study area fell within the high to very high feasibility zone.
Based on this spatial analysis, the study calculated specific recharge infrastructure requirements: 166 masonry check dams, 155 nala bunds, 575 recharge shafts within existing tanks, and 716 percolation ponds for repair, renovation, and restoration. Implementing these structures would generate an estimated additional 198 million cubic meters of annual groundwater recharge in the aquifer system.
In ArcGIS Pro and ArcGIS Spatial Analyst, this workflow uses weighted overlay analysis and multi-criteria decision analysis (MCDA) to score and combine the thematic layers into a composite recharge potential map. The thematic inputs come from multiple sources: Indo ArcGIS Living Atlas provides ready-to-use Digital Elevation Models, NDVI vegetation indices, and Land Use Land Cover grids for India. Satellite-derived geology and geomorphology maps from NRSC and ISRO’s Bhuvan platform add the hydrogeological layers. CGWB’s monitoring well network supplies the post-monsoon water level observations.
The criteria evaluated for recharge zone identification include:
- Geology: Fractured and weathered formations with high secondary porosity have strong recharge potential; massive crystalline basement does not
- Geomorphology: Pediplains and valley fills recharge readily; denudational hills and rocky outcrops do not
- Slope: Low slopes allow water to pond and infiltrate; steep slopes generate runoff
- Soil type: Sandy and loamy soils transmit water quickly; clay-dominated soils retard infiltration
- Land use/land cover (LULC): Agricultural and fallow land with low imperviousness recharge more than built-up or paved surfaces
- Lineament density: Structural fractures and fault zones act as conduits for deep recharge in hard rock areas
- Drainage density: Low drainage density typically indicates higher infiltration; high density suggests surface runoff dominance
- Post-monsoon water level: Zones with shallower post-monsoon water tables respond better to recharge augmentation
NAQUIM and India’s National Aquifer Mapping Programme
India’s National Aquifer Mapping and Management Programme (NAQUIM), launched by CGWB in 2012, is one of the largest aquifer mapping exercises undertaken by any country in the world. NAQUIM Phase 1 has now completed mapping of the entire mappable area of India, approximately 25 lakh square kilometers. District-wise aquifer maps and groundwater management plans covering all 14 principal aquifers and 42 major aquifers have been shared with 654 district administrations across the country.
NAQUIM outputs cover both supply-side and demand-side management measures. On the supply side, they identify artificial recharge sites and priority intervention zones. On the demand side, they quantify sustainable extraction limits by aquifer unit and block. NAQUIM has directly supported drinking water source finding, artificial recharge site selection, delineation of alternative aquifers in arsenic- and fluoride-affected areas, and implementation of Atal Bhujal Yojana’s community-based water security plans.
CGWB has now launched NAQUIM 2.0, focusing on water-stressed and quality-affected areas with higher data granularity down to the panchayat level. Priority areas for NAQUIM 2.0 include coastal zones, urban agglomerates, springshed areas, industrial and mining-affected zones, and areas with deep-seated and auto-flow aquifer systems. As of late 2025, approximately 68 studies and reports have been completed under NAQUIM 2.0. The explicit ambition of NAQUIM 2.0 is to deploy state-of-the-art technologies, including GIS-based analysis and real-time data integration, to generate granular, panchayat-level groundwater intelligence for management decisions.
How States, ULBs, and Communities Use GIS Outputs
Atal Bhujal Yojana (Atal Jal) is India’s flagship participatory groundwater management programme, operating across 80 districts in 7 states: Gujarat, Haryana, Karnataka, Madhya Pradesh, Maharashtra, Rajasthan, and Uttar Pradesh. The programme targets water-stressed gram panchayats and requires each participating panchayat to develop a Water Security Plan grounded in local aquifer data.
ArcGIS Hub provides the open-data and community engagement layer that makes NAQUIM outputs accessible to state water departments, district collectors, and block-level water committees rather than remaining locked in technical reports. Dashboards built on ArcGIS Enterprise display aquifer conditions, water table trends, and recharge structure locations at block and panchayat level, enabling gram panchayat water committees to see exactly how their local aquifer is responding to extraction and recharge interventions.
Jal Jeevan Mission’s source sustainability requirement directly depends on GIS-driven groundwater intelligence. For every household tap connection in rural India, the mission requires that the underlying water source is sustainable through all seasons and years. Where source sustainability is under threat from aquifer depletion, NAQUIM-informed recharge zone maps identify where MGNREGA labour can be deployed to construct check dams, nala bunds, and percolation tanks that restore aquifer balance.
ArcGIS Survey123 and ArcGIS Field Maps enable state groundwater department staff and ASHA-equivalent water monitors to capture well-level water depth observations, recharge structure condition data, and new encroachment points directly from the field with GPS-tagged precision, feeding the continuous monitoring network that NAQUIM 2.0 requires.
Contamination Mapping: Quality Alongside Quantity
GIS for groundwater management must address quality alongside quantity. India’s Annual Groundwater Quality Report 2025 maps state-wise distribution of arsenic, fluoride, nitrate, uranium, and heavy metal contamination across aquifers.
Arsenic affects shallow alluvial aquifers in West Bengal, Bihar, Jharkhand, and parts of Uttar Pradesh, threatening millions of rural households dependent on shallow hand pumps. Fluoride contamination is severe in Rajasthan, Andhra Pradesh, Karnataka, and Gujarat. Uranium has been detected in groundwater in Punjab at concentrations exceeding WHO guidelines. Nitrate contamination, primarily from agricultural runoff, is widespread across Haryana, Rajasthan, and parts of Maharashtra.
ArcGIS Spatial Analyst overlays these contamination layers with population density, source water dependence maps, and Jal Jeevan Mission tap connection data to identify which communities face compound risk, meaning both depleting quantities and deteriorating quality, and need priority intervention through alternative source development or treatment infrastructure.
Challenges and the Road Ahead
Data continuity and DWLR coverage
CGWB’s Digital Water Level Recorder network provides near-continuous water level data from thousands of monitoring wells, but coverage remains uneven. Many overexploited blocks have fewer monitoring points than their stress level demands. Expanding DWLR coverage and integrating IoT-based continuous sensors with ArcGIS Velocity will shift groundwater monitoring from annual snapshots to real-time situational awareness.
State capacity for spatial analysis
NAQUIM 2.0 produces granular aquifer intelligence, but most state groundwater departments lack the in-house GIS expertise to translate it into operational management plans. Building GIS capacity within state water departments and district administrations is as critical as the mapping programme itself.
Connecting NAQUIM to regulation
CGWB’s National Groundwater Management Improvement Programme aims to link NAQUIM outputs directly to groundwater extraction regulation at the block level. Where GIS analysis confirms overexploitation, regulatory action must follow. The spatial evidence exists; what remains is the institutional mechanism to act on it at scale.
Urban groundwater integration
India’s cities extract enormous volumes of groundwater outside any regulatory framework. Integrating urban aquifer data from NAQUIM 2.0’s urban agglomerate studies into city master plans, using ArcGIS Enterprise spatial layers shared with ULBs through ArcGIS Hub, is an emerging governance priority that few Indian cities have yet addressed systematically. Explore Esri India’s Water Resources and Natural Resources solutions for groundwater planning and management across India.
FAQs
1.What is groundwater management using GIS?
Groundwater management using GIS maps aquifer systems, monitors water level changes, identifies recharge zones, and locates contamination hotspots at precise spatial locations. It integrates geology, soil, land use, and monitoring well data to help planners make evidence-based decisions about sustainable groundwater use.
2.How does GIS help identify groundwater recharge zones?
GIS combines geology, geomorphology, slope, soil, and land use layers into a weighted overlay model in ArcGIS Spatial Analyst, scoring each layer using AHP to produce a recharge potential map. This identifies precisely where structures like check dams, percolation tanks, and recharge shafts will deliver the greatest aquifer benefit.
3.What is India’s National Aquifer Mapping Programme (NAQUIM)?
Launched by CGWB in 2012, NAQUIM has mapped approximately 25 lakh square kilometers covering 14 principal aquifer systems, with district-wise management plans shared with 654 district administrations. NAQUIM 2.0 is deepening analysis to panchayat level in water-stressed, coastal, and contamination-affected areas.
4.Which Indian states face the worst groundwater depletion?
Punjab, Haryana, and Rajasthan host the densest concentration of overexploited blocks, driven by groundwater-intensive paddy and wheat cultivation, while parts of Karnataka, Tamil Nadu, and Andhra Pradesh face hard rock aquifer depletion. The share of overexploited units has improved from 17.2% in 2017 to 10.8% in 2025.
5. How can GIS support artificial recharge planning?
GIS produces recharge zone maps identifying precise locations and structure types needed to restore aquifer balance. A CGWB study of the Amaravathi aquifer in Tamil Nadu used GIS overlay analysis to identify requirements for 166 check dams, 575 recharge shafts, and 716 percolation ponds, projecting 198 million cubic meters of additional annual recharge.
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Esri India Marketing
