Groundwater Potential Zonation Using Remote Sensing and GIS Techniques in the Chandrabhaga Watershed, Maharashtra, India
摘要
Groundwater is essential for biological systems and human activity, yet its effective evaluation and management remain challenging, especially in regions like India’s Deccan volcanic province. This study aims to assess groundwater potential zonation (GWP) mapping in the Chandrabhaga watershed using remote sensing and geographical information systems. The research integrates geological, geomorphological, soil, slope, drainage, elevation, and land use and land cover to identify groundwater potential zones. The study area, encompassing 512.903 sq. Km2 in the Godavari Basin is characterized by diverse geomorphic features, including denudational and structural hills, pediplains, flood plains, and alluvial plains. Methods involved creating thematic layers from LANDSAT-8 satellite imagery and ASTER-GDEM datasets, validated through fieldwork and Geological Survey of India maps. These layers were evaluated and integrated using weighted overlay analysis to delineate groundwater potential zones. Results indicate that the majority of the watershed has moderate groundwater potential (GWP 2.0–3.0, and 66.32% of the total area), with good potential zones (GWP 3.0–4.5, 25.73% of the total area) and very good zones (GWP > 4.5, 0.80% of the total area) requiring careful management to avoid overexploitation. Poor potential zones (GWP < 2.0, 7.15% of the total area) highlight areas needing alternative water management strategies. The findings underscore the importance of a multi-criteria approach to groundwater management in the Chandrabhaga watershed. Future work focuses on improving groundwater conservation, integrating specific hydrological data, and improving assessments to support sustainable water management for meeting the region’s rising water demands amidst urbanization and agricultural intensification.