Delineation of groundwater potential zone in hard rock terrain in Gangajalghati block, Bankura district, India using remote sensing and GIS techniques

摘要: This study employed with the integration of remote sensing (RS) and geographical information system (GIS) techniques to delineate ground water potential zones for management Gangajalghati block, Bankura district, West Bengal is located on eastern slope Chotanagpur plateau area belongs predominantly Precambrian gneissic terrain, small Gondwana deposits quaternary sediments. The groundwater in this region confined within weathered residuum fracture pediment region. Survey India topographical maps satellite imageries along other data field observation have been utilized prepare various thematic layers viz. drainage, slope, lineament, geology, hydrogeomorphic units, land-use/land cover, soil, depth level map hard rock terrain. All that influence occurrences analyzed integrated through GIS analysis based weights assignment. weighted index overlay method has followed zones. result revealed can be categorized into four different viz., very good, moderate, poor bore well yield reveals medium yielding wells (50–100 L per min) are around moderate high lineament density zone buried Afterward validation a good correlation respect observed zonation. useful better planning resources as providing quick prospective guides exploration aquifer system.