A GIS based DRASTIC model for assessing groundwater vulnerability of Katri Watershed, Dhanbad, India

• DOI: 10.1007/s40808-015-0009-2
• Publication Date: 2015-07-03T22:20:25Z
• Authors: Amit Ghosh; Ashwani Kumar Tiwari; Santosh Das
• Keywords: Vulnerability index; Vulnerability

Groundwater vulnerability assessment could be defined as the degree of assimilation capacity area to contaminant from surrounding surface above aquifer. It has become an important element for sustainable natural resource management and proper landuse planning. This study aims at estimating shallow aquifer by applying GIS based DRASTIC model in Katri watershed, Dhanbad, Jharkhand. The probable groundwater quality decline due various anthropogenic activities within watershed necessitated this using a combination method effective pollution risk assessment. is on seven hydrogeological data layers that provide input modelling. corresponds initials i.e. Depth water, net Recharge, Aquifer media, Soil Topography, Impact vadose zone hydraulic Conductivity. mapping index allows us delineate zones with degrees vulnerability. reveals about 16.91 % exposed high-risk, 30.69 medium-risk, 52.4 low risk. south eastern western parts are dominated high classes while south, north lower middle portions characterized moderate classes. elevated northern, eastern, part displayed