Abstract
Integration of remote sensing and Geographical Information System (GIS) are playing an important role for planning of water resource development and management. In drought prone western part of West Bengal, water resource is largely unexploited for agricultural development. Geologically the area consists of Chotanagpur granite gneiss complex (CGGC) along with Quarternery sediments while physiographically it is a part of dissected pedimental landscape with undulating lateritic and alluvial plain. The cultivation in this area mainly single rainfed crop and per hectare production is also low as compared to other regions of West Bengal. Keeping in view the above perspective, the present study was carried out to delineate ground water potential zones by using an integrated remote sensing and GIS techniques. Different thematic layers like drainage, slope, geology, hydrogeomorphological map, lineament density, land use/land cover (LULC) and hydrological soil group maps that influence the ground water occurrence in direct or indirect way, have been analysed and integrated to evaluate the hydrogeomorphological characteristics of the study area. Each thematic layer has been allotted weightage score calculated from multi-influencing factor (MIF) technique on the basis of relative contribution of ground water recharge and then integrated through Geographic Information System. Finally, a ground water potential map has been prepared and classified into five categories, like excellent, very good, good, moderate, and poor.
Key Words: Drought prone, Geology, GIS, Multi-influencing factor, Weightage score
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