Identification Of G round water Prospective Zones Of Varuna Watershed Using Weighted Overlay Method

Abstract

In this work, potential groundwater zones of the Varuna watershed have been identified using the weighted index overlay method. To apply this method, various thematic layers, soil, drainage, slope, landuse / land cover and topographic layers have been considered. The comparative weight has been assigned to individual thematic layers and further rank assigned to every category of thematic layers. The overlying of layers has been done in ArcGIS to produce a potential groundwater zones map. Potential groundwater zones (PGZs) of the Varuna watershed have been categorized into three categories: good, moderate and low. Results show that the maximum part of the study area has a moderate groundwater zone. The criterion to categorize PGZs is based on the depth of the groundwater table from the ground surface. This study shows that remote sensing and GIS are the most useful tools to explore the groundwater potential zones and opened new paths to take care of the water resources. © 2021 - Kalpana Corporation.