Identification Of Groundwater Prospective Zones Of Varuna Watershed Using Weighted Overlay Method

IJEP 41(7): 772-779 : Vol. 41 Issue. 7 (July 2021)

Vikram Kumar1*, Kailash Narayan2, Manvendra Singh Chauhan3, Prabhat K. S. Dikshit4 and Shyam B. Dwivedi4

1. Gaya College of Engineering, Department of Civil Engineering, Gaya, Bihar, India
2. Delhi Technical Campus, Department of Civil Engineering, Greater Noida, India
3. Holy Mary Institute of Technology and Science, Department of Civil Engineering, Hyderabad, India
4. Indian Institute of Technology (BHU), Department of Civil Engineering, Varanasi – 221 005, U.P., India


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, land use 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.


Varuna watershed, GIS, Potential groundwater zones


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