Geospatial Insights for Groundwater Augmentation for Temple Town of Nanjangud Taluk, Karnataka, India
摘要
Long-term groundwater depletion is a global issue recorded worldwide due to rapid industrialization, urbanization, deforestation, immense agricultural activities, demographic rise, automobile services, and over-exploitation of groundwater. Artificial Recharge Structures (ARS) on local scales can effectively contribute to improving the groundwater levels that fulfill the daily demands of agricultural, industrial, domestic, and other usages. The present study strengthens the rise in groundwater levels by modifying surface runoff and artificial storage techniques in the temple town of Nanjangud taluk using a GIS platform. Toposheets, LISS-III, and DEM data are successfully adopted to generate the required thematic layers in ArcGIS v10. Priority-based weights are assigned for each factor considered using the Analytical Hierarchical Process (AHP) in deriving suitable sites for ARS. The integrated map was categorized into 5 zones (1–5), with 1 denoting the most suitability and 5 denoting the least suitability for ARS. This method assisted in extracting 80 possible locations for artificial recharges. The final outcomes portray a better perspective for periodic monitoring and planning strategies for achieving groundwater sustainability.