IDENTIFICATION OF SUITABLE LOCATIONS FOR WATER HARVESTING STRUCTURES IN DODDABALLAPUR TALUK, BANGALORE, KARNATAKA USING GIS AND REMOTE SENSING

Abstract [English]

This study presents a GIS-based Multi-Criteria Evaluation (MCE) approach to identify suitable sites for rainwater harvesting structures in Doddaballapur Taluk, Bangalore Rural District, Karnataka. Using thematic layers—geology, geomorphology, soil, LULC, lineaments, and drainage—generated through ArcGIS 10.0 and LISS IV satellite imagery, site suitability zones were mapped. Each layer was assigned ranks and weights based on their influence on groundwater recharge. The integrated output was classified into Excellent, Good, Moderate, Poor, and Not Suitable zones. The most suitable zones were found near Adkepalya, Kilaranahalli, and Bandammanahalli, where structures like check dams, recharge pits, and contour bunds are recommended. The methodology provides a cost-effective, scientifically validated alternative to conventional site identification techniques.