SPATIAL DATA INTEGRATION AND MAPPING OF GROUNDWATER POTENTIAL ZONES ON PRECAMBRIAN TERRAIN OF HASSAN DISTRICT, KARNATAKA, INDIA USING GEOMATICS APPLICATION

Water is the main source of human’s daily life and being used in various fields. Mapping and integration of lithology, drainage, lineament, soil , slope and other related features are useful in assessing the groundwater resources of a larger are a. Thematic maps have prepared through Visual Image Interpretation Techniques (VIIT) and integrated by using GIS software’s. The present aim is to apply the Geomatics tools to demark the groundwater potential zones of the study area. Efforts have been made to evaluate the groundwater potential zones by assessing the weightage for different thematic layers based on collateral data and digitization. Various litho units such as granites, gneisses, schists and quartzites are encountered during field survey. Soil and lineament form the basic geological structures which are easily identifiable in the Landsat-7 satellite imagery and helps in understanding the nature of lithology in delineation of groundwater prospect zones. Slope map is prepared by using Survey of India (SoI) toposheets of 1:50,000 scale. The final result highlights the favorable conditions of groundwater potential zones in Precambrian terrain of the study area which is a suitable model in similar geological conditions.