SPATIO-TEMPORAL ASSESSMENT AND MAPPING OF GROUNDWATER QUALITY IN MYSURU TALUK, KARNATAKA, INDIA USING GEO-INFORMATICS TECHNIQUE

ABSTRACT Assessing the groundwater quality of a region will be a great importance in the field of environmental and socio-economic management. Seasonal variations (Pre & Post monsoon during 2014) in groundwater quality are analyzed from 9 observation well points and the exact locations are recorded using GPS and groundwater quality theme maps are digitized using GIS software’s. All the samples are analyzed with respect to Bureau of India Standards (BIS) and World Health Organization (WHO). Lineaments are overlaid on land use/ land cover patterns using IRS-1D, PAN+LISSIII satellite image through GIS software’s to evaluate the possible threats/ locations of groundwater quality such as rock-water interactions, agro-chemicals and storage & movement of water. Ordinary kriging method is utilized in preparation of thematic maps of each parameter which provide better understanding of the present water quality scenario in the study area. The final results highlight the seasonal variation in groundwater quality and its mapping of the study area using hi-tech tools of geoinformatics technique.