Evaluation Of Groundwater Quality Using Remote Sensing And Gis: A Case Study

Abstract

One of the main issues facing the world today is water quality, which primarily affects poor nations. One of the essential ingredients for the survival of life in any form is water. Nearly 70% of the surface of the earth is covered by water. Since it is directly related to daily life activity, maintaining water quality is crucial. Color, EC, pH, BOD, COD, TDS, iron, nitrates, and other parameters were examined from a physiochemical and biological perspective.  The groundwater in the Kolar district is suitable for household and agricultural use. Groundwater's pH ranges from 7 to 8.67, indicating that it has an alkaline pH by nature. The specific conductance values are mostly within at 2000 us/cm 25 °C, us/cm. more than 1.5 mg/l of fluoride is present. However, fluoride concentrations of 2 mg/l and more have also been found in some of the exploratory borewells. It has been reported that nitrate concentrations exceed 100 ppm. In the study region, this has led to numerous health complications.  It is possible to determine the quality of water using GIS and remote sensing technology. Thematic maps with characteristics indicating the water quality were produced using the ArcGIS software. GIS maps can be used to evaluate changes in groundwater quality over time and space. Understanding water quality and creating appropriate management strategies to safeguard groundwater resources are both aided by the study.