Identification of Groundwater Potential Zones in Korattalaiyar Watershed in Tamil Nadu, India Using Remote Sensing and Multi-Influencing Factor Techniques

Abstract

The aim and objectives of this study to determine the investigation of groundwater potential zones were carried out in the Korattalaiyar watershed in Tamil Nadu, India, based on remote sensing and geographic information system data. Different thematic layers such as geology, slope, soil texture, drainage density, lineament density, geomorphology, landuse/land cover and rainfall have been used to identify the excellent groundwater potential zone. ArcGIS version 10.3 software was used to prepare all the thematic layers and classified raster data sets. Each thematic layer's value was given a common scale, allowing all the thematic layers to be combined and a final output layer generated. Multi-Influencing Factor technique (MIF) was arrived based on score for each influencing factor. In this study area lineament density varied between around 26.24 and 278.78 km/sq.km. The northern and western halves of the study region have a higher lineament density. Groundwater potential zones in this region are compressed into four categories, such as very good, good, moderate, poor and very poor. In the research area, very good groundwater potential zones were observed in the centre and western of the section due to the existence of good porosity and permeability. The result displays the groundwater potential zones in the research region and has been shown to be useful in improving groundwater resource planning and management