Delineation of Groundwater Potential Aquifers with help of Remote Sensing and Geophysical Methods in Chandur Mandal of Nalgonda District, Telangana State, India
Author(s):
Naga Phaninder Pagadoju, Sairam Tadivalasa, Dr.G Prabhakar
Keywords:
Vertical Electrical Soundings (VES), Electrical Resistivity Tomography (ERT) Electrical resistivity longitudinal conductance, Groundwater potential aquifers, Telangana and India
Abstract
Remote sensing, Geophysical and Geological surveys were conducted to delineate groundwater potential aquifers in Chandur Mandal, which is a part of Kangal river catchment area about 200.81 km2 in Nalgonda District, Telangana, India. The main litho units in the study area are Granites, Gneisses and Migmatites with intruded Dolerite Dykes. The Sentinal2A Satellite data acquired, processed and interpreted for ground water potential zones in the study area, based on result of remote sensing data, Forty-four Vertical Electrical Soundings (VES) and eight Electrical Resistivity Tomography (ERT) were conducted in Werner and Schlumberger configuration in field. The field data were interpreted with the help of master curves and auxiliary point charts and topography interpretation. The VES and ERI data were used to generate a top layer apparent resistivity contour map, pseudo sections and VES curve map. Resistivity contour maps were prepared and interpreted in terms of resistivity and thickness of various sub-surface layers. Resistivity contour diagrams depicting the depth to bedrock were prepared. Resistivity results were correlated with the existing lithology. Based on the depth to bedrock, the thickness of the layer and resistivity of the layer, groundwater potential map has been prepared, in which good, moderate, and poor zones are classified. The study reveals that the weathered and fractured portions in Granites and dolerite dykes that occur in the southern and central portions of the area constitute the productive water-bearing zones categorized as good groundwater potential aquifers
Article Details
Unique Paper ID: 164812

Publication Volume & Issue: Volume 10, Issue 12

Page(s): 2187 - 2202
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