IJEP 43(10): 877-888 : Vol. 43 Issue. 10 (October 2023)
Riyaz, Swanand A. Ajgaonkar and Manjunatha S.*
Karnatak University, Department of Geology, Karnatak Science College, Dharwad – 580 001, Karnataka, India
Abstract
In the present investigation, emphasis has been given to evaluating the physico-chemical characters and seasonal variations in the groundwater of Raichur taluk. Overall 59 groundwater samples were collected each during pre-monsoon and post-monsoon covering whole Raichur taluk and parameters, such as pH, EC, TDS, TH, Ca2+, Mg2+, Na+, K+, CO32-, HCO3–, Cl– and SO42- were analyzed to decipher its geochemical characters and seasonal variation in space and time. From the study, it was observed that ionic concentration for both seasons was in the following order: Na+>Ca2+>Mg2+>K+=HCO3–>Cl–>SO42->CO32-. Hydrochemical facies of the groundwater are of CaCl type while Gibbs plot inferred rock-water interaction. The spatial variation revealed EC and TDS were in higher concentrations in the western part of the study area. The changes in the seasonal values indicate that the geochemical characters of groundwater of Raichur taluk are influenced by lithology and seasonal variations.
Keywords
Geochemical, Seasonal variation, Groundwater, Raichur, Karnataka
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