摘要：Semi-arid region of Bhaskar Rao Kunta watershed was studied to evaluate hydrogeochemical characteristicsof the fractured, semi-confined and water-stressed aquifers. Twenty groundwater samples were collectedfrom deeper bore wells during pre and post monsoon seasons in June and December 2009. The sampleswere analysed for concentration of physico-chemical parameters (pH, EC, TDS, TH, Ca 2+ , Mg 2+ , Na + , K + ,HCO 3 - , SO 4 2- , Cl - , NO 3 - and F - ). The results were interpreted with Piper, Gibbs and Wilcox diagrams. Forinterrelationships, the parameters were measured with correlation matrix and t-test methods. Bureau ofIndian Standards specifications were used and verified for suitability of groundwater quality. The type of thegroundwater quality was understood from the interpreted diagrams of Piper (85% magnesium bicarbonateand 15% mixed type of samples), Gibbs (100% evaporation type samples) and Wilcox (85% high salinityand 15% moderate salinity type of samples). The highest correlation was found between EC and TDS witha correlation coefficient of 0.98 and the t-test behaviour was not significance, therefore, the geogenic androck water interaction was negligible with respect to seasonal variation. Due to high concentration of fluoride(<1.5mg/L) and salinity (750 ≤ 2250 µS/cm), the groundwater quality was not suitable for drinking, andspecial drainage system and crop practices are requisite for irrigation purpose in the study area.
