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The present research is based on both qualitative and quantitative analysis of ground water of a western state Kalahandi of Odisha, India. 15 physio chemical parameters in addition to ground water depth data has been collected from CGWB, Bhubaneswar, Odisha for all 13 blocks of the district. The main objective of this study is to derive significant relationships between the groundwater parameters and to understand the factors controlling these parameters. Plots of linear regression reveals strong co relationship between magnesium, bicarbonate ions with total alkalinity. Magnesium, chloride and bicarbonate ions are significantly controlling the electrical conductivity of the groundwater. An important implication derived from the time series plot that the pattern of most of the physiochemical and quantitative parameters cannot be assumed linear. Therefore, reliance on formal regression cannot be undertaken for trend analysis. Mann-Kendall test as a non-parametric method of trend testing is taken. Based on S statistics, parameters such as hardness and magnesium show increasing trend whereas pH, sodium and potassium show a significant decreasing trend. Groundwater depth shows surprising results of significantly increasing trend being the S value as high as 103, which leads to ample scope of utilization and reliance on groundwater of the district.

Statistical and Time series Analysis of Ground Water Parameters of Kalahandi District, Odisha, India