The present paper describes a mathematical statistical method suitable for hydrogeophysical work which, bases on electrical parameters of electrical sounding data,uses unary linear correlation to evaluate buried depth of ground-water, percentage of clay soil and thickness of water-bearing layer, and uses binary linear correlation to forecast such hydrogeological parameters as water-gushing amounts.The different levels of correlation existent between various parameters in the regression equation cannot be regarded either as a fortuitous coincidence or as the universally applicable regularity. The factors affecting various parameters are pretty complicated. Generally speaking, the correlations of various parameters are relatively obvious in such hydrogeological units as intermon-tane basin, piedmont fan and lacustrine or alluvial plain.Facts show that the mathematical statistical method is applicable to the qualitative-quantitative interpretation of the D. C. electrical sounding data and that this method may yield fairly satisfactory geological results in those hydrogeological units which meet the requirements of correlation analysis.