Correlation Of Electrical And Hydraulic Conductivities Of Porous Aquifer – A Critique

This paper recollects the most important existing<br>equations derived for electrical and hydraulic effects<br>by considering simple aquifer models – non-shaly<br>and shaly sands. A critique about the possible<br>correlation between electrical and hydraulic<br>conductivity is presented, vis-à-vis estimation of the<br>later from the former with a requisite confidence.<br>Only the relations developed mathematically are<br>chosen for discussion and empirical relations are left<br>out. A more plausible general aquifer model based<br>equations are presented to show that the relationship<br>is direct only in electrolyte (conductance) dominated<br>aquifer case and inverse in matrix (resistance)<br>dominated aquifer. Few data points published already<br>are analyzed to show the efficacy of the equations.