Petrophysical data is typically used in laboratory and field scales to characterize and determine parameters that impact fluid flow and transport and migration through interstitial pores of subsurface materials among other uses. In this panel, we will focus the discussion on hydrologic challenges that can be addressed through the employment of near-surface geophysical methods to determine the petrophysics under certain situations and the ramifications of the petrophysics on the site/laboratory characterization.