Darcy's Law directly calculates the discharge velocity. To get the actual average groundwater velocity (seepage velocity), what specific aquifer property is essential to account for?

To get the actual average groundwater velocity, also known as seepage velocity, from the discharge velocity calculated by Darcy's Law, the essential aquifer property to account for is porosity. Darcy's Law calculates discharge velocity, which represents the volume of water flowing per unit time through a unit total cross-sectional area of the aquifer, including both solid grains and void ....