ABSTRACT
This chapter explores the definitions, physical foundations, and feasible validity ranges of basic parameters in light of geological, hydrological, and practical field discussions. Quantitative evaluation of groundwater potential is possible only after a set of basic parameters is properly defined and physically related to some aquifer properties. The grain size composition of any porous medium has a major effect on its regional properties. The ability of an aquifer to store water is one of the most important hydraulic properties. Groundwater at rest is under the influence of gravity and hydrostatic pressure. In classical leaky aquifers hydraulic resistance is a measure of the resistance of an aquitard to vertical flow movement. Any groundwater reservoir shows resistance to the movement of water resulting in a retarding effect. An aquifer is uniform if the saturation depth is the same along any cross section in which a groundwater phenomenon takes place.
