by: michael wallace
what is groundwater
ground water is water held underground in the soil or in pores and crevices in rocks.
porosity vs permeability
porosity is the quality of being porous and permeability is an quantity measuring the influence of a substance on the magnetic flux in the region it occupies.
zone of aeriation - is the zone between the land surface and the water table in which the pore spaces between soil and rock particles contain water, air, and other gases
zone of saturation -