Diz dick
Ogallala.
Ground water
its ground water
Aquifer
The name for a pipe in the ground used to remove water from an aquifer is called a well.
The zone where ground water is found is called the aquifer or it can be the ground water zone depending on what your thinking of.
aquifer
ground zone of saturation
Precipitation seeping through cracks and holes in the ground.
Infiltration the process of water percolating into the ground which eventually reaches the aquifer. Pollutants which dissolve into the water infiltrate with it and are introduced into the aquifer along with the water its stuff like paint that flows into the ground making it harmful to us.
They are called groundwater. Far as I know, there is no specific name separating ground water in shallow water table and the ground water in confined aquifer. So you might have to called by the full description "groundwater in confined aquifer layer". Aquifer is the specifics name for porous rock and earth media in the question.
The Missouri River is a major surface water resource for South Dakota. The Big Sioux Aquifer supplies ground water for eastern South Dakota while the Madison and Minnelusa aquifers supply ground water in the Black Hills.