What is the name for an underground layer of rock that is saturated with groundwater?
artesian well
gradient
aqueous cavity
aquifer
An underground layer of rock that is saturated with groundwater is called an aquifer . A diagram of an aquifer is pictured below ( Figure below ). Aquifers are generally found in porous rock, such as sandstone. Water infiltrates the aquifer from the surface. The water that enters the aquifer is called recharge .