Aquifer -

An aquifer is not an underground river or lake. It is a body of porous rock or sediment—such as gravel, sand, or fractured limestone—saturated with groundwater. Water moves slowly through these materials depending on their permeability. Major Types

These have a permeable layer of soil above them. The water table can rise or fall freely depending on rainfall and usage. aquifer

Major systems like the Ogallala Aquifer in the United States are facing rapid depletion due to agricultural demand. An aquifer is not an underground river or lake

Here is a comprehensive review of aquifers, covering their types, importance, and the critical challenges they face. 💧 What is an Aquifer? covering their types

They provide a massive portion of the global drinking water supply.