Groundwater Earth Science Fresh Water Groundwater Questions How does water enter groundwater reservoirs? What is an aquifer? How can overdrafting from aquifers affect the environment? What happens when a the wates table drop when below the depth of well? What feature results from the chemical dissolution of carbonate rocks by groundwater? What is the top of the saturation zone in the ground called? Fresh Water View all chapters Water on Earth Surface Water Groundwater Prev