In some areas, groundwater can move rapidly, such as through gravel and sandy deposits, and can accumulate to form an aquifer. In an aquifer, there is enough groundwater that it can be pumped to the surface and used for drinking water, irrigation, industry, or other uses. Where do aquifers get their water from?

Question

a.precipitation that filters through the unsaturated zone
b.evapotranspiration that saturates the soil zone
c.water from the saturation zone moving upward into the unsaturated zone
d.rain and snow that wets the ground surface

Answer 1

Aquifers primarily get their water from:

a. precipitation that filters through the unsaturated zone

This process, known as recharge, occurs when rain or snowmelt infiltrates the ground, passes through the unsaturated zone, and eventually reaches the saturated zone where it accumulates in the aquifer.