EARTH SCIENCE
GROUNDWATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Austin is too close to the coast
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Water should be recycled
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Austin is in a drought
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Liquid waste could directly enter the aquifer the city uses
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Detailed explanation-1: -Unconfined aquifers are recharged primarily from precipitation percolating, or infiltrating, down from ground surface. Confined aquifers are generally recharged where the aquifer materials are exposed at the surface (outcrop).
Detailed explanation-2: -zone of saturation, saturated zone) is the area in an aquifer, below the water table, in which all pores, fractures, and cavities (including karst caves) are filled with water.
Detailed explanation-3: -Artificial recharge can be done through injection of water through wells. This method often is applied to recharge deep aquifers where application of water to the land surface are not effective at recharging these aquifers.
Detailed explanation-4: -Excessive groundwater pumping can overdraft aquifers, emptying them faster than natural systems can replenish them. Overdraft can result in wells going dry, saltwater intrusion, depletion of surface water supplies, and cause the land to collapse (i.e., subsidence).