What is Ground Water ?

Ground Water is water held underground in the soil or in pores and in crevices in rock.

Porosity vs. Premeability

How this affects ground water .... Soil refers to the top few feet of the land surface. The soil acts as a natural filter to screen out many substances that mix with the water. But water will transport some contaminants into the ground water.
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What are some type of Aquifers?

Unconfined aquifers are those into which water seeps from the ground surface directly above the aquifer.

Confined aquifers are those in which an impermeable dirt/rock layer exists that prevents water from seeping into the aquifer from the ground surface located directly above.

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What kind of effects can depleting our groundwater supply cause?

Groundwater depletion is primarily caused by sustained groundwater pumping. Some of the negative effects of groundwater depletion:

  • Increased Costs

    As the water table lowers, the water must be pumped farther to reach the surface, using more energy. In extreme cases, using such a well can be cost prohibitive.

  • Reduced Surface Water Supplies

    Groundwater and surface water are connected. When groundwater is overused, the lakes, streams, and rivers connected to groundwater can also have their supply diminished.

  • Land Subsidence

    Land subsidence occurs when there is a loss of support below ground. This is most often caused by human activities, mainly from the overuse of groundwater, when the soil collapses, compacts, and drops.

  • Water Quality Concerns

    Excessive pumping in coastal areas can cause saltwater to move inland and upward, resulting in saltwater contamination of the water supply.

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