Ground Water

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Ground Water

• Revised 12/16/09

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Porosity

• The amount of space between grains of a substance.

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Permeability

• The ability of a substance to allow fluids to
  pass through it.

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Zone of Aeration

• The area in the ground or rock in which the pore
  space is filled with air.

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Zone of Saturation

• The area in the ground in which all pore spaces
  are filled with water.

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Water Table

• The upper surface of the zone of saturation.

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Aquifer

• A layer of permeable rock that transmits water
  freely

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Spring A flow of water from the ground where
the land surface dips below the water table.
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Well

• A hole or pipe drilled or dug into the ground
  below the water table which allows water to be
  pumped out.

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