Artesian-well definition

är-tēzhən
A well drilled through impermeable strata to reach water capable of rising to the surface by internal hydrostatic pressure.
noun
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A deep well that passes through impermeable rock or sediment and reaches water that is held under pressure in a confined aquifer. In aquifers of this type, the water in the lower regions is trapped between two layers of impermeable rock and cannot rise to the level of the water table in the upper, unconfined regions. When a well penetrates the confined region, the pressure forces the water to rise within the well until it reaches the elevation of the water table in the unconfined region (a level known as the potentiometric surface). &diamf3; In a flowing artesian well the water is under enough pressure to rise all the way to the surface without being pumped and must be capped to control the flow.
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An aquifer in which water rises to the surface under its own hydrostatic pressure.
noun
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A bore-hole in an artesian basin.
noun
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A well drilled deep enough to reach water that is draining down from higher surrounding ground above the well so that the pressure will force a flow of water upward.
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Other Word Forms

Noun

Singular:
artesian-well
Plural:
artesian-wells

Origin of artesian-well

  • French artésien from Old French artesien of Artois from Arteis , Artois, France

    From American Heritage Dictionary of the English Language, 5th Edition