perched water table

   Unconfined ground water separated from an underlying body of ground water by unsaturated soil or rock. It may be either temporary or permanent.

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

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  • perched water table — noun : the upper surface of a body of perched groundwater …   Useful english dictionary

  • Water table — The water table is the level at which the ground water pressure is equal to atmospheric pressure. It may be conveniently visualized as the surface of the ground water in a given vicinity. It usually coincides with the phreatic surface , but can… …   Wikipedia

  • ground water, perched —    Unconfined ground water separated from an underlying body of ground water by an unsaturated zone. Its water table is a perched water table. Perched ground water is held up by a perching bed whose permeability is so low that water percolating… …   Lexicon of Cave and Karst Terminology

  • spring, perched karst —    The emergence of underground water some where above the basement of a calcareous massif caused by the interbedding of an impermeable or intermittent perched water table by restricting the vertical movement of water, which instead issues from… …   Lexicon of Cave and Karst Terminology

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