UIS Commission on Karst Hydrogeology and Speleogenesis
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Glossary of Karst and Cave Terms

piezometric limit
The point within a given flow path below which the flow direction is influenced by hydrostatic pressure. In cases where flow is confined to a planar structure, the piezometric limit can be identified as a point where the flow path changes from a dip-oriented to a strikeoriented trend. The piezometric limit is determined both by discharge rate and geometry of the openings. Used to describe karst aquifers with a discontinuous piezometric surface [14].