Artesian well
Artesian well, well in which water rises under hydrostatic pressure above the level of the aquifer (water-bearing layer of rock) in which it has been confined. True artesian wells (named for the French province of Artois, where they were first constructed) flow without assistance.
See also: Ground water.
Additional topics
21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Arcturus to Augur