ARTESIAN WELL
A special type of well in which water rises automatically under the pressure of a column of water to the ground surface, either through a natural or man-made hole, is known as an artesian well. The name artesian is derived from the province of Artois in France, where the first well of this type was sunk. Artesian wells occur in regions which fulfil certain conditions: a layer of permeable rock between two impermeable rock layers; synclinal or tilted rock structure; exposure of permeable rock to the ground sUrface; and sufficient amount of rainfall. The biggest area 0( artesian well in the world is Great Artesian Basin of Australia.
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