Confining Layer: geological material through which significant quantities of water can not move; located below unconfined aquifers, above and below confined aquifers. Also known as a confining bed.
Confining layer: Geologic material with little or no permeability or hydraulic conductivity. Water does not pass through this layer or the rate of movement is extremely slow.
confining layer A geologic formation characterized by low permeability that inhibits the flow of water (see also aquitard).
Confining Layer: A geologic body of low hydraulic conductivity above or below one or more aquifers. Also called an aquiclude.
A confining layer in an aquifer that is essentially impermeable to water flow.
Aquifer
The water-yeilding earthen layer where water is stored. The geologic formation, thorough which water can flow horizontally and be pumped.
Artesian (Flowing) Aquifer: aquifer in which water is held under pressure by confining layers, forcing water to rise in wells above the top of the aquifer.
0 that sink through the water column until they reach a confining layer. Because they are at the bottom of aquifers instead of floating on the water table, typical monitoring wells do not indicate their presence.
A zone where water is confined in an aquifer under pressure so that the water will rise in the well above the bottom of the confining layer.
Aseptic
Free from bacterial contamination.
Artesian zone: A zone where water is confined in an aquifer under pressure so that the water will rise in the well casing or drilled hole above the bottom of the confining layer overlying the aquifer.
 See also: Water, Aquifer, Well, Concentration, Table
  
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