Geological material through which significant quantities of water move at a very slow rate; located below unconfined aquifers , above and below confined aquifers . Also known as a confining bed.
Layer of rock that keeps the ground water in the aquifer below it under pressure. This pressure creates springs and helps supply water to wells.
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. List of Glossary Terms
Confining Layer - A body of impermeable or distinctly less permeable material that lies above and/or below one or more water-bearing zones.
An impermeable rock formation that immediately overlies an aquifer, and which may contain water in the latter under pressure.
A geologic formation characterized by low permeability that inhibits the flow of water.
A geologic unit which is relatively impermeable, such as clay or rock, and does not yield usable quantities of water. Confining layers, also referred to as aquitards, restrict the movement of ground water into and out of adjacent aquifers.
a layer of clay or rock that acts as a shield to keep water from escaping from an aquifer or zone
