A body of rock that contains sufficient saturated permeable material to conduct ground water and to yield significant quanties of water to wells and springs From Glossary of Geology, 4th Edition, 1997, American Geological Institute
a geologic formation(s) that is water bearing A geological formation or structure that stores and/or transmits water, such as to wells and springs Use of the term is usually restricted to those water-bearing formations capable of yielding water in sufficient quantity to constitute a usable supply for people's uses
A geologic sub-surface formation, group of formations, or part of a formation that contains sufficient saturated, permeable material to yield useful quantities of ground water to wells and springs
An underground formation of rock or sediment which is saturated and sufficiently permeable to transmit suitable quantities of water to a well or spring
An underground water-bearing layer of rock, including gravel and sand, that will yield water in usable quantity Aquifers are sources of water for wells and springs
Underground reservoir-like layer of water Most of the water in aquifers is contained in beds of sand, gravel, or other material and can be pumped to the surface
An underground geologic formation composed of materials such as rock, sand, soil or gravel that can store and supply ground water to wells and springs Aquifers in Alaska can be as little as a few feet below ground surface to more than 200 feet below ground surface A ground water supply is usually considered an aquifer if it contains enough water to supply the water needs for a community
A geologic formation (or one or more geologic formations) that is porous enough and permeable enough to transmit water at a rate sufficient to feed a spring or a well An aquifer transmits more water than an aquitard Sandstone beds and the Ogallala Formation are some of the best water-producing layers in Kansas and are used extensively for private and municipal water supplies
A body of rock that is sufficiently permeable to conduct ground water and to yield economically significant quantities of water to wells and springs [Bates, Robert L , and Jackson, Julia A , eds , 1987, Glossary of Geology (3d ed ): Alexandria, Va , American Geological Institute, p 33]
A saturated permeable geologic unit that can transmit significant (economically useful) quantities of water under ordinary hydraulic gradients (Specific geologic materials are not innately defined as aquifers and aquitards, but within the context of the stratigraphic sequence in the subsurface area of interest )
- A subsurface formation that stores or transmits water in recoverable quantities and can be used as a source of well water for domestic and agricultural use
An underground basin where water is stored after percolating down through many layers of rock and gravel These basins are dark, and bacteria cannot live in them The water in aquifers is clean and safe for drinking without adding any chemicals Some of our drinking water is pumped out of aquifers If aquifers were allowed to dry out, the ground would collapse just as if a chair were pulled out from under a student (An aquifer is a body of rock that is sufficiently permeable to conduct groundwater and to yield economically significant quantities of water to wells and springs )
In geology, an aquifer is an area of rock underneath the surface of the earth which absorbs and holds water. In hydrology, a rock layer or sequence that contains water and releases it in appreciable amounts. The rocks contain water-filled pores that, when connected, allow water to flow through their matrix. A confined aquifer is overlain by a rock layer that does not transmit water in any appreciable amount or that is impermeable. There probably are few truly confined aquifers. In an unconfined aquifer the upper surface (water table) is open to the atmosphere through permeable overlying material. An aquifer also may be called a water-bearing stratum, lens, or zone
An aquifer is a saturated permeable geologic unit that is capable of transmitting significant quantities of water under ordinary hydraulic gradients or is permeable enough to yield economic quantities of water to wells In Jamaica, there are three general types of aquifer: Alluvium aquifer is composed mainly of gravel and sand with some silt and clay which are deposited by physical processes in river channels or on flood plains Limestone aquifer is composed of members of the White Limestone Group and exhibits mature karstic features such as a very high infiltration capacity, predominant subsurface drainage, and highly compartmentalized subsurface conduit flow Coastal aquifer is composed of raised reefs of the Falmouth Formation, which are highly karstified limestone aquifers with high permeability and low groundwater storage potential
A formation, a group of formations, or part of a formation that contains sufficient saturated permeable material to yield significant quantities of water to wells and springs