A permeable body of rock or regolith that both stores and transports groundwater.
A layer of rock of sediment able to hold or transmit water.
A permeable stratum or zone below the Earth's surface through which groundwater moves.
An underground geological formation containing groundwater that can supply wells or springs for domestic, industrial and irrigation uses.
An underground layer of rock which holds large amounts of water.
A body of rock that contains sufficient saturated permeable material to conduct groundwater and to yield significant quantities of water to wells and springs.
Sand, gravel, or porous rock through with groundwater flows.
(3) a water-bearing bed or layer of permeable rock, sand, or gravel capable of yielding large amounts of water.
Porous, water-saturated layers of sand, gravel, or bedrock that can yield an economically significant amount of water.
A geological formation which (1) contains water and (2) permits significant volumes of water to move through it under ordinary field conditions.
Layer of rock or soil under the ground that holds water – like a big underground sponge
A porous and permeable layer below the water table.
Underground water source or water-bearing rock that will hold water but allow it to be given up in usable quantities Asset Management Plan (AMP3 and AMP4) Produced by water companies for OFWAT, these plans set out the water industry investment programme for the period 2000-2010
A layer of porous rock that both stores water and allows it to drip through. Aquifers provide natural underground storages of water.
In hydrologic terms, permeable layers of underground rock, or sand that hold or transmit groundwater below the water table that will yield water to a well in sufficient quantities to produce water for beneficial use.
An underground water-bearing formation of soil or rock commonly used for drinking water.
An aquifer is a water-saturated bed of rock, through which water can flow easily and which contains sufficient water to be used for water supply.
An underground layer of rock or soil that holds the water referred to as groundwater.
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 natural underground layer, often of sand or gravel, that contains water.
a zone of the earth saturated with water.
water-containing underground strata.
An aquifer is a layer of porous rock that contains water. See Artisan Well
Any underground water-bearing rock formation or group of formations, that supplies ground water, wells, or springs.
A permeable zone below the Earth's surface which stores groundwater and allows it to move easily.
One or more strata of rock or sediment that is saturated and sufficiently permeable to yield economically significant quantities of water to wells or springs. An aquifer includes any geologic material that is currently used or could be used as a source of water (for drinking or other purposes) within the target distance limit. All geologic materials combined into one aquifer are referred to as a single hydrologic unit.
A geological formation capable of storing and yielding significant quantities of water. It is usually composed of sand, gravel, or permeable rock which lies upon a layer of clay or other impermeable material. This impermeable layer does not allow the water to penetrate to lower depths. Thus, various aquifers can be present at various depths. The low permeability formation located above and/or below an aquifer is called an aquiclude. The water in aquifers is abstracted using wells. The shallowest aquifer is the most exposed to contaminants filtering down from the surface. The shallow aquifer can be protected from contamination by the presence of an impermeable layer above it. This layer can be natural or artificial - paving, etc.
An underground geological formation able to store and yield water.
A saturated geological unit (eg. sands, gravels, fractured rock) which can yield water to wells at a sufficient rate to support a well.
A natural underground formation that is saturated with water, and from which water can be withdrawn.
geologic formation which contains usable amounts of groundwater that can be accessed from a well or spring
an underground layer of rock, sediment or soil that is filled with water. Water moves through the aquifer very slowly.
an underground store of water.
Sediment or rock that transmits water easily.
a formation that readily yields water.
a permeable geological formation that is capable of both storing and transmitting water in significant amounts.
A geologic formation, group of formations, or part of a formation that contains sufficient saturated permeable material to yield significant quantities of water to springs and wells.
Natural underground layer of porous, water-bearing materials usually capable of yielding a large amount or water supply.
an area that contains large amounts of water under the surface of the earth.
Layer of rock (predominantly sandstone) that holds water and allows water to percolate through it.
an underground rock formation composed of sand, soil, gravel, or porous rock that can store and supply groundwater to wells and springs
Underground layer of rock or sand that stores water. Humans use wells to get drinking water from aquifers.
A layer of underground sand, gravel, or permeable rock in which water collects. Aquifers may lie close to the surface or at great depths. Aquifers can be hundreds of miles long and wide or narrow, shallow veins running through rock. With such flat ground in the Grand Prairie, rainwater matriculates down through the porous sedimentary rocks where it is stored. When the water source becomes of significant size, it is termed an aquifer, especially when drilling into the rock allows the tapping of the aquifer for use in crop irrigation and animals as well as human use
A water-bearing unit of permeable rock, sand or gravel, which yield considerable quantities of water to springs and wells
An underground water reservoir contained between layers of rock, sand or gravel.
A geologic formation capable of transmitting water through its pores at a rate sufficient for water supply purposes. The term water-bearing is sometimes used synonymously with aquifer when a stratum furnishes water for a specific use. Aquifers are usually saturated sands, gravel, fractures, caverns or vesicular rock.
A saturated, permeable geologic formation or structure that is capable of yielding water in usable quantities under ordinary hydraulic gradients.
Underground storages of water or ‘dams'
Water-bearing strata of permeable rock, gravel, or sand.
Areas underground where groundwater exists in sufficient quantities to supply wells or springs.
A permeable formation that stores and transmits groundwater in sufficient quantity to supply wells.
A geological formation through which water may percolate slowly and for long distances, eventually yielding groundwater to springs and wells. Underground water is stored in dozens of reservoir-like layers. Most of the water in aquifers is contained in beds of sand, gravel or other materials and can be pumped to the surface.
Pohjavettä johtava kerros Akvifer A subsurface layer or layers of rock or other geological strata of sufficient porosity and permeability to allow either a significant flow of groundwater or the abstraction of significant quantities of groundwater.
A permeable subsurface stratum, or zone, through which groundwater moves in sufficient quantities to supply water for wells and springs.
Geologic formation that is saturated and sufficiently permeable to transmit large quantities of water.
rock layer that holds groundwater
A subsurface rock or sediment unit that is porous and permeable. To be an aquifer it must have these traits to a high enough degree that it stores and transmits useful quantities of water.
An aquifer that is bounded above and below by impermeable rock or sediment layers. The water in the aquifer is also under enough pressure that, when the aquifer is tapped by a well, the water rises up the well bore to a level that is above the top of the aquifer. The water may or may not flow onto the land surface.
An aquifer that is bounded above and below by impermeable rock or sediment layers. There may or may not be enough pressure in the aquifer to make it an "artesian aquifer".
An aquifer that is not overlain by an impermeable rock unit. The water in this aquifer is under atmospheric pressure and is recharged by precipitation that falls on the land surface directly above the aquifer.
A geologic formation that is water-bearing and which transmits water from one point to another.
A subsurface water-bearing geological structure capable of storing and yielding water to streams, springs, or wells.
rock formation containing a recoverable water resource
A body of rock that can collect groundwater, and can yield water to wells and springs. A groundwater reservoir.
A body of rock saturated with water, that is capable of allowing the subterranean water to be stored, transmitted and is capable of absorbing recharge water. It can yield water through a well or a spring.
any geological formation containing water, especially one that supplies water for wells, springs, etc.
A geologic formation(s), such as the bedrock that underlies surface soils. These rock formations store and/or transmit water, such as to wells and springs. An aquifer typically refers to those bedrock formations that can yield sufficient water to constitute a usable supply for people's uses.
A layer of soil or rock filled with water and capable of supplying water to wells.
A body of rock that is water-saturated and is sufficiently permeable to permit ground water to move through it.
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.
A geologic formation containing water. Natural gas is often found in the presence of aquifers.
A saturated sediment or rock that is sufficiently porous and permeable to be useful as a source of water and that provides a generally sustainable yield of suitable quantities of ground water.
Sub-surface reservoir of water, usually contained in porous rock
A water-bearing layer of rock, sand and/or gravel, with sufficient density of pores to allow water to move through the layer.
a body of earth material capable of storing and transmitting water in economical amounts
a body of geologic material that can supply useful quantities of ground water to natural springs and water wells
a body of sand or porous rock capable of storing and producing significant quantities of water
a body of saturated rock through which water can easily move
a body of sediment or rock that holds an economically significant amount of groundwater
a difficult geological body to define
a geological (created by rocks) formation containing water
a geological formation, such as porous sand and gravel or fractured rock that is able to supply a useable quantity of water
a geologic formation made up of porous material such as sand, gravel, and unconsolidated rocks
a geologic formation that is permeable enough to transmit sufficient quantities of water to possibly support the development of water wells
a geologic formation that stores, transmits, and yields significant quantities of water to wells and springs
a geologic unit or combination of units which can supply enough water to be of use
a geologic unit (sand and gravel, sandstone, limestone, or other rock) that will yield usable amounts of water to a well or spring
a geologic unit that can store and transmit water
a geologic unit that is fully saturated with water)
a ground-water bearing formation sufficiently permeable (allows water to pass through easily enough) to transmit and yield water in usable quantities
a huge natural underground water bottle
a large body of permeable material where groundwater is present in the saturated zone
a layer of permeable underground rock saturated with groundwater that can flow easily into wells
a layer of rock or soil that allows water to flow through it or be stored within it
a layer of rock, which can absorb a large quantity of water
a layer of sand, gravel or permeable rock with enough water to yield a useful amount
a naturally-occurring underground geological formation consisting of permeable materials that store and transmit water that naturally seeps into the ground from rainfall and surface flow
a natural underground area where large quantities of ground water fill the spaces between rocks and sediment
a natural underground reservoir
an empty space between rocks or soil
an example of this type of fluid-rock system
an underground body of sand, gravel, or rock that is filled with water and is capable of supplying enough water to a well
an underground collection of water
an underground formation of loose soil and permeable rock that is capable of storing useful quantities of water
an underground formation of permeable rock or loose material that can produce useful quantities of water when tapped by a well or as dischrage via a spring
an underground formation that can hold sufficient water for either domestic or industrial use
an underground geologic formation through which water flows slowly
an underground layer of permeable soil (such as sand or gravel) that contains water and allows the passage of water
an underground layer of rock or sand that captures and holds water
an underground layer of rock or sediment that has pores or holes in it
an underground layer of water-bearing permeable rock, or permeable mixtures of unconsolidated materials (gravel, sand, silt, or clay)
an underground reservoir of sand saturated with water that can provide significant quantities of water to a well
an underground reservoir of water, residing in the spaces between grains of sand and gravel
an underground storage of freshwater in porous rock, trapped by impervious rock strata
an underground stream, spring or well
a permeable subsurface soil or rock layer that is capable of storing, transmitting and supplying a significant amount of ground water to wells or springs
a porous and permeable layer through which water can easily flow (e
a porous layer of gravel, stone or sand that is below the water table
a rock layer that is permeable to groundwater flow in usable amounts
a rock unit that will yield usable quantities of water to a well or spring
a rock unit that will yield water in usable quantities to wells or springs Unlike fast moving surface water, groundwater will flow several inches to several feet a year
a saturated geologic formation that will yield a usable quantity of water to a well or spring
a sort of underground reservoir or deposit of water, which is tapped by drilling wells and pumping the water to the surface for distribution
a subsurface layer of earth or permeable rock that yields useful quantities of groundwater to wells and springs
a subsurface layer of rock or other material that is permeable enough to allow the storage and flow of significant quantities of groundwater
a subsurface water supply which yields useful quantities of ground water to wells and springs
a volume of sediment or rock with water filling all the void spaces between grains and in cracks
a water-bearing layer of rock or sediment capable of yielding usable quantities of water
a water bearing rock formation
a water-bearing, underground zone of generally gravel and sand
a water holding body of gravel, sand or rocks
A porous, water-bearing geologic formation. Generally restricted to materials capable of yielding an appreciable supply of water. Also called groundwater aquifer.
A geological formation such as sand and gravel, fractured rock or caverns that stores and transports ground water.
an underground area of permeable rock, gravel, or sand that is saturated with water
Aquifers are geological formations that can store, transmit and yield water to a well or spring.
An underground layer of earth or rock that stores water.
An underground porous rock formation containing water, especially one that supplies water for wells or springs.
Groundwater bearing layer of rock or sand; the primary source of potable water in arid and semi-arid areas.
The aquifer is the natural underground rock formation that carries water to wells and springs.
Aquifers are areas of soil or rock that contain large amounts of water. Aquifers may be specifically defined as those areas from which we can obtain and use the water.
A layer in the soil that is capable of transporting a significant volume of groundwater.
a soil layer saturated with water.
an underground layer of rock or soil that contains water and can supply a large quantity of water to wells or springs
Rock or sediment through which groundwater moves easily.
An underground bed of saturated soil or rock that yields significant quantities of water.
An underground layer of rock, sand, or gravel capable of storing water within cracks and pore spaces, or between grains. When water contained within an aquifer is of sufficient quantity and quality, it can be tapped and used for drinking or other purposes. The water contained in the aquifer is call groundwater.
a saturated geologic formation (rock or sediment) capable of storing, transmitting and yielding reasonable amounts of groundwater to wells and springs
One or more geologic formations containing sufficient saturated porous and permeable material to transmit water at a rate sufficient to feed a spring or for economic extraction by a well. Combination of two Latin words, aqua or water, and ferre, to bring; literally, something that brings water.
underground strata sufficiently permeable to yield economic quantities of water to wells, boreholes etc.
a layer of rock which holds water and allows water to percolate through it
A natural, subterranean accumulation of water created by specific underground conditions.
Underground zone of permeable rock saturated with water under pressure.
Source: Economics: Principles & Practices Definition: underground water-bearing rock formation (p.550)
an underground formation saturated with water. For more info, see aquifer page.
An underground saturated, permeable, geological formation that can transmit significant quantities of water under ordinary hydraulic gradients (see hydraulic gradient). The most common aquifers are unconsolidated sands and gravels, permeable sedimentary rocks such as sandstones and limestones, and heavily fractured volcanic and crystalline rocks. A confined aquifer is an aquifer that is confined between two confining beds, such as aquicludes or aquitards (see aquiclude and aquitard). An unconfined aquifer, or water-table aquifer, is an aquifer in which the water table forms the upper boundary (see water-table). Confined aquifers occur at depth, unconfined aquifers near the ground surface.
A large body of underground water.
A geological formation or group of formations in the ground which is usually composed of rock, gravel, sand or other porous material and which yields water to wells or springs. Can be polluted by introduction of pollutants through poorly capped wells, injection waste disposal and other entries below ground.
the section of the subsoil where groundwater accumulates
Underground deposits of sand, gravel, or rock saturated with water. The two major types of aquifers are confined and unconfined.
An underground stratum that is saturated with water and transmits water readily.
A body of rock or sediment that is sufficiently porous and permeable to store, transmit, and yield significant or economic quantities of groundwater to wells and springs.
geological formation of permeable rock, gravel, or sand containing or conducting groundwater
an underground layer of spongy rock, gravel, or sand in which water collects.
Aquifers are underground geological formations containing water.
A geologic formation that contains sufficient saturated permeable material to conduct groundwater and to yield worthwhile quantities of groundwater to wells and springs.
An underground layer of rock or sediment which holds water and allows water to percolate through.
a layer of underground sand, gravel or porous rock through which water flows slowly. Use of the term is usually restricted to those water-bearing structures capable of yielding water in sufficient quantity to constitute a usable supply.
A geological formation of permeable rock, sand, or gravel that conducts groundwater and yields significant quantities of water to springs and wells.( 21)
A water-bearing geologic formation, sometimes confined between clay layers and sometimes on the surface. The source of ground water for drinking and irrigation.
Underground rock, sand or gravel formations which store water. Irvine Ranch Water District supplies about 50 percent of its water needs from the aquifers that make up the Orange County Groundwater Basin.
Porous, water-saturated subsurface layers of sand, gravel, and rock that can yield an economically significant amount of water.
porous, water-bearing layer of sand, grave), and rock below the Earth’s surface; reservoir for groundwater.
a permeable layer of rock under the surface of the ground through which water can move. Usually, aquifers are sand-stone or limestone, but some may be mixed sand and gravel, or even fractured rock. Claystones, shales, and most igneous and metamorphic rocks are aquicludes.
An underground layer of porous rock that contains water. A desert aquifer can support an oasis, a well, or a natural reservoir.
A geological formation, such as fractured bedrock, glacial sands or gravels, which contains water and will allow water to pass through it in sufficient quantities to be economically viable. This is known as ground water.
A body of rock or sediment that is saturated and sufficiently permeable to conduct ground water in economically significant quantities to wells and springs.
a relatively permeable rock layer below the water table that contains a significant amount of water.
A porous layer of underground rock that holds water.
A layer of permeable rock sandwiched between two layers of impermeable rock. E.g. a layer of chalk sandwiched between two layers of clay. The chalk layer becomes saturated with water - this is called an aquifer.
A rock layer with enough space between its grains to allow water to flow relatively freely.
A subsurface formation of rock, glacial material, or other deposits that contains water and is capable of storing and yielding water to a well or spring.
Underground accumulation of water in certain types of geological formation.
a geologic formation, or a group or part of a geologic formation, that contains sufficient saturated permeable material to transmit significant quantities of groundwater to wells and springs Return to Previous Page.
A porous, water-saturated layer of sediment and bedrock under the Earth's surface; also described as artesian (confined) or water table (unconfined).
A geologic formation of sand, rock and gravel through which water can pass and which can store, transmit and yield significant quantities of water to wells and springs.
Yields water for consumption, a porous formation.
A subterranean geological formation that is capable of supplying a significant amount of water to a well or spring.
A water-bearing bed of strata, either by virtue of its porosity or because it is pervious
Porous layer of underground rock that contains groundwater.
geologic formation which contains and transmits water from one point to another in quantities sufficient for economic use.
A geologic formation or series of formations which yield water in sufficient quantities to be a valuable source of supply.
A subsurface water-bearing layer that will yield water in a usable quantity to a well or spring.
a layer of sand and gravel beneath the earth's surf ace that has pore spaces saturated with water (The Cohansey aquifer is the major Pinelands aquifer.)
a body of rock or soil that is filled to its capacity with water that can be used as a source of groundwater
a zone or body of water beneath the earth's surface (see groundwater)
naturally stored underground water
A stratum or zone beneath the surface of the earth capable of producing water, as from a well.
An underground body of fractured rock, sand, or gravel functioning as a reservoir or conduit of groundwater.[ J K U V X Y Z
a permeable layer of rock and sediment that stores and carries groundwater in enough quantity to supply wells
Zone in which readily extractable water saturates the pores of the geologic formations.
A body of permeable rock that is capable of storing significant quantities of water.
A geological formation, group of formations, or portion of a formation capable of yielding significant quantities of groundwater to springs or wells.
An underground formation or group of formations in rocks and soils containing enough ground water to supply wells and springs.
Compare? A water-bearing layer of rock (including gravel and sand) that will yield water in usable quantity to a well or spring.
A body of rock that contains significant quantities of water that can be tapped by wells or springs.
permeable rock capable of yielding groundwater to wells and springs
A layer of rock which holds and allows water to move through it, and from which water can be extracted. Confined aquifers have a layer of rock above them which are impermeable to water.
Any strata or a group of interconnected strata comprising of saturated earth material capable of conducting groundwater and of yielding usable quantities of groundwater to borehole(s) and / or springs ( a supply rate of 0.1 L/s is considered as a usable quantity)
An underground geologic formation of rock, soil or sediment that is naturally saturated with water; an aquifer stores groundwater.
An underground layer of earth that contains groundwater. Aquifers are a major source of drinking water.
The saturated underground formation that will yield usable amounts of water to a well or spring. The formation could be sand, gravel, limestone or sandstone. The water in an aquifer is called groundwater. A saturated formation that will not yield water in usable quantities is called an aquiclude. Most Pennsylvania aquifers may be categorized into confined and unconfined aquifers.
a water-bearing layer of rock or sediment capable of yielding supplies of water; typically is unconsolidated deposits or sandstone, limestone or granite. Can be classified as confined or unconfined. List of Glossary Terms
A layer or zone below the surface of the earth which is capable of yielding a significant volume of water. The upper level of the aquifer is called the water table.
water bearing layer of the earth's crust.
Water bearer. Earth materials that contain ground water and through which ground water may flow freely. Some examples of these include sand, porous sandstone, and gravel. Aquifers vary widely in their ability to hold water and the speed at which water flows through them.
A permeable geological formation through which groundwater can flow and from which groundwater can be read-ily extracted. (see also groundwate
An underground geological zone which is able to store or conduct water in reasonably large quantities.
Rock or sediment in a geologic formation which is saturated and sufficiently permeable to transmit economic quantities of water.
An underground formation of rock or sediment through which water filters slowly. Wells are often drilled into aquifers.
A geologic formation, group of formations, or part of a formation capable of storing, receiving and transmitting water. The formation is capable of yielding enough water to support a well or spring. Confined Aquifer An aquifer that is overlain by a confining layer of impermeable soil or rock material. The water table is separated from the atmosphere by the impermeable layer. This type of aquifer is sometimes called an artesian aquifer. Unconfined Aquifer An aquifer without an upper confining layer of impermeable soil or rock material. The water table is exposed to the atmosphere through a series of interconnected openings in the overlying permeable soil and/or rock layers and is in equilibrium with atmospheric pressure.
(1.)The three dimensional sub-surface geometry of a geologic rock formation (or, group of rock formations or part of a formation) that contains ground water in the spaces between sediment grains, in voids, or in fractures. (2.) A geological formation or structure that has the capability to store and/or transmit water to wells and springs. Use of the term aquifer is usually restricted to those water-bearing formations capable of yielding water in sufficient quantity to constitute a usable supply source.
Natural underground storage that yields water to wells or springs.
a geologic formation capable of transmitting significant quantities of groundwater under normal hydraulic gradients.
Underground sediments capable of holding and providing large quantities of water. A sole source aquifer is a region's only supply of water.
the underground layer of water-soaked sand and rock that acts as a water source for a well; described as artesian (confined) or water table (unconfined).
An underground water course.
A geologic formation that is capable of yielding a significant amount of water to a well or spring. All of he spaces and cracks, or pores, between particles of rock and other mineral are saturated with water. Water can move through the pores toward a spring or other discharge are, or pumping well
A water-bearing layer of rock or sediment that is capable of yielding useable amounts of water. Drinking water and irrigation wells draw water from underlying aquifers.
An underground source of water. This water may be contained in a layer of rock, sand or gravel.
An underground bed or layer of permeable rock, sand, or gravel containing water.
Longer Description A water bearing stratum of permeable rock, sand, or gravel. Term Acronym Source
An underground formation of rock or sediment which is saturated and sufficiently permeable to transmit suitable quantities of water to a well or spring.
A water-bearing layer (or several layers) of rock or sediment capable of yielding supplies of water; typically is unconsolidated deposits or sandstone, limestone or granite; and can be classified as confined or unconfined.
A rock formation that contains sufficient porosity or fractures to hold substantial water
A layer of rock that can hold groundwater in sufficient quantity to serve wells.
Any subsurface material that holds a relatively large quantity of groundwater and is able to transmit that water readily.
A rock formation containing groundwater that can be abstracted economically in useful quantities.
A permeable rock stratum below the earth's surface through which groundwater moves. The aquifer generally is capable of producing water for a well.
An underground rock formation composed of permeable materials such as sand, soil, or gravel that can store groundwater and supply it to wells and springs.
An underground layer of rock or soil containing ground water.
An underground layer of sand, gravel or rock that stores or conveys water below the surface of the soil.
A permeable layer of rock that retains water.
An underground lake or pond containing fresh water.
A water-bearing rock strata. In a water-drive field the aquifer is the water zone of the reservoir underlying the oil zone.
A water bearing layer of permeable rock, sand, or gravel beneath the earth's surface. In this report, the aquifers are defined as follows: shallow aquifer: wells were typically completed across the water table at about 40 feet below ground surface. intermediate aquifer: wells were typically completed between 60 to 120 feet deep. The zone was subdivided into: a) I1 categories approximately 60 to 85 feet deep. b) I2 categories approximately 86 to 120 feet deep. deep aquifer: wells were typically completed below 120 feet deep. The zone was further subdivided into the following zones: a) D1 - generally 120 to 150 feet deep. b) D2 - generally ranges from 150 to 250 feet deep. c) D3 - generally ranges from 250 to 350 feet deep. d) D4 - generally ranges from 350 feet and deeper.
An underground bed or layer of earth, gravel or porous stone that contains water. The depth of this layer can vary from a few feet to several hundred feet below the ground.
An underground layer of rock, sand, or gravel that contains water in sufficient quantities to supply a well.
a land, gravel or rock formation capable of storing or conveying water below the surface of the land.
A water-bearing stratum of permeable rock or soil able to hold or transmit much water.
an underground layer of rock, sediment or soil that is filled or saturated with water
An underground formation composed of materials such as sand, soil, or gravel that can store and supply groundwater to wells and springs. Most aquifers used as a drinking water source in the United States are within a thousand feet of the earth’s surface.
an underground layer of rock or soil able to hold large amounts of ground water.
A permeable body of rock, such as fractured bedrock or glacial till, that is saturated with ground water and is capable of providing significant quanties of water to wells and springs. Modified from Glossary of Geology, 4th Edition, 1997, American Geological Institute.
underground formations capable of storing water.
a water bearing layer of rock, sand, or gravel which can yield significant quantities of water to wells and springs.
permeable water-bearing formation capable of yielding exploitable quantities of water
Hydraulically interconnected, recognizable, or able to be mapped saturated geological materials (rock or sediment) that are sufficiently conductive to provide a useable supply of water to a well or spring and that are hydraulically distinctive from surrounding geologic materials. Aquifers are distinguished by a combination of hydraulic properties, geologic character, hydraulic boundaries, hydraulic head, and water quality.
an underground layer of soil, rock or gravel able to hold and transmit water. Bores and wells are used to obtain water from aquifers
An underground water system that is contained within the pores of rock and sediment. Wells and tap aquifer systems.
A saturated permeable geologic structure that can transmit significant quantities of water.
Natural, underground porous formation where mineral-bearing water flows or is stored. Source of well water.
A layer of permeable rock under the ground which can hold water in cracks and pores
a geologic (rock) formation through which groundwater moves and that is capable of producing water in sufficient quantities for a well
An aquifer is a geological formation or structure that stores and/or transmits water, such as to wells and springs.
A geologic formation that can hold--and provide--large quantities of water readily. Aquifers can be classified as confined or unconfined.
A geologic formation which contains sufficient saturated permeable material to yield significant quantities of water to wells and springs.
A geologic formation capable of holding and yielding significant amounts of ground water.
A subterranean layer of unconsolidated material containing water, which may be connected to the sea.
a permeable body of rock capable of yielding quantities of ground water to wells and springs.
an underground area of rock, clay, sand, and gravel that stores water.
an underground area made of rock, clay, and sand where water is stored.
an underground layer of rock and sand that contains water
is a porous rock structure within which water travels and is stored. Aquifers may be shallow, a few metres in depth, or very deep being several hundred metres in depth.
An underground porous, water-bearing geological formation.
Saturated geologic material sufficiently permeable to yield significant quantities of water to wells and springs; described as artesian (confined) or water table (unconfined).
Water-bearing rock or rock formation located beneath the ground surface.
An inclined subsurface porous rock layer between two non-porous layers, containing a substantial amount of water. Forest Management
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 rock or granular (sand or gravel) formation in which water can collect and through which water can be transmitted; more fractured or porous formations can hold and transmit greater quantities of water and so provide a useful energy source for an EES (also see Ground water).
A porous, water-bearing geologic formation that yields water for consumption.
Rock formations under the ground that carry water - this water can be recovered and used for washing and cooking.
A permeable water bearing deposit, such as thick sandstone, that provides useful supplies of water if tapped. See confined aquifer and fractured rock aquifer and porous rock aquifer.
A geologic formation that stores water, aquifers may yield significant quantities of water to wells and springs and this water is often utilized as a primary source for municipal, industrial, irrigation and other uses.
A water-bearing underground layer of rock or sand.
the underground porous rock structure which holds water.
a water-saturated zone of rock below the Earth's surface capable of producing water in useful quantities, as from a well.
Water-bearing geologic formations that permit the movement of ground water.
a layer of underground rock or sand which stores and carries water
A formation, group of formations, or part of a formation that contains sufficient saturated permeable material to yield usable quantities of water to wells and springs.
An underground layer of rock or gravel able to hold and allow water to move through it, and from which water can be extracted.
An underground, water-bearing layer of earth, porous rock, sand, or gravel, through which water can seep or be held in natural storage. Aquifers generally hold sufficient water to be used as a water supply.
An underground formation of rock, sand and/or gravel that water flows through. It can be reached by a well or it can come to the surface as a spring.
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.
soil or rock below the land surface that is saturated with water. There are layers of impermeable material both above and below it and it is under pressure so that when the aquifer is penetrated by a well, the water will rise above the top of the aquifer.
an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.
An aquifer is a water-bearing bed or stratum of permeable rock, sand, or gravel capable of yielding considerable quantities of water to wells or springs. More
a permeable body of rock capable of yielding quantities of groundwater to wells or springs
A water-bearing layer of soil, sand, gravel, or rock that will yield usable quantities of water to a well.
A porous and permeable body of rock or sediment through which groundwater flows.
Any underground geological formation containing water.
an underground geological formation containing usable amounts of groundwater
A body of rock or sediment that contains abundant fresh water in a network of connected pores (small intergranular spaces) or fractures. Aquifers generally are characterized by the amount of pore space that they contain (porosity) and the capacity for water to pass through interconnected pore networks (permeability). [ Return to text passage
a geologic formation that transmits water underground, usually sands, gravel, and fractured, porous, cavernous, and vesicular rock.
a stratum of permeable rock, sand, or the like, which contains water
A layer of underground rock or sand that stores and transports water. Jump to Top
A subsurface rock unit from which water can be produced.
A water-bearing bed of porous rock, often sandstone.
Rocks or unconsolidated sediments that are capable of yielding a significant amount of water to a well or a spring.
A body of rock that is saturated with water or transmits water. When people drill wells, they tap water contained within an aquifer. ( FS People's Glossary of Eco Mgmt Terms)
A geologic formation that stores and/or transmits water. A confined aquifer is bounded above and below by formations of impermeable or relatively impermeable material. An unconfined aquifer is made up of loose material, such as sand or gravel, that has not undergone settling, and is not confined on top by an impermeable layer.
A geologic formation(s) such as the bedrock that underlies the soil surface. These rock formations store and/or transmit water to springs and wells which provide drinking water. An aquifer typically refers to those bedrock formations that can yield sufficient water to constitute a usable supply for people's uses.
An underground layer of rock or soil that contains important amounts of water.
Any rock or sediment with spaces that hold water in sufficient quantities to yield economically valuable amounts of water to wells and springs.
A permeable water-bearing stratum which is capable of storing and yielding water when tapped by a well.
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.
An underground geological formation, or group of formations, containing water. Are sources of groundwater for wells and springs.
A stratum of relatively high permeability; a water-bearing stratum of rock or soil.
A water-bearing stratum of porous rock, gravel or sand.
An underground geologic formation capable of storing water.
A natural water-bearing geological formation (e.g., sand, gravel, sandstone) which is found below the surface of the earth.
an underground geological formation or group of formations that contain water, a source of ground water for wells and springs
Water-bearing stratum of permeable sand, rock, or gravel.
A body of groundwater. (This is not a lake in a cave; see "groundwater."_
An underground water-bearing layer of soil.
An aquifer is an underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, silt, or clay) from which groundwater can be usefully extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology.