sand, or silt). Aquifers vary greatly in their characteristics. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology...

The Ogallala Aquifer (oh-gə-LAH-lə) is a shallow water table aquifer surrounded by sand, silt, clay, and gravel located beneath the Great Plains in the...

pressure within a body of rock and/or sediment known as an aquifer. When trapped water in an aquifer is surrounded by layers of impermeable rock or clay, which...

The Floridan aquifer system, composed of the Upper and Lower Floridan aquifers, is a sequence of Paleogene carbonate rock which spans an area of about...

groundwater. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water. The depth at which soil pore...

many aquifers, research is lacking or disputed as to the age of the water and the behavior of the water inside the aquifer. Large, prolific aquifers (notably...

In hydrogeology, an aquifer test (or a pumping test) is conducted to evaluate an aquifer by "stimulating" the aquifer through constant pumping, and observing...

This is a list of some aquifers in the United States. An aquifer is a geologic formation, a group of formations, or a part of a formation that contains...

The Edwards Aquifer is one of the most prolific artesian aquifers in the world. Located on the eastern edge of the Edwards Plateau in the U.S. state of...

groundwater may be from precipitation or from groundwater flowing into the aquifer. In areas with sufficient precipitation, water infiltrates through pore...

The Nubian Sandstone Aquifer System (NSAS) is the world's largest known fossil water aquifer system. It is located underground in the Eastern end of the...

The Equus Beds Aquifer is a distinct part the High Plains Aquifer System and is a principal municipal aquifer in south-central Kansas, underlying Hutchinson...

The Guarani Aquifer, located beneath the surface of Argentina, Brazil, Paraguay, and Uruguay, is the second largest known aquifer system in the world...

The aquifer properties of the aquifer essentially depend upon the composition of the aquifer. The most important properties of the aquifer are porosity...

Balanegra Aquifer is an aquifer on a coastal plain in southern Spain. It lies in an area of dolomite rock. The aquifer have had problems of saltwater intrusion...

The Mahomet Aquifer is the most important aquifer in east-central Illinois. Composed of sand and gravel, it is part of the buried Mahomet Bedrock Valley...

The Waiwhetu artesian aquifer, sometimes referred to as the Hutt aquifer, is a pressurized zone of water-retaining sand, gravel and boulders beneath the...

properties are physical properties that characterize the capacity of an aquifer to release groundwater. These properties are storativity (S), specific...

Aquifer Edwards Aquifer Englishtown aquifer Floridan aquifer Great Miami aquifer Kirkwood–Cohansey aquifer Lloyd aquifer Magothy aquifer – largest of Long...

Rhine Plain close to the faults. Located below the plain, the Upper Rhine aquifer – one of the largest in Europe – holds an estimated 45,000 km3 (11,000 cu mi)...

groundwater. Recharge is the primary method through which water enters an aquifer. This process usually occurs in the vadose zone below plant roots and is...

The Calumet Aquifer is an aquifer underlying the land at the extreme southern tip of Lake Michigan. It underlies the northern third of Lake County, Indiana...

quality is imperative when treating blackwater in proximity to an aquifer. An aquifer refers to a subsurface stratum composed of permeable rock, soil,...

Purapurani Aquifer is a natural reservoir of underground water extending across the Bolivian municipalities of El Alto, Laja, Pucarani and Viacha in the...

Groundwater flow rate in karst aquifers is much more rapid than in porous aquifers. For example, in the Barton Springs Edwards aquifer, dye traces measured the...

The Biscayne Aquifer, named after Biscayne Bay, is a surficial aquifer. It is a shallow layer of highly permeable limestone under a portion of South Florida...

of groundwater in the soil and rocks of the Earth's crust (commonly in aquifers). The terms groundwater hydrology, geohydrology, and hydrogeology are often...

common kind of well is a water well, to access groundwater in underground aquifers. The well water is drawn up by a pump, or using containers, such as buckets...

Look up OASIS, Oasis, or oasis in Wiktionary, the free dictionary. An oasis is an isolated area of vegetation in a desert. Oasis, OASIS, or The Oasis may...

Zumpango, Chalco, and Xochimilco). Much of the lake was fed from groundwater aquifers; fresh water poured in from Lake Chalco and Xochimilco's freshwater springs...