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Aquifer - Wikipedia
An aquifer is an underground layer of water -bearing material, consisting of permeable or fractured rock, or of unconsolidated materials (gravel, sand, or silt). Aquifers vary greatly in …
Aquifers and Groundwater | U.S. Geological Survey
Oct 16, 2019 · When a water-bearing rock readily transmits water to wells and springs, it is called an aquifer. Wells can be drilled into the aquifers and water can be pumped out. Precipitation …
Principal Aquifers of the United States | U.S. Geological Survey
Mar 8, 2021 · A principal aquifer is defined as a regionally extensive aquifer or aquifer system that has the potential to be used as a source of potable (drinkable) water. For study or mapping …
Aquifers - National Geographic Society
Oct 19, 2023 · An aquifer is a body of rock and/or sediment that holds groundwater. Groundwater is the word used to describe precipitation that has infiltrated the soil beyond the surface and …
Aquifer | Types & Facts | Britannica
Mar 7, 2025 · Aquifer, in hydrology, rock layer that contains water and releases it in appreciable amounts. The rock contains water-filled pore spaces, and, when the spaces are connected, …
What Are Aquifers? - Definition, Formation Process, and Types
Jan 27, 2025 · An aquifer is a vital underground geological formation that stores and transmits groundwater. The term derives from Latin, combining " aqua " (water) and " fero " (to carry), …
What Is An Aquifer? - WorldAtlas
Jan 24, 2018 · An aquifer is not an underground river, but a porous layer of rocks. Aquifers vary in depth and the ones closer to the top layer, which is mostly used for irrigation and water …
Aquifers Explained: Definition, Types, Importance and Conservation
Dec 21, 2024 · Aquifers are one of the most important elements in the Earth’s hydrological cycle and are natural reservoirs that store and transport groundwater. These groundwater resources …
Aquifers: Where are They Found, Types of Aquifers and How Do …
Aquifers are bodies of well-saturated rocks that make way for the easy movement of water. So, when a saturated rock transmits its water to a well or spring, one can define it as an aquifer.