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  1. www.usgs.gov › special-topics › water-science-schoolAquifers and Groundwater | U.S. Geological Survey - USGS.gov

    Oct 16, 2019 · A huge amount of water exists in the ground below your feet, and people all over the world make great use of it. But it is only found in usable quantities in certain places underground — aquifers. Read on to understand the concepts of aquifers and how water exists in the ground.

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  3. www.usgs.gov › special-topics › water-science-schoolGroundwater: What is Groundwater? | U.S. Geological Survey

    Nov 6, 2018 · Groundwater is invaluable for many uses, from irrigation to drinking-water supply. But, you can't see groundwater, so how do water scientists know where it is in order to be able to drill wells and pump it out for use?

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  5. en.wikipedia.org › wiki › GroundwaterGroundwater - Wikipedia

    Globally, more than one-third of the water used originates from underground. In the mid-latitude arid and semi-arid regions lacking sufficient surface water supply from rivers and reservoirs, groundwater is critical for sustaining global ecology and meeting societal needs of drinking water and food production.

  6. www.usgs.gov › faqs › what-groundwaterWhat is groundwater? | U.S. Geological Survey - USGS.gov

    Groundwater is water that exists underground in saturated zones beneath the land surface. The upper surface of the saturated zone is called the water table. Contrary to popular belief, groundwater does not form underground rivers.

  7. www.britannica.com › science › groundwaterGroundwater | Description & Importance | Britannica

    Aug 8, 2024 · groundwater, water that occurs below the surface of Earth, where it occupies all or part of the void spaces in soils or geologic strata. It is also called subsurface water to distinguish it from surface water, which is found in large bodies like the oceans or lakes or which flows overland in streams.

    • The Editors of Encyclopaedia Britannica

  8. www.worldwildlife.org › stories › what-isWhat is groundwater and why is it so important? | Stories | WWF

    Mar 21, 2022 · Groundwater is the water found underground in the cracks and spaces in soil, sand, and rock. It is held in aquifers— permeable water-bearing rock and/or sediment—and can be extracted through wells or bubbles up naturally through a spring or is discharged into lakes or streams.

  9. groundwater.org › what-is-groundwaterWhat is Groundwater? – The Groundwater Foundation

    Groundwater is the water found underground in the cracks and spaces in soil, sand and rock. It is stored in and moves slowly through geologic formations of soil, sand and rocks called aquifers.

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