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  2. Groundwater recharge - Wikipedia

    en.wikipedia.org/wiki/Groundwater_recharge

    Groundwater recharge or deep drainage or deep percolation is a hydrologic process, where water moves downward from surface water to groundwater. Recharge is the primary method through which water enters an aquifer .

  3. Groundwater - Wikipedia

    en.wikipedia.org/wiki/Groundwater

    This is an accepted version of this page This is the latest accepted revision, reviewed on 31 October 2024. Water located beneath the ground surface An illustration showing groundwater in aquifers (in blue) (1, 5 and 6) below the water table (4), and three different wells (7, 8 and 9) dug to reach it. Groundwater is the water present beneath Earth's surface in rock and soil pore spaces and in ...

  4. Aquifer - Wikipedia

    en.wikipedia.org/wiki/Aquifer

    This groundwater is a major source of fresh water for many regions, however can present a number of challenges such as overdrafting (extracting groundwater beyond the equilibrium yield of the aquifer), groundwater-related subsidence of land, and the salinization or pollution of the groundwater.

  5. List of aquifers in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_aquifers_in_the...

    Aquifers of the United States Withdrawal rates from the Ogallala Aquifer.. This is a list of some aquifers in the United States.. Map of major US aquifers by rock type. An aquifer is a geologic formation, a group of formations, or a part of a formation that contains sufficient saturated permeable material to yield significant quantities of water to groundwater wells and springs.

  6. Water table - Wikipedia

    en.wikipedia.org/wiki/Water_table

    In the aquifer, groundwater flows from points of higher pressure to points of lower pressure, and the direction of groundwater flow typically has both a horizontal and a vertical component. The slope of the water table is known as the “hydraulic gradient”, which depends on the rate at which water is added to and removed from the aquifer and ...

  7. Opinion: Does California stand a chance of preserving our ...

    www.aol.com/news/opinion-does-california-stand...

    Faced with the deepening scars of groundwater exhaustion, lawmakers passed SGMA — a sweeping road map to get the state to the point at which we’re taking out only as much water as comes in.

  8. Will Texas run out of groundwater? Experts explain how ... - AOL

    www.aol.com/news/texas-run-groundwater-experts...

    The good news — once we get rain, wells that have gone dry do rebound. “It’s not going to be dry forever,” Ballew says. But how quickly wells replenish after the dry season can vary.

  9. Overdrafting - Wikipedia

    en.wikipedia.org/wiki/Overdrafting

    When groundwater is extracted from an aquifer, a cone of depression is created around the well.As the drafting of water continues, the cone increases in radius. Extracting too much water (overdrafting) can lead to negative impacts such as a drop of the water table, land subsidence, and loss of surface water reaching the streams.