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What is ground water?

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Welcome to CoreFacts, where we're always short on time and big on science. I'm Jessica Robertson. Today's question is ...

What is ground water?

Ground water is water that flows or seeps downward and saturates soil or rock, supplying springs and wells. Ground water often begins as precipitation and soaks into the ground where it is stored underground in rock crevices and in the pores of geologic materials, also known as aquifers. This process is similar to how water fills a sponge. The upper surface of the saturated zone is called the water table.

More information on ground water may be found at http://water.usgs.gov/ogw.

And now you know. Join us again every weekday for a new CoreFact. For other CoreFacts, or for CoreCast, our in-depth science podcast, go to usgs.gov/podcasts. If you'd like to have a question featured on our show, give us an email at corefacts@usgs.gov or a phone call at 703-648-5600. Remember, long distance fees do apply.

CoreFacts is a product of the U.S. Geological Survey, Department of the Interior.

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Title: What is ground water?

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Date Recorded: 7/21/2008


Usage: This audio file is public domain/of free use unless otherwise stated. Please refer to the USGS Copyright section for how to credit this audio.

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