USGS - Source, Movement, and Age of Ground Water in a Coastal California Aquifer

SOURCE, MOVEMENT, AND AGE OF GROUND WATER IN A COASTAL CALIFORNIA AQUIFER

By John A. Izbicki

U.S. Geological Survey Fact Sheet 126-96

Age of Ground Water

Naturally occurring radioactive isotopes of hydrogen (tritium) and carbon (carbon-14) were used to determine the age (time since recharge) of ground water. Tritium was used to identify recently recharged (post 1952) ground water and carbon-14 was used to estimate the age of older ground water.

Next-Recently Recharged Water

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SOURCE, MOVEMENT, AND AGE OF GROUND WATER IN A COASTAL CALIFORNIA AQUIFER

The URL for this page is <http://ca.water.usgs.gov/fact/b08/age.html>. If you have any questions or comments about this document contact: webmaster@maildcascr.wr.usgs.gov

The URL for this page is <http://ca.water.usgs.gov/fact/b08/age.html>.
If you have any questions or comments about this document contact:
webmaster@maildcascr.wr.usgs.gov