Water Sources

Edwards Aquifer - Provides information on one of the world's most well-known aquifers. Features graphs and charts, images, essays, and pictures that describe how the aquifer formed.
http://www.edwardsaquifer.net/

Aquifer Basics - Offers a brief definition of an aquifer along with pictures and information on various aquifer types, including sandstone and volcanic aquifer rocks.
http://capp.water.usgs.gov/aquiferBasics/

Georgia's Ground Water Resources - Includes details on what groundwater is, along with information on the cycle it goes through and its movement.
http://www.engr.uga.edu/service/extension/publications/b1096-cd.html

Aquifers - Provides colored pictures and information on why water is important and how it's frequently used. Features include answers to frequently asked questions and photo galleries.
http://ga.water.usgs.gov/edu/earthgwaquifer.html

South Dakota Aquifers - Learn more about aquifers by looking at South Dakota's aquifers. Discover what an aquifer is, where they can be found, and its significance to humans in general.
http://www.northern.edu/natsource/EARTH/Aquife1.htm