[ Kids/Teens/Mature Teens ] Offers a brief definition of an aquifer along with pictures and information on various aquifer types, including sandstone and volcanic aquifer rocks.

[ Kids/Teens ] 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.

[ Kids/Teens ] 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.

[ Teens/Mature Teens ] 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. [PDF]