Offers a brief definition of an aquifer along with pictures and information on various aquifer types, including sandstone and volcanic aquifer rocks.

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.

Examines the role pH and materials including clay, limestone, and minerals play on the quality of aquifers and other water sources.

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.

Includes details on what groundwater is, along with information on the cycle it goes through and its movement.

Includes brief information on groundwater and 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.