Understanding Soil (pdf)

Plate tectonics animations:
http://www.ucmp.berkeley.edu/geology/tectonics.html

Overview and maps of soil orders:
http://soils.ag.uidaho.edu/soilorders/index.htm

The Smithsonian Institute’s Soils exhibit:
http://www.soils.org/smithsonian/index.htm

The USDA Natural Resource Conservation Service page:

Web Soil Survey: gateway to soil survey map information for the entire U.S.:

Some really good NRCS videos on soil series and mapping:
Making a Soil Map
Looking at Spodosols in South Carolina
Describing a Soil: Brewback series
It’s a Soil Thing…
Tillage and Crop Residues
*Describing Soil Profiles*

Hydrology at the University of Georgia:
http://www.hydrology.uga.edu

The American Water Resources Association:
http://www.awra.org

A Homeowner’s Guide to On-site Sewage Mgmt. Systems (pdf)

Watering Trees

Water Movement in Trees