Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Keys to Soil Taxonomy, Twelfth Edition
This publication provides the taxonomic keys necessary for the classification of soils in a form that can be used easily in the field.
USDA Soil Surveys by State
Official USDA soil information as viewable maps and tables for more than 3200 soil surveys.
U.S. Environmental Protection Agency
The mission of the U.S. Environmental Protection Agency is to protect human health and the environment.
U.S. Geological Survey
The USGS serves the Nation by providing reliable scientific information to describe and understand the Earth; minimize loss of life and property from natural disasters; manage water, biological, energy, and mineral resources; and enhance and protect our quality of life.
National Oceanic and Atmospheric Administration
The mission of NOAA understand and predict changes in climate, weather, oceans, and coasts, to share that knowledge and information with others, and to conserve and manage coastal and marine ecosystems and resources.
U.S. Department of Agriculture
The USDA provides leadership on food, agriculture, natural resources, rural development, nutrition, and related issues based on public policy, the best available science, and effective management.