The second edition of Soil Taxonomy, A Basic System of Soil
Classification for Making and Interpreting Soil Surveys is now
available here in PDF format for printing or viewing. A printed copy is
The PDF file incorporates errata dated 5/00 and 8/02.
The following documents require
Taxonomy Text (PDF; 9.9 MB)
Taxonomy Maps (PDF; 15.1 MB)
Sheet for Soil Taxonomy (PDF; 7 KB)
Recommended citation: Soil Survey Staff. 1999. Soil taxonomy: A basic
system of soil classification for making and interpreting soil surveys.
2nd edition. Natural Resources Conservation Service. U.S. Department of
Agriculture Handbook 436.
A printed or CD copy of the second edition of "Soil Taxonomy" is
available from the following source:
NRCS Distribution Center
Enter keywords: soil taxonomy 2nd edition
Phone toll free: 1-888-526-3227
Proposals to Amend Soil Taxonomy
The DOC files require
The proposals shown below have not been adopted into NCSS standards. Their
posting on this webpage does not constitute formal approval. Comments on these
proposals may be returned to the national leader for soil survey standards, Mr.
Cameron Loerch, at Cameron.Loerch@lin.usda.gov.
Posted after the 2012 NCSS Regional Conferences
Posted before the 2012 NCSS Regional Conferences
Includes links to both Spanish and English versions of the Keys, along with