Soil Taxonomy

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 also available.

The PDF file incorporates errata dated 5/00 and 8/02.

The following documents require Acrobat Reader.

Soil Taxonomy Text (PDF; 9.9 MB)
Soil Taxonomy Maps (PDF; 15.1 MB)
Errata Sheet for Soil Taxonomy (PDF; 7 KB)

A printed copy of the second edition of "Soil Taxonomy" is available from the following source:

Superintendent of Documents
U.S. Government Printing Office
P.O. Box 371954
Pittsburgh, PA 15250-7954

Phone toll free: 866-512-1800
(D.C. area 202-512-1800)
FAX: 202-512-2250

Website: http://bookstore.gpo.gov
Price U.S. $96.50
Non-U.S. $135.10
Stock number: 001-000-04663-2

Proposals to Amend Soil Taxonomy

There are new proposals to amend Soil Taxonomy, but they are not available for review at this time. The comment period for the proposals posted in 2007 and 2008 has closed. None of the revisions from the 2007-2008 sets of proposals will become effective until they first have been approved for use by the National Leader for Soil Survey Standards and then will appear in the eleventh edition of the Keys to Soil Taxonomy. The eleventh edition of the Keys is tentatively scheduled for publication and release in the fall of 2009. For more details on the status of individual proposals, please direct inquiries to Mr. Craig Ditzler, National Leader for Soil Survey Standards, at Craig.Ditzler@lin.usda.gov.
 

Keys to Soil Taxonomy, 10th Edition

Includes links to both Spanish and English versions of the Keys, along with historical editions.