- National Soil Data Access Facility - NRCS data and related information, including soil survey manuals, classifications, lists of published soil surveys (some online), general information about soils, and related links.
www.statlab.iastate.edu/soils/nsdaf
- Natural Resources Conservation Service Data Resources - NRCS distributes natural resources inventory, plants, and soils data to the public.
www.ftw.nrcs.usda.gov
- Natural Resources Conservation Service, NRCS - Formerly the U.S. Soil Conservation Service. NCRS program areas include soil survey, conservation assistance, farmland protection, grazing lands conservation, and watershed protection.
www.nrcs.usda.gov
- State of the Land - Provides data and analysis on land use, soil erosion and soil quality, water quality, wetlands, and other issues regarding the conservation and use of natural resources.
www.nhq.nrcs.usda.gov/land/home.html
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