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| General Listing |
Title of Listing: | | National Soil Geographic Database (NATSGO) |
Category: | | Maps/Geographic Data |
Subcategory: | | US Department of Agriculture-USDA, All Listings |
Date: | | |
Document #: | | |
Web Site: | | http://www.fgdc.gov/FGDP/National_Soil_Geographic_Database_(NATSGO).html |
Email: | | |
Abstract: | |
The soil boundaries of the National Soil Geographic Database (NATSGO) were formed from the major land resource area (MLRA) and land resource region (LRR) boundaries. The MLRA and LRR boundaries were developed from State general soil maps. The NATSGO map was digitized at a scale of 1:7,500,000. The digital data is designed to be used for national, regional, and multi-State resource appraisal, planning, and monitoring.
Digitizing is done by line segment (vector) format. The base map used is a 1970 Census Bureau State and county digital data base, Albers Equal Area projection. Map unit composition for NATSGO was determined by sampling done as part of the 1982 National Resources Inventory. Sample data were expanded for the MLRAs, with sample design being statistically significant to State parts of the MLRAs.
NATSGO is linked to a Soil Interpretations Record attribute data base through the NRI data base. The soil mapping units contain many components. Soil interpretative maps can be developed to reflect the percentage of the map unit having the queried characteristics. For example, two soil interpretations that can be made from the data bases are percentage of soils with less than 20 inches to bedrock and occurrence of hydric soils.
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Topics
Mapping/GIS, Soil Science
Additional Topics/Tags/Keywords
Soils, Subsurface, Land, Boundaries
Organization: | | US Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS) |
Address: | | National Cartography and Geospatial Center
PO Box 6567 | Phone: | Description | Number |
City: | | Fort Worth | | Toll Free | (800) 672-5559 |
State/Province/Territory: | | TX | 2. | | (817) 334-5559 |
Zip/Postal Code: | | 76115 | 3. | USDA General Information | (202) 720-8732 |
Country: | | United States | 4. | Fax: | (817) 334-5469 |
Branch Locations: | |
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