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| General Listing |
Title of Listing: | | Soil Survey Geographic Database (SSURGO) |
Category: | | Maps/Geographic Data |
Subcategory: | | US Department of Agriculture-USDA, All Listings |
Date: | | |
Document #: | | |
Web Site: | | http://www.fgdc.gov/FGDP/Soil_Survey_Geographic_Database_(SSURGO).html |
Email: | | |
Abstract: | |
Field mapping methods using national standards are used to construct the soil maps in the Soil Survey Geographic Database (SSURGO). Mapping scales range from 1:12,000 to 1:31,680; SSURGO is the most detailed level of soil mapping done by the Soil Conservation Service (SCS). SSURGO digitizing duplicates the original soil survey maps. This level of mapping is designed for use by landowners, townships, and county natural resource planning and management. The user should be knowledgeable of soils data and their characteristics.
Digitizing is done by line segment (vector) format in accordance with SCS digitizing standards and specifications. The mapping bases used meet national map accuracy standards and are either orthophotoquads or 7.5-minute quadrangles. SSURGO data is collected and archived in 7.5-minute quadrangle units, and distributed as complete coverage for a county or area usually consisting of 10 or more quad units. Soil boundaries ending at quad neatlines are joined by computer to adjoining orthophotoquad maps to achieve an exact match.
SSURGO is linked to a Soil Interpretations Record attribute relational data base, which gives the proportionate extent of the component soils and their properties for each map unit. SSURGO contains one to three components. The Soil Interpretations Record data base includes over 25 soil, physical and chemical properties for approximately 18,000 soil series recognized in the United States. Information that can be queried from the data base includes available water capacity, soil reaction, salinity, flooding, water table, bedrock, and interpretations for septic tank limitations, engineering, cropland, woodland, and recreation development.
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Topics
Mapping/GIS, Soil Science
Additional Topics/Tags/Keywords
Soils, Subsurface
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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