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Minnesota DNR Simplified SSURGO Soils

This page last updated: 2010-10-06 14:51:03.0
Metadata created using Minnesota Geographic Metadata Guidelines


Metadata Summary

Originator Minnesota DNR - Management Resources - MIS Unit
Abstract SSURGO Version 2 soils data is digital format Natural Resource Conservation Service (NRCS) county soil survey information. It essentially captures the familiar County Soil Survey (produced by NRCS, formally SCS), in GIS format. It includes a variety of information on the physical and taxonomic charateristics of mapped soil bodies, as well as an assortment of interpretive information related to soil suitability for a variety of applications. The database design is quite complex, and includes over twenty related tables in its full implementation. Users should consult formal NRCS documentation for guidelines in proper use of the data
Use Tips Consult the SSURGO User Guide at: http://www.ftw.nrcs.usda.gov/pdf/ssurgo_db.pdf. The problem with SSURGO is that a detailed understanding of a complex database design is necessary to make full use of the data. The user must recognize that each soil delineation may contain multiple components with their own sets of information. Understanding what is truly going on inside of a soils polygon requires the user to summarize the information for each component, preferably based on the relative proportion of each component within the mapping unit. Also the data are extremely dense. An average county runs approximately 60 Mb.
Browse Graphic View a sample of the data.
Time Period of Content Date 2009
Currentness Reference NRCS Website
Access Constraints Data are unrestricted with regards to access
Use Constraints The USDA provides the following additional language:The U.S. Department of Agriculture, Natural Resources Conservation Service, should be acknowledged as the data source in products derived from these data. This data set is not designed for use as a primary regulatory tool in permitting or citing decisions, but may be used as a reference source. This is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application. Federal, State, or local regulatory bodies are not to reassign to the Natural Resources Conservation Service any authority for the decisions that they make. The Natural Resources Conservation Service will not perform any evaluations of these maps for purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than at which they were originally mapped can cause misinterpretation of the data. If enlarged, maps do not show the small areas of contrasting soils that could have been shown at a larger scale. The depicted soil boundaries, interpretations, and analysis derived from them do not eliminate the need for on site sampling, testing, and detailed study of specific sites for intensive uses. Thus, these data and their interpretations are intended for planning purposes only. Digital data files are periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data.
Distributor Organization DNR-MIS
Ordering Instructions See Online Linkage or Distribution Contact
Online Linkage


Full Metadata
Minnesota DNR Simplified SSURGO Soils

Go to Section:
1. Identification Information
2. Data Quality Information
3. Spatial Data Organization Information
4. Spatial Reference Information
5. Entity and Attribute Information
6. Distribution Information
7. Metadata Reference Information

 
Section 1 Identification Information   Top of page
Originator Minnesota DNR - Management Resources - MIS Unit
Title Minnesota DNR Simplified SSURGO Soils
Abstract SSURGO Version 2 soils data is digital format Natural Resource Conservation Service (NRCS) county soil survey information. It essentially captures the familiar County Soil Survey (produced by NRCS, formally SCS), in GIS format. It includes a variety of information on the physical and taxonomic charateristics of mapped soil bodies, as well as an assortment of interpretive information related to soil suitability for a variety of applications. The database design is quite complex, and includes over twenty related tables in its full implementation. Users should consult formal NRCS documentation for guidelines in proper use of the data
Use Tips Consult the SSURGO User Guide at: http://www.ftw.nrcs.usda.gov/pdf/ssurgo_db.pdf. The problem with SSURGO is that a detailed understanding of a complex database design is necessary to make full use of the data. The user must recognize that each soil delineation may contain multiple components with their own sets of information. Understanding what is truly going on inside of a soils polygon requires the user to summarize the information for each component, preferably based on the relative proportion of each component within the mapping unit. Also the data are extremely dense. An average county runs approximately 60 Mb.
Purpose SSURGO Version 2 depicts information about the kinds and distribution of soils on the landscape. The soil map and data used in the SSURGO product were prepared by soil scientists as part of the National Cooperative Soil Survey.

This particular product combines the county soil surveys into a single file geodatabase. The primary feature class contains an attribute table with fields for 16 of the most commonly requested soil properties. This allows for easy thematic mapping of these soil properties.

The geodatabase also contains related tables and a set of relationship classes that allows for more detailed investigation of a particular soil map unit using the ArcMap info tool. Info tool results show up in the form of a tree that can be expanded to display the one-to-many relationship present between a soil map unit and the properties of the polygon. Finally, the attribute table also contains web links that connect to the NRCS website soil series description as well as the NRCS soil series extent map.

Time Period of Content Date 2009
Currentness Reference NRCS Website
Progress Complete
Maintenance and Update Frequency Bi-Yearly
Spatial Extent of Data Statewide
Bounding Coordinates -96.5
-89
49.5
43
Place Keywords Minnesota
Theme Keywords soils, soil suitability, agriculture, soil taxonomy, geoscientific Information
Theme Keyword Thesaurus None
Access Constraints Data are unrestricted with regards to access
Use Constraints The USDA provides the following additional language:The U.S. Department of Agriculture, Natural Resources Conservation Service, should be acknowledged as the data source in products derived from these data. This data set is not designed for use as a primary regulatory tool in permitting or citing decisions, but may be used as a reference source. This is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application. Federal, State, or local regulatory bodies are not to reassign to the Natural Resources Conservation Service any authority for the decisions that they make. The Natural Resources Conservation Service will not perform any evaluations of these maps for purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than at which they were originally mapped can cause misinterpretation of the data. If enlarged, maps do not show the small areas of contrasting soils that could have been shown at a larger scale. The depicted soil boundaries, interpretations, and analysis derived from them do not eliminate the need for on site sampling, testing, and detailed study of specific sites for intensive uses. Thus, these data and their interpretations are intended for planning purposes only. Digital data files are periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data.
Contact Person Information Sherry Buckley, GIS Specialist
Minnesota DNR - Management Resources - MIS Unit
1201 E Hwy 2
Grand Rapids, MN 55744
Phone: 218-999-7948
FAX: 218-327-4263
E-mail:
Browse Graphic View a sample of the data.
Browse Graphic File Description
Associated Data Sets

 
Section 2 Data Quality Information Top of full metadata Top of page
Attribute Accuracy
Logical Consistency Data are topologically correct using ArcMap-ArcInfo 9.3.1
Completeness Statewide excluding Koochiching, Pine, Crow Wing, Lake, Cook, and Northern St. Louis Counties.
Horizontal Positional Accuracy Source layer soil_ssurgov2_py3: The USDA provides the following horizontal accuracy report: The accuracy of these digital data is based upon their compilation to base maps that meet National Map Accuracy Standards at a scale of 1 inch equals 1,000 feet. The difference in positional accuracy between the soil boundaries and special soil features locations in the field and their digitized map locations is unknown. The locational accuracy of soil delineations on the ground varies with the transition between map units. For example, on long gently sloping landscapes the transition occurs gradually over many feet. Where landscapes change abruptly from steep to level, the transition will be very narrow. Soil delineation boundaries and special soil features generally were digitized within 0.01 inch of their locations on the digitizing source. The digital map elements are edge matched between data sets. The data along each quadrangle edge are matched against the data for the adjacent quadrangle. Edge locations generally do not deviate from centerline to centerline by more than 0.01 inch.
Vertical Positional Accuracy Source layer soil_ssurgov2_py3: Not Applicable
Lineage
Source Scale Denominator Source layer soil_ssurgov2_py3: 24000
 
Section 3 Spatial Data Organization Information Top of full metadata Top of page
Native Data Set Environment ArcGIS File Geodatabase
Geographic Reference for Tabular Data Soil Map Units
Spatial Object Type vector
Vendor Specific Object Types polygon
Tiling Scheme state
 
Section 4 Spatial Reference Information Top of full metadata Top of page
Horizontal Coordinate Scheme UTM
Ellipsoid GRS1980
Horizontal Datum NAD83
Horizontal Units meters
Distance Resolution Source layer soil_ssurgov2_py3: The USDA provides the following horizontal accuracy report: The accuracy of these digital data is based upon their compilation to base maps that meet National Map Accuracy Standards at a scale of 1 inch equals 1,000 feet. The difference in positional accuracy between the soil boundaries and special soil features locations in the field and their digitized map locations is unknown. The locational accuracy of soil delineations on the ground varies with the transition between map units. For example, on long gently sloping landscapes the transition occurs gradually over many feet. Where landscapes change abruptly from steep to level, the transition will be very narrow. Soil delineation boundaries and special soil features generally were digitized within 0.01 inch of their locations on the digitizing source. The digital map elements are edge matched between data sets. The data along each quadrangle edge are matched against the data for the adjacent quadrangle. Edge locations generally do not deviate from centerline to centerline by more than 0.01 inch.
Altitude Datum Not Applicable
Altitude Units Not Applicable
Depth Datum Not Applicable
Depth Units Not Applicable
Cell Width
Cell Height
Latitude Resolution
Longitude Resolution
UTM Zone Number 15
SPCS Zone Identifier
County Coordinate Zone Identifier
Coordinate Offsets or Adjustments Not Applicable
Map Projection Name Transverse Mercator
Map Projection Parameters Not Applicable
Other Coordinate System's Definition Not Applicable
 
Section 5 Entity and Attribute Information Top of full metadata Top of page
Entity and Attribute Overview
Entity and Attribute Detailed Citation
 
Section 6 Distribution Information Top of full metadata Top of page
Publisher Minnesota DNR - Management Resources - MIS Unit
Publication Date 2010-10-06 00:00:00.0
Contact Person Information Hal Watson
GIS Database Coordinator
DNR-MIS
500 Lafayette Road, Box 11
St. Paul, MN 55155-4011
Phone: (651) 259-5508
FAX: (651) 297-4946
E-mail:
Distributor's Data Set Identifier soil_ssurgov2_py3
Distribution Liability The Minnesota Department of Natural Resources makes no representation or warranties, express or implied, with respect to the reuse of data provided herewith, regardless of its format or the means of its transmission. There is no guarantee or representation to the user as to the accuracy, currency, suitability, or reliability of this data for any purpose. The user accepts the data as is, and assumes all risks associated with its use. By accepting this data, the user agrees not to transmit this data or provide access to it or any part of it to another party unless the user shall include with the data a copy of this disclaimer. The Minnesota Department of Natural Resources assumes no responsibility for actual or consequential damage incurred as a result of any user reliance on this data.
Transfer Format Name ArcGIS File Geodatabase
Transfer Format Version Number ESRI FGDB 9.3
Transfer Size 2579000
Ordering Instructions See Online Linkage or Distribution Contact
Online Linkage
 
Section 7 Metadata Reference Information Top of full metadata Top of page
Metadata Date 2010-10-06 14:51:03.0
Contact Person Information Sherry Buckley, GIS Specialist
Minnesota DNR - Management Resources - MIS Unit
1201 E Hwy 2
Grand Rapids, MN 55744
Phone: 218-999-7948
FAX: 218-327-4263
E-mail:
Metadata Standard Name Minnesota Geographic Metadata Guidelines
Metadata Standard Version 1.2
Metadata Standard Online Linkage http://www.gis.state.mn.us/stds/metadata.htm



This page last updated: 2010-10-06 14:51:03.0