Skip

NSSH Part 647

Soil Map Development

Subpart A – General Information

647.0  Definition and Purpose

Soil map development includes activities related to the preparation and completion of maps for soil survey. The purpose is to provide current and accurate soil maps (digital and analog) and related products to users. Three functional areas describe the major cartographic procedures: imagery acquisition, digital data capture, and digital map finishing. A glossary of terms used in soil map development is present in Subpart B, Exhibits, Section 647.15.

  1. Imagery Acquisition.—Field mapping for soil survey is performed on an imagery base. Digital soil survey development and publication products utilize digital imagery. A memorandum of understanding (MOU) initiates the acquisition of imagery for mapping and publication. Aerial photography can still be used in completing initial soil survey projects. Hard copy imagery can also be used as a tool in association with digital imagery.
     
  2. Digital Data Capture.—Field mapping is performed using electronic media and heads-up (on-screen) digitizing as much as possible. Mapping on hard copy aerial photography, subsequently compiling to orthophotography, and hand- or scan-digitizing are avoided if at all possible. This part establishes the standards and specifications for the soil survey map component of the Soil Survey Geographic (SSURGO) database.
     
  3. Digital Map Finishing and Print-on-Demand Maps.—Digital map finishing is the addition of data layers (i.e., transportation, hydrography, and cadastral) to the soils data to generate a print-ready file.
     

647.1  Policy and Responsibilities

  1. Policy

    1. An approved and signed MOU for the soil survey area must be on file. Part 606, Exhibit 606-1, of this handbook, provides additional information on the MOU.
       
    2. Soil survey products from new and updated soil surveys are expected to be at 1:24,000 or 1:12,000 scale.
       
    3. Soil surveys use the definitions and applications of soil survey features on Form NRCS–SOI–37A from Part 627, Exhibit 627-5, of this handbook. Definitions of ad hoc features are the responsibility of the major land resource area (MLRA) soil survey regional office (MO).
       
    4. All new soil surveys must be digitally captured, certified, and maintained in the Soil Data Warehouse. All updated soil surveys will be maintained in the Soil Data Warehouse.
       
    5. New and updated soil survey publications utilize digital map finishing. The digital publication format is a 3.75- or 7.5-minute quadrangle.
       
  2. Responsibilities

    1. The Federal Geographic Data Committee (FGDC) and the Office of Management and Budget (OMB) are formally assigned the responsibility for national coordination of digital soils data to NRCS. See the OMB Circular A-16 for more information.
       
    2. NRCS has the Federal responsibility for the National Cooperative Soil Survey and Federal leadership for collecting, storing, maintaining, and distributing soil information on privately owned lands in the United States. These activities include:
      1. Acquiring base imagery for soil survey mapping.
      2. Performing the quality assurance of soil survey maps.
      3. Preparing data for publication.

      NRCS also has the lead Federal responsibility in collecting, archiving, and distributing the SSURGO database.

    3. The National Headquarters Office provides overall direction, policy, guidance, and leadership for the National Cooperative Soil Survey within NRCS. See Part 608, Section 608.1 of this handbook for more detailed information on the responsibilities of the National Headquarters Office and the other NRCS offices mentioned in this section.
       
    4. The National Soil Survey Center is responsible for national standards, databases, training, research, and analysis.
       
    5. The MO is responsible for providing leadership in the production and quality assurance of soil survey information.
       
    6. The state office is responsible for certifying and posting official detailed soil survey information in the Soil Data Mart.
       
    7. The MLRA soil survey office is responsible for conducting quality control of all soil survey activities in the assigned portions of the MLRA soil survey area.
       
    8. The National Geospatial Management Center (NGMC) is responsible for—
      1. Providing technical assistance to States, MOs, and digitizing units in spatial and metadata development to meet SSURGO specifications.
         
      2. Assisting digitizing units with error resolutions to successfully import spatial data to the staging server.
         
      3. Assisting States with resolving problems related to committing SSURGO datasets to the Soil Data Warehouse.
         
      4. Communicating changes/updates and enhancements to SSURGO standards, certification routines, and procedures.
         
      5. Performing a 10 percent quality review of SSURGO materials (spatial and metadata), documenting SSURGO spatial and tabular discrepancies, and forwarding findings to digitizing units, MOs, and other digital capture entities.
         
      6. Developing and updating data capture techniques and standards.
         
      7. Coordinating and implementing software updates to reflect changes in standards.
         
      8. Providing digital map finishing instructions and procedures to state offices conducting digital map finishing, performing quality assurance review of digital map finishing materials, archiving digital map finishing data, and providing technical assistance.
         
    9. The digitizing units are responsible for—
      1. Coordinating data capture and soil business activities with States and MOs to ensure an orderly flow of work for all soil surveys which are to be processed by the unit.
         
      2. Performing certification review of submitted materials.
         
      3. Notifying the MO of any problems discovered during certification review that require action by the MO or States prior to certification.
         
      4. Digitally capturing compiled map materials, including scanning soil lines, labeling, edge matching, and digitizing linear and point features.
         
      5. Performing quality control of final digital data, including spatial and metadata.
         
      6. Coordinating with the MO to obtain a SSURGO certification letter (see Subpart B, Exhibits, Section 647.10) from the state conservationist of the State whose survey is digitized.
         
      7. Exporting the spatial data to the staging server.
         
    10. The digital map finishing sites (housed at state offices and the NGMC) are responsible for—
      1. Performing soil survey digital map finishing activities and submitting final map products to the NGMC for archiving.
         
      2. Coordinating digital map finishing activities with States and MOs to ensure the orderly flow of work for all digital map finishing projects.
         
      3. Performing quality control with 100 percent edit.
         

647.2  Imagery

Imagery should be the best available for the soil survey project that meets the National Standard for Spatial Data Accuracy.

  1. Initiation of Imagery Acquisition
    1. Acquisition of imagery for mapping and publication of soil surveys begins before the fieldwork. It starts with an MOU between NRCS and State and local governments, universities, or other cooperating entities. For more information about the MOU, see part 606 of this handbook. Responsibilities and intentions towards data capture and map finishing are part of a soil survey area MOU or an amendment to an MOU.
       
    2. To acquire imagery, use the online NGMC Ordering System (NGMCOS) available at this Web address: http://www.ftw.nrcs.usda.gov/ncgcos. Imagery and the publication of soil survey products are available through the NGMCOS.
       
  2. Imagery Acquisition Assistance.—The NGMC assists States in acquiring aerial photography and orthophotography. This assistance is available whether funding is from the States or by the Soil Survey Division. The NGMC will—
    1. Provide information on imagery availability.
    2. Order imagery.
    3. Inspect imagery to ensure quality and coverage.
       
  3. Archiving
    1. Aerial Photography.—The NGMC does not archive aerial photography. The Federal Records Center, Fort Worth, Texas, archives the designated official field sheets after the survey is published.
       
    2. Orthophotography.—The NGMC retains copies of all orthophotography acquired for use in the National Cooperative Soil Survey program. Reproductions of archived digital orthophotography are available upon request through the NGMC online ordering system available at the Web address shown in section 647.2 (1) (ii).
       

647.3  SSURGO Characteristics

The database consists of—

  1. Soils mapping using mobile devices, digital orthoimagery, and heads-up (on-screen) digitizing as much as possible to promote efficiency of data capture.
     
  2. Mapping on 3.75-minute or 7.5-minute digital orthoimagery quadrangles or compiling onto one of these bases before or during digitizing if (1) above is not possible.
     
  3. Mapping at a 1:12,000 or 1:24,000 scale and other scales in limited locations.
     
  4. An approved and signed classification and correlation document and amendments or an approved legend in the National Soil Information System (NASIS) for a progressive soil survey.
     
  5. Captured or converted data in a geographic coordinate reference system, decimal degrees map units, and a North American Datum of 1983 (NAD 83) with a Geodetic Reference System of 1980 (GRS 80) spheroid.
     
  6. Georeferenced digital spatial data, tabular data, and metadata.
     
  7. Spatial data stored in a vector data structure.
     
  8. Archiving in a survey area format.
     
  9. Maintenance of the digitizing standards and specifications of NRCS.
     

647.4  Data Capture Specifications

  1. Base Map Characteristics

    1. Maps To Be Used.—Imagery should be the best available for the soil survey project that meets the National Standard for Spatial Data Accuracy.
       
    2. Scale.—The primary standard is a 1:12,000 or 1:24,000 scale base.
       
    3. Reference System.—The horizontal control is the NAD 83 or World Geodetic System 1984 (WGS 84) and is determined by the imagery base.
       
  2. Features to be Captured.—Area soil survey features and linear and point soil survey features are digitized as three separate layers.

    1. Layer 1

      Examples of area features are soil and water areas. These features are composed of soil boundary lines or other boundary lines, such as a double line stream or limit of soil survey, that form polygons and occupy area.

       
    2. Layer 2
      1. Examples of soil line segments are narrow elongated riparian areas.
      2. Examples of soil point features are small circular riparian areas.
         
    3. Layer 3
      1. Examples of special linear features are escarpments and gullies.
         
      2. Examples of special point features are landform features, miscellaneous surface features, and ad hoc features (sometimes known as spot symbols). Wet spots, pits, and sinkholes are specific examples of these features.
         
      3. Both linear and point special features represent areas that are too small to be digitized as polygons (area features smaller than 0.5 cm in diameter).
         
  3. Data Capture.—The following standards and specifications apply to soil surveys at scales of 1:12,000 to 1:24,000:

    1. Data Capture by Heads-Up (On-Screen) Digitizing.—Data capture of all soil survey features (i.e., soil and water boundaries and linear and point features) is performed by heads-up digitizing. Heads-up digitizing uses a data capture device, such as a mouse or stylus, to trace or draw on digital imagery.
       
    2. Data Capture by Manual Digitizing
      1. Each soil survey feature (i.e., soil and water boundaries and linear and point features) is digitized within a 0.01-inch (0.254-mm) line width of the source document and the centerline of the boundary must be followed.
         
      2. Geographic control is established using the four corner coordinate values of the 7.5-minute quadrangle or 3.75-minute quadrangle.
         
    3. Collective Data Capture Specifications.—The following specifications apply to both heads-up and manual data capture:
      1. All beginning and ending points of each digitized line at a common intersecting point (node) must be connected with another soil boundary, water boundary, or limit-of-soil-survey boundary.
         
      2. Average vertex density (distance between vertices) for soil and water boundaries should be greater than 15 meters.
         
      3. Straight segments of soil and water boundaries (i.e., survey area boundaries and urban map units) should be represented by no more than two vertices, one at each end of the segment.
         
      4. All “islands” must be digitized as a continuous line segment with only a beginning and ending node.
         
      5. Each boundary must be represented with no greater number of coordinate pair vertices than is necessary to record the boundaries.
         
      6. In areas of dense soil and water boundaries, each boundary must have a minimum separation of 1/16 inch (19 ground meters at 1:12,000 or 38 ground meters at 1:24,000) or more at output scale for clarity.
         
      7. For soil and water boundary editing, zoom in no farther than about twice the publication scale:
        • 1:12,000 for a 1:24,000 scale survey area.
        • 1:6,000 for a 1:12,000 scale survey area.
        • The practical limit of zooming in to edit boundaries is a 1:3,000 scale.
    4. Spatial Reference.—The coordinate reference system required for all coordinate data includes:
      1. A ground-based system and projection.
         
      2. Horizontal datum, either the NAD 83 that is based upon the GRS 80 spheroid or the WGS 84 that is based on the WGS 84 spheroid.

      No x_ or y_ coordinate shifts (offsets) are permitted.

    5. Spatial Format.—The format is—
      1. A geodatabase.
         
      2. Vector structures (i.e., location of lines, points, and area boundaries) that are represented as x, y coordinate pairs.
         
  4. Legends

    1. Area Features
      1. Use the soil map symbols in the legend in the classification and correlation document and amendments.
         
      2. Permanent water and miscellaneous water will conform to soil map unit labels (i.e., alpha, numeric, or alphanumeric). The use of symbols W and M-W is not required.

    The table below shows a hypothetical example of an approved correlation legend which uses connotative, alphabetic map unit labels as the publication symbols. Connotative map unit labels are optional regardless of what kind of symbol is chosen.

    Publication Symbol Approved Map Unit Name
    ApB Alpha silt loam, 1 to 3 percent slopes
    Ba Barney loam, very stony
    Be Beta silt loam
    Go Gomer clay, frequently flooded
    Md Madras loamy fine sand
    W Water
    We Wehadkee fine sandy loam

    1. Linear and Point Soil Map Unit Features.—Use the soil map symbols in the legend in the classification and correlation documents and amendments.
       
    2. Linear and Point Special Features.—Digitize the soil survey standard and features identified in this handbook in Part 627, Exhibit 627-5, Feature and Symbol Legend for Soil Survey, NRCS–SOI–37A, if they are identified in the classification and correlation document and amendments. Ad hoc features follow standard landform and miscellaneous surface features on the legend.

    The table below shows an example of approved features with the descriptive labels.

    Feature Label Feature Name
    CLA Clay spot
    GPI Gravel pit
    ROC Rock outcrop
    SLP Short, steep slope
    STV Very stony spot
    WET Wet spot
    BOG Areas of acid organics

     

  5. Labeling

    1. Descriptive Labels.—Label each feature with a descriptive label. The descriptive labels are identical to the map unit symbols in the approved soil classification and correlation document and amendments. They include symbols for map unit delineations, special features, and ad hoc features.
       
    2. Label Position.—For area features, position the coordinate point for the map unit label at or near the centroid (i.e., geometric center) of the polygon. Move the coordinate point into the area if the centroid falls outside of the polygon. Centrally locate the coordinate point on the feature.
       
    3. Special Labels.—Special labels are listed in the map unit table in NASIS so that a map unit key (mukey) can be generated for them. As such, they will be included in the map unit legend.
      1. Label areas not yet mapped or digitized as part of a progressive survey NOTCOM, for not completed.
         
      2. Label large concrete or riprap-covered dams DAM and large levees LEVEE when unassigned.
         
      3. Label water areas (ponds and lakes) with an appropriate map unit symbol. They should not be unlabeled.
         
      4. Label areas that are unmapped because access was denied with any appropriate symbol. See Part 608, Section 608.03 of this handbook for more information on the recommended map unit name for such areas.
         
      5. If the assigned map unit symbols are numeric, then only areas not yet completed (i.e., labeled NOTCOM) would lack a numeric symbol.
         
  6. Spatial Data Files Naming Convention.—These file names are internal. They are utilized by ArcGIS® and ArcInfo® quality assurance processes. They are not the file names that are distributed by the Soil Data Mart that meet the Standard for Geospatial Dataset File Naming.

    The naming convention for SSURGO spatial files is the two-letter State FIPS code followed by a three-digit soil survey area number. An example of the soil polygon coverage name for Henry County, Virginia, is VA089_a. Each geospatial layer has its own designation.

    a – soil polygon
    b – soil survey boundary
    c – linear soil map unit
    d – point soil map unit
    l – linear special feature
    p – point special feature
    q – quadrangle
     
  7. Tabular Attribute Data

    1. Current and accurate tabular data are present in the soil classification and correlation document and amendments, and they are identical to the data downloaded for use in the Field Office Technical Guide. The reliability of the individual data elements and tables are to be addressed in the metadata file if necessary.
       
    2. The exportcertdate column in the distlegendmd Map Unit Record table is defined as the mm/dd/yyyy that the data for the soil survey area was certified by the MO as edited and available for public use. This column must be populated when submitting the tabular data. This is essential for dating the tabular data, which are periodically updated.
      1. Map Unit Record Database.—Each map unit symbol contained in the spatial data must have a matching symbol in NASIS. It is acceptable for extra symbols to be in the NASIS data that are not in the spatial data.
         
      2. Special Features.—Prepare and archive a soil survey features file for the SSURGO database. The name of the file will be “feature.” The format is a variable record length ASCII text file. The first row contains the name of each column, feat_label, feat_name, and feat_desc. The second row contains at least one dash underneath each column name. Tabs separate the column names and dashes. A return character is at the end of each of these rows. Delimit each subsequent row by a return character and form a record in the table. A row consists of tab-delimited columns. Each row has the same number of columns as the file header (first two rows). The file contains a descriptive label, feature name, and definition for each linear and point soil survey feature and ad hoc feature in the legend.
         
  8. Metadata

    1. The SSURGO product is a combination of both spatial and tabular data. FGDC-compliant metadata exists for the spatial and tabular data. Both static and dynamic metadata exist for the tabular component.
       
    2. Metadata provide information about the content, quality, condition, and related characteristics of data; information about the SSURGO database holdings to data catalogues, clearinghouses, and brokerages; and information needed to process and interpret SSURGO data received through a transfer either by media or the Internet.
       
    3. Submit metadata with the SSURGO spatial data for archiving in the Soil Data Warehouse. The template in Subpart B, Exhibits, Section 647.16 is used to create metadata. The name of the metadata file in the SSURGO database is the area symbol for the soil survey area to which the dataset applies. The extension will be “met.” For example, va089.met is the name of the metadata file for Henry County, Virginia.
       
  9. Quality Control

    1. Quality control of soil surveys and their digital products is the responsibility of the office doing the work. The MO provides quality assurance for the soil survey process.
       
    2. The digitizing units perform quality control on the digital survey.
       
  10. Quality Assurance

    1. The MO is responsible for the overall technical accuracy of soil surveys.
       
    2. The NGMC provides assistance to the MO on quality assurance review of digital soil surveys.
       

647.5  Archiving

The certified or updated soil survey information is permanently archived in the Soil Data Warehouse and then utilized by a variety of applications. The following conditions must be met for data to be uploaded to the Staging Server and then committed by the state soil scientist to the Soil Data Warehouse:

  1. The digitizing units must have a signed certification letter for surveys that have not previously been archived in the Soil Data Warehouse.
     
  2. The data must be converted to an ArcInfo coverage format.
     
  3. The reference system must be projected to (if needed) the geographic coordinate system, NAD 83 datum, GRS 80 spheroid, and decimal degree map units.
     
  4. A soil map unit polygon coverage and the soil survey boundary coverage must be present and correctly named.
     
  5. A metadata file, correctly named, must be present.
     
  6. The data must be zipped.
     

647.6  Digital Map Finishing and Print-on-Demand Maps

  1. General

    1. The Digital Map Finishing and Print-on-Demand Maps (DMFPODM) process replaces the previous digital map finishing method. The new DMFPODM process uses ArcMap Version 9.3.1 (or later) and Maplex for ArcGIS®. The Digital Map Finishing and Print-on-Demand Maps User Guide provides instruction for the new process.
      1. Users must adhere to all specifications cited in Subpart B, Exhibits, Section 647.12, Digital Map Finishing and Print-On-Demand Maps Specifications, and the user guide.
         
      2. Contact the NGMC for a copy of the user guide.
         
      3. See the overview of the Digital Map Finishing and Print-on-Demand Maps process in Subpart B, Exhibits, Section 647.11, Digital Map Finishing and Print-on-Demand Maps Flowchart.
         
    2. States are responsible for performing digital map finishing. The NGMC provides technical assistance for digital map finishing. The NGMC performs a limited number of digital map finishing projects upon request from the state soil survey office.
       
    3. Form NRCS–SOI–37A (see Part 627, Exhibit 627-5 of this handbook) in the classification and correlation document identifies the features that will appear in the soil survey publication. Only map finish the items indicated on this approved form.
       
  2. Quality Control and Quality Assurance

    The MO and state office are responsible for digital map finishing and its quality control and assurance (data accuracy and DMFPODM specifications are in Subpart B, Exhibits, Section 647.12). State offices may agree to share this role. The NGMC provides DMF technical assistance to the MOs and state offices. The NGMC also ensures adherence to the DMFPODM specifications.

    1. The state office is responsible for developing DMFPODM products and ensuring a 100 percent quality control edit before the PDFs are created. A digital map finishing checklist is provided in Subpart B, Exhibits, Section 647.13.
       
    2. The States will provide three PDFs (one sheet should include the limit of soil survey) to the NGMC to ensure adherence to the DMFPODM specifications. The NGMC will notify the State and MO of their findings.
       
    3. The PDFs created by the State are sent to the MO for a 100 percent quality assurance review. If corrections are warranted, the PDFs are returned to the State. When the corrections are made, the final PDFs are returned to the MO for certification. See Subpart B, Exhibits, Section 647.14, Digital Map Finishing Certification.
       
    4. The MO leader signs the digital map finishing certification letter and ships the digital data files (file geodatabase, .mxd, .eps, and .pdf files) to the NGMC for archiving.
       
  3. How Data Are Obtained

    DMFPODM data can be obtained by downloading digital files from the NRCS Geospatial Data Gateway. The Digital Map Finishing and Print-on-Demand Maps User Guide contains additional information for attaining data.
     
  4. Data Themes

    Data themes available for the DMFPODM process are SSURGO, Dynamap (TeleAtlas), National Hydro Dataset, Quad Index, Public Land Survey System (PLSS), Geographic Names, and Digital Raster Graphics (DRG). The National Agricultural Imagery Program (NAIP) imagery and ShadedRelief (Hillshade) imagery are captured from the NGMC Image Server. Other digital imagery may be used if FGDC standards are met.

    Files provided by the NGMC (administrative privileges will be required to load fonts).

    1. Fonts
      1. NRCS-adhoc.TTF
      2. NRCSP___.TTF
      3. NRCSS___.TTF

      The DMFPODM specifications (see Subpart B, Exhibits, Section 647.12) prescribe font style and sizes for specific map elements in order to maintain uniformity for all soil survey maps. Specific fonts (Arial and Times New Roman) are used for soil labels, place names, culture/hydrographic feature names, margin information, etc.

    2. Style Sheet (NRCS SSURGO.style)

      To maintain consistency for map elements across map sheets undergoing digital map finishing, a style sheet is used. Stored in the ArcMap— DMF tools folder, the style sheet employed in the DMFPODM method for soil surveys is named NRCS SSURGO.style. The style sheet ensures that cultural and hydrographic point and line features are rendered the same way on different soil surveys.

       
    3. Templates

      NGMC templates include the dmf_template_12k.mxt (quadrangle template), dmf_template_24k.mxt (quadrangle template), and dmf_template_63.mxt (1:63,360 quadrangle template). To minimize user input and create a consistent map finishing product, the templates must be used for the DMFPODM process. The digital map finishing templates include the following information:

      (Note: All measurements cited are approximate. Do not adjust these elements on the templates.)
      1. Agency Name.—The agency name is located in the upper left corner of each map, 0.5 inch below the map margin. Indicate as:

        UNITED STATES
        DEPARTMENT OF AGRICULTURE
        NATURAL RESOURCES CONSERVATION SERVICE

         
      2. Soil Survey Area Name.—The soil survey area name is located in the upper right corner of each map, 0.7 inch above the map neat line and 0.5 inch below the map margin. The soil survey area name is also located in the lower right corner of each map, 0.5 inch below the map neat line and 2.1 inches above the map margin.
         
      3. Quadrangle Name.—The U.S. Geological Survey (USGS) quadrangle name is located in the upper right corner of the map, 0.5 inch above the map neat line and 0.7 inch below the map margin.
         
      4. Quadrangle Sheet Number.—The map sheet number is located in the upper right corner of the map, 1 inch below the map neat line and 1.7 inches above the map margin.
         
      5. Bar Scale Information.—Three separate bar scales are located in the lower center of each map. The first bar scale represents the mile increment, about 1 inch below the map neat line. The second bar scale represents the kilometer increment, 0.5 inch below the first scale. The third bar scale represents the foot increment, 0.5 inch below the second scale.
         
      6. Map Scale Information.—The map scale is located in the lower center of the map below the bar scales. Most scales are 1:12,000 and 1:24,000. Other scales may be used in special circumstances.
         
      7. Source Note Information.—Each map requires a source note in the lower left corner of the map, 0.2 inch below the map neat line. The lower limit must not exceed 2.2 inches below the map neat line (0.5 inch above the map margin). The note references contributors to the soil survey program and identifies the imagery date.
        • This soil survey map was compiled by the U.S. Department of Agriculture, Natural Resources Conservation Service.
        • Aerial imagery from the National Agriculture Imagery Program (NAIP), 2008 to present.
        • National Hydrography Dataset (NHD) and cultural features derived from data provided by the Department of the Interior-USGS.
        • North American Datum of 1983 (NAD 83), Universal Transverse Mercator (UTM) coordinate system.
      8. Adjoining Sheet Names.—The “Joins Sheet” notes are used to identify adjacent quadrangle names. Eight adjoining sheet names are prepositioned at the appropriate locations on the template.
         
      9. State Coordinate Ticks and Values (optional).—Position the tick values in 1,000-meter increments. Orient the values horizontally.
         
      10. Geographic Coordinate Ticks and Values.—The geographic coordinate values are indicated as latitude and longitude in the degree, minute, second format in each map corner. The coordinate values are 15-minute, 7.5-minute, and 3.75-minute.
         
      11. North Arrow.—A north arrow is displayed between the source note and scale bar, 5.5 inches from the left side of the map neat line.
         
      12. Soil Survey Area Information.—The State and county information is located in the lower right corner of each map below the map neat line. The State and county information is also located in the upper right corner of the map.
         
      13. Map Projection Information.—All map projection information is indicated in the source note. The map projection includes the UTM coordinate system, zone, and datum. The datum is the same for all maps within a survey area.
         
      14. Index Map-Quadrangle Index.—Position the index map-quadrangle index at the bottom of the map and center between the scale bar and the soil survey area name.
         
  5. Digital Map Finishing and Print-on-Demand Maps Specifications

    1. Base map requirements for digital map finishing are the same as those for SSURGO digitizing. See Section 647.4 for these requirements. The MO reviews and certifies all digital map finishing.
       
    2. Acquire digital data layers from the Geospatial Data Gateway and other Federal geospatial data portals as needed and determined by the state soil scientist and the MOU. Create a file geodatabase and import all digital data themes needed for digital map finishing.
       
    3. All digital map finishing work must meet the proper density, line widths, symbol, font styles, and sizes as stated in the Digital Map Finishing and Print-on-Demand Maps User Guide and in Subpart B, Exhibits, Section 647.12, Digital Map Finishing and Print-on-Demand Maps Specifications.
       
  6. Data Files

    1. Culture.—Cultural information including political and administrative boundaries, transportation, buildings, structures, and public land survey are displayed in black on the publication maps.
       
    2. Priority.—When two or more boundaries fall in the same location, the table below shows the priority for symbolizing these features.

      Priority Feature
      1 Road
      2 National
      3 State
      4 County or parish
      5 Reservation (national or State forest or park)
      6 Limit of soil survey
      7 Minor civil division
      8 Public land survey system
      9 Neat line
       
    3. Soils.—Soil information includes the soil delineations, soil labels, and standard landform and miscellaneous surface features certified as SSURGO.
      1. Soil Polygons.—Soil delineations include all linear and point soil delineations as well as soil and miscellaneous areas, such as gravel pit areas; water areas; miscellaneous water areas, which are further identified as sewage lagoons and filtration ponds; and double line streams and canals. Note: Use the same color (RGB) for all polygons and labels throughout the survey area.
         
      2. Soil Labels.—The digital map finishing application places one soil label in each soil polygon, horizontally and near the geometric center of the soil delineation. Additional labels can be added as needed.
        • Ensure soil labels do not touch or extend across soil boundaries or other map features.
        • Soil labels that do not fit horizontally within the soil delineation will require rotating or leadering.
        • Where the soil polygon is too small to contain a label, place the label outside of the delineation and use a leader extending into the polygon.
          • A leader normally should not cross more than one soil line except where unavoidable.
          • The ends of the leader must not touch the soil label or any other map element within the soil area.
        • Soil polygons longer than approximately 3 inches in any direction may require more than one soil label.
        • In elongated or narrow areas, place soil labels as needed to maximize clarity.
        • If using a hydro layer with blue line symbols, it is permissible for the soil label to overlap the line feature to avoid using a leader.
    4. Hydrography.—Hydrographic information includes water bodies, streams, ditches, flood pool boundaries, springs, and wells. Streams less than 0.5 inch in length are not shown except where connected to map neat lines that extend onto the adjacent map.

      Hydrographic Features:
      1. Streams.—stream names. Place double line stream names between shores where overprinting will not occur. Place type for linear features on the upper side aligned with the general direction of the feature. Place names on the same side and align to fit the feature. Some features may require more than one label or different sized labels. Place word components in uncluttered areas wherever possible.
         
      2. Other Hydrographic Features.—Label other hydrographic features, if needed; for example, ponds, lakes, and reservoirs.
         
    5. Annotation.—Annotation includes soil labels and the proper names of cultural, hydrographic, and hypsographic features. The USGS digital raster graphics files (DRGs) are used for guidance in determining the names and locations of all annotation, excluding the placement of soil labels. Position annotation to read from left to right or from bottom to top (except where a feature is at an angle of more than 90 degrees, causing annotation to appear upside down). Align with the general shape of the feature it represents, unless specified to be placed horizontally. Where letter spacing is preferred for effective presentation of feature names, space the letters proportionately across the feature area. Avoid placing annotation over other features wherever possible.
      1. Public Land Survey System (PLSS).—Label township and range identifications along the soil survey area boundary or outside the map neat line. Identify all land division sections within the interior of all maps. Adjust the section numbers to avoid overprinting other map elements.
         
      2. Boundary Identifications
        Soil Survey Boundaries.—Identify all national, State, county/parish, MLRA, and limit-of-soil-survey boundaries, and place the labels parallel to the boundary line. The soil survey area boundary options are county/parish boundary, MLRA boundary, State/national boundary, and limit of soil survey.
        • Identify limit-of-soil-survey boundaries only when they do not correspond with national, State, county/parish, or MLRA boundaries. Label them “LIMIT OF SOIL SURVEY.”
        • If the proper name of a reservation, forest, or national or State park does not appear in the interior of the map, identify the boundary with its proper name, such as “ROSEBUD INDIAN RESERVATION.”
        • For surveys that coincide with counties/parishes or MLRAs, label names of adjacent counties/parishes or MLRAs along the outside edge of the soil survey boundary parallel to the boundary. Where the survey joins another State or MLRA, label the adjacent State or MLRA name along with the adjacent county/parish or MLRA names.
        • Where the survey adjoins another nation, label the national name and its provincial name along the national boundary.
        • For survey areas that contain more than one county/parish or portions of counties/parishes and have county/parish (or State) boundaries within a survey area, label counties/parishes and States as they occur on each side of the State boundaries. Label more than once where boundaries are meandering and/or difficult to follow.

        Political/Administrative Boundaries.—Label text for national or State parks, forests, and reservations parallel to the boundary line symbol.

      3. Transportation

        Road Emblems.—Identify interstate, Federal, State, and other roads by placing route emblems as needed on the map. Place emblems horizontally. Place the emblem directly on the feature. Where roads continue on adjoining maps, place the emblems close to the map neat line. Identify county highways and other roads as needed.

        Railroads.—Place the name directly on the feature. Abbreviate the names as needed.

         
      4. Geographic Names Information System (GNIS) – Populated Places.—Label cities, towns, and other populated areas horizontally. Annotation sizes should be used to distinguish priorities.
         
      5. GNIS – Non-Populated Places

        Airports and Schools.—Label airports and schools horizontally.

        Churches and Cemeteries.—Label churches and cemeteries horizontally.

         
      6. Hypsographic Features.—These include mountain ranges, ridges, peaks, knobs, buttes, hills, canyons, bluffs, plateaus, sinks, summits, gaps, mesas, plains, prairies, passes, reefs, valleys, hollows, meadows, gulches, deserts, washes, faults, escarpments, islands, peninsulas, arroyos, capes, points, landings, beaches, and basins.
         
  7. Spatial Data Format.—The format is—

    1. A geodatabase.
       
    2. Vector structures (i.e., location of lines, points, and area boundaries) that are represented as x, y coordinate pairs.
       
  8. Encapsulated Postscript Files

    The encapsulated postscript files will serve as master files for each of the map sheets. The average file size for a 3.75-minute quarter quadrangle is 100 megabytes. A 7.5-minute full quadrangle will average about 300 megabytes in size. Adobe® Acrobat® PDFs will be generated from this file for Web delivery, CD production, or printing.
     
  9. Delivery Formats

    1. Zip the primary DMF folder (State soil survey area id – STSSAID). This folder should include the .mxd, .eps, and .pdf files and the file geodatabase. The data files will be delivered to the NGMC for archiving.
       
    2. The NGMC delivery site is:
      \\txfortworts720\shared\ncgc_data_checkouts\incoming\DMF

       
    3. The DMFPODM files will be retrieved from the incoming site and stored on DVDs for long-term storage.

Esri, ArcGIS, ArcInfo, ArcMap, and Maplex for ArcGIS are trademarks, registered trademarks, or service marks of ESRI in the United States, the European Community, or certain other jurisdictions.

Adobe and Acrobat are either registered trademarks or trademarks of Adobe Systems Incorporated in the United States and/or other countries.

 

Subpart B – Exhibits

647.10  Soil Survey Geographic Certification

EXAMPLE – Modify to fit the survey.

SPATIAL DATA

  1. Digitizing meets the NRCS standards and specifications as described in Section 647.4 of the National Soil Survey Handbook (NSSH).
     
  2. Quality control included a ____________________ (100% edit by MLRA soil survey office, for example).
     
  3. Quality assurance included ______________________________________________________________________ _______________________________________________________[Edits by the MLRA regional office and by the National Geospatial Management Center (NGMC), for example].
     
  4. Soil and survey boundaries are digitized within a ________[0.01-inch (0.254 mm), for example] line width of the published or revised soil survey.
     
  5. Where a soil area boundary line intersects a quadrangle boundary, the line matches the line in the adjoining quadrangle within 0.01 inch (0.254 mm) measured centerline to centerline.
     
  6. Map data are stored in a _________________(vector, for example) format.
     
  7. Map data have been uploaded to the Soil Data Warehouse for archiving.
     

ATTRIBUTE DATA

  1. Database tables are current and accurate.
     
  2. Database tables have been sent to the NGMC for archiving.
     

METADATA

The metadata template has been completed and uploaded to the Soil Data Warehouse for archiving.


I certify that the data have passed a 100 percent State edit.

___________________________________________________________________________________________
State Soil Scientist                                                                                                             Date

___________________________________________________________________________________________
MLRA Regional Office Leader  
                                                                                             Date


I certify that the data meet all of the above certification specifications and are ready for archiving and distribution.

___________________________________________________________________________________________
State Conservationist                                                                                                        Date

 

647.11  Digital Map Finishing and Print-on-Demand Maps Flowchart

Flowchart for Digital Map Finishing and Print-on-Demand Maps

 














































647.12  Digital Map Finishing and Print-on-Demand Maps Specifications

The new Digital Map Finishing and Print-On-Demand Maps (DMF–PODM) process uses ArcMap— Version 9.3.1 with the Maplex for ArcGIS® extension.

(Note: All measurements cited are approximate. Do not adjust these elements on the templates.)

DMFPODM Template

Agency Name

Location: Upper left corner of map, 0.5 inch below map margin.
Text: color = black (R–0, G–0, B–0); font size = 10; font = Times New Roman (uppercase)

Soil Survey Area Name

Location: Upper right corner of map, 0.7 inch above map neat line and 0.5 inch below map margin. Also located in lower right corner of map, 0.5 inch below map neat line and 2.1 inches above map margin.
Text: color = black (R–0, G–0, B–0); font size = 10; font = Times New Roman (uppercase)

Quadrangle Name

Location: Upper right corner of map, 0.5 inch above map neat line and 0.7 inch below map margin.
Text: color = black (R–0, G–0, B–0); font size = 10; font = Times New Roman (uppercase)

Quadrangle Sheet Number

Location: Upper right corner of map, 0.3 inch above map neat line and 1 inch below map margin. Also located in lower right corner of map, 1 inch below map neat line and 1.7 inches above map margin.
Text: color = black (R–0, G–0, B–0); font size = 10; font = Times New Roman (uppercase)

Bar Scale Information

Three separate bar scales are located in the lower center of each map as follows:

  • The first bar scale represents the mile increment, about 1 inch below the map neat line.
  • The second bar scale represents the kilometer increment, 0.5 inch below the first scale.
  • The third bar scale represents the foot increment, 0.5 inch below the second scale.

Map Scale Information

Location: Lower center of map below bar scales.
Map scale: 1:12,000, 1:24,000, and 1:63,360. Other scales may be used in special circumstances.
Text: color = black (R–0, G–0, B–0); font size = 10; font = Arial (uppercase)

Source Note Information

Location: Lower left corner of map, 0.2 inch below map neat line. Lower limit not to exceed 2.2 inches below map neat line (0.5 inch above map margin).
Text: color = black (R–0, G–0, B–0); font size = 8; font = Times New Roman (uppercase and lowercase)

Adjoining Sheet Names

Location: Four adjoining sheet names positioned at the map corners, at a 45-degree angle and within 0.25 inch from map neat line corner. Four additional adjoining sheet names (two parallel and two perpendicular) positioned at map centers and within 0.2 inch from map neat line.
Text: color = black (R–0, G–0, B–0); font size = 6; font = Arial (uppercase and lowercase)

State Coordinate Ticks and Values (optional)

Location: Along the map neat line in 1000-meter increments. Values oriented horizontally.
Text: color = black (R–0, G–0, B–0); font size = 6; font = Arial (uppercase)

Geographic Coordinate Ticks and Values

  • The geographic coordinate values are indicated as latitude and longitude at each map corner.
  • The coordinate values are 15-minute, 7.5-minute, or 3.75-minute. For 7.5-minute quadrangle format maps, coordinate values representing the 2.5-minute ticks are represented.

North Arrow

A north arrow is displayed between the source note and scale bar, 5.5 inches from the left side map neat line.

Soil Survey Area Information

Text: color = black (R–0, G–0, B–0); font size = 10; font = Times New Roman (uppercase)

Map Projection Information

  • Universal Transverse Mercator (UTM), North American Datum of 1983 (NAD 83).
  • World Geographic System Datum of 1984 (WGS 84).
  • The digital map finishing template is set to UTM projection with GRS 80 spheroid and NAD 83 datum.

Index Map – Quadrangle Index

Location: At the bottom of the map, centrally between the scale bar and the soil survey area name.
Line Symbol: fill color = no color; outline color = black (R–0, G–0, B–0); line width = 0.4
Text: color = black (R–0, G–0, B–0); font size = 4 to 6; font = Arial (uppercase)
 

Data Layers

Geographic Area Names – Populated Places

Point Symbol: color = no color; size = 0
Text: color = black (R–0, G–0, B–0); font size = 8 to 10; font = Times New Roman (uppercase and lowercase)

Geographic Area Names – Non-Populated Places

Point Symbol: color = no color; size = 8
Text: color = black (R–0, G–0, B–0); font size = 8; font = Arial (uppercase and lowercase) or Times New Roman (uppercase and lowercase)

Hypsographic Features

Text: color = black (R–0, G–0, B–0); font size = 6 to 16; font = Arial (uppercase and lowercase)

Road Names

Text: color = black (R–0, G–0, B–0); font size = 7; font = Arial (uppercase)

Road Emblems

Line Symbol: color = no color
Text: For U.S. Interstate HWY: color = white (R–255, G–255, B–255); font size = 7; font = Arial bold (uppercase).
         For U.S. Route HWY and State Route HWY: color = black (R–0, G–0, B–0); font size = 7; font = Arial bold (uppercase)

Hydrography Points/Lines

Point/Line Symbol: color = cyan (R–0, G–255, B–255); point size = 10; line width = 0.25 to 0.65
Text: color = cyan (R–0, G–255, B–255); font size = 6 to 16; font = Times New Roman italic (uppercase and lowercase)

PLSS

Line Symbol: line color = light green (R–170, G–255, B–0); fill color = no color; line width = 0.2
Text: color = light green (R–170, G–255, B–0); font size = 12; font = Arial (uppercase)

Soil Boundaries

Line Symbol: fill color = no color; outline color = black (R–0, G–0, B–0) or amber (R–255, G–190, B–0); line width = 0.5 to 1.0

Political/Administrative Boundaries

Location (Text): Parallel to the boundary line symbol, 0.2 inch above line. There is a 0.3-inch space between boundary name word components and a 1-inch space between county/parish or MLRA name and State name word components.
Line Symbol: fill color = no color; outline color = black (R–0, G–0, B–0); line width = 1.0
Text: color = black (R–0, G–0, B–0); font size = 8; font = Times New Roman (uppercase)

Political/Administrative Areas – Map Interior

Line Symbol: fill color = no color; outline color = black (R–0, G–0, B–0); line width = 1.0
Text: color = black (R–0, G–0, B–0); font size = 12; font = Times New Roman (uppercase)

Soil Labels (Soil Intersect Layer)

Line Symbol: fill color = no color; outline color = no color
Text: color = black (R–0, G–0, B–0) or amber (R–255, G–190, B–0); font size = 6 to 8 (default = 8); font = Arial (uppercase and lowercase)

Soil Leaders

Line Symbol: color = black (R–0, G–0, B–0); line width = 0.005 inch

Special Feature Points/Lines

Point/Line Symbol: color = magenta (R–255, G–0, B–200); point size = 10; line size = 8

Index Map – Quadrangle Index

Location: The bottom of the map, centrally between the scale bar and the soil survey area name.
Line Symbol: fill color = no color; outline color = black (R–0, G–0, B–0); line width = 0.4
Text: color = black (R–0, G–0, B–0); font size = 4 to 6; font = Arial (uppercase)

Index Map – Limit-of-Soil-Survey Boundary

Location: The bottom of the map, centrally between the scale bar and the soil survey area name.
Line Symbol: fill color = no color; outline = red (R–255, G–0, B–0); line width = 0

 

647.13  Digital Map Finishing Checklist

Soil Survey Area Name:_____________________
Publication Map Sheet Number _________ of ______________
Field Sheet Numbers:_______________________
USGS Quadrangle Name:____________________
Scale: 1:_________
UTM Zone__________ and Datum__________

SW Corner Coordinate Values Lat.___/___/___, Long.___/___/___
Editor’s Name:_____________________________

Adjoining Sheet Number and Quadrangle Name: / Date match completed:
North:______________________    ___________
East:_______________________    ___________
South:______________________    ___________
West:_______________________   ___________

Marginalia
____ Join notes are present and correct
____ Range and township values are present and correct
____ Soil survey area title is correct and accurately placed
____ Publication sheet number is correct
____ Source note is accurate and correctly located

Culture
____ All cultural features appearing on the check maps are approved in Form NRCS–SOI–37A and are the correct symbol and line weight
____ All boundaries are indicated in the appropriate line symbol
____ All road emblems are correct and accurately placed
____ Section lines and numbers have been correctly indicated
____ All cultural features match the publication imagery

Hydrography
____ All hydrographic features appearing on the check maps are approved in Form NRCS–SOI–37A and are the correct symbol and line weight
____ All hydrographic features match the publication imagery
____ Hydrographic features do not coincide with other publication features
____ All lines are complete without skips or overshoots

Soils
____ Soil data is derived from a copy of the certified Soil Survey Geographic Database (SSURGO)
____ Soil labels are legible and placed horizontally where space permits
____ All soil lines are complete without skips or overshoots
____ All leaders are properly positioned to ensure correct association with the soil unit they represent
____ Soil lines and labels do not coincide with other features
____ All water polygons are labeled with the appropriate soil map unit label

Text
____ All text is correctly spelled and placed in the correct location
____ All text is in the appropriate font style and size for all named features

Materials
The following materials are available:
____ Check plots of each publication map with correct features
____ Index to publication maps
____ Final correlation document
____ All source material needed for review
____ Encapsulated postscript (.eps) files and PDFs
____ All DMFPODM specifications have been adhered to (see Part 647, Subpart B, Exhibits, Section 647.12 of the National Soil Survey Handbook)

 

647.14  Digital Map Finishing Certification

Soil Survey Area Name: _______________________________

Digital Map Finishing

  1. The map finishing was performed according to the NRCS specifications as described in Part 647, Subpart A, Section 647.6 of the National Soil Survey Handbook (NSSH) and the Digital Map Finishing and Print-on-Demand Maps User Guide (2010).
     
  2. The soil data are derived from the certified Soil Survey Geographic Database.
     
  3. A 100 percent edit has been completed.
     

I certify that all of the above statements are true.
 

___________________________________________________________________________
MLRA Regional Office Leader                                                                     Date

 

647.15  Glossary

Term Definition
Ad hoc features Ad hoc features are special surface soil features that are too small to delineate at the mapping scale but are large enough and contrasting enough to significantly influence use and management. Ad hoc features are not mapped when the feature they represent is a common component in the map unit. Features that are common components in the map unit should be named, described, and located on the landscape in the map unit description. When mapped, ad hoc features are represented as points or lines.
Annotation Information or markings on a map for the purpose of clarification, such as numbers, letters, symbols, and signs.
 
Approved symbols Soil survey, cultural, and hydrographic features that have been approved and certified during progressive or final correlation.
Attribute A characteristic of a geographic feature. Attribute data are linked or related to a feature by an identifier. For example, a soil symbol is linked to an attribute that describes the percentage of slope for the map unit area.
Base map A map showing background reference information (landforms, roads, boundaries, etc.). Other data themes can be placed on top of the base map.
Coinciding features Any features that occupy the same place in space.
Compilation The production of a new map from existing maps, aerial photographs, surveys, new data, and other sources. The new map is generally a geodetically controlled map.
Compilation bases Base maps, to which previously collected data is transferred, used for map finishing or digitizing. They are generally digital orthoimagery or rectified photographs.
Conventional features Natural or manmade objects or situations that are represented graphically with standard symbols that are adopted by Federal mapping agencies. These features are referred to as cultural and hydrographic features.
Coordinate pair A set of Cartesian coordinates describing the two-dimensional location of a point, line, or polygon feature in relation to the common coordinate system of the database.
Cultural features Any feature created or modified by humans.
Digital Of or relating to data in the form of numerical digits in binary form.
Digital Map Finishing and Print-on-Demand Maps (DMF–PODM) A new digital map finishing process that uses ArcGIS/ArcMap and the Maplex extension.
Digital orthoimagery An image in which individual parts have been shifted to correct displacements caused by tip, tilt, and relief.
Digital orthoimagery quadrangle Maps prepared from high-resolution aerial photographs that are corrected to eliminate the displacements of perspective, camera tilt, and terrain relief. They are scale true, meet national map accuracy standards, and permit accurate linear or area measurements.
Digital Raster Graphic (DRG) A raster image of a scanned USGS standard series topographic map.
Digitizing The process of converting information shown on an analog map into a digital format of x and y coordinates for use in a computer.
Edge matching An editing procedure which ensures that all features crossing adjacent map sheets have the same edge locations, attribute descriptions, and feature classes.
Export The process of transferring data or software from one system to another system.
Feature A representation of a geographic entity, such as a line, point, or polygon.
Field mapping imagery Rectified or unrectified aerial photographs used for mapping soils or other land features in the field. Field mapping media is generally a paper print with a surface which will take pencil or ink. Sometimes referred to as field map sheet.
Field sheet Any kind of map provided to field personnel for use in recording collected data. Generally, these are photographs of various kinds, including mosaics, unrectified and rectified digital orthoimagery graphs, and high- or low-altitude flights in varying formats, sizes, and scales.
Geodatabase A container used to store, query, and manipulate spatial and attribute data.
Geographic Information System (GIS) A combination of software, hardware, data, and people used to input, store, manipulate, analyze, and display geographically referenced spatial and associated attribute information.
Geographic coordinates A spherical coordinate system used to define the position of points on the Earth.
Georeference The process of establishing the relationship between page coordinates on an analog map and known real-world coordinates.
Heads-up digitizing Manual digitization by tracing a mouse or using a stylus over features displayed on a computer monitor.
Hydrography The science of the measurement, description, and mapping of the surface water of the Earth.
Index map Maps that show the location or coverage of other maps. Examples are the soil survey map sheet index and the USGS topographic quadrangle index.
Index to field map sheets A map of a smaller scale on which is depicted the location of field map sheets. It is used for locating field map sheets and referencing the publication map sheets.
Label A description of a feature.
Leaders A short line pointing to a label. Used to lead the eye across a space too small or narrow to contain the label.
Limit of soil survey A boundary that marks the extent of soil survey mapping in a soil survey area. A soil survey area is usually a county, but it may consist of multiple counties or parts of counties or coincide with other political boundaries, physiographic boundaries, or general land office survey sections.
Line A set of ordered coordinates that represents the shape of a geographic entity too narrow to be displayed as an area.
Manual digitizing The process of converting an analog map or other graphics display into a digital format with the use of a digitizing tablet and the manual entry of coordinates with a cursor.
Manuscript Synonymous with document.
Map finishing The final transfer of all map features to publication format by either manual (scribing) or digital (plotting) methods. The end products of the process are press-ready film negatives.
Metadata Information about the content, quality, condition, and other characteristics of data.
NAIP National Agriculture Imagery Program. It provides aerial digital orthoimagery to the Federal government and public. It is administered by the Farm Service Agency and Aerial Photography Field Office.
Neat line The line surrounding or limiting the image area of the map.
Negative Film containing an image in which the values of the original are reversed so that the dark areas appear light and vice versa.
Node The beginning or ending location of a line; the location where lines connect or the location where lines intersect.
Nominal scale The actual scale (with no rectification) at which photography is flown.
Planimetric map A large-scale map in which all features are projected perpendicularly onto a horizontal datum plane so that horizontal distances can be measured on the map with accuracy.
Public Land Survey System (PLSS) A method used in the United States to locate and identify land, particularly for titles and deeds of farm or rural land. Its basic units of area are the township and section.
Point A single x, y coordinate for a geographic feature too small to be represented as an area or line.
Polygon A closed area that is described by a string of coordinates that represent the boundary of the area. The beginning and ending points are the same. A series of attributes are usually assigned to the set of boundary coordinates that make up the unit.
Publication index A map developed using a county highway map as a base which depicts the layout of a soil survey’s map sheets; an index to map sheets for publication. It generally includes the publication sheet numbers that are referenced with topographic quadrangles and longitude and latitude graticules.
Raster A regular grid or array of cells covering a spatial area. A raster is often viewed as consisting of rows and columns of grid cells.
Raster scanning See Scanning.
Raster digitizing See Scanning.
Resolution The accuracy at which the location and shape of map features can be depicted for a given map scale.
Scale The relationship between a distance on a map and the corresponding distance on the Earth.
Scanning The process of using a device, generally referred to as a scanner, to capture a raster copy of a map in a digital bitmap or binary format and then saving the copy in a computer-readable file. This process is also an approach to convert black-and-white or color aerial photography into a digital format depicting up to 256 shades of gray or a nearly infinite number of color shades and hues.
Shaded Relief (Hillshade) An elevation data (derivative) raster image showing a three-dimensional effect of elevation changes and a sense of visual relief for cartography.
Source document Any document that is used as a source for providing information. For example, the source document for compilation is the field sheet. For scan digitizing, it is the overlay to which the compiled information has been transferred.
Special features Symbols with unique definitions and uses that are standard to a specified group of users but that are not adopted by all mapping agencies. Examples of special features include those identified for soil survey and SSURGO on the legend on Form NRCS–SOI–37A.
Soil Survey Geographic (SSURGO) database The most detailed in scale of the three NRCS soil geographic databases. Mapping is generally at scales of 1:12,000 or 1:24,000 but may range to 1:63,360. The database consists of georeferenced digital spatial data, metadata, and a tabular soil database, which gives the proportionate extent of the component soils and their properties for each map unit.
Soil area A delineation of the mapped soil unit. It is identified by a symbol. A soil boundary depicts the limit of the soil area (a polygon).
Soil legend A list of the soil map symbols and their names.
Spatial data Data pertaining to the location of geographical entities together with their spatial dimensions. Spatial data are classified as point, line, and polygon.
Text Any lettered information that appears on maps.
Topology A procedure that uses lists of features for explicitly defining spatial relationships. For example, an area is defined by the chains (arcs) comprising its border.
United States National Cartographic Standards for Spatial Accuracy (NCSSA) The standards that define spatial accuracy as it pertains to map products at scales of (NCSSA) 1:250,000 or larger produced by Federal agencies. They supersede the National Map Accuracy Standards (NMAS) issued June 10, 1941, and most recently revised on June 17, 1947, by the former U.S. Bureau of the Budget.
Vector A line showing the direction and distance between vertices. A vertex is the termination or intersection of lines or curves.
Vector data A form of digital data comprising x, y coordinate representations that are portrayed by points, lines (strings of points), or polygons (closed lines).
Vector digitizing See Heads-up digitizing.

 

647.16  SSURGO Metadata Template

Identification_Information:
  Citation:
    Citation_Information:
      Originator: U.S. Department of Agriculture, Natural Resources
                  Conservation Service 
      Publication_Date: ___(1)___  
      Title: Soil Survey Geographic (SSURGO) database for
      ________(2)________
      Publication_Information:
        Publication_Place: Fort Worth, Texas
        Publisher: U.S. Department of Agriculture, Natural Resources
                   Conservation Service 
      Other_Citation_Details: __(2a)___
      Online_Linkage: URL:http://SoilDataMart.nrcs.usda.gov/
  Description:
    Abstract:
      This data set is a digital soil survey and generally is the most
      detailed level of soil geographic data developed by the National
      Cooperative Soil Survey. The information was prepared by digitizing
      maps, by compiling information onto a planimetric correct base
      and digitizing, or by revising digitized maps using remotely
      sensed and other information.  

      This data set consists of georeferenced digital map data and
      computerized attribute data. The map data are in a soil survey area 
      extent format and include a detailed, field verified inventory
      of soils and nonsoil areas that normally occur in a repeatable
      pattern on the landscape and that can be cartographically shown at
      the scale mapped. A special soil features layer (point and line
      features) is optional. This layer displays the location of features
      too small to delineate at the mapping scale, but they are large
      enough and contrasting enough to significantly influence use and
      management. The soil map units are linked to attributes in the
      National Soil Information System relational database, which gives
      the proportionate extent of the component soils and their
      properties.

    Purpose:
      SSURGO 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.

    Supplemental_Information:
      Digital versions of hydrography, cultural features, and other
      associated layers that are not part of the SSURGO data set may be
      available from the primary organization listed in the Point of
      Contact.

  Time_Period_of_Content:
    Time_Period_Information:
      Range_of_Dates/Times:
        Beginning_Date: ____(4)_____   
        Ending_Date: ____(4a)____
    Currentness_Reference: publication date
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: As needed
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: _______(5)_______
      East_Bounding_Coordinate: _______(6)_______
      North_Bounding_Coordinate: _______(7)_______
      South_Bounding_Coordinate: _______(8)_______
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: soil survey
      Theme_Keyword: soils
      Theme_Keyword: Soil Survey Geographic 
      Theme_Keyword: SSURGO
    Place:
      Place_Keyword_Thesaurus:
        Counties and County Equivalents of the States of the United
        States and the District of Columbia (FIPS Pub 6-3)
      Place_Keyword: ________(9)______
          
    Place:
      Place_Keyword_Thesaurus:
        Counties and County Equivalents of the States of the United
        States and the District of Columbia (FIPS Pub 6-3)
      Place_Keyword: ________(10)______
     
    Place:
      Place_Keyword_Thesaurus: USGS Topographic Map Names Data Base
      Place_Keyword: _____________(11)_____________
      Place_Keyword: _____________(11)_____________
      Place_Keyword: _____________(11)_____________
      Place_Keyword: _____________(11)_____________
      Place_Keyword: _____________(11)_____________
  Access_Constraints: None
  Use_Constraints:
    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 onsite 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.

  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Department of Agriculture, Natural
                              Resources Conservation Service
      Contact_Position: State Soil Scientist
      Contact_Address:
        Address_Type: mailing address
        Address: ____________(12)____________
        City: ____________(13)____________
        State_or_Province: ______(14)______
        Postal_Code: ______(15)______
      Contact_Voice_Telephone: ______(16)______
      Contact_TDD/TTY_Telephone: 202 720 7808
      Contact_Facsimile_Telephone: ______(17)______
  Cross_Reference:
    Citation_Information:
      Originator: U.S. Department of Agriculture, ______(18)______
      Publication_Date: ______(19)______
      Title: Soil Survey of ______(20)______
      Geospatial_Data_Presentation_Form: atlas
      Other_Citation_Details:
        This soil survey contains information that can be applied in
        managing farms and wetlands; in selecting sites for roads, ponds,
        buildings, and other structures; and in judging the suitability
        of tracts of land for farming, industry, and recreation.
     
        This soil survey 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.

Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: Attribute accuracy is tested by manual
      comparison of the source with hard copy plots and/or symbolized
      display of the map data on an interactive computer graphic system.
      Selected attributes that cannot be visually verified on plots or
      on screen are interactively queried and verified on screen. In
      addition, the attributes are tested against a master set of valid
      attributes. All attribute data conform to the attribute codes in
      the signed classification and correlation document and amendment(s).

  Logical_Consistency_Report:
    Certain node/geometry and topology GT- polygon/chain relationships
    are collected or generated to satisfy topological requirements
    (the GT-polygon corresponds to the soil delineation). Some of these
    requirements include: chains must begin and end at nodes, chains
    must connect to each other at nodes, chains do not extend through
    nodes, left and right GT-polygons are defined for each chain
    element and are consistent throughout, and the chains representing
    the limits of the file are free of gaps. The tests of logical 
    consistency are performed using vendor software. All internal
    polygons are tested for closure with vendor software and are checked
    on hard copy plots. All data are checked for common soil lines (i.e., 
    adjacent polygons with the same label). Edge locations generally do 
    not deviate from centerline to centerline by more than 0.01 inch. 
    ____________(20a)______________.

  Completeness_Report:
    A map unit is a collection of areas defined and named the same in
    terms of their soil and/or nonsoil areas. Each map unit differs
    in some respect from all others in a survey area and is uniquely
    identified. Each individual area is a delineation. Each map unit
    consists of one or more components.
     
    Soil scientists identify small areas of soils or miscellaneous
    (nonsoil) areas that have properties and behavior significantly
    different than the named soils in the surrounding map unit. These
    minor components may be indicated as special features. If they
    have a minimal effect on use and management, or could not be
    precisely located, they may not be indicated on the map. 

    Specific National Cooperative Soil Survey standards and procedures
    were used in the classification of soils, design and name of map
    units, and location of special soil features. These standards are
    outlined in Agricultural Handbook 18, Soil Survey Manual, 1993,
    USDA, SCS; Agricultural Handbook 436, Soil Taxonomy, Soil Survey
    Staff, 1999, USDA, NRCS; and all Amendments; Keys to Soil Taxonomy,
    Soil Survey Staff, (current issue); National Soil Survey
    Handbook, title 430-VI,(current issue).
     
    The actual composition and interpretive purity of the map unit
    delineations were based on data collected by scientists during
    the course of preparing the soil maps. Adherence to National
    Cooperative Soil Survey standards and procedures is based on
    peer review, quality control, and quality assurance. Quality
    control is outlined in the memorandum of understanding for the
    soil survey area and in documents that reside with the Natural
    Resources Conservation Service state soil scientist. Four kinds
    of map units are used in soil surveys: consociations, complexes,
    associations, and undifferentiated groups.
     
    Consociations - Consociations are named for the dominant soil. In
    a consociation, delineated areas are dominated by a single soil
    taxon and similar soils. At least one half of the pedons in each
    delineation are of the same soil component so similar to the
    named soil that major interpretations are not affected
    significantly. The total amount of dissimilar inclusions of
    other components in a map unit generally does not exceed about
    15 percent if limiting and 25 percent if nonlimiting. A single
    component of a dissimilar limiting inclusion generally does not
    exceed 10 percent if very contrasting.
     
    Complexes and associations - Complexes and associations are named
    for two or more dissimilar components with the dominant component
    listed first. They occur in a regularly repeating pattern. The major
    components of a complex cannot be mapped separately at a scale of
    about 1:24,000. The major components of an association can be
    separated at a scale of about 1:24,000. In each delineation of
    either a complex or an association, each major component is normally
    present, though their proportions may vary appreciably from one
    delineation to another. The total amount of inclusions in a map unit
    that are dissimilar to any of the major components does not exceed
    15 percent if limiting and 25 percent if nonlimiting. A single kind
    of dissimilar limiting inclusion usually does not exceed 10 percent.

    Undifferentiated groups - Undifferentiated groups consist of two
    or more components that do not always occur together in the same
    delineation, but are included in the same named map unit because
    use and management are the same or similar for common uses. Every
    delineation has at least one of the major components and some may
    have all of them. The same principles regarding proportion of
    inclusions apply to undifferentiated groups as to consociations.

    Minimum documentation consists of three complete soil profile
    descriptions that are collected for each soil added to the legend,
    one additional per 3,000 acres mapped; three 10 observation
    transects for each map unit, one additional 10 point transect per
    3,000 acres.

    A defined standard or level of confidence in the interpretive
    purity of the map unit delineations is attained by adjusting the
    kind and intensity of field investigations. Field investigations
    and data collection are carried out in sufficient detail to name
    map units and to identify accurately and consistently areas of
    about ___(21)___ acres.

  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
        The accuracy of these digital data is based upon their
        compilation to base maps that meet National Map Accuracy
        Standards. 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.

  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: ___________(22)___________
          Publication_Date: ___(23)___
          Title: ___________(24)___________
          Geospatial_Data_Presentation_Form: ___________(25)___________
          Publication_Information:
            Publication_Place: ___________(26)___________
            Publisher: ___________(27)___________
      Source_Scale_Denominator: ___(28)___
      Type_of_Source_Media: ___(29)___
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: ___(30)___
        Source_Currentness_Reference: ___________(31)___________
      Source_Citation_Abbreviation: ___________(32)___________
      Source_Contribution: ___________(33)___________
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: ___________(22)___________
          Publication_Date: ___(23)___
          Title: ___________(24)___________
          Geospatial_Data_Presentation_Form: ___________(25)___________
          Publication_Information:
            Publication_Place: ___________(26)___________
            Publisher: ___________(27)___________
      Source_Scale_Denominator: ___(28)___
      Type_of_Source_Media: ___(29)___
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Range_of_Dates/Times:
            Beginning_Date: ___(30a)___
            Ending_Date: ___(30b)___
        Source_Currentness_Reference: __________________(31) _____________
      Source_Citation_Abbreviation: ___________(32)___________
      Source_Contribution: _______________________(33) ________________
    Process_Step:
      Process_Description: _______________________(34) _______________________
      Source_Used_Citation_Abbreviation: ___________(36)___________
      Process_Date: ___(35)___
    Process_Step:
      Process_Description: _______________________(34) _______________________
      Source_Used_Citation_Abbreviation: ___________(36)___________
      Process_Date: ___(35)___
Spatial_Data_Organization_Information: 
  Direct_Spatial_Reference_Method: Vector
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Latitude_Resolution: 0.0000001
      Longitude_Resolution: 0.0000001
      Geographic_Coordinate_Units: decimal degrees 
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: Geodetic Reference System 80 
      Semi-major_Axis: 6378137.0
      Denominator_of_Flattening_Ratio: 298.257
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type: 
      Entity_Type_Label: Special Soil Features
      Entity_Type_Definition:
        Special Soil Features represent soil, nonsoil, or landform
        features that are too small to be digitized as soil delineations
        (area features).  
      Entity_Type_Definition_Source:
        U.S. Department of Agriculture. 1993. Soil Survey Manual.
        Soil Surv. Staff, U.S. Dep. Agric. Handb. 18.
    Attribute: 
      Attribute_Label: Special Soil Features Codes
      Attribute_Definition:
        Special Soil Features Codes represent specific Special Soil
        Features. These features are identified with a major code,
        a minor code, and a descriptive label. The codes and label
        are assigned to the point or line assigned to represent the
        feature on published maps.
      Attribute_Definition_Source:
        U.S. Department of Agriculture. 1993. Soil Survey Manual.
        Soil Surv. Staff, U.S. Dep. Agric. Handb. 18; U.S. Department
        of Agriculture. (current issue). National Soil Survey
        Handbook, title 430-VI, part 647. Soil Conserv. Serv.
      Attribute_Domain_Values: 
        Codeset_Domain:
          Codeset_Name:
            Classification and Correlation of the Soils of _____(45)_____
          Codeset_Source:
            U.S. Department of Agriculture, Natural Resources
            Conservation Service

  Overview_Description:
    Entity_and_Attribute_Overview:
      Map Unit Delineations are closed polygons that may be dominated
      by a single soil or nonsoil component plus allowable similar or
      dissimilar soils, or they can be geographic mixtures of groups
      of soils or soils and nonsoil areas.

      The map unit symbol uniquely identifies each closed delineation
      map unit. Each symbol corresponds to a map unit name. The map unit
      key is used to link to information in the National Soil
      Information System tables. 

      Map Unit Delineations are described by the National Soil
      Information System database. This attribute database gives the
      proportionate extent of the component soils and the properties for
      each soil. The database contains both estimated and measured data
      on the physical and chemical soil properties and soil
      interpretations for engineering, water management, recreation,
      agronomic, woodland, range, and wildlife uses of the soil.

      The National Soil Information System database contains static
      metadata. It documents the data structure and includes such
      information as what tables, columns, indexes, and relationships
      are defined as well as a variety of attributes of each of these
      database objects.  Attributes include table and column
      descriptions and detailed domain information.

      The National Soil Information System database also contains a
      distribution metadata. It records the criteria used for selecting
      map units and components for inclusion in the set of distributed
      data.

      Special features are described in the feature table.  It includes a
      feature label, feature name, and feature description for each
      special and ad hoc feature in the survey area.

    Entity_and_Attribute_Detail_Citation:
      U.S. Department of Agriculture. 1999. Soil Taxonomy: A Basic System
      of Soil Classification for Making and Interpreting Soil Surveys.
      Natural Resources Conserv. Serv., U.S. Dep. Agric. Handb. 436.

      U.S. Department of Agriculture. (current issue). Keys to Soil
      Taxonomy.  Soil Surv. Staff, Natural Resources Conserv. Serv.

      U.S. Department of Agriculture. (current issue). National Soil
      Survey Handbook, title 430-VI. Soil Surv. Staff, Natural Resources
      Conservation Service.

      U.S. Department of Agriculture. 1993. Soil Survey Manual.
      Soil Surv. Staff, U.S. Dep. Agric. Handb. 18.

Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Department of Agriculture, Natural
                              Resources Conservation Service, National
                              Cartography and Geospatial Center
      Contact_Address:
        Address_Type: mailing address
        Address: P.O. Box 6567
        City: Fort Worth
        State_or_Province: Texas
        Postal_Code: 76115
      Contact_Voice_Telephone: 800 672 5559 
      Contact_Facsimile_Telephone: 817 509 3469
  Resource_Description: ______(46)______ SSURGO
  Distribution_Liability:
    Although these data have been processed successfully on a computer
    system at the U.S. Department of Agriculture, no warranty expressed
    or implied is made by the Agency regarding the utility of the data
    on any other system, nor shall the act of distribution constitute
    any such warranty. The U.S. Department of Agriculture will warrant
    the delivery of this product in computer readable format, and will
    offer appropriate adjustment of credit when the product is determined
    unreadable by correctly adjusted computer input peripherals, or
    when the physical medium is delivered in damaged condition. Request
    for adjustment of credit must be made within 90 days from the date
    of this shipment from the ordering site.

    The U.S. Department of Agriculture, nor any of its agencies are
    liable for misuse of the data, for damage, for transmission of
    viruses, or for computer contamination through the distribution of
    these data sets. The U.S. Department of Agriculture (USDA) prohibits
    discrimination in all its programs and activities on the basis of
    race, color, national origin, sex, religion, age, disability,
    political beliefs, sexual orientation, or marital or family status.
   (Not all prohibited bases apply to all programs.)

  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ARC/INFO coverage
        Format_Information_Content: spatial
        Transfer_Size: ___(48)___
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: ISO 9660 Level 1
    Digital_Form:
      Digital_Transfer_Information:    
        Format_Name: ARCE
        Format_Information_Content: spatial
        Transfer_Size: ___(48)___
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: ISO 9660 Level 1
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ArcView shapefile
        Format_Information_Content: spatial
        Transfer_Size: ___(48)___
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: ISO 9660 Level 1
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: ASCII
        Format_Information_Content: keys and attributes
        Transfer_Size: ___(49)___
      Digital_Transfer_Option:
        Offline_Option:
          Offline_Media: CD-ROM
          Recording_Format: ISO 9660 Level 1
    Fees:
      The charge is $50 for a CD-ROM that contains one or more data
      sets. A data set is one soil survey area that includes both spatial
      and attribute data.

    Ordering_Instructions:
      Call or write to organizations listed under Distributor. Spatial
      line data and locations of special feature symbols are in ARC/INFO
      coverage and export formats, and ArcView shapefile format. The 
      National Soil Information System attribute soil data are available
      in variable length, pipe delimited, ASCII file format.
          
    Turnaround: 10 working days
Metadata_Reference_Information: 
  Metadata_Date: ___(51)___ 
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Department of Agriculture, Natural
                              Resources Conservation Service
      Contact_Position: State Soil Scientist
      Contact_Address:
        Address_Type: mailing address
        Address: ___________(53)___________
        City: ___________(54)___________
        State_or_Province: __(55)__
        Postal_Code: __(56)__
      Contact_Voice_Telephone: ___________(57)___________
      Contact_Facsimile_Telephone: ___________(58)___________
  Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata 
  Metadata_Standard_Version: FGDC-STD-001-1998

EXPLANATION OF METADATA TEMPLATE’S NUMBERED ELEMENTS

[Unless otherwise noted, all references refer to Content Standards for Digital Geospatial Metadata (Federal Geographic Data Committee. 1998. Washington, DC).]

Numbers in Identification Information Section

1 Publication Date.—The date when the data set is published or otherwise made available for release. Enter the year the data are submitted for archiving and distribution. Enter the year in the date format YYYY. Reference is from p. 53, sec. 8.2. Example:

Publication Date: 1994

2 Title.—The name by which the data set is known. Enter the complete name of the soil survey area as defined in the memorandum of understanding. Reference is from p. 53, sec. 8.4. Example:

Title: Polk County, Iowa

2a Other Citation Details.—The non-MLRA soil survey area symbol. Enter the non-MLRA soil survey area symbol as defined in the National Soil Survey Handbook Part 608, Section 608.02. Reference is from p. 54, sec. 8.9. Example:

Other Citation Details: IA153

4 Beginning Date.—The first year of the event. Enter the year in the date format YYYYMMDD. Reference is from p. 56, sec. 9.3.1. Example:

Beginning Date: 19980601

4a Ending Date.—The last year of the event. Enter the year in the date format YYYYMMDD. Reference is from p. 56, sec. 9.3.1. Example:

Ending Date: 20080930

Bounding Coordinates.—The limits of coverage of a data set expressed by latitude and longitude values in the order westernmost, easternmost, northernmost, and southernmost. The bounding coordinates are for the soil survey area.

5 West Bounding Coordinate.—The westernmost coordinate of the limit of coverage expressed in longitude. Enter the coordinate in decimal degrees. Reference is from p. 5. Example:

West Bounding Coordinate: –93.750

6 East Bounding Coordinate.—The easternmost coordinate of the limit of coverage expressed in longitude. Enter the coordinate in decimal degrees. Reference is from p. 5. Example:

East Bounding Coordinate: –93.250

7 North Bounding Coordinate.—The northernmost coordinate of the limit of coverage expressed in latitude. Enter the coordinate in decimal degrees. Reference is from p. 5. Example:

North Bounding Coordinate: 41.750

8 South Bounding Coordinate.—The southernmost coordinate of the limit of coverage expressed in latitude. Enter the coordinate in decimal degrees. Reference is from p. 5. Example:

South Bounding Coordinate: 41.375

9 Place Keyword.—The name of the State that the data set is in. Enter multiple States as separate entries. Reference is from p. 7. Example:

Place Keyword: Nevada
Place Keyword: Utah

10 Place Keyword.—The name of the county that the data set is in. Enter multiple counties as separate entries. Reference is from p. 7. Example:

Place Keyword: Rains County
Place Keyword: Hopkins County

11 Place Keyword.—The name of the quadrangle in the data set. Enter the USGS quadrangle name from the National Topographic Map Names database. The quadrangle numbers are available from the SSURGO Support Section, National Geospatial Management Center. The quadrangle names and numbers are also in the NASIS Area table where Area Type Name equals “USGS 7.5 Minute Quadrangles.” Enter all quadrangles that make up the soil survey area and enter each as a separate entry. Reference is from p. 7. Example:

Place Keyword: Pleasantville Quadrangle (s4109338)
Place Keyword: Hartford Quadrangle (s4109337)

12 Address.—The address line. Reference is from p. 59, sec. 10.4.2. Example:

Address: 210 Walnut Street, Suite 693

13 City.—The city of the address. Reference is from p. 59, sec. 10.4.3. Example:

City: Des Moines

14 State or Province.—The State or province of the address. Reference is from p. 59, sec. 10.4.4. Example:

State or Province: Iowa

15 Postal Code.—The ZIP or other postal code of the address. Reference is from p. 59, sec. 10.4.5. Example:

Postal Code: 50309–2180

16 Contact Voice Telephone.—The telephone number by which individuals can speak to the organization or individual. Reference is from p. 59, sec. 10.5. Example:

Contact Voice Telephone: 402 437 5499

17 Contact Facsimile Telephone.—The telephone number of a facsimile machine of the organization or individual. Reference is from p. 60, sec. 10.7. Example:

Contact Facsimile Telephone: 402 437 5336

18 Originator.—The name of an organization that developed the data set. This is the name from the published document. Reference is from p. 53, sec. 8.1. Example :

Originator: Natural Resources Conservation Service or Originator: Soil Conservation Service

19 Publication Date.—The date when the data set is published or otherwise made available for release. Enter the year the data is submitted for archiving and distribution. Enter the year in the date format YYYY. Reference is from p. 53, sec. 8.2. Example:

Publication Date: 1994

20 Title.—The name by which the data set is known. Enter the complete name of the soil survey area as defined in the memorandum of understanding. Reference is from p. 53, sec. 8.4. Example:

Title: Polk County, Iowa

20a Edge Match Statements.—Edge matching of digital data is described in terms of accuracy of matching of feature edges, feature labels, and descriptive attributes between quadrangles or data sets. In SSURGO, all three are required to match between adjacent quadrangles within the survey. Only the soil survey boundaries are required to match between surveys. Examples of edge match statements for adjacent soil surveys:

The quadrangles in this soil survey are not edge matched to quadrangles in adjacent soil surveys.

The quadrangles in this soil survey are edge matched to quadrangles in adjacent soil surveys.

The quadrangles in this soil survey are edge matched to quadrangles in the Alpha Soil Survey, but are not edge matched to those in the Beta or Gamma Soil Surveys.

Feature edges and descriptive attributes of quadrangles in this soil survey are matched to those in adjacent soil surveys. Feature labels do not match.

21 Minimum Size Delineation.—The minimum size of map unit delineation as defined in the memorandum of understanding for the data set. Enter the size in acres. Example:

2

Numbers in Data Quality Information Section

The Spatial Data Transfer Standard Data Quality Report consists of five parts covering lineage, positional accuracy, attribute accuracy, logical consistency, and completeness. The Data Quality Report is presented in part 1, section 3 of the Spatial Data Transfer Standard.

22 Originator.—The name of an organization or individual that developed the data set. Reference is from p. 53, sec. 8.4. Example:

Originator: U.S. Geological Survey

23 Publication Date.—The date when the data set is published or otherwise made available for release. Enter the year in the date format YYYY. Reference is from p. 53, sec. 8.2. Example:

Publication Date: 1983

24 Title.—The name by which the data set is known. Reference is from p. 53, sec. 8.4. Example:

Title: Soil Survey of Polk County, Iowa

25 Geospatial Data Presentation Form.—The mode in which the geospatial data is presented. Reference is from p. 54, sec. 8.6. Example:

Geospatial Data Presentation Form: Topographic quadrangle map

26 Publication Place.—The name of the city and State where the data set was published or released. Reference is from p. 54, sec. 8.8.1. Example:

Publication Place: Reston, Virginia

27 Publisher.—The name of the individual or organization that published the data set. Reference is from p. 54, sec. 8.8.2. Example:

Publisher: U.S. Geological Survey

28 Source Scale Denominator.—The denominator of the representative fraction on a map. Reference is from p. 13, sec. 2.5.1.2. Example:

Source Scale Denominator: 12000

29 Type of Source Media.—The medium of the source data set. Reference is from p. 13, sec. 2.5.1.3. Example:

Type of Source Media: Stable-base material

Single Date/Time.—This is a single element and must be followed with the element Calendar Date.

30 Calendar Date.—The year. Enter the year in the date format YYYY. Reference is from p. 56, sec. 9.1.1. Example:

Calendar Date: 1960

Range of Dates/Times.—This is a compound element and must be followed with the elements Beginning Date and Ending Date.

30a Beginning Date.—The first year of the event. Enter the year in the date format YYYY. Reference is from p. 56, sec. 9.3.1. Example:

Beginning Date: 1989

30b Ending Date.—The last year for the event. Enter the year in the date format YYYY. Reference is from p. 56, sec. 9.3.1. Example:

Ending Date: 1992

31 Source Currentness Reference.—The basis on which the source time period of content information of the source data set is determined. Reference is from p. 14, sec. 2.5.1.4.1. Example:

Source Currentness Reference: Publication date

32 Source Citation Abbreviation.—The short-form alias for the Source Citation. Reference is from p.14, sec. 2.5.1.5. Example:

Source Citation Abbreviation: NRCS1

33 Source Contribution.—A brief statement identifying the information contributed by the source to the data set. Reference is from p. 14, sec. 2.5.1.6. Example:

Source Contribution: Digitizing source

34 Process Description.—An explanation of the event and related parameters or tolerances. Reference is from p. 14, sec. 2.5.2.1.

35 Process Date.—The date when the event was completed. Enter the year in the date format YYYY. Reference is from p. 14, sec. 2.5.2.3. Example:

Process Date: 1993

36 Source Used Citation Abbreviation.—The source citation abbreviation of a data set used in the processing step. Reference is from p. 14, sec. 2.5.2.2. Example:

Source Used Citation Abbreviation: NRCS1

Numbers in Spatial Reference Information Section

45 Codeset Name.—The name of the soil survey area as it appears in the title of the soil classification and correlation document. Example:

Codeset Name: Polk County, Iowa

Numbers in Distribution Information Section

46 Resource Description.—The identifier by which the distributor knows the data set. Reference is from p. 43, sec. 6.2. Example:

Resource Description: Polk Country, Iowa SSURGO

48 Transfer Size.—The size, or estimated size, of the transferred data set in megabytes. This is the sum for all DLGs in the data set. Reference is from p. 45, sec. 6.4.2.1.7. Example:

Transfer Size: 14.4

49 Transfer Size.—The size, or estimated size, of the transferred data set in megabytes. This is the sum for all attribute tables in the data set. Reference is from p. 45, sec. 6.4.2.1.7. Example:

Transfer Size: 0.4

Numbers in Metadata Reference Information Section

51 Metadata Date.—The date that the metadata were created or last updated. Enter the date in the format YYYYMMDD. Reference is from p. 50, sec. 7.1. Example:

Metadata Date: 19940311

53 Address.—The address line. Reference is from p. 59, sec. 10.4.2. Example:

Address: 210 Walnut Street, Suite 693

54 City.—The city of the address. Reference is from p. 59, sec. 10.4.3. Example:

City: Des Moines

55 State or Province.—The State or province of the address. Reference is from p. 59, sec. 10.4.4. Example:

State or Province: Iowa

56 Postal Code.—The ZIP or other postal code of the address. Reference is from p. 59, sec. 10.4.5. Example:

Postal Code: 50309­2180

57 Contact Voice Telephone.—The telephone number by which individuals can speak to the organization or individual. Reference is from p. 59, sec. 10.5. Example:

Contact Voice Telephone: 402 437 5499

58 Contact Facsimile Telephone.—The telephone number of a facsimile machine of the organization or individual. Reference is from p. 60, sec. 10.7. Example:

Contact Facsimile Telephone: 402 437 5336