## Montana State Library
GIS Data Dictionary
Metadata for Upper Clark Fork Public Land Survey Sections from 1:24,000 scale USGS quadrangles
Table of Contents

Identification Information
Data Quality Information
Spatial Data Organization Information
Spatial Reference Information
Entity and Attribute Information
Distribution Information
Metadata Reference Information
Full FGDC-compliant Metadata

### Browse Graphic

### Identification_Information:

      Citation
        Originator:        Montana State Library
        Publication_Date:  02/05/1992
        Title:             Upper Clark Fork Public Land Survey Sections from 1:24,000 scale USGS quadrangles
        Online_Linkage:  http://nris.mt.gov/nsdi/nris/e00/ab19.zip
        Online_Linkage:  http://nris.mt.gov/nsdi/nris/shape/ab19.zip
      Description
        Abstract:
            Public Land Survey Sections from USGS 1:24,000 scale
            quadrangles, Upper Clark Fork Basin, Montana.  The
            quadrangles have been joined into a single data set, but
            have not been edgematched, except to preserve polygon
            topology.  The USGS major and minor attribute codes have
            been replaced with the codes shown in this metadata record.
            See http://nris.mt.gov/nsdi/nris/cf7.dbf for dates of
            the source quadrangles.
        Purpose:
            Base map data, approximate location of features whose
            public land survey location description are known.
      Time_Period_of_Content
        Beginning_Date:  01/01/1961
        Ending_Date:     01/01/1989
      Access_Constraints:
            None
      Use_Constraints:
            Not for use at scales greater than 1:24000.
      Native_Data_Set_Environment:
          Arc/Info coverage or shapefile

### Data_Quality_Information:

      Attribute_Accuracy_Report:
            Attributes were interpreted from the original DLG files by
            a computer program.  The accuracy of this interpretation
            has not been extensively checked.  Attribute accuracy of the
            original Digital Line Graph data is estimated by the USGS
            at 98.5 percent, and was tested by them as follows:
            - manual comparison of the source with hard copy plots.
            - symbolized display of the digital line graph on an
            interactive compter graphic system.
            - Selected attributes that could not be visually verified on
            plots or on screen, were interactively queried and verified
            on screen.
            In addition, U.S. Geological Survey  (USGS) Production
            System (PROSYS) software tested the attributes against a
            master set of valid attributes for the category; it also
            checked for selected valid attribute combinations, and for
            valid attributes relative to topology and dimensionality.
            All attribute data conform to the attribute codes current
            as of the date of digitizing.
      Completeness_Report:
            For DLG data, Digital Revision Status = Not revised:
            Data completeness reflects the content of the source
            quadrangle.  Features may have been eliminated or
            generalized on the source graphic, due to scale and
            legibility constraints.
            For DLG data, Digital Revision Status = Limited Update:
            This file has undergone limited update digital revision.
            The file contains only (1) those features that are
            photoidentifiable on monoscopic source, supplemented with
            limited ancillary source, and (2) those features, present on
            the original source quadrangle, that can not be reliably
            photoidentified but that are not considered particularly
            prone to change.
            For DLG data, Digital Revision Status = Standard Update:
            This file has undergone standard update digital revision.
            The data completeness of this file meets National Mapping
            Division standards for feature content.
      Horizontal_Positional_Accuracy_Report:
            Approximate accuracy is 12 meters, assuming the source maps
            meet National Map Accuracy Standards (NMAS).  NMAS
            horizontal accuracy requires that at least 90 percent of
            points tested are within 0.02 inches of the true position.
            The digital data are estimated to contain a horizontal
            positional error of less than or equal to 0.003 inches
            standard error in the two component directions relative to
            the source quadrangle.  Comparison to the graphic source is
            used as control to assess digital positional accuracy.
            Cartographic offsets may be present on the graphic source,
            due to scale and legibility constraints.  Digital map
            elements require edge alignment between data sets.  Data
            along each quadrangle edge are tested against the data set
            for the adjacent quadrangle using PROSYS; tests check for
            positional accuracy between data sets within a 0.02 inches
            tolerance.  Features with like dimensionality, and with or
            without like attribution, that are within the tolerance
            are adjusted by moving the feature equally in both data
            sets.  Features outside the tolerance are not moved.
      Lineage
        Source_Information
          Originator:  National Mapping Division
                       U.S. Geological Survey
          Publication_Date:  01/01/1961
          Title:  1:24,000-scale Digital Line Graphs
          Publication_Information
            Publication_Place:  Reston, VA
            Publisher:  U.S. Geological Survey
          Other_Citation_Details:
            See http://nris.mt.gov/nsdi/nris/cf7.dbf for publication
            dates of the various quadrangles.
          Source_Scale_Denominator:  24000
          Type_of_Source_Media:  unknown
          Source_Time_Period_of_Content
            Beginning_Date:  01/01/1961
            Ending_Date:     01/01/1989
          Source_Citation_Abbreviation:  Q7.5
          Source_Contribution:
              The data set is a re-processed copy of this source.
      Process_Step
        Process_Description:
          Interpret USGS attributes, project quadrangles to State Plane
          Coordinates, and join quadrangles into one data set.
        Source_Used_Citation_Abbreviation:  Q7.5
        Process_Date:  02/05/1992
        Source_Produced_Citation_Abbreviation:  fin1
      Process_Step
        Process_Description:
          Import additional quadrangles and append to the data that
          was imported in 1992.
        Source_Used_Citation_Abbreviation:  fin1
        Source_Used_Citation_Abbreviation:  Q7.5
        Process_Date:  04/14/1997
        Source_Produced_Citation_Abbreviation:  fin2

### Spatial_Data_Organization_Information:

      Direct_Spatial_Reference_Method:  Vector
      Point_and_Vector_Object_Information
        Number of Arcs:  8143
        Number of Polygons:  2995
        Number of Polygon Labels:  2994

### Spatial_Reference_Information:

      Horizontal_Coordinate_System_Definition
        Grid_Coordinate_System_Name:  State Plane Coordinate System 1983
          SPCS_Zone_Identifier:  2500
          Map_Projection_Name:  Lambert Conformal Conic
          Standard_Parallel:  45
          Standard_Parallel:  49
          Longitude_of_Central_Meridian:  -109.5
          Latitude_of_Projection_Origin:  44.25
          False_Easting:   600000
          False_Northing:  0
        Planar_Distance_Units:  meters
        Geodetic_Model
          Horizontal_Datum_Name:  North American Datum of 1983
        Altitude_Encoding_Method:  Implicit coordinate

### Entity_and_Attribute_Information:

      Entity_Type_Definition:  Arc Attribute Table
        Attribute_Label:  TLINE
          Attribute_Definition:  Code for township lines
          Enumerated_Domain_Value   Enumerated_Domain_Value_Definition
          -----------------------   ----------------------------------
            0                       Map Edge
            1                       Section Line
            2                       Township Line
            3                       7.5-Minute Quad Boundary
          Beginning_Date_of_Attribute_Values:  02/05/1992
          Ending_Date_of_Attribute_Values:    04/14/1997

        Attribute_Label:  CODE
          Attribute_Definition:  Arc Attribute Code
          Enumerated_Domain_Value   Enumerated_Domain_Value_Definition
          -----------------------   ----------------------------------
            0                       Public Land Survey Line
            1                       Approximate
            3                       Arbitrary Closure
            6                       Approximate, Arbitrary Closure
            11                      Approximate, Coincident Boundary
            101                     Coincident Boundary
            102                     Coincident Road
            103                     Coincident Misc Trans
            104                     Coincident Man-made Feature
            110                     Coincident Boundary and Road
            111                     Coincident Road and Misc Trans
            112                     Coincident Hydrography
          Beginning_Date_of_Attribute_Values:  01/01/1961
          Ending_Date_of_Attribute_Values:    01/01/1989

      Entity_Type_Definition:  Polygon Attribute Table
        Attribute_Label:  TOWN
          Attribute_Definition:  Township number
            Range_Domain
              Range_Domain_Minimum:  0
              Range_Domain_Maximum:  14
          Beginning_Date_of_Attribute_Values:  01/01/1961
          Ending_Date_of_Attribute_Values:    01/01/1989

        Attribute_Label:  TPART
          Attribute_Definition:  Partial Township Identifier
            Unrepresentable_Domain:  Character field
          Beginning_Date_of_Attribute_Values:  01/01/1961
          Ending_Date_of_Attribute_Values:    01/01/1989

        Attribute_Label:  N/S
          Attribute_Definition:  Township North or South identifier
          Enumerated_Domain_Value   Enumerated_Domain_Value_Definition
          -----------------------   ----------------------------------
            N                       Township is North of the Base Line
            S                       Township is South of the Base Line
          Beginning_Date_of_Attribute_Values:  01/01/1961
          Ending_Date_of_Attribute_Values:    01/01/1990

        Attribute_Label:  RANGE
          Attribute_Definition:  Range Number
            Range_Domain
              Range_Domain_Minimum:  0
              Range_Domain_Maximum:  20
          Beginning_Date_of_Attribute_Values:  01/01/1961
          Ending_Date_of_Attribute_Values:    01/01/1990

        Attribute_Label:  RPART
          Attribute_Definition:  Partial Range Identifier
            Unrepresentable_Domain:  Character field
          Beginning_Date_of_Attribute_Values:  01/01/1961
          Ending_Date_of_Attribute_Values:    01/01/1990

        Attribute_Label:  E/W
          Attribute_Definition:  Range East or West identifier
          Enumerated_Domain_Value   Enumerated_Domain_Value_Definition
          -----------------------   ----------------------------------
            E                       Range is East of the Principal Meridian
            W                       Range is West of the Principal Meridian
          Beginning_Date_of_Attribute_Values:  01/01/1961
          Ending_Date_of_Attribute_Values:    01/01/1990

        Attribute_Label:  SECTION
          Attribute_Definition:  Section Number
            Range_Domain
              Range_Domain_Minimum:  0
              Range_Domain_Maximum:  36
          Beginning_Date_of_Attribute_Values:  01/01/1961
          Ending_Date_of_Attribute_Values:    01/01/1990

        Attribute_Label:  SPART
          Attribute_Definition:  Partial Section identifier
            Unrepresentable_Domain:  Character field
          Beginning_Date_of_Attribute_Values:  01/01/1961
          Ending_Date_of_Attribute_Values:    01/01/1990

      Entity_Type_Definition:  Node Attribute Table
        Attribute_Label:  CODE
          Attribute_Definition:  Node type definition code
          Enumerated_Domain_Value   Enumerated_Domain_Value_Definition
          -----------------------   ----------------------------------
            100                     Section Corner
            101                     Section Corner, coinc hyps
            104                     Section Corner, field location
            105                     Section Corner, field location, coinc hyps
            106                     Section Corner, field location, coinc bnd
            107                     Section Corner, field location, coinc hyps & bnd
            300                     Closing Corner
            301                     Closing Corner, coinc hyps
            304                     Closing Corner, field location
            305                     Closing Corner, field location, coinc hyps
            306                     Closing Corner, field location, conic bnd
            307                     Closing Corner, field location, coinc hyps & bnd
            400                     Meander Corner
            700                     Witness Corner
            704                     Witness Corner, identified in field
            1200                    Quarter-Section Corner
            1204                    Quarter-Section Corner, field location
            1205                    Quarter-Section Corner, field loc, coinc hyps
            1206                    Quarter-Section Corner, field loc, coinc bnd
            1207                    Quarter-Section Corner, field loc, coinc hyps & bn
            1500                    Arbitrary Section Corner
          Beginning_Date_of_Attribute_Values:  01/01/1961
          Ending_Date_of_Attribute_Values:    01/01/1990

### Distribution_Information:

### Metadata_Reference_Information:

      Metadata_Date:  04/15/1997
      Metadata_Review_Date:  08/22/1997
      Metadata_Contact:  Gerry Daumiller