Identification_Information
  Citation
    Citation_Information
      Originator:        Montana State Library
      Publication_Date:  20020130
      Title:             Greater Yellowstone Area, Montana Hydrography Polygons from 1:24,000 scale U.S.G.S. quadrangles
      Geospatial_Data_Presentation_Form:  map
      Publication_Information
        Publication_Place:  Helena, Montana
        Publisher:          Montana State Library
      Online_Linkage: http://nris.mt.gov/nsdi/nris/e00/dlghd2.zip
      Online_Linkage: http://nris.mt.gov/nsdi/nris/shape/dlghd2.zip
  Description
    Abstract:
        Hydrography polygons from USGS 1:24,000 scale quadrangles,
        Greater Yellowstone Area, Montana.  The quadrangles have been
        joined into a single data set, but have not been edgematched,
        except to perserve polygon topology.  The USGS major and minor
        attribute codes have been replaced with the codes shown in this
        metadata record.

        A few of the DLG files from USGS had coordinates in the NAD83
        datum, while most were in NAD27.  Because of the diffrence between
        the position of the quadrangle boundaries between NAD83 and NAD27,
        there are gaps in the data, generally about 200 meters wide, between
        adjacent quadrangles that have different datums.

        See http://nris.mt.gov/nsdi/nris/dlg1.dbf for dates of
        the source quadrangles.
    Purpose:
        Base map data.
  Time_Period_of_Content
    Time_Period_Information
      Range_of_Dates/Times
        Beginning_Date:  1948
        Ending_Date:     1996
    Currentness_Reference:  Publication Date
  Status
    Progress:  Complete
    Maintenance_and_Update_Frequency:  Unknown
  Spatial_Domain
    Bounding_Coordinates
      West_Bounding_Coordinate:   -111.875
      East_Bounding_Coordinate:   -109.50
      North_Bounding_Coordinate:  46.375
      South_Bounding_Coordinate:  44.50
    Data_Set_G-Polygon
      Data_Set_G-Polygon_Outer_G-Ring
        G-Ring_Latitude:   44.50
        G-Ring_Longitude:  -111.625
        G-Ring_Latitude:   45.625
        G-Ring_Longitude:  -111.625
        G-Ring_Latitude:   45.625
        G-Ring_Longitude:  -111.875
        G-Ring_Latitude:   46.375
        G-Ring_Longitude:  -111.875
        G-Ring_Latitude:   46.375
        G-Ring_Longitude:  -110.0
        G-Ring_Latitude:   45.750
        G-Ring_Longitude:  -110.0
        G-Ring_Latitude:   45.750
        G-Ring_Longitude:  -109.50
        G-Ring_Latitude:   45.0
        G-Ring_Longitude:  -109.50
        G-Ring_Latitude:   45.0
        G-Ring_Longitude:  -110.250
        G-Ring_Latitude:   45.125
        G-Ring_Longitude:  -110.250
        G-Ring_Latitude:   45.125
        G-Ring_Longitude:  -111.0
        G-Ring_Latitude:   45.0
        G-Ring_Longitude:  -111.0
        G-Ring_Latitude:   45.0
        G-Ring_Longitude:  -111.125
        G-Ring_Latitude:   44.625
        G-Ring_Longitude:  -111.125
        G-Ring_Latitude:   44.625
        G-Ring_Longitude:  -111.50
        G-Ring_Latitude:   44.50
        G-Ring_Longitude:  -111.50
        G-Ring_Latitude:   44.50
        G-Ring_Longitude:  -111.625
  Keywords
    Theme
      Theme_Keyword_Thesaurus:  None
      Theme_Keyword:  Hydrography
      Theme_Keyword:  Lake
      Theme_Keyword:  Marsh
      Theme_Keyword:  Wetland
      Theme_Keyword:  Swamp
      Theme_Keyword:  Stream
      Theme_Keyword:  River
    Place
      Place_Keyword_Thesaurus:  None
      Place_Keyword:  Montana
  Access_Constraints:
        None
  Use_Constraints:
        Not for use at scales greater than 1:24000.
  Point_of_Contact
    Contact_Information
      Contact_Organization_Primary
        Contact_Organization:  Montana State Library
        Contact_Person:        Gerry Daumiller
      Contact_Position:        Senior GIS Programmer
      Contact_Address
        Address_Type:  mailing address
        Address:            P.O. Box 201800
        City:               Helena
        State_or_Province:  Montana
        Postal_Code:        59620-1800
        Country:            USA
      Contact_Voice_Telephone:          (406) 444-5358
      Contact_Facsimile_Telephone:      (406) 444-0581
      Contact_Electronic_Mail_Address:  gdaumiller@mt.gov
      Hours_of_Service:  Monday-Friday, 8-5, Mountain Time
  Browse_Graphic
    Browse_Graphic_File_Name:  http://nris.mt.gov/nsdi/nris/dlghd2.gif
    Browse_Graphic_File_Description:
      Simple image of the data set and/or its extent.
    Browse_Graphic_File_Type:  gif
  Native_Data_Set_Environment:
    Arc/Info coverages or ESRI shapefiles
 
Data_Quality_Information:
  Attribute_Accuracy
    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.
  Logical_Consistency_Report:
        Polygon and arc-node topology exist.
  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.
  Positional_Accuracy
    Horizontal_Positional_Accuracy
      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.
    Vertical_Positional_Accuracy
      Vertical_Positional_Accuracy_Report:
        Elevation of some polygons was read or estimated from the
        source quadrangles.  National Map Accuracy Standards
        require that 90 percent of the elevations be within half
        the contour interval of the source maps (contour interval is
        usually 20 or 40 feet).  For polygons with a value other
        than 0 for M619, the elevation is estimated.
  Lineage
    Source_Information
      Source_Citation
        Citation_Information
          Originator:
            National Mapping Division
            U.S. Geological Survey
          Publication_Date:  2001
          Title:  1:24,000-scale Digital Line Graphs
          Geospatial_Data_Presentation_Form:  map
          Publication_Information
            Publication_Place:  Reston, VA
            Publisher:  U.S. Geological Survey
          Other_Citation_Details:
            See http://nris.mt.gov/nsdi/nris/dlg1.dbf for publication
            dates of the various quadrangles.
      Source_Scale_Denominator:  24000
      Type_of_Source_Media:  unknown
      Source_Time_Period_of_Content
        Time_Period_Information
          Range_of_Dates/Times
            Beginning_Date:  1948
            Ending_Date:     1996
        Source_Currentness_Reference:  Publication Date
      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.
        The procedures used to do this are shown in the Arc/Info AML
        programs at http://nris.mt.gov/nsdi/nris/dlgaml1.zip.
      Source_Used_Citation_Abbreviation:  Q7.5
      Process_Date:  20020130
      Source_Produced_Citation_Abbreviation:  fin1
 
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method:  Vector
  Point_and_Vector_Object_Information
    SDTS_Terms_Description
      SDTS_Point_and_Vector_Object_Type:  Complete Chain
      Point_and_Vector_Object_Count:   11831
      SDTS_Point_and_Vector_Object_Type:  GT-polygon composed of chains
      Point_and_Vector_Object_Count:   6724
      SDTS_Point_and_Vector_Object_Type:  Area Point
      Point_and_Vector_Object_Count:   6719
 
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition
    Planar
      Grid_Coordinate_System
        Grid_Coordinate_System_Name: State Plane Coordinate System 1983
        State_Plane_Coordinate_System
          SPCS_Zone_Identifier: 2500
          Lambert_Conformal_Conic
            Standard_Parallel:  45
            Standard_Parallel:  49
            Longitude_of_Central_Meridian:  -109.5
            Latitude_of_Projection_Origin:  44.25
            False_Easting:   600000.00000
            False_Northing:  0.00000
      Planar_Coordinate_Information
        Planar_Coordinate_Encoding_Method:  coordinate pair
        Coordinate_Representation
          Abscissa_Resolution:  .1
          Ordinate_Resolution:  .1
        Planar_Distance_Units:  meters
    Geodetic_Model
      Horizontal_Datum_Name:  North American Datum of 1983
      Ellipsoid_Name:   Geodetic Reference System 80
      Semi-major_Axis:  6378137
      Denominator_of_Flattening_Ratio:  298.257
  Vertical_Coordinate_System_Definition
    Altitude_System_Definition
      Altitude_Datum_Name:  NGVD29
      Altitude_Resolution:  1
      Altitude_Distance_Units:  FEET
      Altitude_Encoding_Method:  Attribute values
 
Entity_and_Attribute_Information:
  Detailed_Description
    Entity_Type
      Entity_Type_Label:  LAKE.PAT
      Entity_Type_Definition:  Polygon Attribute Table
      Entity_Type_Definition_Source:  None
    Attribute
      Attribute_Label:  CODE
      Attribute_Definition:
        Code for hydrography polygon type
      Attribute_Definition_Source:  None
      Attribute_Domain_Values
        Enumerated_Domain
          Enumerated_Domain_Value:  0
          Enumerated_Domain_Value_Definition:  Land
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  110
          Enumerated_Domain_Value_Definition:  Stream
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  120
          Enumerated_Domain_Value_Definition:  Stream, Intermittent
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  130
          Enumerated_Domain_Value_Definition:  Stream, Rapids
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  140
          Enumerated_Domain_Value_Definition:  Stream, Submerged
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  210
          Enumerated_Domain_Value_Definition:  Ditch
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  300
          Enumerated_Domain_Value_Definition:  Lake or Pond
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  311
          Enumerated_Domain_Value_Definition:  Lake or Pond, Wetland
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  313
          Enumerated_Domain_Value_Definition:  Lake or Pond, Intermittent
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  410
          Enumerated_Domain_Value_Definition:  Reservoir
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  413
          Enumerated_Domain_Value_Definition:  Reservoir, Intermittent
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  420
          Enumerated_Domain_Value_Definition:  Inundation Area
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  422
          Enumerated_Domain_Value_Definition:  Inundation Area, Wetland
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  450
          Enumerated_Domain_Value_Definition:  Tailings Pond
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  460
          Enumerated_Domain_Value_Definition:  Aquaculture Pond
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  461
          Enumerated_Domain_Value_Definition:  Filtration Pond
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  810
          Enumerated_Domain_Value_Definition:  Glacier or Snowfield
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  823
          Enumerated_Domain_Value_Definition:  Spillway
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  830
          Enumerated_Domain_Value_Definition:  Wash or Ephemeral Drain
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  850
          Enumerated_Domain_Value_Definition:  Wetland
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  851
          Enumerated_Domain_Value_Definition:  Wetland, Submerged
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  852
          Enumerated_Domain_Value_Definition:  Wetland, Coincident Woods
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  860
          Enumerated_Domain_Value_Definition:  Sewage Disposal Pond
          Enumerated_Domain_Value_Definition_Source:  none
      Beginning_Date_of_Attribute_Values:  1948
      Ending_Date_of_Attribute_Values:  1996
    Attribute
      Attribute_Label:  RVIS
      Attribute_Definition:
        Photorevision code
      Attribute_Definition_Source:  None
      Attribute_Domain_Values
        Enumerated_Domain
          Enumerated_Domain_Value:  0
          Enumerated_Domain_Value_Definition:  Feature is not photo-revised
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  1
          Enumerated_Domain_Value_Definition:  Feature is photo-revised
          Enumerated_Domain_Value_Definition_Source:  none
      Beginning_Date_of_Attribute_Values:  1948
      Ending_Date_of_Attribute_Values:  1996
    Attribute
      Attribute_Label:  M619
      Attribute_Definition:
        Estimated elevation code
      Attribute_Definition_Source:  None
      Attribute_Domain_Values
        Enumerated_Domain
          Enumerated_Domain_Value:  0
          Enumerated_Domain_Value_Definition:  Elevation was printed on source map
          Enumerated_Domain_Value_Definition_Source:  none
          Enumerated_Domain_Value:  1
          Enumerated_Domain_Value_Definition:  Elevation was estimated from source map
          Enumerated_Domain_Value_Definition_Source:  none
      Beginning_Date_of_Attribute_Values:  1948
      Ending_Date_of_Attribute_Values:  1996
    Attribute
      Attribute_Label:  ELEV
      Attribute_Definition:
        Elevation, feet
          Elevation of zero indicates that elevation was not recorded.
      Attribute_Definition_Source:  None
      Attribute_Domain_Values
        Range_Domain
          Range_Domain_Minimum:  3797
          Range_Domain_Maximum:  11780
      Attribute_Units_of_Measure:  feet
      Attribute_Measurement_Resolution:  1
      Beginning_Date_of_Attribute_Values:  1948
      Ending_Date_of_Attribute_Values:  1996
      Attribute_Value_Accuracy_Information
        Attribute_Value_Accuracy:  20
        Attribute_Value_Accuracy_Explanation:
          Accuracy of 20 feet is based on National Map Accuracy
          Standards for maps with 40-foot contours.  Some of the
          source maps have 20- or 80-foot contours, and the accuracy
          there would be 10 or 40 feet.
 
Distribution_Information:
  Distributor
    Contact_Information
      Contact_Organization_Primary
        Contact_Organization:  Montana State Library
        Contact_Person:        Gerry Daumiller
      Contact_Position:        Senior GIS Programmer
      Contact_Address
        Address_Type:  mailing address
        Address:            P.O. Box 201800
        City:               Helena
        State_or_Province:  Montana
        Postal_Code:        59620-1800
        Country:            USA
      Contact_Voice_Telephone:          (406) 444-5358
      Contact_Facsimile_Telephone:      (406) 444-0581
      Contact_Electronic_Mail_Address:  gdaumiller@mt.gov
      Hours_of_Service:  Monday-Friday, 8-5, Mountain Time
  Distribution_Liability:
    Users must assume responsibility to determine the
    usability of this data for their purposes.
  Standard_Order_Process
    Non-digital_Form:
      Contact the State Library to see if the data is
      available as hardcopy maps.
    Fees:
      For-profit organizations must pay our costs to reproduce the
      data.  Fees can be waived if doing Government work.
  Standard_Order_Process
    Digital_Form
      Digital_Transfer_Information
        Format_Name:            Arc/Info Export
      Digital_Transfer_Option
        Online_Option
          Computer_Contact_Information
            Network_Address
              Network_Resource_Name:   http://nris.mt.gov/nsdi/nris/e00/dlghd2.zip
      Digital_Transfer_Option
        Offline_Option
          Offline_Media:     CD-ROM
          Recording_Format:  ISO 9660
    Digital_Form
      Digital_Transfer_Information
        Format_Name:     ESRI Shapefile
      Digital_Transfer_Option
        Online_Option
          Computer_Contact_Information
            Network_Address
              Network_Resource_Name:   http://nris.mt.gov/nsdi/nris/shape/dlghd2.zip
      Digital_Transfer_Option
        Offline_Option
          Offline_Media:     CD-ROM
          Recording_Format:  ISO 9660
    Fees:
      For-profit organizations must pay our costs to reproduce the
      data.  Fees can be waived if doing Government work.
 
Metadata_Reference_Information:
  Metadata_Date:  20020130
  Metadata_Contact
    Contact_Information
      Contact_Organization_Primary
        Contact_Organization:  Montana State Library
        Contact_Person:        Gerry Daumiller
      Contact_Address
        Address_Type:  mailing address
        Address:            P.O. Box 201800
        City:               Helena
        State_or_Province:  Montana
        Postal_Code:        59620-1800
        Country:            USA
      Contact_Voice_Telephone:          (406) 444-5358
      Contact_Facsimile_Telephone:      (406) 444-0581
      Contact_Electronic_Mail_Address:  gdaumiller@mt.gov
      Hours_of_Service:  Monday-Friday, 8-5, Mountain Time
  Metadata_Standard_Name:  FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version:  19940608
