Metadata for Montana Lakes from 2000 TIGER Files

- Identification Information
- Data Quality Information
- Spatial Reference Information
- Entity and Attribute Information
- Distribution Information
- Metadata Reference Information
- Download full XML Metadata

Identification Information:

Citation:
  Originator: Montana State Library
  Publication date: 07/01/2003
  Title: Montana Lakes from 2000 TIGER Files
  Publication place: Helena, Montana
  Publisher: Montana State Library
  Other citation details:
    The former name of the data set on the NRIS web site was "tgr_lakes"
  Online linkage: ftp://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Shapefiles/Lakes_TIGER_2003.zip
Abstract:
  Lakes selected from 2000 U.S. Census Bureau TIGER files. The lake names were enhanced using the U.S. Geological Survey Geographic Names Information System (GNIS), and the elevations were copied from the GNIS and interpolated from U.S. Geological Survey 30-meter digital elevation models.
Time period of content:
  Calendar date: 2000
  Currentness reference: publication date
Status:
  Progress: Complete
Access constraints: None
Use constraints:
  The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.
Point of contact:
  Montana State Library
  P.O. Box 201800
  Helena, Montana 59620-1800
  Telephone: 406-444-5354
  TDD/TTY telephone: 406-444-4799
  Fax: 406-444-0266
  E-Mail: geoinfo@mt.gov

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Data Quality Information:

Attribute accuracy report:
  Names were copied from the TIGER files and found to be inaccurate in over 1 percent of the cases where they existed. Names were copied automatically from the GNIS where the water body overlaid a GNIS point. GNIS names that were within 100 meters of a water body were copied to the nearest water body when visual inspection deemed it appropriate. There are likely many mistakes remaining in the water body names. Elevations copied from the GNIS and Digital Elevation Models have not been examined, except in cases where the two elevations for the same water body differed by over 1000 feet due to obvious blunders in the GNIS. The GNIS elevation was re-set to -9999 in these cases. The accuracy of the elevations is unknown.
Completeness report:
  This is a complete representation of the lakes and reservoirs in the TIGER files. Many lakes and reservoirs listed in the GNIS do not appear in this data, probably mostly due to being too small to appear on 1:100,000 scale maps.
Horizontal Positional Accuracy Report:
  Approximate horizontal accuracy is 51 meters, assuming source data meets National Map Accuracy Standards.
Lineage:
  Source information:
    Originator: U.S. Census Bureau
    Publication date: 2000
    Title: 2000 Tiger/Line Files
    Edition: 2000 Redistricting
    Publication place: Washington, DC
    Publisher: U.S. Census Bureau
    Source scale denominator: 100000
    Source contribution: The data was selected and copied from the TIGER files.
    Calendar date: 2000
  Source information:
    Originator: U.S. Geological Survey
    Publication date: 1992
    Title: Geographic Names Information System
    Publication place: Washington, DC
    Publisher: U.S. Geological Survey
    Source contribution:
      This is the source of the lake names and the first elevation field.
    Calendar date: 1992
  Source information:
    Originator: U.S. Geological Survey
    Publication date: 1999
    Title: 30-meter Digital Elevation Models
    Publication place: Washington, DC
    Publisher: U.S. Geological Survey
    Source contribution: This is the source of the second elevation field.
    Calendar date: 1999
  Process step:
    The TIGER/Line files were imported into a series of ArcView shapefiles using TGR2SHP version 4.1 by GIS Tools of Knoxville, TN. This step produced water body shapefiles for each county.
  Process date: 2001
  Process step:
    The individual county water shape files were projected to Montana State Plane Coordinates and combined into a single data set.
  Process date: 2001
  Process step:
    All large un-named polygons were compared to lakes, reservoirs, and islands in the GNIS and were assigned names wherever possible.
  Process date: 06/25/2001
  Process step:
    All adjacent water polygons with different names were examined and any mistakes were corrected. This happened frequently where a water body was crossed by a Census boundary line. It also happened where the Census Bureau demarked named bays and inlets from their main bodies of water. These demarcations and the names of the bays and the inlets were removed.
  Process date: 06/26/2001
  Process step:
    All adjacent polygons with the same name were dissolved into single polygons. In cases where an un-named glacier was adjacent to an un-named lake, this step would have merged them, and this was a mistake.
  Process date: 06/27/2001
  Process step:
    All un-named water polygons were automatically assigned the names and elevations of any lake point from the GNIS that was inside the polygon. All named polygons were assigned the elevation of the GNIS points that were inside them.
  Process date: 07/02/2001
  Process step:
    All water polygons that fell within 500 meters of a GNIS lake were examined. Where the water polygon was un-named and a GNIS point seemed to correspond to the water polygon, the GNIS name and elevation were copied to the polygon. Where the water polygon was named differently than a GNIS point that seemed to correspond to the polygon, the GNIS name and elevation were copied to the polygon.
  Process date: 07/03/2001
  Process step:
    The ELEV2 attribute for all lake polygons were interpolated from the digital elevation model.
  Process date: 07/03/2001

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Spatial Reference Information:

Horizontal coordinate system definition:
  Grid coordinate system name: State Plane Coordinate System
  SPCS zone identifier: 2500
  Lambert conformal conic:
  Standard parallel: 45.000000
  Standard parallel: 49.000000
  Longitude of central meridian: -109.500000
  Latitude of projection origin: 44.250000
  False easting: 600000.000000
  False northing: 0.000000
  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

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Entity and Attribute Information:

Entity type label: Lakes_TIGER_2003.dbf
Entity type definition: polygon attribute table
  Attribute label: FID
    Attribute definition: Shapefile sequence Identifier
  Attribute label: Shape
    Attribute definition: Feature Geometry
  Attribute label: NAME
    Attribute definition: Name
  Attribute label: ELEVATION
    Attribute definition:
      Elevation from GNIS, in feet. Set to -9999 if no GNIS feature corresponds to the polygon.
  Attribute label: ELEV2
    Attribute definition: Elevation from 30-meter DEM, in feet.
  Attribute label: ACRES
    Attribute definition: Area of polygon in acres
  Attribute label: SQMILES
    Attribute definition: Area of polygon in square miles
  Attribute label: COUNTIES
    Attribute definition: County or list of counties that the lake is in.
  Attribute label: SUBBASINS
    Attribute definition:
      Name of sub-basin (4th-code hydrolgic unit), or list of sub-basins, that the lake is in.

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Distribution Information:

Distributor:
  Montana State Library
  PO Box 201800
  Helena, MT 59620-1800
  Telephone: 406-444-5354
  TDD/TTY telephone: 406-444-4799
  Fax: 406-444-0266
  E-Mail: geoinfo@mt.gov
Resource description: Downloadable Data
Distribution liability:
  The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.
Standard order process:
  Digital form:
    Format name: ESRI Shapefile
    Online option:
    ftp://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Shapefiles/Lakes_TIGER_2003.zip

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Metadata Reference Information:

Metadata date: 01/31/2014
Metadata review date: 04/17/2013
Metadata review date: 01/23/2012
Metadata review date: 07/03/2001
Metadata contact:
  Montana State Library
  P.O. Box 201800
  Helena, Montana 59620-1800
  Telephone: 406-444-5354
  TDD/TTY telephone: 406-444-4799
  Fax: 406-444-0266
  E-Mail: geoinfo@mt.gov

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