Metadata for Montana 1:250,000 scale digital elevation model Metadata for Montana 1:250,000 scale digital elevation model
Identification Information:
Citation:
Originator: Defense Mapping Agency
Publication date: 08/08/1992
Title: Montana 1:250,000 scale digital elevation model
Publication place: Helena, Montana
Publisher: Montana State Library
Other citation details:
The former name of the data set on the NRIS web site was "el9"
Online linkage: https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Elevation/DEM_64m_1992.zip
Browse graphic file name: http://docs.msl.mt.gov/geoinfo/Images/Metadata/el9.gif

Abstract:
This is a 64-meter digital elevation model for Montana, from Defense Mapping Agency 3-arc second 1x1 degree 1:250,000 scale Digitial Elevation Models.

Time period of content:
Calendar date: 1970
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
PO Box 201800
Helena, Montana 59620-1800


Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov


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Data Quality Information:
Horizontal Positional Accuracy Report: 90 percent probability of 130 meter accuracy.

Vertical positional accuracy report:
90 percent probability of 30 meter accuracy.

See also: http://nsdi.usgs.gov/nsdi/wais/maps/dem1deg.HTML and http://edcwww.cr.usgs.gov/glis/hyper/guide/1_dgr_dem


Lineage:
Source information:
Originator: Defense Mapping Agency
Publication date: 1975
Title: 1-degree Digital Elevation Models
Publication place: Reston, VA
Publisher: U.S. Geologic Survey
Source scale denominator: 250000
Source contribution: The data set was derived from this source.
Calendar date: 1975

Process step:
Convert DEMs to Arc/Info format and merge all Montana data into one grid. Performed by the Montana Information Services Division. (This caused data to be resampled from original 64x95 meter grid to 64x64 meters.)
Process date: 1992
Process step:
Project data to Montana State Plane Coordinates. Clip grid to a six-mile buffer around Montana's boundary.
Process date: 08/01/1992
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Spatial Data Organization Information:
Raster object information:
Raster object type: Point
Row count: 8385
Column count: 14553
Vertical count: 1
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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
Altitude system definition:
Altitude datum name: NGVD29
Altitude resolution: 1
Altitude distance units: METERS
Altitude encoding method: Implicit coordinate
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Entity and Attribute Information:
Entity type label: DEM_64m_1992.tif.vat.dbf
Entity type definition: Value Attribute Table

Attribute label: OID
Attribute definition: Internal feature number

Attribute label: Value
Attribute definition: Elevation, meters

Attribute label: Count
Attribute definition: Number of pixels with this elevation

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Distribution Information:
Distributor:
Montana State Library
PO Box 201800
Helena, MT 59620-1800


Telephone: 406-444-5354
Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov
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: GeoTIFF
megabytes
Online option:
https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Elevation/DEM_64m_1992.zip
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Metadata Reference Information:
Metadata date: 01/13/2014
Metadata review date: 04/17/2013
Metadata review date: 09/29/2004
Metadata review date: 09/26/1996
Metadata review date: 11/27/1992
Metadata contact:
Montana State Library
PO Box 201800
Helena, Montana 59620-1800


Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov


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