Metadata for Montana Subbasins, 1991 Metadata for Montana Subbasins, 1991
Identification Information:
Citation:
Originator: Montana State Library
Publication date: 03/09/1991
Title: Montana Subbasins, 1991
Publication place: Helena, Montana
Publisher: Montana State Library
Other citation details: The former name of this datasest was "hd52".
Larger Work Citation:
Title: Montana Watershed Boundary Database, 2006 Version
Online linkage: http://mslapps.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={0077A7D3-F6C3-4D08-9837-410E79A12FCC}
Browse graphic file name: https://ftpgeoinfo.msl.mt.gov/Documents/Maps/Individual/19950309_484_1995_MTRiverBasins.gif

Abstract:
Sub-basin (4th-code, or 8-digit) level, hydrologic units of Montana. These data were received by the State Library from the Portland Office of the Bonneville Power Administration in 1991. We believe the data were developed from 1:2,000,000 scale maps in the 1972 National Atlas of the United States.

Time period of content:
Calendar date: 1972
Currentness reference: Publication Date
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: Montana Relay 711
Fax: 406-444-0266
E-Mail: geoinfo@mt.gov


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Data Quality Information:
Horizontal Positional Accuracy Report:
Poor. We know that some basin boundaries cross streams shown on 1:100,000 scale Digital Line Graphs. Approximate accuracy of 1:2,000,000 scale data is 1000 meters.

Lineage:
Source information:
Originator: Bonneville Power Administration
Publication date: Unpublished material
Title: River basins
Other citation details: Portland, Oregon
Source scale denominator: 1000000
Type of source media: Arc/Info coverage e00 file
Calendar date: 1991

Process step:
Project BPA river basin data to Montana Albers equal area coordinate system.
Process date: 03/09/1991
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Spatial Data Organization Information:
Point and vector object information:
SDTS object type: GT-polygon composed of chains
SDTS object count: 109
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Spatial Reference Information:
Horizontal coordinate system definition:
Grid coordinate system name: State Plane Coordinate System 1983
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 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: SubBasin1991
Entity type definition: Polygon Attribute Table

Attribute label: FID
Attribute definition: Internal Feature ID number

Attribute label: Shape
Attribute definition: Feature coordinates

Attribute label: Area
Attribute definition: Area of feature in square meters

Attribute label: Perimeter
Attribute definition: Perimeter of feature in meters

Attribute label: HD52_
Attribute definition:
Internal Feature ID from original coverage version of the data

Attribute label: HD52_ID
Attribute definition: User ID from original coverage version of the data

Attribute label: HUC
Attribute definition: 8-digit Hydrologic Unit Code (4th-code)

Attribute label: BASIN_NAME
Attribute definition: Name of River Basin

Attribute label: ACRES
Attribute definition: Area, acres

Attribute label: HUC4
Attribute definition: 4-digit Hydrologic Unit Code

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


Telephone: 406-444-5354
TDD/TTY telephone: Montana Relay 711
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.
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Metadata Reference Information:
Metadata date: 08/14/2014
Metadata review date: 09/29/2004
Metadata review date: 11/15/1994
Metadata review date: 10/05/1996
Metadata contact:
Montana State Library
P.O. 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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