Metadata for Montana Public Land Survey Lines from 1:100,000 scale BLM maps. Metadata for Montana Public Land Survey Lines from 1:100,000 scale BLM maps.
Identification Information:
Citation:
Originator: Montana State Library
Publication date: 03/24/1996
Title:
Montana Public Land Survey Lines from 1:100,000 scale BLM maps.
Publication place: Helena, Montana
Publisher: Montana State Library
Other citation details:
The former name of the data set on the NRIS web site was "ab106"
Online linkage: http://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Shapefiles/plss100k.zip

Abstract:
Townships, Ranges, and Sections in Montana, including section lines "protracted" through unsurveyed areas by the BLM or Forest Service.
Purpose:
For display of Public Land Survey and for location of features whose legal descriptions are known. More accurate section location data, along with quarter-quarter section data and government lot data, is available in the Geographic Coordinate Database (GCDB). The GCDB, however, does not include data for every section in Montana.

Time period of content:
Beginning date: 1975
Ending date: 1993
Currentness reference: Publication Date
Status:
Progress: Complete
Access constraints: None
Use constraints:
Not for use at scales greater than 1:100000. Not for accurate determination of section corner or property line locations.

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:
Attribute accuracy report:
Township and Range numbers were checked and corrected at the State Library until they were accurate. No errors in section numbers were found when they were spot-checked at the Library, but not every section was checked.

Horizontal Positional Accuracy Report:
Approximate horizontal accuracy is 51 meters, assuming source data meets National Map Accuracy Standards.

Lineage:
Source information:
Originator:
National Mapping Division
U.S. Geological Survey
Publication date: 1975
Title: 1:100,000-scale Quadrangle Public Land Survey mylars
Publication place: Reston, VA
Publisher: U.S. Geological Survey
Source scale denominator: 100000
Type of source media: mylar
Source contribution: All of the coordinates were collected from these maps.
Beginning date: 1975
Ending date: 1993
Source information:
Originator:
U.S. Bureau of Land Management
Montana Office
Publication date: Unpublished material
Title: Public Land Survey Arc/Info coverages
Other citation details: 222 North 32nd Street, Billings, MT 59109 406-255-2953
Source scale denominator: 100000
Type of source media: Arc/Info E00 files on 8mm tape
Source contribution: The data is an edited copy of this source.
Calendar date: 03/21/1996

Process step:
Digitize the lines from the USGS mylar maps and code the arcs and polygons. This was performed by the BLM office in Billings using ADS software on their PRIME minicomputer.
Process date: 06/01/1994
Process step:
Correct the projection definition of all BLM data and convert any single-precision coverages to double precision. Project coverages from UTM zone 12 coordinates to Albers.
Process date: 03/21/1996
Process step:
Parse the LABEL item in the BLM PCODE file into separate Town, Range, and Section items in the PAT.
Process date: 03/21/1996
Process step:
Add polygon attributes to BLM coverages that had no polygon attributes or no PCODE files.
Process date: 03/21/1996
Process step:
View township, range, and section attributes of every coverage and correct errors.
Process date: 03/21/1996
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Spatial Data Organization Information:
Point and vector object information:
SDTS object type: G-polygon
SDTS object count: 159335
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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: 6378137.0
Denominator of flattening ratio: 298.257
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Entity and Attribute Information:
Entity type label: PLSS.AAT
Entity type definition: Arc Attribute Table

Attribute label: TYPE
Attribute definition: Code for Land Survey Line Type


Attribute
Value
Definition of
Attribute Value
1 Section Line
2 State Line
3 Township Line
4 Principal Meridian
5 Base Line

Entity type label: PLSS.PAT
Entity type definition: Polygon Attribute Table

Attribute label: TOWN
Attribute definition: Township Number
Range domain minimum: 1
Range domain maximum: 38

Attribute label: N/S
Attribute definition: Township North or South Designation


Attribute
Value
Definition of
Attribute Value
N Township North of the Base Line
S Township South of the Base Line

Attribute label: RANGE
Attribute definition: Range Number
Range domain minimum: 1
Range domain maximum: 65

Attribute label: E/W
Attribute definition: Range East or West Designation


Attribute
Value
Definition of
Attribute Value
E Range East of the Principal Meridian
W Range West of the Principal Meridian

Attribute label: SECTION
Attribute definition: Section Number
Range domain minimum: 1
Range domain maximum: 36

Attribute label: TRS
Attribute definition:
Combined Township, Range, Section
This is a redefined item to create a unique ID for each section. Examples: "37.0N 31.0W 3" is Township 37 North, Range 31 West, section 3. "27.0N 21.5W23" is Township 27 North, Range 21 1/2 West, Section 23.

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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: ESRI Coverage Export file
megabytes
Online option:
http://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/E00/plss100k.zip

Standard order process:
Digital form:
Format name: ESRI Shapefile
megabytes
Online option:
http://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Shapefiles/plss100k.zip
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Metadata Reference Information:
Metadata date: 01/06/2014
Metadata review date: 04/17/2013
Metadata review date: 09/29/2004
Metadata review date: 03/21/2002
Metadata review date: 05/18/1996
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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