Metadata for Montana 1995-2003 Legislative Districts Metadata for Montana 1995-2003 Legislative Districts

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Identification Information:

Citation:

Originator: Montana State Library
Publication date: 03/27/1993
Title: Montana 1995-2003 Legislative Districts
Other citation details:: The former name of the data set on the NRIS web site was "ab42"
Online linkage: https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Shapefiles/Legislature1995.zip

Browse graphic file name: https://ftpgeoinfo.msl.mt.gov/Documents/Maps/Thumbnails/19950429_585_thumb.jpg
Browse graphic file description: Thumbnail image of Montana Legislative Districts map

Browse graphic file name: https://ftpgeoinfo.msl.mt.gov/Documents/Maps/Individual/19950429_585_1994_MTLegisDist.gif
Browse graphic file description: Montana Legislative Districts map

Abstract:

Montana Legislative Districts for the 1995 through 2003 Legislatures. Each polygon represents a House District. Senate Districts are each composed of two House Districts, whose district numbers equal twice the Senate District number and twice the Senate District number, minus one.

The official boundaries from the Montana Legislative Council were modified at the State Library to remove parts of a few long, skinny Census Blocks that are in rivers.

Time period of content:

Beginning date: 1995
Ending date: 2003
Currentness reference: Publication Date

Status:

Progress: Complete
Maintenance and update frequency:: Each legislative district alignment is valid for 5 Legislatures. A separate data set will be available every 10 years for the appropriate Legislatures.

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

Data Quality Information:

Completeness report: The data set is complete.

Horizontal Positional Accuracy Report: Accuracy of 1:100,000 scale maps is approximately 50 meters.

Lineage:

Source information:

Originator: Montana Legislative Council
Publication date: 03/27/1993
Title: Montana 1995 Legislative Districts
Source scale denominator: 100000
Calendar date: 03/27/1993

Source information:

Originator: U.S. Census Bureau
Publication date: 1990
Title: 1990 TIGER/Line Files
Edition: 1990 Census
Source scale denominator: 100000
Source contribution: This is the source of the data coordinates
Calendar date: 1990

Process step:

Convert TIGER files to ARC/INFO format and create Census Block coverages. Performed by GeoResearch, Billings, MT.


Process date: 08/01/1992

Process step:

Use the ESRI redistricting program to combine Census Blocks into legislative districts. Performed by the Montana Legislative Council.

Process step:

Edit districts so that long, narrow blocks inside rivers are eliminated.


Process date: 03/27/1993

Spatial Data Organization Information:

Point and vector object information:

SDTS object type: G-polygon

SDTS object count: 100

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

Entity and Attribute Information:

Entity type label: Legislature1995.dbf

Entity type definition: Polygon Attribute Table

Attribute label: FID

Attribute definition: Shapefile sequence number

Attribute label: Shape

Attribute definition: Feature geometry

Attribute label: Area

Attribute definition: area of the polygon in square meters

Attribute label: Perimeter

Attribute definition: perimeter of the polygon in meters

Attribute label: AB42_

Attribute definition: Sequence number from original coverage version of the data

Attribute label: AB42_ID

Attribute definition: ID number from original coverage version of the data

Attribute label: DISTRICT

Attribute definition:: Redistricting software ID number
This is the number used by ESRI's redistricting application that was used to construct the districts.
Range domain minimum: 1
Range domain maximum: 178

Attribute label: DISTNUM

Attribute definition:: Commisioners district ID
This is the number used by the Districting and and Apportionment Commission for the district when they were considering different plans.
Range domain minimum: 100
Range domain maximum: 576

Attribute label: HOUSEDIST

Attribute definition:: House District Number
This is the number of the Montana House District. Each Senate District is formed from two House Districts whose numbers equal twice the Senate number and twice the Senate number, minus 1.
Range domain minimum: 1
Range domain maximum: 100

Attribute label: SENATEDIST

Attribute definition:: Senate District Number
This is the Montana Senate District Number. Each Senate District is composed of two House District, whose numbers equal twice the Senate District Number, and twice the Senate District Number, minus one.
Range domain minimum: 1
Range domain maximum: 50

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:

Standard order process:

Digital form:

Metadata Reference Information:

Metadata date: 01/07/2014

Metadata review date: 04/17/2013

Metadata review date: 09/29/2004

Metadata review date: 06/30/2001

Metadata review date: 09/26/1996

Metadata review date: 02/28/1994

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