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County Commissioners 2013

Tags
boundaries, boundaries, census, legislature, districts, 2013 redistricting


Summary

These data show the Maine County Commissioners districts as approved by the State Legislature in 2013 (2013 PL 270), based on data from the Maine towns boundary dataset (METWP24) and the US Census 2010 block data. Both are 1:24,000 scale data sources. These districts become effective December 3, 2014 (127th Legislature).

Description

The Maine Constitution requires the Legislature to reapportion districts every ten years, using the most recent census data. The State of Maine has typically done this the 3rd year following the Census. This dataset indicates the result of the 2013 reapportionment for the County Commissioners.These data are derived primarily from the Maine towns boundary dataset to indicate the County Commissioners districts starting with the 127th Legislature. Since many districts are defined by census tracts and blocks, where these boundaries split up towns, the lines from the census data were used to do so. These districts become public law on October 9, 2013, but the legislation specifically delays the implementation of these districts until the 127th Legislature (Dec 3 2014).These data are based on 1:24,000 base data and will inherit the resulting spatial inaccuracies of the source data. These data are intended for mapping at scales suitable for 1:24,000 scale and are not intended to be a ground survey of precise boundaries. Typically boundaries follow town lines, or roads or water features. In some cases these lines may have have slight variations from the actual features which delineate the district.

Credits

Use limitations

Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002 and coordinated by MEGIS

Extent

West  -71.166757    East  -66.781750
North  47.460074    South  42.909625

Scale Range
Maximum (zoomed in)  1:5,000
Minimum (zoomed out)  1:150,000,000

ArcGIS Metadata 

Topics and Keywords 

*Content type  Downloadable Data


Citation 

Title County_commissioners_2013
Publication date 2013-09-23 00:00:00


Presentation formats* digital map
FGDC geospatial presentation format  vector digital data


Citation Contacts 

Responsible party
Organization's name Maine Office of Geographic Information Systems
Contact's role  originator


Contact information
Phone
Voice 207-624-7700

Address
Type postal
Delivery point State House Station #145
City Augusta
Administrative area Maine
Postal code 04333
Country USA
e-mail addressOIT.Customer-Support@maine.gov

Hours of service 9 am to 5 pm EST
Contact instructions
Monday through Friday


Resource Details 

Dataset languages  English (UNITED STATES)
Dataset character set  utf8 - 8 bit UCS Transfer Format


Status  completed
Spatial representation type* vector


*Processing environment Microsoft Windows Server 2003 Version 5.2 (Build 3790) Service Pack 2; Esri ArcGIS 10.1.1.3143


ArcGIS item properties
*Name GISVIEW.MEGIS.County_commissioners_2013
*Location Server=sql-gisview-prod.som.w2k.state.me.us; Service=sde:sqlserver:sql-gisview-prod.som.w2k.state.me.us,1633; Database=GISVIEW; User=MEGIS; Version=dbo.DEFAULT
*Access protocol ArcSDE Connection

Extents 

Extent
Geographic extent
Bounding rectangle
Extent type  Extent used for searching
*West longitude -71.166757
*East longitude -66.781750
*North latitude 47.460074
*South latitude 42.909625
*Extent contains the resource Yes

Extent in the item's coordinate system
*West longitude 336630.281200
*East longitude 667255.187400
*South latitude 4752815.499700
*North latitude 5256292.500000
*Extent contains the resource Yes

Resource Maintenance 

Resource maintenance
Update frequency  not planned


Resource Constraints 

Constraints
Limitations of use
Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002 and coordinated by MEGIS

Spatial Reference 

ArcGIS coordinate system
*Type Projected
*Geographic coordinate reference GCS_North_American_1983
*Projection NAD_1983_UTM_Zone_19N
*Coordinate reference details
Projected coordinate system
Well-known identifier 26919
X origin -5120900
Y origin -9998100
XY scale 10000
Z origin 0
Z scale 1
M origin 0
M scale 1
XY tolerance 0.001
Z tolerance 0.001
M tolerance 0.001
High precision true
Latest well-known identifier 26919
Well-known text PROJCS["NAD_1983_UTM_Zone_19N",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-69.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",26919]]

Reference system identifier
*Value 26919
*Codespace EPSG
*Version 7.11.2


Spatial Data Properties 

Vector
*Level of topology for this dataset  geometry only


Geometric objects
Feature class name GISVIEW.MEGIS.County_commissioners_2013
*Object type  composite
*Object count 58



ArcGIS Feature Class Properties
Feature class name GISVIEW.MEGIS.County_commissioners_2013
*Feature type Simple
*Geometry type Polygon
*Has topology FALSE
*Feature count 58
*Spatial index TRUE
*Linear referencing FALSE



Distribution 

Distributor
Contact information
Organization's name Maine Office of Geographic Information Systems
Contact's position GIS Coordinator
Contact's role  distributor


Contact information
Phone
Voice 207-624-7700

Address
Type postal
Delivery point State House Station #145
City Augusta
Administrative area Maine
Postal code 04333
Country USA
e-mail addressOIT.Customer-Support@maine.gov

Hours of service 9 am to 5 pm EST
Contact instructions
Monday through Friday




Fields 

Details for object GISVIEW.MEGIS.County_commissioners_2013 
*Type Feature Class
*Row count 58
Definition
The district for the County Commissioners
Definition source
MEGIS


Field OBJECTID
 
*Alias OBJECTID
*Data type OID
*Width 4
*Precision 10
*Scale 0
Field description
Internal feature number.
Description source
Esri
Description of values Sequential unique whole numbers that are automatically generated.




Field COUNTY
 
*Alias COUNTY
*Data type String
*Width 15
*Precision 0
*Scale 0
Field description
County Name
Description source
MEGIS


Field CC2013
 
*Alias CC2013
*Data type SmallInteger
*Width 2
*Precision 5
*Scale 0
Field description
The district for the County Commissioners
Description source
MEGIS


Field Shape
 
*Alias Shape
*Data type Geometry
*Width 4
*Precision 0
*Scale 0
Field description
Feature geometry.
Description source
Esri
Description of values Coordinates defining the features.




Field Shape.area
 
*Alias Shape.area
*Data type Double
*Width 0
*Precision 0
*Scale 0




Field Shape.len
 
*Alias Shape.len
*Data type Double
*Width 0
*Precision 0
*Scale 0






Metadata Details 

*Metadata language English (UNITED STATES)
*Metadata character set  utf8 - 8 bit UCS Transfer Format


Scope of the data described by the metadata* dataset
Scope name* dataset


*Last update 2013-11-25


ArcGIS metadata properties
Metadata format ArcGIS 1.0
Standard or profile used to edit metadata FGDC


Created in ArcGIS for the item 2013-09-23 12:38:17
Last modified in ArcGIS for the item 2013-11-25 90:74:00


Automatic updates
Have been performed Yes
Last update 2013-11-25 09:02:59


Metadata Contacts 

Metadata contact
Organization's name Maine Office of Geographic Information Systems
Contact's position GIS Coordinator
Contact's role  point of contact


Contact information
Phone
Voice 207-624-7700

Address
Type postal
Delivery point State House Station #145
City Augusta
Administrative area Maine
Postal code 04333
Country USA
e-mail addressOIT.Customer-Support@maine.gov

Hours of service 9 am to 5 pm EST
Contact instructions
Monday through Friday


Thumbnail and Enclosures 

FGDC Metadata (read-only) 

Identification 

Citation
Citation Information
OriginatorMaine Office of Geographic Information Systems (MEGIS), GIS Coordinator
Publication Date2013-09-20
Title
County_commissioners_2013
Geospatial Data Presentation Formvector digital data
Online LinkageServer=sql-gisview-prod.som.w2k.state.me.us; Service=sde:sqlserver:sql-gisview-prod.som.w2k.state.me.us,1633; Database=GISVIEW; User=megis; Version=dbo.DEFAULT

Description
Abstract
                            The Maine Constitution requires the Legislature to reapportion districts every ten years, using the most recent census data. The State of Maine has typically done this the 3rd year following the Census. This dataset indicates the result of the 2013 reapportionment for the County Commissioners.These data are derived primarily from the Maine towns boundary dataset to indicate the County Commissioners districts starting with the 127th Legislature. Since many districts are defined by census tracts and blocks, where these boundaries split up towns, the lines from the census data were used to do so. These districts become public law on October 9, 2013, but the legislation specifically delays the implementation of these districts until the 127th Legislature (Dec 3 2014).These data are based on 1:24,000 base data and will inherit the resulting spatial inaccuracies of the source data. These data are intended for mapping at scales suitable for 1:24,000 scale and are not intended to be a ground survey of precise boundaries. Typically boundaries follow town lines, or roads or water features. In some cases these lines may have have slight variations from the actual features which delineate the district.
                          
Purpose
                            These data show the Maine County Commissioners districts as approved by the State Legislature in 2013 (2013 PL 270), based on data from the Maine towns boundary dataset (METWP24) and the US Census 2010 block data.  Both are 1:24,000 scale data sources.  These districts become effective December 3, 2014 (127th Legislature).
                          
Time Period of Content
Time Period Information
Single Date/Time
Calendar Date2013-10-09
Currentness Reference
                            The legislation becomes effective 10/9/2013
                          
Status
ProgressComplete
Maintenance and Update FrequencyNone planned

Spatial Domain
Bounding Coordinates
West Bounding Coordinate-71.166757
East Bounding Coordinate-66.781750
North Bounding Coordinate47.460074
South Bounding Coordinate42.909625

Keywords
Theme
Theme Keyword ThesaurusISO 19115 Topic Categories
Theme Keywordboundaries

Theme
Theme Keyword ThesaurusNone
Theme Keywordboundaries
Theme Keywordcensus
Theme Keywordlegislature
Theme Keyworddistricts
Theme Keyword2013 redistricting

Access Constraints
                        None
                      
Use Constraints
                        Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. The best use of data mapped at scales of 1:500,000 and 1:250,000 is in statewide planning and studies; at 1:100,000 in regional planning and studies; at 1:62,500 and 1:24,000 in detailed studies and local planning; and at 1:12,000 and 1:5,000 or larger scales in parcel level studies and detailed local planning. In the use of Maine GIS data, please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. Updates, corrections, and feedback, incorporated in the Maine GIS database are made in accordance with "Data Standards for Maine Geographic Information Systems", 2002 and coordinated by MEGIS
                      
Point of Contact
Contact Information
Contact Organization Primary
Contact OrganizationMaine Office of Geographic Information Systems (MEGIS)
Contact PositionGIS Coordinator
Contact Address
Address Typemailing
AddressState County Commissioners Station #145
CityAugusta
State or ProvinceMaine
Postal Code04333
CountryUNITED STATES

Contact Voice Telephone207-624-7700
Contact Electronic Mail AddressOIT.Customer-Support@maine.gov
Hours of Service9 am to 5 pm EST
Contact Instructions
                                Monday through Friday
                              

Data Set Credit
                        Maine Office of GIS
                      
Native Data Set Environment
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.4095

Data Quality 

Logical Consistency Report
                        The horizontal accuracy of these data are within the acceptable tolerances for 1:24,000 scale mapping.
                      
Completeness Report
                        Completeness was evaluated by querying for NULL attributes and ensuring all polygons were attributed.  Visual inspections also were conducted.
                      
Lineage
Process Step
Process Description
                                These data derive primarily from the METWP24 boundary data for Maine.  Where the legislation indicates that towns or entire counties are part of a district, METWP was simply attributed for these districts.  Where the legislation provides census tracts or blocks or subunits as the district description, the 2010 census blocks were used.

First the legislation, which is a long string of towns and census units, was parsed out into a text file with a standard format, such as this:

SD24
COUNTY
Cumberland
TOWN
Brunswick; Freeport; Harpswell; North Yarmouth; Pownal

A Python script was written which then read this datafile and selected out the corresponding towns or census units and computed their district.

Both datasets were then dissolved to the district attribute and the two resulting datasets were manually merged to preserve the town boundaries from METWP24 while splitting towns along the census lines.

This methodology was repeated for each of the three datasets: Senate, County Commissioners, and County Commissioners districts.
                              
Process Date2013-09-20


Process Step
Process Description
                                Metadata imported.
                              
Source Used Citation Abbreviation
C:\WorkSpace\county_2013.shp.xml
Process Date2013-09-23
Process Time12:38:17


Spatial Reference 

Horizontal Coordinate System Definition
Planar
Planar Coordinate Information
Planar Coordinate Encoding Methodcoordinate pair
Coordinate Representation
Abscissa Resolution0.000100
Ordinate Resolution0.000100
Planar Distance Unitsmeters

Geodetic Model
Horizontal Datum NameNorth American Datum of 1983
Ellipsoid NameGeodetic Reference System 80
Semi-major Axis6378137.000000
Denominator of Flattening Ratio298.257222

Vertical Coordinate System Definition
Altitude System Definition
Altitude Resolution1.000000
Altitude Encoding MethodExplicit elevation coordinate included with horizontal coordinates

Entities and Attributes 

Distribution Information 

Distributor
Contact Information
Contact Organization Primary
Contact OrganizationMaine Office of Geographic Information Systems (MEGIS)
Contact PositionGIS Coordinator
Contact Address
Address Typemailing
AddressState County Commissioners Station #145
CityAugusta
State or ProvinceMaine
Postal Code04333
CountryUNITED STATES

Contact Voice Telephone207-624-7700
Contact Electronic Mail AddressOIT.Customer-Support@maine.gov
Hours of Service9 am to 5 pm EST
Contact Instructions
                                Monday through Friday
                              

Resource DescriptionDownloadable Data
Distribution Liability
                        These data are provided under the MEGIS data license.
                      
Standard Order Process
Digital Form
Digital Transfer Information
Format NameShapefile
Format Version Number10.1

Metadata Reference 

Metadata Date2013-09-23
Metadata Contact
Contact Information
Contact Organization Primary
Contact OrganizationMaine Office of Geographic Information Systems (MEGIS)
Contact PersonREQUIRED: The person responsible for the metadata information.
Contact PositionGIS Coordinator
Contact Address
Address Typemailing
AddressState County Commissioners Station #145
CityAugusta
State or ProvinceMaine
Postal Code04333
CountryUNITED STATES

Contact Voice Telephone207-624-7700
Contact Electronic Mail AddressOIT.Customer-Support@maine.gov
Hours of Service9 am to 5 pm EST
Contact Instructions
                                Monday through Friday
                              

Metadata Standard NameFGDC Content Standards for Digital Geospatial Metadata
Metadata Standard VersionFGDC-STD-001-1998
Metadata Time Conventionlocal time