elecserv

Identification Information

Citation Information

Originator	Maine Public Utilities Commission (MEPUC), Maine Office of Geographic Information Systems(MEGIS) (comp.)
Publication Date	19990226
Publication Time	Unknown
Title	elecserv
Edition	V1.1
Geospatial Data Presentation Form	vector digital data
Series Name	Maine GIS
Issue Identification	SDE server; Internet Data Catalog
Publication Place	Augusta ME
Publisher	Maine Office of Geographic Information Systems
Other Citation Details	1:100000
Online Linkage	http://megis.maine.gov/catalog/
Beginning Date	1994
Ending Date	19980522

Abstract

ELECSERV contains the service areas of electric power distributors in Maine, mapped at an approximate 1:100,000 scale. Central Maine Power (CMP) is the originator of this data. The polygon item COMPANY contains the name of the power company affiliated with the service area. In 1998, MEGIS staff used data from Maine Public Utilities Commission to update the coverage and added the item DISTRICT to show districts in CMP and Bangor Hyro-Electric service areas. Data sources for the dataset vary in scale from 1:100,000 to smaller scales. Use of the data at scales greater than 1:100,000 is strongly discouraged. Service area and district boundaries are approximate and do not represent legal boundaries.

Purpose

To show the service areas of electric power distributors in Maine. Service area and district boundaries are approximate and do not represent legal boundaries.

Time Period of Content

Beginning Date	1994
Beginning Time	Unknown
Ending Date	19980522
Ending Time	Unknown
Currentness Reference	source dates

Status

Progress	Complete
Maintenance and Update Frequency	Unknown

Bounding Coordinates

West Bounding Coordinate	-71.00635
East Bounding Coordinate	-66.85005
North Bounding Coordinate	47.43994
South Bounding Coordinate	43.05768

Keywords

Theme	power, infrastructure (Maine GIS Thesaurus-Theme)
Theme	utilitiesCommunication (ISO Keyword Thesaurus)
Place	Maine, United States (Maine GIS Thesaurus-Place)
Stratum	human dimensions (GCMD Parameter Keyword)

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.

Contact Organization

(MEPUC) Maine Public Utilities Commission

Address Type

mailing and physical address

Address

242 State Street SHS 18

City

Augusta

State or Province

Postal Code

04333-0018

Country

USA

Contact Voice Telephone

207 287 3831

Contact Facsimile Telephone

207 187 1039

Contact Electronic Mail Address

maine.puc@maine.gov

Hours of Service

0800 - 1700 EST

Data Set Credit

Credit should always be given to the data source and/or originator when the data is transferred or printed.

Native Data Set Environment

Maine Office of Information Technology (OIT) Oracle 9i, Maine Office of Geographic Information Systems (MEGIS), Maine GIS Internet Data Catalog http://megis.maine.gov/catalog/

Attribute Accuracy Report

Attribute coding in this dataset was verified at MEGIS by visual check of company and district names against CMP maps.

Logical Consistency Report

Data set meets "Data Standards for Maine Geographic Information Systems, March 1990"

Completeness Report

Data set is complete. 465 polygons contain no labels.

Horizontal Positional Accuracy Report

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

Horizontal Positional Accuracy Value

Horizontal Positional Accuracy Explanation

Compilation base data meets National Map Accuracy Standards for 1:100,000 scale.

Vertical Positional Accuracy Report

Not applicable

Citation Information

Originator	U.S. Geological Survey (USGS)
Publication Date	1985
Publication Time	Unknown
Title	(100kdlg) 1:100,000 scale Digital Line Graphs
Geospatial Data Presentation Form	map
Series Name	Digital Line Graphs (DLG)
Issue Identification	Intermediate DLG-3
Publication Place	Reston VA
Publisher	U.S. Geological Survey
Other Citation Details	Digital line graph (DLG) data are digital representations of cartographic information. DLGs of map features are converted to digital form from maps and related sources. Intermediate-scale DLG data are derived from USGS 1:100,000-scale 30- by 60-minute quadrangle maps. If these maps are not available, Bureau of Land Management planimetric maps at a scale of 1:100,000 are used. Intermediate-scale DLGs are sold in five categories: (1) Public Land Survey System; (2) boundaries; (3)transportation; (4) hydrography; and (5) hypsography. All DLG data distributed by the USGS are DLG - Level 3 (DLG-3), which means the data contain a full range of attribute codes, have full topological structuring, and have passed certain quality-control checks. DLGs depict information about geographic features on or near the surface of the Earth, terrain, and political and administrative units. These data were collected as part of the National Mapping Program.
Online Linkage
Beginning Date	19840101
Beginning Time	Unknown
Ending Date	Present
Ending Time	Unknown

Source Scale Denominator

100000

Type of Source Media

digital tape media

Beginning Date

19840101

Beginning Time

Unknown

Ending Date

Present

Ending Time

Unknown

Source Currentness Reference

publication date

Source Citation Abbreviation

100kdlg

Source Contribution

Coincident features were used from USGS 1:100,000 digital line graphs.

Process Description

A digital file at what appears to be 1:100000 scale from CMP was converted to ARC/INFO at MEGIS to show service areas of electric power distributors in Maine. All lines and company designations were provided by CMP.

Process Date

19940112

Contact Organization

(MEGIS) Maine Office of Geographic Information Systems

Contact Person

GIS Coordinator

Contact Position

GIS Coordinator

Address Type

mailing address

Address

State House Station 174

City

Augusta

State or Province

Postal Code

04333-0174

Country

USA

Contact Voice Telephone

207 624-7700

Contact Facsimile Telephone

207 287-3842

Hours of Service

Monday through Friday 0800 - 1700 EST

Process Description

The coverage was updated to include the sub-districts of Central Maine Power Co. and Bangor Hydro-Electric Co. Completed by 10/01/1998. Coincident features were used from the USGS 1:100,000 DLG data.

Source Used Citation Abbreviation

100kdlg

Process Date

19981001

Contact Organization

(MEGIS) Maine Office of Geographic Information Systems

Contact Person

GIS Coordinator

Contact Position

GIS Coordinator

Address Type

mailing address

Address

State House Station 174

City

Augusta

State or Province

Postal Code

04333-0174

Country

USA

Contact Voice Telephone

207 624-7700

Contact Facsimile Telephone

207 287-3842

Hours of Service

Monday through Friday 0800 - 1700 EST

Process Description

The Maine Office of GIS completed the conversion of all final data layers from NAD27 to NAD83 in July 1999. All the data layers were converted using the ArcInfo (version 7.2.1) NADCON conversion and the "project" command. All data was copied to double precision, projected to NAD83, and then copied back to single precision. It was decided to keep the NAD27 quad structure instead of generating new quad boundaries from NAD83 coordinates - all indexes (quads) were projected to NAD83 by using the same process previously described. All MEGIS data libraries in ArcInfo Librarian were repopulated using the NAD83 indexes and data.

Process Date

19990701

Contact Organization

(MEGIS) Maine Office of Geographic Information Systems

Contact Person

David Kirouac

Contact Position

GIS Coordinator

Address Type

mailing address

Address

State House Station 174

City

Augusta

State or Province

Postal Code

04333-0174

Country

USA

Contact Voice Telephone

207 624-7700

Contact Facsimile Telephone

207 287-3842

Hours of Service

Monday through Friday 0800 - 1700 EST

Cloud Cover

Direct Spatial Reference Method

Vector

SDTS Point and Vector Object Type

Area chain

Point and Vector Object Count

1448

[smcaptur]

false

Grid Coordinate System Name

UTM Zone Number

Scale Factor at Central Meridian

0.9996

Longitude of Central Meridian

-69

Latitude of Projection Origin

False Easting

500000

False Northing

Planar Coordinate Encoding Method

Abscissa Resolution

Ordinate Resolution

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 Type Label

ELECSERVPoly

Entity Type Definition

polygon feature class

Entity Type Definition Source

Environmental Systems Research Institute, Inc. (ESRI)

Attribute Label

COMPANY

Attribute Definition

name of the power company affiliated with the service area

Beginning Date of Attribute Values

Attribute Label

DISTRICT

Attribute Definition

name or number of the district within the company service area

Beginning Date of Attribute Values

Attribute Label

TAG

Attribute Definition

item used to select a single feature for labeling purposes

Enumerated Domain Value

Enumerated Domain Value Definition

yes, use item for labeling

Enumerated Domain Value

Enumerated Domain Value Definition

Do not use item for labeling.

Beginning Date of Attribute Values

Entity Type Label

ELECSERVArc

Entity Type Definition

arc feature class

Entity Type Definition Source

Environmental Systems Research Institute, Inc. (ESRI)

Attribute Label

LINES

Attribute Definition

source of arc

Enumerated Domain Value

100k

Enumerated Domain Value Definition

USGS 1:100,000 data

Enumerated Domain Value

CMP

Enumerated Domain Value Definition

Central Maine Power

Enumerated Domain Value

closure

Enumerated Domain Value Definition

arbitrary line created for closure only

Beginning Date of Attribute Values

Entity and Attribute Overview

ELECSERV contains the service areas of electric power distributors in Maine. The polygon item COMPANY contains the name of the power company affiliated with the service area.

Entity and Attribute Detail Citation

The ArcView shapefile and ArcGIS geodatabase formats, commonly used for Maine GIS data, carry default identifiers and attributes that are software generated and/or important for internal recordkeeping. These are listed here to avoid repetition for every layer, and may not be repeated in the attribute descriptions and definitions of each layer. Common software generated identifiers and attributes in Maine GIS data include: FID (feature identifier), Shape (feature geometry), OBJECTID and SHAPE_lengt. In addition, most GIS formats will carry fields for PERIMETER, AREA and/or LENGTH according to feature geometry. These fields are typically available by default, with the units based on coordinate system or projection units of GIS data. Most GIS software packages also provide a means to calculate these values. It is important to test any columns containing PERIMETER, AREA or LENGTH values before using them for analysis purposes. These important values can be carried from format to format and become out-dated. Verify that the values are correct. Also, in your GIS software, please view the properties of data layers for the map units used to calculate these fields, and for the units set for display purposes.

Entity and Attribute Overview

ELECSERV contains the service areas of electric power distributors in Maine. The polygon item COMPANY contains the name of the power company affiliated with the service area.

Entity and Attribute Detail Citation

Contact Organization

(MEGIS) Maine Office of Geographic Information Systems

Contact Person

GIS Coordinator

Contact Position

GIS Coordinator

Address Type

mailing address

Address

State House Station 174

City

Augusta

State or Province

Postal Code

04333-0174

Country

USA

Contact Voice Telephone

207 624-7700

Contact Facsimile Telephone

207 287-3842

Hours of Service

Monday through Friday 0800 - 1700 EST

Resource Description

http://megis.maine.gov/catalog/

Distribution Liability

Users must assume responsibility to determine the usability of this data for their purposes. Although these data have been processed successfully on a computer system at the Maine Office of Geographic Information Systems, no warranty expressed or implied is made by MEGIS regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. Neither the Maine Office of Geographic Information Systems, nor any of its contributors, is liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets.

Format Name

ESRI Shapefile

Format Version Number

ARC Version 9.x

Format Specification

ArcView Shapefile Format

Format Information Content

MEGIS has made all vector layers, in the Maine GIS Internet Data Catalog, available in ESRI's ArcView shapefile format. A shapefile is a simple non-topological format that stores the geometry and attribute information for a set of geographic features as a set of vector (point, line, polygon) coordinates. Shapefiles draw quickly and directly in ArcView, ArcGIS, ArcExplorer. Shapefiles are a compatible data type for many other types of GIS software. Three files are fundamental to each shapefile: .shp stores the feature geometry (shape and location information); .shx stores the index of the feature geometry; .dbf a dBASE (TM) file stores the attribute information for the features. Other index files may be created to help speed analysis and query: these file formats are .sbn .sbx .ain .aix .fbn and .fbx. In addition you may find projection .prj, and metadata .xml, files associated with shapefiles.

File Decompression Technique

Data available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data.

Network Resource Name

http://megis.maine.gov/catalog/

[accinstr]

These data are available to Internet browsers for download from the Maine GIS Internet Data Catalog - http://megis.maine.gov/catalog/Data available from this website is in .zip compressed format. WinZip is a Windows based, PKZip-compatible compression utility. You will need a program like this to extract the data.If you are not already a GIS user, free software for viewing these files is available from Environmental Systems Research Institute, Inc. (ESRI) - www.esri.com

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Fees

Data may be downloaded from Maine GIS Internet Data Catalog at no charge.

Turnaround

Data is available for immediate download from the Maine GIS Internet Data Catalog.

Technical Prerequisites

If you are not already a GIS user, free software for viewing these files is available from Environmental Systems Research Institute, Inc. (ESRI) http://www.esri.com/

Beginning Date

19980508

Beginning Time

Unknown

Ending Date

Present

Ending Time

Unknown

Contact Organization

Maine Office of Geographic Information Systems

Contact Position

GIS Coordinator

Address Type

mailing address

Address

State House Station 174

City

Augusta

State or Province

Postal Code

04333-0174

Country

USA

Contact Voice Telephone

(207) 624-7700

Contact Facsimile Telephone

(207) 287-3842

Hours of Service

Monday through Friday 0800 - 1700 EST

Distribution Liability

Users must assume responsibility to determine the usability of this data for their purposes.

Format Name

ARCSDE

Format Version Number

ArcSDE 9.x

Format Information Content

Oracle 9i

[accinstr]

Please contact the Maine Office of GIS (MEGIS) for access instructions.

[smdistty]

Fees

Access is available through Maine's wide area network; WAN users may contact the Maine Office of Information Technology, Maine Office of Geographic Information Systems (MEGIS) for a login.

Metadata Reference Information

Metadata Date

20000701

Metadata Review Date

20100114

Metadata Future Review Date

Metadata Contact

Contact Organization	(MEGIS) Maine Office of Geographic Information Systems
Contact Person	GIS Coordinator
Contact Position	GIS Coordinator
Address Type	mailing address
Address	State House Station 174
City	Augusta
State or Province	ME
Postal Code	04333-0174
Country	USA
Contact Voice Telephone	207 624-7700
Contact Facsimile Telephone	207 287-3842
Hours of Service	Monday through Friday 0800 - 1700 EST

Metadata Standard Name

FGDC Content Standards for Digital Geospatial MetadataMetadata

Metadata Standard Version

FGDC-STD-001-1998

Metadata Access Constraints

None

Metadata Use Constraints

None