metwp24_06302006

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification Information

Section Index

Citation

Citation Information

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Title

Geospatial Data Presentation Form

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On May 22, 2006, the Director of the Maine State Archives designated this layer for permanent retention, with snapshot copies to be made when changes are made, unless no changes in data or metadata have been made since the accession of the previous archival copy. The Maine State Archives became the owner of this copy on May 22, 2006. Prior to that date, the item was in the custody and ownership of the Maine Office of Geographic Information Systems. Information about related administrative records series may be obtained from the Division of Records Management Services, Maine State Archives, SHS 84, Augusta, ME 04333-0084, (207) 287-5792.

Online Linkage

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

Description

Abstract

Purpose

METWP24 was created to show political boundaries, common town names and Maine geocodes at 1:24,000 scale. Data at this scale is suitable for detailed studies and local planning. Not for use in scales greater than 1:24000.

Time Period of Content

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Beginning Date

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Ending Date

Ending Time

Currentness Reference

Status

Progress

Maintenance and Update Frequency

Spatial Domain

Bounding Coordinates

West Bounding Coordinate

East Bounding Coordinate

North Bounding Coordinate

South Bounding Coordinate

Keywords

Theme

Theme Keyword Thesaurus

Theme Keyword

Theme

Theme Keyword Thesaurus

Theme Keyword

Place

Place Keyword Thesaurus

Place Keyword

Stratum

Stratum Keyword Thesaurus

Stratum Keyword

Access Constraints

No changes to the data or metadata of this archival version will be permitted, except in extraordinary circumstances and only with written authorization of the Director of the Maine State Archives. This constraint does not apply to copies made by users. (Jurisdiction: 5 MRSA, Chapter 6 Authorization: 5 MRSA, Chapter 6)

Point of Contact

Contact Information

Contact Organization Primary

Contact Organization

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Contact Address

Address Type

Address

City

State or Province

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Hours of Service

Data Quality Information

Section Index

Attribute Accuracy

Attribute Accuracy Report

Logical Consistency Report

Spatial topology meets "Data Standards for Maine Geographic Information Systems", June 2002. LABELERRORS and NODEERRORS have been resolved. Spatial topology is clean and free of errors. The coverage has been BUILT with polygon topology. An offshore limit line - Originally drafted at 1:250,000 by the Bureau of Land management (BLM) for managing Federal Outer Continental Shelf (OCS) leasing programs, the protraction diagram limit line was later plotted at 1:100,000 scale and provided in digital form to the US Census Bureau for use their TIGER Line Files. While this line is located approximately three nautical miles from the shoreline, it is technically the protraction diagram limit line not the actual three mile limit line and is used for closure purposes only in Maine GIS maps depicting coastal waters of Maine. Where reliable data for the depiction of town boundaries beyond the coastline were not available, lines called connectors or arcs that extend from the coastline to this offshore limit line were added to METWP24 to correct query results for specific applications and for cartographic purposes. They are easily removed from the line feature class by selecting all arcs coded TYPE = connector and from the polygon feature class by selecting only features where LAND = 'y'.

Completeness Report

Positional Accuracy

Horizontal Positional Accuracy

Horizontal Positional Accuracy Report

Quantitative Horizontal Positional Accuracy Assessment

Horizontal Positional Accuracy Value

Horizontal Positional Accuracy Explanation

Lineage

Source Information

Source Citation

Citation Information

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Geospatial Data Presentation Form

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Series Name

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Other Citation Details

Online Linkage

Source Scale Denominator

Type of Source Media

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Edition

Geospatial Data Presentation Form

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This citation is for the first official Standard Geographic Code endorsed and adopted by the Governor of Maine, on July 1, 1971. Geocodes have undergone subsequent revisions, all of which were "officially" rolled back to this 1971 list by Maine's Information Services Policy Board (ISPB), as of January 2000. In 1971, all Maine state agencies were requested to implement these five digit geocodes, in agency information systems, to build a base of data for Maine's Minor Civil Divisions (MCDs) and to promote data sharing. Data coded by MCD may subsequently be summarized by any other type of region, administrative district, natural area, etc. The first two digits of the geocode represent the federal code (FIPS) for Maine counties, the remaining three digits uniquely identify each of Maine's MCDs and Reservations. As an information service to state agencies and the public, geocodes for Maine, are now maintained, updated and made available for download, in comma delimited text and .dbf format, through the Maine Office of Geographic Information Systems (MEGIS) Data Catalog at http://megis.maine.gov/catalog/ , "Tables" link.

Online Linkage

Source Time Period of Content

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Single Date/Time

Calendar Date

Time of Day

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Source Citation Abbreviation

Source Contribution

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Source Citation

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Publication Date

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Geospatial Data Presentation Form

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Publication date is unique to each quadrangle in the map series. Standard 30x60 minute quadrangles cover geographic areas of 1578 to 2167 square miles. 1 inch at map scale represents 1.6 miles. The following information from the Mid-continent Mapping Center (MCMC) may be pertinent in the use of 100k data: "The 100k quadrangles were primarily produced using 15 minute copy. However, P (provisional) maps and other 7.5 minute copy were also used."

Online Linkage

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Geospatial Data Presentation Form

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Data, from the U.S. Department of Commerce Bureau of Census 1:100000 TIGER Line Files 1990 were used, in METWP24, to represent the offshore limit line and where TIGER features provided the best known representation of a town or reservation boundary. The following information on the origin and accuracy of the offshore limit line was provided by USGS: "According to USGS preliminary policy directive, dated January 6, 1977, the offshore protraction survey data (offshore limit line represented in METWP24) was originally shown only on 1:250000 scale topographic/bathymetric maps. In response to additional user requirements the decision was later made to show this data on all 1:100000 and 1:250000 scale maps regardless of the availability of bathymetry (Supplemental Topographic Instruction (STI 80/2/C, March 17, 1980). The offshore protraction surveys were prepared by the Bureau of Land management (BLM) for managing Federal Outer Continental Shelf (OCS) leasing programs. The protraction surveys were plotted by BLM at 1:250000 scale to produce the OCS Official Protraction Diagrams. In October 1982, the responsibility for preparing leasing maps was transferred from BLM to the Minerals Management Service (STI 83-5-C, August 26, 1983). The Information was plotted on 1:100,000 scale maps from copy that was enlarged from the 1:250000 scale graphics. The information on the 100,000 scale maps was provided in digital form to the Census Bureau for their TIGER Line Files. The offshore protraction diagram limit line parallel to the shoreline on the Official Protraction Diagrams is not identified as a territorial limit line or labeled on USGS maps as the three mile or three league line. While this line is located approximately three nautical miles from the shoreline, it is technically the protraction diagram limit line, not the actual three mile limit line. . . .the protraction limit line . . . can only be as accurate as the original source (BLM Official Protraction Diagrams).

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Source Citation

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Geospatial Data Presentation Form

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Online Linkage

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Source Contribution

Data, from the Maine Office of Geographic Information Systems (MEGIS) 1:100000 town boundary coverage METWP100, were used, in METWP24, where features provided the best known representation of a town or reservation boundary.

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Geospatial Data Presentation Form

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Data, from the Maine Office of Geographic Information Systems (MEGIS) 1:24000 library layer COAST, were used, in METWP24, to represent the Mean High Water (MHW) line, tidal rivers and salt water ponds and where coincident features provided the best known representation a town or reservation boundary.

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Geospatial Data Presentation Form

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1:24000 Please note this Maine GIS 1:24000 scale ROADS data is actively being updated by the E911 project. Although ROADS remains available in the Data Catalog, the dataset E911RDS, available under the TOWNS tab is finalized E911 data and more up-to-date.

Online Linkage

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Source Contribution

Data, from the Maine Office of Geographic Information Systems (MEGIS) 1:24000 library layer ROADS, were used, in METWP24, where coincident features provided the best known representation of a town or reservation boundary.

Source Information

Source Citation

Citation Information

Originator

Publication Date

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Title

Geospatial Data Presentation Form

Series Information

Series Name

Issue Identification

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Data, from the Maine Office of Geographic Information Systems (MEGIS) 1:24000 library layer PONDS, were used where coincident features provided the best known representation of a town or reservation boundary in METWP24.

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Source Citation

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Originator

Publication Date

Title

Geospatial Data Presentation Form

Series Information

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Publication Information

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24000 Publication date is unique to each quadrangle in the map series. A schedule of updates to USGS 1:24000 scale quadrangles has produced "photorevisions" of the hard copy maps. 7.5x7.5 minute quadrangles cover geographic areas of 49 to 71 square miles. 1 inch at map scale represents 2000 feet.

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Edition

Geospatial Data Presentation Form

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TIGERS (Topologically Integrated Geographic Encoding and Referencing) are a public product of the Bureau of the Census. TIGERS represent a digital database of geographic features, such as roads, railroads, rivers, lakes, political boundaries, census statistical boundaries, etc. covering the entire United States. The database contains information about these features such as their location in latitude and longitude, the type of feature, the geographic relationship to other features, and other related information. In order for others to use the information in the Census TIGER database in a geographic information system (GIS), the Census Bureau releases periodic extracts of the database, including the TIGER/Line Files, to the public. Note: Census TIGER, TIGER, TIGER/Line, and the TIGER logo are registered trademarks of the U.S. Bureau of the Census. For additional information on the Census TIGER Data, please refer to the TIGER/Line Files Technical Documentation, the TIGER/Line Files Metadata, or to the Census Web Site. TIGER/Line Files, Redistricting Census 2000 metadata at <http://www.census.gov/geo/www/tiger/rd_2ktiger/tlrdmeta.txt>.

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U.S. Department of Commerce, Bureau of Census, 1:100,000 TIGER Line Files 2000 were used, in METWP24, to represent an "offshore limit line" and to depict town, county, or state boundaries where TIGER features provided the best known representation.

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Geospatial Data Presentation Form

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Title33Ch25, 1973,<http://janus.state.me.us/legis/statutes/>, refer to "Maine Revised Statutes Annotated" and supplements for complete certified text of this statute. The Coastal Island Registry was established within the Bureau of Parks and Lands, under the Director of the Bureau of Parks and Lands, to maintain a listing and description of all coastal islands.

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Geospatial Data Presentation Form

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Recommended FM items, FMSRC, FMSRCDAT, FMSRCORG, FMPROCSS, FMUPDORG, FMUPDDAT, and suggested codes provide accessible readable standardized notation on the source, source originator, process, organization of edit, and date of edit that identify a feature's location and quality. The codes are in English, all lowercase and include no hyphens, punctuation or spaces. Codes have standardized definitions so their use represents a single unique defined source, source originator, process, or organization of edit. The Maine GIS Technical Group's FM subcommittee has defined these items for use in feature attribute tables. The final recommendation, which was presented January 2001, is flexible and will function in most GIS environments independent of FGDC metadata or specific metadata tools; however, parallel or subsequent development of FGDC metadata, and use of cross references to same, is assumed and recommended. For more information on the Maine GIS Feature Metadata Recommendation see: http://www.megis.maine.gov/standards/standards.asp/, Standards & Guidelines.

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Citation Information

Originator

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Title

Geospatial Data Presentation Form

Series Information

Series Name

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Other Citation Details

Online Linkage

Source Scale Denominator

Type of Source Media

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Time Period Information

Single Date/Time

Calendar Date

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Source Citation Abbreviation

Source Contribution

Source Information

Source Citation

Citation Information

Originator

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Title

Geospatial Data Presentation Form

Series Information

Series Name

Issue Identification

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Other Citation Details

Online Linkage

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Process Step

Process Description

METWP24 contains statewide political boundaries digitized from USGS 1:24,000 scale quadrangle maps. ARCS and POLYGONS have been added or edited by Maine Office of GIS staff to reflect recent changes in Minor Civil Division boundaries.

Process Date

Process Contact

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Process Step

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

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Process Description

METWP24 was updated to include the following: name changes to comply with MRSA 1 Ch27, section 1101 An Act Concerning Offensive Names, Big Squaw Twp to Big Moose Twp, Little Squaw Twp to Moosehead Junction Twp; name changes to comply with MRS 1, Ch28, section 1501 Name Changes by Passamaquoddy Tribe, T5 ND BPP (29812) to Sakom Twp, T5 R1 NBPP (19826) to Pukakon Twp, T4 ND BPP (09802) to Oqiton Twp; changed data type of item GEOCODE from "I" (integer) to "C" (character); added POLYGON items CIREG, COUNTY, CNTYCODE, GEOCODENUM and the ARC items LAND, FMSRC, FMSRCDAT, FMSRCORG, FMPROCSS, FMUPDORG, FMUPDDAT, FMNOTE; the code 'coast' for the ARC item TYPE was changed to 'coastline' in order to coordinate with recoding requirements anticipated for Maine GIS geodatabase development, and the code 'closure' was added, to the item TYPE, for reference to the coastal closure lines between legally described and georeferenced town/county lines and the offshore limit line; Coastal Island Registry (CIREG) numbers were added from and proofed to match the Maine GIS data layer COAST (The primary source for CIREG numbers in Maine GIS data layers is the Maine Department of Conservation, Bureau of Parks and Lands (BPL), Coastal Island Registry.); the BPL Coastal Island Registry was used to correct and complete the attributes, TOWN, COUNTY, CIREG, for 400+ island polygons in the lower Penobscot Bay region (Future corrections and updates to any of these items for coastal islands, in Maine GIS data layers, will be through confirmation and coordination with the primary source.); at the recommendation of the Maine GIS Town Boundary subcommittee a closure line was added to represent the ocean boundary between Muscle Ridge Shoals Twp, Vinalhaven and Matinicus Isle Plantation (Muscle Ridge Shoals Twp is an MCD and has a unique GEOCODE as listed in Maine GIS "Standard Geographic Codes for Maine Minor Civil Division", see <http://musashi.ogis.state.me.us/catalog> Tables)

Process Date

Process Contact

Contact Information

Contact Organization Primary

Contact Organization

Contact Position

Contact Address

Address Type

Address

City

State or Province

Postal Code

Country

Contact Voice Telephone

Contact Facsimile Telephone

Hours of Service

Process Step

Process Description

Process Date

Process Contact

Contact Information

Contact Organization Primary

Contact Organization

Contact Position

Contact Address

Address Type

Address

City

State or Province

Postal Code

Country

Contact Voice Telephone

Contact Facsimile Telephone

Hours of Service

Process Step

Process Description

The attribute TAG = 'y' has been corrected in METWP24 to ensure a correct join or relate with the GEOCODES and GEOMCDCCD tables. Errors were corrected in the coding of the attribute for Criehaven Twp, Frenchboro, Islands of Moosehead Lake, Machiasport, Matinicus Isle Plt, Molunkus Twp, Muscle Ridge Shoals Twp, T2 R9 WELS, T4 R10 WELS, Westport, Vinalhaven, Swan Island in the Kennebec River.

Process Date

Process Contact

Contact Information

Contact Organization Primary

Contact Organization

Contact Position

Contact Address

Address Type

Address

City

State or Province

Postal Code

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Contact Voice Telephone

Contact Facsimile Telephone

Hours of Service

Process Step

Process Description

Process Date

Process Contact

Contact Information

Contact Organization Primary

Contact Organization

Contact Position

Contact Address

Address Type

Address

City

State or Province

Postal Code

Country

Contact Voice Telephone

Contact Facsimile Telephone

Hours of Service

Process Step

Process Description

Process Date

Process Contact

Contact Information

Contact Organization Primary

Contact Organization

Contact Position

Contact Address

Address Type

Address

City

State or Province

Postal Code

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Contact Voice Telephone

Contact Facsimile Telephone

Hours of Service

Process Step

Process Description

METWP24 has been edited with information provided by the Maine Land User Regulation Commission. The 7.5 minute map series depiction of the south boundary of Rockwood Strip T1 R1 NBKP with Taunton & Raynham Academy Grant has been replaced with a correct depiction of the boundary from the 30 x 60 minute series. Feature metadata and layer metadata have been updated to reflect the change.

Process Date

Process Contact

Contact Information

Contact Organization Primary

Contact Organization

Contact Position

Contact Address

Address Type

Address

City

State or Province

Postal Code

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Contact Voice Telephone

Contact Facsimile Telephone

Hours of Service

Process Step

Process Description

Process Date

Process Contact

Contact Information

Contact Organization Primary

Contact Organization

Contact Person

Contact Position

Contact Address

Address Type

Address

City

State or Province

Postal Code

Country

Contact Voice Telephone

Contact Electronic Mail Address

Process Step

Process Description

Process Date

Process Contact

Contact Information

Contact Organization Primary

Contact Organization

Contact Person

Contact Position

Contact Address

Address Type

Address

City

State or Province

Postal Code

Country

Contact Voice Telephone

Contact Facsimile Telephone

Hours of Service

Process Step

Process Description

Process Date

Process Contact

Contact Information

Contact Organization Primary

Contact Organization

Contact Position

Contact Address

Address Type

Address

City

State or Province

Postal Code

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Contact Voice Telephone

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Hours of Service

Cloud Cover

Spatial Data Organization Information

Section Index

Direct Spatial Reference Method

Point and Vector Object Information

SDTS Terms Description

SDTS Point and Vector Object Type

Point and Vector Object Count

Spatial Reference Information

Section Index

Horizontal Coordinate System Definition

Planar

Grid Coordinate System

Grid Coordinate System Name

Universal Transverse Mercator

UTM Zone Number

Transverse Mercator

Scale Factor at Central Meridian

Longitude of Central Meridian

Latitude of Projection Origin

False Easting

False Northing

Planar Coordinate Information

Planar Coordinate Encoding Method

Coordinate Representation

Abscissa Resolution

Ordinate Resolution

Geodetic Model

Horizontal Datum Name

Ellipsoid Name

Semi-major Axis

Denominator of Flattening Ratio

Vertical Coordinate System Definition

Altitude System Definition

Altitude Resolution

Altitude Encoding Method

Entity and Attribute Information

Section Index

Detailed Description

Entity Type

Entity Type Label

Entity Type Definition

Entity Type Definition Source

Attribute

Attribute Label

Attribute

Attribute Label

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Attribute Label

Attribute

Attribute Label

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Attribute

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Attribute Label

Attribute Definition

Attribute Domain Values

Enumerated Domain

Enumerated Domain Value

Enumerated Domain Value Definition

Enumerated Domain

Enumerated Domain Value

Enumerated Domain Value Definition

Attribute

Attribute Label

Attribute Definition

Attribute Definition Source

Attribute Domain Values

Unrepresentable Domain

Attribute

Attribute Label

Attribute

Attribute Label

Attribute Definition

Attribute Definition Source

Attribute Domain Values

Unrepresentable Domain

Attribute

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Attribute Label

Detailed Description

Entity Type

Entity Type Label

Entity Type Definition

Entity Type Definition Source

Attribute

Attribute Label

Attribute Definition

25 character field defined 25 25 C; this FM item contains free text notes on updates to the location of a feature; can be used as cross reference to Other Citation Details in the Source Information section of FGDC metadata.

Attribute Definition Source

Maine GIS Technical Group, Feature Metadata subcommittee (More information on FM items, codes, definitions, and the use of feature metadata is available at http://megis.maine.gov/standards/flmeta/fmbrief.htm, Maine GIS Standards & Guidelines link.

Attribute

Attribute Label

Attribute Definition

12 character field defined 12 12 C; this FM item refers to a PROCESS OR ACTION which is explanatory of quality or accuracy of a feature; can be used for cross reference in the Process Description or Source Produced Citation Abbreviation elements, part of the Data Quality/Process Step and Source Information sections of FGDC metadata.

Attribute Definition Source

Attribute

Attribute Label

Attribute Definition

12 character field defined 12 12 C; this FM item names a SOURCE (general or specific) used for the location of a feature; standardized codes for this item can be used for cross reference in the Source Citation Abbreviation element, part of the Data Quality/Source Information section of FGDC metadata.

Attribute Definition Source

Attribute

Attribute Label

Attribute Definition

default Arc/Info date field defined 8,10,D; this FM item refers to the DATE OF THE SOURCE attributed in FMSRC; can be used as cross reference to Publication Date, part of the Data Quality/Source Information section of FGDC metadata

Attribute Definition Source

Attribute

Attribute Label

Attribute Definition

12 character field defined 12 12 C; the FM item FMSRCORG refers to the ORIGINATOR OF THE SOURCE used in the location of a feature; codes for this item are standardized acronyms (ME prefix for Maine state agencies, US prefix for USA federal agencies, all lower-case, no hyphens, no punctuation, confirmed), cross references can be made between this item and the element Originator, part of the Data Quality/Source Information section of FGDC metadata.

Attribute Definition Source

Attribute

Attribute Label

Attribute Definition

default Arc/Info date field defined 8, 10, D; the FM item FMUPDAT refers to the date of update on the location of a feature; can be used as cross reference to Process Date, part of the Data Quality/Process Step sections of FGDC metadata

Attribute Definition Source

Attribute

Attribute Label

Attribute Definition

12 character field defined 12, 12, C, the FM item FMUPDORG refers to the EDIT ORGANIZATION responsible for the location of a feature; codes for this are standardized acronyms (ME prefix for Maine state agencies, US prefix for USA federal agencies, all lower-case, no hyphens, no punctuation, confirmed), cross references can be made between this item and the element Process Contact, part of the Data Quality/Process Step sections of FGDC metadata.

Attribute Definition Source

Attribute

Attribute Label

Attribute Definition

Attribute Domain Values

Enumerated Domain

Enumerated Domain Value

Enumerated Domain Value Definition

Enumerated Domain

Enumerated Domain Value

Enumerated Domain Value Definition

Attribute

Attribute Label

Attribute Definition

Attribute Domain Values

Enumerated Domain

Enumerated Domain Value

Enumerated Domain Value Definition

Enumerated Domain Value Definition Source

Enumerated Domain

Enumerated Domain Value

Enumerated Domain Value Definition

offshore limit line - Originally drafted at 1:250,000 by the Bureau of Land management (BLM) for managing Federal Outer Continental Shelf (OCS) leasing programs, the protraction diagram limit line was later plotted at 1:100,000 scale and provided in digital form to the US Census Bureau for use their TIGER Line Files. While this line is located approximately three nautical miles from the shoreline, it is technically the protraction diagram limit line not the actual three mile limit line and is used for closure purposes only in Maine GIS maps depicting coastal waters of Maine.

Enumerated Domain Value Definition Source

Enumerated Domain

Enumerated Domain Value

Enumerated Domain Value Definition

Enumerated Domain

Enumerated Domain Value

Enumerated Domain Value Definition

Enumerated Domain

Enumerated Domain Value

Enumerated Domain Value Definition

Enumerated Domain

Enumerated Domain Value

Enumerated Domain Value Definition

features within town boundaries, i.e. Baxter State Park, Maine Land Use Regulation Commission, Reservation, and other boundaries that do not represent 'town', 'county', 'state', 'coastline', 'connector' or 'offshore' features

Enumerated Domain

Enumerated Domain Value

Enumerated Domain Value Definition

arcs that extend from the coastline to the offshore limit line (Where reliable data for the depiction of town boundaries beyond the coastline were not available, connector lines were added to METWP24 to correct query results for specific applications and for cartographic purposes. They are easily removed from the line feature class by selecting all arcs coded TYPE = connector and from the polygon feature class by selecting only features where LAND = 'y'.)

Overview Description

Entity and Attribute Overview

POLYGONS in METWP24 are attributed with the items TOWN, COUNTY, GEOCODE, and CNTYCODE as found in "Standard Geographic Codes for Maine Minor Civil Divisions". Like COAST, METWP24 contains the item CIREG flagging those islands whose ISLANDID is also a Maine Department of Conservation, Bureau of Parks and Lands, Coastal Island Registry (CIREG) number. POLYGONS in the coverage are also attributed with the items LAND, ISLAND, ISLANDID, LURC, BAXTER and TAG. ARCS are coded with the items LAND, TYPE, and with Maine GIS recommended feature metadata (FM) items and codes. Initially FM items were coded from the item SOURCE, which has been dropped, and FM items are now maintained with current information as the data is edited. The FM items provide the most specific and accessible information about the sources for location line features, polygon boundaries and arcs, in the data. For more information on Maine GIS Feature Metadata Recommendation and "Standard Geocodes for Maine Minor Civil Divisions" see the Standards & Guildelines link. You may contact the Maine Office of GIS at 207 287-6144 for technical assistance.

Entity and Attribute Detail Citation

The ArcInfo coverage, ArcView shapefile, 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: <title>#, <title>-ID, <title>_, <title>_ID, FID (feature identifier), Shape (feature geometry), OBJECTID. Other default attributes, that may be present, refer to the topological relationships between features, for example RIGHTPOLY or R_POLY, LEFTPOLY or L_POLY, FROMNODE or F_NODE, TONODE or T_NODE. 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. (Units are meters for Maine 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.

Distribution Information

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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. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/.

Digital Transfer Option

Online Option

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These data are available to Internet browsers for download from the Maine GIS Internet Data 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. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/. If you are not already a GIS user, free software for viewing these files is available from Environmental Systems Research Institute, Inc. (ESRI). See http://megis.maine.gov/links/ for a link to ArcExplorer 9.x .

Digital Transfer Option

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MEGIS has created a web based application for Maine GIS data that adheres to the OpenGIS Consortium (OGC) Web Mapping Specification (WMS 1.1.1) which allows map servers to create and send standard map images over the Web.

Digital Transfer Option

Online Option

Computer Contact Information

Network Address

Network Resource Name

http://megisims.state.me.us/wmsconnector/com.esri.wms.Esrimap/WMSFramework?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&LAYERS=METWP24L&SRS=EPSG:4326&BBOX=-71.31,42.85,-66.74,47.67&WIDTH=400&HEIGHT=300&FORMAT=image/png&STYLES=

Network Resource Name

http://megisims.state.me.us/wmsconnector/com.esri.wms.Esrimap/WMSFramework?SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&LAYERS=METWP24P&SRS=EPSG:4326&BBOX=-71.31,42.85,-66.74,47.67&WIDTH=400&HEIGHT=300&FORMAT=image/png&STYLES=

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Currently OGC WMS 1.1.1 access is available for CONTOURS, DOQQ, E911RDS, HYD24L, HYD24P, INDEX_HF, MECNSLND, MEDOQINDEX, MEDOTPUB, MERAIL24, METWP24L, METWP24P, ORTHO_HF, ORTHO_FF, ORTHO_1F, ORTHO_2F, INDEX_FF, INDEX_1F, INDEX_2F, OTRANS. These images are available to the Web and client software for overlay and display of multiple maps using first of the URLS listed above. Access the OGC: WMS Framework "WMT_MS Get Capabilities" in XML using Internet browser or other XML friendly viewer.

Metadata Reference Information

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Please confirm that you are using the correct copy of both data and metadata from the Maine GIS Data Catalog. The Maine Office of Geographic Information Systems (MEGIS) provides notice of updates and corrections directly to the Maine GIS Technical Group and Maine GIS Users through the MEGISTECH and MEGISUSER list servers. To subscribe please contact MeGIS through the Maine Office of Information Technology (OIT) Customer Support Center (CSC) at (207) 624-7700. To request correction in, or updates to Maine GIS data, please use the contact information contained in the metadata. 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 in consultation with the Maine GIS Executive Council.

Metadata Extensions

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Profile Name

SMMS Metadata report generated Wednesday, 04/March/2009