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mecon500
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:
Originator: U.S. Geologic Survey (USGS), Maine Office of Geographic Information Systems (MEGIS)(comp.)
Publication Date: 19950101
Publication Time: Unknown
Title: mecon500
Geospatial Data Presentation Form: vector digital data
Series Information:
Series Name: Maine GIS
Issue Identification: SDE server; Internet Data Catalog
Publication Information:
Publication Place: Augusta ME
Publisher: Maine Office of Geographic Information Systems
Other Citation Details: 1:250000
Online Linkage: http://megis.maine.gov/catalog/
Description:
Abstract:
MECON500 contains 500 foot contour intervals for Maine, generated from USGS 1:250,000 DEMs. Arcs are coded by elevation. Due to the nature of the source data, the positional accuracy of these contour lines varies from good to poor. Use of these data at scales of greater then 1:250,000 not recommended.
Purpose:
MECON500 was created to provide a statewide vector coverage of elevation data for Maine suitable for statewide planning studies. Use of these data at scales of greater then 1:250,000 is strongly discouraged. Users must assume responsibility in determining the usability of this data for their purpose.
Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 1995
Time of Day: Unknown
Currentness Reference: publication date
Status:
Progress: Complete
Maintenance and Update Frequency: None planned
Spatial Domain:
Bounding Coordinates:
West Bounding Coordinate: -71.00521
East Bounding Coordinate: -66.8582
North Bounding Coordinate: 47.42546
South Bounding Coordinate: 43.07604
Keywords:
Theme:
Theme Keyword Thesaurus: ISO Keyword Thesaurus
Theme Keyword: elevation
Theme:
Theme Keyword Thesaurus: Maine GIS Thesaurus-Theme
Theme Keyword: contours
Theme Keyword: hypsography
Place:
Place Keyword Thesaurus: Maine GIS Thesaurus-Place
Place Keyword: Maine
Place Keyword: United States
Stratum:
Stratum Keyword Thesaurus: GCMD Parameter Keyword
Stratum Keyword: land surface
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 Organization: (MEGIS) Maine Office of Geographic Information Systems
Contact Person: GIS Coordinator
Contact Position: GIS Coordinator
Contact Address:
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
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 SDE, Maine GIS Internet Data Catalog http://megis.maine.gov/catalog/
Data Quality Information
Section Index
Attribute Accuracy:
Attribute Accuracy Report: Due to the nature of the source data, the attribute accuracy of these contour lines varies. Data was spot checked to known elevations. Please report errors.
Logical Consistency Report: Spatial topology meets "Data Standards for Maine Geographic Information Systems", June 2002.
Completeness Report: Data set is complete.
Positional Accuracy:
Horizontal Positional Accuracy:
Horizontal Positional Accuracy Report:
Due to the nature of the source data, the positional accuracy of these contour lines varies from good to poor. Due to the nature of the source data, the positional accuracy of these contour lines varies from good to poor. Use of these data at scales of greater then 1:250,000 not recommended.
Quantitative Horizontal Positional Accuracy Assessment:
Horizontal Positional Accuracy Value: 127
Horizontal Positional Accuracy Explanation: Contour lines generated from USGS 1:250,000 DEMs
Vertical Positional Accuracy:
Vertical Positional Accuracy Report: National Map Accuracy Standard applies to USGS topographic maps. At all map scales, the maximum allowable vertical tolerance is one half the published contour interval.
Lineage:
Source Information:
Source Citation:
Citation Information:
Originator: U.S. Geological Survey (USGS)
Publication Date: 1995
Publication Time: Unknown
Title: (250kdem) USGS 1:250,000 scale digital elevation models
Geospatial Data Presentation Form: raster digital data
Series Information:
Series Name: USGS Digital Elevation Models
Issue Identification: 1:250000 DEM
Publication Information:
Publication Place: Reston VA
Publisher: U.S. Geological Survey
Other Citation Details:
3- x 3-arc second DEMS provides coverage in 1 x 1 degree blocks for all the contiguous United States, Hawaii and limited parts of Alaska. The basic elevation model is produced by or for the U.S. Department of Defense, Defense Mapping Agency (DMA), but is distributed by the USGS, EROS Data Center, in the DEM data record format. 1:250000 Digital Elevation Model data
Online Linkage: http://mapping.usgs.gov/mac/isb/pubs/factsheets/fs04000.html
Source Scale Denominator: 250000
Type of Source Media: digital tape media
Source Time Period of Content:
Time Period Information:
Single Date/Time:
Calendar Date: 1995
Time of Day: Unknown
Source Currentness Reference: publication date
Source Citation Abbreviation: 250kdem
Source Contribution: 500 foot contour lines
Process Step:
Process Description: MECON500 contains 500 foot contours for the entire state as generated from USGS 1:250,000 scale digital elevation models using Arc/Info software. Arcs are coded by elevation in feet and meters.
Source Used Citation Abbreviation: 250kdem
Process Date: 1995
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEGIS) Maine Office of Geographic Information Systems
Contact Person: GIS Coordinator
Contact Position: GIS Coordinator
Contact Address:
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
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: 19990701
Process Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEGIS) Maine Office of Geographic Information Systems
Contact Person: GIS Coordinator
Contact Position: GIS Coordinator
Contact Address:
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
Cloud Cover: 0
Spatial Data Organization Information
Section Index
Direct Spatial Reference Method: Vector
Point and Vector Object Information:
SDTS Terms Description:
SDTS Point and Vector Object Type: Complete chain
Point and Vector Object Count: 7617
Spatial Reference Information
Section Index
Horizontal Coordinate System Definition:
Planar:
Grid Coordinate System:
Grid Coordinate System Name: Universal Transverse Mercator 1983
Universal Transverse Mercator:
UTM Zone Number: 19
Transverse Mercator:
Scale Factor at Central Meridian: 0.9996
Longitude of Central Meridian: -69
Latitude of Projection Origin: 0
False Easting: 500000
False Northing: 0
Planar Coordinate Information:
Planar Coordinate Encoding Method: Coordinate Pair
Coordinate Representation:
Abscissa Resolution: 1
Ordinate Resolution: 1
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
Vertical Coordinate System Definition:
Altitude System Definition:
Altitude Datum Name: National Geodetic Vertical Datum of 1929
Entity and Attribute Information
Section Index
Detailed Description:
Entity Type:
Entity Type Label: MECON500
Entity Type Definition: arc feature class
Entity Type Definition Source: Environmental Systems Research Institute, Inc. (ESRI)
Attribute:
Attribute Label: FEET
Attribute Definition: elevation of contour line in feet
Attribute:
Attribute Label: METERS
Attribute Definition: elevation of contour line in meters
Attribute Definition Source: default Arc/Info
Overview Description:
Entity and Attribute Overview: Arcs are coded by elevation.
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.
Distribution Information
Section Index
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEGIS) Maine Office of Geographic Information Systems
Contact Person: GIS Coordinator
Contact Position: GIS Coordinator
Contact Address:
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
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.
Standard Order Process:
Digital Form:
Digital Transfer Information:
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. A link to a trial copy WinZip software is available at http://megis.maine.gov/links/.
Digital Transfer Option:
Online Option:
Computer Contact Information:
Access Instructions:
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. 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) - www.esri.com
See http://megis.maine.gov/links/ for a link to ArcExplorer 9.x .
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.
Available Time Period:
Time Period Information:
Range of Dates/Times:
Beginning Date: 1/1/1995
Beginning Time: Unknown
Ending Date: Present
Ending Time: Unknown
Distribution Information
Section Index
Distributor:
Contact Information:
Contact Organization Primary:
Contact Organization: Maine Office of Geographic Information Systems
Contact Position: GIS Coordinator
Contact Address:
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
Distribution Liability: Users must assume responsibility to determine the usability of this data for their purposes.
Standard Order Process:
Digital Form:
Digital Transfer Information:
Format Name: ARCSDE
Format Version Number: ArcSDE 9.x
Format Information Content: Oracle 9i
Digital Transfer Option:
Online Option:
Access Instructions: Please contact the Maine Office of GIS (MEGIS) for access instructions.
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
Section Index
Metadata Date: 7/1/2000
Metadata Review Date: 1/19/2010
Metadata Future Review Date:
Metadata Contact:
Contact Information:
Contact Organization Primary:
Contact Organization: (MEGIS) Maine Office of Geographic Information Systems
Contact Person: GIS Coordinator
Contact Position: GIS Coordinator
Contact Address:
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 Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Access Constraints: None
Metadata Use Constraints: None
SMMS Metadata report generated Thursday, 21/January/2010