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Ortho 1F

FGDC XML
Identification Information
Citation Information
Originator Maine Library of Geographic Information (MLGI), U.S. Geological Survey (USGS), Maine Office of Geographic Information Systems (MEGIS)(comp.)
Publication Date 20080901
Publication Time Unknown
Title Ortho 1F
Geospatial Data Presentation Form remote-sensing image
Series Name Maine GIS
Issue Identification SDE server; Internet Data Catalog
Publication Place Augusta ME
Publisher Maine Office of Geographic Information Systems (MEGIS)
Beginning Date 20030301
Beginning Time Unknown
Ending Date 20030519
Ending Time Unknown
Abstract ORTHO_1F is an image mosaic of true color (24-bit), 1 foot ground sample distance (GSD) , high resolution digital orthophotographs produced from aerial photos collected over southwestern, central and northeastern Maine in the Spring of 2003, 2004 and 2005. Each pixel represents a planimetric square 1 foot on a side on the ground. Aerial photography for ORTHO_1F was flown at 6,000 feet above mean ground level. Source elevation data were 10 meter Digital Elevation Models produced for this project by USGS from 1:24,000 scale elevation and hydrography data supplied by MEGIS. The digital orthorectified images (image chips) are referenced to North American Datum 1983, UTM Zone 19, expressed in units of meters. Cartographic Services for orthorectification and the creation of digital elevation models were provided by USGS Mid-Continent Mapping Center (USGSMCMC). ORTHO_1F provides a digital photographic map suitable for applications requiring a 1:2400 map scale, a National Map Accuracy Standard (NMAS) of +/- 6.67 feet. The multi-agreement program was developed and funded in coordination with the Maine GeoLibrary Board. The U.S. Department of Agriculture, Natural Resource Conservation Service (NRCS) contributed toward this project via a separate funding agreement with USGS. The completed orthorectified GeoTIFF files represent quarter-quarter-quadrangle (QQQ) sized tiles with a 300m over-edge. All overedges for ORTHO_1F also overlap adjacent ORTHO_HF and ORTHO_2F orthophotography by this distance. ORTHO_1F tiles provide complete coverage of the TIER A boundaries as defined by the project, http://www.maine.gov/geolib/orthophotography.htm. iles split by tier and project boundaries were completed to their full tile extent. Towns designated TIER A will have complete coverage by 1 foot GSD imagery.
Purpose To serve Maine GIS users, state and local governments as well as the private sector, supplying 1 foot ground sample distance, map-accurate, continuous digital photographic coverage for Maine communities as identified in the high resolution orthophotography project.
Supplemental Information Digital ortho images in ORTHO_1F were delivered by QQQ in uncompressed, untiled, Arc/Info compatible, GeoTIFF format, accompanied by world file *.tfw header files. The QQQ are ~400 MB in size. Other deliverables include FGDC compliant metadata and an orthophoto tile index, INDEX_1F. The naming convention of the delivered files was derived from the northwest corner of each ortho tile using the first four digits of the northing and easting coordinates referenced to the UTM coordinate system, followed by the State designator ME, and the UTM Zone number 19.Both ArcExplorer 4.0.1 (free for download from http://www.esri.com/software/arcexplorer/index.html) and the ArcGIS 9.x module ArcMap accept a URL for "adding" data from an Internet location.
Time Period of Content
Beginning Date 20030301
Beginning Time Unknown
Ending Date 20050620
Ending Time Unknown
Currentness Reference ground condition
Status
Progress In work
Maintenance and Update Frequency Unknown
Bounding Coordinates
West Bounding Coordinate -71.3
East Bounding Coordinate -66.8
North Bounding Coordinate 47.6
South Bounding Coordinate 42.9
Keywords
Theme imageryBaseMapsEarthCover (ISO Keyword Thesaurus)
Theme aerial photograph, ortho-rectified digital image, color imagery 24-bit, ground sample distance 1 foot (Maine GIS Thesaurus-Theme)
Place Maine, Gulf of Maine, United States (Maine GIS Thesaurus-Place)
Stratum radiance or imagery, land surface (GCMD Parameter Keyword)
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
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
Data Set Credit Credit should always be given to the data source and/or originator when the data is transferred or printed.
Security Handling Description Procurement
Native Data Set Environment Ortho-rectified digital images were delivered by U.S. Geological Survey Mid-Continent Mapping Center in GeoTIFF raster file format (with .tfw World file). Maine Office of Information Technology (OIT) Oracle 9i, Maine Office of Geographic Information Systems (MEGIS), Maine GIS SDE
Citation Information
Originator Maine Library of Geographic Information (MLGI), Maine Office of Geographic Information Systems (comp.)
Publication Date 20050711
Publication Time Unknown
Title index_1f
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 (MEGIS)
Online Linkage http://megis.maine.gov/catalog/
Calendar Date 20041201
Time of Day Unknown
[smcisrcc]  publication date
Attribute Accuracy Report Orthophotos were tonally balanced to produce a uniform contrast and tone across the image tiles of the entireproject.
Logical Consistency Report Area of each orthophoto in ORTHO_1F represents an entire QQQ where applicable.
Completeness Report Complete digital orthorectified image files, covering the aerial photo area for Spring 2003.
Horizontal Positional Accuracy Report Technical standards for ORTHO_1F were consistent with standards established by USGS Cartographic Services Contract CSC2 for high resolution orthophoto production. The 1 foot GSD orthophotographs meet the accuracy standard that 90% of all well-defined features will fall within 6.67 feet of true position on the ground at a mapping scale of 1:2400.
Horizontal Positional Accuracy Value 2
Horizontal Positional Accuracy Explanation Relative join (misalignment) of transportation features between adjacent image chips/tiles does not exceed 6.67 feet for the 1 foot GSD area.
Vertical Positional Accuracy Report Standard government DEMs were utilized.
Citation Information
Originator U.S. Geological Survey (USGS), Maine Office of Geographic Information Systems (MEGIS) (comp., ed.)
Publication Date 20000430
Publication Time Unknown
Title contours
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 (MEGIS)
Online Linkage http://megis.maine.gov/catalog/
Beginning Date 19480101
Beginning Time Unknown
Ending Date 19931231
Ending Time Unknown
[smcisrcc]  source dates
Source Scale Denominator 24000
Type of Source Media online
Beginning Date 19480101
Beginning Time Unknown
Ending Date 19931231
Ending Time Unknown
Source Currentness Reference source dates
Source Citation Abbreviation contours
Citation Information
Originator James W. Sewall Company
Title (JWSCLR6000) 1:6,000 Color Aerial Photography
Geospatial Data Presentation Form remote-sensing image
[smcilnkh]  false
[smcisrcs]  6000
[smcisrcm]  filmstrip
Beginning Date 20030301
Beginning Time Unknown
Ending Date 20050620
Ending Time Unknown
[smcisrcc]  ground condition
Source Scale Denominator 6000
Type of Source Media filmstrip
Beginning Date 20030301
Beginning Time Unknown
Ending Date 20050620
Ending Time Unknown
Source Currentness Reference ground condition
Source Citation Abbreviation jwsclr6000
Citation Information
Originator U.S. Geological Survey (USGS), Maine Office of Geographic Information Systems (MEGIS) (ed.)
Publication Date 200407
Title medem10
Geospatial Data Presentation Form raster digital data
Series Name Maine GIS
Issue Identification SDE server; Internet Data Catalog
Publication Place Augusta ME
Publisher Maine Office of Geographic Information Systems (MEGIS)
Other Citation Details 
Online Linkage http://megis.maine.gov/catalog/
Beginning Date 20030701
Beginning Time Unknown
Ending Date Present
Ending Time Unknown
[smcisrcc]  publication date
Source Scale Denominator 24000
Type of Source Media CD-ROM
Beginning Date 20030701
Beginning Time Unknown
Ending Date Present
Ending Time Unknown
Source Currentness Reference publication date
Source Citation Abbreviation medem10
Process Description Aerial photography for ORTHO_1F was flown at 6,000 feet above mean ground level. Camera focal length was six (6") inches. Natural color aerial photography flown north-south, controlled by Airborne Global Positioning System (GPS) and Inertial Measurement Unit (IMU) was acquired and processed to a positive image over an area of approximately 4,493 square miles. The photography acquired only under conditions free from clouds and cloud shadows, smoke, haze, light streaks, snow, flooding, excessive soil moisture, during minimal shadow conditions, and with sun angle greater than 30%. The film specified was Kodak 2427 (or equivalent AGFA) POSITIVE original film, processed to a positive image. Adequate stereo coverage over the project area was required with a minimum overlap of 60% forward and 30% side. The USGS National Aerial Photography Program office, part of USGS Eastern Region Geography conducted quality assessment of the photos collected.
Process Date 20050620
Contact Organization James W. Sewall Company
Address Type mailing and physical address
Address 147 Center Street
City Old Town
State or Province ME
Postal Code 04468
Country USA
Contact Voice Telephone (207) 827-4456
Contact Facsimile Telephone (207) 827-3641
Process Description Orthorectification from color positive aerial film, including geometric correction and mosaicking processes, performed by trained personnel, operating a computerized processing chain.
Process Date 20060224
Contact Organization (USGSMCMC) USGS Mid-Continent Mapping Center
Contact Person Patrick Emmett
Contact Position Contract Officer
Address Type mailing address
Address 1400 Independence Road
City Rolla
State or Province MO
Postal Code 44554
Country USA
Contact Voice Telephone 573 308-3860
Contact Facsimile Telephone 573 308-3810
Hours of Service 0800-1700
Cloud Cover 0
Indirect Spatial Reference Steep Falls sample
Direct Spatial Reference Method Raster
Raster Object Type Pixel
Row Count 
Column Count 
Grid Coordinate System Name 
UTM Zone Number 19
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 Encoding Method 
Abscissa Resolution 1
Ordinate Resolution 1
Planar Distance Units m
Horizontal Datum Name North American Datum of 1927
Ellipsoid Name Clarke 1866
Semi-major Axis 6378206
Denominator of Flattening Ratio 294.9786982
Altitude Datum Name National Geodetic Vertical Datum of 1929
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 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.
Format Name WMS
Format Version Number 1.1
Format Specification OpenGIS (OGC) Web Map Service (WMS)
[accinstr]  The Maine Office of GIS and the GeoLibrary Board provide web mapping services to distribute aerial photos and other digital data. A WMS is not a web application which you can see in a web browser; rather, it requires you to add the service to a GIS software application.
[smdistty]  1
Fees None
Ordering Instructions http://www.maine.gov/geolib/wms.htm
Metadata Reference Information
Metadata Date 20041001
Metadata Review Date 20100119
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 Metadata
Metadata Standard Version FGDC-STD-001-1998
Metadata Access Constraints none
Metadata Use Constraints none
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