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James W. Sewall Company
ImageryBaseMapsEarthCover (ISO Keyword Thesaurus - Theme)
Digital orthophotos, Digital image map, Aerial photography, rectified photograph, rectified image, orthophoto, GSD .075m (none)
City of Lewiston
mailing and physical address
City Building - 27 Pine Street
State or Province
Contact Voice Telephone
Contact Electronic Mail Address
This OGC-compliant web mapping service (WMS) provides 3" pixel resolution orthoimagery of the cities of Lewiston/Auburn ME. This WMS is provided by the Maine Office of GIS and the Maine GeoLibrary Board. Lewiston/Auburn 2006 3" orthoimagery - As the prime contractor, James W. Sewall Company. used the aerial photography flown in one session on April 9th, 2006. Data were collected at an altitude of 7200' using a 6" Zeiss RMK camera with FMC. The film scale was 1" = 600', scanned at a resolution of 2540dpi (10 microns). Orthophotos were produced to meet ASPRS class 1 specifications for 1"=100' (1:1200) mapping, or a horizontal accuracy of about 1 foot with a 3-inch ground pixel resolution.
Use in GIS for viewing and analysis along with sale to surveying, engineering, GIS and other intersted individuals and companies.
Time Period of Content
Maintenance and Update Frequency
West Bounding Coordinate
East Bounding Coordinate
North Bounding Coordinate
South Bounding Coordinate
Data should not be used beyond the scale of 1:1200.
Data Set Credit
Cities of Lewiston/Auburn, James W. Sewall Company.
Native Data Set Environment
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 18.104.22.16800
Orthoimagery for Lewiston/Auburn clipped to roughly 100m beyond the city boundaries, and including extra area in Buckfield, Hebron, Poland, and Turner.
Horizontal Positional Accuracy Report
Data meets ASPRS class 1 accuracy standards for 1" = 100' (1:1200) orthophots, or horizontal accuracy of 1 foot.
Lewiston/Auburn 2006 3" orthoimagery - As the prime contractor, James W. Sewall Company. used the aerial photography flown in one session on April 9th, 2006. Data were collected at an altitude of 7200' using a 6" Zeiss RMK camera with FMC. The film scale was 1" = 600', scanned at a resolution of 2540dpi (10 microns). Orthophotos were produced to meet ASPRS class 1 specifications for 1"=100' (1:1200) mapping, or a horizontal accuracy of about 1 foot with a 3-inch ground pixel resolution.
Direct Spatial Reference Method
Raster Object Type
Grid Coordinate System Name
SPCS Zone Identifier
Horizontal Datum Name
North American Datum of 1983
Geodetic Reference System 80
Network Resource Name
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.
Metadata Reference Information
James W. Sewall Company