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General Listing
Title of Listing:
Orthophotoquads
Category:
Maps/Geographic Data
Subcategory:
US Geological Survey-USGS, All Listings
Date:
Document #:
Web Site:
http://www.fgdc.gov/FGDP/Orthophotoquads.html
Email:
custserv@edcmail.cr.usgs.gov
Abstract:

Orthophotoquads are distortion-free aerial photographic images that are formatted as standard 7.5-minute quadrangles (15-minute in Alaska) or as quarter-quadrangles at a scale of 1:12,000.

          Orthophotoquads contain no symbolized features, and a minimal number of names. Because they show a wealth of planimetric details and land use and land cover information that is not symbolized on conventional line maps, they make excellent supplements to the published maps. Pilot projects have demonstrated that digital scanning of aerial photos and rectification of scanned imagery to horizontal and vertical ground control can produce orthophoto digital data bases from which orthophotoquads at 1:12,000 and 1:24,000 were generated.

          USGS Information Services accepts fax and mail orders only.

          Visit the USGS at http://edcwww.cr.usgs.gov/webglis or http://mapping.usgs.gov
Topics
Mapping/GIS, Remote Sensing

Additional Topics/Tags/Keywords
Aerial Photography, Geographic Names, Orthophotoquads

Organization:
US Department of the Interior (DOI), US Geological Survey (USGS)
Address:
Information Services
Box 25286
Phone:
DescriptionNumber
City:
Denver
1.
Information Services (800) 435-7627
State/Province/Territory:
CO
2.
Earth Science Information Center(800) 872-6277
Zip/Postal Code:
80225
3.
EROS Data Center(605) 594-6151
Country:
United States
4.
Fax: Information Services (303) 202-4693
Branch Locations: