USGS Digital Orthophoto Quadrangles

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Abstract: A Digital Orthophoto Quadrangle (DOQ) is a computer-generated image of an aerial photograph in which the image displacement caused by terrain relief and camera tilt has been removed. The DOQ combines the image characteristics of the original photograph with the georeferenced qualities of a map.

DOQs are black and white (B/W), natural color, or color-infrared (CIR) images with 1-meter ground ... View entire text
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Geographic Coverage
Spatial coordinates   
  N: 49.0   S: 24.0   E: -66.0   W: -126.0

Data Set Citation
Dataset Originator/Creator: U.S. Geological Survey (USGS) EROS Data Center (EDC)
Dataset Title: Digital Orthophoto Quadrangles
Dataset Release Date: 1997-05-14
Dataset Release Place: Menlo Park, CA USA
Dataset Publisher: U.S. Geological Survey
Data Presentation Form: Remote-sensing images
Online Resource:
Quality Attribute_Accuracy:
During photographic reproduction of the source photography, limited
analog dodging is performed to improve image quality. Analog dodging
consists of holding back light from certain areas of the sensitized
photographic material to avoid overexposure. The ... View entire text
Access Constraints None
Use Constraints There is no guarantee of warranty concerning the accuracy of these data. Users should be aware that temporal changes may have occurred since the data was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of their limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data set is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data set, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to for the USGS disclaimer.
Data Set Progress
Originating Center
Data Center
Earth Resources Observation and Science Center, U.S. Geological Survey, U.S. Department of the Interior Supplemental Info
Data Center URL:
Dataset ID: USGS_DOQ

Data Center Personnel
Phone: 605-594-6151
Phone: 800-252-4547
Fax: 605-594-6589
Email: lta at
Contact Address:
LTA Customer Services
U.S. Geological Survey
EROS Center
47914 252nd Street
City: Sioux Falls
Province or State: SD
Postal Code: 57198-0001
Country: USA
Distribution Media: Online download
Fees: Free download
Email: lta at
Contact Address:
Information Services Department
U.S. Geological Survey
City: Sioux Falls
Province or State: SD
Postal Code: 57198-0001
Country: USA
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Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2005-12-08
Last DIF Revision Date: 2013-05-02
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