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Geo-referenced orthophotographs of the Snow River, Alaska, acquired September 1, 2018


Publication Date


Kinzel, P.J., and Legleiter, C.J., 2021, Geo-referenced orthophotographs of the Snow River, Alaska, acquired September 1, 2018: U.S. Geological Survey data release,


This data release consists of orthophotographs of the Snow River in Alaska acquired on September 1, 2018. The orthophotographs were produced from images obtained using a Hasselblad A6D-100C 100 megapixel digital mapping camera deployed within a pod mounted on the landing gear of a Robinson R44 helicopter. Images were acquired as the helicopter transited a series of flight lines designed to provide complete coverage, with ample overlap, of the study area along the Snow River. Also within the pod was an ATLANS GPS/Inertial Motion Unit (IMU) that recorded the position and orientation of the platform during the flight. This information was used to geo-reference the images by performing aerial triangulation and bundle adjustment within [...]


Originator :
Paul J Kinzel, Carl J Legleiter
Metadata Contact :
Paul J Kinzel
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Integrated Modeling & Prediction Division
USGS Mission Area :
Water Resources

Attached Files

Click on title to download individual files attached to this item.

“Compressed orthophotographs”
8.31 GB application/zip
“Thumbnail: Snow orthophotographs ”
thumbnail 67.98 KB image/jpeg
“List of individual files”
1.35 KB text/csv
Original FGDC Metadata

13.87 KB application/fgdc+xml

Material Request Instructions

For any questions regarding these data, please contact:

Paul Kinzel -, 303-278-7941
United States Geological Survey
4620 Technology Drive, Suite 400
Golden, CO 80403


The main purpose of these orthophotographs was to provide an ancillary dataset that could be used with a related lidar product and data release.


Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Thumbnail: Snow orthophotographs
Thumbnail: Snow orthophotographs


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  • USGS Data Release Products

Associated Items



Additional Information


Type Scheme Key
DOI doi:10.5066/P9G8LKCK

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