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The USGS provides the mapping and digital geospatial foundation for the Nation.

Filter Total Items: 340
Photo taken from the air showing Hoover Dam with a lake backed up behind it and and a river flowing away from it.
The public may download digital aerial photography products at no cost via EarthExplorer or GloVis. Customers can request a higher resolution aerial or declassified image to be scanned for a $30.00 per frame service fee.  A $5.00 handling charge will be applied per request.  All requests will need to be made online through EarthExplorer. A...
Image: USGS Cartographer at Work
Yes, customers will need to acquire at least 2 consecutive digital images from the same roll and then create transparencies or contact prints to view them with a stereoscope. A stereoscope is a device for viewing a stereoscopic pair of separate images, depicting left-eye and right-eye views of the same scene, as a single three-dimensional image....
Image: USGS Mapper at Work
Each National Aerial Photography Program (NAPP) frame covers a 5-by-5 mile area at 1:40,000 scale. Each National High Altitude Photography (NHAP) color infrared (CIR) frame covers an 8-by-8 mile area at 1:58,000 scale. Each NHAP black-and-white (B/W) frame covers an 11-by-11 mile area at 1:80,000 scale. Each Alaska High Altitude Photography (AHAP...
Historical Aerial View of CERC's Campus
No. A photographic enlargement only appears to show more detail than a 9-by-9 inch photograph. Photographic resolution (or image resolution) deteriorates with each enlargement factor. Photographic reproduction of images from the USGS film archives ceased on September 3, 2004. For those who specifically need paper or film products, there is a list...