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LandSat7 image of the San Gorgonio Pass area, Riverside County, California.

Published by U.S. Geological Survey | Department of the Interior | Catalog Last Checked: August 01, 2026 at 06:13 AM | Dataset Last Updated: November 17, 2020 at 12:00 AM
In the early 1970's, the U.S. Geological Survey (USGS) entered into a partnership with the National Aeronautic and Space Administration (NASA) to provide repetitive global images of the earth's landmasses taken from a satellite flown at an altitude of approximately 438 miles. Onboard the 1999 Landsat7 satellite, the instrument used is an 8-band multispectral scanning radiometer that produces high-resolution images of the earth using bandwidths between 15 and 60-meter pixel resolution.

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