U.S. Geological Survey (USGS)
The U.S. Geological Survey (USGS) is the nation's largest water, earth, and biological science and civilian mapping agency. It collects, monitors, analyzes, and provides scientific understanding of natural resource conditions, issues, and problems.
Website
U.S. Geological SurveyToll-free number
1-888-ASK-USGS (1-888-275-8747)
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Main address
12201 Sunrise Valley Dr.Reston, VA 20192
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