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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.

Toll-free number

1-888-ASK-USGS (1-888-275-8747)

Main address

12201 Sunrise Valley Dr.
Reston, VA 20192

Have a question?

Ask a real person any government-related question for free. They will get you the answer or let you know where to find it.