미국의 지질, 천연자원 및 자연재해를 연구하는 정부 과학 기관.
The United States Geological Survey; a scientific agency of the United States government that studies the landscape of the United States, its natural resources, and the natural hazards that threaten it.
예문:
"The USGS reported a magnitude 5.4 earthquake near the coast of California this morning."
"Scientists often rely on USGS topographical maps for precise environmental field studies."
"The USGS monitors water quality and flow rates in rivers across the country."