Agency URL: http://www.usgs.gov/
The U.S. Geological Survey (USGS) was established by the Organic Act of March 3, 1879 (43 U.S.C. 31). USGS classifies public lands, examines the geological structure, and assesses the energy, mineral, water, and biology resources and products within and outside the national domain.
USGS provides relevant, objective scientific studies and information used to help address issues and solve problems dealing with natural resources, natural hazards, and the environmental effects on human and wildlife health.
This agency has published 644 documents since 1994.