U.S. Geological Survey
From ASDSO Dam Safety Toolbox
The United States Geological Survey, abbreviated USGS and formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. Historically, the USGS has provided important topographic, geologic, hydrologic and other types of data in support of dam safety efforts. Learn more at: https://www.usgs.gov/