The U.S. Geological Survey hosts the National Geologic Map Database (NGMDB). This interactive tool serves as a national archive for high-quality, standardized geologic maps created by the U.S. Geological Survey and state geological surveys.
The MapView section of the NGMDB displays geologic maps from across the country dating back to 1879. The database is searchable by address, and results can be narrowed further using scale and date filters.
The American Geosciences Institute (AGI) has launched a new online resource, the Geological Surveys Database, to support the public discovery of a critical source of reliable geoscience information. This new database provides a state-of-the-art portal for decision makers and others to search and discover state geological survey publications and U.S. Geological Survey factsheets.
In 2017, the U.S. produced over 774 million short tons of coal1. Coal in the U.S. is produced in three broad regions: Appalachian (Alabama, Eastern Kentucky, Maryland, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia), Interior (Arkansas, Illinois, Indiana, Kansas, Louisiana, Mississippi, Missouri, Oklahoma, Texas, Western Kentucky), and Western (Alaska, Arizona, Colorado, Montana, New Mexico, North Dakota, Utah, Washington, Wyoming).