Congress passed the National Cooperative Geological Mapping Act twenty years ago, on May 4, 1992.
The National Cooperative Geologic Mapping
Program (NCGMP) is the primary source of funds for the production of geologic maps in the United States and provides accurate
geologic maps and three-dimensional framework models that help to
sustain and improve the quality of life and economic vitality of the
Nation and to mitigate natural hazards.
The NCGMP represents 2 decades of
successful cooperation among Federal (FEDMAP),
and university (EDMAP)
partners to deliver digital geologic maps to customers. Each of
these three components has a unique role, yet all work cooperatively
to select and map high-priority areas for new geologic maps.
Geologic mapping data from all of North America are presented via
the National Geologic Map
Database, and a common set of geologic map standards is being
developed by the NCGMP in cooperation with the North American Geologic Map Data
Model Steering Committee.
The USGS National Cooperative Geologic Mapping Program is congressionally mandated by the National Geologic Mapping Act of 1992.
[Much of this post is taken from the program page on the USGS website]