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An official website of the United States government

We guide and fund federal geologic mapping projects.

Explore FEDMAP

We provide matching-funds to State Geological Surveys.

Explore STATEMAP

We help support the next generation of geologic mappers.

Explore EDMAP

We manage the National Archive for the Nation's geology.

Discover the NGMDB

We help understand the geology of the Great Lakes region.

Explore GLGMC

National Cooperative Geologic Mapping Program

The National Cooperative Geologic Mapping Program (NCGMP) is the primary source of funds for geologic map production in the U.S. NCGMP funds geologic mapping projects through its FEDMAP, STATEMAP, and EDMAP components and the Great Lakes Geologic Mapping Coalition (GLGMC). The NCGMP also maintains the National Geologic Map Database (NGMDB) which serves as the National Archive for geologic maps. 

Click here to view Mapping in Progress!

The National Geologic Map Database

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The NGMDB is a Trusted Digital Repository and serves as the authoritative, comprehensive National Archive for maps and reports about the Nation's geology.

Explore the NGMDB

Geologic Maps are important for:

- critical minerals

- energy resources

- geologic hazard identification
   and mitigation 

- water resource identification
   and protection

- pollution prevention

- land-use decision-making

- engineering and infrastructure
   planning

- insurance and real estate concerns 

NCGMP Quick Links

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Association of American State Geologists (AASG)

News

2025 Best Student Geologic Map Competition Winners

2025 Best Student Geologic Map Competition Winners

USGS Unveils New National Geologic Map

USGS Unveils New National Geologic Map

USGS Geologic Mapping Project Supports Critical Mineral Exploration, Enhances Public Safety in the Southeast

USGS Geologic Mapping Project Supports Critical Mineral Exploration, Enhances Public Safety in the Southeast

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Publications

Strike-slip faulting and counterclockwise rotations along the southwest portion of the Lake Mead fault system, Boulder City–Hoover Dam Area, Nevada Strike-slip faulting and counterclockwise rotations along the southwest portion of the Lake Mead fault system, Boulder City–Hoover Dam Area, Nevada

No abstract available.
Authors
L. Sue Beard, Zachary Anderson, Tracey J. Felger
By
National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center

Timing and geometry of the Chemehuevi Formation reveal a late Pleistocene sediment pulse into the Lower Colorado River Timing and geometry of the Chemehuevi Formation reveal a late Pleistocene sediment pulse into the Lower Colorado River

The Chemehuevi Formation is a distinctive 50−150-m-thick wedge-shaped Pleistocene sedimentary unit deposited by the Colorado River. It lines the perimeters of the river’s floodplains and bedrock canyons for more than 600 km between the mouth of the Grand Canyon and the delta region in the Gulf of California. The formation is composed of a basal tan to light-yellowish-brown and pale...
Authors
Harrison J. Gray, Kyle House, Adam M. Hudson, Jorge A. Vazquez, Ryan S. Crow, Miriam Primus, Shannon A. Mahan, Tammy M. Rittenour, Keith A. Howard
By
National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center, Geosciences and Environmental Change Science Center, Denver Radiogenic Isotope Lab, Luminescence Dating Laboratory

New 10Be-26Al isochron burial dating informs the Pliocene and Pleistocene evolution of the lower Colorado River, southwestern United States New 10Be-26Al isochron burial dating informs the Pliocene and Pleistocene evolution of the lower Colorado River, southwestern United States

Four new 10Be-26Al isochron burial ages ranging from 4.4 to 2 Ma on ancestral Colorado River deposits in the lower Colorado River corridor (LCRC) help constrain the river’s evolution during the Pliocene and early Pleistocene. They help fill a gap between previous work that focused on older and younger deposits: Older dated deposits include the 5 Ma Bouse Formation, which records the...
Authors
Yeong Bae Seong, Ryan S. Crow, Kyle House, Keith A. Howard, Cho-Hee Lee, Byong Yong Yu
By
National Cooperative Geologic Mapping Program, Geology, Minerals, Energy, and Geophysics Science Center
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Science

Alaska geology map revealed

Alaska Databases and Information Analysis

We provide GIS and database support for Alaska-based research projects, including database design, data capture, and maintenance, GIS analysis and display, and production of datasets and metadata for publication and data releases.
By
Mineral Resources Program, National Cooperative Geologic Mapping Program, Alaska Science Center
Alaska Databases and Information Analysis

Alaska Databases and Information Analysis

We provide GIS and database support for Alaska-based research projects, including database design, data capture, and maintenance, GIS analysis and display, and production of datasets and metadata for publication and data releases.
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Map of the contiguous US with areas highlighted in green.

Geologic Mapping and Foundational Science

We deliver detailed mapping and foundational science about our Nation and world’s geology and geologic resources.
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, National Cooperative Geologic Mapping Program, National Geological and Geophysical Data Preservation Program
Geologic Mapping and Foundational Science

Geologic Mapping and Foundational Science

We deliver detailed mapping and foundational science about our Nation and world’s geology and geologic resources.
Learn More
Map of Alaska with multiple colors throughout the state representative areas of different geology.

Geologic Map of Alaska

In January 2016, the U.S. Geological Survey released the first ever digital geologic map of Alaska. This map reflects more than a century of work and provides a visual context for the abundant mineral and energy resources found throughout the state. The map also is available to use in three different formats: a professional GIS database, a public interactive version via a web browser, and an...
By
Geology, Energy, and Minerals Mission Area, Mineral Resources Program, National Cooperative Geologic Mapping Program, Alaska Science Center, Earth Mapping Resources Initiative (Earth MRI)
Geologic Map of Alaska

Geologic Map of Alaska

In January 2016, the U.S. Geological Survey released the first ever digital geologic map of Alaska. This map reflects more than a century of work and provides a visual context for the abundant mineral and energy resources found throughout the state. The map also is available to use in three different formats: a professional GIS database, a public interactive version via a web browser, and an...
Learn More
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