National Oil and Gas Assessment

USGS Energy Resources Program provides periodic assessments of the oil and natural gas endowment of the United States and the World. This website provides access to new, prioritized, assessment results and supporting data for the United States, as part of the Energy Policy and Conservation Act (EPCA).

The USGS has conducted numerous assessments of undiscovered oil and gas in the Appalachian Basin, including studies of the Marcellus Shale. The region extends from Alabama to Maine. The following is an overview of the assessments.

The USGS has conducted several assessments of undiscovered oil and gas in formations in the Permian Basin of western Texas. This inlcudes the following.

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas potential of the Raton Basin–Sierra Grande Uplift Province 5041 of northeastern New Mexico and southeastern Colorado.

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Montana Thrust Belt Province 5027 of northwestern Montana.

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas potentional of the Southwestern Wyoming Province 5037 of southwestern Wyoming, northwestern Colorado, and northeastern Utah.

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas potential of the Powder River Basin Province 5033.

The U.S. Geological Survey (USGS) has conducted a number of geology-based assessments of undiscovered oil and gas resources in the Uinta-Piceance Basin (USGS Province 5020) of western Colorado and Eastern Utah. Recent assessments include.

The U.S. Geological Survey completed the following assessments of conventional and continuous oil and gas resources of the Devonian Three Forks Formation and Devonian and Mississippian Bakken Formation in the Williston Basin Province 5031 of North Dakota, Montana, and South Dakota.

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas potential of the Anadarko Basin Province 5058.

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas potential of the Wind River Basin Province 5035 in central Wyoming.

The U.S. Geological Survey (USGS) has updated the previous 2008 assessment of undiscovered, technically recoverable gas hydrate resources beneath the North Slope of Alaska. This new 2018 assessment again indicates the existence of technically recoverable gas hydrate resources―that is, resources that can be discovered, developed, and produced using current technology. Using a geology-based...