Skip Links

USGS Home Contact USGS Search USGS

National Assessment of Oil and Gas Fact Sheet

Assessment of Undiscovered Oil and Gas Resources of the Williston Basin Province of North Dakota, Montana, and South Dakota, 2008

Using a geology-based assessment method, the U.S. Geological Survey estimated mean undiscovered volumes of 3.8 billion barrels of undiscovered oil, 3.7 trillion cubic feet of associated/dissolved natural gas, and 0.2 billion barrels of undiscovered natural gas liquids in the Williston Basin Province, North Dakota, Montana, and South Dakota. (See “Introduction” in Fact Sheet for additional information.)

Version 1.0 Posted October 2008 Report PDF (867 kB) Visit the USGS Central Energy Team website at http://energy.cr.usgs.gov/oilgas/noga Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Suggested citation:

Anna, L.O., Pollastro, R.M., Gaswirth, S.B., Lewan, M.D., Lillis, P.G., Roberts, L.N.R., Schenk, C.J., Charpentier, R.R., Cook, T.A., and Klett, T.R., 2008, Assessment of undiscovered oil and gas resources of the Williston Basin Province of North Dakota, Montana, and South Dakota, 2008: U.S. Geological Survey Fact Sheet 2008–3092, 2 p.