Annual Energy Outlook 2003 With Projections to 2025

Figure 10. Technically recoverable U.S. natural gas resources as of January 1, 2002 (trillion cubic feet).  For more detailed information, contact the National Energy Information Center at (202) 586-8800.
Onshore, State Offshore, and Alaska: U.S. Geological Survey (USGS), with adjustments to unconventional gas recovery resources by Advanced Resources, International. Federal (Outer Continental Shelf) Offshore: Minerals Management Service (MMS), with subsalt resources from the National Petroleum Council. Proved Reserves: EIA, Office of Oil and Gas. Note: Data reflect removal of intervening reserve additions between the dates of the USGS estimate (January 1, 1994) and the MMS estimate (January 1, 1999) and January 1, 2002.