This report tracks U.S. natural gas inventories held in underground storage facilities. The weekly stocks generally are the volumes of working gas as of the report date. The "net change" in reported stock levels reflects all events affecting working gas in storage, including injections, withdrawals, and reclassifications between base and working gas. The "implied flow" estimate represents movements of working natural gas into or out of underground natural gas storage facilities that excludes reportable reclassifications-those totaling 4 billion cubic feet (Bcf) or more-from the weekly "net change" in working natural gas. An example of implied flow can be see for the report from July 17, 2015. The "implied flow" may contain the effects of unpublished net revisions to working natural gas levels of less than 4 Bcf. Totals may not match sum of components because of independent rounding.

The complete documentation of EIA's estimation methodology is available in the report, Methodology for EIA Weekly Underground Natural Gas Storage Estimates.

Information about the method used to prepare weekly data to compute the 5-year averages, maxima, minima, and year-ago values for the weekly report can be found in Computing the 5-year Averages, Maxima, Minima, and Year-Ago Values for the Weekly Natural Gas Storage Report of the methodology report.

Regions Map

The weekly storage regions are:
East Region Connecticut, Delaware, District of Columbia, Florida, Georgia, Massachusetts, Maryland, Maine, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Vermont, Virginia, and West Virginia
Midwest Region Illinois, Indiana, Iowa, Kentucky, Michigan, Minnesota, Missouri, Tennessee, and Wisconsin
South Central Region Alabama, Arkansas, Kansas, Louisiana, Mississippi, Oklahoma, and Texas
Mountain Region Arizona, Colorado, Idaho, Montana, Nebraska, New Mexico, Nevada, North Dakota, South Dakota, Utah, and Wyoming
Pacific Region California, Oregon, and Washington

Three region archive files