Summary
Working gas in storage was 3,429 Bcf as of Friday, September 7, 2012, according to EIA estimates. This represents a net increase of 27 Bcf from the previous week. Stocks were 342 Bcf higher than last year at this time and 284 Bcf above the 5-year average of 3,145 Bcf. In the East Region, stocks were 80 Bcf above the 5-year average following net injections of 38 Bcf. Stocks in the Producing Region were 147 Bcf above the 5-year average of 957 Bcf after a net withdrawal of 13 Bcf. Stocks in the West Region were 57 Bcf above the 5-year average after a net addition of 2 Bcf. At 3,429 Bcf, total working gas is above the 5-year historical range.

Working gas stocks in the Producing Region, for the week ending September 7, 2012, totaled 1,104 Bcf, with 207 Bcf in salt cavern facilities and 897 Bcf in nonsalt cavern facilities. Working gas stocks decreased 14 Bcf in the salt cavern facilities and remained at the previous week's level in the nonsalt cavern facilities since August 31. An historical series of the salt and nonsalt subtotals of the Producing Region is available for download at: wngsr_producing_region_salt.xls.

http://ir.eia.gov/ngs/ngs.html