Since 1998, natural gas production has surged from northeast Texas and the Rocky Mountain regions. According to the Energy Information Administration, between 1998 and 2006, production grew 114% from northeast Texas and 86% from three Rocky Mountain states. Texas Railroad Commission districts 5, 6 and 9 grew production by 1 Tcf during the period, thanks to sterling results in the Barnett shale, Cotton Valley and Bossier plays. Rocky Mountain states Wyoming, Colorado and Utah grew their natural-gas production by nearly 1.5 Tcf, mainly from massive tight-sand field developments. Wyoming led the group with addition of 857 Bcf. To take a look at EIA's 2006 Annual Report, its most recent, click here. --Peggy Williams, Senior Exploration Editor, Oil and Gas Investor