Northwest Gas Pipeline Corporation

Related Pages

Gas Pipelines in USA

Williams Gas Pipelines

Pipeline News

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Summary Information

  • Source: San Juan basin
  • Destination: Sumas, Washington
  • Ownership: Williams
  • Website:
  • Length: kilometres (4,000 miles)
  • Capacity: 3.8 billion cubic feet per day
  • Status: Operating


  • The Northwest Pipeline system is a primary artery for the transmission of natural gas to the Pacific Northwest and Intermountain Region.
  • It is a bi-directional transmission system crossing the states of Washington, Oregon, Idaho, Wyoming, Utah and Colorado.
  • Northwest’s bi-directional system provides access to British Columbia, Alberta, Rocky Mountain and San Juan Basin gas supplies.
  • Northwest Pipeline owns a one-third interest in the Jackson Prairie underground storage facility in Washington and contracts with a third party for storage service in the Clay basin underground field in Utah.
  • The pipeline is connected to the White River Natural Gas Hub in Rio Blanco County, Colorado and the Opal Natural Gas Hub
  • It interconnects with the TransWestern Gas Pipeline and the Paiute Gas Pipeline at the Idaho-Nevada border


  • 1999 - South Mist Storage Link Phase III completed
  • 2002 - Gray Harbor Lateral Completed
  • 2003 - Ridges Basin Dam Project, Evergreen Expansion & Rockies Expansion completed
  • 2004 - Everett Delta Lateral Completed
  • 2006 - Capacity Replacement Project Completed
  • 2007 - Parachute Expansion Completed
  • 2008 - Connection made to White River Natural Gas Hub
  • 2010 - Sundance Trail Expansion Project completes connection to Opal Natural Gas Hub

Other Information

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  1. North West Pipeline, Williams
  2. EIA Natural Gas Pipeline Projects 1996-1999
  3. EIA Natural Gas Pipeline Projects 2000-2009
  4. EIA Natural Gas Pipeline Projects 2010-2014
  5. Questar Pipeline and Enterprise Begin Operations of the White River Hub in Colorado
  6. Northwest Pipeline GP Completes Sundance Trail Expansion Project

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