The Board of Directors of Northwest Natural Gas Company (NYSE:NWN), dba NW Natural, has increased the quarterly dividend on the company's common stock to 44.5 cents from 43.5 cents per share. The dividends will be paid Nov. 15, 2011, to shareholders of record on Oct. 31, 2011. NW Natural will have paid $1.75 per share in dividends on its common stock in 2011, the 56th consecutive year in which the company's dividend payments have increased. The indicated annual dividend rate is now $1.78 per share. About NW Natural NW Natural (NYSE:NWN) is headquartered in Portland, Ore., and provides safe, reliable, cost-effective natural gas service to about 675,000 residential, commercial, and industrial customers through 14,000 miles of mains and service lines in western Oregon and southwestern Washington. It is the largest independent natural gas utility in the Pacific Northwest. The company has approximately $2.5 billion in total assets. The company operates and owns 16 Bcf of underground storage capacity in Mist, Ore., and also operates the designed 20 Bcf Gill Ranch underground storage facility in California, in which it owns a 75 percent undivided interest. Together, NW Natural and its subsidiaries currently own and operate underground gas storage facilities with designed storage capacity of approximately 31 Bcf in Oregon and California. Additional information is available at www.nwnatural.com.