The Board of Directors of Northwest Natural Gas Company (NYSE:NWN), dba NW Natural, has declared a quarterly dividend of 41.5 cents a share on the company's common stock. The dividends will be paid May 14, 2010, to shareholders of record on April 30, 2010. The indicated annual dividend rate is $1.66 per share. About NW Natural NW Natural is headquartered in Portland, Ore., and serves approximately 668,000 residential and business customers in Oregon and southwest Washington. It is the largest independent natural gas utility in the Pacific Northwest. The company has approximately $2.4 billion in total assets, which includes approximately 16 Bcf of underground gas storage capacity within its service territory at Mist, Ore. NW Natural has increased its dividends paid on common stock for 54 consecutive years.