Puget Sound Regional Council major cities are Seattle, Bellevue in King County, Tacoma in Pierce County, Everett in Snohomish County, and Bremerton in Kitsap County. The region's population was estimated to be over 3.8 million as of April 2014. In 1956 the four counties of the Puget Sound region established the Puget Sound Regional Planning Conference, which changed its name to the Puget Sound Governmental Conference (PSGC) in 1958. It launched the Puget Sound Regional Transportation Study (PSRTS) in 1962 with support from the Washington State Highway Commission, the U.S. Bureau of Public Roads (predecessor of the Federal Highway Administration), and the U.S. Department
Puget Sound salmon recovery spawn in the rivers running into the Puget Sound. Some Puget Sound rivers that salmon swim up are: Nooksack, Samish, Skagit, Baker, Cascade, Stillaguamish, Snohomish, Skykomish, Green, Puyallup, Carbon, Nisqually, Deschutes rivers. Salmon also go up Lake Washington, Lake Sammamish, Kennedy Creek, and Minter Creek. The life cycle of salmon requires specific conditions within the chain of connected environments. Salmon typically live 3–6 years, which often changes depending on life conditions. While some salmon stay within the Puget Sound, others will migrate and live deeper in the Pacific Ocean. The salmon begin their journey as fertilized eggs in a stream