Puget Sound Regional Council Puget Sound Regional Council The Puget Sound Regional Council (PSRC) is a metropolitan planning organization that develops policies and makes decisions about transportation planning, economic development, and growth management throughout the four-county Seattle metropolitan area surrounding Puget Sound. It is a forum for cities, towns, counties, transit agencies, port districts, Native American tribes, and state agencies to address regional issues. The Puget Sound Regional Council serves the central Puget Sound region of Washington state. The region is made up of King County, Kitsap County, Pierce County, and Snohomish County, which collectively encompass and comprise 73 cities and towns. The five
Puget Sound the ice sheets had retreated. Because the rate of rebound was not synchronous with the post-ice age rise in sea levels, the bed of what is Puget Sound, filled alternately with fresh and with sea water. The upper level of the lake-sediment Lawton Clay now lies about above sea level. The Puget Sound system consists of four deep basins connected by shallower sills. The four basins are Hood Canal, west of the Kitsap Peninsula, Whidbey Basin, east of Whidbey Island, South Sound, south of the Tacoma Narrows, and the Main Basin, which is further subdivided into Admiralty Inlet and the