The United States Geological Survey defines Puget Sound as a bay with numerous channels and branches. It extends 144 km (90 miles) south from the Strait of Juan de Fuca to Olympia, Washington; the northern boundary is formed, at its main entrance, by a line between Point Wilson on the Olympic Peninsula and Point Partridge on Whidbey Island; at a second entrance, between West Point on Whidbey Island, Deception Island, and Rosario Head on Fidalgo Island; at a third entrance, the south end of Swinomish Channel between Fidalgo Island and McGlinn Island. [1]
The urban region of the same name is centered around Seattle, Washington and consists of nine counties, two urban center cities and four satellite cities. Both urban core cities have large industrial areas and seaports plus a high-rise central business district. The satellite cities are primarily suburban, featuring a small downtown core and a small industrial area or port. The suburbs consist mostly of residences, strip malls, and shopping centers.
Puget Sound is an arm of the