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Before construction of the Lake Washington Ship CanalThe Lake Washington Ship Canal which runs through Seattle, Washington connecting Lake Washington to Puget Sound, is a system consisting of, from east to west, Union Bay, the Montlake Cut, Portage Bay, Lake Union, the Fremont Cut, Salmon Bay, the Hiram M. in 1916, Lake Washington's outlet was the Black RiverThe Black River of King County, Washington, once drained Lake Washington and the Cedar River into Elliott Bay via the Duwamish River. In 1911, the Cedar River flooded Renton. To avoid future floods, in 1912 the Cedar was diverted into Lake Washington., which joined the Duwamish RiverThe Duwamish River is the name of the lower 12 miles (19 km) of Washington state's Green River. Its industrialized estuary is known as the Duwamish Waterway . At one time, the Black River and the White and Green Rivers, which combined at Auburn, joined at and emptied into Elliott BayPacific Coast Co. 1907 Elliott Bay is the body of water on which Seattle, Washington is located. A line drawn from Alki Point in the south to West Point in the north serves to mark the generally accepted division between the bay and the open sound. Part o. When the canal was opened, the level of the lake dropped nearly nine feet (3 m). The canal to Puget SoundPuget Sound is an arm of the Pacific Ocean in the Pacific Northwest of the United States. It was named by George Vancouver for Lieutenant Peter Puget, who explored its southern end in May 1792. Vancouver claimed it for Great Britain on June 4, 1792. It be became the lake's sole outlet, causing the Black River to dry up and disappear, as a few years earlier, the Cedar River had been diverted to empty into Lake Washington instead of the Black.
Four bridges cross Lake Washington. The Evergreen Point Floating BridgeThe Evergreen Point Floating Bridge officially the Governor Albert D. Rosellini Bridge--Evergreen Point is the longest floating bridge in the world, at 7,578 feet. Built in 1963, it carries Washington State Route 520 across Lake Washington from Seattle to (officially the Governor Albert D. RoselliniAlbert Dean Rosellini ( January 21, 1910 ) was the Governor of Washington between 1957 and 1965. He was a member of the Washington State Senate between 1939 and 1947. He is a Democrat. Rosellini, Albert D. Governors of Washington. Bridge--Evergreen Point) carries Washington State Route 520Washington State Route 520 is a freeway in the state of Washington, U. It extends 14 miles from Seattle in the west to Redmond in the east. Originating at Interstate 5 in Seattle at the north end of Capitol Hill, it crosses Portage Bay on a viaduct, runs from Seattle's Montlake neighborhood to Medina. The Lacey V. Murrow Memorial Bridge and the Third Lake Washington Bridge (officially the Homer M. Hadley Memorial Bridge) carry Interstate 90 from Seattle's Mount Baker neighborhood to Mercer Island. The East Channel Bridge carries Interstate 90 from Mercer Island to Bellevue. The Evergreen Point, Lacey V. Murrow, and Third Lake Washington bridges are the longest, second longest, and fourth longest floating bridges in the world, respectively.