Lake Union

Lake Union
x̌ax̌čuʔ (Lushootseed)
Lake Union viewed from the north in 2012
Location of Lake Union in Washington, USA.
Location of Lake Union in Washington, USA.
Lake Union
Location of Lake Union in Washington, USA.
Location of Lake Union in Washington, USA.
Lake Union
LocationSeattle, Washington, U.S.
Coordinates47°38′21″N 122°20′01″W / 47.6392°N 122.3337°W / 47.6392; -122.3337 (Lake Union)[1]
Primary inflowsLake Washington Ship Canal
(Portage Bay from Montlake Cut)
Primary outflowsLake Washington Ship Canal
(Fremont Cut to Salmon Bay)
Catchment area571 square miles (1,480 km2)[2]
Basin countriesUnited States
Surface area580 acres (2.3 km2)[2]
Average depth34 feet (10 m)[2]
Max. depth50 feet (15 m)[2]
Water volume20,000 acre-feet (25,000,000 m3)[2]

Lake Union (Lushootseed: x̌ax̌čuʔ)[3][a] is a freshwater lake located entirely within the city limits of Seattle, Washington, United States. It is a major part of the Lake Washington Ship Canal, which carries fresh water from the much larger Lake Washington on the east to Puget Sound on the west. The easternmost point of the lake is the Ship Canal Bridge, which carries Interstate 5 over the eastern arm of the lake and separates Lake Union from Portage Bay. Lake Union is the namesake of the neighborhoods located on three of its shores: Eastlake, Westlake and South Lake Union. Notable destinations on the lake include Lake Union Park, the Museum of History & Industry (MOHAI), and the Center for Wooden Boats on the southern shore and Gas Works Park on the northern shore.

University of Washington campus frontage on Lake Union, 1919

The Aurora Bridge (officially the George Washington Memorial Bridge) carries State Route 99 over the western arm of Lake Union. The Aurora Bridge is so named because it carries Aurora Ave N down the western side of the lake. Lake Union's westernmost point can be considered the Fremont Cut, which is located just west of the Aurora Bridge and is spanned by the Fremont Bridge. The Fremont Bridge carries Fremont Ave N between the neighborhoods of Fremont and Queen Anne and separates Lake Union from the rest of the Lake Washington Ship Canal to the west.

  1. ^ U.S. Geological Survey Geographic Names Information System: Lake Union
  2. ^ a b c d e Cite error: The named reference kc was invoked but never defined (see the help page).
  3. ^ "The Waterlines Project Map" (PDF). The Burke Museum. 2019. Retrieved October 5, 2023.


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