Lake Union XáXu7cHoo |
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Lake Union seen (from the north, looking southward) in 2012, against the backdrop of Seattle.
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Location |
Seattle, Washington, United States |
Coordinates | 47°38′21″N 122°20′01″W / 47.6392°N 122.3337°WCoordinates: 47°38′21″N 122°20′01″W / 47.6392°N 122.3337°W |
Primary inflows | Lake Washington Ship Canal |
Primary outflows | Lake Washington Ship Canal |
Catchment area | 571 square miles (1,480 km2) |
Basin countries | United States |
Surface area | 580 acres (2.3 km2) |
Average depth | 34 feet (10 m) |
Max. depth | 50 feet (15 m) |
Water volume | 20,000 acre feet (25,000,000 m3) |
Lake Union is a freshwater lake entirely within the Seattle, Washington city limits and a major portion of the Lake Washington Ship Canal. Its easternmost point 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 its east and west shores: Eastlake and Westlake, respectively. The northern shore of the lake is home to Gas Works Park. Notable features of the southern portion of the lake—collectively known as the South Lake Union district—include Lake Union Park, Museum of History & Industry (MOHAI), and the Center for Wooden Boats.
The George Washington Memorial "Aurora" 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 east 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.
A glacial lake, its basin was dug 12,000 years ago by the Vashon glacier, which also created Lake Washington and Seattle's Green, Bitter, and Haller Lakes.