Lakes / Washington / Lake Union
Lake Union, Washington
757 acres
Surface Area
16 ft
Surface Elevation
Where It Sits, and How Deep It Goes
Locator - Washington
47.64 degrees N, 122.33 degrees W - King County. State and county outlines drawn from Census boundary data; the lake marker is placed by its Washington DFW coordinates, not by eye. Schematic - not a survey map.
How Lake Union Stacks Up
- About 2 miles from Seattle, as the crow flies.
- 5 fish species on the WDFW list for this lake.
Fish Species
Black crappieCoastal cutthroat trout (resident)Largemouth bassSmallmouth bassYellow perch
Species recorded for this lake. Presence only - no abundance ratings.
Facts and Figures
Waterbody ID{065BCF33-33B5-4BB8-952E-19D21B378641}
CountyKing
Lake TypeLake
Coordinates47.6417, -122.3301
Largest Lakes in Washington
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Franklin D Roosevelt Lake | Ferry | 71,323 acres | - |
| 2 | Lake Umatilla | Klickitat | 50,042 acres | - |
| 3 | Lake Chelan | Chelan | 32,677 acres | About 1,500 ft |
| 4 | Banks Lake | Grant | 26,879 acres | - |
| 5 | Lake Wallula | Benton | 26,343 acres | - |
Sources: Washington DFW; USGS NHD via WA Dept of Ecology lake data (ID {065BCF33-33B5-4BB8-952E-19D21B378641}). Verified October 30, 2026.