Lake Union Boat Ramps

2 boat launches are mapped on Lake Union in King County, Washington.

Lake Union facts

Surface area757 acres
TypeLake/Pond
Average depthabout 19 ft (modelled estimate)
Water volumeabout 8,431 acre-feet (modelled)
Shoreline lengthabout 7.2 miles

Sources: USGS National Hydrography Dataset (public domain); HydroLAKES v1.0 (Messager et al. 2016, CC BY 4.0). Matched to this page by name and location; modelled values are approximate. See all sources.

Fish in Lake Union

Stocked by the state (2026 or earlier): Coho salmon.

Source: WDFW hatchery fish plants. Species lists come from state survey and stocking records, not a guarantee of what you will catch; check current state fishing regulations.

Counties