Lake Union

The fishery here is poorly documented. Species present include Smallmouth Bass, Largemouth Bass, Yellow Perch, Black Crappie, other sunfish and Brown Bullhead. An occasional Coastal Cutthroat Trout is also caught. Migratory salmon and Steelhead Trout use the lake as a pathway to lakes Washington and Sammamish. Fish production is probably affected by high salinity in the lower portions of this lake.

Two-pole fishing is NOT allowed

Shoreline access: Good - Shoreline access limited to Gas Works Park (City of Seattle).

Species you might catch

Lake information

County: King
Acreage: 1030.50 ac.
Elevation: 17 ft.
Center: 47.646541, -122.343594
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Fishing resources

Fishing prospects calendar

Coastal cutthroat trout (resident)

Fishing is best for Coastal Cutthroat in the spring and fall. There is a summer lull as fish move offshore into deeper waters to escape the summer heat in July and August. Catch is lowest in the late-winter while adults are spawning in tributary streams.
Chart of fishing prospects throughout the calendar year

Largemouth bass

Fishing improves throughout the spring as waters warm and fish move onshore, peaking during the spawn. Summer is a slight lull though dawn/dusk hours can be very good. Catch improves in Fall as waters cool, vegetation begins to die back, and prey becomes more available. Winter is the hardest time because fish are offshore and slow moving.
Chart of fishing prospects throughout the calendar year

Smallmouth bass

Fishing improves throughout the spring as waters warm and fish move onshore, peaking during the spawn. Summer is a slight lull though dawn/dusk hours can be very good. Catch improves in Fall as waters cool, vegetation begins to die back, and prey becomes more available. Winter is the hardest time because fish are offshore and slow moving.
Chart of fishing prospects throughout the calendar year

Yellow perch

Yellow Perch can be caught year-round. Fishing is best in the summer after they finish spawning in April-May. Fish can be readily angled through the summer from both the shore and boat. Catch begins to decline in the fall as water temperatures cool and fish move offshore forcing anglers to pursue them in boats. Successful fishing for Yellow Perch in the winter involves either targeting schools in deep water from boats or through the ice.
Chart of fishing prospects throughout the calendar year

Black crappie

Fishing improves throughout the Spring, peaking during the spawn. Summer is a slight lull, while Fall sees an improvement as waters cool, vegetation dies back, and prey becomes more available. During winter, the bite is slower, but anglers can have great success fishing through the ice when conditions are safe.
Chart of fishing prospects throughout the calendar year

Photos
Lake Union
Photo by WDFW