Island Lake (Mason County)

2024 Trout Derby lake

Starting soon! For more information about how the trout derby works, important dates, and prizes, visit the 2024 Trout Derby page.

Island Lake is open year-round for fishing. The lake is stocked in April and May with catchable-size (10"-12") and some larger jumbo and triploid Rainbow Trout.  The daily trout limit is 5 fish. The lake also provides fair fishing for largemouth and smallmouth bass and good fishing for yellow perch.

There is a state access with boat ramp and one toilet. See Washington State Parks website for ADA accessibility  information.

Two-pole fishing is allowed

Shoreline access: Good - There is shoreline fishing access only at the WDFW boat launch. There are many overhead trees.

Species you might catch

Lake information

County: Mason
Acreage: 104.90 ac.
Elevation: 230 ft.
Center: 47.248735, -123.11793
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Fishing resources

Catchable fish plants
Release Location: ISLAND LK (MASO)
Stock Date Species Number Released Number of Fish Per Pound Facility
Oct 2, 2018 Rainbow 2,119 1.3 LAKEWOOD HATCHERY
Apr 2, 2018 Rainbow 4,400 2.38 EELLS SPRINGS
Apr 2, 2018 Rainbow 2,180 1.3 LAKEWOOD HATCHERY
Oct 2, 2017 Rainbow 2,100 1 EELLS SPRINGS
May 12, 2017 Rainbow 106 0.7 TROUT LODGE COMMERCIAL
Apr 19, 2017 Rainbow 6 0.3 TROUT LODGE COMMERCIAL
Apr 4, 2017 Rainbow 2,180 1.3 TROUT LODGE COMMERCIAL
Apr 3, 2017 Rainbow 4,400 2.5 EELLS SPRINGS
Oct 4, 2016 Rainbow 920 0.86 EELLS SPRINGS
Oct 4, 2016 Rainbow 880 0.85 EELLS SPRINGS
Visit the Catchable Trout Plants page for a more detailed search of trout plants in other bodies of water. To view and download the source data for this table visit the WDFW Fish Plants dataset on data.wa.gov.

Fishing prospects calendar

Rainbow trout

Fishing success for Rainbow Trout is generally best in the spring when thousands of fish are stocked statewide, but they can be caught year-round in most waters with a little patience and persistence. Success remains high into June and gradually declines as water temperatures increase and fish move offshore to stay cool. Fish that escaped the spring harvest return to the nearshore areas in the fall as waters cool off. Some waters may also be stocked again in the fall further boosting catch rates.
Chart showing 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