Lost Lake (Mason County)

2021 Trout Derby

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Lost Lake is open year-round for fishing. Some cutthroat trout broodstock weighing about one pound each are stocked in March. The lake is stocked in April and May with catchable-size (10"-12") and again in the fall with good numbers of larger jumbo rainbow trout to provide a fishery through the winter. 

Two-pole fishing is allowed

Shoreline access: Good - limited to the WDFW access area

WDFW water access areas on this lake

Species you might catch

Lake information

County: Mason
Acreage: 122.60 ac.
Elevation: 495 ft.
Center: 47.157153, -123.247505
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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

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

Kokanee

The Kokanee fishery typically lasts from April-October before the adults leave the lake to spawn in tributaries starting in late-October and early-November. Fishing is best in the spring before they move into deeper water to avoid warming water temperatures, but they can be targeted throughout the summer in deeper offshore areas near the thermocline. There may be a slight uptick in some waters in the fall as adults return to shallower water and move near shore towards spawning tributaries.

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