Rock Lake

One mile north of Ewan. This is the largest natural lake in eastern Washington. With a year-round open fishing season, this mixed species fishery has a reputation of providing an excellent fishery for Rainbow and Brown Trout. Largemouth bass, Bluegill and Crappie are also available from this lake.

The boat launch is privately owned but maintained by WDFW which allows for public access.  The access is a rough boat ramp; launch your vessel with caution, and please clean up after yourselves.

Two-pole fishing is allowed

Shoreline access: Good - Although the most anglers fish this large lake from boats, shoreline fishing access is available near the boat launch area.

Species you might catch

Lake information

County: Whitman
Acreage: 2189.60 ac.
Elevation: 1728 ft.
Center: 47.181857, -117.679924
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Fishing resources

Catchable fish plants
Release Location: ROCK LK (WHIT)
Stock Date Species Number Released Number of Fish Per Pound Facility
Oct 16, 2024 Rainbow 13,500 3 LYONS FERRY HATCHERY
Oct 14, 2024 Rainbow 3,720 3 LYONS FERRY HATCHERY
Oct 26, 2022 Rainbow 9,240 2.8 LYONS FERRY HATCHERY
Oct 28, 2021 Rainbow 3,306 2.9 LYONS FERRY HATCHERY
Oct 28, 2021 Rainbow 10,080 2.8 LYONS FERRY HATCHERY
Oct 27, 2021 Rainbow 13,630 2.9 LYONS FERRY HATCHERY
Oct 19, 2020 Rainbow 13,620 3 LYONS FERRY HATCHERY
Sep 9, 2016 Rainbow 6,300 3 LYONS FERRY HATCHERY
Apr 14, 2015 Rainbow 2,958 2.9 FORD HATCHERY
Oct 7, 2014 Rainbow 26,077 3 LYONS FERRY HATCHERY
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

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

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

Bluegill

Bluegill can be caught year-round, but fishing is best in the warm months of Summer. Fishing improves throughout the spring, peaking during the spawn in early-Summer. Fish move offshore into deeper waters through the fall as water temperatures cool making it more difficult to target them. Winter is the most difficult season in which to catch Bluegill, but persistent anglers can find them in schools of like-sized fish offshore.
Chart of fishing prospects throughout the calendar year

Pumpkinseed Sunfish

Pumpkinseed Sunfish are ubiquitous in most lowland lakes and readily caught year-round. Fishing is best in the spring and summer, peaking during the spawn in June. Fish move offshore into deeper waters through the fall as water temperatures cool making it more difficult to target them. Winter is the most difficult season to catch Pumpkinseed, but persistent anglers can find nice-sized schools offshore.
Chart of fishing prospects throughout the calendar year

Brown bullhead

Fishing improves throughout the spring, peaking before the spawning period in May and June. Fishing may pick up in early Fall, followed by a decrease in action as waters cool. Winter is a difficult time to target this species.
Chart of fishing prospects throughout the calendar year

Photos
Rock Lake
Photo by WDFW