Rimrock Lake

This large Tieton River impoundment stretches along Highway US-12, about 10 miles east of White Pass. It is in the Wenatchee National Forest at 2,922 feet elevation (at the spillway).  It is open to fishing year-round.  Rimrock provides good fishing for eight- to 11-inch kokanee; with a generous kokanee catch limit of 10 fishRainbows are also available, some up to 16 inches.  This is normally one of the best and most popular kokanee-fishing destinations in Yakima County from early May through August.  Trolling and still fishing is effective and chumming is permitted.   There is a 5 trout daily limit (excluding kokanee) with no minimum size requirement.      

The lake is closed to fishing for bull trout.  Please carefully release any bull trout that are inadvertantly hooked.   

Public and private campgrounds are located by the lake and public and private launch ramps are available. The Forest Service charges a boat launch fee at their locations.

Two-pole fishing is allowed

Shoreline access: Good - Good shoreline access from Hwy 12 on the north side of the lake and by county roads on the south side of the lake.

Species you might catch

Lake information

County: Yakima
Acreage: 2546.30 ac.
Elevation: 2926 ft.
Center: 46.63891, -121.159766
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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

Westslope cutthroat trout

See chart for details.
Chart of fishing prospects throughout the calendar year


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