Chiwaukum Creek

Central CascadesBest May–Jun

Brushy Wenatchee Mountains trail known for rare Tweedy's lewisia blooms and heavy tick pressure.

4 miDistance
499ftElevation
3,350ftHigh Point
Out & BackRoute
12h+Drive
moderateCrowds
Fair in rain

About This Trail

Chiwaukum Creek is a short, low-elevation trail east of Stevens Pass known primarily for one thing: Tweedy's lewisia. This rare alpine flower, endemic to the Wenatchee Mountains, blooms here in early to mid-May and draws a steady trickle of wildflower enthusiasts each spring. The trail follows the creek through private property initially (stay on the designated path), then enters a narrow, brushy corridor through forest recovering from a past fire.

The approach is confusing. Signage is poor, a gated road and "no trespassing" signs on the private property make it seem like you are going the wrong way, and the trail itself is not well-marked. Recent volunteer work has cleared blowdowns at least two miles in to the riverside lunch logs. Beyond that point, the trail continues deeper into the drainage toward alpine meadows.

This is serious tick country. Multiple recent reports describe heavy deer tick infestations, especially in May when the lewisia blooms. Dogs are particularly vulnerable. Rattlesnakes have also been reported in the first mile. The trail carries a low WTA rating (2.0) not because the destination is bad, but because the access confusion, ticks, and trail conditions make for a rough experience. Come for the lewisia, bring tick repellent, and check yourself thoroughly afterward.

Seasonal Highlights

MayTweedy's lewisia bloom, the primary reason to visit
JunLate wildflowers, greener meadows upstream

Astronomy

MoonWaning Gibbous (70%)
Stargazingexcellent

Trail Conditions

Blowdowns cleared to about 2 miles in (to the river lunch logs) as of May 2025. Trail is brushy beyond that. Heavy tick pressure reported in May 2025 with multiple hikers finding 7+ ticks and dogs with 30+. Rattlesnakes active in the first mile in June.

Scorecard

moderateBeautyRare lewisia blooms along a scrappy east-side creek
Type 2Fun
1.5/5Difficulty
2.5/5Wildness
1/5Exposure
2.5/5Reward
1.5/5Effort
quietCrowds

Low traffic year-round. A modest bump in May during lewisia season.

Safety & Considerations

Today's Hazard

  • Strong sun — sunscreen, hat, and sunglasses recommended

Persistent Hazards

  • Heavy tick infestations in spring, especially May
  • Rattlesnakes in the first mile
  • Confusing access through private property with poor signage
  • Brushy, overgrown trail

Getting There

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Parking

Trailhead parking is poorly signed. Access crosses private property with gated roads and no trespassing signs that do not apply to trail users.

Approach

Trailhead is east of Stevens Pass. The initial section follows a private road - stay on the designated route despite confusing signage.

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