Sullivan Creek Falls
By Armen Suny · Last verified May 2026
Difficulty
Moderate
Trail Length
2.4 miles
Trail Type
Out And Back
Elevation Gain
350 ft
About Sullivan Creek Falls
Sullivan Creek Falls is a quiet, forested cascade tucked into Oregon’s Willamette National Forest and managed by the U.S. Forest Service. The falls sit along Sullivan Creek and offer a peaceful retreat among firs and mixed conifers, making it a rewarding destination for hikers who prefer a less-crowded natural setting. The site’s woodland character and approachable scale make it a pleasant half-day outing for families and day hikers alike. The most direct route to the falls follows the U.S. Forest Service’s NASTY ROCK Trail (Trail #3356). This out-and-back route is moderate in difficulty and covers roughly 2.4 miles round trip (about 2.22 GIS miles) with approximately 350 feet of elevation gain. As part of the Willamette National Forest trail network, NASTY ROCK provides a natural-surface path through classic Cascade forest, making the waterfall a satisfying reward at the end of a short, steady climb.
The Setting
Sullivan Creek Falls sits at 2,044 feet within Willamette National Forest, fed by the North Santiam River, in the hills of Oregon.
Trail & Hike Details
The Approach
The moderate hike follows Nasty Rock (#3356), a 2.4-mile out-and-back trail over natural surface. Expect 350 feet of elevation gain with grades of 12-20%. The trail is moderately developed (Class 2).
USFS Trail
NASTY ROCK #3356
Trail Class
Moderately Developed
Surface
Avg Grade
USFS Segment
2.22 miTrail Description
NASTY ROCK (USFS Trail #3356) is an out-and-back route of roughly 2.4 miles (≈2.22 GIS miles) with about 350 feet of elevation gain. The USFS classifies the trail as Class 2, with a native material surface and a typical grade of 12–20%, so expect sustained uphill sections that are moderately challenging but do not require technical gear. Trail footing is natural (dirt/forest floor), and the route is maintained by the U.S. Forest Service within the Willamette National Forest; plan for a moderate-paced hike to reach Sullivan Creek Falls.
What to Expect
Visitors can expect a peaceful hike through a forested area, culminating in a view of Sullivan Creek Falls. The waterfall may vary in flow depending on the season, with higher flows in spring and early summer due to snowmelt.
Accessibility
The trail is not wheelchair accessible. Uneven terrain and elevation changes require steady footing.
Frequently Asked Questions
🐶 Are Dogs Allowed at Sullivan Creek Falls?
❌ Dogs are not allowed
Are There Any Fees or Permits Required?
🆖 No fees required
🏊 Is There Swimming at Sullivan Creek Falls?
❌ Swimming is not allowed
When to Visit
Spring and early summer are the best times to visit, as the waterfall is likely to have the most water flow during these seasons.
Seasonal Access
The best time to visit is Spring, Summer, and Fall. Winter access may be limited. Check with Willamette National Forest for seasonal road closures.
Safety Information
Water temperature is currently 48°F — cold enough to cause numbness quickly. Avoid prolonged water contact and use caution near the falls.
Be cautious of slippery rocks near the waterfall. The trail may be muddy or uneven, especially after rain. Always stay on marked paths and avoid getting too close to the edge of the falls.
Current Water Conditions
1,190 ft³/s
Current discharge — how much water is flowing
Much lower than usual for this time of year
3.08 ft
Water depth at gauge
48°F
Very coldExpect numbness within minutes
7-Day Discharge Trend
What does this mean for your visit?
Flow is well below normal for this time of year, so the waterfall may be a trickle. Water temperature is very cold at 48 degrees F, expect numbness within minutes. Expect excellent dissolved oxygen levels. PH is normal at 7.5 and mineral content is typical.
Water Quality
Dissolved Oxygen
ExcellentSupports aquatic life
pH
NormalWithin healthy range (6.5-8.5)
Conductance
Dissolved minerals in the water
About This Gauge
This gauge is on a nearby waterway and may not reflect exact conditions at the falls.
Weather Forecast
Location & Access
Getting There
Sullivan Creek Falls is located in a remote area of Oregon. Access typically involves driving on forest roads, which may be unpaved or rough in sections. Specific directions should be verified with local resources or maps.
Get Directions on Google MapsParking
Parking availability is limited and may consist of roadside pullouts or small clearings near the trailhead.
Elevation
2044 feet above sea level
Coordinates
44.840556° N, -122.265556° W
Land Management
Managed by USFS
Visitor Tips & Gear
Wear sturdy shoes as the trail may be uneven. Bring insect repellent during warmer months, and check weather conditions before visiting. Cell service may be limited in the area.
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With 2.4 miles and 350 ft of elevation gain, sturdy boots and trekking poles will help on this moderate trail. Sun exposure on the trail makes good sun protection a must in summer.
Polarized Sunglasses (Knockaround)
Cuts glare off the water so you actually see the falls — and your photos turn out better too.
Columbia Watertight II Rain Jacket
Packs into its own pocket, seam-sealed, and keeps you dry from spray and surprise rain.
Earth Pak Waterproof Dry Bag
Keeps your phone and gear dry when waterfall mist soaks everything else.
Waterproof Phone Pouch (AiRunTech)
Cheap insurance — take photos right next to the falls without killing your phone.
Timberland Euro Sprint Mid Waterproof
Trusted waterproof boot with premium leather and grippy rubber sole — reliable on rocky, wet trails.
TrailBuddy Trekking Poles
Lightweight aluminum, cork grips, and flip-locks that actually hold — a best-seller for good reason.
Where to Stay
Rushing River Retreat
Remote Escape Riverside Home with Scenic Views
Walk to Detroit Lake! Family Home with Outdoor Oasis
Oregon Vacation Rental about half Mi to Santiam River!
Browse vacation cabins and private rentals nearby
Unique outdoor stays — tents, yurts, and treehouses
Rent a campervan or RV for your waterfall road trip
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Nearby Campground
Elk Lake Campground
6.9 miles away · 0 sites
This 17 site tent-only campground, located adjacent to the Bull of the Woods and Opal Creek Wildernesses, is full of beauty in the summer. Wildflowers are a beautiful sight in the campground's meadows around July. Swim or paddle in the quiet waters of the non-motorized lake, go for a great hike with views of multiple Cascade peaks, or just kick back and relax in the campground.
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Nearby Attractions
Other waterfalls and hiking trails in the area may be worth exploring. Check local maps for additional points of interest.
Wildlife
The area is home to a variety of wildlife, including birds, deer, and small mammals. Be cautious and respectful of the natural habitat.
Cities near Sullivan Creek Falls
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