Ainsworth State Park

Cascade Locks, Oregon
Established 1933
284 acres

Ainsworth State Park is nestled in the Columbia River Gorge, offering lush forests, dramatic cliffs, and easy access to several iconic waterfalls. The park features a well-equipped campground, scenic picnic areas, and direct connections to the Historic Columbia River Highway and popular hiking routes.

Entrance Fee

Free

Visiting with Dogs

Dogs allowed on 6-foot leash; not in buildings or swim areas. Owners must clean up after pets.

Visitor Tips & Reviews

What Visitors Say

Loved for its serene forest setting, clean campsites, and easy access to Columbia Gorge waterfalls and trails, Ainsworth State Park is a top choice for nature lovers and campers.

Tips from Visitors

  • Arrive early; parking fills quickly on weekends.
  • Bring layers; weather changes rapidly in the Gorge.
  • Watch for poison oak along trails.
  • Pets must be leashed at all times.
  • Check for seasonal trail closures before visiting.
  • Pack out all trash to protect wildlife.

Amenities

RestroomsShowersRV SitesTent SitesPicnic AreasDrinking WaterDump StationParking

Nearby Attractions

Explore these attractions near Ainsworth State Park:

  • Multnomah Falls
    Oregon’s tallest waterfall, featuring a historic lodge, hiking trails, and breathtaking views.
    4 miles away
  • Bonneville Dam
    A major hydroelectric dam with visitor center, fish viewing, and interpretive exhibits on the Columbia River.
    7 miles away
  • Bridal Veil Falls State Scenic Viewpoint
    A picturesque waterfall and viewpoint with short trails and picnic areas.
    8 miles away

Things to Do at Ainsworth State Park

HikingCampingWildlife ViewingPicnickingPhotography

Camping at Ainsworth State Park

Ainsworth offers RV and tent camping, March–October, with full hookups, restrooms, showers; reservations recommended.

Hiking Trails

Ainsworth State Park offers scenic day hiking with lush forests, mossy trees, and access to several Columbia River Gorge trails. Hikers enjoy moderate routes with waterfalls, wildflowers in spring, and occasional wildlife sightings. The park’s trails connect to popular spots like Horsetail and Multnomah Falls, making it a great base for exploring the area. Expect well-maintained paths and beautiful views, especially during the spring and fall.

Ainsworth Loop Trail

Moderate

A scenic loop trail through lush forest, offering views of waterfalls and the Columbia River Gorge.

2.6 mi
1.5 hours
600 ft gain
Moderate difficulty

Horsetail Falls to Triple Falls

Moderate

A popular hike starting near Ainsworth, passing several waterfalls and ending at the picturesque Triple Falls.

4.4 mi
2.5 hours
900 ft gain
Moderate difficulty

Oneonta Gorge Trail

Easy

A short but adventurous hike through a narrow gorge, requiring some scrambling and wading.

1 mi
1 hour
150 ft gain
Easy difficulty

Gorge Trail #400 (Ainsworth Section)

Moderate

A forested trail segment with wildflowers, river views, and access to several connecting trails.

3.2 mi
2 hours
500 ft gain
Moderate difficulty

Directions

From Portland, take I-84 east to Exit 35, then follow the Historic Columbia River Highway east for 1 mile to the park entrance.

Frequently Asked Questions

Is camping available at Ainsworth State Park?

Yes, Ainsworth State Park offers a campground with tent and RV sites, restrooms, and showers. Reservations are recommended, especially during peak season.

Are there hiking trails accessible from the park?

Yes, the park provides access to several hiking trails, including connections to the Gorge Trail and nearby waterfalls like Multnomah Falls.

Is Ainsworth State Park pet-friendly?

Yes, pets are allowed in the park and campground, but they must be kept on a leash at all times and cleaned up after.

What amenities are available at the campground?

Amenities include restrooms, hot showers, drinking water, electrical hookups, picnic tables, and fire rings. There is also a dump station for RVs.

How close is Ainsworth State Park to Multnomah Falls?

Ainsworth State Park is about 4 miles east of Multnomah Falls, making it a convenient base for visiting the falls and other Columbia River Gorge attractions.

Is the park affected by train noise?

Yes, some visitors mention train noise from nearby tracks, especially at night. Earplugs are recommended for light sleepers.

Location
camping and backpacking gear

Don’t Forget the Essentials

Essential camping & hiking gear we recommend to make your park trip easier and more comfortable.

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