Oneonta Tunnel
Tunnel
04.5 (98)
Cascade Locks, OR 97014
FallsOR
Oneonta Falls
By Hidden Swimming Holes Team · Record updated
Background: generated illustration, not a photograph of this location.
Check the Lower Oneonta Gorge closure before planning a trip. Learn why the old wading route is retired and why Upper Oneonta Falls is a different destination.
Swimming temporarily closed
Do not enter the closed lower gorge or follow the old creek-wading route. Closure applies to the gorge between the Historic Columbia River Highway and the Horsetail Falls Trail bridge over Oneonta Creek; it is not a claim that every upper trail is closed.
Official sources checked:
Water type
Falls
Access
Swimming temporarily closed
Fee
No admission price makes the closed gorge available. Check separate parking or permit terms for any other authorized outing.
Best season
Do not plan a lower-gorge swim. Select a separate authorized outing after checking its current notices
Nearby towns
Portland, Gresham
Water body
Oneonta Creek In Lower Oneonta Gorge; Distinct From Upper Oneonta Falls And The Columbia River
Location
Map & Directions
Nearby towns
Portland, Gresham
Access location not verified
45.58983, -122.0753
Recorded coordinates have not been source-checked. Confirm the entrance and legal access before using directions.
Sources & checks
This is a desk-researched listing. A record update or map check does not confirm current swimming permission or water conditions.
- Swimming rules
- Official sources checked . See the rules above and check for current closures.
- Access location not verified
- The recorded location has no completed source check. Confirm the entrance, legal access, and parking before travelling.
- Record updated
- · This is a data update, not a field visit.
Found an error? Send a correction with the location and a source. How we research listings.
Lower Oneonta Gorge: the old swimming route is closed
This listing historically described wading up Oneonta Creek to Lower Oneonta Falls. It should not have continued promoting that route as a current swimming outing. The instructions to descend creek steps and climb the logjam are retired.
Follow the current closure boundary
The Forest Service-sourced alert says the gorge remains closed between the Historic Columbia River Highway and the Horsetail Falls Trail bridge over Oneonta Creek. Do not enter or bypass barriers. An older order ending in July 2026 does not establish a reopening.
Upper Oneonta is not the same destination
Our saved Google record is for Upper Oneonta Falls. Its operational flag cannot establish access to the lower gorge. Open neighboring trails, road access or the tunnel also do not authorize a creek scramble. Check the manager's alerts for a separate outing rather than transferring its status to this page.
Read historical route descriptions carefully
Friends of the Columbia Gorge warns against traversing the damaged route and explicitly labels its route notes as pre-fire conditions. Low water, strong swimming ability or suitable footwear do not override the closure.
Why the saved photos are not a gallery yet
The collection mixes lower-canyon scenes, upper or trail-area waterfalls, a tunnel, a regional view and a close visitor portrait. We inspected all eight but did not approve them as one Lower Oneonta gallery. Destination identity and privacy come before filling a gallery with attractive but misleading photos.
Choose a separate authorized visit
This page remains available to explain the correction, but is excluded from swimming recommendations. Confirm the current status and rules of any alternative trail, viewpoint or campground. The historical coordinates remain an unverified reference, not a legal entrance.
Getting There
Do not follow our former instructions to descend the creek steps, wade upstream or climb the logjam. Lower Oneonta Gorge is closed. The retained historical pin is not a verified legal entrance or parking location. Check Forest Service alerts before choosing a separate open trail or viewpoint, and stay outside the closed gorge boundary. An open road, tunnel, neighboring trail or Upper Oneonta place record does not authorize creek entry. Respect barriers and do not seek an alternative way around them.
Quick Navigation
Access Notes
The Forest Service-sourced alert says the lower gorge remains closed. The alert record was updated September 1, 2026; no reopening confirmation was established. An older 2025 order's July 2026 end date is not evidence of reopening. The saved operational Google record concerns Upper Oneonta Falls, not permission to enter Lower Oneonta Gorge.
Plan Your Visit
Parking & Access
Confirm the entrance, parking arrangements, and legal access with the land manager. A map pin does not establish a public right of access. Follow posted routes and never block gates or driveways.
Regulations & Fees
Do not enter the closed lower gorge or follow the old creek-wading route. Closure applies to the gorge between the Historic Columbia River Highway and the Horsetail Falls Trail bridge over Oneonta Creek; it is not a claim that every upper trail is closed. Public park access does not necessarily include permission to swim. Respect private property and posted restrictions.
Seasonality & Flow
Water conditions can change quickly. This listing does not provide a current safety or water-quality assessment. Check official alerts and avoid entering water when conditions or permission are uncertain.
Nearby Facilities
Nearby places from saved public map data, not necessarily facilities at the swimming spot. Confirm access, hours, fees, and amenities with the operator before you drive.
Map data retrieved 2026-06-15
Oneonta Trailhead
Hiking area
0.2 mi
4.6 (153)
Oregon 97031
Horsetail Falls Trailhead
Hiking area
0.3 mi
4.8 (1307)
Historic Columbia River Hwy, Cascade Locks, OR 97014
Park named for its characteristic feature, a waterfall on Columbia River Gorge that plunges 176 ft.
Oxbow Park Campground Entrance
Campground
12.4 mi
4.2 (20)
FPV4+RPQ, Gresham, OR 97080
Public restroomPublic showerRestroomRunning water
Oxbow Regional Park
Park
12.7 mi
4.6 (1643)
3010 SE Oxbow Pkwy, Gresham, OR 97080
Old-growth woodland recreation area on the Sandy River with 12 miles of trails & campsites.
Barbecue grillGender-neutral restroomPicnic tablesPublic restroom
Lewis and Clark State Recreation Site
Campground
15 mi
4.5 (1657)
1 Jordan Rd, Troutdale, OR 97060
Popular 54-acre swim spot on the Sandy River with hiking, picnic areas, boat launch & fishing.
Barbecue grillCycling lanesPicnic tablesPublic restroom
Clackamas River Ranger Station
Government office
16.6 mi
4.4 (7)
16400 Champion Wy, Sandy, OR 97055
Restroom
Zigzag Ranger Station
Forestry office
18.2 mi
4.3 (57)
70220 US-26, Zigzag, OR 97049
Restroom
Frequently Asked Questions About Oneonta Falls
Is Lower Oneonta Gorge open for swimming?
The current manager-sourced alert says the gorge remains closed. Do not enter the old wading route or bypass barriers.
Did the July 2026 date on an older order mean it reopened?
No. An expired document is not a reopening notice. Current alert guidance still identifies the lower gorge closure.
Does Upper Oneonta's Google operating status apply here?
No. Upper Oneonta Falls is a different destination. Its saved operating flag does not establish lower-gorge access or swimming permission.
Can I reach the falls through the tunnel or a nearby trail?
An open neighboring feature does not authorize entry into the closed gorge. Do not follow old creek steps, climb the logjam or seek a way around barriers.
Why is there no photo gallery?
The saved collection mixes distinct destinations and a visitor portrait. Those images have not been approved as an accurate Lower Oneonta gallery.
Highlights
Lower and Upper Oneonta destination distinction
Current closure guidance
Correction of obsolete creek-route advice
Location & Area Map
Safety Information
Important Safety Tips
- Respect closure barriers
- Fire-damaged slopes, rockfall, erosion and logjams are not hazards solved by water shoes or visiting at low flow
- Do not climb obstacles, jump, dive or attempt to bypass restrictions
Cultural & Historical Context
Historical Background
The Historic Highway and tunnel belong to the area's transport history, not a workaround for lower-gorge access restrictions. Nearby landmarks must not be presented as an approved swimming approach.
Photography Guide
Photo Opportunities
No gallery published from the mixed Upper Oneonta collection. Historical canyon or waterfall photos do not establish current legal access, and nearby tunnel scenery is not the swimming destination.
Conservation & Ethics
Protect This Place
Stay out of closed restoration and hazard areas. Do not cross barriers, create informal paths or treat photographs of visitors as permission to enter.
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At a Glance
Best Time to Visit
Do not plan a lower-gorge swim. Select a separate authorized outing after checking its current notices.
Difficulty Level
Closed route, not a moderate swimming hike. Do not use the old difficulty rating to justify entry or logjam climbing.
Fee
No admission price makes the closed gorge available. Check separate parking or permit terms for any other authorized outing.
Facilities
Do not transfer toilets, campground services or parking permission from Ainsworth State Park to the closed gorge. Any neighboring facility is a separate destination with its own rules.
Activities
Closure and destination research only for this lower-gorge listing; no swimming, wading or logjam-route recommendation.
Phone
Current site-specific staffed phone not confirmed; consult the Forest Service's Columbia River Gorge alerts and contact information.
Safety & Access Notice
This information is for general planning only and may be incomplete, outdated, or inaccurate. Access rules, closures, water levels, currents, hazards, and legal restrictions can change at any time. Always verify current rules with the land manager or official source before visiting.
You are responsible for your own safety and for following all posted signs, laws, and local regulations. Read the full disclaimer.
Camping Information
No camping visit recommended in the closed gorge. Arrange an authorized campground separately and do not assume that booking it grants gorge access.
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Safety & Access Notice
This information is for general planning only and may be incomplete, outdated, or inaccurate. Access rules, closures, water levels, currents, hazards, and legal restrictions can change at any time. Always verify current rules with the land manager or official source before visiting.
- Do not swim where swimming is prohibited, unsafe, or not clearly allowed.
- Follow posted signs, local regulations, closures, and private-property boundaries.
- Assess conditions on site. Water flow, depth, temperature, and underwater hazards change quickly.
- Never jump or dive without personally confirming depth and underwater obstacles.
- Swim with a buddy and consider flotation for weak or non-swimmers.
- Pack out all trash; respect wildlife and fragile environments.
You are responsible for your own safety and for following all posted signs, laws, and local regulations. Read the full disclaimer.
J
Joshua Havens
Founder & Editor, Hidden Swimming Holes
Joshua Havens created Hidden Swimming Holes to make it easier for people to find — and safely visit — natural freshwater swimming destinations across the United States. He researches access conditions, water quality resources, and land management rules so you don't have to start from scratch. He holds a strong belief that good outdoor recreation information should be accurate, honest about its limitations, and freely available.
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