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Threemile Canyon Park
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About This Ramp
Type
Trailered Boat Launch
Managed by
U.S. Army Corps of Engineers
Lanes
1
Parking
Yes
Amenities
Restroom
Contact
Oregon Marine Board2 data sourcesUpdated Mar 2026
Threemile Canyon Park is a public boat ramp on Columbia River (Lake Umatilla) in Morrow County, Oregon (97818). Managed by U.S. Army Corps of Engineers. GPS coordinates: 45.8115°N, 119.9697°W.