OWSR No. 36: Imnaha River

The Imnaha River

The Imnaha River in Hells Canyon National Recreation Area | Photo: Zachary Collier

Quick Facts

  • Managing Agency: Wallowa-Whitman National Forest (USFS)
  • Designated Stretch: From the headwaters of the South Fork of the Imnaha to it's confluence with the Snake River
  • Designation Length: 77 miles (15 miles Wild, 4 miles Scenic, 58 mile Recreational)
  • Outstanding Remarkable Values: Scenic, Recreation, Fisheries, Wildlife, Historic/Prehistoric, an Traditional Value/Lifestyle Adaptation
  • Wild and Scenic River Designation: October 28, 1988

More Information

Celebrated by Zach Collier and Paul Clark by paddling from Cow Creek to the Snake River on March 29, 2018.


Cowboys along the Imnaha RiverZach Collier: My friend Paul joined me on an interesting adventure in this remote corner of Oregon. Travelling to our put in at the Cow Creek Bridge was one of the most interesting parts of the trip. The Imnaha Valley was full of ranching and evidence of a cowboy culture not found much anywhere. Just upstream of our put-in we saw cowboys castrating and branding bulls. After a long trip to put-in we launched our boats and paddled for a couple hours down to the Snake River where we spent the night and explored a small part of Hells Canyon. The next morning we packed up our gear and hiked back up the trail next to the Imnaha River back to our truck. The river was quite beautiful and fun but we also enjoyed getting to know the Imnaha Valley on our way to and from our river adventure.

Learn about Oregon Wild and Scenic River No. 37: The Snake River >>


Northwest Rafting Company Exploratory Division