Northeast of La Grande near Minam, the Imnaha River runs about 75 miles from the headwaters in the Eagle Cap Wilderness Area northward down to the Snake River confluence north of Hells Canyon. The Imnaha River is a designated Wild and Scenic River. It is known for its rainbow trout, steelhead and of course, its spring time Chinook run. Keep in mind that fishing for chinook on the Imnaha River is prohibited. Also, there is a limited season for steelhead, so make sure to check current season dates prior to arriving.
Overall, Imnaha River is the 5th most popular fly fishing river of all 22 fly fishing spots in Oregon.