Wind River Range
Alpine Canyon is 8 miles of classic class III whitewater on the Snake River near Jackson, WY. It's awesome for kayaking, rafting, stand up paddle boarding, and surfing waves like Lunch Counter and Big Kahuna.
Surfing Lunch Counter Rapid.
The river level in this video is around 9,000 cfs on the Snake River at Alpine gauge.
Combine that with a backpacking trip to the Cirque of the Towers in the Winds for a perfect summer road trip. The closest access is the Big Sandy Trailhead south of Pinedale, WY. An 8 mile hike to the top of 10,800 ft. Jackass Pass will get you a million dollar view of the Cirque.
If you time it right and it's a good water year, it's possible surf Lunch Counter Rapid and hit the wildflowers at their peak in the Winds in the same week. Mid-July to early August is your best bet. Just be sure to bring your sunscreen and bug spray.
Kate Jacob and I celebrating on Jackass Pass
Camping in the Cirque
V Lake near the Big Sandy Trailhead