Hells Canyon Reservoir runs from Copperfield Oregon up north along the Snake River/Hells Canyon all the way up to the dam. It's a long, fairly narrow reservoir that sits in a steep, picturesque canyon. You can access it from both the Oregon and Idaho sides, with numerous areas for camping and boat launch on both sides.
This river reservoir is nestled in a hot, dry climate and offers an emerald-hued escape from the oppressive heat. We visited on a day that crested well over 100 heatwave) and, well, that's pretty much perfect for enjoying the cool water. There are a ton of trailheads along the reservoir if you want to hike up to the canyon rim, and definitely tons of lakefront to stretch out on. Aside from the established campgrounds there are a bunch of pullouts on Hells Canyon Road suitable for car camping.
This is definitely a locals spot, and not really a destination. I think Wallowa Lake is more for the Portland tourists. But that said, it's easy to see how this is a really popular spot for party boats, water skiing, and simple lake-style recreation. read more