This was perfect. I got a spot right on the bank of the Snake River. It has all the basics.. a picnic table, fire ring, most sites also have bear boxes for food storage; there are vault toilets, firewood for sale, and potable water available.
$20/ night for sites, $40 for some sites that are double tables/parking.
I didn’t have any neighbors, and I would guess maybe only a quarter of the sites were occupied. In the evening it did get a little annoying with lots of moth‘s flying everywhere. They seem to like to land on my white truck and I had to cover my food while I cooked, and kept the tent closed. Not a big deal, but they were noticeable.
While not this campground per se I thought it’s worth mentioning that just across the river there are also a large number of free dispersed campsites, some right on the river, some along the road as you travel away from the river. To get to the bridge you still take the Riverside Campground exit off the highway below the damn. Pass the campground cross the bridge and you’ll see them on your right for about a mile. I didn’t stay there. It looks like they have firings and nothing else but they’re free and plentiful.