06/30/2023: Spent the holiday weekend at Fish Lake Campground. Two of us stayed for 4 nights and didn't have any neighbors. Site is located about 11 miles past Salmon La Sac Campground on Forest Road 4330. All gravel and you will need to cross some water.
There were mosquitos during our stay, however, not a crazy amount. These are walk in sites so you will need to haul your stuff to your site. There are 5 well spaced sites with rings and picnic tables. A couple sites have prep tables as well. One vault toilet.