We stayed at site 40 at McCormack Campground of Lake Owyhee State Park. We called a few hours I heard and were told that there were several walk up so it’s available. When we arrived this has not changed. The drive up to the park is very scenic with lots of spots for flyfishing. The campground and the facilities ade clean and the views are beautiful. There is currently fire pit and grill ban but propane and butane cooktops are allowed. The water level it was long but still plenty for a swim. There were several fishing water skiing boats on the lake. Would have gladly stayed a couple more days. The only complaint was that the occupants of trailer sites above had their porch/string/rope lights on still at midnight taking away from the beauty of the night sky.