There are multiple sites throughout the park. All have water, tables and BBQ's or pits. Each one also has a playground for the kiddies. I prefer the camps along the river, the fly fishing in the tail waters of Boysen Reservoir is spectacular! There are more trees and there are launch sites. We wade fished, but if you float you need a permit to float through Wind River Indian Reservation.
The lake is huge and has excellent fishing I'm told. Sites are self pay and I've included a photo of the pricing. Enjoy!