Call the Green River WY Game and Fish Dept. Office at 307-875-3223 and ask to speak to the wildlife biologist for the area, and also the Game warden. The game warden who worked that area for many years recently retired, but others will be able to help you out. I was the Game warden west of there in Kemmerer in the '90's but didn't know the area you're talking about. There is a fair amount of BLM land if I remember correctly,but WGFD staff can help you out. I moved for a family reason,and still miss western Wyoming.