Your best and only supply store
Green River Outfitters and Trout Creek Flies is THE place for fly fishing, fishing and rafting trips, guides, rentals and supplies. Located conveniently in the very small town of Dutch John. They have a sandwich counter and food store. There are also showers available for those coming off the river or out of the mountains after a long trip. I don't fish so I don't know if they have everything, but it sure looked that way to me. If you need it to fish you have it here: Rods, reels, lines, flies, bait, licenses, hats, boots, pants, waders, boats, guides, etc.