Yellowstone River Fly Fishing Report
Current Yellowstone River Fishing Report
Updated 09/19/2026
Current Flow: ~ 1770 CFS at Livingston & 1540 CFS @ Corwin Springs
The Yellowstone has been fishing well as we move deeper into September, and the cooler nights have really helped get the river into that early fall rhythm. Clarity has generally been good, but with the rain we’ve had recently, it’s still worth keeping an eye on the river over the next couple of days. Any good storm in or around Yellowstone National Park can send some color down through the Lamar drainage and eventually into the main river. Outside of that, conditions have been good and the fish seem to be spreading out into a mix of riffles, deeper seams, banks, and some of that softer fall holding water.
Don’t put the terrestrial box away on the Yellowstone just yet either. Hopper fishing has actually picked back up some, and there are still some good fish willing to come up for a hopper, ant, beetle, or smaller attractor dry, especially once the day warms up. Blue-Winged Olives are starting to become more of a player as well, particularly when we get some clouds, and there are still a few caddis hanging around. A dry-dropper is a great way to cover water right now, but nymphing is probably still the most consistent option. Rubber Legs, Pheasant Tails, Prince Nymphs, Perdigons, Frenchies, and other smaller mayfly patterns are all good choices. Fishing a bigger Rubber Leg, Woolly Bugger, or sculpin up top with a smaller beadhead behind it can be a really productive way to cover some of the deeper runs.
Streamer fishing is really starting to become worth the commitment out there. The browns are beginning to move around more as we get closer to fall, and cloudy days have definitely been the better time to go looking for some of the bigger fish. Olive, black, olive-and-white, and natural baitfish colors have all been good, with sculpin patterns, Mini Dungeons, Sparkle Minnows, and smaller baitfish-style streamers getting attention. Don’t feel like you have to rip them as fast as you would during the summer either—slower strips, swings, and even dead-drifting a streamer through deeper water can be really effective as the water cools down. Overall, the Yellowstone is in a pretty fun place right now: you can still fish a hopper, nymph your way through the slower stretches, or spend the day throwing streamers and looking for one of those better fall browns.
Learn More About Fly Fishing the Yellowstone River
The Yellowstone River is one of the most iconic and productive trout fisheries in Montana. As the longest undammed river in the lower 48, the Yellowstone provides constantly changing conditions shaped by weather, flows, and seasonal runoff, creating a dynamic fishery that rewards anglers who adapt day to day.
Flowing through Paradise Valley near Livingston, the river supports healthy populations of wild rainbow trout, brown trout, and native Yellowstone cutthroat trout. From large riffles and deep runs to side channels and cutbanks, the Yellowstone offers diverse water types that fish well with a variety of techniques—from nymphing and dry flies to streamer fishing.
Where to Fish the Yellowstone River
The most productive stretches of the Yellowstone River run from Gardiner through Paradise Valley and down past Livingston. Sections like Yankee Jim Canyon offer rugged, technical water with strong fish, while the valley stretches provide broader runs, gravel bars, and classic bank structure that hold trout throughout the season. As you move downstream, the river transitions from higher numbers of cutthroat trout to a mix of larger rainbow and brown trout, offering different opportunities depending on where and when you fish.
👉 Explore Our Complete Yellowstone River Fly Fishing Guide
Book a Guided Fly Fishing Trip on the Yellowstone River
A guided fly fishing trip on the Yellowstone River is the best way to approach this large, ever-changing fishery with confidence. Due to its size and constantly shifting conditions, understanding when and where to fish is key to success—something that comes from time on the water and daily observation.
Our Bozeman fly fishing guides closely monitor flows, clarity, and weather patterns to put you in the best position for success. Whether you’re floating miles of productive water, targeting key hatch windows, or learning how to break down big freestone rivers, we tailor every trip to your experience level and goals.
When conditions line up, the Yellowstone delivers some of the most exciting and rewarding fly fishing in Montana.