Montana is the promised land of American trout fishing, and our three rivers cover its range: the Madison's fifty-mile riffle, the Bighorn's 5,000-trout-per-mile tailwater, and the Gallatin's walk-and-wade canyon. Flows, hatches and honest daily windows: that is the whole game here.
Reports current for Friday, October 23
Every one of the 26 Montana waters we cover has a live read this morning. None reaches 4 out of 5 and 5 are slow. Water runs 47 F to 62 F. Pressure is holding steady on most of them, so the day comes down to water temperature and wind. 22 have a better-than-even chance of rain.
Best right now: Beaverhead River 3/5, Big Hole River 3/5, Bighorn Lake 3/5
Live verdicts from this morning's reports.
Montana's Fifty-Mile Riffle: the most fished, most loved trout river in the state, and still worth every cast.
The tailwater that never has a bad year: 5,000 trout per mile in the first thirteen miles below Yellowtail Dam.
The wade-fisher's river: 90 canyon-and-meadow miles from Yellowstone to Three Forks, no boats allowed on the best of it.
Fort Peck Lake: the first dam on the upper Missouri, with 1,500 miles of shoreline and special Montana rules for walleye, sauger, Chinook and lake trout.
The West's largest natural lake: lake trout depths and postcard water.
Missoula's wilderness-grade trout stream: 50 miles of pocket water and a famous stonefly riot.
The Bitterroot: a north-flowing valley river from its East and West forks to the Clark Fork at Missoula, with FWP access sites from Darby to Florence.
The high mountain flat: rainbows, brookies and a legendary ice season at 6,400 feet.
Canyon Ferry Reservoir near Helena: 33,500 acres where FWP limits walleye to 10 a day and brown trout go back.
The Clark Fork at Missoula: a free-flowing trout river below the site of the former Milltown Dam, with FWP access sites in and around town.
The longest undammed river in the lower 48: 692 free miles of cutthroat, browns and rainbows flowing out of the park through Paradise Valley.
The river that ran through it: Norman Maclean's home water, restored to wild-trout health, floating brown-and-cutthroat canyons northeast of Missoula.
The Absaroka jewel: a boulder-strewn freestone falling out of the wilderness to the Yellowstone, thick with wild browns and rainbows.
Fresno Reservoir: a 1939 Reclamation lake on the Milk River west of Havre that FWP manages as a walleye fishery, stocked every year.
Montana's big-brown conveyor: a brushy tailwater ribbon below Clark Canyon where 20-inch fish are the average, not the story.
The Craig section: Montana's trout interstate, where 5,000 fish per mile sip tricos below Holter Dam and drift boats run like commuter rail.
The last river of the grayling: Montana's undammed freestone jewel, salmonfly June and the Wise River braids running wild since forever.
The forgotten fork: brown-trout water the crowds drive past, where the Big Hole and Beaverhead marry and float traffic disappears.
The canyon behind the famous tailwater: 70 miles of Bighorn Canyon walls hiding walleye, ling and the West's most dramatic ice fishing.
The Madison's shallow reservoir: Ennis Lake's 3,692 acres hold wild rainbows and browns above Bear Trap Canyon.
Holter Reservoir: a 3,667-acre Missouri River lake near Wolf Creek, a year-round rainbow trout, walleye and yellow perch fishery and the source of Montana's record walleye.
The Flathead main stem below the North and Middle forks: open all year, catch-and-release for westslope cutthroat and closed to bull trout fishing.
A NorthWestern Energy reservoir on the Madison River near West Yellowstone, with brown, rainbow and westslope cutthroat trout and Arctic grayling planted by FWP in 2022 and 2023.
A Bureau of Reclamation reservoir about 11 miles south of Dillon that Montana FWP stocks with rainbow trout every summer, at the head of the Beaverhead River.
Noxon Rapids Reservoir: a 7,592-acre reservoir on the lower Clark Fork in Sanders County, behind Avista's Noxon Rapids Dam.
The 54 miles of the Kootenai below Libby Dam, where FWP manages wild rainbow trout under a 28-inch minimum at the dam and bull trout must go back.
Species activity across the state's covered waters. Peak of the year: May.
1 = slow, 5 = peak. Current month highlighted.
Seasonal surface curve for this state's dominant water type (estimated).
Montana's fishing wealth is simple: cold, clean rivers at every scale, from the Madison's fifty-mile riffle to spring creeks you can step across. The state manages almost everything for wild fish: no stocking in rivers since the 1970s, which is why a 16-inch Madison brown fights like it was never told it is average. Public access is the other half of the treasure: Montana's stream-access law puts every river below the high-water mark in public hands.
The year has a rhythm: pre-runoff fishing March-April (baetis, skwalas), the May-June melt (fish the tailwaters: the Bighorn shines while freestones blow out), the salmonfly circus in late June, hopper summer through August, streamer-and-baetis fall, and quiet winter midging for those with warm gloves. Afternoon wind is a fact of life: plan casts with it, not against it.
Roughly mid-May to late June on freestones (Madison, Gallatin): rivers run high and brown. The Bighorn, as a tailwater, fishes right through it: that is its superpower.
Salmonflies in late June on the Madison, hoppers everywhere in August, and baetis on cloudy fall afternoons. Time a trip to one and you will understand the fuss.