Clark Fork River
Montana · Western Montana
Brown TroutRainbow TroutBrook Trout
Top 5 Fishing Locations on Clark Fork River
Missoula City Reach
The Clark Fork through Missoula offers surprisingly excellent trout fishing in an urban environment with brown and rainbow trout throughout. Easy access from multiple city parks makes this a convenient option for visiting anglers. Evening caddis hatches from May through July are reliable and productive.
💧 Ideal flow: 3,000–8,000 CFS. The Missoula section fishes best at moderate flows — a big river that holds fish throughout its large pools and runs.
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Milltown Restoration Area
Following the historic Milltown Dam removal the Clark Fork in this area has undergone remarkable ecological recovery with improving trout populations. Brown and bull trout are both present as the ecosystem heals. This restoration success story is ongoing and fishing improves each season.
💧 Ideal flow: 2,500–7,000 CFS. The Alberton Gorge section is remote and powerful — only safely waded at lower flows.
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Rock Creek Confluence
Where legendary Rock Creek joins the Clark Fork creates one of Montana's best fishing confluences. Brown trout up to 24 inches use the mixing zone for feeding and temperature refuge. This is arguably the single best access point on the entire Clark Fork system.
💧 Ideal flow: 2,000–6,000 CFS. The upper Clark Fork fishes best at moderate stable flows after spring runoff subsides.
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Drummond Section
The Clark Fork near Drummond flows through wide ranchlands with excellent wade fishing for brown trout in a classic Montana setting. Less pressure than the Missoula corridor makes fish more approachable. Fall streamer fishing here is exceptional for large brown trout.
💧 Ideal flow: 2,500–7,000 CFS. October caddis hatch near Missoula is best at moderate flows in September and October.
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St. Regis Area
The lower Clark Fork approaching the Idaho border near St. Regis is a massive river holding large brown and bull trout. Float fishing in drift boats covers this broad water effectively. Streamer fishing in fall produces the largest fish on the system.
💧 Ideal flow: Fishes best at low to moderate stable flows — check the gauge at Missoula before heading out as this is a large variable river.
📊 Get Location Flow Report
About Clark Fork River Fishing
The Clark Fork River is Montana's largest river by volume as it flows through Missoula toward Idaho, commanding respect for both its size and its remarkable ecological recovery from a century of hard-rock mining contamination. This powerful tailwater has transformed into a world-class trout fishery that serves as a conservation flagship, attracting anglers who appreciate fishing on water that's actively healing while supporting robust populations of wild trout.
Best Time to Fish Clark Fork River
October brings the Clark Fork's most celebrated hatch—the October caddis—when massive golden stoneflies emerge and trigger aggressive surface feeding across the entire system. Fall through early winter is prime season on this river, as cooling water temperatures activate trout and concentrate them in predictable feeding lanes before spring snowmelt changes the character of the flow.
Species
Brown trout dominate the Clark Fork's middle sections and respond enthusiastically to large attractor patterns during caddis season, while rainbows throughout the system prefer faster currents and are particularly aggressive during low-light periods. Bull trout, the river's most conservation-sensitive resident, require special attention and careful handling, making the Clark Fork a meaningful destination for anglers committed to protecting this threatened native species while pursuing quality fishing.
Access & Regulations
Always check the current Montana fishing regulations before heading out. Regulations on Clark Fork River may include special catch-and-release sections, artificial-only stretches, and seasonal closures. A valid Montana fishing license is required.
Live River Data
Live streamflow data for this river is sourced directly from the USGS National Water Information System, updated every 15–60 minutes. CFS and gauge height readings reflect current conditions so you can plan your trip with confidence.