Clark Fork River

September 27, 2026

By Barbless, compiled each morning from the gauges, forecasts and sources on this page.

Clark Fork River

Current conditions for Clark Fork River · Map, access and gauges

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Flow

9,380 cfs

Trend

Steady

Observed

21d ago

Hatch Status

Mahogany Duns present in fall

Conditions

Good fishing is found near St. Regis, where fish are settling into slower, fall-type water. They remain responsive to hoppers and low-profile patterns like Chernobyl bugs. As of September 27, flows were running at 9,380 cfs and stable. Mahogany Duns, BWOs, and October Caddis are on the water alongside Hecuba mayflies.

Gauges

Techniques

  • Purple haze parachute or brindle chute behind low-profile foam bug worked
  • Fish looking for hoppers and low-profile chernobyl patterns
  • Jig pheasant tail droppers good at times

Recommended flies

Hopper patternsLow-profile ChernobylPurple haze parachuteBrindle chuteJig pheasant tail