What flies are hatching on the Clark Fork River right now?

Current and seasonal hatches on the Clark Fork River include Caddis. Use the AI Hatch Advisor on this page for a live, temperature-aware recommendation.

What's the current flow on the Clark Fork River?

The Clark Fork River is running at 850 CFS at the Above Missoula gauge. Readings update every 15 minutes from the USGS Water Services API.

Is the Clark Fork River fishable today?

Clark Fork River is outside its fishable window right now. Flow is 850 CFS at the Above Missoula gauge. Check back when conditions return to the normal range.

Clark Fork River Fly Fishing Conditions

Live Conditions

Clark Fork River — Above Missoula

Unfishable

850CFS

Discharge

2.43ft

Gauge Height

65.5°F

Water Temp

Updated 47 min agoView on USGS ↗

7-Day Flow

↓ Falling

RisingFallingStable

24-Hr Pressure

26.86 inHg · → High/stable

Falling (good)RisingHigh/stable

Voluntary Catch-and-Release Advisory

Water temperature is at or above 65°F. At these temperatures trout are physiologically stressed and have a higher post-release mortality rate. Consider waiting for cooler conditions — early morning or evening — or choosing a tailwater with regulated temperatures.

Local Weather

72°FClear sky

Wind 6 mph26.86 inHg Low & stable

Tough conditions — fish deep

Today

☀️

Clear sky

79° / 58°

Tomorrow

☀️

Clear sky

75° / 51°

Tue

☀️

Clear sky

81° / 56°

Wed

☀️

Clear sky

91° / 60°

Cold front incoming — go deep with nymphs, surface activity likely slow.

Weather by Open-Meteo · No API key · Updated every 30 min

What should I fish today?

⚡ AI

AI-powered recommendation using today's live flow, temperature, and hatch data.

2

Time of Day

Using: 850 CFS · 65.5°F · PMDs continue. Hopper season peak

What should I pack?

Rod, flies, tippet, and safety gear specific to today's Clark Fork River conditions.

🪰 Hatch Calendar

Clark Fork River · August · Late Summer

Full calendar →

🟢 Active now at 65.5°F water

Caddis

🟡 Approaching — within 5°F of trigger range

Pale Morning Dun

Select month

JanDec

PMDs continue. Hopper season peak (size 8-12). Caddis evenings. Hoot-owl restrictions common on lower Clark Fork in hot afternoons. Cool mornings, hot afternoons, dusk hatches.

PMDCaddis

🟢 Active · 🟡 Approaching · ⚪ Seasonal only

River Map

Loading map…

USGS Gauge (click for site ID)Fishing Access / SectionScroll to zoom disabled — use map controls

About Clark Fork River

Big-water freestone draining western Montana — the Clark Fork picks up the Bitterroot, Blackfoot, and Rock Creek before pushing north to the Idaho line. Wild trout fishery recovering from a century of mining damage, now one of MT's best.

SkwalaSalmonflyGolden StoneCaddisPale Morning DunHopperBlue-Winged Olive

Regulations

Bull trout federally protected — release immediately and unharmed; do not target them. Standard Montana fishing license required.

Learn More

Guides to help you fish Clark Fork River with more confidence.