What flies are hatching on the Blackfoot River right now?

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

What's the current flow on the Blackfoot River?

The Blackfoot River is running at 1,480 CFS at the Near Bonner gauge. Readings update every 15 minutes from the USGS Water Services API.

Is the Blackfoot River fishable today?

Blackfoot River is rated marginal right now. Flow is 1,480 CFS at the Near Bonner gauge. Go in prepared — heavier tippet, cautious wading, or target edges and seams.

Blackfoot River Fly Fishing Conditions

Live Conditions

Blackfoot River — Near Bonner

Marginal

1,480CFS

Discharge

2.66ft

Gauge Height

66.9°F

Water Temp

Updated 17 min agoView on USGS ↗

7-Day Flow

↓ Falling

RisingFallingStable

24-Hr Pressure

25.85 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

68°FClear sky

Wind 1 mph25.85 inHg Low & stable

Tough conditions — fish deep

Today

☀️

Clear sky

73° / 53°

Tomorrow

☁️

Overcast

70° / 50°

Tue

☀️

Clear sky

75° / 50°

Wed

☀️

Clear sky

86° / 54°

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.

4

Time of Day

Using: 1,480 CFS · 66.9°F · PMDs continue. Hopper season peak

What should I pack?

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

🪰 Hatch Calendar

Blackfoot River · August · Late Summer

Full calendar →

🟢 Active now at 66.9°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 possible on hot afternoons. Native Bull Trout post-spawn — leave them alone, federally protected.

PMDCaddis

🟢 Active · 🟡 Approaching · ⚪ Seasonal only

River Map

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

About Blackfoot River

The "river that runs through it" — Norman Maclean's home water. Classic boulder-and-pool freestone flowing from the Continental Divide near Lincoln to its confluence with the Clark Fork. Native Westslope Cutthroat, Bull Trout, browns, and rainbows.

SalmonflyGolden StoneCaddisPale Morning DunHopperBlue-Winged Olive

Regulations

Bull trout federally protected — release immediately. Native Westslope Cutthroat catch-and-release in many stretches. Check current FWP regulations.

Learn More

Guides to help you fish Blackfoot River with more confidence.