What flies are hatching on the Yellowstone River right now?

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

What's the current flow on the Yellowstone River?

The Yellowstone River is running at 1,640 CFS at the At Corwin Springs gauge. Readings update every 15 minutes from the USGS Water Services API.

Is the Yellowstone River fishable today?

Yes — Yellowstone River is rated fishable right now. Current flow is 1,640 CFS at the At Corwin Springs gauge.

Yellowstone River Fly Fishing Conditions

Live Conditions

Yellowstone River — At Corwin Springs

Fishable

1,640CFS

Discharge

-0.05ft

Gauge Height

—

Water Temp

Updated 44 min agoView on USGS ↗

7-Day Flow

→ Stable

RisingFallingStable

24-Hr Pressure

25.48 inHg · → High/stable

Falling (good)RisingHigh/stable

Local Weather

39°FOvercast

Wind 8 mph25.48 inHg Low & stable

Tough conditions — fish deep

Today

🌦️

Drizzle

46° / 37°

0.11"

Tomorrow

☁️

Overcast

48° / 35°

Tue

☁️

Overcast

56° / 35°

Wed

☁️

Overcast

52° / 37°

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.

9

Time of Day

Using: 1,640 CFS · Midges. BWOs on mild afternoons. Brown trout spawn — streamer fishing peak. RESPECT REDDS. Sections beginning to ice.

What should I pack?

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

🪰 Hatch Calendar

Yellowstone River · November · Late Fall

Full calendar →

Showing typical dates — water temperature data unavailable for live hatch predictions.

Select month

JanDec

Midges. BWOs on mild afternoons. Brown trout spawn — streamer fishing peak. RESPECT REDDS. Sections beginning to ice.

Blue-Winged OliveMidgeStreamer

River Map

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

About Yellowstone River

Longest free-flowing river in the lower 48 — undammed from Yellowstone Park through Paradise Valley to the plains. Wild Yellowstone Cutthroat, browns, and rainbows in classic riffle-pool freestone water.

SalmonflyGolden StoneCaddisPale Morning DunHopperBlue-Winged OliveMidge

Regulations

Standard Montana trout regulations apply on the Yellowstone; native Yellowstone Cutthroat are the species of concern, and catch-and-release is strongly encouraged for wild cutthroat. Montana fishing license required. Verify current regs at fwp.mt.gov before fishing.

Learn More

Guides to help you fish Yellowstone River with more confidence.