What flies are hatching on the Ruby River right now?

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

What's the current flow on the Ruby River?

The Ruby River is running at currently unavailable — check the USGS gauge at Near Twin Bridges for the latest reading. Readings update every 15 minutes from the USGS Water Services API.

Is the Ruby River fishable today?

Live conditions for Ruby River are unavailable right now. Check the embedded gauge widget on this page for the latest data.

Ruby River Fly Fishing Conditions

Live Conditions

Ruby River — Near Twin Bridges

No Data

—CFS

Discharge

—ft

Gauge Height

—

Water Temp

Updated 33 min agoView on USGS ↗

7-Day Flow

→ Stable

RisingFallingStable

24-Hr Pressure

23.41 inHg · → High/stable

Falling (good)RisingHigh/stable

Local Weather

41°FOvercast

Wind 2 mph23.41 inHg Low & stable

Tough conditions — fish deep

Today

🌦️

Drizzle

42° / 35°

0.01"

Tomorrow

🌦️

Drizzle

41° / 32°

0.07"

Mon

☁️

Overcast

40° / 27°

Tue

☁️

Overcast

45° / 30°

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.

Time of Day

Using: Midges. BWOs on mild afternoons. Brown trout spawn — RESPECT REDDS. Sections beginning to ice.

What should I pack?

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

🪰 Hatch Calendar

Ruby 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 — RESPECT REDDS. Sections beginning to ice.

Blue-Winged OliveMidge

River Map

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

About Ruby River

Small meadow tailwater below Ruby Reservoir flowing north to the Beaverhead at Twin Bridges. Technical brown trout fishing in low, clear water — public access has been a long-running issue, so know the bridge-access rules before you go.

CaddisPale Morning DunHopperBlue-Winged OliveTricoMidge

Regulations

Public access on the Ruby is contentious — Montana stream access law allows fishing below the high-water mark, but landowner conflicts at bridge crossings are ongoing. Use established FWP fishing access sites and stay below the high-water mark.

Learn More

Guides to help you fish Ruby River with more confidence.