What flies are hatching on the Colorado River right now?

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

What's the current flow on the Colorado River?

The Colorado River is running at 607 CFS at the Kremmling gauge. Readings update every 15 minutes from the USGS Water Services API.

Is the Colorado River fishable today?

Colorado River is rated marginal right now. Flow is 607 CFS at the Kremmling gauge. Go in prepared — heavier tippet, cautious wading, or target edges and seams.

Colorado River Fly Fishing Conditions

Live Conditions

Colorado River — Kremmling

Marginal

607CFS

Discharge

4.53ft

Gauge Height

66.6°F

Water Temp

Updated 1 hr agoView on USGS ↗

7-Day Flow

→ Stable

RisingFallingStable

24-Hr Pressure

23.17 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

73°FPartly cloudy

Wind 14 mph23.17 inHg Low & stable

Tough conditions — fish deep

Today

🌦️

Drizzle

71° / 44°

Tomorrow

🌫️

Foggy

73° / 48°

Wed

☁️

Overcast

77° / 47°

Thu

☁️

Overcast

79° / 49°

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: 607 CFS · 66.6°F · Green Drakes tapering. BWOs returning on cloudy days

What should I pack?

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

🪰 Hatch Calendar

Colorado River · September · Early Fall

Full calendar →

🟢 Active now at 66.6°F water

Caddis

🟡 Approaching — within 5°F of trigger range

Pale Morning DunGreen Drake

Select month

JanDec

Green Drakes tapering. BWOs returning on cloudy days (size 18-20). PMDs possible. Fall streamer fishing for aggressive large trout.

Green DrakeBlue-Winged OlivePMDStreamer

🟢 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 Colorado River

Yes, THAT Colorado River. Big water, big fish near Kremmling. Float fishing opens up at higher flows — a different experience than the mountain rivers.

CaddisPale Morning DunGreen Drake

Learn More

Guides to help you fish Colorado River with more confidence.