Colorado Fly Fishing
Where the data
meets the drift.
Live USGS stream conditions, an AI hatch advisor loaded with real gauge data, and beginner-friendly guides — all in one place.
Live Conditions
Updated every 15 min
Why this site
Built for anglers who want the data
Live Stream Data
Real-time CFS, gauge height, and water temperature from USGS sensors on every river. Know before you go.
Updated every 15 minutes
AI Hatch Advisor
Ask what to throw and get a specific answer — fly pattern, hook size, and timing — based on today's actual conditions.
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Built for Beginners
No gatekeeping. No bro energy. Clear explanations of what the data means and what to do with it.
Colorado rivers only, for now
🟢 Fishing Well Today
Arkansas River — Pueblo Tailwater
Don't sleep on the lower Arkansas. The 8-mile tailwater below Pueblo Reservoir is one of Colorado's most accessible year-round trout fisheries — regulated flows, trophy-class rainbows in the first 4 miles below the dam, and a legitimate Mother's Day caddis hatch that draws anglers statewide every April. Multiple city parks and the Pueblo Riverwalk mean you can park and be in the water in 5 minutes. Tailwater fish are selective, though — they've seen every pattern.
Know what's hatching
Colorado Hatch Calendar
Month-by-month hatch charts for Colorado trout rivers. Blue-Winged Olives, PMDs, Caddis, Green Drakes — with matching fly patterns and hook sizes.
View Hatch Calendar →