Fly Fish ForecastBeta

Hatch predictions for 300+ US rivers — built from live water & weather, then confirmed against real fly-shop reports.

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Roaring Fork River Near Emma

Roaring Fork River · Rockies · USGS gage 09081000

Coldwater (summer mean 12.7°C — prime coldwater).

Water
n/a
Flow
n/a
Air
76°F
Sky
83%
Pressure
29.80 in
Wind
4 mph
Predicted hatches · 2026-07-31

No bugs scoring above the noise floor right now.

PREDICTED from the first-principles model only. Report-confirmed signal (fly-shop & forum reports) is the next milestone.