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

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Snake River near Buhl

Snake River · Rockies · USGS gage 13094000

Trout (marginal) (summer mean 19.9°C — trout, warm in summer).

Water
60°F
Flow
1,530 cfs
Air
46°F
Sky
100%
Pressure
29.81 in
Wind
5 mph
Predicted hatches · 2026-10-30

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.