Snake River At Moose
Snake River · Rockies · USGS gage 13013650
Trout (marginal) (summer mean 16.3°C — trout, warm in summer; very large river (7,100 cfs)).
Water
57°F
Flow
3,500 cfs
Air
40°F
Sky
0%
Pressure
30.07 in
Wind
1 mph
Predicted hatches · 2026-09-15
PredictedSpotted / Summer CaddisHydropsyche spp.0.45
Predicted by conditions; no reports yet. water 13.8°C (57°F) is warming toward the prime band (14-19°C); shoulder of the season; 7 days sustained ≥12°C; watch evening, last hour of light.
flies: Elk Hair Caddis #14-16, Iris Caddis, X-Caddis
PredictedMidgeChironomidae0.18
water 13.8°C (57°F) is cooling past the prime band (1-10°C); shoulder of the season; 7 days sustained ≥0°C; watch midday, especially cold months.
flies: Zebra Midge #18-22, Griffith's Gnat, Disco Midge
PREDICTED from the first-principles model only. Report-confirmed signal (fly-shop & forum reports) is the next milestone.