Madison River near Norris
Madison River · Montana · USGS gage 06041500
Lower Madison below Beartrap Canyon near Norris. Warmest Madison reach; watch summer temps.
Water
57°F
Flow
1,160 cfs
Air
47°F
Sky
0%
Pressure
30.13 in
Wind
5 mph
Predicted hatches · 2026-09-15
PredictedSpotted / Summer CaddisHydropsyche spp.0.43
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; 8 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; 8 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.