Beaverhead River At Twin Bridges
Beaverhead River · Rockies · USGS gage 06023100
Trout (marginal) (summer mean 19.1°C — trout, warm in summer).
Water
43°F
Flow
542 cfs
Air
35°F
Sky
9%
Pressure
29.93 in
Wind
12 mph
Predicted hatches · 2026-10-30
PredictedBlue-Winged OliveBaetis spp.1.00
Predicted by conditions; no reports yet. water 6.3°C (43°F) sits in the prime band (6-11°C); peak season; 8 days sustained ≥4°C; watch midday, especially overcast afternoons.
flies: BWO Sparkle Dun #18-22, RS2, Pheasant Tail #18
PredictedMidgeChironomidae0.50
Predicted by conditions; no reports yet. water 6.3°C (43°F) sits in 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.