Silver Bow Creek At Montana Street, At Butte
Silver Bow Creek · Rockies · USGS gage 12323242
Coldwater (summer mean 15.5°C — prime coldwater).
Water
42°F
Flow
9 cfs
Air
36°F
Sky
36%
Pressure
30.21 in
Wind
7 mph
Predicted hatches · 2026-11-02
PredictedMidgeChironomidae0.48
Predicted by conditions; no reports yet. water 5.8°C (42°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
PredictedBlue-Winged OliveBaetis spp.0.43
Predicted by conditions; no reports yet. water 5.8°C (42°F) is warming toward the prime band (6-11°C); shoulder of the season; 8 days sustained ≥4°C; watch midday, especially overcast afternoons.
flies: BWO Sparkle Dun #18-22, RS2, Pheasant Tail #18
PREDICTED from the first-principles model only. Report-confirmed signal (fly-shop & forum reports) is the next milestone.