Silver Bow Creek At Montana Street, At Butte
Silver Bow Creek · Rockies · USGS gage 12323242
Coldwater (summer mean 15.5°C — prime coldwater).
Water
53°F
Flow
12 cfs
Air
44°F
Sky
0%
Pressure
30.08 in
Wind
2 mph
Predicted hatches · 2026-08-04
PredictedMidgeChironomidae0.36
Predicted by conditions; no reports yet. water 11.7°C (53°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.