Cherry Creek below Valley Dam near Hetch Hetchy
Cherry Creek · Sierra / West · USGS gage 11277300
Coldwater (summer mean 10.8°C — prime coldwater).
Water
50°F
Flow
21 cfs
Air
68°F
Sky
0%
Pressure
29.84 in
Wind
6 mph
Predicted hatches · 2026-07-31
PredictedMidgeChironomidae0.50
Predicted by conditions; no reports yet. water 9.9°C (50°F) sits in 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.