Calaveras Creek near Sunol
Calaveras Creek · Sierra / West · USGS gage 11173500
Coldwater (summer mean 15.4°C — prime coldwater).
Water
56°F
Flow
7 cfs
Air
56°F
Sky
23%
Pressure
29.89 in
Wind
5 mph
Predicted hatches · 2026-10-30
PredictedMidgeChironomidae0.20
water 13.6°C (56°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.