Alameda Creek below Calaveras Creek near Sunol
Alameda Creek · Sierra / West · USGS gage 11173510
Coldwater (summer mean 15.6°C — prime coldwater).
Water
55°F
Flow
8 cfs
Air
64°F
Sky
100%
Pressure
30.12 in
Wind
4 mph
Predicted hatches · 2026-11-02
PredictedMidgeChironomidae0.25
water 13.0°C (55°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
PredictedBlue-Winged OliveBaetis spp.0.19
water 13.0°C (55°F) is cooling past the prime band (6-11°C); shoulder of the season; 8 days sustained ≥4°C; overcast skies favor it; 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.