Hat Creek near Hat Creek
Hat Creek · Sierra / West · USGS gage 11355500
Coldwater (summer mean 9.8°C — prime coldwater).
Water
49°F
Flow
126 cfs
Air
73°F
Sky
0%
Pressure
29.87 in
Wind
6 mph
Predicted hatches · 2026-07-31
PredictedMidgeChironomidae0.50
Predicted by conditions; no reports yet. water 9.3°C (49°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
PREDICTED from the first-principles model only. Report-confirmed signal (fly-shop & forum reports) is the next milestone.