Fir Creek Near Brightwood
Fir Creek · Pacific NW · USGS gage 14138870
Coldwater (summer mean 12.2°C — prime coldwater).
Water
53°F
Flow
3 cfs
Air
61°F
Sky
0%
Pressure
29.93 in
Wind
9 mph
Predicted hatches · 2026-08-04
PredictedMidgeChironomidae0.35
water 11.8°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.