Skagit River At Newhalem
Skagit River · Pacific NW · USGS gage 12178000
Coldwater (summer mean 11.0°C — prime coldwater).
Water
51°F
Flow
3,340 cfs
Air
n/a
Sky
n/a
Pressure
n/a
Wind
n/a
Predicted hatches · 2026-08-03
PredictedMidgeChironomidae0.44
Predicted by conditions; no reports yet. water 10.7°C (51°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.