Yankee Fork Salmon River near Clayton
Yankee Fork Salmon River · Rockies · USGS gage 13296000
Coldwater (summer mean 13.1°C — prime coldwater).
Water
49°F
Flow
66 cfs
Air
56°F
Sky
27%
Pressure
30.04 in
Wind
9 mph
Predicted hatches · 2026-09-14
PredictedBlue-Winged OliveBaetis spp.0.50
Predicted by conditions; no reports yet. water 9.4°C (49°F) sits in the prime band (6-11°C); shoulder of the season; 8 days sustained ≥4°C; watch midday, especially overcast afternoons.
flies: BWO Sparkle Dun #18-22, RS2, Pheasant Tail #18
PredictedMidgeChironomidae0.50
Predicted by conditions; no reports yet. water 9.4°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.