Smith River At Martinsville
Smith River · Appalachia · USGS gage 02073000
Trout (marginal) (summer mean 17.3°C — trout, warm in summer).
Water
54°F
Flow
73 cfs
Air
46°F
Sky
57%
Pressure
30.48 in
Wind
4 mph
Predicted hatches · 2026-11-01
PredictedBlue-Winged OliveBaetis spp.0.30
water 12.0°C (54°F) is cooling past the prime band (6-11°C); shoulder of the season; 8 days sustained ≥4°C; bright high pressure — tougher; watch midday, especially overcast afternoons.
flies: BWO Sparkle Dun #18-22, RS2, Pheasant Tail #18
PredictedMidgeChironomidae0.30
water 12.0°C (54°F) is cooling past the prime band (1-10°C); shoulder of the season; 8 days sustained ≥0°C; bright high pressure — tougher; 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.