Sugar River Near Verona
Sugar River · Driftless / Midwest · USGS gage 05435950
Trout (marginal) (summer mean 19.0°C — trout, warm in summer).
Water
50°F
Flow
43 cfs
Air
49°F
Sky
100%
Pressure
30.32 in
Wind
5 mph
Predicted hatches · 2026-10-31
PredictedBlue-Winged OliveBaetis spp.1.00
Predicted by conditions; no reports yet. water 10.2°C (50°F) sits in the prime band (6-11°C); peak season; 8 days sustained ≥4°C; overcast skies favor it; bright high pressure — tougher; watch midday, especially overcast afternoons.
flies: BWO Sparkle Dun #18-22, RS2, Pheasant Tail #18
PredictedMidgeChironomidae0.43
Predicted by conditions; no reports yet. water 10.2°C (50°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.