Johnson Creek At 7 Mile Rd At Northville
Johnson Creek · Driftless / Midwest · USGS gage 04166700
Trout (marginal) (summer mean 19.5°C — trout, warm in summer).
Water
45°F
Flow
6 cfs
Air
56°F
Sky
100%
Pressure
30.14 in
Wind
6 mph
Predicted hatches · 2026-09-15
PredictedBlue-Winged OliveBaetis spp.0.55
Predicted by conditions; no reports yet. water 7.2°C (45°F) sits in the prime band (6-11°C); shoulder of the season; overcast skies favor it; watch midday, especially overcast afternoons.
flies: BWO Sparkle Dun #18-22, RS2, Pheasant Tail #18
PredictedMidgeChironomidae0.48
Predicted by conditions; no reports yet. water 7.2°C (45°F) sits in the prime band (1-10°C); shoulder of the season; 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.