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Hatch predictions for 300+ US rivers — built from live water & weather, then confirmed against real fly-shop reports.

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East Branch Salmon Trout River Near Dodge City

East Branch Salmon Trout River · Driftless / Midwest · USGS gage 04043244

Coldwater (summer mean 14.3°C — prime coldwater).

Water
53°F
Flow
15 cfs
Air
49°F
Sky
0%
Pressure
29.87 in
Wind
2 mph
Predicted hatches · 2026-06-20
PredictedGreen DrakeDrunella spp.1.00
Predicted by conditions; no reports yet. water 11.9°C (53°F) sits in the prime band (11-15°C); peak season; 8 days sustained ≥10°C; watch midday, often cloudy.
flies: Green Drake Parachute #10-12, Cripple, Hares Ear #10
PredictedMidgeChironomidae0.34
water 11.9°C (53°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.