Red Butte Creek At Fort Douglas, Near Slc
Red Butte Creek · Rockies · USGS gage 10172200
Coldwater (summer mean 13.6°C — prime coldwater; very low flow (1.1 cfs) — small/seasonal).
Water
53°F
Flow
1 cfs
Air
64°F
Sky
0%
Pressure
29.67 in
Wind
10 mph
Predicted hatches · 2026-06-18
PredictedGreen DrakeDrunella spp.1.00
Predicted by conditions; no reports yet. water 11.5°C (53°F) sits in the prime band (11-15°C); peak season; 7 days sustained ≥10°C; low pressure — fish looking up; watch midday, often cloudy.
flies: Green Drake Parachute #10-12, Cripple, Hares Ear #10
PredictedMidgeChironomidae0.41
Predicted by conditions; no reports yet. water 11.5°C (53°F) is cooling past the prime band (1-10°C); shoulder of the season; 8 days sustained ≥0°C; low pressure — fish looking up; 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.