Truckee River near Sparks
Truckee River · Sierra (CA/NV) · USGS gage 10348200
Lower Truckee through the Reno/Sparks corridor. Warmer urban water; marginal in summer heat.
Water
48°F
Flow
370 cfs
Air
46°F
Sky
100%
Pressure
29.85 in
Wind
5 mph
Predicted hatches · 2026-10-30
PredictedBlue-Winged OliveBaetis spp.1.00
Predicted by conditions; no reports yet. water 8.9°C (48°F) sits in the prime band (6-11°C); peak season; 8 days sustained ≥4°C; overcast skies favor it; watch midday, especially overcast afternoons.
flies: BWO Sparkle Dun #18-22, RS2, Pheasant Tail #18
PredictedMidgeChironomidae0.50
Predicted by conditions; no reports yet. water 8.9°C (48°F) sits in 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.