Big Wood River At Hailey Id Total Flow
Big Wood River · Rockies · USGS gage 13139510
Coldwater (summer mean 15.4°C — prime coldwater).
Water
n/a
Flow
n/a
Air
48°F
Sky
0%
Pressure
29.99 in
Wind
3 mph
Predicted hatches · 2026-09-15
No bugs scoring above the noise floor right now.
PREDICTED from the first-principles model only. Report-confirmed signal (fly-shop & forum reports) is the next milestone.