Peakflow Forecasts Header

SALMON--AT SALMON
   State:  Idaho    County:  LEMHI
   Latitude:  45 11' 0" North    Longitude:  113 53' 39" West
   Elevation:  3911 feet
   Supporting WFO:  Missoula    
   Action Stage:  7'   Flood Stage:  7.5'   Moderate Flood Stage:  8.5'
   Major Flood Stage:  9.5'

Forecasts are calculated from a forecast time series that approximates flow at a 6 hour time step interval. Observed instantaneous peaks can be higher than model forecast peaks.

SALMON--AT SALMON   (SMNI1)
Forecasts for Water Year 2027
Ensemble Date: 2026-10-10
 Forecast Period: October 10 to February 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 2.39 1180 2026-10-20
90 % 2.39 1183 2026-10-20
70 % 2.40 1187 2026-10-20
50 % 2.40 1194 2026-10-24
30 % 2.45 1243 2026-11-08
10 % 2.63 1440 2026-11-18
05 % 2.69 1511 2026-12-01

Peakflow exceedence plot for SMNI1

 Click to download runoff traces used in forecast.  Click for comma delimited data used in plot.csv icon