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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 2026
Ensemble Date: 2026-01-16
 Forecast Period: January 16 to May 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 2.44 1284 2026-03-07
90 % 2.49 1346 2026-04-08
70 % 2.80 1703 2026-04-25
50 % 3.31 2394 2026-04-28
30 % 3.85 3242 2026-05-01
10 % 4.42 4242 2026-05-01
05 % 4.89 5165 2026-05-01

Peakflow exceedence plot for SMNI1

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