Peakflow Forecasts Header

LITTLE SALMON--AT RIGGINS
   State:  Idaho    County:  IDAHO
   Latitude:  45 24' 47" North    Longitude:  116 19' 28" West
   Elevation:  1760 feet
   Supporting WFO:  Missoula    
   Action Stage:  9'   Flood Stage:  10'

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.

LITTLE SALMON--AT RIGGINS   (RIGI1)
Forecasts for Water Year
2025
Ensemble Date: 2025-05-12
Forecast Period: May 12 to September 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 7.16 3614 2025-05-12
90 % 7.16 3614 2025-05-12
70 % 7.16 3614 2025-05-12
50 % 7.30 3790 2025-05-28
30 % 7.66 4242 2025-06-03
10 % 8.09 4818 2025-06-07
05 % 8.66 5644 2025-06-12

Peakflow exceedence plot for RIGI1

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