Peakflow Forecasts Header

NF PAYETTE--CASCADE DAM
   State:  Idaho    County:  VALLEY
   Latitude:  44 31' 28" North    Longitude:  116 2' 46" West
   Elevation:  4828 feet
   Supporting WFO:  Boise    
   Inflow Data  

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.

NF PAYETTE--CASCADE DAM   (CSDI1)
Forecasts for Water Year
2026
Ensemble Date: 2026-07-10
Forecast Period: July 10 to November 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 681 2026-08-16
90 % 868 2026-08-23
70 % 1225 2026-09-20
50 % 1425 2026-10-12
30 % 1961 2026-10-22
10 % 2386 2026-10-28
05 % 2816 2026-10-30

Peakflow exceedence plot for CSDI1

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