Peakflow Forecasts Header

POTLATCH--BELOW LITTLE POTLATCH CR NR SPALDING
   State:  Idaho    County:  NEZ PERCE
   Latitude:  46 29' 55" North    Longitude:  116 45' 42" West
   Elevation:  0 feet
   Supporting WFO:  Spokane    

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.

POTLATCH--BELOW LITTLE POTLATCH CR NR SPALDING   (PRII1)
Forecasts for Water Year
2026
Ensemble Date: 2026-02-06
Forecast Period: February 6 to June 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 9.29 1966 2026-02-10
90 % 9.29 1966 2026-02-10
70 % 9.51 2172 2026-02-21
50 % 10.19 2871 2026-03-04
30 % 10.76 3553 2026-03-22
10 % 11.83 5047 2026-04-21
05 % 13.39 7843 2026-05-05

Peakflow exceedence plot for PRII1

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