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: 2026-06-06
Forecast Period: June 6 to October 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 5.56 51 2026-06-15
90 % 5.56 51 2026-06-15
70 % 5.57 52 2026-06-20
50 % 5.57 52 2026-06-21
30 % 5.58 54 2026-06-21
10 % 5.63 61 2026-06-26
05 % 5.64 62 2026-07-02

Peakflow exceedence plot for PRII1

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