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
2025
Ensemble Date: 2025-07-05
Forecast Period: July 5 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 5.06 25 2025-10-19
90 % 5.07 26 2025-10-23
70 % 5.10 28 2025-10-29
50 % 5.15 32 2025-10-31
30 % 5.18 34 2025-11-01
10 % 5.25 40 2025-11-01
05 % 6.55 305 2025-11-01

Peakflow exceedence plot for PRII1

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