Peakflow Forecasts Header

CLEARWATER--AT SPALDING
   State:  Idaho    County:  NEZ PERCE
   Latitude:  46 26' 54" North    Longitude:  116 49' 32" West
   Elevation:  770 feet
   Supporting WFO:  Spokane    
   Action Stage:  17'   Flood Stage:  18'   Moderate Flood Stage:  19'
   Major Flood Stage:  19.4'

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.

CLEARWATER--AT SPALDING   (SPDI1)
Forecasts for Water Year 2026
Ensemble Date: 2026-05-14
 Forecast Period: May 14 to September 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 10.74 39253 2026-05-15
90 % 10.74 39253 2026-05-15
70 % 10.74 39253 2026-05-15
50 % 10.74 39253 2026-05-15
30 % 10.74 39253 2026-05-15
10 % 11.60 45748 2026-06-06
05 % 12.14 49994 2026-06-14

Peakflow exceedence plot for SPDI1

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