Peakflow Forecasts Header

PORTNEUF--AT POCATELLO
   State:  Idaho    County:  BANNOCK
   Latitude:  42 52' 18" North    Longitude:  112 28' 5" West
   Elevation:  4420 feet
   Supporting WFO:  Pocatello    
   Action Stage:  8'   Flood Stage:  8.5'   Moderate Flood Stage:  10'
   Major Flood Stage:  
11'

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.

PORTNEUF--AT POCATELLO   (PIHI1)
Forecasts for Water Year
2025
Ensemble Date: 2025-07-08
Forecast Period: July 8 to November 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 4.32 181 2025-09-19
90 % 4.43 192 2025-09-23
70 % 4.67 218 2025-10-08
50 % 4.93 248 2025-10-20
30 % 5.17 276 2025-10-29
10 % 5.65 337 2025-11-01
05 % 5.94 377 2025-11-01

Peakflow exceedence plot for PIHI1

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