Peakflow Forecasts Header

PORTNEUF--AT TOPAZ
   State:  Idaho    County:  BANNOCK
   Latitude:  42 37' 30" North    Longitude:  112 5' 16" West
   Elevation:  4918 feet
   Supporting WFO:  Pocatello    
   Action Stage:  3.5'   Flood Stage:  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.

PORTNEUF--AT TOPAZ   (TOPI1)
Forecasts for Water Year
2024
Ensemble Date: 2024-04-24
Forecast Period: April 24 to August 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 4.24 681 2024-05-03
90 % 4.24 681 2024-05-03
70 % 4.24 681 2024-05-03
50 % 4.26 692 2024-05-07
30 % 4.47 798 2024-05-10
10 % 4.73 967 2024-05-17
05 % 4.97 1137 2024-05-21

Peakflow exceedence plot for TOPI1

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