Peakflow Forecasts Header

HENRYS FORK--ISLAND PARK DAM
   State:  Idaho    County:  FREMONT
   Latitude:  44 25' 0" North    Longitude:  111 25' 0" West
   Elevation:  6302 feet
   Supporting WFO:  Pocatello    
   Inflow Data  

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.

HENRYS FORK--ISLAND PARK DAM   (IPDI1)
Forecasts for Water Year
2025
Ensemble Date: 2025-05-12
Forecast Period: May 12 to September 1
Exceedence
Probability
Inflow
CFS
Probable
Date of Peak
95 % 894 2025-05-19
90 % 894 2025-05-19
70 % 948 2025-05-25
50 % 1079 2025-05-27
30 % 1190 2025-06-01
10 % 1468 2025-06-08
05 % 1611 2025-06-09

Peakflow exceedence plot for IPDI1

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