Peakflow Forecasts Header

SNAKE--NEAR HEISE
   State:  Idaho    County:  BONNEVILLE
   Latitude:  43 36' 45" North    Longitude:  111 39' 36" West
   Elevation:  5015 feet
   Supporting WFO:  Pocatello    
   Action Stage:  6.25'   Flood Stage:  8'   Moderate Flood Stage:  9.5'
   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.

SNAKE--NEAR HEISE   (HEII1)
Forecasts for Water Year 2025
Ensemble Date: 2025-05-15
 Forecast Period: May 15 to September 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 6.94 15404 2025-06-16
90 % 6.96 15457 2025-06-16
70 % 6.99 15578 2025-06-16
50 % 7.01 15662 2025-06-16
30 % 7.06 15878 2025-06-16
10 % 7.63 18256 2025-06-18
05 % 8.09 20424 2025-06-21

Peakflow exceedence plot for HEII1

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