Peakflow Forecasts Header

SNAKE--NEAR SHELLEY
   State:  Idaho    County:  BINGHAM
   Latitude:  43 24' 47" North    Longitude:  112 8' 6" West
   Elevation:  4599 feet
   Supporting WFO:  Pocatello    
   Action Stage:  12'   Flood Stage:  12.5'   Moderate Flood Stage:  13'
   Major Flood Stage:  13.5'

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 SHELLEY   (SHYI1)
Forecasts for Water Year 2026
Ensemble Date: 2026-06-14
 Forecast Period: June 14 to October 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 6.72 5635 2026-07-09
90 % 6.72 5641 2026-07-10
70 % 6.72 5647 2026-07-11
50 % 6.73 5651 2026-07-13
30 % 6.73 5668 2026-07-15
10 % 6.79 5840 2026-07-16
05 % 6.84 6009 2026-07-19

Peakflow exceedence plot for SHYI1

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