Peakflow Forecasts Header

FALL RIVER--NEAR CHESTER
   State:  Idaho    County:  FREMONT
   Latitude:  44 1' 0" North    Longitude:  111 34' 0" West
   Elevation:  5052 feet
   Supporting WFO:  Pocatello    
   Action Stage:  6'   Flood Stage:  6.5'

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.

FALL RIVER--NEAR CHESTER   (CHEI1)
Forecasts for Water Year
2027
Ensemble Date: 2026-10-09
Forecast Period: October 9 to February 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 2.78 811 2026-10-12
90 % 2.78 811 2026-10-12
70 % 2.78 811 2026-10-12
50 % 2.78 811 2026-10-12
30 % 2.78 811 2026-10-12
10 % 2.97 967 2026-11-03
05 % 3.15 1136 2026-11-07

Peakflow exceedence plot for CHEI1

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