Peakflow Forecasts Header

PAYETTE--NEAR EMMETT
   State:  Idaho    County:  GEM
   Latitude:  43 55' 50" North    Longitude:  116 26' 30" West
   Elevation:  2400 feet
   Supporting WFO:  Boise    
   Action Stage:  10'   Flood Stage:  10.5'   Moderate Flood Stage:  12'
   Major Flood Stage:  15'

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.

PAYETTE--NEAR EMMETT   (EMMI1)
Forecasts for Water Year 2026
Ensemble Date: 2026-03-12
 Forecast Period: March 12 to July 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 5.50 5095 2026-04-09
90 % 6.40 6572 2026-04-13
70 % 7.39 8523 2026-05-12
50 % 7.83 9454 2026-05-20
30 % 8.53 11005 2026-05-27
10 % 10.83 16821 2026-06-05
05 % 13.09 23464 2026-06-06

Peakflow exceedence plot for EMMI1

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