Peakflow Forecasts Header

IMNAHA--AT IMNAHA
   State:  Oregon    County:  WALLOWA
   Latitude:  45 33' 43" North    Longitude:  116 49' 59" West
   Elevation:  1968 feet
   Supporting WFO:  Pendleton    
   Action Stage:  5'   Flood Stage:  5.5'   Moderate Flood Stage:  7'
   Major Flood Stage:  
9'

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.

IMNAHA--AT IMNAHA   (IMNO3)
Forecasts for Water Year
2024
Ensemble Date: 2024-04-25
Forecast Period: April 25 to August 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 3.94 1427 2024-05-05
90 % 3.96 1442 2024-05-06
70 % 4.37 1855 2024-05-19
50 % 4.69 2222 2024-05-26
30 % 5.10 2743 2024-06-01
10 % 5.41 3181 2024-06-11
05 % 6.06 4226 2024-06-16

Peakflow exceedence plot for IMNO3

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