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 2025
Ensemble Date: 2025-07-11
 Forecast Period: July 11 to November 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 2.48 373 2025-07-11
90 % 2.48 373 2025-07-11
70 % 2.48 373 2025-07-11
50 % 2.48 373 2025-07-11
30 % 2.48 373 2025-07-11
10 % 2.60 428 2025-09-13
05 % 2.98 638 2025-10-24

Peakflow exceedence plot for IMNO3

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