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
2022
Ensemble Date: 2021-12-08
Forecast Period: December 8 to April 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 2.04 187 2021-12-21
90 % 2.46 333 2021-12-24
70 % 2.88 533 2022-03-08
50 % 3.40 861 2022-03-22
30 % 3.73 1117 2022-03-26
10 % 4.60 1944 2022-03-31
05 % 4.70 2057 2022-04-01

Peakflow exceedence plot for IMNO3

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