Peakflow Forecasts Header

JOHN DAY--NEAR JOHN DAY
   State:  Oregon    County:  GRANT
   Latitude:  44 25' 7" North    Longitude:  118 54' 21" West
   Elevation:  3131 feet
   Supporting WFO:  Pendleton    
   Action Stage:  7.5'   Flood Stage:  8'   Moderate Flood Stage:  9'
   Major Flood Stage:  
10.5'

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.

JOHN DAY--NEAR JOHN DAY   (JHNO3)
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 % 4.02 189 2021-12-27
90 % 4.09 215 2022-01-07
70 % 4.37 324 2022-02-16
50 % 4.58 420 2022-03-08
30 % 5.01 655 2022-03-20
10 % 5.49 867 2022-03-30
05 % 5.61 920 2022-04-01

Peakflow exceedence plot for JHNO3

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