Peakflow Forecasts Header

NF JOHN DAY--AT MONUMENT
   State:  Oregon    County:  GRANT
   Latitude:  44 48' 54" North    Longitude:  119 25' 50" West
   Elevation:  1960 feet
   Supporting WFO:  Pendleton    
   Action Stage:  12'   Flood Stage:  14'

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.

NF JOHN DAY--AT MONUMENT   (MONO3)
Forecasts for Water Year
2025
Ensemble Date: 2025-05-12
Forecast Period: May 12 to September 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 7.41 4952 2025-05-14
90 % 7.41 4952 2025-05-14
70 % 7.41 4952 2025-05-14
50 % 7.41 4952 2025-05-14
30 % 7.41 4952 2025-05-14
10 % 7.44 5016 2025-05-20
05 % 8.24 6501 2025-06-03

Peakflow exceedence plot for MONO3

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