Peakflow Forecasts Header

GRANDE RONDE--TROY
   State:  Oregon    County:  WALLOWA
   Latitude:  45 56' 45" North    Longitude:  117 27' 0" West
   Elevation:  1586 feet
   Supporting WFO:  Pendleton    
   Action Stage:  8'   Flood Stage:  10'   Moderate Flood Stage:  11'
   Major Flood Stage:  
12'

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.

GRANDE RONDE--TROY   (TRYO3)
Forecasts for Water Year
2022
Ensemble Date: 2021-12-07
Forecast Period: December 7 to April 1
Exceedence
Probability
Stage
feet
Discharge
CFS
Probable
Date of Peak
95 % 5.76 4658 2022-01-18
90 % 5.98 5157 2022-02-06
70 % 6.95 7704 2022-03-04
50 % 7.72 10166 2022-03-23
30 % 8.19 11923 2022-03-26
10 % 9.39 17100 2022-03-31
05 % 9.50 17647 2022-04-01

Peakflow exceedence plot for TRYO3

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