GRANDE RONDE − TROY (TRYO3)
   State:  Oregon
   County:  Wallowa
   Latitude:  45 56' 45" North
   Longitude:  117 27' 0" West
   Elevation:  1586 ft

   Supporting NWS Forecast Office: WFO Pendleton

   
Click for NWS Official River Forecasts for TRYO3

   Action Stage:  
8 ft
   Flood Stage:  
10 ft
   Moderate Flood Stage:  
11 ft
   Major Flood Stage:  
12 ft
Daily Historical Statistics for October 09, 2025
Mean Stage: 3.21 ft  Mean Flow: 780 cfs
Max Stage: 4.16 ft  Max Flow: 1850 cfs (1960)
Min Stage:  2.86 ft   Min Flow: 500 cfs (1995)

Statistics based on water years: 1945-2025
* statistics estimated based on current rating

Record Stage: 
13.76 ft
Date of Record: 
February 9, 1996

The 4-10 Day Trend Forecast is based on model guidance and uncertainty during this period is greater.

Hydrograph plot for TRYO3


For Data Used In Plot   "label