Skip Navigation Link weather.gov  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left Home News Organization
Bookmark and Share Navigation Bar End Cap

  

National Conditions
    Rivers
    Satellite
    Climate
    Observed Precip

Local Conditions
    Warnings
    Weather Forecast
    Radar- Pendleton
    Radar-Boise
    Radar-Spokane

AHPS Documentation
    User Guide
    User Brochure

What is AHPS?
    Facts
    Our Partners

Feedback/Questions
    Provide Feedback
    Ask Questions

When flooded turn around don't drown
FloodSmart
USA.gov Official Web Portal
 
Hydrograph River at a Glance Download
Grande Ronde River at Troy Stage (ft)Flow (cfs)Observed: 5.73 ft at 7:00PM Apr 15, 2021Observed: 5.7 ft at 7:15PM Apr 15, 2021Observed: 5.69 ft at 7:30PM Apr 15, 2021Observed: 5.72 ft at 7:45PM Apr 15, 2021Observed: 5.71 ft at 8:00PM Apr 15, 2021Observed: 5.69 ft at 8:15PM Apr 15, 2021Observed: 5.67 ft at 8:30PM Apr 15, 2021Observed: 5.74 ft at 8:45PM Apr 15, 2021Observed: 5.74 ft at 9:00PM Apr 15, 2021Observed: 5.72 ft at 9:15PM Apr 15, 2021Observed: 5.71 ft at 9:30PM Apr 15, 2021Observed: 5.74 ft at 9:45PM Apr 15, 2021Observed: 5.76 ft at 10:00PM Apr 15, 2021Observed: 5.77 ft at 10:15PM Apr 15, 2021Observed: 5.73 ft at 10:30PM Apr 15, 2021Observed: 5.74 ft at 10:45PM Apr 15, 2021Observed: 5.8 ft at 11:00PM Apr 15, 2021Observed: 5.82 ft at 11:15PM Apr 15, 2021Observed: 5.84 ft at 11:30PM Apr 15, 2021Observed: 5.79 ft at 11:45PM Apr 15, 2021Observed: 5.78 ft at 12:00AM Apr 16, 2021Observed: 5.75 ft at 12:15AM Apr 16, 2021Observed: 5.8 ft at 12:30AM Apr 16, 2021Observed: 5.83 ft at 12:45AM Apr 16, 2021Observed: 5.85 ft at 1:00AM Apr 16, 2021Observed: 5.87 ft at 1:15AM Apr 16, 2021Observed: 5.81 ft at 1:30AM Apr 16, 2021Observed: 5.9 ft at 1:45AM Apr 16, 2021Observed: 5.8 ft at 2:00AM Apr 16, 2021Observed: 5.88 ft at 2:15AM Apr 16, 2021Observed: 5.9 ft at 2:30AM Apr 16, 2021Observed: 5.87 ft at 2:45AM Apr 16, 2021Observed: 5.82 ft at 3:00AM Apr 16, 2021Observed: 5.86 ft at 3:15AM Apr 16, 2021Observed: 5.8 ft at 3:30AM Apr 16, 2021Observed: 5.87 ft at 3:45AM Apr 16, 2021Observed: 5.86 ft at 4:00AM Apr 16, 2021Observed: 5.83 ft at 4:15AM Apr 16, 2021Observed: 5.84 ft at 4:30AM Apr 16, 2021Observed: 5.83 ft at 4:45AM Apr 16, 2021Observed: 5.82 ft at 5:00AM Apr 16, 2021Observed: 5.77 ft at 5:15AM Apr 16, 2021Observed: 5.78 ft at 5:30AM Apr 16, 2021Observed: 5.78 ft at 5:45AM Apr 16, 2021Observed: 5.82 ft at 6:00AM Apr 16, 2021Observed: 5.76 ft at 6:15AM Apr 16, 2021Observed: 5.81 ft at 6:30AM Apr 16, 2021Observed: 5.8 ft at 6:45AM Apr 16, 2021Observed: 5.76 ft at 7:00AM Apr 16, 2021Observed: 5.83 ft at 10:15AM Apr 16, 2021Observed: 5.73 ft at 10:30AM Apr 16, 2021Observed: 5.81 ft at 10:45AM Apr 16, 2021Observed: 5.82 ft at 11:00AM Apr 16, 2021Observed: 5.94 ft at 11:15AM Apr 16, 2021Observed: 5.84 ft at 11:30AM Apr 16, 2021Observed: 5.79 ft at 11:45AM Apr 16, 2021Observed: 5.77 ft at 12:00PM Apr 16, 2021Observed: 5.84 ft at 12:15PM Apr 16, 2021Observed: 5.85 ft at 12:30PM Apr 16, 2021Observed: 5.84 ft at 12:45PM Apr 16, 2021Observed: 5.78 ft at 1:00PM Apr 16, 2021Observed: 5.81 ft at 1:15PM Apr 16, 2021Observed: 5.81 ft at 1:30PM Apr 16, 2021Observed: 5.88 ft at 1:45PM Apr 16, 2021Observed: 5.84 ft at 2:00PM Apr 16, 2021Observed: 5.81 ft at 2:15PM Apr 16, 2021Observed: 5.81 ft at 2:30PM Apr 16, 2021Observed: 5.74 ft at 2:45PM Apr 16, 2021Observed: 5.75 ft at 3:00PM Apr 16, 2021Observed: 5.81 ft at 3:15PM Apr 16, 2021Observed: 5.81 ft at 3:30PM Apr 16, 2021Observed: 5.81 ft at 3:45PM Apr 16, 2021Observed: 5.77 ft at 4:00PM Apr 16, 2021Observed: 5.77 ft at 4:15PM Apr 16, 2021Observed: 5.77 ft at 4:30PM Apr 16, 2021Observed: 5.83 ft at 4:45PM Apr 16, 2021Observed: 5.77 ft at 5:00PM Apr 16, 2021Observed: 5.79 ft at 5:15PM Apr 16, 2021Observed: 5.79 ft at 5:30PM Apr 16, 2021Observed: 5.76 ft at 5:45PM Apr 16, 2021Observed: 5.73 ft at 6:00PM Apr 16, 2021Observed: 5.73 ft at 6:15PM Apr 16, 2021Observed: 5.81 ft at 6:30PM Apr 16, 2021Observed: 5.81 ft at 6:45PM Apr 16, 2021Observed: 5.87 ft at 7:00PM Apr 16, 2021Observed: 5.75 ft at 7:15PM Apr 16, 2021Observed: 5.82 ft at 7:30PM Apr 16, 2021Observed: 5.8 ft at 7:45PM Apr 16, 2021Observed: 5.8 ft at 8:00PM Apr 16, 2021Observed: 5.79 ft at 8:15PM Apr 16, 2021Observed: 5.84 ft at 8:30PM Apr 16, 2021Observed: 5.8 ft at 8:45PM Apr 16, 2021Observed: 5.84 ft at 9:00PM Apr 16, 2021Observed: 5.79 ft at 9:15PM Apr 16, 2021Observed: 5.82 ft at 9:30PM Apr 16, 2021Observed: 5.79 ft at 9:45PM Apr 16, 2021Observed: 5.82 ft at 10:00PM Apr 16, 2021Observed: 5.88 ft at 10:15PM Apr 16, 2021Observed: 5.84 ft at 10:30PM Apr 16, 2021Observed: 5.87 ft at 10:45PM Apr 16, 2021Observed: 5.87 ft at 11:00PM Apr 16, 2021Observed: 5.91 ft at 11:15PM Apr 16, 2021Observed: 5.89 ft at 11:30PM Apr 16, 2021Observed: 5.87 ft at 11:45PM Apr 16, 2021Observed: 6.02 ft at 12:00AM Apr 17, 2021Observed: 5.94 ft at 12:15AM Apr 17, 2021Observed: 5.9 ft at 12:30AM Apr 17, 2021Observed: 5.9 ft at 12:45AM Apr 17, 2021Observed: 5.88 ft at 1:00AM Apr 17, 2021Observed: 5.98 ft at 1:15AM Apr 17, 2021Observed: 5.94 ft at 1:30AM Apr 17, 2021Observed: 5.91 ft at 1:45AM Apr 17, 2021Observed: 6.03 ft at 2:00AM Apr 17, 2021Observed: 5.92 ft at 2:15AM Apr 17, 2021Observed: 5.95 ft at 2:30AM Apr 17, 2021Observed: 5.87 ft at 2:45AM Apr 17, 2021Observed: 5.97 ft at 3:00AM Apr 17, 2021Observed: 5.93 ft at 3:15AM Apr 17, 2021Observed: 5.95 ft at 3:30AM Apr 17, 2021Observed: 5.88 ft at 3:45AM Apr 17, 2021Observed: 5.89 ft at 4:00AM Apr 17, 2021Observed: 5.88 ft at 4:15AM Apr 17, 2021Observed: 5.91 ft at 4:30AM Apr 17, 2021Observed: 5.96 ft at 4:45AM Apr 17, 2021Observed: 5.99 ft at 5:00AM Apr 17, 2021Observed: 5.92 ft at 5:15AM Apr 17, 2021Observed: 5.96 ft at 5:30AM Apr 17, 2021Observed: 5.93 ft at 5:45AM Apr 17, 2021Observed: 5.93 ft at 6:00AM Apr 17, 2021Observed: 5.99 ft at 6:15AM Apr 17, 2021Observed: 5.94 ft at 6:30AM Apr 17, 2021Observed: 5.96 ft at 6:45AM Apr 17, 2021Observed: 5.91 ft at 7:00AM Apr 17, 2021Observed: 5.92 ft at 7:15AM Apr 17, 2021Observed: 5.9 ft at 7:30AM Apr 17, 2021Observed: 5.91 ft at 7:45AM Apr 17, 2021Observed: 5.85 ft at 8:00AM Apr 17, 2021Observed: 5.91 ft at 8:15AM Apr 17, 2021Observed: 5.91 ft at 8:30AM Apr 17, 2021Observed: 5.94 ft at 8:45AM Apr 17, 2021Observed: 5.91 ft at 9:00AM Apr 17, 2021Observed: 5.95 ft at 9:15AM Apr 17, 2021Observed: 5.91 ft at 9:30AM Apr 17, 2021Observed: 5.87 ft at 9:45AM Apr 17, 2021Observed: 5.92 ft at 10:00AM Apr 17, 2021Observed: 5.94 ft at 10:15AM Apr 17, 2021Observed: 5.94 ft at 10:30AM Apr 17, 2021Observed: 5.92 ft at 10:45AM Apr 17, 2021Observed: 5.9 ft at 11:00AM Apr 17, 2021Observed: 5.95 ft at 11:15AM Apr 17, 2021Observed: 5.92 ft at 11:30AM Apr 17, 2021Observed: 5.92 ft at 11:45AM Apr 17, 2021Observed: 5.96 ft at 12:00PM Apr 17, 2021Observed: 5.97 ft at 12:15PM Apr 17, 2021Observed: 5.88 ft at 12:30PM Apr 17, 2021Observed: 5.92 ft at 12:45PM Apr 17, 2021Observed: 5.89 ft at 1:00PM Apr 17, 2021Observed: 5.93 ft at 1:15PM Apr 17, 2021Observed: 5.92 ft at 1:30PM Apr 17, 2021Observed: 5.92 ft at 1:45PM Apr 17, 2021Observed: 5.87 ft at 2:00PM Apr 17, 2021Observed: 5.89 ft at 2:15PM Apr 17, 2021Observed: 5.87 ft at 2:30PM Apr 17, 2021Observed: 5.88 ft at 2:45PM Apr 17, 2021Observed: 5.92 ft at 3:00PM Apr 17, 2021Observed: 5.93 ft at 3:15PM Apr 17, 2021Observed: 5.88 ft at 3:30PM Apr 17, 2021Observed: 5.9 ft at 3:45PM Apr 17, 2021Observed: 5.9 ft at 4:00PM Apr 17, 2021Observed: 5.9 ft at 4:15PM Apr 17, 2021Observed: 5.91 ft at 4:30PM Apr 17, 2021Observed: 5.96 ft at 4:45PM Apr 17, 2021Observed: 5.94 ft at 5:00PM Apr 17, 2021Observed: 5.91 ft at 5:15PM Apr 17, 2021Observed: 5.87 ft at 5:30PM Apr 17, 2021Observed: 5.93 ft at 5:45PM Apr 17, 2021Observed: 5.95 ft at 6:00PM Apr 17, 2021Observed: 5.87 ft at 6:15PM Apr 17, 2021Observed: 5.91 ft at 6:30PM Apr 17, 2021Observed: 5.99 ft at 6:45PM Apr 17, 2021Observed: 5.89 ft at 7:00PM Apr 17, 2021Observed: 5.91 ft at 7:15PM Apr 17, 2021Observed: 5.89 ft at 7:30PM Apr 17, 2021Observed: 5.96 ft at 7:45PM Apr 17, 2021Observed: 5.95 ft at 8:00PM Apr 17, 2021Observed: 5.95 ft at 8:15PM Apr 17, 2021Observed: 5.9 ft at 8:30PM Apr 17, 2021Observed: 5.97 ft at 8:45PM Apr 17, 2021Observed: 5.97 ft at 9:00PM Apr 17, 2021Observed: 5.91 ft at 9:15PM Apr 17, 2021Observed: 5.98 ft at 9:30PM Apr 17, 2021Observed: 5.99 ft at 9:45PM Apr 17, 2021Observed: 5.94 ft at 10:00PM Apr 17, 2021Observed: 5.98 ft at 10:15PM Apr 17, 2021Observed: 6 ft at 10:30PM Apr 17, 2021Observed: 5.99 ft at 10:45PM Apr 17, 2021Observed: 6.04 ft at 11:00PM Apr 17, 2021Observed: 6.01 ft at 11:15PM Apr 17, 2021Observed: 5.97 ft at 11:30PM Apr 17, 2021Observed: 5.99 ft at 11:45PM Apr 17, 2021Observed: 6.03 ft at 12:00AM Apr 18, 2021Observed: 6.06 ft at 12:15AM Apr 18, 2021Observed: 6 ft at 12:30AM Apr 18, 2021Observed: 6.04 ft at 12:45AM Apr 18, 2021Observed: 6.06 ft at 1:00AM Apr 18, 2021Observed: 6.07 ft at 1:15AM Apr 18, 2021Observed: 6.07 ft at 1:30AM Apr 18, 2021Observed: 6.12 ft at 1:45AM Apr 18, 2021Observed: 6.08 ft at 2:00AM Apr 18, 2021Observed: 6.03 ft at 2:15AM Apr 18, 2021Observed: 6.03 ft at 2:30AM Apr 18, 2021Observed: 6.17 ft at 2:45AM Apr 18, 2021Observed: 6.14 ft at 3:00AM Apr 18, 2021Observed: 6.09 ft at 3:15AM Apr 18, 2021Observed: 6.11 ft at 3:30AM Apr 18, 2021Observed: 6.12 ft at 3:45AM Apr 18, 2021Observed: 6.09 ft at 4:00AM Apr 18, 2021Observed: 6.08 ft at 4:15AM Apr 18, 2021Observed: 6.1 ft at 4:30AM Apr 18, 2021Observed: 6.12 ft at 4:45AM Apr 18, 2021Observed: 6.11 ft at 5:00AM Apr 18, 2021Observed: 6.14 ft at 5:15AM Apr 18, 2021Observed: 6.09 ft at 5:30AM Apr 18, 2021Observed: 6.09 ft at 5:45AM Apr 18, 2021Observed: 6.01 ft at 6:00AM Apr 18, 2021Observed: 6.11 ft at 6:15AM Apr 18, 2021Observed: 6.1 ft at 6:30AM Apr 18, 2021Observed: 6.19 ft at 6:45AM Apr 18, 2021Observed: 6.12 ft at 7:00AM Apr 18, 2021Observed: 6.13 ft at 7:15AM Apr 18, 2021Observed: 6.12 ft at 7:30AM Apr 18, 2021Observed: 6.09 ft at 7:45AM Apr 18, 2021Observed: 6.09 ft at 8:00AM Apr 18, 2021Observed: 6.08 ft at 8:15AM Apr 18, 2021Observed: 6.05 ft at 8:30AM Apr 18, 2021Observed: 6.1 ft at 8:45AM Apr 18, 2021Observed: 6.11 ft at 9:00AM Apr 18, 2021Observed: 6.11 ft at 9:15AM Apr 18, 2021Observed: 6.06 ft at 9:30AM Apr 18, 2021Observed: 6.07 ft at 9:45AM Apr 18, 2021Observed: 6.13 ft at 10:00AM Apr 18, 2021Observed: 6.09 ft at 10:15AM Apr 18, 2021Observed: 6.1 ft at 10:30AM Apr 18, 2021Observed: 6.06 ft at 10:45AM Apr 18, 2021Observed: 6.12 ft at 11:00AM Apr 18, 2021Observed: 6.14 ft at 11:15AM Apr 18, 2021Observed: 6.09 ft at 11:30AM Apr 18, 2021Observed: 6.09 ft at 11:45AM Apr 18, 2021Observed: 6.12 ft at 12:00PM Apr 18, 2021Observed: 6.11 ft at 12:15PM Apr 18, 2021Observed: 6.07 ft at 12:30PM Apr 18, 2021Observed: 6.09 ft at 12:45PM Apr 18, 2021Observed: 6.1 ft at 1:00PM Apr 18, 2021Observed: 6.06 ft at 1:15PM Apr 18, 2021Observed: 6.07 ft at 1:30PM Apr 18, 2021Observed: 6.08 ft at 1:45PM Apr 18, 2021Observed: 6.1 ft at 2:00PM Apr 18, 2021Observed: 6.14 ft at 2:15PM Apr 18, 2021Observed: 6.18 ft at 2:30PM Apr 18, 2021Observed: 6.09 ft at 2:45PM Apr 18, 2021Observed: 6.07 ft at 3:00PM Apr 18, 2021Observed: 6.12 ft at 3:15PM Apr 18, 2021Observed: 6.14 ft at 3:30PM Apr 18, 2021Observed: 6.14 ft at 3:45PM Apr 18, 2021Observed: 6.08 ft at 4:00PM Apr 18, 2021Observed: 6.11 ft at 4:15PM Apr 18, 2021Observed: 6.2 ft at 4:30PM Apr 18, 2021Observed: 6.05 ft at 4:45PM Apr 18, 2021Observed: 6.1 ft at 5:00PM Apr 18, 2021Observed: 6.15 ft at 5:15PM Apr 18, 2021Observed: 6.07 ft at 5:30PM Apr 18, 2021Observed: 6.13 ft at 5:45PM Apr 18, 2021Observed: 6.1 ft at 6:00PM Apr 18, 2021Observed: 6.1 ft at 6:15PM Apr 18, 2021Observed: 6.1 ft at 6:30PM Apr 18, 2021Observed: 6.12 ft at 6:45PM Apr 18, 2021Observed: 6.12 ft at 7:00PM Apr 18, 2021Observed: 6.15 ft at 7:15PM Apr 18, 2021Observed: 6.12 ft at 7:30PM Apr 18, 2021Observed: 6.15 ft at 7:45PM Apr 18, 2021Observed: 6.14 ft at 8:00PM Apr 18, 2021Observed: 6.12 ft at 8:15PM Apr 18, 2021Observed: 6.16 ft at 8:30PM Apr 18, 2021Observed: 6.13 ft at 8:45PM Apr 18, 2021Observed: 6.17 ft at 9:00PM Apr 18, 2021Observed: 6.18 ft at 9:15PM Apr 18, 2021Observed: 6.23 ft at 9:30PM Apr 18, 2021Observed: 6.22 ft at 9:45PM Apr 18, 2021Observed: 6.26 ft at 10:00PM Apr 18, 2021Observed: 6.23 ft at 10:15PM Apr 18, 2021Observed: 6.25 ft at 10:30PM Apr 18, 2021Observed: 6.23 ft at 10:45PM Apr 18, 2021Observed: 6.34 ft at 11:00PM Apr 18, 2021Observed: 6.23 ft at 11:15PM Apr 18, 2021Observed: 6.21 ft at 11:30PM Apr 18, 2021Observed: 6.26 ft at 11:45PM Apr 18, 2021Observed: 6.31 ft at 12:00AM Apr 19, 2021Observed: 6.26 ft at 12:15AM Apr 19, 2021Observed: 6.28 ft at 12:30AM Apr 19, 2021Observed: 6.33 ft at 12:45AM Apr 19, 2021Observed: 6.27 ft at 1:00AM Apr 19, 2021Observed: 6.3 ft at 1:15AM Apr 19, 2021Observed: 6.32 ft at 1:30AM Apr 19, 2021Observed: 6.3 ft at 1:45AM Apr 19, 2021Observed: 6.34 ft at 2:00AM Apr 19, 2021Observed: 6.3 ft at 2:15AM Apr 19, 2021Observed: 6.35 ft at 2:30AM Apr 19, 2021Observed: 6.28 ft at 2:45AM Apr 19, 2021Observed: 6.35 ft at 3:00AM Apr 19, 2021Observed: 6.33 ft at 3:15AM Apr 19, 2021Observed: 6.42 ft at 3:30AM Apr 19, 2021Observed: 6.38 ft at 3:45AM Apr 19, 2021Observed: 6.31 ft at 4:00AM Apr 19, 2021Observed: 6.31 ft at 4:15AM Apr 19, 2021Observed: 6.36 ft at 4:30AM Apr 19, 2021Observed: 6.34 ft at 4:45AM Apr 19, 2021Observed: 6.4 ft at 5:00AM Apr 19, 2021Observed: 6.36 ft at 5:15AM Apr 19, 2021Observed: 6.4 ft at 5:30AM Apr 19, 2021Observed: 6.36 ft at 5:45AM Apr 19, 2021Observed: 6.38 ft at 6:00AM Apr 19, 2021Observed: 6.38 ft at 6:15AM Apr 19, 2021Observed: 6.47 ft at 6:30AM Apr 19, 2021Observed: 6.35 ft at 6:45AM Apr 19, 2021Observed: 6.43 ft at 7:00AM Apr 19, 2021Observed: 6.42 ft at 7:15AM Apr 19, 2021Observed: 6.38 ft at 7:30AM Apr 19, 2021Observed: 6.38 ft at 7:45AM Apr 19, 2021Observed: 6.38 ft at 8:00AM Apr 19, 2021Observed: 6.32 ft at 8:15AM Apr 19, 2021Observed: 6.37 ft at 8:30AM Apr 19, 2021Observed: 6.4 ft at 8:45AM Apr 19, 2021Observed: 6.38 ft at 9:00AM Apr 19, 2021Observed: 6.36 ft at 9:15AM Apr 19, 2021Observed: 6.34 ft at 9:30AM Apr 19, 2021Observed: 6.41 ft at 9:45AM Apr 19, 2021Observed: 6.42 ft at 10:00AM Apr 19, 2021Observed: 6.4 ft at 10:15AM Apr 19, 2021Observed: 6.36 ft at 10:30AM Apr 19, 2021Observed: 6.36 ft at 10:45AM Apr 19, 2021Observed: 6.43 ft at 11:00AM Apr 19, 2021Observed: 6.38 ft at 11:15AM Apr 19, 2021Observed: 6.41 ft at 11:30AM Apr 19, 2021Observed: 6.38 ft at 11:45AM Apr 19, 2021Observed: 6.41 ft at 12:00PM Apr 19, 2021Observed: 6.45 ft at 12:15PM Apr 19, 2021Observed: 6.42 ft at 12:30PM Apr 19, 2021Observed: 6.41 ft at 12:45PM Apr 19, 2021Observed: 6.42 ft at 1:00PM Apr 19, 2021Observed: 6.39 ft at 1:15PM Apr 19, 2021Observed: 6.48 ft at 1:30PM Apr 19, 2021Highest Observation: 6.5 ft at 1:45PM Apr 19, 2021Observed: 6.41 ft at 2:00PM Apr 19, 2021Observed: 6.46 ft at 2:15PM Apr 19, 2021Observed: 6.37 ft at 2:30PM Apr 19, 2021Observed: 6.45 ft at 2:45PM Apr 19, 2021Observed: 6.35 ft at 3:00PM Apr 19, 2021Observed: 6.44 ft at 3:15PM Apr 19, 2021Observed: 6.38 ft at 3:30PM Apr 19, 2021Observed: 6.44 ft at 3:45PM Apr 19, 2021Observed: 6.38 ft at 4:00PM Apr 19, 2021Observed: 6.41 ft at 4:15PM Apr 19, 2021Observed: 6.4 ft at 4:30PM Apr 19, 2021Observed: 6.36 ft at 4:45PM Apr 19, 2021Observed: 6.42 ft at 5:00PM Apr 19, 2021Observed: 6.43 ft at 5:15PM Apr 19, 2021Observed: 6.45 ft at 5:30PM Apr 19, 2021Observed: 6.37 ft at 5:45PM Apr 19, 2021Observed: 6.39 ft at 6:00PM Apr 19, 2021Forecast: 6.45 ft 11:00PM Apr 19, 2021Forecast: 6.37 ft 5:00AM Apr 20, 2021Forecast: 6.27 ft 11:00AM Apr 20, 2021Forecast: 6.16 ft 5:00PM Apr 20, 2021Forecast: 6.06 ft 11:00PM Apr 20, 2021Forecast: 5.99 ft 5:00AM Apr 21, 2021Forecast: 5.94 ft 11:00AM Apr 21, 2021Forecast: 5.9 ft 5:00PM Apr 21, 2021Forecast: 5.87 ft 11:00PM Apr 21, 2021Forecast: 5.87 ft 5:00AM Apr 22, 2021Forecast: 5.89 ft 11:00AM Apr 22, 2021Forecast: 5.91 ft 5:00PM Apr 22, 2021Forecast: 5.93 ft 11:00PM Apr 22, 2021Forecast: 5.96 ft 5:00AM Apr 23, 2021Forecast: 6.01 ft 11:00AM Apr 23, 2021Forecast: 6.04 ft 5:00PM Apr 23, 2021Forecast: 6.05 ft 11:00PM Apr 23, 2021Forecast: 6.05 ft 5:00AM Apr 24, 2021Forecast: 6.07 ft 11:00AM Apr 24, 2021Forecast: 6.15 ft 5:00PM Apr 24, 2021Forecast: 6.31 ft 11:00PM Apr 24, 2021Forecast: 6.54 ft 5:00AM Apr 25, 2021Forecast: 6.72 ft 11:00AM Apr 25, 2021Forecast: 6.82 ft 5:00PM Apr 25, 2021Forecast: 6.88 ft 11:00PM Apr 25, 2021Highest Forecast: 6.92 ft 5:00AM Apr 26, 2021Highest Forecast: 6.92 ft 11:00AM Apr 26, 2021Forecast: 6.87 ft 5:00PM Apr 26, 2021USGS--Water Resources of the United StatesTRYO3(plotting HGIRG) Graph Created (6:47PM Apr 19, 2021)ObservedForecast (issued 3:29PM Apr 19)Latest observed value: 6.39 ft at 6:00 PM PDT 19-Apr-2021. Flood Stage is 10 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (PDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts for the Grande Ronde River at Troy are issued routinely year-round.
Return to Area Map
Upstream Gauge - near Perry Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 12
Moderate Flood Stage: 11
Flood Stage: 10
Action Stage: 8
Low Stage (in feet): 0

Historic Crests
(1) 13.76 ft on 02/09/1996
(2) 12.65 ft on 01/01/1997
(3) 11.85 ft on 03/10/2014
(4) 11.73 ft on 02/07/2020
(5) 11.70 ft on 03/19/0017
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 11.73 ft on 02/07/2020
(2) 11.85 ft on 03/10/2014
(3) 10.30 ft on 01/17/2011
(4) 10.83 ft on 06/05/2010
(5) 10.44 ft on 04/14/2002
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -0.99 ft on 11/25/1993
Zoom Level:16
KML Image
Gauge LocationGauge Map Marker
 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
16 Flooding along the left bank into the town of Troy.
11 Extensive flooding of fields around Troy are possible, but no residences are threatened.
10 Minor flooding of fields adjacent to the river from Elgin through Troy and downstream to the confluence of the Snake River.
9 Minor flooding in lowland fields from Elgin downstream through Troy and through southeast Washington to the Snake River.
About This Location Collapse

Latitude: 45.945702° N, Longitude: 117.451009° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 10 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 1585.98 ft 1595.98 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

Current/Historical Observations:
Resources Collapse
Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Pendleton Weather Forecast Office
2001 NW 56th Drive
Pendleton, OR 97801
(541) 276-7832
Ask Questions/Webmaster
Page last modified: 2-Nov-2020 7:27 PM 		Disclaimer
Credits
Glossary 		Privacy Policy
About Us
Career Opportunities