OWYHEE − OWYHEE DAM (OWYO3)
   State:  Oregon
   County:  Malheur
   Latitude:  43 38' 57" North
   Longitude:  117 14' 48" West
   Elevation:  2400 ft

   Supporting NWS Forecast Office: WFO Boise
   Click for NWS Official River Forecasts for OWYO3

   Action Flow:  1000 cfs (3.98 ft)
   Flood Flow:  3000 cfs (6.66 ft)
   Moderate Flood Flow:  8000 cfs (10.71 ft)
   Major Flood Flow:  13500 cfs (11.78 ft)
Daily Historical Statistics for August 14, 2025
Mean Stage: 1.83 ft  Mean Flow: 164 cfs
Max Stage: 2.37 ft  Max Flow: 310 cfs (1933)
Min Stage:  0.88 ft   Min Flow: 18 cfs (1948)

Statistics based on water years: 1930-2024
* statistics estimated based on current rating

Record Flow: 22900 cfs
Date of Record: April 15, 1952

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

Hydrograph plot for OWYO3


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Hydrograph plot for OWYO3


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Hydrograph plot for OWYO3


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Hydrograph plot for OWYO3


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Hydrograph plot for OWYO3


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